CN102966535A - Inside engaged gear pump with static pressure supporting device - Google Patents
Inside engaged gear pump with static pressure supporting device Download PDFInfo
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- CN102966535A CN102966535A CN2012104295652A CN201210429565A CN102966535A CN 102966535 A CN102966535 A CN 102966535A CN 2012104295652 A CN2012104295652 A CN 2012104295652A CN 201210429565 A CN201210429565 A CN 201210429565A CN 102966535 A CN102966535 A CN 102966535A
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- internal gear
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Abstract
The invention discloses an inside engaged gear pump with a static pressure supporting device. The inside engaged gear pump comprises a pump body, an external gear and an internal gear, which are arranged closely to one side of the pump body and are meshed, and a swing link between the external gear and the internal gear; and the swing link divides a non-meshing area between the external gear and the internal gear into an oil absorption area and an oil pressing area. The inside engaged gear pump is characterized in that a static pressure supporting device is arranged on an external side of the internal gear and corresponding to the oil pressing area in the pump body; the static pressure supporting device comprises a supporting plate fixed in the pump body and for supporting the internal gear; the supporting plate is provided with an arc surface cooperating with an outer circumference of the internal gear; the arc surface is provided with at least one groove corresponding to the oil pressing area; and the groove communicates with the oil pressing area through a plurality of small holes on the internal gear. According to the invention, the static pressure supporting device is used to bear radial unbalanced force from the internal gear, reduce the friction between the periphery of the internal gear and the support thereof, and further reduce the heat and wear of the two, and thereby improving output pressure and mechanical efficiency of the gear pump and prolonging service life.
Description
Technical field
The present invention relates to a kind of crescent gear pump, especially a kind of crescent gear pump that is provided with static pressure supporting device.
Background technique
At present conventional crescent gear pump generally includes the pump housing and is located at external gear and internal gear in the pump housing, Yi Bian described external gear and internal gear near being meshed, another side is then separated by swing link.Described swing link is divided into two spaces with the non-mesh regional between external gear and the internal gear, and the space of two gear drop out of gears is oil suction districts, and the space of trend engagement is laminated oil zone.External gear generally links to each other with transmission shaft or makes one, and by the drive unit driven rotary.When the inside engaged gear pump work, the external gear High Rotation Speed also drives the internal gear rotation, in the process of external gear and internal gear transmission, the oil suction district tight Container Volume of Methane of two gear drop out of gears increases, form negative pressure, filler opening from the pump housing sucks fluid, and the laminated oil zone tight Container Volume of Methane of two gears trend engagement dwindles, and fluid is extruded from the oil outlet on the pump housing.
Yet mainly there is following problems in present above-mentioned crescent gear pump: during the inside engaged gear pump work, delivery pressure is higher, the suffered radial imbalance force of internal gear is just larger, frictional force, heating between internal gear periphery and its pump housing of support are just larger, serious wear, cause the mechanical efficiency of gear pump to reduce lifetime.The performance of defects on high pressure (being higher than 12Mpa) crescent gear pump is especially obvious, and pressure specification was limited to when this had also just caused present domestic production crescent gear pump.
Summary of the invention
The present invention seeks to: a kind of crescent gear pump that is provided with static pressure supporting device is provided, this crescent gear pump can bear by the static pressure supporting device that the internal gear outer circumferential side is provided with the radial imbalance force of internal gear, reduce the frictional force between internal gear and its support, reduce the heating wearing and tearing between internal gear periphery and its support, further improve the working efficiency of gear pump, and prolong the working life of gear pump.
Technological scheme of the present invention is: a kind of crescent gear pump that is provided with static pressure supporting device, comprise the pump housing, be located in the pump housing near the external gear and the internal gear that are meshed on one side and be located at external gear and internal gear between swing link, described swing link is separated into oil suction district and laminated oil zone with the non-mesh regional between external gear and the internal gear; It is characterized in that the laminated oil zone corresponding to inside arranges static pressure supporting device in the internal gear outside in the described pump housing, this static pressure supporting device comprises and is fixed on the dunnage that is used for the support internal gear in the pump housing, has the arc surface that cooperates with the internal gear excircle on the described dunnage, be provided with at least one groove corresponding to laminated oil zone on the described arc surface, described groove is communicated with laminated oil zone by some apertures that internal gear is provided with.
Further, groove described in the present invention extends to the laminated oil zone that covers external gear and internal gear along the internal gear excircle.
Preferred, groove described in the present invention covers the meshing zone of external gear and internal gear simultaneously.
Further, the same with routine techniques, in the both sides of external gear and internal gear floating side plate is set all in the pump housing described in the present invention, described swing link is fixed on the floating side plate of both sides by pilot pin.
Further, be fixed with the stop pin that the restriction swing link moves described in the present invention on the floating side plate.Described stop pin is arranged on the top of swing link usually.
Further, the inner arc surface of swing link described in the present invention contacts with the tooth top of external gear, and the exterior arc surface of swing link contacts with the tooth top of internal gear.
Further, dunnage is circular arc described in the present invention.
Advantage of the present invention is:
The present invention is when real work, the radial imbalance force that part fluid in the two gear laminated oil zones is subject in order to bear internal gear in aperture enters groove on the dunnage, this part fluid enters behind the groove so that formed the very thin oil film of one deck between internal gear periphery and its support, isolated internal gear periphery and its support, compare routine techniques, not only reduce internal gear and acted on the positive pressure that it supports, and the dry friction of change solid is the viscous friction of liquid, greatly reduce the frictional force that the internal gear periphery is subject to, thereby improved the mechanical efficiency of gear pump.Flowing of oil film also taken away the heat that viscous friction produces simultaneously, thereby reduced the wearing and tearing between internal gear periphery and its support, prolonged the working life of whole gear pump, also more is conducive to improve the delivery pressure of crescent gear pump.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is structural representation of the present invention.
Wherein: 1, the pump housing; 2, external gear; 3, internal gear; 4, dunnage; 5, groove; 6, swing link; 7, pilot pin; 8, stop pin; 9, aperture; A, oil suction district; B, laminated oil zone.
Embodiment
Embodiment: in conjunction with shown in Figure 1, this set provided by the invention has the crescent gear pump of static pressure supporting device, it has the pump housing 1, the pump housing 1 interior external gear 2 and the internal gear 3 that is meshed near on one side that equally be provided with routine techniques, the both sides of described external gear 2 and internal gear 3 all arrange floating side plate (not shown in FIG.), be fixed with swing link 6 by pilot pin 7 on the floating side plate, this swing link 6 is separated into two spaces between external gear 2 and internal gear 3 and with the non-mesh regional of external gear 2 and internal gear 3, wherein the space of two gear drop out of gears is oil suction district A, be communicated with the filler opening (not drawing on the figure) on the pump housing 1, and the space of two gears trend engagement is laminated oil zone B, be communicated with the oil outlet (not drawing on the figure) on the pump housing 1, specifically as shown in Figure 1.Also be fixed with the stop pin 8 that restriction swing link 6 moves (upwards floating) described in the present embodiment on the floating side plate, this stop pin 8 is positioned at the top of swing link 6.And the inner arc surface of described swing link 6 contacts with the tooth top of external gear 2, and the exterior arc surface of swing link 6 contacts with the tooth top of internal gear 3.
Design main points of the present invention are: the laminated oil zone B corresponding to inside arranges static pressure supporting device in internal gear 3 outsides in the described pump housing 1, this static pressure supporting device comprises and is fixed on the dunnage 4 that is used for support internal gear 3 in the pump housing 1, this dunnage 4 is circular arc in the present embodiment, its inner arc surface cooperates with internal gear 3 excircles, and be provided with a groove 5 corresponding to laminated oil zone B on the arc surface, visible two apertures 9 among some aperture 9(present embodiment Fig. 1 that described groove 5 is provided with by internal gear 3) be communicated with laminated oil zone B.
Groove described in the present embodiment 5 extends to laminated oil zone B and the meshing zone that covers simultaneously external gear 2 and internal gear 3 along internal gear 3 excircles, specifically as shown in Figure 1.
The present invention is when real work, the radial imbalance force that part fluid in the laminated oil zone B is subject in order to bear internal gear 3 in aperture 9 enters groove 5 on the dunnage 4, it is rear so that formed the very thin oil film of one deck between internal gear 3 peripheries and its support that this part fluid enters groove 5, isolated internal gear 3 peripheries and its support, compare routine techniques, not only reduce internal gear 3 and acted on the positive pressure that it supports, and the dry friction of change solid is the viscous friction of liquid, greatly reduce the frictional force that internal gear 3 peripheries are subject to, thereby improved the mechanical efficiency of gear pump.Flowing of oil film also taken away the heat that viscous friction produces simultaneously, thereby reduced the wearing and tearing between internal gear 3 peripheries and its support, prolonged the working life of whole gear pump, also more is conducive to improve the delivery pressure of crescent gear pump.
Certainly above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.The all Spirit Essence of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (7)
1. crescent gear pump that is provided with static pressure supporting device, comprise the pump housing (1), be located in the pump housing (1) near the external gear (2) and the internal gear (3) that are meshed on one side and be located at external gear (2) and internal gear (3) between swing link (6), described swing link (6) is separated into oil suction district (A) and laminated oil zone (B) with the non-mesh regional between external gear (2) and the internal gear (3); It is characterized in that the laminated oil zone (B) corresponding to inside arranges static pressure supporting device in internal gear (3) outside in the described pump housing (1), this static pressure supporting device comprises and is fixed on the dunnage (4) that is used for support internal gear (3) in the pump housing (1), has the arc surface that cooperates with internal gear (3) excircle on the described dunnage (4), be provided with at least one groove (5) corresponding to laminated oil zone (B) on the described arc surface, described groove (5) is communicated with laminated oil zone (B) by some apertures (9) that internal gear (3) is provided with.
2. the crescent gear pump that is provided with static pressure supporting device according to claim 1 is characterized in that described groove (5) extends to the laminated oil zone (B) that covers external gear (2) and internal gear (3) along internal gear (3) excircle.
3. the crescent gear pump that is provided with static pressure supporting device according to claim 2 is characterized in that described groove (5) covers the meshing zone of external gear (2) and internal gear (3) simultaneously.
4. the crescent gear pump that is provided with static pressure supporting device according to claim 1, it is characterized in that in the both sides of external gear (2) and internal gear (3) floating side plate being set all in the described pump housing (1), described swing link (6) is fixed on the floating side plate of both sides by pilot pin (7).
5. the crescent gear pump that is provided with static pressure supporting device according to claim 4 is characterized in that being fixed with on the described floating side plate the mobile stop pin (8) of restriction swing link (6).
6. according to claim 1 or the 4 or 5 described crescent gear pumps that are provided with static pressure supporting device, the inner arc surface that it is characterized in that described swing link (6) contacts with the tooth top of external gear (2), and the exterior arc surface of swing link (6) contacts with the tooth top of internal gear (3).
7. the crescent gear pump that is provided with static pressure supporting device according to claim 1 is characterized in that described dunnage (4) is circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429565.2A CN102966535B (en) | 2012-11-01 | 2012-11-01 | It is provided with the crescent gear pump of static pressure supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210429565.2A CN102966535B (en) | 2012-11-01 | 2012-11-01 | It is provided with the crescent gear pump of static pressure supporting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966535A true CN102966535A (en) | 2013-03-13 |
| CN102966535B CN102966535B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210429565.2A Expired - Fee Related CN102966535B (en) | 2012-11-01 | 2012-11-01 | It is provided with the crescent gear pump of static pressure supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102966535B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727026A (en) * | 2014-01-26 | 2014-04-16 | 潘光奇 | Inner engaged gear pump |
| CN103939332A (en) * | 2014-04-23 | 2014-07-23 | 成都大学 | Involute internally meshed gear pump with two sides of crescent plate having dynamic lubricating effect |
| CN104747433A (en) * | 2015-03-29 | 2015-07-01 | 仙居县黎明机械厂 | Inner engaged gear pump |
| CN106523351A (en) * | 2016-11-30 | 2017-03-22 | 哈尔滨工业大学 | Inner engaging gear pump used for stopper of petroleum machinery oil tube with over-small hole in oilfield |
| CN110230594A (en) * | 2018-03-06 | 2019-09-13 | 施瓦本冶金工程汽车有限公司 | Rotary pump |
| CN111102187A (en) * | 2019-12-23 | 2020-05-05 | 滁州神煜液压科技有限公司 | Internal gear pump |
Citations (10)
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|---|---|---|---|---|
| US3525580A (en) * | 1967-09-01 | 1970-08-25 | Otto Eckerle | Wear and tear-compensating high-pressure gear pump |
| US3676027A (en) * | 1970-03-14 | 1972-07-11 | Hans Molly | Crescent machine |
| GB1350620A (en) * | 1970-10-13 | 1974-04-18 | Molly H | Gear pumps or fluid motors |
| GB1471111A (en) * | 1974-04-29 | 1977-04-21 | Sperry Rand Ltd | Internally meshing gear pumps |
| DE2733712A1 (en) * | 1976-07-27 | 1978-02-02 | Eckerle Otto | High pressure gear pump or motor - has eccentrically offset gears meshing internally with deflector in space between |
| DE2924784A1 (en) * | 1979-06-20 | 1981-01-22 | Otto Eckerle | Internal gear-pump ring gear - has external pressure segment curved so that only ends contact ring in no-load condition |
| JP2000303966A (en) * | 1999-04-23 | 2000-10-31 | Toyooki Kogyo Co Ltd | Internal gear pump |
| 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 |
| CN201386651Y (en) * | 2009-03-31 | 2010-01-20 | 宁波高新协力机电液有限公司 | Load balancing bearing support device for inside gearing gear pump |
| CN201827069U (en) * | 2010-10-30 | 2011-05-11 | 辽宁工程技术大学 | Balanced type internal-gearing gear pump |
-
2012
- 2012-11-01 CN CN201210429565.2A patent/CN102966535B/en not_active Expired - Fee Related
Patent Citations (10)
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|---|---|---|---|---|
| US3525580A (en) * | 1967-09-01 | 1970-08-25 | Otto Eckerle | Wear and tear-compensating high-pressure gear pump |
| US3676027A (en) * | 1970-03-14 | 1972-07-11 | Hans Molly | Crescent machine |
| GB1350620A (en) * | 1970-10-13 | 1974-04-18 | Molly H | Gear pumps or fluid motors |
| GB1471111A (en) * | 1974-04-29 | 1977-04-21 | Sperry Rand Ltd | Internally meshing gear pumps |
| DE2733712A1 (en) * | 1976-07-27 | 1978-02-02 | Eckerle Otto | High pressure gear pump or motor - has eccentrically offset gears meshing internally with deflector in space between |
| DE2924784A1 (en) * | 1979-06-20 | 1981-01-22 | Otto Eckerle | Internal gear-pump ring gear - has external pressure segment curved so that only ends contact ring in no-load condition |
| JP2000303966A (en) * | 1999-04-23 | 2000-10-31 | Toyooki Kogyo Co Ltd | Internal gear pump |
| 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 |
| CN201386651Y (en) * | 2009-03-31 | 2010-01-20 | 宁波高新协力机电液有限公司 | Load balancing bearing support device for inside gearing gear pump |
| 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 (2)
| Title |
|---|
| 张建卓等: "内啮合齿轮泵内齿轮静压支撑研究", 《中国机械工程》, no. 13, 10 July 2011 (2011-07-10), pages 1532 - 1537 * |
| 朱佳斌: "内啮合齿轮泵浮动侧板的结构分析与设计", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》, no. 4, 15 April 2011 (2011-04-15) * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727026A (en) * | 2014-01-26 | 2014-04-16 | 潘光奇 | Inner engaged gear pump |
| CN103727026B (en) * | 2014-01-26 | 2016-03-23 | 潘光奇 | A kind of crescent gear pump |
| CN103939332A (en) * | 2014-04-23 | 2014-07-23 | 成都大学 | Involute internally meshed gear pump with two sides of crescent plate having dynamic lubricating effect |
| CN103939332B (en) * | 2014-04-23 | 2018-04-10 | 成都大学 | A kind of swing link bilateral has the involute crescent gear pump of dynamic lubricating effect |
| CN104747433A (en) * | 2015-03-29 | 2015-07-01 | 仙居县黎明机械厂 | Inner engaged gear pump |
| CN106523351A (en) * | 2016-11-30 | 2017-03-22 | 哈尔滨工业大学 | Inner engaging gear pump used for stopper of petroleum machinery oil tube with over-small hole in oilfield |
| CN106523351B (en) * | 2016-11-30 | 2018-11-23 | 哈尔滨工业大学 | Oil field petroleum machinery Undersize-hole oil pipe plugging device crescent gear pump |
| CN110230594A (en) * | 2018-03-06 | 2019-09-13 | 施瓦本冶金工程汽车有限公司 | Rotary pump |
| US11353020B2 (en) | 2018-03-06 | 2022-06-07 | Schwäbische Hüttenwerke Automotive GmbH | Rotary pump with supporting pockets |
| CN111102187A (en) * | 2019-12-23 | 2020-05-05 | 滁州神煜液压科技有限公司 | Internal gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102966535B (en) | 2016-06-22 |
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Granted publication date: 20160622 Termination date: 20181101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |