CN205446758U - Bitonic section balanced type stop valve - Google Patents
Bitonic section balanced type stop valve Download PDFInfo
- Publication number
- CN205446758U CN205446758U CN201620267565.0U CN201620267565U CN205446758U CN 205446758 U CN205446758 U CN 205446758U CN 201620267565 U CN201620267565 U CN 201620267565U CN 205446758 U CN205446758 U CN 205446758U
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- valve
- sealing surface
- conical
- case
- valve body
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Abstract
The utility model relates to a bitonic section balanced type stop valve, including valve body, case, valve rod, valve gap, the case adopts conical sealing surface, sets up the toper valve seat seal face of mutually supporting with the case between inlet channel of the valve body and exit channel, and the valve body adopts the height to advance to hang down a structure, it comprises with vice case main valve core mainly to be the case, is equipped with intercommunication inlet channel of the valve body and exit channel's pressure releasing pathway in the main valve core, sets up toper valve seat seal face in pressure releasing pathway, and vice case lower part sets up conical sealing surface, and this conical sealing surface mutually supports with the toper valve seat seal face in the pressure releasing pathway, and the adoption is unsteady between vice case up end and the valve rod is connected, toper valve seat seal off -plate inclines and installs the spring between the up end in the anchor ring in the vice case conical sealing surface outside and main valve core. Have advantages such as little, the sealed vice cooperation precision of the moment of opening and close is high, sealing performance is good.
Description
Technical field
This utility model belongs to valve field, especially with regard to a kind of stop valve.
Background technology
Stop valve is typically by flat seal and conical surface sealing structure.Plane sealing structure utilizes plane spool and the mutual crush seal of valve seat planes sealing surface, and its shortcoming is that seal pressure is low, accumulates the pollutant on sealing surface and makes sealing pair be not closed completely, even damages sealing surface；Conical surface sealing structure utilizes conical surface spool and valve seat conical seal (contact) face to cooperate sealing, its shortcoming is that spool conical seal (contact) face is high with valve seat conical seal (contact) face concentricity requirement, Product processing, assembling are it is difficult to ensure that both concentricitys, cause and be not closed completely, sealing is poor, and high pressure operating mode keying moment is big.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, it is provided that a kind of open and close light, double adjustment formula stop valves of good seal performance.
The technical solution of the utility model includes valve body, spool, valve rod, valve gap, and spool uses conical seal (contact) face, arranges the conical valve seat sealing surface cooperated with spool between valve body intake channel and exit passageway, and valve body uses high in and low out structure；Mainly spool is made up of main valve plug and auxiliary valve core, the pressure release passage of valve body intake channel and exit passageway it is communicated with in main valve plug, conical valve seat sealing surface is set in pressure release passage, auxiliary valve core bottom arranges conical seal (contact) face, this conical seal (contact) face cooperates with the conical valve seat sealing surface in pressure release passage, uses floating connection between auxiliary valve core upper surface and valve rod；Spring is installed between anchor ring and the main valve plug inner conical sealing surface of seat outer upper end face outside auxiliary valve core conical seal (contact) face.
The utility model has the advantages that spool uses main valve plug and auxiliary valve core composition, first turn on auxiliary valve core during unlatching and be drained into mouth pressure, be then turned on main valve plug, balance main valve plug two-way pressure, open moment little；Arrange spring floating between main valve plug with auxiliary valve core to be connected, auxiliary valve core uses floating connection with valve rod, in spool closing process, its main valve plug and auxiliary valve core all can move at valve rod radially trace, it is automatically adjusted between main valve plug conical seal (contact) face and the upper conical sealing surface of seat of valve body and concentricity between auxiliary valve core conical seal (contact) face and main valve plug pressure release passage inner conical sealing surface of seat, realizing the most double regulation concentric fit, sealing pair quality of fit is high, good seal performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Double adjustment formula stop valves as shown in Figure 1, including valve body 1, spool, valve rod 6, valve gap 7, spool uses conical seal (contact) face, the conical valve seat sealing surface cooperated with spool is set between valve body 1 intake channel and exit passageway, valve body 1 uses high in and low out structure, the i.e. exit passageway of valve body 1 is positioned on the downside of spool, valve rod 6 upper end is in transmission connection with handwheel 11 by valve stem nut 9, valve stem nut is arranged in support 12 by bearing 8 bearing cap 10, support 12 and valve rod 6 support arrange anti-rotation device 13, by the linear motion that convert rotational motion is valve rod 6 of handwheel 11；Spool is made up of main valve plug 2 and auxiliary valve core 3, the pressure release passage 14 of valve body 1 intake channel and exit passageway it is communicated with in main valve plug 2, conical valve seat sealing surface is set in pressure release passage 14, auxiliary valve core 3 bottom arranges conical seal (contact) face, this conical seal (contact) face cooperates with the conical valve seat sealing surface in pressure release passage 14, floating connection is used between auxiliary valve core 3 upper surface and valve rod 6, make auxiliary valve core 3 can move at valve rod 6 radially trace, in closing process, its conical seal (contact) face adjusts concentricity automatically with the conical valve seat sealing surface in main valve plug 2 pressure release passage 14；Spring 4 is installed between anchor ring and the main valve plug 2 inner conical sealing surface of seat outer upper end face outside auxiliary valve core 3 conical seal (contact) face, in closing process, after spring 4 promotes the conical valve seat sealing surface concentric fit of main valve plug 2 and valve body 1, auxiliary valve core 3 moves down seal concentric with main valve plug 2 again and coordinates, it is achieved the most double concentricity adjustings.Spring 4 uses helical spring.When opening, auxiliary valve core 3 first turns on valve body 1 inlet pressure of releasing, then by valve rod 6 open drive auxiliary valve core 3 together with main valve plug 2 on remove and open, open and close moment little.
Claims (1)
1. a double adjustment formula stop valve, including valve body (1), spool, valve rod (6), valve gap (7), spool uses conical seal (contact) face, arrange the conical valve seat sealing surface cooperated with spool between intake channel and exit passageway at valve body (1), valve body (1) uses high in and low out structure；It is characterized in that spool is made up of main valve plug (2) and auxiliary valve core (3), the pressure release passage (14) of valve body (1) intake channel and exit passageway it is communicated with in main valve plug (2), in pressure release passage (14), conical valve seat sealing surface is set, auxiliary valve core (3) bottom arranges conical seal (contact) face, this conical seal (contact) face cooperates with the conical valve seat sealing surface in pressure release passage (14), uses floating connection between auxiliary valve core (3) upper surface and valve rod (6)；Spring (4) is installed between anchor ring and main valve plug (2) the inner conical sealing surface of seat outer upper end face outside auxiliary valve core (3) conical seal (contact) face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620267565.0U CN205446758U (en) | 2016-03-28 | 2016-03-28 | Bitonic section balanced type stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620267565.0U CN205446758U (en) | 2016-03-28 | 2016-03-28 | Bitonic section balanced type stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446758U true CN205446758U (en) | 2016-08-10 |
Family
ID=56609043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620267565.0U Active CN205446758U (en) | 2016-03-28 | 2016-03-28 | Bitonic section balanced type stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205446758U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439058A (en) * | 2016-10-28 | 2017-02-22 | 超达阀门集团丽水有限公司 | Multifunctional stop valve |
| CN113309489A (en) * | 2021-07-06 | 2021-08-27 | 成都百胜野牛科技有限公司 | Self-adaptive turn-off structure of intelligent flow regulator of natural gas well |
-
2016
- 2016-03-28 CN CN201620267565.0U patent/CN205446758U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439058A (en) * | 2016-10-28 | 2017-02-22 | 超达阀门集团丽水有限公司 | Multifunctional stop valve |
| CN113309489A (en) * | 2021-07-06 | 2021-08-27 | 成都百胜野牛科技有限公司 | Self-adaptive turn-off structure of intelligent flow regulator of natural gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |