CN206943444U - A kind of automatic compensation bidirectional sealed butterfly valve - Google Patents
A kind of automatic compensation bidirectional sealed butterfly valve Download PDFInfo
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- CN206943444U CN206943444U CN201720747880.8U CN201720747880U CN206943444U CN 206943444 U CN206943444 U CN 206943444U CN 201720747880 U CN201720747880 U CN 201720747880U CN 206943444 U CN206943444 U CN 206943444U
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Abstract
A kind of automatic compensation bidirectional sealed butterfly valve, including valve body, valve rod, butterfly plate and the valve seat that sealing pair is formed with butterfly plate, set on valve body a flange and with a cascaded surface, spring is set between valve seat and cascaded surface so that valve seat can be in axially micro movement；Axially arranged compensation gap between valve seat and flange, and be fixedly connected with the limiting plate of flange opposite side, limiting plate can be abutted with flange to limit the axial displacement size of valve seat；Hole one, hole two and Kong Sansan through hole are additionally provided with valve body, cavity is connected on the left of Kong Yiyu, and gap connection, the cavity connection of Kong Sanyu right sides are compensated described in Kong Eryu, and three through holes are connected with the shuttle valve outside valve body by pipeline.The beneficial effects of the utility model are：By the connection and blocking between cavity at left and right sides of shuttle valve control valve and compensation gap, so that medium power can promote valve seat to press to butterfly plate always, two way seal is realized；Meanwhile when valve opening, gap releasing pressure automatically is compensated, so as to reduce the unlatching moment of torsion of valve.
Description
Art
A kind of butterfly valve is the utility model is related to, more particularly to a kind of bidirectional sealed butterfly valve that can be compensated automatically.
Background technology
Bidirectional sealed butterfly valve at present, it is to apply bigger moment of torsion by drive device to make to produce one between valve seat and sealing ring
Fixed seal pressure, sealing is realized, this form needs excessive drive device, and makes when drive device applies bigger moment of torsion
After valve seat and sealing ring produce certain seal pressure, valve seat and sealing ring can be due to mismachining tolerance and loose in use
It is dynamic, it is difficult to ensure that the two way seal of valve.
Utility model content
In order to overcome the disadvantages mentioned above of existing butterfly valve, the utility model provides a kind of two way seal butterfly that can be compensated automatically
Valve.
The utility model solves its technical problem the technical scheme adopted is that a kind of automatic compensation bidirectional sealed butterfly valve,
Including valve body, valve rod, butterfly plate and the valve seat for forming with butterfly plate sealing pair, set on valve body a flange and with a cascaded surface, valve
Spring is set between seat and cascaded surface so that valve seat can be in axially micro movement；Between valve seat and flange between axially arranged compensation
Gap, and be fixedly connected with the limiting plate of flange opposite side, limiting plate can be abutted with flange to limit the axial displacement size of valve seat；
Hole one, hole two and Kong Sansan through hole are additionally provided with valve body, cavity is connected on the left of Kong Yiyu, and gap is compensated described in Kong Eryu and is connected
Logical, cavity connection, three through holes are connected with the shuttle valve outside valve body by pipeline on the right side of Kong Sanyu.
Further, shuttle valve includes valve pocket, peg or spindle and first passage, second channel, third channel, first passage and hole
One connection, second channel connects with hole two, third channel and hole tee joint, and first passage, second channel, third channel are and valve
Chamber is connected, and peg or spindle is slided by the promotion of medium power in valve pocket, can block the connection between first passage and second channel,
Or the connection between third channel and second channel.
The beneficial effects of the utility model are：Pass through the company between cavity at left and right sides of shuttle valve control valve and compensation gap
Logical and blocking, so that medium power can promote valve seat to press to butterfly plate always, realizes two way seal；Meanwhile work as valve opening
When, gap releasing pressure automatically is compensated, so as to reduce the unlatching moment of torsion of valve.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment；
Fig. 2 is enlarged drawing at figure A.
In figure：1. valve body；2. butterfly plate；3. valve rod；4. shuttle valve；5. valve seat；6. left side cavity；7. right side cavity；
8. hole three；9. hole two；10. hole one；11. compensate gap；12. flange；13. limiting plate；14. first passage；15. second is logical
Road；16. third channel；17. peg or spindle；18. valve pocket；19. spring；20. cascaded surface.
Embodiment
As shown in Figure 1, 2, a kind of automatic compensation bidirectional sealed butterfly valve, including valve body 1, valve rod 3, butterfly plate 2 and with butterfly plate 2
Form the valve seat 5 of sealing pair, set on valve body a flange 12 and with a cascaded surface 20, bullet is set between valve seat 5 and cascaded surface 20
Spring 19 so that valve seat 5 can be in axially micro movement；Between valve seat 5 and flange 12 it is axially arranged compensation gap 11, and with flange 12
The limiting plate 13 of opposite side is fixedly connected, and limiting plate 13 can be abutted with flange 12 to limit the axial displacement size of valve seat 5；Valve body
Hole 1, hole 29 and 383, hole through hole, hole 1 are additionally provided with 16, between hole 29 and the compensation are connected with left side cavity
Gap 11 is connected, and hole 38 connects with right side cavity 7, and three through holes are connected with the shuttle valve 4 outside valve body 1 by pipeline.
Further, shuttle valve 4 includes valve pocket 18, the core of shuttle 17 and first passage 14, second channel 15, third channel 16,
First passage 14 connects with hole 1, and second channel 15 connects 9 with hole two, and third channel 16 connects with hole 38, first passage
14th, second channel 15, third channel 16 are connected with valve pocket 18, and peg or spindle 17 is slided by the promotion of medium power in valve pocket 18,
The company between the connection between first passage 14 and second channel 15, or third channel 16 and second channel 15 can be blocked
It is logical.
During forward direction sealing, medium can be by the access aperture 1 of left side cavity 6, and then enters the first passage 14 of shuttle valve 4,
The valve pocket 18 of shuttle valve 4 is entered back into, peg or spindle 17 is moved right in the presence of medium power, and second channel 15 and third channel 16 are hindered
It is disconnected, meanwhile, medium enters compensation gap 11 by second channel 15 so that the compensation pressure of gap 11 is pressed with cavity 6 on the left of valve
Dynamic balance, while valve seat 5 can be pressed to butterfly plate 2 and produce secondary seal than pressure, realize positive sealing；When valve opening, mend
The pressure of gap 11 is repaid by shuttle valve 4 and the releasing pressure automatically of hole 1, reduces the unlatching moment of torsion of valve.Similarly, when valve is reverse
During sealing, medium enters the third channel 16 of shuttle valve 4 by the access aperture 38 of right side cavity 7, enters back into the valve pocket of shuttle valve 4
18, peg or spindle 17 is moved to the left in the presence of medium power, and second channel 15 and first passage 14 are blocked, meanwhile, medium passes through
Second channel 15 enters compensation gap 11 so that the pressure balance of cavity 7 on the right side of the compensation pressure of gap 11 and valve, while can will
Valve seat 5 presses to butterfly plate 2 and produces secondary seal than pressure, realizes positive sealing；When valve opening, the compensation pressure of gap 11 passes through shuttle
Valve 4 and the releasing pressure automatically of hole 38, reduce the unlatching moment of torsion of valve.
Claims (2)
1. a kind of automatic compensation bidirectional sealed butterfly valve, including valve body, valve rod, butterfly plate and the valve seat that sealing pair is formed with butterfly plate,
It is characterized in that：Set on the valve body flange and with a cascaded surface, spring is set between the valve seat and the cascaded surface,
So that valve seat can be in axially micro movement；Axially arranged compensation gap between the valve seat and flange, and with flange opposite side
Limiting plate is fixedly connected, and the limiting plate can be abutted with flange to limit the axial displacement size of valve seat；Also set on the valve body
There are hole one, hole two and Kong Sansan through hole, the cavity connection of Kong Yiyu left sides, the connection of compensation gap, Kong Sanyu are right described in Kong Eryu
Side chamber body is connected, and three through holes are connected with the shuttle valve outside valve body by pipeline.
2. automatic compensation bidirectional sealed butterfly valve as claimed in claim 1, it is characterised in that：The shuttle valve includes valve pocket, peg or spindle
And first passage, second channel, third channel, the first passage connect with hole one, the second channel connects with hole two,
The third channel and hole tee joint, the first passage, second channel, third channel connect with valve pocket, and the peg or spindle leads to
The promotion for crossing medium power is slided in valve pocket, can block the connection between first passage and second channel, or third channel
Connection between second channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720747880.8U CN206943444U (en) | 2017-06-26 | 2017-06-26 | A kind of automatic compensation bidirectional sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720747880.8U CN206943444U (en) | 2017-06-26 | 2017-06-26 | A kind of automatic compensation bidirectional sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206943444U true CN206943444U (en) | 2018-01-30 |
Family
ID=61364868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720747880.8U Active CN206943444U (en) | 2017-06-26 | 2017-06-26 | A kind of automatic compensation bidirectional sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206943444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927967A (en) * | 2020-09-21 | 2020-11-13 | 天津市塘沽第一阀门有限公司 | Two-way self sealss device of two eccentric butterfly valve hard seal disk seats |
-
2017
- 2017-06-26 CN CN201720747880.8U patent/CN206943444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927967A (en) * | 2020-09-21 | 2020-11-13 | 天津市塘沽第一阀门有限公司 | Two-way self sealss device of two eccentric butterfly valve hard seal disk seats |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230607 Address after: No. 68, xilide Road, Nanyang Town, Qidong City, Nantong City, Jiangsu Province, 226232 Patentee after: Jiangsu Shentong Nuclear Power Equipment Co.,Ltd. Address before: No. 88, Xiexing Street, Nanyang Town, Qidong City, Nantong City, Jiangsu Province, 226232 Patentee before: JIANGSU SHENTONG VALVE Co.,Ltd. |
|
| TR01 | Transfer of patent right |