CN203906833U - Eccentric butterfly valve for gas pipeline - Google Patents
Eccentric butterfly valve for gas pipeline Download PDFInfo
- Publication number
- CN203906833U CN203906833U CN201420345389.9U CN201420345389U CN203906833U CN 203906833 U CN203906833 U CN 203906833U CN 201420345389 U CN201420345389 U CN 201420345389U CN 203906833 U CN203906833 U CN 203906833U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- eccentric
- sealing
- butterfly
- 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 discloses an eccentric butterfly valve for a gas pipeline. The valve comprises a valve seat as well as a valve rod and a valve clack which are matched with the valve seat, wherein a through hole is formed in the wall of one end where an actuating mechanism of the valve seat is located; an annular purging pipe parallel with the radial section of the valve seat is arranged in a cavity of the valve seat, penetrates through the through hole to be communicated with a gas source pipe and is provided with purging holes in the direction facing towards the combined position of the valve clack and the valve seat; a valve rod fixing frame is arranged on one side of the valve clack; sealing bodies which extend outwards and obliquely from edges of two end surfaces and intersect on the same circumference are arranged on a main body edge of the valve clack. According to the eccentric butterfly valve, a gas source is used for purging the combined position of the valve seat and the valve clack, so that the problem of dust accumulation is solved, and maintenance times are reduced; in addition, the surface-contact type valve clack is changed into the line-contact type valve clack, so that the contact time of the valve clack and the valve seat is shortened, the contact area of the valve clack and the valve seat is reduced, the friction force between the valve clack and the valve seat is reduced, and meanwhile, dirt on the valve seat can be scraped more easily.
Description
Technical field
The utility model relates to technical field of valve manufacturing, is specifically related to butterfly valve.
Background technique
In industrial production, the change of a lot of process parameters is that the type of valve is determined by the size of the type of medium, ducted pressure and temperature and pipeline by regulating the aperture of valve on pipeline to realize; The operating mode that the feature that butterfly valve is rapid with open-close convenient, fluid resistance is little is widely used in pipeline pressure and temperature is lower, pipe diameter is larger, but in actual use, valve can because a lot of reasons causes spool, action be undesired.The flap of current eccentric-butterfly-valve is formed by the pressing of multilayer valve plate; its limit portion is thicker; and the area of contact between valve seat is larger; frictional force between valve seat and flap is larger; and when medium is the gas with dust; dust often can accumulate in valve seat and the flap junction of eccentric-butterfly-valve; affect the action of flap; when gas contains moisture content; dust and water, in conjunction with forming dirt, increase the frictional force between valve seat and flap, make flap open and close difficulty; and form vicious circle, finally cause valve normally to work.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of eccentric-butterfly-valve for gas pipeline, can solve existing butterfly valve and easily at valve seat, gather during with dust at gas medium, the problem that causes valve normally to work.
The utility model is achieved through the following technical solutions:
An eccentric-butterfly-valve for gas pipeline, comprises valve seat, and the valve rod coordinating with valve seat, flap;
The wall of actuator's place end of described valve seat is provided with penetration hole, in described valve support chamber, be provided with the annular annular scavenging conduit that is parallel to valve seat radial cross section, described annular scavenging conduit is communicated with gas source pipe through described penetration hole, and described annular scavenging conduit is provided with purge hole towards flap and valve seat junction direction;
Described flap one side is provided with valve rod fixing frame, and the body edge portion of described flap is provided with from both ends of the surface limit portion and is tilted to extension and intersects at the seal of same circumference.
Further improvement of the utility model scheme is, penetration hole is tapped hole, and two ends, aperture are respectively equipped with A Sealing and B Sealing, and described annular scavenging conduit and gas source pipe are communicated with A Sealing and B Sealing respectively.
Further improvement of the utility model scheme is, A Sealing is the T shape stainless steel threeway gas source pipe rapid pipe joint that is connected in valve seat inner side, and described B Sealing is the stainless steel two ventilation source capsule rapid pipe joints that are connected in valve seat outside.
Further improvement of the utility model scheme is that purge hole has a plurality of, is evenly arranged on annular scavenging conduit.
Further improvement of the utility model scheme is that the angle that main body both ends of the surface limit portion is tilted to extension the crossing angle that forms is 30 ~ 60 °.
Further improvement of the utility model scheme is that seal and main body are welding.
The utility model advantage is compared with prior art:
One, with source of the gas, valve seat and flap junction are purged, solve dirt accumulation problem, reduced the number of times of safeguarding, extended the working life of valve, the equipment funds that reduced enterprise drop into;
Two, flap changes line into by face contact type and contacts, increase the centre distance of flap and valve rod, reduced time of contact and the area of contact of flap and valve seat, thereby reduced the frictional force between flap and valve seat, more easily strike off the dirt on valve seat, avoid gathering of dirt simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the I place enlarged diagram of Fig. 1.
Fig. 3 is that the A of Fig. 1 is to schematic diagram.
Fig. 4 is flap cross-sectional schematic.
Fig. 5 is that the A of Fig. 4 is to schematic diagram.
Fig. 6 is that the B of Fig. 4 is to schematic diagram.
Embodiment
A kind of eccentric-butterfly-valve for gas pipeline as shown in Figure 1 and Figure 4, comprises valve seat 1, and the valve rod 2 coordinating with valve seat 1, flap 3,
The wall of actuator's place end of described valve seat 1 is provided with penetration hole, described valve seat is provided with the annular scavenging conduit 4 that is parallel to valve seat 1 radial cross section in 1 chamber, described annular scavenging conduit 4 is communicated with gas source pipe 5 through described penetration hole, and described annular scavenging conduit 4 is provided with purge hole 41 towards flap 3 and valve seat 1 junction direction;
Described flap 3 one sides are provided with valve rod fixing frame 33, and the main body 31 limit portions of described flap 3 are provided with from both ends of the surface limit portion and are tilted to extension and intersect at the seal 32 of same circumference.
As shown in Figure 3, penetration hole is tapped hole, and two ends, aperture are respectively equipped with A Sealing 6 and B Sealing 7, and described annular scavenging conduit 4 and gas source pipe 5 are communicated with A Sealing 6 and B Sealing 7 respectively.
As shown in Figure 3, A Sealing 6 is for being connected in the T shape stainless steel threeway gas source pipe rapid pipe joint of valve seat inner side, and described B Sealing 7 is for being connected in the source capsule rapid pipe joints of ventilating of stainless steel two outside valve seat.
As shown in Figure 2, purge hole 41 has a plurality of, is evenly arranged on annular scavenging conduit 4.
As shown in Fig. 4 or Fig. 6, the angle that main body 31 both ends of the surface limit portions are tilted to extension the crossing angle that forms is 30 ~ 60 °.
As shown in Fig. 4 or Fig. 5, seal 32 is welding with main body 31.
Above-mentioned seal 32 adopts the method for built-up welding polishing to be made, the alloyed steel that its material is high hardness.
Claims (6)
1. for an eccentric-butterfly-valve for gas pipeline, comprise valve seat (1), and the valve rod (2) coordinating with valve seat (1), flap (3), it is characterized in that:
The wall of actuator's place end of described valve seat (1) is provided with penetration hole, in described valve seat (1) chamber, be provided with the annular scavenging conduit (4) that is parallel to valve seat (1) radial cross section, described annular scavenging conduit (4) is communicated with gas source pipe (5) through described penetration hole, and described annular scavenging conduit (4) is provided with purge hole (41) towards flap (3) and valve seat (1) junction direction;
Described flap (3) one sides are provided with valve rod fixing frame (33), and main body (31) the limit portion of described flap (3) is provided with from both ends of the surface limit portion and is tilted to extension and intersects at the seal (32) of same circumference.
2. a kind of eccentric-butterfly-valve for gas pipeline as claimed in claim 1, it is characterized in that: described penetration hole is tapped hole, two ends, aperture are respectively equipped with A Sealing (6) and B Sealing (7), and described annular scavenging conduit (4) and gas source pipe (5) are communicated with A Sealing (6) and B Sealing (7) respectively.
3. a kind of eccentric-butterfly-valve for gas pipeline as claimed in claim 2, it is characterized in that: described A Sealing (6) is for being connected in the T shape stainless steel threeway gas source pipe rapid pipe joint of valve seat inner side, described B Sealing (7) is for being connected in the source capsule rapid pipe joints of ventilating of stainless steel two outside valve seat.
4. a kind of eccentric-butterfly-valve for gas pipeline as claimed in claim 1, is characterized in that: described purge hole (41) has a plurality of, is evenly arranged on annular scavenging conduit (4).
5. a kind of eccentric-butterfly-valve for gas pipeline as claimed in claim 1, is characterized in that: the angle that described main body (31) both ends of the surface limit portion is tilted to extension the crossing angle that forms is 30 ~ 60 °.
6. a kind of eccentric-butterfly-valve for gas pipeline as claimed in claim 1, is characterized in that: described seal (32) is welding with main body (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345389.9U CN203906833U (en) | 2014-06-26 | 2014-06-26 | Eccentric butterfly valve for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345389.9U CN203906833U (en) | 2014-06-26 | 2014-06-26 | Eccentric butterfly valve for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906833U true CN203906833U (en) | 2014-10-29 |
Family
ID=51781114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345389.9U Expired - Fee Related CN203906833U (en) | 2014-06-26 | 2014-06-26 | Eccentric butterfly valve for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906833U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731078A (en) * | 2014-12-11 | 2016-07-06 | 浙江医药股份有限公司新昌制药厂 | Butterfly valve, sterile powder conveying device composed of multiple butterfly valves and use method of sterile powder conveying device |
| CN105889525A (en) * | 2016-06-22 | 2016-08-24 | 河北科技大学 | Online dust removal type butterfly valve for blast furnace gas pipeline |
-
2014
- 2014-06-26 CN CN201420345389.9U patent/CN203906833U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731078A (en) * | 2014-12-11 | 2016-07-06 | 浙江医药股份有限公司新昌制药厂 | Butterfly valve, sterile powder conveying device composed of multiple butterfly valves and use method of sterile powder conveying device |
| CN105889525A (en) * | 2016-06-22 | 2016-08-24 | 河北科技大学 | Online dust removal type butterfly valve for blast furnace gas pipeline |
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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: 20141029 Termination date: 20150626 |
|
| EXPY | Termination of patent right or utility model |