Manual rotary exhaust valve with double O-shaped ring sealing

Abstract

The utility model relates to the field of valves, in particular to a manual rotary exhaust valve with double O-shaped ring seals, which comprises a valve body, one end of the valve body is connected with a valve core, one end of the valve body is connected with a valve cover, one end of the valve body is provided with a first thread groove, the inner wall of the valve cover is provided with a second thread groove, and a first O-shaped ring and a second O-shaped ring are arranged in the valve body. When the check valve is used, gas enters the valve element through the vent hole, the first O-shaped ring in the sealing groove forms reliable sealing between the valve element and the valve shell, gas or liquid is prevented from leaking from the joint of the valve element and the valve shell, meanwhile, the second O-shaped ring is tightly attached to the inner wall of the valve shell, and after the valve element rotates in place, the gas or the liquid is prevented from leaking from the joint of the valve element and the valve shell. And when the valve element rotates and loosens, the exhaust channel is gradually opened, so that the gas or the liquid in the valve body can be exhausted through the exhaust channel.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a manual rotary exhaust valve with double O-ring seals. Background Technology

[0002] Valves are crucial components in fluid control systems, used to regulate, cut off, or change the flow direction, pressure, and flow rate of fluids (gas, liquid, steam, etc.).

[0003] In existing exhaust valves, some valves have poor sealing performance, which can easily lead to gas or liquid leakage, affecting the normal operation and safety of the system. Some manual exhaust valves, due to unreasonable sealing structure design, experience seal failure during rotational exhaust, failing to effectively relieve pressure in the cavity. Furthermore, for applications requiring both excellent overall sealing and reliable sealing of rotating components during exhaust, existing exhaust valves are insufficient. Therefore, it is necessary to develop a manual rotary exhaust valve with double O-ring seals to improve the sealing performance and reliability of the exhaust valve. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing exhaust valves, such as poor sealing performance of some valves, which can easily lead to gas or liquid leakage and affect the normal operation and safety of the system. The invention proposes a manual rotary exhaust valve with double O-ring seals.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manual rotary exhaust valve with double O-ring seals includes a valve body, a valve core connected to one end of the valve body, a valve cover connected to one end of the valve body, a first threaded groove on one end of the valve body, a second threaded groove on the inner wall of the valve cover, and a first O-ring and a second O-ring disposed inside the valve body.

[0007] Preferably, the valve body has a first cavity inside, the valve core has a third threaded groove on its surface, one end of the valve body has a fourth threaded groove on its inner diameter, the fourth threaded groove corresponds to the third threaded groove, and the valve core has a fifth threaded groove on its surface, the fifth threaded groove being located inside the first cavity.

[0008] Preferably, the valve body has a second cavity inside, the valve core has an annular sealing groove on its surface, the second O-ring is installed in the sealing groove, and the outer ring of the second O-ring abuts against the inner wall of the valve core.

[0009] Preferably, a circular groove is provided in the second cavity, a circular block is fixedly connected to one end of the valve core, the circular block is located in the circular groove, a sealing groove is provided at one end of the valve core, and the first O-ring is installed in the sealing groove.

[0010] Preferably, the first threaded groove corresponds to the second threaded groove, and the valve core is provided with an exhaust port, which is located between the second O-ring and the first O-ring.

[0011] Preferably, the valve core has an internal vent hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. Multiple sealing protection: Multiple seals reduce the risk of leakage. The entire exhaust valve is sealed by the first set of threads between the valve core and the valve body and the first O-ring, preventing the entry of external media or leakage of internal media; the second O-ring achieves sealing and venting based on the compression deformation during valve core rotation.

[0014] 2. Easy to operate: The opening and closing of the exhaust valve can be controlled by manually rotating the knurled valve body. The operation is simple and convenient, without the need for a complicated drive device or control system.

[0015] 3. Simple structure: The overall structure is relatively simple, with fewer parts, which makes it easy to manufacture, install and maintain, reducing production costs and maintenance difficulty. It is also small in size and has an exquisite appearance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a manual rotary exhaust valve with double O-ring seals proposed in this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the internal structure of a manual rotary exhaust valve with double O-ring seals proposed in this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the first and second O-rings of a manual rotary exhaust valve with double O-ring seals proposed in this utility model.

[0019] In the diagram: 1. Valve body; 2. Valve core; 3. Valve cover; 4. First threaded groove; 5. Second threaded groove; 6. First O-ring; 7. Second O-ring; 8. First cavity; 9. Fifth threaded groove; 10. Second cavity; 11. Sealing groove; 12. Circular block; 13. Exhaust port; 14. Vent hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-3 A manual rotary exhaust valve with double O-ring seals includes a valve body 1, a valve core 2 connected to one end of the valve body 1, a valve cover 3 connected to one end of the valve body 1, a first threaded groove 4 opened at one end of the valve body 1, a second threaded groove 5 opened on the inner wall of the valve cover 3, and a first O-ring 6 and a second O-ring 7 arranged inside the valve body 1.

[0022] This invention is applicable to various fluid systems that require manual control of venting and have high requirements for sealing performance, with a working pressure of less than or equal to 0.8 MPa.

[0023] Furthermore, a first cavity 8 is provided inside the valve body 1, a third threaded groove is provided on the surface of the valve core 2, a fourth threaded groove is provided on the inner diameter of one end of the valve body 1, the fourth threaded groove corresponds to the third threaded groove, and a fifth threaded groove 9 is provided on the surface of the valve core 2, the fifth threaded groove 9 being located inside the first cavity 8.

[0024] Among them, the multiple threaded grooves provided on the valve core 2 or valve body allow gas or liquid to be discharged only through the exhaust port 13.

[0025] Furthermore, a second cavity 10 is provided inside the valve body 1, and an annular sealing groove 11 is provided on the surface of the valve core 2. A second O-ring 7 is installed in the sealing groove 11, and the outer ring of the second O-ring 7 abuts against the inner wall of the valve core 2.

[0026] The first threaded groove 4 corresponds to the second threaded groove 5, and the valve core 2 is provided with an exhaust port 13, which is located between the second O-ring 7 and the first O-ring 6.

[0027] The second O-ring fits tightly against the inner wall of the valve body. After the valve core 2 is rotated into place, it prevents gas or liquid in the cavity from leaking from the gap between the valve core 2 and the valve body. When the valve core 2 is rotated loose, the exhaust channel gradually opens, allowing gas or liquid in the valve body 1 to be discharged through the exhaust channel.

[0028] Furthermore, a circular groove is provided in the second cavity 10, and a circular block 12 is fixedly connected to one end of the valve core 2. The circular block 12 is located in the circular groove, and a sealing groove is provided in one end of the valve core 2. The first O-ring 6 is installed in the sealing groove.

[0029] When the valve core 2 and the valve body are tightened together by threads, the first O-ring is compressed, thereby forming a reliable seal between the valve core 2 and the valve body to prevent gas or liquid from leaking from the connection between the two.

[0030] The valve core 2 has a vent hole 14 inside, and the valve body 1 has an exhaust channel at one end.

[0031] Gas enters the valve core 2 through the vent 14, and then the gas is discharged from the exhaust port by rotating the valve core 2 to loosen it.

[0032] The working principle of this utility model:

[0033] Gas enters the valve core 2 through the vent 14. The first O-ring 6 in the sealing groove 11 forms a reliable seal between the valve core 2 and the valve body, preventing gas or liquid from leaking from the connection between the two. At the same time, the second O-ring fits tightly against the inner wall of the valve body, preventing gas or liquid in the cavity from leaking from the gap between the valve core 2 and the valve body after the valve core 2 is rotated into place. When the valve core 2 is rotated and loosened, the exhaust channel gradually opens, allowing gas or liquid in the valve body 1 to be discharged through the exhaust channel.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A manually rotating vent valve with dual 0-ring seal comprising a valve body (1) characterized in that, One end of the valve body (1) is connected with a valve core (2), one end of the valve body (1) is connected with a valve cover (3), one end of the valve body (1) is provided with a first threaded groove (4), the inner wall of the valve cover (3) is provided with a second threaded groove (5), the inside of the valve body (1) is provided with a first O-shaped ring (6) and a second O-shaped ring (7).

2. A manual rotary vent valve having dual 0-ring seals as defined in claim 1, wherein, The inside of the valve body (1) is provided with a first cavity (8), the surface of the valve core (2) is provided with a third threaded groove, the inner diameter of one end of the valve body (1) is provided with a fourth threaded groove, the fourth threaded groove corresponds to the third threaded groove, the surface of the valve core (2) is provided with a fifth threaded groove (9), and the fifth threaded groove (9) is located in the first cavity (8).

3. A manual rotary vent valve having a double 0-ring seal as defined in claim 2, wherein, The inside of the valve body (1) is provided with a second cavity (10), the surface of the valve core (2) is provided with an annular sealing groove (11), the second O-shaped ring (7) is installed in the sealing groove (11), and the outer ring of the second O-shaped ring (7) abuts against the inner wall of the valve core (2).

4. A manual rotary vent valve having a double 0-ring seal as defined in claim 3, wherein, A circular groove is formed in the second cavity (10), one end of the valve core (2) is fixedly connected with a circular block (12), the circular block (12) is located in the circular groove, one end of the valve core (2) is provided with a sealing groove, and the first O-shaped ring (6) is installed in the sealing groove.

5. A manually operated rotary vent valve having a double 0-ring seal as defined in claim 4, wherein, The first threaded groove (4) corresponds to the second threaded groove (5), the valve core (2) is provided with an exhaust port (13), and the exhaust port (13) is located between the second O-shaped ring (7) and the first O-shaped ring (6).

6. A manually operated rotary vent valve having a double 0-ring seal as defined in claim 5, wherein, The inside of the valve core (2) is provided with a gas permeable hole (14).

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