双构型复合滤网的进水过滤器
By combining a dual-configuration composite filter design with a one-way valve, the problems of easy accumulation of impurities and easy damage to the filter screen in existing washing machine inlet filters are solved, achieving high-efficiency filtration and structural stability, and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG WISE ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing washing machine inlet filters only have one filter screen, which makes it easy for impurities to accumulate, resulting in limited filtration efficiency. Furthermore, the filter screen has a short lifespan and needs to be replaced frequently, causing inconvenience to users.
It adopts a dual-structure composite filter design, including a columnar first filter and a flat second filter with different mesh densities. The two filters support and limit each other's installation, achieving complementary filtration of large particles and fine suspended matter. Combined with a one-way valve, it prevents water backflow.
It significantly improves the impurity capture rate, extends the service life of the filter, avoids filter screen deformation and displacement, ensures filtration efficiency and structural reliability, and prevents impurity backflow caused by siphon effect.
Smart Images
Figure CN224506422U_ABST
Abstract
Claims
1. A water inlet filter of a dual configuration composite filter screen, comprising a filter body (1), a first filter screen (2) arranged inside the filter body (1), characterized in that, The filter body (1) is also provided with a second filter screen (3). The mesh density of the first filter screen (2) and the second filter screen (3) is different. The first filter screen (2) and the second filter screen (3) can support and limit each other.
2. The dual configuration composite screen water inlet filter of claim 1, wherein, One end of the filter body (1) is detachably connected to a filter end cap (4), and the other end of the filter body (1) extends outward to provide a pipe connection channel (11), on which an external water pipe can be installed.
3. The dual configuration composite screen water inlet filter of claim 2, wherein, The filter body (1) has a first threaded boss (12) and an annular limiting boss (13) at one end. The filter end cap (4) has a first threaded inner groove (41) adapted to the first threaded boss (12) at one end. The filter end cap (4) has a second threaded inner groove (42) at the other end. The external water pipe can be installed inside the second threaded inner groove (42).
4. The dual configuration composite screen water inlet filter of claim 3, wherein, The filter end cap (4) is also provided with an annular groove (43) inside. The top of the first filter screen (2) is detachably installed inside the annular groove (43). A sealing gasket (44) is also provided between the inside of the filter end cap (4) and the top of the filter body (1).
5. The dual configuration composite screen inlet filter of claim 4, wherein, The first filter screen (2) is cylindrical in shape, and an annular protrusion (21) extends downward from the bottom of the first filter screen (2). The annular protrusion (21) can be detachably attached to the surface of the second filter screen (3).
6. The dual configuration composite screen water inlet filter of claim 5, wherein, The second filter screen (3) is flat and circular. The middle part of the second filter screen (3) is provided with a circular through hole (31) adapted to the annular boss (21). The bottom of the second filter screen (3) extends downward and is provided with a columnar boss (32) for support.
7. The dual configuration composite screen water inlet filter of claim 6, wherein, The filter body (1) is filled with calcium sulfite strips for removing heavy metal ions from the water, and the pipe connection channel (11) is also equipped with a one-way valve (5) to prevent water backflow.
8. The dual configuration composite screen inlet filter of claim 2, wherein, The filter end cap (4) is also provided with several end cap protrusions (45) on its side wall. These end cap protrusions (45) can increase friction when the filter end cap (4) is disassembled.