Pre-filter with double filter screens
The dual-filter pre-filter design solves the problem that a single-filter design cannot effectively filter fine particles, thus improving the clarity and purity of the water, and the filter is easy to replace.
Patent Information
- Application Number
- CN202422965854.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing pre-filters use a single filter screen design, which cannot effectively filter out tiny particles and impurities such as rust in the water, resulting in the filtered water still containing pollutants.
It adopts a dual-filter design, including filter screen one and filter screen two. The water flowing in through the inlet pipe passes through filter screen one and filter screen two in succession. The purified water is discharged through the channel. The filter screens can be easily replaced by pulling the cylinder column and cover plate structure.
It achieves more effective filtration of impurities and suspended solids in the water, ensuring the clarity and purity of the output water, and the filter is easy to replace.
Smart Images
Figure CN223542539U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter technology, and in particular to a dual-screen pre-filter. Background Technology
[0002] A pre-filter is a filtration device installed at the beginning of a tap water pipe, usually after the water meter and before all water-using appliances. Its main function is to filter out large particulate impurities in tap water, such as sediment, rust, insect eggs, and red worms, thereby protecting downstream water-using appliances, such as water purifiers, water heaters, and washing machines, from these impurities.
[0003] Many existing pre-filters use a single-layer filter design. A single-layer filter has limited effect on improving water quality and cannot completely remove impurities such as tiny particles, rust, and sediment from the water, resulting in filtered water still containing certain pollutants. Utility Model Content
[0004] The purpose of this invention is to provide a dual-screen pre-filter that improves water quality and solves the problem of poor water quality in the prior art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A dual-screen pre-filter includes a bottom cover, an inlet pipe fixedly connected to the left side of the bottom cover, an outlet pipe fixedly connected to the right side of the bottom cover, multiple crossbars arranged in a circular array on the inner wall of the bottom cover, and a connecting seat fixedly connected to the ends of the multiple crossbars. The end of the inlet pipe communicates with the interior of the connecting seat, and a groove is provided at the upper end of the connecting seat. A housing is located on the upper end of the bottom cover, and a cylindrical column is provided inside the housing. Multiple through slots are arranged in a circular array on the side wall of the cylindrical column, and filter screen one and filter screen two are respectively provided inside the side wall of the cylindrical column. The lower end of the cylindrical column is slidably connected to the groove.
[0007] Preferably, an upper seat is fixedly connected to the top of the housing, and a groove is provided on the inner wall of the upper seat. The groove is a ring, and the upper end of the cylinder is slidably connected to the inside of the upper seat.
[0008] Preferably, the cylindrical column sidewall is provided with an elastic element, which is annular and cooperates with the slot.
[0009] Preferably, the inner wall of the cylindrical column is provided with a cavity, the cavity is connected to the through groove, and the cavity is slidably connected to filter screen one and filter screen two respectively.
[0010] Preferably, a cover plate is threadedly rotatably connected to the lower end of the cavity, and the lower end of the cover plate is provided with two slots, the lower end of the cover plate fitting into the bottom of the groove.
[0011] Preferably, both the bottom cover sidewall and the shell sidewall are fixedly connected with flanges, and the two flanges are fixedly connected by multiple bolts.
[0012] Compared with the prior art, the advantages of this utility model are:
[0013] 1. Water flows through the inlet pipe into the connecting seat, and simultaneously flows upward into the cylinder. It is filtered and purified by filter screens one and two, then the purified water is guided through a channel into the housing and then into the bottom cover, finally exiting through the outlet pipe. This dual-layer filtration effectively removes impurities, suspended solids, and particulate matter from the water, ensuring the clarity and purity of the output water.
[0014] 2. Pull the cylinder forcefully to deform the elastic element and slide it out of the slot, thereby removing the cylinder from the housing. Then, unscrew the cover plate from the inside of the cavity, and pull out filter screen one and filter screen two from the inside of the cavity to replace filter screen one and filter screen two. Attached Figure Description
[0015] Figure 1 This is a front view of the external structure of a dual-screen pre-filter proposed in this utility model.
[0016] Figure 2 This is a top sectional view of the structure of a dual-screen pre-filter proposed in this utility model.
[0017] Figure 3 This is a front cross-sectional view of a dual-screen pre-filter proposed in this utility model.
[0018] Figure 4 for Figure 3 A schematic diagram of the structure of part A.
[0019] Figure 5 for Figure 3 A schematic diagram of the structure of part B.
[0020] In the diagram: 1. Bottom cover, 2. Inlet pipe, 3. Outlet pipe, 4. Crossbar, 5. Connecting seat, 6. Groove, 7. Housing, 8. Upper seat, 9. Slot, 10. Cylindrical column, 11. Cavity, 12. Through groove, 13. Filter screen one, 14. Filter screen two, 15. Cover plate, 16. Elastic element, 17. Flange. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figure 1-5 A dual-screen pre-filter includes a bottom cover 1, with an inlet pipe 2 fixedly connected to the left side of the bottom cover 1 and an outlet pipe 3 fixedly connected to the right side of the bottom cover 1. Multiple crossbars 4 are arranged in a ring array on the inner wall of the bottom cover 1, and the ends of the multiple crossbars 4 are fixedly connected to a connecting seat 5. The end of the inlet pipe 2 communicates with the interior of the connecting seat 5, and a groove 6 is provided on the upper end of the connecting seat 5. A housing 7 is located on the upper end of the bottom cover 1, and a cylindrical column 10 is provided inside the housing 7. Multiple through slots 12 are arranged in a ring array on the side wall of the cylindrical column 10, and the interior of the side wall of the cylindrical column 10 is respectively provided with… The cylinder 10 is equipped with filter screen 13 and filter screen 14. The lower end of the cylinder 10 is slidably connected to the groove 6. The connecting seat 5 is fixedly supported by multiple crossbars 4. The cylinder 10 is limited by the groove 6. Water flows into the connecting seat 5 through the inlet pipe 2 and flows upward into the cylinder 10. The water is filtered and purified by the filter screen 13 and filter screen 14. The purified water is then discharged into the housing 7 through the through groove 12 and flows into the bottom cover 1. The purified water is discharged through the outlet pipe 3.
[0023] The upper seat 8 is fixedly connected to the top of the housing 7. The inner wall of the upper seat 8 is provided with a groove 9, which is annular. The upper end of the cylinder 10 is slidably connected to the inside of the upper seat 8, and the cylinder 10 is through-hole.
[0024] The side wall of the cylinder 10 is provided with an elastic element 16, which is ring-shaped and cooperates with the slot 9. The tight cooperation between the elastic element 16 and the slot 9 ensures a stable connection between the cylinder 10 and the upper seat 8, preventing the cylinder 10 from shaking or falling off during use and improving the stability of the entire structure.
[0025] The inner side wall of the cylindrical column 10 is provided with a cavity 11, which is connected to the through groove 12. The cavity 11 is slidably connected to filter screen 13 and filter screen 2 14 respectively, and the cavity 11 is used to store filter screen 13 and filter screen 2 14.
[0026] A cover plate 15 is threadedly connected to the lower end of the cavity 11. The lower end of the cover plate 15 has two slots. The lower end of the cover plate 15 fits into the bottom of the groove 6. The cover plate 15 seals the cavity 11 to prevent water from leaking from the bottom of the cavity 11 during the filtration process. When it is necessary to replace the filter screen 13 and the filter screen 14, the cover plate 15 is turned out from the inside of the cavity 11, and then the filter screen 13 and the filter screen 14 are pulled out from the inside of the cavity 11.
[0027] Flanges 17 are fixedly connected to both the side wall of the bottom cover 1 and the side wall of the shell 7. The two flanges 17 are fixedly connected by multiple bolts. A sealing ring is provided between the two flanges 17. The bottom cover 1 and the shell 7 are assembled by using the flanges 17.
[0028] In this utility model, water flows through the inlet pipe 2 into the connecting seat 5, and at the same time, the water flows upward into the cylinder 10. The water is filtered and purified by the filter screen 13 and the filter screen 14. The purified water is then discharged into the housing 7 through the through groove 12. At the same time, the purified water flows into the bottom cover 1 and is discharged through the outlet pipe 3.
[0029] When it is necessary to replace filter screen 13 and filter screen 14, remove the bolts between the two flanges 17, then remove the housing 7 from the top of the bottom cover 1, and then pull the cylinder 10 forcefully to deform the elastic element 16 and slide it out from the inside of the slot 9, thereby removing the cylinder 10 from the inside of the housing 7. Then unscrew the cover plate 15 from the inside of the cavity 11, and then pull out filter screen 13 and filter screen 14 from the inside of the cavity 11 to replace filter screen 13 and filter screen 14.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A dual-screen pre-filter, characterized in that, include The bottom cover (1) has a water inlet pipe (2) fixedly connected through the left side and a water outlet pipe (3) fixedly connected through the right side. Multiple crossbars (4) are arranged in a ring array on the inner wall of the bottom cover (1). The ends of the multiple crossbars (4) are fixedly connected to a connecting seat (5). The end of the water inlet pipe (2) is connected to the inside of the connecting seat (5). The upper end of the connecting seat (5) is provided with a groove (6). The housing (7) is located on the upper end of the bottom cover (1). A cylindrical column (10) is provided inside the housing (7). Multiple through slots (12) are arranged in a ring array on the side wall of the cylindrical column (10). A filter screen one (13) and a filter screen two (14) are respectively provided inside the side wall of the cylindrical column (10). The lower end of the cylindrical column (10) is slidably connected to the groove (6).
2. The dual-screen pre-filter according to claim 1, characterized in that, The upper seat (8) is fixedly connected to the top of the housing (7). The inner wall of the upper seat (8) is provided with a slot (9). The slot (9) is annular. The upper end of the cylinder (10) is slidably connected to the inside of the upper seat (8).
3. A dual-screen pre-filter according to claim 1, characterized in that, The side wall of the cylinder (10) is provided with an elastic element (16), which is annular and cooperates with the slot (9).
4. A dual-screen pre-filter according to claim 1, characterized in that, The cylinder (10) has a cavity (11) inside its side wall. The cavity (11) is connected to the through groove (12). The cavity (11) is slidably connected to filter screen one (13) and filter screen two (14) respectively.
5. A dual-screen pre-filter according to claim 4, characterized in that, The lower end of the cavity (11) is threadedly connected to a cover plate (15), and the lower end of the cover plate (15) is provided with two slots, and the lower end of the cover plate (15) fits against the bottom of the groove (6).
6. A dual-screen pre-filter according to claim 1, characterized in that, The side wall of the bottom cover (1) and the side wall of the shell (7) are both fixedly connected with flanges (17), and the two flanges (17) are fixedly connected by multiple bolts.