CN201396497Y - Valve device used for gas - Google Patents
Valve device used for gas Download PDFInfo
- Publication number
- CN201396497Y CN201396497Y CN2009200458029U CN200920045802U CN201396497Y CN 201396497 Y CN201396497 Y CN 201396497Y CN 2009200458029 U CN2009200458029 U CN 2009200458029U CN 200920045802 U CN200920045802 U CN 200920045802U CN 201396497 Y CN201396497 Y CN 201396497Y
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- Prior art keywords
- cone
- gas
- piston
- high pressure
- aperture
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- Expired - Fee Related
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Abstract
The utility model discloses a valve device used for gas, which relates to the technical field of pressure-reducing valve, and comprises a valve body, a high-pressure small air inlet hole and a piston.The center of the top part of the piston is provided with a round hole; a cone is arranged in the round hole; the bottom diameter of the cone is larger than the aperture of the high-pressure small air inlet hole; the top end of the cone can be stretched into the high-pressure small air inlet hole; the bottom part of the piston is connected with a spring. The valve device used for gas can steadilyadjust the input gas flow, thus leading the output flow to be stable and reliable and being capable of changing the cone head and prolonging the service life of the pressure-reducing valve.
Description
Technical field
The utility model relates to reduction valve.
Background technique
Gas pressure reducer is the throttling by open-shut device, and inlet gas pressure is reduced to the outlet pressure of a certain needs, and makes outlet pressure keep stable equipment.It is connected use with gas cylinder, at first pressurized gas are delivered to decompressor, and high pressure air reducing to the low-pressure gas of required force value, is controlled its gas output flow again.
Existing gas pressure reducer comprises valve body, is provided with the high pressure admission aperture in the valve body, opens and closes the high pressure admission aperture by piston, and gas has just entered low-pressure cavity after the high pressure admission aperture comes out.During use, when the pressurized gas promotion piston of turning right, piston is opened in a flash, and the flow area of high pressure admission aperture just increases severely to maximum, and it is maximum that flow also reaches.After low-pressure cavity reaches certain pressure, piston is pushed to the left side, close the valve port of high pressure admission aperture, at this moment flow reaches minimum.Such structure causes the instability of flow by the input of high pressure admission aperture, causes the instability of flow of output.
The model utility content
In order to address the above problem, the utility model provides a kind of gas control valve unit, and this gas can stable regulation for the gas flow of input with control valve unit, and then makes output flow reliable and stable, and can change nose cone, prolongs reduction valve working life.
The utility model adopts following technological scheme, a kind of gas control valve unit, comprise valve body, high pressure admission aperture, piston, the top center position of described piston is provided with a circular hole, be provided with cone in the circular hole, the footpath, the end of cone is greater than the high pressure admission small aperture, and described cone top can be stretched in the high pressure admission aperture, and the bottom of piston is connected with spring.
The beneficial effects of the utility model are, owing to adopt said structure, this reduction valve can stable regulation for the gas flow of input, and then makes output flow reliable and stable, and can change nose cone, prolong reduction valve working life.
Description of drawings
Fig. 1 is the structural representation of gas of the present utility model with control valve unit.
Embodiment
As shown in Figure 1, a kind of gas control valve unit, comprise valve body 1, high pressure admission aperture 2, piston 3, the top center position of described piston 3 is provided with a circular hole 6, be provided with cone 4 in the circular hole 6, the footpath, the end of cone 4 is greater than high pressure admission aperture 2 apertures, and described cone 4 tops can be stretched in the high pressure admission aperture 2, and the bottom of piston 3 is connected with spring 5.Circular hole 6 and cone 4 flexibly connect by screw thread, in the use, after cone 4 has worn and torn, can change cone 4, prolong reduction valve working life.Cone 4 can move forward and backward to regulate air-flow air inlet area along the little axially bored line of high pressure admission with piston 3.Footpath, the end of oval cone 4 is greater than the high pressure admission small aperture, so the sealing of high pressure admission aperture gas channel relies on fully between cone and the high pressure admission aperture inwall and realizes.Because the bottom of piston 3 is connected with spring 5, spring 5 can promote piston 3 and close the high pressure admission aperture, by the elastic force of Regulation spring 5, can regulate the minimum cracking pressure of high pressure admission aperture, promptly regulates the minimum suction pressure of hyperbaric chamber.Relative prior art, cone end socket of the present utility model is in the process of moving forward and backward, the circulation area of gas is not to become maximum by minimum suddenly, but gradually change, relative discharge also is and gradually changes, help the stable input of gas like this, thereby make the flow of output also reach stable.
Claims (1)
1, a kind of gas control valve unit, comprise valve body (1), high pressure admission aperture (2), piston (3), it is characterized in that: the top center position of described piston (3) is provided with a circular hole (6), be provided with cone (4) in the circular hole (6), the footpath, the end of cone (4) is greater than high pressure admission aperture (2) aperture, described cone (4) top can be stretched in the high pressure admission aperture (2), and the bottom of piston (3) is connected with spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200458029U CN201396497Y (en) | 2009-05-02 | 2009-05-02 | Valve device used for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200458029U CN201396497Y (en) | 2009-05-02 | 2009-05-02 | Valve device used for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396497Y true CN201396497Y (en) | 2010-02-03 |
Family
ID=41619006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200458029U Expired - Fee Related CN201396497Y (en) | 2009-05-02 | 2009-05-02 | Valve device used for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396497Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401161A (en) * | 2010-09-13 | 2012-04-04 | 徐国耀 | Valve capable of preventing forcible pumping |
| CN110006584A (en) * | 2019-04-11 | 2019-07-12 | 西安培华学院 | A kind of high-temperature-resistance pressure sensor |
-
2009
- 2009-05-02 CN CN2009200458029U patent/CN201396497Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401161A (en) * | 2010-09-13 | 2012-04-04 | 徐国耀 | Valve capable of preventing forcible pumping |
| CN110006584A (en) * | 2019-04-11 | 2019-07-12 | 西安培华学院 | A kind of high-temperature-resistance pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20100502 |