Check valve filter pad
The check valve filter pad with a detachable diverter block and deformable rubber components addresses the issue of filter screen loosening and blockages by ensuring secure attachment and easy cleaning, enhancing maintenance efficiency and reducing costs.
Patent Information
- Application Number
- CN202420829493.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-04-19
AI Technical Summary
Existing check valves in plumbing systems are prone to filter screen loosening or falling off due to water flow impact and require replacement rather than cleaning, leading to blockages and increased maintenance costs.
A check valve filter pad with a detachable diverter block and deformable rubber components, including a deformable valve cover and filter screen, allows for secure attachment and easy disassembly for cleaning, ensuring the filter screen remains firmly in place and can be thoroughly cleaned without leaving sanitary dead corners.
The solution provides a secure and easy-to-clean filter pad that prevents filter screen detachment and blockages, maintaining efficient water flow while reducing maintenance costs and ensuring thorough sanitation.
Smart Images
Figure CN222277573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bathrooms, in particular to a check valve filter pad. Background Art
[0002] A check valve is a commonly used water flow control component that ensures that fluid can only flow in one direction. It is widely used in plumbing systems in a variety of different scenarios such as homes or businesses.
[0003] In the scenario of home use, the check valve is generally installed at the water inlet of the washing machine, basin faucet, kitchen faucet or shower head to prevent the mixing of hot and cold water or the backflow of water. The existing check valve includes a valve body, a valve disc arranged in the valve body and capable of opening or closing under water pressure, a spring for keeping the valve disc closed when there is no water pressure, and a gasket for sealing. The check valve composed of this structure has only the function of intercepting water flow and cannot filter impurities and sediment in tap water.
[0004] A Chinese utility model patent with publication number CN216692300U discloses a check valve with a filtering function, which includes a shell, a gland and a special-shaped rubber pad; the special-shaped rubber pad and the gland are arranged inside the shell and coaxially with the shell; the shell has a water inlet end and a water outlet end; a filtering device is fixed to the water inlet end, the filtering device is coaxially arranged with the shell, the filtering device is a filter screen and a connecting ring, the filter screen and the connecting ring are integrally formed, one end of the connecting ring is the periphery of the filter screen, and the other end is fixedly connected to the shell; a sealing gasket is fixed to the water outlet end, and the sealing gasket is coaxially arranged with the shell. The check valve disclosed in the patent is provided with a filter screen at the water inlet end of the shell. When the check valve is installed in a pipeline, the filter screen provided at the water inlet end of the shell can achieve the purpose of filtering impurities and sediment in tap water.
[0005] However, as the above-mentioned solution is used for a longer time, the water inlet end of the filter screen of the check valve is arranged inside the pipe. Under the influence of the water flow impact, the filter screen will inevitably become loose or fall off, causing the filter screen to fail and affecting daily use; and after long-term use, a large amount of dirt will accumulate on the filter screen of the check valve of this solution, which will cause the water outlet end to be blocked. Since the filter screen is fixedly connected to the shell, it can only be replaced but cannot be disassembled for cleaning, which increases the cost of use.
[0006] In view of this, the inventor conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Utility Model Content
[0007] The utility model provides a check valve filter pad, aiming to solve the problems that the filter screen of the existing check valve is easy to loosen or fall off under the impact of water flow and the filter screen can only be replaced but cannot be disassembled for cleaning after a large amount of dirt is accumulated.
[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0009] A check valve filter pad comprises a cylindrical valve body, the valve body having a water inlet and a water outlet, a detachable diverter block being embedded in the water outlet of the valve body, a convex edge being convexly provided on the outer peripheral wall of the water outlet, a detachable valve cover being clamped on the convex edge, the valve cover being made of deformable rubber material, and a filter screen being provided between the valve cover and the convex edge; a valve stem is provided inside the valve body, a valve disc is provided at one end of the valve stem, a groove is concavely provided on the outer peripheral wall of the valve disc, an O-ring for sealing against the water inlet is installed in the groove, and the other end is movably inserted into the diverter block, and the valve stem sleeve is provided with a spring, one end of the spring is in contact with the diverter block, and the other end is in contact with the valve disc.
[0010] Furthermore, a recessed groove is formed on one side of the valve cover facing the valve body, and a recessed groove for latching the convex edge is formed on the inner peripheral wall of the recessed groove.
[0011] Furthermore, a limiting protrusion is convexly provided on the inner peripheral wall of the valve body close to the water outlet, and a limiting groove for clamping the limiting protrusion is concavely provided on the outer peripheral wall of the diverter block.
[0012] Furthermore, the diverter block is circular and includes a hollow cylinder concentrically arranged inside the diverter block and a plurality of ribs connected between the outer wall of the hollow cylinder and the inner wall of the diverter block. The hollow cylinder is provided with a guide hole for the valve stem to pass through, and there are gaps between the plurality of ribs for water to flow through.
[0013] Furthermore, the diverter block is made of deformable rubber material.
[0014] Furthermore, a positioning groove is concavely formed on the top surface of the valve flap, a positioning column is extended from one side of the hollow cylinder facing the valve flap, one end of the spring is sleeved on the positioning column, and the other end abuts against the positioning groove.
[0015] From the above description of the structure of the utility model, it can be seen that the utility model has the following advantages:
[0016] Firstly, the utility model has a convex edge protruding from the outer peripheral wall of the water outlet of the valve body, and a detachable valve cover is clamped on the convex edge. The valve cover is made of deformable rubber material, and a filter is arranged between the valve cover and the convex edge. Since the valve cover and the convex edge are clamped, the filter can be more firmly fixed on the valve body and will not fall off due to being impacted by water flow for a long time. Moreover, since the valve cover is made of deformable rubber material, it is more convenient to install and disassemble the valve body for cleaning.
[0017] Secondly, the diverter block of the utility model is made of a deformable rubber material and can be detachably installed in the water outlet of the valve body, so that the valve body can be cleaned more thoroughly without leaving any sanitary dead corners.
[0018] Thirdly, the valve flap of the utility model is provided with an O-ring for sealing against the water inlet of the valve body, thereby improving the sealing of the water inlet of the valve body and preventing the return water from seeping into the main water pipe from the water inlet of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional assembly diagram of the utility model.
[0020] Figure 2 It is a schematic structural diagram of a three-dimensional cross section of the utility model.
[0021] Figure 3 It is a top view of the utility model.
[0022] Figure 4 for Figure 3 Cross-sectional view along the AA direction.
[0023] Figure 5 It is a structural schematic diagram of the shunt block of the utility model.
[0024] Figure numerals: 10-valve body; 101-water inlet; 102-water outlet; 1021-convex edge; 11-limiting protrusion; 20-diverter block; 21-limiting groove; 22-hollow cylinder; 221-guide hole; 222-positioning column; 23-rib plate; 30-valve cover; 31-allowance groove; 311-card slot; 40-filter screen; 51-valve stem; 52-valve disc; 521-groove; 522-positioning groove; 53-O-ring; 54-spring. DETAILED DESCRIPTION
[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.
[0026] Reference Figures 1 to 4A check valve filter pad includes a cylindrical valve body 10, the interior of the valve body 10 is hollow to form a channel for water to flow through, and the valve body 10 has a water inlet 101 and a water outlet 102, wherein the water outlet 102 of the valve body 10 is embedded with a detachable diverter block 20, and the outer peripheral wall of the water outlet 102 is convexly provided with a circle of flange 1021, and the flange 1021 is clamped with a detachable valve cover 30, the valve cover 30 is circular, and the middle part is hollow to form a through hole for water to flow through, the material of the valve cover 30 is preferably a deformable rubber material, and a filter screen 40 is provided between the valve cover 30 and the flange 1021, and the mesh number of the filter screen 40 is preferably between 80 meshes and 100 meshes; the valve body 10 is provided with a filter screen 40, and the mesh number of the filter screen 40 is preferably between 80 meshes and 100 meshes; A valve stem 51, one end of which is provided with a valve flap 52, the outer peripheral wall of the valve flap 52 is recessed with a groove 521, an O-ring 53 for sealing against the water inlet 101 is installed in the groove 521, the other end is movably inserted into the diverter block 20, and the valve stem 51 is sleeved with a spring 54 for applying force to the valve flap 52 so that the O-ring 53 can abut against the water inlet 101 of the valve body 10, one end of the spring 54 abuts against the diverter block 20, and the other end abuts against the valve flap 52. Under the action of the spring 54, when the valve flap 52 is not impacted by the water flow, the O-ring 53 installed thereon seals against the water inlet 101 of the valve body 10 to prevent backflow.
[0027] Reference Figures 1 to 4 A recessed groove 31 is formed on one side of the valve cover 30 facing the valve body 10, and a recessed groove 311 for snapping into the convex edge 1021 is formed on the inner wall of the recessed groove 31. In this way, when the valve cover 30 needs to be disassembled, the valve cover 30 can be easily disassembled because it is made of deformable rubber material, and then the filter screen 40 and the inside of the valve body 10 can be cleaned, which makes installation more convenient.
[0028] Reference Figures 1 to 5 The inner wall of the valve body 10 near the water outlet 102 is convexly provided with a limiting protrusion 11, and the outer wall of the diverter block 20 is concavely provided with a limiting groove 21 for snapping into the above-mentioned limiting protrusion 11, so that the diverter block 20 is more convenient to disassemble and install during cleaning; in the present embodiment, the diverter block 20 is circular, and the diverter block 20 includes a hollow cylinder 22 concentrically arranged inside it and a plurality of ribs 23 connected between the outer wall of the hollow cylinder 22 and the inner wall of the diverter block 20, and the hollow cylinder 22 is provided with a guide hole 221 for the valve stem 51 to pass through, and the guide hole 221 can play a role in positioning and limiting the valve stem 51, and there is a gap between the plurality of the above-mentioned ribs 23 for water to pass through. In order to facilitate cleaning, the material of the diverter block 20 is preferably a deformable rubber material.
[0029] Reference Figures 1 to 5A positioning groove 522 is recessed on the top surface of the valve disc 52, and a positioning column 222 is extended from the side of the hollow cylinder 22 facing the valve disc 52. One end of the spring 54 is sleeved on the positioning column 222, and the other end abuts against the positioning groove 522. Through such an arrangement, the position of the spring 54 will not deviate when it is compressed or rebounded, thereby ensuring the positioning accuracy of the spring 54.
[0030] The outer peripheral wall of the water outlet 102 of the valve body 10 of the utility model is convexly provided with a convex edge 1021, and a detachable valve cover 30 is clamped on the convex edge 1021. The valve cover 30 is made of a deformable rubber material, and a filter screen 40 for filtering mud and sand of impurities in the water is provided between the valve cover 30 and the convex edge 1021. A detachable diverter block 20 is embedded inside the water outlet 102 of the valve body 10. The diverter block 20 is also made of a deformable rubber material, and a valve stem 51 is further provided inside the valve body 10. One end of the valve stem 51 is movably inserted into the diverter block 20, and the other end is provided with a valve flap 52 that can be sealed against the water outlet 101 of the valve body 10. Such an arrangement enables the filter screen 40 to be located at the water outlet 102 of the valve body 10 and no longer placed in the pipeline, so that the water flow impact force on the filter screen 40 is smaller, and because the filter screen 40 is arranged between the valve cover 30 and the convex edge 1021 of the valve body 10, and the valve cover 30 and the convex edge 1021 are snap-fitted, the filter screen 40 can be more firmly installed on the valve body 10 and will not fall off due to long-term impact by the water flow; and the valve cover 30 and the diverter block 20 of the utility model are both made of deformable rubber material, which is not only convenient for disassembly and maintenance, but also more thorough when cleaning the valve body 10, without leaving any sanitary dead corners.
[0031] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.
Claims
1. A check valve filter pad, characterized in that: It comprises a cylindrical valve body, which has a water inlet and a water outlet, a detachable diverter block is embedded in the water outlet of the valve body, a convex edge is convexly provided on the outer peripheral wall of the water outlet, a detachable valve cover is clamped on the convex edge, the valve cover is made of deformable rubber material, and a filter is provided between the valve cover and the convex edge; a valve stem is provided inside the valve body, a valve flap is provided at one end of the valve stem, a groove is concavely provided on the outer peripheral wall of the valve flap, an O-ring for sealing against the water inlet is installed in the groove, and the other end is movably inserted into the diverter block, and the valve stem sleeve is provided with a spring, one end of the spring abuts against the diverter block, and the other end abuts against the valve flap.
2. The check valve filter pad according to claim 1, characterized in that: A side of the valve cover facing the valve body is concavely provided with a clearance groove, and an inner peripheral wall of the clearance groove is concavely provided with a clamping groove for clamping the convex edge.
3. The check valve filter pad according to claim 1, characterized in that: A limiting protrusion is convexly provided on the inner peripheral wall of the valve body close to the water outlet, and a limiting groove for clamping the limiting protrusion is concavely provided on the outer peripheral wall of the diverter block.
4. The check valve filter pad according to claim 3, characterized in that: The diverter block is circular and includes a hollow cylinder concentrically arranged inside the diverter block and a plurality of ribs connected between the outer wall of the hollow cylinder and the inner wall of the diverter block. The hollow cylinder is provided with a guide hole for the valve stem to pass through, and there are gaps between the plurality of ribs for water to pass through.
5. The check valve filter pad according to claim 1 or 4, characterized in that: The diverter block is made of deformable rubber material.
6. The check valve filter pad according to claim 4, characterized in that: A positioning groove is concavely formed on the top surface of the valve flap, a positioning column is extended from one side of the hollow cylinder facing the valve flap, one end of the spring is sleeved on the positioning column, and the other end abuts against the positioning groove.