Filter element convenient to disassemble and assemble
The quick-release assembly design solves the problem of inconvenient disassembly and assembly of water purifier filter cartridges, enabling rapid replacement of filter cartridges and improving replacement efficiency and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DAQING BOJIE TECHNOLOGY CO LTD
- Filing Date
- 2025-03-13
- Publication Date
- 2026-05-19
AI Technical Summary
The existing connection method between the outer shell and the cover of the water purifier filter cartridge makes disassembly and assembly inconvenient, time-consuming, and labor-intensive, and cannot be replaced efficiently.
It adopts quick-release components, including slots, insert rings, locking blocks, return springs, and push plates, to achieve quick installation and removal of the outer shell and cover. Through the matching of the slots and insert rings and the elastic connection of the locking blocks, and with the cooperation of the return springs and push plates, quick locking and separation are achieved.
It enables quick installation and removal of filter cartridges, saving time and effort, improving replacement efficiency, and is more convenient than traditional connection methods.
Smart Images

Figure CN224252225U_ABST
Abstract
Description
Technical Field
[0001] This utility model provides a filter element that is easy to install and disassemble, belonging to the technical field of water purification filter elements. Background Technology
[0002] Water is an essential component of all living organisms and an indispensable part of life. Although water resources are now abundant, most of the water cannot be used directly. People's requirements for water quality are constantly increasing, and the use of water purification equipment is becoming more and more common. One of the key components of water purification equipment is the filter element.
[0003] Existing water purifier filter cartridges can basically meet normal usage needs. The filter cartridge is housed in the space between the outer casing and the cover. Currently, to ensure water purification functionality, the filter cartridge usually needs to be replaced periodically. However, because the existing connection and fixing methods between the outer casing and the cover are usually threaded or bolted, disassembling and replacing the filter cartridge is not convenient or quick, relatively time-consuming and laborious, and cannot efficiently complete the filter cartridge replacement work. Therefore, this utility model provides a filter cartridge that is easy to disassemble and assemble. Utility Model Content
[0004] The technical problem solved by this utility model is that the outer shell and the cover are usually connected by threaded screws or mounting bolts, which makes it inconvenient and quick to disassemble and replace the filter element, and relatively time-consuming and laborious, making it impossible to efficiently complete the filter element replacement work.
[0005] To solve the technical problem, the technical solution provided by this utility model is as follows: a filter element that is easy to disassemble and assemble, including a shell, a cover, and a filter element placed inside the shell and the cover. The top of the shell is provided with a slot, and the bottom of the cover is provided with a plug ring that matches the slot. A quick-release assembly is provided between the slot and the plug ring. The quick-release assembly includes multiple grooves formed on the outer wall of the plug ring. A locking block is elastically connected in the groove. The lower end of the locking block has a beveled surface. The inner side wall of the slot is provided with a positioning groove that matches the locking block. A push plate is slidably connected in the positioning groove. A pull rod that extends out of the shell is provided on one side wall of the push plate. The end of the pull rod is provided with a handle.
[0006] Furthermore, the bottom of the insertion ring is provided with a sealing ring that fits into the bottom of the slot.
[0007] Furthermore, a return spring is fixedly connected between the bottom wall of the groove and the side wall of the card block.
[0008] Furthermore, there are four grooves, which are arranged in a cross shape.
[0009] Furthermore, the card block is slidably connected to the inner wall of the groove and the positioning groove, and the two inner walls of the positioning groove are symmetrically provided with limiting rails that match the side wall of the push plate, and the two ends of the limiting rails are provided with stops.
[0010] Furthermore, the side wall of the push plate is provided with a push head for pushing the block, and the distance between the stop head and the port of the positioning groove away from the handle is the same as the thickness of the push head.
[0011] The beneficial effects of this utility model are:
[0012] With the quick-release assembly, the locking block and return spring work together to press the locking block into the groove during installation, and then it rebounds and returns to the positioning groove, enabling quick installation of the outer shell and the cover. During disassembly, the locking block is disengaged from the positioning groove, causing the insert ring to disconnect from the slot. Then the outer shell is moved downwards, allowing for quick disassembly and separation of the outer shell and the cover. Compared to the traditional connection between the outer shell and the cover via threads or bolts, disassembly and assembly are more convenient and faster, enabling more efficient replacement of the filter element and saving time and effort. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .
[0014] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .
[0015] Figure 3 This is a schematic diagram of the outer shell structure of this utility model.
[0016] Figure 4 This is a schematic diagram of the shell cover structure of this utility model.
[0017] Figure 5 This is a partial planar schematic diagram of the present invention.
[0018] 1. Outer shell; 2. Shell cover; 3. Filter element; 4. Slot; 5. Insert ring; 6. Locking block; 7. Positioning groove; 8. Push plate; 9. Pull rod; 10. Handle; 11. Sealing ring; 12. Return spring; 13. Limit rail; 14. Stop; 15. Push head; 16. Groove. Detailed Implementation
[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.
[0020] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.
[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0022] According to the appendix Figure 1 , 2 As shown in Figures 3, 4, and 5: This utility model provides a filter element that is easy to assemble and disassemble: it includes a housing 1, a cover 2, and a filter element 3 placed inside the housing 1 and the cover 2. The top of the housing 1 is provided with a slot 4, and the bottom of the cover 2 is provided with a ring 5 that matches the slot 4. A quick-release assembly is provided between the slot 4 and the ring 5. The quick-release assembly includes multiple grooves 16 formed on the outer wall of the ring 5. A locking block 6 is elastically connected in the groove 16. A return spring 12 is fixedly connected between the bottom wall of the groove 16 and the side wall of the locking block 6. The lower end of the locking block 6 has a beveled surface. In the initial state, the beveled surface of the locking block 6 is placed outside the groove 16. The inner side wall of the slot 4 is provided with a positioning groove 7 that matches the locking block 6. The locking block 6 is slidably connected to the inner side wall of the groove 16 and the positioning groove 7. During installation... Place the new filter element 3 inside the outer casing 1. Hold the casing cover 2 and move it downwards to insert the insertion ring 5 into the slot 4. During the insertion process, the locking block 6 is squeezed by the inner wall of the slot 4. Under the action of the inclined plane, the locking block 6 moves into the groove 16 until the locking block 6 moves into the groove 16 and does not interfere with the inner wall of the slot 4. At this time, the return spring 12 is compressed. When the insertion ring 5 is fully inserted into the slot 4, the locking block 6 and the positioning groove 7 are at the same height. Slightly rotate the outer casing 1 so that the positioning groove 7 rotates to be in communication with the groove 16. At this time, the return spring 12, which is in a compressed state, rebounds and resets, thereby driving the locking block 6 to be inserted into the positioning groove, thereby locking the insertion ring 5 and the slot 4 together, realizing the quick installation of the outer casing 1 and the casing cover 2.
[0023] As per the instruction manual Figure 3 , 4As shown in Figure 5: There are four grooves 16 arranged in a cross shape. A push plate 8 is slidably connected inside the positioning groove 7. A pull rod 9 protrudes from the outer shell 1 on one side wall of the push plate 8. A handle 10 is provided at the end of the pull rod 9. The two inner side walls of the positioning groove 7 are symmetrically provided with limiting rails 13 that match the side walls of the push plate 8. Stops 14 are provided at both ends of the limiting rails 13. A push head 15 for pushing the locking block 6 is provided on the side wall of the push plate 8. The distance between the stop head 14 away from the handle 10 and the port of the positioning groove 7 is the same as the thickness of the push head 15. When disassembly is required, the operator presses the push head 15 with the thumbs and middle fingers of both hands respectively. The handle 10 is arranged in a cross shape. The other fingers grip the outer casing 1 and press the handle 10 firmly. This causes the pull rod 9, push plate 8, and push head 15 to move inward. The push head 15 causes the locking block 6 to move into the groove 16. When the push plate 8 moves to abut against the stop head 14, it can no longer move the push head 15. At this time, the push head 15 is at the end of the positioning groove 7 and presses the locking block 6 into the groove 16. Slightly rotate the outer casing 1 so that the positioning groove 7 is no longer connected to the groove 16, so that the insertion ring 5 is disconnected from the slot 4. Then move the outer casing 1 downward to quickly disassemble and separate the outer casing 1 from the casing cover 2.
[0024] As per the instruction manual Figure 5 As shown: The bottom of the insertion ring 5 is provided with a sealing ring 11 that fits into the bottom of the slot 4, which serves to seal the seal.
[0025] The principle of this utility model
[0026] During installation, place the new filter element 3 inside the outer casing 1, hold the casing cover 2 and move it downwards to fully insert the insertion ring 5 into the slot 4. The sealing ring 11 seals the area. During insertion, the locking block 6 is pressed into the groove 16, and the return spring 12 is compressed. Slightly rotate the outer casing 1 to rotate the positioning groove 7 to align with the groove 16. The compressed return spring 12 rebounds and returns to its original position, thereby driving the locking block 6 into the positioning groove. This locks the insertion ring 5 into the slot 4, enabling quick installation of the outer casing 1 and casing cover 2. During disassembly, the operator uses their thumbs and middle fingers to press the cross-shaped... Hold handle 10 with the other fingers and grip outer shell 1. Press handle 10 firmly to move pull rod 9, push plate 8, and push head 15 inward. Move push head 15 to the end of positioning groove 7 and press the locking block 6 into groove 16. Slightly rotate outer shell 1 so that positioning groove 7 is no longer connected to groove 16, thus disconnecting insertion ring 5 from slot 4. Then move outer shell 1 downward to quickly disassemble outer shell 1 from shell cover 2. Compared with the traditional connection between outer shell 1 and shell cover 2 via threaded connection and bolt fixing, disassembly and assembly are more convenient and faster, and the replacement of filter element 3 can be completed more efficiently, saving time and effort.
[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A filter element that is easy to disassemble and assemble, comprising a housing (1), a cover (2), and a filter element (3) disposed within the housing (1) and the cover (2), characterized in that: The top of the outer shell (1) is provided with a slot (4), and the bottom of the cover (2) is provided with a plug ring (5) that matches the slot (4). A quick-release assembly is provided between the slot (4) and the plug ring (5). The quick-release assembly includes multiple grooves (16) opened on the outer wall of the plug ring (5). A locking block (6) is elastically connected in the groove (16). The lower end of the locking block (6) has a beveled surface. The inner side wall of the slot (4) is provided with a positioning groove (7) that matches the locking block (6). A push plate (8) is slidably connected in the positioning groove (7). A pull rod (9) that protrudes from the outer shell (1) is provided on one side wall of the push plate (8). A handle (10) is provided at the end of the pull rod (9).
2. The filter element that is easy to install and disassemble according to claim 1, characterized in that: The bottom of the insert ring (5) is provided with a sealing ring (11) that fits into the bottom of the slot (4).
3. The filter element that is easy to install and disassemble according to claim 1, characterized in that: A return spring (12) is fixedly connected between the bottom wall of the groove (16) and the side wall of the block (6).
4. The filter element that is easy to install and disassemble according to claim 1, characterized in that: The groove (16) is provided in four places, and the four grooves (16) are arranged in a cross shape.
5. The filter element that is easy to install and disassemble according to claim 1, characterized in that: The card block (6) is slidably connected to the inner wall of the groove (16) and the positioning groove (7). The two inner walls of the positioning groove (7) are symmetrically provided with limiting rails (13) that match the side wall of the push plate (8). The two ends of the limiting rails (13) are provided with stops (14).
6. The filter element that is easy to install and disassemble according to claim 5, characterized in that: The side wall of the push plate (8) is provided with a push head (15) for pushing the card block (6), and the distance between the port of the stop (14) away from the handle (10) and the port of the positioning groove (7) is the same as the thickness of the push head (15).