CN219003352U - Filtering device - Google Patents

Abstract

The application provides a filter device comprising a housing having a receiving cavity; the shell is provided with an inlet and an outlet which are communicated with the accommodating cavity, so that fluid flows in from the inlet and flows out from the outlet; the filter part is arranged in the accommodating cavity and comprises a plurality of magnets; wherein the length direction of the magnet is intersected with the flow direction of the fluid in the accommodating cavity. According to the utility model, the plurality of magnets are arranged in the shell to form the filter device, so that on one hand, the plurality of magnets have the function of attracting magnetic materials in slurry, and on the other hand, the length directions of the plurality of magnets are crossed with the flow direction of fluid in the accommodating cavity, so that the plurality of magnets have the function of a filter component, the structure of the filter device is simplified, and the filter effect of the filter device is improved.

Description

Filtering device

Technical Field

The utility model relates to the technical field of batteries, in particular to a filtering device.

Background

This section provides only background information related to the present application and is not necessarily prior art.

Secondary batteries currently on the market are receiving a great deal of attention for their advantages of ultra-long life, safe use, large capacity, and the like. Taking a lithium ion secondary battery as an example, the quality of an active material layer coated on an electrode plate directly influences the quality and stability of electrochemical performance of the lithium ion secondary battery. Therefore, in order to secure electrochemical performance of the lithium ion secondary battery, it is necessary to pay attention to the process level of coating the active material layer on the electrode tab during the production process of the lithium ion secondary battery.

Disclosure of Invention

The technical problem to be solved mainly by the application is that the magnetic particles in the cathode slurry and/or the anode slurry need to be effectively filtered before being coated.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: a filtration device comprising:

a housing having a receiving cavity; the shell is provided with an inlet and an outlet which are communicated with the accommodating cavity, so that fluid flows in from the inlet and flows out from the outlet;

the filter part is arranged in the accommodating cavity and comprises a plurality of magnets;

wherein the length direction of the magnet is intersected with the flow direction of the fluid in the accommodating cavity.

In some embodiments, the length of the magnet is perpendicular to the flow direction of the fluid within the receiving chamber.

In some embodiments, the filter portion comprises at least two layers of magnets in the inlet-to-outlet direction; in the at least two layers of magnets, magnets of adjacent layers are arranged in a crossed mode.

In some embodiments, the housing is a hollow cylinder, and the inlet and the outlet are two ports of the hollow cylinder, respectively; and the central axis of each magnet is perpendicular to the central axis of the shell.

In some embodiments, in each layer of magnets, the central axes of the magnets are coplanar.

In some embodiments, the length of each magnet in each layer of magnets decreases in the direction from the central axis of the receiving chamber to the inner wall of the receiving chamber.

In some embodiments, the magnets of adjacent layers are disposed vertically in at least two layers of magnets.

In some embodiments, the distance dimension of the magnets of adjacent layers is greater than or equal to the radius dimension of the magnets in at least two layers of magnets.

In some embodiments, in the radial direction of the receiving chamber, both ends of the magnet are in clearance with the inner wall of the receiving chamber.

In some embodiments, the magnet is a rod-like structure; the cross-sectional shape of the rod-like structure is circular, elliptical or polygonal.

In some embodiments, the filter device further comprises a support; the supporting part is abutted with the inner wall of the accommodating cavity; a plurality of magnets are fixed on the support portion to form a magnetic tower.

In some embodiments, the support includes a cross-type partition dividing the containment chamber into a plurality of isolated subchambers; at least two layers of through holes are arranged on the cross type partition plate at intervals along the central axis of the shell, and each through hole is used for penetrating one magnet.

In some embodiments, the cross-shaped separator is a cross-shaped separator; the cross-shaped partition plate comprises four sub-partition plates for dividing the accommodating cavity into four mutually isolated sub-chambers; and in the four sub-clapboards, at least two through holes are formed in each sub-clapboard along the radial direction of the accommodating cavity at intervals, and a magnet is arranged in each through hole in a penetrating way.

In some embodiments, the magnets on two of the four sub-spacers, which are arranged coplanar, are arranged axisymmetrically.

In some embodiments, the housing is provided with a first blocking structure at the inlet and a second blocking structure at the outlet, the first blocking structure and the second blocking structure being for limiting the magnet tower within the receiving cavity.

In some embodiments, the housing is provided with a first annular clamping groove surrounding the inlet, and the first blocking structure is a first clamping ring arranged in the first annular clamping groove; the shell is provided with a second annular clamping groove surrounding the outlet, and the second blocking structure is a second clamping ring arranged in the second annular clamping groove.

In some embodiments, the housing includes a first sub-hollow cylinder and a second sub-hollow cylinder disposed in an inlet-to-outlet direction; the first end of the first sub hollow columnar body is an inlet, and the first end of the second sub hollow columnar body is an outlet; the second end of the first sub-hollow cylindrical body, which is far from the inlet, is connected with the second end of the second sub-hollow cylindrical body, which is far from the outlet.

In some embodiments, the second end of the first sub-hollow cylinder is welded to the second end of the second sub-hollow cylinder.

In some embodiments, the outer surface of the first end of the first sub-hollow cylinder has a first annular flange and the outer surface of the first end of the second sub-hollow cylinder has a second annular flange; the surface of the first annular flange far away from the second sub-hollow columnar body is provided with a first connecting groove, and the surface of the second annular flange far away from the first sub-hollow columnar body is provided with a second connecting groove.

The beneficial effects are that: according to the utility model, the plurality of magnets are arranged in the shell to form the filter device, so that on one hand, the plurality of magnets have the function of attracting magnetic materials in slurry, and on the other hand, the length directions of the plurality of magnets are crossed with the flow direction of fluid in the accommodating cavity, so that the plurality of magnets have the function of a filter component, the structure of the filter device is simplified, and the filter effect of the filter device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first schematic view of a filter device provided herein;

FIG. 2 is a schematic view of a filter unit of the filter apparatus of FIG. 1;

FIG. 3 is a second schematic view of the filter device provided herein;

FIG. 4 is a schematic view of a filter unit of the filter apparatus of FIG. 3;

FIG. 5 is a schematic view of the structure of the support portion of the filter device provided in FIG. 3;

FIG. 6 is a third schematic view of a filter device provided herein;

FIG. 7 is a schematic view of the housing and filter portion of the filter apparatus provided in FIG. 6;

fig. 8 is a fourth structural schematic diagram of the filtering device provided in the present application.

Reference numerals in the specific embodiments are as follows:

100-shell, 200-filter part, 110-accommodating cavity, 101-inlet, 102-outlet, 210-magnet, 220-support part, 221-through hole, 310-first blocking structure, 120-first annular clamping groove, 140-first sub-hollow column body, 150-second sub-hollow column body, 141-first annular flange, 151-second annular flange, 1411-first connecting groove.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The research and development personnel of the application find in the research and development process that: in the production process of the lithium ion secondary battery, if magnetic particles in cathode slurry and/or anode slurry are not filtered and removed in time before coating, the magnetic particles are easy to be mixed in an active material layer of a cathode pole piece and/or an anode pole piece, so that the problem of diaphragm puncture among pole pieces is easy to be caused in the winding and/or using process of a battery core, and further the problem of battery performance reduction caused by battery short circuit and the like is easy to be caused. Therefore, effective filtration of the magnetic particles therein is required prior to coating of the cathode slurry and/or anode slurry.

On the one hand, the device for filtering the slurry containing the magnetic material needs to have a magnetic component to adsorb the magnetic material, on the other hand, the device needs to have a filter component to filter the slurry, and the occupation space of the magnetic component and the filter component in the filter device is large, so that the filter effect is easily influenced. In addition, the setting direction of the magnetic components in some filtering devices in the prior art is parallel to the flow direction of the fluid in the accommodating cavity, and the magnetic components can only be adsorbed magnetically, so that the magnetic components have little effect on the filtering effect.

The filtering device can be used for filtering and removing magnetic particles in cathode slurry and/or anode slurry in the production process of the lithium ion secondary battery, and can also be used for filtering and screening raw materials of the cathode slurry and/or the anode slurry in the production process of the lithium ion secondary battery, but is not limited to the method.

The present application is described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1-2, fig. 1 is a schematic first structural diagram of a filtering device provided in the present application, and fig. 2 is a schematic structural diagram of a filtering portion of the filtering device provided in fig. 1.

Referring to fig. 1-2, the present application provides a filtration device comprising: a housing 100 and a filter portion 200. The housing 100 has a receiving cavity 110. The housing 100 is provided with an inlet 101 and an outlet 102 communicating with the accommodation chamber 110 such that fluid flows in from the inlet 101 and out from the outlet 102. The filter part 200 is disposed in the receiving chamber 110 and includes a plurality of magnets 210. Wherein the length L of the magnet 210 intersects the flow direction Y of the fluid in the receiving chamber 110.

In this example, the filter means is a means for filtering slurry containing a magnetic material in a lithium ion battery production process. The housing 100 represents the housing of the filter device for interfacing with the piping carrying the slurry containing the magnetic material in the lithium ion battery production process. The filter unit 200 is a functional part of the filter device for removing the magnetic material from the slurry containing the magnetic material. The housing chamber 110 represents a space in the housing 100 through which the slurry containing the magnetic material passes through the filter unit 200. Inlet 101 represents the opening of the side of housing 100 that receives unfiltered slurry. Outlet 102 represents the opening of the side of housing 100 that outputs the filtered slurry. The magnet 210 represents a metal rod having magnetism as a main material forming the filter part 200. The length L of the magnet 210 represents the axial length of the magnet 210. The flow direction Y of the fluid in the receiving chamber 110 indicates the direction from the inlet 101 to the outlet 102. The intersection of the length L of the magnet 210 with the flow direction Y of the fluid in the receiving chamber 110 means that the length L of the magnet 210 is at an angle (90 degrees in fig. 1) to the flow direction Y of the fluid in the receiving chamber 110.

In this embodiment, the plurality of magnets 210 are disposed in the housing 100 to form a filtering device, on one hand, the plurality of magnets 210 have the function of attracting magnetic materials in slurry, and on the other hand, the length L direction of the plurality of magnets 210 is intersected with the flow direction Y of the fluid in the accommodating cavity 110, so that the plurality of magnets 210 have the function of a filtering component, the structure of the filtering device is simplified, and the filtering effect of the filtering device is improved.

The plurality of magnets 210 are assembled to form a filtering hole or gap for filtering the slurry containing the magnetic material on the one hand, and the plurality of magnets 210 can uniformly attract the magnetic material in the slurry on the other hand.

In some embodiments, the filter portion 200 includes at least two layers of magnets 210 along the direction of the inlet 101 to the outlet 102; of the at least two layers of magnets 210, magnets 210 of adjacent layers are disposed crosswise.

In this embodiment, the magnets 210 of the adjacent layers are disposed in a crossed manner to indicate that the extending directions of the magnets 210 of the adjacent layers have a certain included angle.

The filtering device provided in this embodiment is disposed across the magnets 210 of the adjacent layers, so that the plurality of magnets 210 form a plurality of filtering holes in the cross-sectional direction of the accommodating cavity 110, so that the slurry containing the magnetic material flows along the plurality of magnets 210, and is attracted by the magnets 210 in the flowing process, so as to trap the magnetic material in the slurry.

In some embodiments, the magnets 210 of adjacent layers are disposed vertically (as shown in fig. 1) in at least two layers of magnets 210.

In this embodiment, the perpendicular arrangement of the magnets 210 in the adjacent layers indicates that the angle between the length direction of the magnets 210 and the flow direction of the fluid in the accommodating chamber 110 is 90 degrees.

The filtering device provided in this embodiment is perpendicular to the flow direction of the fluid in the accommodating cavity 110 through the length direction of the magnet 210, so that the slurry is prevented from flowing along the length direction of the magnet 210 during the process of flowing through the filtering device, and the filtering effect is best.

In some embodiments, the housing 100 is a hollow cylinder and the inlet 101 and the outlet 102 are two ports of the hollow cylinder, respectively. At least two layers of magnets 210 are provided, each layer of magnets 210 being at least two (two in fig. 1), and a central axis of each magnet 210 being perpendicular to a central axis of the housing 100.

In this embodiment, the central axis of the magnet 210 represents the line connecting all cross-sectional centroids of the magnet 210. The central axis of the housing 100 represents the line connecting all cross-sectional centroids of the housing 100. The extending direction of each magnet 210 is perpendicular to the extending direction of the central axis in the housing 100.

In the filtering device provided in this embodiment, by arranging the multiple layers of crossed magnets 210 along the extending direction of the central axis of the housing 100, each layer of magnets 210 is perpendicular to the extending direction of the central axis of the housing 100, so that the filtering resistance is small and the filtering efficiency is high in the process of flowing the slurry through the filtering device.

In some embodiments, the length L of the magnet 210 is perpendicular to the flow direction Y of the fluid within the receiving chamber 110 (as shown in fig. 1).

The length L direction of the magnet 210 of the filter device provided in this embodiment is perpendicular to the flow direction Y of the fluid in the accommodating chamber 110, so that the filtering resistance is small and the filtering efficiency is high in the process of flowing the slurry through the filter device.

In some embodiments, the receiving chamber 110 is cylindrical, and the length of each magnet 210 decreases in each layer of magnets 210 along the direction from the central axis of the receiving chamber 110 to the inner wall of the receiving chamber 110.

In the present embodiment, the direction from the central axis of the accommodating chamber 110 to the inner wall of the accommodating chamber 110 means the direction of the centroid of the cross section of the accommodating chamber 110 toward the inner wall of the accommodating chamber 110 in the radial direction of the accommodating chamber 110.

Each magnet 210 in each layer of magnets 210 of the present embodiment is adapted to the shape arrangement of the receiving cavity 110.

In some embodiments, in each layer of magnets 210, the central axes of the magnets 210 are coplanar.

In this embodiment, the central axes of the magnets 210 are coplanar, meaning that the central axes of the magnets 210 are parallel and coplanar.

In the filtering device provided in this embodiment, in each layer of magnets 210, the radial dimensions of each magnet 210 may be the same or different, and the central axes of each magnet 210 may be parallel and coplanar.

In some embodiments, in at least two layers of magnets 210, the distance dimension H of the magnets 210 of adjacent layers is greater than or equal to the radius dimension of the magnets 210.

In this embodiment, the distance between the magnets 210 of the adjacent layers indicates the distance between one end of the magnet 210 of one layer near the other magnet 210 and one end of the other magnet 210 near the one layer 210.

The filtering device provided in this embodiment avoids direct contact between the magnets 210 of the adjacent layers by the distance dimension of the magnets 210 of the adjacent layers being greater than or equal to the radius dimension of the magnets 210, and further effectively prevents slurry blocking.

In some embodiments, in the radial direction of the receiving chamber 110, both ends of the magnet 210 have a gap with the inner wall of the receiving chamber 110.

In the filtering device provided in this embodiment, by having gaps between both ends of the magnet 210 and the inner wall of the accommodating cavity 110 along the radial direction of the accommodating cavity 110, blocking is effectively prevented.

In some embodiments, the magnet 210 is a rod-like structure. The cross-section of the bar-like structure is circular, elliptical or polygonal _。 In this embodiment, the cross-sectional shape of the magnet 210 is circular, so that the magnet 210 is a cylinder with a large length-diameter ratio, so that the slurry can pass through smoothly, and the occurrence of blocking is reduced.

Referring to fig. 3 to 5, fig. 3 is a second schematic structural view of the filtering device provided in the present application, fig. 4 is a schematic structural view of a filtering portion of the filtering device provided in fig. 3, and fig. 5 is a schematic structural view of a supporting portion of the filtering device provided in fig. 3.

Referring to fig. 3, the filtering device provided in this embodiment is different from the filtering device provided in fig. 1 in that: in this embodiment, the filtering device further includes a supporting portion 220. The supporting portion 220 abuts against the inner wall of the accommodating chamber 110. A plurality of magnets 210 are fixed on the support 220 to form a magnetic tower.

In this embodiment, the support portion 220 represents a carrier provided for the plurality of magnets 210, so that the plurality of magnets 210 are assembled on the carrier, thereby facilitating the rapid assembly and disassembly of the filter portion 200 in the housing 100. The support part 220 is abutted with the inner wall of the accommodating chamber 110, so that the support part 220 assembled with the plurality of magnets 210 is plugged in from one side of the housing 100, the rapid installation of the filter part 200 can be realized, and the support part 220 assembled with the plurality of magnets 210 is pushed out from one side of the housing 100, so that the rapid disassembly of the filter part 200 can be realized.

Because the slurry containing the magnetic material is easy to cause blocking during the filtering process, the filtering device provided in this embodiment fixes the plurality of magnets 210 on the supporting portion 220, so that the supporting portion 220 is a carrier that is quickly assembled and disassembled, thereby facilitating the timely processing of blocking, and simplifying the blocking processing procedure.

In some embodiments, as shown in fig. 3-5, the support 220 includes a cross-type partition (the cross-type partition shown in fig. 3 has a 90 degree cross angle) that separates the receiving chamber 110 into a plurality of isolated subchambers. As shown in fig. 5, at least two layers of through holes 221 are spaced apart along the central axis of the housing 100 on the cross-shaped partition, and each through hole 221 is configured to pass through one magnet 210.

In this embodiment, at least two layers of through holes 221 are disposed on the cross-shaped partition at intervals for disposing at least two layers of magnets 210 on the cross-shaped partition at intervals.

In the filtering device provided in this embodiment, the plurality of magnets 210 are disposed on the cross-shaped partition plate through the through holes 221, so as to complete the rapid assembly and disassembly of the plurality of magnets 210 on the supporting portion 220, so as to facilitate rapid removal of the blocking material attached to the magnets 210.

Specifically, in the present embodiment, as shown in fig. 3 to 5, the supporting portion 220 is a cross-shaped partition plate. The cross-shaped partition includes four sub-partitions to divide the receiving chamber 110 into four sub-chambers isolated from each other. Each of the four sub-partitions is provided with at least two through holes 221 at intervals along the radial direction of the accommodating chamber, and one magnet 210 is arranged in each through hole 221 in a penetrating manner.

In this embodiment, the accommodating cavity 110 is separated into four mutually isolated subchambers by the cross-shaped partition board, so that the slurry is filtered by the four subchambers, and the blocking condition easily caused by one through chamber is avoided.

In some embodiments, as shown in fig. 4, the magnets 210 on two sub-partitions arranged in a coplanar manner are arranged axisymmetrically among the four sub-partitions.

Referring to fig. 6-7, fig. 6 is a third schematic structural view of the filtering device provided in the present application, and fig. 7 is a schematic structural view of a housing and a filtering portion of the filtering device provided in fig. 6.

Referring to fig. 6 to 7, the filtering device provided in this embodiment is different from the filtering device provided in fig. 3 in that: in this embodiment, the housing 100 is provided with a first blocking structure 310 at the inlet 101, and a second blocking structure (not shown, the same structure as the first blocking structure 310) at the outlet 102, for limiting the magnet tower in the accommodating chamber 110.

In the present embodiment, the first blocking structure 310 and the second blocking structure represent members that block the filter part 200 from being removed from the receiving chamber 110 of the housing 100.

The filter device provided in this embodiment is convenient to quickly disassemble and assemble the filter part 200 in the accommodating cavity 110 of the housing 100 through the arrangement of the blocking structure 310 and the second blocking structure, so as to further improve the detachability of the filter device of this application.

In some embodiments, as shown in fig. 7, the housing 100 is provided with a first annular clamping groove 120 surrounding the inlet 101, and the first blocking structure 310 is a first clamping ring (as shown in fig. 6) provided in the first annular clamping groove 120; the housing 100 is provided with a second annular clamping groove (not shown) surrounding the outlet 102, and the second blocking structure is a second clamping ring (not shown) arranged in the second annular clamping groove, which is the same as the first annular clamping groove 120.

The filtering device provided in this embodiment sets the first snap ring and the second snap ring at the inlet 101 and the outlet 102 of the housing 100, so that the filtering portion 200 is quickly assembled and disassembled in the accommodating cavity 110 of the housing 100, and the first snap ring and the second snap ring are quickly assembled and disassembled.

Referring to fig. 8, fig. 8 is a schematic diagram of a fourth structure of the filtering device provided in the present application.

Referring to fig. 8, the filtering apparatus provided in this embodiment is different from the filtering apparatus provided in fig. 6 in that: in the present embodiment, the housing 100 includes a first sub-hollow cylindrical body 140 and a second sub-hollow cylindrical body 150 disposed in a direction from the inlet 101 to the outlet 102. The first end of the first sub-hollow cylindrical body 140 is the inlet 101, and the first end of the second sub-hollow cylindrical body 150 is the outlet 102. A second end of the first sub-hollow cylinder 140 remote from the inlet 101 is connected to a second end of the second sub-hollow cylinder 150 remote from the outlet 102.

In the filtering device provided in this embodiment, the casing 100 is divided into the first hollow sub-cylindrical body 140 and the second hollow sub-cylindrical body 150, so that in some specific situations, only the second hollow sub-cylindrical body 150 can be disassembled and assembled, and the rapid disassembly and assembly of the filtering portion 200 are completed, so that the frequent disassembly and assembly of the first hollow sub-cylindrical body 140 is avoided, the degree of combination between the first hollow sub-cylindrical body and the pipeline is reduced, and the speed of the filtering process is increased.

In some embodiments, the second end of the first sub-hollow cylinder 140 is welded to the second end of the second sub-hollow cylinder 150.

In the filtering device provided in this embodiment, the first hollow columnar body 140 and the second hollow columnar body 150 are connected by welding, so that the process is simple, and multiple disassembly and assembly are convenient.

In some embodiments, the outer surface of the first end of the first sub-hollow cylinder 140 has a first annular flange 141 and the outer surface of the first end of the second sub-hollow cylinder 150 has a second annular flange 151; the surface of the first annular flange 141 remote from the second sub-hollow cylindrical body 150 has a first connection groove 1411, and the surface of the second annular flange 151 remote from the first sub-hollow cylindrical body 140 has a second connection groove (not shown, same structure as the first connection groove 1411).

The filtering device provided in this embodiment is provided with a first connecting groove 1411 and a second connecting groove through a first annular flange 141 and a second annular flange 151 for connecting with a pipe for transporting slurry containing a magnetic material in a lithium ion battery production process.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (19)

1. A filter device, comprising:

a housing having a receiving cavity; an inlet and an outlet which are communicated with the containing cavity are arranged on the shell, so that fluid flows in from the inlet and flows out from the outlet;

the filter part is arranged in the accommodating cavity and comprises a plurality of magnets;

wherein, the length direction of the magnet is crossed with the flow direction of the fluid in the accommodating cavity.

2. The filter device of claim 1, wherein the length of the magnet is perpendicular to the flow direction of the fluid in the receiving chamber.

3. The filter device of claim 2, wherein the filter portion comprises at least two layers of the magnets in a direction from the inlet to the outlet; and in the at least two layers of magnets, magnets of adjacent layers are arranged in a crossing manner.

4. A filter device according to claim 3, wherein the housing is a hollow cylindrical body, the inlet and the outlet being two ports of the hollow cylindrical body, respectively; and in the at least two layers of magnets, each layer of magnets is at least two, and the central axis of each magnet is perpendicular to the central axis of the shell.

5. The filter device of claim 4, wherein the central axes of the magnets in each layer are coplanar.

6. The filter device of claim 5, wherein the length of each of said magnets in each layer decreases in a direction from a central axis of said receiving chamber to an inner wall of said receiving chamber.

7. A filter device according to claim 3, wherein the magnets of adjacent layers are arranged vertically in at least two layers of the magnets.

8. A filter device according to claim 3, wherein the distance dimension of the magnets of adjacent layers of at least two layers of magnets is greater than or equal to the radial dimension of the magnets.

9. A filter device according to claim 3, wherein in the radial direction of the receiving chamber, both ends of the magnet are in clearance with the inner wall of the receiving chamber.

10. A filter device according to claim 3, wherein the magnet is of rod-like configuration; the cross-sectional shape of the rod-like structure is circular, elliptical or polygonal.

11. The filter device of claim 4, further comprising a support; the supporting part is abutted with the inner wall of the accommodating cavity; a plurality of magnets are fixed on the support portion to form a magnetic tower.

12. The filter device of claim 11, wherein the support portion includes a cross-type partition dividing the receiving chamber into a plurality of isolated subchambers; at least two layers of through holes are arranged on the cross type partition plate at intervals along the central axis of the shell, and each through hole is used for penetrating one magnet.

13. The filter arrangement of claim 12, wherein the cross-type partition is a cross-type partition; the cross-shaped partition plate comprises four sub-partition plates for dividing the accommodating cavity into four mutually isolated sub-chambers; and in the four sub-partition plates, at least two through holes are formed in each sub-partition plate at intervals along the radial direction of the accommodating cavity, and each through hole is internally provided with one magnet in a penetrating way.

14. The filter device according to claim 13, wherein said magnets on two of said sub-partitions arranged in a coplanar manner are arranged axisymmetrically among four of said sub-partitions.

15. The filter device according to claim 11, wherein the housing is provided with a first blocking structure at the inlet and a second blocking structure at the outlet, the first blocking structure and the second blocking structure being for confining the magnetic tower within the receiving cavity.

16. The filter device of claim 15, wherein the housing is provided with a first annular groove surrounding the inlet, and the first blocking structure is a first snap ring provided in the first annular groove; the shell is provided with a second annular clamping groove surrounding the outlet, and the second blocking structure is a second clamping ring arranged in the second annular clamping groove.

17. The filter device of claim 4, wherein the housing comprises a first sub-hollow cylinder and a second sub-hollow cylinder disposed along a direction from the inlet to the outlet; the first end of the first sub-hollow columnar body is the inlet, and the first end of the second sub-hollow columnar body is the outlet; a second end of the first sub-hollow cylinder remote from the inlet is connected to a second end of the second sub-hollow cylinder remote from the outlet.

18. The filter device of claim 17, wherein the second end of the first sub-hollow cylindrical body is welded to the second end of the second sub-hollow cylindrical body.

19. The filter device of claim 17, wherein the outer surface of the first end of the first sub-hollow cylinder has a first annular flange and the outer surface of the first end of the second sub-hollow cylinder has a second annular flange; the surface of the first annular flange far away from the second sub-hollow columnar body is provided with a first connecting groove, and the surface of the second annular flange far away from the first sub-hollow columnar body is provided with a second connecting groove.

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