CN204477328U - A kind of high pressure butterfly valve - Google Patents
A kind of high pressure butterfly valve Download PDFInfo
- Publication number
- CN204477328U CN204477328U CN201520109827.6U CN201520109827U CN204477328U CN 204477328 U CN204477328 U CN 204477328U CN 201520109827 U CN201520109827 U CN 201520109827U CN 204477328 U CN204477328 U CN 204477328U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- butterfly plate
- shaft coupling
- 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.)
- Withdrawn - After Issue
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- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A kind of high pressure butterfly valve, comprise valve body, upper valve rod, lower valve rod and large butterfly plate, upper valve rod is connected with drive unit by shaft coupling, empty set one small valve-rod in upper valve rod, small valve-rod one end is fixedly connected with shaft coupling, the other end is fixedly connected with a little butterfly plate coordinated with little valve base sealing, upper valve rod upper-end surface is provided with groove, shaft coupling lower end surface is provided with a fan-shaped boss, fan-shaped boss can rotate and carry out stroke limit by the ladder surface of groove in described groove, the concave surface formed after the convex surface that upper valve rod upper-end surface is formed after being provided with groove and shaft coupling lower end surface are provided with fan-shaped boss abuts against.The technical program greatly reduces valve opening moment of torsion, and make valve opening more laborsaving, cost is saved more.
Description
Technical field
The utility model relates to a kind of butterfly valve, particularly relates to a kind of heavy caliber high pressure butterfly valve.
Background technique
Existing butterfly valve is primarily of valve body, valve rod and butterfly plate composition, and be provided with valve seat in valve body, butterfly plate and valve rod fix, and it is interior and can rotate that valve rod radial direction is installed on valve body, and butterfly plate can match with valve seat and seal.When butterfly valve is used for large diameter pipeline, particularly under the operating mode of high pressure, the pressure that medium in pipeline produces butterfly plate is very large, when opening, the moment of torsion that valve rod bears is very large, need moment of torsion during valve opening also very large, the output torque of supporting drive unit is corresponding also very large, causes the huge structure of valve.
Model utility content
In order to overcome the above-mentioned shortcoming of existing butterfly valve, the utility model provides a kind of structure simple and the high pressure butterfly valve that open and close torque is little.
The utility model solves the technological scheme that its technical problem adopts, a kind of high pressure butterfly valve, comprise valve body, upper valve rod, lower valve rod and large butterfly plate, valve body is provided with valve seat, large butterfly plate is fixed with upper valve rod and lower valve rod, upper valve rod and lower valve rod coaxially arrange and can rotate relative to valve body, large butterfly plate coordinates with valve base sealing, large butterfly plate has through hole and is provided with little valve seat, upper valve rod is connected with drive unit by shaft coupling, empty set one small valve-rod in upper valve rod, small valve-rod one end is fixedly connected with shaft coupling, the other end is fixedly connected with a little butterfly plate coordinated with little valve base sealing, upper valve rod upper-end surface is provided with groove, shaft coupling lower end surface is provided with a fan-shaped boss, fan-shaped boss can rotate and carry out stroke limit by the ladder surface of groove in described groove, the concave surface formed after the convex surface that upper valve rod upper-end surface is formed after being provided with groove and shaft coupling lower end surface are provided with fan-shaped boss abuts against.
The angle that fan-shaped boss rotates in a groove is 20 ° ~ 70 °.
The beneficial effects of the utility model are:
1) only need 1 drive unit just can drive the keying of little butterfly plate and large butterfly plate, structure is simple, and there will not be interference phenomenon.
2) structure of upper valve rod upper-end surface recessing, by the control to groove institute angulation, be free to design according to actual conditions, flexibility ratio is high, wide application.
3) by first opening little butterfly plate pressure release, then open the mode of large butterfly plate, greatly reduce valve opening moment of torsion, make in valve opening economizes more, cost is saved more.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment;
Fig. 2 is A-A sectional view in Fig. 1.
In figure: 1. shaft coupling; 2. upper valve rod; 3. small valve-rod; 4. little valve seat; 5. little butterfly plate; 6. large butterfly plate; 7. lower valve rod; 8. valve seat; 9. valve body; 101. fan-shaped boss; 201. groove.
Embodiment
As Fig. 1, shown in 2, a kind of high pressure butterfly valve, comprise valve body 9, upper valve rod 2, lower valve rod 7 and large butterfly plate 6, valve body 9 is provided with valve seat 8, large butterfly plate 6 is fixed with upper valve rod 2 and lower valve rod 7, upper valve rod 2 and lower valve rod 7 coaxially arrange and can rotate relative to valve body 9, large butterfly plate 6 is sealed and matched with valve seat 8, large butterfly plate 6 has through hole and is provided with little valve seat 4, upper valve rod 2 is connected with drive unit by shaft coupling 1, empty set one small valve-rod 3 in upper valve rod 2, small valve-rod 3 one end is fixedly connected with shaft coupling 1, the other end is fixedly connected with a little butterfly plate 5 be sealed and matched with little valve seat 4, upper valve rod 2 upper-end surface is provided with groove 201, shaft coupling 1 lower end surface is provided with a fan-shaped boss 101, fan-shaped boss 101 can rotate and carry out stroke limit by the ladder surface of groove 201 in described groove 201, the concave surface formed after the convex surface that upper valve rod 2 upper-end surface is formed after being provided with groove 201 and shaft coupling lower end surface are provided with fan-shaped boss 101 abuts against, the angle that fan-shaped boss 101 rotates in groove 201 is 20 ° ~ 70 °.
During valve opening, drive unit drives shaft coupling 1 to rotate, and namely the fan-shaped boss 101 of shaft coupling 1 lower end surface rotates in groove 201, and then drive small valve-rod 3 to rotate, its angle of rotating is 20 ° ~ 70 °, can design, so just achieve the unlatching of little butterfly plate 5 according to different operating modes; When the left side of fan-shaped boss 101 abuts with the ladder surface of groove 201, the fan-shaped boss 101 of shaft coupling 1 starts to drive large butterfly plate 6 to rotate, and by the driving of drive unit, can realize 90 ° of rotations of large butterfly plate 6, thus open large butterfly plate 6.Owing to first opening the release of little butterfly plate 5, and then open large butterfly plate 6, the pressure that medium acts on little butterfly plate 5 is less, little butterfly plate 5 is easily opened, after little butterfly plate 5 is opened, medium is by valve body 9, and the pressure reduction of large butterfly plate 6 both sides reduces, the pressure that medium acts on large butterfly plate 6 reduces, and makes to open large butterfly plate 6 laborsaving.
In like manner, during valve closing, drive unit drives shaft coupling 1 to rotate, thus drive the rotation of little butterfly plate 5, realize the closedown of little butterfly plate 5, when the right side of fan-shaped boss 101 abuts with the ladder surface of groove 201, the fan-shaped boss 101 of shaft coupling 1 starts to drive large butterfly plate 6 to rotate backward, thus closes large butterfly plate 6.
Claims (2)
1. a high pressure butterfly valve, comprise valve body, upper valve rod, lower valve rod and large butterfly plate, valve body is provided with valve seat, large butterfly plate is fixed with upper valve rod and lower valve rod, upper valve rod and lower valve rod coaxially arrange and can rotate relative to valve body, large butterfly plate coordinates with valve base sealing, large butterfly plate has through hole and is provided with little valve seat, it is characterized in that: described upper valve rod is connected with drive unit by shaft coupling, empty set one small valve-rod in described upper valve rod, described small valve-rod one end is fixedly connected with shaft coupling, the other end is fixedly connected with a little butterfly plate coordinated with described little valve base sealing, described upper valve rod upper-end surface is provided with groove, described shaft coupling lower end surface is provided with a fan-shaped boss, described fan-shaped boss can rotate and carry out stroke limit by the ladder surface of described groove in described groove, the concave surface formed after the convex surface formed after described upper valve rod upper-end surface is provided with groove and shaft coupling lower end surface are provided with fan-shaped boss abuts against.
2. high pressure butterfly valve according to claim 1, is characterized in that: the angle that described fan-shaped boss rotates in described groove is 20 ° ~ 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109827.6U CN204477328U (en) | 2015-02-15 | 2015-02-15 | A kind of high pressure butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109827.6U CN204477328U (en) | 2015-02-15 | 2015-02-15 | A kind of high pressure butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204477328U true CN204477328U (en) | 2015-07-15 |
Family
ID=53633121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520109827.6U Withdrawn - After Issue CN204477328U (en) | 2015-02-15 | 2015-02-15 | A kind of high pressure butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204477328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN110332320A (en) * | 2019-08-02 | 2019-10-15 | 许津元 | A kind of anti-blocking mouth butterfly valve |
-
2015
- 2015-02-15 CN CN201520109827.6U patent/CN204477328U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN104613183B (en) * | 2015-02-15 | 2017-07-18 | 江苏神通阀门股份有限公司 | A kind of high pressure butterfly valve |
| CN110332320A (en) * | 2019-08-02 | 2019-10-15 | 许津元 | A kind of anti-blocking mouth butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150715 Effective date of abandoning: 20171114 |