CN111446815A

CN111446815A - Explosion-proof motor

Info

Publication number: CN111446815A
Application number: CN201911250091.3A
Authority: CN
Inventors: 杨晔
Original assignee: Wuxi Professional College of Science and Technology
Current assignee: Wuxi Professional College of Science and Technology
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-07-24

Abstract

The invention provides an explosion-proof motor, which can accelerate the heat dissipation in the motor and is not easy to accumulate dust. The anti-explosion fan comprises a rotor and an anti-explosion shell, wherein the rotor is sleeved in a rotating shaft, a junction box is arranged at the top of the anti-explosion shell, a heat dissipation port is formed in a front end cover of the anti-explosion shell, an air inlet is formed in a rear end cover of the anti-explosion shell, the rotating shaft penetrates through the front end cover and the rear end cover, a fan is sleeved at the rear end of the rotating shaft, the anti-explosion fan is characterized in that a cold plate placing groove is formed between the rotor and the fan, a groove opening for taking and placing the cold plate placing groove is formed in the cylindrical part of the rear.

Description

Explosion-proof motor

Technical Field

The invention relates to the technical field of motors, in particular to an explosion-proof motor.

Background

The explosion-proof motor is a motor which can be used in flammable and explosive places, and does not generate electric sparks during operation. The device is mainly used in coal mines, petroleum and natural gas, petrochemical industry and chemical industry, and is generally used for driving pumps, fans, compressors, other transmission machines and the like.

The prior art discloses the application numbers as follows: 201721810736.0, comprising a shell and a rotating shaft, comprising a shell, a front end cover, a rear end cover, a fan housing and a base, wherein the front end cover and the rear end cover are respectively arranged at the left and right sides of the shell, the fan housing is arranged at the outer side of the rear end cover, the inner wall of the shell is coated with a waterproof coating, the inner side of the waterproof coating is provided with an explosion-proof fiber layer, the inner side of the explosion-proof fiber layer is provided with a flame-retardant layer, the shell is internally provided with a stator core, the stator core is provided with a stator winding, a rotor core is sleeved on the rotating shaft at the cavity inside the stator core, the rotating shaft penetrates through the front end cover and the right end cover, the right end of the rotating shaft is sleeved with a fan, the rotating shaft drives the fan to rotate together, the wind generated by the fan enters the shell from an air inlet hole on the rear end cover, guarantee the steady operation of motor, but when motor temperature was higher, the produced wind of fan rotation was hot-blast, can not play fine radiating action, and wind is covered from the rear end simultaneously and is got into the casing, brings the outside air with impurity into the motor inside, causes dust and impurity to pile up in inlet opening department easily, influences the motor heat dissipation.

Disclosure of Invention

Aiming at the problem of poor heat dissipation of the explosion-proof motor in operation, the invention provides the explosion-proof motor which can accelerate the heat dissipation in the motor and is not easy to accumulate dust.

The technical scheme is as follows: the utility model provides an explosion-proof machine, its includes rotor, explosion-proof housing, the rotor suit is in the pivot, explosion-proof housing's top sets up the terminal box, be provided with the air intake on heat dissipation mouth, the rear end cap on the front end housing of explosion-proof housing, the pivot pierces through front end housing and rear end cap setting, the fan is established to pivot rear end housing, a serial communication port, the rotor with be equipped with the cold drawing standing groove between the fan, be provided with the notch of getting the cold drawing standing groove in the rear end cap cylinder part, be equipped with sealed lid on the cold drawing standing groove.

It is further characterized in that: a filter screen and a cleaning brush are arranged on the outer side of the end part of the rear end cover, a bearing matched with the rotating shaft is installed on the rear end cover, the filter screen is sleeved on the bearing, and the cleaning brush is fixedly connected with the end part of the rotating shaft;

a water absorption sponge is arranged below the inner wall of the cold plate placing groove;

a sealing ring is arranged in the sealing cover, and a handle is arranged on the sealing cover;

and a dustproof net is arranged at the air outlet of the heat dissipation opening.

In the structure, the cylindrical part of the rear end cover is provided with the cold plate placing groove and the cold plate is arranged in the cold plate placing groove, the rotating shaft drives the fan to rotate together in the operation process of the motor, air generated by the fan enters the shell from the air inlet in the rear end cover, the air inlet in the rear end cover and the heat dissipation port in the front end cover form a ventilation air channel, and the cold plate can reduce the temperature of the air, accelerate the heat dissipation in the motor and reduce the temperature in the shell to be within a safe range. And because the cleaning brush is arranged outside the filter screen, the rotating shaft drives the cleaning brush to rotate, so that one side of the filter screen, which is accumulated with dust and impurities, is automatically cleaned, the dust and the impurities are prevented from being accumulated too much to block an air inlet, and the heat dissipation inside the motor is further ensured.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a front view of the present invention;

FIG. 3 is a longitudinal cross-sectional view of the present invention taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of the invention at B of FIG. 2;

in the figure: 1. a motor main body; 2. an explosion-proof housing; 3. installing a base; 4. a junction box; 5. a rear end cap; 6. a rotating shaft; 7. a sealing cover; 8. a handle; 9. a rotor; 10. a cold plate placing groove; 11. a cold plate; 12. a water-absorbing sponge; 13. a notch; 14. a fan; 15. a filter screen; 16. a bearing; 17. a chute; 18. a slider; 19. a cleaning brush; 20. A front end cover; 21. a heat dissipation port; 22. a dust screen.

Detailed Description

As shown in fig. 1-3, an explosion-proof motor comprises an explosion-proof housing 2, a rotor 9, a rotating shaft 6 sleeved with the rotor 9, a base 3 mounted with the explosion-proof housing 2, a junction box 4 arranged on the top of the explosion-proof housing 2, a heat dissipating port 21 arranged on the front end cover 21, a dust screen 22 arranged at the air outlet of the heat dissipating port 21, an air inlet arranged on the rear end cover 5, a front end cover 20 and a rear end cover 5 penetrated by the rotating shaft 6, a fan 14 sleeved on the side of the rotating shaft 6 near the rear end cover 5, a cold plate placing groove 10 arranged between the rotor 9 and the fan 14, a notch 13 arranged on the cylindrical part of the rear end cover 5 for taking and placing the cold plate placing groove 10, the cold plate placing groove 10 mounted on the rear end cover 5, a water absorbing sponge 12 arranged below the inner wall of the cold plate placing groove 10, a sealing cover 7 arranged on the cold plate placing groove 10, the water absorption sponge 12 and the sealing cover 7 can prevent water drops generated by water vapor condensation on the cold plate from dropping into the motor to cause motor failure, and the safety of the motor is further ensured.

A filter screen 15 and a cleaning brush 19 are arranged on the outer side of the end cover of the rear end cover 5, a bearing 16 matched with the rotating shaft 6 is installed on the rear end cover 5, the filter screen 15 is sleeved on the bearing 16, the cleaning brush 19 is fixedly connected with the end part of the rotating shaft 6 through a screw, the cleaning brush 19 is a long-strip-shaped cleaning brush, a sliding block 18 is fixedly arranged on the end part of the cleaning brush 19, and the sliding block 18 can slide in a corresponding sliding groove 17 formed in the rear end cover 5. The setting of cleaning brush 19 makes the motor operation in-process, and pivot 6 drives cleaning brush 19 and rotates, can pile up one side of dust and impurity to filter screen 14 and carry out self-cleaning, prevents that dust and impurity from piling up too much and blockking up the air intake.

The working principle of the invention is as follows: before the explosion-proof motor is used, the cold plate placing groove 10 is firstly installed in the notch 13, then the cold plate 11 is placed in the refrigerator to be cooled for more than 12h, and then the cold plate 11 is placed in the cold plate placing groove 10 and covered with the sealing cover 7. The motor is started, the rotating shaft 6 drives the fan 14 to rotate, the air generated by the fan 14 forms a ventilation air channel between the air inlet on the rear end cover 5 and the heat dissipation port 21 on the front end cover 20, and the cold plate 11 can reduce the temperature of the air, so that the temperature in the shell is reduced to a safe range. Simultaneously, the filter screen 15 can intercept dust and impurities in the air to enable the dust and the impurities to be remained on one side of the filter screen 15, and the rotating shaft 6 drives the cleaning brush 9 to rotate when rotating, so that one side of the dust and the impurities accumulated on the filter screen 15 is automatically cleaned, the dust and the impurities are prevented from being accumulated too much to block an air inlet, and the heat dissipation inside the motor is further ensured. After a period of use, the cold plate 11 and the cleaning brush 18 may be removed for replacement to ensure heat dissipation and cleaning.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an explosion-proof machine, its includes rotor, explosion-proof housing, the rotor suit is in the pivot, explosion-proof housing's top sets up the terminal box, be provided with the air intake on heat dissipation mouth, the rear end cap on the front end housing of explosion-proof housing, the pivot pierces through front end housing and rear end cap setting, the fan is established to pivot rear end housing, a serial communication port, the rotor with be equipped with the cold drawing standing groove between the fan, be provided with the notch of getting the cold drawing standing groove in the rear end cap cylinder part, be equipped with sealed lid on the cold drawing standing groove.

2. An explosion-proof electrical machine according to claim 1, wherein: the end part outer side of the rear end cover is provided with a filter screen and a cleaning brush, the rear end cover is provided with a bearing matched with the rotating shaft, the bearing is sleeved with the filter screen, and the cleaning brush is fixedly connected with the end part of the rotating shaft.

3. An explosion proof electric machine as defined in claim 2, wherein: and a water absorption sponge is arranged below the cold plate placing groove.

4. An explosion proof machine as defined in claim 3, wherein: the sealing cover is internally provided with a sealing ring, and the sealing cover is provided with a handle.

5. An explosion-proof electric machine according to any one of claims 1 to 4, characterized in that: and a dustproof net is arranged at the air outlet of the heat dissipation opening.