CN203868441U - Corrugated pipe pressure-relief valve - Google Patents
Corrugated pipe pressure-relief valve Download PDFInfo
- Publication number
- CN203868441U CN203868441U CN201420096851.6U CN201420096851U CN203868441U CN 203868441 U CN203868441 U CN 203868441U CN 201420096851 U CN201420096851 U CN 201420096851U CN 203868441 U CN203868441 U CN 203868441U
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- CN
- China
- Prior art keywords
- pressure
- valve
- corrugated pipe
- relief valve
- pipe pressure
- 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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- Control Of Fluid Pressure (AREA)
- Fluid-Driven Valves (AREA)
Abstract
A corrugated pipe pressure-relief valve comprises a valve body upper cover, a screw, a spring upper seat, an adjustment spring, an upper pressing block, a large corrugated pipe, a small corrugated pipe, a lower pressing block, a valve rod, a valve seat bearing seat, a valve seat and a valve body. When the corrugated pipe pressure-relief valve works, the screw is rotated, and the pressure of an air outlet of the corrugated pipe pressure-relief valve is set as a certain value. When the pressure of the air inlet is smaller than the set value, the corrugated pipe pressure-relief valve is always in an opening state. When the pressure of the air inlet is larger than the set value, the air pressure at an outlet can enter a feedback chamber to enable the upper pressing block to be subjected to reverse pressure, the valve rod moves upwards, and then the corrugated pipe pressure-relief valve is closed. When the pressure at the air outlet is slowly decreased to the set value, the valve rod of the corrugated pipe pressure-relief valve moves downwards again, and the corrugated pipe pressure-relief valve is opened. The above operation is repeated in this way, the pressure of the air outlet of the corrugated pipe pressure-relief valve always keeps the set value, and the purpose of stabilizing the pressure of the air outlet is achieved.
Description
Technical field
The utility model relates to a kind of reduction valve, specifically relates to a kind of bellows reduction valve.
Background technique
The sensor of existing reduction valve has two kinds: 1, metal diaphragm: flow is restricted, and as accomplished large flow, valve body will amplify, so cost is very high; 2, piston: take high pressure as main (more than 3.5MPa), when low pressure insufficient sensitivity, cannot be for clean system.
Summary of the invention
The utility model is mainly to solve the existing technical problem of above-mentioned prior art, and a kind of bellows reduction valve is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of bellows reduction valve, comprise valve upper cover, the top of described valve upper cover arranges screw rod, in described screw rod, be interspersed with the spring seat of honour, lower end, the described spring seat of honour connects Regulation spring, the described Regulation spring the other end withstands on upper holder block, and large bellows and small corrugated pipe are set between described upper holder block and lower lock block; Described valve rod passes valve seat, valve seat bearing, lower lock block and is connected with upper holder block.
As preferably, described valve body arranges vent rod, and described vent rod connects air outlet and feedback chamber.
The beneficial effect the utlity model has: by bellows is set, provide longer valve rod travel in the situation that of high flow capacity, low-pressure, compare with two traditional sensors, there is the features such as valve rod travel is large, sensitivity is high.Therefore, the utlity model has the features such as rational in infrastructure.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
In figure: 1-valve upper cover, the 2-spring seat of honour, 3-screw rod, 4-feeds back chamber, 5-valve seat bearing, 6-valve seat, 7-valve rod, 8-valve body, 9-upper holder block, the large bellows of 10-, 11-feeds back chamber, 12-small corrugated pipe, 13-lower lock block, 14-vent rod, 15-air outlet, 16-suction port.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1, a kind of bellows reduction valve, comprise valve upper cover, the top of described valve upper cover arranges screw rod, in described screw rod, be interspersed with the spring seat of honour, lower end, the described spring seat of honour connects Regulation spring, and the described Regulation spring the other end withstands on upper holder block, and large bellows and small corrugated pipe are set between described upper holder block and lower lock block; Described valve rod passes valve seat, valve seat bearing, lower lock block and is connected with upper holder block.Described valve body arranges vent rod, and described vent rod connects air outlet and feedback chamber.
During work, first rotary screw, moves down the spring seat of honour, and makes Regulation spring pressurized, then upper holder block is produced to a downforce, and the air outlet pressure setting that makes bellows reduction valve is a certain value; When the pressure of suction port is less than the numerical value of this setting, bellows reduction valve is always in opening state; And when the pressure of suction port is greater than the numerical value of this setting, the air pressure in outlet port can enter the reverse pressure that feedback chamber is subject to upper holder block, make on valve rod to move, then close bellows reduction valve; When the pressure of air outlet, be slowly down to the numerical value of setting when following, the valve rod of bellows reduction valve can move down again, and bellows reduction valve is opened; And so forth, make the pressure of the air outlet of bellows reduction valve remain at the numerical value of setting, reach the object of stablizing air outlet pressure.
Finally, it should be pointed out that above embodiment is only the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, can also have many distortion.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all should think and belong to protection domain of the present utility model.
Claims (2)
1. a bellows reduction valve, comprise valve upper cover, the top that it is characterized in that described valve upper cover arranges screw rod, in described screw rod, be interspersed with the spring seat of honour, lower end, the described spring seat of honour connects Regulation spring, the described Regulation spring the other end withstands on upper holder block, and large bellows and small corrugated pipe are set between described upper holder block and lower lock block; Described valve rod passes valve seat, valve seat bearing, lower lock block and is connected with upper holder block.
2. according to a kind of bellows reduction valve described in claim 1, it is characterized in that described valve body arranges vent rod, described vent rod connects air outlet and feedback chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096851.6U CN203868441U (en) | 2014-03-05 | 2014-03-05 | Corrugated pipe pressure-relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096851.6U CN203868441U (en) | 2014-03-05 | 2014-03-05 | Corrugated pipe pressure-relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868441U true CN203868441U (en) | 2014-10-08 |
Family
ID=51649395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420096851.6U Expired - Fee Related CN203868441U (en) | 2014-03-05 | 2014-03-05 | Corrugated pipe pressure-relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868441U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927742A (en) * | 2016-07-08 | 2016-09-07 | 成都航天烽火精密机电有限公司 | Pressure reducing valve for low-pressure gas |
| CN109751419A (en) * | 2019-01-23 | 2019-05-14 | 永嘉县瑞隆阀门有限公司 | Double-balance bellows pressure reducing valve |
| CN110260005A (en) * | 2019-06-14 | 2019-09-20 | 西安航天动力研究所 | A kind of reversed off-load distribution impulse formula high-precision gas decompressor of impact resistance |
-
2014
- 2014-03-05 CN CN201420096851.6U patent/CN203868441U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927742A (en) * | 2016-07-08 | 2016-09-07 | 成都航天烽火精密机电有限公司 | Pressure reducing valve for low-pressure gas |
| CN105927742B (en) * | 2016-07-08 | 2018-05-18 | 成都航天烽火精密机电有限公司 | A kind of low-pressure gas pressure reducing valve |
| CN109751419A (en) * | 2019-01-23 | 2019-05-14 | 永嘉县瑞隆阀门有限公司 | Double-balance bellows pressure reducing valve |
| CN109751419B (en) * | 2019-01-23 | 2024-02-13 | 浙江瑞隆流体控制有限公司 | Double-balance type corrugated pipe pressure reducing valve |
| CN110260005A (en) * | 2019-06-14 | 2019-09-20 | 西安航天动力研究所 | A kind of reversed off-load distribution impulse formula high-precision gas decompressor of impact resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20180305 |