CN207514281U - The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure - Google Patents
The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure Download PDFInfo
- Publication number
- CN207514281U CN207514281U CN201721610512.5U CN201721610512U CN207514281U CN 207514281 U CN207514281 U CN 207514281U CN 201721610512 U CN201721610512 U CN 201721610512U CN 207514281 U CN207514281 U CN 207514281U
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- Prior art keywords
- valve
- valve seat
- face
- floating ring
- floating
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 8
- 238000007667 floating Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 238000005188 flotation Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model is related to a kind of universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure, including valve body, valve seat, spool, valve rod；Radial floating device is equipped with mainly between valve seat and valve body, the radial floating device is made of floating ring and pressing plate, floating ring is fitted in by pressing plate on the radial direction step in valve channel, dynamic sealing coordinates between radial direction step and pressing plate end face in floating ring both ends of the surface and valve channel, there is flotation chamber, valve seat both sides of the face are mounted between the inside step of diameter of pressing plate end face and floating ring endoporus between floating ring periphery and valve channel inner round wall.The concentricity in adjust automatically spool ball face sealing face and valve seat ball face sealing face in spool closing process has the characteristics that good seal performance, production yield rate height, long product lifecycle.
Description
Technical field
The utility model belongs to valve field more particularly to a kind of ball face sealing valve of 90 ° of revolutions.The utility model is fitted
For the ball face sealing valve of 90 ° of revolutions such as the whole world of high-temperature high-pressure medium operating mode, hemisphere, butterfly.
Background technology
Ball valve has many advantages, such as that simple in structure, conveniently opening and closing, full-bore circulation, flow resistance are small, is widely used in national economy
The medium delivery pipe road in each field, structure mainly include valve body, valve deck, valve seat, sphere, valve rod, sphere by valve rod installation with
Body cavity, the ball face sealing pair that sphere cooperates with valve seat composition, seals between valve seat periphery and valve channel endoporus
Cooperation drives 90 ° of rotations of sphere by valve rod by transmission device, realizes the keying operation of ball valve.Its major defect is：Valve seat diameter
To valve channel inner wall is fixedly mounted on, it is fixed in valve seat centerline theory on valve channel center line, still, sphere installation
After body cavity, more or less there is deviation between sphere center position and valve seat center line, and sphere spherical surface and valve seat
All there are mismachining tolerances in ball face sealing face, and leading to the concentricity in sphere spherical surface and valve seat ball face sealing face, there are deviations, make sphere
The seal pressure of sealing pair circumferencial direction is inconsistent when coordinating with valve seat, constrains the raising of the sealing performance of ball valve, error compared with
It is leaked when big, this is the main reason for causing existing hard seal ball valve manufacture pressure testing qualification rate low.And it is using
Increase the abrasion of sphere and sealing surface of seat in the process, reduce product service life.
Invention content
The purpose of this utility model is for shortcoming of the existing technology, and providing one kind being capable of adjust automatically spool spherical surface
Sealing surface and cooperation concentricity of the valve seat ball face sealing face because installing and processing generation, spool coordinate concentricity with valve seat
Good, sealing pair circumferential sealing is better than pressure consistency, and good seal performance, finished product rate is high, the Bidirectional pressure of long product lifecycle
Universal automatic compensation valve seat pressure plate type valve.
The technical solution of the utility model includes valve body, valve seat, spool, valve rod, sealing element and installed part, spool and valve seat
Ball face sealing face with mutual cooperation；Radial floating device, the radial floating device are equipped with mainly between valve seat and valve body
It is made of floating ring and pressing plate, floating ring is fitted in by pressing plate on the radial direction step in valve channel, floating ring both ends of the surface and valve
Dynamic sealing coordinates between radial direction step and pressing plate end face in body channel, has between floating ring periphery and valve channel inner round wall
There is flotation chamber, valve seat both sides of the face are mounted between the inside step of diameter of pressing plate end face and floating ring endoporus.
Preferably, valve seat has axis between the inside step of diameter of the radial end face and floating ring endoporus of sealing surface side
To flying height, valve seat periphery coordinates with floating ring inner hole wall dynamic sealing.
Preferably, spool is formed with the upper rotary shaft and Shaft of disjunctor, and spool is installed by upper rotary shaft and Shaft
In body cavity, it is connected with each other between valve rod lower end periphery and the axis hole of upper rotary shaft using spline.
The utility model has the advantages that between valve seat and valve body be equipped with radial floating device, when spool spherical surface sealing surface with
Because processing and installation error is there are during Concentricity tolerance between valve seat ball face sealing face, valve seat diameter is pushed in spool closing process
To floating, the concentricity in adjust automatically spool ball face sealing face and valve seat ball face sealing face makes the two ball face sealing face close with one heart
Cooperation is sealed, reaches sealing pair circumferential sealing than pressure uniformity, there is good seal performance, production yield rate height, product to use the longevity
Order the features such as long.
Description of the drawings
Fig. 1 is the side-mounted structure diagram of the utility model.
Fig. 2 is dress formula structure diagram on the utility model.
Fig. 3 is the structure diagram of the utility model butterfly sphere core.
Specific embodiment
The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure as shown in Figure 1 and Figure 2, including valve body 1, valve seat 5, spool
7th, valve rod, sealing element and installed part, spool 7 have the ball face sealing face to cooperate with valve seat, and spool 7 is using on a flap
Spherical seal ring composition is fixedly mounted, the ball face sealing face of 90 ° of revolutions such as global body, hemisphere, V-type sphere can also be used
Structure；Radial floating device is equipped between valve seat 5 and valve body 1, which is made of floating ring 3 and pressing plate 6, floats
Ring 3 is fitted in by pressing plate 6 on the radial direction step in 1 channel of valve body, 3 both ends of the surface of floating ring and the radial direction step in 1 channel of valve body
And dynamic sealing coordinates between 6 end face of pressing plate, and first is installed between the radial direction step in 1 channel of 3 left side of floating ring and valve body
Sealing ring 8 is coordinated between 6 end face of 3 right side of floating ring and pressing plate using minute surface dynamic sealing, 3 left side of floating ring and valve body 1
The very stiff and demanding sealing of minute surface can also be used between radial direction step in channel, improves heat resistance, pressing plate 6 is sealed solid by bolt 10
Dingan County has flotation chamber 2, makes floating ring 3 can in 1 channel of valve body between 1 channel inner round wall of 3 periphery of floating ring and valve body
With in 1 channel internal diameter of valve body, to movement, 5 both sides of the face of valve seat are mounted on 6 end face of pressing plate and the inside step of diameter of 3 endoporus of floating ring
Between, floating ring 3 drives valve seat 5 integrally to move radially.
Valve seat 5 has axial floating between the inside step of diameter of 3 endoporus of radial end face and floating ring of sealing surface side
Dynamic gap 4,5 periphery of valve seat coordinate with 3 inner hole wall dynamic sealing of floating ring, and valve seat 5 is allow axially to be moved in 3 endoporus of floating ring
It is dynamic, prevent high-temperature expansion between spool 7 and valve seat 5 stuck, 5 periphery of valve seat uses O-ring seal 9 with 3 inner hole wall of floating ring
Sealing.
Butterfly spring is set between 6 radial end face of valve seat 5 and pressing plate, and butterfly spring is by valve seat 5 to 3 endoporus of floating ring
The inside step direction of diameter compresses, and increases seal pressure when spool 7 coordinates with the sealing of valve seat 5, and make valve seat 5 in floating ring 3
Hole can move axially, and prevent spool 7 and 5 high temperature of valve seat stuck.
Spool 7 is formed with the upper rotary shaft and Shaft of disjunctor, and spool 7 is mounted on valve body by upper rotary shaft and Shaft
It is connected with each other between the axis hole of 1 inner cavity, valve rod lower end periphery and upper rotary shaft using spline.Medium pushes away 7 generation of spool
Power avoids prior art media to the thrust that spool 7 generates by the scarce of valve rod pressure-bearing by upper rotary shaft and Shaft pressure-bearing
It falls into, reduces the radial pressure of valve rod, reduce and open and close torque.On the external cylindrical surface of upper rotary shaft and Shaft and valve body 1
Axle sleeve is set between axis hole, the rotating friction force of rotary shaft and Shaft in reduction.
Valve rod is tightly connected by link and valve body 1, and link fixing seal is mounted on 1 upper end of valve body, upper rotary shaft
External cylindrical surface and the axis hole of link lower end move mating connection, packing seal are set to fill between periphery and link in the middle part of valve rod
It puts, valve rod upper end is connect with the transmission mechanism on the stent of link upper end, and Shaft is close by lower cover and valve body 1
Envelope connection, lower cover fixing seal are mounted on 1 lower end of valve body, and the axis hole of Shaft external cylindrical surface and lower cover upper end moves cooperation and connects
It connects, spool 7 uses side-mounted structure, i.e. spool 7 is packed into inner cavity from 1 channel of valve body, as shown in Figure 1.Butterfly may be used in spool 7
Spherical structure uses the butterfly plate with ball face sealing face, as shown in Figure 3.
Valve rod is tightly connected by upper cover and valve body 1, and upper cover fixing seal is mounted on 1 upper end of valve body, upper rotary shaft outer circle
Cylinder and the axis hole of upper cover lower end move mating connection, and stuffing seal, valve rod are set between periphery and upper cover in the middle part of valve rod
Upper end connect with the transmission mechanism on the stent of upper cover upper end, and the upper dress formula structure of the use of spool 7, i.e. spool 7 is from upper cover
Place is packed into 1 inner cavity of valve body, as shown in Figure 2.
Valve body 1 uses integrally casting or forging molding, and the connection mode of valve body 1 using flange connection or is welded to connect
Structure.
Claims (3)
1. a kind of universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure, including valve body（1）, valve seat（5）, spool（7）, valve rod,
Sealing element and installed part, spool（7）With valve seat（5）Ball face sealing face with mutual cooperation, spool（7）Using on a flap
Spherical seal ring composition is fixedly mounted；It is characterized in that valve seat（5）With valve body（1）Between be equipped with radial floating device, this radially
Floating installation is by floating ring（3）And pressing plate（6）Composition, floating ring（3）By pressing plate（6）It is fitted in valve body（1）Radial direction in channel
On step, floating ring（3）Both ends of the surface and the radial direction step and pressing plate in 1 channel of valve body（6）Dynamic sealing coordinates between end face, floating
Rotating ring（3）Left side and valve body（1）The first sealing ring is installed between radial direction step in channel（8）, in floating ring（3）Right side
With pressing plate（6）Coordinated between end face using minute surface dynamic sealing, pressing plate（6）By bolt（10）Sealing is fixedly mounted on valve body（1）It is logical
In road, floating ring（3）Periphery and valve body（1）There is flotation chamber between channel inner round wall（2）, valve seat（5）Both sides of the face are installed
In pressing plate（6）End face and floating ring（3）Between the inside step of diameter of endoporus.
2. the universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure according to claim 1, it is characterized in that valve seat（5）It is close
The radial end face and floating ring of sealing surface side（3）There is axial floating gap between the inside step of diameter of endoporus（4）, valve seat
（5）Periphery and floating ring（3）Inner hole wall dynamic sealing coordinates.
3. the universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure according to claim 1 or 2, feature spool（7）System
There are the upper rotary shaft and Shaft of disjunctor, spool（7）Valve body is mounted on by upper rotary shaft and Shaft（1）Inner cavity, valve rod
It is connected with each other between lower end periphery and the axis hole of upper rotary shaft using spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610512.5U CN207514281U (en) | 2017-11-28 | 2017-11-28 | The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610512.5U CN207514281U (en) | 2017-11-28 | 2017-11-28 | The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514281U true CN207514281U (en) | 2018-06-19 |
Family
ID=62541578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721610512.5U Active CN207514281U (en) | 2017-11-28 | 2017-11-28 | The universal automatic compensation valve seat pressure plate type valve of Bidirectional pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207514281U (en) |
-
2017
- 2017-11-28 CN CN201721610512.5U patent/CN207514281U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 1/2, Building 7, Zone 15, Wanyang Zhongchuang City, Bihu Town, Liandu District, Lishui City, Zhejiang Province, 325102 Patentee after: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region after: China Address before: 325102 East Ou Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province Patentee before: XITIE VALVE TECHNOLOGY CO.,LTD. Country or region before: China |