A pre-filter with quick replacement of filter cartridges

Abstract

A kind of front filter of quick replacement filter element, including valve body, handle, filter cup and linkage assembly, filter cup is communicated and arranged at the bottom of valve body, handle is arranged at the front of valve body;Handle includes connecting end and fixed end, fixed plate is rotatably arranged on handle;Linkage assembly includes connecting rod, rotary connecting piece and toggle arm, connecting rod includes vertical rod and bottom clamping groove, bottom clamping groove is semicircular frame, bottom clamping groove two ends are respectively provided with a vertical rod, vertical rod top end is forwardly extended and is provided with connecting rod connecting end, filter element is arranged in filter cup, filter cup sidewall upper portion is provided with filter cup installation groove;Valve body top is provided with support seat, support seat left and right ends are hinged with rotary connecting piece bottom end, rotary connecting piece top end is hinged with toggle arm lower end, toggle arm upper end is hinged with the front end of connecting rod connecting end;Handle connecting end is fixedly connected with the middle part of toggle arm;Bottom clamping groove is embedded in filter cup installation groove on filter cup sidewall, fixed block is arranged at the position where fixed plate is close to in the front end of valve body, fixed plate is clamped fixed block when closing.

Description

Technical Field

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

[0002] After prolonged use, impurities carried in the raw water can become trapped in the filter element's mesh, easily causing blockage. Therefore, the filter element needs to be removed and replaced periodically. However, replacing the filter element in existing pre-filters is cumbersome, requiring tools to remove it from inside the filter. Therefore, a pre-filter that allows for easy filter element replacement is urgently needed in the market. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a pre-filter with a quick-replacement filter element, comprising a valve body, a handle, a filter cup, and a linkage assembly. The filter cup is connected to the bottom of the valve body, and the handle is located at the front of the valve body. An inlet and an outlet are respectively located at the left and right ends of the valve body, and sliding guide grooves are provided on the side walls of the valve body below the inlet and outlet. The handle includes a connecting end and a fixed end. The fixed end is provided with a connecting frame, and fixed plates are located at the left and right ends of the connecting frame. The middle part of the fixed plate is rotatably connected to the connecting frame, with the top of the fixed plate located at the top of the connecting frame and the bottom of the fixed plate located on the left and right sides of the connecting frame. A fixed post is provided at the top of the connecting frame, and the fixed post is connected to the top of the fixed plate by a spring. Under normal conditions, the tops of the two fixed plates are close together, and the lower ends of the fixed plates are separated. The linkage assembly includes a connecting rod, a rotating connecting piece, and a toggle arm. The connecting rod includes a vertical rod and a bottom slot. The bottom slot is a semi-circular frame, with a vertical rod at each end. The top of the vertical rod extends forward to form a connecting rod end. Guide rods are also provided at both ends of the bottom slot, with a gap between the guide rods and the vertical rods. A filter element is installed inside the filter cup, and a filter cup mounting groove is provided on the upper part of the side wall of the filter cup. A support seat is provided on the top of the valve body. The left and right ends of the support seat are hinged to the bottom end of the rotating connecting piece. The top end of the rotating connecting piece is hinged to the lower end of the toggle arm, and the upper end of the toggle arm is hinged to the front end of the connecting rod end. The handle connecting end is fixedly connected to the middle of the toggle arm. The bottom slot is embedded in the filter cup mounting groove on the side wall of the filter cup, and the guide rod is embedded in the sliding guide groove and can slide up and down along the sliding guide groove. A fixing block is provided at the front end of the valve body corresponding to the position where the fixing plate approaches, and the fixing block is clamped when the fixing plate approaches.

[0004] Furthermore, the two fixing plates are provided with locking plates facing each other on their upper parts, and locking holes are opened on the opposite side walls of the locking plates. The fixing blocks are provided with outwardly extending locking plates at their ends. When the handle is in a vertical position and the fixing plates are in a natural position, the fixing blocks pass through the locking holes, and the locking plates abut against the fixing plates.

[0005] Furthermore, pressing grooves are formed inward on the left and right sides of the connecting frame, and buttons are set outward on the bottom of the fixing plate corresponding to the pressing grooves, with the button positions extending beyond the left and right sides of the connecting frame.

[0006] Furthermore, the filter cup is provided with a handle and an observation window on its side wall.

[0007] Furthermore, a connecting rod limiting plate is provided behind the valve body, and the connecting rod is disposed between the connecting rod limiting plate and the side wall of the valve body.

[0008] Furthermore, the connecting rod limiting plate is fixedly connected to the side wall of the valve body by screws.

[0009] Furthermore, the connecting end of the handle is provided with an embedded block facing the elbow arm, and the elbow arm is provided with an embedded groove corresponding to the embedded block. The embedded block is embedded in the embedded groove to connect the elbow arm and the connecting end, and the screw passes through the connecting end and the elbow arm to screw in and fix the nut.

[0010] Furthermore, the top side wall of the filter cup and the bottom inner wall of the valve body are provided with matching threads, and the filter cup is screwed and fixed to the valve body.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. Rotating the handle up and down drives the connecting rod to move up and down through the elbow joint, thereby moving the filter cup with the connecting rod. This movement of the handle allows for the installation and removal of the filter cup.

[0013] 2. The filter cup can rotate in the bottom slot. After disassembly or installation, the filter cup can be rotated to screw the filter cup to the valve body, ensuring the sealing of the connection between the filter cup and the valve body.

[0014] 3. A fixing plate is set on the handle, and a fixing block is set on the front end of the valve body corresponding to the fixing plate. When the handle is pulled down to close, the fixing plate clamps and locks the fixing block. The fixing plate can automatically return to its original position by a spring. By pressing the button on the side, the top of the fixing plate rotates outward to release the fixing block, thus realizing the locking and releasing action. Attached Figure Description

[0015] Figure 1 This is an exploded view of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the filter cup and connecting rod structure;

[0017] Figure 3 This is a schematic diagram of the bottom structure of the valve body;

[0018] Figure 4 This is a schematic diagram of the handle structure;

[0019] Figure 5 This is a schematic diagram of the elbow arm structure;

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

[0021] In the diagram, 1. Valve body; 2. Support base; 3. Rotary connecting plate; 4. Toggle arm; 5. Inlet; 6. Outlet; 7. Connecting rod; 8. Sliding guide groove; 9. Handle; 10. Filter element; 11. Filter cup; 12. Connecting rod limiting plate; 13. Bottom slot; 14. Vertical rod; 15. Guide rod; 16. Connecting rod connecting end; 17. Filter cup handle; 18. Observation window; 19. Fixing block; 20. Locking plate; 21. Connecting end; 22. Fixing plate; 23. Spring; 24. Button; 25. Locking plate; 26. Embedding block; 27. Embedding groove; 28. Filter cup mounting groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to embodiments. Specific details will be involved in the following description to ensure a thorough understanding of the present invention. However, the present invention can still be realized without these specific details, meaning that those skilled in the art can more effectively explain the nature of their work to other skilled in the art using these descriptions and statements herein. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the actual scope of protection. All raw materials used in the following embodiments are commercially available products.

[0023] Example 1

[0024] like Figures 1-6As shown, a pre-filter with quick-replacement filter element includes a valve body 1, a handle 9, a filter cup 11, and a linkage assembly. The filter cup 11 is connected to the bottom of the valve body 1, and the handle 9 is located at the front of the valve body 1. An inlet 5 and an outlet 6 are respectively located at the left and right ends of the valve body 1. A sliding guide groove 8 is provided on the side wall of the valve body 1 below the inlet 5 and outlet 6. The handle 9 includes a connecting end 21 and a fixed end. The fixed end is provided with a connecting frame, and fixed plates 22 are provided at the left and right ends of the connecting frame. The middle part of the fixed plate 22 is rotatably connected to the connecting frame, the top of the fixed plate 22 is located at the top of the connecting frame, and the bottom of the fixed plate 22 is located on the left and right sides of the connecting frame. A fixed post is provided at the top of the connecting frame, and the fixed post is connected to the top of the fixed plate 22 by a spring 23. Under normal conditions, the tops of the two fixed plates 22 are close together, and the lower ends of the fixed plates 22 are separated. The linkage assembly includes a connecting rod 7, a rotating connecting piece 3, and an elbow arm 4. The connecting rod 7 includes a vertical rod 14 and a bottom groove 1. 3. The bottom slot 13 is a semi-circular frame. A vertical rod 14 is provided at each end of the bottom slot 13. A connecting rod end 16 extends forward from the top of the vertical rod 14. Guide rods 15 are also provided at both ends of the bottom slot 13, with a gap between the guide rods 15 and the vertical rods 14. A filter element 10 is installed inside the filter cup 11, and a filter cup mounting groove 28 is provided on the upper part of the side wall of the filter cup 11. A support base 2 is provided on the top of the valve body 1, and the left and right ends of the support base 2 are hinged to the bottom end of the rotating connecting piece 3. The top of the rotating connecting piece 3 is hinged to the lower end of the toggle arm 4, and the upper end of the toggle arm 4 is hinged to the front end of the connecting rod connecting end 16; the connecting end of the handle 9 is fixedly connected to the middle of the toggle arm 4; the bottom slot 14 is embedded in the filter cup mounting slot 28 on the side wall of the filter cup 11, and the guide rod 15 is embedded in the sliding guide groove 8 and can slide up and down along the sliding guide groove 8; the front end of the valve body 1 is provided with a fixing block 19 corresponding to the position where the fixing plate 22 is close together, and the fixing plate 22 clamps the fixing block 19 when it is close together.

[0025] Two fixing plates 22 are provided with opposing locking plates 25 on their upper parts. Locking holes are provided on the opposite side walls of the locking plates 25. The fixing block 19 is provided with an outwardly extending locking piece 20 at its end. When the handle 9 is in a vertical position and the fixing plates 22 are in a natural position, the fixing block 19 passes through the locking hole, and the locking piece 20 abuts against the fixing plate 22. Pressing grooves are provided inward on the left and right sides of the connecting frame. Buttons 24 are provided outward on the bottom of the fixing plate 22 corresponding to the pressing grooves, and the button 24 extends beyond the left and right sides of the connecting frame.

[0026] The filter cup 11 is provided with a handle 17 and an observation window 18 on its side wall.

[0027] A connecting rod limiting plate 12 is provided at the rear of the valve body 1, and a connecting rod 7 is disposed between the connecting rod limiting plate 12 and the side wall of the valve body 1. The connecting rod limiting plate 12 is fixedly connected to the side wall of the valve body 1 by screws.

[0028] An embedding block 26 is provided on the side of the connecting end 21 of the handle 9 facing the elbow arm 4. An embedding groove 27 is provided on the elbow arm 4 corresponding to the embedding block 26. The embedding block 26 is embedded in the embedding groove 27 to connect the elbow arm 4 and the connecting end 21. After the screw passes through the connecting end 21 and the elbow arm 4, a fixing nut is screwed in.

[0029] The top side wall of the filter cup 11 and the bottom inner wall of the valve body 1 are provided with matching threads, and the filter cup 11 is screwed and fixed to the valve body 1.

[0030] The handle 9 of this invention rotates up and down, driving the connecting rod 7 to move up and down via the toggle arm 4. This causes the filter cup 11 to move with the connecting rod 7, thus enabling the installation and removal of the filter cup 11 by moving the handle 9. The filter cup 11 can rotate in the bottom slot 14. After removal or installation, rotating the filter cup 11 allows it to be screwed onto the valve body 1, ensuring a tight seal between the filter cup 11 and the valve body 1. A fixing plate 22 is provided on the handle 9, and a fixing block 19 is provided at the front end of the valve body 1 corresponding to the fixing plate 22. When the handle 9 is pulled down to close, the fixing plate 22 clamps and locks the fixing block 19. The fixing plate 22 can automatically return to its original position via a spring 23. By pressing the button 24 on the side, the top of the fixing plate 22 rotates outward to release the fixing block 19, thus achieving the locking and unlocking action.

[0031] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A pre-filter with a quick-change filter element, characterized in that: The device includes a valve body, a handle, a filter cup, and a linkage assembly. The filter cup is connected to the bottom of the valve body, and the handle is located at the front of the valve body. An inlet and an outlet are respectively located at the left and right ends of the valve body, and sliding guide grooves are provided on the side walls of the valve body below the inlet and outlet. The handle includes a connecting end and a fixed end. The fixed end has a connecting frame, and fixed plates are located at both ends of the connecting frame. The middle part of the fixed plate is rotatably connected to the connecting frame, with the top of the fixed plate located at the top of the connecting frame and the bottom of the fixed plate located on the left and right sides of the connecting frame. A fixed post is located at the top of the connecting frame, and the fixed post is connected to the top of the fixed plate by a spring. Under normal conditions, the tops of the two fixed plates are close together, and the lower ends of the fixed plates are separated. The linkage assembly includes a connecting rod, a rotating connecting plate, and a toggle arm. The connecting rod includes a vertical rod and a bottom groove. The bottom slot is a semi-circular frame with a vertical rod at each end. A connecting rod extends forward from the top of each vertical rod, and guide rods are also provided at both ends of the bottom slot, with a gap between the guide rods and the vertical rods. A filter element is installed inside the filter cup, and a filter cup mounting groove is provided on the upper part of the filter cup's side wall. A support base is provided on the top of the valve body, with its left and right ends hinged to the bottom of the rotating connecting piece. The top of the rotating connecting piece is hinged to the lower end of the toggle arm, and the upper end of the toggle arm is hinged to the front end of the connecting rod. The handle connecting end is fixedly connected to the middle of the toggle arm. The bottom slot is embedded in the filter cup mounting groove on the side wall of the filter cup, and the guide rod is embedded in the sliding guide groove and can slide up and down along the sliding guide groove. A fixing block is provided at the front end of the valve body corresponding to the position where the fixing plate approaches, clamping the fixing block when the fixing plate approaches.

2. The pre-filter with quick-replacement filter element as described in claim 1, characterized in that: The two fixing plates are provided with locking plates facing each other on their upper parts, and locking holes are opened on the opposite side walls of the locking plates. The fixing blocks are provided with outwardly extending locking plates at their ends. When the handle is in a vertical position and the fixing plates are in a natural position, the fixing blocks pass through the locking holes and the locking plates abut against the fixing plates.

3. A pre-filter with a quick-change filter element as described in claim 2, characterized in that: The left and right sides of the connecting frame have inward pressing grooves, and the bottom of the fixing plate has buttons that extend outwards from the pressing grooves, with the button positions extending beyond the left and right sides of the connecting frame.

4. A pre-filter with a quick-change filter element as described in claim 1, characterized in that: The filter cup is provided with a handle and an observation window on its side wall.

5. A pre-filter with a quick-change filter element as described in claim 1, characterized in that: A connecting rod limiting plate is provided behind the valve body, and the connecting rod is located between the connecting rod limiting plate and the side wall of the valve body.

6. A pre-filter with a quick-change filter element as described in claim 5, characterized in that: The connecting rod limiting plate is fixedly connected to the side wall of the valve body by screws.

7. A pre-filter with a quick-change filter element as described in claim 1, characterized in that: An insert block is provided on the side of the handle's connecting end facing the elbow arm. An insert groove is provided on the elbow arm corresponding to the insert block. The insert block is embedded in the insert groove to connect the elbow arm and the connecting end. A screw passes through the connecting end and the elbow arm and is screwed into a fixing nut.

8. A pre-filter with a quick-change filter element as described in claim 1, characterized in that: The top side wall of the filter cup and the bottom inner wall of the valve body are provided with matching threads, and the filter cup is screwed and fixed to the valve body.

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