• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Dosing equipment, comprising a reservoir comprising in turn a fixed jacket and a conjugate piston capable of movement along the sleeve and connecting the piston to the outlet of the reservoir and in which the piston has an internal conduit that communicates in a sealed manner the entrance with the piston outlet. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2590335A1
    申请号:ES201530687
    申请日:2015-05-18
    公开日:2016-11-21
    发明作者:Arkaitz Zabalo Ondarra
    申请人:Goizper S Coop Ltda；
    IPC主号:
    专利说明:

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    Dosing equipment
    The present invention refers to a spray equipment capable of providing dosed volumes.
    More specifically, the present invention refers to how to industrially transform a classic retained pressure lever sprayer (such as, for example, those described in Spanish Patent Documents ES1012723U, ES2024847A6, ES1077726U), into a back equipment ( or type "backpack") capable of providing dosed volumes.
    It is customary, in the agricultural sector, to use backpack-type equipment to spray insecticides, fungicides, herbicides, even foliar fertilizers, for which it is convenient to have a device with a pressure accumulating capacity. Document ES1077726U discloses such a spray group. However, there are certain applications in which what is sought is to provide dosed volumes.
    The dosing equipment of general scope has a very different design to the backpack type equipment. In the face of the manufacturing economy, it would be convenient to have dosing equipment that shared characteristics with dosing equipment of known type. Likewise, this type of design will allow it to eventually transform existing sprayers.
    There are several models of dosing equipment on the market derived from already known spray equipment geometries. However, such models, such as the one disclosed in the Brazilian Utility Model document BRMU8500919U, referring to a costal type sprayer transformer device in liquid dispenser, are not entirely satisfactory.
    According to the studies carried out by the applicant, in order to convert a retained pressure backpack type device into a dosing backpack type equipment, it is convenient to modify three functions of a retained pressure backpack type equipment.
    First and foremost, the accumulative capacity of
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    chamber pressure of backpack type sprayers. If the pressure is involved in the dosing process, the volume that leaves the lance of the dispenser varies depending on that pressure, preventing a precise dosing. Therefore, the most effective is not to build pressure and evacuate the liquid directly as it enters the drive chamber of the backpack type sprayer. The suction in a back sprayer is done through a cylinder with a suction valve and a chamber with impulsion valve, so eliminating the accumulative capacity of the chamber, the volume that goes out by the lance will be equal to the volume sucked in the cylinder
    Consequently, since the evacuated volume is proportional to the suction path, a second change necessary for the regulation and control of the dose consists in limiting the chamber travel. Whenever the route is made from top to bottom, or through the entire race, preset dosing volumes are achieved. Thus, the present invention provides that, by varying the limit travel positions, it is achieved that the doses can be adjusted to the amount desired by the user.
    Backpack type sprayers, as they do not have a handle, require a non-drip valve at the tip of the spear to avoid leaks that discharge the backpack due to the effect of communicating vessels. The anti-drip valve prevents the suction of air from the outside through the tube, since the only possible suction is in the direction of the backpack towards the chamber.
    To eliminate the pressure accumulation capacity, currently known solutions are to remove the suction tube from a pressure chamber such as that described in the Spanish patent document ES1012723U. In backpack type sprayers, which have a retained pressure chamber, the function of the suction tube is to force the chamber liquid to be sucked from the bottom and thus prevent the air inside the chamber and that It is the one that allows to pressurize the liquid out through the outlet hose. Normally in the chambers of the pressure-retained backpacks, this suction tube is an independent tube that is inserted from the union of the chamber outlet (hose chamber union) to the bottom of the chamber. By eliminating this tube, the chamber becomes a single volume, in which the air due to its lower weight than the water tends to occupy the upper part of it and is evacuated in the first place, which allows the chamber to lose capacity air retention and is completely filled with liquid. This phenomenon is called "priming."
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    In this way, once the chamber air has been evacuated (primed), the suction becomes proportional to the chamber travel. However, there is still a very important problem of internal waste when the tank reaches the end of its volume. When the liquid in the tank comes to an end, the cylinder no longer sucks water from the tank, but instead sucks air. This air enters the chamber. Since the air weighs less than the liquid, it comes out directly, so that the liquid inside the chamber cannot be evacuated. In this type of cameras the volume usually ranges between 500 cm3 and 1500 cm3, so the volume that is not evacuated is important.
    More particularly, the present invention consists of a dispenser comprising a reservoir which in turn comprises a fixed jacket and a conjugate piston with movement capacity along the jacket and connected the piston with the outlet of the tank, and why The piston has an internal conduit that tightly communicates the inlet with the piston outlet, lacking pressure retention elements at the inlet to the piston. The invention provides that the connection lacks pressure retention elements at the piston inlet. However, the absence of non-return elements simplifies the construction.
    Preferably, this duct inside the chamber has a volume smaller than the volume of the jacket or cylinder.
    More preferably, the said tight communication between the entrance and the exit is carried out by means of a hollow shaft with its relevant joints.
    Even more preferably, said conduit is coaxial to the piston, and has the same mass as the valve nut that tightens the suction seal.
    Preferably said inner duct comprises a cylindrical part attached to the piston.
    Preferably said internal duct has the same mass as the cylindrical part.
    Preferably, it has a lever arm part with a stop, said stop being disposed in the travel of the main operating lever, thus limiting the travel of the lever and consequently of the piston.
    More preferably, the position of the stop is adjustable along the axis of the lever arm
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    for example with a groove in a sheet welded to the lever arm and in the same direction of the axis of the lever arm.
    Even more preferably, said stop is made with a screw that fits into positions made along said groove and a locking means, for example with a cylindrical nut.
    In a particularly preferred embodiment, said sheet has the aforementioned positions presenting said positions inversely to that of the screw in order to identify and fix precisely, without risk of involuntary variation, the intermediate positions.
    More preferably, the cylindrical nut has a through hole in the radial direction at the opposite end of the thread so that a screwdriver or shaft can be introduced therein and thus increase the tightening torque.
    More preferably, the sheet has a graduated scale with dose equivalents.
    For your best understanding, some drawings of an embodiment of the dosing equipment object of the present invention are attached by way of explanatory but not limiting example.
    Figure 1 shows the perspective view of a dosing device according to the present invention.
    Figure 2 shows another perspective view of the dosing equipment of Figure 1 and a dosing lance.
    Figure 3 shows a sectional view of the equipment of Figure 1, along the middle plane showing the interior components.
    Figure 4 shows an enlarged detail of Figure 3.
    Figure 5 shows an enlarged detail of the upper part of the camera of the embodiment shown in the previous figures.
    Figure 6 shows a perspective view of a cylindrical body used for
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    Transform a backpack type spray equipment design to a dosing device.
    Figures 7 and 8 show enlarged details, in perspective, of the regulation mechanism of the equipment according to the present invention shown in the previous figures.
    Figure 9 shows a perspective view in which the stop system for the travel of the lever is shown schematically.
    Figure 10 schematically shows a top plan view of the screw and plate used to fix the travel stop.
    Figure 11 shows a perspective view of the plate and the screw.
    Figure 12 shows another perspective view of the screw.
    Figure 13 shows a perspective view of the part that forms the base of the screw and that
    It comprises the projections that subsequently fit into the plate recesses.
    Figure 14 shows a sectional view of Figure 2 in which the interior elements of a non-return valve are seen.
    Figures 1 to 14 show a realization of geometry dosing equipment derived from a backpack type spray equipment comprising a tank -1- placed on the back as a backpack that has inside a chamber -22- that corresponds to the pressure chamber of the retained pressure backpack sprayers (see figure 3). The chamber -22- constitutes a piston that moves along the jacket -7- to drive the liquid out of the equipment.
    The example shown also presents a typical suction valve -8- of the pressure retained sprayers (see figure 4). Unlike the pressure retained spray equipment, it does not, however, have any impulsion valve. Therefore, the volume dosed by the dosing equipment corresponds to the volume of the chamber -22- associated with the suction path -230-, which corresponds to the butt-to-stop path of the chamber -22- (see figure 3). As shown in Figure 4, the typical impulse valve of the pressure retained spray equipment has been replaced by a cylindrical body -223- which is attached to the chamber -22- preferably by means of a thread -262-. For it,
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    It is possible to take advantage of the threading with which the impulsion valve is attached to the chamber in the pressure-retained backpack type sprayers. In addition, the cylindrical body -223- is tightly connected with the suction tube -222-. For this, the cylindrical body -223- has a diameter somewhat smaller than that of said suction tube -222-, being inserted inside it. A toric joint -252- ensures the tightness between the two. The tightness ensures the elimination of the pressurized effect of the retained pressure equipment and with it the accumulative capacity of the chamber in these equipment. The use of the aspiration tube -222- in combination with the cylindrical body -223- also dramatically reduces the volume downstream from the suction point to the nozzle, that is, the sum of volumes of the aspiration tube -222- and the inner tube of the cylindrical body -223- is smaller than that of the cylinder -224-. When this relation of volumes is fulfilled, it is ensured that the final residue is non-existent and that the entire volume of the deposit can be sucked and evacuated. In particular, thanks to this relation of volumes it is not necessary to implement additional non-return systems to the drip nozzle -301- to start the suction, that is, to achieve the priming of the pump constituted by the cylinder -224- and the piston -22 -. This simplifies the machine and makes it more robust in terms of obstructions and guarantees uniform dosing.
    A main novelty of the present invention is that using a traditional architecture of a piston sprayer, such as that set out in the Spanish patent document ES1077726U, the impulsion valve is replaced by a cylindrical body -223- preferably threaded that In addition to tightening the suction joint -233-, it connects tightly with the suction tube -222-. In this way, the pressurizing function is annulled and the volume downstream from the suction point to the nozzle is drastically reduced (suction tube volume -222- + cylindrical body volume -223- <cylinder volume -224-). With this reduction of the chamber volume the final residue is non-existent, since the entire volume of the tank can be sucked and evacuated.
    Reducing the chamber volume by making a direct exit (cylindrical body -223- + aspiration tube -222-) also facilitates the priming of the chamber. As the pumping volume (cylinder volume -224-) of a sprayer is normally less than 150 cm3 (preferably between 25 and 100 cm3), if the chamber volume is greater than the suction capacity (cylinder volume -224- ), this does not exert enough ford to suck the liquid from the tank, so both a non-return closure in the chamber (impulsion valve) are necessary to guarantee suction and priming. In this case, the chamber volume -223 - + - 222- is reduced below the suction volume -224-. Therefore, no
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    It is necessary to implement additional non-return systems to the drip nozzle to start suction (priming). This simplifies the machine and makes it more robust in terms of obstructions and guarantees uniform dosing. Alternatively, anti-return systems can also be provided.
    As for the limitation of the camera travel -230-, in the market there are different alternatives that range from directly limiting the camera travel to limiting the travel of the lever, but the realization shown in Figures 9 to 13 presents the advantage of not compromising the tightness of the deposit.
    The main advantage of this alternative is that the lever stops are made between the parts of the lever and not between the lever and the tank, so that the stops are very robust and the tank does not have to be drilled.
    Figures 7 and 8 show a possible solution to limit camera travel -230-. An upper stop -225- is provided to the travel of the lever in the lever arm part -226- so that this stop -225- meets the main operating lever -227- in its travel, thus limiting the travel of the lever arm -226- and consequently the travel of the chamber / piston -230-. The lower stop is made between a rib -231- in the upper part of the chamber and the glutton nut -232- (see figure 5).
    The position of the upper stop -225- is adjustable along a groove in a sheet -228- welded to the lever arm -226- and in the same direction as the axis of the lever arm. This stop, for example, is made with a screw (type DIN603) -229- with a shape that fits in inverse positions made along this groove and is locked with a -225- cylindrical nut. The sheet -228- has recesses inversely to that of the projections of the screw head -229- in order to identify and fix precisely without risk of involuntary variation the preset positions. The sheet -228- has an engraved scale -500- in which the positions with their respective doses can be identified.
    Figures 9 to 13 show another possible embodiment of the stop -225-, which is slightly different from the embodiment shown in the previous figures. Specifically, the design of the butt head -225- is different, being improved for a better and safer system behavior. The same or similar elements to the previous embodiments have been designated with numeral identities and will not be explained again in detail.
    In the embodiment of figures 9 to 13 the stop -225- is formed by a main body -2259- which has an internal thread -2252- in which a screw -2255- is threaded. The screw -2259- has an elongated head -2254-. The elongated head has dimensions such that it is capable of traversing the slot -2281- of the sheet -228- only in a radial position, so that the stop -225- can only be removed from the sheet -228- in
    said radial position. The main body -2259- has two projections in the form of battlements -2256- whose shape is conjugated with that of the slot recesses -2281-. In addition, the battlements -2256- are angularly offset with respect to the elongated head -2254-.
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    In this way, the accidental exit of the stop -225- is prevented when it rests in one of the positions defined in the sheet -228-. The battlements -2256- can have two heights, in order to further reduce the movements of the stop -225-. As a whole, the stop -225- ends with a knurled area -2251- to favor the activation of the stop.
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    The unloading is carried out with a lance without handle and with a non-return or anti-drip valve like the one shown in figure 2. Figure 14 shows the inside of a non-return valve -301- comprising a ball -302- shutter and a spring -303- that drives said ball -302-.
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    While the invention has been described with respect to examples of preferred embodiments, these should not be considered as limiting the invention, which will be defined by the broader interpretation of the following claims.
    权利要求:
    Claims (11)
    [1]
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    1. Dosing equipment, characterized in that it comprises a tank which in turn comprises a fixed sleeve and a conjugate piston with movement capacity along the sleeve and connecting the piston with the outlet of the tank and because the piston has an internal duct which communicates the inlet tightly with the piston outlet.
    [2]
    2. Equipment, according to claim 1, characterized in that said internal duct has a volume smaller than the volume of the jacket.
    [3]
    3. Equipment, according to claim 1 or 2, characterized in that said internal duct that tightly communicates the inlet with the piston outlet comprises a hollow shaft located inside the piston.
    [4]
    4. Equipment, according to claim 3, characterized in that said hollow shaft is coaxial to the piston.
    [5]
    5. Equipment according to any one of claims 1 to 4, characterized in that said internal duct comprises a cylindrical part attached to the piston.
    [6]
    6. Equipment according to any one of claims 1 to 5, characterized in that said internal duct has the same mass as the cylindrical part.
    [7]
    7. Equipment, according to any of the preceding claims, characterized in that it has a lever arm part with a stop, said stop being disposed in the path of a main operating lever thus limiting the travel of the lever and consequently the travel of said piston.
    [8]
    8. Equipment, according to claim 7, characterized in that the position of the stop is adjustable along the axis of the lever arm with a groove in a plate welded to the lever arm and in the same direction as the axis of the lever arm.
    [9]
    9. Equipment, according to claim 8, characterized in that said stop is made with a screw that fits in positions made along said groove and a locking means, for example with a cylindrical nut.
    [10]
    10. Equipment, according to claim 9, characterized in that said positions are inverse inverse to that of the projections of the screw in order to accurately identify and fix intermediate positions without risk of involuntary variation.
    Equipment according to any one of claims 9 to 10, characterized in that the means
    The locking hole has a through hole in the radial direction at the opposite end of the thread so that a screwdriver or shaft can be inserted into it and in this way increase the tightening torque.
    10 12. Equipment according to any of claims 8 to 11, characterized in that the sheet
    It has a graduated scale with dose equivalences.
    [13]
    13. Equipment according to any of claims 9 to 12, characterized in that the groove of the sheet has an area of wide width for introducing said screw.
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    同族专利:
    公开号 | 公开日
    WO2016185059A1|2016-11-24|
    ES2590335B1|2017-06-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4826050A|1984-11-28|1989-05-02|Murphy Allan P|Spraying and dosing apparatus|
    ES1012723U|1989-12-13|1990-09-16|Goizper, S.Coop. Ltda.|Spray pesticides, refined products. |
    FR2662954A1|1990-06-08|1991-12-13|Coop Goizper S|Improvements to retained-pressure lever-operated sprayers|
    WO1997002899A1|1995-07-07|1997-01-30|Gilmour, Inc.|Backpack sprayer|
    ES1077726U|2012-09-07|2012-09-25|Goizper, S.Coop.|Pressure lever sprayer retained |WO2019014734A1|2017-07-20|2019-01-24|Guarany Indústria E Comércio Ltda.|Liquid dosing device, which can be attached to hand sprayers with a piston pump system|US1495771A|1924-01-19|1924-05-27|Pacific R & H Chemical Corp|Measuring and spraying apparatus for a volatile fumigant|
    DE1244461B|1962-05-18|1967-07-13|Holder Geb|Portable syringe|
    IT1252216B|1991-12-16|1995-06-05|Sar Spa|DISPENSER OF LIQUID SUBSTANCES OR CREAM OR PASTA SUBFORMATION|
    US5381932A|1992-04-14|1995-01-17|American Wyott Corporation|Condiment pump|
    DE29521613U1|1995-03-31|1997-11-13|Bayer Ag|Device for applying plant protection products|
    US6953133B2|2002-04-02|2005-10-11|Hayes Products, Inc.|Pump assembly with continuous tube|
    WO2007040133A1|2005-10-03|2007-04-12|Mika Watanabe|Manual pump and liquid container with manual pump|
    EP2482797B1|2009-09-29|2018-09-12|Glaxo Group Limited|Improvements to pressurised metered dose inhalers|
    法律状态:
    2017-06-27| FG2A| Definitive protection|Ref document number: 2590335 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170627 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201530687A|ES2590335B1|2015-05-18|2015-05-18|Dosing equipment|ES201530687A| ES2590335B1|2015-05-18|2015-05-18|Dosing equipment|
    PCT/ES2016/070266| WO2016185059A1|2015-05-18|2016-04-15|Metering equipment|
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