CN202755928U - Valve core special for positive displacement motor bypass-valve - Google Patents
Valve core special for positive displacement motor bypass-valve Download PDFInfo
- Publication number
- CN202755928U CN202755928U CN 201220339652 CN201220339652U CN202755928U CN 202755928 U CN202755928 U CN 202755928U CN 201220339652 CN201220339652 CN 201220339652 CN 201220339652 U CN201220339652 U CN 201220339652U CN 202755928 U CN202755928 U CN 202755928U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- positive displacement
- displacement motor
- spool
- 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
Links
Abstract
The utility model provides a valve core special for a positive displacement motor bypass-valve. The valve core special for the positive displacement motor bypass-valve comprises a valve core body 1, a first sealing groove and a second sealing groove, wherein the first sealing groove and the second sealing groove are arranged in the valve core body and respectively matched with a bypass-valve body and a valve sleeve in sealing mode. The valve core special for the positive displacement motor bypass-valve has the advantages of reducing erosive wear on the valve core and the valve sleeve by slurry and prolonging service life of the valve core and the valve sleeve.
Description
Technical field
The utility model relates to the petroleum machinery field, is specifically related to a kind of spool that is applied to the by-pass valve of screwdrill special use.
Background technology
Be applied at present valve core of bypass valve of screw drill, mostly be the spool body and only with bypass valve valve body contact surface single sealing ring arranged, in use because the effect of spool inertia, back-moving spring and mud slurry stream makes spool face and valve sleeving inner wall periodically small amplitude motion occur, cause the damage of spool face and valve sleeving inner wall, increase the erosive wear of mud to the spool valve pocket, reduced the application life of spool valve pocket.
Summary of the invention
For solving the deficiencies in the prior art, the utility model provides a kind of spool that is applied to the by-pass valve of screwdrill special use.
Technical solution adopted in the utility model is: a kind of spool that is applied to the by-pass valve of screwdrill special use, comprise spool main body, the first seal groove, the second seal groove, be provided with the first seal groove and the second seal groove in the spool main body, the first seal groove and the second seal groove are sealed and matched with bypass valve valve body and valve pocket respectively.
The beneficial effects of the utility model are: reduced the erosive wear of mud to the spool valve pocket, improved the application life of spool valve pocket.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model.
Wherein: 1 spool main body, 2 first seal grooves, 3 second seal grooves.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in the figure, a kind of spool that is applied to the by-pass valve of screwdrill special use, comprise spool main body 1, the first seal groove 2, the second seal groove 3, being provided with the first seal groove 2 and the second seal groove 3, the first seal grooves 2 and the second seal groove 3 in spool main body 1 is sealed and matched with bypass valve valve body and valve pocket respectively.
Claims (1)
1. a spool that is applied to the by-pass valve of screwdrill special use is characterized in that being provided with the first seal groove and the second seal groove in the spool main body, and the first seal groove and the second seal groove are sealed and matched with bypass valve valve body and valve pocket respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339652 CN202755928U (en) | 2012-07-13 | 2012-07-13 | Valve core special for positive displacement motor bypass-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339652 CN202755928U (en) | 2012-07-13 | 2012-07-13 | Valve core special for positive displacement motor bypass-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755928U true CN202755928U (en) | 2013-02-27 |
Family
ID=47735115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339652 Expired - Fee Related CN202755928U (en) | 2012-07-13 | 2012-07-13 | Valve core special for positive displacement motor bypass-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202755928U (en) |
-
2012
- 2012-07-13 CN CN 201220339652 patent/CN202755928U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20170713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |