CN2823711Y - Valve rod jointing structure for butterfly valve - Google Patents
Valve rod jointing structure for butterfly valve Download PDFInfo
- Publication number
- CN2823711Y CN2823711Y CN 200520044670 CN200520044670U CN2823711Y CN 2823711 Y CN2823711 Y CN 2823711Y CN 200520044670 CN200520044670 CN 200520044670 CN 200520044670 U CN200520044670 U CN 200520044670U CN 2823711 Y CN2823711 Y CN 2823711Y
- Authority
- CN
- China
- Prior art keywords
- valve rod
- hole
- pin
- butterfly plate
- 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
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Abstract
A kind of valve rod linkage structure of butterfly valve, comprise that one has the butterfly plate at the front surface and the back side, be provided with valve rod base at the described butterfly plate back side, be parallel to the butterfly plate front surface on the described valve rod base and traversed valve rod hole, a valve rod is located in the described valve rod hole and by fixing pin and is fixed in the described valve rod hole; It is characterized in that described valve rod hole wall is provided with pin-and-hole, described pin-and-hole longitudinal center line is parallel to described butterfly plate plane, and described pin-and-hole is vertical with described valve rod hole; Be formed with arc-shaped concave corresponding to described pin-and-hole place on the described valve rod axial length; Described fixing pin is a taper pin, and described taper pin passes the arc-shaped concave on described valve rod hole wall, described pin-and-hole and the described valve rod.This valve rod linkage structure is simple, connection is reliable, easy to process, and valve rod or the butterfly plate of changing easy to replace and maintain, and is fixing simultaneously good with the pin stressing conditions, long service life.
Description
Technical field
The utility model relates to a kind of butterfly valve, relates to the valve rod linkage structure that is used to connect butterfly plate and valve rod particularly.
Background technique
Existing reed valve is widely used in industries such as oil, chemical industry, metallurgy, electric power, municipal engineering, in system, plays by reaching regulating action, and be optimal open-shut device in the pipeline.Butterfly valve has keying rapidly, and butterfly plate revolves to turn 90 degrees and can reach the keying purpose.Simple in structure, light-duty material-saving, easy accessibility are realized far distance automatic chemical control system easily.
In butterfly valve, valve rod and butterfly plate are fixed together, by the keying of rotation drive butterfly plate on valve seat of valve rod.In the existing reed valve, the butterfly plate back side is provided with valve rod base, and valve rod must pass the hole on the valve rod base earlier, gets out pin-and-hole again on valve rod base and valve rod in the lump, and pin inserts in the pin-and-hole so that butterfly plate and valve rod are fixed together.This processing method is complicated, need manufacture, and particularly when the butterfly plate size is big, processes more complicated.Simultaneously, the pin that is used for fixing is subjected to the effect of shearing force all the time in the valve rod rotation process, is easy to fracture, causes butterfly plate and valve seat accurately to seal the most at last.In addition, because existing butterfly plate is fixedly connected with being connected of valve rod,, bring great inconvenience then for the maintenance and the replacing of butterfly plate or valve rod in case connect.
The model utility content
The purpose of this utility model is to provide a kind of valve rod linkage structure of butterfly valve, and it is simple in structure, connection is reliable, easy to process, and valve rod easy to replace and maintain or butterfly plate, and is fixing simultaneously good with the pin stressing conditions, long service life.
For this reason, the butterfly valve valve rod linkage structure that the utility model provides comprises that one has the butterfly plate at the front surface and the back side, be provided with valve rod base at the described butterfly plate back side, be parallel to the butterfly plate front surface on the described valve rod base and traversed valve rod hole, a valve rod is located in the described valve rod hole and by fixing pin and is fixed in the described valve rod hole; It is characterized in that described valve rod hole wall is provided with pin-and-hole, described pin-and-hole longitudinal center line is parallel to described butterfly plate plane, and described pin-and-hole is vertical with described valve rod hole; Be formed with arc-shaped concave corresponding to described pin-and-hole place on the described valve rod axial length; Described fixing pin is a taper pin, and described taper pin passes the arc-shaped concave on described valve rod hole wall, described pin-and-hole and the described valve rod.
Preferably, described valve rod hole wall is provided with the valve rod hole wall of the wall thickness of pin-and-hole part greater than remaining part.
Preferably, described valve rod hole wall is provided with two described pin-and-holes.
Preferably, the described pin-and-hole center distance of leaving the described butterfly plate back side equals the diameter of described valve rod hole.
Compared with prior art, butterfly valve valve rod linkage structure of the present utility model can make each parts, and separately processing and requirement on machining accuracy are low, rather than resemble the prior art and need join work to each parts in preliminary assembling back, therefore easy to process, cooperate closely reliable, and each parts can dismantle, exchange, and is convenient to maintenance.Simultaneously, the longitudinal center line of fixing pin is parallel to the butterfly plate plane, and when valve rod drove butterfly plate and rotates, fixing pin only was subjected to torsional interaction like this, rather than resembles the effect that is subjected to cutting shearing the prior art, and therefore, the fixing pin stressing conditions is good, long service life.
Description of drawings
Fig. 1 is the valve rod linkage structure partial cutaway diagrammatic sketch of the utility model butterfly valve;
Fig. 2 is the sectional view of middle butterfly plate embodiment illustrated in fig. 1.
Embodiment
See also shown in Figure 1, butterfly valve valve rod linkage structure of the present utility model comprises that one has the butterfly plate 1 at the front surface 11 and the back side 12, be provided with valve rod base 2 at the butterfly plate back side, being parallel to the butterfly plate front surface on the valve rod base has traversed valve rod hole 21, one valve rods 3 and is located in the described valve rod hole 21 and by fixing pin 4 and is fixed thereon.
In the utility model, also be provided with pin-and-hole 211 on the described valve rod hole wall, the distance L that described pin-and-hole center O is left the described butterfly plate back side 12 equals described valve rod hole diameter D, and described pin-and-hole longitudinal center line is parallel to described butterfly plate plane.Yet, those having ordinary skill in the art will appreciate that, the distance L that the pin-and-hole center O is left the described butterfly plate back side 12 also can be greater than or less than described valve rod hole diameter, as long as and can be provided with an arc pin-and-hole and its on the valve rod hole wall axially axial vertical with valve rod hole.
In the utility model, on valve rod 3 axial lengths, be formed with arc-shaped concave 31 corresponding to pin-and-hole 211 places; Fixing pin 4 passes the valve rod hole wall, is inserted between the arc-shaped concave 31 and pin-and-hole 211 of valve rod.Fixing pin 4 is taper pins, and its inclined-plane contacts with the valve rod arc-shaped concave, can find the location automatically accurately, so not only cooperates tight, safe and reliable.
In the utility model, weaken its intensity in order to prevent the valve rod hole wall on the valve rod base 2 owing to being provided with pin-and-hole 211, can thicken the wall thickness 212 that is provided with pin-and-hole 211 places partly.
In the utility model, can also can be provided with the pin-and-hole (not shown) again being provided with two pin-and-holes 211 (as shown in the figure) near place, valve rod hole top in the valve rod hole bottom.The number of pin-and-hole, size depend on the butterfly plate diameter that is connected.
By valve rod linkage structure of the present utility model, when needs are connected in valve rod on the butterfly plate, can on the Butterfly plate valve pole socket, process foregoing pin-and-hole 211,, utilize the existing fixed pin to mill out an inclined-plane thereon at valve rod axial length and pin-and-hole corresponding position processing arc-shaped concave 31.Yet, valve rod 3 is penetrated in the valve rod hole 3, arc-shaped concave 31 facing to pin-and-hole 211, is squeezed into taper pin, its inclined-plane is contacted with the valve rod arc-shaped concave, taper pin is capturing position automatically, can realize being connected of valve rod and butterfly plate.When needing repairing valve rod or butterfly plate, that only need withdraw from that taper pin can realize butterfly plate and valve rod separates convenient disassembly.Simultaneously, the longitudinal center line of taper pin is parallel to the butterfly plate plane, and when valve rod drove the butterfly plate rotation, taper pin is stressed to be moment of torsion, so stressing conditions is good, long service life.
Claims (4)
1. the valve rod linkage structure of a butterfly valve, comprise that one has the butterfly plate at the front surface and the back side, be provided with valve rod base at the described butterfly plate back side, be parallel to the butterfly plate front surface on the described valve rod base and traversed valve rod hole, a valve rod is located in the described valve rod hole and by fixing pin and is fixed in the described valve rod hole; It is characterized in that described valve rod hole wall is provided with pin-and-hole, described pin-and-hole longitudinal center line is parallel to described butterfly plate plane, and described pin-and-hole is vertical with described valve rod hole; Be formed with arc-shaped concave corresponding to described pin-and-hole place on the described valve rod axial length; Described fixing pin is a taper pin, and described taper pin passes the arc-shaped concave on described valve rod hole wall, described pin-and-hole and the described valve rod.
2. valve rod linkage structure as claimed in claim 1 is characterized in that, described valve rod hole wall is provided with the valve rod hole wall of the wall thickness of pin-and-hole part greater than remaining part.
3. valve rod linkage structure as claimed in claim 1 is characterized in that, described valve rod hole wall is provided with two described pin-and-holes.
4. valve rod linkage structure as claimed in claim 1 is characterized in that, the distance that the described butterfly plate back side is left at described pin-and-hole center equals the diameter of described valve rod hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044670 CN2823711Y (en) | 2005-08-31 | 2005-08-31 | Valve rod jointing structure for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520044670 CN2823711Y (en) | 2005-08-31 | 2005-08-31 | Valve rod jointing structure for butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2823711Y true CN2823711Y (en) | 2006-10-04 |
Family
ID=37032825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520044670 Expired - Fee Related CN2823711Y (en) | 2005-08-31 | 2005-08-31 | Valve rod jointing structure for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2823711Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697178A (en) * | 2013-12-31 | 2014-04-02 | 天津祥嘉流体控制系统有限公司 | Disc and valve stem positioning structure |
| CN104832664A (en) * | 2015-04-10 | 2015-08-12 | 阀安格水处理系统(太仓)有限公司 | Pin column type butterfly plate connecting structure |
| CN107448623A (en) * | 2017-09-30 | 2017-12-08 | 山西好利阀机械制造有限公司 | Eccentric-butterfly-valve attachment structure |
-
2005
- 2005-08-31 CN CN 200520044670 patent/CN2823711Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697178A (en) * | 2013-12-31 | 2014-04-02 | 天津祥嘉流体控制系统有限公司 | Disc and valve stem positioning structure |
| CN104832664A (en) * | 2015-04-10 | 2015-08-12 | 阀安格水处理系统(太仓)有限公司 | Pin column type butterfly plate connecting structure |
| CN107448623A (en) * | 2017-09-30 | 2017-12-08 | 山西好利阀机械制造有限公司 | Eccentric-butterfly-valve attachment structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGNAN VALVES CO., LTD. Free format text: FORMER OWNER: HUANG ZUOXING Effective date: 20081107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081107 Address after: No. 616, Airport Avenue, Wenzhou, Zhejiang: 325013 Patentee after: Jiangnan Valve Co., Ltd. Address before: No. 616, Airport Avenue, Wenzhou, Zhejiang: 325013 Patentee before: Huang Zuoxing |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061004 Termination date: 20130831 |