CN108019610B

CN108019610B - Water pump motor bearing lubricating system

Info

Publication number: CN108019610B
Application number: CN201711345419.0A
Authority: CN
Inventors: 杨帆; 吕德刚; 王吉涛; 陶大军; 王立坤; 肖芳; 林鹏
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2020-08-25
Anticipated expiration: 2037-12-14
Also published as: CN108019610A

Abstract

The invention relates to the technical field of motor bearing lubrication, in particular to a water pump motor bearing lubricating system, which comprises: the oil storage tank is connected with the oil cup through a pipeline, sufficient and constant lubrication is provided for the bearing, the excessive lubricating oil can be sent into the oil storage pipe under the condition of guaranteeing the lubrication of the bearing, the impact caused by the excessive lubricating oil is reduced, the oil is supplemented through the oil cup, the liquid level is kept stable, the oil supply is guaranteed to be unchanged, and the dynamic balance of the oil supply is further achieved.

Description

Water pump motor bearing lubricating system

Technical Field

The invention relates to the technical field of motor bearing lubrication, in particular to a water pump motor bearing lubricating system.

Background

The motor axis of rotation often needs to adopt the bearing to be connected with the casing in-process, because motor spindle's high-speed rotation often produces very big centrifugal force, lubricating oil receives the effect of centrifugal force, it is protruding often to produce middle sunken both sides in the oil bath, the cross-section is the oil level of U-shaped, often cause the bearing lubricated inhomogeneous problem in lubrication process from this, adopt among the prior art to utilize centrifugal force to make lubricating oil press close to the lateral wall, and guide lubricating oil to the mode of bearing through the pipeline, but the problem that exists at present, motor spindle's rotational speed produces centrifugal force, centrifugal force's size and rotational speed are directly proportional, lead to lubricating oil volume and rotational speed directly proportional, and the motor bearing of suction pump needs invariable lubricating oil volume to guarantee the lubrication at the in-process that motor speed constantly.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides a water pump motor bearing lubricating system, which ensures that an oil storage cavity above a bearing is kept in a full oil state by providing excessive lubricating oil for the bearing, thereby ensuring the constant lubricating oil supply amount of the water pump motor bearing.

The technical scheme of the invention is as follows:

a suction pump motor bearing lubrication system comprising: the oil-saving motor comprises a motor shaft end, a bearing, a base shaft end cover and an oil cup, wherein the lower end of the motor shaft end is of a hollow structure, a conical opening with the lower end contracted is arranged in the hollow structure, a spiral plate is arranged on the side wall of the conical opening, the outer diameter of the upper end of the spiral plate is larger than that of the lower end, the radial width of the lower end of the spiral plate is smaller than that of the upper end of the spiral plate, an oil outlet is arranged on the side wall of the motor shaft end and located above the spiral plate, an oil storage cavity is connected to an outlet of the oil outlet, the bearing is located at the lower end of the oil storage cavity, an oil storage pipe is sleeved in the spiral plate and fixedly connected with the base, an oil storage pool is arranged in the base, the motor shaft end is.

Furthermore, the lower end of the oil cup is connected with a three-way pipe, one end of the three-way pipe is connected with the oil storage pool, and the other end of the three-way pipe is connected with the oil storage pipe.

Furthermore, the lower end of the oil cup and the oil storage pool are positioned on the same horizontal plane, and the upper end of the oil cup is higher than the upper end of the oil storage pool.

Further, a radially and inwardly extending edge is arranged above the oil outlet at the inner part of the motor shaft end.

The invention has the beneficial effects that:

1) the invention is provided with the conical opening at the lower end of the motor shaft, the spiral plate is arranged in the opening, and the oil storage cavity is arranged above the bearing, so that the structure can provide excessive lubricating oil to the oil storage cavity under the rotation of the motor shaft, and the full state of the oil storage cavity is kept, thereby providing sufficient and constant lubrication for the bearing.

2) The oil storage pipe is arranged in the shaft end of the motor, so that excessive lubricating oil can be fed into the oil storage pipe under the condition of ensuring the lubrication of the bearing, and the impact caused by the excessive lubricating oil is reduced.

3) The oil storage pool is connected with the oil cup, when the shaft end of the motor rotates, a large amount of lubricating oil enters the spiral plate and the oil storage cavity to enable the liquid level of the oil storage pool to drop, the oil cup is used for supplementing the lubricating oil, the liquid level is kept stable, the oil supply is guaranteed to be unchanged, and the dynamic balance of the oil supply is achieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a water pump motor bearing lubrication system;

in the figure: 1-motor shaft end; 2-a bearing; 3-a base; 4-shaft end cap; 5-oil cup; 6-a spiral plate; 7-an oil outlet; 8-oil storage cavity; 9-oil storage pipe; and 10-oil storage pool.

Detailed Description

The invention will be described in detail below with reference to the following drawings:

referring to fig. 1, a water pump motor bearing lubrication system disclosed in this embodiment includes: the oil cup comprises a motor shaft end 1, a bearing 2, a base 3, a shaft end cover 4 and an oil cup 5, wherein the lower end of the motor shaft end 1 is of a hollow structure, a conical opening with a contracted lower end is arranged in the hollow structure, a spiral plate 6 is arranged on the side wall of the conical opening, the outer diameter of the upper end of the spiral plate 6 is larger than that of the lower end, and the radial width of the lower end of the spiral plate 6 is smaller than that of the upper end; cylindrical open-ended cross-section has the inclined plane on motor shaft end 1's lateral wall, and by the effect of centrifugal force, lubricating oil rises along the inclined plane, and spiral plate 6 on the inclined plane increases the lifting efficiency of lubricating oil, makes the lubricated oil mass who supplies with be greater than the demand of bearing, and the radial width of 6 lower extremes of spiral plate is less than the radial width of upper end, has reduced the area of contact of spiral plate 6 with the lubricating oil liquid level, has reduced the resistance of spiral plate 6 when rotatory, avoids assaulting.

An oil outlet 7 is formed in the side wall of the motor shaft end 1, the oil outlet 7 is located above the spiral plate 6, an outlet of the oil outlet 7 is connected with an oil storage cavity 8, the oil storage cavity 8 is a cavity formed by a bearing 2, the motor shaft end 1, a shaft end cover 4 and a base, the bearing 2 is located at the lower end of the oil storage cavity 8, the bearing is lubricated after the oil storage cavity is filled with lubricating oil, an oil storage pipe 9 is sleeved in the spiral plate 6, the oil storage pipe 9 is fixedly connected with the base 3, an oil storage tank 10 is arranged in the base 3, the motor shaft end 1 is inserted into the oil storage tank 10, a gap is reserved between the motor shaft end 1 and the bottom of the oil storage tank 10, and the oil storage tank.

Specifically, the lower end of the oil cup 5 is connected with a three-way pipe, one end of the three-way pipe is connected with an oil storage tank 10, and the other end of the three-way pipe is connected with an oil storage pipe 9.

Specifically, the lower end of the oil cup 5 is located on the same horizontal plane as the oil reservoir 10, and the upper end of the oil cup 5 is higher than the upper end of the oil reservoir 10.

Specifically, an edge extending inwards in the radial direction is arranged above an oil outlet 7 in the motor shaft end 1, so that lubricating oil can conveniently enter the oil storage cavity 8.

Lubricating oil in the oil storage pool 10 clings to the side wall of the motor shaft end 1 under the centrifugal action under the rotation of the motor shaft end 1 and is lifted to the oil outlet 7 under the rotation of the spiral plate 6, the oil storage cavity 8 is filled with excessive lubricating oil, the excessive lubricating oil enters the oil storage pipe 9, the oil storage pipe 9 is connected with the oil cup 5, the oil cup 5 is simultaneously connected with the oil storage pool 10, the liquid level of the oil storage pool 10 is kept unchanged, and the dynamic balance of the oil supply amount of the bearing during the circulation of the lubricating oil is further achieved.

The above embodiments are merely illustrative of the present patent and do not limit the scope of the patent, and those skilled in the art can make modifications to the parts thereof without departing from the spirit and scope of the patent.

Claims

1. Suction pump motor bearing lubrication system includes: the oil-saving motor is characterized in that the lower end of the motor shaft end (1) is of a hollow structure, a conical opening with the lower end contracting is arranged in the hollow structure, a spiral plate (6) is arranged on the side wall of the conical opening, the outer diameter of the upper end of the spiral plate (6) is larger than that of the lower end, the radial width of the lower end of the spiral plate (6) is smaller than that of the upper end, an oil outlet (7) is arranged on the side wall of the motor shaft end (1), the oil outlet (7) is positioned above the spiral plate (6), an outlet of the oil outlet (7) is connected with an oil storage cavity (8), the bearing (2) is positioned at the lower end of the oil storage cavity (8), an oil pipe (9) is sleeved in the spiral plate (6), the oil storage pipe (9) is fixedly connected with the base (3), an oil storage pool (10) is arranged in the base (3), the motor shaft end (1) is inserted into the oil storage tank (10), a gap is reserved between the motor shaft end (1) and the bottom of the oil storage tank (10), and the oil storage tank (10) is connected with an oil cup (5) through a pipeline;

the lower end of the oil cup (5) is connected with a three-way pipe, one end of the three-way pipe is connected with an oil storage tank (10), and the other end of the three-way pipe is connected with an oil storage pipe (9);

an edge extending inwards along the radial direction is arranged above an oil outlet (7) in the motor shaft end (1);

the lower end of the oil cup (5) and the oil storage pool (10) are positioned on the same horizontal plane, and the upper end of the oil cup (5) is higher than the upper end of the oil storage pool (10).