Replacement structure of filter element assembly with rotary water stopping function

Abstract

The utility model relates to a replacement structure of a filter element assembly with a rotary water stopping function. The technical problem that an existing filtering device is low in filter element replacement efficiency is solved. Comprising a filter element body with a plurality of filter element holes in one end, filter element connectors are arranged in the filter element holes respectively, one end of the filter element body is connected with a filter element base through a rotary positioning structure, filter element water stopping assemblies are arranged in the filter element connectors, a plurality of water inlet and outlet holes are formed in the filter element base, and a rotary sealing seat is rotationally arranged in the filter element base. A plurality of rotary joints are arranged in the rotary sealing seat, a rotary joint water stop assembly abutting against the filter element water stop assembly is arranged in one of the rotary joints, and a sealing assembly is arranged between the rotary sealing seat and the filter element base. The device has the advantages that the circumferential rotation limiting assembly can facilitate sealing and water stopping of the rotary sealing seat and the water inlet and outlet hole, the water stopping efficiency is improved, and the production cost is reduced. The sealing effect when the rotary sealing seat and the filter element base are rotationally sealed can be improved through the sealing assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering equipment, and particularly relates to a replacement structure of a filter element assembly with a rotary water stop function. Background Art

[0002] With the continuous improvement of people's living standards, as one of the important equipment to improve the quality of life in daily life, the requirements for filtering equipment are also getting higher and higher. At present, most of the existing filtering equipment filters through filter elements. However, the installation of the filter elements of the existing filtering equipment is too complex, resulting in inconvenience for users to replace the filter elements during long-term use, low filter element replacement efficiency, and affecting the user experience. Moreover, the existing filtering equipment needs to stop water during the loading and unloading of the filter elements. However, the existing water stop structure of the filtering equipment is too complex and the water stop cost is too high. Summary of the Invention

[0003] The purpose of the utility model is to solve the above problems and provide a replacement structure of a filter element assembly with a rotary water stop function.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A replacement structure of a filter element assembly with a rotary water stop function includes a filter element main body with a plurality of filter element holes at one end. Filter element joints are respectively arranged in the filter element holes. One end of the filter element main body with the filter element holes is connected with a filter element base through a rotary positioning structure. A filter element water stop assembly is arranged in the filter element joint. A plurality of water inlet and outlet holes are arranged on the filter element base. A rotary seal seat is rotatably arranged on the inner circumference of the filter element base. A plurality of rotary joints are arranged in the rotary seal seat, which are respectively inserted into the filter element holes in one-to-one correspondence and are respectively communicated with the water inlet and outlet holes in one-to-one correspondence. At least one of the plurality of rotary joints is provided with a rotary joint water stop assembly that abuts against the filter element water stop assembly. A sealing assembly is arranged between the rotary seal seat and the filter element base, which can seal the rotary joint without the rotary joint water stop assembly and the water inlet and outlet holes when the rotary seal seat rotates circumferentially relative to the filter element base. The sealing assembly can ensure the sealing effect between the rotary seal seat and the filter element base, improve the water stop efficiency, and reduce the water stop cost.

[0005] In the above replacement structure of a filter element assembly with a rotary water stop function, the filter element main body, the rotary seal seat and the filter element base are coaxially arranged respectively. One end of the filter element main body has a reduced opening-shaped installation part. The filter element holes are respectively arranged on the end face of the installation part, and the rotary positioning structure is arranged between the installation part and the filter element base. The rotary positioning structure can facilitate the connection between the installation part and the filter element base, and improve the connection efficiency and disassembly efficiency.

[0006] In the above replacement structure of a filter element assembly with a rotary water stop function, the numbers of the filter element holes, rotary joints, and water inlet and outlet holes are all three. One of the three filter element holes is arranged at the center of the filter element body, one of the three rotary joints is arranged at the center of the rotary seal seat, and one of the three water inlet and outlet holes is arranged at the center of the filter element base. The rotary joint arranged at the center is inserted into the filter element hole arranged at the center, and the water outlet hole is communicated with the rotary joint arranged at the center to ensure the water inlet and outlet of the filter element body and the filtration effect.

[0007] In the above replacement structure of a filter element assembly with a rotary water stop function, the rotary joint water stop assembly is arranged in the rotary joint located at the center of the rotary seal seat. One end of the rotary joint water stop assembly extends into the filter element hole located at the center of the filter element body and the other end extends into the water inlet and outlet hole located at the center of the filter element base. The rotary joint can be stopped from leaking water through the rotary joint water stop assembly, and when the rotary joint water stop assembly abuts against the filter element water stop assembly, the rotary joint can be communicated with the filter element joint.

[0008] In the above replacement structure of a filter element assembly with a rotary water stop function, a circumferential rotation limiting component is arranged between the rotary seal seat and the filter element base. The rotary seal seat can be rotated in the filter element base through the circumferential rotation limiting component, and the circumferential rotation limiting component can play a role in limiting and guiding the rotation of the rotary seal seat to ensure the rotation range.

[0009] In the above replacement structure of a filter element assembly with a rotary water stop function, the circumferential rotation limiting component includes an arc-shaped groove arranged at the bottom of the filter element base. The arc-shaped groove is circumferentially distributed with the center of the filter element base as the center of the circle. A movable block slidably arranged in the arc-shaped groove is arranged at the bottom of the rotary seal seat, and the rotary seal seat is movably arranged in the arc-shaped groove through the movable block. When the rotary seal seat rotates 90 degrees, the rotary seal seat seals and stops water leakage from the water inlet and outlet holes on both sides of the filter element base, improving the water stop efficiency.

[0010] In the above replacement structure of a filter element assembly with a rotary water stop function, the sealing component includes a plurality of annular sealing grooves arranged at the bottom of the filter element base. The annular sealing grooves are respectively located on the circumferential outer sides of the respective water inlet and outlet holes. Sealing rings that protrude outside the annular sealing grooves and are in contact with the bottom of the filter element base are arranged in the annular sealing grooves. The annular sealing grooves can facilitate the installation of the sealing rings, and the sealing rings can improve the sealing effect when the rotary seal seat seals and stops water leakage from the water inlet and outlet holes on both sides of the filter element base.

[0011] In the replacement structure of the filter element assembly with a rotating water stop function described above, the filter element water stop assembly includes a filter element valve core disposed within the filter element connector. A filter element valve core spring is provided at one end of the filter element valve core away from the rotating seal seat. The rotating joint water stop assembly includes a rotating joint valve core disposed within the rotating joint. One end of the rotating joint valve core passes through the rotating joint and is inserted into the valve core hole and abuts against the filter element valve core. A rotating joint valve core spring is provided at the end of the rotating joint valve core away from the valve core hole. The rotating joint can be actively sealed by the rotating joint valve core. When the rotating joint valve core abuts against the filter element valve core, the rotating joint can communicate with the filter element connector. When the rotating joint is separated from the filter element connector, the rotating joint valve core spring can drive the rotating joint valve core to self-reset and seal, ensuring the water stop effect.

[0012] In the replacement structure of the filter element assembly with a rotating water stop function described above, the rotating positioning structure includes a plurality of screw-in bosses provided on the circumferential outer side of the installation portion of the filter element body. One end of the screw-in boss has a screw-in bevel. A plurality of screw-in grooves are provided on the circumferential inner side of the filter element seat and are arranged at an oblique angle and axially abut against the screw-in bosses. An insertion notch for the screw-in boss to be inserted and communicating with the screw-in groove is formed between the screw-in grooves. The screw-in bevel can facilitate the screw-in boss to be disposed in the screw-in groove through the insertion notch, improving the screw-in efficiency. And the screw-in boss abuts against the screw-in groove, which can ensure the connection stability.

[0013] In the replacement structure of the filter element assembly with a rotating water stop function described above, the circumferential outer side of the end face of the filter element body away from the installation portion has an arc-shaped groove. An arc-shaped handle rotatably connected to the filter element body is provided within the arc-shaped groove. The arc-shaped groove can facilitate the installation and placement of the arc-shaped handle. And through the arc-shaped handle, it is convenient for the user to control the loading and unloading of the filter element body.

[0014] Compared with the existing technology, the advantages of the present utility model are as follows:

[0015] 1. The circumferential rotation limiting component can facilitate the sealing and water stopping between the rotating seal seat and the water inlet and outlet holes, improving the water stopping efficiency and reducing the production cost.

[0016] 2. The sealing component can improve the sealing effect when the rotating seal seat rotates and seals with the filter element base.

[0017] 3. The rotating positioning structure can facilitate the loading, unloading and replacement of the filter element body, improving the replacement efficiency.

[0018] 4. The filter element water stop assembly can self-reset and stop water for the filter element connector, ensuring the water stop effect for the filter element body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic structural diagram of the present utility model.

[0020] Figure 2 It is a structural sectional view of the present utility model.

[0021] Figure 3 It is a schematic structural diagram of the installation part in the present utility model.

[0022] Figure 4 It is a schematic structural diagram of the filter element seat in the present utility model.

[0023] Figure 5 It is a schematic structural diagram of the filter element base in the present utility model.

[0024] Figure 6 It is a schematic structural diagram of the rotary seal seat in the present utility model.

[0025] In the figure: filter element main body 1, filter element hole 11, filter element joint 12, installation part 13, arc-shaped groove 14, arc-shaped handle 15, rotary positioning structure 2, screwed-in boss 21, screwed-in inclined mouth 22, filter element seat 23, screwed-in groove 24, insertion notch 25, filter element base 3, water inlet and outlet holes 31, filter element water stop assembly 4, filter element valve core 41, filter element valve core spring 42, rotary seal seat 5, rotary joint 51, rotary joint water stop assembly 6, rotary joint valve core 61, valve core hole 62, rotary joint valve core spring 63, sealing assembly 7, annular sealing groove 71, sealing ring 72, circumferential rotation limiting assembly 8, arc-shaped groove 81, movable block 82. Specific embodiments

[0026] The following further describes the present utility model in detail in conjunction with the accompanying drawings and specific embodiments.

[0027] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 5As shown in the figure, a replacement structure of a filter element assembly with a rotating water stop function includes a filter element main body 1 with a plurality of filter element holes 11 at one end. Filter element connectors 12 are respectively arranged in the filter element holes 11. A filter element body is fixedly arranged in the filter element main body 1 through the filter element connectors 12, and filtration is carried out through the filter element body. One end of the filter element main body 1 with the filter element holes 11 is connected to a filter element base 3 through a rotation positioning structure 2. Through the rotation positioning structure 2, it is convenient for the filter element main body 1 to rotate on the filter element base 3. A filter element water stop assembly 4 is arranged in the filter element connector 12. The filter element water stop assembly 4 seals the filter element connector 12, which can ensure the water stop effect of the filter element connector 12. A plurality of water inlet and outlet holes 31 are arranged on the filter element base 3. There are three water inlet and outlet holes 31 on the filter element base 3, with the middle one being the water outlet hole and the two sides being the water inlet holes. A rotating seal seat 5 is rotatably arranged on the inner circumference of the filter element base 3. A plurality of rotating connectors 51 are arranged in the rotating seal seat 5, which are respectively inserted into the filter element holes 11 in a one-to-one correspondence and are respectively in communication with the water inlet and outlet holes 31 in a one-to-one correspondence. Through the rotating connector 51, users can drive the rotating seal seat 5 to rotate synchronously while rotating the filter element main body 1 according to needs, so that the two water inlet holes of the filter element base 3 are sealed and stopped water through the rotating seal seat 5, improving the water stop efficiency. At least one of the plurality of rotating connectors 51 is provided with a rotating connector water stop assembly 6 that abuts against the filter element water stop assembly 4. The rotating connector water stop assembly 6 is arranged in the rotating connector 51 corresponding to the water outlet hole. When the rotating connector water stop assembly 6 abuts against the filter element water stop assembly 4, the water outlet hole can be communicated with the filter element body through the filter element connector 12. A sealing assembly 7 is arranged between the rotating seal seat 5 and the filter element base 3. When the rotating seal seat 5 rotates circumferentially relative to the filter element base 3, the sealing assembly 7 can seal the rotating connector 51 without the rotating connector water stop assembly 6 and the water inlet and outlet holes 31 from each other. Through the sealing assembly 7, the sealing effect between the rotating seal seat 5 and the filter element base 3 can be ensured, improving the water stop efficiency and reducing the water stop cost.

[0028] Specifically, the filter element main body 1, the rotating seal seat 5, and the filter element base 3 are coaxially arranged respectively, which is convenient for connecting the filter element main body 1 with the rotating seal seat 5 and the filter element base 3, and can ensure the communication effect. One end of the filter element main body 1 has a reduced opening-shaped installation part 13. The filter element holes 11 are respectively arranged on the end face of the installation part 13, and the rotation positioning structure 2 is arranged between the installation part 13 and the filter element base 3. Through the rotation positioning structure 2, it is convenient for the installation part 13 to be connected to the filter element base 3, improving the connection efficiency and disassembly efficiency.

[0029] Among them, the numbers of the filter element holes 11, the rotary joints 51, and the water inlet and outlet holes 31 are three respectively. One of the three filter element holes 11 is arranged at the center of the filter element body 1, one of the three rotary joints 51 is arranged at the center of the rotary seal seat 5, and one of the three water inlet and outlet holes 31 is arranged at the center of the filter element base 3. The rotary joint 51 arranged at the center is inserted into the filter element hole 11 arranged at the center, and the water outlet hole is communicated with the rotary joint 51 arranged at the center, ensuring the water inlet and outlet of the filter element body 1 and ensuring the filtering effect.

[0030] As Figure 2 , Figure 3 , Figure 5 , Figure 6 shown, the rotary joint water stop assembly 6 is arranged in the rotary joint 51 located at the center of the rotary seal seat 5. One end of the rotary joint water stop assembly 6 extends into the filter element hole 11 located at the center of the filter element body 1 and the other end extends into the water inlet and outlet hole 31 at the center of the filter element base 3. The rotary joint 51 can be stopped from leaking water through the rotary joint water stop assembly 6, and when the rotary joint water stop assembly 6 abuts against the filter element water stop assembly 4, the rotary joint 51 can be communicated with the filter element joint 12.

[0031] Furthermore, a circumferential rotation limiting assembly 8 is provided between the rotary seal seat 5 and the filter element base 3. Through the circumferential rotation limiting assembly 8, the rotary seal seat 5 can rotate in the filter element base 3, and it can play a role in limiting and guiding the rotation of the rotary seal seat 5 to ensure the rotation range.

[0032] Among them, the circumferential rotation limiting assembly 8 includes an arc-shaped groove 81 arranged at the bottom of the filter element base 3. The arc-shaped groove 81 is circumferentially distributed with the center of the filter element base 3 as the center of the circle. A movable block 82 slidably arranged in the arc-shaped groove 81 is provided at the bottom of the rotary seal seat 5, and the rotary seal seat 5 is movably arranged in the arc-shaped groove 81 through the movable block 82. When the rotary seal seat 5 rotates 90 degrees, the rotary seal seat 5 seals and stops the water leakage of the water inlet and outlet holes 31 on both sides of the filter element base 3, improving the water stop efficiency.

[0033] Combined with Figure 2 , Figure 3 , Figure 4 , Figure 5 shown, the sealing assembly 7 includes a plurality of annular sealing grooves 71 arranged at the bottom of the filter element base 3. The annular sealing grooves 71 are respectively located on the circumferential outer sides of the respective water inlet and outlet holes 31. Sealing rings 72 that protrude outside the annular sealing grooves 71 and are in contact with the bottom of the filter element base 3 are arranged in the annular sealing grooves 71. The annular sealing grooves 71 facilitate the installation of the sealing rings 72, and the sealing rings 72 can improve the sealing effect when the rotary seal seat 5 seals and stops the water leakage of the water inlet and outlet holes 31 on both sides of the filter element base 3.

[0034] Among them, the filter element water stop assembly 4 includes a filter element valve core 41 disposed inside the filter element joint 12. One end of the filter element valve core 41 away from the rotary seal seat 5 is provided with a filter element valve core spring 42. The filter element joint 12 can be movably blocked through the filter element valve core 41, and the filter element valve core 41 can be driven to self-reset through the filter element valve core spring 42. The rotary joint water stop assembly 6 includes a rotary joint valve core 61 disposed inside the rotary joint 51. One end of the rotary joint valve core 61 passes through the rotary joint 51 and is inserted into the valve core hole 62 and abuts against the filter element valve core 41. One end of the rotary joint valve core 61 away from the valve core hole 62 is provided with a rotary joint valve core spring 63. The rotary joint 51 can be movably blocked through the rotary joint valve core 61. When the rotary joint valve core 61 abuts against the filter element valve core 41, the rotary joint 51 can be communicated with the filter element joint 12. When the rotary joint 51 is separated from the filter element joint 12, the rotary joint valve core spring 63 can drive the rotary joint valve core 61 to self-reset and block, ensuring the water stop effect.

[0035] Specifically, the rotation positioning structure 2 includes a plurality of screwing convex platforms 21 disposed on the circumferential outer side of the installation part 13 of the filter element main body 1. One end of the screwing convex platform 21 has a screwing bevel 22. A plurality of screwing grooves 24 are disposed on the circumferential inner side of the filter element seat 23 at an oblique angle and axially abut against the screwing convex platforms 21. An insertion notch 25 for the screwing convex platforms 21 to be inserted and communicated with the screwing grooves 24 is formed between the respective screwing grooves 24. The screwing bevel 22 can facilitate the screwing convex platforms 21 to be disposed in the screwing grooves 24 through the insertion notch 25, improving the screwing efficiency. And the screwing convex platforms 21 abut against the screwing grooves 24, which can ensure the connection stability.

[0036] Combined with Figure 1 、 Figure 3 As shown in the figure, an arc-shaped groove 14 is provided on the circumferential outer side of the end face of the filter element main body 1 away from the installation part 13. And an arc-shaped handle 15 rotatably connected to the filter element main body 1 is disposed in the arc-shaped groove 14. The arc-shaped groove 14 can facilitate the installation and placement of the arc-shaped handle 15. And through the arc-shaped handle 15, it is convenient for the user to control the loading and unloading of the filter element body 1.

[0037] The principle of this embodiment is as follows: When the installation part 13 of the filter element main body 1 is connected to the filter element base 3 through the rotary positioning structure 2, and the rotary seal seat 5 in the filter element base 3 is inserted and connected to the filter element joint 12 through the rotary joint 51, the rotary joint water stop assembly 6 in the rotary joint 51 abuts against the filter element water stop assembly 4 in the filter element joint 12, and the rotary joint 51 is connected and communicated with the filter element joint 12, and the water inlet and outlet holes 31 are connected and communicated with the filter element joint 12 through the rotary joint 51. When the user needs to stop the water, by rotating the filter element body 1, the rotary seal seat 5 can be driven to rotate 90 degrees in the filter element base 3 through the axial rotation limiting component 8, the water inlet holes on both sides of the water outlet hole of the filter element base 3 are blocked by the rotary seal seat 5, and the sealing water stop effect between the rotary seal seat 5 and the water inlet and outlet holes 31 can be improved through the sealing component 7, so as to improve the water stop efficiency.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although terms such as filter element main body 1, filter element hole 11, filter element joint 12, installation part 13, arc-shaped groove 14, arc-shaped handle 15, rotary positioning structure 2, screw-in boss 21, screw-in inclined mouth 22, filter element seat 23, screw-in groove 24, insertion notch 25, filter element base 3, water inlet and outlet holes 31, filter element water stop assembly 4, filter element valve core 41, filter element valve core spring 42, rotary seal seat 5, rotary joint 51, rotary joint water stop assembly 6, rotary joint valve core 61, valve core hole 62, rotary joint valve core spring 63, sealing component 7, annular sealing groove 71, sealing ring 72, circumferential rotation limiting component 8, arc-shaped groove 81, movable block 82 are used more frequently in this article, the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A replacement structure for a filter element assembly with a rotating water stop function, including a filter element main body (1) with a plurality of filter element holes (11) at one end, filter element connectors (12) are respectively arranged in the filter element holes (11), and one end of the filter element main body (1) with the filter element holes (11) is connected with a filter element base (3) through a rotating positioning structure (2), characterized in that, The filter element joint (12) is internally provided with a filter element water stop assembly (4). The filter element base (3) is provided with a plurality of water inlet and outlet holes (31). A rotary sealing seat (5) is rotatably arranged on the inner circumferential side of the filter element base (3). The rotary sealing seat (5) is internally provided with a plurality of rotary joints (51) that are respectively inserted into the filter element holes (11) in a one-to-one correspondence and are respectively in one-to-one correspondence and communication with the water inlet and outlet holes (31). At least one of the plurality of rotary joints (51) is internally provided with a rotary joint water stop assembly (6) that abuts against the filter element water stop assembly (4). A sealing assembly (7) is arranged between the rotary sealing seat (5) and the filter element base (3) to seal the rotary joint (51) without the rotary joint water stop assembly (6) and the water inlet and outlet holes (31) when the rotary sealing seat (5) rotates circumferentially relative to the filter element base (3).

2. The replacement structure of a filter element assembly with a rotary water stop function according to claim 1, characterized in that, The filter element body (1), the rotary sealing seat (5), and the filter element base (3) are coaxially arranged respectively. One end of the filter element body (1) has a reduced-diameter mounting portion (13). The filter element holes (11) are respectively arranged on the end surface of the mounting portion (13), and the rotary positioning structure (2) is arranged between the mounting portion (13) and the filter element base (3).

3. The replacement structure of a filter element assembly with a rotary water stop function according to claim 1, characterized in that, The number of the filter element holes (11), the rotary joints (51), and the water inlet and outlet holes (31) is three respectively. One of the three filter element holes (11) is arranged at the center of the filter element body (1). One of the three rotary joints (51) is arranged at the center of the rotary sealing seat (5). One of the three water inlet and outlet holes (31) is arranged at the center of the filter element base (3).

4. The replacement structure of a filter element assembly with a rotary water stop function according to claim 3, characterized in that, The rotary joint water stop assembly (6) is arranged in the rotary joint (51) located at the center of the rotary sealing seat (5). One end of the rotary joint water stop assembly (6) extends into the filter element hole (11) located at the center of the filter element body (1), and the other end extends into the water inlet and outlet hole (31) at the center of the filter element base (3).

5. The replacement structure of a filter element assembly with a rotary water stop function according to claim 1 or 2 or 3 or 4, characterized in that, A circumferential rotation limiting assembly (8) is arranged between the rotary sealing seat (5) and the filter element base (3).

6. The replacement structure of a filter element assembly with a rotary water stop function according to claim 5, characterized in that, The circumferential rotation limiting assembly (8) includes an arc-shaped groove (81) arranged at the bottom of the filter element base (3). The arc-shaped groove (81) is circumferentially distributed with the center of the filter element base (3) as the center of the circle. A movable block (82) that is slidably arranged in the arc-shaped groove (81) is arranged at the bottom of the rotary sealing seat (5).

7. The replacement structure of a filter element assembly with a rotary water stop function according to claim 5, characterized in that, The sealing assembly (7) includes a plurality of annular sealing grooves (71) arranged at the bottom of the filter element base (3). The annular sealing grooves (71) are respectively located on the circumferential outer sides of the respective water inlet and outlet holes (31). Sealing rings (72) that protrude outside the annular sealing grooves (71) and are in contact with the bottom of the filter element base (3) are arranged in the annular sealing grooves (71).

8. The replacement structure of a filter element assembly with a rotary water stop function according to claim 1, characterized in that, The described filter element water stop assembly (4) includes a filter element valve core (41) disposed within the filter element joint (12), and a filter element valve core spring (42) is provided at one end of the filter element valve core (41) away from the rotary seal seat (5); the rotary joint water stop assembly (6) includes a rotary joint valve core (61) disposed within the rotary joint (51), one end of the rotary joint valve core (61) passes through the rotary joint (51) and is inserted into the valve core hole (62) and abuts against the filter element valve core (41), and a rotary joint valve core spring (63) is provided at the end of the rotary joint valve core (61) away from the valve core hole (62).

9. The replacement structure of a filter element assembly with a rotary water stop function according to claim 2, characterized in that, The described rotary positioning structure (2) includes a plurality of screwing-in bosses (21) disposed on the circumferential outer side of the mounting portion (13) of the filter element body (1), one end of the screwing-in boss (21) has a screwing-in bevel (22), and a plurality of screwing-in grooves (24) are provided on the circumferential inner side of the filter element seat (23) at an oblique angle and axially abut against the screwing-in bosses (21), and an insertion notch (25) for the screwing-in bosses (21) to be inserted into and communicating with the screwing-in grooves (24) is formed between the respective screwing-in grooves (24).

10. The replacement structure of a filter element assembly according to claim 2, characterized in that, The outer circumference of the end face of the filter element body (1) away from the mounting portion (13) has an arc-shaped groove (14), and an arc-shaped handle (15) rotatably connected to the filter element body (1) is provided within the arc-shaped groove (14).

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