CN1420278A - Gear pump - Google Patents

Gear pump Download PDF

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Publication number
CN1420278A
CN1420278A CN 02156249 CN02156249A CN1420278A CN 1420278 A CN1420278 A CN 1420278A CN 02156249 CN02156249 CN 02156249 CN 02156249 A CN02156249 A CN 02156249A CN 1420278 A CN1420278 A CN 1420278A
Authority
CN
China
Prior art keywords
gear pump
safety valve
pump case
pump according
protecgulum
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.)
Granted
Application number
CN 02156249
Other languages
Chinese (zh)
Other versions
CN1205415C (en
Inventor
涂雪龙
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.)
Tu Xuelong
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN 02156249 priority Critical patent/CN1205415C/en
Publication of CN1420278A publication Critical patent/CN1420278A/en
Application granted granted Critical
Publication of CN1205415C publication Critical patent/CN1205415C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

A gear pump is composed of casing with safety valve (overflow valve) and needle bearing, pump body, front end cover, back end cover and sealing ring between front cover and output axle. Its advantages are no jam, and high safety.

Description

A kind of gear pump
Technical field
The present invention relates to the oil hydraulic pump field, especially a kind of gear pump.
Background technique
The conventional tooth wheel pump owing to structural reason, after part adopts new material, problem stuck and that burst occurs through regular meeting, even can occur because the safety problem of the too high generation of chamber pressure.Although safety valve is housed, chamber pressure safety there is certain effect on distributor; But effect is not really desirable, and has the dead angle on the distributor.
Summary of the invention
The purpose of this invention is to provide the stuck problem of a kind of effective solution, and the safe and reliable gear pump of performance.
The technical solution adopted for the present invention to solve the technical problems.This gear pump mainly comprises pump case, protecgulum and bonnet, and safety valve is housed on pump case, safety valve and pump case intracavity inter-connection.
The technical solution adopted for the present invention to solve the technical problems can also be further perfect.Be provided with needle bearing in the Eight characters seat in pump case.On the bonnet of pump case, safety valve is housed.On protecgulum, be provided with seal ring, constitute double-layer seal with oil sealing with the output shaft place of matching.Described safety valve is a relief valve.
The effect that the present invention is useful is: owing to be provided with needle bearing in Eight characters seat, therefore can effectively prevent the generation of stuck phenomenon; Adopt safety valve, can solve the safety problem of the too high generation of chamber pressure, so performance is safe and reliable.
Description of drawings
Fig. 1 is master's TV structure schematic representation of the present invention;
Fig. 2 is the right TV structure schematic representation of the present invention;
Embodiment:
Below in conjunction with embodiment the present invention is further described.As shown in Figure 1, this gear pump comprises pump case 1, protecgulum 2 and bonnet 3, is provided with needle bearing 5 in the Eight characters seat 4 in pump case 1, and relief valve 6 is housed on bonnet 3, relief valve 6 and pump case 1 intracavity inter-connection.When overpressure, relief valve 6 is opened, and reduces pressure by spill port 10.On protecgulum 2, be provided with seal ring 8, constitute double-layer seal with oil sealing 9, to increase sealing effect with output shaft 7 places of matching.

Claims (7)

1, a kind of gear pump mainly comprises pump case (1), protecgulum (2) and bonnet (3), it is characterized in that: safety valve (6) is housed, safety valve (6) and pump case (1) intracavity inter-connection on pump case (1).
2, gear pump according to claim 1 is characterized in that: be provided with needle bearing (5) in the Eight characters seat (4) in pump case (1).
3, gear pump according to claim 1 and 2 is characterized in that: on the bonnet (3) of pump case (1) safety valve (6) is housed.
4, gear pump according to claim 1 and 2 is characterized in that: go up at protecgulum (2) and be provided with seal ring (8) with output shaft (7) place of matching, constitute double-layer seal with oil sealing (9).
5, gear pump according to claim 3 is characterized in that: go up at protecgulum (2) and be provided with seal ring (8) with output shaft (7) place of matching, constitute double-layer seal with oil sealing (9).
6, gear pump according to claim 1 is characterized in that: described safety valve (6) is a relief valve.
7, gear pump according to claim 3 is characterized in that: described safety valve (6) is a relief valve.
CN 02156249 2002-12-11 2002-12-11 Gear pump Expired - Fee Related CN1205415C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02156249 CN1205415C (en) 2002-12-11 2002-12-11 Gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02156249 CN1205415C (en) 2002-12-11 2002-12-11 Gear pump

Publications (2)

Publication Number Publication Date
CN1420278A true CN1420278A (en) 2003-05-28
CN1205415C CN1205415C (en) 2005-06-08

Family

ID=4752717

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02156249 Expired - Fee Related CN1205415C (en) 2002-12-11 2002-12-11 Gear pump

Country Status (1)

Country Link
CN (1) CN1205415C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429403C (en) * 2006-12-29 2008-10-29 哈尔滨工业大学 Gear pump with built in outer controlled overflow valve
CN102713296A (en) * 2009-12-21 2012-10-03 舍弗勒技术股份两合公司 Hydraulic control apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100429403C (en) * 2006-12-29 2008-10-29 哈尔滨工业大学 Gear pump with built in outer controlled overflow valve
CN102713296A (en) * 2009-12-21 2012-10-03 舍弗勒技术股份两合公司 Hydraulic control apparatus
CN102713296B (en) * 2009-12-21 2015-11-25 舍弗勒技术股份两合公司 Hydraulic control apparatus

Also Published As

Publication number Publication date
CN1205415C (en) 2005-06-08

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Effective date of registration: 20050415

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PD01 Discharge of preservation of patent

Date of registration: 20051015

Pledge (preservation): Preservation

EE01 Entry into force of recordation of patent licensing contract

Assignee: Ningbo Jushen Pumps Industry Co., Ltd.

Assignor: Tu Xuelong

Contract fulfillment period: 2008.7.5 to 2013.7.5

Contract record no.: 2008330000678

Denomination of invention: Process of casting gear pump rear cover

Granted publication date: 20050608

License type: Exclusive license

Record date: 20080926

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.5 TO 2013.7.5; CHANGE OF CONTRACT

Name of requester: NINGBO JUSHEN PUMP-MAKING INDUSTRY CO.,LTD.

Effective date: 20080926

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Owner name: TU JIALI

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TR01 Transfer of patent right

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Address after: Jiande Qiantan Xincheng village in Hangzhou City, Zhejiang province 311602 Bao Jia Zhuang station dock No. 10

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Owner name: HANGZHOU YUANKUN HYDRAULIC MECHANICAL CO., LTD.

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TR01 Transfer of patent right

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Address after: 311604, Zhejiang province Jiande town Mei family village

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Address before: Jiande Qiantan Xincheng village in Hangzhou City, Zhejiang province 311602 Bao Jia Zhuang station dock No. 10

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TR01 Transfer of patent right

Effective date of registration: 20121102

Address after: 311602 Zhejiang province Jiande Qiantan family village station dock No. 10

Patentee after: Tu Xuelong

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20050608

Termination date: 20141211

EXPY Termination of patent right or utility model