CN110500257A - A kind of non-oil-immersed type axial plunger electric-motor pump of air gap - Google Patents
A kind of non-oil-immersed type axial plunger electric-motor pump of air gap Download PDFInfo
- Publication number
- CN110500257A CN110500257A CN201910876511.2A CN201910876511A CN110500257A CN 110500257 A CN110500257 A CN 110500257A CN 201910876511 A CN201910876511 A CN 201910876511A CN 110500257 A CN110500257 A CN 110500257A
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- China
- Prior art keywords
- pump
- oil
- seal
- motor
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
- F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
A kind of non-oil-immersed type axial plunger electric-motor pump of air gap, it is motor, axial plunger pump and orifice-plate type centrifugal pump it is integrated, composite shaft (6) has merged motor center axis, plunger pump main shaft and orifice plate centrifugal pump, not only there is transmitting power, there are also oil liquid circulations, strengthen the function of heat loss through convection and additional mechanical supercharging, it is integrated with rotor (15) hot charging, the inside of shell (17) and inner end cap (12) is supported on by first bearing (18) and second bearing (10), both ends are sealed by first seal (20) and second seal (9), prevent hydraulic oil from entering in the air gap between motor stator (14) and rotor (15), the contactless labyrinth seal structure that the program uses, avoid the extra friction loss that sealing ring is contacted with axis and generated, further improve the effect of electric-motor pump Rate, plunger pump pump core (5) are connect with composite shaft (6) by spline, are supported in pump core seat (3) by 3rd bearing (4).
Description
Technical field
The present invention relates to hydraulic electric motor pump more particularly to motors and the integrated hydraulic electric motor pump of axial plunger pump.
Background technique
Hydraulic electric motor pump is electric hydaulic power unit of new generation, has the excellent properties such as mute, energy saving, greenization, can
It is widely used in hydraulic system as hydraulic power unit.There are different knots in the international corporations such as EATON, the Japan YUKEN in the U.S.
Also there are related patents authorization in the matured product of structure and function, domestic scientific research institutes, the one kind applied such as BJ University of Aeronautics & Astronautics
The electro-hydraulic pump (CN106089624A) of plunger type, by analysis it can be found that either product patent, although eliminating motor
Cooling fan and shaft coupling reduce noise to a certain extent, but motor stator and rotor are immersed in oil liquid, electric-motor pump
Viscous friction loss is inevitably generated in the course of work, volumetric efficiency is lower, when working under higher rotation speed, however it remains
The problem of hydraulic pump oil suction deficiency.In this regard, a kind of non-oil-immersed type blade pump for hydraulic engine of air gap of Lanzhou University of Science & Technology's application
(CN103047134A), the program avoids motor stator and rotor in structure and is immersed in oil liquid, and composite shaft has been internally integrated hole
Board-like centrifugal pump is used to additional mechanical supercharging, guarantees the abundant oil suction of main pump.
Patent (CN103047134A) technical disadvantages are analyzed, and the dynamic sealing in the program uses lip-type packing, are belonged to and are connect
With sealing ring contact surface fretting wear occurs for touch sealing, axis during operation, generates energy loss, it is also possible to generate abrasive material
It into main pump, influences main pump and works, particularly evident under high revolving speed, in addition integrated vane pump cannot be compared with work under the slow-speed of revolution
Make, the application field of electric-motor pump is restricted.
Summary of the invention
The object of the present invention is to provide a kind of non-oil-immersed type axial plunger electric-motor pumps of air gap.
The present invention is a kind of non-oil-immersed type axial plunger electric-motor pump of air gap, including oil outlet gland 1, pump core seat 3, plunger pump
Pump core 5, composite shaft 6, stator 14, rotor 15, shell 17, inner end cap 12 and outer end cap 11, wherein composite shaft 6 and 15 hot charging of rotor
It is integrated, the inside of shell 17 and inner end cap 12 is supported on by first bearing 18 and second bearing 10, both ends are by first seal
20 and second seal 9 realize non-contacting seal, plunger pump pump core 5 is connect by spline with composite shaft 6, by 3rd bearing 4
It is supported in pump core seat 3, the piston shoes in pump core 5 are pressed on the swash plate 1b on oil outlet gland 1.
Usefulness of the present invention is: a kind of non-oil-immersed type axial plunger electric-motor pump of air gap is integrated with axial columns
Plug pump, so that the power source structure that motor is combined with plunger pump is greatly simplified, orifice plate centrifugal pump is plunger pump additional mechanical supercharging, enhancing
Plunger pump oil absorbency can guarantee that plunger pump oil suction is abundant at high revolving speed (3000r/min), reduce because of oil suction deficiency
Caused noise improves the volumetric efficiency of electric-motor pump, using contactless labyrinth seal structure, works under higher rotation speed
When, oil liquid is acted on by centrifugal force always, in addition sealing element two sides pressure difference is smaller, forms one in the gap between axis and sealing element
Layer oil film, more preferably, when working under the slow-speed of revolution or when shutting down, oil liquid generates micro leakage by gap to sealing effect, not shadow
It rings and uses.The extra friction loss for contacting and generating with axis This solution avoids sealing ring, further improves the total of electric-motor pump
Efficiency.
Detailed description of the invention
Fig. 1 is structure principle chart of the invention, and the main view of Fig. 2 pump core seat 3, Fig. 3 is the left view of Fig. 2, Fig. 4 Fig. 1
Partial enlarged view, the main view of Fig. 5 oil outlet gland 1, appended drawing reference and corresponding title are as follows: oil outlet gland 1, third positioning
Pin hole 1a, swash plate 1b, seal groove 1c, oil outlet 1d, positioning pin 2, pump core seat 3, sealing element mounting groove 3a, inlet port 3b, sliding
Bearing mounting hole 3c, oil discharge outlet 3d, the first dowel hole 3e, pump core mounting hole 3f, bearing mounting hole 3g, oil leak hole 3h, second
Dowel hole 3i, bearing 4, pump core 5, composite shaft 6, oilhole 6a, sliding bearing 7, sealing ring baffle 8, second seal 9, second
Bearing 10, rear end cap 11, inner end cap 12, terminal box 13, stator 14, rotor 15, lifting lug 16, shell 17, first bearing 18, L gear
Circle 19, first seal 20.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Fig. 1 ~ Fig. 5, the present invention is a kind of non-oil-immersed type axial plunger electric-motor pump of air gap, including oil outlet gland 1,
Pump core seat 3, plunger pump pump core 5, composite shaft 6, stator 14, rotor 15, shell 17, inner end cap 12 and outer end cap 11, wherein compound
Axis 6 is integrated with 15 hot charging of rotor, is supported on the inside of shell 17 and inner end cap 12 by first bearing 18 and second bearing 10, and two
Non-contacting seal is realized by first seal 20 and second seal 9 in end, and plunger pump pump core 5 is connected by spline and composite shaft 6
It connects, is supported in pump core seat 3 by 3rd bearing 4, the piston shoes in pump core 5 are pressed on the swash plate 1b on oil outlet gland 1.
The non-oil-immersed type axial plunger electric-motor pump of air gap of the invention is motor, axial plunger pump and orifice-plate type centrifugal pump
It is integrated, composite shaft 6 has merged motor center axis, plunger pump main shaft and orifice plate centrifugal pump, not only has transmitting dynamic
Power, there are also oil liquid circulations, the function of reinforcing heat loss through convection and additional mechanical supercharging, are integrated with 15 hot charging of rotor, by first
Bearing 18 and second bearing 10 are supported on the inside of shell 17 and inner end cap 12, and both ends are by first seal 20 and second seal
9 sealings, prevent hydraulic oil from entering in the air gap between motor stator 14 and rotor 15, and the contactless labyrinth that the program uses is close
Seal structure avoids the extra friction loss that sealing ring is contacted with axis and generated, further improves the efficiency of electric-motor pump, plunger
Pump pump core 5 is connect by spline with composite shaft 6, is supported in pump core seat 3 by 3rd bearing 4, and this plug-in structure is simple, peace
Dress and replacement components are convenient.
As shown in Figure 1, Figure 2, Figure 3 shows, the pump core seat 3 is equipped with sealing element mounting groove 3a, inlet port 3b, sliding bearing peace
Fill hole 3c, oil discharge outlet 3d, the first dowel hole 3e, pump core mounting hole 3f, bearing mounting hole 3g, oil leak hole 3h and the second positioning pin
Hole 3i, wherein oil leak hole 3h is communicated with the drain tap on shell 17.
As shown in Figure 1, Figure 2, Figure 4 shows, the first seal 20 and second seal 9 are contactless labyrinth seal, the
One sealing element 20 is mounted on pump core seat 3, and the other side is positioned by L retaining ring 19, and the oilhole 6a face first opened up in composite shaft 6 is close
Labyrinth inside sealing 20.
As shown in Fig. 1, Fig. 3, Fig. 5, it is 18 ° of swash plate 1b that the oil outlet gland 1, which is integrated with inclination angle, which is provided with the
Three dowel hole 1a, high pressure sealing slot 1c and oil outlet 1d, wherein oil outlet 1d is communicated with the oil discharge outlet 3d that pump core seat 3 is equipped with.
The course of work of the invention is as follows: after filling oil inside electric-motor pump and being vented, it is powered to 14 coil of stator, rotor
15 drive composite shaft 6 to make rotating motion under the driving of electromagnetic torque, and composite shaft 6 drives plunger pump core 5 to rotate by spline, preceding
Setting orifice plate centrifugal pump is 5 additional mechanical supercharging of plunger pump core, and oil liquid is forced to enter 5 inlet port of plunger pump core, and piston reciprocation movement is completed
It inhales, oil extraction work, plunger pump core 5 rubs by-produced Leakage Energy by unloading oilhole 3h discharge on pump core seat 3.
Claims (4)
1. a kind of non-oil-immersed type axial plunger electric-motor pump of air gap, including oil outlet gland (1), pump core seat (3), plunger pump pump core
(5), composite shaft (6), stator (14), rotor (15), shell (17), inner end cap (12) and outer end cap (11), it is characterised in that multiple
Sympodium (6) is integrated with rotor (15) hot charging, is supported on shell (17) and inner end by first bearing (18) and second bearing (10)
The inside of (12) is covered, non-contacting seal, plunger pump pump core are realized by first seal (20) and second seal (9) in both ends
(5) it is connect, is supported in pump core seat (3) by 3rd bearing (4), the piston shoes in pump core (5) are pressed in composite shaft (6) by spline
On swash plate (1b) on oil outlet gland (1).
2. the non-oil-immersed type axial plunger electric-motor pump of air gap according to claim 1, it is characterised in that: the pump core seat (3)
It is equipped with sealing element mounting groove (3a), inlet port (3b), sliding bearing mounting hole (3c), oil discharge outlet (3d), the first dowel hole
(3e), pump core mounting hole (3f), bearing mounting hole (3g), oil leak hole (3h) and the second dowel hole (3i), wherein oil leak hole
(3h) is communicated with the drain tap on shell (17).
3. the non-oil-immersed type axial plunger electric-motor pump of air gap according to claim 1, it is characterised in that: the first seal
(20) and second seal (9) is contactless labyrinth seal, and first seal (20) is mounted on pump core seat (3), the other side
It is positioned by L retaining ring (19), the internal labyrinth of hole (6a) the face first seal (20) opened up in composite shaft (6).
4. the non-oil-immersed type axial plunger electric-motor pump of air gap according to claim 1, it is characterised in that: the oil outlet pressure
It is 18 ° of swash plate (1b) that lid (1), which is integrated with inclination angle, which is provided with third dowel hole (1a), high pressure sealing slot (1c) and fuel-displaced
Mouth (1d), wherein oil outlet (1d) is communicated with the oil discharge outlet (3d) that pump core seat (3) is equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876511.2A CN110500257A (en) | 2019-09-17 | 2019-09-17 | A kind of non-oil-immersed type axial plunger electric-motor pump of air gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876511.2A CN110500257A (en) | 2019-09-17 | 2019-09-17 | A kind of non-oil-immersed type axial plunger electric-motor pump of air gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110500257A true CN110500257A (en) | 2019-11-26 |
Family
ID=68592003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910876511.2A Pending CN110500257A (en) | 2019-09-17 | 2019-09-17 | A kind of non-oil-immersed type axial plunger electric-motor pump of air gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110500257A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946580A (en) * | 2020-08-25 | 2020-11-17 | 兰州理工大学 | Digital variable hydraulic motor radial plunger pump |
| CN117989145A (en) * | 2024-01-17 | 2024-05-07 | 兰州理工大学 | Motor pump with non-positive displacement pump combined with supercharging function |
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| CA2082038A1 (en) * | 1991-11-04 | 1993-05-05 | Otto P. Langosch | Electric motor driven hydraulic apparatus with an integrated pump |
| JPH10148192A (en) * | 1996-11-19 | 1998-06-02 | Hitachi Ltd | Oil free screw compressor |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946580A (en) * | 2020-08-25 | 2020-11-17 | 兰州理工大学 | Digital variable hydraulic motor radial plunger pump |
| CN111946580B (en) * | 2020-08-25 | 2021-04-09 | 兰州理工大学 | Digital variable hydraulic motor radial plunger pump |
| CN117989145A (en) * | 2024-01-17 | 2024-05-07 | 兰州理工大学 | Motor pump with non-positive displacement pump combined with supercharging function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20191126 |