CN203363617U - Oil pump - Google Patents

Oil pump Download PDF

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Publication number
CN203363617U
CN203363617U CN 201320434197 CN201320434197U CN203363617U CN 203363617 U CN203363617 U CN 203363617U CN 201320434197 CN201320434197 CN 201320434197 CN 201320434197 U CN201320434197 U CN 201320434197U CN 203363617 U CN203363617 U CN 203363617U
Authority
CN
China
Prior art keywords
oil
oil pump
sealing
seal
shaft hole
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 - Lifetime
Application number
CN 201320434197
Other languages
Chinese (zh)
Inventor
欧阳丹
何磊
刘向晖
张文龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Motor Corp
Original Assignee
Dongfeng Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongfeng Motor Corp filed Critical Dongfeng Motor Corp
Priority to CN 201320434197 priority Critical patent/CN203363617U/en
Application granted granted Critical
Publication of CN203363617U publication Critical patent/CN203363617U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an oil pump and belongs to the technical field of oil pumps. The oil pump comprises an oil pump shell. An outer rotor is arranged in a shaft hole of the oil pump shell, an inner rotor is arranged in the outer rotor in a sleeved mode, an oil seal is arranged at the upper end of the shaft hole and seals the shaft hole, an oil seal inner side cavity is formed between the oil seal and the inner rotor, the lower end of the oil pump shell is connected with an oil pump cover, the outer end of the oil pump cover is connected with an oil bottom shell, an oil groove leading to the oil bottom shell is formed in the oil pump cover, an oil returning hole communicated with the oil seal inner side cavity is formed in the shaft hole wall of the portion, at the inner side of the oil seal, of the oil pump shell, and the oil returning hole is communicated with the oil groove. Engine oil accumulated at the inner side of the oil seal of the oil pump flows back to the oil bottom shell of an engine through the oil returning hole and the sealing function of the oil seal in the shaft hole position is guaranteed.

Description

A kind of oil pump
Technical field
The utility model belongs to the oil pump technical field, is specifically related to a kind of oil pump.
Background technique
Oil pump is used for providing enough lubricant oil to motor, the oil pump live axle needs rotation at a high speed in order to drive the oil pump running, must leave certain gap between Oil pump internal rotor and axis hole, pressure lubrication oil can be from the clearance leakage of internal rotor and axis hole out.At present more conventional way is to increase an oil sealing at the axis hole end, be used for preventing that oil leak from arriving outside body, but, after the oil sealing place accumulates a lot of lubricant oil, the seal action of oil sealing can lose efficacy.
The model utility content
The purpose of this utility model is for above-mentioned technical problem, and a kind of oil pump is provided, and this structure exports to engine sump tank by the machine oil of oil pump oil sealing place accumulation, guarantees the sealing of oil sealing.
For realizing that this purpose the technical solution adopted in the utility model is: it comprises the machine oil pump case, be provided with external rotor in the axis hole of described machine oil pump case, described external rotor inner sleeve has internal rotor, described axis hole upper end is provided with oil sealing sealing, form the oil sealing inner chambers between described oil sealing and internal rotor, described machine oil pump case lower end is connected with oil pump cover, described oil pump cover outer end is connected with oil sump, described oil pump cover is provided with the oil groove that leads to described oil sump, have the spill port be communicated with described oil sealing inner chambers on the axis hole wall of the machine oil pump case of described oil sealing inboard, described spill port is communicated with described oil groove.
The utility model is back to engine sump tank by the machine oil of the inboard accumulation of oil pump oil sealing by spill port, guarantees the seal action of axis hole place oil sealing.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is partial enlarged drawing one of the present utility model;
Fig. 3 is partial enlarged drawing two of the present utility model.
Wherein, 1-machine oil pump case, 2-oil pump cover, 3-external rotor, 4-internal rotor, 5-oil sealing, 6-oil sealing inner chambers, 7-spill port, 8-oil groove, 9-gap.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form and limit the utility model.
As shown in Figure 1-Figure 3, the utility model comprises machine oil pump case 1, be provided with external rotor 3 in the axis hole of machine oil pump case 1, external rotor 3 inner sleeves have internal rotor 4, form gap 9 between internal rotor 4 and oil pump columella hole, the axis hole upper end is provided with oil sealing 5 sealings, form oil sealing inner chambers 6 between oil sealing 5 and internal rotor 4, machine oil pump case 1 lower end is bolted organic oil pump cover 2, oil pump cover 2 outer ends are connected with oil sump, oil pump cover 2 is provided with the oil groove 8 that leads to oil sump, have the spill port 7 be communicated with oil sealing inner chambers 6 on the axis hole wall of the machine oil pump case 1 of oil sealing 5 inboards, spill port 7 is communicated with oil groove 8.
Working principle of the present utility model is: between internal rotor of lubricating pump 4 and oil pump columella hole, have gap 9, the pressure oil of oil pump inside leaks in oil sealing inner chambers 6 by the gap 9 between internal rotor 4 and axis hole, and the machine oil of oil sealing inner chambers 6 the inside accumulation discharge not in time can cause oil sealing 5 to lose efficacy.The utility model is by processing spill port 7 on the machine oil pump case 1 of oil sealing 5 inboards, be communicated with oil sealing inner chambers 6 and oil groove 8, oil groove 8 leads to oil sump, the machine oil of oil sealing inner chambers 6 the insides accumulation has arrived by spill port 7 earial drainages the sealing that oil sump has guaranteed oil sealing 5, thereby the machine oil that has guaranteed the 6 the inside accumulation of oil sealing inner chambers is discharged in time, guarantees the sealing of oil pump.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.

Claims (1)

1. an oil pump, it comprises the machine oil pump case, be provided with external rotor in the axis hole of described machine oil pump case, described external rotor inner sleeve has internal rotor, described axis hole upper end is provided with oil sealing sealing, form the oil sealing inner chambers between described oil sealing and internal rotor, described machine oil pump case lower end is connected with oil pump cover, described oil pump cover outer end is connected with oil sump, it is characterized in that: described oil pump cover is provided with the oil groove that leads to described oil sump, have the spill port be communicated with described oil sealing inner chambers on the axis hole wall of the machine oil pump case of described oil sealing inboard, described spill port is communicated with described oil groove.
CN 201320434197 2013-07-19 2013-07-19 Oil pump Expired - Lifetime CN203363617U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320434197 CN203363617U (en) 2013-07-19 2013-07-19 Oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320434197 CN203363617U (en) 2013-07-19 2013-07-19 Oil pump

Publications (1)

Publication Number Publication Date
CN203363617U true CN203363617U (en) 2013-12-25

Family

ID=49811376

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320434197 Expired - Lifetime CN203363617U (en) 2013-07-19 2013-07-19 Oil pump

Country Status (1)

Country Link
CN (1) CN203363617U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240674A (en) * 2015-11-04 2016-01-13 湖南机油泵股份有限公司 Novel exterior rotor type oil pump
CN109854933A (en) * 2019-04-08 2019-06-07 湖南机油泵股份有限公司 A kind of rotor pump structure of integrated water pump
CN109899670A (en) * 2019-04-08 2019-06-18 湖南机油泵股份有限公司 A kind of pair of main oil gallery oil pressure carries out the impeller pump of feedback regulation
CN109931489A (en) * 2019-04-08 2019-06-25 湖南机油泵股份有限公司 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240674A (en) * 2015-11-04 2016-01-13 湖南机油泵股份有限公司 Novel exterior rotor type oil pump
CN109854933A (en) * 2019-04-08 2019-06-07 湖南机油泵股份有限公司 A kind of rotor pump structure of integrated water pump
CN109899670A (en) * 2019-04-08 2019-06-18 湖南机油泵股份有限公司 A kind of pair of main oil gallery oil pressure carries out the impeller pump of feedback regulation
CN109931489A (en) * 2019-04-08 2019-06-25 湖南机油泵股份有限公司 A kind of impeller pump convenient for remaining oil liquid to be discharged into oil sump

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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: 20131225

CU01 Correction of utility model
CU01 Correction of utility model

Correction item: Termination upon expiration of patent

Correct: Revocation of Patent Expiration and Termination

False: Expiration and Termination of 39 Volume 3102 Patent on August 4, 2023

Number: 31-02

Volume: 39