Water inlet device with convenient replacement of purification material

Abstract

The application relates to the technical field of water inlet equipment material replacement, in particular to water inlet equipment convenient for replacing purification material, which comprises a rectangular shell and a fine filter cylinder, the fine filter cylinder is arranged through the rectangular shell, a rectangular blocking box is arranged in the rectangular shell, a rectangular loading plate is slidably connected to the vertical surface of an exit in the rectangular blocking box, an L-shaped mounting plate is arranged on the upper surface of the rectangular blocking box, a driving motor is arranged in the inner ring of the L-shaped mounting plate, a group of rectangular fixing plates are arranged on the upper surface of the rectangular blocking box, a rotating rod is arranged through the exit of the rectangular fixing plate, a pair of screw rods are rotatably connected to the upper surface of the rectangular blocking box, a transmission wheel is fixedly connected to the section of the pair of screw rods away from the driving motor, the equipment is different from traditional water inlet equipment in the cleaning aspect, the cleaning of the equipment does not need to disassemble the whole machine, the cleaning mode is semi-automatic, and large residues accumulated in the equipment can be discharged and collected.

Description

Technical Field

[0001] This invention relates to the field of water inlet equipment material replacement technology, and in particular to a water inlet equipment that facilitates the replacement of purification materials. Background Technology

[0002] Outdoor swimming pools, exposed to the natural environment, are easily contaminated by dust, leaves, insects, and other debris. They are also affected by factors such as sunlight, rain, and temperature fluctuations, leading to a deterioration in water quality. Therefore, the inlet filter needs to effectively remove impurities, suspended solids, organic matter, bacteria, viruses, and other pollutants to ensure the water quality meets requirements. Outdoor pools are typically large in volume, requiring the processing of a correspondingly large amount of water. Consequently, the inlet filter needs to have a significant processing capacity, capable of handling large volumes of pool water in a short time to ensure a proper water circulation cycle.

[0003] Existing pool water inlet filtration equipment requires disassembly for parts replacement and cleaning after a period of use. When the pool water is dirty and there is a lot of debris, the impurities isolated inside need to be removed frequently during the water pumping process. This cleaning process not only wastes a lot of time, but also cannot be combined with filtration, which is too limiting and results in low overall efficiency. Summary of the Invention

[0004] Given that the above-mentioned water pumping process requires frequent removal of the impurities isolated inside, and that the cleaning process not only wastes a lot of time but also cannot be combined with filtration, resulting in significant limitations and low overall efficiency, this invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a water inlet device for easy replacement of purification materials, comprising: a rectangular shell and a fine filter cartridge, wherein the fine filter cartridge is disposed through the rectangular shell, a rectangular barrier box is disposed inside the rectangular shell, a rectangular loading plate is slidably connected to the exit vertical surface inside the rectangular barrier box, an L-shaped mounting plate is disposed on the upper surface of the rectangular barrier box, and a drive motor is disposed on the inner ring of the L-shaped mounting plate, a set of rectangular fixing plates is also disposed on the upper surface of the rectangular barrier box, and a rotating rod is disposed through the exit of the rectangular fixing plate, and a pair of threaded rods are rotatably connected to the upper surface of the rectangular barrier box, and a transmission wheel is fixedly connected to the section of the pair of rotating rods away from the drive motor.

[0006] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: a pair of meshing bevel gears are fixedly connected to the body of both the threaded rod and the rotating rod, and the same belt is connected between the pair of transmission wheels; and a rectangular mounting plate is fixedly connected to the exit of the rectangular barrier box.

[0007] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: an installation ring is provided through the upper surface of the rectangular mounting plate, and a flexible filter screen is provided at the cross-section of the upper end of the installation ring; a rectangular push-pull plate is provided through the vertical surface of the outer side of the rectangular barrier box, and a rectangular baffle is provided at the vertical surface of the rectangular push-pull plate away from the rectangular barrier box; a push-pull handle is also provided at the exit of the rectangular baffle, and a rubber waterproof sleeve is provided at the end of the rectangular push-pull plate away from the rectangular baffle.

[0008] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: a rectangular isolation plate is fixedly connected to the lower surface of the rectangular loading plate, and a pair of symmetrical U-shaped lifting plates are provided on the upper surface of the rectangular loading plate; a T-shaped connecting rod is provided through the exit of the U-shaped lifting plate, and a rectangular lifting groove is formed at the intersection of the T-shaped connecting rod and the U-shaped lifting plate; a guide rod is provided on the top surface inside the rectangular lifting groove, and the guide rod passes through the T-shaped connecting rod; a memory spring is provided on the upper surface of the T-shaped connecting rod, one end of the memory spring is fixedly connected to the top surface of the rectangular lifting groove; the T-shaped connecting rod is fixedly connected to the rectangular plate, and a rubber water-blocking layer is provided on the exit of the rectangular plate away from the memory spring.

[0009] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: a disc is further provided on the lower surface of the rectangular mounting plate, an arc-shaped docking frame is slidably connected to the lower surface of the disc, a circular opening is also provided through the lower surface of the disc, a pair of arc-shaped guide grooves are also provided on the lower surface of the disc, a storage cylinder is connected through the lower surface of the arc-shaped docking frame, an arc-shaped connecting pipe is connected through the lower surface of the storage cylinder, and the vertical portion of the lower end of the arc-shaped connecting pipe also penetrates the bottom surface of the rectangular barrier box.

[0010] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: a hydraulic telescopic rod is installed on the bottom surface of the rectangular barrier box, a rotating sleeve is fixedly connected to the vertical part of the arc-shaped connecting pipe, and the rotating sleeve and the rectangular barrier box are rotatably connected, a gear disk is fixedly installed on the outer arc surface of the rotating sleeve, and a toothed plate is slidably connected to the lower surface of the rectangular barrier box.

[0011] As a preferred embodiment of the water inlet device for convenient replacement of purification materials according to the present invention, wherein: a circular docking plate is slidably connected to the arc surface inside the fine filter cylinder; a PP cotton swab is provided directly below the circular docking plate; a fixing sleeve is provided on the lower surface of the PP cotton swab; a water supply pipe is connected through the lower surface of the fixing sleeve; a circular ring plate is connected through the lower surface of the water supply pipe; a connector is fixedly connected to the bottom surface outside the fine filter cylinder; a filter carbon rod is rotatably connected to the upper surface of the circular docking plate; a protective cover is provided at the cross-section of the upper end of the fine filter cylinder; and an L-shaped reinforcing rod is also provided on the upper surface of the filter carbon rod.

[0012] The beneficial effects of this invention are: 1. Unlike traditional water inlets, this device does not require disassembling the entire machine for cleaning. The cleaning method is semi-automatic, saving the time of disassembly and parts replacement of traditional equipment. Large residues accumulated inside the device will also be discharged and collected.

[0013] 2. Unlike traditional single-tube filtration, this equipment uses a pair of filter cartridges. While cleaning one of the filter cartridges, the equipment can still perform normal filtration, ensuring uninterrupted filtration. The equipment can also adjust its efficiency according to the pool's capacity and the required filtration capacity, making it suitable for pools of varying sizes and increasing its adaptability.

[0014] 3. The fine filter cartridge of this device is detachable. The protective cover of the device is installed and removed by rotating, which reduces the time wasted in disassembly. The internal filter structure of the fine filter cartridge is temporarily fixed by rotating, so subsequent replacement and installation will not waste time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the internal structure of the rectangular outer shell of the present invention.

[0017] Figure 3 This is a schematic diagram of the PP cotton swab connection structure of the present invention.

[0018] Figure 4This is a schematic diagram of the structure of the filter carbon rod in this invention.

[0019] Figure 5 This is a schematic diagram of the connection structure at the drive motor of the present invention.

[0020] Figure 6 This is a schematic diagram of the flexible filter screen structure of the present invention.

[0021] Figure 7 This is a schematic diagram of the rectangular isolation plate structure of the present invention.

[0022] Figure 8 This is a top view of the arc-shaped docking frame of the present invention.

[0023] Figure 9 This is a top view of the hydraulic telescopic rod of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Rectangular outer shell; 2. Fine filter cartridge; 3. Rectangular barrier box; 5. Rectangular loading plate; 6. Drive motor; 7. Rectangular fixing plate; 8. Threaded rod; 9. Transmission wheel; 10. Bevel gear; 11. Rectangular mounting plate; 12. Mounting ring; 13. Flexible filter screen; 14. Rectangular baffle; 15. Rectangular isolation plate; 16. U-shaped lifting plate; 17. T-shaped connecting rod; 18. Memory spring; 19. Rectangular plate; 20. Disc; 21. Arc-shaped docking frame; 22. Circular opening; 23. Arc-shaped guide groove; 24. Storage cylinder; 25. Arc-shaped connecting pipe; 26. Hydraulic telescopic rod; 27. Rotating sleeve; 28. Gear disc; 29. ​​Toothed plate; 30. Circular docking disc; 31. PP cotton swab; 32. Water supply pipe; 33. Circular ring plate; 34. Connecting joint; 35. Filter carbon rod; 36. Protective cover; 37. L-shaped reinforcing rod. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Example

[0026] Reference Figure 2 , 56-8, representing the first embodiment of the present invention, provides a water inlet device for easy replacement of purification materials, comprising: a rectangular outer shell 1 and a fine filter cartridge 2, the fine filter cartridge 2 being disposed through the rectangular outer shell 1, a rectangular barrier box 3 being disposed inside the rectangular outer shell 1, a rectangular loading plate 5 being slidably connected to the exit vertical surface inside the rectangular barrier box 3, an L-shaped mounting plate being disposed on the upper surface of the rectangular barrier box 3, and a drive motor 6 being disposed on the inner ring of the L-shaped mounting plate, a set of rectangular fixing plates 7 being disposed on the upper surface of the rectangular barrier box 3, and a rotating rod being disposed through the exit of the rectangular fixing plate 7, a pair of threaded rods rotatably connected to the upper surface of the rectangular barrier box 3, and a transmission wheel 9 being fixedly connected to the section of the pair of rotating rods away from the drive motor 6, a circular groove being provided at the intersection of the threaded rod 8 and the rectangular loading plate 5, and a threaded groove being provided on the arc surface inside the circular groove, the threaded groove and the thread on the threaded rod 8 being mutually meshing, and a sealing ring being provided at the lower end of the circular groove.

[0027] Both the threaded rod 8 and the rotating rod are fixedly connected to a pair of meshing bevel gears 10, and both pairs of transmission wheels 9 are connected to the same belt. A rectangular mounting plate 11 is also fixedly connected to the exit inside the rectangular barrier box 3.

[0028] An installation ring 12 is provided through the upper surface of the rectangular mounting plate 11, and a flexible filter screen 13 is provided at the upper section of the installation ring 12. The flexible filter screen 13 is also called a cylindrical filter cloth screen. The cylindrical filter cloth screen is usually woven from fiber material and has a certain flexibility and filtration accuracy. This filter screen generally intercepts larger particles of impurities. A rectangular push-pull plate is provided through the vertical surface of the rectangular barrier box 3, and a rectangular baffle 14 is provided on the vertical surface of the rectangular push-pull plate away from the rectangular barrier box 3. A push-pull handle is also provided at the exit of the rectangular baffle 14, and a rubber waterproof sleeve is provided at the end of the rectangular push-pull plate away from the rectangular baffle 14.

[0029] A rectangular isolation plate 15 is fixedly connected to the lower surface of the rectangular loading plate 5. A pair of symmetrical U-shaped lifting plates 16 are also provided on the upper surface of the rectangular loading plate 5. A T-shaped connecting rod 17 is provided through the exit of the U-shaped lifting plate 16. A rectangular lifting groove is opened at the intersection of the T-shaped connecting rod 17 and the U-shaped lifting plate 16. A guide rod is provided on the top surface inside the rectangular lifting groove, and the guide rod passes through the T-shaped connecting rod 17. A memory spring 18 is also provided on the upper surface of the T-shaped connecting rod 17. One end of the memory spring 18 is fixedly connected to the top surface of the rectangular lifting groove. The T-shaped connecting rod 17 is fixedly connected to the rectangular plate 19, and a rubber water-blocking layer is provided at the exit of the rectangular plate 19 away from the memory spring 18.

[0030] A disc 20 is provided on the lower surface of the rectangular mounting plate 11. An arc-shaped docking frame 21 is slidably connected to the lower surface of the disc 20. A circular opening 22 is also provided through the lower surface of the disc 20. A pair of arc-shaped guide grooves 23 are also provided on the lower surface of the disc 20. A storage tube 24 is connected through the lower surface of the arc-shaped docking frame 21. An arc-shaped connecting pipe 25 is connected through the lower surface of the storage tube 24. The vertical part of the lower end of the arc-shaped connecting pipe 25 also penetrates the bottom surface of the rectangular barrier box 3.

[0031] A hydraulic telescopic rod 26 is installed on the bottom surface of the rectangular barrier box 3. The vertical part of the arc-shaped connecting pipe 25 is fixedly connected to the rotating sleeve 27, and the rotating sleeve 27 and the rectangular barrier box 3 are rotatably connected. A gear disk 28 is fixedly installed on the outer arc surface of the rotating sleeve 27, and a toothed plate 29 is slidably connected to the lower surface of the rectangular barrier box 3.

[0032] In use, first insert the connecting pipe of the water supply pump into the circular water supply sleeve on the rectangular barrier box 3. After a period of use, leaves and large particles of impurities in the water will be blocked inside the pair of flexible filter screens 13. As they accumulate, the filtration efficiency and effect of the flexible filter screens 13 will be greatly reduced. Then, start the drive motor 6. Because the output end of the drive motor 6 is fixedly connected to the rotating rod on the rectangular fixed plate, and the rotating rod and the rectangular fixed plate are in a rotational relationship, the rotation will also start as the drive motor 6 starts. This is because the section of the pair of rotating rods away from the drive motor 6 is fixedly connected to the transmission wheel 9, and the pair of All the drive wheels 9 are connected by the same belt, so when one rotating rod rotates, the other rotating rod will also rotate. A pair of threaded rods 8 are rotatably connected to the upper surface of the rectangular barrier box 3. A pair of meshing bevel gears 10 are fixedly connected to the threaded rods 8 and the rotating rods. Both threaded rods 8 penetrate the rectangular loading plate 5, and a circular groove is formed at the intersection of the threaded rods 8 and the rectangular loading plate 5. A threaded groove is formed on the arc surface inside the circular groove, and this threaded groove meshes with the threads on the threaded rods 8. As the pair of threaded rods 8 rotate, the rectangular loading plate 5 will descend. Before descent, pull the rectangular baffle 14 so that the rectangular plate 19 can smoothly block the outlet of the water pipe. At this time, the rectangular isolation plate 15 on the rectangular loading plate 5 will contact the rectangular mounting plate 11, so that the rectangular isolation plate 15 can clean the flexible filter screen 13 to be cleaned separately. At this time, the hydraulic telescopic rod 26 is activated. Because the extension part of the hydraulic telescopic rod 26 is connected to the toothed plate 29, the toothed plate 29 and the rectangular barrier box 3 are in a sliding relationship, and the guide block on the toothed plate 29 and the teeth of the gear disk 28 are in a meshing relationship, the arc-shaped connecting pipe 25 will drive the arc-shaped docking frame 21 to rotate. At this time, the arc-shaped docking frame 21... Before rotation, the two circular openings 22 are not blocked. So when the arc-shaped docking frame 21 docks, the water pressure is at its maximum as the rectangular loading plate 5 descends. As the arc-shaped docking frame 21 docks, when an outlet appears, the filtered water will move in the opposite direction, allowing the originally filtered water to pass through the flexible filter screen 13. During the rapid flow of water, the garbage and particles originally attached to the inner wall of the flexible filter screen 13 are washed off and fall into the collection frame set below the rectangular barrier box 3. The water in the collection frame will flow out through the hole and then be discharged through the hole opened on the rectangular outer shell 1. Example

[0033] Reference Figure 2 , 68 and 9 are the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a disc 20 is also provided on the lower surface of the rectangular mounting plate 11, an arc-shaped docking frame 21 is slidably connected to the lower surface of the disc 20, a circular opening 22 is also provided through the lower surface of the disc 20, a pair of arc-shaped guide grooves 23 are also provided on the lower surface of the disc 20, a storage tube 24 is connected through the lower surface of the arc-shaped docking frame 21, an arc-shaped connecting pipe 25 is connected through the lower surface of the storage tube 24, and the vertical part of the lower end of the arc-shaped connecting pipe 25 also penetrates the bottom surface of the rectangular barrier box 3.

[0034] A hydraulic telescopic rod 26 is installed on the bottom surface of the rectangular barrier box 3. The vertical part of the arc-shaped connecting pipe 25 is fixedly connected to the rotating sleeve 27, and the rotating sleeve 27 and the rectangular barrier box 3 are rotatably connected. A gear disk 28 is fixedly installed on the outer arc surface of the rotating sleeve 27, and a toothed plate 29 is slidably connected to the lower surface of the rectangular barrier box 3.

[0035] When in use, follow the operating steps in Example 1. After the arc-shaped docking frame 21 has rotated, the other disc 20 is still open. When one of the soft filters 13 is in the cleaning state, the dirty water will enter the soft filter 13 that does not need to be cleaned through the other circular opening 22 and will eventually be filtered by the soft filter 13.

[0036] The remaining structure is the same as that in Example 1. Example

[0037] Reference Figure 2-4 This is the first embodiment of the present invention, which provides a water inlet device for easy replacement of purification materials. A circular docking plate 30 is slidably connected to the arc surface inside the fine filter cylinder 2. A PP cotton swab 31 is provided directly below the circular docking plate 30, and a fixing sleeve is provided on the lower surface of the PP cotton swab 31. A water supply pipe 32 is connected through the lower surface of the fixing sleeve. A circular ring plate 33 is connected through the lower surface of the water supply pipe 32. A connector 34 is fixedly connected to the bottom surface of the outside of the fine filter cylinder 2. A filter carbon rod 35 is rotatably connected to the upper surface of the circular docking plate 30. A protective cover 36 is provided at the cross-section of the upper end of the fine filter cylinder 2. An L-shaped reinforcing rod 37 is also provided on the upper surface of the filter carbon rod 35. A rectangular groove is provided at the intersection of the L-shaped reinforcing rod 37 and the filter carbon rod 35.

[0038] In use, first manually hold the U-shaped handle on the protective cover 36 and rotate it. As the protective cover 36 rotates, pull it out when the rotation is complete. Then move the L-shaped reinforcing rod 37 towards the center of the filter carbon rod 35. Then take out the wrench, clamp the L-shaped reinforcing rod 37, and rotate it. Because the filter carbon rod 35 and the circular docking plate 30 are rotatably connected, the filter carbon rod 35 can be removed by rotating it. Then take out the L-shaped hook to remove the docking plate 30. Then rotate the PP cotton rod 31 as a whole using the pair of round rods set on it. Because the PP cotton rod 31 and the docking connector 34 are also rotatably connected, the PP cotton rod 31 can be removed by rotating it.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A water inlet device that facilitates the replacement of purification materials, comprising: A rectangular shell (1) and a fine filter cartridge (2) are characterized in that: a fine filter cartridge (2) is provided through the rectangular shell (1), a rectangular barrier box (3) is provided inside the rectangular shell (1), a rectangular loading plate (5) is slidably connected to the exit vertical surface inside the rectangular barrier box (3), an L-shaped mounting plate is provided on the upper surface of the rectangular barrier box (3), and a drive motor (6) is provided on the inner ring of the L-shaped mounting plate, a set of rectangular fixing plates (7) is also provided on the upper surface of the rectangular barrier box (3), and a rotating rod is provided through the exit of the rectangular fixing plate (7), a pair of threaded rods (8) are rotatably connected to the upper surface of the rectangular barrier box (3), and a transmission wheel (9) is fixedly connected to the section of the pair of rotating rods away from the drive motor (6).

2. The water inlet device for convenient replacement of purification materials according to claim 1, characterized in that: Both the threaded rod (8) and the rotating rod are fixedly connected to a pair of meshing bevel gears (10), and both of the transmission wheels (9) are connected to the same belt. The rectangular barrier box (3) is also fixedly connected to a rectangular mounting plate (11) at the exit.

3. The water inlet device for convenient replacement of purification materials according to claim 2, characterized in that: An installation ring (12) is provided through the upper surface of the rectangular mounting plate (11), and a flexible filter screen (13) is provided at the cross section of the upper end of the installation ring (12). A rectangular push-pull plate is provided through the vertical surface of the rectangular barrier box (3), and a rectangular baffle (14) is provided at the vertical surface of the rectangular push-pull plate away from the rectangular barrier box (3). A push-pull handle is also provided at the exit of the rectangular baffle (14), and a rubber waterproof sleeve is provided at the end of the rectangular push-pull plate away from the rectangular baffle (14).

4. The water inlet device for convenient replacement of purification materials according to claim 1, characterized in that: A rectangular isolation plate (15) is fixedly connected to the lower surface of the rectangular loading plate (5). A pair of symmetrical U-shaped lifting plates (16) are also provided on the upper surface of the rectangular loading plate (5). A T-shaped connecting rod (17) is provided through the exit of the U-shaped lifting plate (16). A rectangular lifting groove is provided at the intersection of the T-shaped connecting rod (17) and the U-shaped lifting plate (16). A guide rod is provided on the top surface inside the rectangular lifting groove. The guide rod passes through the T-shaped connecting rod (17). A memory spring (18) is also provided on the upper surface of the T-shaped connecting rod (17). One end of the memory spring (18) is fixedly connected to the top surface of the rectangular lifting groove. The T-shaped connecting rod (17) is fixedly connected to the rectangular plate (19). A rubber water-blocking layer is provided at the exit of the rectangular plate (19) away from the memory spring (18).

5. The water inlet device for convenient replacement of purification materials according to claim 2, characterized in that: A disc (20) is also provided on the lower surface of the rectangular mounting plate (11). An arc-shaped docking frame (21) is slidably connected to the lower surface of the disc (20). A circular opening (22) is also provided through the lower surface of the disc (20). A pair of arc-shaped guide grooves (23) are also provided on the lower surface of the disc (20). A storage tube (24) is connected through the lower surface of the arc-shaped docking frame (21). An arc-shaped connecting pipe (25) is connected through the lower surface of the storage tube (24). The vertical part of the lower end of the arc-shaped connecting pipe (25) also penetrates the bottom surface of the rectangular barrier box (3).

6. The water inlet device for convenient replacement of purification materials according to claim 5, characterized in that: A hydraulic telescopic rod (26) is installed on the bottom surface of the rectangular barrier box (3). A rotating sleeve (27) is fixedly connected to the vertical part of the arc-shaped connecting pipe (25). The rotating sleeve (27) and the rectangular barrier box (3) are rotatably connected. A gear disk (28) is fixedly installed on the outer arc surface of the rotating sleeve (27). A toothed plate (29) is slidably connected to the lower surface of the rectangular barrier box (3).

7. The water inlet device for convenient replacement of purification materials according to claim 1, characterized in that: A circular docking plate (30) is slidably connected to the arc surface inside the fine filter cylinder (2). A PP cotton rod (31) is provided directly below the circular docking plate (30), and a fixing sleeve is provided on the lower surface of the PP cotton rod (31). A water supply pipe (32) is connected through the lower surface of the fixing sleeve. A circular ring plate (33) is connected through the lower surface of the water supply pipe (32). A connector (34) is fixedly connected to the bottom surface outside the fine filter cylinder (2). A filter carbon rod (35) is rotatably connected to the upper surface of the circular docking plate (30). A protective cover (36) is provided at the cross-section of the upper end of the fine filter cylinder (2). An L-shaped reinforcing rod (37) is also provided on the upper surface of the filter carbon rod (35).

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