CN102996814A - Control valve with split piston and valve core - Google Patents
Control valve with split piston and valve core Download PDFInfo
- Publication number
- CN102996814A CN102996814A CN2012105247961A CN201210524796A CN102996814A CN 102996814 A CN102996814 A CN 102996814A CN 2012105247961 A CN2012105247961 A CN 2012105247961A CN 201210524796 A CN201210524796 A CN 201210524796A CN 102996814 A CN102996814 A CN 102996814A
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- piston
- spool
- spring
- sleeve
- valve core
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Abstract
The invention relates to a control valve with a split piston and a valve core. The control valve comprises a shell, a piston, a valve core, a sleeve, a spring and a spring fixing assembly, wherein the sleeve is in threaded connection with the shell; a piston cavity is formed between the sleeve and the shell; the piston can move in the piston cavity; a non-sealing end of the valve core extends out of the shell, enters the piston cavity and acts on the end face on the inner side of the piston; the spring fixing assembly is sleeved at the non-sealing end of the valve core; and the spring is positioned between the spring fixing assembly and the shell. The technical problems that the conventional control valve core needs to be subjected to dual guide of the shell and the piston sleeve, the sealing performance of a sealing pair is low, clamping stagnation is easily caused are solved, the influence of the integrated general valve core subjected to the dual guide of the shell and the piston sleeve is avoided, the clamping stagnation possibility of the valve core is reduced, the sealing performance of the metal-metal pair is improved, and the operating reliability of the product is improved.
Description
Technical field
The present invention relates to the control valve of a kind of piston and the split type setting of spool.
Background technique
Oxygen kerosene motor generator control valve (hereinafter to be referred as fuel valve) is responsible for to generator supply kerosene and fire lighter and is cut off kerosene and supply with, the opening and closing of fuel valve directly affect starting and the shutdown of its motor, therefore require fuel valve to have high reliability.
Fuel valve is the Normally closed type pneumatic valve, because working pressure high (48MPa(table)), sealing pair adopts metal-metal structural type, and spool and piston integral type Connecting format (as being threaded), spool need stand housing and the dual guiding of piston sleeve, clamping stagnation appears in sealing pair poor sealing performance easily.
Summary of the invention
Need stand housing and the dual guiding of piston sleeve in order to solve existing control valve spool, the technical problem of clamping stagnation appears in sealing pair poor sealing performance easily, the invention provides the control valve of a kind of piston and the split type setting of spool.
Technical solution of the present invention:
The control valve of a kind of piston and the split type setting of spool, comprise housing, piston, spool, sleeve, spring and spring fixing-assembly, its special way is: described sleeve is threaded with housing, form piston cavity between described sleeve and the housing, described piston can move in piston cavity, the non-tight end of described spool enters piston cavity and acts on the piston inner side end after stretching out housing, described spring fixing-assembly is sleeved on the non-tight end of spool, and described spring is between spring fixing-assembly and housing.
Above-mentioned spring fixing-assembly comprises snap ring, positioning ring and spring seat, described snap ring is positioned at the draw-in groove of spool non-tight end, described positioning ring be sleeved on the spool and with the snap ring clamping, described spring socket sleeve is contained on the positioning ring and with the positioning ring sphere and cooperates, and described spring is between spring seat and housing.
The non-tight end that above-mentioned spool acts on the piston inner side end is sphere.
The present invention's advantage compared with prior art is:
1, adopts the split-type structural of piston and spool, avoided the total spool of integral structure to stand the impact of housing and the dual guiding of piston sleeve, reduced spool clamping stagnation possibility, improved the secondary sealability of metal to metal seal, improved the product work reliability.
2, the spring fixing-assembly adopts snap ring that positioning ring and spool are fixed, utilize positioning ring to cooperate with the sphere of spring seat, compensation assembly process and valve core movement process medi-spring effect deviation, adaptivity is adjusted the coaxality of spool and housing, realizes the flexible motion of spool.
3, an end of spool of the present invention and piston action is sphere, and automatic compensation piston effect deviation has improved the motion credibility of spool to the impact of valve core movement.
Description of drawings
Fig. 1 is the structural representation of the control valve of piston of the present invention and the split type setting of spool;
Fig. 2 is the structural representation of coming away type piston upper spring fixing-assembly among Fig. 1;
Wherein reference character is: 1-spool, 2-housing, 3-piston, 4-sleeve, 5-snap ring, 6-positioning ring, 7-spring seat, 8-spring.
Embodiment
Structural representation such as the control valve of Fig. 1 piston and the split type setting of spool, comprise housing 2, piston 3, spool 1, sleeve 4, spring 8 and spring fixing-assembly, acting on the piston of one end of spool, the spring fixing-assembly is sleeved on the spool, and spring is between spring fixing-assembly and housing.
As shown in Figure 2, the spring fixing-assembly comprises snap ring 5, positioning ring 6 and spring seat 7, and snap ring is positioned at the draw-in groove of spool one end, and positioning ring is sleeved on the spool and with snap ring and is connected, spring socket sleeve is contained on the positioning ring and with the positioning ring sphere and cooperates, and spring is between spring seat and housing.End on the piston of spool effect is sphere.
Adopt spool and piston to throw off Connecting format, avoid spool and piston one to be subject to the impact of cage guiding, reduce spool clamping stagnation possibility, improve functional reliability;
Adopt housing, snap ring, spring seat and positioning ring fixing spring, spool end is that sphere links to each other with piston, realizes that spool is connected with the piston disengagement.
Principle of the present invention: the oxygen kerosene engine fuel valve adopts spool and piston to throw off Connecting format, this coming away type Connecting format reduced in the integral structure piston sleeve guiding to the impact of spool, avoid spool to stand housing and the dual leading role of piston sleeve, reduced spool clamping stagnation possibility, guaranteed the sealing pair sealability, the reliability of improved the fuel valve unlatching, closing.
Although foregoing description and accompanying drawing to present embodiment have represented preferred version of the present invention, but those skilled in the art can carry out variously augmenting, improving and change in the situation that does not depart from the scope that claim defines according to different designing requirements and design parameter, therefore, the present invention is widely.
Claims (3)
1. the control valve of a piston and the split type setting of spool, comprise housing, piston, spool, sleeve, spring and spring fixing-assembly, it is characterized in that: described sleeve is threaded with housing, form piston cavity between described sleeve and the housing, described piston can move in piston cavity, the non-tight end of described spool enters piston cavity and acts on the piston inner side end after stretching out housing, described spring fixing-assembly is sleeved on the non-tight end of spool, and described spring is between spring fixing-assembly and housing.
2. the control valve of piston according to claim 1 and the split type setting of spool, it is characterized in that: described spring fixing-assembly comprises snap ring, positioning ring and spring seat, described snap ring is positioned at the draw-in groove of spool non-tight end, described positioning ring be sleeved on the spool and with the snap ring clamping, described spring socket sleeve is contained on the positioning ring and with the positioning ring sphere and cooperates, and described spring is between spring seat and housing.
3. the control valve of piston according to claim 1 and 2 and the split type setting of spool, it is characterized in that: the non-tight end that described spool acts on the piston inner side end is sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524796.1A CN102996814B (en) | 2012-12-08 | 2012-12-08 | Control valve with split piston and valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210524796.1A CN102996814B (en) | 2012-12-08 | 2012-12-08 | Control valve with split piston and valve core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996814A true CN102996814A (en) | 2013-03-27 |
| CN102996814B CN102996814B (en) | 2015-01-28 |
Family
ID=47925760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210524796.1A Active CN102996814B (en) | 2012-12-08 | 2012-12-08 | Control valve with split piston and valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996814B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165294Y (en) * | 1993-04-21 | 1994-05-18 | 欧阳敏 | Normally closed water-saving valve |
| WO1996015373A1 (en) * | 1994-11-16 | 1996-05-23 | Hydrolux S.A.R.L. | Pilot controlled servo-valve |
| CN1147069A (en) * | 1996-07-19 | 1997-04-09 | 翁锡光 | Automatic combustible gas explosion-proof cut-off |
| US5771931A (en) * | 1996-10-31 | 1998-06-30 | Gilmore Valve Company | High pressure wear resistant pilot valve |
| CN2564754Y (en) * | 2002-08-21 | 2003-08-06 | 北京天地玛珂电液控制系统有限公司 | Hydraulic one-way valve |
| CN202545977U (en) * | 2012-04-13 | 2012-11-21 | 张良寅 | Cold and hot water segregator |
| CN202992187U (en) * | 2012-12-08 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Control valve with split type piston and valve core |
-
2012
- 2012-12-08 CN CN201210524796.1A patent/CN102996814B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2165294Y (en) * | 1993-04-21 | 1994-05-18 | 欧阳敏 | Normally closed water-saving valve |
| WO1996015373A1 (en) * | 1994-11-16 | 1996-05-23 | Hydrolux S.A.R.L. | Pilot controlled servo-valve |
| CN1147069A (en) * | 1996-07-19 | 1997-04-09 | 翁锡光 | Automatic combustible gas explosion-proof cut-off |
| US5771931A (en) * | 1996-10-31 | 1998-06-30 | Gilmore Valve Company | High pressure wear resistant pilot valve |
| CN2564754Y (en) * | 2002-08-21 | 2003-08-06 | 北京天地玛珂电液控制系统有限公司 | Hydraulic one-way valve |
| CN202545977U (en) * | 2012-04-13 | 2012-11-21 | 张良寅 | Cold and hot water segregator |
| CN202992187U (en) * | 2012-12-08 | 2013-06-12 | 中国航天科技集团公司第六研究院第十一研究所 | Control valve with split type piston and valve core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102996814B (en) | 2015-01-28 |
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| C14 | Grant of patent or utility model | ||
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