CN105240675A - Light large-flow oil pump - Google Patents
Light large-flow oil pump Download PDFInfo
- Publication number
- CN105240675A CN105240675A CN201510738003.XA CN201510738003A CN105240675A CN 105240675 A CN105240675 A CN 105240675A CN 201510738003 A CN201510738003 A CN 201510738003A CN 105240675 A CN105240675 A CN 105240675A
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- China
- Prior art keywords
- pump
- rotor
- oil
- pressure
- limiting valve
- 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.)
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention provides a light large-flow oil pump which comprises a pump body, a pump cover, an inner rotor, an outer rotor, a pressure-limiting valve, a drive shaft and a transmission gear, wherein the inner rotor and the outer rotor are positioned in a rotor cavity of the pump body; end surfaces of the inner rotor and the outer rotor are provided with weight-reducing holes; one end of the drive shaft is mounted on the transmission gear; the other end of the drive shaft penetrates through a shaft hole of the pump body for being mounted on the inner rotor; the pressure-limiting valve is an inner relief type pressure-limiting valve; the pump body and the pump cover are aluminum die-casting fittings; and the pump cover is mounted on the pump body through a bolt. According to the technical scheme, the inner and outer rotor type structures and the inner relief type pressure-limiting valve are adopted, so that the structure of the whole oil pump is relatively compact; the pump body and the pump cover are aluminum die-casting fittings, and the end surfaces of the inner rotor and the outer rotor are provided with weight-reducing holes, so that weight is reduced; and oil in the inner relief type pressure-limiting valve can be returned into an oil inlet of the oil pump to supplement oil inlet amount, so that flow fluctuation of the oil outlet is reduced.
Description
Technical field
The present invention relates to a kind of oil pump, especially a kind of large discharge oil pump on diesel generator.
Background technique
To the minimum discharge of oil pump, diesel engine requires that common high-capacity pump adopts gear structure, comprises the ironcasting pump housing, pump cover, gear, leak pressure-limit valve for 180L/min.Although this structure can meet the performance requirement of motor, simplicity of design, there is drawbacks such as " structure are not compact, Heavy Weight, and energy consumption is large, and it is large that forward and backward flowed fluctuation opened by pressure-limit valve ".For meeting oil flow rate, must by gear diameter and enlarged in thickness, the volume of the whole pump housing is caused to become large, if and do not strengthen gear diameter or thickness, in order to obtain comparatively large discharge ability, just can only improve the rotating speed of oil pump, but this situation can reduce the working life of oil pump, the annex power consumption of oil pump is strengthened or affects the fuel economy of motor, the noise of motor also can increase simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of large discharge oil pump of lightweight, compact structure.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of light-duty large discharge oil pump, and it comprises the pump housing, pump cover, internal rotor, external rotor, pressure-limit valve, driving shaft, driving gear; Described internal rotor and external rotor are positioned at the rotor chamber of the pump housing, the end face of described internal rotor and external rotor is equipped with and falls repeated hole, one end of described driving shaft is arranged on driving gear, the other end of described driving shaft is arranged on internal rotor through the axis hole of the pump housing, described pressure-limit valve is internal drainage type pressure-limit valve, the described pump housing and pump cover are aluminium diecasting, and pump cover is arranged on the pump housing by screw.
Preferably, described internal rotor and external rotor are made by powder metallurgy.
In technique scheme, owing to have employed inner and outer Rotator formula structure and internal drainage type pressure-limit valve, make whole machine oil pump structure compacter; The pump housing and pump cover adopt aluminium diecasting, and the end face of internal rotor and external rotor is equipped with and falls repeated hole, this reduces weight; Oil in internal drainage type pressure-limit valve can come back to the filler opening of oil pump, supplements oil inlet quantity, thus reduces the flowed fluctuation of oil outlet.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that A-A in Fig. 1 is to structural representation.
Embodiment
The light-duty large discharge oil pump of one as shown in Figure 1, 2, it comprises the pump housing 1, pump cover 2, internal rotor 3, external rotor 4, pressure-limit valve 5, driving shaft 6, driving gear 7; Described internal rotor 3 and external rotor 4 are positioned at the rotor chamber of the pump housing 1, described internal rotor 3 and external rotor 4 are made by powder metallurgy, the end face of described internal rotor 3 and external rotor 4 is equipped with and falls repeated hole, one end of described driving shaft 6 is arranged on driving gear 7, the other end of described driving shaft 6 is arranged on internal rotor 3 through the axis hole of the pump housing 1, described pressure-limit valve 5 is internal drainage type pressure-limit valve, the described pump housing 1 and pump cover 2 are aluminium diecasting, and pump cover 2 is arranged on the pump housing 1 by screw.
Claims (2)
1. a light-duty large discharge oil pump, is characterized in that: it comprises the pump housing, pump cover, internal rotor, external rotor, pressure-limit valve, driving shaft, driving gear; Described internal rotor and external rotor are positioned at the rotor chamber of the pump housing, the end face of described internal rotor and external rotor is equipped with and falls repeated hole, one end of described driving shaft is arranged on driving gear, the other end of described driving shaft is arranged on internal rotor through the axis hole of the pump housing, described pressure-limit valve is internal drainage type pressure-limit valve, the described pump housing and pump cover are aluminium diecasting, and pump cover is arranged on the pump housing by screw.
2. light-duty large discharge oil pump according to claim 1, is characterized in that: described internal rotor and external rotor are made by powder metallurgy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738003.XA CN105240675A (en) | 2015-11-04 | 2015-11-04 | Light large-flow oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738003.XA CN105240675A (en) | 2015-11-04 | 2015-11-04 | Light large-flow oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240675A true CN105240675A (en) | 2016-01-13 |
Family
ID=55038441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510738003.XA Pending CN105240675A (en) | 2015-11-04 | 2015-11-04 | Light large-flow oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327688A (en) * | 2017-08-17 | 2017-11-07 | 湖南机油泵股份有限公司 | A kind of dual-rotor structure lubricating oil pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617080A1 (en) * | 2004-07-15 | 2006-01-18 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Oil pump |
| GB2445243A (en) * | 2006-12-22 | 2008-07-02 | Concentric Pumps Ltd | Rotary piston actuated indexing gerotor pump |
| CN202125717U (en) * | 2011-06-21 | 2012-01-25 | 湖南机油泵股份有限公司 | NSE type rotor oil pump |
| CN202203645U (en) * | 2011-07-22 | 2012-04-25 | 湖南机油泵股份有限公司 | Gear driving rotor oil pump |
| CN103697312A (en) * | 2013-12-08 | 2014-04-02 | 湖南机油泵股份有限公司 | Rotor part of high-speed stable oil pump |
| CN204153438U (en) * | 2014-08-12 | 2015-02-11 | 广西玉柴机器股份有限公司 | The oil pump assembly of motor |
| CN205155525U (en) * | 2015-11-04 | 2016-04-13 | 湖南机油泵股份有限公司 | Light -duty large -traffic oil pump |
-
2015
- 2015-11-04 CN CN201510738003.XA patent/CN105240675A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617080A1 (en) * | 2004-07-15 | 2006-01-18 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Oil pump |
| GB2445243A (en) * | 2006-12-22 | 2008-07-02 | Concentric Pumps Ltd | Rotary piston actuated indexing gerotor pump |
| CN202125717U (en) * | 2011-06-21 | 2012-01-25 | 湖南机油泵股份有限公司 | NSE type rotor oil pump |
| CN202203645U (en) * | 2011-07-22 | 2012-04-25 | 湖南机油泵股份有限公司 | Gear driving rotor oil pump |
| CN103697312A (en) * | 2013-12-08 | 2014-04-02 | 湖南机油泵股份有限公司 | Rotor part of high-speed stable oil pump |
| CN204153438U (en) * | 2014-08-12 | 2015-02-11 | 广西玉柴机器股份有限公司 | The oil pump assembly of motor |
| CN205155525U (en) * | 2015-11-04 | 2016-04-13 | 湖南机油泵股份有限公司 | Light -duty large -traffic oil pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327688A (en) * | 2017-08-17 | 2017-11-07 | 湖南机油泵股份有限公司 | A kind of dual-rotor structure lubricating oil pump |
| CN107327688B (en) * | 2017-08-17 | 2022-12-06 | 湖南机油泵股份有限公司 | Oil pump with double-rotor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |