CN211343330U

CN211343330U - Submerged gear oil pump

Info

Publication number: CN211343330U
Application number: CN201922451238.7U
Authority: CN
Inventors: 郑航
Original assignee: Ningbo Jiecheng Electromechanical Equipment Engineering Co ltd
Current assignee: Ningbo Jiecheng Electromechanical Equipment Engineering Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-25
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a dive gear oil pump, including oil pump body and motor element, motor element fixes at the oil pump originally internally, is equipped with the oil inlet on the oil pump body, is equipped with the filter screen on the oil pump body, this internal pressure oil extraction subassembly that still is equipped with of oil pump, press oil extraction subassembly and motor element coaxial coupling, oil inlet and oil-out are located respectively and press the axial both sides of oil extraction subassembly. The oil pump is of a submerged type, the oil pressing and discharging assembly in the oil pump is mounted on the motor shaft, the structure is simplified, the structure is more compact and simpler, the motor shaft is ensured to transmit torque to the oil pressing and discharging assembly more accurately, the structure is more compact and simpler, the weight is light, and the size is small.

Description

Submerged gear oil pump

Technical Field

The utility model relates to a fluid pump technical field, concretely relates to dive gear oil pump.

Background

The submersible pump needs to be immersed in fluid when in operation, and the heat dissipation problem of the motor assembly of the submersible pump is not negligible. In the prior art, the heat dissipation by means of the shell is generally considered to meet the requirement, however, the shell is relatively closed and is generally made of a material with poor heat conductivity, so that heat generated by the motor assembly cannot be well discharged in time, the motor is possibly overheated, potential safety hazards are caused, or the motor efficiency is influenced.

The gear oil pump has a compact structure and good self-suction performance, so that liquid does not need to be filled before the pump is started every time, and the lubrication of the gear oil pump is automatically achieved by the conveyed liquid, so that the gear oil pump does not need to be additionally added with lubricating oil in daily work, and is widely used. In addition, although the existing gear pump is compact in structure, the gear pump is connected with a motor through a belt wheel or a coupling, deviation can be generated in the torque transmission process, and the oil output is inaccurate.

Disclosure of Invention

The utility model aims at providing a submerged gear oil pump of the great liquid of transport consistency that can be smooth and easy that exists to above-mentioned prior art.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides a dive gear oil pump, includes oil pump body and motor element, its characterized in that: the motor assembly is fixed in the oil pump body, be equipped with oil inlet and oil-out on the oil pump body, be equipped with the filter screen on the oil pump body, this internal pressure oil extraction subassembly that still is equipped with of oil pump, press oil extraction subassembly and motor assembly coaxial coupling, oil inlet and oil-out are located respectively presses the axial both sides of oil extraction subassembly.

Further, the motor assembly comprises a stator, a rotor and a motor shaft supporting the rotor and rotating along with the rotor, the front end and the rear end of the motor shaft are supported through rolling bearings, and the stator and the rotor form a motor winding.

Furthermore, the oil pump body is respectively connected with a front pump cover, a connected shell and a rear pump cover along the axial direction, the oil inlet is located on the peripheral surface of the connected shell, the oil outlet is located on the front pump cover, the axial direction of the oil outlet is parallel to the motor shaft, the oil outlet is located on the rear end surface of the front pump cover, and a filter screen assembly is arranged in the middle of the rear pump cover.

Furthermore, the oil pressing and discharging assembly comprises an internal gear and an external gear which are internally meshed, the internal gear and the external gear have a tooth difference, the oil pressing and discharging assembly is sleeved on an output shaft of a motor shaft and is connected with the output shaft through a key, and when the internal gear and the external gear are separated from each other, oil is absorbed; and when the internal gear and the external gear are meshed with each other, oil is discharged.

Furthermore, a vertical connecting channel is arranged between an oil outlet and an oil outlet of the oil pressing and discharging assembly, the upper end of the connecting channel is open and sealed through a plug and a sealing ring, and a pressure relief valve assembly can be installed in the connecting channel as required.

Furthermore, a wiring terminal is arranged at the front end of the front pump cover and connected with a power line of the motor stator.

Compared with the prior art, the method has the advantages that: the utility model discloses an oil pump is the formula of diving, through submergence in refrigerator lubricating oil, can cool off the winding fast, and the oily oil extraction subassembly of pressing in the oil pump is installed on the motor shaft, has more simplified the structure, and the structure is compacter simple, and the quality is light, and the size is little, ensures that the motor shaft transmits the moment of torsion for pressing oily oil extraction subassembly more accurate, and the gear syntropy is rotatory, and relative slip speed is little, and wearing and tearing are few, have prolonged the life-span, have reduced the noise.

Drawings

The invention is further illustrated with reference to the following figures and examples:

fig. 1 is a sectional view of a submersible gear oil pump of the present embodiment;

FIG. 2 is a cross-sectional view of the pressure relief valve assembly of the present embodiment;

fig. 3 is a schematic structural diagram of the oil pressing and discharging assembly in the present embodiment.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

The first embodiment is as follows:

see fig. 1-3 for: the embodiment provides a submerged gear oil pump, including oil pump body 100 and motor element 200, motor element 200 fixes in oil pump body 100, is equipped with oil inlet 110 and oil-out 120 on oil pump body 100, is equipped with filter screen 300 on the oil pump body, still is equipped with in oil pump body 100 and presses oil and arrange oil subassembly 400, presses oil and arranges oil subassembly 400 and motor element 200 coaxial coupling, and oil inlet 110 and oil-out 120 are located respectively and press the axial both sides of oil and arrange oil subassembly 400.

When oil pump submergence and oil groove in, can filter the oil that gets into the inside lubricated antifriction bearing that is used for of oil pump through the filter screen and probably harm the impurity of this part in the oil, guarantee the cleanness of oil, extension motor bearing life-span.

Specifically, the motor assembly 200 includes a stator 210, a rotor 220, and a motor shaft 230 supporting the rotor 220 and rotating together with the rotor, the front and rear ends of the motor shaft 230 being supported by rolling bearings 240, the stator 210 and the rotor 220 forming a motor winding.

Specifically, the oil pump body 100 is respectively connected with the front pump cover 130, the connected housing 140 and the rear pump cover 150 along the axial direction, the oil inlet 110 is located on the circumferential surface of the connected housing 140, the oil outlet 120 is located on the front pump cover 130, the axial direction of the oil outlet 120 is parallel to the motor shaft 230, the oil outlet 120 is located on the rear end surface of the front pump cover 130, the filter screen assembly 300 'is arranged in the middle of the rear pump cover 150, lubricating oil can penetrate into the connected housing 140 from the gap of the filter screen assembly 300' of the rear pump cover 150, the heat of the rotor 220 can be directly taken away by the oil of the part, the heat dissipation efficiency is high, the motor.

Specifically, the oil pressing and discharging assembly 400 includes an inner gear 410 and an outer gear 420 which are internally engaged, the inner gear 410 and the outer gear 420 have a tooth difference, as shown in fig. 3, generally, the inner gear 410 is six teeth, the outer gear 420 is seven teeth, and a certain eccentric amount exists, the oil pressing and discharging assembly 400 is sleeved on the output front end of the motor shaft 230 and is slidably supported by a bearing sleeve 900, and when the inner gear 410 and the outer gear 420 are separated from each other, negative pressure is generated to suck oil; when the inner gear 410 and the outer gear 420 are meshed with each other, oil is extruded and output, the volume change of a space formed by the meshing of the two gears circulates once, fluid suction and fluid discharge are realized once respectively, the gears are cast by powder metallurgy, and the gears are stable in characteristics, high in hardness and wear resistance and easy to form.

Specifically, a vertical connecting channel 131 is arranged between an oil outlet and an oil outlet 120 of the oil pressing and oil discharging assembly 400, an upper end opening of the connecting channel 131 is sealed by a plug 500 and a sealing element 600, and a pressure relief valve assembly 700 can be installed in the connecting channel 131 as required.

Specifically, as shown in fig. 2, the relief valve assembly 700 includes an adjusting valve body 710, the adjusting valve body 710 fixes a valve body plunger 720, a spring 730 is disposed in the adjusting valve body 710, an adjusting post 740 passes through the valve body plunger 720, the adjusting post 740 is fixed with the valve body plunger 720 through a nut 750, and an adjusting nut 760 is connected to an outer end of the adjusting post 740; in addition, in order to keep a good sealing state of the pressure relief valve assembly 700 during operation, an inner sealing ring 770 is arranged between the inner end part of the adjusting column rod 740 and the inner wall of the valve body plunger 720; the outer sealing ring 780 is arranged outside the valve body plunger 720, the spring expansion amount in the valve body can be adjusted by rotating the adjusting nut 760, and when the oil pressure is high, the spring is compressed, so that the oil flows through the relief valve from the oil discharge port of the oil pressing and discharging assembly 400 to the oil discharge port 790, and the pressure of the oil discharge port is always set.

Specifically, a connection terminal 800 is led out from the front end of the front pump cover 130, and the connection terminal 800 is connected with a power supply of the motor stator 210.

The oil pump provided by the embodiment is of a submerged type, can form a sealed whole with an oil tank, the motor winding is arranged in the oil pump body, runs in a mixed medium of lubricating oil of a refrigerating machine and refrigerants such as R-22 and R-134A, and the motor winding is cooled by the medium, so that the safety of the motor winding is ensured. The oil pressing and discharging assembly in the oil pump is installed on the motor shaft, the structure is simplified, the structure is more compact and simple, the motor shaft is ensured to transmit torque to the oil pressing and discharging assembly more accurately, the structure is more compact and simple, the weight is light, the size is small, the motor shaft is ensured to transmit the torque to the oil pressing and discharging assembly more accurately, the gears rotate in the same direction, the relative sliding speed is small, abrasion is less, the service life is prolonged, the noise is reduced, the oil outlet is positioned at the rear end of the oil pump, and a pipe thread or flange structure connecting system pipeline can be adopted.

Claims

1. The utility model provides a dive gear oil pump, includes oil pump body and motor element, its characterized in that: the motor assembly is fixed in the oil pump body, be equipped with oil inlet and oil-out on the oil pump body, be equipped with the filter screen on the oil pump body, this internal pressure oil extraction subassembly that still is equipped with of oil pump, press oil extraction subassembly and motor assembly coaxial coupling, oil inlet and oil-out are located respectively presses the axial both sides of oil extraction subassembly.

2. A submersible gear oil pump as defined in claim 1, wherein: the motor assembly comprises a stator, a rotor and a motor shaft, wherein the motor shaft supports the rotor and rotates along with the rotor, the front end and the rear end of the motor shaft are supported through rolling bearings, and the stator and the rotor form a motor winding.

3. A submersible gear oil pump as set forth in claim 2, wherein: the oil pump body is connected with preceding pump cover, disjunctor casing and back pump cover respectively along the axial, the oil inlet is located the global of disjunctor casing, the oil-out is located preceding pump cover, and the axial of oil-out and motor shaft parallel arrangement, and the oil-out is located the rear end face of preceding pump cover, be equipped with the filter screen subassembly in the middle of the back pump cover.

4. A submersible gear oil pump as set forth in claim 3, wherein: the oil pressing and discharging assembly comprises an inner gear and an outer gear which are internally meshed, a tooth difference exists between the inner gear and the outer gear, the oil pressing and discharging assembly is sleeved on an output shaft of a motor shaft and is connected with the output shaft through a key, and when the inner gear and the outer gear are separated from each other, oil is absorbed; and when the internal gear and the external gear are meshed with each other, oil is discharged.

5. A submersible gear oil pump as set forth in claim 3, wherein: the oil pressing and oil discharging device is characterized in that a vertical connecting channel is arranged between an oil discharging port and an oil outlet of the oil pressing and oil discharging assembly, the upper end of the connecting channel is opened and sealed through a plug and a sealing ring, and a pressure relief valve assembly can be installed in the connecting channel as required.

6. A submersible gear oil pump as set forth in claim 3, wherein: and a wiring terminal is arranged at the front end of the front pump cover and is connected with a power line of the motor stator.