One-way valve

Abstract

The utility model discloses a one-way valve and relates to the field of one-way valves, a one-way valve is slidably arranged in a valve body of the one-way valve, and the one-way valve is made of polytetrafluoroethylene. The one-way valve has the effects of improving the sealing performance and prolonging the service life.

Description

Technical Field

[0001] The present application relates to the field of one-way valves, and in particular to a one-way valve. Background Art

[0002] In the prior art, the one-way valve plug is made of metal or rubber. As the metal plug is used for a long time, carbon deposits will form on its surface, while the rubber material has good sealing performance but is not resistant to high temperature, which causes the sealing performance of the one-way valve to deteriorate.

[0003] The one-way valve in the prior art is improved by changing the plug material to polytetrafluoroethylene, so that carbon deposition will not occur on the surface and good sealing can be ensured. Utility Model Content

[0004] In order to improve the sealing performance and service life of a one-way valve, the present application provides a one-way valve.

[0005] This application provides a technical solution that adopts the following:

[0006] A one-way valve, comprising a valve body, a one-way valve valve is slidably arranged inside the valve body, and the one-way valve valve is made of polytetrafluoroethylene;

[0007] The valve body includes a one-way valve upper shell and a one-way valve lower shell, which are detachably connected. The one-way valve upper shell is partially placed inside the one-way valve lower shell, and the one-way valve valve is placed inside the one-way valve upper shell. A first flow hole is opened on the side wall of the one-way valve upper shell for facilitating gas circulation, and an adjustment sleeve is threadedly connected to the outer wall of the part of the one-way valve upper shell placed on the one-way valve lower shell.

[0008] By adopting the above technical solution, polytetrafluoroethylene is selected as the material of the one-way valve, and carbon deposition will not occur on its surface, which can ensure good sealing performance and reduce the probability of sealing failure of the one-way valve. The detachable one-way valve is convenient for operators to maintain the one-way valve, and reduces the cost waste caused by overall replacement due to damage to some parts. The gas flowing through the one-way valve enters the lower shell of the one-way valve through the first flow hole. The operator can adjust the position of the adjusting sleeve according to actual needs, thereby adjusting the aperture size of the first flow hole to adjust the flow rate of the gas flowing through the one-way valve.

[0009] Optionally, a one-way valve seat is installed on one end of the one-way valve upper shell close to the one-way valve lower shell, an elastic member is fixed on the one-way valve seat, and one end of the elastic member facing away from the one-way valve seat abuts against the one-way valve.

[0010] By adopting the above technical solution, the one-way flow effect of the one-way valve is achieved through the elastic force of the elastic part and the pressure of the gas flowing through the one-way valve. During forward flow, the pressure is opposite to the direction of the elastic force, and the pressure is greater than the elastic force of the elastic part. The elastic part is compressed by the force to open the one-way valve, and the one-way valve is opened normally; during reverse flow, the pressure is in the same direction as the elastic part, and the elastic force of the elastic part drives the one-way valve to move toward the upper shell of the one-way valve, and the one-way valve is closed at this time.

[0011] Optionally, a boss is fixed to the inner wall of the one-way valve upper shell, and the one-way valve is in contact with the boss.

[0012] By adopting the above technical solution, the bottom diameter of the boss is smaller, and the flow velocity of the gas flowing through the boss increases at the bottom of the boss, making it easier for the gas flowing through the one-way valve to pass through the one-way valve in the forward direction.

[0013] Optionally, there is a certain gap between the outer side wall of the portion of the one-way valve upper shell disposed in the one-way valve lower shell and the inner side wall of the one-way valve lower shell.

[0014] By adopting the above technical solution, the gas flowing through the one-way valve passes through the first flow hole and then flows out of the one-way valve through the gap between the one-way valve upper shell and the one-way valve lower shell.

[0015] Optionally, there is a certain gap between the outer wall of the adjusting sleeve and the inner wall of the lower shell of the one-way valve.

[0016] By adopting the above technical solution, the gas flowing through the one-way valve enters the inside of the one-way valve through the valve opening of the one-way valve, and then flows out of the one-way valve through the gap between the adjusting sleeve and the lower shell of the one-way valve.

[0017] Optionally, a second flow hole for facilitating gas flow is provided on the valve seat of the one-way valve.

[0018] By adopting the above technical solution, the second flow hole reduces the probability of gas flowing through the one-way valve accumulating inside the one-way valve.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The one-way valve is made of polytetrafluoroethylene, which will not deposit carbon on its surface, ensuring good sealing and reducing the probability of sealing failure of the one-way valve.

[0021] 2. By providing an adjustment sleeve threadedly connected to the upper shell of the one-way valve, the operator can adjust the aperture of the first flow hole in time, thereby changing the gas flow speed of the first flow hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a one-way valve.

[0023] Figure 2 This is a partial enlarged view of a one-way valve.

[0024] Description of reference numerals:

[0025] 1. Valve body; 2. Check valve; 3. Check valve upper shell; 4. Check valve lower shell; 5. Check valve seat; 6. Elastic member; 7. Boss; 8. First flow hole; 9. Adjustment sleeve; 10. Second flow hole. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-2 This application is described in further detail.

[0027] The present application embodiment discloses a one-way valve. Figure 1-2, including a valve body 1, a one-way valve 2 is slidably arranged inside the valve body 1, and the one-way valve 2 is made of polytetrafluoroethylene; the one-way valve 2 is made of polytetrafluoroethylene, and carbon deposition will not occur on its surface, which can ensure good sealing and reduce the probability of sealing failure of the one-way valve; the valve body 1 includes a one-way valve upper shell 3 and a one-way valve lower shell 4, and the one-way valve upper shell 3 and the one-way valve lower shell 4 are detachably connected, and a part of the one-way valve upper shell 3 is placed inside the one-way valve lower shell 4, and the one-way valve 2 is placed inside the one-way valve upper shell 3; the detachable connection methods in this embodiment include but are not limited to card connection, bolt connection and threaded connection, etc., because they belong to the existing published technology, they are not listed one by one in this embodiment. In detail, in this embodiment, a threaded connection is preferred. At the same time, in this embodiment, a sealing member is also provided at the detachable connection part to prevent leakage at the detachable connection part of the one-way valve; the detachably installed one-way valve is convenient for the operator to maintain the one-way valve, and reduces the cost waste caused by the overall replacement due to damage to some parts; a one-way valve valve seat 5 is installed at one end of the one-way valve upper shell 3 close to the one-way valve lower shell 4, and an elastic member 6 is fixed on the one-way valve valve seat 5, and the end of the elastic member 6 facing away from the one-way valve valve seat 5 abuts against the one-way valve valve 2; in this embodiment, the elastic member 6 is a spring; the one-way flow effect of the one-way valve is achieved by the elastic force of the elastic member 6 and the pressure of the gas flowing through the one-way valve, and the pressure is positive during positive flow. When the pressure is in the opposite direction to the elastic force, and the pressure is greater than the elastic force of the elastic member 6, the elastic member 6 is compressed by the force to open the one-way valve 2, and the one-way valve is normally opened; when the flow is reversed, the pressure is in the same direction as the elastic member 6, and the elastic force of the elastic member 6 drives the one-way valve 2 to move toward the one-way valve upper shell 3, and the one-way valve is closed at this time; a boss 7 is fixed on the inner wall of the one-way valve upper shell 3, and the one-way valve 2 abuts against the boss 7; the bottom diameter of the boss 7 is relatively small, and the flow velocity of the gas flowing through the boss 7 increases at the bottom of the boss 7, making it easier for the gas flowing through the one-way valve to pass through the one-way valve in the forward direction. At the same time, the boss 7 structure is provided to increase the contact area between the one-way valve 2 and the one-way valve upper shell 3, thereby improving the sealing performance of the one-way valve; the side wall of the one-way valve upper shell 3 A first flow hole 8 is provided to facilitate gas circulation; the gas flowing through the one-way valve 2 enters the one-way valve lower shell 4 through the first flow hole 8; in the present embodiment, the one-way valve is provided with two first flow holes 8, and the two first flow holes are evenly distributed at the same horizontal height position on the one-way valve upper shell 3, and at the same time, the present scheme includes but is not limited to the number of first flow holes 8 being two, and the number of first flow holes 8 can be freely selected according to actual conditions; there is a certain gap between the outer wall of the part of the one-way valve upper shell 3 placed in the one-way valve lower shell 4 and the inner wall of the one-way valve lower shell 4; the gas flowing through the one-way valve 2 passes through the first flow hole 8 and then flows out of the one-way valve through the gap between the one-way valve upper shell 3 and the one-way valve lower shell 4.

[0028] Reference Figure 1-2The upper shell 3 of the one-way valve is placed on the outer wall of the lower shell 4 of the one-way valve, and an adjusting sleeve 9 is threadedly connected; the operator can adjust the position of the adjusting sleeve 9 according to actual needs to adjust the aperture size of the first flow hole 8, so as to adjust the flow rate of the gas flowing through the one-way valve; there is a certain gap between the outer wall of the adjusting sleeve 9 and the inner wall of the lower shell 4 of the one-way valve; the gas flowing through the one-way valve enters the inside of the one-way valve through the valve 2 of the one-way valve, and then flows out of the one-way valve through the gap between the adjusting sleeve 9 and the lower shell 4 of the one-way valve; a second flow hole 10 is provided on the valve seat 5 of the one-way valve to facilitate the flow of gas; the second flow hole 10 reduces the probability of gas flowing through the one-way valve accumulating inside the one-way valve.

[0029] The implementation principle of a one-way valve in an embodiment of the present application is: the one-way flow effect of the one-way valve is achieved by the elastic force of the elastic member 6 and the pressure of the gas flowing through the one-way valve. During forward flow, the pressure is opposite to the direction of the elastic force, and the pressure is greater than the elastic force of the elastic member 6. The elastic member 6 is compressed by the force to open the one-way valve 2 and the one-way valve is opened normally; during reverse flow, the pressure is in the same direction as the elastic member 6, and the elastic force of the elastic member 6 drives the one-way valve 2 to move toward the upper shell 3 of the one-way valve. At this time, the one-way valve is closed. At the same time, the operator can adjust the position of the adjusting sleeve 9 according to actual needs, so as to adjust the aperture size of the first flow hole 8, so as to adjust the flow rate of the gas flowing through the one-way valve.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A one-way valve, comprising a valve body (1), wherein a one-way valve (2) is slidably arranged inside the valve body (1), characterized in that: The one-way valve (2) is made of polytetrafluoroethylene; The valve body (1) comprises a one-way valve upper shell (3) and a one-way valve lower shell (4), the one-way valve upper shell (3) and the one-way valve lower shell (4) are detachably connected, the one-way valve upper shell (3) is partially placed inside the one-way valve lower shell (4), and the one-way valve valve (2) is placed inside the one-way valve upper shell (3), a first flow hole (8) for facilitating gas circulation is provided on the side wall of the one-way valve upper shell (3), and an adjustment sleeve (9) is threadedly connected to the outer side wall of the part of the one-way valve upper shell (3) placed on the one-way valve lower shell (4).

2. A one-way valve according to claim 1, characterized in that: A one-way valve seat (5) is installed on one end of the one-way valve upper shell (3) close to the one-way valve lower shell (4), an elastic member (6) is fixed on the one-way valve seat (5), and the end of the elastic member (6) facing away from the one-way valve seat (5) abuts against the one-way valve (2).

3. A one-way valve according to claim 1, characterized in that: A boss (7) is fixed on the inner wall of the one-way valve upper shell (3), and the one-way valve (2) abuts against the boss (7).

4. A one-way valve according to claim 1, characterized in that: There is a certain gap between the outer side wall of the part of the one-way valve upper shell (3) placed in the one-way valve lower shell (4) and the inner side wall of the one-way valve lower shell (4).

5. A one-way valve according to claim 1, characterized in that: There is a certain gap between the outer wall of the adjustment sleeve (9) and the inner wall of the one-way valve lower shell (4).

6. A one-way valve according to claim 2, characterized in that: The one-way valve seat (5) is provided with a second flow hole (10) for facilitating gas flow.

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