Liquefied gas valve

Abstract

The utility model relates to a liquefied gas valve which comprises a valve body, a gas valve core, a gas valve core and a gas valve core, the valve cover is fixed on the valve body; the push rod penetrates through the fuel gas channel, a pulling groove is formed in the bottom of the push rod, and a sealing ring is sleeved with the push rod; the rotating shaft is fixed in the valve body; the lever rotates on the rotating shaft, and a pulling part and a lifting part are formed on the lever; the diaphragm bracket is positioned in the valve body and is provided with a through hole at the bottom; the diaphragm is fixed between the valve cover and the valve body; the diaphragm pressing plate is sleeved on the diaphragm bracket; the connecting rod slides on the valve cover, and a pulling bulge is arranged at the top of the connecting rod; the first spring is sleeved on the connecting rod; the lifting cover slides on the connecting rod and is clamped with the pulling bulge; and the second spring is sleeved on the lifting cover, and two ends of the second spring are respectively propped against the lifting cover and the valve cover. When the gas valve is used, the lifting cover of the gas valve is lifted, so that a user can simply and easily identify that the gas valve is in a use state, the risk that the user mistakenly touches the lifting cover on the gas valve is reduced, and the use experience feeling of the user is improved.

Description

Technical Field

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

[0002] The use of gas has brought great convenience to people's lives. It has gradually become an indispensable fuel for making fire and cooking in people's lives. For example, liquefied gas has gradually entered thousands of households.

[0003] At present, when using the existing liquefied gas (also known as liquefied natural gas), the user usually directly opens the valve on the liquefied gas, and then turns on the switch on the stove to ignite the gas. Before turning on the stove to ignite the gas, the user usually cannot tell whether the pipeline is ventilated, that is, it is not easy to distinguish the use status of the liquefied gas gas valve. In addition, when the existing liquefied gas gas valve is in use, if the user or a child accidentally touches the end cover at the upper end, the liquefied gas gas valve may be closed, affecting the use of the liquefied gas. The user needs to reopen the end cover to allow the gas to circulate again. Therefore, the existing liquefied gas gas valve still has certain technical defects in its design principle. Based on this, a liquefied gas gas valve that allows users to know whether the gas pipeline is ventilated has been developed. Summary of the invention

[0004] In order to enable users to easily and simply identify the usage status of a liquefied gas valve, the present application provides a liquefied gas valve. When the gas valve in the present application is in use, its lifting cover is raised, allowing users to easily and simply identify that the gas valve is in use, thereby reducing the risk of users accidentally touching the lifting cover on the gas valve and improving the user's usage experience.

[0005] The present application provides a liquefied gas valve, which adopts the following technical solution:

[0006] A liquefied gas valve, comprising:

[0007] The valve body has a gas passage and a blocking protrusion formed inside;

[0008] The valve cover is detachably connected and fixed to the valve body;

[0009] A push rod is inserted into the gas passage and is located at the gas inlet end of the valve body. A pulling groove is provided at the bottom of the rear end. A sealing ring is sleeved on the push rod for contacting with the blocking protrusion to block the gas passage.

[0010] The rotating shaft is detachably fixed inside the valve body;

[0011] The lever is rotatably connected to the rotating shaft, one end of which is formed with a pulling part arranged in the pulling groove for pulling the push rod, and the other end is a lifting part;

[0012] The diaphragm bracket is located in the valve body, and a through hole is opened at the bottom for the lifting part to pass through, and the top and bottom of the through hole are used to drive the lifting part to rotate;

[0013] The diaphragm is fixed between the valve cover and the valve body at the edge, and is sleeved on the diaphragm bracket in the middle;

[0014] The diaphragm pressing plate is sleeved on the diaphragm bracket and is used to fix the diaphragm with the diaphragm bracket;

[0015] The connecting rod is slidably connected to the valve cover, has a pulling protrusion formed on the top, and is fixedly connected to the diaphragm bracket at the bottom;

[0016] The first spring is sleeved on the connecting rod, and its two ends are respectively in contact with the diaphragm pressure plate and the valve cover;

[0017] A lifting cover is slidably connected to the connecting rod and is engaged with the pulling protrusion; and

[0018] The second spring is sleeved on the lifting cover, and its two ends are respectively in contact with the lifting cover and the valve cover.

[0019] Preferably, the width of the through hole is greater than the width of the lifting portion.

[0020] Preferably, an adjusting nut is threadedly connected to the valve cover, the connecting rod is passed through the adjusting nut, and the first spring and the second spring are both in contact with the adjusting nut.

[0021] Preferably, a valve seat is provided at the air inlet end of the gas channel of the valve body, a gas hole is opened at the rear end of the valve seat, a steel ball is provided in the valve seat, and the steel ball abuts against the inner wall of the valve seat to seal the gas hole.

[0022] Preferably, a valve plug is provided on one end of the push rod close to the valve seat.

[0023] Preferably, an air inlet nozzle is threadedly connected to the air inlet end of the valve body.

[0024] Preferably, a filter screen is provided inside the air inlet nozzle.

[0025] Preferably, an air intake sealing gasket is provided on the outer sleeve of the air intake end of the air intake nozzle.

[0026] Preferably, the air inlet nozzle is rotatably connected to a hand wheel for threaded connection with the air outlet end of the liquefied gas angle valve.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] 1. When the gas valve in the present application is in use, its lifting cover is raised, so that the user can easily recognize that the gas valve is in use, thereby reducing the risk of the user accidentally touching the lifting cover on the gas valve and improving the user's usage experience.

[0029] 2. After the use of the gas valve in the present application is completed, the gas stove can be turned off first, and then the liquefied gas angle valve can be closed. At this time, a part of the gas will remain in the gas pipeline, the gas pressure still exists, and the lifting cover is still in a pop-up state. When the gas is used next time, it can be observed whether the lifting cover is still in a pop-up state to determine whether there is a gas leak in the gas pipeline. If the lifting cover is still in a pop-up state, it means that there is no gas leak in the gas pipeline. If the lifting cover is not in a pop-up state, it means that the gas pressure in the gas pipeline is not enough to overcome the elastic force of the first spring, that is to say, the gas in the gas pipeline has leaked. At this time, the user can check the gas pipeline to reduce the risk of gas use. The structural setting plays a good prompting and warning role. The user can judge the gas usage status and whether the gas pipeline has leaks according to the status of the lifting cover, which greatly improves the safety of gas use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the liquefied gas valve in the embodiment of the present application.

[0031] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure in the AA direction (the liquefied gas valve is in a closed state at this time).

[0032] Figure 3 It is a schematic diagram of the connection structure of the push rod, lever, rotating shaft and connecting rod.

[0033] Figure 4 It is a structural diagram of the push rod, sealing ring and valve plug.

[0034] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure in the AA direction (the liquefied gas valve is in working state at this time).

[0035] Explanation of the reference numerals in the accompanying drawings: 11. valve body; 111. gas channel; 112. sealing protrusion; 12. valve cover; 121. adjusting nut; 13. push rod; 131. sealing ring; 132. pulling groove; 14. rotating shaft; 15. lever; 151. pulling part; 152. lifting part; 16. diaphragm bracket; 161. through hole; 17. diaphragm; 18. diaphragm pressure plate; 19. connecting rod; 191. pulling protrusion; 20. first spring; 21. lifting cover; 22. second spring; 23. valve seat; 24. steel ball; 25. valve plug; 26. air inlet nozzle; 27. filter screen; 28. air inlet sealing gasket; 29. ​​hand wheel. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings.

[0037] The front end mentioned in the present application is the side close to the gas inlet end, and the rear end is the side close to the gas outlet end.

[0038] The embodiment of the present application discloses a liquefied gas fuel valve.

[0039] Reference Figures 1 to 3 The liquefied gas valve includes a valve body 11, a valve cover 12, a push rod 13, a rotating shaft 14, a lever 15, a diaphragm bracket 16, a diaphragm 17, a diaphragm pressure plate 18, a connecting rod 19, a first spring 20, a lifting cover 21 and a second spring 22.

[0040] The valve body 11 is a casting, and a gas channel 111 and a blocking protrusion 112 are formed inside the valve body 11. The gas channel 111 is used for gas circulation, and the rear end of the blocking protrusion 112 in the valve body 11 is a valve cavity.

[0041] The valve cover 12 is detachably connected and fixedly mounted on the valve body 11 . Specifically, the valve cover 12 is fixedly mounted on the valve body 11 by bolt connection.

[0042] Reference Figures 1 to 3 The push rod 13 is inserted into the gas passage 111 of the valve body 11, and the push rod 13 is located at the air inlet side of the valve body 11. A pulling groove 132 is provided at the bottom of the rear end of the push rod 13, and a sealing ring 131 is sleeved on the push rod 13, wherein the sealing ring 131 is a flat gasket sealing ring. When in use, the push rod 13 can slide in the gas passage 111 of the valve body 11, and then the sealing ring 131 abuts against the blocking protrusion 112 to block the entire gas passage 111. The sealing flat gasket can effectively contact the sealing surface in the closed state, so that the closing sealing effect of the gas valve is better.

[0043] Both ends of the rotating shaft 14 are fixedly mounted inside the valve body 11 , and the rotating shaft 14 is perpendicular to the axis of the valve body 11 .

[0044] The middle part of the lever 15 is rotatably connected to the rotating shaft 14. The front end of the lever 15 is formed with a pulling part 151, and the rear end of the lever 15 is formed with a lifting part 152. The front part of the lever 15 is the gas inlet side, and the rear end of the lever 15 is the gas outlet side. The pulling part 151 is embedded in the pulling groove 132 on the push rod 13. The lever 15 can be rotated on the rotating shaft 14 so that the pulling part 151 drives the push rod 13 to slide back and forth in the gas channel 111.

[0045] Reference Figures 1 to 3The diaphragm support 16 is located inside the valve body 11, wherein a through hole 161 is provided at the bottom of the diaphragm support 16 for the lifting portion 152 to pass through, and the top and bottom of the through hole 161 can contact the lifting portion 152 of the lever 15, so that the diaphragm support 16 can drive the lifting portion 152 to move up and down to make the lever 15 rotate on the rotating shaft 14. The width between the upper and lower parts of the through hole 161 is greater than the width between the upper and lower parts of the lifting portion 152, so that the diaphragm support 16 can drive the lifting portion 152 of the lever 15 to move only after it moves up a certain distance.

[0046] The edge of the diaphragm 17 is located between the valve cover 12 and the valve body 11 , that is, the edge of the diaphragm 17 is pressed and fixed on the valve body 11 by the valve cover 12 , and the middle part of the diaphragm 17 is sleeved on the diaphragm bracket 16 .

[0047] The diaphragm pressing plate 18 is sleeved on the diaphragm bracket 16 , and the diaphragm pressing plate 18 presses and fixes the diaphragm 17 on the diaphragm bracket 16 , and a seal is formed between the diaphragm 17 , the diaphragm bracket 16 and the diaphragm pressing plate 18 .

[0048] Reference Figures 1 to 3 The bottom of the connecting rod 19 is fixedly connected to the diaphragm bracket 16, and the top of the valve cover 12 is threadedly connected with an adjusting nut 121, wherein the adjusting nut 121 can be a part of the valve cover 12, the connecting rod 19 is slidably connected to the adjusting nut 121, and a pulling protrusion 191 is formed on the top of the connecting rod 19.

[0049] The first spring 20 is sleeved on the connecting rod 19 , and the top and bottom of the first spring 20 are respectively in contact with the adjusting nut 121 and the diaphragm pressing plate 18 .

[0050] The middle part of the lifting cover 21 is slidably connected to the connecting rod 19, and the middle part of the lifting cover 21 can form a snap connection with the pulling protrusion 191 at the top of the connecting rod 19. The middle part of the lifting cover 21 can be lifted by driving the pulling protrusion 191 to move the connecting rod 19 upward. The outer cover of the lifting cover 21 is arranged at the edge of the top of the valve cover 12.

[0051] The second spring 22 is sleeved on the lifting cover 21 , and the top and bottom of the second spring 22 are respectively in contact with the top of the lifting cover 21 and the adjusting nut 121 .

[0052] Reference Figures 1 to 3 The liquefied gas valve also includes a valve seat 23, a steel ball 24, a valve plug 25, an air inlet nozzle 26, a filter screen 27, an air inlet sealing gasket 28 and a hand wheel 29.

[0053] The valve seat 23 is installed in the gas channel 111 of the valve body 11, and the valve seat 23 is located at the air inlet end of the gas channel 111. A gas hole is opened on the valve seat 23. The steel ball 24 is placed in the valve seat 23. The steel ball 24 can contact the rear end of the valve seat 23 to block the gas hole, thereby cutting off the gas flow.

[0054] Reference Figures 2 to 4 The valve plug 25 is located at the front end of the push rod 13, and the valve plug 25 is "convex". The push rod 13 is provided with a "concave" groove for installing the valve plug 25. The valve plug 25 is embedded in the "concave" groove on the push rod 13, which effectively prevents the valve plug 25 from falling off due to the contraction of the gas. When in use, the valve plug 25 can contact the valve seat 23.

[0055] Reference Figures 1 to 3 The air inlet nozzle 26 is threadedly installed at the air inlet end of the valve body 11 . The air inlet nozzle 26 is located on the side of the valve seat 23 away from the push rod 13 . The steel ball 24 is located between the air inlet nozzle 26 and the valve seat 23 .

[0056] The filter screen 27 is installed at the air inlet end of the air inlet nozzle 26, and the filter screen 27 is used to filter the liquefied gas.

[0057] Reference Figures 1 to 3 The air intake sealing gasket 28 is sleeved on the air intake end of the air intake nozzle 26, and the air intake sealing gasket 28 is used to seal between the air intake nozzle 26 and the air outlet end of the liquefied gas angle valve.

[0058] The hand wheel 29 is rotatably connected to the air inlet nozzle 26, and the hand wheel 29 is used for threaded connection with the air outlet end of the liquefied gas angle valve.

[0059] Reference Figure 2 and Figure 5 When in use, the gas enters the push rod 13 through the gas inlet nozzle 26, the valve seat 23, and the gas hole. Since the sealing ring 131 on the push rod 13 is in a sealed state with the blocking protrusion 112, the user needs to manually pull the lifting cover 21, and the lifting cover 21 drives the connecting rod 19 and the diaphragm bracket 16 to move upward together. After the diaphragm bracket 16 moves a certain distance, the diaphragm bracket 16 drives the lifting part 152 of the lever 15 to move, and then the lever 15 is rotated on the rotating shaft 14, so that the pulling part 151 pushes the push rod 13 to move forward in the gas channel 111, so that a channel is formed between the sealing ring 131 and the blocking protrusion 112, and then the gas enters the valve cavity of the valve body 11, and the gas pressure of the gas forms an upward pressure on the diaphragm 17 to balance the elastic force of the first spring 20, so that the gas circulates normally for user use.

[0060] When liquefied gas flows, the gas pressure is insufficient to overcome the elastic force of the first spring 20. Therefore, the diaphragm 17 and the diaphragm pressure plate 18 drive the diaphragm bracket 16 downward, and the diaphragm bracket 16 presses down the lifting portion 152 of the lever 15 to rotate the lever 15 on the rotating shaft 14. Then the pulling portion 151 pulls the push rod 13 to move backward in the gas channel 111, so that the sealing ring 131 on the push rod 13 abuts against the blocking protrusion 112 to seal the gas channel 111.

[0061] When using gas, the user has to pull the lifting part upwards to open the gas channel 111 inside the valve body 11, and the gas flows in the valve body 11. During normal use of the gas, due to the elastic force of the second spring 22 between the lifting cover 21 and the adjusting nut 121, the lifting cover 21 is always in a pop-up state. At this time, the user only needs to judge whether the gas is in normal use according to the state of the lifting cover 21.

[0062] And when turning off the gas, you can first turn off the gas stove and then close the liquefied gas angle valve. At this time, a part of the gas will remain in the gas pipeline, the gas pressure still exists, and the lifting cover 21 is still in a pop-up state. When the gas is used next time, you can observe whether the lifting cover 21 is still in a pop-up state to determine whether there is a gas leak in the gas pipeline. If the lifting cover 21 is still in a pop-up state, it means that there is no gas leak in the gas pipeline. If the lifting cover 21 is in a non-pop-up state, it means that the gas pressure in the gas pipeline is not enough to overcome the elastic force of the first spring 20, that is to say, the gas in the gas pipeline has leaked. At this time, the user can check the gas pipeline to reduce the risk of gas use. This structural setting plays a good prompting and warning role. The user can judge the gas usage status and whether the gas pipeline is leaking according to the state of the lifting cover 21, which greatly improves the safety of gas use.

[0063] 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 liquefied gas valve, characterized in that: include: The valve body has a gas passage and a blocking protrusion formed inside; The valve cover is detachably connected and fixed to the valve body; A push rod is inserted into the gas passage and is located at the gas inlet end of the valve body. A pulling groove is provided at the bottom of the rear end. A sealing ring is sleeved on the push rod for contacting with the blocking protrusion to block the gas passage. The rotating shaft is detachably fixed inside the valve body; The lever is rotatably connected to the rotating shaft, one end of which is formed with a pulling part arranged in the pulling groove for pulling the push rod, and the other end is a lifting part; The diaphragm bracket is located in the valve body, and a through hole is opened at the bottom for the lifting part to pass through, and the top and bottom of the through hole are used to drive the lifting part to rotate; The diaphragm is fixed between the valve cover and the valve body at the edge, and is sleeved on the diaphragm bracket in the middle; The diaphragm pressing plate is sleeved on the diaphragm bracket and is used to fix the diaphragm with the diaphragm bracket; The connecting rod is slidably connected to the valve cover, has a pulling protrusion formed on the top, and is fixedly connected to the diaphragm bracket at the bottom; The first spring is sleeved on the connecting rod, and its two ends are respectively in contact with the diaphragm pressure plate and the valve cover; A lifting cover is slidably connected to the connecting rod and is engaged with the pulling protrusion; and The second spring is sleeved on the lifting cover, and its two ends are respectively in contact with the lifting cover and the valve cover.

2. A liquefied gas valve according to claim 1, characterized in that: The width of the through hole is greater than the width of the raised portion.

3. A liquefied gas valve according to claim 1, characterized in that: An adjusting nut is threadedly connected to the valve cover, the connecting rod is passed through the adjusting nut, and the first spring and the second spring are both in contact with the adjusting nut.

4. A liquefied gas valve according to claim 1, characterized in that: A valve seat is provided at the air inlet end of the gas channel of the valve body, a gas hole is opened at the rear end of the valve seat, a steel ball is arranged in the valve seat, and the steel ball abuts against the inner wall of the valve seat to block the gas hole.

5. A liquefied gas valve according to claim 4, characterized in that: A valve plug is clamped on one end of the push rod close to the valve seat.

6. A liquefied gas valve according to claim 4, characterized in that: An air inlet nozzle is threadedly connected at the air inlet end of the valve body.

7. A liquefied gas valve according to claim 6, characterized in that: A filter screen is sleeved inside the air inlet nozzle.

8. A liquefied gas valve according to claim 7, characterized in that: An air intake sealing pad is sleeved outside the air intake end of the air intake nozzle.

9. A liquefied gas valve according to claim 6, characterized in that: The air inlet nozzle is rotatably connected with a hand wheel for threaded connection with the air outlet end of the liquefied gas angle valve.

Images