CN206257288U - A kind of butterfly valve - Google Patents
A kind of butterfly valve Download PDFInfo
- Publication number
- CN206257288U CN206257288U CN201621391731.4U CN201621391731U CN206257288U CN 206257288 U CN206257288 U CN 206257288U CN 201621391731 U CN201621391731 U CN 201621391731U CN 206257288 U CN206257288 U CN 206257288U
- Authority
- CN
- China
- Prior art keywords
- valve shaft
- valve
- butterfly plate
- shaft
- 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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- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a kind of butterfly valve, with valve body, there is valve shaft and butterfly plate in valve body, there is the drive device that valve shaft is rotated on valve body, butterfly plate is by shaft sleeve thereon in the valve shaft section loaded on described valve shaft one end, the inwall of the shaft sleeve on the butterfly plate is machined with internal spline, the external splines being engaged with internal spline is accordingly machined with the valve shaft section of the valve shaft, butterfly plate is engaged in the valve shaft section loaded on valve shaft one end by the internal spline of shaft sleeve thereon with the external splines in valve shaft one end valve shaft section, the bottom of valve shaft section is by trip bolt equipped with for preventing butterfly plate along the locating stop piece of the upper and lower play in valve shaft axial direction.The utility model changes the fit structure that pin and hole are connected by between traditional butterfly plate and valve shaft, without the pin hole processing on valve shaft and butterfly plate, intensity to valve shaft and butterfly plate will not produce weakening, and standardized inside and outside spline fitted makes valve shaft and butterfly plate maintenance change more convenient.
Description
Technical field
The utility model is related to a kind of butterfly valve.
Background technology
Butterfly valve is a kind of widely used valve, drives butterfly plate to rotate the keying for realizing valve by valve shaft.
The valve shaft and butterfly plate of butterfly valve are linked into an integrated entity by straight pin or taper bolt in the prior art, are transmitted with pin
The moment of torsion that opening/shutting valve needs.The pin-and-hole of butterfly plate and valve shaft is to coordinate processing in valve assembling process, and pin and pin-and-hole are using tight
Coordinate, pin be pressed into pin-and-hole with external force, if pin-and-hole and pin have a gap, valve can produce the vibration pin is come off when in use,
Cause the pin-and-hole processed on valve invalidation, also, valve shaft and butterfly plate also can produce larger weakening to the intensity of valve shaft and butterfly plate.
Further, since pin-and-hole is to prepare, therefore valve shaft and butterfly plate are man-to-man, it is impossible to realize the exchange of valve components, are increased
The manufacturing cost of valve, hampers the maintenance of valve.
Utility model content
A kind of attachment structure that the technical problems to be solved in the utility model is to provide between valve shaft and butterfly plate is easy to process,
Valve shaft or butterfly plate are changed convenient and will not produce the butterfly valve for weakening to the intensity of valve shaft and butterfly plate when coordinating stabilization and repairing.
In order to solve the above technical problems, a kind of butterfly valve of the utility model, with valve body, has valve shaft and butterfly plate in valve body,
There is the drive device that valve shaft is rotated, butterfly plate is loaded in the valve shaft of described valve shaft one end section by shaft sleeve thereon on valve body,
The inwall of the shaft sleeve on the butterfly plate is machined with internal spline, is accordingly machined with the valve shaft section of the valve shaft and matched with internal spline
The external splines of conjunction, butterfly plate is engaged loaded on valve by the internal spline of shaft sleeve thereon with the external splines in valve shaft one end valve shaft section
On the valve shaft section of axle one end, the bottom of valve shaft section is equipped with for preventing butterfly plate along the upper and lower play in valve shaft axial direction by trip bolt
Locating stop piece.
Using the butterfly valve of said structure, the cooperation knot that pin and hole are connected by between traditional butterfly plate and valve shaft is changed
Structure, without the pin hole processing on valve shaft and butterfly plate, it is only necessary to processed in the valve shaft section of valve shaft one end and the shaft sleeve of butterfly plate and matched
The interior external splines for closing.Because interior external splines can have a more tooth and groove, the centering of valve shaft and butterfly plate is good, can transmit larger
Moment of torsion and stress is more uniform, and spline can process it is shallower, stress concentration is smaller at tooth root, to valve shaft and butterfly plate
Intensity will not produce weakening substantially.The processing of external splines need not be carried out in butterfly plate and valve shaft assembling process in simultaneously, can be independent
Processed according to standard size respectively, it is easy to process, when valve shaft or butterfly plate are damaged needs repairing replacing, change convenient.The valve
The locating stop piece of shaft part bottom can effectively prevent butterfly plate along the upper and lower play in valve shaft axial direction.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is a kind of main cross section structure diagram of butterfly valve of the utility model.
Fig. 2 is the main structure diagram of the valve shaft in a kind of butterfly valve of the utility model.
Fig. 3 is the A direction views of Fig. 2.
Fig. 4 is the main cross section structure diagram of the valve plate in a kind of butterfly valve of the utility model.
Fig. 5 is the B of Fig. 4 to partial view.
Fig. 6 is structure enlarged diagram at I in Fig. 1.
Specific embodiment
Referring to Fig. 1-Fig. 6, butterfly valve of the present utility model, with valve body 1, there is valve shaft 2 and butterfly plate 3, valve body 1 in valve body 1
The upper drive device 4 rotated with valve shaft, butterfly plate 3 is loaded in the valve shaft of the one end of the valve shaft 2 section 6 by shaft sleeve 5 thereon,
The inwall of the shaft sleeve 5 on the butterfly plate 3 is machined with internal spline 51, is accordingly machined with and interior flower in the valve shaft section 6 of the valve shaft 2
The external splines 21 that key 51 is engaged, it is outer on the internal spline 51 and one end valve shaft section 6 of valve shaft 2 that butterfly plate 3 passes through shaft sleeve 5 thereon
Spline 21 is engaged in the valve shaft section 6 loaded on the one end of valve shaft 2, and the bottom of valve shaft section 6 is equipped with for preventing butterfly by trip bolt 7
Plate 3 is along the axial locating stop piece 8 of play up and down of valve shaft 2.
Claims (1)
1. a kind of butterfly valve, with valve body（1）, valve body（1）It is interior with valve shaft（2）And butterfly plate（3）, valve body（1）On with valve shaft turn
Dynamic drive device（4）, butterfly plate（3）By shaft sleeve thereon（5）Loaded on the valve shaft（2）The valve shaft section of one end（6）On, its
It is characterised by：The butterfly plate（3）On shaft sleeve（5）Inwall be machined with internal spline（51）, the valve shaft（2）Valve shaft section
（6）On be accordingly machined with and internal spline（51）The external splines being engaged（21）, butterfly plate（3）By shaft sleeve thereon（5）It is interior
Spline（51）With valve shaft（2）One end valve shaft section（6）On external splines（21）It is engaged loaded on valve shaft（2）The valve shaft section of one end（6）
On, valve shaft section（6）Bottom pass through trip bolt（7）Equipped with for preventing butterfly plate（3）Along valve shaft（2）Axially play is determined up and down
Position catch（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391731.4U CN206257288U (en) | 2016-12-19 | 2016-12-19 | A kind of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621391731.4U CN206257288U (en) | 2016-12-19 | 2016-12-19 | A kind of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257288U true CN206257288U (en) | 2017-06-16 |
Family
ID=59030013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621391731.4U Expired - Fee Related CN206257288U (en) | 2016-12-19 | 2016-12-19 | A kind of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257288U (en) |
-
2016
- 2016-12-19 CN CN201621391731.4U patent/CN206257288U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20171219 |