 OUTLET BASIN FOR A FISH TANK
专利摘要:
patent summary of invention: "outlet basin for a fish tank". the invention relates to an outlet bowl (4) for a fish tank (1) provided with at least one outlet hose (91, 99) extended from the outlet bowl (4) to a surface (17), the outlet bowl (4) including: - a cylinder-shaped housing (41) which is provided, in its upper portion (410), with a mounting collar (43) arranged to be attached to a lower portion (179) of the fish tank (1) and which is provided, in its lower portion (419), with a hollow opening (413); - a cylinder-shaped outlet channel (45) which, in one portion, is housed in the housing (41), the outlet channel (45) being provided, in its upper portion (450), with a filter (453) covering the cross section of the outlet channel (45); - an elongated annular space (46) between the housing (41) and the outlet channel (45); - an inclined grid (47) covering the entire annular space (46), the lower portion (479) of the inclined grid (47) being positioned just below the opening (413) of the housing (41); - an inclined lower plate (49) sealing the entire annular space (46) and - a lower hollow opening (493) in the lower portion (499) of the lower plate (49). 公开号:BR112015018241B1 申请号:R112015018241-0 申请日:2014-02-05 公开日:2020-03-31 发明作者:Anders Naess 申请人:Akvadesign As； IPC主号:
专利说明:
Invention Patent Descriptive Report for OUTPUT BASIN FOR A FISH TANK. [0001] The invention relates to an outlet basin for a fish tank that is used to raise fish. More specifically, the invention relates to an outlet bowl that separates particulate material and guides it to a first outlet hose and that separates dead fish and guides them to a second outlet hose. [0002] Fish farming in the sea conventionally takes place in so-called open fish tanks. An open fish tank includes a net forming an enclosure for the fish, allowing direct flow. The fish tank is kept buoyant with the help of a floating floating system. [0003] Open fish tanks have some disadvantages. For salmon farming, it is a disadvantage that fish are infected with crustacean parasites, such as salmon lice, and with other diseases thanks to viruses, bacteria and parasites. Fish escape, especially when tears are formed in the net by accident. An open fish tank discharges waste products, such as uneaten food and fecal matter, into the container. The water temperature inside the fish tank follows the temperature of the surrounding water. In winter, the water temperature, especially close to the surface, can be too low for the fish to develop perfectly. In summer, the water temperature can be too high for the fish to grow perfectly. [0004] A closed fish tank is an alternative to an open fish tank, and a closed fish tank solves some of the problems associated with an open fish tank. Closed fish breeding tanks are known in the art. They can be formed from a firm cloth material that forms a bag. Patent publication NO160752 / US4711199 reveals an example of such 2/58 fish tank. The fish tank is provided with a substantially flat bottom, the bottom being provided with a conically formed sediment collector. US patent publication 4,798,168 discloses a cylinder-shaped fish tank in a cloth-like material with a cone-shaped bottom. The water is guided on a tangent to the surface of the fish tank, and an outlet has its inlet portion positioned on the water surface in the center of the fish tank. Fecal matter and leftover food are collected at the bottom of the bottom and pumped to the surface through a pipe. A flexible suction pipe from a corrugated plastic pipe, for example, is attached to the entrance to the fish tank. At its free end, the flexible suction pipe is provided with a rope extended to the surface. As the suction pipe is flexible, the free end can be raised or lowered to the desired depth in the water. The length of the suction pipe is constant. [0005] Closed fish tanks formed from a rigid material are also known. Patent publication NO 166511 / EPO347489 discloses a semi-submersible floating platform that includes cylindrical silos equipped with a cone-shaped lower portion. Patent publication NO 165783 / US4909186 discloses a fish-shaped container. Patent publication WO2010 / 016769 discloses a fish tank in a waterproof and substantially rigid material, the fish tank being substantially hemispherical. The patent publication states that the depth of the water inlet can be adjusted to have as perfect a water temperature as possible. Patent document WO2010 / 099590 discloses a fish tank composed of waterproof fiberglass panels with an intermediate foam material to produce flotation. The fish tank is substantially cylinder-shaped with a flat bottom. 3/58 [0006] Patent publication NO 175341 / WO9402005 discloses a closed fish tank with a cylindrical top and a tapered bottom. The fish tank can consist of steel, concrete or a soft cloth reinforced with plastic. The water is pumped into the fish tank in the upper portion of the fish tank through a horizontal supply pipe. At its end portion inside the fish tank, the supply pipe is provided with a swiveling outlet to direct the incoming water in a desired direction horizontally and vertically. In its lower portion, the conical bottom of the fish tank is equipped with a funnel-shaped outlet. In a portion of the wall, the outlet is equipped with a grid that stops the fish, but allows the water that comes out to pass. The outlet is also provided with static guide blades to stop the approximately circular movement of water in the fish tank for an approximately vertical downward movement. [0007] Flotation systems for floating fish breeding tanks may consist of rectangular steel passages that are provided with floating bodies. The passages are articulated. The passages form a grid of longitudinal and transverse passages. Such a flotation system is generally used in conjunction with open fish tanks. The trawler, which forms the enclosure for the fish, is placed in a square and attached to the surrounding passages on hooks that protrude from separate poles or supports. The flotation system can also consist of at least one plastic pipe that is welded together in a ring. In general, the flotation system consists of two concentric rings side by side, as shown in patent publications WO 90/01872 and WO 91/17653, for example. Plastic fish tanks having three concentric plastic rings are known as well. The plastic rings are connected by 4/58 radially oriented clamps in plastic or steel. The passages can be placed on top of two concentric rings. In an open fish tank, the trawler is placed inside the innermost barrel of the flotation system and is secured with projected fish hooks. The hooks of the trawler can be attached to the pipe or to a grid projecting over the flotation system. The circumference for trawling in a plastic fish tank can be between 90 m and 160 m, for example, corresponding to a diameter of approximately between 30 m and 50 m. [0008] The known closed fish tanks solve some of the disadvantages related to an open fish tank. The closed tanks of known fish also have some disadvantages. [0009] To ensure that the water exchange rate is sufficient to maintain a good water environment inside the fish tank, it is usual to pump in a lot of water so that the surface of the water inside the fish tank is higher than that the water surface out of the fish tank. Thereby, the pressure inside the fish tank is greater than the surrounding pressure, and water will escape from the fish tank through the openings formed. This subjects the flotation system of a closed fish tank to greater forces than the flotation system of an open fish tank of the same size. In addition to keeping the current cloth or fish tank net floating, the flotation system float needs to be sized to maintain the amount of water inside the fish tank that is above the water surface of the surrounding water. This water constitutes a considerable mass. In addition, this water has a moment of inertia that makes the influence of the waves in the flotation system greater than in an open fish tank, in which the movement of the waves passes the flotation system and to den 5/58 fish tank substantially free-form. As mentioned, the walls of closed fish tanks can include material in the form of cloth. Thanks to the fact that the amount of water in the fish tank produces a negative fluctuation, the material in the form of cloth needs to have great resistance to tearing. A cloth-like material cannot be attached to the float system in the same way as a trawler. Perforation of the material in the form of a cloth will impair tear resistance. The hole can be reinforced with a metallic eyelet, but it is difficult to match the spacing of a plurality of holes with a plurality of hooks in such a way that the cloth remains soft. The water pressure inside the fish tank will stretch the cloth, while very short distances between the hooks will create folds. A very wide spacing of the hooks in relation to that of the holes formed makes it impossible for one or more of the hooks to be used. This impairs the resistance of the fish tank cloth to the flotation system. [0010] Over time, a fine sediment will form inside the closed fish tank. The sediment consists of fecal matter and small particles of food. The food particles are greasy. This sediment has insufficient deposit properties. In fish tanks with approximately flat bottoms, whether they have substantially cylindrical sidewalls or are ball-shaped, this sediment will remain along the bottom and will only move slowly inward to the center of the fish tank. The fish tank outlet is usually positioned in the center of the bottom. The sediment forms a pool that captures more fecal matter and food scraps and prevents them from being transported to the outlet. The rate of flowing water can be increased to transport the sediment to the outlet, but experience has shown that it can cause the sediment to dissolve and get mixed in the water inside the 6/58 fish tank again, especially if the water flow is a little turbulent and deviates from the desired laminar flow. When an oxygenation system is used, with a supply of gas bubbles near the outlet of the fish tank, the sediment particles will easily be transported completely to the surface of the water inside the fish tank. The sediment dissolved in the water creates cloudy water and provides poor water quality for the fish. The dying fish will sink to the bottom of the fish tank and begin to decompose there if not removed. Mortality may be due to disease caused by pathogenic organisms and it is important to remove dead fish quickly in order to reduce any infection pressure on fish in the fish tank. Patent publication NO332341 / WO2011133045 discloses a closed fish tank with a cone-shaped bottom. In one embodiment, all sewage water is brought up into a sediment tank that is positioned on the floating collar of the fish tank. In an alternative embodiment, the remains of food and fecal matter are partially separated from the water at the bottom of the fish tank. Sewage water is transported to the sediment tank, while the remains of food and fecal matter are transported to the surface in a separate outlet pipe. Patent publication NO175082 / WO9323994 discloses an outlet for containers on land. The containers are arranged to raise fish and are provided with relatively flat bottoms. A primary water flow and a secondary water flow carry the particles in the water inward towards the center of the container. In the center of the container, the sewage water moves out through a crack and into a circular particle trap formed as an annular space around the outlet pipe. Water flows out of a row of holes in the outlet pipe, while the deposited material is moved by the fluid 7/58 x the water through a slit opening and down into a particle outlet. Patent publication NO318527 / US6443100 discloses an outlet for a closed fish tank. An outlet pipe extends through the bottom of the fish tank and projects upward into the fish tank. Water flows out of the fish tank through a slit in the upper portion of the outlet pipe. The deposited material sinks along the outside of the outlet pipe and is transported out of the fish tank through an opening in the fish tank in the direct passage outlet pipe in the fish tank. [0011] The water will have to be pumped into the closed fish tank because the pressure inside the fish tank is greater than that outside. The incoming water creates currents within the fish tank. The chains must be such that the entire volume of water is replaced regularly. Ideally, the flow should be laminar and flow equally from the entrance to the exit. Patent publication NO 160753 discloses an entrance to a floating tank or a land-based tank, in which water is transported into the tank through a pipe through the tank wall. Inside the tank, the water is transported through a vertically oriented nozzle device with fixed nozzles that let the incoming water have a tangential component. The vertical nozzle device can be positioned with a horizontal distance to the container wall. Patent publication WO 2006/000042 also discloses a vertically oriented nozzle device inside a floating tank. The incoming water acquires a tangential component. The water is transported into the tank through a pipe through the wall of the tank. US patent publication 5,762,024 also discloses a vertically oriented nozzle device inside a floating tank. Water is transported into the tank by cy 8/58 ma and the nozzle openings are positioned in the lower portion of the nozzle device. The water acquires a circular flow in the tank. The flow rate of the water is adjusted by changing the pump speed. The nozzle devices described in these three patent publications are fixed, so that the direction of flow of water out of the nozzle device is constant. Patent publication NO 332589 discloses a floating tank with a vertically oriented nozzle device as well. The nozzle device is preferably provided with slots or nozzles adjustable in the direction. NO 332589 does not show how this should be done in practice. NO 332589 also discloses that the nozzle device can consist of an outer barrel and an inner barrel that can be rotated, raised and lowered in relation to each other in a controlled manner. In this way, the amount, direction and level of incoming water can be adjusted. NO 332589 does not show in detail how this should be done. NO 332589 also reveals telescopic water inlet pipes. The lengths of the pipes and, thus, the length of the inlet opening, can be adjusted with a cable extended through the pipe and being attached to the lower portion of the pipe. Patent publication NO 327035 discloses a nozzle device for a land-based tank. The nozzle device includes a fixed, vertically oriented dispensing pipe. The dispensing pipe is provided with several nozzle openings along the longitudinal direction of the dispensing pipe. The nozzle openings extend axially in a slit shape with a length exceeding the width by a factor of at least 2. A damping member provided with holes can be moved axially along the dispensing pipe. The damping member is provided with several slit openings corresponding to the slit openings in the dispensing pipe. [0012] As mentioned in the preceding, the water inside a closed fish tank can have the water surface above the surface. 9/58 water surface around the fish tank. The water inside the fish tank may have been pumped over a water depth in which the water salinity is greater than the water salinity outside the fish tank. The water inside the fish tank, thereby, has a higher density than the surrounding water. It was found that in a loss of electrical power that drives the pumps supplying the fish tank with water, the water will first flow out of the fish tank, until the surface of the water inside the fish tank is level with the surface of water outside the fish tank. If the water inside the fish tank has a higher density than the surrounding water, the water will continue to come out of the fish tank. The water outside the fish tank can flow past the fish tank at relatively high speed. It has been found that once the flow of water out of the fish tank has been established, it can be maintained by the water that is flowing further outside. A closed fish tank that includes walls in a cloth-like material will be extended when the pressure inside the fish tank is greater than the pressure outside the fish tank. When water begins to flow out of such a closed fish tank, the walls of the bag will begin to close. This will happen especially in the bottom portion of the fish tank while the top portion of the fish tank is kept in shape by the flotation system of the fish tank. The fish tank thus acquires a reduced volume and this has a stressful effect on the fish in the fish tank. [0013] Water can be transported out of a closed fish tank via an outlet at the bottom of the fish tank. The outlet opening must be secured with a grid or the like to prevent the fish in the fish tank from escaping from the fish tank through the outlet. Over time, such a grid will be covered with 10/58 sediment. The grid will also be clogged with, for example, shells and tunicates. The inside of the closed fish tank will also be clogged. Such clogging can be removed by washing. This leads to relatively large amounts of material sinking to the outlet and depositing on the grid. The grid can therefore be partially blocked by sediment, clogging and material from the fish tank wall. As the grid partially clogs, the resistance of the water flow out of the outlet will become greater. This is neutralized by the water column on the grid becoming larger. That is to say, the level of the water surface inside the fish tank rises in relation to the water surface of the surrounding water. This in turn increases the load on the flotation system. As illustrative dimensions, it can be indicated that an increase in water level of 1 cm inside a closed fish tank can result in the flotation system being lowered 7 to 8 cm further down in the water. [0014] A substantial amount of water will have to be pumped into a closed fish tank to maintain a good water environment for the fish. The water can advantageously be pumped up to a depth at which the water temperature is more constant than at the surface. This also has the advantage that fish are exposed to lesser amounts of parasites, as these are usually located in the upper layers of the water. A supply channel with a large diameter has the disadvantage of underpressure in the supply channel possibly causing the channel wall to close. This can be overridden by increasing the wall thickness. The pipe will therefore be more rigid. A rigid pipe has the disadvantage of water currents pressing harder against the pipe. In particular, fixing the pipe to the pump housing and fixing the pump housing to the 11/58 fluctuation of the fish tank will therefore be subjected to a greater effort. [0015] The purpose of the invention is to remedy or reduce at least one of the disadvantages of the prior art or at least present a useful alternative to the prior art. [0016] The objective is achieved through the aspects that are specified in the description below and in the claims that follow. [0017] The invention relates to an outlet basin for a fish tank provided with at least one outlet hose extended from the outlet basin to the surface, the outlet basin including: - a cylinder-shaped housing which, in its upper portion, is provided with a mounting collar arranged to be attached to a lower portion of the fish tank and which, in its lower portion, is provided with a hollow opening; - a cylinder-shaped outlet channel housed in the housing, the outlet channel being provided, in its upper portion, with a filter covering the cross section of the outlet channel; - an elongated annular space between the housing and the outlet channel; - an inclined grid covering the entire annular space, the lowest portion of the inclined grid being positioned just below the opening in the housing; - an inclined bottom plate covering the entire annular space with sealing, and - a lower hollow opening in the lower portion of the lower plate. [0018] The outlet channel can be fixed in the housing by means of at least one of the grid and the bottom plate. The grid can include a plurality of ribs oriented side by side. Alternatively, the grid may comprise a screen plate. The bottom can 12/58 comprise a fine mesh material. The opening may lead into a first pipe socket arranged to be connected in a sealing manner to a first outlet hose. The lower hollow opening can be positioned on the lower plate in the lower portion of the lower plate on the housing's inner lining. The lower hollow opening can be positioned in the housing lining in a portion between the lower portion of the grid and the lower portion of the lower plate. [0019] The lower opening can lead to a second pipe socket arranged to be connected in a way of sealing in a second outlet hose. The filter can have a conical shape and the filter point can turn upwards. In an alternative embodiment, the filter may include an upper plate, and between the outer edge of the upper plate and the edge of the outlet channel, a plurality of ribs may extend side by side so that, between the ribs, elongate openings forming filter cracks are formed. The ribs may consist of pipes. [0020] A flotation system for a floating fish tank for fish farming is also described, in which the flotation system can include at least two concentric rings, in which at least two of the at least two concentric rings can have substantially the same diameter and the first of at least two concentric rings can be loosely positioned over the second of at least two concentric rings. At least two of the at least two concentric rings can have substantially the same diameter. [0021] A plurality of elongated plates can be attached to at least one end portion in one of the at least two concentric rings and the plates can extend at least around a portion of the other of the at least two concentric rings. 13/58 The plates can be attached to the bottom of the two concentric rings and can extend at least around a portion of the top of the two concentric rings. A grid can be attached to the top of the two concentric rings. [0022] A suspension device for attaching a bag to a closed fish tank in a flotation system is also described, in which, on a side edge, the suspension device can be provided with: - a groove formed between two opposite edges forming an elongated inlet portion extended from the edge to an elongated cavity in the suspension device, the diameter of the cavity being greater than the distance between the two opposite edges and - a hollow opening that has a longitudinal geometric axis extended substantially perpendicular to the longitudinal direction of the cavity, the hollow opening being positioned above the cavity in the application position, so that the suspension device can be movably attached to a bulb formed in the top edge of the bag. [0023] A bag that can be provided with a bulb in portions of the upper edge for removable positioning in a longitudinal cavity in a suspension device is also described. The bulb can be formed along the entire upper edge of the bag. The bulb can be formed by the cloth of the bag having been folded around an elongated body and fastened to itself by means of a fixing device. [0024] A suspension device is also described, in which the suspension device can include a female part and a male part, in which the female part can include: - an end edge and a coupling side; - an elongated hollow profile positioned on the coupling side 14/58 ment; - an extended edge from the hollow profile to the end edge, and - an elongated groove positioned on the coupling side, side by side with the hollow profile, the groove including an external entrance portion facing outwards to the coupling side and an internal cavity, the cavity diameter being greater than the width of the input portion; and the male part can include: - an end edge and a coupling side; - an elongated hollow profile positioned on the coupling side; - an extended edge from the hollow profile to the end edge, and - an elongated projected guide positioned on the coupling side, side by side with the hollow profile, the guide including a head portion and a neck, the head portion and the neck complementarily adjusting the cavity and the inlet portion, respectively , of the female part and being such that the diameter of the head is smaller than the diameter of the cavity and greater than the width of the inlet portion, so that the cavity of the female part can be moved sideways over the head portion the male part to remotely connect the male part and the female part and so that the hollow profile of the female part and the hollow profile of the male part together form an elongated cavity between them. [0025] The suspension device can also be provided with an opening that has a longitudinal geometric axis that extends substantially perpendicular to the longitudinal direction of the cavity and the opening can be positioned above the cavity in the application position. [0026] The female part can be provided with a hollow opening from an external lateral surface to the coupling side and the female part can be provided with a hollow opening from an external lateral surface to the coupling side, so that when the hollow opening of the female part coincides with the hollow opening of the male part, a hollow opening is formed from the outside of the female part to the outside of the male part. [0027] The male part may be provided with at least one hollow hole extended from one end face of the male part to an opposite end face and an opening may have been formed from the outside of the male part to the hollow hole, so that a pin can be positioned in the hole and a fixing member can be passed around the pin through the opening. A screw or fixing screw that can be oriented perpendicular to the coupling side can be arranged to lock the male part and the female part together, so that the male part cannot move sideways with respect to the part female and vice versa. [0028] A closed fish tank is also described, in which the wall can include a fluid-proof material, the fish tank can be provided, in an upper portion, with a flotation device on the water surface and with an inlet for water, and the fish tank can be provided, in a lower portion, with an outlet; where the depth of the fish tank is the distance from the water surface to the outlet, the wall at the top of the fish tank can be formed in a spherical shape and the wall at the bottom of the fish tank can be formed in a conical shape. [0029] The conical portion of the fish tank may exhibit a depth (D c ) that constitutes substantially half the depth 16/58 (D) of the fish tank. The conical portion of the fish tank may alternatively exhibit a depth (D c ) that constitutes substantially a quarter of the depth (D) of the fish tank. The conical portion of the fish tank may exhibit a depth (D c ) that constitutes substantially between half and a quarter of the depth (D) of the fish tank. The conical portion of the fish tank can find the spherical portion of the fish tank on the tangent. [0030] A protective net for a closed fish tank that includes a wall in a soft material in the form of cloth is also described, in which the protective net can include: - a plurality of substantially horizontal belts side by side; - a plurality of vertical straps, each extended from at least one horizontal strap to a close horizontal strap, and the vertical strap being attached to the horizontal strap; wherein a plurality of vertical straps extend from the upper portion of the protective net to the lower portion of the protective net; - the upper portion of the protection net being provided with a device for securely attaching the protection net to the fish tank flotation system; - the lower portion of the protective net being provided with a device to secure the protective net to the lower portion of the fish tank, and - the protection net can be positioned outside the closed fish tank. [0031] Each horizontal belt can form a ring. In its longitudinal directions, the horizontal and vertical straps of the protection net can be matched with the external geometry of the closed fish tank. The device for securing the protective net to the flotation system can be arranged for vertical tightening or loosening 17/58 vertical protection net in relation to the flotation system. Horizontal and vertical straps can include wide strips. [0032] An inlet system for a closed fish tank is also described, the fish tank being provided with a surrounding flotation system and the fish tank being provided with an outlet in its lower portion; the entry system can comprise: - a pump in a pump housing; - an external supply channel that, in its upper portion, leads to the pump entrance and - an orientation channel which, at its outer end, is in fluid communication with the pump outlet and which, at its opposite inner end, projects into the fish tank, where, inside the fish tank, the inlet system may also include an elongated chain creation pipe that is rotatable around its longitudinal geometric axis and in which the chain creation pipe is in fluid communication with the orientation channel and in which the creation pipe chain can be provided with a plurality of openings arranged in at least one row of holes. [0033] In its upper end portion, the chain-creating pipe can be rotatable in a sleeve that is in fluid communication with the guidance channel, and the chain-creating pipe is provided with an opening in oval shape on your wall for fluid communication with the glove. In its upper end portion, the chain-creating pipe can be provided with an operating device arranged to rotate the chain-creating pipe around its longitudinal geometric axis. In its upper end portion, the chain-creating pipe can be provided with an upper stop ring and a lower stop ring which are positioned above and below the sleeve, respectively. 18/58 [0034] A chain-creating pipe for a container or closed fish tank is also described, the chain-creating pipe being positioned inside the fish container or tank, the chain-creating pipe being equipped with: - an opening in the upper portion of the current-creating pipe for communicating fluid with an orientation channel which is secured in the upper portion; - a plurality of openings in the surface of the chain-creating pipe, arranged in a row of holes extending in the longitudinal direction of the chain-creating pipe; - a movable damping member in relation to the current-creating pipe; and the openings having a length along the circumference of the chain-creating pipe that is the same as or greater than the width of the openings in the longitudinal direction of the chain-creating pipe. [0035] By furniture it is planned that the damping member can be moved along the current creation pipe in the longitudinal direction of the current creation pipe. By furniture it is also planned that the damping member can be rotatable around the longitudinal geometric axis of the current creation pipe. By furniture it is planned that the damping member can be movable along the chain-creating pipe in the longitudinal direction of the chain-creating pipe and rotating around the longitudinal geometric axis of the chain-creating pipe. [0036] The damping member can be rotatable around the longitudinal geometric axis of the chain creation pipe and the damping member includes a first side plate and a second side plate, both extended in the longitudinal direction of the chain creating pipe and there are plates transversal securing the first plate 19/58 side and the second side plate. The distance between the opposite edges of the side plates may be shorter than the width of the opening. The damping member can be positioned inside the current-creating pipe. [0037] The damping member can be movable along the longitudinal direction of the chain-creating barrel and the damping member is provided with a plurality of belly bands that extend around the circumference of the chain-creating barrel, holding the first side plate and the second side plate, wherein a side edge of the belly band or a transverse plate between the first side plate and the second side plate substantially coincides with a side edge of the opening when the damping member is in an open position. The number of belly bands and transverse plates can equal the number of openings. The width of the belly band or the transverse plate in the longitudinal direction of the current-creating pipe may be greater than the width of the opening. The damping member can also be provided with a clamp plate extended in the longitudinal direction of the current-creating pipe, the clamp plate connecting the circumference bands. [0038] The damping member of the chain-creating pipe may include a plate provided with openings corresponding to the openings of the chain-creating pipe in shape and number; - the damping member can be movable along the longitudinal direction of the current-creating pipe; - the damping member can be provided with a row of rudders in the longitudinal direction of the damping member, each rudder being articulated on the plate and each rudder being connected, at its free end, to a rod, and - each rudder can project over the middle portion of the plate opening. 20/58 [0039] The damping member of the chain-creating pipe may include a plate provided with openings corresponding to the chain-opening openings in shape and number; - the damping member can be movable along the longitudinal direction of the current-creating pipe; - the damping member can be provided with two rows of rudders in the longitudinal direction of the damping member, each rudder being articulated on the plate and each rudder being connected at its free end on a rod, and - a first row of rudders can be attached to one side of the plate opening and a second row of rudders can be attached to the opposite side of the plate opening; - the rod of the first row of rudders can be connected to the rod of the second row of rudders by a connecting rod. [0040] A filter regulator for a filter in a closed fish tank is also described, the filter covering the cross section of an outlet channel in an outlet bowl at the bottom of the fish tank, where the filter regulator can include: - a regulator sleeve positioned movably outside the filter and - a control mechanism displacing the regulator sleeve. [0041] The control mechanism may include an actuator that is attached to the regulator sleeve, the actuator extended from the regulator sleeve through the filter, through the outlet channel to a water surface outside the fish tank. The actuator can include a pipe or stem inside a guide pipe. The guide pipe can be attached inside the outlet channel. [0042] The filter regulator can include: - a cable attached to the regulator sleeve, the cable extended from 21/58 regulator sleeve for a first pulley and over that for a control mechanism and - the control mechanism being able to move the regulator sleeve by varying the pull force on the cable. [0043] The control mechanism can include a first winch. The filter regulator can also include a second winch positioned on the side of the fish tank diagonally opposite the first winch, there being a centering cable extended from the second winch to a block housing the first pulley. [0044] The control mechanism can include a float and the float can be positioned inside the fish tank. The cable may have been extended from the first pulley to and over a second pulley, up to and over a third pulley and up to the float; the second pulley is positioned on the side edge of the fish tank and the third pulley is positioned submerged on the side edge of the fish tank. The block can be attached to at least three lines extending over the fish tank and being attached to each other in the middle portion of the fish tank. [0045] An inlet system for a closed fish tank is also described, in which the fish tank can be provided with a surrounding flotation system and in which the fish tank is provided with an outlet in its lower portion; the entry system includes: - a pump in a pump housing; - an external supply channel which, in its upper portion, leads into the pump inlet and which is provided with a filter in its inlet portion, and - an orientation channel that, at its outer end, is in fluid communication with the pump outlet and which, at its opposite inner end, projects into the fish tank, in which the external supply channel, in a portion between The entrance portion and its outer portion may include a portion that includes an adjustable length channel, the adjustable length channel including a channel wall in an elastic polymer material and a spiral in a rigid material housed in the wall from the channel and a rope or cable can extend from the filter to the flotation system. [0046] The supply channel filter may include a filter pipe. The rope or cable can extend substantially between the filter and the flotation system inside the supply channel. [0047] An inlet system for a closed fish tank is also described, in which the fish tank is provided with a surrounding flotation system and in which the fish tank is provided with an outlet in its lower portion; the entry system includes: - a pump in a pump housing; - an external supply channel which, in an upper portion, leads to the pump inlet and which, in an inlet portion, is provided with a filter and - an orientation channel which, at its inlet end, is in fluid communication with the pump outlet and which, at its opposite inner end, projects into the fish tank, the external supply channel being composed of at least least two supply channels. [0048] The number of supply channels can be at least three. Each supply channel can be provided with a filter in an inlet portion. Each supply channel can be connected to a filter chamber at an inlet portion. [0049] The inlet system may also include a damper between the pump outlet and the inlet end of the guidance channel. The damper may include a check valve with two flaps. 23/58 [0050] An inlet system for a closed fish tank is also described, in which the fish tank is provided with a surrounding float system, and the fish tank is provided with an outlet in its lower portion; the entry system includes: - a pump in a pump housing; - an external supply channel which, in an upper portion, leads to the pump inlet and which is provided with a filter in an inlet portion, and - an orientation channel which, at its inlet end, is in fluid communication with the pump outlet and which, at its opposite inner end, projects into the fish tank, the inlet system still including a damper between the pump outlet and the inlet end of the guidance channel. [0051] The damper may include a check valve with two flaps. [0052] In the following, examples of preferred modalities are described, which are visualized in the accompanying drawings, in which: [0053] Figures 1A-B show, in A, a portion of a closed fish tank with a flotation system and, in B, on a slightly different scale, a schematic cut of the two rings in the flotation system, the rings being held together by J-shaped plates; [0054] Figure 2 shows a perspective view, on a larger scale, of a suspension device for attaching a trawler or a cloth to a flotation system; [0055] Figure 3 shows a section, on a larger scale than figure 2, of a bulb in a trawler or a cloth, the bulb being arranged to adjust the suspension device shown in figure 2; 24/58 [0056] Figure 4 shows a section, on the same scale as figure 3, of the suspension device shown in figure 2 and a section of a fixing member; [0057] Figure 5 shows a section, on a slightly smaller scale than Figure 3, through an alternative suspension device; [0058] Figure 6 shows the same as figure 5, but in an additional alternative mode; [0059] Figure 7 shows a side view, on the same scale, of the suspension device shown in figure 5; [0060] Figure 8 shows a side view, on the same scale, of the suspension device shown in figure 6; [0061] Figure 9 shows a side view, on a different scale, of an outlet basin for a fish tank; [0062] Figure 10 shows a perspective view, in an exploded drawing on a different scale, of the outlet basin shown in figure 9; [0063] Figure 11 shows a top view, on a different scale, of the outlet basin shown in figure 9; [0064] Figure 12 shows a partial section, on a different scale, of the outlet basin shown in figure 9; [0065] Figure 13 shows a perspective view, on a different scale, of a closed fish tank with an outlet basin, seen from below; [0066] Figure 14 shows a perspective view, on a different scale, of a detail in an opening within an outlet basin; [0067] Figure 15 shows a side view, on a different scale, of the geometry of a closed fish tank; [0068] Figure 16 shows the same as figure 15 in another 25/58 shows shows shows shows same even as like figure 15 figure 15 figure 15 a schematic view, in and in another another one shows an entry system view shows a perspective view, in one for one closed top tank, on a scale mode; [0069] Figure 17 modality; [0070] Figure 18 modality; [0071] Figure 19 modality; [0072] Figure 20 different scale, of a protection net for a closed fish tank; [0073] Figure 21 different scale, of one of fish; [0074] Figure 22 different from the input system shown in figure 21; [0075] Figures 23A-B show schematic side views, on a different scale, of a current-creating pipe and an input channel orientation channel; [0076] Figure 24 shows a perspective view, on a different scale, of a closed fish tank equipped with an inlet system, an outlet basin and hoses from the outlet basin to the surface, seen from below; [0077] Figure 25 shows a perspective view, on a different scale, of a closed fish tank equipped with an inlet system and an outlet basin, seen from above; [0078] Figures 26A-C show an alternative current creation pipe shown in figure 23, on a different scale, A) showing a perspective view, B) showing a top view and C) showing a section; [0079] Figures 27A-B show the current creation pipe with 26/58 a rotary damper, on the same scale as figure 26; [0080] Figures 28A-E show a cut, on a larger scale, of the current creation pipe shown in figure 27 with the damper in different external positions; [0081] Figures 29A-C show an alternative modality having the damper inside the current-creating pipe, on the same scale as figure 28; [0082] Figures 30A-C show the current creation pipe with an alternative damper, on the same scale as figure 26; [0083] Figure 31 shows the current creation pipe with an alternative damper, on the same scale as figure 26, [0084] Figure 32 shows the current creation pipe with an additional alternative damper, on the same scale as figure 26 ; [0085] Figure 33 shows an alternative mode of the pump housing of the inlet system, on a different scale, A) with a damper in a closed position, B) with the damper in the open position; [0086] Figure 34 shows a perspective view, on the same scale as Figure 10, of an alternative mode of the outlet basin; [0087] Figure 35 shows a principle drawing, on a different scale, of the regulation of a flow of water out of an outlet basin; [0088] Figure 36 shows an alternative modality to regulate the water flow out of the outlet basin, on the same scale as figure 35 and [0089] Figures 37A-B show, in A), a principle drawing, in a different scale, an additional alternative mode for regulating a flow of water out of an outlet basin and, 27/58 in B), a detail on a larger scale and [0090] Figures 38A-B show an alternative modality of the supply channel of the input system, on a different scale, with two modalities of a filter pipe. [0091] The figures are relatively schematic and show only details and equipment essential for understanding the invention. In addition, the figures may be slightly distorted when they reach relative dimensions of details and components shown in the figures. The figures may also have been drawn in a somewhat simplified way when they reach a form and a wealth of details of such details and components. In the following, equal, equivalent or corresponding details in the figures will be indicated, in general, by the same reference numerals. [0092] In the figures, reference numeral 1 indicates a closed fish tank. The closed fish tank 1 includes a waterproof bag 10 in a cloth material, a flotation system 11 and a grid 13. The fish tank 1 can also include a passageway 15 resting on the flotation system 11 as shown in figure 1. The fish tank 1 further includes an inlet system 2. Inlet system 2 includes a pump 20, as shown in figure 22, positioned within a pump housing 21, an external supply channel 23 leading to the inlet of the pump 20 and an orientation channel 25, as shown in figures 21 to 23, 25, which is in fluid communication at its inlet end 250 with the outlet of the pump 20, the orientation channel 25 extended beyond the flotation system 11 and through the bag 10 and projecting with its other end 259 radially from the bag 10 inside the bag 10, as shown in figure 25. The pump housing 21 is attached to the flotation system 11 with at least one hand support ntage 27. The pump housing 21 can be provided with 28/58 optionally with at least one external float body 218, as shown in figures 1, 21, 22. Inlet system 2 will be described in more detail below. [0093] The flotation system 11 includes at least a first ring 111 and a second ring 112. Rings 111, 112 can have substantially the same diameter and are positioned concentric. The first ring 111 is positioned above the second ring 112. Rings 111, 112 can consist of a polymer material, such as polyethylene. Rings 111, 112 may have been manufactured by means of extrusion and may have circular cross sections. Rings 111, 112 can be formed of pipe sections 115 which are joined by a weld 117, so that a first section of pipe 115 'has a longitudinal direction that deviates from the longitudinal direction of a second pipe section 115 ”. A polygonal ring 111, 112 is hereby formed, as shown in figure 1A. Ring 111, 112 can be 8-sided or 16-sided. The diameter of the first pipe section 115 'can be the same as or different from the diameter of the second pipe section 115 ”. For example, without being restrictive, the diameter of the pipe sections 115 ', 115 ”can be from 400 mm to 1000 mm. The diameter can be smaller than that and the diameter can be larger than that. [0094] The first ring 111 and the second ring 112 are held together by a plurality of elongated, curved, U-shaped plates 119 that are attached to any end portion on the wall of one of the rings 111, 112 and that extend around the next ring 111, 112. In figure 1A, it is shown that the plates 119 are attached to the second ring 112 and that the plates 119 extend around the first ring 111 which is positioned on top of the second ring 112. It is also it is possible that plates 119 are attached to the top of rings 111, 112 and extend around the lower ring 111, 29/58 112 (not shown). Plates 119 can consist of a polymer material, such as polyethylene, or a metal. For example, without being restrictive, plate 119 can be 15 mm thick and 300 mm wide. The length of the plate 119 is equal to the diameter of the close ring 111, 112. [0095] An alternative modality is shown in figure 1B. Plate 119 'is shown in the form of J. Plate 119' is attached to the second ring 112 and plate 119 'extends around a portion of the first ring 111 which is positioned on top of the second ring 112. The plates 119 'can be attached to the second ring 112, so that they alternately face opposite sides as shown in figure 1B. In an additional alternative embodiment (not shown), plate 119 'can be attached to the first ring 111, plate 119' extended around a portion of the second ring 112 positioned below the first ring 111. [0096] The first ring 111 and the second ring 112 are loose in relation to each other and are held together by plates 119, 119 '. This has the advantage that the flotation system 11 maintains the flexibility of each of the rings 111, 112. The invention has the advantage that the flotation force of the flotation system comes close to the bag 10. This is in contrast to the known flotation systems which are composed of two or more concentric rings of different diameters, one ring floating side by side outside the other ring. The buoyancy force of the outer ring contributes less than the buoyancy force of the inner ring to keep the bag 10 floating. [0097] The grid 13 forms a fence as it is known within the art. The grid 13 can be composed of tubular elements in a polymer material, such as polyethylene. The grid 13 is attached to the upper ring 111 in a manner known to you. Grid 13 can support an obstacle net (not shown) and grid 13 can be 30/58 a fixation for a bird net (not shown) as this is known within the art. Fixing devices for the bag 10 or for a common trawler can be welded to the upper ring 111, 112. [0098] In an embodiment not shown, the invention can be combined with a third ring (not shown) that has a larger diameter and that floats side by side with and on the outside of the upper ring 111. The third ring can have a diameter that is smaller than the rings 111, 112. The third ring can be attached to the upper ring 111 by a plurality of clips of a type known per se. This has the advantage of allowing the passage 15 to be wider and more stable, since the passage 15 can rest on the two rings. [0099] The person skilled in the art will understand that the flotation system 11 can include more than two concentric rings 111, 112 of substantially the same diameter that are positioned above each other. The person skilled in the art will also know that the flotation system 11 is not restricted to use in a closed fish tank 1, but can also be used for an open fish tank of a type known to you. [00100] Figure 2 shows a first exemplary embodiment of a suspension device 3 for remotely securing the bag 10 in the flotation system 11. At its upper edge 101, the bag 10 is formed with a longitudinal thickening 103 or bulb. Bulb 103 can be formed in a manner known by the cloth 105 of the bag 10 being folded around an elongated body 107, such as a rope or cable and the cloth 105 being fastened to it by means of a fixing device, for example. example, with a seam 109 or with a glue, or through a combination of various fixing devices, so that the elongated body 107 is enveloped in bulb 103, as shown in figure 3. Along a side edge, the dis 31/58 positive suspension 3 is provided with a groove 33. The groove 33 is formed with an elongated inlet portion 35 between two opposite edges 37, 37 'and a substantially circular elongated cavity 39. The diameter of the cavity 39 is larger than that the distance between the two opposite borders 37, 37 '. The diameter of the cavity 39 is slightly larger than the diameter of the bulb 103 of the bag 10. The diameter of the bulb 103 is greater than the distance between the edges 37, 37 '. The suspension device 3 is movable along the bulb 103 in the longitudinal direction of the bulb 103. [00101] The suspension device 3 is provided with a hollow opening 32 which has a longitudinal geometric axis 34 extended substantially perpendicular to the longitudinal direction of the cavity 39. In the application position, the hollow opening 32 is positioned above the cavity 39. A member elongated fastening device 36, such as a rope, a spy, a cable or a strip is passed through the hollow opening 32 and secured in the flotation system 11. [00102] Bag 10 is composed of a plurality of sectors (not shown) which are joined at its side edges by means of a fixing device, for example, with a seam or with a glue or by means of a combination of several fixing devices. The sectors consist of a cloth in a polymer material and can be provided with additional reinforcement. A suitable polymer material is polyurethane. The reinforcement may consist of a tissue reinforcement as is known within the art. Bulb 103 is formed before the sectors are joined at their upper edges. The suspension device 3 is slid over the bulb 103 before the sectors are joined at its upper edges. The suspension device 3 is movable along the bulb 103 in the longitudinal direction of the bulb 103. The suspension device 3 is shorter than the bulb 103 of a sector. A plurality of suspension devices 103 can be slid 32/58 on bulb 103 of a sector. This has the advantage that the system of the suspension device 3 is movable sideways on the bulb 103, so that the fixing member 36 is positioned relative to the desired location in relation to the fixing device (not shown) of the flotation system 11 for the fixing member 36. Hereby it is obtained that the bag 10 maintains its stretched form without folds and folds when the bag 10 is attached to the flotation system 11. [00103] The suspension device 3 is shown in an alternative embodiment in figures 5 and 7. The suspension device 3 consists of a female part 31 and a male part 38. On its coupling side 311, the female part 31 is provided with an elongated hollow circular profile 319. An edge 37 'extends between the hollow profile 319 and an end edge 30. On its coupling side 311, the female part 31 is further provided with at least one substantially extended elongated groove 313 side by side with the elongated hollow profile 319. In the figures, two grooves 313 are shown. The groove 313 includes an outer opening portion 315 facing outwardly towards the coupling side 311 and an inner cavity 317. The cavity 317 has a diameter greater than the width of the inlet portion 315. [00104] On its coupling side 381, the male part 38 is provided with at least one elongated projected guide 383. In the figures, the male part 38 is shown with two guides 383. The guide 383 includes a head portion 387 and a neck 385. The head portion 387 and the neck 385 complementarily fit the cavity 317 and the opening portion 315, respectively, of the female part 31. The length of the neck 385 in the direction of the projection of the coupling side 381 is equaled with the depth and width of the opening portion 315. The diameter of the head portion 387 is slightly less than the diameter of the cavity 317, as shown in the figures. On your side of 33/58 coupling 381, the male part 38 is further provided with an elongated hollow circular profile 389. A rim 37 extends between the hollow profile 389 and an end edge 30. [00105] When a loose male part 38 is moved to the side relative to a loose female part 31, the guide 383 is moved into the groove 313. The coupling side 381 of the male part 38 faces the coupling side 311 of the female part 31. The hollow profile 319 and the hollow profile 389 together form an elongated cavity 39 with an opening 35 between the edges 37, 37 '. The same result is obtained by moving the female part 31 to the side in relation to the male part 38. The head portion 387 of the guide 383 cannot be pulled aside through the opening portion 315 of the groove 313. A separation between the part female 31 and the male part 38 by breaking the coupling side 311 and the coupling side 38 in a direction perpendicular to those coupling sides 311, 318 is thereby prevented. [00106] The female part 31 is provided with a hollow opening 312 of an external side face 318 for the coupling side 311. The male part 38 is provided with a hollow opening 382 of an external side face 388 for the coupling side 381 The female part 31 is displaced relative to the male part 38, or vice versa, until the hollow opening 312 coincides with the hollow opening 382. The two hollow openings 312, 382 form a hollow opening 32 in the suspension device 3. Opening 32, which has a longitudinal geometric axis 34, extends substantially perpendicular to the longitudinal geometric axis of cavity 39. In the application position, the hollow opening 32 is positioned above cavity 39. An elongated fixing member 36, such as a rope, spy, cable or strip is passed through the hollow openings 312 and 382. The fixing member 36 locks the female part 31 and the male part 38 so that, 34/58 practically, they cannot be moved to one side in relation to the other. The fixing member 36 is attached to the flotation system 11. [00107] The female part 31 and the male part 38 can consist, for example, of a metal, such as aluminum and are formed as rods being extruded in a manner known per se. In another embodiment, the female part 31 and the male part 38 may consist of a hard polymer material. When necessary, a piece of an appropriate length is cut from the series. The openings 312 and 382 are then formed in the desired positions in the female part 13 and in the male part 38, respectively, by means of drilling or milling, for example. [00108] A two-part suspension device 3 that includes a female part 31 and a male part 38 has the advantage of allowing the suspension system to be fitted on a bulb 103 in a bag 10 after the bag 10 has been fully assembled , for example, to reinforce the attachment of the bag 10 to a float system 11 while the bag 10 is filled with water. The suspension device 3 can also be removed from the bag 10 whenever necessary. [00109] An alternative embodiment of a two-part suspension device 3 is shown in figures 6 and 8. In that embodiment, the female part 31 is formed as in the previous embodiment shown in figures 5 and 7, but without the hollow opening 32. The male part 38 is also formed with at least one guide 383 and a hollow profile 389 and these are not described further. The male part 38 is formed without the hollow opening 382. The male part 38 is provided with at least one hollow hole 380 extended substantially side by side with the hollow profile 389 of an end face 384 of the male part 38 to the end face opposite 384 '. An opening 386 is formed between an outer side 388 of the male part 38 and the hole 380, as shown 35/58 in figure 8. A threaded pin 314 can be passed through hole 380 of one of the end faces 384, 384 'and secured with a nut 316 on the opposite end face 384, 384'. A fixing member 36 can be passed into opening 386 and around pin 314 and out of opening 386 again. The fixing member 36 can be attached to the flotation system 11. In this embodiment, the female part 31 and the male part 38 need to be supported together with one or more direct screws or fixing screws 310 perpendicular to the coupling side 381, so as to prevent the female part 31 and the male part 38 from being displaced sideways with respect to each other. [00110] Figure 9 shows an outlet bowl 4 for a fish tank 1. The outlet bowl 4 can be used in an open fish tank 1 of a type known to you, in a closed fish tank 1 with walls rigid and in a closed fish tank 1 with walls in a soft cloth-like material. The outlet bowl 4 is positioned in an opening in the lower portion 179 of the fish tank 1. The outlet bowl 4 includes a housing 41. In the drawings, housing 4 is shown as a circular cylinder, but housing 41 may also have other cross sections, such as a polygonal cross section. In an upper portion 410, the housing 41 is provided with a flange 411 for attaching a mounting collar 43. In a lower portion 439, the mounting collar 43 is provided with a flange 431 for attaching to the flange 411 of the housing 41. Flanges 411, 431 can be secured together with a plurality of pins as is known in the art. The housing 41 is provided with a hollow opening 413 in a lower portion 419, as shown in figure 14, and the opening 413 leads into a first pipe socket 415 projected radially from the outer casing of the housing 41. 36/58 [00111] In an upper portion 430, the mounting collar 43 is provided with a clamping ring 433. The clamping ring 433 protrudes radially, in an enveloping manner, from the mounting collar 43. The clamping ring 433 is arranged to be trapped in an open fish tank 1, a closed fish tank 1 with rigid walls or in a closed fish tank 1 with walls made of a soft material in the form of cloth. One skilled in the art will know how it can be done and it is not described further. [00112] Housing 41 houses a free passage outlet channel 45. In its upper portion 450, outlet channel 45 is provided with an inlet portion 451, as shown in figure 12. In the inlet portion 451, a filter 453 is attached, covering the cross section of the outlet channel 45. The filter 453 is shown as a cone with its apex protruding upwards. The filter 453 is provided with a plurality of hollow holes 454. The outlet channel 45 is opened in its lower portion 459. The lower portion 459 projects below the lower portion 419 of the housing. The lower portion 459 is formed with recesses 455. The outlet channel 45 is shown as a circular cylinder, but the outlet channel 45 may also have other cross sections, such as a polygonal cross section. The housing 41 and the outlet channel 45 form an annular space 46 between them. [00113] An inclined grid 47 is positioned in the annular space 46. The grid 47 is attached to the inner lining of housing 41 and the outer lining of outlet channel 45. Grid 47 keeps outlet channel 45 attached to housing 41. A grid 47 shown includes ribs 471 that are oriented side by side, in which water and sediment can pass between ribs 471. In an alternative embodiment, grid 471 may include a sieve plate 47, in which the number of holes and the diameter of the holes were matched for the purpose (not shown). The lower portion 479 of grid 47 is attached 37/58 in the internal lining of housing 41 just below the hollow opening 413, as shown in figure 14. The highest portion 470 of the grid 47 is positioned on the diametrically opposite side in the annular space 46. The grid 47 covers the entire annular space 46 . [00114] An inclined bottom plate 49 is positioned in the annular space 46 below the grid 47 and seals the annular space 46 against the housing 41 and the outlet channel 45. The lower plate 49 keeps the outlet channel 45 fixed in the housing 41. The bottom plate 49 can consist of a solid plate or consist of a fine mesh material. The bottom plate 49 can be oriented substantially side by side with the grid 47 as shown in the figures. This is not critical to the invention, since the bottom plate 49 can tilt in a direction other than that of the grid 47. A hollow opening 493 is formed in the lower portion 499 of the bottom plate 49 on the surface of the inner lining of the housing 41, as shown in figures 12 and 14. Opening 493 leads into a second pipe socket 495 on the underside of bottom plate 49. In an alternative embodiment (not shown), opening 493 can be positioned in housing 41 and the lower portion The lower 499 of the lower plate 49 is attached to the internal lining of the housing 41 just below the hollow opening 493. The opening 493 leads into the second pipe socket 495 which, in this alternative exemplary embodiment, protrudes radially from the external lining of the housing 41. [00115] A first outlet hose 91 is secured with a seal at a lower end 919 to the first pipe socket 415, as shown in figure 13. At its upper end (not shown), outlet hose 91 is extended to a first suction pump (not shown) on the surface. The first suction pump is arranged to suck water through the outlet hose 91. A second outlet hose 99 is secured with a seal at one end 38/58 lower end 999 on the second pipe socket 495. At its upper end (not shown), the outlet hose 99 is extended to a second suction pump (not shown) on the surface. The second suction pump is arranged to suck water through outlet hose 99. The first suction pump and the second suction pump can consist of the same pump. The person skilled in the art will know that the first suction pump can be replaced by a so-called mammoth pump that works by blowing air into the lower portion of the outlet hose 91, so that a gas lift is created in the outlet hose 91. Correspondingly, the second suction pump can also be replaced by a mammoth pump. [00116] Due to the fact that an overpressure is formed inside the closed fish tank 1 when water is pumped into the fish tank 1, the water will flow out through accessible openings. The outlet bowl 4 is positioned in such an opening in the lower portion 179 of the fish tank. Exit channel 45 is formed in such a way that water can flow freely out of fish tank 1 through outlet channel 45. Filter 453 prevents the fish in fish tank 1 from swimming out through the outlet channel 45. The filter 453 is provided with a large number of holes 454 to allow a large flow of water through the outlet channel 45. [00117] Dead fish (not shown) sink to the bottom 179 of fish tank 1 and further to the sloping bottom 172 of the fish tank. The water flow will transport the dead fish to the outlet basin 4. The fish will be discarded by the 453 cone-shaped filter and will sink to the annular space 46. Fish sinking directly into the fish tank 1 can hit the 453 filter and be guided into the annular space 46. In the annular space 46, the fish will rest on the inclined grid 47. The fish can also 39/58 will slid by their own weight in grid 47 to opening 413 in housing 41. Whenever required, the first pump is started on the surface. The water is sucked up through the outlet hose 91. The water is thus pulled down from the annular space 46 and exits through opening 413. The fish in grid 47 will be transported by the water flow out through opening 413, through the first outlet hose 91 and to the pump where the fish are separated from the water flow in a filtering vessel and are cared for in a known way of treating dead fish. [00118] The sediment, fecal matter and other particles sinking to the sloping bottom 172 of the fish tank 1 will sink further down towards the lower portion 179 of the fish tank and into the annular space 46. When necessary, the second pump is started on the surface. Water is sucked up through outlet hose 99. Water is thus pulled down into the annular space 46, flowing beyond the ribs 471 in the grid 47 or the holes in the sieve plate 47 and out through from opening 493. The sediment and light particles are transported in the water flow out through the opening 493, through the second outlet hose 99 to the pump where the sediment, faecal matter and particles are separated from the water flow and are handled in a known way of treating such material. [00119] Over time, particles will settle on filter 453 and filter 453 may become clogged with marine organisms (not shown). Holes 454 will thus have a less effective opening for the passage of water. The reduced water flow leads to an increase in the height difference of the water surface 17 'inside the fish tank 1 compared to the water surface 17 outside the fish tank 1. This leads to a greater load on the bag 10 and the system float 11 of the fish tank 1. The filter 453 can be provided with a system 40/58 ma brush (not shown) to clean the 453 filter. Such a brush system can be operated manually or it can be equipped with a motor or actuator for operation. [00120] An alternative embodiment of an outlet bowl 4 'is shown in figure 34. In the inlet portion 451, a filter 453' is attached, covering the cross section of outlet channel 45. The filter 453 'includes an upper plate relatively flat 456. Between the outer edge of the top plate 456 and the edge of the outlet channel 45, a plurality of ribs 457 extend side by side. Between the ribs 457, elongated openings 454 'were formed, forming filter slits 454'. This design has the advantage that the effective filtering area is not restricted by the cross section of the outlet channel 45, but by the height of the filter 453 '. The height can be very large. Another advantage is that the filter slots 454 'are not so easily clogged with particles and the need for cleaning the filter 453' is reduced. The ribs 457 may consist of pipes. [00121] In figure 35, a regulator of the self-adjusting filter 48 is shown. The filter regulator 48 includes a regulator sleeve 480 that is positioned outside the filter 453 'shown in figure 34 and a control mechanism. The regulator sleeve 480 is movable in relation to the filter 453 '. The filter regulator 48 may include an open regulator sleeve 480, or the regulator sleeve 480 may be provided with a cap or sealing plate (not shown) at the top. Regulator sleeve 480 is attached to a cable or rope 481. In figure 35, it is shown that cable 481 is attached to the upper portion of regulator sleeve 480. Cable 481 was extended to and over a first pulley 482 'in middle portion of the fish tank 1, so that the cable 481 has a substantially vertical orientation. From the first pulley 482 ', the cable 481 has been extended to and over a second pulley 482 ”. The second pulley 482 ”is positioned on the side edge of the fish tank 1. 41/58 From the second pulley 482 ”, the cable 481 was extended downwards to and over a third pulley 482 '”. The third pulley 482 '”is positioned submerged on the side edge of the fish tank 1. From the third pulley 482'”, the cable 481 was extended to a buoy 483 on the surface of the water 17 'inside the fish tank 1. The first pulley 482 'is housed in a block 485 attached to a plurality of lines 484 which are attached to separate float bodies 11' and which extend to the middle portion of the fish tank 1. The fish tank 1 can be provided with three lines 484 or more than three lines 484, for example, six lines 484, which are attached to each other in the middle portion of the fish tank 1. Lines 484 can be, for example, at a distance of 0.5 m to 1, 0 meter above the water surface 17 '. The third pulley 482 '”can be positioned, for example, at a depth of 0.5 meter to 1.0 below the water surface 17'. [00122] If the water level inside the fish tank 1 increases because of the reduced filtering area in the filter 453 ', the float 483 will rise slightly. The outlet bowl 4 in the lower portion 179 of the fish tank 1 will sink because the greater weight of the water inside the fish tank 1 lowers the flotation system 11 and thereby the bag 10 attached to the flotation system 11. As buoy 483 rises slightly in the opposite direction to that of sinking outlet bowl 4, and lines 484 are attached to their separate floating bodies 11 ', buoy 483 will stretch cable 481 and move regulator sleeve 480 upwards relative to the 453 'filter. The filtering area of the filter 453 'thereby increases and the flow of water through the outlet bowl 4 increases. As a result, the amount of water in the fish tank 1 decreases and the float 483 will stretch the regulator sleeve 480 which is displaced downwards relative to the filter 453 '. The filter regulator 48 will therefore be self-adjusting. [00123] An alternative filter regulator 48 'is shown in the figure 42/58 36. The filter regulator 48 'includes a regulator sleeve 480 that is positioned outside the filter 453' shown in figure 34. The filter regulator 48 'can include an open regulator sleeve 480 or the regulator sleeve 480 can be provided with a cover or sealing plate (not shown) on top. Regulator sleeve 480 is attached to a cable or rope 481 in its upper portion. The cable 481 has been extended to and over a first pulley 482 'in the middle portion of the fish tank 1, so that the cable 481 has a substantially vertical orientation. From the first pulley 482 ', the cable 481 has been extended to a first winch 486'. The first winch 486 'can be attached to grid 13 of the fish tank. A second winch 486 ”is attached to the diagonally opposite side of fish tank 1, for example, to grid 13 of fish tank 1. A centering cable 487 is attached at one end to block 485 and at its opposite end to the second winch 486 ”. [00124] The second winch 486 ”adjusts the free length of the centering cable 487, so that the block 485 is positioned above the outlet bowl 4 in the middle portion of the fish tank 1. The first winch 486 'controls the free length the cable 481 and thereby the position that the sleeve of the regulator 480 has relative to the filter 453 '. The flow of water out through the outlet bowl 4 is actively adjusted by means of the first winch 486 '. A higher flow is achieved by shortening the free length of the cable 481, so that the sleeve of the regulator 480 is moved upwards along the filter 453 'and the effective filtering area is increased. A reduced flow of water is obtained by extending the free length of the cable 481, so that the regulator sleeve 480 is moved down along the filter 453 'and the effective filtration area is reduced. [00125] In the event of a loss of electrical power, the first winch 486 'or both the first winch 486' and the second winch 43/58 486 ”is / are arranged to strip cable 481, 487. Regulator sleeve 480 will thus be moved completely down along filter 453 'and the flow of water through outlet bowl 4 will virtually stop. This has the advantage that a loss of electrical power that results in the pumps 20 stopping the water supply to the fish tank 1 does not result in the water flowing out of the fish tank 1 and the fish tank 1 maintains its shape. An alternative filter regulator 48 ”is shown in figure 37. The filter regulator 48” includes a regulator sleeve 480 that is positioned outside the filter 453 ', as shown in figure 34. In this alternative embodiment, the regulator sleeve 480 is displaced relative to the filter 453 'by a control mechanism including an actuator 488. The filter regulator 48 ”can include an open regulator sleeve 480 or the regulator sleeve 480 can be provided with a cover or a sealing plate ( not shown) at the top. The 488 actuator can be a flexible pipe or a flexible solid stem. Actuator 488 is moved within a guide pipe 489. Actuator 488 and guide pipe 489 can form a pipe-to-pipe connection. Actuator 488 is attached to regulator sleeve 480. Actuator 488 and guide tube 489 extend from outlet channel 45 of outlet bowl 4, to the surface of water 17 outside fish tank 1 and above the surface of the water 17. Actuator 488 extends through outlet channel 45, filter 453 'and projects above filter 453' into an opening in the top plate 456 of filter 453 '(not shown). The guide tube 489 is shown attached to a lower fixture 489 'and an upper fixture 489 ”. The fixings 489 ', 489 ”are fixed inside the outlet channel 45. The actuator 488 projects out of the guide pipe 489 above the upper fixture 489”. [00126] Actuator 488 can be operated manually, for example, from flotation system 11 of fish tank 1. The actuator can also be operated by a motor, for example, an electric motor 44/58 (not shown), arranged to move the actuator 488 in relation to the guide pipe 489. The operation of the motor can be arranged in such a way that when there is a loss of electrical power, the regulator sleeve 480 will sink into the filter 453 'by his own weight. [00127] Regulator sleeve 480 in the described modes can be produced with a flotation device (not shown), so that regulator sleeve 480 has little negative fluctuation, for example, a fluctuation of -10 kg or -20 kg . [00128] Figures 15 to 19 show a closed fish tank 1, in which the upper portion 170 of the fish tank is formed with a spherical shape and the lower portion 179 of the fish tank 1 is formed with a conical shape. In the figures, the depth of the fish tank 1 is shown by arrow D. The depth D of the fish tank 1 extends from the surface of the water 17 to the outlet of the fish tank 1 in the lower conical portion 179. The depth (Ds) the spherical top portion 170 extends from the water surface 17 to the transition between the spherical top portion 170 and the tapered bottom portion 179. The depth (Dc) of the tapered bottom portion 179 extends from the transition between the spherical top portion 170 and the conical lower portion 179 for the outlet of the basin in the lower conical portion 179. This has the advantage of fish tank 1 combining the properties of a spherical fish tank with the properties of a conical trawler. Therefore, fish tank 1 will achieve good sea properties combined with a large volume. The fish tank 1 also has the advantage that the sloped bottom 172 of the fish tank 1 has a greater slope than the bottom of a spherical fish tank of the same diameter. Sediments and deposits will therefore be more easily transported to the fish tank 1. [00129] In one embodiment, the imaginary radius length r of the spherical upper portion 170 can substantially coincide with the 45/58 depth D of fish tank 1, as shown in figures 15 and 16. In another embodiment, the length of the imaginary radius r of the spherical upper portion 170 may be shorter than the depth D of fish tank 1, as shown in figures 17 to 19. It may be advantageous that the lower conical portion 179 of the fish tank 1 meets the spherical upper portion 170 at the tangent, as shown in figures 17 to 19. This has the advantage of having a uniform transition between the portion upper 170 and the lower portion 179 of fish tank 1. [00130] In one embodiment, the bottom tapered portion 179 of fish tank 1 may exhibit a depth Dc that constitutes substantially half the depth D of fish tank 1, as shown in figures 15 and 17. In an alternative embodiment, the portion tapered bottom 179 of fish tank 1 can exhibit a depth Dc that constitutes practically a quarter of the depth D of fish tank 1 as shown in figures 16 and 18. In an additional alternative embodiment, the tapered bottom portion 179 of fish tank 1 can display a Dc depth that constitutes practically 3/8 of the depth D of fish tank 1 as shown in the figure 19. In additional embodiments, the conical portion 179 may exhibit a depth D c consisting of a quarter to half the depth D of the fish tank 1. [00131] Figure 20 shows schematically a protective net 5 for a closed fish tank 1, the wall of the fish tank 1 comprising a soft material in the form of cloth. The protective net 5 includes a plurality of straps 51 side by side, substantially horizontal in the application position. Each horizontal belt 51 can form a horizontal ring 53. The diameter of the rings 53 decreases from the upper portion 50 of the protective net 5 to the lower portion 59 of the protective net 5. A plurality of vertical straps 46/58 55, 56 extends from at least one ring 53 to a close ring 53 and each vertical strap 55, 56 is attached to each one. Straps 53, 55, 56 can be secured together by sewing. Some vertical straps 55 extend continuously from the upper portion 50 of the protective net 5 to the lower portion 59 of the protective net 5. Other vertical straps 56 extend only over a portion of the protective net 5. For the purpose of exposure, the vertical straps 55, 56 were designed only halfway through the circumference of the protective net 5. [00132] The belts 53, 55, 56 of the protection net 5 can consist of wide bands. Lifting straps of a type known to you are suitable for the purpose. In its lower portion 59, the protective net 5 is provided with a fixing device of a type known to you for fixing to the fish tank outlet system 1. The outlet system can include an outlet bowl 4 and the straps uprights 55 can be attached to the mounting collar 43 of the outlet bowl 4. In its upper portion 50, the protective net 5 is provided with a fixing device of a type known to you for the adjustable fixing of the protective net 5 in the system float 11 of the fish tank 1. The protective net 5 can be tightened or loosened vertically in relation to the float system 11. [00133] The protective net 5 is joined in such a way that the lengths of horizontal belts 51 and vertical belts 55, 56 are matched with the outer geometry of a closed fish tank 1 when the fish tank 1 is filled with water . The external geometry of the closed fish tank 1 can be composed of a spherical upper portion 170 and a tapered lower portion 179. The protective net 5 is positioned outside a closed fish tank 1. The protective net 5 stabilizes the shape of the closed fish tank 1, in which the walls comprise a soft material in the form 47/58 of cloth. The protective net 5 also helps the cloth 105 of a closed fish tank 1, so that it can resist greater forces before tearing. [00134] The inlet system 2 of the fish tank 1 includes a pump 20, as shown in figure 22. The pump 20 is positioned inside the pump housing 21. The guidance channel 25 is in fluid communication, at its end inlet 250, with pump outlet 20. The guiding channel 25 extends beyond the flotation system 11 and through the cloth 105 of the bag 10 and protrudes radially with its inner opposite end 259 of the bag 10 into the bag 10 , as shown in figure 25. Orientation channel 25 is extended in a way of sealing the fluid through the cloth 105. This can be done through the opening 106 of the cloth 105, see figure 25, being produced with a collar (not shown) on the outside of the cloth 105. The guide channel 25 is extended through the collar. The collar can be sealed against the guide channel 25 with a hose clamp, as is known in the art. The direct fluid-proof passage of the guidance channel 25 in the cloth 105 has the advantage that surface water, which may contain pathogenic organisms, cannot enter the fish tank 1 through the opening 106. [00135] The inner end 259 of the orientation channel 25 is formed as a socket 258. A T-shaped pipe 26 is positioned, with its pipe-shaped section 260, into socket 258. Socket 258 and section 260 are produced with a device of a type known per se that prevents the T-shaped pipe 26 from rotating around its longitudinal geometric axis in socket 258. Such a device may include welding, clamping pins or ears and associated grooves, for example. The T-shaped pipe 26 is provided with a tubular head 269, as shown in figure 23A. Head 269 has a longitudinal geometric axis that is perpendicular to the axis 48/58 longitudinal geometric section 260. The head 269 forms a sleeve 269. On a side wall, the sleeve 269 is produced with an inlet (not shown) that fits in a complementary way on the pipe section 260. The sleeve 269 is welded in section 260 in a fluid-proof manner. [00136] An elongated chain creation pipe 6 is extended with its upper end portion 60 inward and through the sleeve 269. The chain creation pipe 6 can be rotated about its longitudinal geometric axis in the sleeve 269. In the its external lining, the chain-creating pipe is provided with an upper stop ring 61 and a lower stop ring 63. In the application position, the upper stop ring 61 is positioned above the sleeve 269. The lower stop ring 63 is positioned under sleeve 269 in the application position. Stop rings 61, 63 have the function of not allowing the chain-creating pipe 6 to be moved vertically upwards or downwards in sleeve 269. [00137] The chain-creating pipe 6 is provided with a plurality of openings 65 arranged in one or more rows 67 of holes in the surface of the chain-creating pipe 6. The at least one row 67 of holes is oriented along the longitudinal direction of the flow-creating pipe 6. The fluid can flow from the internal channel of the flow-creating pipe 6 out through the openings 65. The upper end portion 60 of the flow-creating pipe 6 is provided with a cover seal 62. The upper end portion 60 of the current-creating pipe 6 is further provided with an operating device 64, as shown in figure 23. The operating device 64 can be operated manually or by means of an actuator (not shown ) of a type known to you. The operation of the operating device 64 causes the current-creating pipe 6 to rotate about its longitudinal geometric axis. On a portion of the pipe wall 49/58 between the upper stop ring 61 and the lower stop ring 63, the chain-creating pipe 6 is provided with an oval opening with a direct passage 68. The opening 68 has a height corresponding to the diameter of the channel interior of section 260 and the inlet of sleeve 269. Opening 68 has a length that is greater than the height, so that opening 68 does not obstruct fluid flow through the T-shaped pipe 26 when the breeding pipe chain 6 is rotated by means of the operating device 64. The sleeve 269 and the chain-creating pipe 6 are provided with a type-known device (not shown) reducing the freedom of rotation of the chain-creating pipe 6 , so that a portion of the opening of the flow-creating pipe 6 will always correspond with the inlet of the sleeve 269. The flow-creating pipe 6 can be turned to a position in which a beneficial circulation of water is established within the flow tank. fish s 1. The water circulation depends on the amount of water flowing through the inlet system 2, the water pressure, the diameter and volume of the fish tank 1, the speed of the water flowing out of the current breeding pipe 6 and the size and placement of the openings 65, among other things. The fish tank 1 can be provided with more than one inlet system 2, as shown in figures 24 and 25. [00138] The T-shaped pipe 26 can be optionally supplied with at least one internal floating body 283. The chain-creating pipe 6 hangs on the T-shaped pipe 26 and on the channel 25 and without any bag support 10 of the fish tank 1. The floating body 283 acts against the deflection forces in the T-shaped pipe 26 and in the guidance channel 25. [00139] The openings 65 can be formed in a circular shape, in an oval shape or in the form of elongated slits. Row 67 of holes may extend from the lower end portion 69 of the hole 50/58 in the chain creation 6 for the lower stop ring 63. In the embodiment shown, row 67 of holes extends from the lower end portion 69 of the chain creating pipe 6 in addition to the upper stop ring 61. Diametrically opposite the inlet, the sleeve 269 is provided with slots 265 into which the openings 65 positioned between the stop rings 61 and 63 lead. In the portion between the opening 68 and the upper stop ring 61, and in the portion between the opening 68 and the lower stop ring 63, the chain-creating pipe 6 is provided with sealing elements, such as O-rings, sealing the annular space between the flow pipe 6 and sleeve 269. In its lower portion 69, the flow pipe 6 is provided with a sealing cap (not shown), so that water can escape from the flow pipe chain 6 only through openings 65. [00140] An alternate current creation pipe 6 'is shown in figure 26. The current creation pipe 6' is attached in its upper portion 60 'in the orientation channel 25, so that water can flow through the channel orientation 25 into the chain-creating pipe 6 'through an opening 68'. The chain-creating pipe 6 'is provided with a plurality of openings 65' in a row 67 'of holes in the surface of the chain-creating pipe 6'. The openings 65 'have a length along the circumference of the chain-creating pipe 6' which may be the same as or greater than the width of the openings 65 'along the longitudinal direction of the chain-creating pipe 6'. The openings 65 'can have a rectangular shape as shown in figure 26. [00141] In one embodiment, the chain-creating pipe 6 'can be provided with a buffer member 600, as shown in figure 27. The buffer member 600 includes a first side plate 611 and a second side plate 613. The side plates 611, 613 extend in the longitudinal direction of the chain-creating pipe 6 '. THE 51/58 the distance between the opposite edges of the side plates 611, 613, the edge 621 and the edge 623, respectively, is shown to be shorter than the width of the opening 65 ', but the distance may also be the same as the width opening 65 'or greater than the width of opening 65'. Transverse plates 615 between side plates 611, 613 maintain the distance between side plates 611, 613. Transverse plates 615 are provided with hollow openings 631. Openings 631 have a longitudinal direction along the circumference of the current-creating pipe 6 '. A screw 633 can be passed through opening 631 and stuck in a threaded hole 635 on the surface of the chain-creating pipe 6 '. On its external surface, the chain-creating pipe 6 'is provided with locks 637 on either side of the row 67' of holes. By means of an operating device (not shown), the damping member 600 can be rotated from side to side around the longitudinal geometric axis 699 of the chain making pipe 6 'until the outer edge 618 of the side plate 611 or the outer edge 619 of side plate 613 hits lock 637, 637 '. This is shown in figure 28. Screw 644 in opening 631 will also restrict the rotational movement of damper member 600. Damper member 600 can be positioned outside the chain creating pipe 6 ', as shown in figures 27 and 28. In in an alternative embodiment, the damping member 600 can be positioned inside the chain-creating pipe 6 ', as shown in figure 29. [00142] An alternative buffer member 600 'is shown in figure 30A. The damping member 600 'includes a first side plate 611' and a second side plate 613 '. The side plates 611 ', 613' extend in the longitudinal direction of the chain-creating pipe 6 '. The distance between the opposite edges of the side plates 611 ', 613', the edge 621 'and 623', respectively, is shown to be shorter than the width of the opening 65 ', but the distance can also be the 52/58 the same as the width of the opening 65 'or greater than the width of the opening 65'. Circumference bands 616 between the side plates 611, 613 maintain the distance between the side plates 611, 613. The circumference band 616 extends around the circumference of the current creating pipe 6 '. The number of circumference bands 616 is matched with the number of openings 65 'in the chain-creating pipe 6'. By means of an operating device (not shown), the damping member 600 'can be rotated from side to side around the longitudinal geometric axis 699 of the chain making pipe 6' until the outer edge 618 'of the side plate 611 'or the outer edge 619' of side plate 613 'tap lock 637, 637'. By means of a second operating device (not shown), the damping member 600 'can be moved in the axial direction in a first direction along the longitudinal geometric axis of the current-creating pipe 6', so that a portion of the strip circumference 616 covers a portion of the opening 65 '. The damping member 600 'can be moved in a second direction along the longitudinal geometric axis of the chain making pipe 6', so that the entire circumference band 616 is positioned above or below the opening 65 'when the damping member 600 'is in an open position. The circumference strip 616 can be so wide that it covers the entire opening 65 'when the damping member 600' is in a closed position. Some of the circumference bands 616 can be replaced with transverse plates 615 '(not shown). [00143] An alternative buffer member 600 ”is shown in figure 30C. The damping member 600 ”is provided with a clamp plate 617. The clamp plate 617 extends in the longitudinal direction of the current-creating pipe 6 'and connects the circumference bands 616. In the application position, when the damping member 600 'surrounds the chain creation pipe 6', the bra plate 53/58 chair 617 will be positioned on the diametrical side of the chain creation pipe 6 'relative to row 67' of holes. [00144] An additional alternative damping member 650 is shown in figure 31. Damping member 650 includes a plate 651 that is movable in the longitudinal direction of the current creating pipe 6 'by means of a first operating device 660. Plate 651 it can be moved on guides 653 on the outside of the chain creation pipe 6 '. The movement of the plate 651 in the longitudinal direction is restricted by a lock 654 and the operating device 660. The plate 651 is provided with a plurality of openings 655 corresponding to the openings 65 'in shape and number. Opening 655 may be slightly wider than opening 65 ', but the opening may also be the same size as opening 65' or slightly smaller than the size of opening 65 '. In one embodiment, the damping member 650 is provided with two rows of rudders 670, so that there is a rudder 670 on each side of each opening 665. Each rudder 670 is attached to plate 651 by a hinge 656. Rudders 670 in a row 671 of rudders are connected at their free ends to a rod 673, in such a way that rudders 670 in a row 671 rudders have the same angle relative to the surface of the chain-creating pipe 6 '. Rod 673 of first rudder row 671 and rod 673 'of second rudder 671' are connected by connecting rods 674, so rudders 670 of first rudder 671 move together with rudders 670 of second row 671 'of rudders. The rudder rows 671, 671 'are moved by means of a second operating device 680. The first operating device 660 is shown as a pipe-to-pipe connection. An external pipe 661 is attached, while the internal pipe or alternatively a solid flexible rod 663 can be displaced inside the external pipe 661. The external pipe 661 is fixed to the chain creating pipe 6 ' 54/58 with a support 665. The inner pipe 663 is connected to the upper portion 659 of the plate 651. The inner pipe 663 can move the plate 651 in an axial direction up and down along the surface of the current-creating pipe 6 '. The second operating device 680 is shown as a pipe-to-pipe connection. The external pipe 681 is fixed, while the internal pipe or alternatively a solid flexible rod 683 can be displaced inside the external pipe 681. The external pipe 681 is fixed to the chain creating pipe 6 'with a support 685. The internal pipe 683 is connected to one of the tie rods 674. The internal pipe 681 can move the tie rod 674 sideways to both sides in relation to the opening 65 '. Both rudder rows 671, 671 'are thus rotated with respect to opening 65'. An alternative buffer member 650 'is shown in figure 32. In this alternative embodiment, buffer member 650' includes a row 671 ”of rudders. Row 671 ”of rudders is positioned in a centralized manner over openings 655. Inner tube 683 is attached to rod 673. [00145] The operating devices 660, 680 can be composed of other types of actuators, such as electric, pneumatic or hydraulic, as is known in the art. [00146] When the damping member 600 shown in figure 27 is turned as shown in figure 28 or 29, one of the side plates 611, 613 will cover a portion of the opening 65 '. The direction of flow of water out of the flow pipe 6 'is determined by the position of the side plate 611, 613. The rate of flow of water out of the flow pipe 6' increases when a portion of the opening 65 'is covered by one of the side plates 611, 613. With the damping member 600, it is thus obtained that the direction of flow of the water can be controlled. [00147] When the damping member 600 'shown in figure 30 55/58 is turned over, the same as described for damping member 600 is obtained. When the damping member 600 'is moved along the longitudinal geometric axis of the chain-creating pipe 6', a portion of the circumference strip 616 will be displaced inwardly over the opening 65 'and the rate of water flow out of the pipe 6 'current creation increases. With the damping member 600 ', it is thus obtained that the direction of flow of water and the rate of flow of water can be controlled independently of each other. The same is achieved with the alternative damping members 650 and 650 ', too. The damping members 650, 650 'are displaced in the longitudinal direction of the chain-creating pipe 6', so that the opening 655 in the plate 651 is displaced in relation to the opening 65 '. A portion of the opening 65 'is thus covered by the plate 651. The rudders 670 control the direction of flow of the water. Positioning each 670 rudder in a centralized manner over each 655 opening proved to be beneficial. This reduces the number of rudders while, at the same time, the rudder 670 is subjected to lower forces than the rudders 670 that are positioned on the side of the opening 655. [00148] In one embodiment, the pump housing 21 can be provided with a damper 24. Damper 24 is positioned between the pump outlet 20 and the inlet end 250 of the guidance channel 25, as shown in figure 33. O damper 24 is formed as a check valve with two flaps 241, 241 '. The flaps 241, 241 'are connected to a joint 243 extended diagonally through the interior of the pump housing 21. When the pump 20 moves the water upwards through the pump housing 21 into the inlet end 250 of the guidance channel 25, the flaps 241, 241 'face upwards as shown in figure 33B. When the pump 20 stops, the flaps 241, 241 will fall back to the closed position, as shown in figure 33A, so that the 56/58 water is substantially prevented from flowing from the guidance channel 25, down into the housing of the pump 21, in addition to the pump 20 and even further down into the supply channel 23. [00149] The external supply channel 23 of the inlet system 2, leading to the inlet of the pump 20 in its upper portion 230 can be provided with a filter 233 in its inlet portion 239. The filter 233 can include a filter pipe 233 of a type known to you. In one embodiment, the supply channel 23 may include an adjustable length channel 235 in a portion between the upper portion 230 and the inlet portion 239. The adjustable length channel 235 may include a channel wall in an elastic polymer material. , with a spiral in a rigid material housed in the channel wall. The rigid material may consist of a metal, such as steel. The rigid material may consist of a polymer, such as PVC. Such an adjustable-length channel 235 can be, for example, effectively 1.5 in length in its contracted state and effectively 22 m in length in its extended state. A weight (not shown) is attached to the filter pipe 233. A rope or cable (not shown) is attached to the filter pipe 233 and extends to the flotation system 11. The rope or cable can extend outside the supply channel 23. The rope or cable can extend substantially inside the supply channel 23. The supply channel 23 has the advantage that the adjustable length channel 235 provides the supply channel 23 with lateral flexibility, so that the supply channel may warp a little for water flows. The supply channel 23 still has the advantage that the effective length of the adjustable length channel 235 is easily and quickly adjustable by letting the string or cable escape into the filter pipe 233 or by pulling the string or cable. Of that 57/58 In this way, the vertical position of the filter pipe 233 is obtained to be deep enough for salmon louse larvae, for example, not to enter the fish tank 1 with the inlet water. It is also obtained that the pipe of the filter 233 can be positioned at a depth where the water temperature is favorable, so that the best possible growth is obtained for the fish in the fish tank 1. [00150] An alternative external supply channel 23 'is shown in figure 38. Supply channel 23' includes a plurality of separate supply channels 23 ”. In figure 37, four 23 ”supply channels are shown. The number of supply channels 23 ”can be three or more than four. Each supply channel 23 ”is provided with a filter pipe 233 'at its inlet portion 239', as shown in figure 38A. The upper portion 230 'of the supply channel 23' is connected in the pump housing 21 and in fluid communication with the pump 20. The supply channels 23 ”can be secured together by one or more strips (not shown) between upper portions 230 'and inlet portions 239' of supply channels 23 ”. [00151] Compared to an alternative supply channel with the same cross section as the total cross section of the supply channels 23 ', a plurality of thinner supply channels 23 ”has the advantage of allowing the water flow to the desired depth be maintained even if there is damage to one of the supply channels 23 ”or if one of the supply channels becomes clogged, for example, in the filter pipe 233 '. Thinner supply channels 23 'also have the advantage of being more flexible in the water flow, so that the effort in fixing the pump housing 21 will be less. The strain on the mounting bracket 27 of the pump housing 21 will be less as well. One modality 58/58 alternative of inlet portions 239 'of supply channels 23' is shown in figure 39B. In this embodiment, the filter pipe 233 'for each single supply channel 23 ”has been replaced by a shared filter chamber 231, in which the inlet portions 239' are attached. The filter chamber 231 is formed by pipes or ribs 232 that are side by side in a circumference and forming slits 234 between them. In the application position, pipes 232 have a substantially vertical orientation. The filter chamber 23 'is further formed by pipes or ribs 236 side by side, forming slits 238 between them and the pipes 236 form a bottom in the filter chamber 231. [00152] In figures 21, 22 and 24, 25, an alternative flotation system 11, as described in patent publication NO20111704 / WO2013085392, is shown. The entry system 2 described can be used in conjunction with various flotation systems 11 as shown and is not restricted to use in conjunction with the flotation systems 11 shown as well. For example, inlet system 2 can be used in conjunction with known flotation systems including concentric rings side by side. In figure 25, an oxygenation system 8 is shown inside the fish tank 1. The oxygenation system 8 can include channels with holes.
权利要求:
Claims (10) [1] 1. Exit basin (4) for a fish tank (1) provided with at least one exit hose (91, 99) extended from the exit basin (4) to a surface (17), characterized by the fact that the outlet basin (4) includes: - a cylinder-shaped housing (41) which is provided, in its upper portion (410), with a mounting collar (43) arranged to be attached to a lower portion (179) of the fish tank (1) and which it is provided, in its lower portion (419), with a hollow opening (413); - a cylinder-shaped outlet channel (45) which, in one portion, is housed in the housing (41), the outlet channel (45) being provided, in its upper portion (450), with a filter (453, 453 ') covering the cross section of the outlet channel (45); - an elongated annular space (46) between the housing (41) and the outlet channel (45); - an inclined grid (47) covering the entire annular space (46), the lower portion (479) of the inclined grid (47) being positioned just below the opening (413) of the housing (41), where the opening (413 ) leads into a first pipe socket (415) arranged to be connected in a sealing manner to a first outlet hose (91); - an inclined bottom plate (49) positioned in the annular space (46) below the inclined grid (47) and sealing the entire annular space (46) against the housing (41) and the outlet channel (45); and - a lower hollow opening (493) in the lower portion (499) of the lower plate (49). [2] 2. Outlet basin (4), according to claim 1, characterized by the fact that the outlet channel (45) is kept fixed in the housing (41) by means of at least one of the grid (47) and the plate bottom (49). Petition 870190079076, of 8/15/2019, p. 4/8 2/2 [3] Outlet basin (4) according to claim 1, characterized in that the grid (47) comprises a plurality of ribs (471) oriented side by side. [4] 4. Outlet bowl (4) according to claim 1, characterized in that the grid (47) comprises a sieve plate (471). [5] Outlet basin (4) according to claim 1, characterized in that the bottom plate (49) comprises a fine mesh material. [6] 6. Outlet bowl (4), according to claim 1, characterized by the fact that the lower opening (493) is positioned on the lower plate (49) in the lower portion (499) of the lower plate (49) in the coating internal housing (41). [7] 7. Outlet bowl (4), according to claim 1, characterized by the fact that the lower opening (493) is positioned in the housing lining (41) in a portion between the lower portion (479) of the grid ( 47) and the lower portion (499) of the lower plate (49). [8] 8. Outlet bowl (4) according to claim 1, characterized by the fact that the lower opening (493) leads to a second pipe socket (495) arranged to be connected in a way of sealing in a second hose output (99). [9] 9. Outlet bowl (4) according to claim 1, characterized by the fact that the filter (453) is conical in shape and the apex of the filter (453) faces upwards. [10] 10. Outlet bowl (4) according to claim 1, characterized by the fact that the filter (453 ') includes an upper plate (456) and, between the outer edge of the upper plate (456) and the edge of the outlet channel (45), a plurality of ribs (457) extend side by side so that, between the ribs (457), elongated openings are formed, forming filter slits (454 ').
类似技术:
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同族专利:
公开号 | 公开日 EA201591361A1|2016-04-29| NO337726B1|2016-06-13| CN107047415A|2017-08-18| CN105007720B|2017-03-08| BR112015018241A2|2017-07-18| EA201791731A3|2018-03-30| CA2899843A1|2014-08-14| CL2015002174A1|2016-03-04| NO337241B1|2016-02-22| CA3077142C|2021-11-09| CL2016000525A1|2016-10-07| EP2953451B1|2018-07-25| HRP20181722T1|2018-12-28| WO2014123427A1|2014-08-14| EP2953451A4|2016-09-21| NO335577B1|2015-01-05| US9883660B2|2018-02-06| DK2953451T3|2018-11-19| TR201815804T4|2018-11-21| EP2953451A1|2015-12-16| EA033041B1|2019-08-30| EA028697B1|2017-12-29| PT2953451T|2018-11-28| NO20130612A1|2014-08-06| US20190021293A1|2019-01-24| NO335577B2|2015-01-05| NO20140138A1|2014-08-06| US20150359206A1|2015-12-17| CN107047415B|2021-04-02| EA201791731A2|2017-12-29| CN105007720A|2015-10-28| CA2899843C|2020-04-28| NO20141494A1|2014-08-06| US20210392860A1|2021-12-23| CA3077142A1|2014-08-14| ES2694436T3|2018-12-20| US11134660B2|2021-10-05|
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法律状态:
2018-02-27| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]| 2019-06-18| B06T| Formal requirements before examination [chapter 6.20 patent gazette]| 2020-02-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]| 2020-03-31| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/02/2014, OBSERVADAS AS CONDICOES LEGAIS. |
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申请号 | 申请日 | 专利标题 NO20130210|2013-02-05| NO20130210|2013-02-05| NO20130612|2013-05-06| NO20130612A|NO337241B1|2013-02-05|2013-05-06|Buoyancy system for a cage| PCT/NO2014/050019|WO2014123427A1|2013-02-05|2014-02-05|Outlet basin for a fish pen| 相关专利
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