A washing machine drain valve assembly
By adopting a split valve sleeve design and utilizing threaded connection and ring groove fitting structure, the problems of easy wear and difficult replacement of rubber valve sleeves are solved, realizing quick disassembly and assembly and stable installation of valve plug, and improving the convenience of maintenance of washing machine drain valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU TSANNKUN SEALS CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-16
AI Technical Summary
The rubber valve sleeve of the existing washing machine drain valve is prone to fatigue wear during use, which leads to surface cracks and peeling. It is also difficult to replace, as the valve sleeve and valve core need to be disassembled for replacement, which is a cumbersome operation.
The valve sleeve adopts a split design, including the valve sleeve body and the valve plug. It is connected by a screw and a threaded hole, combined with the fitting structure of the annular groove and the ring, to achieve stable installation and quick disassembly of the valve plug. The valve sleeve body and the valve plug can be made of different materials to enhance wear resistance and elasticity.
It enables quick disassembly and assembly of valve plugs and convenient replacement of easily damaged parts, reducing maintenance difficulty and improving installation stability and service life.
Smart Images

Figure CN224363076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drain valve sleeve technology, specifically a drain valve assembly for a washing machine. Background Technology
[0002] The washing machine drain valve is the core component of the washing machine drainage system. It is responsible for controlling the discharge and sealing of sewage in the washing tub. The drain valve is equipped with a rubber valve sleeve. When closed, the rubber valve sleeve relies on the elasticity of the internal spring device to tightly adhere to the valve seat to form a seal and prevent water leakage. When draining, it is pulled open by the traction device to form a gap for drainage.
[0003] Existing patent application number: 201710569596.0 A washing machine and its drain valve, including a valve body, the valve body including a closed end, a water inlet end and a water outlet end, the drain valve further including a valve core, a first lifting column and a second lifting column disposed in the valve body, the first lifting column and the second lifting column passing through the closed end and cooperating with each other, the second lifting column being connected to the valve core, such that when either the first lifting column or the second lifting column is pulled, the valve core can be pulled, thereby opening the water outlet end.
[0004] The aforementioned patent describes the functional structure of the rubber valve sleeve in the drain valve of a washing machine. In actual application, when the drain valve is running, the rubber valve sleeve needs to cooperate with the valve seat to open and close, which makes it more prone to fatigue wear, resulting in cracks and peeling on the surface of the valve sleeve. Since the rubber valve sleeve is an integrated structure, it is difficult to quickly replace the vulnerable parts. It is necessary to disassemble the valve sleeve and the valve core to achieve replacement, which is cumbersome and does not reduce the difficulty of disassembly and replacement. Therefore, we propose a washing machine drain valve assembly to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a washing machine drain valve assembly to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a washing machine drain valve assembly, comprising a split valve sleeve, the split valve sleeve comprising a valve sleeve body, a docking groove, a valve plug, a screw, and a screw hole, the bottom surface of the valve sleeve body is provided with a docking groove around the bottom, the valve plug is movably nested outside the docking groove, the screw is provided at the center of the inner side of the valve plug, and a screw hole is provided in the middle of the bottom surface of the valve sleeve body, the screw is screwed tightly with the inner thread of the screw hole.
[0007] Preferably, the valve sleeve body and the valve plug can be made of different materials.
[0008] Preferably, the screw and the screw hole have at least 2.5 turns of thread.
[0009] Preferably, the bottom edge of the valve sleeve body is provided with an annular groove, and the inner edge of the valve plug is integrally provided with an annular portion, which is movably fitted into the inner side of the annular groove.
[0010] Preferably, the outer surface of the ring portion is provided with anti-slip texture, and the anti-slip texture is longitudinal stripes.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This utility model features a split valve sleeve. During assembly, the screw is first threaded into the screw hole until the valve plug is nested and fitted against the outside of the mating groove, thus completing the assembly of the valve plug and the valve sleeve body. At this time, the ring will be embedded in the inner side of the ring groove. The structural cooperation between the ring and the ring groove increases the rotational resistance of the valve plug, preventing the valve plug from rotating and falling off on its own, and ensuring the installation stability of the valve plug. During disassembly, the valve plug is rotated until the screw is disengaged from the inner side of the screw hole, thus completing the disassembly of the valve plug and the valve sleeve body. The disassembly and assembly are quick and easy, facilitating the removal and replacement of easily damaged valve plugs and reducing maintenance difficulty. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall front view of the present invention;
[0014] Figure 2 This utility model Figure 1 A schematic diagram of the disassembled structure;
[0015] Figure 3 This is a front view cross-sectional structural diagram of the valve sleeve body in this utility model;
[0016] Figure 4 This is a front view cross-sectional structural diagram of the valve plug in this utility model;
[0017] Figure 5 This is a top view of the valve plug in this utility model.
[0018] In the diagram: split valve sleeve-1, valve sleeve body-11, mating groove-12, valve plug-13, screw-14, screw hole-15, annular groove-16, annular part-17. Detailed Implementation
[0019] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.
[0020] Please see Figure 1-5This utility model provides a washing machine drain valve assembly, including a split valve sleeve 1. The split valve sleeve 1 includes a valve sleeve body 11, a docking groove 12, a valve plug 13, a screw 14, and a screw hole 15. The docking groove 12 is arranged around the bottom of the surface of the valve sleeve body 11. The valve plug 13 is movably nested outside the docking groove 12. The screw 14 is arranged at the center of the inner side of the valve plug 13. The screw hole 15 is opened in the middle of the bottom surface of the valve sleeve body 11. The screw 14 is screwed into the inner thread of the screw hole 15, thereby installing the valve sleeve body 11 and the valve plug 13 into one piece.
[0021] The valve sleeve body 11 and the valve plug 13 can be made of different materials. The valve sleeve body 11 can be made of rubber with better elasticity, and the valve plug 13 can be made of rubber with better wear resistance. They can be matched according to actual needs to enhance the performance.
[0022] To further clarify, the screw 14 and the screw hole 15 have at least 2.5 turns of thread to prevent accidental loosening and detachment.
[0023] To further explain, the bottom edge of the valve sleeve body 11 is provided with an annular groove 16, and the inner edge of the valve plug 13 is integrally provided with an annular portion 17. The annular portion 17 is movably fitted into the inner side of the annular groove 16, and the outer surface of the annular portion 17 is provided with anti-slip texture, which is a longitudinal stripe, to further increase the friction coefficient between the annular portion 17 and the annular groove 16, ensuring that the valve plug 13 is installed stably and does not easily rotate on its own.
[0024] Specifically, by setting a split valve sleeve 1, during assembly, first screw 14 is screwed into the inner side of the screw hole 15 until the valve plug 13 is nested and fitted to the outside of the mating groove 12, thus completing the assembly action of the valve plug 13 and the valve sleeve body 11. At this time, the ring 17 will be embedded in the inner side of the ring groove 16. The structural cooperation between the ring 17 and the ring groove 16 increases the rotational resistance of the valve plug 13, prevents the valve plug 13 from rotating and falling off by itself, and ensures the installation stability of the valve plug 13.
[0025] During disassembly, rotate the valve plug 13 until the screw 14 disengages from the inside of the screw hole 15 to complete the disassembly of the valve plug 13 from the valve sleeve body 11. The disassembly and assembly are quick and easy, making it convenient to disassemble and replace the easily damaged valve plug 13, thus reducing the difficulty of maintenance.
[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A washing machine drain valve assembly, characterized in that: The valve sleeve includes a split valve sleeve (1), which includes a valve sleeve body (11), a mating groove (12), a valve plug (13), a screw (14), and a screw hole (15). The valve sleeve body (11) has a mating groove (12) arranged around the bottom surface. The valve plug (13) is movably nested outside the mating groove (12). The screw (14) is arranged in the center of the inner side of the valve plug (13). The screw hole (15) is opened in the middle of the bottom surface of the valve sleeve body (11). The screw (14) is screwed into the screw hole (15) with the inner thread.
2. The washing machine drain valve assembly according to claim 1, characterized in that: The valve sleeve body (11) and the valve plug (13) can be made of different materials.
3. The washing machine drain valve assembly according to claim 1, characterized in that: The screw (14) and the screw hole (15) have at least 2.5 turns of thread.
4. The washing machine drain valve assembly according to claim 1, characterized in that: The valve sleeve body (11) has an annular groove (16) around its bottom edge, and the valve plug (13) has an integrally formed annular part (17) on its inner edge, which is movably fitted into the annular groove (16).
5. A washing machine drain valve assembly according to claim 4, characterized in that: The outer surface of the ring (17) is provided with anti-slip patterns, and the anti-slip patterns are longitudinal stripes.