CN210490608U

CN210490608U - Dynamic seal structure of rotating electrical machine protection grade IP67

Info

Publication number: CN210490608U
Application number: CN201920941798.8U
Authority: CN
Inventors: 宦文极; 罗刚
Original assignee: Suzhou Light Industry Motor Factory Co Ltd
Current assignee: Suzhou Light Industry Motor Factory Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-05-08
Anticipated expiration: 2029-06-21

Abstract

The utility model relates to a movable sealing structure of a rotary motor protection grade IP67, which comprises a motor base, wherein the top of the motor base is fixedly connected with a motor through a connecting block, the outside of the motor is fixedly connected with radiating fins, the radiating fins are evenly provided with radiating holes, the left end of the motor is fixedly connected with a fan shield, the right end of the motor is rotatably connected with a rotating shaft through a bearing, the rotating shaft is provided with a key groove, the right end of the motor is fixedly connected with a motor end cover, the left side of the motor end cover is fixedly connected with a shaft cover, the motor end cover is symmetrically provided with a concave platform close to one side of the rotating shaft, the concave platform is internally provided with a skeleton type rubber oil seal, and through arranging two skeleton type rubber oil seals at the shaft hole of the end cover, the skeleton type rubber oil seal and, the motor has little influence on the efficiency index of the motor, has good heat dissipation effect and has enough service life.

Description

Dynamic seal structure of rotating electrical machine protection grade IP67

Technical Field

The utility model relates to a rotating electrical machines protection level IP 67's dynamic seal structure belongs to motor dynamic seal technical field.

Background

When the rotating motor runs under various severe environmental conditions, the quality of the protective performance of the rotating motor directly determines the running reliability of the rotating motor, the national standard GB4942.1-2006 specifies the protective grade of the rotating motor, and when the protective grade is IP67, the requirements of dust density and water immersion resistance are respectively met, and the requirements are extremely severe. Sealing structure of rotating electrical machines includes static seal and dynamic seal two parts, and the static seal indicates the sealed of rabbet department between terminal box, frame and end cover, end cover and the shaft cover of motor, generally has the more ripe sealing scheme such as O ring rubber seal, sealed glue, the utility model discloses all do not relate to, the utility model discloses it is dynamic seal, dynamic seal is the seal structure between static part and the moving part promptly, and the rotating electrical machines is the sealing scheme between end cover, shaft cover and the pivot, and dynamic seal requires highly, and the degree of difficulty is directly deciding rotating electrical machines protective structure's success or failure greatly.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model overcomes current defect, provides a rotating electrical machines protection level IP 67's dynamic seal structure, stacks from top to bottom diffusion room and gas defense passageway, has practiced thrift the land area that the diffusion room occupy, has reduced the volume of gas defense passageway, does benefit to the number of times of taking a breath of improvement gas defense passageway under the same amount of wind, has improved efficiency, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a rotating electrical machines protection level IP67 moves seal structure, includes motor base, the motor is passed through connecting block fixedly connected with motor at the motor base top, motor outside fixedly connected with radiating fin, the louvre has evenly been seted up on the radiating fin, motor left end fixedly connected with fan guard shield, the motor right-hand member rotates through the bearing and is connected with the pivot, the keyway has been seted up in the pivot, motor right-hand member fixedly connected with motor end cover, motor end cover left side fixedly connected with shaft cover, the motor end cover is close to pivot one side symmetry and has seted up the concave station, the inside skeleton formula rubber oil blanket that is equipped with of concave station, just skeleton formula rubber oil blanket is back to back.

Further, the dimensional tolerance of the rotating shaft is e6, and the surface roughness is 0.8.

Further, the nominal size of the inner diameter of the framework type rubber oil seal is the same as the size of the rotating shaft at the position.

Further, threaded holes are formed in four corners of the motor base.

Further, the bottom of the motor base is also provided with anti-skid textures.

Further, the radiating fins are made of copper alloy materials and are arranged in a hollow structure.

The utility model discloses beneficial effect:

1. the utility model discloses a move seal structure, what framework formula rubber oil blanket and pivot are constituteed is that the contact is sealed, and sealed effect is far superior to non-contact and seals, and two oil blanket of more importantly play the double seal effect, because it is consequently reliable very much to be double seal, all reaches the requirement of GB4942.1-2006 through many times of examination test in batch production's motor.

2. Due to the reasonable selection of the dimensional tolerance and the surface roughness of the rotating shaft and the reasonable selection of the material and the manufacturing process of the oil seal, the mechanical loss of the dynamic sealing structure is small, and the influence on the efficiency index of the motor is little.

3. The utility model discloses a move seal structure simple and practical, not too high manufacturing degree of difficulty, manufacturing cost is also within acceptable range.

4. Through the arrangement of the radiating fins and the radiating holes in the radiating fins, the area of heat exchange with the outside is increased, and the radiating effect of the motor is effectively improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a structural diagram of a dynamic seal structure of a protection grade IP67 of a rotating electrical machine of the present invention.

Fig. 2 is a motor structure diagram of a dynamic seal structure of a protection class IP67 of a rotating electrical machine according to the present invention.

Fig. 3 is a motor base structure diagram of a dynamic seal structure of the protection grade IP67 of the rotating electrical machine of the present invention.

Reference numbers in the figures: 1. a motor base; 2. a motor; 3. a bearing; 4. framework type rubber oil seal; 5. a rotating shaft; 6. a keyway; 7. a concave platform; 8. a motor end cover; 9. connecting blocks; 10. a fan shroud; 11. a heat dissipating fin; 12. heat dissipation holes; 13. anti-skid texture; 14. a threaded bore.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-3, a dynamic seal structure of a protection level IP67 of a rotating electrical machine comprises a motor base 1, wherein a motor 2 is fixedly connected to the top of the motor base 1 through a connecting block 9, heat dissipation fins 11 are fixedly connected to the outer side of the motor 2, heat dissipation holes 12 are uniformly formed in the heat dissipation fins 11, a fan guard 10 is fixedly connected to the left side of the motor 2, a rotating shaft 5 is rotatably connected to the right end of the motor 2 through a bearing 3, a key groove 6 is formed in the rotating shaft 5, a motor end cover 8 is fixedly connected to the right end of the motor 2, a shaft cover is fixedly connected to the left side of the motor end cover 8, a concave platform 7 is symmetrically formed on one side of the motor end cover 8 close to the rotating shaft 5, a frame-type rubber oil seal 4 is arranged inside the concave platform 7, the frame-type rubber oil seals, the dynamic sealing structure is reliable and simple, the framework type rubber oil seal 4 and the rotating shaft 5 form a contact type seal, the sealing effect is far superior to that of a non-contact type seal, and more importantly, the two oil seals play a double sealing role, so that the sealing effect is very ideal.

More specifically, the dimensional tolerance of the rotating shaft 5 is e6, the surface roughness is 0.8, the nominal size of the inner diameter of the framework-type rubber oil seal 4 is the same as the size of the rotating shaft at the position, the selection of the material, the manufacturing process and the dimensional tolerance and the surface roughness of the oil seal ensures that the dynamic seal structure has smaller mechanical loss, the influence on the efficiency index of the motor is very small, threaded holes 14 are formed in the four corners of the motor base 1, anti-skid textures 13 are further arranged at the bottom of the motor base 1, the heat dissipation fins 11 are made of copper alloy materials, and the heat dissipation fins 11 are of hollow structures.

The utility model discloses improve in: the utility model provides a rotating electrical machines protection level IP 67's dynamic seal structure, through setting up louvre 12 on cooling fin 11 and the cooling fin 11, the area with external heat exchange has been increased, the radiating effect of motor 2 has effectively been improved, through arranging two skeleton rubber oil seals 4 in 8 shaft holes of motor end cover, this dynamic seal structure is reliable simple, what skeleton rubber oil seal 4 and pivot 5 constitute is that the contact is sealed, sealed effect is far superior to non-contact is sealed, more importantly two oil seals play dual seal effect, therefore sealed effect is very ideal, and the material of oil blanket, manufacturing process, the dimensional tolerance of pivot, the chooseing of roughness has guaranteed again that this dynamic seal structure has less mechanical loss, it is very little to the efficiency index influence of motor, and have sufficient life-span.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a rotating electrical machines protection level IP67 moves seal structure, includes motor base (1), its characterized in that: motor base (1) top is through connecting block (9) fixedly connected with motor (2), motor (2) outside fixedly connected with radiating fin (11), radiating hole (12) have evenly been seted up on radiating fin (11), motor (2) left end fixedly connected with fan guard shield (10), motor (2) right-hand member is rotated through bearing (3) and is connected with pivot (5), keyway (6) have been seted up on pivot (5), motor (2) right-hand member fixedly connected with motor end cover (8), motor end cover (8) left side fixedly connected with axle cover, concave station (7) have been seted up near pivot (5) one side symmetry in motor end cover (8), concave station (7) inside is equipped with skeleton formula rubber oil blanket (4), just skeleton formula rubber oil blanket (4) are arranged back to back.

2. A dynamic seal configuration for a rotating electrical machine protection class IP67, according to claim 1, wherein: the dimensional tolerance of the rotating shaft (5) is e6, and the surface roughness is 0.8.

3. A dynamic seal configuration for a rotating electrical machine protection class IP67, according to claim 1, wherein: the nominal size of the inner diameter of the framework type rubber oil seal (4) is the same as the size of the rotating shaft at the position.

4. A dynamic seal configuration for a rotating electrical machine protection class IP67, according to claim 1, wherein: threaded holes (14) are formed in the four corners of the motor base (1).

5. A dynamic seal configuration for a rotating electrical machine protection class IP67, according to claim 1, wherein: the bottom of the motor base (1) is also provided with anti-skid grains (13).

6. A dynamic seal configuration for a rotating electrical machine protection class IP67, according to claim 1, wherein: the radiating fins (11) are made of copper alloy materials, and the radiating fins (11) are of hollow structures.