CN104088784A - Internally meshed variable gear pump - Google Patents
Internally meshed variable gear pump Download PDFInfo
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- CN104088784A CN104088784A CN201410320674.XA CN201410320674A CN104088784A CN 104088784 A CN104088784 A CN 104088784A CN 201410320674 A CN201410320674 A CN 201410320674A CN 104088784 A CN104088784 A CN 104088784A
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- gear
- gear ring
- small gear
- engagement
- ring
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Abstract
The invention discloses an internally meshed variable gear pump, which comprises a shell, a left end cover and a right end cover, wherein an oil suction opening and an oil supply opening are formed in the shell; a small gear is arranged in the shell; a gear ring is arranged outside the small gear; left and right guide sleeves are arranged in the shell and are combined as a whole through multiple screws; the guide sleeves are supported and guided by outer cylindrical surfaces protruding from the left and right end covers and are capable of driving the gear ring to move axially along the small gear along the cylindrical surface; a spring is arranged between the right end cover and a right guide sleeve; multiple push and press type plungers are arranged between the left end cover and a left guide sleeve. The internally meshed variable gear pump is reasonable in structure, low in operating noise, small in pressure fluctuation and high in operation efficiency.
Description
Technical field
The present invention relates to a kind of interior engagement gear pump with variable capacity.
Background technique
Existing gear pump, complex structure, service behaviour is undesirable, has the defects such as noise is large, pressure surge is large, operational efficiency is low.
Summary of the invention
The object of the present invention is to provide one rational in infrastructure, the interior engagement gear pump with variable capacity that noise is little, pressure surge is little, operational efficiency is high.
Technical solution of the present invention is:
Engagement gear pump with variable capacity in a kind of, comprise housing, left end cap, right end cap, housing is provided with inlet port, send hydraulic fluid port, it is characterized in that: small gear is set in housing, the axle of small gear is bearing on sliding bearing, and rotated by motivational drive, small gear arranges gear ring outward, inside and outside sealing block is installed in the space between gear ring and small gear, in gap between inside and outside sealing block, there is spring sheet to strut, in this gap, there is the pressure oil of introducing, interior sealing block is pressed on small gear, external sealed piece is pressed on gear ring endoporus; Arranged on left and right sides at small gear is respectively equipped with left and right side plate, the close enclosed space forming between small gear, inside and outside sealing block and left and right side plate, i.e. hyperbaric chamber; In the time that small gear rotates, gear ring engagement rotation, exits engagement place at the gear teeth, and swept volume increases, form vacuum, from inlet port inhalant liquid force feed, enter engagement place at the gear teeth, swept volume reduces, and hydraulic oil is gone out by gear ring bottom outlet is squeezed, through sending hydraulic fluid port to be sent to hydraulic system; In enclosure interior, be provided with left and right guide sleeve, both join together with several screws, protrude Wai garden cylinder supporting guiding by left and right end cap, and can drive gear ring to move axially along small gear along cylndrical surface, thus both engagement width are changed, realize the requirement of variable; Between right end cap and right guide sleeve, be provided with spring, it promotes right guide sleeve, gear ring to left movement; Between left end cap and left guide sleeve, be provided with several pushing plungers, after incoming pressure oil, can produce spring force balance with spring, thereby determine two gear engagement width sizes.
In gear ring, the right side of small gear is equipped with a sealing external gear, it all engages with all teeth of gear ring, and can be in axial sliding by relative gear ring.
Left sideboard is provided with S connected in star, and S V-shaped ring is wherein housed, and by aperture, outlet pressure oil is introduced to groove, and S connected in star is corresponding with pump zone of high pressure tightening seal.
On right sideboard, establish C connected in star, be inside placed with C shape seal ring, introduce high pressure oil by aperture, the impacting force that C shape groove produces is pressed on right sideboard on the end face of sealing gear.
Gear ring has circular groove on the right side, and communicates with high pressure oil by groove.
The present invention is rational in infrastructure, and pump operation noise is low, pressure surge is little, operational efficiency is high.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the B-B sectional view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Embodiment
Engagement gear pump with variable capacity in a kind of, comprise housing 3, left end cap 1, right end cap 9, housing is provided with inlet port (S mouth), send hydraulic fluid port (P mouth), small gear 6 is set in housing, the axle of small gear is bearing on sliding bearing, and rotated by motivational drive, small gear arranges gear ring 4 outward, in being provided with in space between gear ring and small gear, external sealed piece 13, 14, in, in gap between external sealed piece, there is spring sheet to strut, in this gap, there is the pressure oil of introducing, interior sealing block is pressed on small gear, external sealed piece is pressed on gear ring endoporus, can play seal action, and can compensate for wear.Be respectively equipped with left and right side plate 5,10 in the arranged on left and right sides of small gear, the close enclosed space forming between small gear, inside and outside sealing block and left and right side plate, i.e. hyperbaric chamber; In the time that small gear rotates, gear ring engagement rotation, exits engagement place at the gear teeth, and swept volume increases, form vacuum, from inlet port inhalant liquid force feed, enter engagement place at the gear teeth, swept volume reduces, and hydraulic oil is gone out by gear ring bottom outlet is squeezed, through sending hydraulic fluid port to be sent to hydraulic system; Oil-absorbing process and force feed process are carried out continuously in gear rotary course, thereby just can constantly export high pressure oil.In enclosure interior, be provided with left and right guide sleeve 2,7, both join together with several screws 15, protrude Wai garden cylinder supporting guiding by left and right end cap, and can drive gear ring to move axially along small gear along cylndrical surface, thereby both engagement width are changed, realize the requirement of variable; Between right end cap and right guide sleeve, be provided with spring 8, it promotes right guide sleeve, gear ring to left movement; Between left end cap and left guide sleeve, be provided with several pushing plungers 11, after incoming pressure oil, can produce spring force balance with spring, thereby determine two gear engagement width sizes, input oil pressure is larger, engagement width less (discharge capacity is less), otherwise engagement width larger (discharge capacity is larger).Convert and can realize permanent power, constant voltage, constant flow, manual variable various ways by appropriate configuration.
Axial seal structure processing: for ensureing between right sideboard 10, small gear 6, gear ring 4, in variable process, there is not space, ensure excellent sealing, in gear ring 4, (small gear right side) installs a sealing external gear 12, it all engages with all teeth of gear ring 4, and can be in axial sliding with the relative gear ring 4 in minimum gap.Right sideboard 10 pushing sealing external gears 12, push small gear 6 right sides then like this, complete end face and radial seal effect.
End force collocation structure processing: left sideboard 5 is in small gear 6 left sides, on side plate, there is S connected in star 16, S V-shaped ring is wherein housed, by aperture, outlet pressure oil is introduced to groove, S connected in star is corresponding with pump zone of high pressure tightening seal, and its impacting force that forms should be slightly larger than the power that struts that flank zone of high pressure produces, and ensures that both are concentric, to ensure compensate for wear, maintain rational gap.
On right sideboard 10, have C connected in star 17, be inside placed with C shape seal ring, introduce high pressure oil by aperture, the impacting force that C shape groove produces is pressed on right sideboard 10 on the end face of sealing gear 12, keeps good end face seal.
Gear ring has circular groove on 4 right sides, communicates with high pressure oil by groove.Conventionally, gear ring 4 pressure at both sides distribute different, gear ring can be pressed to the right, are same as oil pressure in annular groove and produce pressure, make gear ring two side clearance equilibriums, also improve lubricating condition simultaneously.
Claims (5)
1. engage gear pump with variable capacity in one kind, comprise housing, left end cap, right end cap, housing is provided with inlet port, send hydraulic fluid port, it is characterized in that: small gear is set in housing, the axle of small gear is bearing on sliding bearing, and rotated by motivational drive, small gear arranges gear ring outward, inside and outside sealing block is installed in the space between gear ring and small gear, in gap between inside and outside sealing block, there is spring sheet to strut, in this gap, there is the pressure oil of introducing, interior sealing block is pressed on small gear, external sealed piece is pressed on gear ring endoporus; Arranged on left and right sides at small gear is respectively equipped with left and right side plate, the close enclosed space forming between small gear, inside and outside sealing block and left and right side plate, i.e. hyperbaric chamber; In the time that small gear rotates, gear ring engagement rotation, exit engagement place at the gear teeth, swept volume increases, and forms vacuum, from inlet port inhalant liquid force feed, enter engagement place at the gear teeth, swept volume reduces, and hydraulic oil is gone out by gear ring bottom outlet is squeezed, through sending hydraulic fluid port to be sent to hydraulic system, oil-absorbing process and force feed process are to carry out continuously in gear rotary course; In enclosure interior, be provided with left and right guide sleeve, both join together with several screws, protrude Wai garden cylinder supporting guiding by left and right end cap, and can drive gear ring to move axially along small gear along cylndrical surface, thus both engagement width are changed, realize the requirement of variable; Between right end cap and right guide sleeve, be provided with spring, it promotes right guide sleeve, gear ring to left movement; Between left end cap and left guide sleeve, be provided with several pushing plungers, after incoming pressure oil, can produce spring force balance with spring, thereby determine two gear engagement width sizes.
2. interior engagement gear pump with variable capacity according to claim 1, is characterized in that: in gear ring, the right side of small gear is equipped with a sealing external gear, it all engages with all teeth of gear ring, and can be in axial sliding by relative gear ring.
3. interior engagement gear pump with variable capacity according to claim 1 and 2, is characterized in that: left sideboard is provided with S connected in star, and S V-shaped ring is wherein housed, and by aperture, outlet pressure oil is introduced to groove, and S connected in star is corresponding with pump zone of high pressure tightening seal.
4. interior engagement gear pump with variable capacity according to claim 1 and 2, is characterized in that: on right sideboard, establish C connected in star, be inside placed with C shape seal ring, introduce high pressure oil by aperture, the impacting force that C shape groove produces is pressed on right sideboard on the end face of sealing gear.
5. interior engagement gear pump with variable capacity according to claim 1 and 2, is characterized in that: gear ring has circular groove on the right side, and communicates with high pressure oil by groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410320674.XA CN104088784B (en) | 2014-07-08 | Internal messing gear pump with variable capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410320674.XA CN104088784B (en) | 2014-07-08 | Internal messing gear pump with variable capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104088784A true CN104088784A (en) | 2014-10-08 |
| CN104088784B CN104088784B (en) | 2016-11-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454511A (en) * | 2014-11-13 | 2015-03-25 | 福州大学 | Internally-engaged gear pump applicable to high pressure and large flow |
| CN105041637A (en) * | 2015-06-26 | 2015-11-11 | 湘潭大学 | Variable-displacement cycloid rotor pump |
| CN105840490A (en) * | 2016-03-19 | 2016-08-10 | 刘凡 | Inner-gearing variable gear pump |
| CN110360097A (en) * | 2019-08-31 | 2019-10-22 | 段井胜 | A kind of gear pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076496B (en) * | 1956-09-25 | 1960-02-25 | Zahnradfabrik Friedrichshafen | Adjustable rotary piston machine with two eccentrically mounted, internally rotating toothed wheels |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| CN101476559A (en) * | 2008-12-10 | 2009-07-08 | 富奥汽车零部件股份有限公司 | Variable displacement pump |
| JP2010001762A (en) * | 2008-06-18 | 2010-01-07 | Aisin Seiki Co Ltd | Variable displacement pump |
| CN102395791A (en) * | 2009-04-15 | 2012-03-28 | Vhit公司 | Variable capacity fluidic machine |
| CN204082528U (en) * | 2014-07-08 | 2015-01-07 | 南通恒好液压科技有限公司 | Novel internal messing gear pump with variable capacity |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1076496B (en) * | 1956-09-25 | 1960-02-25 | Zahnradfabrik Friedrichshafen | Adjustable rotary piston machine with two eccentrically mounted, internally rotating toothed wheels |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| JP2010001762A (en) * | 2008-06-18 | 2010-01-07 | Aisin Seiki Co Ltd | Variable displacement pump |
| CN101476559A (en) * | 2008-12-10 | 2009-07-08 | 富奥汽车零部件股份有限公司 | Variable displacement pump |
| CN102395791A (en) * | 2009-04-15 | 2012-03-28 | Vhit公司 | Variable capacity fluidic machine |
| CN204082528U (en) * | 2014-07-08 | 2015-01-07 | 南通恒好液压科技有限公司 | Novel internal messing gear pump with variable capacity |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454511A (en) * | 2014-11-13 | 2015-03-25 | 福州大学 | Internally-engaged gear pump applicable to high pressure and large flow |
| CN104454511B (en) * | 2014-11-13 | 2016-09-07 | 福州大学 | A kind of crescent gear pump being applicable to high-pressure high-flow |
| CN105041637A (en) * | 2015-06-26 | 2015-11-11 | 湘潭大学 | Variable-displacement cycloid rotor pump |
| CN105840490A (en) * | 2016-03-19 | 2016-08-10 | 刘凡 | Inner-gearing variable gear pump |
| CN105840490B (en) * | 2016-03-19 | 2018-06-22 | 江苏盛安资源股份有限公司 | A kind of internal messing gear pump with variable capacity |
| CN110360097A (en) * | 2019-08-31 | 2019-10-22 | 段井胜 | A kind of gear pump |
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