Filtering device and filtering system

Abstract

The utility model discloses a filtering device and a filtering system. The filtering device comprises a shell, a first filtering unit and a second filtering unit, a containing cavity is formed in the shell, the first filter unit comprises a first filter element and a barrel body, and the barrel body divides the containing cavity into a first chamber and a second chamber; a first flow channel is defined by the first filter element and the barrel body; the second filter unit comprises a second filter element, a second flow channel is defined by the second filter element and the shell, and the first flow channel and the second flow channel are independently arranged in the containing cavity. Therefore, independent arrangement of the first filtering unit is facilitated, the sealing performance of the first filtering unit is improved, the risk of water mixing between the first filtering unit and the second filtering unit is reduced, the reliability of the filtering device is improved, and the internal structure of the filtering device is optimized by arranging the first filtering element and the second filtering element in the axial direction of the shell; the problem that the outer diameters of inner and outer structures of a traditional filtering device are too large is solved, the compactness of the filtering device is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a filtration device and filtration system. Background Technology

[0002] In existing technologies, most filtration devices employ an internal and external structure, resulting in a larger outer diameter and easy water leakage inside the filtration device, leading to lower reliability. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a filtration device that can improve the reliability of the filtration device.

[0004] The second objective of this invention is to provide a filtration system, including the filtration device described in the above embodiments.

[0005] According to a first aspect of the present invention, the filtration device includes: a housing, a first filtration unit, and a second filtration unit. The housing forms a receiving cavity, which has multiple inlets and multiple outlets. The first filtration unit includes a first filter element and a barrel body. The barrel body divides the receiving cavity into a first chamber and a second chamber. The first chamber is located on the side of the second chamber away from the inlets. The first filter element is located within the first chamber. The first filter element and the barrel body define a first flow channel, one end of which communicates with one of the multiple inlets. The second filtration unit is located within the second chamber. The second filtration unit includes a second filter element. The second filter element is located within the second chamber. The second filter element and the housing define a second flow channel. One end of the second flow channel communicates with one of the multiple inlets, and the other end of the second flow channel communicates with one of the multiple outlets. The first flow channel and the second flow channel are independently arranged within the receiving cavity.

[0006] According to the filtration device of this utility model embodiment, by independently setting the first filter element in the barrel, it is convenient to independently set the first filter unit, improve the sealing performance of the first filter unit, reduce the risk of water cross-contamination between the first filter unit and the second filter unit, and improve the reliability of the filtration device. At the same time, by arranging the first filter element and the second filter element along the axial direction of the shell, the internal structure of the filtration device is optimized, solving the problem of the large outer diameter of the internal and external structures of traditional filtration devices, improving the compactness of the filtration device, and reducing production costs.

[0007] In some embodiments, the first filter unit further includes: a first end cap and a central tube, the first end cap being disposed in the first chamber and on the side of the first filter element adjacent to the second filter unit; the central tube being fixedly connected to the first end cap, one end of the central tube communicating with the first chamber, the other end of the central tube passing through the barrel body, and the other end of the first flow channel communicating with one of the plurality of outlets through the central tube.

[0008] In some embodiments, the first end cap and the central tube are integrally formed.

[0009] In some embodiments, the first filter element is wound to form a central flow channel, one end of the central tube extends into the central flow channel, and the central flow channel connects the first flow channel and the central tube.

[0010] In some embodiments, the second filter unit includes: a second end cap and a third end cap, the second end cap being disposed in the second chamber and engaging with one end of the barrel adjacent to the first end cap; the third end cap being disposed on the side of the second end cap away from the first end cap, the third end cap, the second end cap, and the housing defining the second chamber, and the second filter element engaging with the second end cap and the third end cap respectively.

[0011] In some embodiments, at least a portion of the second end cap extends axially toward the third end cap along the housing, the other end of the second end cap mates with the third end cap, the at least portion of the second end cap and the third end cap define a portion of the second flow channel; the at least portion of the second end cap and the central tube define a portion of the first flow channel.

[0012] In some embodiments, the length of the second filter element along the axial direction of the housing is less than the length of the first filter element along the axial direction of the housing, and the central tube cooperates with the second filter element.

[0013] In some embodiments, the first filter element includes at least one of carbon rod, pleated PP, PP cotton, carbon fiber, and ultrafiltration membrane; and / or, the second filter element includes at least one of carbon rod, pleated PP, PP cotton, carbon fiber, and ultrafiltration membrane.

[0014] In some embodiments, a mounting groove is formed at one end of the housing, and the filter device further includes a rotating structure rotatably disposed in the mounting groove, the rotating structure being capable of opening and closing a plurality of the inlets and a plurality of the outlets.

[0015] According to a second aspect of the present invention, the filtration system includes a filtration device and a reverse osmosis device, wherein the filtration device is the same as the one described in the above embodiment; the first chamber and the second chamber of the filtration device are connected through the reverse osmosis device.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a cross-sectional schematic diagram of a filtration device according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the first flow channel according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the second flow channel according to an embodiment of the present utility model;

[0021] Figure 4 yes Figure 1 A magnified schematic diagram of region P in the middle.

[0022] Figure label:

[0023] 100. Filtering device;

[0024] 10. Shell; 11. Inlet; 12. First inlet; 13. Second inlet; 14. Outlet; 15. First outlet; 16. Second outlet; 17. Receiving cavity; 18. First chamber; 19. Second chamber;

[0025] 20. First filter element; 21. Barrel body; 211. Barrel body; 212. Barrel lid; 22. First end cap; 23. Central tube; 24. First flow channel; 25. Fourth end cap; 26. First sealing element; 27. Second sealing element;

[0026] 30. Second filter element; 31. Second flow channel; 32. Second end cap; 321. Mating part; 322. Extension part; 33. Third end cap; 34. Third seal; 35. Fourth seal;

[0027] 40. Rotating structure. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-4The filter device 100 according to an embodiment of the present utility model is described. The filter device 100 includes: a housing 10, a first filter unit, and a second filter unit.

[0029] Specifically, such as Figures 1-3 As shown, the housing 10 forms a receiving cavity 17, which has multiple inlets 11 and multiple outlets 14. The first filtration unit includes a first filter element 20 and a barrel 21. The barrel 21 divides the receiving cavity 17 into a first chamber 18 and a second chamber 19. The first chamber 18 is located on the side of the second chamber 19 away from the inlets 11. The first filter element 20 is located in the first chamber 18. The first filter element 20 and the barrel 21 define a first flow channel 24. One end of the first flow channel 24 is connected to one of the multiple inlets 11. The second filtration unit is located in the second chamber 19. The second filtration unit includes a second filter element 30. The second filter element 30 is located in the second chamber 19. The second filter element 30 and the housing 10 define a second flow channel 31. One end of the second flow channel 31 is connected to one of the multiple inlets 11, and the other end of the second flow channel 31 is connected to one of the multiple outlets 14. The first flow channel 24 and the second flow channel 31 are independently arranged within the receiving cavity 17.

[0030] Both the first and second filter units are located within the housing 10, with the second filter unit located at one end of the first filter unit adjacent to the inlet 11 and outlet 14. Multiple inlets 11 and multiple outlets 14 are shared within the receiving cavity 17 along the axial direction of the housing 10, near one end adjacent to the second filter unit. A barrel 21 is located at the other end of the receiving cavity 17 along the axial direction of the housing 10. A first filter element 20 is independently located within the barrel 21. A second chamber 19 is located adjacent to the inlet 11, and a first chamber 18 is located at the end of the second chamber 19 along the axial direction of the housing 10, away from the inlet 11. The multiple inlets 11 include a first inlet 12 and a second inlet 13, and the multiple outlets 14 include a first outlet 15 and a second outlet 16. The first flow channel 24 is connected to the first inlet 12 and the first chamber 18 at one end. The filter device 100 is adapted to filter fluid. Taking water as an example, the first inlet 12 is adapted to introduce the water to be filtered into the first flow channel 24, and the first outlet 15 is adapted to export the water filtered by the first filter element 20 to the outside of the housing 10. In this application, the filtered water exported to the outside of the housing 10 needs to be filtered by a reverse osmosis device before returning to the filter device 100 for filtration by the second filter element 30. Therefore, the two ends of the second flow channel 31 adjacent to the second inlet 13 and the second outlet 16 are respectively connected to the second inlet 13 and the second outlet 16. The second inlet 13 is adapted to introduce the water filtered by reverse osmosis into the second flow channel 31, which flows into the second chamber 19 and is filtered by the second filter element 30. The second outlet 16 is adapted to export the water filtered by the second filter element 30 to the outside of the housing 10.

[0031] In this application, such as Figure 2 and Figure 3As shown, the water flow direction in the filtration device 100 is as follows: the water to be filtered enters the housing 10 through the first inlet 12 and enters the first chamber 18 through the first flow channel 24. The water filtered by the first filter element 20 flows out from the first outlet 15 to the outside of the housing 10. The water filtered by reverse osmosis enters the housing 10 through the second inlet 13 and enters the second chamber 19 through the second flow channel 31. The water filtered by the second filter element 30 flows through the second flow channel 31 and flows out from the second outlet 16 to the outside of the housing 10.

[0032] According to the embodiment of the present utility model, the filter device 100, by independently setting the first filter element 20 inside the barrel 21, facilitates the independent setting of the first filter unit, improves the sealing performance of the first filter unit, reduces the risk of water cross-contamination between the first filter unit and the second filter unit, and improves the reliability of the filter device 100. At the same time, by arranging the first filter element 20 and the second filter element 30 along the axial direction of the shell 10, the internal structure of the filter device 100 is optimized, solving the problem of the large outer diameter of the internal and external structures of the traditional filter device 100, improving the compactness of the filter device 100, and reducing production costs.

[0033] According to some embodiments of this utility model, such as Figure 1 As shown, the first filter unit further includes: a first end cap 22 and a central tube 23. The first end cap 22 is disposed in the first chamber 18 and on the side of the first filter element 20 adjacent to the second filter unit. The central tube 23 is fixedly connected to the first end cap 22. One end of the central tube 23 is connected to the first chamber 18, and the other end of the central tube 23 passes through the barrel 21. The other end of the first flow channel 24 is connected to one of the multiple outlets 14 through the central tube 23.

[0034] The first end cap 22 is located at one end of the first filter element 20 along the axial direction of the housing 10, adjacent to the second filter element 30. The end of the central tube 23 adjacent to the first end cap 22 is fixedly connected to the first end cap 22, and the other end of the central tube 23 extends along the axial direction of the housing 10 toward the first outlet 15 and communicates with the first outlet 15. That is, the water to be filtered entering from the first inlet 12 flows through the first flow channel 24 to the first chamber 18, is filtered by the first filter element 20 in the first chamber 18, and then flows from the central tube 23 to the first outlet 15.

[0035] Thus, the first outlet 15 and the first chamber 18 are connected by the central pipe 23, which facilitates the flow of filtered water in the first chamber 18 from the central pipe 23 to the first outlet 15, providing a guiding effect for the filtered water, providing a complete circulation loop for the water in the first chamber 18, and improving the reliability of the filtration device 100.

[0036] Optionally, the central tube 23 in this application is not used for the installation of the first filter element 20. The water filtered by the first filter element 20 is collected and flows to the central tube 23 located at the end of the first chamber 18. One end of the central tube 23 is connected to the first chamber 18 during installation, and the other end of the central tube 23 extends toward the first outlet 15 so that the water filtered in the first chamber 18 flows out through the central tube 23, avoiding it from flowing into the second chamber 19, thereby improving the sealing of the filtration between the first chamber 18 and the second chamber 19 and effectively preventing cross-contamination of water.

[0037] Optionally, the first end cap 22 and the first filter element 20 are fixed by adhesive bonding.

[0038] According to some embodiments of this utility model, the first end cap 22 and the central tube 23 are integrally formed. That is, the first end cap 22 and the central tube 23 are manufactured as a whole. Therefore, integrating the central tube 23 onto the first end cap 22 can improve the sealing between the first end cap 22 and the central tube 23, preventing water in the second chamber 19 from entering the first chamber 18 through the gap between the first end cap 22 and the central tube 23, reducing the risk of water leakage, improving the reliability of the filter device 100, and at the same time, improving the structural strength of the first end cap 22 and the central tube 23, increasing production efficiency, and reducing production costs.

[0039] Optionally, a portion of the first end cap 22 is located within the first chamber 18, and a portion of the first end cap 22 extends out of the barrel 21 and communicates with the first outlet 15. The first end cap 22 defines a central tube 23 for communicating the first chamber 18 and the first outlet 15, and the central tube 23 is a part of the first end cap 22.

[0040] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the first filter element 20 is wound to form a central flow channel, and one end of the central tube 23 extends into the central flow channel, which connects the first flow channel 24 and the central tube 23.

[0041] The first filter element 20 is wound around the circumference of the housing 10. The central region of the first filter element 20 is a hollow structure and forms a central flow channel. The central flow channel extends along the axial direction of the housing 10. The end of the central flow channel adjacent to the first end cap 22 along the axial direction of the housing 10 is connected to the central tube 23. The end of the first flow channel 24 away from the first outlet 15 is connected to the central flow channel.

[0042] Therefore, by extending one end of the central tube 23 into the central flow channel, the water filtered by the first filter element 20 can be collected into the central flow channel, flow into the central tube 23 through the central flow channel, and then exit from the first outlet 15 to the outside of the filter device 100, providing a container space and an outlet path for the filtered water, avoiding interference between the filtered water and the water to be filtered in the first flow channel 24, and improving the reliability of the filter device 100.

[0043] According to some embodiments of this utility model, such as Figure 1 As shown, the second filter unit includes a second end cap 32 and a third end cap 33. The second end cap 32 is disposed in the second chamber 19 and is engaged with one end of the barrel 21 adjacent to the first end cap 22. The third end cap 33 is disposed on the side of the second end cap 32 away from the first end cap 22. The third end cap 33, the second end cap 32 and the housing 10 define the second chamber 19. The second filter element 30 is engaged with the second end cap 32 and the third end cap 33 respectively.

[0044] The second end cap 32 is connected to the second filter element 30 along the axial direction of the housing 10 near the end of the first end cap 22, and the second end cap 32 and the barrel 21 along the axial direction of the housing 10 near the end of the first end cap 22 form a fit. The third end cap 33 is located at the other end of the second filter element 30 along the axial direction of the housing 10 away from the first end cap 22, that is, the third end cap 33 is located at the end of the second filter element 30 near the inlet 11 and the outlet 14. The second filter element 30 is fixed to the second end cap 32 and the third end cap 33 by adhesive bonding.

[0045] Therefore, by setting the second end cap 32 and the third end cap 33, it is convenient to fix the second filter element 30, avoid relative movement of the second filter element 30, improve the stability and reliability of the second filter unit, and at the same time, it is convenient to define the second flow channel 31.

[0046] According to some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, at least a portion of the second end cap 32 extends axially toward the third end cap 33 along the housing 10, and the other end of the second end cap 32 engages with the third end cap 33. At least a portion of the second end cap 32 and the third end cap 33 define a portion of the second flow channel 31; at least a portion of the second end cap 32 and the central tube 23 define a portion of the first flow channel 24.

[0047] The second end cap 32 includes a mating portion 321 and an extension portion 322. The extension portion 322 is connected to the mating portion 321, and the mating portion 321 mates with the barrel body 21. The end of the extension portion 322 away from the mating portion 321 extends toward the third end cap 33. The flow channel defined between the extension portion 322 and the second filter element 30 is part of the second flow channel 31, and the flow channel defined between the extension portion 322 and the central tube 23 is part of the first flow channel 24. Part of the first flow channel 24 communicates with the first inlet 12, and part of the second flow channel 31 communicates with the second outlet 16, thus separating the water to be filtered in the first chamber 18 from the water filtered by the second filter element 30, so that they do not affect each other. A through hole is formed in the central area of ​​the second end cap 32 and the third end cap 33, which is suitable for the central tube 23 to pass through.

[0048] Therefore, by engaging with the barrel 21 through the mating part 321 of the second end cap 32, the end cap can be sealed and fixed, improving the sealing performance and reliability of the filter device 100. At least part of the second end cap 32, namely the extension 322, serves as a guide for the central tube. The extension 322 and the central tube 23 define a portion of the first flow channel 24, which facilitates the water to be filtered to enter the first flow channel 24 between the second end cap 32 and the central tube 23 from the first inlet 12 and enter the first chamber 18, providing a flow path for the water to be filtered. At the same time, it avoids mutual interference between the second chamber 19 and the first chamber 18, reducing the risk of cross-contamination.

[0049] According to some embodiments of this utility model, such as Figure 1 As shown, the length of the second filter element 30 along the axial direction of the housing 10 is less than the length of the first filter element 20 along the axial direction of the housing 10, and the central tube 23 is fitted with the second filter element 30.

[0050] The second filter element 30 is disposed adjacent to multiple inlets 11 along the axial direction of the housing 10, while the first filter element 20 is disposed away from the multiple inlets 11 along the axial direction of the housing 10. The central tube 23 is mostly located within the second chamber 19 and fits within the hollow structure formed by the circumferential winding of the second filter element 30. Since the length of the second filter element 30 along the axial direction of the housing 10 is less than the length of the first filter element 20 along the axial direction of the housing 10, the length of the central tube 23 connecting the first chamber 18 and the first outlet 15 is shorter. Therefore, while achieving water outlet from the first chamber 18, the length of the central tube 23 can be reduced, lowering material costs. Simultaneously, the structure of the second chamber 19 is made more compact, reducing the risk of cross-contamination.

[0051] According to some embodiments of the present invention, the first filter element 20 includes at least one of a carbon rod, pleated PP, PP cotton, carbon fiber, and an ultrafiltration membrane.

[0052] Optionally, the second filter element 30 includes at least one of a carbon rod, pleated PP, PP cotton, carbon fiber, and an ultrafiltration membrane.

[0053] Optionally, both the first filter element 20 and the second filter element 30 include at least one of carbon rod, pleated PP, PP cotton, carbon fiber, and ultrafiltration membrane. This improves the filtration capacity of the first filter element 20 and the second filter element 30, enhances their environmental friendliness, extends their service life, and improves the safety and reliability of the filtration device 100.

[0054] In this embodiment, the first filter element 20 includes a carbon rod and a pleated PP, with the pleated PP sleeved on the outer periphery of the carbon rod, and the second filter element 30 includes a carbon rod.

[0055] According to some embodiments of this utility model, such as Figure 1As shown, a mounting groove is formed at one end of the housing 10, and the filter device 100 further includes a rotating structure 40, which is rotatably disposed in the mounting groove. The rotating structure 40 can open and close multiple inlets 11 and multiple outlets 14.

[0056] The housing 10 has a mounting groove formed at one end adjacent to the second filter unit along the axial direction of the housing 10. The mounting groove is suitable for mounting the rotating structure 40, and the rotating structure 40 can rotate relative to the housing 10 in the circumferential direction. When the filter device 100 is working, the rotating structure 40 rotates at a certain angle so that the first inlet 12 and the first outlet 15 are connected to the first flow channel 24 and the central tube 23 respectively, and the second inlet 13 and the second outlet 16 are connected to the two ends of the second flow channel 31 respectively.

[0057] Therefore, by setting the rotating structure 40, it is easy to adjust the opening and closing of the inlet 11 and the outlet 14 according to the needs, thereby improving the ease of use of the filter device 100.

[0058] Optionally, the first filter unit further includes a fourth end cap 25, which is disposed within the first chamber 18 at the end of the first chamber 18 away from the first end cap 22. Specifically, the fourth end cap 25 is located at the end of the first filter element 20 along the axial direction of the housing 10 away from the first end cap 22. The first filter element 20 mates with both the first end cap 22 and the fourth end cap 25. Thus, by providing the fourth end cap 25, the first filter element 20 is easily fixed, while simultaneously preventing water filtered by the first filter element 20 from flowing out from the end of the first filter element 20 along the axial direction of the housing 10 away from the first end cap 22, thereby improving the reliability of the filter device 100.

[0059] According to some embodiments of this utility model, such as Figure 1 As shown, the barrel 21 includes a barrel body 211 and a barrel cover 212. The barrel body 211 has an opening on the side away from the second filter unit along the axial direction of the housing 10. The barrel cover 212 is provided at the opening and is used to open and close the opening.

[0060] The barrel body 211 has an opening at one end adjacent to the fourth end cap 25 along the axial direction of the housing 10. The first filter unit is disposed inside the barrel body 211 through the opening. The barrel cap 212 is disposed at the opening along the axial direction of the housing 10, and the shape and size of the barrel cap 212 are adapted to the opening. Optionally, the barrel cap 212 is detachably connected to the barrel body 211 to facilitate the replacement of the first filter element 20 in the first chamber 18 and the cleaning of the inside of the first chamber 18.

[0061] Therefore, by placing the lid 212 at the opening, it is convenient to open and close the opening, facilitates the installation and disassembly of the first filter unit, improves the assembly efficiency of the filter device 100, and at the same time improves the sealing performance of the barrel 21 and enhances the independence of the first filter unit.

[0062] Optionally, the first filter unit further includes a first seal 26 and a second seal 27. The first seal 26 is disposed between the second end cap 32 and the end of the barrel body 211 adjacent to the second chamber 19 along the axial direction of the housing 10. The second seal 27 is disposed between the end of the central tube 23 adjacent to the first outlet 15 along the axial direction of the housing 10 and the housing 10. This can effectively improve the sealing performance of the first chamber 18 and reduce the risk of water leakage.

[0063] Optionally, such as Figure 4 As shown, the second filter unit also includes a third seal 34 and a fourth seal 35. The third seal 34 is located between the third end cap 33 and the housing 10, and the fourth seal 35 is located between the end of the second end cap 32 that mates with the third end cap 33 and the housing 10. This can effectively improve the sealing performance of the second chamber 19 and reduce the risk of water leakage.

[0064] According to a second aspect embodiment of the present invention, the filtration system includes a filtration device 100 and a reverse osmosis device, wherein the filtration device 100 is the same as the filtration device 100 in the above embodiment; the first chamber 18 and the second chamber 19 of the filtration device 100 are connected through the reverse osmosis device.

[0065] The first outlet 15 is connected to the inlet of the reverse osmosis device, and the outlet of the reverse osmosis device is connected to the second inlet 13. The water to be filtered enters the housing 10 through the first inlet 12 and enters the first chamber 18 through the first flow channel 24. The water filtered by the first filter element 20 is collected in the central flow channel and flows out from the first outlet 15. Then it flows into the reverse osmosis device. The water filtered by reverse osmosis enters the housing 10 through the second inlet 13 and enters the second chamber 19 through the second flow channel 31. The water filtered by the second filter element 30 flows through the second flow channel 31 and flows out from the second outlet 16 to the outside of the housing 10. This cycle can realize the multi-stage filtration of the water to be filtered by the filtration system.

[0066] Therefore, by setting up the filter device 100 and the reverse osmosis device, multi-stage filtration of the water to be filtered can be achieved, thereby improving the working efficiency and reliability of the filtration system.

[0067] Optionally, the reverse osmosis unit is an RO (Reverse Osmosis) machine.

[0068] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0069] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filtration device (100), characterized in that, include: The housing (10) has a receiving cavity (17) having a plurality of inlets (11) and a plurality of outlets (14). A first filtration unit, comprising a first filter element (20) and a barrel (21), wherein the barrel (21) divides the receiving cavity (17) into a first chamber (18) and a second chamber (19), wherein the first chamber (18) is located on the side of the second chamber (19) away from the inlet (11), the first filter element (20) is located in the first chamber (18), and the first filter element (20) and the barrel (21) define a first flow channel (24), one end of which is connected to one of the plurality of inlets (11); The second filter unit is disposed in the second chamber (19). The second filter unit includes a second filter element (30) disposed in the second chamber (19). The second filter element (30) and the housing (10) define a second flow channel (31). One end of the second flow channel (31) is connected to one of the plurality of inlets (11), and the other end of the second flow channel (31) is connected to one of the plurality of outlets (14). The first flow channel (24) and the second flow channel (31) are independently disposed in the receiving cavity (17).

2. The filtration device (100) according to claim 1, characterized in that, The first filtering unit further includes: The first end cap (22) is disposed in the first chamber (18) and on the side of the first filter element (20) adjacent to the second filter unit; The central tube (23) is fixedly connected to the first end cap (22). One end of the central tube (23) is connected to the first chamber (18), and the other end of the central tube (23) passes through the barrel body (21). The other end of the first flow channel (24) is connected to one of the multiple outlets (14) through the central tube (23).

3. The filtration device (100) according to claim 2, characterized in that, The first end cap (22) and the central tube (23) are integrally formed parts.

4. The filtration device (100) according to claim 2, characterized in that, The first filter element (20) is wound to form a central flow channel, and one end of the central tube (23) extends into the central flow channel, and the central flow channel connects the first flow channel (24) and the central tube (23).

5. The filtration device (100) according to claim 2, characterized in that, The second filtering unit includes: The second end cap (32) is located in the second chamber (19) and is fitted to the end of the barrel body (21) adjacent to the first end cap (22). The third end cap (33) is located on the side of the second end cap (32) away from the first end cap (22). The third end cap (33), the second end cap (32) and the housing (10) define the second chamber (19). The second filter element (30) is engaged with the second end cap (32) and the third end cap (33) respectively.

6. The filtration device (100) according to claim 5, characterized in that, At least a portion of the second end cap (32) extends axially toward the third end cap (33) along the housing (10), and the other end of the second end cap (32) engages with the third end cap (33). The at least portion of the second end cap (32) and the third end cap (33) define a portion of the second flow channel (31). The at least portion of the second end cap (32) and the central tube (23) define a portion of the first flow channel (24).

7. The filtration device (100) according to claim 2, characterized in that, The length of the second filter element (30) along the axial direction of the housing (10) is less than the length of the first filter element (20) along the axial direction of the housing (10), and the central tube (23) cooperates with the second filter element (30).

8. The filtration device (100) according to claim 1, characterized in that, The first filter element (20) includes at least one of carbon rod, pleated PP, PP cotton, carbon fiber, and ultrafiltration membrane; and / or, The second filter element (30) includes at least one of carbon rod, pleated PP, PP cotton, carbon fiber and ultrafiltration membrane.

9. The filtration device (100) according to any one of claims 1-8, characterized in that, One end of the housing (10) is formed with a mounting groove, and the filter device (100) further includes: A rotating structure (40) is rotatably disposed in the mounting groove, and the rotating structure (40) can open and close a plurality of the inlets (11) and a plurality of the outlets (14).

10. A filtration system, characterized in that, include: A filter device (100), wherein the filter device (100) is the filter device (100) according to any one of claims 1-9. The reverse osmosis device, wherein the first chamber (18) and the second chamber (19) of the filter device (100) are connected through the reverse osmosis device.

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