Small air breaking valve

Abstract

The utility model relates to the technical field of valves, in particular to a small air breaking valve which comprises a valve body and a valve deck installed on the valve body, the valve body is provided with a first flow channel and a second flow channel, the first flow channel is communicated with the second flow channel, a moving part used for blocking the first flow channel is arranged in the valve body in a sliding mode, and the valve deck is installed on the valve body. The valve body is provided with a driving piece used for driving the moving piece to move, and the valve body is further provided with a blocking assembly used for blocking the second flow channel. The valve has the advantages that the valve has the excellent sealing effect in the vacuum and high-pressure environment, the stability of the structure and performance of the valve is kept, fluid is effectively isolated, leakage is prevented, and safe operation of nuclear industry equipment and systems is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a small air-breaking valve. Background Art

[0002] Nuclear valves, as one of the key equipment in the nuclear industry, are closely related to the rise and development of the nuclear industry. With the growing demand for energy and the pursuit of clean energy, nuclear energy, as an efficient and clean energy form, has gradually attracted the attention of countries around the world. In the nuclear industry, medium backflow may lead to serious consequences, such as leakage of radioactive materials and equipment damage. Therefore, there is a need for a valve that can ensure excellent sealing effect in both vacuum and high pressure environments, maintain the stability of its structure and performance, effectively isolate fluids, prevent leakage, and ensure the safe operation of nuclear industry equipment and systems. Utility Model Content

[0003] In order to make the valve have excellent sealing effect in vacuum and high-pressure environments, maintain the stability of its structure and performance, effectively isolate the fluid, prevent leakage, and ensure the safe operation of nuclear industry equipment and systems, the present application provides a small air-breaking valve.

[0004] The present application provides a small air-breaking valve, which adopts the following technical solution:

[0005] A small air-breaking valve comprises a valve body and a valve cover mounted on the valve body, wherein the valve body is provided with a first flow channel and a second flow channel, the first flow channel is connected to the second flow channel, a moving part for blocking the first flow channel is slidably arranged in the valve body, a driving part for driving the moving part to move is arranged on the valve body, and a blocking component for blocking the second flow channel is also arranged on the valve body.

[0006] By adopting the above technical solution, when the valve body needs to be sealed, the user can drive the movable member to move through the driving member, so that the movable member moves and blocks the first flow channel, and then blocks the second flow channel through the blocking component, so that both flow channels on the valve body are sealed, forming a double blockage, so that the valve has an excellent sealing effect in vacuum and high-pressure environments, maintains the stability of its structure and performance, effectively isolates the fluid, prevents leakage, and ensures the safe operation of nuclear industry equipment and systems.

[0007] Preferably, the moving part is a sealing gasket.

[0008] By adopting the above technical solution and setting the sealing gasket, the sealing gasket can be attached to the end of the first flow channel to block the first flow channel, thereby achieving sealing of the first flow channel.

[0009] Preferably, a connecting seat is installed on the valve cover, a movable seat is arranged on the connecting seat, the sealing gasket is installed on the movable seat, and a bellows is arranged between the movable seat and the connecting seat.

[0010] By adopting the above technical solution, through the arrangement of the connecting seat, the movable seat and the bellows, when the sealing gasket moves, the movable seat moves with the sealing gasket, and the bellows also moves with the movement of the movable seat, and the movement of the bellows does not affect the normal protective function of the bellows, thereby reducing the impact on internal components when the valve is used, and at the same time, the moving parts inside the valve body are isolated to prevent leakage from the gaps between the moving parts in the valve body.

[0011] Preferably, the driving member is a threaded rod threadedly connected to the valve cover, and the threaded rod is rotatably connected to the movable seat.

[0012] By adopting the above technical solution and setting the threaded rod, when the movable seat needs to be driven to move, the user can rotate the threaded rod. The rotation of the threaded rod will cause the threaded rod to move on the valve cover, thereby driving the movable seat to move, thereby realizing the movement of the movable seat.

[0013] Preferably, a hexagonal handle is installed on one end of the threaded rod away from the movable seat.

[0014] By adopting the above technical solution and setting the hexagonal head handle, on the one hand, the hexagonal head handle is convenient for the user to rotate manually, and on the other hand, the hexagonal head handle is convenient for the user to screw it with a tool, so that the user can seal the first flow channel through the sealing gasket, so that the sealing gasket can stably realize the sealing of the first flow channel.

[0015] Preferably, a positioning steel ball is rotatably provided on the movable seat, and the positioning steel ball is attached to the threaded rod.

[0016] By adopting the above technical solution, through the setting of the positioning steel ball, the positioning steel ball is pushed by the threaded rod to push the moving seat to move, which plays a positioning role in the movement of the moving seat, making it easy to stably push the moving seat to move so that the sealing gasket fits on the end of the first flow channel.

[0017] Preferably, the sealing assembly includes a piston detachably connected to the valve body and a nut threadedly connected to the valve body, the piston can be inserted into the second flow channel and seal the second flow channel, the nut is used to limit the piston, and a sealing ring is also provided between the piston and the valve body.

[0018] By adopting the above technical solution, through the arrangement of the piston, nut and sealing ring, the second flow channel is sealed with the piston and the sealing ring, and the piston is limited by the nut, so that the piston and the sealing ring stably block the second flow channel, forming a double-layer seal and ensuring the sealing effect.

[0019] Preferably, a flange is installed on the valve body.

[0020] By adopting the above technical solution and setting the flange, it is convenient to connect the valve body with the external pipeline.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Through the arrangement of the driving member, the moving member and the blocking assembly, when sealing is required, the user can drive the driving member to block a flow channel on the moving member valve body to seal. When the sealing is required to be higher, the user can also block another flow channel on the valve body through the blocking assembly. The two flow channels on the valve body are blocked, forming a double blockage, so that the valve has an excellent sealing effect in vacuum and high pressure environments, maintains the stability of its structure and performance, effectively isolates the fluid, prevents leakage, and ensures the safe operation of nuclear industry equipment and systems;

[0023] 2. The bellows can effectively protect the internal parts of the valve body, ensuring the service life of the valve body. At the same time, the moving parts inside the valve body are isolated to prevent leakage from the gaps between the moving parts in the valve body.

[0024] 3. Through the setting of the hexagonal handle, on the one hand, the hexagonal handle is convenient for the user to rotate manually, and on the other hand, the hexagonal handle is convenient for the user to screw with a tool, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric diagram mainly showing the overall structure in the embodiment of the present application;

[0026] Figure 2 It is a cross-sectional schematic diagram mainly showing the overall structure in the embodiment of the present application.

[0027] Figure numerals: 1. valve body; 2. valve cover; 3. first flow channel; 4. second flow channel; 5. blocking assembly; 51. piston; 52. nut; 6. sealing gasket; 7. connecting seat; 8. movable seat; 9. bellows; 10. threaded rod; 20. hexagonal handle; 30. positioning steel ball; 40. sealing ring; 50. flange. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 2This application is described in further detail.

[0029] The embodiment of the present application discloses a small air breaker valve.

[0030] like Figure 1 and 2 As shown, a small air-breaking valve includes a valve body 1 and a valve cover 2, the valve cover 2 is installed on the valve body 1, a first flow channel 3 and a second flow channel 4 are opened in the valve body 1, and the first flow channel 3 is connected to the second flow channel 4, and a flange 50 is installed on the valve body 1 at the position of the first flow channel 3, and the flange 50 is convenient for connection with external pipelines and is easy to use.

[0031] like Figure 1 and 2 As shown, a moving part for blocking the first flow channel 3 is slidably provided in the valve body 1, and a driving part for driving the moving part to move is also provided on the valve body 1, and the driving part is a threaded rod 10 threadedly connected to the valve cover 2, and a hexagonal head handle 20 is installed on the threaded rod 10. A connecting seat 7 is also threadedly connected to the valve cover 2, and a moving seat 8 is sleeved in the connecting seat 7. A bellows 9 is also provided between the connecting seat 7 and the moving seat 8, and one end of the bellows 9 is connected to the moving seat 8, and the other end of the bellows 9 is connected to the connecting seat 7. The bellows 9 completely covers the part of the connecting seat 7 where the moving seat 8 is sleeved, and the gap where the connecting seat 7 and the moving seat 8 are connected is sealed. The end of the movable seat 8 close to the threaded rod 10 is rotatably provided with a positioning steel ball 30, and the center of the positioning steel column is located on the axial extension line of the threaded rod 10. The end of the threaded rod 10 close to the movable seat 8 is fitted with the positioning steel ball 30 to ensure that the threaded rod 10 is aligned, and the end of the threaded rod 10 close to the movable seat 8 is rotatably connected to the movable seat 8 and is limited by the movable seat 8, so that the movement of the threaded rod 10 will drive the movable seat 8 to move, and the movable seat 8 will be guided by the connecting seat 7 during the movement to ensure that the moving direction is correct. The moving part is a sealing gasket 6, and the sealing gasket 6 is clamped and fixed to the end of the movable seat 8 away from the connecting seat 7. During use, when the valve body 1 needs to be sealed, the user can manually rotate the hexagonal handle 20 or use a tool to screw the hexagonal handle 20 to rotate the threaded rod 10. The rotation of the threaded rod 10 will cause the threaded rod 10 to move, thereby causing the movable seat 8 to move, and the movement of the movable seat 8 will cause the sealing gasket 6 to move, thereby causing the sealing gasket 6 to move to the end of the first flow channel 3 and block the first flow channel 3, thereby sealing the first flow channel 3.

[0032] like Figure 1 and 2As shown, the valve body 1 is also provided with a sealing component 5 for sealing the second flow channel 4. The sealing component 5 includes a piston 51 and a nut 52. The piston 51 can be inserted into the second flow channel 4 to seal the second flow channel 4. In order to ensure the sealing of the piston 51 to the second flow channel 4, a sealing ring 40 is also installed on the inner wall of the second flow channel 4. The sealing ring 40 is located between the valve body 1 and the piston 51, and is used to seal the gap between the piston 51 and the inner wall of the second flow channel 4. The nut 52 is threadedly connected to the valve body 1. The nut 52 can limit the piston 51 inserted into the second flow channel 4, so that the piston 51 can stably seal the second flow channel 4.

[0033] The implementation principle of the embodiment of the present application is as follows: when put into actual use, under normal circumstances, the valve body 1 can be connected to the pipeline for use, and the first flow channel 3 and the second flow channel 4 connected in the valve are used for connection. The entire valve can be made of highly corrosion-resistant and high-strength metal materials, such as stainless steel or special alloys, to adapt to extreme environments such as high temperature, high pressure, and high radiation in the nuclear industry. The overall design of the valve is compact, small in size, and easy to install. When the valve needs to be closed, the user can rotate the hexagonal handle 20 to rotate the threaded rod 10. The rotation of the threaded rod 10 will push the movable seat 8 to move, thereby moving the sealing gasket 6, so that the sealing gasket 6 is inserted into and blocks the first flow channel 3, blocks the first flow channel 3, and realizes the sealing of the valve. The user can also block the second flow channel 4 through the piston 51, the nut 52, and the sealing ring 40, further ensuring the sealing of the valve.

[0034] 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 small air-breaking valve, characterized in that: The invention comprises a valve body (1) and a valve cover (2) mounted on the valve body (1); the valve body (1) is provided with a first flow channel (3) and a second flow channel (4); the first flow channel (3) is connected to the second flow channel (4); a moving part for blocking the first flow channel (3) is slidably arranged in the valve body (1); a driving part for driving the moving part to move is arranged on the valve body (1); and a blocking component (5) for blocking the second flow channel (4) is also arranged on the valve body (1).

2. A small air-breaking valve according to claim 1, characterized in that: The moving part is a sealing gasket (6).

3. A small air-breaking valve according to claim 2, characterized in that: A connecting seat (7) is installed on the valve cover (2), a movable seat (8) is arranged on the connecting seat (7), the sealing gasket (6) is installed on the movable seat (8), and a bellows (9) is arranged between the movable seat (8) and the connecting seat (7).

4. A small air-breaking valve according to claim 3, characterized in that: The driving member is a threaded rod (10) threadedly connected to the valve cover (2), and the threaded rod (10) is rotatably connected to the movable seat (8).

5. A small air-breaking valve according to claim 4, characterized in that: A hexagonal handle (20) is installed at one end of the threaded rod (10) away from the movable seat (8).

6. A small air-breaking valve according to claim 4, characterized in that: A positioning steel ball (30) is rotatably arranged on the movable seat (8), and the positioning steel ball (30) is fitted on the threaded rod (10).

7. A small air-breaking valve according to claim 1, characterized in that: The blocking assembly (5) comprises a piston (51) detachably connected to the valve body (1) and a nut (52) threadedly connected to the valve body (1); the piston (51) can be inserted into the second flow channel (4) to block the second flow channel (4); the nut (52) is used to limit the position of the piston (51); and a sealing ring (40) is also provided between the piston (51) and the valve body (1).

8. A small air-breaking valve according to claim 1, characterized in that: A flange (50) is mounted on the valve body (1).

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