CN2900865Y - Inside engaged gear pump - Google Patents

Inside engaged gear pump Download PDF

Info

Publication number
CN2900865Y
CN2900865Y CN 200620070868 CN200620070868U CN2900865Y CN 2900865 Y CN2900865 Y CN 2900865Y CN 200620070868 CN200620070868 CN 200620070868 CN 200620070868 U CN200620070868 U CN 200620070868U CN 2900865 Y CN2900865 Y CN 2900865Y
Authority
CN
China
Prior art keywords
crescent
gear
pump
shaped separator
ring gear
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 200620070868
Other languages
Chinese (zh)
Inventor
吴涛慧
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.)
Individual
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 200620070868 priority Critical patent/CN2900865Y/en
Application granted granted Critical
Publication of CN2900865Y publication Critical patent/CN2900865Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Rotary Pumps (AREA)

Abstract

The utility model relates to an inner gearing wheel pump comprising a transmission shaft, a pump body, a pair of mutual inner gearing pinion and an inner gear ring, a crescent demarcation strip, a ventro-plate, a posterior lateral plate or the like, wherein the crescent demarcation strip disposed between the pinion and the inner gear ring forms two unaided close space between the draw oil reservoir and the press oil reservoir, two ends of the crescent demarcation strip is disposed in the crescent groove of the ventro-plate and the posterior lateral plate, the right position of the crescent demarcation strip relative to the pinion and the inner gear ring is located by two straight pins. The utility model has the advantages of simple structure, steady delivery pressure, small fret; and the reduced inner gearing wheel pump manufacture problem.

Description

Crescent gear pump
Technical field
The utility model belongs to the fluid machinery technical field, is specifically related to a kind of crescent gear pump.
Background technique
Crescent gear pump is usually by the pump housing A of band endoporus, the ring gear B that in pump housing endoporus, rotates, and with the small gear C of ring gear engagement, parts such as the crescent shape divider D between ring gear and the small gear are formed, and structure is seen Fig. 1.Because the effect of crescent-shaped separator forms two enclosed spaces---oil sucting cavity and pumping cavity between small gear and the ring gear.Ring gear is also with the equidirectional rotation when the direction of arrow rotate when transmission shaft drives small gear by key, because the variation of oil sucting cavity and pumping cavity volume is brought into oil by oil sucting cavity, pumping cavity is discharged, and realizes the oily process of pump.The crescent gear pump of prior art is a kind of to be that the crescent shape divider and the pump housing are processed into integral body, complex process, and difficulty of processing is big.Another kind is that a side of crescent shape divider adopts straight pin to be positioned on the pump housing, installation strength is low, be not suitable in high-pressure service pump, adopting this method, need to increase the position of thickness to guarantee that straight pin is installed of swing link simultaneously, thereby influence the compactedness of the structure of oil pump.
Summary of the invention
The purpose of this utility model is exactly in order to address the above problem, and provides a kind of simple in structure, processing easily, but the inside engaged gear pump structure of high pressure output oil.
The purpose of this utility model is by changing pump body structure, reaching from the purpose of two ends installing and locating crescent-shaped separator, referring to Fig. 2, shown in Figure 3.Its structure constituent element and existing gear pump are different, that is: by the pump housing 8 that contains endoporus, the ring gear 9 that can in endoporus, rotate, and the small gear 10 of ring gear 9 engagements, drive the crescent-shaped separator 7 between transmission shaft 1, small gear 10 and the ring gear 9 that small gear 10 rotates and fixedly the front side plate 6, back side panel 11 etc. at crescent-shaped separator two ends are formed.Front side plate 6, back side panel 11 are provided with the crescent-shaped separator groove, see Fig. 4, shown in Figure 5.Front side plate 6 back side panels 11 and crescent-shaped separator 7 become two independently Seal cages---oil sucting cavity and pumping cavity with the separated by spaces between small gear 10 and the ring gear 9.Be provided with annular distributing groove with the adjacent side plate of oil inlet and outlet, see shown in Figure 5.The annular distributing groove communicates with the enterprising oil outlet of pump cover.
Crescent-shaped separator 7 utilizes its up and down gap of arc-shaped surface (seeing shown in Figure 6) and small gear and ring gear tooth top, utilizes on demarcation strip two ends and the forward and backward side plate crescent-shaped separator groove again and utilizes the demarcation strip both ends of the surface and oil pump protecgulum, the gap realization oil sucting cavity of bonnet interior edge face and the sealing of pumping cavity.The material of forward and backward side plate and crescent-shaped separator can be selected high-abrasive material for use, and the parts depreciation that reduces in the working procedure guarantees reliable sealing simultaneously again.
In the utility model crescent gear pump, adopt five slice structures, that is: protecgulum 5, front side plate 6, the pump housing 8, back side panel 11, bonnet 13.Each sheet relative position adopts two straight pins, 12 location.
In the utility model crescent gear pump, also can adopt the three pieces type structure, see shown in Figure 7.That is: protecgulum A5, pump housing A8 bonnet A13.Each sheet relative position adopts the straight pin location.Wherein processing crescent-shaped separator groove on protecgulum A5, bonnet A13 interior edge face is provided with the sealing that rubber gasket A18 guarantees the crescent-shaped separator two ends in the groove.
The utility model crescent gear pump has the oil motor function, injects high pressure oil at oil sucting cavity, then specified rotating speed and the torque of transmission shaft output.
Description of drawings
Fig. 1 is the prior art structural drawing
Fig. 2 is the general structure distribution map
Fig. 3 is the A-A sectional view of Fig. 2
Fig. 4 is the structural drawing that does not have the side plate of annular distributing groove
Fig. 5 is the structural drawing that the side plate of annular distributing groove is arranged
Fig. 6 is the structural drawing of crescent-shaped separator
Fig. 7 is the structural drawing of three pieces type crescent gear pump
Label among Fig. 2: 1 is transmission shaft, and 2 is seal ring, and 3 is the flange circle, 4 is bearing shell, and 5 is protecgulum, and 6 is front side plate, 7 is crescent-shaped separator, and 8 is the pump housing, and 9 is ring gear, 10 is small gear, and 11 is back side panel, and 12 is straight pin, 13 is bonnet, and 14 is back-up ring, and 15 is stifle, 16 is O-ring seals, and 17 is screw;
Label among Fig. 7: A5 is the protecgulum that is provided with the crescent-shaped separator groove, and A8 is the pump housing, and A13 is the bonnet that is provided with the crescent-shaped separator groove, and A18 is a rubber gasket.
Embodiment
Specifically describe the utility model below by embodiment
Fig. 2 Fig. 3 represents an embodiment of model utility, and the length of crescent shape isolating plate equals the thickness sum of front side plate, the pump housing, back side panel.The small gear of crescent gear pump is connected with transmission shaft by flat key, and transmission shaft is bearing in respectively in the hole of protecgulum, bonnet by bearing shell.The two ends of transmission shaft have flange circle, seal ring and stifle to seal.The axial float of back-up ring restriction transmission shaft.Protecgulum, bonnet, front side plate, the pump housing, back side panel and bonnet are located by connecting with straight pin and are integral.Ring gear is positioned in the pump housing endoporus and pinion.Be provided with annular distributing groove with the adjacent side plate of oil inlet and outlet, annular distributing groove communicates with the enterprising oil outlet of pump cover.Crescent-shaped separator is inserted in respectively by two ends in the crescent moon board slot of front side plate and back side panel between the gear teeth of ring gear and small gear.Guaranteed that the sealing of turnover oil pocket has guaranteed the installation strength of crescent-shaped separator again, helps improving the delivery pressure of oil pump.

Claims (3)

1. crescent gear pump: by the pump housing of band endoporus, the ring gear that can in endoporus, rotate, small gear with the ring gear engagement, drive the transmission shaft of pinion rotation, crescent-shaped separator between small gear and the ring gear, be provided with the fixedly front side plate of crescent-shaped separator groove, back side panel and protecgulum, bonnet is formed, swing link shape demarcation strip and front side plate, back side panel becomes small gear that two independently Seal cages---oil sucting cavity and pumping cavity is characterized in that with separated by spaces between the ring gear: in the pump housing both sides position that the crescent-shaped separator groove is used for fixing crescent-shaped separator is set.
2. crescent gear pump according to claim 1 is characterized in that: on the side plate adjacent with the turnover oilhole annular distributing groove is set, annular distributing groove communicates with the turnover oilhole.
3. it is characterized in that according to right 1 described crescent gear pump: the thickness of the pump housing equates with the thickness of ring gear.
CN 200620070868 2006-03-31 2006-03-31 Inside engaged gear pump Expired - Fee Related CN2900865Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620070868 CN2900865Y (en) 2006-03-31 2006-03-31 Inside engaged gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620070868 CN2900865Y (en) 2006-03-31 2006-03-31 Inside engaged gear pump

Publications (1)

Publication Number Publication Date
CN2900865Y true CN2900865Y (en) 2007-05-16

Family

ID=38085028

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620070868 Expired - Fee Related CN2900865Y (en) 2006-03-31 2006-03-31 Inside engaged gear pump

Country Status (1)

Country Link
CN (1) CN2900865Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101793249A (en) * 2008-12-09 2010-08-04 罗伯特·博世有限公司 Gear pump
CN102022319A (en) * 2010-12-02 2011-04-20 湖南机油泵股份有限公司 Oil pump with inside engaged gear
CN102588271A (en) * 2012-03-06 2012-07-18 佛山市顺德区中意液压有限公司 Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof
CN103291609A (en) * 2012-02-24 2013-09-11 常州大学 Biaxial harmonic gear pump
CN106943682A (en) * 2017-04-07 2017-07-14 南京信息职业技术学院 A kind of hydraulic pump type damps reciprocal lifesaving descent control device
CN108612620A (en) * 2018-06-19 2018-10-02 佛山市顺德区中意液压有限公司 A kind of compact high efficient oil distribution mechanism for radial plunger type motor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101793249A (en) * 2008-12-09 2010-08-04 罗伯特·博世有限公司 Gear pump
CN102022319A (en) * 2010-12-02 2011-04-20 湖南机油泵股份有限公司 Oil pump with inside engaged gear
CN103291609A (en) * 2012-02-24 2013-09-11 常州大学 Biaxial harmonic gear pump
CN103291609B (en) * 2012-02-24 2016-01-20 常州大学 Biaxial harmonic gear pump
CN102588271A (en) * 2012-03-06 2012-07-18 佛山市顺德区中意液压有限公司 Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof
CN102588271B (en) * 2012-03-06 2014-12-31 佛山市顺德区中意液压有限公司 Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof
CN106943682A (en) * 2017-04-07 2017-07-14 南京信息职业技术学院 A kind of hydraulic pump type damps reciprocal lifesaving descent control device
CN108612620A (en) * 2018-06-19 2018-10-02 佛山市顺德区中意液压有限公司 A kind of compact high efficient oil distribution mechanism for radial plunger type motor
CN108612620B (en) * 2018-06-19 2023-11-03 佛山市顺德区中意液压有限公司 Compact efficient oil distribution mechanism for radial plunger hydraulic motor

Similar Documents

Publication Publication Date Title
CN2900865Y (en) Inside engaged gear pump
US20120141315A1 (en) External Gear Pump
EP2837827B1 (en) Hydraulic device
CN203161524U (en) Internal gear pump
CN101566149A (en) Master-auxiliary vane pump and stator decompression method
JP2013221479A (en) Oil pump
EP1515045A3 (en) Gear motor with start up control
JPH10205458A (en) Inscribed gear pump
CN201176930Y (en) Gear ring pump
CN201661461U (en) Inner gearing oil pump for constant-direction oil supply
CN101265898A (en) Planet cyclic gear train type polygonal rotor pump
CN201582111U (en) Triple low-pressure gear pump
CN201206544Y (en) Polygon rotor pump of planet epicyclic train
CN201162670Y (en) Dual idler gear pump
CN202926611U (en) Oblique tooth gear oil pump suitable for automobile steering system
CN113250951A (en) Hydraulic drive gear pump and application method thereof
CN202833121U (en) Circular gear pump
CN214366698U (en) Axial floating compensation side plate for bidirectional gear pump
CN217712944U (en) Double-screw air compressor
CN203098269U (en) Gear hydraulic pump
CN215672689U (en) Gear pump
CN111486089A (en) High-pressure cycloid internal gear pump
CN220267945U (en) Special ceramic gear pump
CN211777984U (en) Structure for improving suction performance of gear pump inlet
CN216131079U (en) Three-five-tooth vehicle-mounted compressor

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070516

Termination date: 20100331