CN202629100U - High-pressure block valve - Google Patents
High-pressure block valve Download PDFInfo
- Publication number
- CN202629100U CN202629100U CN 201220334290 CN201220334290U CN202629100U CN 202629100 U CN202629100 U CN 202629100U CN 201220334290 CN201220334290 CN 201220334290 CN 201220334290 U CN201220334290 U CN 201220334290U CN 202629100 U CN202629100 U CN 202629100U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- big
- valve rod
- valve body
- 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
Links
Abstract
The utility model provides a high-pressure block valve which comprises a valve body provided with a hollow inner cavity and a valve rod extending into the hollow inner cavity of the valve body, wherein both sides of the valve body are provided with a medium inlet and a medium outlet; a small valve clack is fixed on a part of the valve rod, which is positioned in the hollow inner cavity of the valve body, and the bottom end surface of the small valve clack is provided with a circular ring-shaped convex shoulder; a big valve clack is sleeved above the valve rod positioned on the lower part of the small valve clack, and a section of the valve rod, which is positioned on the lower part of the big valve clack, is fixedly connected with a limit plate; the upper end surface of the big valve clack is provided with an annular groove which is a dovetail groove, and a sealing ring is arranged in the groove and can be used for forming a sealing pair with the circular ring-shaped convex shoulder at the bottom of the small valve clack to realize sealing; the distance between the limit plate and the big valve clack is larger than a sealing interference magnitude between the small valve clack and the big valve clack; and a section of the valve rod, which is positioned on the lower part of the small valve clack, is provided with a pressure balancing hole. The high-pressure block valve has the advantages of good tightness, easiness and rapidness during opening and closing and energy saving.
Description
Technical field
The utility model relates to valve field, particularly relates to a kind of high-pressure stop valve.
Background technique
Stop valve is to use the most a kind of valve, and the principle of start-stop of stop valve is the pressure that relies on valve rod, and flap sealing surface and sealing surface of seat are fitted tightly to stop the medium circulation.Stop valve frictional force between flap sealing surface and the sealing surface of seat in opening-closing process is little, more durable, and Lift is little, and is easy to manufacture, easy to maintenance, is not only applicable to mesolow, also is applicable to high pressure.But existing stop valve promotes flap by valve rod and realizes valve opening and closing, and in this process, under the medium effect, the moment of Open valve is big, and the moment of throttle down is little, so power consumption is big; When big or working pressure was big when the bore of stop valve, energy spent when stop valve opens and closes operation was also just higher.
The model utility content
In order to overcome the existing above-mentioned shortcoming of stop valve, the utility model provides a kind of high-pressure stop valve, easily quick during not only good airproof performance, and keying, the saving energy.
It is a kind of high-pressure stop valve that the utility model solves the technological scheme that its technical problem adopted, and comprises the valve body that is provided with hollow cavity, the valve rod that stretches into the valve body hollow cavity, and the valve body left side is the inlet of medium (gas, liquid or two phase flow); The right side is the outlet of medium, realizes radially fixingly between valve rod and the valve body through stuffing box, is fixedly connected through gland between stuffing box and the valve body; Be provided with filler and spring between stuffing box inside and the valve rod; Gland is set in the stuffing box end and valve rod carries out fixing seal, and valve rod is positioned at valve body hollow cavity partial fixing one little flap, and little flap bottom end is provided with a ring convex shoulder; Be positioned at the overhead cover of valve rod one big valve flap of little flap bottom; Valve rod is positioned at the big valve flap lower section and is fixedly connected a limiting board, and the big valve flap upper-end surface is provided with an annular groove, and annular groove is a dovetail groove; Seal ring is housed in the groove; The groove inner seal ring can form sealing pair with little flap base circle convex shoulder and realize sealing, and the distance between limiting board and the big valve flap is greater than the sealed increscence amount between little flap and the big valve flap, and valve rod is positioned at little flap lower section and is provided with a pressure compensation opening.
Little flap and valve rod are integral structure.
Limiting board axial position can regulate.
Said big valve flap bottom is provided with circular groove, and seal ring is installed in the said circular groove.
Stuffing box and valve rod cooperation place are provided with the back seal letter, and little flap upper-end surface is an inverse sealing face, and inverse sealing face is provided with a boss, and boss side surfaces is provided with the back seal circle, the back seal circle can with back seal letter fitted seal.
The beneficial effect of the utility model is in opening the valve process; When valve rod drives little flap and breaks away from big valve flap; Medium gets into media outlet from the medium import through pressure balance mouth; Thereby reduced the pressure reduction up and down of flap, when continuing poppet stem, just can easily open big valve flap, realized the purpose of energy and labour saving; And the utility model not only is provided with the seal ring that matches with valve body in the big valve flap bottom, and when the valve complete opening, adopts dual back seal structure between little flap and the stuffing box, has guaranteed under the high pressure operating mode, to still have good sealing property.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the present embodiment structural drawing
Among Fig. 1: 1. valve body; 2. medium import; 3. big valve flap; 4. little flap; 5. gland; 6. spring; 7. stuffing box; 8. filler; 9. Gland; 10. valve rod; 11. back seal letter; 12. back seal circle; 13. inverse sealing face; 14. pressure compensation opening; 15. media outlet; 16. seal ring; 17. limiting board.
Embodiment
As shown in Figure 1, a kind of high-pressure stop valve comprises the valve body 1 that is provided with hollow cavity, the valve rod 10 that stretches into valve body 1 hollow cavity; Valve body 1 both sides are provided with medium import 2 and media outlet 15, realize radially fixing through stuffing box 7 between valve rod 10 and the valve body 1, are fixedly connected through gland 5 between stuffing box 7 and the valve body 1; Be provided with filler 8 and spring 6 between stuffing box 7 inside and the valve rod 1, stuffing box 7 ends are provided with Gland 9 and carry out fixing seal with valve rod 10, and valve rod 10 is positioned at valve body 1 hollow cavity partial fixing one little flap 4; Little flap 4 is an integral structure with valve rod 10, and little flap 4 bottom ends are provided with a ring convex shoulder, is positioned at valve rod 10 overhead cover one big valve flaps 3 of little flap 4 bottoms; Big valve flap 3 carries out axial limiting by the limiting board that is fixedly connected on valve rod one end 17; Big valve flap 3 upper-end surfaces are provided with an annular groove, and said annular groove is a dovetail groove, and seal ring is housed in the groove; Said groove inner seal ring can form sealing pair with little flap 4 bottom ring convex shoulders and realize sealing; Limiting board 17 is threaded with valve rod 10, and the axial position can regulate, and is tight with lock after setting up; Axial distance between limiting board 17 and the big valve flap 3 is greater than the sealed increscence amount between little flap 4 and the big valve flap 3, and valve rod 10 is positioned at little flap 4 lower section and is provided with a pressure compensation opening 14.Big valve flap 3 bottoms are provided with circular groove; Seal ring is installed in the circular groove, and with valve body 1 fitted seal, stuffing box 7 is provided with back seal letter 11 with valve rod 10 cooperation places; Little flap 4 upper-end surfaces are inverse sealing face 13; Inverse sealing face 13 is provided with a boss, and boss side surfaces is provided with back seal circle 12, back seal circle 12 can with back seal letter 11 fitted seal.
When stop valve is in closed condition; Stop valve is pressed against on the sealing surface of valve body 1 through the seal ring 16 that is arranged in big valve flap 3 bottom annular recess tightly; This moment, the convex shoulder and the seal ring in big valve flap 3 grooves 16 of little flap 4 formed sealing pair realization sealing; Make pressure compensation opening 14 be in sealed condition, thereby guaranteed the sealing of stop valve.
When opening stop valve, operator use driving mechanism poppet stem 10, and little flap 4 also upwards promotes thereupon; When little flap 4 breaks away from big valve flap 3; Pressure compensation opening 14 is opening state, and medium gets into media outlet 15 from medium import 2 through pressure compensation opening 14, thereby has reduced the pressure reduction up and down of little flap 4; Therefore continue poppet stem 10; When limiting board 17 contacts with big valve flap 3, can drive big valve flap 3 easily and upwards promote, thereby open valve fast, realize the purpose of energy and labour saving.
Claims (4)
1. a high-pressure stop valve comprises the valve body that is provided with hollow cavity, the valve rod that stretches into the valve body hollow cavity, and the valve body left side is the inlet of medium (gas, liquid or two phase flow); The right side is the outlet of medium, realizes radially fixingly between valve rod and the valve body through stuffing box, is fixedly connected through gland between stuffing box and the valve body; Be provided with filler and spring between stuffing box inside and the valve rod; Gland is set in the stuffing box end and valve rod carries out fixing seal, it is characterized in that: valve rod is positioned at valve body hollow cavity partial fixing one little flap, and little flap bottom end is provided with a ring convex shoulder; The said overhead cover of valve rod one big valve flap that is positioned at little flap bottom; Said valve rod is positioned at the big valve flap lower section and is fixedly connected a limiting board, and said big valve flap upper-end surface is provided with an annular groove, and said annular groove is a dovetail groove; Seal ring is housed in the groove; Said groove inner seal ring can form sealing pair with little flap base circle convex shoulder and realize sealing, and the distance between said limiting board and the big valve flap is greater than the sealed increscence amount between little flap and the big valve flap, and said valve rod is positioned at little flap lower section and is provided with a pressure compensation opening.
2. a kind of high-pressure stop valve according to claim 1 is characterized in that: said little flap and valve rod are integral structure.
3. a kind of high-pressure stop valve according to claim 1 is characterized in that: said limiting board axial position can regulate.
4. a kind of high-pressure stop valve according to claim 1 is characterized in that: said big valve flap bottom is provided with circular groove, and seal ring is installed in the said circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334290 CN202629100U (en) | 2012-07-11 | 2012-07-11 | High-pressure block valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334290 CN202629100U (en) | 2012-07-11 | 2012-07-11 | High-pressure block valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202629100U true CN202629100U (en) | 2012-12-26 |
Family
ID=47382305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334290 Expired - Fee Related CN202629100U (en) | 2012-07-11 | 2012-07-11 | High-pressure block valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202629100U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363125A (en) * | 2013-05-23 | 2013-10-23 | 金卡高科技股份有限公司 | Multistage-opening valve driven by slowdown motor |
| CN103574042A (en) * | 2012-07-27 | 2014-02-12 | 上海神通企业发展有限公司 | High-pressure shut-off valve |
| CN104879503A (en) * | 2015-05-13 | 2015-09-02 | 华夏阀门有限公司 | Quick-acting slurry stop valve |
-
2012
- 2012-07-11 CN CN 201220334290 patent/CN202629100U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574042A (en) * | 2012-07-27 | 2014-02-12 | 上海神通企业发展有限公司 | High-pressure shut-off valve |
| CN103363125A (en) * | 2013-05-23 | 2013-10-23 | 金卡高科技股份有限公司 | Multistage-opening valve driven by slowdown motor |
| CN103363125B (en) * | 2013-05-23 | 2016-02-10 | 金卡高科技股份有限公司 | The multistage valve opening door driven by reducing motor |
| CN104879503A (en) * | 2015-05-13 | 2015-09-02 | 华夏阀门有限公司 | Quick-acting slurry stop valve |
| CN104879503B (en) * | 2015-05-13 | 2017-09-29 | 华夏阀门有限公司 | A kind of quick-action slurry stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20210711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |