CN205503448U - But high rotational speed pressure regulating micro -gear pump - Google Patents
But high rotational speed pressure regulating micro -gear pump Download PDFInfo
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- CN205503448U CN205503448U CN201520661072.0U CN201520661072U CN205503448U CN 205503448 U CN205503448 U CN 205503448U CN 201520661072 U CN201520661072 U CN 201520661072U CN 205503448 U CN205503448 U CN 205503448U
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- gear pump
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- rotating speed
- high rotating
- adjustable pressure
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Abstract
The utility model belongs to the technical field of space flight a but high rotational speed pressure regulating micro -gear pump, including DC BRUSH MOTOR, gear pump, overflow valve, DC BRUSH MOTOR one side is provided with the gear pump, the gear pump is mainly become by oil blanket, end cover, casing, action wheel, bearing, follow dynamic wheel group, the overflow valve sets up on the casing, one side is provided with the woodruff key on the action wheel, the end cover with be provided with between the casing the cylindric lock, be provided with the gasket between end cover and the casing, the overflow valve sets up on the casing. The utility model discloses reduce the installation space of gear pump and overflow valve, satisfied the installation space's that various aircraft reduce day by day requirement.
Description
Technical field
This utility model relates to a kind of gear pump, particularly to a kind of high rotating speed adjustable pressure small gear pump, belongs to space technology field.
Background technology
Gear pump has a wide range of applications at aerospace field, provides power for the hydraulic system of various aerospace crafts, the fuel system etc. of electromotor.Along with China's Lunar Probe Project and the development of survey of deep space plan, miniaturization, integrated demand for gear pump increase the most day by day.
At present, traditional gear pump cannot meet use requirement in miniaturization on integrated, is in particular in: number of gear teeth is usually chosen in 9-13, causes pump volume the biggest, it is impossible to apply at less installing space；Gear pump is without voltage regulation function, it is therefore desirable to individually connects a relief valve pressure regulating in system, adds overall dimensions；Joint uses outer connected mode, needs to reserve single space and supplies to install, and the volume causing gear pump increases, and takies too much space；Conventional tooth wheel pump end face seal generally uses O structure, needs out O groove, increases difficulty of processing, and is difficult to when assembling regulate gear axial gap, just can determine that gear shaft is the most suitable to gap after needing test.
Utility model content
The technical problems to be solved in the utility model overcomes existing defect, thering is provided a kind of high rotating speed adjustable pressure small gear pump, overflow valve is arranged on gear pump, and number of gear teeth is set to 8, erection joint integrates with housing, can effectively solve the problem in background technology.
In order to solve above-mentioned technical problem, this utility model provides following technical scheme:
A kind of high rotating speed adjustable pressure small gear pump of this utility model, including brush direct current motor, gear pump, overflow valve, described brush direct current motor side is provided with described gear pump；Described gear pump is mainly made up of oil sealing, end cap, housing, drivewheel, bearing, driven pulley, and described overflow valve is arranged on the housing；On described drivewheel, side is provided with woodruff key；Described straight pin it is provided with between described end cap and described housing；It is provided with pad between described end cap and housing；Described overflow valve is arranged on the housing.
As a kind of optimal technical scheme of the present utility model, between described drivewheel and described driven pulley and described housing, it is provided with described bearing；Described oil sealing is arranged between described housing and described drivewheel.
As a kind of optimal technical scheme of the present utility model, described overflow valve is made up of spool, spring, valve seat, locking nut and adjustment screw, described spool is fixed on housing by described spring by spring force, and the described spring other end is supported on described adjustment screw；Described adjustment screw is threadedly secured on valve seat, and described valve seat is threadedly secured on housing；Described adjustment screw side is provided with described locking nut.
As a kind of optimal technical scheme of the present utility model, it is provided with the first O between described valve seat and described housing, between described adjustment screw and described valve seat, is provided with the second O.
As a kind of optimal technical scheme of the present utility model, the number of teeth of the gear of described gear pump is 8；Oil-feed position is provided with inclined hole.
As a kind of optimal technical scheme of the present utility model, four threaded connection holes being distributed on described end cap, four described threaded connection holes are in staggered distribution.
As a kind of optimal technical scheme of the present utility model, it is provided with connector between described housing and erection joint and is connected.Described spool face is provided with arc groove and forms passage；It is respectively arranged with aperture on described arc groove.
This utility model is reached to provide the benefit that: decrease the installing space of gear pump and overflow valve, meets the requirement of the installing space that various aircraft reduces day by day.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.
In the accompanying drawings:
Fig. 1 is the structural representation of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 2 is the structural representation of the gear pump described in this utility model embodiment；
Fig. 3 is the structural representation of the spool of a kind of high rotating speed adjustable pressure small gear described in this utility model embodiment；
Fig. 4 is the structural representation of the overflow valve of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 5 is the structural representation of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 6 is the structural representation of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 7 is the structural representation of the erection joint of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 8 is the structural representation of the gear of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Fig. 9 is the structural representation of the spool of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Figure 10 is the structural representation of the spool of a kind of high rotating speed adjustable pressure small gear pump described in this utility model embodiment；
Label in figure: 1, brush direct current motor；2, woodruff key；3, oil sealing；4, end cap；5, straight pin；6, housing；7, drivewheel；8, bearing；9, driven pulley；10, pad；11, spool；12, spring；13, valve seat；14, the first O；15, locking nut；16, screw is adjusted；17, the second O；18, threaded connection hole；19, inclined hole；20, connector；21, aperture；22, arc groove；23, passage；24, gear；25, erection joint；101, gear pump；102, overflow valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
Embodiment: as shown in Figures 1 to 10, a kind of high rotating speed adjustable pressure small gear pump of this utility model, including brush direct current motor 1, gear pump 101, overflow valve 102, described brush direct current motor 1 side is provided with described gear pump 101；Described gear pump 101 is mainly made up of oil sealing 3, end cap 4, housing 6, drivewheel 7, bearing 8, driven pulley 9, and described overflow valve 102 is arranged on described housing 6；On described drivewheel 7, side is provided with woodruff key 2；Described straight pin 5 it is provided with between described end cap 4 and described housing 6；It is provided with pad 10 between described end cap 4 and housing 6；Described overflow valve 102 is arranged on described housing 6.
It is provided with bearing 8 between drivewheel 7 and driven pulley 9 and housing 6, drivewheel 7 and the rotation of driven pulley 9 can be protected；Oil sealing 3 is arranged between housing 6 and drivewheel 7, is possible to prevent oil spill to go out.
Overflow valve 102 is made up of spool 11, spring 12, valve seat 13, locking nut 15 and adjustment screw 16, and spool 11 is fixed on housing 6 by spring 12 by spring force, forms linear sealing；Spring 12 other end is supported on adjustment screw 16；Adjusting screw 16 to be threadedly secured on valve seat 13, valve seat 13 is threadedly secured on housing 6；Adjust screw 16 side and be provided with locking nut 15 locked adjustment screw 16.
In order to increase waterproof strength of the present utility model, it is provided with the first O 14 between valve seat 13 and housing 6 and seals, be provided with the second O 17 between adjustment screw 16 and valve seat 13 and seal.
Preventing this utility model from being destroyed by external environment, the number of teeth of the gear 24 of gear pump 101 is 8, it is possible to reduce the volume of gear pump 101, reduces installing space；Oil-feed position is provided with inclined hole 19, can make UNICOM between fuel feed hole and the blind chamber of bearing, and heat is taken away formation circulation.
Four threaded connection holes 18 are distributed on end cap 4, and four threaded connection holes 18 are in staggered distribution, and are possible to prevent wrongly installed, improve installation effectiveness.
It is provided with connector 20 between housing 6 with erection joint 25 to be connected, it is not necessary to reserve separately installed space, greatly reduce volume.
In order to make fluid circulation more smooth and easy, spool 11 surface configuration has arc groove 22 and forms passage 23；Aperture 21 it is respectively arranged with on arc groove 22.
This utility model brush direct current motor 1 is connected with gear pump 101 by woodruff key 2, and end cap 4 and the housing 6 of gear pump 101 are positioned by straight pin 5；Drivewheel 7 is connected with end cap 4 and housing 6 by bearing 8, and simultaneously in order to prevent axle head leakage of oil, axle head uses oil sealing 3 to seal, and internal oil sealing, to covering dirt；Driven pulley 9 engages with drivewheel 7, and is supported on end cap 4 and housing 6 by bearing 8.In real work, brush direct current motor 1 drives drivewheel 7 to rotate, and drivewheel 7 engages with driven pulley 9, forms vacuum at oil-in, forms pressure at oil-out.Fluid is pressed into oil-in by atmospheric pressure by fuel tank；Oil-out pressure overflows back oil-in after reaching to set pressure.Overflow valve 102 is mainly made up of spool 11, spring 12, valve seat 13, locking nut 15 and adjustment screw 16.Spool 11 is seated on housing 6, forms linear sealing；Spool 11 is fixed on housing 6 by spring 12 by spring force, and spring 12 other end is supported on adjustment screw 16；Adjust screw 16 to be threadedly secured on valve seat 13, and use O 17 to seal；Valve seat 13 is threadedly secured on housing 6, and uses O 14 to seal；Locking nut 15 is used for locked adjustment screw 16.Regulation adjusts the spring force of screw 16 scalable compression spring 12, thus changes the output pressure of gear pump.Overflow valve can use above-mentioned cone valve structure, also can use other forms, such as ball-valve type overflow valve or side valve type overflow valve etc..The number of teeth of gear 24 is 8, it is possible to reduce installation volume.Overflow valve 102 is arranged on gear pump 101, has saved installation volume.Erection joint 25 integrates with housing 6, further reduces the volume shared by installation.
This utility model decreases gear pump 101 and the installing space of overflow valve 102, meets the requirement of the installing space that various aircraft reduces day by day.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (8)
1. one kind high rotating speed adjustable pressure small gear pump, it is characterized in that, including brush direct current motor (1), gear pump (101), overflow valve (102), described brush direct current motor (1) side is provided with described gear pump (101)；Described gear pump (101) is mainly made up of oil sealing (3), end cap (4), housing (6), drivewheel (7), bearing (8), driven pulley (9), and described overflow valve (102) is arranged on described housing (6)；The upper side of described drivewheel (7) is provided with woodruff key (2)；Straight pin (5) it is provided with between described end cap (4) and described housing (6)；Pad (10) it is provided with between described end cap (4) and housing (6)；Described overflow valve (102) is arranged on described housing (6).
One the most according to claim 1 high rotating speed adjustable pressure small gear pump, it is characterised in that be provided with described bearing (8) between described drivewheel (7) and described driven pulley (9) and described housing (6)；Described oil sealing (3) is arranged between described housing (6) and described drivewheel (7).
One the most according to claim 1 high rotating speed adjustable pressure small gear pump, it is characterized in that, described overflow valve (102) is made up of spool (11), spring (12), valve seat (13), locking nut (15) and adjustment screw (16), described spool (11) is fixed on housing (6) by described spring (12) by spring force, and described spring (12) other end is supported on described adjustment screw (16)；Described adjustment screw (16) is threadedly secured on valve seat (13), and described valve seat (13) is threadedly secured on housing (6)；Described adjustment screw (16) side is provided with described locking nut (15).
One the most according to claim 3 high rotating speed adjustable pressure small gear pump, it is characterized in that, it is provided with the first O (14) between described valve seat (13) and described housing (6), between described adjustment screw (16) and described valve seat (13), is provided with the second O (17).
One the most according to claim 1 high rotating speed adjustable pressure small gear pump, it is characterised in that the number of teeth of the gear (24) of described gear pump (101) is 8；Oil-feed position is provided with inclined hole (19).
One the most according to claim 1 high rotating speed adjustable pressure small gear pump, it is characterised in that four threaded connection holes (18) are distributed on described end cap (4), four described threaded connection holes (18) are in staggered distribution.
One the most according to claim 1 high rotating speed adjustable pressure small gear pump, it is characterised in that be provided with connector (20) between described housing (6) with erection joint (25) and be connected.
One the most according to claim 3 high rotating speed adjustable pressure small gear pump, it is characterised in that described spool (11) surface configuration has arc groove (22) and forms passage (23)；Aperture (21) it is respectively arranged with on described arc groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520661072.0U CN205503448U (en) | 2015-08-28 | 2015-08-28 | But high rotational speed pressure regulating micro -gear pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520661072.0U CN205503448U (en) | 2015-08-28 | 2015-08-28 | But high rotational speed pressure regulating micro -gear pump |
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| Publication Number | Publication Date |
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| CN205503448U true CN205503448U (en) | 2016-08-24 |
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| CN201520661072.0U Active CN205503448U (en) | 2015-08-28 | 2015-08-28 | But high rotational speed pressure regulating micro -gear pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN111878387A (en) * | 2020-07-14 | 2020-11-03 | 河南航天液压气动技术有限公司 | Gear pump |
-
2015
- 2015-08-28 CN CN201520661072.0U patent/CN205503448U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN111878387A (en) * | 2020-07-14 | 2020-11-03 | 河南航天液压气动技术有限公司 | Gear pump |
| CN111878387B (en) * | 2020-07-14 | 2022-08-12 | 河南航天液压气动技术有限公司 | Gear pump |
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