Filtering device and water purifying equipment

Abstract

The utility model relates to a filtering device and water purifying equipment, the filtering device comprises a shell, a filter element structure and an ultrasonic generator, the shell is provided with a water inlet, a wastewater outlet and a purified water outlet, and the purified water outlet and the water inlet are arranged at intervals along a preset direction; the filter element structure is arranged in the shell and extends along a preset direction; the ultrasonic generator is of an annular structure and extends in the preset direction, and the outer side wall of the shell is coated with the ultrasonic generator. The ultrasonic generator can clean the filter element structure in all directions, it is guaranteed that each position of the filter element structure can be cleaned, the cleaning effect is improved, the filter element structure can be prevented from being damaged, the filtering effect of the filtering device is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifier filter elements, in particular to a filtering device and water purification equipment. Background Art

[0002] After long-term use, pollutants will remain on the surface of the filter element of the water purification equipment, affecting the filtering effect. Therefore, the filter element needs to be replaced or cleaned regularly.

[0003] The existing filter element cleaning method is usually to perform forward flushing and back flushing on the filter element, but the cleaning effect is not good, and back flushing may also cause damage to the filter element. Utility Model Content

[0004] Based on this, it is necessary to provide a filtering device and a water purification device to address the above problems, wherein the filtering device can improve the cleaning effect of the filter element.

[0005] The utility model first provides a filtering device, comprising: a shell, provided with a water inlet, a wastewater outlet and a clean water outlet spaced apart from the water inlet along a preset direction; a filter element structure, arranged in the shell and extending along the preset direction; and an ultrasonic generator, arranged in an annular structure and extending along the preset direction, the ultrasonic generator being covered on the outer side wall of the shell.

[0006] In the above-mentioned filtering device, during operation, the filtering device controls water to flow from the water inlet into the housing, and then flows out of the housing from the clean water outlet after being filtered by the filter element structure; when cleaning the filtering device, first turn on the ultrasonic generator to perform ultrasonic vibration cleaning on the filter element structure, and after a preset time, control water to flow from the water inlet into the housing, and rinse the filter element structure, so that the pollutants that fall off the surface of the filter element structure flow out of the housing from the wastewater outlet along with the water flow; the ultrasonic generator can perform all-round cleaning of the filter element structure, ensuring that every position of the filter element structure can be cleaned, improving the cleaning effect, and also avoiding damage to the filter element structure, ensuring the filtering effect of the filtering device and extending its service life.

[0007] In one embodiment, the ultrasonic generator includes a first arc-shaped portion and a second arc-shaped portion electrically connected to each other, and the first arc-shaped portion and the second arc-shaped portion are detachably connected and are arranged to form an annular structure.

[0008] With such arrangement, the ultrasonic generator is formed by splicing the first arc-shaped portion and the second arc-shaped portion, so that the ultrasonic generator can be easily assembled to the outer side wall of the shell and can also be easily produced and processed.

[0009] In one embodiment, the first arc-shaped portion and the second arc-shaped portion are detachably connected via a fastener; and / or the filtering device further includes a clamp disposed around the outer circumference of the first arc-shaped portion and the second arc-shaped portion.

[0010] Such an arrangement ensures the stability and reliability of the connection between the first arc-shaped portion, the second arc-shaped portion and the housing, and the connection method is simple, which facilitates the assembly of the ultrasonic generator.

[0011] In one of the embodiments, a positive terminal and a negative terminal are protrudingly provided on both sides where the first arc-shaped portion is connected to the second arc-shaped portion, and corresponding positive electrode grooves and negative electrode grooves are provided on both sides where the second arc-shaped portion is connected to the first arc-shaped portion; in the assembled state, the positive terminal is plugged into and electrically connected to the positive electrode groove, and the negative terminal is plugged into and electrically connected to the negative electrode groove.

[0012] With this arrangement, the positive terminal and the positive electrode groove, as well as the negative terminal and the negative electrode groove, are not easy to fall off, ensuring that the ultrasonic generator can work normally; and in the assembled state, the positive terminal and the negative terminal are not exposed, thereby ensuring a regular appearance.

[0013] In one embodiment, the water inlet is arranged on the side wall of the shell, and the waste water outlet and the clean water outlet are respectively arranged at two ends of the shell along the preset direction.

[0014] With such an arrangement, the wastewater outlet can be arranged downward, so that the hollow fiber membrane can be positively flushed during the cleaning process of the filter element structure, thereby avoiding the breakage of the membrane fibers of the hollow fiber membrane, thereby avoiding damage to the filter element structure and affecting the filtering effect.

[0015] In one embodiment, the distance between the water inlet and the wastewater outlet is smaller than the distance between the water inlet and the clean water outlet.

[0016] With such arrangement, during operation of the filter device, water flowing into the housing from the water inlet can fully contact the filter element structure and then flow out from the clean water outlet, thereby improving the utilization rate of the filter element structure and ensuring the filtering effect.

[0017] In one embodiment, the filter element structure includes a hollow fiber membrane extending along the preset direction and epoxy resin disposed at both ends of the hollow fiber membrane.

[0018] With such an arrangement, the hollow fiber membrane has a good filtering effect and a high filtering efficiency; the epoxy resin can form a strong bonding layer between the hollow fiber membrane and the shell, thereby improving the stability and durability of the hollow fiber membrane.

[0019] In one embodiment, the housing includes a shell and a cover, the shell is provided with an opening at at least one end along the preset direction, the cover is detachably covered with the opening, and the housing further includes a seal arranged between the shell and the cover.

[0020] With such arrangement, the detachable connection between the shell and the cover body can facilitate the production and processing of the shell, and also facilitate the installation of the filter element structure into the shell. The seal can ensure the sealing of the shell and the cover body in the assembled state.

[0021] In one embodiment, the filtering device also includes a first solenoid valve arranged at the water inlet and used to control the on-off of the water inlet; and / or, the filtering device also includes a second solenoid valve arranged at the wastewater outlet and used to control the on-off of the wastewater outlet; and / or, the filtering device also includes a third solenoid valve arranged at the clean water outlet and used to control the on-off of the clean water outlet.

[0022] With such arrangement, the solenoid valve can facilitate the user to control the on / off of the water inlet, wastewater outlet and clean water outlet, and has reliable operation and is easy to assemble.

[0023] An embodiment of the utility model further provides a water purification device, comprising the filtering device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a filtering device according to one embodiment of the utility model;

[0026] Figure 2 The utility model provides Figure 1 A cross-sectional schematic diagram of

[0027] Figure 3 The utility model provides Figure 2 The enlarged schematic diagram of point A in the middle;

[0028] Figure 4 The utility model provides Figure 1 Schematic diagram of the explosion of the ultrasonic generator.

[0029] Figure numerals: 1. outer shell; 11. water inlet; 12. wastewater outlet; 13. clean water outlet; 14. shell; 15. cover; 16. seal; 2. filter element structure; 21. hollow fiber membrane; 22. epoxy resin; 3. ultrasonic generator; 31. first arc-shaped portion; 311. positive terminal; 312. negative terminal; 32. second arc-shaped portion; 321. positive electrode groove; 322. negative electrode groove; 33. wire; 34. support rib; 4. clamp; 5. first solenoid valve; 6. second solenoid valve; 7. third solenoid valve. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0035] The filter element of water purification equipment, such as hollow fiber filter element, will have residual pollutants on the surface after long-term use, which will affect the filtering effect, so the filter element needs to be replaced or cleaned regularly. The existing filter element cleaning method usually performs forward flushing and back flushing on the filter element, but this cleaning method is difficult to completely clean the pollutants on the surface of the filter element, and the cleaning effect is not good. In addition, back flushing may also cause the membrane of the hollow fiber filter element to break and the filter element to be damaged, resulting in increasingly poor filtering effects.

[0036] In order to solve the above problems, Figures 1 to 4 As shown, the utility model first provides a filtering device, which can improve the cleaning effect of the filter element and will not damage the filter element.

[0037] like Figure 1 to Figure 2 As shown, specifically, the filtering device includes a shell 1, a filter element structure 2 and an ultrasonic generator 3, wherein: the shell 1 is provided with a water inlet 11, a wastewater outlet 12 and a clean water outlet 13 spaced apart from the water inlet 11 along a preset direction; the filter element structure 2 is arranged in the shell 1 and extends along a preset direction; the ultrasonic generator 3 is arranged as a ring structure and extends along a preset direction, and the ultrasonic generator 3 is covered on the outer wall of the shell 1.

[0038] Among them, the preset direction is the ±X axis direction shown in the figure.

[0039] During operation, the filter device provided by the embodiment of the utility model controls unfiltered raw water to flow into the housing 1 from the water inlet 11, and flows out of the housing 1 from the clean water outlet 13 after being filtered by the filter element structure 2; when the filter device needs to be cleaned after long-term use, the ultrasonic generator 3 is first turned on to perform ultrasonic vibration cleaning on the filter element structure 2, and after a preset time, water is controlled to flow into the housing 1 from the water inlet 11, and the filter element structure 2 is rinsed, so that the pollutants falling off the surface of the filter element structure 2 flow out of the housing 1 from the wastewater outlet 12 along the water flow; since the filter element structure 2 and the ultrasonic generator 3 both extend in the ±X direction, and the ultrasonic generator 3 is set as a ring structure covering the outer wall of the housing 1, the ultrasonic generator 3 can perform all-round cleaning on the filter element structure 2, ensuring that every position of the filter element structure 2 can be cleaned, reducing cleaning dead angles, thereby improving the cleaning effect of the filter element structure 2, and using ultrasonic cleaning of the filter element structure 2 can also avoid damage to the filter element structure 2, thereby ensuring the filtering effect of the filter device and extending the service life.

[0040] The preset time may be 30 seconds, or may be adjusted according to actual needs, and the embodiment of the present utility model does not impose any specific limitation thereto.

[0041] like Figures 2 to 3 As shown, the housing 1 includes a housing 14 and a cover 15, the housing 14 is provided with an opening at at least one end along the ±X axis direction, the cover 15 is detachably covered with the opening, and the housing 1 also includes a seal 16 disposed between the housing 14 and the cover 15. The detachable connection between the housing 14 and the cover 15 can facilitate the production and processing of the housing 1, and also facilitate the installation of the filter element structure 2 into the housing 1. The seal 16 can ensure the sealing of the housing 14 and the cover 15 in the assembled state, and prevent the liquid in the housing 1 from leaking from the gap between the housing 14 and the cover 15.

[0042] In the illustrated embodiment, both ends of the shell 14 along the ±X direction are provided with openings, and there are two covers 15, which cover the openings at both ends respectively. In addition, the cover 15 and the shell 14 are connected by threads to facilitate the assembly of the housing 1 and to ensure the stability and reliability of the connection between the cover 15 and the shell 14. Of course, in other embodiments, the shell 14 may also have an opening at only one end, in which case the number of the cover 15 is also set to one. In addition, the cover 15 and the shell 14 may also be connected by screws, clamping or other methods. After the assembly is completed, the cover 15 and the shell 14 may be fixed by welding to improve the reliability and sealing of the connection between the two.

[0043] like Figure 2As shown, in the illustrated embodiment, the filter element structure 2 includes a hollow fiber membrane 21 extending along the ±X axis direction and an epoxy resin 22 provided at both ends of the hollow fiber membrane 21. During the processing, the hollow fiber membrane 21 is first passed through the openings at both ends of the shell 14 along the ±X axis direction, and then the liquid epoxy resin 22 is encapsulated at both ends of the shell 14. After the epoxy resin 22 is cured, the excess membrane filaments of the hollow fiber membrane 21 and the epoxy resin 22 at the openings at both ends of the shell 14 are removed, and finally the cover 15 is covered on the openings at both ends of the shell 14. The hollow fiber membrane 21 has a large surface area and a large number of microporous channels, i.e., filter holes, which can achieve high-throughput separation and filtration, so the hollow fiber membrane 21 has a good filtration effect and high filtration efficiency. The epoxy resin 22 can form a strong bonding layer between the hollow fiber membrane 21 and the shell 14, thereby improving the stability and durability of the hollow fiber membrane 21. Furthermore, the hollow fiber membrane 21 has good oxidation resistance, and the epoxy resin 22 has good adhesion and corrosion resistance, thereby being able to extend the service life of the filter element structure 2 .

[0044] The outer diameter of the hollow fiber membrane 21 is 0.5 mm to 2 mm, the inner diameter is 0.3 mm to 1.4 mm, and filter holes are arranged on the tube wall of the hollow fiber membrane 21, and the pore size of the filter holes is 0.01 μm to 0.001 μm. In addition, the working pressure range of the hollow fiber membrane 21 is 0.1 Mpa to 0.6 Mpa, that is, the water pressure of the raw water flowing into the housing 1 needs to meet the above range to ensure that the filter device can work normally.

[0045] Of course, in other embodiments, the filter element structure 2 may also use an ultrafiltration membrane filter element or other polymer filter element, as long as it has a good filtering effect and can be cleaned by ultrasonic wave. The embodiment of the utility model does not make any specific restrictions here.

[0046] like Figure 1 to Figure 2 As shown, the water inlet 11 is arranged on the side wall of the housing 1, and the wastewater outlet 12 and the clean water outlet 13 are respectively arranged at both ends of the housing 1 along the ±X axis direction. In actual use, the ±X axis extends in the up-down direction, and the wastewater outlet 12 is arranged downward, and the clean water outlet 13 is arranged upward. In the process of cleaning the filter element structure 2, water flows into the housing 1 from the water inlet 11, flushes the filter element structure 2, and then flows out from the wastewater outlet 12, so that the hollow fiber membrane 21 can be positively flushed, and the membrane filaments of the hollow fiber membrane 21 can be prevented from being broken due to backwashing, thereby preventing the filter element structure 2 from being damaged and affecting the filtering effect.

[0047] Moreover, the distance between the water inlet 11 and the wastewater outlet 12 is smaller than the distance between the water inlet 11 and the clean water outlet 13. In this way, during the operation of the filter device, unfiltered raw water flows into the housing 1 from the water inlet 11, and can flow out from the clean water outlet 13 after being fully in contact with the filter element structure 2, so as to improve the utilization rate of the filter element structure 2 and ensure the filtering effect.

[0048] like Figure 1 to Figure 2 As shown, in the illustrated embodiment, the filter device further includes a first solenoid valve 5 disposed at the water inlet 11 and used to control the on-off of the water inlet 11; the filter device further includes a second solenoid valve 6 disposed at the wastewater outlet 12 and used to control the on-off of the wastewater outlet 12; the filter device further includes a third solenoid valve 7 disposed at the clean water outlet 13 and used to control the on-off of the clean water outlet 13. The solenoid valve can facilitate the user to control the on-off of the water inlet 11, the wastewater outlet 12 and the clean water outlet 13, and has reliable operation and is easy to assemble.

[0049] During operation of the filter device, the first solenoid valve 5 and the third solenoid valve 7 are controlled to be opened, and the second solenoid valve 6 is closed, so that water flows into the housing 1 from the water inlet 11, and flows out of the housing 1 from the clean water outlet 13 after being filtered by the filter element structure 2. When cleaning the filter device, the first solenoid valve 5, the second solenoid valve 6, and the third solenoid valve 7 are first controlled to be closed, and the ultrasonic generator 3 is turned on to perform ultrasonic vibration cleaning on the filter element structure 2. After a preset time, the first solenoid valve 5 and the second solenoid valve 6 are controlled to be opened, and the third solenoid valve 7 is closed, so that water flows into the housing 1 from the water inlet 11, and flows out of the housing 1 from the waste water outlet 12 after flushing the filter element structure 2.

[0050] Of course, in other embodiments, gate valves, stop valves and other valves that can control the opening and closing of the water inlet 11, the wastewater outlet 12 and the clean water outlet 13 may also be used, and the utility model does not make specific limitations here.

[0051] like Figure 1 and Figure 4 As shown, the ultrasonic generator 3 includes a first arc-shaped portion 31 and a second arc-shaped portion 32 electrically connected to each other, and the first arc-shaped portion 31 and the second arc-shaped portion 32 are detachably connected and are arranged to form a ring structure. The ultrasonic generator 3 is formed by splicing the first arc-shaped portion 31 and the second arc-shaped portion 32, so that the ultrasonic generator 3 can be assembled to the outer wall of the housing 1, and it can also be convenient for production and processing. Among them, one of the first arc-shaped portion 31 and the second arc-shaped portion 32 is electrically connected to an external power supply or a controller or other equipment through a wire 33.

[0052] In the illustrated embodiment, the central angles of the first arc portion 31 and the second arc portion 32 are both 180°, which is further convenient for production and processing. Of course, in other embodiments, the central angle of one of the first arc portion 31 and the second arc portion 32 may be greater than 180°, the central angle of the other may be less than 180°, and the sum of the central angles of the two may be 360°, as long as the two can be surrounded to form a complete annular structure, and the embodiment of the utility model is not specifically limited here.

[0053] like Figure 4 As shown, the first arc portion 31 and the second arc portion 32 are detachably connected by fasteners. The fasteners may be screws, bolts and other elements to ensure the stability and reliability of the connection between the first arc portion 31 and the second arc portion 32, and the connection method is simple, which is convenient for assembling the ultrasonic generator 3. In one embodiment, one of the first arc portion 31 and the second arc portion 32 is provided with a through hole, and the other is provided with a threaded hole, and the fastener can pass through the through hole and be fixed with the threaded hole by threading. In another embodiment, the first arc portion 31 and the second arc portion 32 are both provided with through holes, and the fastener can pass through the two through holes in sequence and be fixed with the nut by threading, so as to tighten and fix the first arc portion 31 and the second arc portion 32. Among them, the number of fasteners can be multiple, and multiple fasteners can improve the stability and reliability of the connection between the first arc portion 31 and the second arc portion 32.

[0054] like Figure 1 and Figure 4 As shown, the filter device also includes a hoop 4 arranged around the outer periphery of the first arc-shaped portion 31 and the second arc-shaped portion 32. The hoop 4 can further improve the stability and reliability of the connection between the first arc-shaped portion 31, the second arc-shaped portion 32 and the housing 14, so that the ultrasonic generator 3 can be reliably covered on the outer side wall of the housing 14. In addition, the filter device can also be fixed to other external structures through the hoop 4, which is convenient for installation and can avoid damaging the ultrasonic generator 3 and the housing 1. Among them, the number of the hoop 4 can be one, two, three or more, preferably two, while ensuring the stability and reliability of the ultrasonic generator 3, avoiding increasing the difficulty of assembly.

[0055] like Figure 2 and Figure 4 As shown, the outer wall of the ultrasonic generator 3 also has a plurality of support ribs 34 arranged at intervals along the ±X axis direction, and each clamp 4 is clamped between any two adjacent support ribs 34. The support ribs 34 can ensure the stability and reliability of the connection between the clamp 4 and the ultrasonic generator 3, and prevent the clamp 4 from moving relative to the ultrasonic generator 3 along the ±X axis direction.

[0056] Of course, the first arc portion 31 and the second arc portion 32 can also be fixedly connected only by fasteners, or only by the clamp 4. The first arc portion 31 and the second arc portion 32 can also be fixedly connected by other means such as snaps. As long as the stability and reliability of the connection between the first arc portion 31 and the second arc portion 32 can be guaranteed, and the ultrasonic generator 3 can be reliably covered on the outer wall of the shell 14, the embodiment of the utility model does not make specific restrictions here.

[0057] like Figure 4 As shown, in the illustrated embodiment, the two sides where the first arc portion 31 and the second arc portion 32 are connected are respectively provided with a positive terminal 311 and a negative terminal 312, and the two sides where the second arc portion 32 and the first arc portion 31 are connected are respectively provided with corresponding positive electrode grooves 321 and negative electrode grooves 322; in the assembled state, the positive electrode terminal 311 and the positive electrode groove 321 are plugged in and electrically connected, and the negative electrode terminal 312 and the negative electrode groove 322 are plugged in and electrically connected. The electrical connection between the first arc portion 31 and the second arc portion 32 is simple and convenient, and the positive electrode terminal 311 and the positive electrode groove 321 and the negative electrode terminal 312 and the negative electrode groove 322 are not easy to fall off, thereby ensuring that the ultrasonic generator 3 can work normally. In the assembled state, the positive electrode terminal 311 and the negative electrode terminal 312 are not exposed, thereby also ensuring a neat appearance.

[0058] Of course, in other embodiments, the first arc-shaped portion 31 and the second arc-shaped portion 32 may also be electrically connected by other means such as connecting wires.

[0059] The utility model also provides a water purification device, comprising the above-mentioned filtering device. Of course, the filtering device can also be applied to other devices that need to filter liquid.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A filtering device, characterized in that: include: The housing (1) is provided with a water inlet (11), a wastewater outlet (12), and a clean water outlet (13) arranged at intervals from the water inlet (11) along a preset direction; A filter element structure (2) is disposed in the housing (1) and extends along the preset direction; and The ultrasonic generator (3) is arranged in an annular structure and extends along the preset direction; the ultrasonic generator (3) is coated on the outer side wall of the housing (1).

2. The filtering device according to claim 1, characterized in that: The ultrasonic generator (3) comprises a first arc-shaped portion (31) and a second arc-shaped portion (32) which are electrically connected to each other; the first arc-shaped portion (31) and the second arc-shaped portion (32) are detachably connected and are arranged to form an annular structure.

3. The filtering device according to claim 2, characterized in that: The first arc-shaped portion (31) and the second arc-shaped portion (32) are detachably connected via a fastener; and / or, The filtering device further comprises a hoop (4) arranged around the outer circumference of the first arc-shaped portion (31) and the second arc-shaped portion (32).

4. The filtering device according to claim 2, characterized in that: A positive terminal (311) and a negative terminal (312) are respectively provided on both sides where the first arc-shaped portion (31) and the second arc-shaped portion (32) are connected, and a corresponding positive electrode groove (321) and a negative electrode groove (322) are respectively provided on both sides where the second arc-shaped portion (32) and the first arc-shaped portion (31) are connected; In the assembled state, the positive electrode terminal (311) and the positive electrode groove (321) are plugged in and electrically connected, and the negative electrode terminal (312) and the negative electrode groove (322) are plugged in and electrically connected.

5. The filtering device according to claim 1, characterized in that: The water inlet (11) is arranged on the side wall of the outer shell (1), and the waste water outlet (12) and the clean water outlet (13) are respectively arranged at two ends of the outer shell (1) along the preset direction.

6. The filtering device according to claim 5, characterized in that: The distance between the water inlet (11) and the wastewater outlet (12) is smaller than the distance between the water inlet (11) and the clean water outlet (13).

7. The filtering device according to claim 1, characterized in that: The filter element structure (2) comprises a hollow fiber membrane (21) extending along the preset direction and epoxy resin (22) arranged at both ends of the hollow fiber membrane (21).

8. The filtering device according to claim 1, characterized in that: The housing (1) comprises a shell (14) and a cover (15); the shell (14) is provided with an opening at at least one end along the preset direction; the cover (15) is detachably covered with the opening; the housing (1) further comprises a sealing member (16) arranged between the shell (14) and the cover (15).

9. The filtering device according to claim 1, characterized in that: The filtering device further comprises a first solenoid valve (5) arranged at the water inlet (11) and used for controlling the on-off of the water inlet (11); and / or, The filtering device further comprises a second solenoid valve (6) arranged at the wastewater outlet (12) and used for controlling the on-off of the wastewater outlet (12); and / or, The filtering device further comprises a third solenoid valve (7) which is arranged at the clean water outlet (13) and is used to control the opening and closing of the clean water outlet (13).

10. A water purification device, characterized in that: The invention comprises a filtering device as described in any one of claims 1 to 9.

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