Integrated filtering check valve

Abstract

The utility model discloses an integrated filtering check valve which comprises a valve body, a valve element and a gland. A filter screen with a plurality of meshes is formed at the lower end of the valve body, and the filter screen and the valve body are integrally formed; the gland is fixedly connected with the upper end of the valve body; the upper end of the valve element is inserted into the gland in a sliding mode, a sealing cover is formed at the lower end of the valve element, and the sealing cover is arranged on the lower portion of the valve body in an openable and closable sealing and covering mode. Compared with the prior art, the integrated filtering check valve has the advantages that the filter screen and the valve body are integrally formed, so that the production cost is greatly reduced, and the economical efficiency of products is improved.

Description

Technical Field

[0001] The utility model relates to the field of check valves, in particular to an integrated filtering check valve. Background Art

[0002] A check valve is a one-way valve. In the bathroom industry, it is usually installed in the pipeline to block the backflow of the medium, which can effectively prevent the water hammer effect from damaging important waterways. With the improvement of people's living standards, the water quality requirements for domestic water are getting higher and higher. Therefore, filters are installed in various places of household water pipes and bathroom equipment today, which can not only improve the water quality, but also prevent impurities in the water from damaging bathroom equipment. The existing waterways need to be installed with check valves and filters separately, which greatly wastes manpower and material resources.

[0003] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content

[0004] The main purpose of the utility model is to provide an integrated filter check valve, which has the advantages of an integrated filter valve body, convenient installation and low cost.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] An integrated filter check valve comprises a valve body, a valve core and a pressure cover; a filter screen with a plurality of mesh holes is formed at the lower end of the valve body, and the filter screen is integrally formed with the valve body; the pressure cover is fixedly connected to the upper end of the valve body; the upper end of the valve core can be slidably inserted in the pressure cover, and a sealing cover is formed at the lower end of the valve core, and the sealing cover can be opened and closed and is arranged at the lower part of the valve body.

[0007] Furthermore, a first step is formed on the upper portion of the valve body, and a second step is formed on the gland, and the first step and the second step are abutted and clamped.

[0008] Furthermore, a sealing ring is formed at the lower end of the valve body, and the sealing cover can be opened and closed and is arranged on the sealing ring.

[0009] Furthermore, a sealing slope is formed on the inner wall of the lower part of the valve body, so the spacing of the cross-section of the sealing slope gradually decreases from top to bottom; a sealing groove is formed on the sealing cover, a sealing ring is installed in the sealing groove, and the sealing slope and the sealing cover can be opened and closed and sealed by the sealing ring.

[0010] Furthermore, a first pre-tightening groove is formed on the pressure cover, a second pre-tightening groove is formed on the sealing cover, and a pre-tightening spring is installed between the first pre-tightening groove and the second pre-tightening groove; the pre-tightening spring is sleeved on the valve core.

[0011] Furthermore, a convex ring is formed on the upper end of the valve body, and a rubber ring is installed on the convex ring.

[0012] After adopting the above structure, the integrated filter check valve of the utility model has at least the following beneficial effects:

[0013] 1. The filter screen and the valve body are integrally formed, which can not only meet the user's demand for water quality, but also prevent the damage of sediment and water hammer effect to the waterway structure. It is easy for users to install and the production cost is low, which greatly improves the economic efficiency of the product.

[0014] Second, during assembly, the valve core only needs to be docked and inserted into the gland, and then the gland is pressed into the valve body so that the first step and the second step are snapped together to complete the installation, so the operation is more convenient and quick.

[0015] 3. When the water flows from the valve body from bottom to top, the sealing cover is pushed open by the water flow, and the water flow can flow normally at this time; when the water flows from the valve body from top to bottom, the sealing cover will be tightly pressed against and sealed on the valve body under the action of the preload spring, and the water flow is blocked by the sealing cover and cannot flow, thereby preventing the water flow from flowing back.

[0016] Compared with the prior art, the utility model uses an integrated filter check valve to form a filter screen and a valve body in one piece, which greatly reduces production costs and improves the economy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model relates to a cross-sectional view of an integrated filter check valve.

[0018] Figure 2 The utility model is a stereoscopic diagram of an integrated filter check valve.

[0019] In the figure:

[0020] Valve body 1, valve core 2, gland 3, preload spring 4,

[0021] Filter 11, mesh 12, first step 13,

[0022] Sealing ring 14, sealing bevel 15, convex ring 16, rubber ring 17,

[0023] Sealing cover 21, sealing groove 22, second pre-tightening groove 23,

[0024] The second step 31 and the first pre-tightening groove 32 . DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0026] like Figure 1 and Figure 2 As shown, it is an integrated filter check valve involved in the utility model, including a valve body 1, a valve core 2 and a gland 3; a filter screen 11 with a plurality of meshes 12 is formed at the lower end of the valve body 1, and the filter screen 11 is integrally formed with the valve body 1; the gland 3 is fixedly connected to the upper end of the valve body 1; the upper end of the valve core 2 can be slidably inserted in the gland 3, and a sealing cover 21 is formed at the lower end of the valve core 2, and the sealing cover 21 can be opened and closed. The sealing cover 21 is arranged at the lower part of the valve body 1. The filter screen 11 is integrally formed with the valve body 1, which can not only meet the user's demand for water quality, but also prevent the damage of the waterway structure to the sediment and water hammer effect. It is convenient for users to install, and the production cost is low, which greatly improves the economic efficiency of the product. In addition, a first step 13 is formed on the upper part of the valve body 1, and a second step 31 is formed on the gland 3, and the first step 13 and the second step 31 are abutted and clamped. During assembly, the valve core 2 only needs to be docked and inserted into the gland 3, and then the gland 3 is pressed into the valve body 1 so that the first step 13 and the second step 31 are snapped together to complete the installation, so the operation is more convenient and quick.

[0027] Preferably, a sealing ring 14 is formed at the lower end of the valve body 1, and the sealing cover 21 can be opened and closed. The sealing cover 21 is arranged on the sealing ring 14. Preferably, a sealing slope 15 is formed on the inner wall of the lower part of the valve body 1, so that the cross-sectional spacing of the sealing slope 15 gradually decreases from top to bottom; the sealing cover 21 is formed with a sealing groove 22, and a sealing ring (not shown in the figure) is installed in the sealing groove 22, and the sealing slope 15 and the sealing cover 21 are connected in an openable and closable sealing manner through the sealing ring. In this way, when the water flows backward from top to bottom, the cooperation between the sealing cover 21 and the valve body 1 can better seal the water flow.

[0028] Preferably, if Figure 1 As shown, the pressure cover 3 is formed with a first pre-tightening groove 32, the sealing cover 21 is formed with a second pre-tightening groove 23, and a pre-tightening spring 4 is installed between the first pre-tightening groove 32 and the second pre-tightening groove 23; the pre-tightening spring 4 is sleeved on the valve core 2. When the water flows from the valve body 1 from bottom to top, the sealing cover 21 is pushed open by the water flow, and the water flow can flow normally at this time; when the water flows from the valve body 1 from top to bottom, the sealing cover 21 will be tightly pressed against and sealed on the valve body 1 under the action of the pre-tightening spring 4, and the water flow is blocked by the sealing cover 21 and cannot flow, so the backflow of water can be blocked.

[0029] Preferably, a convex ring 16 is formed at the upper end of the valve body 1, and a rubber ring 17 is installed on the convex ring 16. This makes it more convenient to seal and install the check valve in a pipeline or a bathroom product.

[0030] Compared with the prior art, the utility model uses an integrated filter check valve to form a filter screen 11 and a valve body 1 in one piece, which greatly reduces production costs and improves the economy of the product.

[0031] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An integrated filter check valve, characterized in that: It includes a valve body, a valve core and a pressure cover; a filter screen with a plurality of mesh holes is formed at the lower end of the valve body, and the filter screen is integrally formed with the valve body; the pressure cover is fixedly connected to the upper end of the valve body; the upper end of the valve core can be slidably inserted in the pressure cover, and a sealing cover is formed at the lower end of the valve core, and the sealing cover can be opened and closed and is arranged at the lower part of the valve body.

2. An integrated filter check valve according to claim 1, characterized in that: The valve body is formed with a first step on its upper portion, the gland is formed with a second step, and the first step and the second step are abutted and clamped.

3. The integrated filter check valve according to claim 1, characterized in that: A sealing ring is formed at the lower end of the valve body, and the sealing cover can be opened and closed and is arranged on the sealing ring.

4. The integrated filter check valve according to claim 1, characterized in that: The lower inner wall of the valve body is formed with a sealing slope, so the spacing of the cross-section of the sealing slope gradually decreases from top to bottom; the sealing cover is formed with a sealing groove, and a sealing ring is installed in the sealing groove. The sealing slope and the sealing cover can be opened and closed and sealed through the sealing ring.

5. The integrated filter check valve according to claim 1, characterized in that: A first pre-tightening groove is formed on the pressure cover, a second pre-tightening groove is formed on the sealing cover, a pre-tightening spring is installed between the first pre-tightening groove and the second pre-tightening groove; the pre-tightening spring is sleeved on the valve core.

6. The integrated filter check valve according to claim 1, characterized in that: A convex ring is formed at the upper end of the valve body, and a rubber ring is installed on the convex ring.

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