CN201448471U - Pressure relief valve - Google Patents
Pressure relief valve Download PDFInfo
- Publication number
- CN201448471U CN201448471U CN2009200472524U CN200920047252U CN201448471U CN 201448471 U CN201448471 U CN 201448471U CN 2009200472524 U CN2009200472524 U CN 2009200472524U CN 200920047252 U CN200920047252 U CN 200920047252U CN 201448471 U CN201448471 U CN 201448471U
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- CN
- China
- Prior art keywords
- valve
- adjusting screw
- adjusting
- adjusting bolt
- rod
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- Expired - Lifetime
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Abstract
The utility model relates to a pressure relief valve, in particular to a liquid and gas pressure relief device. The pressure relief valve is particularly applied in reducing pressure of liquid and gas. The pressure relief valve comprises a valve body, a valve upper cover, a valve lower cover, a pressure meter, a sealing pad, a valve rod, a membrane pad, a balance spring, an adjusting spring, an adjusting bolt, an adjusting threaded sleeve, a packing washer and an adjusting cap, wherein the valve body is provided with a high pressure gas and liquid outlet and a low pressure gas and liquid outlet, the valve upper cover is installed on the upper portion of the valve body, the pressure meter is installed on the valve upper cover, a valve rod sleeve is arranged on the valve body, the valve rod is installed in the sleeve, the packing washer is installed on the upper portion of the valve rod, a ring-shaped high pressure gas and liquid outlet is arranged in the valve body, a membrane pad is installed on the lower portion of the valve rod, the balance spring is sleeved on the valve rod between the membrane pad and the valve rod sleeve, an adjusting threaded sleeve installation hollow cavity is arranged in the valve lower cover, the adjusting threaded sleeve is sleeved in the adjusting threaded sleeve installation hollow cavity, the adjusting bolt is installed in the adjusting threaded sleeve installation hollow cavity, the adjusting spring is sleeved on the adjusting bolt, and the adjusting cap is installed on the end portion of the adjusting bolt on the outer end of the lower cover.
Description
Technical field
What the utility model reduction valve related to is a kind of liquid, Gas pressure reducer, is specially adapted to liquid, gas decompression.
Background technique
At present, liquid, gas pressure reducer high voltage terminal export in the side of piston rod, make sealing gasket discontinuity on the piston rod, cause shutoff, gas, liquid high-pressure outlet are unreliable, in addition, barrier film and outside directly communicate, in case the barrier film breakage then causes gas, leak of liquid.
Summary of the invention
The purpose of this utility model is to provide a kind of reduction valve at above-mentioned deficiency, and the high-pressure outlet of reduction valve is along the valve rod annular distribution, makes the sealing gasket on the valve rod stressed evenly, and shutoff gas, liquid high-pressure outlet are reliable, and effect of easing stress is good; In the adjusting screw rod bottom seal ring is housed, makes between barrier film and the valve body lower cover to keep sealing state,, improved Security in case the barrier film breakage can not cause gas, leak of liquid.
Reduction valve takes following technological scheme to realize: reduction valve comprises valve body, valve upper cover, valve lower cover, pressure gauge, sealing gasket, valve rod, barrier film pad, balance spring, Regulation spring, adjusting screw rod, Adjusting bolt Adjusting screw, seal ring and adjusting cap.
Valve body one side is provided with high pressure air, liquid import, and opposite side is provided with low pressure gas, liquid outlet, on valve body top valve upper cover is housed, and pressure gauge is housed on the valve upper cover, and pressure gauge adopts commercially available pressure gauge.Be provided with stem sleeve in valve body, valve rod is installed in the sleeve, at valve rod top dress sealing gasket.Be provided with ring-type high pressure air, liquid outlet in valve body, ring-type high pressure air, liquid outlet are distributed in the stem sleeve outside along valve rod top ring-type.In stem lower portion the barrier film pad is housed, the barrier film pad is installed between valve body and the valve lower cover, and valve rod adopts nut and packing ring to be fixed on the barrier film pad.Be set with balance spring on the valve rod between barrier film pad and the stem sleeve.
In the valve lower cover, be provided with Adjusting bolt Adjusting screw cavity is installed, in installing cavity, Adjusting bolt Adjusting screw is provided with the Adjusting bolt Adjusting screw positioning boss, Adjusting bolt Adjusting screw is sleeved on Adjusting bolt Adjusting screw and installs in the cavity, the Adjusting bolt Adjusting screw periphery is provided with groove, match with the Adjusting bolt Adjusting screw positioning boss, in the Adjusting bolt Adjusting screw installation cavity, adjusting screw rod is housed, adjusting screw rod matches with Adjusting bolt Adjusting screw, be set with Regulation spring on the adjusting screw rod between Adjusting bolt Adjusting screw and the barrier film pad, between adjusting screw rod lower end and the lower cover seal ring is housed, the adjusting cap is housed in the adjusting screw rod end of lower cover outer end.
Working principle: gas, liquid enters by high-pressure inlet, by ring-type gas, the liquid outlet is flowed out, enter body cavity, body cavity pressure withstands the barrier film pad, barrier film pad pulling valve rod moves downward, because barrier film pad area is than ring-type gas, the area of liquid outlet is big, therefore, gas in the valve chamber, hydraulic coupling is little than the ring-type outlet pressure, otherwise, because of bearing pressure, the barrier film pad valve rod is moved downward than senior general, sealing gasket will be blocked high-pressure outlet, so that body cavity gas, the gas of hydraulic coupling decline in the valve body cavity, hydraulic pressure multiply by diaphragm area by force and is slightly less than gas, pendular ring shape back pressure multiply by the ring-type discharge area, makes and brings about the desired sensation, liquid could be normally from gas, the liquid outlet is flowed out.
When rotation adjusting screw rod Adjusting bolt Adjusting screw upper and lower motion, compress or loosen Regulation spring, push or loosen compressing barrier film pad, inlet, outlet, hydraulic coupling ratio are reduced or increase so that regulate the decompression ratio.
When membrane ruptures, because of seal ring being housed, so gas, liquid that can not seepage in the screw rod bottom.
The ring-type gas of reduction valve, liquid outlet pressure can directly show from pressure gauge.
The utility model relief valves designs is reasonable, and compact structure because the high-pressure outlet of reduction valve is arranged to ring-type gas, liquid export along valve rod top annular distribution, makes the sealing gasket on the valve rod stressed even, and shutoff gas, liquid high-pressure outlet are reliable, and effect of easing stress is good; In the adjusting screw rod bottom seal ring is housed, makes between barrier film and the valve body lower cover to keep sealing state,, improved Security, reliability in case the barrier film breakage can not cause gas, leak of liquid.Reduction valve is specially adapted to liquid, gas decompression.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is the structure of relief pressure valve schematic representation.
Fig. 2 is a reduction valve A-A sectional view.
Embodiment
With reference to accompanying drawing 1～2, reduction valve comprises valve body 3, valve upper cover 2, valve lower cover 17, pressure gauge 1, sealing gasket 4, valve rod 6, barrier film pad 11, balance spring 10, Regulation spring 13, adjusting screw rod 14, Adjusting bolt Adjusting screw 16, seal ring 18 and regulates cap 20.
In valve lower cover 17, be provided with Adjusting bolt Adjusting screw cavity 15 is installed, in installing cavity 15, Adjusting bolt Adjusting screw is provided with Adjusting bolt Adjusting screw positioning boss 21, Adjusting bolt Adjusting screw 16 is sleeved on Adjusting bolt Adjusting screw and installs in the cavity 15, Adjusting bolt Adjusting screw 16 peripheries are provided with groove 22, match with Adjusting bolt Adjusting screw positioning boss 21, adjusting screw rod 14 is housed in Adjusting bolt Adjusting screw installation cavity 15, adjusting screw rod 14 matches with Adjusting bolt Adjusting screw 16, be set with Regulation spring 13 on the adjusting screw rod 14 between Adjusting bolt Adjusting screw 16 and the barrier film pad 11, between adjusting screw rod 14 lower ends and the lower cover 17 seal ring 18 is housed, location snap ring 19 also is housed between adjusting screw rod 14 lower ends and the lower cover 17, is equipped with in adjusting screw rod 14 ends of lower cover 17 outer ends and regulates cap 20.
Claims (4)
1. a reduction valve is characterized in that comprising valve body, valve upper cover, valve lower cover, pressure gauge, sealing gasket, valve rod, barrier film pad, balance spring, Regulation spring, adjusting screw rod, Adjusting bolt Adjusting screw, seal ring and adjusting cap; Valve body one side is provided with high pressure air, liquid import, opposite side is provided with low pressure gas, liquid outlet, on valve body top valve upper cover is housed, pressure gauge is housed on the valve upper cover, be provided with stem sleeve in valve body, valve rod is installed in the sleeve, at valve rod top dress sealing gasket, be provided with ring-type high pressure air, liquid outlet in valve body, ring-type high pressure air, liquid outlet are distributed in the stem sleeve outside along valve rod top ring-type; In stem lower portion the barrier film pad is housed, the barrier film pad is installed between valve body and the valve lower cover, is being set with balance spring on the valve rod between barrier film pad and the stem sleeve;
In the valve lower cover, be provided with Adjusting bolt Adjusting screw cavity is installed, Adjusting bolt Adjusting screw is sleeved on Adjusting bolt Adjusting screw and installs in the cavity, in the Adjusting bolt Adjusting screw installation cavity, adjusting screw rod is housed, adjusting screw rod matches with Adjusting bolt Adjusting screw, be set with Regulation spring on the adjusting screw rod between Adjusting bolt Adjusting screw and the barrier film pad, between adjusting screw rod lower end and the lower cover seal ring is housed, the adjusting cap is housed in the adjusting screw rod end of lower cover outer end.
2. reduction valve according to claim 1 is characterized in that described valve rod adopts nut and packing ring to be fixed on the barrier film pad.
3. reduction valve according to claim 1, it is characterized in that in Adjusting bolt Adjusting screw is installed cavity, being provided with the Adjusting bolt Adjusting screw positioning boss, Adjusting bolt Adjusting screw is sleeved on Adjusting bolt Adjusting screw and installs in the cavity, and the Adjusting bolt Adjusting screw periphery is provided with groove, matches with the Adjusting bolt Adjusting screw positioning boss.
4. reduction valve according to claim 1 is characterized in that also being equipped with the location snap ring between adjusting screw rod lower end and lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200472524U CN201448471U (en) | 2009-07-13 | 2009-07-13 | Pressure relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200472524U CN201448471U (en) | 2009-07-13 | 2009-07-13 | Pressure relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448471U true CN201448471U (en) | 2010-05-05 |
Family
ID=42553187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200472524U Expired - Lifetime CN201448471U (en) | 2009-07-13 | 2009-07-13 | Pressure relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586691B (en) * | 2009-07-13 | 2010-11-24 | 张翼鹏 | Pressure reducing valve |
-
2009
- 2009-07-13 CN CN2009200472524U patent/CN201448471U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586691B (en) * | 2009-07-13 | 2010-11-24 | 张翼鹏 | Pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100505 Effective date of abandoning: 20090713 |