CN2511810Y - 抽油泵增效阀 - Google Patents
抽油泵增效阀 Download PDFInfo
- Publication number
- CN2511810Y CN2511810Y CN 02209915 CN02209915U CN2511810Y CN 2511810 Y CN2511810 Y CN 2511810Y CN 02209915 CN02209915 CN 02209915 CN 02209915 U CN02209915 U CN 02209915U CN 2511810 Y CN2511810 Y CN 2511810Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- oil pump
- valve body
- described oil
- 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
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02209915 CN2511810Y (zh) | 2002-01-23 | 2002-01-23 | 抽油泵增效阀 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02209915 CN2511810Y (zh) | 2002-01-23 | 2002-01-23 | 抽油泵增效阀 |
Publications (1)
Publication Number | Publication Date |
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CN2511810Y true CN2511810Y (zh) | 2002-09-18 |
Family
ID=33690226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN 02209915 Expired - Fee Related CN2511810Y (zh) | 2002-01-23 | 2002-01-23 | 抽油泵增效阀 |
Country Status (1)
Country | Link |
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CN (1) | CN2511810Y (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102852786A (zh) * | 2012-09-29 | 2013-01-02 | 凯盛重工有限公司 | 一种乳化液泵的吸液阀 |
CN109138929A (zh) * | 2018-10-15 | 2019-01-04 | 殷昕 | 一种地下抽油机 |
-
2002
- 2002-01-23 CN CN 02209915 patent/CN2511810Y/zh not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102852786A (zh) * | 2012-09-29 | 2013-01-02 | 凯盛重工有限公司 | 一种乳化液泵的吸液阀 |
CN102852786B (zh) * | 2012-09-29 | 2016-01-20 | 凯盛重工有限公司 | 一种乳化液泵的吸液阀 |
CN109138929A (zh) * | 2018-10-15 | 2019-01-04 | 殷昕 | 一种地下抽油机 |
CN109138929B (zh) * | 2018-10-15 | 2021-05-04 | 殷昕 | 一种地下抽油机 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
IP01 | Partial invalidation of patent right |
Case number: W54986 Conclusion of examination: Maintain patent right effective on the basis of claims that patentee submitted on May 13rd, 2003 . The claims are as follows:" 1. Oil pump boosting valve, it includes valve body(2)Be arranged on valve body(2)Interior valve element(1), in valve body(2)Upper and lower end has oil-out(2-1)And oil inlet(2-2), in oil inlet(2-2)Top be provided with valve seat(3), valve element(1)The periphery of lower end and valve seat(3)Form in sealing contact, valve element(1)Lower surface be the hemisphere face for caving inward(1-1), it is characterised in that in valve element(1)The centre of upper end is connected with a valve rod(6), valve rod(6)With valve body(2)The pilot hole of upper middle position(2-4)Formation is slidably matched . 2. Oil pump boosting valve according to claim 1, it is characterised in that valve seat(3)It is suitable for reading be conical opening (3-1), valve element(1)The periphery of lower end has and conical opening(3-1)The conical surface for matching(1-2) . 3. Oil pum... Decision date: 20030909 Denomination of utility model: Expansion valve for oil well pump Granted publication date: 20020918 Int.cl.7: F04B47/02 E21B43/00 Patentee: Cao Guanjun Review decision number: 5356 |
|
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |