CN203500489U - Floating valve seat balanced-type high-temperature regulating cutoff valve - Google Patents

Floating valve seat balanced-type high-temperature regulating cutoff valve Download PDF

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Publication number
CN203500489U
CN203500489U CN201320584579.1U CN201320584579U CN203500489U CN 203500489 U CN203500489 U CN 203500489U CN 201320584579 U CN201320584579 U CN 201320584579U CN 203500489 U CN203500489 U CN 203500489U
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CN
China
Prior art keywords
valve
spool
valve seat
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.)
Expired - Fee Related
Application number
CN201320584579.1U
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Chinese (zh)
Inventor
史艳伟
邢忠昌
林峰
舒婷洁
王平红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG BEIER CONTROL VALVE CO Ltd
Original Assignee
ZHEJIANG BEIER CONTROL VALVE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG BEIER CONTROL VALVE CO Ltd filed Critical ZHEJIANG BEIER CONTROL VALVE CO Ltd
Priority to CN201320584579.1U priority Critical patent/CN203500489U/en
Application granted granted Critical
Publication of CN203500489U publication Critical patent/CN203500489U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a floating valve seat balanced-type high-temperature regulating cutoff valve, which comprises a valve body, a valve seat, a valve core, a sleeve, a floating valve seat on the valve core, and a valve rod. The valve core is arranged in the valve body. The valve seat is arranged at a position between a water inlet and a water outlet and in the valve body. The valve seat is fixedly arranged in the valve body through the sleeve. The tail end of the valve rod is connected with the valve core. The upper end surface of the valve core is connected with a valve core cover plate through screws. A ring notch is formed in the side surface of the valve core. The floating valve seat on the valve core is disposed on the ring notch in a sleeved manner. A ring groove with a rectangular section is formed among the floating valve seat on the valve core, the valve core and the valve core cover plate. An alloy-graphite composite gasket and a spring are arranged in the ring groove. One end of the spring is elastically pressed against the valve core cover plate. The other end of the spring is elastically pressed against the alloy-graphite composite gasket. A gap is left between the valve core cover plate and the floating valve seat on the valve core. The floating valve seat balanced-type high-temperature regulating cutoff valve has the advantages that the seal of two sealing pairs can be fully and simultaneously achieved, the sealing effect is better and the bearing temperature is high.

Description

Floating valve seat balanced type high temperature regulates block valve
Technical field
The utility model belongs to valve field, is specifically related to a kind of floating valve seat balanced type high temperature and regulates 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 smaller operating mode of shut off differential pressure; On the spool of uneven formula modulating valve, there is equalizing orifice, can offset a part of pressure, 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, is difficult to reach two sealings and seals completely simultaneously, and bearing temperature is high.
Model utility content
The utility model is for above-mentioned the deficiencies in the prior art, provides a kind of good sealing effect, floating valve seat balanced type high temperature that bearing temperature is high to regulate block valve.
The utility model is achieved by the following technical solution:
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, on spool, be provided with the first lower sealing surface with the cooperation place of valve seat, on valve seat, be 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; On spool, between floating valve seat, spool and spool cover plate, form the annular groove that a cross section is rectangle; In described annular groove, be provided with an alloy graphite compound gasket and a spring, one end of described spring and spool cover plate elasticity butt, the other end and alloy graphite compound gasket elasticity butt, leave gap between floating valve seat on described spool cover plate and spool; On spool, floating valve seat puts with the cooperation place of sleeve and is provided with sealing surface on first, on sleeve with spool on the cooperation place of floating valve seat cover be provided with sealing surface on second;
Distance on described first between sealing surface and the first lower sealing surface is less than the distance between sealing surface and the second lower sealing surface on second.
Further setting of the present utility model is, the outer race of described valve rod is provided with bellows.
Further setting of the present utility model 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.
Further setting of the present utility model is, the periphery of described bonnet inner valve stem is provided with stuffing box.
Further setting of the present utility model is, described sleeve and spool all adopt alloy material to make.
Floating valve seat balanced type high temperature described in the utility model regulates on upper and lower two sealing surfaces of block valve sleeve and spool and has 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 the combination of lower seal parafacies.Now spring-compressed is maximum, and the power that is applied to sealing is also maximum.By design, can make seal pressure be greater than design specific pressure, be less than specific pressure allowable, can reach cutting action, spool, in the process of closing and rising, 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 described in the utility model regulates block valve;
Fig. 2 is the I district enlarged view of Fig. 1;
Fig. 3 is the structural drawing of upper sealing pair while first sealing;
Fig. 4 is the structural drawing of upper-lower seal pair while 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 utility model is described in more detail.
As Figure 1-4, the utility model provides a kind of floating valve seat balanced type high temperature to 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, on spool 3, be provided with the first lower sealing surface with the cooperation place of valve seat 2, on valve seat 2, be provided with the second lower sealing surface with the cooperation place of spool 3; It is secondary that the 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, for driving spool 3 motions; 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; On spool, between floating valve seat 14, spool 3 and spool cover plate 11, form the annular groove that a cross section is rectangle; In described annular groove, be provided with an alloy graphite compound gasket 13 and a spring 12, one end of described spring 12 and spool cover plate 11 elasticity butts, the other end and alloy graphite compound gasket 13 elasticity butts, leave gap between floating valve seat 14 on described spool cover plate 11 and spool; On spool, on floating valve seat cover 14, be provided with sealing surface on first with the cooperation place of sleeve 4, on sleeve 4 with spool on the cooperation place of floating valve seat cover 14 be provided with sealing surface on second; On first, on sealing surface and second, sealing surface forms upper sealing pair.
Distance on described first between sealing surface and the first lower sealing surface is less than the distance between sealing surface and the second lower sealing surface on second.
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 9 inner valve stem 6 is provided with stuffing box 9.Can realize like this sylphon seal and filler double seal, so that valve does not exist filler to leak outside, 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, the working life of greatly improving valve.
Working principle of the present utility model is:
Because the distance between sealing surface on first and the first lower sealing surface is less than the distance between sealing surface and the second lower sealing surface on second, 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, on spool cover plate 11 and spool, the gap of floating valve seat 14 diminishes, so that the combination of lower seal parafacies, so realizes the excellent sealing of upper and lower two sealing pairs.
It is apparent to one skilled in the art that the utility model can be changed into various ways, and such change is not thought and departed from scope of the present utility model.All so apparent modifications of the technician to described field, within being included in the scope of this claim.

Claims (5)

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 on spool (14) and valve rod (6), 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 upper and valve seat (2) is provided with the first lower sealing surface, valve seat (2) cooperation place 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), for driving spool (3) motion, 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 floating valve seat on described spool (14) is set on described annular breach, between floating valve seat on spool (14), spool (3) and spool cover plate (11), form the annular groove that a cross section is rectangle, in described annular groove, be provided with an alloy graphite compound gasket (13) and a spring (12), one end of described spring (12) and spool cover plate (11) elasticity butt, the other end and alloy graphite compound gasket (13) elasticity butt, leave gap between floating valve seat (14) on described spool cover plate (11) and spool, on spool, floating valve seat cover (14) is upper is provided with sealing surface on first with the cooperation place of sleeve (4), sleeve (4) go up and spool on the cooperation place of floating valve seat cover (14) be provided with sealing surface on second,
Distance on described first between sealing surface and the first lower sealing surface is less than the distance between sealing surface and the second lower sealing surface on second.
2. floating valve seat balanced type high temperature according to claim 1 regulates block valve, it is characterized in that, the outer race of described valve rod (6) is provided with bellows (7).
3. floating valve seat balanced type high temperature according to claim 2 regulates block valve, it is characterized in that, 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.
4. floating valve seat balanced type high temperature according to claim 3 regulates block valve, it is characterized in that, the periphery of described bonnet (9) inner valve stem (6) is provided with stuffing box (9).
5. floating valve seat balanced type high temperature according to claim 1 regulates block valve, it is characterized in that, described sleeve (4) and spool (3) all adopt alloy material to make.
CN201320584579.1U 2013-09-22 2013-09-22 Floating valve seat balanced-type high-temperature regulating cutoff valve Expired - Fee Related CN203500489U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320584579.1U CN203500489U (en) 2013-09-22 2013-09-22 Floating valve seat balanced-type high-temperature regulating cutoff valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320584579.1U CN203500489U (en) 2013-09-22 2013-09-22 Floating valve seat balanced-type high-temperature regulating cutoff valve

Publications (1)

Publication Number Publication Date
CN203500489U true CN203500489U (en) 2014-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320584579.1U Expired - Fee Related CN203500489U (en) 2013-09-22 2013-09-22 Floating valve seat balanced-type high-temperature regulating cutoff valve

Country Status (1)

Country Link
CN (1) CN203500489U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103470781A (en) * 2013-09-22 2013-12-25 浙江贝尔控制阀门有限公司 Floating valve seat balanced-type high-temperature regulating cutoff valve
CN112032355A (en) * 2020-07-27 2020-12-04 北京航天石化技术装备工程有限公司 Sleeve type self-control backflow valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103470781A (en) * 2013-09-22 2013-12-25 浙江贝尔控制阀门有限公司 Floating valve seat balanced-type high-temperature regulating cutoff valve
CN112032355A (en) * 2020-07-27 2020-12-04 北京航天石化技术装备工程有限公司 Sleeve type self-control backflow valve

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140326

Termination date: 20180922