CN201434092Y - Large offset butterfly valve - Google Patents
Large offset butterfly valve Download PDFInfo
- Publication number
- CN201434092Y CN201434092Y CN2009201279577U CN200920127957U CN201434092Y CN 201434092 Y CN201434092 Y CN 201434092Y CN 2009201279577 U CN2009201279577 U CN 2009201279577U CN 200920127957 U CN200920127957 U CN 200920127957U CN 201434092 Y CN201434092 Y CN 201434092Y
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- Prior art keywords
- valve
- valve plate
- plate
- butterfly
- butterfly valve
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Abstract
The utility model discloses a large offset butterfly valve, which comprises a butterfly valve body, the inside of the butterfly valve body is provided with a valve plate and a valve rod; the characteristics of the utility model are as follows: one side of the tube wall of the valve body is provided with a valve plate offset cavity, the position and the size of the valve plate offset cavity correspond to the valve plate, the valve plate offset cavity can accommodate the valve plate under the circumstance that the valve plate turns 90 DEG and in a full-open state; the valve rod is located at oneside of the tube wall, the valve rod is connected with one end of the valve plate. The large offset butterfly valve solves the problem that the valve plate blocks the flow area at the center, and thevalve plate is located in the valve plate offset cavity at one side of the tube wall when the valve is in full-open state, therefore, the obtained flow area closes to full-flow, the flow resistance is small, the flowing capacity is larger, the phenomenon that the medium is blocked and the valve plate is eroded is reduced.
Description
Technical field
The utility model relates to a kind of pipeline valve, relates in particular to a kind of big biasing butterfly valve that the good and blocked portion of the unimpeded performance that be fit to require circulation requires less occasion.
Background technique
Common butterfly valve is rapid because of its open-close convenient, fluid resistance is little, simple in structure and adjusting function is good is used widely.The butterfly valve of prior art, as shown in Figure 1, valve plate is in the centre of valve body, driving valve plate when the valve rod that is connected with the actuator of outside rotates rotates synchronously, when the flow direction of the axis of valve plate and valve body inner fluid was vertical, valve body was closed by valve plate, and fluid can not pass through; When the axis of valve plate was consistent with the flow direction of valve body inner fluid, valve body was opened, and fluid can pass through valve plate.When the axis of valve plate was consistent with the flow direction of valve body inner fluid, promptly valve plate was in 90 ° of standard-sized sheets when the centre of valve body, and moment is little.But valve plate has taken part to circulation area in the central authorities of valve body, makes the circulation area of valve body reduce 20%-30%, has increased the flow resistance of medium, has reduced negotiability, and causes the erosion to valve plate of stifled card phenomenon and high-velocity fluid easily.The butterfly valve of prior art, can expanded by heating not stuck in order to make valve plate, just the gap between valve plate and the valve body is done greatly, but the leakage of valve is increased, and reduce usability.
Summary of the invention
The purpose of this utility model provides a kind of suitable flow resistance and requires less and difficult stifled card and reduce the washed out a kind of big biasing butterfly valve of valve plate.
Technical solution of the present utility model is: a kind of big biasing butterfly valve, comprise butterfly valve body, in butterfly valve body, be provided with valve plate and valve rod, it is characterized in that: tube wall one side at valve body is provided with valve plate biasing chamber, the position in valve plate biasing chamber is corresponding with valve plate with size, be under the full open mode after valve plate rotates 90 °, valve plate biasing chamber can hold valve plate; Described valve rod is positioned at tube wall one side, and valve rod is connected with an end of valve plate.
Further feature is: described valve plate biasing chamber semicircular in shape.
Valve plate is provided with the arc cavity.
Described valve rod is cylindric.
Big biasing butterfly valve of the present utility model with respect to prior art, has following characteristics:
1, solved valve plate and stopped the circulation area problem in central authorities, and valve valve plate when standard-sized sheet is positioned at a side of tube wall, therefore the circulation area that obtains is near all-pass, and flow resistance is little, and negotiability is bigger, has reduced the blocked portion of medium and valve plate by the fluid erosion phenomenon.
2,,, contact with valve body behind the valve plate expanded by heating and stuck so it does not resemble other butterfly valve under the medium situation of high temperature because the sealing between valve body and the valve plate is a kind of mode of being close between a kind of and the face.(butterfly valve of other structure is just done the gap between valve plate and the valve body greatly in order to make valve plate can expanded by heating not stuck, but the leakage of valve is increased, and reduces usability.)
Description of drawings
Fig. 1 is the butterfly valve structure schematic representation of prior art;
Fig. 2 is the big biasing butterfly valve structure of a utility model schematic representation;
Fig. 3 is that the big biasing butterfly valve of the utility model is in the open mode schematic representation.
Embodiment
Among Fig. 2,3, big biasing butterfly valve of the present utility model, comprise butterfly valve body 1, in butterfly valve body 1, be provided with valve plate 3 and valve rod 4, when improving, it valve plate biasing chamber 2 is set in the tube wall side of valve body 1, valve plate biasing chamber 2 semicirculars in shape, and the position in valve plate biasing chamber 2 is corresponding with valve plate 3 with size, be under the full open mode (rotate usually 90 ° or near 90 °) after valve plate 3 rotates, valve plate biasing chamber 2 can hold valve plate 3; An end that is positioned at the valve rod 4 of tube wall one side is connected with an end of valve plate 3, and the other end stretches out butterfly valve body 1, and with join actuator outward and be connected; Valve rod 4 be centered close to the side that valve body 1 is positioned at tube wall one side, avoid medium channel, valve rod 4 is positioned at the edge of valve plate 3.
When valve rod 4 is joined the following rotation of actuator's drive outside, valve rod 4 drives valve plate 3 and rotates synchronously to open or close, because valve rod 4 is connected with an end of valve plate 3, valve plate 3 is around valve rod 4 rotations that are positioned at tube wall one side, valve plate 3 rotates 90 ° and is under the full open mode, and whole valve plate 3 enters in the valve plate biasing chamber 2, and valve plate 3 does not take circulation area, avoid medium channel fully, formed a flow area near all-pass.
During concrete the making, directly process sealing surface of seat on valve body 1, valve rod 4 forms a gyration center by the valve plate action of system's tube wall one side by the biasing gyration center and the valve plate of valve body 1.When valve plate 3 was opened 90 ° of straight maximum openings, the valve plate 3 of this moment was positioned at the valve plate biasing chamber 2 of tube wall side.
Valve plate 3 is provided with arc cavity 5, makes valve plate 3 be big biasing large semi-circular, more can reduce flow resistance, increases negotiability.
Valve rod 4 is cylindric, makes things convenient for valve rod 4 to join actuator outside and drives rotation down.
Claims (4)
1, a kind of big biasing butterfly valve, comprise butterfly valve body (1), in butterfly valve body (1), be provided with valve plate (3) and valve rod (4), it is characterized in that: tube wall one side at valve body (1) is provided with valve plate biasing chamber (2), the position in valve plate biasing chamber (2) is corresponding with valve plate (3) with size, be under the full open mode after valve plate (3) rotates, valve plate biasing chamber (2) can hold valve plate (3); Described valve rod (4) is positioned at tube wall one side, and valve rod (4) is connected with an end of valve plate (3).
2, big biasing butterfly valve according to claim 1 is characterized in that: described valve plate biasing chamber (2) semicircular in shape.
3, big biasing butterfly valve according to claim 1 and 2, it is characterized in that: valve plate (3) is provided with arc cavity (5).
4, big biasing butterfly valve according to claim 1 and 2 is characterized in that: described valve rod (4) is for cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201279577U CN201434092Y (en) | 2009-07-08 | 2009-07-08 | Large offset butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201279577U CN201434092Y (en) | 2009-07-08 | 2009-07-08 | Large offset butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201434092Y true CN201434092Y (en) | 2010-03-31 |
Family
ID=42052900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201279577U Expired - Fee Related CN201434092Y (en) | 2009-07-08 | 2009-07-08 | Large offset butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201434092Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081184A (en) * | 2019-04-02 | 2019-08-02 | 中国北方发动机研究所(天津) | A kind of valve board structure of flapper valve |
| CN110094553A (en) * | 2019-04-02 | 2019-08-06 | 中国北方发动机研究所(天津) | A kind of flapper valve design |
-
2009
- 2009-07-08 CN CN2009201279577U patent/CN201434092Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081184A (en) * | 2019-04-02 | 2019-08-02 | 中国北方发动机研究所(天津) | A kind of valve board structure of flapper valve |
| CN110094553A (en) * | 2019-04-02 | 2019-08-06 | 中国北方发动机研究所(天津) | A kind of flapper valve design |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chongqing Hualin Auto-Control Instrument Co., Ltd. Assignor: Zhou Yongguo Contract record no.: 2010500000054 Denomination of utility model: Large offset butterfly valve Granted publication date: 20100331 License type: Exclusive License Record date: 20100913 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |