CN201582415U - Closing and self-locking structure for butterfly valve - Google Patents
Closing and self-locking structure for butterfly valve Download PDFInfo
- Publication number
- CN201582415U CN201582415U CN2009202832948U CN200920283294U CN201582415U CN 201582415 U CN201582415 U CN 201582415U CN 2009202832948 U CN2009202832948 U CN 2009202832948U CN 200920283294 U CN200920283294 U CN 200920283294U CN 201582415 U CN201582415 U CN 201582415U
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- China
- Prior art keywords
- shift fork
- butterfly valve
- piston rod
- valve
- self
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- Expired - Fee Related
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Abstract
The utility model discloses a closing and self-locking structure for a butterfly valve. The structure comprises a power cylinder, a sliding block, a shift fork, a key, a valve shaft, a butterfly valve and a piston rod, wherein the power cylinder is positioned on one side of the end surface of the butterfly valve, and the axis of the power cylinder is perpendicular to the end surface of the butterfly valve; the sliding block is hinged with the end part of the piston rod; the shift fork and the valve shaft are connected with each other; the piston rod in the power cylinder is matched with straight flutes in the shift fork through pins on the sliding block and drives the valve shaft to rotate so as to drive the butterfly valve to be closed or opened. And two communicated straight flutes with an included angle of 130 degrees to 140 degrees therebetween are formed on the plate face of the shift fork. When the piston rod moves to the right, the shift fork drives the valve shaft to rotate anticlockwise, and when the shift fork rotates by 45 degrees relative to the end surface of the butterfly valve, the butterfly valve is closed, the pins on two sides of the sliding block are positioned in the straight flute at the turning point of the end part of the shift fork, the straight flutes are parallel to the piston rod, and the pins on the sliding block hold down the straight flute edges of the shift fork to form the self-locking structure. The closing and self-locking structure can achieve automatic locking when the butterfly valve is closed, has the advantages of simple structure and reliable locking, and is suitable for matching with butterfly valves of various specifications.
Description
Technical field
The utility model relates to a kind of valve control structure, auto lock structure after particularly a kind of butterfly valve closure.
Background technique
Valve is the supporting control unit of pipeline, the flow size of medium in the valve opening degree decision institute distribution pipes, and the closed tight degree of valve is represented its sealability index quality.In order to realize valve stable for extended periods of time closure, the valve of different structure form has different closed self-locking structures.For example, stop valve, gate valve all utilize the self-locking property of valve rod screw mechanism to realize closed and locked.Butterfly valve is special relatively because of structure, and its closed self-locking structure adopts pneumatic usually or the drive unit pressurize of surging realizes locking, and this kind is simple in structure, can accomplish closed and locked fully.But, this locking mechanism also has unreasonable part, is embodied in the closed and locked requirement that can not satisfy under the full operating mode, and particularly the working condition requirement valve is in closed state for a long time, adopt the pneumatic of prior art or the drive unit maintenance running for a long time of surging, the pressurize cost is big.In addition, because of outage causes the decline of prior art systems oil pressure or air pressure, make and surge or pneumatic actuating device loses necessary power and the destructive valve closed state.
The model utility content
The utility model is primarily aimed at the deficiencies in the prior art, propose a kind of simple in structure, reliable lock, the closed self-locking structure of the low butterfly valve of operating cost.
The utility model is achieved through the following technical solutions technical goal.
The closed self-locking structure of butterfly valve, it comprises the housing that is connected with ram, and slide block, shift fork, key, valve shaft, butterfly valve and piston rod.Described ram is positioned at butterfly valve end face one side, and the end face of its axis and butterfly valve is perpendicular.Described slide block is a rectangular block, and the end of slide block and piston rod is hinged.Described shift fork is connected with valve shaft by key, and the piston rod in the ram drives valve shaft by slide block, shift fork.Its improvements are: described shift fork is the long slab strip, plate face middle part be provided with by two be uneven in length, wide straight trough that direction is different forms reclinate groove, the pin that the slide block both sides that are hinged on the piston rod are provided with slides along this groove.
Crooked groove on the fork plate face is made up of the straight trough that turns round in straight trough that is positioned at the shift fork middle part and end in the said structure, angle α=130 ° between two grooves～140 °.
The utility model compared with prior art has following good effect:
1, it is simple in structure, easy to manufacture to form self-locking by the slide block that is hinged on curved slot in the shift fork and the piston rod;
2, the dish valve is in closed form when shift fork and dish valve end face are at 45, and the straight trough of shift fork end corner parallels with piston rod, and no active force affacts on the fork on the slide block, shift fork position stability, reliable lock;
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a shift fork structure enlarged diagram.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings below.
The closed self-locking structure of butterfly valve shown in the accompanying drawing 1, it comprises the housing 1 that links to each other with ram 8, and slide block 2, shift fork 3, key 4, valve shaft 5, butterfly valve 6 and piston rod 7.Described ram 8 is power plant, and ram 8 is positioned at butterfly valve 6 left sides one side, and the end face of its axis and butterfly valve 6 is perpendicular.Described slide block 2 is a rectangular block, and slide block 2 is hinged with the end of piston rod 7.Shift fork 3 is connected with valve shaft 5 by key 4, shift fork 3 is the long slab strip, and its plate face is provided with two straight troughs that are connected, and two straight troughs are not on same straight line, angle in the present embodiment between two straight troughs is 135 °, and the straight trough that the straight trough that is positioned at plate face middle part turns round than the end is long.The pin that slide block 2 both sides that connect on the piston rod 7 are provided with moves along the straight trough in the shift fork 3, thereby it is closed or open with butterfly valve 6 to drive valve shaft 5.When piston rod 7 moved right, fork 3 drove valve shaft 5 and rotates counterclockwise, and when the end face of shift fork 3 relative butterfly valves 6 went to 45 °, butterfly valve 6 was realized closed.At this moment, the pin on the slide block 2 is arranged in the straight trough that turns round in shift fork 3 ends, and this position straight trough just in time parallels with piston rod 7, as long as the pin on the slide block 2 is in the straight trough section of turning round the fork end, slide block 2 all is among the situation of locking shift fork 3.
The utility model realizes that automatically valve is closed and locked when butterfly valve 6 closed procedures put in place, even descend on a small quantity because of outage causes system oil pressure or air pressure, also can maintain the lock status for a long time.Butterfly valve 6 opening operations are equally very simple, as long as piston rod 7 is moved to the left, drives the straight trough that turns round slide block 2 disengaging shift forks 3 ends and just cancel the self-locking situation.The utility model self-locking is simple in structure, reliable lock, unlocking operation are easy.
Claims (2)
1. the closed self-locking structure of a butterfly valve, it comprises the housing (1) that is connected with ram (8), and slide block (2), shift fork (3), key (4), valve shaft (5), butterfly valve (6) and piston rod (7); Described ram (8) is positioned at butterfly valve (6) end face one side, and the end face of its axis and butterfly valve (6) is perpendicular; Described slide block (2) is a rectangular block, and slide block (2) is hinged with the end of piston rod (7); Described shift fork (3) is connected with valve shaft (5) by key (4), and the piston rod (7) in the ram (8) drives valve shaft (5) by slide block (2), shift fork (3); It is characterized in that: described shift fork (3) is the long slab strip, plate face middle part be provided with by two be uneven in length, wide straight trough that direction is different forms reclinate groove, the pin that slide block (2) both sides that are hinged on the piston rod (7) are provided with slides along this groove.
2. the closed self-locking structure of butterfly valve according to claim 1 is characterized in that: crooked groove on described shift fork (3) the plate face, form angle α=130 ° between two grooves～140 ° by the straight trough that turns round in straight trough that is positioned at shift fork (3) middle part and end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202832948U CN201582415U (en) | 2009-12-30 | 2009-12-30 | Closing and self-locking structure for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202832948U CN201582415U (en) | 2009-12-30 | 2009-12-30 | Closing and self-locking structure for butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582415U true CN201582415U (en) | 2010-09-15 |
Family
ID=42724413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202832948U Expired - Fee Related CN201582415U (en) | 2009-12-30 | 2009-12-30 | Closing and self-locking structure for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673956A (en) * | 2012-05-21 | 2012-09-19 | 典发食品（苏州）有限公司 | Linear motion turning device |
| CN103821036A (en) * | 2014-03-14 | 2014-05-28 | 广州华工环源绿色包装技术有限公司 | Turnover device for feeding and discharging materials |
-
2009
- 2009-12-30 CN CN2009202832948U patent/CN201582415U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673956A (en) * | 2012-05-21 | 2012-09-19 | 典发食品（苏州）有限公司 | Linear motion turning device |
| CN103821036A (en) * | 2014-03-14 | 2014-05-28 | 广州华工环源绿色包装技术有限公司 | Turnover device for feeding and discharging materials |
| CN103821036B (en) * | 2014-03-14 | 2016-01-13 | 广州华工环源绿色包装技术有限公司 | Fill out feeding turning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20101230 |