CN2396209Y - Inserted machine oil pump - Google Patents
Inserted machine oil pump Download PDFInfo
- Publication number
- CN2396209Y CN2396209Y CN 99230168 CN99230168U CN2396209Y CN 2396209 Y CN2396209 Y CN 2396209Y CN 99230168 CN99230168 CN 99230168 CN 99230168 U CN99230168 U CN 99230168U CN 2396209 Y CN2396209 Y CN 2396209Y
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- CN
- China
- Prior art keywords
- rotor
- pump
- pump housing
- oil pump
- 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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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a lubricating oil pump, particularly a lubricating oil pump for diesel engine, comprising a pump body and a rotor block. The lubricating oil pump is characterized in that the rotor block embeds into the inner cavity of the pump body to form interference fit with the inner cavity, the rotor block is provided with a rotor cavity and the interior of the rotor cavity is provided with an outer rotor and an inner rotor, the inner rotor is fixed to a pump shaft by a fixing pin and the pump shaft passes through the central axle hole of the rotor block, and the lateral wall of the rotor block is provided with an in-out oil groove and the in-out oil groove is communicated with the rotor cavity and the in-out oil groove of the pump body. The lubricating oil pump has the advantages of good sealing performance, non phenomenon of oil seepage and gas leakage, high bearing accuracy, compact conformation, flexible operation and good reliability. The lubricating oil pump can be widely used for lubrication and oil feeding of all classes of diesel engines.
Description
The utility model relates to a kind of oil pump, refers to the oil pump of use for diesel engine especially.
Oil pump is the heart component of the lubrication system of internal-combustion engine, and is very big to the proper functioning and the influence in working life of internal-combustion engine.The oil pump of present widely used oil pump, especially use for diesel engine because design is unreasonable, exists many defectives.Its structure as shown in Figure 1, it is by the pump housing 1, pump cover 4, pump cover pad spare 3, pump shaft 8, external rotor 5, internal rotor 6, fixing pin 9 compositions such as grade.Mainly there is following defective in it: (1) owing to adopt the paper washer sealing between the pump housing and the pump cover, it is stressed and generally is no more than 10Kg/cm
2, and diesel engine it often is stressed and surpasses 10Kg/cm when cold start-up
2, sometimes up to 20-25Kg/cm
2, thereby causing engine oil leakage when starting easily, the cold start-up meeting causes paper washer to break repeatedly, makes diesel engine produce static seepage, can cause the normal lubricating function forfeiture of oil pump when serious, influences host work, until damage.(2) because its oil groove and turnover oilhole are opened in respectively on the pump cover and the pump housing, make it be subjected to the influence of machining accuracy big, cause the poor air-tightness of oil pump complete machine, easily produce gas leak phenomenon.(3) its pump shaft is by the pump housing and pump cover dual-gripper, and when causing assembly precision to reduce in the using process, pump shaft is big to the interference of inner and outer rotors, makes the fortune very flexible of rotor pair in rotor chamber, can not effectively guarantee the flexibility and the reliability of complete machine running.(4) assembling of oil pump complete machine, its pump housing and pump cover adopt locating stud 9 to connect, and when the final assembly precision reduces, are easy to generate out of stock phenomenon, cause the pump housing to separate with pump cover and come off.
The purpose of this utility model is at above-mentioned defective, provides a kind of and can effectively overcome engine oil leakage and gas leak phenomenon, and flexibility, the reliability height of complete machine running, the oil pump of compact structure.
The purpose of this utility model is can cross following technical solution to realize:
Oil pump described in the utility model, comprise a pump housing and a rotor body, the sidewall that is characterized in rotor body embeds in the inner chamber of the pump housing and forms interference fit with it, in this rotor body, be provided with a rotor chamber, having the turnover oil groove of offering on turnover oil groove and the rotor chamber and the pump housing on the sidewall of rotor body is connected, form the turnover oil duct, be provided with external rotor and internal rotor in the rotor chamber, internal rotor fixes by a fixing pin and the pump shaft that is applied in the rotor body central axis hole, and gapped between the end face of inner and outer rotors and rotor chamber.
The utility model has the advantages that: (1) rotor body is pressed in the pump housing by interference fit, make assembling and setting simple, Location accuracy improves, and guarantees the end clearance of inner and outer rotors and rotor chamber easily, thereby can effectively guarantee the flexibility and the reliability of inner and outer rotors running.(2) owing to be interference fit between the rotor body and the pump housing, the sealability of complete machine be can effectively guarantee, oil pump leakage of oil and gas leakage problem effectively solved.(3) owing to abandoned original oil pump is offered oil duct on the pump housing, pump cover structure, make oil duct design and process very conveniently, can realize the turbidity test that improved assembly by machining.Because the design of oil duct is more reasonable, can effectively improve the volumetric efficiency of oil pump simultaneously, can guarantee that the fuel-displaced time was less than 3 seconds.(4) owing to adopt the over-surplus fit structure of the rotor body and the pump housing, pump shaft is supported by rotor body, has both reduced the assembly part, can improve the precision of assembling again, can fundamentally eliminate the defective of original oil pump pump housing, the easy out of stock separation of pump cover, improve the Security and the reliability of complete machine running.And adopt this structure, and can make complete machine structure more compact, the complete machine process is dwindled, reduce materials consumption, it is about 1/4 that the comparable original oil pump of complete machine weight alleviates, and reduced cost.
Below in conjunction with embodiment the technical solution of the utility model is described further:
Fig. 1 is the structural representation of original oil pump;
Fig. 2 is an an embodiment's of the present utility model structural representation;
Fig. 3 is another an embodiment's of the present utility model schematic representation.
In Fig. 2, Fig. 3, the 21, the 31st, the pump housing, different is that the pump housing 21 is split type, is fixed with it by bonnet 26, packing ring 27 and set screw 210, the pump housing 31 is as a whole.All the other structures are identical.Between the sidewall of rotor body 23,33 and the inner chamber of the pump housing is over-surplus fit structure, embeds in the pump housing inner chamber.Be provided with rotor chamber in the rotor body 23,33, external rotor 28,38 and internal rotor 29,39 are housed respectively in the rotor chamber, and gapped between its inner and outer rotors and the rotor chamber end face, guarantee that it is in interior flexible rotation; Pump shaft 24,34 passes the central axis hole of rotor body and fixes by fixing pin 25,35 and internal rotor 29,39; Offer the turnover oil groove on the sidewall of rotor body 23,33, this oil groove is the blind hole vertical with the rotor body sidewall, and they are connected with turnover oil groove and the intracavity sidewall of the pump housing and bottom turnover oilhole in the rotor chamber respectively, constitute the turnover oil duct 22,32 of complete machine.
Claims (2)
1. embedded oil pump comprises the pump housing (21) and rotor body (23), and the sidewall that it is characterized in that rotor body (23) embeds in the inner chamber of the pump housing (21) and forms interference fit with it; Establish rotor chamber in this rotor body, have the turnover oil groove of offering on turnover oil groove and the rotor chamber and the pump housing on the sidewall and be connected to form and pass in and out oil duct (22), be provided with external rotor (28) and internal rotor (29) in the rotor chamber; Internal rotor (29) fixes by a fixing pin (25) and the pump shaft (24) that is applied in rotor body (23) central axis hole; And it is gapped between inner and outer rotors and the rotor chamber end face.
2. oil pump according to claim 1 is characterized in that the described pump housing (21) also comprises a bonnet (26), and this bonnet fixes with the pump housing (21) by a packing ring (27) and a plurality of fixed screw (210) that is located on the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230168 CN2396209Y (en) | 1999-12-03 | 1999-12-03 | Inserted machine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99230168 CN2396209Y (en) | 1999-12-03 | 1999-12-03 | Inserted machine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396209Y true CN2396209Y (en) | 2000-09-13 |
Family
ID=34019306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99230168 Expired - Fee Related CN2396209Y (en) | 1999-12-03 | 1999-12-03 | Inserted machine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396209Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389284C (en) * | 2004-03-24 | 2008-05-21 | 陈杰余 | Machine oil pump of I.C. engine |
| CN101846237A (en) * | 2010-03-03 | 2010-09-29 | 南京腾源机械制造有限公司 | Lubricating pump and special pump shaft thereof |
| CN102205599A (en) * | 2011-03-07 | 2011-10-05 | 韩金红 | Manufacturing process of oil outlet tray of gasoline pump and structure of oil outlet tray |
| CN103925209A (en) * | 2014-04-26 | 2014-07-16 | 山东科润机械股份有限公司 | Split type high-pressure common rail oil pump assembly for diesel engine |
| CN110094627A (en) * | 2019-05-29 | 2019-08-06 | 赛默新能源科技(济宁)有限公司 | A kind of electronics lubricating oil pump |
-
1999
- 1999-12-03 CN CN 99230168 patent/CN2396209Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389284C (en) * | 2004-03-24 | 2008-05-21 | 陈杰余 | Machine oil pump of I.C. engine |
| CN101846237A (en) * | 2010-03-03 | 2010-09-29 | 南京腾源机械制造有限公司 | Lubricating pump and special pump shaft thereof |
| CN101846237B (en) * | 2010-03-03 | 2012-11-21 | 南京腾源机械制造有限公司 | Lubricating pump and special pump shaft thereof |
| CN102205599A (en) * | 2011-03-07 | 2011-10-05 | 韩金红 | Manufacturing process of oil outlet tray of gasoline pump and structure of oil outlet tray |
| CN102205599B (en) * | 2011-03-07 | 2013-08-21 | 韩金红 | Manufacturing process of oil outlet tray of gasoline pump and structure of oil outlet tray |
| CN103925209A (en) * | 2014-04-26 | 2014-07-16 | 山东科润机械股份有限公司 | Split type high-pressure common rail oil pump assembly for diesel engine |
| CN110094627A (en) * | 2019-05-29 | 2019-08-06 | 赛默新能源科技(济宁)有限公司 | A kind of electronics lubricating oil pump |
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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 |