CN2750145Y - Back pressure balanced type minimum pressure adjustable valve - Google Patents
Back pressure balanced type minimum pressure adjustable valve Download PDFInfo
- Publication number
- CN2750145Y CN2750145Y CN 200420095311 CN200420095311U CN2750145Y CN 2750145 Y CN2750145 Y CN 2750145Y CN 200420095311 CN200420095311 CN 200420095311 CN 200420095311 U CN200420095311 U CN 200420095311U CN 2750145 Y CN2750145 Y CN 2750145Y
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- Prior art keywords
- piston
- pressure
- spring
- valve
- adjustable
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- Expired - Lifetime
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- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The utility model discloses a back-pressure balanced-type adjustable valve with minimum pressure, which comprises a valve body, a pilot valve, a piston cylinder, a piston and a return spring of the piston, wherein a back-pressure cavity is arranged between the piston and the piston cylinder; an air inlet and an air outlet are arranged in the valve body. The utility model is characterized in that an adjustable device which acts on the piston is arranged on the pressure valve. The adjustable device comprises an adjustable spring and an adjusting bolt thereof, wherein one end of the adjustable spring which is arranged between a piston rod and the piston cylinder acts on the piston rod; the other end of the adjustable spring acts on the adjusting bolt. The adjustable spring can be an independent spring and can be a spring which is formed by that the return spring of the piston and the adjustable spring are integrated. The utility model has the advantages that critical pressure can be adjusted when the pressure valve is opened.
Description
Technical field
The utility model relates to a kind of pressure valve, is the back-pressure balance formula minimum pressure valve of the critical pressure of a kind of adjustable valve when opening specifically.
Background technique
The applicant has proposed the patent application of a kind of " back-pressure balance formula minimum pressure valve " by name on August 18th, 2003, a back pressure cavity is established in this patent application between piston and piston cylinder, the pressure major part that the gas of suction port end acts on the piston is come balance by the gas pressure in the back pressure cavity, make the spring on the piston not retrained by the suction port latus rectum of valve, the latus rectum of valve and flow can strengthen arbitrarily, and spring can the less spring of preferred dimension, thereby the volume of whole valve is reduced, assembling and debugging are easily, spring vibration reduces, the pulsating nature that gas is produced is little, the sensitivity of valve, open and shut characteristic is good, improves the working life of spring and the life-span of whole valve.Find that in the using process of reality because that the critical pressure of different user during to the opening of pressure valve requires is different, at this moment, people have only the spring by changing between piston and piston cylinder to satisfy usage requirement.In addition, because the manufacturing of spring certainly exists error, also can bring error to the critical pressure that pressure valve is opened.In these cases, people use very trouble, can not satisfy the pressure valve high-precision requirement simultaneously.
Summary of the invention
The back-pressure balance formula minimum pressure valve of the critical pressure that the purpose of this utility model provides a kind of adjustable whole pressure valve when opening.
The utility model is achieved through the following technical solutions.
The adjustable minimum pressure valve of a kind of back-pressure balance formula, comprise valve body, pilot valve, piston cylinder, piston and piston reset spring, be provided with back pressure cavity between piston and piston cylinder, be provided with suction port and air outlet in the valve body, it is characterized in that: described pressure valve is provided with the adjusting device that acts on the piston.
Described adjusting device comprises adjustable spring and the adjusting bolt thereof that is arranged between piston rod and piston cylinder, and an end of adjustable spring acts on the piston rod, and the other end acts on to be regulated on the bolt.
Described adjustable spring can be spring independently, also the spring that can unite two into one for piston reset spring and adjustable spring.
The utility model compared with prior art has the following advantages.
The utility model is owing to be equipped with the critical pressure adjusting device that valve is opened, and adjusting device constitutes by regulating bolt and adjustable spring, and an end of adjustable spring acts on the piston rod, and the other end acts on to be regulated on the bolt.When the factor affecting such as precision reduction of each part because of accuracy of manufacturing or the permanent use of valve process rear spring, and during the critical pressure need guarantee that valve is opened the time, can regulate adjustable spring by regulating moving up and down of bolt, it is adjustable that the pressure that acts on the piston is obtained, can accurately guarantee the critical pressure that valve is opened like this, thereby satisfy usage requirement.The critical pressure of valve being opened as the user increases or when reducing, the pressure of spring action on piston need increase or reduce equally, at this moment, the different critical pressure requirement in the time of can reaching different user by the mode that moves up and down of regulating bolt equally valve is opened.This shows that pressure valve described in the utility model can conveniently change the pressure that acts on the spring on the piston, the different critical pressure in the time of on the one hand can satisfying different user valve is opened has also improved the precision of product on the other hand.
Description of drawings
Fig. 1 is the mode of execution () of the adjustable minimum pressure valve of the utility model back-pressure balance formula;
Fig. 2 is the mode of execution (two) of the adjustable minimum pressure valve of the utility model back-pressure balance formula;
Fig. 3 is the mode of execution (three) of the adjustable minimum pressure valve of the utility model back-pressure balance formula;
Fig. 4 is the mode of execution (four) of the adjustable minimum pressure valve of the utility model back-pressure balance formula.
Embodiment
Below in conjunction with accompanying drawing the adjustable minimum pressure valve of the utility model back-pressure balance formula is described in further detail.
As shown in Figure 1; the adjustable minimum pressure valve of back-pressure balance formula comprises valve body 1; air inlet cavity a; cavity b gives vent to anger; pilot valve 2; ball 3; pilot valve Returnning spring 4; piston 5; piston reset spring 6; piston cylinder 7; regulate bolt 8; adjustable spring 9 component such as grade; be provided with a back pressure cavity e between piston 5 and the piston cylinder 7; passage between back pressure cavity e and the air inlet cavity a is a built-in channel; this passage is by the hard straight passage d that passes piston base; the cross aisle g of pilot valve; the middle passage f of pilot valve and the lower channel c formation of passing pilot valve; the hard straight passage d of piston base helps bleeding off the ponding in the piston, the preservation of the lubricating grease in the O type circle on protection spring non-corrosive and the piston.Be provided with pilot valve Returnning spring 4 in the middle passage f, ball 3 is arranged in the confluce of passage f and lower channel c, and this ball 3 can be made with rubber, also can select for use other shapes or material to replace, as long as play single effect.Pilot valve Returnning spring 4 can act on the ball 3, also can act directly on the pilot valve 2.Piston reset spring 6 is sleeved on the piston rod of piston 5, and is positioned at back pressure cavity e.Regulate bolt 8 and be arranged on piston cylinder 7 tops, and can move up and down by screw thread.Pressure adjusting spring 9 is between piston cylinder and piston rod, and the one end acts on the piston rod, and the other end acts on the spring seat 10 of regulating bolt 8 ends.When screwing adjusting bolt 8, adjusting bolt 8 can drive spring seat 10 and move up and down, thereby changes the elastic force of adjustable spring 9, and the pressure that promptly acts on piston 5 obtains adjustable.The main difference part of Fig. 2 and Fig. 1 is that adjustable spring 9 unites two into one with piston reset spring 6, directly by regulating the spring force that bolt 8 comes regulating piston Returnning spring 6, reaches the different critical pressures of opening.The difference of Fig. 3, Fig. 4 and Fig. 1, Fig. 2 is, Fig. 3 communicates with air inlet cavity a by an external passage h with back pressure cavity e among Fig. 4 figure, need not the one-way valve effect.
Claims (3)
1, the adjustable minimum pressure valve of a kind of back-pressure balance formula, comprise valve body, pilot valve, piston cylinder, piston and piston reset spring, be provided with back pressure cavity between piston and piston cylinder, be provided with suction port and air outlet in the valve body, it is characterized in that: described pressure valve is provided with the adjusting device that acts on the piston.
2, the adjustable minimum pressure valve of back-pressure balance formula according to claim 1, it is characterized in that: described adjusting device comprises the adjustable spring that is arranged between piston rod and piston cylinder and regulates bolt, one end of adjustable spring acts on the piston rod, and the other end acts on to be regulated on the bolt.
3, the adjustable minimum pressure valve of back-pressure balance formula according to claim 2, it is characterized in that: described adjustable spring is a piston reset spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095311 CN2750145Y (en) | 2004-11-12 | 2004-11-12 | Back pressure balanced type minimum pressure adjustable valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420095311 CN2750145Y (en) | 2004-11-12 | 2004-11-12 | Back pressure balanced type minimum pressure adjustable valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2750145Y true CN2750145Y (en) | 2006-01-04 |
Family
ID=35823528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420095311 Expired - Lifetime CN2750145Y (en) | 2004-11-12 | 2004-11-12 | Back pressure balanced type minimum pressure adjustable valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2750145Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101520103B (en) * | 2009-02-10 | 2011-01-19 | 南通市红星空压机配件制造有限公司 | Balance type minimum pressure valve |
| CN101652735B (en) * | 2007-03-20 | 2011-09-07 | 罗伯特.博世有限公司 | Pressure valve |
| CN102434692A (en) * | 2011-09-23 | 2012-05-02 | 广东正力精密机械有限公司 | Partial back pressure balance membrane sheet type minimum pressure valve |
| CN101836020B (en) * | 2008-03-27 | 2012-11-14 | 艾拉斯科普库空气动力股份有限公司 | Minimum pressure valve |
| CN101504088B (en) * | 2009-02-12 | 2012-11-28 | 白龙山 | Multifunctional general balance valve |
| CN107035876A (en) * | 2017-05-10 | 2017-08-11 | 安徽红星阀门有限公司 | A kind of low water damages pressure reduction type backflow preventer |
| CN109139425A (en) * | 2018-11-05 | 2019-01-04 | 南通市红星空压机配件制造有限公司 | Oil-injection-preventing air inlet valve for electric bus air compressor |
-
2004
- 2004-11-12 CN CN 200420095311 patent/CN2750145Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652735B (en) * | 2007-03-20 | 2011-09-07 | 罗伯特.博世有限公司 | Pressure valve |
| CN101836020B (en) * | 2008-03-27 | 2012-11-14 | 艾拉斯科普库空气动力股份有限公司 | Minimum pressure valve |
| CN101520103B (en) * | 2009-02-10 | 2011-01-19 | 南通市红星空压机配件制造有限公司 | Balance type minimum pressure valve |
| CN101504088B (en) * | 2009-02-12 | 2012-11-28 | 白龙山 | Multifunctional general balance valve |
| CN102434692A (en) * | 2011-09-23 | 2012-05-02 | 广东正力精密机械有限公司 | Partial back pressure balance membrane sheet type minimum pressure valve |
| CN102434692B (en) * | 2011-09-23 | 2013-10-23 | 广东正力精密机械有限公司 | Partial back pressure balance membrane sheet type minimum pressure valve |
| CN107035876A (en) * | 2017-05-10 | 2017-08-11 | 安徽红星阀门有限公司 | A kind of low water damages pressure reduction type backflow preventer |
| CN107035876B (en) * | 2017-05-10 | 2023-08-18 | 安徽红星阀门有限公司 | Low water loss decompression type backflow preventer |
| CN109139425A (en) * | 2018-11-05 | 2019-01-04 | 南通市红星空压机配件制造有限公司 | Oil-injection-preventing air inlet valve for electric bus air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG ZHENGLI PRECISION MACHINERY CO., LTD. Free format text: FORMER OWNER: ZHA QIAN; PATENTEE Effective date: 20080118 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080118 Address after: No. 10 Alex Hua Tian Road, Shunde hi tech Zone (Ronggui), Guangdong, Foshan: 528306 Patentee after: Guangdong Ganey Precision Machinery Co., Ltd. Address before: No. 11, tea tree road, Ronggui, Foshan, Shunde, Guangdong Province, China: 528305 Co-patentee before: Cha Shiliang Patentee before: Zha Qian Co-patentee before: Chen Weicheng |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanxi Huaxiang Tongchuang Casting Co., Ltd. Assignor: Guangdong Ganey Precision Machinery Co., Ltd. Contract fulfillment period: 2008.7.20 to 2013.7.19 Contract record no.: 2009990001144 Denomination of utility model: Back pressure balanced type minimum pressure adjustable valve Granted publication date: 20060104 License type: Exclusive license Record date: 20091014 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.20 TO 2013.7.19; CHANGE OF CONTRACT Name of requester: SHANXI HUAXIANG TONTRU CASTING CO., LTD. Effective date: 20091014 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141112 Granted publication date: 20060104 |