CN103410726A - Ovoid gear pump with double parallel structure - Google Patents
Ovoid gear pump with double parallel structure Download PDFInfo
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- CN103410726A CN103410726A CN2013102875499A CN201310287549A CN103410726A CN 103410726 A CN103410726 A CN 103410726A CN 2013102875499 A CN2013102875499 A CN 2013102875499A CN 201310287549 A CN201310287549 A CN 201310287549A CN 103410726 A CN103410726 A CN 103410726A
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Abstract
The invention discloses an ovoid gear pump with a double parallel structure. The ovoid gear pump comprises a driving motor and two ovoid gear pairs, wherein the two ovoid gear pairs are arranged in the shell in parallel, a separation panel is arranged between the two gear pairs and is used for separating the two gear pairs into a first assistant gear pump and a second assistant gear pump, the first assistant gear pump comprises a first driving gear and a first driven gear, the second assistant gear pump comprises a second driving gear and a second driven gear, the first driving gear and the second driving gear are fixed on a first main shaft in a malposed manner, and the first driven gear and the second driven gear are installed on a second main shaft in a floating manner. The ovoid gear pump disclosed by the invention is simple in structure and convenient to install, the total discharge capacity mainly depend on the shape of an ovoid pitch curve instead of the number of gear module, the two ovoid gear pairs are mutually malposed, so that the discharge capacity changes of the two assistant gear pumps can mutually compensate, so as to realize that when the total discharge capacity is increased, the wave of the total discharge capacity is reduced at the same time, and the performance requirements of multiple occasions for the gear pump are met.
Description
Technical field
The invention belongs to the gear pump technical field, be specifically related to a kind of oval gear pump of two-in-parallel structure.
Background technique
The gear pump great majority are monodentate wheel pumps that two gears form, and the minority multiple gearpump is the just simple expansion of monodentate wheel pump also.The ordinary gear pump delivery depends primarily on the module size, and the modulus of gear is larger, and the gear pump delivery increases thereupon; Under the prerequisite that the volume of pump remains unchanged, increase module and can increase pump delivery, but will correspondingly reduce the number of teeth.The undercut characteristic limitations of gear the minimum teeth number of gear, therefore this method is very limited for the effect that increases discharge capacity.Also there is the factor of what is called " pocketed oil " in common gear pump, and the pocketed oil amount is also and square being directly proportional of modulus, and also can increase the pocketed oil amount while namely relying on increasing modulus to increase discharge capacity, and this has just limited the performance improvement of gear pump.
Summary of the invention
The present invention is in order to overcome above-mentioned technological deficiency, provides a kind of and keeps under prerequisite that flow is constant, the oval gear pump of the two-in-parallel structure that pulsating quantity obviously reduces.
In order to address the above problem, the present invention is achieved by following technological scheme:
The ovum gear pump of two-in-parallel structure of the present invention, comprise drive motor and be arranged on the gear pair in housing, in described housing, be provided with oil sucting cavity and oil-discharging cavity, on oil sucting cavity, be provided with and enter hole, on oil-discharging cavity, be provided with oil outlet, described gear pair is two groups of gear pairs that are arranged in parallel, in the middle of it, be provided with one and separate panel, two groups of gear pairs are separated into to first group of sub-gear pump and second group of sub-gear pump, described sub-gear pump comprises two groups of intermeshing oval gears, the driving gear mutual dislocation of the driving gear of described first group of sub-gear pump and second group of sub-gear pump is installed.
Further, in order to reduce to greatest extent the pulsation of discharge capacity, easy for installation, the driving gear mutual dislocation of the driving gear of described first group of sub-gear pump and second group of sub-gear pump 90 degree are installed, and realize that by the corresponding angle that staggers of the key mapping on wheel hub mutual dislocation installs.
Further, for simplified structure, convenient control, the driving gear of the driving gear of described first group of sub-gear pump and second group of sub-gear pump is fixed on the first main shaft.
Further, for simplified structure, the driven gear of the driven gear of described first group of sub-gear pump and second group of sub-gear pump floats and is arranged on the second main shaft.
Further, in order to make to separate the panel balance, the oil sucting cavity of described first group of sub-gear pump and second group of sub-gear pump is connected, and the oil-discharging cavity of first group of sub-gear pump and second group of sub-gear pump is connected.
Further, four of described two groups of gear pairs gears oval gear identical with the number of teeth that be that eccentricity is identical, modulus is identical.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention adopts four identical oval gears to form two pairs of conjugate gears pairs, every group of gear pair forms one group of independent sub-gear pump, in the continuous rotation process of oval gear pair, gear periphery maximum diameter and path the difference of inswept area, can cause volume-variation, form the space of carrying liquid.The volume-variation amount of its generation mainly depends on the shape of avette pitch curve rather than the size of module, therefore module is only determined by working strength, modulus can reduce as far as possible, thereby reach the purpose that reduces the pocketed oil amount, the velocity ratio of oval gear pair is with change in location, and two groups of sub-gear pump dislocation 90 degree are installed, and its discharge capacity is compensated mutually, reach the pulsation that reduces discharge capacity when increasing total displacement, can meet the performance requirement of many occasions to gear pump.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is plan view of the present invention;
Fig. 2 is principle schematic of the present invention.
In figure: the 1-housing, 2-separates panel, first group of sub-gear pump of 3-, 31-the first driving gear, 32-the first driven gear, second group of sub-gear pump of 4-, 41-the second driving gear, 42-the second driven gear, 5-the first main shaft, 6-the second main shaft, 7-oil sucting cavity, 8-oil-discharging cavity.
Embodiment
As Fig. 1～shown in Figure 2, the oval gear pump of two-in-parallel structure of the present invention, comprise drive motor, be arranged on two groups of gear pairs in housing 1, two groups of gear pairs are arranged in parallel, between two groups of gear pairs, be provided with and separate panel 2, two groups of gear pairs are separated into to first group of sub-gear pump 3 and second group of sub-gear pump 4.
Described first group of sub-gear pump 3 comprises the first driving gear 31 and the first driven gear 32; Second group of sub-gear pump 4 comprises the second driving gear 41 and the second driven gear 42.Described the first driving gear 31 and the second driving gear 41 are fastened on the first main shaft 5 by key, the first driven gear 32 and the second driven gear 42 float and are arranged on the second main shaft 6, described the first driving gear 31 and the second driving gear 41 are arranged on the first main shaft 5 by mutual dislocation, its angle that staggers is 0 degree～180 degree, preferred 90 degree, described driving gear is realized arranged in dislocation by the corresponding angle that staggers of the keyway on wheel hub; Described the first main shaft is driven by drive motor.
In described housing 1, be provided with oil sucting cavity 7 and oil-discharging cavity 8, two gear pairs are separated oil sucting cavity 7 and oil-discharging cavity 8, the oil sucting cavity 7 of two groups of sub-gear pumps is connected, and oil-discharging cavity 8 is connected, and is provided with oil inlet hole on described oil sucting cavity 7, is provided with oil outlet on oil-discharging cavity 8.
Described the first driving gear 31, the first driven gear 32, the second driving gear 41 and the second driven gear 42 are that eccentricity is identical, modulus the is identical oval gear identical with the number of teeth.
During use, in the connection of rotating process of oval gear pair, the area that gear periphery maximum diameter and path are inswept is different, make volume change, form the space of carrying liquid, the volume-variation amount that gear pump produces mainly depends on the shape of avette pitch curve rather than the size of module, therefore module is only determined by strength condition, can reduce as far as possible, thereby reduce the pocketed oil amount, the velocity ratio of oval gear pair is with change in location, the corresponding flow oscillation of a pair of gear is larger, the two pairs of gear pairs, 90 degree that mutually stagger are arranged in parallel, the displacement variation of two sub-gear pumps is compensated mutually, when increasing total displacement, reduced the pulsation of discharge capacity.The present invention is simple in structure, easy for installation, can increase as wide as possible as required total displacement, meets the need of work of gear pump.
Other structure of the oval gear pump of the described two-in-parallel structure of the present embodiment is referring to prior art.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, therefore every, do not break away from the technical solution of the present invention content, according to technical spirit of the present invention, to any modification, equivalent variations and modification that above embodiment does, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. the oval gear pump of a two-in-parallel structure, comprise drive motor and be arranged on the gear pair in housing, in described housing, be provided with oil sucting cavity and oil-discharging cavity, on oil sucting cavity, be provided with and enter hole, on oil-discharging cavity, be provided with oil outlet, it is characterized in that: described gear pair is two groups of gear pairs that are arranged in parallel, in the middle of it, be provided with one and separate panel, two groups of gear pairs are separated into to first group of sub-gear pump and second group of sub-gear pump, described sub-gear pump comprises two groups of intermeshing oval gears, the mutual arranged in dislocation of the driving gear of the driving gear of described first group of sub-gear pump and second group of sub-gear pump.
2. the oval gear pump of two-in-parallel structure according to claim 1, it is characterized in that: the driving gear mutual dislocation of the driving gear of described first group of sub-gear pump and second group of sub-gear pump 90 degree are installed, and realize that by the corresponding angle that staggers of the key mapping on wheel hub mutual dislocation installs.
3. the oval gear pump of two-in-parallel structure according to claim 1, it is characterized in that: the driving gear of the driving gear of described first group of sub-gear pump and second group of sub-gear pump is fixed on the first main shaft.
4. the oval gear pump of two-in-parallel structure according to claim 1, it is characterized in that: the driven gear of the driven gear of described first group of sub-gear pump and second group of sub-gear pump floats and is arranged on the second main shaft.
5. the oval gear pump of two-in-parallel structure according to claim 1, it is characterized in that: the oil sucting cavity of described first group of sub-gear pump and second group of sub-gear pump is connected, and the oil-discharging cavity of first group of sub-gear pump and second group of sub-gear pump is connected.
6. according to the oval gear pump of the described two-in-parallel structure of claim 1 to 5 any one, it is characterized in that: four gears of described two groups of gear pairs are that eccentricity is identical, modulus the is identical oval gear identical with the number of teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287549.9A CN103410726B (en) | 2013-07-09 | 2013-07-09 | A kind of oval gear pump of two-in-parallel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310287549.9A CN103410726B (en) | 2013-07-09 | 2013-07-09 | A kind of oval gear pump of two-in-parallel structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410726A true CN103410726A (en) | 2013-11-27 |
| CN103410726B CN103410726B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310287549.9A Expired - Fee Related CN103410726B (en) | 2013-07-09 | 2013-07-09 | A kind of oval gear pump of two-in-parallel structure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3237974A1 (en) * | 1981-10-15 | 1983-05-05 | Diesel Kiki Co. Ltd., Tokyo | Rotation device for the displacement of flowing media |
| CN2615382Y (en) * | 2003-02-28 | 2004-05-12 | 上海工程技术大学 | Elliptic gear pump |
| EP1598556A1 (en) * | 2004-05-17 | 2005-11-23 | Viking Pump, Inc. | Multiple gear pump |
| CN2760288Y (en) * | 2004-12-31 | 2006-02-22 | 王钰絜 | Double-cylinder double-gear pump |
| CN201748134U (en) * | 2010-08-06 | 2011-02-16 | 浙江平柴泵业有限公司 | Novel oil pump with double-layer structure |
| CN201818361U (en) * | 2010-03-03 | 2011-05-04 | 段方泉 | Dual-rotation four-circulation piston type double-shaft internal combustion engine, pressure flow driving machine and pump |
| CN202250817U (en) * | 2011-09-20 | 2012-05-30 | 天津市天机液压机械有限公司 | Low-noise dual-gear pump |
| CN203441744U (en) * | 2013-07-09 | 2014-02-19 | 佛山科学技术学院 | Oval gear pump adopting double parallel structure |
-
2013
- 2013-07-09 CN CN201310287549.9A patent/CN103410726B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3237974A1 (en) * | 1981-10-15 | 1983-05-05 | Diesel Kiki Co. Ltd., Tokyo | Rotation device for the displacement of flowing media |
| CN2615382Y (en) * | 2003-02-28 | 2004-05-12 | 上海工程技术大学 | Elliptic gear pump |
| EP1598556A1 (en) * | 2004-05-17 | 2005-11-23 | Viking Pump, Inc. | Multiple gear pump |
| CN2760288Y (en) * | 2004-12-31 | 2006-02-22 | 王钰絜 | Double-cylinder double-gear pump |
| CN201818361U (en) * | 2010-03-03 | 2011-05-04 | 段方泉 | Dual-rotation four-circulation piston type double-shaft internal combustion engine, pressure flow driving machine and pump |
| CN201748134U (en) * | 2010-08-06 | 2011-02-16 | 浙江平柴泵业有限公司 | Novel oil pump with double-layer structure |
| CN202250817U (en) * | 2011-09-20 | 2012-05-30 | 天津市天机液压机械有限公司 | Low-noise dual-gear pump |
| CN203441744U (en) * | 2013-07-09 | 2014-02-19 | 佛山科学技术学院 | Oval gear pump adopting double parallel structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103410726B (en) | 2016-12-28 |
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Granted publication date: 20161228 Termination date: 20190709 |