• 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:
    The invention relates to a filter device comprising an inlet space, an outlet space, a filter system which separates inlet space and outlet space, characterized in that the inlet space comprises at least one liquid supply and at least one liquid discharge and the discharge space comprises no liquid supply and at least one liquid discharge. The invention also relates to a related filter method.
    公开号:AT516379A4
    申请号:T50127/2015
    申请日:2015-02-19
    公开日:2016-05-15
    发明作者:Friedrich Dipl Ing Dr Kastner
    申请人:Next Generation Analytics Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a filter device and a filter method for filtering viscose liquids, in particular liquid plastics.
    For removing impurities, such as e.g. Metals, sands, dusts or gel particles from viscous liquids, e.g. Plastics in liquid form, filters are usually used, which with the term "filter" within the meaning of the invention, sieves are included.
    In the previously known methods, the liquids are pressed through a filter. To clean the filter they are often replaced. Alternatively, filters are also cleaned by means of a pusher, the pusher being passed over the filter surface, thereby pushing contaminants to the edge, which would otherwise clog the filter.
    Disadvantage of the devices and methods used so far is that in the rule a large part of the contaminants are pressed with the viscous liquid directly or through the filter through the filter. In particular, gel particles are comminuted by the pusher and then the parts are forced through the filter.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide a filter device and a filter method by means of which a user is able to carry out an improved and simplified filtering of viscous liquids.
    This object is achieved by a filtering device and a filtering method according to the claims.
    The filter device according to the invention comprises an inlet space, an outlet space, a filter system which separates inlet space and outlet space, characterized in that the inlet space comprises at least one liquid supply and at least one liquid outlet and the outlet space comprises no liquid supply and at least one liquid discharge.
    According to a particular embodiment, the filter is arranged so that the direction of flow of the liquid relative to the surface normal of the filter at an angle between 10 ° and 90 °, in particular between 30 ° and 70 °, runs. The filter is thus preferably obliquely to the inflowing liquid.
    The filtering method according to the invention for filtering viscous liquids comprises the steps of: - flowing the viscous liquid to a filter system, wherein the pressure P (F) exerted on the surface of the filter by the flow of the liquid is less than the pressure of the flow of this liquid on one Area orthogonal to the flow direction of the liquid P (S), and in particular P (F) / P (S) < 90%, particularly preferably P (F) / P (S) < 70%, applies. -Abführen the leaked through the filter system liquid. - Ab- or returning the not passed through the filter system Flüs¬sigkeit.
    Of course, P (F) also takes into account the pressure of the liquid passing through the filter system, since the phrase "area of the filter" does not encompass the filter area (excluding holes) but the entire area where the filter system is located, including the openings of the filter system. Also suitable here would be the designation "the closed surface element covering the filter system".
    The inlet space is initially only a space through which the incoming liquid flows. Similarly, an outlet space is merely a space through which leaking liquid flows. Depending on the application, these two spaces may be specially designed, but in a simple application they may correspond only to a section of a pipe. The term "inlet area" is also used below. This is the area of the inlet space in which the incoming
    Liquid arrives and comes into contact with the filter.
    It is only necessary for the invention that the inlet space and outlet space are separated by the filter system, so that liquid can only pass from the inlet space into the outlet space through the filter system.
    The liquid supply initially comprises any device which can supply liquid into the inlet space. Although it may be particularly designed for preferred embodiments, in a simple case it may be formed by the area of a tube which passes over an inlet area.
    The liquid drain initially comprises any device which drains liquid from either room. Of course, the flow through the filter, which is not considered to be a liquid drain in this sense, is excluded. Although it may be specially designed for preferred embodiments, in a simple case it may be formed by the area of a pipe emerging from an inlet or outlet area.
    Preferably, there is no direct contact between a liquid drain of the inlet region and a liquid drain of the outlet region to prevent contamination of the filtered liquid. However, depending on the embodiment, it may still be preferred if there is contact between a liquid outflow of the inlet region and a liquid outflow of the outlet region, e.g. by a further filter or other Reinigungsvorrichtun¬gen.
    The liquid outflow of the inlet region is the reason for the difference in pressure in the above-described method according to the invention. The liquid does not press on the filter with the entire pressure but a part of the liquid moves out through the liquid outflow of the inlet region and does not pass through the filter. In a preferred embodiment, the filter is skewed relative to the fluid flow so that as much of the fluid as possible comes into contact with the filter and there is the possibility that this portion (or a portion thereof) may pass through the filter.
    Contaminants are entrained by the liquid flowing past the filter and do not pass through the filter, which is also achieved by the pressure difference. Not only a flow through the filter system, but also a flow along the filter system.
    In this way, part of the liquid together with the contaminants can escape from the inlet area through the liquid outlet of the inlet area without having to pass through the filter.
    The inlet of the liquid to the inlet region can take place at a predetermined position or else by means of a feed distributor. It is also preferred for some embodiments that the liquid feed is designed so that it is movable, in particular rotatable, relative to the filter, the remainder of the device and / or the liquid outflows.
    Basically all media can be used as the filter, which consist of a base material which is provided with openings.
    Preferred filters include apertured plates, fiber composites (knitted, embroidered, woven staple fiber webs, needled, calendered, or screens (eg, screens).) The apertures may be laser cut, stamped, drilled, or etched needled and / or calendered, sintered from solid materials or prepared by means of pressing of fibers.
    Furthermore, preferred filters contain particles which are suitable for filtering the respective viscous liquid, in particular particles of the group of metallic and / or ceramic particles, sands, salts and plastic particles.
    According to a preferred embodiment, the particles are surface-modified so that they have a surface which has been enlarged by treatment or provided with additional substances. In particular, the surface of the particles is hydrophobic or hydrophilic.
    According to a preferred embodiment, which can also represent an independent invention without the above-mentioned filter device, and offers improved cleaning action and improved protection against undesired particle passage compared with the prior art, the filter is formed by means of a plate, are introduced into the holes (screen plate), wherein the front sides of the holes are inclined relative to the longitudinal axis of the filter and / or the walls of the holes are inclined relative to the orthogonal of the longitudinal axis of the filter. In particular, this inclination is greater than 10 °, preferably greater than 30 °, preferably greater than 60 ° in some applications, and may also be 90 ° or greater in the case of the end faces.
    According to a preferred embodiment, the orientation of the filter relative to the predetermined direction of flow of the liquid is such that the liquid does not strike the filter orthogonally, but the filter is arranged so that the direction of flow of the liquid relative to the surface normal of the filter is at an angle between 30 ° and 90 ° ,
    In cooperation with the above-described embodiment, the holes are aligned relative to the liquid flow so that the surface normal of the inclined end faces and / or the axes of the sidewalls are inclined in the flow direction of the liquid flow, that is, pointing away from the inflow position.
    The holes in the filter are preferably arranged in such a way that the shape of a grater results.
    This further improves the effect described above. The second direction of flow of the liquid along the filter in the direction of the liquid outflow of the inlet region entrains impurities and, due to the particular arrangement of the holes on their way, can no longer move through the filter. Also, sticking of particles or mirrors is prevented by the particular shape or arrangement of the holes.
    According to a preferred embodiment, the filters have a curved shape and in particular are arranged parallel to one another, such as, for example, two parallel cylinder jackets. A concentric arrangement is preferred.
    Likewise preferred is a conical shape of filters, which in particular are also arranged parallel to one another, such as e.g. on two parallel conical shells.
    According to a preferred embodiment, at least three filters are arranged around a central filter, in particular on a rotatable surface. The arrangement is preferably radial, wherein the filters are not oriented parallel to the rays but tilted in the same direction of rotation in each case, so that the image of a vortex is formed from above.
    According to a preferred embodiment, the bottom of the inlet space comprises the filter system or this bottom is at least partially formed by the filter system. This has the advantage that the incoming liquid alone is forced by its gravity through the filter system as it flows through the inlet space to the liquid drain of the inlet space.
    The liquid supply is preferably mounted centrally above the filter system or on the side of the inlet space and takes place in particular parallel to the surface normal of the filter system (inflow from above onto the filter system) or orthogonal to the surface normal of the filter system (inflow laterally to the filter system).
    In order to allow a longer residence time of the liquid above the filter system at a given flow rate of the liquid and compact design of the device, according to a preferred embodiment, flow elements are mounted above the filter system, which regulate the flow of the liquid so that it does not open direct route to the fluid outlet of the
    Inlet room flows. Preferred flow elements have a helical or serpentine shape.
    According to a preferred embodiment, which allows a particularly compact design, the flow elements are arranged in the form of at least one Wen-dels. From the liquid feed, which is preferably located centrally above the filter system, the liquid flows into the inlet region and is forced over the filter system in a spiral flow direction, particularly from outside to inside or from inside to outside, in particular over 90% of the way from the liquid inlet to the liquid drainage of the inlet space, flows over the filter system. At the end of its travel, i.e., preferably in the center or at the edge of the reversible ice, at least one liquid outlet is arranged to discharge the remaining liquid in which debris has accumulated, out of the inlet space.
    According to a preferred embodiment, which allows a particularly compact tube-like design, the flow elements are arranged in the form of at least one serpentine. Of the liquid supply, which is preferably arranged on an edge of the (in particular elongated) filter system, the liquid flows into the inlet region and is guided over the filter system inalternierender flow direction, in each case orthogonal to the resulting flow direction or the orientation of the tube, which Inlet space forms (eg alternately to the right and left). At the end of its path, that is to say preferably at the end of the tube, at least one liquid outlet is arranged in order to discharge the remaining liquid, in which dirt particles have accumulated, from the inlet space.
    According to a preferred embodiment, the flow elements are designed so that they do not conduct the entire liquid, but also a flow can take place below or above them. In this way, the static pressure of the liquid on the filter is further reduced.
    According to a preferred embodiment, which allows a very simple and yet effective embodiment of the invention, a filter system is derma¬ Shen arranged in a tube that, relative to the flow direction of the liquid, behind the filter system, the tube is divided into two liquid outlets or a liquid outlet branches off in front of the pipe and a liquid outlet continues in the pipe, one of these liquid outlets being connected directly to the inlet region and another being reached only after passing through the filter system (and this then being the outlet region and liquid outlet of the outlet region).
    It is particularly preferred that the filter system be arranged obliquely in the tube, so that it is inclined to the cross-sectional area (or orthogonal to the flow direction) in particular at an angle between 10 ° and 90 °, in particular between 30 ° and 70 °.
    According to a further preferred embodiment, a filter system is in the form of a spiral and the device is shaped so that the liquid passing through flows on a wall of this spiral up to a liquid outflow and the liquid which has passed through the filter system flows off through another liquid outflow. In this way, in comparison with the foregoing embodiment, the filter area can be increased in a small overall space.
    According to a preferred embodiment, the filters are moved relative to the liquid, or the filter device comprises a movement system which is designed to move filters.
    According to a preferred embodiment, this movement system comprises a conveyor system designed to move the filter, which in this case in particular has the shape of a band or a plurality of filter elements, in one direction, so that parts of the filter already in use (resp. Filter elements) are removed from the liquid flow and not verwen¬dete parts of the filter (or filter elements) are moved into the liquid flow.
    According to a preferred embodiment which can be combined, in particular, with the above-mentioned conveyor system, the motion system comprises a vibration system which is designed to have at least one filter with a frequency of > 1 Hz back and forth. This serves for the short-term, local reduction of the viscosity of the liquid. Depending on the type of liquid and the viscosity, it is advantageous that the vibration with a frequency > 50Hz or even > 200 Hz. In particular, 100 kHz makes sense as the upper limit of the frequency, since parasitic effects increasingly occur starting at a certain frequency.
    It is also preferred that this vibratory movement of one filter takes place relative to another filter. In this way it is possible to shred gel particles which have penetrated into the filter passages.
    The vibrations with respect to the filter preferably take place transversely (orthogonal normal surface normals) and / or normal (parallel to the surface normal).
    According to a preferred embodiment, this movement system comprises a rotation system (in particular in combination with the preceding embodiments), which is designed to rotate at least two filters relative to each other. This has the advantage that on the one hand, the viscosity of the umge¬benden liquid can be reduced and also gel particles which have penetrated into the filter passages, can be crushed.
    According to a preferred embodiment, the filter device comprises a tempering system, which is designed to heat at least one filter, in particular a filter, which is in direct contact with the inflowing liquid. As a result of the heating, the viscosity of the liquid can be lowered shortly and a simple passage through the filter can take place. The temperature is preferably chosen so that the intrinsic viscosity of impurities which are heated to this temperature (e.g., of gel-like impurities) is not or at least not reduced to the same extent as the viscosity of the liquid.
    According to a preferred embodiment, the viscous liquid is mixed with additives which reduce or increase the viscosity. Preference is given here to adding monomers, especially in the case where the viscous liquid is a plastic, in which case the monomers are preferably of the type that is also present in the polymer chains of the plastic. The monomers may be of identical chemical structure, in some embodiments it may also be advantageous to use monomers having different chemical structures (but especially only insofar as these monomers are also present in the polymer chains of the plastic Addition of monomers has the advantage that the viscosity is lowered, but these need not necessarily be removed after the filtering process, but can simply be combined with the polymers.
    To clean the filter, the liquid itself can be used. The force acting on impurities depends on the viscosity of the liquid and the flow rate. However, physical access to this matter is complicated, and a quantitative definition of the ratio of flow rate and viscosity would be beyond the scope of this invention. However, by measuring the pressure between inlet system and outlet system and / or by visual inspection, it is possible for one skilled in the art to check the condition of the filter for contamination or clogging with contaminants. Viscosity and / or flow rate are then adjusted so that these impurities are entrained with the liquid, which is not through the Filtergedrungen.
    In some cases, since the viscosity of the liquid should not be changed in some applications, it is advantageous to control the flow rate alone in these cases.
    The advantage of this embodiment is that no additional Reinigungs¬elemente must be used and replacement of the filter can be pushed out or even unnecessary. Due to the cross flow and the special special design of the filter plates, the filter is constantly cleaned
    The part of the liquid which emerges through the liquid outflow of the inlet space carries an increased concentration of the contamination in comparison with the inflowing liquid. First, because part of the liquid has penetrated through the filter, and the dirt particles are not, and second, because the liquid has taken dirt particles from the filter.
    According to a preferred embodiment, this liquid fraction is separated or filtered by a further filter. This further filtering step can be carried out by a further device according to the invention and / or a quality filter of very high quality. With a very high quality filter, it could also be possible in some applications to use a conventional filtering device. It would also be possible to return the liquid stream. Mate¬rial can be recovered by means of the re-filtering of the liquid flow.
    As described above, a splitting of the initial liquid stream takes place. The one part flows through the filter system and contains approximately no impurities (hereinafter also referred to as "filtrate"), the other part (hereinafter referred to as "residual liquid") flows through the Flüs¬sigkeitsabfluss the inlet space and contains the impurities, which are now in comparatively high concentration in the residual liquid.
    According to a preferred embodiment, which also permits a pressure filter test when using the present invention, the device comprises a sensor system which is designed to perform a pressure filter test on at least a part of the residual liquid and additionally the flow (volume / time) of the initial Determine fluid. In addition, the device is additionally designed to determine the extent to which an increase in concentration of contaminants in the residual fluid has occurred as compared to the initial fluid.
    The determination of the increase in concentration can be determined in the simplest embodiment in that a pressure filter test was previously carried out on the initial fluid and the result of this measurement together with the
    Assuming that this value applies to the entire initial liquid, together with a measurement of a representative portion of the residual liquid will be used as a constant for the normal increase in concentration. If the proportion of impurities exceeds the measurement of the o.g. re¬presentativen part, can be concluded that a correspondingly higher proportion of contamination in the initial fluid.
    According to another embodiment, the sensor system is additionally designed to determine the pressure acting on the filter system. Thus, an increasing contamination of the filter can be determined.
    According to a preferred embodiment, the sensor system is additionally designed to determine the flow of the residual liquid and / or the flow of the filtrate. In this way, together with the flow measurement of the initial liquid for a given volume element of the liquid, it is determined which part is filtrate and which part is residual liquid. After the pressure filter test on the relevant volume element of the residual liquid, it is possible to precisely calculate the proportion of impurities in the initial liquid.
    According to a preferred embodiment, for the pressure filter test on a volume of the residual liquid, at least this volume is decoupled with respect to the static pressure from the liquid outflow of the inlet space. This has the advantage that a pressure measurement in the context of the pressure filter test is not distorted by the pressure of the remaining fluid and, moreover, that no pressure increase takes place on the filter system through the pressure filter test. Such decoupling may be accomplished by removing the respective volume of residual liquid or by installing a liquid pump behind the liquid drain of the inlet space.
    In particular, with this embodiment, a pressure filter test in the current Be¬trieb is possible, in conjunction with the preceding embodiments, even to the degree of contamination of the initial fluid can be concluded. So it is an online monitoring of the incoming liquid possible.
    The device is basically also suitable for liquids with low viscosity (<5 mPa s), but its advantage is particularly evident in liquid conducting with viscosities &gt; 5 mPa s in particular &gt; 100 mPa-s. The upper limit for the viscosity is in this case where it is no longer possible to speak of a flow in the conventional sense, in particular the viscosity is below 1,000,000,000,000 mPas.
    Examples of preferred embodiments of the filter device according to the invention are shown in the figures.
    Fig. 1 shows schematically a preferred embodiment;
    Fig. 2 shows schematically a further preferred embodiment;
    Fig. 3 shows schematically a third preferred embodiment;
    Fig. 4 shows schematically a preferred filter in helical form from above;
    Fig. 5 shows schematically the filter in helical form in side view;
    Fig. 6 shows schematically a preferred filter;
    Fig. 7 shows schematically another preferred filter.
    FIG. 1 shows a preferred embodiment which permits a very simple and yet effective embodiment of the invention. In a pipe, a filter system 4 is arranged such that it covers an outlet region 2 separated in the pipe. The pipe area in front of the filter system can be regarded as inlet area 1 and another area of the pipe separated behind the filter system which is not closed by the filter is the liquid drainage 3 assigned to the inlet area. The filter system 4 is arranged obliquely in the pipe and comprises an overhead screen and egg ne underlying sieve support plate.
    Figure 2 shows another preferred embodiment in which the filter system 4 is in the form of a spiral. In the illustrated case, the outlet region 2 is located on one side of the filter system and the inlet region 1 is on the other side. Left and right of the center there are two Flüssigkeitsabflüsse.Links is the inlet area associated with liquid drainage 3 to the right and a part of the outlet region 2 associated Flüssigkeitsabfluss.Smömt now liquid through the right-hand pipe, which forms the Flüs¬sigkeitszuführung, in the inlet space. 1 The liquid will flow along the filter system 4 and drain towards the center in the form of a spiral. Meanwhile, by gravity, liquid passes through the filters and flows through the outlet region at the end of which it can flow off through the respective liquid drain.
    FIGS. 3 and 4 show a further preferred embodiment of a device according to the invention, FIG. 3 showing the device in plan view and FIG. 4 showing the device from the side as a section through the horizontal, central axis of FIG.
    The liquid to be filtered flows in through a centrally arranged inlet area and moves radially outwards in the dashed area (see FIG. 3), while a part of it already moves through the filter arranged below the inlet area and the complete spiral shape in FIG 4 (see Figure 4) already reached the outlet. A helical shape (dotted area in Figure 3) causes the liquid to spiral, with radial outward propagation still possible, but as the radius blade increases (see the wedge-shaped gap below the spiral spaces in Figure 4) it is no longer possible , Through channels, that part of the liquid, which has not penetrated through the filter 4, is led to the liquid outlet 3.
    Figure 5 shows a further preferred embodiment in which the filter system 4 is in the form of a vortex or reversible ice. In the illustrated case, the outlet area is under the filters and is not visible. In the case illustrated, the filters do not extend as far as the upper edge of the space which forms the inlet area 1 but extend at its bottom. In the middle there is the liquid drain 3 associated with the inlet area. Now liquid is flowing
    Hi ιιτΉ Hoc rö ^ htc nhon ainna7oirhnotc pipe ui / olr'hoc Hio FlnccinkoitcTi iführi inn forms, in the inlet chamber 1, the liquid will flow through the filter of the filter system 4 and flow towards the center in the form of a vortex. Meanwhile, it is guided by the shape of the filter system and a part of the liquid passes through the filter system 4 at the same time and flows off filtered.
    Figures 6 and 7 show two advantageous filters. The arrow attached above the figures should indicate the direction of flow of the liquid. Above the filter is the inlet area, below the filter is the outlet area.
    In Figure 6, the filter has oblique holes which are inclined against the liquid flow. The liquid is thus not forced by the subsequent liquid through the holes but must perform on its way through the filter a change in direction of more than 90 ° with respect to its flow direction.
    In Figure 7, the filter has the shape of a sawtooth, wherein the holes are each arranged on the flanks facing away from the liquid flow. Again, the liquid flowing through the filter on its way through the filter must perform a change in direction of more than 90 ° with respect to its flow direction.
    Both filter shapes are used in particular to prevent gel-like contaminants from being forced through the filter and, even if they should reach one of the holes, be taken back by the liquid flowing past them.
    权利要求:
    Claims (14)
    [1]
    Claims 1. Filter apparatus comprising an inlet space, an outlet space, a filter system separating inlet space and outlet space, characterized in that the inlet space comprises at least one liquid feed and at least one liquid drain and the outlet space comprises no liquid feed and at least one liquid drain.
    [2]
    2. Filter device according to claim 1, characterized in that the filter is arranged such that the direction of flow of the liquid relative to the surface normal of the filter at an angle between 10 ° and 90 °, in particular between 30 ° and 70 °, runs.
    [3]
    3. Filter device according to one of the preceding claims, characterized in that the inlet of the liquid to the inlet region takes place by means of a feed distributor, wherein the liquid feed is preferably designed such that it is movable relative to the filter, the rest of the device and / or the liquid effluents, in particular rotatable, is arranged.
    [4]
    Filter device according to one of the preceding claims, characterized in that the filter system comprises filters of the group of apertured plates, fiber composites (knitted, embroidered, woven), staple fiber nonwovens (needled, calendered) and lattices, the apertures being in particular lasered, punched, are drilled or etched and / or the filters are preferably woven, knitted, calendered, needled and / or calendered, sintered or made by compression of fibers, or wherein the filters in particular contain particles which are suitable for filtering the respective viscous liquid, in particular particles the group of metallic and / or ceramic particles, sands, salts and plastic particles, wherein the particles are preferably surface-modified so that they have a surface which has been enlarged by treatment or provided with additional substances.
    [5]
    5. Filter device according to one of the preceding claims, characterized in that the filter system comprises filters which are formed by means of a plate, are introduced into the holes, wherein the end faces of the holes are relatively inclined relative to the longitudinal axis of the filter and / or the walls of the holes relative are inclined to the orthogonal of the longitudinal axis of the filter, this inclination is in particular greater than 10 °, preferably greater than 30 °.
    [6]
    6. Filter device according to one of the preceding claims, characterized in that a filter system with at least three filters are arranged around a zent¬ralen filter, or that a filter system is arranged in a tube so that, relative to the flow direction of the liquid, behind the filter system, the tube in two liquid drains is subdivided or one liquid drain branched off before the pipe and one further extends in the pipe, wherein one of these liquid drains is connected directly to the inlet region and each other only after passing through the filter system is reached, or that the filter system has the shape of a spiral and the Device is formed in such a way that the liquid flowing through flows on a wall of this spiral up to a liquid drain and flows through the filter system hindurchgegange¬ne liquid through another liquid drain.
    [7]
    7. Filter device according to one of the preceding claims, characterized in that the bottom of the inlet space comprises the filter system or at least partially formed by the filter system, the Flüssigkeits¬ feed is preferably mounted centrally above the filter system or on the side of the inlet space, and wherein Preferably, flow elements are attached above the filter system, which regulate the flow of the liquid, so that it does not flow directly to the liquid outlet of the inlet space, in particular flow elements which have a spiral or serpentine shape.
    [8]
    8. Filter device according to one of the preceding claims, characterized in that the filter device comprises a movement system, which is adapted to move filters of the filter system, said Be¬ movement system in particular comprises a conveyor system which is adapted to the filter in one direction such that parts of the filter already in use are removed from the liquid stream and unused portions of the filter are moved into the liquid stream, and / or wherein the motion system comprises a vibratory system designed to provide at least one filter having a frequency of &gt; 1 Hz back and forth and / or that the movement system comprises a rotation system which is adapted to rotate at least two filters relative to each other.
    [9]
    Filter device according to one of the preceding claims, characterized in that the filter device comprises a temperature control system designed to heat at least one filter, the temperature preferably being chosen so as not to reduce the intrinsic viscosity of impurities heated to that temperature is at least not reduced to the same extent as the viscosity of the liquid.
    [10]
    10. Filtering device according to one of the preceding claims, characterized in that the device comprises a sensor system which is adapted to perform a pressure filter test on at least a portion of the residual fluid and additionally to determine the flow of the initial fluid, the device being preferably designed in addition to determine to what extent an increase in concentration of impurities in the residual liquid has taken place compared with the initial liquid, and wherein the sensor system is designed in particular additionally to determine the pressure acting on the filter system and / or the sensor system is additionally designed to To determine the flow of residual liquid and / or the flow of the filtrate.
    [11]
    A filtering method for filtering viscous liquids, comprising the steps of: - flowing the viscous liquid to a filtering system, wherein the pressure P (F) exerted by the flow of the liquid on the surface of the filter is less than the pressure of the flow of that liquid orthogonally on a face the flow direction of the liquid P (S), -Abführen the liquid passed through the filter system, - removing or returning the not passed through the filter system Flüs¬sigkeit.
    [12]
    A filtering method according to claim 11, characterized in that the viscous liquid is mixed with additives which reduce or increase the viscosity, with the addition of monomers being preferred.
    [13]
    13. Filter method according to claim 11 or 12, characterized in that for cleaning the filter, the liquid itself is used, in particular the pressure between inlet system and outlet system is measured and / or a visual check of the degree of contamination of the filter system is performed and viscosity and / or The flow rate of the liquid is then adjusted so that these impurities are entrained with the liquid which has not penetrated through the filter.
    [14]
    Filtering method according to any one of claims 11 to 13, characterized in that the part of the liquid which exits through the liquid outlet of the inlet space is filtered out or filtered by another filter.
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    同族专利:
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    引用文献:
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    DE102012100641A1|2011-07-29|2013-01-31|Kreyenborg Verwaltungen Und Beteiligungen Gmbh & Co. Kg|Filter apparatus for large surface filtration of e.g. polyamide, has filter insert pushed into opening by displacement of support element, and closure element inserted into housing bore or at opening of bore when lowering support element|
    WO2016131071A2|2015-02-19|2016-08-25|Next Generation Analytics Gmbh|Filter device and filter method|
    EP3308940A1|2016-10-17|2018-04-18|Next Generation Analytics GmbH|Filtering system for viscose or highly viscose liquids, in particular molten plastic and method for filtering viscose or highly-viscose liquids|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50127/2015A|AT516379B1|2015-02-19|2015-02-19|Filter device and method|ATA50127/2015A| AT516379B1|2015-02-19|2015-02-19|Filter device and method|
    PCT/AT2016/050029| WO2016131071A2|2015-02-19|2016-02-16|Filter device and filter method|
    US15/551,655| US10807295B2|2015-02-19|2016-02-16|Filter device and filter method|
    PCT/AT2016/050030| WO2016131072A2|2015-02-19|2016-02-16|Band filter|
    EP16709682.5A| EP3259109A2|2015-02-19|2016-02-16|Filter device and filter method|
    DE102016202489.2A| DE102016202489A1|2015-02-19|2016-02-18|filter means|
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