CN103470781B - Floating valve seat balanced type high temperature regulates block valve - Google Patents
Floating valve seat balanced type high temperature regulates block valve Download PDFInfo
- Publication number
- CN103470781B CN103470781B CN201310432434.4A CN201310432434A CN103470781B CN 103470781 B CN103470781 B CN 103470781B CN 201310432434 A CN201310432434 A CN 201310432434A CN 103470781 B CN103470781 B CN 103470781B
- Authority
- CN
- China
- Prior art keywords
- spool
- valve seat
- valve
- floating
- sealing surface
- 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.)
- Active
Links
Landscapes
- Sliding Valves (AREA)
Abstract
The invention provides a kind of floating valve seat balanced type high temperature and regulate block valve, comprise floating valve seat and valve rod on valve body, valve seat, spool, sleeve, spool, spool is arranged in valve body, position in valve body between water intake and water outlet is provided with valve seat, valve seat is fixed in valve body by sleeve, and the end of valve rod is connected with spool; The upper-end surface of spool has been connected by screw a spool cover plate, and the side of spool is provided with an annular breach, and on described spool, floating valve seat is set on described annular breach; Floating valve seat on spool, between spool and spool cover plate, form the annular groove that a cross section is rectangle; Be provided with an alloy graphite compound gasket and a spring in described annular groove, one end of spring abuts with spool cover plate elasticity, and the other end abuts with alloy graphite compound gasket elasticity, and described spool cover plate and spool leave gap between floating valve seat.The present invention can seal by two sealing pairs completely simultaneously, and sealing effect is better, and bearing temperature is high.
Description
Technical field
The invention belongs to valve field, be specifically related to a kind of floating valve seat balanced type high temperature and regulate block valve.
Background technique
Straight travel regulating valve is divided into flat horizontal type and uneven formula, and balanced type modulating valve only has a sealing surface, and unbalanced force is large, is applicable to the operating mode that shut off differential pressure is smaller; There is equalizing orifice in the spool of uneven formula modulating valve, can a part of pressure be offset, need actuator smaller, be applicable to the occasion that pressure reduction is large.Uneven formula modulating valve is divided into again balanced type sleeve single-seat adjusting valve and balanced type sleeve regulating valve of two-seater, and balanced type sleeve single-seat adjusting valve has a metal-seated and a tetrafluoroethylene soft seal, good sealing effect, but bearing temperature is low; Balanced type sleeve regulating valve of two-seater has two metal-seateds, and be difficult to reach two sealings and seal completely simultaneously, bearing temperature is high.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, provide the high floating valve seat balanced type high temperature of a kind of good sealing effect, bearing temperature and regulate block valve.
The present invention is achieved through the following technical solutions:
A kind of floating valve seat balanced type high temperature regulates block valve, comprise floating valve seat and valve rod on valve body, valve seat, spool, sleeve, spool, spool is arranged in valve body, position in described valve body between water intake and water outlet is provided with valve seat, spool can folding be arranged on valve seat, spool is provided with the first lower sealing surface with the cooperation place of valve seat, valve seat is provided with the second lower sealing surface with the cooperation place of spool; Described valve seat is fixed in valve body by sleeve, and the end of described valve rod is connected with spool, for driving valve core movement; The upper-end surface of described spool has been connected by screw a spool cover plate, and the side of described spool is provided with an annular breach, and on described spool, floating valve seat is set on described annular breach; Floating valve seat on spool, between spool and spool cover plate, form the annular groove that a cross section is rectangle; Be provided with an alloy graphite compound gasket and a spring in described annular groove, one end of described spring abuts with spool cover plate elasticity, and the other end abuts with alloy graphite compound gasket elasticity, and described spool cover plate and spool leave gap between floating valve seat; Floating valve seat is provided with sealing surface on first with the cooperation place of sleeve to spool, sleeve is provided with sealing surface on second with the cooperation place of floating valve seat on spool;
Distance on described first between sealing surface and the first lower sealing surface is less than the distance on second between sealing surface and the second lower sealing surface.
The further setting of the present invention is, the outer race of described valve rod is provided with bellows.
The further setting of the present invention is, the periphery of described bellows is provided with middle valve gap, and described middle valve gap one end and bonnet are fastenedly connected, and the other end and valve body are fastenedly connected.
The further setting of the present invention is, the periphery of described bonnet inner valve stem is provided with stuffing box.
The further setting of the present invention is, described sleeve and spool all adopt alloy material to make.
Floating valve seat balanced type high temperature of the present invention regulates on upper and lower two sealing surfaces of block valve sleeve and spool exists a height difference between two sealing surfaces, in valve closing process, after upper sealing pair first contacts sealing, spool continues to move downward, initial tension of spring increases simultaneously, the gap of spool cover plate and sealing seat diminishes, so that lower seal parafacies combines.Now spring-compressed is maximum, and the power being namely applied to sealing is also maximum.Seal pressure can be made to be greater than design specific pressure by design, be less than specific pressure allowable, can reach cutting action, spool, in the process of closing and rise, constantly changes the area of scarfing on sleeve, so that reach the effect of adjust flux and pressure.This floating valve seat balanced type high temperature regulates block valve to seal by two sealing pairs completely simultaneously, and sealing effect is better, and bearing temperature is high.
Accompanying drawing explanation
Fig. 1 is the structural drawing that floating valve seat balanced type high temperature of the present invention regulates block valve;
Fig. 2 is the I district enlarged view of Fig. 1;
Fig. 3 is the structural drawing of upper sealing pair when first sealing;
Fig. 4 is the structural drawing of upper-lower seal pair when all sealing;
In figure: floating valve seat 14 on valve body 1, valve seat 2, spool 3, sleeve 4, middle valve gap 5, valve rod 6, bellows 7, bonnet 8, stuffing box 9, screw 10, spool cover plate 11, spring 12, alloy graphite compound gasket 13, spool.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-4, the invention provides a kind of floating valve seat balanced type high temperature and regulate block valve, comprise floating valve seat 14 and valve rod 6 on valve body 1, valve seat 2, spool 3, sleeve 4, spool, spool 3 is arranged in valve body 1, position in described valve body 1 between water intake and water outlet is provided with valve seat 2, spool 3 can folding be arranged on valve seat 2, spool 3 is provided with the first lower sealing surface with the cooperation place of valve seat 2, valve seat 2 is provided with the second lower sealing surface with the cooperation place of spool 3; It is secondary that first lower sealing surface and the second lower sealing surface form lower seal.
Described valve seat 2 is fixed in valve body 1 by sleeve 4, and the end of described valve rod 6 is connected with spool 3, moves for driving spool 3; The upper-end surface of described spool 3 is connected with a spool cover plate 11 by screw 10, and the side of described spool 3 is provided with an annular breach, and on described spool, floating valve seat 14 is set on described annular breach; Floating valve seat 14 on spool, between spool 3 and spool cover plate 11, form the annular groove that a cross section is rectangle; Alloy graphite compound gasket 13 and a spring 12 is provided with in described annular groove, one end of described spring 12 abuts with spool cover plate 11 elasticity, the other end abuts with alloy graphite compound gasket 13 elasticity, and described spool cover plate 11 and spool leave gap between floating valve seat 14; Floating valve seat 14 is provided with sealing surface on first with the cooperation place of sleeve 4 to spool, sleeve 4 is provided with sealing surface on second with the cooperation place of floating valve seat on spool 14; On first, on sealing surface and second, sealing surface forms sealing pair.
Distance on described first between sealing surface and the first lower sealing surface is less than the distance on second between sealing surface and the second lower sealing surface.
Preferably, the outer race of described valve rod 6 is provided with bellows 7, and the periphery of described bellows 7 is provided with middle valve gap 5, and described middle valve gap 5 one end and bonnet 8 are fastenedly connected, and the other end and valve body 1 are fastenedly connected.The periphery of described bonnet 8 inner valve stem 6 is provided with stuffing box 9.Sylphon seal and filler double seal can be realized like this, leak outside so that valve does not exist filler, improve life of valve.
Preferably, described sleeve 4 and spool 3 all adopt alloy material to make, and so can improve sherardizing steel and the abrasive wear of valve, greatly improve the working life of valve.
Working principle of the present invention is:
Because the distance on first between sealing surface and the first lower sealing surface is less than the distance on second between sealing surface and the second lower sealing surface, therefore in valve closing process, after upper sealing pair first contacts sealing, spool 3 continues to move downward, the pretightening force of spring 12 increases simultaneously, spool cover plate 11 diminishes with the gap of floating valve seat 14 on spool, so that lower seal parafacies combines, so realizes the excellent sealing of upper and lower two sealing pairs.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.All like this to the apparent amendment of the technician in described field, by be included in this claim scope within.
Claims (1)
1. a floating valve seat balanced type high temperature regulates block valve, it is characterized in that, comprise valve body (1), valve seat (2), spool (3), sleeve (4), floating valve seat (14) and valve rod (6) on spool, spool (3) is arranged in valve body (1), position in described valve body (1) between water intake and water outlet is provided with valve seat (2), spool (3) can folding be arranged on valve seat (2), spool (3) cooperation place that is upper and valve seat (2) is provided with the first lower sealing surface, valve seat (2) cooperation place that is upper and spool (3) is provided with the second lower sealing surface, described valve seat (2) is fixed in valve body (1) by sleeve (4), and the end of described valve rod (6) is connected with spool (3), moves for driving spool (3), the upper-end surface of described spool (3) is connected with a spool cover plate (11) by screw (10), the side of described spool (3) is provided with an annular breach, and on described spool, floating valve seat (14) is set on described annular breach, floating valve seat (14) on spool, between spool (3) and spool cover plate (11), form the annular groove that a cross section is rectangle, an alloy graphite compound gasket (13) and a spring (12) is provided with in described annular groove, one end of described spring (12) abuts with spool cover plate (11) elasticity, the other end abuts with alloy graphite compound gasket (13) elasticity, and described spool cover plate (11) and spool leave gap between floating valve seat (14), on spool, on floating valve seat (14) and the cooperation place of sleeve (4) is provided with sealing surface on first, and sleeve (4) is gone up and on spool, the cooperation place of floating valve seat (14) is provided with sealing surface on second, distance on described first between sealing surface and the first lower sealing surface is less than the distance on second between sealing surface and the second lower sealing surface,
The outer race of described valve rod (6) is provided with bellows (7); The periphery of described bellows (7) is provided with middle valve gap (5), and described middle valve gap (5) one end and bonnet (8) are fastenedly connected, and the other end and valve body (1) are fastenedly connected; The periphery of described bonnet (8) inner valve stem (6) is provided with stuffing box (9); Described sleeve (4) and spool (3) all adopt alloy material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310432434.4A CN103470781B (en) | 2013-09-22 | 2013-09-22 | Floating valve seat balanced type high temperature regulates block valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310432434.4A CN103470781B (en) | 2013-09-22 | 2013-09-22 | Floating valve seat balanced type high temperature regulates block valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470781A CN103470781A (en) | 2013-12-25 |
| CN103470781B true CN103470781B (en) | 2015-12-23 |
Family
ID=49795761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310432434.4A Active CN103470781B (en) | 2013-09-22 | 2013-09-22 | Floating valve seat balanced type high temperature regulates block valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470781B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086838U (en) * | 1991-02-25 | 1991-10-16 | 长沙市阀门厂 | Mechanical sealing device of end face for butterfly bamper |
| US6279875B1 (en) * | 2000-01-04 | 2001-08-28 | Vijay R. Chatufale | Gate valve with improved telescoping seat assembly |
| JP2011144861A (en) * | 2010-01-14 | 2011-07-28 | Denso Corp | Ball valve |
| CN201627949U (en) * | 2010-03-26 | 2010-11-10 | 中国石油天然气股份有限公司 | Large-caliber parallel single-gate valve |
| CN202914778U (en) * | 2012-11-22 | 2013-05-01 | 浙江贝尔控制阀门有限公司 | High temperature sleeve adjustment valve |
| CN203500489U (en) * | 2013-09-22 | 2014-03-26 | 浙江贝尔控制阀门有限公司 | Floating valve seat balanced-type high-temperature regulating cutoff valve |
-
2013
- 2013-09-22 CN CN201310432434.4A patent/CN103470781B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470781A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204692633U (en) | A kind of valve and a kind of ring assembly | |
| CN103867736A (en) | Regulating valve | |
| CN203500489U (en) | Floating valve seat balanced-type high-temperature regulating cutoff valve | |
| CN202158200U (en) | Strong corrosion resistant single-seat adjusting valve | |
| CN104676012A (en) | Bilateral balanced sealing ring component for sleeve valve | |
| CN103470781B (en) | Floating valve seat balanced type high temperature regulates block valve | |
| CN201496579U (en) | Valve seat structure used for triple eccentric metal hard sealed butterfly valve | |
| CN204267749U (en) | Bellows spool pipe valve shape valve | |
| CN205190883U (en) | High pressure plate valve | |
| CN204533568U (en) | Split type valve seat self-adjusting seal three eccentric butterfly valve | |
| CN205089998U (en) | Empty sylphon seal self -operated pressure control valve of fidelity | |
| CN203516884U (en) | Regulating valve with high erosion resistance | |
| CN203477332U (en) | Self-sealing stop valve | |
| CN203560492U (en) | Top-entry type low-temperature ball valve | |
| CN203628011U (en) | Out-leakage-preventing self-sealing valve | |
| CN203963088U (en) | Regulate ball valve without leakage flow | |
| CN203730784U (en) | Pneumatic butterfly valve | |
| CN201973260U (en) | Special valve for chlorine gas | |
| CN203421190U (en) | Multi-sealing spherical butterfly valve | |
| CN203131074U (en) | Wedge gate valve | |
| CN205715662U (en) | Graphite metal complex sealing ring | |
| CN201896953U (en) | Axial flow control valve | |
| CN204610847U (en) | The bidirectional balanced ring assembly of telescoping valve | |
| CN203743466U (en) | Slurry valve | |
| CN104048057A (en) | Novel four-eccentric oval sealing face bidirectional pressure butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |