A pre-filter double-scrubbing device
By designing a dual scraping device for the pre-filter, the problem of filter frame clogging is solved by utilizing the cooperation of the drive component and the scraping component. This enables effective scraping and disassembly of the filter frame, ensuring smooth water filtration and convenient equipment maintenance.
Patent Information
- Application Number
- CN202521917937.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-08
AI Technical Summary
Existing pre-filters are prone to clogging when filtering longer residues such as vegetable leaves.
A dual scraping device for a pre-filter was designed, comprising a drive assembly, a filter assembly, a bottom scraping assembly, and a top scraping assembly. The drive motor drives gears to mesh, thereby scraping the filter frame from top to bottom to prevent clogging.
It effectively prevents the filter frame from clogging during use, ensures smooth water flow, and facilitates the disassembly and replacement of the filter frame.
Smart Images

Figure CN224672226U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment, and in particular to a dual scraping device for a pre-filter. Background Technology
[0002] Secondary pollution from rust, silt, and other contaminants in urban water supply pipes can degrade water quality in homes, cause malfunctions in water-using appliances, shorten the lifespan of other water-using appliances, and even pose significant safety hazards. Therefore, it is necessary to install pre-filters to improve water quality and protect household water-using appliances.
[0003] Chinese Patent Publication No. CN214344899U discloses a pre-filter dual scraping and washing device, including a bottle body, an outer support, a filter element, and a washing strip. The outer support is installed in the inner cavity of the bottle body and includes a first outer support and a second outer support. The first outer support is rotatably installed on the second outer support. The outer wall of the first outer support is provided with a receiving groove, and the bottom wall of the receiving groove is provided with perforations. However, the existing device still has some shortcomings. When using a pre-filter, it is usually necessary to filter vegetable leaves or other food residues. However, vegetable leaves and other food residues are relatively long, so if there are many filter frames, it is easy to cause the filter frames to become clogged. Therefore, we propose a pre-filter dual scraping and washing device to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a dual scraping and washing device for a pre-filter to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A pre-filter dual scraping device includes a filter cylinder, a connecting component mounted on the upper surface of the filter cylinder, a protective component mounted on the outer surface of the filter cylinder, a driving component mounted inside the filter cylinder, a filter component mounted above the driving component, a bottom scraping component mounted on the bottom surface of the filter component, and a top scraping component mounted on the upper surface of the filter component.
[0006] In a further embodiment, the drive assembly includes a mounting frame and a drive motor. The drive motor is located on the outer surface of the filter cartridge, and the mounting frame is located on the inner wall of the filter cartridge. A connecting rod is mounted inside the mounting frame via a bearing. A first gear is mounted on the output end of the drive motor and the right end of the connecting rod, and the two first gears mesh with each other.
[0007] In a further embodiment, the filter assembly includes a mounting plate located on the inner wall of the filter cartridge, and a filter frame is bolted to the upper surface of the mounting plate.
[0008] In a further embodiment, the bottom scraping assembly includes a support rod, the bottom end of which is connected to the upper surface of the mounting frame via a bearing, and a cutting blade is mounted on the top end of the support rod. The upper surface of the cutting blade contacts the bottom surface of the filter frame. A second gear is mounted on both the bottom end of the support rod and the outer surface of the connecting rod, and the two second gears mesh with each other.
[0009] In a further embodiment, the top scraping assembly includes a threaded rod located at the top of the support rod, the top of the threaded rod passing through the filter frame and extending above the filter frame, a scraper being fitted onto the outer surface of the threaded rod, and a fixing threaded cap being threadedly connected to the top of the threaded rod.
[0010] In a further embodiment, the protective component includes a protective frame located on the outer surface of the filter cartridge, and the outer surface of the protective frame has heat dissipation windows.
[0011] In a further embodiment, a connecting plate is installed at both the top and bottom of the filter cylinder, and multiple connecting holes are provided on the outer surface of both connecting plates.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model discloses a pre-filter dual scraping and washing device. Through the filter components installed in the device, the drainage can be filtered to remove vegetable leaves and other residues. During the filtration process, the drive component can drive the scraping and washing components installed on the upper and lower surfaces of the filter frame to rotate, thereby scraping and washing the upper and lower surfaces of the filter frame. Therefore, this device can effectively prevent the filter frame from clogging during use. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of a dual scraping and washing device for a pre-filter.
[0014] Figure 2 This is a schematic diagram of the front section structure of a dual scraping and washing device for a pre-filter.
[0015] Figure 3 A dual scraping and washing device for a pre-filter Figure 2 Enlarged structural diagram at point A in the middle.
[0016] Figure 4 This is a top view schematic diagram of a dual-scraping device for a pre-filter.
[0017] Figure 5 This is a schematic diagram of the overhead section of a dual-scraping device for a pre-filter.
[0018] In the diagram: 1. Filter cartridge; 2. Connecting assembly; 3. Protective assembly; 4. Connecting hole; 5. Filter assembly; 6. Top scraping assembly; 7. Bottom scraping assembly; 8. Drive assembly; 9. Support rod; 10. Scraper; 11. Heat dissipation window; 12. Protective frame; 13. Mounting frame; 14. Bearing; 15. Filter frame; 16. Mounting plate; 17. Drive motor; 18. First gear; 19. Second gear; 20. Fixed threaded cap; 21. Threaded rod; 22. Connecting plate; 23. Cutting blade; 24. Connecting rod. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-5 In this utility model, a pre-filter dual scraping device includes a filter cylinder 1, a connecting component 2 installed on the upper surface of the filter cylinder 1, a protective component 3 installed on the outer surface of the filter cylinder 1, a driving component 8 installed inside the filter cylinder 1, a filter component 5 installed above the driving component 8, a bottom scraping component 7 installed on the bottom surface of the filter component 5, and a top scraping component 6 installed on the upper surface of the filter component 5. The filter component 5 includes a mounting plate 16, which is located on the inner wall of the filter cylinder 1. A filter frame 15 is installed on the upper surface of the mounting plate 16 by bolts. Through the filter component 5 installed in the device, the drainage can be filtered, thereby filtering out vegetable leaves and other residues through the filter frame 15.
[0021] The drive assembly 8 includes a mounting frame 13 and a drive motor 17. The drive motor 17 is located on the outer surface of the filter cylinder 1, and the mounting frame 13 is located on the inner wall of the filter cylinder 1. A connecting rod 24 is mounted inside the mounting frame 13 via a bearing 14. A first gear 18 is mounted on the output end of the drive motor 17 and the right end of the connecting rod 24. The two first gears 18 mesh with each other. The bottom scraping assembly 7 includes a support rod 9. The bottom end of the support rod 9 is connected to the upper surface of the mounting frame 13 via a bearing 14. A cutting blade 23 is mounted on the top end of the support rod 9. The upper surface of the cutting blade 23 contacts the bottom surface of the filter frame 15. A second gear 19 is mounted on the bottom end of the support rod 9 and the outer surface of the connecting rod 24. The two second gears 19 mesh with each other. Through the drive motor 17, the cutting blade 23 in the bottom scraping assembly 7 can be rotated by the meshing of the two sets of gears, thereby cutting the residue below the filter frame 15.
[0022] The top scraping assembly 6 includes a threaded rod 21, which is located at the top of the support rod 9. The top of the threaded rod 21 passes through the filter frame 15 and extends above the filter frame 15. A scraper 10 is fitted on the outer surface of the threaded rod 21, and a fixing threaded cap 20 is threadedly connected to the top of the threaded rod 21. The scraper 10 can scrape and wash the residue above the filter frame 15 to prevent the filter frame 15 from becoming clogged. The filter frame 15 can be easily disassembled by screwing on the fixing threaded cap 20.
[0023] The protective component 3 includes a protective frame 12, which is located on the outer surface of the filter cartridge 1. The outer surface of the protective frame 12 is provided with heat dissipation windows 11, which can dissipate heat for the drive motor 17 inside the protective frame 12. Both the top and bottom of the filter cartridge 1 are equipped with connecting plates 22. The outer surfaces of the two connecting plates 22 are provided with multiple connecting holes 4, which facilitates the connection of the device to the pipeline.
[0024] The working principle of this utility model is as follows: In this dual-scraping pre-filter device, the operator first installs the device in a suitable position and connects the filter assembly 5 to the control device. When the device needs to filter, the control device activates the drive assembly 8, which rotates the top scraping assembly 6 and the bottom scraping assembly 7 to scrape the upper and lower surfaces of the filter frame 15. After the device has been used for a period of time, the top scraping assembly 6 is disassembled by unscrewing the fixing thread cap 20, and the filter frame 15 is removed and replaced.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A pre-filter dual scraping and washing device, characterized in that: The filter includes a filter cartridge (1), a connecting component (2) is installed on the upper surface of the filter cartridge (1), a protective component (3) is installed on the outer surface of the filter cartridge (1), a driving component (8) is installed inside the filter cartridge (1), a filter component (5) is installed above the driving component (8), a bottom scraping component (7) is installed on the bottom surface of the filter component (5), and a top scraping component (6) is installed on the upper surface of the filter component (5).
2. The dual scraping and washing device for a pre-filter according to claim 1, characterized in that: The drive assembly (8) includes a mounting frame (13) and a drive motor (17). The drive motor (17) is located on the outer surface of the filter cartridge (1). The mounting frame (13) is located on the inner wall of the filter cartridge (1). A connecting rod (24) is mounted inside the mounting frame (13) via a bearing (14). A first gear (18) is mounted on the output end of the drive motor (17) and the right end of the connecting rod (24). The two first gears (18) mesh with each other.
3. The pre-filter dual scraping device according to claim 1, characterized in that: The filter assembly (5) includes a mounting plate (16) located on the inner wall of the filter cylinder (1), and a filter frame (15) is mounted on the upper surface of the mounting plate (16) by bolts.
4. The dual scraping and washing device for a pre-filter according to claim 1, characterized in that: The bottom scraping assembly (7) includes a support rod (9), the bottom end of which is connected to the upper surface of the mounting frame (13) via a bearing (14), and a cutting blade (23) is installed at the top end of the support rod (9). The upper surface of the cutting blade (23) is in contact with the bottom surface of the filter frame (15). A second gear (19) is installed at the bottom end of the support rod (9) and on the outer surface of the connecting rod (24), and the two second gears (19) mesh with each other.
5. The pre-filter dual scraping device according to claim 1, characterized in that: The top scraping assembly (6) includes a threaded rod (21) located at the top of the support rod (9). The top of the threaded rod (21) passes through the filter frame (15) and extends above the filter frame (15). A scraper (10) is fitted on the outer surface of the threaded rod (21). A fixed threaded cap (20) is threadedly connected to the top of the threaded rod (21).
6. The pre-filter dual scraping device according to claim 1, characterized in that: The protective component (3) includes a protective frame (12), which is located on the outer surface of the filter cartridge (1), and the outer surface of the protective frame (12) is provided with a heat dissipation window (11).
7. A pre-filter dual scraping device according to claim 1, characterized in that: A connecting plate (22) is installed at the top and bottom of the filter cylinder (1), and multiple connecting holes (4) are opened on the outer surface of the two connecting plates (22).
Citation Information
Patent Citations
Pre-filter double-scraping washing device
CN214344899U