CN201892016U - Balance oil discharge valve rotor type oil pump - Google Patents
Balance oil discharge valve rotor type oil pump Download PDFInfo
- Publication number
- CN201892016U CN201892016U CN2010206176156U CN201020617615U CN201892016U CN 201892016 U CN201892016 U CN 201892016U CN 2010206176156 U CN2010206176156 U CN 2010206176156U CN 201020617615 U CN201020617615 U CN 201020617615U CN 201892016 U CN201892016 U CN 201892016U
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- Prior art keywords
- valve
- rotor
- pressure
- pump
- opening
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- 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
A balance oil discharge valve rotor type oil pump comprises a pump body, a pump cover, an outer rotor, an inner rotor, a plunger valve, a spring and a screw plug; the pump body and the pump cover are connected together through a bolt; and the inner rotor and the outer rotor are mounted in a rotor hole of the pump body. On one side of the rotor hole of the pump body, a valve hole of a pressure-limiting valve is formed and provided with an oil discharge gap at the middle part, the valve hole of the pressure-limiting valve is communicated with an oil outlet cavity, and the plunger valve, the spring and the screw plug are sequentially mounted in the valve hole of the pressure-limiting valve. An opening annular oil discharge groove is arranged at a part in the valve hole of the pressure-limiting valve, which corresponds to the oil discharge gap; and the opening of the annular oil discharge groove is communicated with the oil discharge gap.
Description
Technical field
The utility model relates to a kind of rotor-type oil pump, particularly a kind of balance oil drain valve rotor-type oil pump.
Background technique
Existing rotor-type oil pump structure as shown in Figure 1, it is made up of the pump housing 1, pump cover 2, external rotor 3, internal rotor 4, plunger valve 5, spring 6 and plug screw 7, the pump housing 1 and pump cover 2 link together by bolt, and internal rotor 4 and external rotor 3 are installed in the rotor hole of the pump housing 1.In the pump housing 1 rotor hole one side, be provided with the pressure-limit valve valve opening 1-1 of middle part band emptying breach 1-2, pressure-limit valve valve opening 1-1 by emptying breach 1-2 with go out oil pocket and be communicated with, plunger valve 5, spring 6 and plug screw 7 are installed in pressure-limit valve valve opening 1-1 successively.The deficiency of existing rotor-type oil pump is: because the set emptying breach 1-2 in pressure-limit valve valve opening 1-1 middle part is a semicircular opening, and the one, processing difficulties, the 2nd, the machining accuracy of valve opening be cannot say for sure to demonstrate,prove; In addition, after plunger valve 5 is opened, have only the semicircular opening emptying, cause periphery to be subjected to force unbalance and produce uneven wear, make the valve closing imprecision and lost efficacy, influence reliability, Security and the working life of oil pump pressure-limit valve work.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and a kind of balance oil drain valve rotor-type oil pump is provided, solve the quality problems that the plunger valve uneven wear is not closed completely by the balance emptying, improve stability, reliability and the working life of pressure-limit valve work.
The technical solution of the utility model is: a kind of balance oil drain valve rotor-type oil pump, it is made up of the pump housing, pump cover, external rotor, internal rotor, plunger valve, spring and plug screw, the pump housing and pump cover link together by bolt, and internal rotor and external rotor are installed in the rotor hole of the pump housing.In pump housing rotor hole one side, be provided with the pressure-limit valve valve opening of middle part band emptying breach, the pressure-limit valve valve opening by the emptying breach with go out oil pocket and be communicated with, plunger valve, spring and plug screw are installed in the pressure-limit valve valve opening successively.The annular that is provided with an opening with the corresponding position of emptying breach in the pressure-limit valve valve opening is unloaded oil groove, and the opening that annular is unloaded oil groove communicates with the emptying breach.
The utility model compared with prior art has following characteristics:
1, unloads oil groove because the corresponding position of emptying breach at pressure-limit valve valve opening middle part is provided with the annular of an opening, solved the fine finishing of pressure-limit valve valve opening, improved the machining accuracy of valve opening because of the monolateral mistake circle that causes.
2, during the plunger valve emptying, the plunger valve periphery can balanced oil extraction, has reduced the resistance of lubricant oil by the one side oil extraction of pump wall, stability, reliability, Security and the working life of having improved valve working.
Below in conjunction with the drawings and specific embodiments detailed structure of the present utility model is further described.
Description of drawings
Accompanying drawing 1 is existing rotor-type oil pump structural representation;
Accompanying drawing 2 is a structural representation of the present utility model.
Embodiment
As shown in Figure 2: a kind of balance oil drain valve rotor-type oil pump, it is made up of the pump housing 1, pump cover 2, external rotor 3, internal rotor 4, plunger valve 5, spring 6 and plug screw 7, the pump housing 1 and pump cover 2 link together by bolt, and internal rotor 4 and external rotor 3 are installed in the rotor hole of the pump housing 1.In the pump housing 1 rotor hole one side, be provided with the pressure-limit valve valve opening 1-1 of middle part band emptying breach 1-2, pressure-limit valve valve opening 1-1 by emptying breach 1-2 with go out oil pocket and be communicated with, plunger valve 5, spring 6 and plug screw 7 are installed in pressure-limit valve valve opening 1-1 successively.The annular that is provided with an opening with the corresponding position of emptying breach 1-2 in pressure-limit valve valve opening 1-1 is unloaded oil groove 1-3, and the opening that annular is unloaded oil groove 1-3 communicates with emptying breach 1-2.
Claims (1)
1. balance oil drain valve rotor-type oil pump, it is by the pump housing, pump cover, external rotor, internal rotor, plunger valve, spring and plug screw are formed, the pump housing and pump cover link together by bolt, internal rotor and external rotor are installed in the rotor hole of the pump housing, in pump housing rotor hole one side, be provided with the pressure-limit valve valve opening of middle part band emptying breach, the pressure-limit valve valve opening by the emptying breach with go out oil pocket and be communicated with, plunger valve is installed in the pressure-limit valve valve opening successively, spring and plug screw, it is characterized in that: the annular that is provided with an opening with the corresponding position of emptying breach in the pressure-limit valve valve opening is unloaded oil groove, and the opening that annular is unloaded oil groove communicates with the emptying breach.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206176156U CN201892016U (en) | 2010-11-13 | 2010-11-13 | Balance oil discharge valve rotor type oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206176156U CN201892016U (en) | 2010-11-13 | 2010-11-13 | Balance oil discharge valve rotor type oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201892016U true CN201892016U (en) | 2011-07-06 |
Family
ID=44221492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206176156U Expired - Lifetime CN201892016U (en) | 2010-11-13 | 2010-11-13 | Balance oil discharge valve rotor type oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201892016U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016936A (en) * | 2011-09-28 | 2013-04-03 | 上海乾通汽车附件有限公司 | Pressure-limiting valve spring for oil pump assemblies of gasoline engines |
| CN110185911A (en) * | 2019-07-05 | 2019-08-30 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve preventing plunger eccentric wear |
| CN110219799A (en) * | 2019-07-05 | 2019-09-10 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve improving plunger wear |
-
2010
- 2010-11-13 CN CN2010206176156U patent/CN201892016U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016936A (en) * | 2011-09-28 | 2013-04-03 | 上海乾通汽车附件有限公司 | Pressure-limiting valve spring for oil pump assemblies of gasoline engines |
| CN110185911A (en) * | 2019-07-05 | 2019-08-30 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve preventing plunger eccentric wear |
| CN110219799A (en) * | 2019-07-05 | 2019-09-10 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve improving plunger wear |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |