CN202432046U - Differential pressure type pneumatic operation valve - Google Patents
Differential pressure type pneumatic operation valve Download PDFInfo
- Publication number
- CN202432046U CN202432046U CN2011205605799U CN201120560579U CN202432046U CN 202432046 U CN202432046 U CN 202432046U CN 2011205605799 U CN2011205605799 U CN 2011205605799U CN 201120560579 U CN201120560579 U CN 201120560579U CN 202432046 U CN202432046 U CN 202432046U
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- China
- Prior art keywords
- groove
- valve body
- piston rod
- hole
- valve
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- Expired - Lifetime
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Abstract
The utility model relates to a differential pressure type pneumatic operation valve. The differential pressure type pneumatic operation valve is characterized in that the valve comprises a valve body (5), a first groove is arranged at one end of the valve body (5), a through hole is disposed on the valve body on the side surface of the first groove, a second groove is arranged at the other end of the valve body (5), a first screwed hole is disposed on the valve body (5) on the side surface of the second groove, the first groove and the second groove are communicated through the through hole, a piston rod (7) is mounted in the through hole, a spring (6) is sleeved on the piston rod (7) in the first groove, a steel ball (2) is disposed at the end of the piston rod (7), a guide piston (4) is mounted on the steel ball (2), an upper cover (1) is disposed on the valve body (5) at an opening position of the first groove, a second screwed hole is disposed on the upper cover (1), a seal piece is disposed at the end of the piston rod (7) in the second groove, a seal cover (8) is arranged on the valve body (5) at an opening position of the second groove, and a third screwed hole is disposed on the seal cover (8). The differential pressure type pneumatic operation valve has the advantages that operating characteristics are stable under the high pressure, the working channel is large, and the opening and closing are flexible, so that the technical problem of gas liquid discharge under the high pressure is solved.
Description
Technical field
The utility model relates to a kind of device that mainly is applicable to UNICOM and cut-out in gas under the high pressure and the liquid line, the pneumatic execution valve of especially a kind of differential pressure type.
Background technique
High pressure compressed gas cooling with separates after exist a large amount of liquid to get rid of, like untimely discharging, in the equipment of liquid entering back, can cause the damage of equipment, and bring about great losses.Therefore, the particular importance that seems of the timely discharging after pressurized gas are separated.
At present general is that a kind of escape cock is the electromagnetism escape cock, and when maximum working pressure was no more than 15MPa, its discharging latus rectum had only 2～5mm.Can not satisfy the discharging of big quantity of fluid, when containing impurity in the liquid, be prone to stop up latus rectum in the valve, make solenoid valve can not play the effect of opening and closing, influence the proper functioning of whole equipment.
The model utility content
The purpose of the utility model is exactly the problems referred to above that exist in the existing design in order to overcome, and provide a kind of differential pressure type pneumatic execution valve, solved pressurized gas cooling with separate after a large amount of fluid discharge problems.
The utility model solves the technological scheme that its technical problem adopted:
The pneumatic execution valve of differential pressure type is characterized in that: comprise valve body, valve body one end is provided with groove one, and the valve body of groove one side is provided with through hole; The other end is provided with groove two, and the valve body of groove two side faces is provided with between tapped hole one, two groove and is communicated with through a through hole; In through hole, be provided with a piston rod, the upper cover of piston rod shock mount in groove one also is provided with steel ball in the end of piston rod; Steel ball is provided with guide piston, on the valve body of groove one opening, is provided with loam cake, on cover and be provided with tapped hole two; The end of the piston rod in groove two is provided with diaphragm seal, on the valve body of groove one opening, is provided with sealing cover, and sealing cover is provided with tapped hole three.
Described guide piston is the cylindric of correcting, guide piston with the steel ball position contacting for being provided with the conical surface.
Described sealing cover has a stair-stepping protuberance in groove, described tapped hole three is threaded stepped by two ends.
The pneumatic execution valve of differential pressure type is designed to open type, and in the work, under the effect of external force, valve cuts out, remove external force after, valve is promptly opened.Owing to adopt the differential pressure type structure, can reach safe and reliable, automaticity is high, and its volume is little, simple in structure, stable performance, and good seal performance is specially adapted to the gas-liquid discharging under the 70MPa high pressure.
On the basis of above-mentioned main technical schemes, can increase following further perfect technological scheme:
The end of described groove one inner piston rod is a male end, on spring, is provided with guide cover, and guide cover is provided with gland and is connected with the piston rod jump ring.
The beneficial effect of the utility model is that the performance characteristic under high pressure is stable, and service aisle is big, opens and closes flexibly, thereby solves the technical barrier of the gas-liquid discharging under the high pressure.
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Description of drawings:
Fig. 1 is the plan view of the utility model.
Embodiment
As shown in Figure 1, the pneumatic execution valve of a kind of differential pressure type of the utility model comprises valve body 5; Valve body 5 one ends are provided with groove one, and the valve body 5 of groove one side is provided with through hole, and the other end is provided with groove two; The valve body 5 of groove two side faces is provided with between tapped hole one, two groove and is communicated with through a through hole, in through hole, is provided with a piston rod 7; Between piston rod 7 and through-hole wall, be provided with seal ring, the two ends of piston rod 7 are stretched into respectively in groove one and the groove two, and the end of groove one inner piston rod 7 is a male end; Pocketed springs 6 on the piston rod 7 in groove one is provided with guide cover 3 on spring 6, guide cover 3 is provided with gland and is connected with piston rod 7 jump rings; End at piston rod 7 also is provided with steel ball 2, and steel ball 2 is provided with guide piston 4, guide piston 4 with steel ball 2 position contacting for being provided with the conical surface; Be provided with seal ring between the inwall of guide piston 4 and groove one, on the valve body 5 of groove one opening, be provided with loam cake 1, one of loam cake 1 and groove are provided with seal ring; Loam cake 1 is provided with tapped hole two, and the end of the piston rod 7 in groove two is stair-stepping, and the end is inlaid with diaphragm seal; On the valve body 5 of groove two openings, be provided with sealing cover 8, sealing cover 8 is provided with tapped hole three, and described sealing cover 8 has a stair-stepping protuberance in groove two; Described tapped hole three is threaded stepped by two ends, the diameter on the described diaphragm seal is provided with seal ring greater than the tapped hole diameter of protuberance at groove two and sealing cover piece.
The working procedure of valve is following, and top is the interface of external control source of the gas, and when external low-pressure gas got into the seal space of loam cake 1 and guide piston, air pressure produced a pressure to guide piston, and guide piston 4 drives piston rod 7 through steel ball 2 and moves downward.Guide piston 4 is behind the elastic force that has overcome spring 6, and perseverance is stressed greater than piston rod 7.Therefore, when guide piston 4 pressurizeed with guide cover 3 seal spacies, the passage that can effectively cut off import and export guaranteed that the outlet of valve is closed.
After spreading external force, the pressure of the seal space of loam cake 1 and guide piston is 0, and at this moment under the elastic force effect of spring 6, piston rod 7 drives on the guide pistons and moves, and the import and export passage of valve is by UNICOM, opening of valves.
Claims (2)
1. the pneumatic execution valve of differential pressure type, it is characterized in that: comprise valve body (5), valve body (5) one ends are provided with groove one; The valve body of groove one side is provided with through hole, and the other end is provided with groove two, and the valve body of groove two side faces (5) is provided with tapped hole one; Be communicated with through a through hole between two grooves, in through hole, be provided with a piston rod (7), the piston rod in groove one (7) is gone up pocketed springs (6); Also be provided with steel ball (2) in the end of piston rod (7), steel ball (2) is provided with guide piston (4), on the valve body (5) of groove one opening, is provided with loam cake (1); Loam cake (1) is provided with tapped hole two; The end of the piston rod in groove two (7) is provided with diaphragm seal, on the valve body (5) of groove two openings, is provided with sealing cover (8), and sealing cover (8) is provided with tapped hole three.
2. the pneumatic execution valve of differential pressure type according to claim 1; It is characterized in that: the end of the piston rod (7) in the described groove one is a male end; On spring (6), be provided with guide cover (3), guide cover (3) is provided with gland and is connected with piston rod (7) jump ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205605799U CN202432046U (en) | 2011-12-29 | 2011-12-29 | Differential pressure type pneumatic operation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205605799U CN202432046U (en) | 2011-12-29 | 2011-12-29 | Differential pressure type pneumatic operation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432046U true CN202432046U (en) | 2012-09-12 |
Family
ID=46781492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205605799U Expired - Lifetime CN202432046U (en) | 2011-12-29 | 2011-12-29 | Differential pressure type pneumatic operation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432046U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928178A (en) * | 2012-10-31 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
| CN108105395A (en) * | 2017-12-15 | 2018-06-01 | 江苏克劳特低温技术有限公司 | A kind of LNG vehicle gas cylinders low temperature gas returning port special opening valve and return-air valve |
-
2011
- 2011-12-29 CN CN2011205605799U patent/CN202432046U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928178A (en) * | 2012-10-31 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
| CN102928178B (en) * | 2012-10-31 | 2014-12-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
| CN108105395A (en) * | 2017-12-15 | 2018-06-01 | 江苏克劳特低温技术有限公司 | A kind of LNG vehicle gas cylinders low temperature gas returning port special opening valve and return-air valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
|
| CX01 | Expiry of patent term |