CN218733561U

CN218733561U - Sealing device for permanent magnet synchronous motor

Info

Publication number: CN218733561U
Application number: CN202222776210.2U
Authority: CN
Inventors: 罗洪清; 吕生国; 刘志强
Original assignee: Jiangsu Zhuerkaog Motor Energy Saving Technology Co ltd
Current assignee: Jiangsu Zhuerkaog Motor Energy Saving Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-24
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a sealing device for PMSM, including the PMSM body, the PMSM body includes the shell, the shell top is provided with the upper cover, the shell bottom is provided with the lower cover, the bolt hole has all been seted up to upper cover and lower cover outer wall. The utility model discloses a seal structure, with the laminating strip of sealing ring top and bottom respectively with the shell, the outer wall laminating of upper cover and lower cover, shell to PMSM, hookup location between upper cover and the lower cover protects, then insert the bolt hole in to the shell, fix between upper cover and the lower cover, because seal structure is respectively along the shell, upper cover and lower cover are outside to be extended, what make seal structure can be better to the shell, hookup location protects between upper cover and the lower cover, avoid the shell, bump between upper cover and the lower cover, cause outside dust etc. to enter into PMSM's inside, operation PMSM operates.

Description

Sealing device for permanent magnet synchronous motor

Technical Field

The utility model relates to a PMSM field, concretely relates to sealing device for PMSM.

Background

The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, the efficiency and the power density of the motor are improved, and the permanent magnet synchronous motor is composed of a stator, a rotor, an end cover and other parts. The stator is basically the same as a common induction motor, and a lamination structure is adopted to reduce iron loss during the operation of the motor. The rotor can be made into solid or laminated by lamination. The armature winding can adopt a concentrated whole-pitch winding, and can also adopt a distributed short-pitch winding and an unconventional winding.

However, when the permanent magnet synchronous motor is in actual use, the end covers of the permanent magnet synchronous motor are connected through the bolts, and in the running process of the permanent magnet synchronous motor, due to the rigid connection between the end covers, collision occurs between the end covers, gaps are generated between the end covers, and external dust and the like easily enter the stator and the rotor through the gaps between the end covers.

Therefore, it is necessary to provide a sealing device for a permanent magnet synchronous motor to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealing device for permanent magnet synchronous motor, through seal structure, with the laminating strip of sealing ring top and bottom respectively with the shell, the outer wall laminating of upper cover and lower cover, shell to permanent magnet synchronous motor, hookup location between upper cover and the lower cover protects, then insert the bolt hole in to the shell, fix between upper cover and the lower cover, because seal structure is respectively along the shell, upper cover and lower cover outwards extend, make that seal structure can be better to the shell, hookup location protects between upper cover and the lower cover, avoid the shell, bump between upper cover and the lower cover, cause outside dust etc. to enter into permanent magnet synchronous motor's inside, with the above-mentioned weak point in the solution technique.

In order to achieve the above object, the present invention provides the following technical solutions: a sealing device for a permanent magnet synchronous motor comprises a permanent magnet synchronous motor body, wherein the permanent magnet synchronous motor body comprises a shell, an upper cover is arranged at the top of the shell, a lower cover is arranged at the bottom of the shell, bolt holes are formed in the outer walls of the upper cover and the lower cover, and heat dissipation holes are formed in the outer wall of the lower cover;

the sealing structure comprises a sealing ring, the top and the bottom of the sealing ring are both provided with a fitting groove, the inner wall of the fitting groove is fitted with the outer walls of the shell, the upper cover and the lower cover, and a mounting hole is formed in the fitting groove;

and the isolation structure is fixedly connected to the inner wall of the lower cover.

Preferably, the number of the bolt holes is set to be a plurality, and the plurality of the bolt holes are all annularly arrayed on the outer walls of the shell, the upper cover and the lower cover.

Preferably, the sealing ring is made of rubber, and the top and the bottom of the sealing ring are both provided with circular arc-shaped attaching grooves.

Preferably, isolation structure includes baffle, mounting groove, axis of rotation, rotor plate and guide way, baffle fixed connection is in the inner wall of lower cover, the mounting groove has been seted up to the baffle inside, the mounting groove both ends are rotated and are connected with the axis of rotation, axis of rotation one end fixedly connected with rotor plate, the guide way has been seted up at the rotor plate top.

Preferably, one end of the rotating shaft is fixedly connected with a flat spiral spring, and one end of the flat spiral spring is fixedly connected with the inner wall of the mounting groove.

Preferably, the number of the rotating plates is set to be a plurality, and the plurality of rotating plates are annularly arrayed inside the baffle.

In the technical scheme, the utility model provides a technological effect and advantage:

1. through seal structure, with the laminating strip of sealing ring top and bottom respectively with the shell, the outer wall laminating of upper cover and lower cover, shell to PMSM, hookup location between upper cover and the lower cover protects, then insert the bolt hole in to the shell, fix between upper cover and the lower cover, because seal structure is respectively along the shell, upper cover and lower cover outwards extend, make that seal structure can be better to the shell, hookup location protects between upper cover and the lower cover, avoid the shell, bump between upper cover and the lower cover, cause outside dust etc. to enter into PMSM's inside.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a perspective sectional view of the present invention;

FIG. 3 is a perspective view of the isolation structure of the present invention;

fig. 4 is a perspective view of the sealing structure of the present invention.

Description of the reference numerals:

1. a permanent magnet synchronous motor body; 101. a housing; 102. an upper cover; 103. a lower cover; 104. bolt holes; 105. heat dissipation holes; 2. a sealing structure; 201. a seal ring; 202. a fitting groove; 203. mounting holes; 3. an isolation structure; 301. a baffle plate; 302. mounting grooves; 303. a rotating shaft; 304. a rotating plate; 305. a guide groove.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a sealing device for a permanent magnet synchronous motor as shown in figures 1-4, comprising a permanent magnet synchronous motor body 1, wherein the permanent magnet synchronous motor body 1 comprises a shell 101, an upper cover 102 is arranged on the top of the shell 101, a lower cover 103 is arranged on the bottom of the shell 101, bolt holes 104 are respectively arranged on the outer walls of the upper cover 102 and the lower cover 103, and a heat dissipation hole 105 is arranged on the outer wall of the lower cover 103;

the sealing structure 2 comprises a sealing ring 201, the top and the bottom of the sealing ring 201 are both provided with a fitting groove 202, the inner wall of the fitting groove 202 is fitted with the outer walls of the casing 101, the upper cover 102 and the lower cover 103, and the fitting groove 202 is internally provided with a mounting hole 203;

and the isolation structure 3 is fixedly connected to the inner wall of the lower cover 103.

Further, in the above technical solution, the number of the bolt holes 104 is set to be multiple, the bolt holes 104 are all annularly arrayed on the outer walls of the casing 101, the upper cover 102 and the lower cover 103, and the casing 101, the upper cover 102 and the lower cover 103 can be stably fixed by the arranged bolt holes 104, so that the casing 101, the upper cover 102 and the lower cover 103 are prevented from being separated from each other in the operation process of the permanent magnet synchronous motor.

Further, in the above technical scheme, the sealing ring 201 is made of rubber, the top and the bottom of the sealing ring 201 are both provided with the attaching grooves 202 arranged in the shape of circular arc, the attaching grooves 202 at the top and the bottom of the sealing ring 201 extend outwards respectively to wrap part of the outer walls of the casing 101, the upper cover 102 and the lower cover 103, so that when the sealing structure 2 is arranged between the casing 101, the upper cover 102 and the lower cover 103, the collision between the casing 101, the upper cover 102 and the lower cover 103 causes the sealing structure 2 to fall off, meanwhile, the sealing structure 2 made of rubber can slow down the collision between the casing 101, the upper cover 102 and the lower cover 103, and the casing 101, the upper cover 102 and the lower cover 103 are prevented from being damaged.

Further, in the above technical scheme, the isolation structure 3 includes a baffle 301, an installation groove 302, a rotation shaft 303, a rotation plate 304 and a guide groove 305, the baffle 301 is fixedly connected to the inner wall of the lower cover 103, the installation groove 302 is formed inside the baffle 301, two ends of the installation groove 302 are rotatably connected to the rotation shaft 303, one end of the rotation shaft 303 is fixedly connected to the rotation plate 304, the guide groove 305 is formed in the top of the rotation plate 304, one end of the rotation shaft 303 is fixedly connected to a flat spiral spring, one end of the flat spiral spring is fixedly connected to the inner wall of the installation groove 302, the rotation plate 304 is provided in a plurality of numbers, the rotation plate 304 is annularly arrayed inside the baffle 301, the fan blades are arranged inside the permanent magnet synchronous motor body 1, so that the permanent magnet synchronous motor body 1 drives the fan blades to rotate in the operation process, then the fan blades push hot air outwards, the hot air pushes the rotation plate 304 to rotate, gaps are generated between the rotation plate 304 and the installation groove 302, then the heat can be discharged through the scrolls, and after the permanent magnet synchronous motor body 1 stops operating, the flat spring drives the rotation plate 304 to reset, thereby sealing the permanent magnet synchronous motor body 1.

This practical theory of operation:

referring to fig. 1 to 4 of the specification, the casing 101, the upper cover 102 and the lower cover 103 are assembled together, the fitting groove 202 at the bottom of the sealing ring 201 is fitted to the outer wall of the casing 101, then the outer wall at the bottom of the upper cover 102 or the lower cover 103 is inserted into the inner wall of the fitting groove 202 at the top of the sealing ring 201, the bolt hole 104 is aligned with the mounting hole 203, then the bolt is inserted into the bolt hole 104 to fix the casing 101, the upper cover 102 and the lower cover 103, and the sealing structure 2 protects and seals the contact surface between the casing 101, the upper cover 102 and the lower cover 103 to prevent external dust from entering the inside of the casing 101 through the gap at the connection position between the casing 101, the upper cover 102 and the lower cover 103;

referring to the attached drawings 1-4 of the specification, in the process of running of the permanent magnet synchronous motor body 1, a built-in heat dissipation fan inside the permanent magnet synchronous motor body 1 rotates to drive gas to flow, then the gas pushes the rotating plate 304 to rotate, the rotating plate 304 drives the rotating shaft 303 to rotate and extrude the flat spiral spring, a gap is generated between the rotating plate 304 and the mounting groove 302, the gas is discharged through the gap and the heat dissipation holes 105, after the permanent magnet synchronous motor body 1 stops running, the flat spiral spring drives the rotating shaft 303 to reset, then the rotating shaft 303 drives the rotating plate 304 to be attached to the mounting groove 302, so that the isolation structure 3 is sealed, and external dust is prevented from entering the shell 101 when the permanent magnet synchronous motor body 1 does not run.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a sealing device for PMSM which characterized in that: comprises that

The permanent magnet synchronous motor comprises a permanent magnet synchronous motor body (1), wherein the permanent magnet synchronous motor body (1) comprises a shell (101), an upper cover (102) is arranged at the top of the shell (101), a lower cover (103) is arranged at the bottom of the shell (101), bolt holes (104) are formed in the outer walls of the upper cover (102) and the lower cover (103), and heat dissipation holes (105) are formed in the outer wall of the lower cover (103);

the sealing structure (2) comprises a sealing ring (201), the top and the bottom of the sealing ring (201) are both provided with a fitting groove (202), the inner wall of the fitting groove (202) is fitted with the outer walls of the shell (101), the upper cover (102) and the lower cover (103), and the fitting groove (202) is internally provided with a mounting hole (203);

the isolation structure (3), isolation structure (3) fixed connection is in the inner wall of lower cover (103).

2. The sealing device for a permanent magnet synchronous motor according to claim 1, characterized in that: the number of the bolt holes (104) is set to be a plurality, and the bolt holes (104) are all annularly arrayed on the outer walls of the shell (101), the upper cover (102) and the lower cover (103).

3. The sealing device for a permanent magnet synchronous motor according to claim 1, characterized in that: sealing ring (201) are made for the rubber material, circular arc setting's laminating groove (202) are all seted up to the top and the bottom of sealing ring (201).

4. The sealing device for a permanent magnet synchronous motor according to claim 1, characterized in that: isolation structure (3) include baffle (301), mounting groove (302), axis of rotation (303), rotor plate (304) and guide way (305), baffle (301) fixed connection is in the inner wall of lower cover (103), inside mounting groove (302) of having seted up of baffle (301), mounting groove (302) both ends are rotated and are connected with axis of rotation (303), axis of rotation (303) one end fixedly connected with rotor plate (304), guide way (305) have been seted up at rotor plate (304) top.

5. The sealing device for a permanent magnet synchronous motor according to claim 4, wherein: one end of the rotating shaft (303) is fixedly connected with a flat spiral spring, and one end of the flat spiral spring is fixedly connected with the inner wall of the mounting groove (302).

6. The sealing device for a permanent magnet synchronous motor according to claim 4, wherein: the number of the rotating plates (304) is set to be a plurality, and the rotating plates (304) are annularly arrayed inside the baffle plate (301).