CN202746737U - Connection structure for hand wheel and valve rod - Google Patents
Connection structure for hand wheel and valve rod Download PDFInfo
- Publication number
- CN202746737U CN202746737U CN201220428041.7U CN201220428041U CN202746737U CN 202746737 U CN202746737 U CN 202746737U CN 201220428041 U CN201220428041 U CN 201220428041U CN 202746737 U CN202746737 U CN 202746737U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- screw thread
- handwheel
- hand wheel
- linkage structure
- 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 - Lifetime
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Abstract
The utility model discloses a connection structure for a hand wheel and a valve rod. The connection structure comprises the valve rod, the hand wheel and a locking nut, wherein one end of the valve rod is provided with an upper thread and a lower thread; the upper thread is matched with the locking nut; and the lower thread is in thread fit with the hand wheel. The connection structure for the hand wheel and the valve rod has the advantages of simple structure, tightness in engagement, convenience in connection and attractive appearance.
Description
Technical field
The utility model relates to valve technology field, and is particularly a kind of
Handwheel and valve rod linkage structure
Background technique
At present, oil, chemical industry and water supply line comprise the parts such as valve body, valve gap, valve rod, flashboard, handwheel with gate valve, traditional valve handle and valve rod or Stem Mut Placement have taper square hole, tapped hole, have outer cylinder, keyway, be that T-shaped groove connects, this Placement is so that the generation interlock is not tight easily between handwheel and valve rod or the Stem Mut, loosening problem causes operated by handwheel malfunctioning.
Summary of the invention
The object of the invention is to overcome the defective of prior art, provide a kind of handwheel and the valve rod linkage structure is simple, interlock is tight and handwheel is difficult for loosening valve rod and handwheel linkage structure.
To achieve these goals, the utility model has adopted following technical proposal:
OnePlant handwheel and valve rod linkage structure, it comprises valve rod, handwheel and locking nut, wherein, is provided with upper and lower screw thread on the end of described valve rod, and described upper screw thread cooperates with locking nut, and lower screw thread and handwheel are screw-thread fit.
Wherein, the hand of spiral of described upper and lower screw thread is opposite.
Wherein, described upper screw thread is clockwise screw thread, and lower screw thread is counterclockwise screw thread.
Wherein, the latus rectum of described upper screw thread is less than lower screw thread, and described lower screw thread latus rectum is less than the valve rod latus rectum.
Compare with existing inside screw non-rising stem type gate valve, the utility model adopts valve rod and handwheel screw-thread fit, again through locking nut locking, so that be difficult for loosening between valve rod and the handwheel, especially adopt the screw thread of two different direction so that being connected between valve rod and the handwheel is more fastening, and the simple advantage of handwheel fitting operation.
Below with reference to drawings and Examples, the utility model is described in detail.
Description of drawings
Fig. 1 is the utility model valve rod and handwheel linkage structure schematic representation.
Embodiment
See also Fig. 1, a kind of handwheel and valve rod linkage structure comprise handwheel 1, valve rod 2, locking nut 3; Valve rod 2 is provided with two screw threads with handwheel 1 connecting end and is respectively screw thread 21 and lower screw thread 22, and wherein going up screw thread 21 is clockwise screw thread, and lower screw thread 22 is counterclockwise screw thread, and upper screw thread 21 latus rectums are less than lower screw thread 22; Lower screw thread 22 latus rectums are less than valve rod 2 latus rectums; Lower screw thread 22 screws with handwheel 1 tapped hole; Upper screw thread 21 screws with locking nut 3; When handwheel 1 clockwise rotates, the screw thread that upper screw thread 21 pins in the handwheel 1, band ovable valve stem 2 rotates counterclockwise the unlatching flashboard; When handwheel 1 rotated counterclockwise, locking nut 3 pinned the screw thread of handwheel 1, and band ovable valve stem 2 clockwise rotates closes flashboard, thereby reaches the purpose of opening/shutting valve.
This valve is compared with traditional linkage structure with the handwheel linkage structure, the utlity model has handwheel and the valve rod interlock is tight, and the simple advantage of handwheel fitting operation is fit to various oil transportations, chemical pipeline inside screw non-rising stem type gate valve.
Claims (4)
1.
OnePlant handwheel and valve rod linkage structure, it comprises valve rod, handwheel and locking nut, it is characterized in that: be provided with upper and lower screw thread on the end of described valve rod, described upper screw thread cooperates with locking nut, and lower screw thread and handwheel are screw-thread fit.
2. a kind of handwheel according to claim 1 and valve rod linkage structure, it is characterized in that: the hand of spiral of described upper and lower screw thread is opposite.
3. a kind of handwheel according to claim 2 and valve rod linkage structure, it is characterized in that: described upper screw thread is clockwise screw thread, lower screw thread is counterclockwise screw thread.
4. according to the described a kind of handwheel of right 1-3 and valve rod linkage structure, it is characterized in that: the latus rectum of described upper screw thread is less than lower screw thread, and described lower screw thread latus rectum is less than the valve rod latus rectum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220428041.7U CN202746737U (en) | 2012-08-28 | 2012-08-28 | Connection structure for hand wheel and valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220428041.7U CN202746737U (en) | 2012-08-28 | 2012-08-28 | Connection structure for hand wheel and valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746737U true CN202746737U (en) | 2013-02-20 |
Family
ID=47706136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220428041.7U Expired - Lifetime CN202746737U (en) | 2012-08-28 | 2012-08-28 | Connection structure for hand wheel and valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385087A (en) * | 2014-10-14 | 2015-03-04 | 内蒙古第一机械集团有限公司 | Inner raceway circular arc groove grinding device for holes |
-
2012
- 2012-08-28 CN CN201220428041.7U patent/CN202746737U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104385087A (en) * | 2014-10-14 | 2015-03-04 | 内蒙古第一机械集团有限公司 | Inner raceway circular arc groove grinding device for holes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
|
| CX01 | Expiry of patent term |