CN2670709Y - Regulatable pressure stabilizing valves - Google Patents
Regulatable pressure stabilizing valves Download PDFInfo
- Publication number
- CN2670709Y CN2670709Y CNU2003201228332U CN200320122833U CN2670709Y CN 2670709 Y CN2670709 Y CN 2670709Y CN U2003201228332 U CNU2003201228332 U CN U2003201228332U CN 200320122833 U CN200320122833 U CN 200320122833U CN 2670709 Y CN2670709 Y CN 2670709Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- air
- spring
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an adjustable pressure stabilizing valve which is composed of an upper valve body, an adjusting screw, a hollow cavity, an upper spring, a strain diaphragm, a lower valve body, an air chamber, an air inlet, a valve pin, an air gate, a lower spring and an air outlet, wherein, the strain diaphragm is clamped between the upper valve body and the lower valve body, the hollow cavity is formed on the strain diaphragm, and the air chamber is formed under the strain diaphragm; the top surface of the upper valve body is provided with the adjusting screw, and the upper spring is arranged in the hollow cavity; the bottom surface of the lower valve body is provided with the air inlet, and the valve pin, the air gate and the lower spring are arranged in the air inlet; the side surface of the lower valve body is provided with the air outlet, a nylon cloth is clamped in the strain diaphragm, and the center of the nylon cloth is provided with a circular sheet. The adjustable pressure stabilizing valve which is applied to a gas pipeline of a gas chromatograph has the advantages of compact structure and favorable reliability.
Description
Technical field
The utility model relates to gas chromatograph, particularly a kind of adjustable pressure maintaining valve.
Background technique
Gas chromatograph is a kind of instrument that sample is measured by the carrier gas input, therefore in the instrument many pipelines and valve are arranged, especially the valve of various uses, of a great variety, complex structure, as a kind of adjustable pressure maintaining valve that can keep gas pressure in the pipeline etc., so that instrument is bulky, operation inconvenience is safeguarded loaded down with trivial details.
Summary of the invention
The utility model is big for the volume that solves existing gas circuit valve, the existing technical problem of poor reliability, and provides a kind of structure small and exquisite adjustable pressure maintaining valve.
According to above-mentioned purpose, the utility model provides a kind of adjustable pressure maintaining valve, is made of upper valve body, adjusting screw, cavity, upper spring, strain membrane, following valve body, air cavity, suction port, valve pin, valve, lower spring, air outlet; Wherein clamp strain membrane between upper valve body and the following valve body, and formed cavity in the above, formed air cavity below; Wherein the upper valve body end face is equipped with adjusting screw, and upper spring is arranged in the cavity; Wherein descend the valve body bottom surface that suction port is arranged, valve pin, valve, lower spring are arranged in the suction port, there is the air outlet side; Wherein accompany nylon cloth in the strain membrane, there is disk in central authorities.
The utility model has been owing to taked above technical measures, has that structure is small and exquisite, the advantage of good reliability, thereby makes instrument weight reduction, the reduced volume of application.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
As shown in drawings, a kind of adjustable pressure maintaining valve is made of upper valve body 1, adjusting screw 2, cavity 3, upper spring 4, strain membrane 5, following valve body 6, air cavity 7, suction port 8, valve pin 9, valve 10, lower spring 11, air outlet 12; Wherein clamp strain membrane 5 between upper valve body 1 and the following valve body 6, and formed cavity 3 in the above, formed air cavity 7 below; Wherein upper valve body 1 end face is equipped with adjusting screw 2, and upper spring 4 is arranged in the cavity 3; Wherein descend valve body 6 bottom surfaces that suction port 8 is arranged, valve pin 9, valve 10, lower spring 11 are arranged in the suction port 8, there is air outlet 12 side; Wherein accompany nylon cloth 13 in the strain membrane 5, there is disk 14 in central authorities.During assembling, design is connected with pipeline according to gas circuit with suction port 8, air outlet 12, and wherein another air outlet 12 is connected with the pressure indicating meter, to monitor variation of gas pressure situation in the pipeline.The pressure of 4 pairs of strain membrane 5 of adjusting screw 2 can regulate upper springs, the gas pressure intensities in the promptly relative air cavity 7 are adjusted to the setting pressure of gas circuit, and the elastic force of lower spring 11 is by the elastic force design and installation of setting pressure.
When raising as gas pressure intensity in the pipeline, over-pressure gas promotes strain membrane 5 risings in the air cavity 7, disk 14 rises simultaneously, make with its valve pin that touches mutually 9 and under the elastic force effect of spring 11, also rise, and valve 10 is closed, along with over-pressure gas in the air cavity 7 12 flow out from the air outlet, make in the pipeline gas get back to setting pressure.When descending as gas pressure intensity in the pipeline, the elastic force of upper spring 4 promotes strain membrane 5 and descends, disk 14 descends simultaneously, make to drive and descend with its valve pin that touches mutually 9, and valve 10 is opened, and compressing lower spring 11 enlarges along with gas flows in the air cavity 7 increase valve 10, strain membrane 5 rises, valve pin 9 also rises under the elastic force effect of spring 11 like this, and valve 10 is closed.So go round and begin again, set on the pressure thereby ducted gas is remained on.
Wherein the strain membrane of being made by the silicone rubber thin slice 5 is critical components, if thickness is too thick, and poor sensitivity then, strain is slow, and voltage regulation result is little; If thickness is too thin, then fastness is not enough, and is yielding even broken, causes gas path failure.Existing adjustable pressure maintaining valve adopts thicker strain membrane, improve its sensitivity, only adds atmosphere chamber, so volume is bigger.And accompany nylon cloth in the strain membrane of the present utility model, strengthened the intensity of silicone rubber thin slice, so volume can be done very for a short time.
Claims (1)
1. an adjustable pressure maintaining valve is characterized in that: be made of upper valve body (1), adjusting screw (2), cavity (3), upper spring (4), strain membrane (5), following valve body (6), air cavity (7), suction port (8), valve pin (9), valve (10), lower spring (11), air outlet (12); Wherein clamp strain membrane (5) between upper valve body (1) and the following valve body (6), and formed cavity (3) in the above, formed air cavity (7) below; Wherein upper valve body (1) end face is equipped with adjusting screw (2), and upper spring (4) is arranged in the cavity (3); Wherein descend valve body (6) bottom surface that suction port (8) is arranged, valve pin (9), valve (10), lower spring (11) are arranged in the suction port (8), there is air outlet (12) side; Wherein accompany nylon cloth (13) in the strain membrane (5), there is disk (14) in central authorities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201228332U CN2670709Y (en) | 2003-12-25 | 2003-12-25 | Regulatable pressure stabilizing valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201228332U CN2670709Y (en) | 2003-12-25 | 2003-12-25 | Regulatable pressure stabilizing valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2670709Y true CN2670709Y (en) | 2005-01-12 |
Family
ID=34476308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201228332U Expired - Fee Related CN2670709Y (en) | 2003-12-25 | 2003-12-25 | Regulatable pressure stabilizing valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2670709Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022572A (en) * | 2010-12-22 | 2011-04-20 | 芜湖盛力制动有限责任公司 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
| US9163786B2 (en) | 2012-11-09 | 2015-10-20 | Industrial Technology Research Institute | Energy capturing system and pressure stabilizing device thereof |
-
2003
- 2003-12-25 CN CNU2003201228332U patent/CN2670709Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022572A (en) * | 2010-12-22 | 2011-04-20 | 芜湖盛力制动有限责任公司 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
| CN102022572B (en) * | 2010-12-22 | 2012-07-04 | 芜湖盛力制动有限责任公司 | Pressure limiting valve of vehicle or engineering machine air pressure regulating system |
| US9163786B2 (en) | 2012-11-09 | 2015-10-20 | Industrial Technology Research Institute | Energy capturing system and pressure stabilizing device thereof |
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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: 20050112 Termination date: 20100125 |