CN101984257B - Balanced type crescent seal gear pump - Google Patents

Balanced type crescent seal gear pump Download PDF

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Publication number
CN101984257B
CN101984257B CN2010105318332A CN201010531833A CN101984257B CN 101984257 B CN101984257 B CN 101984257B CN 2010105318332 A CN2010105318332 A CN 2010105318332A CN 201010531833 A CN201010531833 A CN 201010531833A CN 101984257 B CN101984257 B CN 101984257B
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CN
China
Prior art keywords
gear
pump
pump housing
external gear
pump body
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
CN2010105318332A
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Chinese (zh)
Other versions
CN101984257A (en
Inventor
张建卓
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.)
Liaoning Technical University
Original Assignee
Liaoning Technical University
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 Liaoning Technical University filed Critical Liaoning Technical University
Priority to CN2010105318332A priority Critical patent/CN101984257B/en
Publication of CN101984257A publication Critical patent/CN101984257A/en
Application granted granted Critical
Publication of CN101984257B publication Critical patent/CN101984257B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention belongs to hydraulic elements in machinery industry, in particular to a balanced type crescent seal gear pump which comprises a pump body 1 (7), a main shaft (10), a front pump cover (11), an end cover (9), a rear pump cover (18), an inner gear 1 (5), an outer gear 1 (6) and the like, wherein the left side of the pump body 1 (7) is fixedly provided with a pump body 2 (15) through a locating pin (3) and a sealing ring; the left and right sides of the outer gear 1 (6) on the main shaft (10) in the pump body 1 (7) and pump body 2 (15) are respectively provided with an outer gear 3 (17) and an outer gear 2 (13) at equal intervals through a key (4); and an inner gear 2 (14) and an inner gear 3 (16) are respectively arranged in the pump body 1 (7) and the pump body 2 (15) corresponding to the outer gear 2 (13) and the outer gear 3 (17). The balanced type crescent seal gear pump reduces the action born by the bearing by the radial force born by a balance shaft, thus preventing the glue of the crescent seal gear pump from being failed.

Description

The balanced type crescent gear pump
Technical field
The invention belongs to the hydraulic element in the mechanical industry, particularly a kind of balanced type crescent gear pump.
Background technique
Crescent gear pump is because its oil sucting cavity and the bigger hydraulic coupling of pressure transition district external gear wheel; Make the axle of connection external gear and the bearing of back shaft receive big radial force; Make axle produce distortion, influence the working life of parts such as gear pump bearing, reduce the transmission accuracy and the mechanical efficiency of gear.Simultaneously because oil sucting cavity and pressure transition district also produce bigger hydraulic coupling to internal gear; Make the internal gear outer wall produce big pressure, in the high-speed rotation process, will produce violent friction like insufficient lubrication to the pump housing; The internal gear and the pump housing are glued together, cause crescent gear pump to lose efficacy.
Summary of the invention
The objective of the invention is to overcome above-mentioned technical deficiency, a kind of prolongation Pump Body Parts working life is provided, improve the transmission accuracy of gear pump and the balanced type crescent gear pump of mechanical efficiency.
The technological scheme that technical solution problem of the present invention adopts is: the balanced type crescent gear pump comprises the pump housing one, main shaft, front pump cover, end cap, rear pump cover, internal gear one, external gear one, key, locating stud, rolling bearing, sliding bearing, fixing bolt, oil sealing; Be characterized in locating stud and seal ring the pump housing two being housed fixedly in the left side of the pump housing one; External gear one and arranged on left and right sides is equidistant with key dress external gear three and external gear two on the main shaft in the pump housing one and the pump housing two; Corresponding external gear two is established internal gear two and internal gear three with external gear three in the pump housing one and the pump housing two; The width of inside and outside gear two and inside and outside gear three is 1/2nd of inside and outside gear one width, and symmetry has crescent shape static pressure support slot on the pump housing one in the zone of high pressure and the pump housing two inwalls.
The invention has the beneficial effects as follows: the balanced type crescent gear pump reduces the suffered active force of bearing through the suffered radial force of trunnion shaft, thereby prolongs part life such as bearing and improve the transmission accuracy and the mechanical efficiency of gear.And, reduce the friction between internal gear outer wall and the pump housing inwall through the suffered hydraulic coupling of balance internal gear, prevent the crescent gear pump scuffing failure.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is a balanced type inside engaged gear pump structure sectional view.
Fig. 2 is the A-A sectional view among Fig. 1.
Fig. 3 is the B-B sectional view among Fig. 1.
Fig. 4 is the C-C sectional view among Fig. 1.
Among the figure, the 1-fixing bolt; The 2-sliding bearing; The 3-locating stud; The 4-key; 5-internal gear one; 5-1-internal gear one bottom land hole; 6-external gear one; The 7-pump housing one; 7-1-meniscus one; 7-2-meniscus two; 7-3-static pressure support slot; The 8-rolling bearing; The 9-end cap; The 10-main shaft; The 11-front pump cover; The 12-oil sealing; 13-external gear two; 14-internal gear two; 14-1-internal gear two bottom land holes; The 15-pump housing two; 15-1-meniscus three; 16-internal gear three; 16-1-internal gear three-flute bottom outlet; 17-external gear three; The 18-rear pump cover; The 19-screw;
Embodiment
Embodiment, with reference to accompanying drawing 1~4, the pump housing 2 15 fixedly is equipped with locating stud 3 and seal ring in the pump housing one 7 left sides of balanced type crescent gear pump.In the pump housing 1 and the pump housing 2 15 center holes, main shaft 10 is housed with sliding bearing 2.In the pump housing 1, adorn external gears 1 with key 4 on the main shaft 10 in left side; Establish internal gear 1 in the pump housing 1 of corresponding external gear 1 with external gear one 6 engagements; Between internal gear 1 and external gear 1, establish meniscus one 7-1; Meniscus one 7-1 and the pump housing 1 are one, on internal gear 1, establish two several internal gears of row, one bottom land hole 5-1.In the pump housing 1, adorn external gears 2 13 with key 4 on the main shaft 10 on right side; The internal gear 2 14 of dress and external gear 2 13 engagements in the pump housing 1 of corresponding external gear 13; Between internal gear 2 14 and external gear 2 13, establish with the pump housing 1 and be meniscus two 7-2 of one, on internal gear 2 14, establish several internal gears of row two bottom land hole 14-1.In the pump housing 2 15, adorn external gears 3 17 with key 4 on the main shaft 10 in left side; The internal gear 3 16 of dress and external gear 3 17 engagements in the pump housing 2 15 of corresponding external gear 3 17; Between internal gear 3 16 and external gear 3 17, establish with the pump housing 2 15 and be meniscus three 15-1 of one, establish several internal gear three-flute bottom outlets of row 16-1 on the internal gear 3 16.External gear 3 17 is equidistance with external gear 2 13 with external gear one 6 left and right sides distance.Symmetry has crescent shape static pressure support slot 7-3 on the pump housing 1 in the zone of high pressure and the inwall of the pump housing 15.On the left surface of the pump housing 2 15, with locating stud 3 and seal ring dress rear pump cover 18, on the right flank of the pump housing 1, adorn front pump cover 11, forward and backward pump cover 11,18 is fastening with the pump housing 1, the pump housing 2 15 usefulness fixing bolts 1.Adorn end caps 9 with screw 19 on the main shaft 10 in front pump cover 11, and, establish rolling bearing 8 between end cap 9 and the front pump cover 11 with oil sealing 12 sealings.
The working principle of balanced type crescent gear pump be internal gear one, two, 35,14,16 and external gear one, two, 36,13,17 form three crescent gear pumps; Fluid sucks through internal gear one, two, three-flute bottom outlet 5-1,14-1,16-1 and pump intake (arrow points); 5-1,14-1,16-1 and pump discharge (arrow points) extrude from the bottom land hole again; Make and connect three external gears one, two, 36,13,17 main shaft 10 and sliding bearing 2 and rolling bearing 8 force in radial balances; Prolong the working life of bearing 2 and 8, the pump housing one two 7,15 in the zone of high pressure is opened static pressure support slot 7-3 on the inwall; High pressure oil is balanced each other to the hydraulic coupling that internal gear one, two, 35,14,16 inside and outside wall produce, thereby prevent the crescent gear pump gummed.

Claims (1)

1. balanced type crescent gear pump; Comprise the pump housing one (7), main shaft (10), front pump cover (11), end cap (9), rear pump cover (18), internal gear one (5), external gear one (6), key (4), locating stud (3), rolling bearing (8), sliding bearing (2), fixing bolt (1), oil sealing (12); It is characterized in that with locating stud (3) and seal ring the pump housing two (15) being housed fixedly in the left side of the pump housing one (7); It is equidistant with key (4) dress external gear three (17) and external gear two (13) that main shaft (10) in the pump housing one (7) and the pump housing two (15) is gone up external gear one (6) and arranged on left and right sides; Corresponding external gear two (13) and external gear three (17) are established internal gear two (14) and internal gear three (16) in the pump housing one (7) and the pump housing two (15); The width of inside and outside gear two (14,13) and inside and outside gear three (16,17) is 1/2nd of inside and outside gear one (5, a 6) width, and symmetry has crescent shape static pressure support slot (7-3) on the pump housing one (7) in the zone of high pressure and the pump housing two (15) inwalls.
CN2010105318332A 2010-10-30 2010-10-30 Balanced type crescent seal gear pump Expired - Fee Related CN101984257B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105318332A CN101984257B (en) 2010-10-30 2010-10-30 Balanced type crescent seal gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105318332A CN101984257B (en) 2010-10-30 2010-10-30 Balanced type crescent seal gear pump

Publications (2)

Publication Number Publication Date
CN101984257A CN101984257A (en) 2011-03-09
CN101984257B true CN101984257B (en) 2012-03-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105318332A Expired - Fee Related CN101984257B (en) 2010-10-30 2010-10-30 Balanced type crescent seal gear pump

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012001462A1 (en) * 2012-01-25 2013-07-25 Robert Bosch Gmbh Internal gear pump comprises control bevel, which is provided in area of sealing segment side facing hollow wheel, and is extended out in peripheral direction of hollow wheel and broadens opening area of control groove
CN103291611A (en) * 2012-02-24 2013-09-11 常州大学 Novel gear pump with deformable internal gear
CN111997893B (en) * 2020-09-10 2022-10-14 中国计量大学 Flexible low linear velocity tooth-type molded line meshing wearable pump for robot arm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093006A (en) * 1997-03-22 2000-07-25 Voith Turbo Gmbh & Co. Kg Non-crescent seal internal gear pump with sealing elements inserted in the tooth tips
EP1039135A2 (en) * 1999-03-26 2000-09-27 Voith Turbo GmbH & Co. KG Internal gear pump with sealings incorporated in the teeth
CN201129295Y (en) * 2007-08-17 2008-10-08 宁波高新协力机电液有限公司 High pressure gear ring pump internal tooth ring static pressure unloading device
CN201827069U (en) * 2010-10-30 2011-05-11 辽宁工程技术大学 Balanced type internal-gearing gear pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3641760B2 (en) * 1995-07-07 2005-04-27 株式会社前川製作所 Fluid machine with trochoidal tooth profile

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6093006A (en) * 1997-03-22 2000-07-25 Voith Turbo Gmbh & Co. Kg Non-crescent seal internal gear pump with sealing elements inserted in the tooth tips
EP1039135A2 (en) * 1999-03-26 2000-09-27 Voith Turbo GmbH & Co. KG Internal gear pump with sealings incorporated in the teeth
CN201129295Y (en) * 2007-08-17 2008-10-08 宁波高新协力机电液有限公司 High pressure gear ring pump internal tooth ring static pressure unloading device
CN201827069U (en) * 2010-10-30 2011-05-11 辽宁工程技术大学 Balanced type internal-gearing gear pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开平9-25882A 1997.01.28

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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
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20110309

Assignee: Fuxin Huili Fluid Driving Co., Ltd.

Assignor: Liaoning Technical University

Contract record no.: 2013210000009

Denomination of invention: Balanced type crescent seal gear pump

Granted publication date: 20120328

License type: Exclusive License

Record date: 20130320

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120328

Termination date: 20161030