Filter element assembly convenient to disassemble and assemble

Abstract

The utility model provides a filter element assembly convenient to disassemble and assemble, which relates to filtering equipment and comprises a base and a filtering assembly, a first cavity, a liquid inlet pipe and a liquid outlet pipe are arranged on the base, and the liquid inlet pipe and the liquid outlet pipe are communicated with the first cavity; the filter assembly comprises a filter cartridge and a fixing piece, the filter cartridge is arranged on the fixing piece, the fixing piece is arranged outside the base, and the filter cartridge is fixed in the first cavity of the base through the fixing piece; the side wall of the filter cartridge comprises a binding surface and a filter surface, and the binding surface is provided with a liquid inlet used for being communicated with a liquid inlet pipe; after the fixing piece is connected with the base, the binding face is attached to the inner wall of the base, and a second cavity is formed between the filtering face and the inner wall of the base. The filter assembly and the base are separately designed, so that the filter cartridge does not need to be directly mounted in the base, but is connected through the fixing piece, and when the filter element is replaced or cleaned, the filter cartridge can be taken out of or mounted in the first cavity of the base only by operating the fixing piece, so that the disassembly and assembly process is simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to filtering equipment, in particular to a filter element component which is easy to assemble and disassemble. Background Art

[0002] In some equipment, the installation space for the filter element may be limited, making it difficult to reach in or operate tools during disassembly and assembly. This space limitation not only increases the difficulty of disassembly and assembly, but may also limit the types of tools that can be used. For filter elements that have not been replaced for a long time or have been over-tightened during installation, the filter element and the base will be too tightly engaged, and conventional tools may not be able to apply force to loosen them smoothly. Utility Model Content

[0003] The purpose of the utility model is to provide a filter element assembly that is easy to disassemble and assemble, and the technical problem to be solved is to improve the convenience of disassembling and assembling the filter element.

[0004] The utility model is achieved through the following technical solutions:

[0005] A filter element assembly that is easy to disassemble and assemble comprises a base and a filter assembly, wherein the base is provided with a first cavity and a liquid inlet pipe and a liquid outlet pipe connected to the first cavity;

[0006] The filter assembly includes a filter cartridge and a fixing member, wherein the filter cartridge is arranged on the fixing member, and the fixing member is arranged outside the base, and the filter cartridge is fixed in the first cavity of the base through the fixing member;

[0007] The side wall of the filter cartridge includes a fitting surface and a filtering surface, and the fitting surface is provided with a liquid inlet for connecting to the liquid inlet pipe; when the fixing member is connected to the base, the fitting surface is in contact with the inner wall of the base, and a second cavity is formed between the filtering surface and the inner wall of the base.

[0008] The filter assembly is designed to be separated from the base, so that the filter cartridge does not need to be directly installed inside the base, but is connected through a fixing part. In this way, when replacing or cleaning the filter element, the filter cartridge can be removed or installed from the first cavity of the base by simply operating the fixing part, which simplifies the disassembly and assembly process and improves work efficiency.

[0009] The side wall of the above-mentioned filter cartridge is divided into a fitting surface and a filtering surface. The fitting surface is provided with a liquid inlet connected to the liquid inlet pipe. When the fixing piece is connected to the base, the fitting surface is close to the inner wall of the base, which not only ensures the smooth flow path of the liquid, but also is conducive to the stable installation of the filter element assembly as a whole. At the same time, it also provides convenient conditions for disassembly and assembly, avoiding the installation difficulties caused by the difficulty in aligning the position of the liquid inlet; the second cavity formed by the filtering surface and the inner wall of the base serves as a filtering area, which is independent of the connection part between the fixing piece and the base, which is conducive to the efficient filtering work, and will not affect the disassembly and assembly of the filter element, so that the two do not interfere with each other, thereby improving the convenience of use and maintenance of the entire filter element assembly.

[0010] Furthermore, the fixing member includes a support plate and a fixing plate, and the support plate is provided with a first opening communicating with the filter cartridge;

[0011] The support plate is in contact with the outer wall of the base;

[0012] The fixing plate is stacked on the supporting plate to block the first opening;

[0013] The fixing plate is detachably connected to the base.

[0014] The first opening is designed to facilitate cleaning of impurities. After removing the retaining plate, impurities within the filter cartridge can be accessed through the first opening, greatly simplifying the cleaning process and improving cleaning efficiency. Users can quickly and easily clean accumulated impurities within the filter cartridge without completely disassembling the filter assembly.

[0015] The support plate contacts the outer wall of the base, maintaining the stability of the filter assembly in the installed state and also clearly defining the position of the first opening, ensuring effective communication with the interior of the filter cartridge. The fixed plate, stacked on the support plate, not only seals the first opening to prevent leakage of unfiltered liquid, but also ensures quick cleaning after removal of the fixed plate.

[0016] The detachable connection between the fixing plate and the base mentioned above makes it possible to immediately open the first opening and remove the filter cartridge by simply releasing the connection between the fixing plate and the base when impurities need to be cleaned, thereby achieving rapid cleaning and maintenance of the interior of the filter cartridge, greatly reducing downtime and improving the working efficiency of the equipment.

[0017] Furthermore, a first gripping member is provided on the fixing plate.

[0018] The first gripping member provides a fulcrum for the operator, so that when removing or installing the fixed plate, the operator can directly hold the gripping member to operate, avoiding direct contact with the fixed plate surface which may be smooth or difficult to grasp, thereby improving the safety and convenience of the disassembly and assembly process.

[0019] In situations where greater disassembly and assembly force is required, such as when the fixing plate and the base are tightly connected after prolonged use, the first gripping piece can help disperse the force, allowing the operator to complete the disassembly and assembly task more easily and reducing labor intensity.

[0020] Furthermore, a second gripping piece is provided on the support plate.

[0021] In addition to the first grip on the fixed plate mentioned above, the second grip on the support plate provides the operator with another stable gripping position. Especially when disassembling and assembling the entire filter assembly, the two grips can work together to make the disassembly and assembly process safer and more stable, avoiding accidental sliding or damage due to unstable grip.

[0022] When installing or adjusting the position of the filter assembly, the second grip can be used to accurately control the angle and position of the support plate and filter cartridge to ensure that the liquid inlet on the filter cartridge is accurately aligned with the liquid inlet pipe on the base, thereby ensuring the filtering effect and sealing performance.

[0023] Furthermore, two second gripping members are provided, and the two second gripping members are symmetrical with respect to the mid-vertical plane of the support plate.

[0024] The two second grips are symmetrically arranged about the mid-vertical plane of the support plate, which can evenly disperse the force during the disassembly and assembly process, avoiding excessive stress on a single grip, thereby protecting the support plate and its connecting structure and extending the service life of the filter element assembly; the double grip design allows the operator to grasp with both hands at the same time, which can better ensure the stability of the support plate and filter cartridge during the disassembly and assembly process compared to a single grip, avoiding shaking or deviation, and ensuring accurate assembly between the filter element assembly and the base.

[0025] Furthermore, the extending direction of any of the second gripping members is the same as the extending direction of the liquid inlet tube.

[0026] The extension direction of the above-mentioned second grip provides the operator with an intuitive reference and serves as an operation guide; when the filter element assembly needs to be disassembled or adjusted, the position of the second grip can be easily found according to the direction of the liquid inlet pipe, which is conducive to fast and accurate operation and improved work efficiency; when the equipment is in working condition, the liquid inlet pipe is usually visible, so the second grip with the same direction can also serve as a potential visual prompt to remind the operator of its position and function, so that the corresponding gripping position can be found more quickly when maintaining or replacing the filter element.

[0027] Furthermore, the filter cartridge is offset in a direction parallel to the vertical midplane of the support plate toward the liquid inlet pipe, and the center axis of the filter cartridge deviates from the vertical midplane of the support plate.

[0028] Since the above-mentioned filter cartridge is not strictly placed in the center, this offset design helps to provide more operating space when disassembling and installing the filter element, especially when the filter cartridge needs to be removed or installed from one side of the support plate, which can reduce interference and improve the convenience of maintenance and replacement.

[0029] Furthermore, a first groove is provided on the lower end surface of the support plate, a first sealing ring is provided in the first groove, and the first sealing ring contacts the outer wall of the base.

[0030] The above-mentioned first sealing ring is in close contact with the outer wall of the base, which can not only effectively prevent the liquid from leaking from the gap between the support plate and the base during the filtration process, thereby improving the sealing and filtration effect of the entire filter element assembly, but also prevent unfiltered liquid or impurities from entering the non-filtering area inside the filter element assembly, thereby maintaining the cleanliness of the filter element, extending the service life of the filter element, and avoiding equipment failure or pollution of downstream process links due to impurity leakage.

[0031] The first sealing ring can also absorb some of the tiny vibrations between the support plate and the base caused by liquid flow or equipment operation, reduce direct friction and wear between metals, reduce noise, and also help to improve the service life and stability of the equipment.

[0032] Furthermore, a second groove is provided on the lower end surface of the fixing plate, a second sealing ring is provided in the second groove, and the second sealing ring contacts the upper end surface of the supporting plate.

[0033] The above-mentioned second sealing ring contacts the upper end surface of the support plate, forming another sealing line of defense for the liquid flow path in the filter cartridge, effectively preventing liquid leakage and external contaminants from entering the filter element assembly through the gap between the fixed plate and the support plate, ensuring the safety of equipment operation and the reliability of the filtering effect.

[0034] The second sealing ring not only plays a sealing role, but also provides a buffer when the fixing plate presses the support plate, thereby reducing deformation or damage of the support plate caused by over-tightening and enhancing the overall structural stability of the filter element assembly.

[0035] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0036] The filter assembly is designed to be separated from the base, so that the filter cartridge does not need to be directly installed inside the base, but is connected through a fixing part. In this way, when replacing or cleaning the filter element, the filter cartridge can be removed or installed from the first cavity of the base by simply operating the fixing part, which simplifies the disassembly and assembly process and improves work efficiency.

[0037] The side wall of the above-mentioned filter cartridge is divided into a fitting surface and a filtering surface. The fitting surface is provided with a liquid inlet connected to the liquid inlet pipe. When the fixing piece is connected to the base, the fitting surface is close to the inner wall of the base, which not only ensures the smooth flow path of the liquid, but also is conducive to the stable installation of the filter element assembly as a whole. At the same time, it also provides convenient conditions for disassembly and assembly, avoiding the installation difficulties caused by the difficulty in aligning the position of the liquid inlet; the second cavity formed by the filtering surface and the inner wall of the base serves as a filtering area, which is independent of the connection part between the fixing piece and the base, which is conducive to the efficient filtering work, and will not affect the disassembly and assembly of the filter element, so that the two do not interfere with each other, thereby improving the convenience of use and maintenance of the entire filter element assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0039] Figure 1 It is a cross-sectional view of the overall structure of the filter element assembly;

[0040] Figure 2 Schematic diagram of the overall structure of the filter element assembly;

[0041] Figure 3 is a cross-sectional view of the base;

[0042] Figure 4 is a top view of the base;

[0043] Figure 5 Schematic diagram of the structure after the support plate and filter cartridge are connected.

[0044] Markings and corresponding parts names in the accompanying drawings:

[0045] 10. Base; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. First cavity; 14. Second cavity; 20. Fixing piece; 21. Support plate; 22. Fixing plate; 23. First opening; 31. First sealing ring; 32. Second sealing ring; 40. Filter cartridge; 41. Liquid inlet; 42. Fitting surface; 43. Filtering surface; 51. First gripping piece; 52. Second gripping piece. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0047] Example 1

[0048] Combine Figures 1 to 5 , this embodiment 1 provides a filter element assembly that is easy to disassemble and assemble, including a base 10 and a filter assembly, wherein the base 10 is provided with a first cavity 13 and a liquid inlet pipe 11 and a liquid outlet pipe 12 that are connected to the first cavity 13;

[0049] The filter assembly includes a filter cartridge 40 and a fixing member 20. The filter cartridge 40 is disposed on the fixing member 20 and can be fixed to the fixing member 20 by welding. The fixing member 20 is disposed outside the base 10 and is fixed to the first cavity 13 of the base 10 through the fixing member 20.

[0050] The side wall of the filter cartridge 40 includes a fitting surface 42 and a filtering surface 43. The fitting surface 42 is provided with a liquid inlet 41 for connecting to the liquid inlet pipe 11. When the fixing member 20 is connected to the base 10, the fitting surface 42 is in contact with the inner wall of the base 10, and a second cavity 14 is formed between the filtering surface 43 and the inner wall of the base 10. The filtering surface 43 is provided with an abutment block, which abuts against the inner wall of the base 10 (such as Figure 1 As shown), it avoids the problem that the fluid velocity at the liquid inlet 41 is too fast, causing the filter cartridge 40 to shift.

[0051] The above-mentioned filter assembly is designed to be separated from the base 10, so that the filter cartridge 40 does not need to be directly installed inside the base 10, but is connected through the fixing part 20. In this way, when replacing or cleaning the filter element, it is only necessary to operate the fixing part 20 to remove or install the filter cartridge 40 from the first cavity 13 of the base 10, which simplifies the disassembly and assembly process and improves work efficiency.

[0052] The side wall of the above-mentioned filter cartridge 40 is divided into a fitting surface 42 and a filtering surface 43. The fitting surface 42 is provided with a liquid inlet 41 connected to the liquid inlet pipe 11. When the fixing part 20 is connected to the base 10, the fitting surface 42 is close to the inner wall of the base 10, which not only ensures the smooth flow path of the liquid, but also is conducive to the stable installation of the filter element assembly as a whole. At the same time, it also provides convenient conditions for disassembly and assembly, avoiding the installation difficulties caused by the difficulty in aligning the position of the liquid inlet 41; the second cavity 14 formed by the filtering surface 43 and the inner wall of the base 10 serves as a filtering area, which is independent of the connection part between the fixing part 20 and the base 10, which is conducive to the efficient filtering work and will not affect the disassembly and assembly of the filter element, so that the two do not interfere with each other, thereby improving the convenience of use and maintenance of the entire filter element assembly.

[0053] The above-mentioned fixing part 20 serves as a medium for connecting the base 10 and the filter cartridge 40. Its structural design enables the filter cartridge 40 to be quickly and accurately positioned and fixed in the first cavity 13, while ensuring that the fitting surface 42 is tightly fitted with the inner wall of the base 10, thereby enhancing the sealing and stability, and also facilitating the user's disassembly and assembly work in actual operation.

[0054] In a specific embodiment, the fixing member 20 includes a support plate 21 and a fixing plate 22 . The support plate 21 is provided with a first opening 23 communicating with the filter cartridge 40 .

[0055] The support plate 21 is in contact with the outer wall of the base 10;

[0056] The fixing plate 22 is stacked on the supporting plate 21 to block the first opening 23;

[0057] The fixing plate 22 is detachably connected to the base 10 , and the detachable connection can be achieved by bolt connection.

[0058] When the above-mentioned fixed plate 22 is not connected to the base 10, the radial position of the liquid inlet 41 can be adjusted by rotating the support plate 21, and the axial position of the liquid inlet 41 can be adjusted by moving the support plate 21 up and down, so that the liquid inlet 41 is aligned with the liquid inlet pipe 11; when the above-mentioned fixed plate 22 is connected to the base 10, the support plate 21 is clamped by the fixed plate 22 and the base 10, so that the support plate 21 is locked.

[0059] The first opening 23 is provided to facilitate cleaning of impurities. After removing the retaining plate 22, impurities within the filter cartridge 40 can be accessed through the first opening 23, greatly simplifying the cleaning process and improving cleaning efficiency. Users can quickly and easily clean accumulated impurities within the filter cartridge 40 without completely disassembling the filter assembly.

[0060] The contact between the support plate 21 and the outer wall of the base 10 maintains the stability of the filter assembly in the installed state, and also clarifies the position of the first opening 23, ensuring effective communication with the interior of the filter cartridge 40. The fixing plate 22 is stacked on the support plate 21, which not only blocks the first opening 23 to prevent leakage of unfiltered liquid, but also ensures that cleaning can be carried out quickly after the fixing plate 22 is removed.

[0061] The detachable connection between the fixing plate 22 and the base 10 mentioned above makes it possible to immediately open the first opening 23 and remove the filter cartridge 40 by simply releasing the connection between the fixing plate 22 and the base 10 when impurities need to be cleaned, thereby achieving rapid cleaning and maintenance of the interior of the filter cartridge 40, greatly reducing downtime and improving the working efficiency of the equipment.

[0062] In a specific embodiment, the filter cartridge 40 is parallel to the vertical plane of the support plate 21 and is offset in the direction of the liquid inlet pipe 11. The center axis of the filter cartridge 40 deviates from the vertical plane of the support plate 21 (the vertical plane of the support plate 21 and the center axis of the filter cartridge 40 are as shown in FIG. Figure 5 shown).

[0063] Since the above-mentioned filter cartridge 40 is not strictly placed in the center, this offset design helps to provide more operating space when disassembling and installing the filter element, especially when the filter cartridge 40 needs to be removed or installed from one side of the support plate 21, it can reduce interference and improve the convenience of maintenance and replacement.

[0064] In some compact designs, the offset design of the filter cartridge 40 can cleverly avoid spatial conflicts with other components, thereby maximizing the utilization of the internal space of the equipment and making the layout of the entire filter element assembly more reasonable and compact.

[0065] Example 2

[0066] Combine Figure 1 and Figure 2 On the basis of Example 1, a first gripping member 51 is provided on the fixing plate 22 .

[0067] The first gripping member 51 provides a fulcrum for the operator, so that when removing or installing the fixing plate 22, the operator can directly hold the gripping member to operate, avoiding direct contact with the surface of the fixing plate 22 which may be smooth or difficult to grasp, thereby improving the safety and convenience of the disassembly and assembly process.

[0068] In situations where a greater disassembly or assembly force is required, such as when the fixing plate 22 is tightly connected to the base 10 after prolonged use, the first gripping member 51 can help disperse the force, allowing the operator to complete the disassembly or assembly task more easily and reducing labor intensity.

[0069] Example 3

[0070] Combine Figure 1 、 Figure 2 and Figure 5 Based on any of the above embodiments, a second gripping member 52 is provided on the support plate 21 .

[0071] In addition to the first gripping piece 51 on the above-mentioned fixed plate 22, the second gripping piece 52 on the support plate 21 provides the operator with another stable gripping position. Especially when disassembling and assembling the entire filter assembly, the two gripping pieces can work together to make the disassembly and assembly process safer and more stable, avoiding accidental sliding or damage due to unstable grip.

[0072] When installing or adjusting the position of the filter assembly, the second gripping member 52 can be used to precisely control the angle and position of the support plate 21 and the filter cartridge 40 to ensure that the liquid inlet 41 on the filter cartridge 40 is accurately aligned with the liquid inlet pipe 11 on the base 10, thereby ensuring the filtering effect and sealing performance.

[0073] Example 4

[0074] Combine Figure 1 、 Figure 2 and Figure 5 On the basis of Example 3, two second gripping members 52 are provided, and the two second gripping members 52 are symmetrical about the vertical midplane of the support plate 21 .

[0075] The two second grips 52 are symmetrically arranged about the mid-vertical plane of the support plate 21, which can evenly disperse the force during the disassembly and assembly process, avoiding excessive stress on a single grip, thereby protecting the support plate 21 and its connecting structure and extending the service life of the filter element assembly; the double grip design allows the operator to grasp with both hands at the same time, which can better ensure the stability of the support plate 21 and the filter cartridge 40 during the disassembly and assembly process compared to a single grip, avoiding shaking or deviation, and ensuring accurate assembly between the filter element assembly and the base 10.

[0076] Regardless of whether the operator is left-handed or right-handed, he or she can easily find a suitable grip position, which improves operating comfort and work efficiency. At the same time, the symmetrical design is also conducive to coordinated movements when multiple people collaborate on disassembly and assembly.

[0077] Combine Figure 1 In a specific embodiment, the extending direction of any of the second gripping members 52 is the same as the extending direction of the liquid inlet tube 11 .

[0078] The extension direction of the above-mentioned second gripping piece 52 provides the operator with an intuitive reference and serves as an operation guide; when the filter element assembly needs to be disassembled or adjusted, the position of the second gripping piece 52 can be easily found according to the direction of the liquid inlet pipe 11, which is conducive to fast and accurate operation and improved work efficiency; when the equipment is in working condition, the liquid inlet pipe 11 is usually visible, then the second gripping piece 52 with the same direction can also serve as a potential visual prompt to remind the operator of its position and function, so that the corresponding gripping position can be found more quickly when maintaining or replacing the filter element.

[0079] During the disassembly and assembly process, since the second gripping piece 52 is in the same direction as the liquid inlet pipe 11, the operator can use the force line in the direction of the liquid inlet pipe 11 to grip and operate more naturally and smoothly, reducing the waste of force and potential component damage risks caused by improper operation.

[0080] Considering the effective use of the internal space of the equipment, the second gripping member 52 and the liquid inlet pipe 11 are arranged in the same direction so that the second gripping member 52 does not interfere with the operation of the liquid inlet pipe 11 and other components as much as possible, and does not affect the normal installation and removal of the filter element assembly.

[0081] Example 5

[0082] Combine Figure 1 and Figure 2 On the basis of any of the above embodiments, a first groove is provided on the lower end surface of the support plate 21 , and a first sealing ring 31 is provided in the first groove. The first sealing ring 31 contacts the outer wall of the base 10 .

[0083] The above-mentioned first sealing ring 31 is in close contact with the outer wall of the base 10, which can not only effectively prevent the liquid from leaking from the gap between the support plate 21 and the base 10 during the filtration process, thereby improving the sealing and filtration effect of the entire filter element assembly, but also prevent unfiltered liquid or impurities from entering the non-filtering area inside the filter element assembly, thereby maintaining the cleanliness of the filter element, extending the service life of the filter element, and avoiding equipment failure or pollution of downstream process links due to impurity leakage.

[0084] The first sealing ring 31 can also absorb some of the tiny vibrations between the support plate 21 and the base 10 caused by liquid flow or equipment operation, reduce direct friction and wear between metals, reduce noise, and also help to improve the service life and stability of the equipment.

[0085] In a specific embodiment, a second groove is provided on the lower end surface of the fixing plate 22 . A second sealing ring 32 is provided in the second groove. The second sealing ring 32 contacts the upper end surface of the supporting plate 21 .

[0086] The above-mentioned second sealing ring 32 contacts the upper end surface of the support plate 21, forming another sealing line of defense for the liquid flow path in the filter cartridge 40, effectively preventing liquid leakage and external pollutants from entering the filter element assembly through the gap between the fixed plate 22 and the support plate 21, ensuring the safety of equipment operation and the reliability of the filtering effect.

[0087] The second sealing ring 32 not only plays a sealing role, but also provides a buffer when the fixing plate 22 presses the support plate 21, thereby reducing deformation or damage of the support plate 21 caused by over-tightening and enhancing the overall structural stability of the filter element assembly.

[0088] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A filter element assembly that is easy to disassemble and assemble, characterized in that: It comprises a base (10) and a filter assembly, wherein the base (10) is provided with a first cavity (13) and a liquid inlet pipe (11) and a liquid outlet pipe (12) which are in communication with the first cavity (13); The filter assembly comprises a filter cartridge (40) and a fixing member (20), wherein the filter cartridge (40) is arranged on the fixing member (20), and the fixing member (20) is arranged outside the base (10), and the filter cartridge (40) is fixed in the first cavity (13) of the base (10) by the fixing member (20); The side wall of the filter cartridge (40) comprises a fitting surface (42) and a filtering surface (43); the fitting surface (42) is provided with a liquid inlet (41) for communicating with the liquid inlet pipe (11); when the fixing member (20) is connected to the base (10), the fitting surface (42) is in contact with the inner wall of the base (10), and a second cavity (14) is formed between the filtering surface (43) and the inner wall of the base (10).

2. The filter element assembly that is easy to disassemble and assemble according to claim 1, characterized in that: The fixing member (20) comprises a supporting plate (21) and a fixing plate (22); the supporting plate (21) is provided with a first opening (23) communicating with the filter cartridge (40); The support plate (21) is in contact with the outer wall of the base (10); The fixing plate (22) is stacked on the supporting plate (21) and is used to block the first opening (23); The fixing plate (22) is detachably connected to the base (10).

3. The filter element assembly that is easy to disassemble and assemble according to claim 2, characterized in that: The fixing plate (22) is provided with a first holding member (51).

4. A filter element assembly that is easy to disassemble and assemble according to claim 2 or 3, characterized in that: A second gripping member (52) is provided on the support plate (21).

5. The filter element assembly that is easy to disassemble and assemble according to claim 4, characterized in that: Two second gripping members (52) are provided, and the two second gripping members (52) are symmetrical with respect to the mid-vertical plane of the support plate (21).

6. The filter element assembly that is easy to disassemble and assemble according to claim 5, characterized in that: The extending direction of any one of the second gripping members (52) is the same as the extending direction of the liquid inlet pipe (11).

7. The filter element assembly that is easy to disassemble and assemble according to claim 2, characterized in that: The filter cartridge (40) is offset in a direction parallel to the vertical plane of the support plate (21) toward the liquid inlet pipe (11), and the center axis of the filter cartridge (40) deviates from the vertical plane of the support plate (21).

8. The filter element assembly that is easy to disassemble and assemble according to claim 2, characterized in that: The lower end surface of the support plate (21) is provided with a first groove, a first sealing ring (31) is provided in the first groove, and the first sealing ring (31) is in contact with the outer wall of the base (10).

9. The filter element assembly that is easy to disassemble and assemble according to claim 8, characterized in that: The lower end surface of the fixing plate (22) is provided with a second groove, and a second sealing ring (32) is provided in the second groove. The second sealing ring (32) is in contact with the upper end surface of the supporting plate (21).

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