CN106523352A

CN106523352A - Trace oil pump

Info

Publication number: CN106523352A
Application number: CN201611044609.4A
Authority: CN
Inventors: 赵火英
Original assignee: 周志花
Current assignee: Daqing Hua Yu petroleum machinery Manufacturing Co., Ltd
Priority date: 2016-11-22
Filing date: 2016-11-22
Publication date: 2017-03-22
Anticipated expiration: 2036-11-22
Also published as: CN106523352B

Abstract

The invention discloses a trace oil pump which comprises a stator and a rotor, wherein a central through hole is formed in the stator; the rotor is in rotatable fit into the central through hole of the stator; the trace oil pump is characterized in that a plurality of oil slots are formed in the inner side wall of the stator in a spacing manner along the circumferential direction; when the rotor rotates, the outer side wall of the rotor drives oil liquid on the surface layers of the oil slots to flow along the circumferential direction of the rotor; each oil slot is divided into a high-pressure region and a low-pressure region along the flowing direction of the oil liquid on the surface layers; first oil pipes communicating with the high-pressure regions of the oil slots and second oil pipes communicating with the low-pressure regions of the oil slots are arranged in the stator; each first oil pipe communicates with one end, which is away from each oil slot, of each second oil pipe; an oil feeding pipe communicating with the high-pressure regions is arranged on the stator; and an oil discharging pipe communicating with the low-pressure regions is arranged on the stator. According to the trace oil pump provided by the invention, the discharge oil volume can be precisely controlled; and furthermore, no extra metering pump is needed, so that the cost of equipment is low.

Description

A kind of micro oil pump

Technical field

The present invention relates to the technical field of oil pump, a kind of specifically micro oil pump.

Background technology

Adopting blade shape or screw form existing oil pump, although the oil mass of pumping is big, but which is for once more The error of the fluid amount that pumping is produced is big, it is impossible to realize Precise control, therefore little for some fluid quantity delivereds, but oily The equipment that the required precision of liquid quantity delivered is high can only be quantitatively controlled by means of extra dosing pump.

The content of the invention

The technical problem to be solved is：A kind of micro oil pump is provided, its output oil mass can with precise control, The little precision equipment of error is required suitable for oil mass, and without by extra dosing pump, therefore equipment cost is little.

The technical solution used in the present invention is：A kind of micro oil pump is provided, it includes stator and rotor, and stator is provided with Central through hole, rotor are rotatably assorted in the central through hole of stator, it is characterised in that：The lateral wall of rotor and the medial wall of stator Between gap coordinate, and it is on the medial wall of the stator circumferentially spaced be provided with multiple oil grooves, rotor when the rotor is turning Lateral wall drives the fluid on oil groove top layer along the circumferential flow of rotor, is divided into along the flow direction of top layer fluid in the oil groove Higher-pressure region and low-pressure area, the oil pressure of higher-pressure region are provided with the stator and are connected with the higher-pressure region of oil groove more than the oil pressure of low-pressure area The first logical oil pipe and the second oil pipe being connected with the low-pressure area of oil groove, first oil pipe and the second oil pipe are away from oil groove One end is connected, and the stator is provided with the oil inlet pipe being connected with higher-pressure region, and the caliber of oil inlet pipe is less than the pipe of the first oil pipe Footpath, the stator are provided with the flowline being connected with low-pressure area, the caliber of flowline less than oil inlet pipe caliber and less than the The caliber of two oil pipes.

Whole oil grooves are uniformly distributed along the circumference of stator, and are provided with an overflow launder, overflow between two oil groove of arbitrary neighborhood Groove any one end vertically extends to the end face through stator.

First oil pipe and the second oil pipe are connected away from one end of oil groove and refer to, corresponding to each on the lateral wall of stator The position of oil groove is respectively equipped with an annular groove, is arranged with sleeve, medial wall and the annular groove of sleeve pipe outside the stator Inner surface surrounds to be formed with a closed chamber, and chamber two ends are connected with the first oil pipe and the second oil pipe respectively.

After above structure, a kind of micro oil pump of the present invention has advantages below compared with prior art：First, lead to The rotation of rotor and stator is crossed, and fluid higher-pressure region is formed by making the oil groove on stator medial wall, by adjusting the rotating speed of rotor Can realize that the fluid of higher-pressure region, in nonlinear increase, realizes Precise control, secondly, by the first oil pipe and the second oil pipe Backflow effect, the oil pressure of higher-pressure region can be reduced, so as to reduce the rotating speed of rotor and the ratio of higher-pressure region oil pressure, that is, reduce turn The oil pressure changing value that subunit rotating speed changes.

Description of the drawings

Fig. 1 is the structural representation of a kind of micro oil pump of the present invention.

Fig. 2 is the close-up schematic view in " A " region in Fig. 1.

Fig. 3 is the operation principle schematic diagram of single sump portion in Fig. 2.

Wherein, 1, stator, 2, rotor, 3, oil groove, 4, higher-pressure region, 5, low-pressure area, the 6, first oil pipe, the 7, second oil pipe, 8, Oil inlet pipe, 9, flowline, 10, overflow launder, 11, annular groove, 12, sleeve pipe.

Specific embodiment

The invention will be further described with reference to the accompanying drawings and detailed description.

The present invention provides a kind of micro oil pump, and it includes stator 1 and rotor 2, and stator 1 is provided with central through hole, 2 turns of rotor It is actively tied in the central through hole of stator 1, it is characterised in that：Between the medial wall of the lateral wall of rotor 2 and stator 1, gap is matched somebody with somebody Close, and it is circumferentially spaced on the medial wall of the stator 1 be provided with multiple oil grooves 3, the lateral wall of rotor 2 when rotor 2 is rotated Drive the fluid on 3 top layer of oil groove along the circumferential flow of rotor 2, in the oil groove 3, height is divided into along the flow direction of top layer fluid Nip 4 and low-pressure area 5, the oil pressure of higher-pressure region 4 are provided with the higher-pressure region 4 with oil groove 3 more than the oil pressure of low-pressure area 5 in the stator 1 The first oil pipe 6 being connected and the second oil pipe 7 being connected with the low-pressure area 5 of oil groove 3, first oil pipe 6 and the second oil pipe 7 It is connected away from one end of oil groove 3, the stator 1 is provided with the oil inlet pipe 8 being connected with higher-pressure region 4, the caliber of oil inlet pipe 8 is little In the caliber of the first oil pipe 6, the stator 1 is provided with the flowline 9 being connected with low-pressure area 5, the caliber of flowline 9 be less than into The caliber of oil pipe 8 and the caliber less than the second oil pipe 7.

Whole oil grooves 3 are uniformly distributed along the circumference of stator 1, and are provided with an overflow launder 10 between two oil groove 3 of arbitrary neighborhood, Any one end vertically of overflow launder 10 extends to the end face through stator 1.

First oil pipe 6 is connected away from one end of oil groove 3 with the second oil pipe 7 and refers to, correspondence on the lateral wall of stator 1 An annular groove 11 is respectively equipped with the position of each oil groove 3, outside the stator 1, sleeve 12, the medial wall of sleeve pipe 12 is arranged with Surround to be formed with a closed chamber with the inner surface of annular groove, chamber two ends respectively with 7 phase of the first oil pipe 6 and the second oil pipe Connection.

Above preferred embodiments of the present invention are described, but are not to be construed as limiting the scope of the invention.This Bright to be not only limited to above example, its concrete structure allows to change, all institutes in the protection domain of demand for independence of the present invention The various change of work is within the scope of the present invention.

Claims

1. a kind of micro oil pump, it includes stator (1) and rotor (2), and stator (1) is provided with central through hole, and rotor (2) is rotated matches somebody with somebody In central through hole together in stator (1), it is characterised in that：Between the lateral wall of rotor (2) and the medial wall of stator (1), gap is matched somebody with somebody Close, and it is circumferentially spaced on the medial wall of the stator (1) be provided with multiple oil grooves (3), the rotor (2) when rotor (2) is rotated Lateral wall drive the fluid on oil groove (3) top layer along the circumferential flow of rotor (2), in oil groove (3) along top layer fluid stream Dynamic direction is divided into higher-pressure region (4) and low-pressure area (5), and the oil pressure of higher-pressure region (4) is more than the oil pressure of low-pressure area (5), the stator (1) the first oil pipe (6) for being connected with the higher-pressure region (4) of oil groove (3) is provided with and is connected with the low-pressure area (5) of oil groove (3) The second oil pipe (7), the one end of the first oil pipe (6) with the second oil pipe (7) away from oil groove (3) is connected, stator (1) The oil inlet pipe (8) being connected with higher-pressure region (4) is provided with, the caliber of oil inlet pipe (8) is less than the caliber of the first oil pipe (6), described Stator (1) is provided with the flowline (9) being connected with low-pressure area (5), and the caliber of flowline (9) is less than the caliber of oil inlet pipe (8) And less than the caliber of the second oil pipe (7).

2. a kind of micro oil pump according to claim 1, it is characterised in that：Circumference of whole oil grooves (3) along stator (1) It is uniformly distributed, and between two oil grooves of arbitrary neighborhood (3), is provided with an overflow launder (10), overflow launder (10) any one end vertically is prolonged Extend the end face through stator (1).

3. a kind of micro oil pump according to claim 1, it is characterised in that：First oil pipe (6) and the second oil pipe (7) It is connected and refers to away from one end of oil groove (3), the position on the lateral wall of stator (1) corresponding to each oil groove (3) is respectively equipped with one Sleeve (12), the medial wall of sleeve pipe (12) and the inner surface of annular groove is arranged with outside annular groove (11), stator (1) Surround to be formed with a closed chamber, chamber two ends are connected with the first oil pipe (6) and the second oil pipe (7) respectively.