CN212774760U

CN212774760U - Coaxial assembly structure of motor and pump body

Info

Publication number: CN212774760U
Application number: CN202021625721.9U
Authority: CN
Inventors: 陈豪
Original assignee: Glanster Mechanical Equipment Guangdong Co ltd
Current assignee: Glanster Mechanical Equipment Guangdong Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-03-23
Anticipated expiration: 2030-08-07

Abstract

The utility model relates to a coaxial assembly structure of a motor and a pump body, wherein the pump body is provided with a pump shell, a first end cover and a second end cover; the motor comprises a motor shell and a motor flange end cover, wherein a first extending part is formed on one side of a bearing mounting part of a first end cover, a plurality of first positioning holes are formed in the first extending part, and the end surface of the first extending part is a first positioning surface; a second extending part is formed on one side of the motor flange end cover, the end face of the second extending part is a second positioning face, a second positioning hole is formed in the second extending part, and the first positioning hole is connected with the second positioning hole in a positioning mode through a connecting piece. Utilize the first end cover and the motor flange end cover of pump body to set up the extension simultaneously and set up corresponding locating hole, locating surface simultaneously when the shaping to and modes such as increase end cover thickness, strengthen the axiality of pump body and motor, and make the rotor subassembly focus more be close to the bearing, thereby the stability of reinforcing operation, the vibrations and the noise that produce when reducing the operation.

Description

Coaxial assembly structure of motor and pump body

The technical field is as follows:

the utility model relates to a vacuum pump technical field refers in particular to a coaxial package assembly of motor and pump body.

Background art:

vacuum pumps are widely used in various fields as important industrial equipment, and are of various types, and the types and specifications of vacuum pumps required in different situations are also different. In the existing vacuum pump, a motor and a pump body are split and are connected through a belt and a belt pulley, so that the whole occupied space is large, the belt and the like belong to easily damaged objects, the service life is short, the replacement cost is high, and time is also consumed; moreover, a motor shaft and a rotor shaft of the pump body are respectively installed and need a bearing and lubrication; moreover, the energy loss is large in the transmission process, so that the overall efficiency is low. Therefore, the applicant develops a direct-connected transmission type energy-saving permanent magnet motor vacuum pump, and the direct-connected transmission type energy-saving permanent magnet motor vacuum pump is applied to a Chinese utility model with the patent number of 202020898908X. In the vacuum pump, the motor flange end cover and the end cover of the pump body are positioned only by the screw holes respectively formed by the motor and the pump body, the positioning is too simple and has poor stability, and the motor and the pump body are easy to generate vibration and noise when running at high speed; on the other hand, the motor flange end cover and the pump body end cover are usually made of thin materials, and the weight proportion of the rotor part, the motor shell and the stator assembly is large in terms of the motor, so that after the motor rotor is connected with the driving shaft of the pump body, the gravity center of the rotor part is often far away from the bearing position, and instability, vibration and noise are easily generated during rotation.

The utility model has the following contents:

the utility model aims at overcoming the above-mentioned weak point of prior art, provide a coaxial package assembly of motor and pump body.

The utility model adopts the technical proposal that: a coaxial assembly structure of a motor and a pump body is provided, the pump body is provided with a pump shell, a first end cover and a second end cover which are arranged at two ends of the pump shell, bearing installation parts are respectively formed on the first end cover and the second end cover, and a driving shaft and a driven shaft are respectively installed on the first end cover and the second end cover through two pairs of bearings; the motor comprises a motor shell and a motor flange end cover, a stator assembly and a rotor assembly are arranged in the motor, a first extending part is formed on one side of a bearing mounting part of a first end cover, a first positioning hole is formed in the first extending part, and the end face of the first extending part is a first positioning surface; a second extending part corresponding to the first extending part is formed on one side of the motor flange end cover, the end face of the second extending part is a second positioning surface, a second positioning hole corresponding to the first positioning hole is formed in the second extending part, the first positioning hole and the second positioning hole are positioned through positioning pins, the first positioning surface and the second positioning surface are in contact positioning, and connecting screw holes are formed in the corner positions of the first extending part and the second extending part and are in locking connection through bolts; the driving shaft of the pump body extends to the inside of the motor and is fixedly connected with the rotor assembly of the motor.

The bearing installation department and the motor flange end cover of first end cover all have along the thickening section of axis direction, and the bearing installation department and the motor flange end cover of first end cover all thicken promptly for the two increases in the weight of combination department, can make the focus of rotor subassembly and driving shaft more be close to the bearing, and then can further strengthen stability, reduce vibrations.

Shaft sleeves are respectively arranged between the outer walls of the two ends of the driving shaft and the shaft holes of the first end cover and the second end cover, and sealing rings are arranged between the outer walls of the inner ends of the shaft sleeves and the shaft holes; correspondingly, shaft sleeves are respectively arranged between the outer walls of the two ends of the driven shaft and the shaft holes of the first end cover and the second end cover, and sealing rings are also arranged between the outer walls of the inner ends of the shaft sleeves and the shaft holes.

Through above-mentioned structure, the first end cover and the motor flange end cover that utilize the pump body set up the extension simultaneously and set up corresponding locating hole simultaneously when the shaping, the locating surface, and modes such as increase end cover thickness, make the two can form more accurate locating component when the equipment, thereby strengthen the axiality of pump body and motor, and make the rotor subassembly focus more be close to the bearing, thereby strengthen the stability of operation, vibrations and the noise that produces when reducing the operation, and can prolong maintenance cycle and life.

Description of the drawings:

fig. 1 and 2 are perspective views of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a cross-sectional view of the present invention.

The specific implementation mode is as follows:

as shown in fig. 1-4, the present invention relates to a coaxial assembly structure of a motor and a pump body, the pump body has a pump housing 1 and a first end cap 11 and a second end cap 12 disposed at two ends of the pump housing 1, the first end cap 11 and the second end cap 12 are respectively formed with a bearing mounting portion 101 and are respectively mounted with a driving shaft 14 and a driven shaft through two pairs of bearings 13 (not shown in the figure, arranged in parallel with the driving shaft 14, and driven by a gear in a gear box at the second end cap 12); the motor 2 comprises a motor shell 21 and a motor flange end cover 22, a stator assembly 23 and a rotor assembly 24 are arranged in the motor, a first extension part 111 is formed on one side of the bearing installation part 101 of the first end cover 11, a first positioning hole 112 is formed in the first extension part 111, and the end surface of the first extension part 111 is a first positioning surface 113; a second extending part 221 corresponding to the first extending part 111 is formed on one side of the motor flange end cover 22, the end surface of the second extending part 221 is a second positioning surface 222, a second positioning hole 223 corresponding to the first positioning hole 112 is formed on the second extending part 221, the first positioning hole 112 and the second positioning hole 223 are connected by a positioning pin 25 in a positioning manner,

the corner positions of the first extension part 111 and the second extension part 221 are provided with connecting screw holes and are locked and connected through bolts 26; four groups of connecting screw holes and bolts 26 are distributed at four corners of the rectangular bearing mounting part and the extending part thereof, wherein two groups are connected from the outside, and the other two groups are connected from the inside of the motor towards the direction of the pump body; the first positioning surface 113 is positioned in contact with the second positioning surface 222; the driving shaft 14 of the pump body 1 extends to the inside of the motor 2 and is fixedly connected with a rotor assembly 24 of the motor 2.

Bearing installation portion 101 and motor flange end cover 22 of first end cover 11 all have along axis direction's thickening section 201, and first end cover 11's bearing installation portion and motor flange end cover 22 all thicken promptly for the two increases in the weight of combination department, can make rotor subassembly 24 and driving shaft 14's focus more be close to the bearing, and then can further strengthen stability, reduce vibrations.

Shaft sleeves 141 are respectively arranged between the outer walls of the two ends of the driving shaft 14 and the shaft holes of the first end cover 11 and the second end cover 12, and sealing rings 142 are arranged between the outer walls of the inner ends of the shaft sleeves 141 and the shaft holes; correspondingly, shaft sleeves are respectively arranged between the outer walls of the two ends of the driven shaft and the shaft holes of the first end cover and the second end cover, and sealing rings are also arranged between the outer walls of the inner ends of the shaft sleeves and the shaft holes. The sealing rings can be used for increasing the sealing performance of the driving shaft 14, the driven shaft and the end cover and preventing the leakage generated when the pump works.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A coaxial assembly structure of a motor and a pump body is provided, the pump body is provided with a pump shell, a first end cover and a second end cover which are arranged at two ends of the pump shell, bearing installation parts are respectively formed on the first end cover and the second end cover, and a driving shaft and a driven shaft are respectively installed on the first end cover and the second end cover through two pairs of bearings; the motor includes motor housing and motor flange end cover, and motor inside is equipped with stator module and rotor subassembly, its characterized in that: a first extending part is formed on one side of the bearing mounting part of the first end cover, a first positioning hole is formed in the first extending part, and the end face of the first extending part is a first positioning surface; a second extending part corresponding to the first extending part is formed on one side of the motor flange end cover, the end face of the second extending part is a second positioning surface, a second positioning hole corresponding to the first positioning hole is formed in the second extending part, the first positioning hole and the second positioning hole are positioned through positioning pins, the first positioning surface and the second positioning surface are in contact positioning, and connecting screw holes are formed in the corner positions of the first extending part and the second extending part and are in locking connection through bolts; the driving shaft of the pump body extends to the inside of the motor and is fixedly connected with the rotor assembly of the motor.

2. The coaxial assembling structure of the motor and the pump body according to claim 1, wherein: the bearing installation part of the first end cover and the motor flange end cover are both provided with thickened sections along the axis direction.

3. The coaxial assembling structure of the motor and the pump body according to claim 1, wherein: shaft sleeves are respectively arranged between the outer walls of the two ends of the driving shaft and the shaft holes of the first end cover and the second end cover, and sealing rings are arranged between the outer walls of the inner ends of the shaft sleeves and the shaft holes; correspondingly, shaft sleeves are respectively arranged between the outer walls of the two ends of the driven shaft and the shaft holes of the first end cover and the second end cover, and sealing rings are also arranged between the outer walls of the inner ends of the shaft sleeves and the shaft holes.