CN103453176B - The side valve type 3-position 4-way of a kind of pneumatic control controls valve - Google Patents
The side valve type 3-position 4-way of a kind of pneumatic control controls valve Download PDFInfo
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- CN103453176B CN103453176B CN201310326583.2A CN201310326583A CN103453176B CN 103453176 B CN103453176 B CN 103453176B CN 201310326583 A CN201310326583 A CN 201310326583A CN 103453176 B CN103453176 B CN 103453176B
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Abstract
The invention discloses the side valve type 3-position 4-way of a kind of pneumatic control and control valve, include valve body, valve body structure is slide-valve structure, through hole is set in valve body and spool is installed, valve body and spool, by multiple O type rubber seal rings for seals, arrange air inlet P, working hole A, working hole B, air vent R on valve body; Install in valve body and four undercut grooves are set in the through hole of spool, four undercut groove positions corresponding air inlet P, working hole A, working hole B, air vent R respectively, it is respectively provided with spring base at spool two ends and compression spring is installed. The present invention utilizes cylinder and compression spring controlled valve core position in valve body, realize inflating while working hole A and working hole B, close simultaneously, slide-valve structure is used to reduce the pressure oscillation that piston action causes, use pneumatic control simultaneously, gas is conducted heat by the heat avoiding the solenoid generation worked long hours, and effectively raises the accuracy of detection of the airtight leak detector of differential pressure type.
Description
Technical field
The present invention relates to the control valve of a kind of airtight leak detector being applicable to and utilizing gas differential pressure to carry out Leak Detection. At industrial circle, airtight leak detector is applied to whether inspection product meets the place of leakage specification. Judge whether workpiece exists leakage, it is necessary to workpiece to be checked and standard workpiece are filled with compression air simultaneously, after pressurize certain time, it is judged that the pressure differential of workpiece to be checked and standard workpiece is so that it is determined that whether the leakage of workpiece to be checked meets leakage specification. In order to be effectively ensured the air pressure environment of workpiece to be checked and standard workpiece, it is necessary to avoid the pressure influence that the action difference of charge valve causes as far as possible. The present invention proposes the 3-position 4-way control valve of a kind of side valve type pneumatic control and avoids the Direct Action Type control valve impact on air pressure fluctuation, avoid the solenoid heating impact on gas temperature change simultaneously, airtight leak detection requirement be can effectively realize, detection performance and the precision of the airtight leak detector of differential pressure type improved.
Background technology
The airtight leak detector of differential pressure type is the device whether leakage of a kind of on-line checking workpiece meets leakage specification, is usually used in the online Leak Detection in the fields such as radiator, car light, compressor, valve, cleaner, water pump, oil pump and vehicle bridge. For former wet type detection method, the airtight leak detector of differential pressure type will not missing inspection, it is not required that dry, moreover it is possible to realize automatization, the advantage improving work efficiency. Its principle is that workpiece to be checked and standard workpiece are filled with the compression air of certain pressure simultaneously, pressurize a period of time under same environment, owing to the leakage of measured object can cause pressure to decline, thus with standard workpiece generation differential pressure, differential pressure value carries out data process after being detected by differential pressure pick-up, thus showing whether measured workpiece meets leakage specification.
But the accuracy of detection of the airtight leak detector of differential pressure type is subject to temperature, workpiece volume, and stream pressure fluctuates, the impact of the many factors such as dwell time.If the pressure error caused due to the action error etc. of valve can be reduced just can improve the accuracy of detection of the airtight leak detector of differential pressure type as far as possible.
Summary of the invention
The present invention proposes the side valve type 3-position 4-way of a kind of pneumatic control and controls valve, can effectively be balanced the air pressure of workpiece to be checked and two cavitys of standard workpiece by this control valve, reduces detection error.
The technical solution used in the present invention is:
The side valve type 3-position 4-way of a kind of pneumatic control controls valve, it is characterized in that: include valve body 3, described valve body structure is slide-valve structure, through hole is set in valve body 3 and spool 2 is installed, valve body 3 and spool 2 are sealed by multiple O type rubber seal 1, arrange air inlet P, working hole A, working hole B, air vent R on valve body 3; Install in valve body 3 in the through hole of spool 2 and four undercut grooves 12 are set, four undercut groove 12 positions corresponding air inlet P, working hole A, working hole B, air vent R respectively, it is respectively provided with spring base at spool 2 two ends and compression spring 4,10 is installed; The action of valve is pneumatic control, it is provided with screwed hole at valve body 3 two ends and is fixedly connected with left end cylinder 6, right-hand member cylinder 9, seal with sealing ring 5 between left end cylinder 6, right-hand member cylinder 9 and valve body 3, left end cylinder 6, right-hand member cylinder 9 plunger shaft in be separately installed with piston 7,11, seal by O type rubber seal 8 between piston 7 and left end cylinder 6, piston 11 and right-hand member cylinder 9; Piston 7,11 is press respectively against on compression spring 4,10.
The operation principle of the present invention is:
When the inflation inlet P1 of left end cylinder 6 inflates, and during the inflation inlet P2 aerofluxus of right-hand member cylinder 9, piston 7 moves right, compression spring 4 moves right, making spool 2 move right, compress spring 10 forced compression, piston 11 moves right, air inlet P and working hole A, working hole B are connected, and working hole A and working hole B are inflated simultaneously; When inflation inlet P2 all aerofluxuss of the inflation inlet P1 of left end cylinder 6 and right-hand member cylinder 9, compression spring 10 is upheld and is acted on spool 2, makes spool return to middle position, and air inlet P, working hole A, working hole B and air vent R are all not attached to lead to; When the inflation inlet P2 of right-hand member cylinder 9 inflates, and during the inflation inlet P1 aerofluxus of left end cylinder 6, piston 11 is moved to the left, compression spring 10 is moved to the left, and makes spool 2 be moved to the left, and compresses spring 4 forced compression, piston 7 is moved to the left, air vent R and working hole A, working hole B is connected, simultaneously to working hole A and working hole B aerofluxus.
The invention have the advantage that
The present invention utilizes cylinder and compression spring controlled valve core position in valve body, realize inflating while working hole A and working hole B, close simultaneously, slide-valve structure is used to reduce the pressure oscillation that piston action causes, use pneumatic control simultaneously, gas is conducted heat by the heat avoiding the solenoid generation worked long hours, and effectively raises the accuracy of detection of the airtight leak detector of differential pressure type.
Accompanying drawing illustrates:
Fig. 1 is the functional symbol schematic diagram of the present invention.
Fig. 2 is the structural principle schematic diagram of the present invention.
Detailed description of the invention:
Fig. 1 is the functional symbol of the present invention. The present invention is that 3-position 4-way controls valve, is that working hole A and working hole B is inflated by air inlet P simultaneously during the work of left position; Middle position is that working hole A and working hole B closes simultaneously, enters packing state; It it is working hole A and working hole B aerofluxus simultaneously during the work of right position.
Fig. 2 is the structural principle schematic diagram of the present invention. Below in conjunction with accompanying drawing, the invention will be further described.
As shown in drawings, the side valve type 3-position 4-way of a kind of pneumatic control controls valve, include valve body 3, valve body structure is slide-valve structure, through hole is set in valve body 3 and spool 2 is installed, valve body 3 and spool 2 are sealed by multiple O type rubber seal 1, arrange air inlet P, working hole A, working hole B, air vent R on valve body 3;Install in valve body 3 in the through hole of spool 2 and four undercut grooves 12 are set, four undercut groove 12 positions corresponding air inlet P, working hole A, working hole B, air vent R respectively, it is respectively provided with spring base at spool 2 two ends and compression spring 4,10 is installed; The action of valve is pneumatic control, it is provided with screwed hole at valve body 3 two ends and is fixedly connected with left end cylinder 6, right-hand member cylinder 9, seal with sealing ring 5 between left end cylinder 6, right-hand member cylinder 9 and valve body 3, left end cylinder 6, right-hand member cylinder 9 plunger shaft in be separately installed with piston 7,11, seal by O type rubber seal 8 between piston 7 and left end cylinder 6, piston 11 and right-hand member cylinder 9; Piston 7,11 is press respectively against on compression spring 4,10.
Judge whether workpiece exists leakage, it is necessary to workpiece to be checked and standard workpiece are filled with compression air simultaneously, after pressurize certain time, it is judged that the pressure differential of workpiece to be checked and standard workpiece is so that it is determined that whether the leakage of workpiece to be checked meets leakage specification. In order to be effectively ensured the air pressure environment of workpiece to be checked and standard workpiece, it is necessary to avoid the pressure influence that the action difference of charge valve causes as far as possible. The present invention proposes the 3-position 4-way control valve of a kind of side valve type pneumatic control and avoids the Direct Action Type control valve impact on air pressure fluctuation, avoid the solenoid heating impact on gas temperature change simultaneously, airtight leak detection requirement be can effectively realize, detection performance and the precision of the airtight leak detector of differential pressure type improved.
Claims (1)
1. the side valve type 3-position 4-way of a pneumatic control controls valve, it is characterized in that: include valve body (3), described valve body structure is slide-valve structure, through hole is set in valve body (3) and spool (2) is installed, valve body (3) and spool (2) are sealed by multiple O type rubber seal (1), arrange air inlet P, working hole A, working hole B, air vent R on valve body (3); Install in valve body (3) in the through hole of spool (2) and four undercut grooves (12) are set, four undercut groove (12) positions corresponding air inlet P, working hole A, working hole B, air vent R respectively, be respectively provided with spring base and install the first compression spring (4), the second compression spring (10) at spool (2) two ends; The action of valve is pneumatic control, it is respectively arranged with screwed hole at valve body (3) two ends and is fixedly connected with left end cylinder (6), right-hand member cylinder (9), seal with sealing ring (5) between left end cylinder (6), right-hand member cylinder (9) and valve body (3), left end cylinder (6), right-hand member cylinder (9) plunger shaft in be separately installed with first piston (7), the second piston (11), be used that O type rubber seal (8) seals between first piston (7) and left end cylinder (6), the second piston (11) and right-hand member cylinder (9); First piston (7), the second piston (11) are press respectively against in the first compression spring (4), the second compression spring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326583.2A CN103453176B (en) | 2013-07-31 | 2013-07-31 | The side valve type 3-position 4-way of a kind of pneumatic control controls valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326583.2A CN103453176B (en) | 2013-07-31 | 2013-07-31 | The side valve type 3-position 4-way of a kind of pneumatic control controls valve |
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| Publication Number | Publication Date |
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| CN103453176A CN103453176A (en) | 2013-12-18 |
| CN103453176B true CN103453176B (en) | 2016-06-08 |
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| CN201310326583.2A Active CN103453176B (en) | 2013-07-31 | 2013-07-31 | The side valve type 3-position 4-way of a kind of pneumatic control controls valve |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018513380A (en) * | 2015-04-20 | 2018-05-24 | ネクスマティクス・エル・エル・シー | System and method for leak detection using directional control valves |
| JP6278317B2 (en) * | 2015-05-08 | 2018-02-14 | Smc株式会社 | Channel switching unit |
| CN106438519B (en) * | 2016-09-07 | 2018-05-29 | 上海空间推进研究所 | Lightweight supercharging device containing Energy Recovery Technology |
| CN110067928A (en) * | 2018-01-24 | 2019-07-30 | 浙江胜祥机械有限公司 | A kind of Pneumatic adjustable proportional valve, quantitatively valve group and control method |
| CN108518376B (en) * | 2018-05-18 | 2019-12-27 | 江苏南京白马现代农业高新技术产业园有限公司 | Automatic reversing valve |
| CN109340442A (en) * | 2018-11-28 | 2019-02-15 | 江苏江林机械有限公司 | A kind of pneumatic reset bi-bit bi-pass mechanical valve |
| CN111521351B (en) * | 2020-06-07 | 2022-03-11 | 沈阳金科精密仪器设备有限公司 | Differential pressure type detector |
| CN114673916B (en) * | 2022-03-17 | 2023-03-24 | 芜湖钻石航空发动机有限公司 | Pressure limiting valve of aircraft engine oil pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153049A (en) * | 1984-01-20 | 1985-08-14 | Ross Operating Valve Co | Proportional air valve and method of providing air flow |
| CN201487299U (en) * | 2009-08-07 | 2010-05-26 | 陈建杰 | two-position five-way electromagnetic valve |
| CN202017792U (en) * | 2011-04-28 | 2011-10-26 | 浙江欧瑞泰汽配有限公司 | Pneumatic reversal valve for automobile gearbox |
| CN102364179A (en) * | 2011-11-04 | 2012-02-29 | 张家庆 | Ultrahigh-pressure three-position four-way electromagnetic reversing valve |
| GB2494902A (en) * | 2011-09-23 | 2013-03-27 | Parker Hannifin Mfg Ltd | Pressure compensating valve |
-
2013
- 2013-07-31 CN CN201310326583.2A patent/CN103453176B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153049A (en) * | 1984-01-20 | 1985-08-14 | Ross Operating Valve Co | Proportional air valve and method of providing air flow |
| CN201487299U (en) * | 2009-08-07 | 2010-05-26 | 陈建杰 | two-position five-way electromagnetic valve |
| CN202017792U (en) * | 2011-04-28 | 2011-10-26 | 浙江欧瑞泰汽配有限公司 | Pneumatic reversal valve for automobile gearbox |
| GB2494902A (en) * | 2011-09-23 | 2013-03-27 | Parker Hannifin Mfg Ltd | Pressure compensating valve |
| CN102364179A (en) * | 2011-11-04 | 2012-02-29 | 张家庆 | Ultrahigh-pressure three-position four-way electromagnetic reversing valve |
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| CN103453176A (en) | 2013-12-18 |
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