CN213393567U - Anti-leakage gas valve - Google Patents
Anti-leakage gas valve Download PDFInfo
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- CN213393567U CN213393567U CN202022412128.2U CN202022412128U CN213393567U CN 213393567 U CN213393567 U CN 213393567U CN 202022412128 U CN202022412128 U CN 202022412128U CN 213393567 U CN213393567 U CN 213393567U
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- valve
- valve rod
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- sealing plate
- step surface
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Abstract
The utility model discloses a leakage-proof gas valve, which comprises a valve body, a valve rod and a valve cap, wherein an air inlet cavity and an air outlet cavity which are communicated through a communication hole are arranged in the valve body, the air inlet cavity is communicated with an air inlet pipe, the air outlet cavity is communicated with an air outlet pipe, the end parts of the air inlet pipe and the exhaust pipe are respectively provided with a pipeline connecting piece, a first step surface and a second step surface are arranged in the communicating hole, arc grooves are arranged on the first step surface and the second step surface, a valve core is rotatably arranged at the end part of the valve rod extending into the exhaust cavity, two sealing rings matched with the two arc-shaped grooves are arranged on the valve core, a mounting opening sealing plate is arranged on the valve body, a convex ring is arranged on the back surface of the mounting opening sealing plate, one end of the elastic stretchable sealing element is fixed in a fixing groove on the convex ring, the other end of the valve core is fixed on the valve core, a valve rod sleeve is arranged on the outer side of the mounting opening sealing plate, and the valve cap is connected with the valve rod through a bolt. The utility model has the advantages of simple structure and reasonable design, sealing performance is good, can effectively avoid coal gas to outwards leak from the valve.
Description
Technical Field
The utility model relates to a valve, specific leak-proof gas valve that says so.
Background
The valve is difficult to avoid the problem of air leakage generally, and the air leakage degree of the valves made of different materials and structures is different. For gas valves, a severe leak may compromise the personal safety of the user.
Disclosure of Invention
In order to solve the problem, the utility model provides a gas valve which has good air tightness and can effectively prevent gas leakage.
In order to achieve the purpose, the utility model discloses a realize through following technical scheme:
the utility model relates to a leakage-proof gas valve, which comprises a valve body, a valve rod and a valve cap, wherein an air inlet cavity and an air outlet cavity which are communicated through a communication hole are arranged in the valve body, the air inlet cavity is communicated with the air inlet pipe, the air outlet cavity is communicated with the exhaust pipe, the end parts of the air inlet pipe and the exhaust pipe are respectively provided with a pipeline connecting piece, the communication hole is a step hole, a first step surface and a second step surface are arranged in the communication hole, the first step surface and the second step surface are respectively provided with an arc-shaped groove, the end part of the valve rod which extends into the air outlet cavity can be rotatably provided with a valve core, the valve core is in interference fit with the valve rod, the valve core is provided with two sealing rings which are matched with the two arc-shaped grooves, a mounting port sealing plate is arranged on the valve body, the mounting port sealing plate is welded and, the other end of the elastic stretchable sealing element is welded and fixed on the valve core, a valve rod sleeve is arranged on the outer side of the mounting opening sealing plate, the valve rod is in threaded connection with the valve rod sleeve, and the valve cap is connected with the valve rod through a bolt.
The utility model discloses a further improvement lies in: the valve body is provided with a limiting sealing plate for limiting the mounting opening sealing plate, the surface of the limiting sealing plate contacting with the mounting opening sealing plate is provided with a filling groove, and the filling groove is filled with sealant.
The utility model discloses a further improvement lies in: a circle of convex blocks are arranged at the end part of the valve rod, and the bottom of the assembling hole of the valve core is matched with the convex blocks.
The utility model discloses a further improvement lies in: the elastic stretchable sealing element comprises a first end plate and a second end plate, a corrugated pipe is arranged between the first end plate and the second end plate, a protrusion concentric with the second end plate is arranged on the surface of the second end plate, the second end plate is pressed in a fixing groove through a pressing plate, grooves matched with the protrusion are formed in the pressing plate and the fixing groove, and the first end plate is welded and fixed on the valve core.
The utility model has the advantages that: when the valve is closed, the valve core and the passage hole realize two seals through two sealing rings to block the gas from flowing in the valve. The elastic stretchable sealing element is arranged between the valve core and the mounting hole sealing plate, so that when the valve is opened, gas can be effectively prevented from leaking to the outer side of the valve body from a gap between the valve rod and the mounting hole sealing plate, and the problem of gas leakage of the valve is solved.
The utility model has the advantages of simple structure and reasonable design, sealing performance is good, can effectively avoid coal gas to outwards leak from the valve.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1-valve body, 2-valve rod, 3-valve cap, 4-communication hole, 5-air inlet cavity, 6-air outlet cavity, 7-valve core, 8-mounting opening sealing plate, 9-valve rod sleeve and 10-elastic stretchable sealing element.
Detailed Description
In order to enhance the understanding of the present invention, the present invention will be described in detail with reference to the following embodiments and the accompanying drawings, wherein the embodiments are only used for explaining the present invention, and do not limit the protection scope of the present invention.
As shown in figure 1, the utility model relates to a leakage-proof gas valve, which comprises a valve body 1, a valve rod 2 and a valve cap 3, wherein an air inlet cavity 5 and an air outlet cavity 6 communicated with each other through a communication hole 4 are arranged in the valve body 1, the air inlet cavity 5 is communicated with an air inlet pipe, the air outlet cavity 6 is communicated with an air outlet pipe, the end parts of the air inlet pipe and the air outlet pipe are respectively provided with a pipeline connecting piece, the communication hole 4 is a step hole, the communication hole 4 is internally provided with a first step surface and a second step surface, the first step surface and the second step surface are respectively provided with an arc-shaped groove, the end part of the valve rod 2 extending into the air outlet cavity 6 is rotatably provided with a valve core 7, the valve core 7 is in interference fit with the valve rod 2, the valve core 7 is provided with two sealing rings matched with the two arc-shaped grooves, the valve body 1 is provided with a mounting, the convex ring is provided with a fixing groove, one end of the elastic tensile sealing element 10 is fixed in the fixing groove, the other end of the elastic tensile sealing element 10 is welded and fixed on the valve core 7, a valve rod sleeve 9 is arranged on the outer side of the mounting opening sealing plate 8, the valve rod 2 is in threaded connection with the valve rod sleeve 9, and the valve cap 3 is connected with the valve rod 2 through a bolt.
The valve body 1 is provided with a limit sealing plate for limiting the mounting opening sealing plate 8, a filling groove is formed in the surface of the limit sealing plate contacting with the mounting opening sealing plate 8, and sealant is filled in the filling groove.
The elastic stretchable sealing member 10 comprises a first end plate and a second end plate, a corrugated pipe is arranged between the first end plate and the second end plate, a protrusion concentric with the second end plate is arranged on the surface of the second end plate, the second end plate is pressed in a fixing groove through a pressing plate, grooves matched with the protrusion are formed in the pressing plate and the fixing groove, and the first end plate is welded and fixed on the valve core 7.
A circle of convex blocks are arranged at the end part of the valve rod 2, and the bottom of the assembling hole of the valve core 7 is matched with the convex blocks. When the valve rod 2 is rotated, the valve core 7 moves back and forth along with the valve rod 2, when the valve is closed, after a sealing ring on the valve core 7 is contacted with an arc-shaped groove on the communication hole 4, the valve core 7 can be subjected to friction force, the valve core 7 and the valve rod 2 rotate relatively, the valve cap 3 is continuously screwed, the valve rod pushes the valve core 7 to be extruded into the communication hole 4, the sealing ring deforms, sealing is realized, and the valve is closed.
The utility model has the advantages of simple structure and reasonable design, sealing performance is good, can effectively avoid coal gas to outwards leak from the valve.
Claims (4)
1. The utility model provides a prevent leaking gas valve, includes valve body (1), valve rod (2) and valve cap (3) be provided with admit air chamber (5) and exhaust chamber (6) through intercommunicating pore (4) intercommunication in valve body (1), admit air chamber (5) and intake pipe intercommunication, exhaust chamber (6) and blast pipe intercommunication the intake pipe all is provided with pipe connection spare, its characterized in that with the tip of blast pipe: the exhaust valve is characterized in that the communicating hole (4) is a step hole, a first step surface and a second step surface are arranged in the communicating hole (4), arc-shaped grooves are formed in the first step surface and the second step surface, a valve core (7) is rotatably arranged at the end part of the valve rod (2) extending into the exhaust cavity (6), the valve core (7) is in interference fit with the valve rod (2), a sealing ring matched with the two arc-shaped grooves is arranged on the valve core (7), a mounting port sealing plate (8) is arranged on the valve body (1), the mounting port sealing plate (8) is fixedly welded on the valve body (1), a convex ring is arranged on the back surface of the mounting port sealing plate (8), a fixing groove is formed in the convex ring, one end of an elastic tensile sealing element (10) is fixed in the fixing groove, and the other end of the elastic tensile sealing element (10) is fixedly welded on the valve core (7), installing port shrouding (8) outside is provided with valve rod sleeve pipe (9), valve rod (2) with valve rod sleeve pipe (9) threaded connection, valve cap (3) with valve rod (2) pass through bolted connection.
2. A leak-proof gas valve according to claim 1, characterized in that: the valve body (1) is provided with a limiting sealing plate for limiting the mounting opening sealing plate (8), the surface of the limiting sealing plate, which is in contact with the mounting opening sealing plate (8), is provided with a filling groove, and the filling groove is filled with sealant.
3. A leak-proof gas valve according to claim 1, characterized in that: a circle of convex blocks are arranged at the end part of the valve rod (2), and the bottom of the assembly hole of the valve core (7) is matched with the convex blocks.
4. A leak-proof gas valve according to claim 1, characterized in that: the elastic stretchable sealing element (10) comprises a first end plate and a second end plate, a corrugated pipe is arranged between the first end plate and the second end plate, a protrusion concentric with the second end plate is arranged on the surface of the second end plate, the second end plate is pressed in the fixing groove through a pressing plate, grooves matched with the protrusion are formed in the pressing plate and the fixing groove, and the first end plate is fixed on the valve core (7) in a welded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412128.2U CN213393567U (en) | 2020-10-27 | 2020-10-27 | Anti-leakage gas valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022412128.2U CN213393567U (en) | 2020-10-27 | 2020-10-27 | Anti-leakage gas valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393567U true CN213393567U (en) | 2021-06-08 |
Family
ID=76190638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022412128.2U Active CN213393567U (en) | 2020-10-27 | 2020-10-27 | Anti-leakage gas valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393567U (en) |
-
2020
- 2020-10-27 CN CN202022412128.2U patent/CN213393567U/en active Active
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