A pre-filter mounting structure

Abstract

The utility model relates to water purification equipment technical field, the utility model discloses a front filter mounting structure, include: filter core subassembly, its one end is provided with the joint lug, filter seat is with filter core subassembly's one end can dismantle and is connected, and rotating compression assembly, rotating compression assembly includes: turntable, shape is circular ring structure, and the inner wall surface on has set up joint slide groove, and the joint lug is embedded in joint slide groove, and is connected with joint slide groove rotation. This structure is through setting filter seat, can conveniently dismantle and install filter core subassembly, and is easy to replace. Through setting rotating compression assembly, setting joint slide groove in the turntable, setting joint lug in filter core subassembly, can lock the connection through the rotation cooperation between after connecting with filter seat, avoids filter core subassembly to come out, is favorable to guarantee the filtering effect, avoids appearing seepage, can make the replacement of filter core subassembly dismantle more convenient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a pre-filter installation structure. Background Technology

[0002] Currently, most whole-house central water purifiers on the market primarily use either threaded or flanged connections for filter replacement. However, in actual use, threaded connections are prone to leaks if not properly tightened, while flanged connections are more cumbersome to replace. These two connection methods cause considerable inconvenience for users when replacing filter cartridges and are also prone to leakage risks due to improper operation. Utility Model Content

[0003] The present invention aims to solve the problem that the existing filter element installation and connection methods are inconvenient to replace and are prone to leakage risks.

[0004] This utility model provides a pre-filter installation structure, which includes: The filter element assembly has a snap-fit ​​protrusion at one end; The filter base is detachably connected to one end of the filter element assembly; and a rotating clamping assembly, the rotating clamping assembly comprising: The turntable is circular in shape and has a snap-fit ​​groove on its inner wall. The snap-fit ​​protrusion is embedded in the snap-fit ​​groove and is rotatably connected to the snap-fit ​​groove.

[0005] As some sub-solutions of the above technical solution, the guiding direction of the snap-fit ​​groove is inclined upward towards the filter seat; The lower groove surface of the snap-fit ​​slide is a screw-in guide groove, which includes an inclined screw-in section and a positioning section that can abut against the snap-fit ​​protrusion. The upper groove surface of the snap-fit ​​slide is a smoothly inclined screw-out guide groove.

[0006] As some sub-solutions of the above technical solutions, the positioning section is provided with a positioning block, and the abutting surface of the snap-fit ​​protrusion that abuts against the positioning section is provided with a positioning groove corresponding to the positioning block. The positioning groove can be snapped onto the positioning block to fix the turntable and the filter element assembly.

[0007] As some sub-solutions of the above technical solution, the turntable is provided with a handle lug on the side facing the filter seat; The filter base has a rotating groove for the handle lug to pass through; The handle hook is detachably connected to a handle.

[0008] As a sub-solution of the above technical solution, the rotating clamping assembly further includes: The chuck, which has a circular ring structure, is positioned around the turntable. A limiting block is provided on the inner wall surface of the chuck, and the limiting block is located between the turntable and the filter element assembly to limit the turntable.

[0009] As some sub-solutions of the above technical solutions, the filter element assembly includes a filter barrel, the filter barrel is connected to a filter barrel cover, and the filter element assembly is detachably connected to the filter base through the filter barrel cover.

[0010] As some sub-solutions of the above technical solution, the filter bucket cover is provided with a water inlet and a water outlet; The filter base is provided with two guide pipe structures that are respectively connected to the water inlet and the water outlet, and the two guide pipe structures are respectively sealed to the water inlet and the water outlet.

[0011] As some sub-solutions of the above technical solution, the filter element assembly further includes: The upper end cover is disposed within the cavity enclosed by the filter barrel cover and the filter barrel, and includes an L-shaped end and a cylindrical water outlet end, wherein the water outlet end is sealed to the filter barrel cover. The lower end cover is disposed within the cavity enclosed by the filter cover and the filter barrel, with one side spaced apart from the upper end cover and the other side abutting against the filter barrel; The filter element has a cylindrical structure, with its two ends abutting against the L-shaped end and the lower end cap, respectively. The water inlet and water outlet of the filter element are connected to the water inlet and the water outlet, respectively.

[0012] As some sub-solutions of the above technical solution, both the filter cover and the filter base are provided with corresponding anti-foolproof structures.

[0013] As some sub-solutions of the above technical solution, a snap-fit ​​position is provided on the side of the filter base opposite to the filter element assembly; The pre-filter installation structure also includes a filter base cover, on which a snap-fit ​​block is provided. The snap-fit ​​block can snap onto the snap-fit ​​position to fix the filter base cover and the filter base.

[0014] The beneficial effects of this pre-filter installation structure are as follows: In this invention, the filter element assembly filters the water source. The filter base and filter element assembly are detachably connected, and the filter base features a structure that facilitates easy engagement with the water purification equipment. This allows for convenient disassembly and installation of the filter element assembly, making it easy to replace and ensuring the long-term water purification efficiency and effect of the equipment. By incorporating a rotating clamping assembly with a locking groove in the turntable and a locking protrusion on the filter element assembly, the connection between the filter element assembly and the filter base is locked, preventing the filter element assembly from detaching and ensuring filtration effectiveness while preventing leakage. This installation structure makes the replacement and disassembly of the filter element assembly more convenient and reliable. Attached Figure Description

[0015] 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: Figure 1 This is one of the structural diagrams of the pre-filter installation structure of this utility model.

[0016] Figure 2 This is the second schematic diagram of the pre-filter installation structure of this utility model.

[0017] Figure 3 This is the third schematic diagram of the pre-filter installation structure of this utility model.

[0018] Figure 4 This is the fourth schematic diagram of the pre-filter installation structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the turntable and chuck of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the filter bucket cover of this utility model.

[0021] Figure 7 This is a schematic diagram of the filter base and turntable of this utility model.

[0022] Labeling Explanation: 100, Filter Cartridge Assembly; 110, Snap-fit ​​Protrusion; 111, Positioning Groove; 120, Filter Canister; 130, Filter Canister Cover; 131, Inlet; 132, Outlet; 140, Top Cover; 141, L-shaped End; 142, Outlet End; 150, Bottom Cover; 160, Filter Element; 200, Filter Base; 210, Rotating Disc Groove; 220, Flow Guide Pipe Structure; 230 300. Snap-fit ​​position; 310. Rotary clamping assembly; 311. Turntable; 312. Snap-fit ​​slide groove; 313. Screw-in guide groove; 314. Inclined screw-in section; 315. Positioning section; 316. Positioning block; 317. Screw-out guide groove; 318. Handle hook; 320. Handle; 331. Chuck; 332. Limiting block; 400. Foolproof structure; 500. Filter seat cover; 510. Snap-fit ​​block. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] The following is combined Figures 1 to 7 The embodiments of this utility model are described below.

[0025] This utility model provides a pre-filter installation structure, which includes: The filter element assembly 100 has a snap-fit ​​protrusion 110 at one end; The filter base 200 is detachably connected to one end of the filter element assembly 100; and a rotating clamping assembly 300, the rotating clamping assembly 300 comprising: The turntable 310 is in the shape of a ring structure, and a snap-fit ​​groove 311 is provided on its inner wall surface; The snap-fit ​​protrusion 110 is embedded in the snap-fit ​​groove 311 and is rotatably connected to the snap-fit ​​groove 311.

[0026] In this invention, the filter element assembly 100 filters the water source. The filter base 200 is detachably connected to the filter element assembly 100. The filter base 200 features a structure that facilitates easy engagement with the water purification equipment, allowing for convenient disassembly and installation of the filter element assembly 100. This facilitates easy replacement and ensures the long-term water purification efficiency and effectiveness of the equipment. The rotating clamping assembly 300, along with the engaging protrusion 100 and engaging groove 311, locks the filter element assembly 100 in place after it is connected to the filter base 200, preventing it from coming loose and ensuring filtration efficiency while preventing leakage. This installation structure makes the replacement and disassembly of the filter element assembly 100 more convenient and reliable.

[0027] Specifically, in this utility model, when the filter element assembly 100 and the filter base 200 are installed, after the snap-fit ​​protrusion 110 is embedded into the snap-fit ​​groove 311, the filter base 200 is connected to the inlet 131 and outlet 132 of the filter bucket cover 130 through the two guide pipe structures 220. By rotating the turntable 310, the snap-fit ​​protrusion 110 on the filter element assembly 100 enters the positioning section 314 of the snap-fit ​​groove 311, which helps to keep the turntable 310 and the filter element assembly 100 relatively fixed.

[0028] In one specific embodiment of the present invention, the filter element assembly 100 includes a filter barrel 120, the filter barrel 120 is connected to a filter barrel cover 130, and the filter element assembly 100 is detachably connected to the filter base 200 through the filter barrel cover 130.

[0029] In this invention, a filter chamber for filtration is formed by connecting a filter barrel 120 and a filter barrel cover 130. The filter barrel 120 and the filter barrel cover 130 can be connected by means of welding or other methods, with corresponding mating parts provided at the connection point. Alternatively, threads can be provided at the connection point for threaded connection, facilitating disassembly, installation, and replacement of the filter media.

[0030] Specifically, the filter element assembly 100 in this utility model can be detachably connected to the filter base 200 via the filter bucket cover 130, and the snap-fit ​​protrusion 110 can be specifically set on the filter bucket cover 130 in the filter element assembly 100.

[0031] In one specific embodiment of this utility model, the filter cover 130 is provided with an inlet 131 and an outlet 132; The filter base 200 is provided with two guide pipe structures 220 that are respectively connected to the inlet 131 and the outlet 132, and the two guide pipe structures 220 are respectively sealed to the inlet 131 and the outlet 132.

[0032] In this utility model, by setting an inlet 131 and an outlet 132 on the filter cover 130, both located close to one end of the filter element assembly 100, and by setting a guide pipe structure 220 on the filter base 200 that is connected to the inlet 131 and the outlet 132 respectively, it is easy to achieve the connection effect between the filter element assembly 100 and the water purification equipment.

[0033] Specifically, the filter element assembly 100 in this utility model is detachably connected to the filter base 200 via the filter bucket cover 130. This connection is achieved through the connection of the guide pipe structure 220 with the inlet 131 and the outlet 132. A water inlet seat is provided at one end of the guide pipe structure 220, which is easy to connect with the inlet 131 and the outlet 132. After sealing rings are attached to the inlet 131 and the outlet 132, they are snapped into the water inlet seat to achieve a detachable sealed connection. Similarly, a snap-fit ​​structure is provided at the other end of the guide pipe structure 220, which is easy to connect with the water purification equipment. This facilitates disassembly and installation and enables the filter element assembly 100 to connect with the water purification equipment.

[0034] In one specific embodiment of this utility model, both the filter cover 130 and the filter base 200 are provided with corresponding anti-foolproof structures 400.

[0035] In this utility model, by setting corresponding anti-foolproof structures 400 on the filter cover 130 and the filter base 200, it is beneficial to avoid the filter base 200 and the filter cover 130 being connected in reverse, ensuring that the water inlet 131 of the filter base 200 is connected to the water source end to be filtered in the water purification equipment, which is beneficial to maintaining the water path direction in the filter element and protecting the filter element.

[0036] Specifically, the foolproof structure 400 can be implemented by setting a protrusion on the side of the filter base 200 facing the filter cover 130, and setting a groove on the filter cover 130 corresponding to the protrusion. Only when the protrusion and the groove are vertically aligned and installed can they be locked by rotating the clamping assembly 300. In other positions, the protrusion and the filter cover 130 will interfere with each other and cannot be installed normally. By setting the foolproof structure 400, it is convenient for customers to align and install the filter element assembly 100 and protect the filter element.

[0037] In one specific embodiment of this utility model, the filter element assembly 100 further includes: The upper end cover 140 is disposed within the cavity enclosed by the filter cover 130 and the filter 120, and includes an L-shaped end 141 and a cylindrical water outlet end 142, wherein the water outlet end 142 is sealed to the filter cover 130. The lower end cover 150 is disposed within the cavity enclosed by the filter cover 130 and the filter barrel 120, with one side spaced apart from the upper end cover 140 and the other side abutting against the filter barrel 120; The filter element 160 has a cylindrical structure, with its two ends abutting against the L-shaped end 141 and the lower end cap 150, respectively. The water inlet and water outlet of the filter element 160 are connected to the water inlet 131 and the water outlet 132, respectively.

[0038] The water inlet of the filter element 160 is the outer side of the filter element 160, and the water outlet of the filter element 160 is the inner side.

[0039] In this application, an upper cover 140 and a lower cover 150 are provided. The water outlet end 142 of the upper cover 140 is sealed to the filter barrel cover 130. One side of the lower cover 150 is spaced apart from the L-shaped end 141 of the upper cover 140, which facilitates the installation of the cylindrical filter element 160 in the space between the upper cover 140 and the lower cover 150. Both ends of the filter element 160 abut against the L-shaped end 141 and the lower cover 150, respectively, while the other side of the lower cover 150 abuts against the filter barrel 120. After the water source enters the filter barrel 120 through the water inlet 131 of the filter barrel cover 130, it can only contact the outer part of the filter element 160. Under water pressure, the water source flows from the outside to the inside through the filter element 160 and enters the inner part of the filter element 160 that is connected to the water outlet 132. The arrangement of this utility model is beneficial to the filtration of the water source.

[0040] In one specific embodiment of this utility model, the guiding direction of the snap-fit ​​groove 311 is inclined upward towards the filter seat 200; The lower groove surface of the snap-fit ​​groove 311 is a screw-in guide groove 312, which includes an inclined screw-in section 313 and a positioning section 314 that can abut against the snap-fit ​​protrusion 110. The upper groove surface of the snap-fit ​​groove 311 is a smoothly inclined screw-out guide groove 315. The positioning segment 314 is provided with a positioning block 3141. The abutting surface of the snap-fit ​​protrusion 110 that abuts against the positioning segment 314 is provided with a positioning groove 111 corresponding to the positioning block 3141. The positioning groove 111 can be snapped onto the positioning block 3141 to fix the turntable 310 and the filter element assembly 100.

[0041] Among them, the snap-fit ​​groove 311 can be symmetrically set to two, and the snap-fit ​​protrusion 110 can also be set to two accordingly.

[0042] In this invention, by setting the guiding direction of the snap-fit ​​groove 311, the filter element assembly 100 is locked when close to the filter base 200, which helps to ensure the sealing connection between the inlet 131 and outlet 132 on the filter cover 130 and the guide pipe structure 220. By setting the screw-in guide groove 312, after the snap-fit ​​protrusion 110 is embedded in the snap-fit ​​groove 311, the snap-fit ​​protrusion 110 can be rotated to the positioning section 314 via the inclined screw-in section 313, which facilitates blind installation. By setting the screw-out guide groove 315, the filter element assembly 100 can be easily screwed out of the turntable 310, making disassembly and installation easy.

[0043] In one specific embodiment of this utility model, a handle lug 316 is provided on the side of the turntable 310 facing the filter seat 200; The filter base 200 is provided with a rotating groove 210 through which the handle lug 316 passes; The handle hook 316 is detachably connected to a handle 320.

[0044] In this invention, a handle lug 316 is provided on the side of the turntable 310 near the filter base 200. After connecting the handle 320, it is convenient to rotate the turntable 310. By rotating the handle 320, the turntable 310 is rotated synchronously, so as to install and remove the filter element assembly 100. By providing a turntable rotation groove 210 on the filter base 200, interference during the rotation of the turntable 310 is avoided. At the same time, after corresponding adjustments, the two ends of the turntable rotation groove 210 can correspond to the insertion and positioning of the locking protrusion 110 in the turntable 310 and the unscrewing and disengagement, which facilitates the disassembly and installation of the filter element assembly 100.

[0045] In one specific embodiment of this utility model, the rotating clamping assembly 300 further includes: The chuck 330 is a circular structure and is arranged around the turntable 310; A limiting block 331 is provided on the inner wall surface of the chuck 330. The limiting block 331 is located between the turntable 310 and the filter element assembly 100 and is used to limit the turntable 310.

[0046] The limiting block 331 has space for the snap-fit ​​protrusion 110 to come out, making it easy to pull out the filter element assembly 100 during disassembly.

[0047] The upper surfaces of both the turntable 310 and the chuck 330 can abut against the filter base 200, the upper surface of the limiting block 331 can abut against the lower surface of the turntable 310, and the lower surface of the limiting block 331 can abut against the filter barrel cover 130. This abutment helps maintain the limiting effect on the turntable 310.

[0048] In this utility model, after the filter cartridge cover 130 is connected to the filter base 200, the filter element assembly 100 is locked and released by rotating the turntable 310. During the process of the locking protrusion 110 being screwed in and out, the interaction between the turntable 310 and the filter element assembly 100 causes the turntable 310 to have a tendency to move relative to the filter element assembly 100. The limiting block 331 of the chuck 330 restricts the up and down movement of the turntable 310, and the locking protrusion 110 can be stably screwed in and held on the positioning section 314, which helps to prevent the filter element assembly 100 from falling off the turntable 310.

[0049] In one specific embodiment of this utility model, a snap-fit ​​position 230 is provided on the side of the filter base 200 opposite to the filter element assembly 100; The pre-filter installation structure also includes a filter base cover 500, on which a snap-fit ​​block 510 is provided. The snap-fit ​​block 510 can be snapped onto the snap-fit ​​position 230 to fix the filter base cover 500 and the filter base 200.

[0050] In this utility model, the handle lug 316 passes through the filter base 200 and is connected to the handle 320. By setting the filter base cover 500, the handle lug 316, the handle 320 and the flow guide tube structure 220 of the filter base 200 can be covered, improving the overall aesthetics and preventing accidental contact with the handle 320, which is conducive to maintaining the locking state of the filter element assembly 100.

[0051] The working principle of the pre-filter installation structure of this utility model is as follows: After sequentially installing the lower end cover 150, filter element 160, and upper end cover 140 into the filter cartridge 120, the filter cartridge cover 130 is installed to seal the filter cartridge 120, forming a relatively fixed filter element assembly 100. A turntable 310 is installed into the filter base 200 near the filter element assembly 100, with its upper surface abutting against the filter base 200. A handle lug 316 on the turntable 310 passes through a turntable rotation groove 210 formed in the filter base 200, and a handle 320 is installed onto the handle lug 316. A chuck 330 is then installed, with its upper surface abutting against the filter base 200, and its limiting block 331 abutting against the lower surface of the turntable 310. Next, the filter element assembly 100 is installed. It is then sealed and connected to the guide tube structure 220 of the filter base 200 via the inlet 131 and outlet 132 on the filter housing cover 130. The mating positions are aligned to ensure the anti-foolproof structures 400 on the filter base 200 and filter housing cover 130 correspond. During connection, the snap-fit ​​protrusion 110 on the filter element assembly 100 passes through the space left on the limiting block 331 and enters the snap-fit ​​groove 311. The handle 320 is rotated synchronously. The turntable 310, under relative motion, engages with the locking protrusion 110 into the locking groove 311. The locking protrusion 110 abuts against the groove surface of the screw-in guide groove 312 and passes through the inclined screw-in section 313 until it reaches the positioning section 314. The positioning groove 111 on the locking protrusion 110 and the positioning block 3141 on the positioning section 314 are correspondingly locked, thus fixing the turntable 310 and the filter element assembly 100, achieving a locking effect between the filter element assembly 100 and the filter base 200. After installation, the filter base cover 500 is installed on the filter base 200 by the corresponding locking block 510 of the filter base cover 500 and the locking position 230 of the filter base 200, and the handle 320 is closed to prevent accidental contact that could affect the connection between the filter element assembly 100 and the filter base 200.

[0052] After installation, the water source of the water purifier will enter the inlet 131 of the filter element assembly 100 under a certain water pressure. Through the arrangement between the filter element 160, the upper end cover 140 and the lower end cover 150, the water source passes from the outside to the inside through the filter element 160. After filtration, it is output to the water purifier through the outlet 132, thus completing the pre-filtration.

[0053] When it is necessary to disassemble the filter element assembly 100, open the filter seat cover 500 and rotate the turntable 310 in the opposite direction by using the handle 320. Under the relative movement, the positioning groove 111 of the locking protrusion 110 disengages from the positioning block 3141 on the positioning section 314. The locking protrusion 110 abuts against the unscrewing guide groove 315. Under the smooth tilt setting, the force can be decomposed by the inclined surface, and the locking protrusion 110 can be easily unscrewed from the locking slide groove 311 through the unscrewing guide groove 315, thereby releasing the locking effect on the filter element assembly 100. Next, by sequentially pulling the filter element assembly 100 out of the turntable 310 and the chuck 330, the inlet 131 and outlet 132 on the filter housing cover 130 are disengaged from the guide pipe structure 220 on the filter base 200, thus completing the disassembly of the filter element assembly 100. After processing the filter element 160 of the filter element assembly 100 or replacing it with a new filter element assembly 100, the above-mentioned installation process of the filter element assembly 100 is repeated to complete the replacement. Through the design of this utility model, the provided pre-filter installation structure can drive the turntable 310 to rotate by rotating the handle 320, and lock the filter element assembly 100 with the locking groove 311 in the turntable 310 through the locking structure of the filter element assembly 100. This connection method makes the replacement and disassembly of the filter element assembly 100 more convenient and reliable.

[0054] The preferred embodiments of the present invention have been described in detail above, but the present disclosure is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present disclosure.

[0055] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

Claims

1. A pre-filter installation structure, characterized in that, include: A filter element assembly (100) has a snap-fit ​​protrusion (110) at one end. The filter base (200) is detachably connected to one end of the filter element assembly (100); and a rotating clamping assembly (300), the rotating clamping assembly (300) comprising: The turntable (310) is in the shape of a ring structure, and a snap-fit ​​groove (311) is provided on its inner wall surface. The snap-fit ​​protrusion (110) is embedded in the snap-fit ​​groove (311) and is rotatably connected to the snap-fit ​​groove (311).

2. The pre-filter installation structure according to claim 1, characterized in that, The guide direction of the snap-fit ​​groove (311) is inclined upward towards the filter seat (200); The lower groove surface of the snap-fit ​​groove (311) is a screw-in guide groove (312), which includes an inclined screw-in section (313) and a positioning section (314) that can abut against the snap-fit ​​protrusion (110). The upper groove surface of the snap-fit ​​groove (311) is a smoothly inclined screw-out guide groove (315).

3. The pre-filter installation structure according to claim 2, characterized in that, The positioning section (314) is provided with a positioning block (3141), and the abutting surface of the snap-fit ​​protrusion (110) that abuts against the positioning section (314) is provided with a positioning groove (111) corresponding to the positioning block (3141). The positioning groove (111) can be snapped onto the positioning block (3141) to fix the turntable (310) and the filter element assembly (100).

4. The pre-filter installation structure according to claim 1, characterized in that, The turntable (310) is provided with a handle lug (316) on the side facing the filter seat (200). The filter seat (200) has a rotating groove (210) through which the handle lug (316) passes. The handle lug (316) is detachably connected to a handle (320).

5. The pre-filter installation structure according to claim 1, characterized in that, The rotary clamping assembly (300) further includes: The chuck (330) is in the shape of a ring and is arranged around the turntable (310); A limiting block (331) is provided on the inner wall surface of the chuck (330). The limiting block (331) is located between the turntable (310) and the filter element assembly (100) and is used to limit the turntable (310).

6. The pre-filter installation structure according to claim 1, characterized in that, The filter element assembly (100) includes a filter barrel (120), the filter barrel (120) is connected to a filter barrel cover (130), and the filter element assembly (100) is detachably connected to the filter base (200) through the filter barrel cover (130).

7. The pre-filter installation structure according to claim 6, characterized in that, The filter cover (130) is provided with an inlet (131) and an outlet (132). The filter base (200) is provided with two guide pipe structures (220) that are respectively connected to the inlet (131) and the outlet (132). The two guide pipe structures (220) are respectively sealed to the inlet (131) and the outlet (132).

8. The pre-filter installation structure according to claim 7, characterized in that, The filter assembly (100) also includes: The upper end cover (140) is disposed in the cavity enclosed by the filter cover (130) and the filter (120), and includes an L-shaped end (141) and a cylindrical water outlet end (142), the water outlet end (142) being sealed to the filter cover (130); The lower end cover (150) is disposed within the cavity enclosed by the filter cover (130) and the filter barrel (120), with one side spaced apart from the upper end cover (140) and the other side abutting against the filter barrel (120); The filter element (160) has a cylindrical structure, with its two ends abutting against the L-shaped end (141) and the lower end cap (150) respectively. The water inlet and water outlet of the filter element (160) are connected to the water inlet (131) and the water outlet (132) respectively.

9. The pre-filter installation structure according to claim 6, characterized in that, Both the filter cover (130) and the filter base (200) are provided with corresponding anti-foolproof structures (400).

10. The pre-filter installation structure according to claim 1, characterized in that, The filter base (200) has a snap-fit ​​position (230) on the side opposite to the filter element assembly (100). The pre-filter installation structure also includes a filter seat cover (500), on which a snap-fit ​​block (510) is provided. The snap-fit ​​block (510) can snap onto the snap-fit ​​position (230) to fix the filter seat cover (500) and the filter seat (200).

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