CN1721749A - Two-position two-way pneumatic control valve - Google Patents
Two-position two-way pneumatic control valve Download PDFInfo
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- CN1721749A CN1721749A CN 200410027988 CN200410027988A CN1721749A CN 1721749 A CN1721749 A CN 1721749A CN 200410027988 CN200410027988 CN 200410027988 CN 200410027988 A CN200410027988 A CN 200410027988A CN 1721749 A CN1721749 A CN 1721749A
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- spool
- valve body
- cavity
- way pneumatic
- piston
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- 239000000945 filler Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 239000000446 fuel Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002153 concerted effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
This invention discloses one two-way air control valve, which comprises valve, valve core and piston, wherein, the valve is located with one chamber and the core is located inside valve chamber; the one end of chamber is oil entrance and the other end is exit; the chamber side wall is located with one control signal mouth; the piston and valve core are connected and can slide through chamber; the piston and valve and core are located with sealed structure; the valve core has one hollow chamber on one end and the side wall near end is located with valve hole.
Description
Technical field
The present invention relates to a kind of 2/2-way Pneumatic valve.
Background technique
At present, the 2/2-way Pneumatic valve is used widely in all trades and professions, has particularly become its critical piece in gas compressor.In gas compressor, the 2/2-way Pneumatic valve generally is installed on the oil strainer pipeline afterwards, its effect mainly contains two: the one, after gas compressor starts, the 2/2-way Pneumatic valve is in time opened, oil enters in the main frame by the oil circuit in the 2/2-way Pneumatic valve, guarantees the lubricated and cooling of gas compressor; The 2nd, after gas compressor was shut down, the 2/2-way Pneumatic valve was in time closed, and cut off the passage to the main frame fuel feeding, to avoid gas compressor counter-rotating, the lubricant oil generation from accidents such as suction port overflow.
In the gas compressor industry, people are common, and the installation of valve generally is to make spool be in the vertical direction setting to Fig. 1 (A), Fig. 1 (B) and the 2/2-way Pneumatic valve shown in Fig. 2 (A), Fig. 2 (B), and its main purpose is to prolong the working life of spool; Do not influence being sealed and matched between 2/2-way Pneumatic valve inner spool and the valve body.Their working principle is basic identical, be that example is described its working procedure in detail now with the mode of execution shown in Fig. 1 (A), Fig. 1 (B), its working principle is: shown in Fig. 1 (A), after gas compressor starts, compressed gas enters from control signal mouth c, promote piston 3 and drive spool 2 up to move, thereby open passage, shown in Fig. 1 (B) to the gas compressor fuel feeding.At this moment, lubricant oil enters from valve body filler opening a, and enters in the hollow columnar cavity in the spool 2 by the spool cross-drilled hole d on the spool 2, from spool cross-drilled hole e outflow, provides lubricant oil by the oil outlet b on the supporting base 4 to gas compressor more then.After gas compressor is shut down; also stop simultaneously sending into pressurized gas to control signal mouth c; the lower end of piston 3 loses the supporting of pressurized gas; spool 2 is under the pressure effect of spring 5 and lubricant oil, and spool 2 all moves down with piston 3, after moving to certain position; because spool 2 cooperates with conical surface seal between the valve body 1; the filler opening a and the oil outlet b of valve body are separated, stop to wait for the beginning of next work cycle to the main frame fuel feeding.
All there are following two big shortcomings in 2/2-way Pneumatic valve shown in Fig. 1 (A), Fig. 1 (B) and Fig. 2 (A), Fig. 2 (B): (one), part are many, complex structure, boundary dimension greatly and heaviness, cost high; (2), short, poor reliability of life-span.In Fig. 1 (B), after spool 2 was opened and oil circuit connected, lubricant oil was from the valve body filler opening a radial inflow of spool 2 sides, made the top of spool 2 be subjected to radial force effect perpendicular to spool 2 axis; When lubricant oil when spool cross-drilled hole e flows out, the bottom of spool 2 also is subjected to the radial force effect.Because the flow velocity of lubricant oil is not steadily absolute, spool 2 is when work, constantly along its direction of axis line shake, add the radial force effect that spool 2 top and the bottom are subjected to, make the partial sidewall of spool 2 be close to body cavity and its motion relatively, thereby spool 2 phenomenon easy to wear occurs, and then shorten the working life of 2/2-way Pneumatic valve.The lubricant oil that enters the 2/2-way Pneumatic valve at first will filter by filter, but the lubricant oil after can not guaranteeing to filter from filter definitely cleans, when impurity enters into the 2/2-way Pneumatic valve, add the effect of radial force, spool 2 is often blocked by impurity and can not work.So there is the shortcoming of complex structure, life-span weak point, poor reliability in present 2/2-way Pneumatic valve.
Chinese patent " bi-bit bi-pass Pneumatic valve " (ZL98221629.7) has been described a kind of follow-on 2/2-way Pneumatic valve, its structure is similar substantially to Fig. 2 (A), Fig. 2 (B), this 2/2-way Pneumatic valve main feature is that the piston in the valve body is a hollow shape, Returnning spring is installed in central space, valve body top is connected with valve gap, to valve body a control air flue is arranged through valve gap from the top of piston hollow part, valve body is provided with two valve ports that interconnect.The 2/2-way Pneumatic valve of this structure is because valve body import and valve core axis vertical, so, exist spool to be subjected to the radial force effect equally, cause spool easy to wear, and then the working life of shortening 2/2-way Pneumatic valve.In addition, this 2/2-way Pneumatic valve exists equally also that part is many, complex structure, shortcoming that boundary dimension is big and heavy, that cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of long service life, good reliability, simple in structure, volume is little, in light weight, 2/2-way Pneumatic valve that cost is low.
The present invention is achieved through the following technical solutions.
A kind of 2/2-way Pneumatic valve comprises valve body, spool and piston, and a cavity is set in the valve body, and spool places in the valve body cavity, and an end of cavity is a filler opening, and the other end is an oil outlet, also is provided with a control signal mouth on the cavity post jamb; Piston links to each other with spool and slides in the valve body cavity, be provided with sealing configuration between spool and valve body, it in the spool hollow columnar cavity of an end opening, the post jamb at hollow columnar cavity and filler opening abutting end place is provided with the spool cross-drilled hole, it is characterized in that: valve body is coaxial with spool hollow columnar cavity shaft axis into and out of hydraulic fluid port, and the opening end of hollow columnar cavity and valve body oil outlet join.
Described spool cross-drilled hole is evenly distributed on the post jamb of spool hollow columnar cavity.
Described spool and filler opening abutting end place are provided with positioning block, and for being slidingly matched, positioning block is fixed on the valve body between spool and the positioning block.
Described spool is to be arranged on positioning block to cooperate or the elastic element sealing configuration with the conical surface seal of spool one end with sealing configuration between valve body.
Described piston is positioned at the middle part of spool, and piston is separated into two cavitys with the cavity between valve body, spool and positioning block, and a cavity communicates with the control signal mouth, and another cavity can communicate with the spool cross-drilled hole.
The post jamb of described spool hollow columnar cavity is provided with cushion hole.
Be provided with circular groove between described spool and valve body and piston and valve body.
Be provided with seal element between described spool and valve body and piston and valve body.
One end of described spool can be provided with Returnning spring.
Be provided with guiding element between described spool lower end and valve body.
The present invention compared with prior art has the following advantages.
Because the filler opening of valve body is coaxial with spool hollow columnar cavity shaft axis in the 2/2-way Pneumatic valve of the present invention, lubricant oil does not have the radial force effect to valve body when filler opening enters.Then, lubricant oil enters in the spool through the spool cross-drilled hole because the spool cross-drilled hole is evenly distributed on the post jamb of spool hollow columnar cavity, so lubricant oil act on radial force on the spool to make a concerted effort be zero.When lubricant oil flows out from the valve body oil outlet,, therefore, can not produce the radial force effect to spool because oil outlet is coaxial with spool hollow columnar cavity shaft axis yet.Because whole spool can not be subjected to the radial force effect, thus spool be not easy to be worn and to block, thereby improved the working life and the reliability of spool.Cushion hole on the spool hollow columnar cavity post jamb has two effects: the one, when piston will move to range, cushion hole be positioned the interior circle of piece stifled on, gas between piston and the positioning block forms back pressure, and piston is played buffer function, avoids piston that positioning block is produced bump; The 2nd, when piston moved down, cushion hole was convenient to piston and is in time moved down replenishing source of the gas in the closed chamber.The circular groove that is provided with between spool and valve body and piston and valve body plays the effect of sealing and storage impurity.Valve body can be directly installed on the compressor, has saved supporting base or pipeline, install needed coupling with and inner number of spare parts few, so, can obviously reduce volume, weight reduction, simplified structure, raising reliability, reduce cost.In addition, lubricant oil directly enters in the compressor after spool flows out, and its flow process is short, it is smooth and easy to flow, the pressure loss is little.
Description of drawings
Fig. 1 (A) is existing wherein a kind of 2/2-way Pneumatic valve closed condition structural representation;
Fig. 1 (B) is existing wherein a kind of 2/2-way Pneumatic valve open mode structural representation;
Fig. 2 (A) is existing wherein another kind of 2/2-way Pneumatic valve closed condition structural representation;
Fig. 2 (B) is existing wherein another kind of 2/2-way Pneumatic valve open mode structural representation;
Fig. 3 (A) is a 2/2-way Pneumatic valve closed condition structural representation of the present invention;
Fig. 3 (B) is a 2/2-way Pneumatic valve open mode structural representation of the present invention;
Fig. 4 is another structural representation of 2/2-way Pneumatic valve of the present invention.
Embodiment
Below in conjunction with accompanying drawing 2/2-way Pneumatic valve of the present invention is described in further detail.
Shown in Fig. 3 (A), Fig. 3 (B), the 2/2-way Pneumatic valve mainly is made up of with positioning block 6 valve body 1, spool 2, piston 3, valve body 1 is a cylinder structure, in the valve body 1 is stepped cylindrical cavity, positioning block 6 and piston 3 are positioned at the top of cylindrical cavity, and the bottom of cylindrical cavity and spool 2 are slidingly matched, and the upper end of cylindrical cavity is filler opening a, the lower end is oil outlet b, is provided with control signal mouth c near middle post jamb.Spool 2 is a cylindrical structure, it in the spool 2 the hollow cylindrical cavity of an end opening, spool 2 upper ends are provided with inverted cone surface, and near several spool cross-drilled holes d that evenly distributes on the cavity post jamb at inverted cone surface place, the post jamb below the spool cross-drilled hole d is provided with a plurality of cushion hole f.After spool 2 placed the valve body cylindrical cavity, valve body was coaxial with spool hollow columnar cavity shaft axis into and out of hydraulic fluid port a, b, and the opening end of spool 2 inner hollowshape cylindrical cavities and valve body oil outlet b join, and spool upper end spool cross-drilled hole d and valve body filler opening a join.Positioning block 6 is fixed on the cylindrical cavity post jamb of valve body 1, and the endoporus of positioning block 6 is the cylindrical cavity that is slidingly matched with spool 2, and cylindrical cavity has increased the guiding stroke of spool 2, and positioning block 6 tops are provided with another conical surface that is sealed and matched with spool 2 inverted cone surfaces.Piston 3 almost fixed are at the middle part of spool 2, and piston 3 is separated into two cavitys with the cavity of 6 of valve body 1, spool 2 and positioning blocks, and a cavity communicates with control signal mouth c, and another cavity can communicate with spool cross-drilled hole d, and piston 3 is slidingly matched with the valve body cylindrical cavity.Under the not high condition of seal request, with fitted seal between little crack or employing circular groove, circular groove plays sealing and stores the effect of impurity between piston 3, spool 2 and the body cavity.Under the high condition of seal request, seal element 7 is installed between piston 3, spool 2 and body cavity, because seal element 7 has increased the frictional force between piston 3, spool 2 and the body cavity, therefore a Returnning spring can be set in the upper end of spool 2.Form the working principle that structure is described 2/2-way Pneumatic valve of the present invention in detail below in conjunction with it: after gas compressor starts, compressed gas enters in control signal mouth c, promote piston 3 and drive spool 2 up to move, thereby open passage to the gas compressor fuel feeding, at this moment, lubricant oil enters from valve body filler opening a, and enter in the hollow columnar cavity in the spool 2 by the spool cross-drilled hole d on the spool 2, flow out from valve body oil outlet b then, provide lubricant oil to gas compressor; After gas compressor is shut down; stop simultaneously sending into pressurized gas to control signal mouth c; the lower end of piston 3 loses the supporting of pressurized gas; spool 2 is under the pressure effect of self gravitation and lubricant oil, and spool 2 all moves down with piston 3, after moving to certain position; because spool 2 cooperates with conical surface seal between the valve body 1; the filler opening a and the oil outlet b of valve body are separated, stop to wait for the beginning of next work cycle to the main frame fuel feeding.
The another kind of structure of 2/2-way Pneumatic valve of the present invention is made of one positioning block 6 and valve body 1 as shown in Figure 4, and the targeting part of valve body 1 lower end independently becomes a guiding element 8, can reach same effect.
2/2-way Pneumatic valve of the present invention plays an important role in gas compressor; certainly also can be used as the Air control valve in the mechanical fields such as medicine, food, carpenter, all in these applications, adopt 2/2-way Pneumatic valve of the present invention as control unit all in protection scope of the present invention.
Claims (10)
1, a kind of 2/2-way Pneumatic valve comprises valve body, spool and piston, and a cavity is set in the valve body, and spool places in the valve body cavity, and an end of cavity is a filler opening, and the other end is an oil outlet, also is provided with a control signal mouth on the cavity post jamb; Piston links to each other with spool and slides in the valve body cavity, be provided with sealing configuration between spool and valve body, it in the spool hollow columnar cavity of an end opening, the post jamb at hollow columnar cavity and filler opening abutting end place is provided with the spool cross-drilled hole, it is characterized in that: valve body is coaxial with spool hollow columnar cavity shaft core line into and out of hydraulic fluid port, and the opening end of hollow columnar cavity and valve body oil outlet join.
2,2/2-way Pneumatic valve according to claim 1 is characterized in that: described spool cross-drilled hole is evenly distributed on the post jamb of spool hollow columnar cavity.
3,2/2-way Pneumatic valve according to claim 1 is characterized in that: described spool and filler opening abutting end place are provided with positioning block, and for being slidingly matched, positioning block is fixed on the valve body between spool and the positioning block.
4,2/2-way Pneumatic valve according to claim 3 is characterized in that: described spool is to be arranged on positioning block to cooperate or the elastic element sealing configuration with the conical surface seal of spool one end with sealing configuration between valve body.
5,2/2-way Pneumatic valve according to claim 1, it is characterized in that: described piston is positioned at the middle part of spool, piston is separated into two cavitys with the cavity between valve body, spool and positioning block, and a cavity communicates with the control signal mouth, and another cavity can communicate with the spool cross-drilled hole.
6,2/2-way Pneumatic valve according to claim 1 is characterized in that: the post jamb of described spool hollow columnar cavity is provided with cushion hole.
7,2/2-way Pneumatic valve according to claim 1 is characterized in that: be provided with circular groove between described spool and valve body and piston and valve body.
8,2/2-way Pneumatic valve according to claim 1 is characterized in that: be provided with seal element between described spool and valve body and piston and valve body.
9,2/2-way Pneumatic valve according to claim 1 is characterized in that: an end of described spool can be provided with Returnning spring.
10,2/2-way Pneumatic valve according to claim 1 is characterized in that: be provided with guiding element between described spool lower end and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100279887A CN100402904C (en) | 2004-07-05 | 2004-07-05 | Two-position two-way pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100279887A CN100402904C (en) | 2004-07-05 | 2004-07-05 | Two-position two-way pneumatic control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721749A true CN1721749A (en) | 2006-01-18 |
| CN100402904C CN100402904C (en) | 2008-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100279887A Expired - Fee Related CN100402904C (en) | 2004-07-05 | 2004-07-05 | Two-position two-way pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100402904C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200109A (en) * | 2010-03-23 | 2011-09-28 | 上海宝勒特压缩机有限公司 | Bypass check valve of air intake valve for air compressor |
| CN104421434B (en) * | 2013-08-30 | 2016-12-28 | 浙江佑安高科消防***有限公司 | Tube sealing reducing valve |
| CN109442047A (en) * | 2018-12-19 | 2019-03-08 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2080604U (en) * | 1990-09-29 | 1991-07-10 | 李立夫 | Static pressure reducing valve |
| IT228445Y1 (en) * | 1992-04-14 | 1998-02-19 | Omal Di Bonomi A & C Sas | FRONT VALVE WITH PNEUMATIC CONTROL |
| CN2192780Y (en) * | 1994-06-13 | 1995-03-22 | 北京海淀普惠机电技术开发公司 | Extension tube check valve |
| CN2223392Y (en) * | 1995-01-23 | 1996-03-27 | 王登锐 | Internal driving on-off quantity control valve |
| CN2721993Y (en) * | 2004-07-05 | 2005-08-31 | 查谦 | Two position gas controlling valve |
-
2004
- 2004-07-05 CN CNB2004100279887A patent/CN100402904C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200109A (en) * | 2010-03-23 | 2011-09-28 | 上海宝勒特压缩机有限公司 | Bypass check valve of air intake valve for air compressor |
| CN104421434B (en) * | 2013-08-30 | 2016-12-28 | 浙江佑安高科消防***有限公司 | Tube sealing reducing valve |
| CN109442047A (en) * | 2018-12-19 | 2019-03-08 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
| CN109442047B (en) * | 2018-12-19 | 2023-12-19 | 重庆红江机械有限责任公司 | Fuel gas control stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100402904C (en) | 2008-07-16 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG ZHENGLI PRECISION MACHINERY CO., LTD. Free format text: FORMER OWNER: ZHA QIAN; APPLICANT Effective date: 20080215 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20080215 Address after: Postal code 10, Alex Hua Tian Road, Shunde hi tech Zone (Ronggui), Guangdong, Foshan: 528306 Applicant after: Guangdong Ganey Precision Machinery Co., Ltd. Address before: 11, tea tree road, Ronggui, Shunde District, Guangdong, Foshan Province, China: 528305 Applicant before: Zha Qian Co-applicant before: Cha Shiliang Co-applicant before: Chen Weicheng |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 change Contract record no.: 2009990001145 Denomination of invention: Two-position two-way pneumatic control valve Granted publication date: 20080716 License type: Exclusive license Record date: 20091014 |
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| 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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080716 Termination date: 20150705 |
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| EXPY | Termination of patent right or utility model |