CN103883517A - Fixed-displacement internal gear pump structure - Google Patents
Fixed-displacement internal gear pump structure Download PDFInfo
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- CN103883517A CN103883517A CN201410061003.6A CN201410061003A CN103883517A CN 103883517 A CN103883517 A CN 103883517A CN 201410061003 A CN201410061003 A CN 201410061003A CN 103883517 A CN103883517 A CN 103883517A
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- cover plate
- plate
- ring gear
- oil
- gear
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- Rotary Pumps (AREA)
Abstract
The invention discloses a fixed-displacement internal gear pump structure with a good sealing effect. The fixed-displacement internal gear pump structure comprises a pump body, and an oil inlet and an oil outlet which are formed in the pump body, wherein an inner gear ring is rotatably arranged inside the pump body, a low-pressure cavity is communicated with the oil outlet through the oil inlet in the inner gear ring, a left distribution disc is arranged between the inner gear ring and a left inner cover plate, a right distribution disc is arranged between the inner gear ring and a right inner cover plate, a circular sealing compensation oil inlet and a head sharp sealing compensating oil outlet are formed in the right distribution disc, an oil returning cavity communicated with the circular sealing compensation oil inlet and the head sharp sealing compensating oil outlet is formed in the right inner cover plate at the right end of the right distribution disc, and a sealing ring is arranged on the edge of the oil returning cavity between the right distribution disc and the right inner cover plate.
Description
Technical field
The present invention relates to a kind of gear pump, relate in particular to a kind of fixed displacement inside engaged gear pump structure.
Background technique
Gear pump is for delivery of the larger liquid of viscosity, as lubricant oil and combustion oil, should not carry the liquid that viscosity is lower (such as water and gasoline etc.), should not carry the liquid (affecting the working life of pump) that contains granule foreign, can be used as lubrication system oil pump and hydraulic system oil pump, be widely used in motor, steam turbine, centrifugal compressor, lathe and other equipment, the processing technology of gear pump requires to cry high, is difficult for obtaining accurate coupling.Gear pump can be divided into external gear pump and internal gear pump, and in the situation that head pressure is identical with flow, the boundary dimension of internal gear pump is little compared with external gear pump.Two gear shape differences of internal gear pump, the number of teeth is also different, and one of them is annular gear wheel, can in the pump housing, float, middle one is driving gear, becomes eccentric position with the pump housing, driving gear drives annular gear wheel to rotate together, utilizes the variation of two interdental spaces to carry liquid.Also have a kind of internal gear pump that a fixing arc-shaped partition is housed between two gears, sucking and venting space has obviously been separated.Existing crescent gear pump, the wear problem between the outer surface of ubiquity driving gear and annular gear wheel internal surface, the pressure of pump body is also unstable simultaneously.Although some design proposals are in order to solve above-mentioned wear problem, complex structure, manufacturability is poor, and manufacture cost strengthens.
Summary of the invention
Technical problem to be solved by this invention is: the fixed displacement inside engaged gear pump structure that a kind of good sealing effect is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: fixed displacement inside engaged gear pump structure, comprise: the pump housing, be arranged on filler opening and oil outlet on the pump housing, be arranged on left inside cover plate and the left outside cover plate in pump housing left side, be arranged on right inside cover plate and the right outside cover plate on pump housing right side, the described pump housing, left inside cover plate, left outside cover plate, right inside cover plate is fixedly connected with nut by fixing bolt with right outside cover plate, inner rotation at the described pump housing is provided with ring gear, inside at described ring gear is provided with rotating shaft, in rotating shaft, be provided with internal gear, described internal gear departs from mutually mutually with a side inwall center of engaging of ring gear, between described rotating shaft and described left inside cover plate and right inside cover plate, be provided with sliding bearing, between described rotating shaft and described left outside cover plate, be provided with reinforced seal, between the described pump housing and the right inside cover plate on left inside cover plate and right side, be respectively arranged with seal ring, on described ring gear inwall, be evenly provided with some teeth groove that cooperatively interact with internal gear, around the gear ring of described ring gear, be evenly provided with the oil inlet hole that some teeth groove are interconnected, between described ring gear inwall and internal gear, outer arcuate limiting board is set, arc limiting board and positioning plate, the two ends of described positioning plate are fixed on left inside cover plate and right inside cover plate by mounting hole respectively, there are two mounting grooves in the arranged outside of described arc limiting board, in mounting groove between described outer arcuate limiting board and arc limiting board, be provided with Stamping Steel Ribbon and spring sheet, under the effect of spring sheet power, the internal surface of arc limiting board and internal gear fit tightly, outer surface and the ring gear of outer arcuate limiting board fit tightly, described outer arcuate limiting board, arc limiting board will be divided into hyperbaric chamber and low-pressure cavity between ring gear inwall and internal gear, described hyperbaric chamber is connected with described filler opening by oil inlet hole on ring gear, described low-pressure cavity is connected with described oil outlet by oil inlet hole on ring gear, it is characterized in that: between described ring gear and left inside cover plate, be provided with left thrust plate, between described ring gear and right inside cover plate, be provided with right thrust plate, described right thrust plate is identical with the structure of left thrust plate, on described right thrust plate, be provided with circular seal compensation filler opening and head band point sealing compensation oil outlet, on described right thrust plate, be provided with the axis hole matching with rotating shaft and the mounting groove cooperatively interacting with positioning plate right-hand member, on the right inside cover plate of described right thrust plate right-hand member, be provided with the oil back chamber communicating with circular seal compensation filler opening and head band point sealing compensation oil outlet, between described right thrust plate and right inside cover plate, on oil back chamber edge, seal ring is being set.
In order to solve the problems of the technologies described above better, the further technological scheme that the present invention adopts is: be provided with and be respectively arranged with the drainage trough cooperatively interacting with one of them mounting groove at middle part, the upper and lower two ends of described outer arcuate limiting board, be provided with the conduction hole that two rows and mounting groove cooperatively interact in the inside of described outer arcuate limiting board.
In order to solve the problems of the technologies described above better, the further technological scheme that the present invention adopts is: on the inwall of the described oil outlet place pump housing, be provided with pressure regulation groove, between one end of described pressure regulation groove and ring gear center, the scope of angle a is 8～15 degree, and between the other end of described pressure regulation groove and ring gear center, the scope of angle b is 75～87 degree.
Advantage of the present invention is: above-mentioned fixed displacement inside engaged gear pump structure, and low cost of manufacture, good sealing effect, wear-resisting property is superior, and pressure is high and stable, noise is little, long service life.
Brief description of the drawings
Fig. 1 is the sectional structure schematic diagram of fixed displacement inside engaged gear pump structure of the present invention.
Fig. 2 is the sectional structure schematic diagram of A-A direction in Fig. 1.
Fig. 3 is the structural representation of right inside cover plate in Fig. 1.
Fig. 4 is the structural representation of right thrust plate in Fig. 1.
Fig. 5 is the structural representation of Fig. 2 China and foreign countries arc-shaped limit plate.
In figure: 1, the pump housing, 2, filler opening, 3, oil outlet, 4, left inside cover plate, 5, left outside cover plate, 6, right inside cover plate, 7, right outside cover plate, 8, fixing bolt, 9, nut, 10, ring gear, 11, rotating shaft, 12, internal gear, 13, sliding bearing, 14, reinforced seal, 15, seal ring, 16, teeth groove, 17, oil inlet hole, 18, outer arcuate limiting board, 19, arc limiting board, 20, positioning plate, 21, mounting hole, 22, mounting groove, 23, Stamping Steel Ribbon, 24, spring sheet, 25, hyperbaric chamber, 26, low-pressure cavity, 27, left thrust plate, 28, right thrust plate, 29, circular seal compensation filler opening, 30, head band point sealing compensation oil outlet, 31, axis hole, 32, mounting groove, 33, oil back chamber, 34, seal ring, 35, drainage trough, 36, conduction hole, 37, pressure regulation groove, 38, axis hole, 39, bolt hole, 40, bolt hole.
Embodiment
Describe in detail particular content of the present invention below in conjunction with the drawings and specific embodiments.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, fixed displacement inside engaged gear pump structure, comprise: the pump housing 1, be arranged on filler opening 2 and oil outlet 3 on the pump housing 1, be arranged on left inside cover plate 4 and the left outside cover plate 5 in the pump housing 1 left side, be arranged on right inside cover plate 6 and the right outside cover plate 7 on the pump housing 1 right side, the described pump housing 1, left inside cover plate 4, left outside cover plate 5, right inside cover plate 6 is fixedly connected with nut 9 by fixing bolt 8 with right outside cover plate 7, as shown in Figure 2, bolt 8 is through the bolt hole 40 on the pump housing 1, be provided with ring gear 10 in the inner rotation of the described pump housing 1, be provided with rotating shaft 11 in the inside of described ring gear 10, in rotating shaft 11, be provided with internal gear 12, described internal gear 12 departs from mutually mutually with a side inwall center of engaging of ring gear 10, between described rotating shaft 11 and described left inside cover plate 4 and right inside cover plate 6, be provided with sliding bearing 13, between described rotating shaft 11 and described left outside cover plate 5, be provided with reinforced seal 14, between the described pump housing 1 and the right inside cover plate 6 on left inside cover plate 4 and right side, be respectively arranged with seal ring 15, on described ring gear 10 inwalls, be evenly provided with some teeth groove 16 that cooperatively interact with internal gear 12, around the gear ring of described ring gear 10, be evenly provided with the oil inlet hole 17 that some teeth groove 16 are interconnected, between described ring gear 10 inwalls and internal gear 12, outer arcuate limiting board 18 is set, arc limiting board 19 and positioning plate 20, the two ends of described positioning plate 20 are fixed on left inside cover plate 4 and right inside cover plate 6 by mounting hole 21 respectively, there are two mounting grooves 22 in the arranged outside of described arc limiting board 19, in mounting groove 22 between described outer arcuate limiting board 18 and arc limiting board 19, be provided with Stamping Steel Ribbon 23 and spring sheet 24, under the effect of spring sheet 24 power, the internal surface of arc limiting board 19 and internal gear 12 fit tightly, the outer surface of outer arcuate limiting board 18 and ring gear 10 fit tightly, described outer arcuate limiting board 18, arc limiting board 19 will be divided into hyperbaric chamber 25 and low-pressure cavity 26 between ring gear 10 inwalls and internal gear 12, described hyperbaric chamber 25 is connected with described filler opening 2 by oil inlet hole 17 on ring gear 10, described low-pressure cavity 26 is connected with described oil outlet 3 by oil inlet hole 17 on ring gear 10, between described ring gear 10 and left inside cover plate 4, be provided with left thrust plate 27, between described ring gear 10 and right inside cover plate 6, be provided with right thrust plate 28, described right thrust plate 28 is identical with the structure of left thrust plate 27, on described right thrust plate 28, be provided with circular seal compensation filler opening 29 and head band point sealing compensation oil outlet 30, on described right thrust plate 28, be provided with the axis hole 31 matching with rotating shaft 11 and the mounting groove 32 cooperatively interacting with positioning plate 20 right-hand members, on the right inside cover plate 6 of described right thrust plate 28 right-hand members, be provided with the oil back chamber 33 communicating with circular seal compensation filler opening 29 and head band point sealing compensation oil outlet 30, between described right thrust plate 28 and right inside cover plate 6, on oil back chamber 33 edges, seal ring 34 is being set, on right inside cover plate 6, be also provided with the axis hole 38 that cooperatively interacts with rotating shaft 11 and with bolt 8 bolt hole 39 that cooperatively interacts.
In the present embodiment, in the middle part of two ends, be provided with and be respectively arranged with the drainage trough 35 cooperatively interacting with one of them mounting groove 22 Shang Xia 18 at described outer arcuate limiting board, be provided with the conduction hole 36 that two rows and mounting groove 22 cooperatively interact in the inside of described outer arcuate limiting board 18.
In the present embodiment, on the inwall of described oil outlet 3 place's pump housings 1, be provided with pressure regulation groove 37, between one end of described pressure regulation groove 37 and ring gear 10 centers, the scope of angle a is 8～15 degree, and between the other end of described pressure regulation groove 37 and ring gear 10 centers, the scope of angle b is 75～87 degree.Pressure regulation groove 36 positions and angular setting can make pump internal pressure stable, extend its long service life.
When above-mentioned fixed displacement crescent gear pump uses, power plant drive rotating shaft 11 to rotate, rotating shaft 11 drives internal gear 12, thereby internal gear 12 rotates with the intermeshing drive of ring gear 10 ring gear 10, under the effect of spring sheet 24 elastic force, the internal surface of arc limiting board 19 and internal gear 12 fit tightly, oil enters from filler opening 2, successively, by oil inlet hole 17 on oil inlet hole 17, low-pressure cavity 26, hyperbaric chamber 25, ring gear 10 on filler opening 2, ring gear 10, exports from oil outlet 3.
After entering oil back chamber 33 by the circular seal compensation filler opening 29 on left thrust plate 27 and the right thrust plate 28 of ring gear 10 bi-side, high pressure oil flows out oil back chamber 33 by head band point sealing compensation oil outlet 30, under the effect of high pressure oil, left thrust plate 28 and right thrust plate 28 are close to ring gear 10 bi-side all the time, keep sealing, greatly improved sealing effect.
In the present embodiment, in the middle part of two ends, be provided with and be respectively arranged with the drainage trough 35 cooperatively interacting with one of them mounting groove 22 Shang Xia 18 at described outer arcuate limiting board, be provided with the conduction hole 36 that two rows and mounting groove 22 cooperatively interact in the inside of described outer arcuate limiting board 18.
Working procedure mesohigh oil can enter mounting groove 22 by drainage trough 35 and conduction hole 36, in the time that pressure oil acts on surperficial between outer arcuate limiting board 18 and arc limiting board 19, make the internal surface of arc limiting board 19 be close to all the time internal gear 12, the outer surface of outer arcuate limiting board 18 is close to ring gear 10 all the time.
Claims (3)
1. fixed displacement inside engaged gear pump configuration, comprise: the pump housing (1), be arranged on oil-in (2) and oil-out (3) on the pump housing (1), be arranged on left inside cover plate (4) and the left outside cover plate (5) in the pump housing (1) left side, be arranged on right inside cover plate (6) and the right outside cover plate (7) on the pump housing (1) right side, the described pump housing (1), left inside cover plate (4), left outside cover plate (5), right inside cover plate (6) is fixedly connected with nut (9) by set bolt (8) with right outside cover plate (7), be provided with ring gear (10) in the inner rotation of the described pump housing (1), be provided with rotating shaft (11) in the inside of described ring gear (10), in rotating shaft (11), be provided with internal gear (12), described internal gear (12) departs from mutually mutually with a side inwall center of engaging of ring gear (10), between described rotating shaft (11) and described left inside cover plate (4) and right inside cover plate (6), be provided with sliding bearing (13), between described rotating shaft (11) and described left outside cover plate (5), be provided with reinforced seal (14), between the described pump housing (1) and the right inside cover plate (6) on left inside cover plate (4) and right side, be respectively arranged with sealing ring (15), on described ring gear (10) inwall, be evenly provided with some teeth groove (16) that cooperatively interact with internal gear (12), around the gear ring of described ring gear (10), be evenly provided with the fuel feed hole (17) that some teeth groove (16) are interconnected, between described ring gear (10) inwall and internal gear (12), outer arcuate limiting plate (18) is set, arc limiting plate (19) and location-plate (20), the two ends of described location-plate (20) are fixed on left inside cover plate (4) and right inside cover plate (6) by installing hole (21) respectively, there are two mounting grooves (22) in the arranged outside of described arc limiting plate (19), in mounting groove (22) between described outer arcuate limiting plate (18) and arc limiting plate (19), be provided with sealing strip (23) and spring leaf (24), under the effect of spring leaf (24) power, the inner surface of arc limiting plate (19) and internal gear (12) fit tightly, the outer surface of outer arcuate limiting plate (18) and ring gear (10) fit tightly, described outer arcuate limiting plate (18), arc limiting plate (19) will be divided into high pressure chest (25) and low-pressure cavity (26) between ring gear (10) inwall and internal gear (12), described high pressure chest (25) is connected with described oil-in (2) by the upper fuel feed hole (17) of ring gear (10), described low-pressure cavity (26) is connected with described oil-out (3) by the upper fuel feed hole (17) of ring gear (10), it is characterized in that: between described ring gear (10) and left inside cover plate (4), be provided with left valve plate (27), between described ring gear (10) and right inside cover plate (6), be provided with right valve plate (28), described right valve plate (28) is identical with the structure of left valve plate (27), on described right valve plate (28), be provided with circular seal compensation oil-in (29) and head band point sealing compensation oil-out (30),On described right valve plate (28), be provided with the axis hole (31) matching with rotating shaft (11) and the mounting groove (32) cooperatively interacting with location-plate (20) right-hand member, on the right inside cover plate (6) of described right valve plate (28) right-hand member, be provided with the oil back chamber (33) communicating with circular seal compensation oil-in (29) and head band point sealing compensation oil-out (30), between described right valve plate (28) and right inside cover plate (6), on oil back chamber (33) edge, sealing ring (34) be set.
2. according to fixed displacement inside engaged gear pump structure claimed in claim 1, it is characterized in that: be provided with and be respectively arranged with the drainage trough (35) cooperatively interacting with one of them mounting groove (22) at middle part, the upper and lower two ends of described outer arcuate limiting board (18), be provided with the conduction hole (36) that two rows and mounting groove (22) cooperatively interact in the inside of described outer arcuate limiting board (18).
3. according to the fixed displacement inside engaged gear pump structure described in claim 1 or 2, it is characterized in that: locate at described oil outlet (3) to be provided with pressure regulation groove (37) on the inwall of the pump housing (1), between one end of described pressure regulation groove (37) and ring gear (10) center, the scope of angle a is 8～15 degree, and between the other end of described pressure regulation groove (36) and ring gear (10) center, the scope of angle b is 75～87 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061003.6A CN103883517A (en) | 2014-02-24 | 2014-02-24 | Fixed-displacement internal gear pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410061003.6A CN103883517A (en) | 2014-02-24 | 2014-02-24 | Fixed-displacement internal gear pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883517A true CN103883517A (en) | 2014-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410061003.6A Pending CN103883517A (en) | 2014-02-24 | 2014-02-24 | Fixed-displacement internal gear pump structure |
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| Country | Link |
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| CN (1) | CN103883517A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422442A (en) * | 2015-12-31 | 2016-03-23 | 江苏驰翔精密齿轮股份有限公司 | Internal gear pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| DE19613833B4 (en) * | 1996-04-06 | 2004-12-09 | Bosch Rexroth Ag | Internal gear machine, in particular internal gear pump |
| EP1760315A2 (en) * | 2005-09-01 | 2007-03-07 | Bosch Rexroth Aktiengesellschaft | Internal gear pump with filler |
| CN102400907A (en) * | 2011-11-08 | 2012-04-04 | 重庆大学 | Internal gear pump |
| CN202348654U (en) * | 2011-09-22 | 2012-07-25 | 胡忠强 | Efficient pressure compensation type inner gear pump |
| CN102619746A (en) * | 2012-02-29 | 2012-08-01 | 盐城市驰英机械科技有限公司 | Internal gear pump |
| CN202360387U (en) * | 2011-11-08 | 2012-08-01 | 重庆液动科技有限公司 | Thrust plate structure of internal gear pump |
| CN103225607A (en) * | 2012-01-25 | 2013-07-31 | 罗伯特·博世有限公司 | Internal gear pump |
| CN203702548U (en) * | 2014-02-24 | 2014-07-09 | 江苏驰翔精密齿轮有限公司 | Constant discharging internal gear pump structure |
-
2014
- 2014-02-24 CN CN201410061003.6A patent/CN103883517A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19613833B4 (en) * | 1996-04-06 | 2004-12-09 | Bosch Rexroth Ag | Internal gear machine, in particular internal gear pump |
| CN1412439A (en) * | 2002-09-28 | 2003-04-23 | 宁波华液机器制造有限公司 | Internal gear pump |
| EP1760315A2 (en) * | 2005-09-01 | 2007-03-07 | Bosch Rexroth Aktiengesellschaft | Internal gear pump with filler |
| CN202348654U (en) * | 2011-09-22 | 2012-07-25 | 胡忠强 | Efficient pressure compensation type inner gear pump |
| CN102400907A (en) * | 2011-11-08 | 2012-04-04 | 重庆大学 | Internal gear pump |
| CN202360387U (en) * | 2011-11-08 | 2012-08-01 | 重庆液动科技有限公司 | Thrust plate structure of internal gear pump |
| CN103225607A (en) * | 2012-01-25 | 2013-07-31 | 罗伯特·博世有限公司 | Internal gear pump |
| CN102619746A (en) * | 2012-02-29 | 2012-08-01 | 盐城市驰英机械科技有限公司 | Internal gear pump |
| CN203702548U (en) * | 2014-02-24 | 2014-07-09 | 江苏驰翔精密齿轮有限公司 | Constant discharging internal gear pump structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422442A (en) * | 2015-12-31 | 2016-03-23 | 江苏驰翔精密齿轮股份有限公司 | Internal gear pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 224015, Jianye Road, Yancheng City District, Jiangsu Province Applicant after: JIANGSU CHIXIANG PRECISION GEAR CO., LTD. Address before: 224015, Jianye Road, Yancheng City District, Jiangsu Province Applicant before: Jiangsu Chixiang Precision Gears Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANGSU CHIXIANG PRECISION GEAR CO., LTD. TO: JIANGSU CHI XIANG PRECISION GEAR CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140625 |