CN102619746A - Internal gear pump - Google Patents
Internal gear pump Download PDFInfo
- Publication number
- CN102619746A CN102619746A CN2012100486190A CN201210048619A CN102619746A CN 102619746 A CN102619746 A CN 102619746A CN 2012100486190 A CN2012100486190 A CN 2012100486190A CN 201210048619 A CN201210048619 A CN 201210048619A CN 102619746 A CN102619746 A CN 102619746A
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- gear
- cover plate
- swing link
- ring gear
- ring
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Abstract
The invention discloses an internal gear pump, which comprises a casing, a gear shaft, an internal gear ring and crescent plates. The internal gear pump is characterized by further comprising an axial automatic floating compensation device and two radial automatic floating compensation devices. The axial automatic floating compensation device is formed by valve plates (24 and 14) arranged on two lateral faces of the internal gear ring (17), special-shaped seal rings (11 and 12) and special-shaped grooves on a left internal cover plate (25) and a right internal cover plate (7). One of the two radial automatic floating compensation devices is formed by an oil outlet groove (31), the internal gear ring (17) and a high-pressure cavity (32), and the other radial automatic floating compensation device is formed by an internal crescent plate (19), an external crescent plate (20), a special-shaped location pin (21), a spring sheet (22) and a sealing strip (23). By means of the structure, the internal gear pump has the advantages of being simple in structure, excellent in abrasion resistance, high in pressure, small in noise, long in service life and the like.
Description
Technical field
The present invention relates to a kind of gear pump, be meant a kind of crescent gear pump especially.
Background technique
The crescent gear pump of existing technology; Though structure and of a great variety; But representative crescent gear pump, it comprises the pump housing that has filler opening, oil outlet and inner chamber, be sleeved on the ring gear that freely rotates in the pump housing inner chamber, with the small gear of ring gear engagement; The top of ring gear does not radially pass in and out oilhole; Setovering mutually in the center of ring gear and small gear center, between the top circle cambered surface of small gear and ring gear, does not have moon block teeth, are provided with the axial float compensation device in the bi-side of small gear and ring gear engagement.The crescent gear pump that has also is provided with the composite bush that is positioned at pump housing inner chamber outside ring gear.
The employing that above-mentioned crescent gear pump has the axial float compensation device, the employing that has the radial floating compensation device, have axially with radially all adopt the floating compensation device.
Above-mentioned crescent gear pump, in order to solve ring gear outer surface and the pump housing internal surface wear problem when high pressure oil is worked, the employing that has outside ring gear, be provided with the composite bush that is positioned at pump housing inner chamber.
Yet crescent gear pump in the existing technology, ubiquity ring gear outer surface contact the wear problem between wearing and tearing and ring gear, small gear and month block teeth between the internal surface with the pump housing, cause pressure transient or decline.Though the design proposal that has is in order to solve above-mentioned wear problem, complex structure, manufacturability is poor, and manufacture cost strengthens.
Summary of the invention
The technical problem that the present invention will solve provides a kind of crescent gear pump; It contains an axially automatic floating compensation device; Two radially automatic floating compensation devices reach following purpose: 1, realize the automatic floating compensation after the ring gear both ends of the surface are worn and torn simultaneously; 2, realize the automatic floating compensation after the wearing and tearing between ring gear, gear and month block teeth; 3, realize the automatic floating compensation after the wearing and tearing between ring gear outer surface and the pump housing internal surface; 4, when running up, realize generation oil film between ring gear and the pump housing surface of contact and improve lubrication effect; 5, realize that the working pressure that produces between ring gear and the pump housing surface of contact reaches minimum value.That a kind of crescent gear pump provided by the invention has is simple in structure, wear-resisting property is superior, pressure is high, noise is little and characteristics such as long service life.
For solving the problems of the technologies described above, a kind of crescent gear pump provided by the invention, it contains housing, gear shaft, ring gear, swing link, also contains axially floating compensation device and two floating compensation devices automatically radially automatically.Described housing is the integral body that the pump housing, left inner cover plate, left outer cover plate and right inner cover plate, right outer cover plate is connected into by stud bolt; Left and right inner cover plate internal surface is respectively equipped with composite sliding bearing, and right outer cover plate endoporus is provided with check ring, packing ring, outside framework oil seal; Described gear shaft is provided with left axle journal, gear, right axle journal; Left side axle journal is installed on left thrust plate and composite sliding bearing internal surface; Setover mutually in gear and ring gear engagement and center, right axle journal is installed on composite sliding bearing and spring flange, packing ring, outside framework oil seal internal surface and stretches out right outer cover plate; Described ring gear is arranged on pump housing internal surface and freely rotates, and with gear shaft on gear engagement; Described swing link contain be supported on the special-shaped locating stud in swing link and outer swing link, under the effect of spring sheet power, the cylindrical of the internal surface of swing link and gear fits tightly and the outer surface of outer swing link and the interior circle of ring gear fit tightly in making; Described axially automatic floating compensation device is made up of the profiled slot on thrust plate, fixing ring, a left side and the right inner cover plate of ring gear bi-side; Described two radially automatic floating compensation devices: one of which, form by oil outlet groove, ring gear, hyperbaric chamber; Its two, form by interior swing link, outer swing link, special-shaped locating stud, spring sheet, Stamping Steel Ribbon.
The described pump housing, the area of the oil outlet that the filler opening that last end face is provided with, its area are provided with greater than left surface, the surface of internal cavity that connects with oil outlet is provided with the oil outlet groove, and the C projection plane area of this groove is a * b.
Described hyperbaric chamber is made up of gear, ring gear, inside and outside swing link, special-shaped locating stud, left and right sides thrust plate, and the D of hyperbaric chamber is made as c * d to the projection plane area.
Described projection plane area is provided with difference in areas between the two, promptly hyperbaric chamber D to projection plane area c * d be slightly larger than oil outlet groove C to projection plane area a * b.
Described ring gear 17, its outer annulus edge are provided with the turnover oilhole 39 that is uniformly distributed with 1-2 row central position and radial offset α angle.
Described left and right sides thrust plate and be provided with oil through also is provided with the eyebrow groove 35 that is communicated with oil through on the right thrust plate.
Description of drawings
Fig. 1 is the structural representation of a kind of crescent gear pump of the present invention;
Fig. 2 is the B-B sectional view of Fig. 1;
Fig. 3 is the schematic representation of left thrust plate;
Fig. 4 is the section signal of the pump housing;
Fig. 5 is that the C of oil outlet groove is to the projection plane view;
Fig. 6 is the structural representation of gear, ring gear, inside and outside swing link, special-shaped locating stud;
Fig. 7 is that the D of Fig. 6 hyperbaric chamber is to the projection plane view.
Among the above-mentioned figure, 1. right outer cover plate, 2. outside framework oil seal, 3. check ring, 4. packing ring, 5. stud bolt, 6. locating stud; 7. right inner cover plate, 8. composite sliding bearing, 9. seal ring, 10. seal ring, 11. right fixing rings, 12. left fixing rings, 13. fixing rings; 14. right thrust plate, 15. pump housings, 16. gear shafts, 17. ring gears, 18. swing link locating studs, 19. interior swing links, 20. outer swing links; 21. special-shaped locating stud, 22. spring sheets, 23. Stamping Steel Ribbons, 24. left thrust plates, 25. left inner cover plate, 26. left outer cover plates, 27. hexagon nuts; 28. keyway, 29. filler openings, 30. oil outlets, 31. oil outlet grooves, 32. hyperbaric chambers, 33. low pressure chamber; 34. oil through, 35. eyebrow grooves, 36. oil outlet groove projection planes, the projection plane of 37. hyperbaric chambers, 38. gears, 39. turnover oilholes.
Embodiment
Among the above-mentioned figure, a kind of crescent gear pump, it contains housing, gear shaft, ring gear, swing link, and it also contains an axially automatic floating compensation device and two radially automatic floating compensation devices.Described housing is the integral body that the pump housing 15, left inner cover plate 25, left outer cover plate 26 and right inner cover plate 7, right outer cover plate 1 is connected into by stud bolt 5; Left and right inner cover plate internal surface is respectively equipped with composite sliding bearing 8, and right outer cover plate 1 endoporus is provided with check ring 3, packing ring 4, outside framework oil seal 2; Described gear shaft 16 is provided with left axle journal, gear 38 and right axle journal; Left side axle journal is installed on left thrust plate 24 and composite sliding bearing internal surface; Gear 38 is setovered mutually with ring gear 17 engagements and center, and right axle journal is installed on composite sliding bearing 8 and spring flange 3, packing ring 4 and outside framework oil seal 2 internal surfaces and stretches out right outer cover plate 1; Described ring gear 17 is arranged on pump housing internal surface and freely rotates, and with gear shaft on gear 38 engagement; Described swing link contain be supported on the special-shaped locating stud 21 in swing link 19 and outer swing link 20; Under the effect of spring sheet 22 power, the cylindrical of the internal surface of swing link 19 and gear 38 fits tightly with the outer surface of outer swing link 20 and the interior circle of ring gear 17 and fits tightly in making; Described axially automatic floating compensation device is made up of the profiled slot on thrust plate 24 and 14, fixing ring 11 and 12, a left side and right inner cover plate 25 and 7 of ring gear 17 bi-side; Described two radially automatic floating compensation devices: one of which, form by oil outlet groove 31, ring gear 17, hyperbaric chamber 32; Its two, form by interior swing link 19, outer swing link 20, special-shaped locating stud 21, spring sheet 22, Stamping Steel Ribbon 23.
Above-mentioned one axially automatically floating compensation be achieved in that when the thrust plate 24 of high pressure oil through the ring gear bi-side with 14 oilhole 34 inflows during the profiled slot on left and right inner cover plate 25 and 7; Pressure oil acts on a left side and right inner cover plate 25 and 7; The opposite force of pressure oil acts on thrust plate 24 and 14, makes thrust plate 24 and 14 be close to the ring gear bi-side all the time.
Two above-mentioned radially automatic floating compensation are achieved in that one of which; Pressure oils in the hyperbaric chamber 32 radially act on gear 38, ring gear 17, inside and outside swing link 19 and 20 and the pump housing 15 simultaneously; When oil outlet groove 36C on the pump housing 15 to projection plane area a * b be slightly less than hyperbaric chamber 32D to projection plane area c * d the time, make ring gear 17 be close to the pump housing 15 internal surfaces all the time; They are two years old; Pressure oil in the hyperbaric chamber 32 radially acts on gear 38, ring gear 17, inside and outside swing link 19 and 20 simultaneously; In pressure oil acts on swing link 19 and outside during surperficial between the swing link 20; The internal surface of swing link 19 is close to the cylindrical of gear 38 all the time in making, the outer surface of outer swing link 20 is close to the interior circle of ring gear 17 all the time.
The described pump housing 15, the area of the oil outlet 30 that the filler opening 29 that last end face is provided with, its area are provided with greater than left surface, the surface of internal cavity that connects with oil outlet 30 is provided with oil outlet groove 36, and the C of this groove is a * b to the projection plane area.
Described hyperbaric chamber 32 is made up of gear 38, ring gear 17, inside and outside swing link 19 and 20, special-shaped locating stud, left and right sides thrust plate 24 and 14, hyperbaric chamber 32D to the projection plane area be made as c * d.
Described oil outlet groove 36, with its C to projection plane area a * b be designed to be slightly less than hyperbaric chamber 32D to projection plane area c * d.
Described ring gear 17, its outer annulus edge are provided with the turnover oilhole 39 that is uniformly distributed with 1-2 row central position and radial offset α angle.The one, guarantee radially to pass in and out that oil is not interrupted has enough flows; The 2nd, guarantee to pass in and out on the unidirectional flank of tooth that oilhole 39 is located at ring gear.
Described left and right sides thrust plate 24 and 14 is provided with oil through 34, also is provided with the eyebrow groove 35 that is communicated with oil through 34 on the right thrust plate 14.When the end face of ring gear 17 passed through eyebrow groove 35, high pressure oil flowed into oil throughs 34 through eyebrow groove 35, reaches the effect that reduces noise.
Because above-mentioned crescent gear pump adopted three automatic floating compensation devices, therefore compared with prior art, have simple in structure, wear-resisting property is superior, pressure is high, noise is little and characteristics such as long service life.
Claims (6)
1. crescent gear pump, it contains housing, gear shaft, ring gear, swing link, it is characterized in that: also contain axially automatically radially floating compensation devices automatically of floating compensation device and two.Described housing is the integral body that the pump housing (15), left inner cover plate (25), left outer cover plate (26), right inner cover plate (7), right outer cover plate (1) is connected into by stud bolt (5); Internal surface left and right inner cover plate is respectively equipped with composite sliding bearing (8), and the endoporus of right outer cover plate (1) is provided with check ring (3), packing ring (4) and outside framework oil seal (2); Described gear shaft (16) is provided with left axle journal, gear (38) and right axle journal; Left side axle journal is installed on the internal surface of left thrust plate (24) and composite sliding bearing; Gear (38) is setovered mutually with ring gear (17) engagement and center, and right axle journal is installed on composite sliding bearing (8) and spring flange (3), packing ring (4) and outside framework oil seal (2) internal surface and stretches out right outer cover plate (1); Described ring gear (17) is arranged on pump housing internal surface and freely rotates, and with gear shaft on gear (38) engagement; Described swing link contain be supported on special-shaped locating stud (21) go up in swing link (19) and outer swing link (20); Under the effect of spring sheet (22) power; The internal surface of swing link (19) and the cylindrical of gear (38) fit tightly in making, make the outer surface of outer swing link (20) and the interior circle of ring gear (17) fit tightly; Described axially automatic floating compensation device is made up of the thrust plate (24) of ring gear (17) bi-side and the profiled slot on (14), fixing ring (11) and (12), a left side and right inner cover plate (25) and (7); Described two radially automatic floating compensation devices: one of which, form by oil outlet groove (31), ring gear (17), hyperbaric chamber (32); Its two, form by interior swing link (19), outer swing link (20), special-shaped locating stud (21), spring sheet (22), Stamping Steel Ribbon (23).
2. a kind of crescent gear pump according to claim 1; It is characterized in that: the described pump housing (15); The area of the oil outlet (30) that its area of the filler opening that its end face is provided with (29) is provided with greater than left surface; The surface of internal cavity that connects with oil outlet (30) is provided with oil outlet groove (36), this groove C to the projection plane area be a * b.
3. a kind of crescent gear pump according to claim 1; It is characterized in that: described hyperbaric chamber (32); Form by gear (38), ring gear (17), inside and outside swing link (19) and (20), special-shaped locating stud (21), left and right sides thrust plate (24) and (14), hyperbaric chamber (32) D to the projection plane area be c * d.
4. according to the described a kind of crescent gear pump of claim 1-3, it is characterized in that: described oil outlet groove (36), its C to projection plane area a * b be designed to be slightly less than hyperbaric chamber (32) D to projection plane area c * d.
5. a kind of crescent gear pump according to claim 1 is characterized in that: described ring gear (17), its outer annulus edge are provided with the turnover oilhole (39) that is uniformly distributed with 1-2 row central position and radial offset α angle.
6. a kind of crescent gear pump according to claim 1 is characterized in that: described left and right sides thrust plate (24) and (14) are provided with oil through (34), also are provided with the eyebrow groove (35) that is communicated with oil through on the right thrust plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100486190A CN102619746A (en) | 2012-02-29 | 2012-02-29 | Internal gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100486190A CN102619746A (en) | 2012-02-29 | 2012-02-29 | Internal gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102619746A true CN102619746A (en) | 2012-08-01 |
Family
ID=46559882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100486190A Pending CN102619746A (en) | 2012-02-29 | 2012-02-29 | Internal gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102619746A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695701A (en) * | 2013-12-17 | 2014-04-02 | 宁波华液机器制造有限公司 | Crescent block assembly of gear-within-gear pump and preparation method thereof |
| CN103883516A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal-meshing gear pump |
| CN103883517A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal gear pump structure |
| CN103883515A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Internal meshing gear pump |
| CN103939333A (en) * | 2014-04-25 | 2014-07-23 | 福州大学 | Internally meshed gear pump with radial compensation |
| CN105563049A (en) * | 2016-03-21 | 2016-05-11 | 羊丁 | Processing process for small crescent block of inner meshing gear pump |
| CN107420034A (en) * | 2017-07-31 | 2017-12-01 | 桂林航天工业学院 | A kind of multiple degrees of freedom hydraulic pressure drill boom |
| CN107614876A (en) * | 2015-05-18 | 2018-01-19 | 株式会社Tbk | Gear pump |
| CN109340102A (en) * | 2018-12-03 | 2019-02-15 | 湖北海蓝装备科技有限公司 | High pressure crescent gear pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472123A (en) * | 1979-10-19 | 1984-09-18 | Messrs. Otto Eckerle Gmbh & Co. Kg | Internal gear machine with segmented filler members |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal meshed gear pump |
| CN1185403C (en) * | 1999-12-08 | 2005-01-19 | 卢克摩擦片和离合器有限公司 | Gear mechanism |
| CN202732332U (en) * | 2012-02-29 | 2013-02-13 | 盐城市驰英机械科技有限公司 | Internal engagement gear pump |
-
2012
- 2012-02-29 CN CN2012100486190A patent/CN102619746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472123A (en) * | 1979-10-19 | 1984-09-18 | Messrs. Otto Eckerle Gmbh & Co. Kg | Internal gear machine with segmented filler members |
| CN1185403C (en) * | 1999-12-08 | 2005-01-19 | 卢克摩擦片和离合器有限公司 | Gear mechanism |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal meshed gear pump |
| CN202732332U (en) * | 2012-02-29 | 2013-02-13 | 盐城市驰英机械科技有限公司 | Internal engagement gear pump |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695701A (en) * | 2013-12-17 | 2014-04-02 | 宁波华液机器制造有限公司 | Crescent block assembly of gear-within-gear pump and preparation method thereof |
| CN103695701B (en) * | 2013-12-17 | 2016-04-13 | 宁波华液机器制造有限公司 | A kind of crescent moon block assembly for crescent gear pump and preparation method thereof |
| CN103883516A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal-meshing gear pump |
| CN103883517A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Fixed-displacement internal gear pump structure |
| CN103883515A (en) * | 2014-02-24 | 2014-06-25 | 江苏驰翔精密齿轮有限公司 | Internal meshing gear pump |
| CN103939333A (en) * | 2014-04-25 | 2014-07-23 | 福州大学 | Internally meshed gear pump with radial compensation |
| CN107614876A (en) * | 2015-05-18 | 2018-01-19 | 株式会社Tbk | Gear pump |
| CN105563049A (en) * | 2016-03-21 | 2016-05-11 | 羊丁 | Processing process for small crescent block of inner meshing gear pump |
| CN107420034A (en) * | 2017-07-31 | 2017-12-01 | 桂林航天工业学院 | A kind of multiple degrees of freedom hydraulic pressure drill boom |
| CN109340102A (en) * | 2018-12-03 | 2019-02-15 | 湖北海蓝装备科技有限公司 | High pressure crescent gear pump |
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| PB01 | Publication | ||
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Application publication date: 20120801 |