CN201599185U - Miniature external-gearing spur-gear cylindrical gear pump - Google Patents
Miniature external-gearing spur-gear cylindrical gear pump Download PDFInfo
- Publication number
- CN201599185U CN201599185U CN2009202437949U CN200920243794U CN201599185U CN 201599185 U CN201599185 U CN 201599185U CN 2009202437949 U CN2009202437949 U CN 2009202437949U CN 200920243794 U CN200920243794 U CN 200920243794U CN 201599185 U CN201599185 U CN 201599185U
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- gear
- oil
- cavity
- motor
- microminiature
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Abstract
The utility model discloses a miniature external-gearing spur-gear cylindrical gear pump, which comprises a pump body. The pump body mainly consists of a middle plate, an upper cover and a bottom plate, wherein the upper cover and the bottom plate are respectively arranged at two ends of the middle plate, a gear cavity arranged on the middle plate consists of an oil sucking cavity and an oil discharge cavity which are communicated to each other, the oil sucking cavity and the oil discharge cavity are respectively communicated to an oil inlet and an oil outlet which are arranged on the upper cover, a driving gear and a driven gear which are in external gearing are mounted between the oil sucking cavity and the oil discharge cavity, and the driving gear is connected with a motor. The gear pump is simple in structure, small in volume, convenient for manufacturing and mounting, low in manufacturing cost, light in integral weight and flexible in starting, can realize flow rate accurate stepless adjustment by adjusting the duty ratio of a power supply of the motor, and is adaptable to small-sized aerospace crafts and small-sized instrument hydraulic systems.
Description
Technical field
The utility model relates to a kind of gear pump, specifically is meant a kind of microminiature outer gearing straight toothed spur gear pump.
Background technique
Gear pump is a kind of of oil hydraulic pump, and its working principle is to utilize a pair of gear meshing motion, causes the variation of oil sucting cavity and oil-discharging cavity volume to carry out work.Its advantage is simple in structure, and is easily manufactured, and cost is low, allows the rotary speed height, be widely used, small-sized aerospace craft motor such as model plane with gear pump as its oil supplying device.
Small-sized aerospace craft is because of its volume is little, in light weight, and the fuel amount of carrying is few, and when overall weight is more little, the time of its single flight is just long more.
Because more than, the gear pump that is used for small-sized aerospace craft has been proposed requirement simple in structure, that overall weight is little, starting is sensitive, stability of flow also can accurately be regulated.
The model utility content
The purpose of this utility model is in order to overcome the deficiencies in the prior art and defective, a kind of microminiature outer gearing straight toothed spur gear pump is provided, this microminiature outer gearing straight toothed spur gear pump structure is simple, volume is little, manufacturing and easy for installation, and cost is low, overall weight is light, starting is sensitive, by adjusting the accurate electrodeless adjusting of motor power duty specific energy realization to flow, is suitable for small-sized aerospace craft and other miniature instrument hydraulic system.
The purpose of this utility model is achieved through the following technical solutions: a kind of microminiature outer gearing straight toothed spur gear pump, comprise the pump housing, the described pump housing mainly by middle plate and in being separately positioned on the loam cake and the base plate at plate two ends constitute, plate is provided with gear cavity in described, gear cavity is made of oil sucting cavity that communicates with each other and oil-discharging cavity, oil sucting cavity and oil-discharging cavity communicate with filler opening that is arranged on loam cake and oil outlet respectively, the driving gear and the driven gear that are outer gearing are installed between oil sucting cavity and the oil-discharging cavity, and driving gear links to each other with motor.
Described motor is installed on the base plate, process motor axis hole at base plate, the rotating shaft of motor is put in the gear cavity that is arranged on the middle plate by motor axis hole, driving gear in the gear cavity is directly installed in the rotating shaft of motor, thereby realize the control of motor, recently realize flow and oil extraction pressure are accurately regulated by adjusting the motor power duty to driving gear.
Be provided with Sealing between the rotating shaft of described base plate and motor, be used to prevent gear pump leaked liquid in work.
Described driving gear and driven gear are straight toothed spur gear.
Described motor is a DC micromotor, and operating voltage is the 12V DC electrical source, recently controls rotating speed of motor by adjusting the motor power duty.
Pass through 6 screw together between plate, loam cake and the base plate in described.
In sum, the beneficial effects of the utility model are: simple in structure, volume is little, manufacturing and easy for installation, cost is low, and overall weight is light, starting is sensitive, by adjusting the accurate electrodeless adjusting of motor power duty specific energy realization to flow, is suitable for small-sized aerospace craft miniature instrument hydraulic system.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present utility model;
Fig. 2 is a sectional view of the present utility model.
Mark and corresponding component title in the accompanying drawing: plate among the 1-; The 2-loam cake; The 3-base plate; The 4-oil sucting cavity; The 5-oil-discharging cavity; The 6-filler opening; The 7-oil outlet; The 8-driving gear; The 9-driven gear; The 10-motor; The 11-screw.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but mode of execution of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, 2, the utility model comprises the pump housing, the described pump housing mainly by middle plate 1 and in being separately positioned on the loam cake 2 and the base plate 3 at plate 1 two ends constitute, plate 1 is provided with gear cavity in described, gear cavity is made of oil sucting cavity 4 that communicates with each other and oil-discharging cavity 5, oil sucting cavity 4 and oil-discharging cavity 5 communicate with filler opening 6 that is arranged on loam cake 2 and oil outlet 7 respectively, and the driving gear 8 and the driven gear 9 that are outer gearing are installed between oil sucting cavity 4 and the oil-discharging cavity 5, and driving gear 8 links to each other with motor 10.
In order to satisfy the requirement of small-sized aerospace craft etc., whole gear pump should guarantee simple in structure and in light weight as far as possible, so, the utility model is installed in motor 10 on the base plate 3, process motor axis hole at base plate 3, the rotating shaft of motor 10 is put in the gear cavity that is arranged on the middle plate 1 by motor axis hole, driving gear 8 in the gear cavity is directly installed in the rotating shaft of motor 10, thereby realize the control of 10 pairs of driving gears 8 of motor, motor 10 boundary dimension are designed to be complementary with base plate 3, and the staff recently realizes flow and oil extraction pressure are accurately regulated by adjusting the motor power duty.
Described motor is selected DC micromotor for use, and its operating voltage is the 12V DC electrical source, recently controls the rotating speed of motor 10 by adjusting the motor power duty, and when the motor power dutycycle was 100%, the gear pump flow was a peak rate of flow; When the motor power dutycycle was 10%, gear pump can start; When the motor power dutycycle was between 10%～100%, flow and oil outlet 7 pressure can free adjustment.Under the fixing condition of motor power dutycycle and gear pump oil outlet 7, oil pump goes out oil pressure and stability of flow.
The said gear pump is simple in structure owing to it, thereby its overall weight is light, and overall weight can be less than 260 grams, can fully be applied to small-sized aerospace craft and require the hydraulic system that oil pump is in light weight, start the miniature instrument of sensitivity, energy accurate flow adjustment.
When needs said gear pump carries out work, at first open motor 10 power supplys, motor 10 drives driving gear 8 and is rotated, owing to be outer gearing between driving gear 8 and the driven gear 9, driving gear 8 will drive driven gear 9 rotations, realize two gear meshing motions, the out-of-gear zone of gear cavity internal gear is an oil sucting cavity 4, the zone that enters engagement is an oil-discharging cavity 5, take liquid to oil-discharging cavity 5 from oil sucting cavity 4 by the gear meshing motion, finally go out oil outlet 7 and discharge, the conveying that realizes liquid with boost.
As mentioned above, just can realize the utility model preferably.
Claims (8)
1. microminiature outer gearing straight toothed spur gear pump, comprise the pump housing, it is characterized in that, the described pump housing is mainly by middle plate (1), and the loam cake (2) and the base plate (3) that are separately positioned on middle plate (1) two ends constitute, plate (1) is provided with gear cavity in described, gear cavity is made of oil sucting cavity that communicates with each other (4) and oil-discharging cavity (5), oil sucting cavity (4) and oil-discharging cavity (5) communicate with filler opening that is arranged on loam cake (2) (6) and oil outlet (7) respectively, the driving gear (8) and the driven gear (9) that are outer gearing are installed between oil sucting cavity (4) and the oil-discharging cavity (5), and driving gear (8) links to each other with motor (10).
2. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 is characterized in that described motor (10) is installed on the base plate (3), and links to each other with driving gear (8) by the motor axis hole that is arranged on the base plate (3).
3. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 and 2 is characterized in that described driving gear (8) is installed in the rotating shaft of motor (10).
4. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 is characterized in that, is provided with Sealing between the rotating shaft of described base plate (3) and motor (10).
5. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 is characterized in that described driving gear (8) and driven gear (9) are straight toothed spur gear.
6. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 is characterized in that described motor (10) is a DC micromotor.
7. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 1 is characterized in that, is fixed together by screw (11) between described middle plate (1), loam cake (2) and the base plate (3).
8. a kind of microminiature outer gearing straight toothed spur gear pump according to claim 7 is characterized in that the number of described screw (11) is 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202437949U CN201599185U (en) | 2009-12-08 | 2009-12-08 | Miniature external-gearing spur-gear cylindrical gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202437949U CN201599185U (en) | 2009-12-08 | 2009-12-08 | Miniature external-gearing spur-gear cylindrical gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599185U true CN201599185U (en) | 2010-10-06 |
Family
ID=42810239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202437949U Expired - Lifetime CN201599185U (en) | 2009-12-08 | 2009-12-08 | Miniature external-gearing spur-gear cylindrical gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201599185U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963854A (en) * | 2015-07-16 | 2015-10-07 | 上海索富实业有限公司三明分公司 | Micro gear pump |
| CN105003432A (en) * | 2015-07-10 | 2015-10-28 | 成都科力夫科技有限公司 | Closing structure of straight tooth cylindrical external gear pump |
| CN111502877A (en) * | 2020-04-21 | 2020-08-07 | 四川航天中天动力装备有限责任公司 | Miniature turbojet starts electronic fuel pump and turns back formula heat radiation structure |
-
2009
- 2009-12-08 CN CN2009202437949U patent/CN201599185U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003432A (en) * | 2015-07-10 | 2015-10-28 | 成都科力夫科技有限公司 | Closing structure of straight tooth cylindrical external gear pump |
| CN104963854A (en) * | 2015-07-16 | 2015-10-07 | 上海索富实业有限公司三明分公司 | Micro gear pump |
| CN111502877A (en) * | 2020-04-21 | 2020-08-07 | 四川航天中天动力装备有限责任公司 | Miniature turbojet starts electronic fuel pump and turns back formula heat radiation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |