Small volume convenient corrosion-resistant check valve

Abstract

The utility model discloses a small volume convenient corrosion -resistant check valve relates to check valve structure technical field, the utility model discloses a check valve valve body, the first installation flange is installed to the input port department of check valve valve body, the output port is installed to the second installation flange department of check valve valve body, the support valve seat is fixedly installed in check valve valve body, the valve clapper is slidably installed in check valve valve body, the back of valve clapper is fixedly installed with sliding axle, sliding axle with support valve seat sliding connection, spring piece is fixedly installed in sliding axle, the other end of spring piece with support valve seat fixed connection, the front end rotation of valve clapper is installed with spoiler blade, can make the uniform force of valve clapper, will not produce vibration because of receiving uneven impact force, also will not check valve valve body take place collision wear and tear to improve the service life of check valve valve body.

Description

Technical Field

[0001] This utility model belongs to the technical field of check valve structure, specifically, it relates to a small-volume, convenient, corrosion-resistant check valve. Background Technology

[0002] A check valve is an automatic valve mainly used to prevent fluid backflow. The working principle of a check valve is relatively simple: when the fluid flows in the specified direction, the check valve can open smoothly to allow the fluid to pass through; when the fluid attempts to flow in the opposite direction, the check valve will automatically close to prevent the fluid from flowing back.

[0003] Check valves are typically installed in pipelines where unidirectional fluid flow is required. In pipelines carrying corrosive fluids, check valves are often necessary. However, existing check valves used in such pipelines are susceptible to corrosion from the medium, affecting their service life. The valve disc vibrates under the action of elasticity and fluid impact, which can cause wear on the contact surfaces over time, reducing the valve's lifespan and affecting its sealing performance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a small-volume, convenient, corrosion-resistant check valve that can overcome or at least partially solve the above problems.

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by this utility model is: a small-volume, convenient, and corrosion-resistant check valve, including a check valve body, a first mounting flange installed at the input port of the check valve body, and an output port installed at the second mounting flange of the check valve body;

[0006] A support valve seat is fixedly installed inside the valve body of the check valve. A valve disc is slidably installed inside the valve body of the check valve. A sliding shaft is fixedly installed on the back of the valve disc. The sliding shaft is slidably connected to the support valve seat. A spring is fixedly installed inside the sliding shaft. The other end of the spring is fixedly connected to the support valve seat.

[0007] The valve disc is rotatably mounted with a baffle blade.

[0008] To improve the sealing effect, preferably, a sealing ring that matches the top surface of the valve disc is installed in the valve body of the check valve.

[0009] To ensure a tight fit between the sealing ring and the valve disc, a sliding ring is slidably mounted inside the check valve body. The sliding ring is fixedly connected to the sealing ring, and multiple elastic balls are fixedly mounted on the back of the sliding ring.

[0010] To prevent the valve disc from sliding off course, preferably, a limiting slider is fixedly installed on the sliding shaft, and a limiting groove matching the limiting slider is provided in the supporting valve seat.

[0011] To ensure the stability of the spring component, a spring damper is further installed inside the spring component.

[0012] To improve the corrosion resistance of the check valve, preferably, the valve body, valve seat support, and valve disc are all made of PTFE material.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention is a small-volume, convenient, and corrosion-resistant check valve. The input fluid drives the turbulence blades to rotate, and the rotating turbulence blades further turbulent the input fluid, preventing the fluid from impacting the valve disc unevenly. After the fluid passes through the turbulence blades, it is converted into a uniform spiral fluid. The valve disc is subjected to uniform force and will not vibrate due to uneven impact force, thus preventing the check valve body from colliding and wearing, thereby improving the service life of the check valve body.

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the external structure of the check valve body of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the check valve body of this utility model;

[0018] Figure 3 This is a schematic diagram of the supporting valve seat and valve disc structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the sealing ring structure of this utility model.

[0020] In the diagram: 1. Check valve body; 101. First mounting flange; 102. Second mounting flange; 103. Input port; 104. Output port; 2. Support seat; 201. Limiting groove; 3. Valve disc; 301. Sliding shaft; 302. Limiting slider; 4. Turbulence vane; 5. Sealing ring; 501. Sliding ring; 502. Elastic ball; 6. Spring; 601. Spring damping. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] Example:

[0023] Reference Figure 1-4 As shown, a small-volume, convenient, and corrosion-resistant check valve includes a check valve body 1, a first mounting flange 101 installed at the input port 103 of the check valve body 1, and an output port 104 installed at the second mounting flange 102 of the check valve body 1.

[0024] A support valve seat 2 is fixedly installed inside the valve body 1 of the check valve. A valve disc 3 is slidably installed inside the valve body 1 of the check valve. A sliding shaft 301 is fixedly installed on the back of the valve disc 3. The sliding shaft 301 is slidably connected to the support valve seat 2. A spring 6 is fixedly installed inside the sliding shaft 301. The other end of the spring 6 is fixedly connected to the support valve seat 2.

[0025] A turbulence vane 4 is rotatably mounted on the front end of valve disc 3.

[0026] A sealing ring 5 that matches the top surface of the valve disc 3 is installed inside the valve body 1 of the check valve. A sliding ring 501 is slidably installed inside the valve body 1 of the check valve. The sliding ring 501 is fixedly connected to the sealing ring 5. Multiple elastic balls 502 are fixedly installed on the back of the sliding ring 501. When the valve disc 3 is pushed forward by the spring force of the spring member 6, the sealing ring 5 is deformed by the elastic force of the elastic balls 502, so that the valve disc 3 and the sealing ring 5 are tightly pressed together, so that there is no gap between the valve disc 3 and the valve body 1 of the check valve, and the fluid will not flow back to the input port 103.

[0027] A limiting slider 302 is fixedly installed on the sliding shaft 301. The supporting valve seat 2 is provided with a limiting groove 201 that matches the limiting slider 302. A spring damper 601 is installed in the spring member 6. The sliding of the sliding shaft 301 is limited by the limiting slider 302 and the limiting groove 201, so as to ensure that the movement of the valve disc 3 in the check valve body 1 is stable and will not deviate, thus avoiding gaps between the valve disc 3 and the check valve body 1 due to deviation.

[0028] To improve the corrosion resistance of the check valve, preferably, the valve body 1, the supporting valve seat 2, and the valve disc 3 are all made of PTFE material. The overall height of the valve body 1 is 60mm. The internal structure of the valve body 1 and the flow channel structure of the supporting valve seat 2 and the valve disc 3 are analyzed by CFD simulation to reduce turbulence and pressure loss. The surface is polished to improve the smoothness and prevent fluid residue.

[0029] This utility model uses a first mounting flange 101 to fix and connect the input port 103 to the input pipe, and a second mounting flange 102 to fix and connect the output port 104 to the output pipe. When fluid enters the input port 103, it will drive the turbulence vane 4 to rotate. The fluid that originally rushed directly towards the impact valve disc 3 is slowed down and transformed into a spiral fluid under the rotation of the turbulence vane 4, and then abuts against the top surface of the valve disc 3. When the pressure of the fluid is greater than the elastic force of the spring 6, the valve disc 3 slides backward, and the fluid enters the check valve body 1, passes through the support valve seat 2, and flows from the support valve seat 2 to the output pipe.

[0030] When the fluid in the output pipe flows backward, the pressure received on the back of the valve disc 3 and the elastic force of the spring 6 are greater than the pressure on the top surface of the valve disc 3. The valve disc 3 slides forward and the valve disc 3 tightly abuts against the sealing ring 5 to seal and prevent the fluid from flowing backward to the input port 103 and the input pipe.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any equivalent substitutions or modifications made by those skilled in the art without departing from the scope of the present utility model's technical solution and its inventive concept should be covered within the protection scope of the present utility model.

Claims

1. A compact, convenient, and corrosion-resistant check valve, characterized in that: Includes a check valve body (1), with a first mounting flange (101) installed at the input port (103) of the check valve body (1) and an output port (104) installed at the second mounting flange (102) of the check valve body (1); A support valve seat (2) is fixedly installed inside the valve body (1) of the check valve. A valve disc (3) is slidably installed inside the valve body (1). A sliding shaft (301) is fixedly installed on the back of the valve disc (3). The sliding shaft (301) is slidably connected to the support valve seat (2). A spring (6) is fixedly installed inside the sliding shaft (301). The other end of the spring (6) is fixedly connected to the support valve seat (2). The valve disc (3) is rotatably mounted with a baffle blade (4) at its front end.

2. The small-volume, convenient, corrosion-resistant check valve according to claim 1, characterized in that, The check valve body (1) is equipped with a sealing ring (5) that matches the top surface of the valve disc (3).

3. The small-volume, convenient, corrosion-resistant check valve according to claim 2, characterized in that, A sliding ring (501) is slidably installed inside the valve body (1) of the check valve. The sliding ring (501) is fixedly connected to the sealing ring (5). A plurality of elastic balls (502) are fixedly installed on the back side of the sliding ring (501).

4. The small-volume, convenient, corrosion-resistant check valve according to claim 1, characterized in that, A limiting slider (302) is fixedly installed on the sliding shaft (301), and a limiting groove (201) matching the limiting slider (302) is provided in the support valve seat (2).

5. The small-volume, convenient, corrosion-resistant check valve according to claim 4, characterized in that, A spring damper (601) is installed inside the spring component (6).

6. The small-volume, convenient, corrosion-resistant check valve according to claim 1, characterized in that, The valve body (1), valve seat (2), and valve disc (3) of the check valve are all made of PTFE material.

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