CN204213460U - Reduction valve - Google Patents
Reduction valve Download PDFInfo
- Publication number
- CN204213460U CN204213460U CN201420757657.8U CN201420757657U CN204213460U CN 204213460 U CN204213460 U CN 204213460U CN 201420757657 U CN201420757657 U CN 201420757657U CN 204213460 U CN204213460 U CN 204213460U
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- CN
- China
- Prior art keywords
- valve
- diaphragm
- blanking cover
- diaphragm unit
- valve body
- 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 discloses a kind of reduction valve, comprise valve gap, valve body, valve gap is arranged on valve body, diaphragm unit is provided therebetween, pressure regulating part is arranged in valve gap, air-inlet cavity is provided with in valve body, outlet chamber and blanking cover hole, air-inlet cavity is connected with blanking cover hole with outlet chamber, blanking cover is arranged in blanking cover hole, blanking cover is provided with mounting groove, valve cast, sealing block, Returnning spring is arranged in mounting groove, push rod one end props up Returnning spring, valve cast compresses push rod, the push rod the other end is provided with gland, diaphragm unit is positioned at above gland, diaphragm balance air chamber is formed between diaphragm unit and valve body, described diaphragm unit is made up of polytetrafluoroethylsealed sealed pad and elastomer diaphragm, polytetrafluoroethylsealed sealed pad contacts with diaphragm Balance Air indoor gas.The utility model structure is simple, diaphragm unit long service life, improves reduction valve safety in utilization.
Description
Technical field
The utility model relates to a kind of reduction valve, particularly a kind of reduction valve being applicable to special gas.
Background technique
Spring seat and elastomer diaphragm tighten together by the inner tip-lever support of current special gas diaphragm type pressure-reducing valve, and when used over time, diaphragm very easily leaks gas, cause pressure regulation malfunctioning, have a strong impact on element normally to work, even cause the generation of unintended consequence, functional reliability is poor.
Summary of the invention
The problem that will solve above-mentioned diaphragm structure and easily leak gas of the present utility model, the life-span is low, and a kind of special gas reduction valve provided.
The technological scheme that the utility model technical solution problem adopts is: reduction valve, comprise valve gap, valve body, valve gap is arranged on valve body, diaphragm unit is provided therebetween, pressure regulating part is arranged in valve gap, air-inlet cavity is provided with in valve body, outlet chamber and blanking cover hole, air-inlet cavity is connected with blanking cover hole with outlet chamber, blanking cover is arranged in blanking cover hole, blanking cover is provided with mounting groove, valve cast, sealing block, Returnning spring is arranged in mounting groove, push rod one end props up Returnning spring, valve cast compresses push rod, the push rod the other end is provided with gland, diaphragm unit is positioned at above gland, diaphragm balance air chamber is formed between diaphragm unit and valve body, described diaphragm unit is made up of polytetrafluoroethylsealed sealed pad and elastomer diaphragm, polytetrafluoroethylsealed sealed pad contacts with diaphragm Balance Air indoor gas.
Described valve gap is provided with connecting-tube nozzle, and connecting-tube nozzle can connect gas collection vessel.
Described pressure regulating part comprises definite value spring, lower spring cup, upper spring seat, adjusting nut and adjustable lever, lower spring cup contacts with diaphragm unit, definite value spring fitting is between upper spring seat and lower spring cup, adjusting nut pressure is set on valve gap, adjustable lever is contained on adjusting nut, adjustable lever one end extruding upper spring seat, valve gap is stretched out in one end.Described adjustable lever is provided with hand handle.
The beneficial effects of the utility model are, (1) diaphragm unit adopts polytetrafluoroethylsealed sealed pad, elastomer diaphragm combinationally uses, the polytetrafluoroethylsealed sealed erosion damage to rubber form being lined with effect and having isolated harmful element in gas.Improve the working life of rubber parts.(2) gland free state is placed on push rod and is stacked together with polytetrafluoroethylsealed sealed pad, elastomer diaphragm, the damage that frictional force when effectively prevent pressure regulation and torsion cause polytetrafluoroethylsealed sealed pad, diaphragm, improve the working life of Sealing, improve working sensitivity and sealing; (3) valve gap is provided with connecting-tube nozzle, can by leakage gas centralized recovery, and prevention harmful gas is surprisingly revealed in an atmosphere, causes the accident.(4) this valve arrangement is simple, and installation and maintenance are convenient, need not remove and install pipeline, can carry out inside maintenance.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
In figure, 1 mounting groove, 2 blanking covers, 3 pads, 4 valve casts, 5 sealing blocks, 6 blanking cover holes, 7 guide collar, 8 air-inlet cavitys, 9 diaphragm balance air chambers, 10 polytetrafluoroethylsealed sealed pads, 11 elastomer diaphragms, 12 lower spring cups, 13 upper spring seats, 14 adjusting nuts, 15 adjustable levers, 16 hand handles, 17 valve gaps, 18 definite value springs, 19 connecting-tube nozzles, 20 glands, 21 valve bodies, 22 outlet chambers, 23 push rods, 24 Returnning springs.
Embodiment
Reduction valve of the present utility model, comprise valve gap 17, valve body 21, valve gap 17 is arranged on valve body 21, and diaphragm unit is provided therebetween, and pressure regulating part is arranged in valve gap 17.Be provided with air-inlet cavity 8, outlet chamber 22 and blanking cover hole 6 in valve body 21, air-inlet cavity 8 is connected with blanking cover hole 6 with outlet chamber 22, and blanking cover 2 is arranged in blanking cover hole 6.The pad 3 sealed is provided with between blanking cover 2 and valve body 21.Blanking cover 2 is provided with mounting groove 1, valve cast 4, sealing block 5, Returnning spring 24 are arranged in mounting groove 1, push rod 23 one end props up Returnning spring 24, valve cast 4 compresses push rod 23, push rod 23 the other end is provided with gland 20, diaphragm unit is positioned at above gland 20, the guide collar 7 sealed is provided with between push rod 23 top and valve body 21, form diaphragm between diaphragm unit and valve body 21 and balance air chamber 9, described diaphragm unit is made up of polytetrafluoroethylsealed sealed pad 10 and elastomer diaphragm 11, and polytetrafluoroethylsealed sealed pad 10 and diaphragm balance gas in air chamber 9 and contact.
Pressure regulating part of the present utility model comprises definite value spring 18, lower spring cup 12, upper spring seat 13, adjusting nut 14 and adjustable lever 15, lower spring cup 12 contacts with diaphragm unit, definite value spring 18 is arranged between upper spring seat 13 and lower spring cup 12, adjusting nut 14 pressure is set on valve gap 17, adjustable lever 15 is contained on adjusting nut 14, adjustable lever 15 one end extruding upper spring seat 13, valve gap 17 is stretched out in one end.Adjustable lever 15 is provided with hand 16, convenient adjustment adjustable lever 15.
The utility model is provided with connecting-tube nozzle 19 on valve gap 17, and connecting-tube nozzle can pass through tubes connection gas collection vessel.When diaphragm unit is surprisingly revealed, can by gas leakage centralized recovery, prevention harmful gas is surprisingly revealed in an atmosphere.
During work, air-inlet cavity 8 passes into pressurized air, original state, and valve cast 4 will be communicated with blanking cover hole 6 shutoff of air-inlet cavity 8 and outlet chamber 22 by sealing block 5, and outlet chamber 22 pressure is zero.When adjustment adjustable lever 15 compresses definite value spring 18, promote push rod 23 and valve cast 4 is moved down air-inlet cavity 8 and outlet chamber 22 conducting, output cavity 22 pressure increases gradually, until adjust to required delivery pressure value.When adjusting adjustable lever 15 and loosening definite value spring 18, delivery outlet pressure reduces gradually, and the conducting between air-inlet cavity 8 and outlet chamber 22 is closed in valve cast 4 rising, until outlet chamber pressure is zero.
Claims (4)
1. reduction valve, comprise valve gap, valve body, valve gap is arranged on valve body, diaphragm unit is provided therebetween, it is characterized in that: pressure regulating part is arranged in valve gap, air-inlet cavity is provided with in valve body, outlet chamber and blanking cover hole, air-inlet cavity is connected with blanking cover hole with outlet chamber, blanking cover is arranged in blanking cover hole, blanking cover is provided with mounting groove, valve cast, sealing block, Returnning spring is arranged in mounting groove, push rod one end props up Returnning spring, valve cast compresses push rod, the push rod the other end is provided with gland, diaphragm unit is positioned at above gland, diaphragm balance air chamber is formed between diaphragm unit and valve body, described diaphragm unit is made up of polytetrafluoroethylsealed sealed pad and elastomer diaphragm, polytetrafluoroethylsealed sealed pad contacts with diaphragm Balance Air indoor gas.
2. reduction valve according to claim 1, is characterized in that: described valve gap is provided with connecting-tube nozzle, and connecting-tube nozzle can connect gas collection vessel.
3. reduction valve according to claim 1, it is characterized in that: described pressure regulating part comprises definite value spring, lower spring cup, upper spring seat, adjusting nut and adjustable lever, lower spring cup contacts with diaphragm unit, definite value spring fitting is between upper spring seat and lower spring cup, adjusting nut pressure is set on valve gap, adjustable lever is contained on adjusting nut, and adjustable lever one end extruding upper spring seat, valve gap is stretched out in one end.
4. reduction valve according to claim 3, is characterized in that: described adjustable lever is provided with hand handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757657.8U CN204213460U (en) | 2014-12-08 | 2014-12-08 | Reduction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757657.8U CN204213460U (en) | 2014-12-08 | 2014-12-08 | Reduction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204213460U true CN204213460U (en) | 2015-03-18 |
Family
ID=52982132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757657.8U Expired - Fee Related CN204213460U (en) | 2014-12-08 | 2014-12-08 | Reduction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204213460U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156701A (en) * | 2015-09-15 | 2015-12-16 | 芜湖市汽车产业技术研究院有限公司 | Pressure adjusting valve |
| CN105465078A (en) * | 2015-12-25 | 2016-04-06 | 吴忠仪表有限责任公司 | Novel single-channel gas pressure controller |
| CN112762209A (en) * | 2021-01-22 | 2021-05-07 | 台州市创导科学仪器有限公司 | Precise pressure regulating valve |
-
2014
- 2014-12-08 CN CN201420757657.8U patent/CN204213460U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156701A (en) * | 2015-09-15 | 2015-12-16 | 芜湖市汽车产业技术研究院有限公司 | Pressure adjusting valve |
| CN105465078A (en) * | 2015-12-25 | 2016-04-06 | 吴忠仪表有限责任公司 | Novel single-channel gas pressure controller |
| CN112762209A (en) * | 2021-01-22 | 2021-05-07 | 台州市创导科学仪器有限公司 | Precise pressure regulating valve |
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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 |
Granted publication date: 20150318 Termination date: 20171208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |