CN2396210Y - Cover postpositive machine oil pump - Google Patents
Cover postpositive machine oil pump Download PDFInfo
- Publication number
- CN2396210Y CN2396210Y CN 99230169 CN99230169U CN2396210Y CN 2396210 Y CN2396210 Y CN 2396210Y CN 99230169 CN99230169 CN 99230169 CN 99230169 U CN99230169 U CN 99230169U CN 2396210 Y CN2396210 Y CN 2396210Y
- Authority
- CN
- China
- Prior art keywords
- pump
- oil
- pump housing
- rotor
- capping
- 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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- Rotary Pumps (AREA)
Abstract
The utility model relates to a lubricating oil pump, comprising a pump body and a close over which is arranged on one side of the oil pump gear and fixed to the pump body. The lubricating oil pump is characterized in that the rotor cavity of the pump body is provided with a rotor pair, the pump body is provided with an in-out oil groove and a pressure control valve connected with the pump body, and the close over and the rotor cavity of the pump body form a sealing state. One end of the pump shaft is fixed with the oil pump gear, and the other end of the pump shaft passes through the close over and the pump shaft hole of the pump body and then is fixed with the inner rotor, and the assembly is fixed with a diesel engine by the screw bolt. The advantages of the utility model are that the influence for the rotor pair caused by the assembly which is stressed to deform can be avoided, the leakage phenomenon of machine oil is overcome, the operating flexibility and reliability of the complete machine is enhanced and the cost is reduced. The cover postpositive machine oil pump can be widely used for lubrication and oil feeding of the diesel engine.
Description
The utility model relates to a kind of oil pump, refers to the oil pump of diesel engine especially.
Oil pump is used widely on diesel engine at present as the critical component of lubricating system of diesel oil engine.But the oil pump of existing diesel mostly is split-type structural greatly, as N485 diesel engine oil pump etc.It is the structure composition as shown in Figure 1, comprise the pump housing 1 and pump cover 2, be arranged in rotor pair 5, pump shaft 7, washer plate 6, pump shaft pin 8, oil pump gear 9, pressure-limit valve 10, the fixing bolt 11 that the inside and outside rotor of pump housing rotor chamber constitutes and be opened in turnover oil groove 3 and compositions such as 4 on the pump housing and the pump cover respectively.There is following defective in this structure: (1) because the pump housing and pump cover are separated, and the oil duct of oil pump is located on the pump housing and the pump cover, is subject to processing the influence of precision and assembly precision, the junction plane of the pump housing and pump cover is easy to generate the engine oil leakage phenomenon.(2) because the rigging position of oil pump is subjected to the restriction in space in diesel engine, its boundary dimension is restricted, after offering the oil duct groove on the said engine oil pump pump cover, the wall thickness of pump cover is thinner, after final assembly is to the diesel engine, the influence of the power that is squeezed, the pump cover easy deformation, can aggravate the generation of the pump housing, pump cover junction plane oil leakage phenomenon on the one hand, the generation meeting of pump cover deformation is given birth to influence to the rotor by-product in the rotor chamber on the other hand, cause the ineffective rotor pair that causes of the secondary rotation of rotor stuck easily, cause its fuel feeding to lose efficacy, make diesel engine produce the tile kilning phenomenon.
The purpose of this utility model is under the prerequisite that does not change existing oil pump installing space size, provides a kind of and can effectively prevent the oil pump engine oil leakage, and can eliminate the oil pump of oil pump deformation to the running influence of rotor pair.
The purpose of this utility model realizes by following technical solution:
Oil pump described in the utility model comprises a pump housing, establishes rotor chamber on the pump housing, and inside and outside rotor is installed in the rotor chamber, is characterized in offering respectively on the pump housing turnover oil groove, and pressure-limit valve is installed on the pump housing and goes out oil groove and communicate; It also comprises the capping of a postposition, and this capping is installed in the corresponding pump housing one side of oil pump gear and by the rotor chamber on a seal washer and the pump housing and forms sealing; Pump shaft one end passes the pump shaft hole offered on this capping and the pump housing and the internal rotor in the rotor chamber fixes by a fixing pin, and the other end of pump shaft stretches out this capping and is connected with oil pump gear; On the capping and the pump housing, correspondingly offer some bolts hole, oil pump complete machine and diesel engine are connected by fixing bolt.
The utility model has the advantages that: (1) is because the turnover oil groove directly is opened on the pump housing, the whole side of the pump housing contacts with diesel-engine body during assembling, the pump housing when making its assembling is directly stressed, the rigidity of assembly is improved greatly, can effectively eliminate the deformation influence, flexibility, the reliability of the secondary running of the rotor of oil pump greatly improve, and can effectively improve the oil supply performance of oil pump.(2) because the utility model changes the pump cover of original oil pump into the capping of postposition, be installed in a side of oil pump gear, and fix with packing ring and bolt and the pump housing, effectively avoided in capping, offering oil groove, can greatly improve capping intensity, thereby the area of contact of the capping and the pump housing is increased, be sealed on assembly when assembling and the suffered pressure relieve of pump housing surface of contact, effectively eliminate the stress and deformation of capping, turnover guarantees the sealability of capping seal washer, eliminates the seepage phenomenon of machine oil.(3) owing to need in capping, not offer the turnover oil groove, reduced the manufacturing procedure of engine oil pump assembly, can effectively reduce cost.
Below in conjunction with embodiment technical solution of the present utility model is described further:
Fig. 1 is the structural representation of existing oil pump;
Fig. 2 is a structural representation of the present utility model;
In Fig. 2, the 21st, the pump housing, on this pump housing, be provided with and rotor chamber interior dress external rotor 210, internal rotor 29,24, the 212nd, that offers on the pump housing goes out oil-feed tank, be connected with rotor chamber, the 23rd, the pressure-limit valve that is connected with oil groove, the 25th, capping, it is installed in the pump housing and oil pump gear 211 corresponding sides, and by the rotor chamber formation sealing of seal washer 26 with the pump housing; The 27th, pump shaft, its end is connected with oil pump gear 211, and the other end passes pump shaft hole in the capping 25 and the internal rotor 29 in the rotor chamber fixes by fixing pin 28; The 22nd, fixing bolt passes that corresponding some bolts hole of offering fix engine oil pump assembly and diesel engine on the capping and the pump housing.
Claims (1)
1. the rear-mounted oil pump of capping, comprise a pump housing (21), on this pump housing, be provided with rotor chamber, in external rotor (210) and internal rotor (29) are housed, it is characterized in that on this pump housing, offering respectively turnover oil groove (24,212), be installed on the pump housing pressure-limit valve (23) with go out oil groove and communicate; It also comprises the capping (25) of a postposition, and this capping is installed in and the corresponding pump housing one side of oil pump gear (211), and forms sealing by the rotor chamber on a seal washer (26) and the pump housing; One pump shaft (27) one ends pass the pump shaft hole offered on this capping and the pump housing and the internal rotor (29) in the rotor chamber fixes by a fixing pin (28), and the other end stretches out this capping and is connected with oil pump gear; On the capping and the pump housing, correspondingly be provided with some bolts hole, the oil pump complete machine be connected mutually with diesel engine by fixing bolt (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230169 CN2396210Y (en) | 1999-12-03 | 1999-12-03 | Cover postpositive machine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230169 CN2396210Y (en) | 1999-12-03 | 1999-12-03 | Cover postpositive machine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396210Y true CN2396210Y (en) | 2000-09-13 |
Family
ID=34019307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230169 Expired - Fee Related CN2396210Y (en) | 1999-12-03 | 1999-12-03 | Cover postpositive machine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396210Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003385A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Inner pump cover rotor oil pump installed on backside of pump cover |
| CN102128344A (en) * | 2010-06-04 | 2011-07-20 | 湖南机油泵股份有限公司 | Rotor oil pump with inner pump cover |
| CN102619731A (en) * | 2012-04-26 | 2012-08-01 | 上海酷风汽车部件有限公司 | Oil pump of compressor |
-
1999
- 1999-12-03 CN CN 99230169 patent/CN2396210Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128344A (en) * | 2010-06-04 | 2011-07-20 | 湖南机油泵股份有限公司 | Rotor oil pump with inner pump cover |
| CN102003385A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Inner pump cover rotor oil pump installed on backside of pump cover |
| CN102619731A (en) * | 2012-04-26 | 2012-08-01 | 上海酷风汽车部件有限公司 | Oil pump of compressor |
| CN102619731B (en) * | 2012-04-26 | 2015-07-08 | 上海酷风汽车部件有限公司 | Oil pump of compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiangsu Machine Oil Pump Factory Document name: Notice of termination |
|
| 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 |