CN1205415C - Gear pump - Google Patents

Gear pump Download PDF

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Publication number
CN1205415C
CN1205415C CN 02156249 CN02156249A CN1205415C CN 1205415 C CN1205415 C CN 1205415C CN 02156249 CN02156249 CN 02156249 CN 02156249 A CN02156249 A CN 02156249A CN 1205415 C CN1205415 C CN 1205415C
Authority
CN
China
Prior art keywords
safety valve
gear pump
pump
pump shell
pump case
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
Application number
CN 02156249
Other languages
Chinese (zh)
Other versions
CN1420278A (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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  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

The present invention relates to a gear pump which mainly comprises a pump shell, a front cover and a back cover, wherein a safety valve is arranged on the pump shell and is communicated with an inner cavity of the pump shell. A needle bearing is arranged in a figure eight-shaped seat in the pump shell. The safety valve is arranged on the back cover of the pump shell. The position on the front cover, which is matched with an output shaft, is provided with a sealing ring which form double-layer seal with oil seal. The safety valve is an overflow valve. The present invention has the advantages that because the needle bearing is arranged in the figure eight-shaped seat, the gear pump can effectively prevent a clamping phenomenon from occurring; due to the adoption of the safety valve, the gear pump can solve the safety problem generated by overhigh pressure of the inner cavity so as to have safe and reliable performance.

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; On protecgulum, be provided with seal ring, constitute double-layer seal with oil sealing with the output shaft place of matching.
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, 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 (5)

1, a kind of gear pump, mainly comprise pump case (1), protecgulum (2) and bonnet (3), it is characterized in that: safety valve (6) is housed on pump case (1), safety valve (6) and pump case (1) intracavity inter-connection, upward be provided with seal ring (8) at protecgulum (2), constitute double-layer seal with oil sealing (9) with output shaft (7) place of matching.
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 is characterized in that: described safety valve (6) is a relief valve.
5, 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 CN1420278A (en) 2003-05-28
CN1205415C true 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)

Families Citing this family (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
DE112010004908A5 (en) * 2009-12-21 2012-10-25 Schaeffler Technologies AG & Co. KG hydraulic control

Also Published As

Publication number Publication date
CN1420278A (en) 2003-05-28

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
PP01 Preservation of patent right

Effective date of registration: 20050415

Pledge (preservation): Preservation

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

ASS Succession or assignment of patent right

Owner name: TU JIALI

Free format text: FORMER OWNER: TU XUELONG

Effective date: 20110504

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 311602 BAOJIA VILLAGE, QIANTAN TOWN, JIANDE, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 311602 NO. 10, ZHUANGTAIWU, BAOJIA, XINCHENG VILLAGE, QIANTAN TOWN, JIANDE CITY, HANGZHOU CITY, ZHEJIANG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20110504

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

Patentee after: Tu Jiali

Address before: Hangzhou City, Zhejiang province 311602 Jiande Qiantan package Village

Patentee before: Tu Xuelong

ASS Succession or assignment of patent right

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

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Effective date: 20111014

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TR01 Transfer of patent right

Effective date of registration: 20111014

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

Patentee after: Yuankun Hydraulic Mechanical Co., Ltd.

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

Patentee before: Tu Jiali

ASS Succession or assignment of patent right

Owner name: TU XUELONG

Free format text: FORMER OWNER: HANGZHOU YUANKUN HYDRAULIC MECHANICAL CO., LTD.

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C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 311604 HANGZHOU, ZHEJIANG PROVINCE TO: 311602 HANGZHOU, ZHEJIANG PROVINCE

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

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

Patentee before: Yuankun Hydraulic Mechanical Co., Ltd.

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