CN201206717Y - Lubricating oil pump - Google Patents
Lubricating oil pump Download PDFInfo
- Publication number
- CN201206717Y CN201206717Y CNU2008200353785U CN200820035378U CN201206717Y CN 201206717 Y CN201206717 Y CN 201206717Y CN U2008200353785 U CNU2008200353785 U CN U2008200353785U CN 200820035378 U CN200820035378 U CN 200820035378U CN 201206717 Y CN201206717 Y CN 201206717Y
- Authority
- CN
- China
- Prior art keywords
- pump
- oil
- rotor
- pump cover
- pump housing
- 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
- 239000010687 lubricating oil Substances 0.000 title 1
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000007306 turnover Effects 0.000 claims description 7
- 239000003921 oil Substances 0.000 description 30
- 239000010710 diesel engine oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
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- Rotary Pumps (AREA)
Abstract
The utility model provides an oil pump with compact structure and good sealing performance. The oil pump comprises a pump body, a pump cover, a rotor shaft, an internal rotor, and an external rotor. A rotor cavity for holding the internal rotor and the external rotor is formed on the pump body, the internal rotor is connected on the rotor shaft, oil inlet/outlet cavities which are formed on the surface of the pump cover opposite to the rotor cavity communicate with oil inlet/outlet holes formed on the surface of the pump cover through oil passages inside the pump cover respectively.
Description
Technical field
The utility model relates to oil pump, especially the oil pump used of single cylinder diesel.
Background technique
Oil pump, comprise the pump housing, pump cover, rotor shaft, inner and outer rotors, on the pump housing, have the rotor chamber that inner and outer rotors is set, internal rotor is connected on the rotor shaft, opens turnover oil pocket on the pump cover surface relative with rotor chamber respectively by communicating with the turnover oilhole on pump housing surface at the oil circuit that passes pump cover, the pump housing.Because oil circuit passes pump cover, the pump housing, occurs seepage on the junction plane of the pump housing and pump cover easily.And oil outlet is arranged on the pump housing, and product structure is more messy, and profile is not attractive in appearance.The rotor shaft of existing oil pump generally adopts single support structure, makes that the oil pump vibration is bigger.
Summary of the invention
The purpose of this utility model provides a kind of compact structure, sealability oil pump preferably.
This oil pump, comprise the pump housing, pump cover, rotor shaft, inner and outer rotors, on the pump housing, have the rotor chamber that inner and outer rotors is set, internal rotor is connected on the rotor shaft, and the turnover oil pocket of opening on the pump cover surface relative with rotor chamber communicates with the turnover oilhole on pump cover surface by the oil circuit in pump cover respectively.
Because described oil circuit in pump cover, belongs to logical dark formula oil circuit, leakage problems can not occur.To pass in and out oil pocket, oil circuit, turnover oilhole and all design on pump cover, not relate to extra oilhole on the pump housing, product with compact structure, associative perception is strong, and configuration design is elegant in appearance.
As further improvement, the main bearing hole that described rotor shaft passes on the pump cover extend into the auxilliary bearing hole that has on the pump housing.Rotor shaft adopts double supporting structure, makes that the oil pump vibration is little.
As further improvement, the opposing side of the pump housing and pump cover is tightly connected, and has the O type seal groove that the O RunddichtringO is set at the sealing surface of the pump housing or pump cover.The O RunddichtringO has guaranteed the sealing of the pump housing and pump cover more reliably.
Description of drawings
Fig. 1 is the sectional view of oil pump integral body;
Fig. 2 is the partial sectional view of oil pump installing and locating pin and set screw;
Fig. 3 is Fig. 1 worm's eye view.
Embodiment
Referring to diesel engine oil pump shown in Fig. 1-3, on the pump housing 1, have the rotor chamber that inner and outer rotors is set, internal rotor 4 is connected on the rotor shaft 3, and the oil suction chamber of opening on the pump cover surface relative with rotor chamber 6 communicates with the oil inlet hole 9 on pump cover surface by the logical dark formula oil circuit 11 in pump cover; The oil pocket of opening on the pump cover surface relative with rotor chamber 7 that goes out communicates with the oil outlet 8 on pump cover surface by the logical dark formula oil circuit 10 in pump cover.The main bearing hole 19 that rotor shaft passes on the pump cover extend into the auxilliary bearing hole 20 that has on the pump housing.Pump cover 2 is provided with mechanical annular seal groove 18 with the pump housing 1 junction plane is middle, is used to install O RunddichtringO 12.Pump cover is provided with positioning pin hole 13, and cooperation drills and reams with the pump housing after assembling, and installing and locating pin 14 guarantees the Location accuracy of oil pump pump housing pump cover and the flexibility of rotation.The screw 16 that pump cover is provided with on the counterbore 15 and the pump housing is used, and uses the screw 17 fixedly pump cover 2 and the pump housing 1, guarantees engine oil pump assembly component integrity.
The utility model oil pump ne-leakage, working pressure is stable, long service life, noise is low, and oil absorbency is good, and it is short to start the fuel-displaced time, in light weight, energy-conserving and environment-protective, beautiful shape.
Claims (3)
1. oil pump, comprise the pump housing, pump cover, rotor shaft, inner and outer rotors, on the pump housing, have the rotor chamber that inner and outer rotors is set, internal rotor is connected on the rotor shaft, it is characterized in that: the turnover oil pocket of opening on the pump cover surface relative with rotor chamber communicates with the turnover oilhole on pump cover surface by the oil circuit in pump cover respectively.
2. oil pump according to claim 1 is characterized in that: the main bearing hole that rotor shaft passes on the pump cover extend into the auxilliary bearing hole that has on the pump housing.
3. oil pump according to claim 1 is characterized in that: the opposing side of the pump housing and pump cover is tightly connected, and has the O type seal groove that the O RunddichtringO is set at the sealing surface of the pump housing or pump cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200353785U CN201206717Y (en) | 2008-04-30 | 2008-04-30 | Lubricating oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200353785U CN201206717Y (en) | 2008-04-30 | 2008-04-30 | Lubricating oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206717Y true CN201206717Y (en) | 2009-03-11 |
Family
ID=40465780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200353785U Expired - Fee Related CN201206717Y (en) | 2008-04-30 | 2008-04-30 | Lubricating oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206717Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373345A (en) * | 2014-10-15 | 2015-02-25 | 哈尔滨东安发动机（集团）有限公司 | Lubricating oil pump for optimizing axial clearance |
| WO2025102242A1 (en) * | 2023-11-14 | 2025-05-22 | 全兴精工集团有限公司 | Plunger pump and processing method therefor |
-
2008
- 2008-04-30 CN CNU2008200353785U patent/CN201206717Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373345A (en) * | 2014-10-15 | 2015-02-25 | 哈尔滨东安发动机（集团）有限公司 | Lubricating oil pump for optimizing axial clearance |
| WO2025102242A1 (en) * | 2023-11-14 | 2025-05-22 | 全兴精工集团有限公司 | Plunger pump and processing method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20120430 |