CN212840707U - Container valve with built-in pressure stabilizer - Google Patents
Container valve with built-in pressure stabilizer Download PDFInfo
- Publication number
- CN212840707U CN212840707U CN202020516713.4U CN202020516713U CN212840707U CN 212840707 U CN212840707 U CN 212840707U CN 202020516713 U CN202020516713 U CN 202020516713U CN 212840707 U CN212840707 U CN 212840707U
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- Prior art keywords
- piston rod
- piston
- valve
- cavity
- outlet channel
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to a container valve with a built-in pressure stabilizer, which comprises a valve body with a cavity and a pressing cap, wherein the lower end of the valve body is connected with a container and the cavity is penetrated through from top to bottom, the pressing cap is connected with the upper end of the valve body in a sealing way, the upper end of the pressing cap is provided with a power air inlet, and one side of the valve body is provided with an air outlet channel communicated with the cavity; a piston rod with the upper end extending into the pressing cap is arranged in the cavity, a piston hermetically matched with the inner side wall of the pressing cap is arranged at the upper end of the piston rod, a first air chamber communicated with the power air inlet is formed at the upper side of the piston, a second air chamber communicated with the air outlet channel is formed at the lower side of the piston, a compression spring with two ends respectively abutted against the piston rod and the valve body is sleeved on the periphery of the piston rod, and the piston is driven to move up and down by the resultant force of the first air chamber, the; the inner wall of the cavity is provided with a convex ring below the air outlet channel, and the lower end of the piston rod is provided with a sealing component which can be separated from the convex ring when the piston rod moves downwards and can be sealed and abutted against the convex ring when the piston rod moves upwards. The container valve is easy to control and has good safety.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to built-in pressure stabilizer's container valve.
Background
The container valve is a device for reducing the pressure of the high-pressure gas in the container and then outputting the reduced pressure gas, such as a fire extinguishing agent in a bottle body of a fire extinguisher, that is, a container valve arranged at the upper end of the bottle body is used for reducing the pressure and then outputting the reduced pressure gas to extinguish a fire. Most prior art container valves employ a knife top to pierce a vent membrane assembly to depressurize and vent the high pressure gas from the container, as shown in fig. 1. However, the existing container valve has some disadvantages, for example, after the vent membrane assembly is punctured, the gas in the bottle body can be continuously discharged outwards, and cannot be turned off, which is easy to cause waste; when the container valve outwards discharges gas, high-pressure gas easily causes the damage risk to valve downstream spare part, personnel etc. when flowing to the pipeline through the container valve, and the safety in utilization is not high, if install pressure relief device again at the valve exit, makes its volume and cost all increase among the intangible.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a built-in pressure stabilizer's that the leakproofness is good, can turn off when gas discharges and can invariably decompress when opening holds the pneumatic valve.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a container valve with a built-in pressure stabilizer is characterized in that: the pressure cap is connected with the upper end of the valve body in a sealing way, a power air inlet is arranged at the upper end of the pressure cap, and an air outlet channel communicated with the cavity is arranged at one side of the valve body;
a piston rod with the upper end extending into the pressing cap is arranged in the cavity, a piston hermetically matched with the inner side wall of the pressing cap is arranged at the upper end of the piston rod, a first air chamber communicated with the power air inlet is formed at the upper side of the piston, a second air chamber communicated with the air outlet channel is formed at the lower side of the piston, a compression spring with two ends respectively abutted against the piston rod and the valve body is sleeved on the periphery of the piston rod, and the piston is driven to move up and down by the resultant force of the first air chamber, the second air chamber and the compression;
the inner wall of the cavity is provided with a convex ring below the air outlet channel, and the lower end of the piston rod is provided with a sealing component which can be separated from the convex ring when the piston rod moves downwards and can be sealed and abutted against the convex ring when the piston rod moves upwards.
Further, the sealing assembly comprises a sealing ring sleeved at the lower end of the piston rod, a boss is arranged on the periphery of the lower end of the piston rod, a flow guide nut is connected to the end portion of the lower end of the piston rod in a threaded mode, and the sealing ring is embedded and fixed between the boss and the flow guide nut.
Furthermore, a first limiting table is arranged on the inner wall of the cavity, and a limiting ring which can abut against the first limiting table to limit the downward moving distance of the piston rod is arranged on the piston rod.
Furthermore, a gasket is arranged on the first limiting table.
Furthermore, a second limiting table is arranged below the first limiting table on the inner wall of the cavity, the upper end of the compression spring abuts against the limiting ring, and the lower end of the compression spring abuts against the second limiting table.
Furthermore, be equipped with the first straight hole of lower extreme confined in the piston rod, be equipped with the second straight hole on the spacing ring, the hypomere of first straight hole lateral wall is equipped with at least one row of first aperture that is used for communicateing first straight hole and gas outlet passageway, first straight hole lateral wall is provided with at least one row of second aperture that is used for communicateing second straight hole and first straight hole near spacing ring downside position.
Furthermore, an O-shaped sealing ring is embedded in the periphery of the piston.
Compared with the prior art, the utility model has the advantages of it is following: when the container valve inputs gas to the power gas inlet, the pressure of the first gas chamber is greater than the sum of the pressure of the second gas chamber and the elastic force of the compression spring, the piston and the piston rod are pushed to move downwards, the sealing ring and the convex ring are separated to form a valve for gas to pass through, the gas in the container is discharged from the gas outlet channel, the second gas chamber is communicated with the gas outlet channel, when the pressure of the gas outlet channel is increased to a certain value, the sum of the pressure of the second gas chamber and the elastic force of the compression spring is greater than the pressure of the first gas chamber, the piston and the piston rod move upwards, the sealing ring and the convex ring are abutted to shut the valve, the pressure of the gas outlet channel is gradually reduced, when the pressure of the gas outlet channel is reduced to a certain value, the piston and the piston rod move downwards again to discharge the gas in the container from the gas outlet channel, the reciprocating is carried out, and in the exhausting process, the pressure in the The range of (2) increases the use safety, and simultaneously, when stopping inputting gas to the power air inlet, the gas in the container can not be discharged from the air outlet channel, and can be continuously used next time, thereby reducing the waste.
Drawings
FIG. 1 is a schematic diagram of a prior art container valve;
fig. 2 is a schematic view of a container valve according to the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the terms of orientation and positional relationship indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of protection of the present invention.
FIG. 1 is a schematic diagram of a prior art reservoir valve including a vent diaphragm assembly 101, a piston 102, a pressure cap 103, an O-ring 104, a gasket 105, a spring 106, an O-ring 107, a gas passage 108, a sealing ring 109, a deflector nut 110, a low-pressure and high-pressure seal valve 111, a gas chamber 112, a gas outlet passage 113, a valve body 114, and a gas inlet passage 115; the piston 102 is assembled in the valve body 114, the piston 102 is provided with O- shaped sealing rings 104 and 107, the piston 102 is in sealing contact with the valve body 114 and can move up and down in an inner hole of the valve body 06, the lower end of the piston 102 is provided with a sealing ring 109, and the sealing ring 109 is tightly pressed on the piston 102 by a guide nut 010 through threads; the sealing ring 109 and the inner hole of the valve body 014 form a valve; the vent membrane assembly 01 is mounted within the upper bore of piston 102. The upper end of the valve body 114 is provided with a pressure cap 103, the pressure cap 103 is provided with a pilot valve of a driving device, the side surface is provided with a low-pressure-release high-pressure-seal valve 111, and an air chamber 112 is arranged between the pressure cap 103 and the piston 102. The working principle of the container valve is as follows: the air inlet channel 115 is connected to a container such as a bottle of fire extinguishing agent, and the air outlet channel 113 is connected to a delivery line. The valve is normally closed by the force of the spring 106; when a fire occurs, after the pilot valve 117 receives a command from the system, the top knife 116 is pressed downwards, the top knife 116 pierces the diaphragm of the bleeding diaphragm assembly 101, and the high-pressure gas in the fire extinguishing agent container flows from the gas inlet channel 115 to the gas chamber 112 through the gas channel 108 and the bleeding diaphragm assembly 101, so that the gas pressure in the gas chamber 112 rises, the piston 102 is pressed downwards, the valve is opened, and the high-pressure gas flows from the gas inlet channel 115 to the gas outlet channel 113 through the valve.
In the container valve in the prior art, after the vent membrane assembly 101 is punctured, gas in the bottle body is continuously discharged outwards and cannot be turned off, so that waste is easily caused; and when the container valve outwards discharged gas, when high-pressure gas flowed to the pipeline through the container valve, pressure was difficult to control, easily caused damage risk to valve low reaches spare part, personnel etc. and the safety in utilization is not high, if install pressure relief device again at valve exit, made its volume and cost all increase among the intangible.
In view of these deficiencies of the prior art container valves, the present application proposes an improved container valve.
Referring to fig. 2, which is a schematic structural view of a container valve of the present application, as shown in the figure, the container valve includes a valve body 212 having a lower end connected to a container (such as a bottle body of a fire extinguisher, not shown) and having a cavity 216 extending vertically therethrough, and a press cap 201 connected to an upper end of the valve body 212 in a sealing manner, wherein a power inlet 214 is formed at an upper end of the press cap 201, and an outlet passage 211 communicating with the cavity 216 is formed at one side of the valve body 212; a piston rod 204 with the upper end extending into the pressure cap 201 is arranged in the cavity 216, a piston 210 which is in close fit with the inner side wall of the pressure cap 201 is arranged at the upper end of the piston rod 204, a first air chamber 202 communicated with the power air inlet 214 is formed at the upper side of the piston 210, a second air chamber 203 communicated with the air outlet channel 211 is formed at the lower side of the piston 210, a compression spring 206 with two ends respectively abutted against the piston rod 204 and the valve body 212 is sleeved on the periphery of the piston rod 204, and the piston 210 is driven to move up and down by the resultant force of the first air chamber 202, the second air chamber 203 and; a convex ring 217 is arranged on the inner wall of the cavity 216 below the air outlet channel 211, and a sealing component which can be separated from the convex ring 217 when the piston rod 212 moves downwards and can be sealed and abutted against the convex ring 217 when the piston rod 212 moves upwards is arranged at the lower end of the piston rod 212.
Specifically, the sealing assembly comprises a sealing ring 207 sleeved at the lower end of the piston rod 212, a boss 218 is arranged on the periphery of the lower end of the piston rod 212, a flow guide nut 208 is connected to the end portion of the lower end of the piston rod 212 in a threaded manner, and the sealing ring 207 is fixedly embedded between the boss 218 and the flow guide nut 208.
When in use, gas is input into the first gas chamber 202 through the power inlet 214, the pressure of the first gas chamber 202 is greater than the sum of the pressure of the second gas chamber 203 and the elastic force of the compression spring 206 (the gravity of the valve body is ignored when discussing here), the piston 210 and the piston rod 204 move downwards, the sealing ring 207 is separated from the convex ring 218 to form a valve for gas to pass through, the gas in the container enters the gas outlet channel 211 from the valve to be discharged to a subsequent pipeline, because the second gas chamber 203 is communicated with the gas outlet channel 211, when the pressure of the gas outlet channel 211 is increased to a certain value, the sum of the pressure of the second gas chamber 203 and the elastic force of the compression spring 206 is greater than the pressure of the first gas chamber 202, the piston 210 and the piston rod 204 move upwards, so that the sealing ring 207 abuts against the convex ring 218 to close the valve, and further, the pressure of the gas outlet channel 211, the piston 210 and the piston rod 204 move downwards again to enable the gas in the container to be exhausted from the gas outlet channel 211, and the reciprocating is carried out, so that the gas in the container is exhausted. In the exhaust process, the pressure in the air outlet channel 211 is always stabilized in a certain range under the action of the piston 210, the first air chamber 202, the second air chamber 203, the compression spring 6 and other components, namely, a pressure stabilizing device in the container valve is formed, and therefore the safety of the container valve is greatly improved.
In this embodiment, in order to prevent the piston rod 204 from moving down excessively, the inner wall of the cavity 216 is provided with a first limit stop 219, the piston rod 204 is provided with a limit ring 215 which can abut against the first limit stop 219 to limit the downward movement distance of the piston rod 204, and the first limit stop 219 is provided with a washer 205 in order to prevent the first limit stop 219 from rigidly colliding with the limit ring 215.
In this embodiment, a second limit table 220 is disposed below the first limit table 219 on the inner wall of the cavity 216, and the upper end of the compression spring 206 abuts against the limit ring 215 and the lower end abuts against the second limit table 220.
In this embodiment, a first straight hole 221 with a closed lower end is formed in the piston rod 204, a second straight hole 222 is formed in the limit ring 215, at least one row of first small holes 223 used for communicating the first straight hole 221 with the air outlet channel 211 is formed in a lower section of a side wall of the first straight hole 221, and at least one row of second small holes 224 used for communicating the second straight hole 222 with the first straight hole 221 are formed in a position, close to the lower side of the limit ring 215, of the side wall of the first straight hole 221, so that air flow between the second air chamber 203 and the air outlet channel 211 can be smoother.
In this embodiment, an O-ring 209 is embedded on the outer periphery of the piston 210 to improve the sealing performance.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A container valve with a built-in pressure stabilizer is characterized in that: the pressure cap is connected with the upper end of the valve body in a sealing way, a power air inlet is arranged at the upper end of the pressure cap, and an air outlet channel communicated with the cavity is arranged at one side of the valve body;
a piston rod with the upper end extending into the pressing cap is arranged in the cavity, a piston hermetically matched with the inner side wall of the pressing cap is arranged at the upper end of the piston rod, a first air chamber communicated with the power air inlet is formed at the upper side of the piston, a second air chamber communicated with the air outlet channel is formed at the lower side of the piston, a compression spring with two ends respectively abutted against the piston rod and the valve body is sleeved on the periphery of the piston rod, and the piston is driven to move up and down by the resultant force of the first air chamber, the second air chamber and the compression;
the inner wall of the cavity is provided with a convex ring below the air outlet channel, and the lower end of the piston rod is provided with a sealing component which can be separated from the convex ring when the piston rod moves downwards and can be sealed and abutted against the convex ring when the piston rod moves upwards.
2. The container valve of claim 1, wherein: the sealing assembly comprises a sealing ring sleeved at the lower end of the piston rod, a boss is arranged on the periphery of the lower end of the piston rod, a flow guide nut is connected to the end part of the lower end of the piston rod in a threaded manner, and the sealing ring is embedded and fixed between the boss and the flow guide nut.
3. The container valve of claim 2, wherein: the piston rod is provided with a first limiting platform, and the piston rod is provided with a limiting ring which can abut against the first limiting platform to limit the downward moving distance of the piston rod.
4. A container valve as defined in claim 3, wherein: and a gasket is arranged on the first limiting table.
5. A container valve as defined in claim 3, wherein: the cavity inner wall is provided with a second limit platform below the first limit platform, the upper end of the compression spring is abutted against the limit ring, and the lower end of the compression spring is abutted against the second limit platform.
6. The container valve of claim 5, wherein: the piston rod is provided with a first straight hole with a closed lower end, the limiting ring is provided with a second straight hole, the lower section of the side wall of the first straight hole is provided with at least one row of first small holes used for communicating the first straight hole with the gas outlet channel, and the side wall of the first straight hole is provided with at least one row of second small holes used for communicating the second straight hole with the first straight hole at the position close to the lower side of the limiting ring.
7. The container valve of claim 1, wherein: and an O-shaped sealing ring is embedded in the periphery of the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020516713.4U CN212840707U (en) | 2020-04-09 | 2020-04-09 | Container valve with built-in pressure stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020516713.4U CN212840707U (en) | 2020-04-09 | 2020-04-09 | Container valve with built-in pressure stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212840707U true CN212840707U (en) | 2021-03-30 |
Family
ID=75151439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020516713.4U Expired - Fee Related CN212840707U (en) | 2020-04-09 | 2020-04-09 | Container valve with built-in pressure stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212840707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681530A (en) * | 2022-12-28 | 2023-02-03 | 济南华信流体控制有限公司 | Pneumatic type fast-assembling valve |
-
2020
- 2020-04-09 CN CN202020516713.4U patent/CN212840707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115681530A (en) * | 2022-12-28 | 2023-02-03 | 济南华信流体控制有限公司 | Pneumatic type fast-assembling valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |