CN206017769U - Butterfly valve valve rod spindle nose rotational structure - Google Patents
Butterfly valve valve rod spindle nose rotational structure Download PDFInfo
- Publication number
- CN206017769U CN206017769U CN201621012086.0U CN201621012086U CN206017769U CN 206017769 U CN206017769 U CN 206017769U CN 201621012086 U CN201621012086 U CN 201621012086U CN 206017769 U CN206017769 U CN 206017769U
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- valve
- gland
- spindle nose
- valve rod
- valve shaft
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Abstract
This utility model is related to a kind of butterfly valve valve rod spindle nose rotational structure, including valve body, valve plate, valve shaft, gland and support and valve shaft actuator, vertically through installation valve shaft in valve body, valve shaft in valve body is radially fixedly mounted with valve plate, gland is installed in the sealing of valve body upper end, valve shaft is installed and executes structure in gland upper end, semicircle annular groove is coaxially formed with valve rod lower surface, also semicircle annular groove is formed with the corresponding spindle nose gland upper surface in valve rod lower surface, two semicircle annular grooves are coaxially corresponding, embed in two halves circular ring slot and fill at least three concentric stroking pearls.Endless glide is formed between the valve stem end and rotary head gland of the butterfly valve valve rod spindle nose rotational structure that the application is provided, the sliding pearl (pressure steel ball) of setting-in in slide rail, when valve rod is rotated, valve rod carries out pivoting friction with sliding pearl, the hard friction between valve stem end and capping is avoided, makes rotation more smooth quick.
Description
Technical field
This utility model belongs to valve field, especially a kind of butterfly valve valve rod spindle nose rotational structure.
Background technology
Butterfly valve is called flap valve, is a kind of regulating valve of simple structure, can be used for the on-off control of low pressure pipeline medium
Butterfly valve refers to closure member (flap or butterfly plate) for disk, reaches a kind of valve of open and close around valve shaft rotation, and valve can
For controlling all kinds such as empty gas and water, steam, various Korrosionsmediums, mud, oil product, liquid metal and radiating medium
The flowing of fluid.Cut-out and throttling action is acted primarily as on pipeline.Butterfly valve opening and closing element is a discoidal butterfly plate, in valve body
Rotate around the axis of its own, so as to reach the purpose for opening and closing or adjusting.
The end of the valve rod of existing butterfly valve is all the rotary head gland of directly contact valve body lower end, when valve rod is rotated, valve
Boom end is rotated for hard with capping, and rotating effect is very bad.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of low cost, good seal performance, rotation
Efficiently butterfly valve valve rod spindle nose rotational structure.
This utility model realizes that the technical scheme of purpose is as follows：
A kind of butterfly valve valve rod spindle nose rotational structure, executes machine including valve body, valve plate, valve shaft, gland and support and valve shaft
Structure, vertically through valve shaft is installed in valve body, the valve shaft in valve body is radially fixedly mounted with valve plate, and gland, gland are installed in the sealing of valve body upper end
Upper end is installed valve shaft and executes structure, and through gland and support, end is nibbled with the drive gear in valve shaft actuator on valve shaft top
Close, by valve shaft actuator come the rotation of drive valve plate, lower end axis hole of the valve rod lower end through valve body, the axis hole of valve body lower end
End is sealed by spindle nose gland, is coaxially formed with semicircle annular groove on valve rod lower surface, in the corresponding spindle nose in valve rod lower surface
Gland upper surface is also formed with semicircle annular groove, and two semicircle annular grooves are coaxially corresponding, embed in two halves circular ring slot and are filled to few three
Individual concentric stroking pearl.
And, the valve shaft actuator is pneumatic actuator or hand actuator.
The beneficial effects of the utility model are：
Endless glide is formed between the valve stem end and rotary head gland of the butterfly valve valve rod spindle nose rotational structure that the application is provided,
The sliding pearl (pressure steel ball) of setting-in in slide rail, when valve rod is rotated, valve rod carries out pivoting friction with sliding pearl, it is to avoid valve stem end and
Hard friction between capping, makes rotation more smooth quick.
Description of the drawings
Structural representations of the Fig. 1 for the application；
Close-up schematic views of the Fig. 2 for the A of Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and by specific embodiment, and following examples are simply retouched
The property stated, be not determinate, it is impossible to limit protection domain of the present utility model successively.
A kind of butterfly valve valve rod spindle nose rotational structure, holds including valve body 6, valve plate 4, valve shaft 5, gland 7 and support 8 and valve shaft
Row mechanism, vertically through valve shaft is installed in valve body, the valve shaft in valve body is radially fixedly mounted with valve plate, and gland is installed in the sealing of valve body upper end,
Gland upper end is installed valve shaft and executes structure, and valve shaft top is through gland and support, the sliding tooth in end and valve shaft actuator
Wheel engagement, by valve shaft actuator come the rotation of drive valve plate.
Lower end axis hole of the valve rod lower end through valve body, the axis hole end of valve body lower end is sealed by spindle nose gland 1.
The innovation of the application is：
Semicircle annular groove 3 is coaxially formed with valve rod lower surface, in the corresponding spindle nose gland upper surface in valve rod lower surface
Semicircle annular groove is formed with, two semicircle annular grooves are coaxially corresponding, embed in two halves circular ring slot and fill at least three concentric stroking pearls 2,
For when valve rod is rotated, reducing the friction of valve rod lower surface and gland upper surface.
Wherein valve shaft actuator is opened the mechanism of valve plate, has pneumatic holding in prior art for driving valve shaft to rotate coaxially
Row mechanism and manual actuator, i.e. pneumatic actuator and hand actuator etc. are multiple, and the application does not do particular restriction.
Valve rod rotate more 0-90 °, so at least three pearls can just provide 90 ° deliver.
Endless glide is formed between the valve stem end and rotary head gland of the butterfly valve valve rod spindle nose rotational structure that the application is provided,
The sliding pearl (pressure steel ball) of setting-in in slide rail, when valve rod is rotated, valve rod carries out pivoting friction with sliding pearl, it is to avoid valve stem end and
Hard friction between capping, makes rotation more smooth quick.
Claims (2)
1. a kind of butterfly valve valve rod spindle nose rotational structure, including valve body, valve plate, valve shaft, gland and support and valve shaft actuator,
Vertically through valve shaft is installed in valve body, the valve shaft in valve body is radially fixedly mounted with valve plate, and gland, gland upper end are installed in the sealing of valve body upper end
Valve shaft is installed and executes structure, valve shaft top is engaged with the drive gear in valve shaft actuator through gland and support, end, leads to
Cross the rotation that valve shaft actuator carrys out drive valve plate, lower end axis hole of the valve rod lower end through valve body, the axis hole end of valve body lower end
Sealed by spindle nose gland, it is characterised in that：Semicircle annular groove is coaxially formed with valve rod lower surface, corresponding in valve rod lower surface
Spindle nose gland upper surface be also formed with semicircle annular groove, two semicircle annular grooves are coaxially corresponding, are embedded in two halves circular ring slot
At least three concentric stroking pearls.
2. butterfly valve valve rod spindle nose rotational structure according to claim 1, it is characterised in that：The valve shaft actuator is pneumatic
Executor or hand actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621012086.0U CN206017769U (en) | 2016-08-31 | 2016-08-31 | Butterfly valve valve rod spindle nose rotational structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621012086.0U CN206017769U (en) | 2016-08-31 | 2016-08-31 | Butterfly valve valve rod spindle nose rotational structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017769U true CN206017769U (en) | 2017-03-15 |
Family
ID=58255098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621012086.0U Active CN206017769U (en) | 2016-08-31 | 2016-08-31 | Butterfly valve valve rod spindle nose rotational structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017769U (en) |
-
2016
- 2016-08-31 CN CN201621012086.0U patent/CN206017769U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |