Explosion-proof structure of motor

Abstract

The utility model discloses a motor explosion-proof structure, which comprises an explosion-proof shell, the upper surface of the explosion-proof shell is fixedly connected with a junction box, the inner wall of the explosion-proof shell is fixedly connected with two connecting rings, the inner walls of the two connecting rings are jointly and fixedly connected with a stator, the left side surface of the explosion-proof shell is fixedly connected with a front end cover, and the front end cover is fixedly connected with a rear end of the explosion-proof shell. And the right side surface of the explosion-proof shell is fixedly connected with a rear end cover. According to the device, heat of the inner wall of the anti-explosion shell can be transferred into the cavity through a heat conduction ring and a heat conduction plate, an impeller can rotate along with equipment when the equipment works, external air is extracted in cooperation with a sealing shell and an air inlet, the air is injected into the cavity through a bent pipe, and the heat conduction effect is improved. Therefore, the air flows in the air and exchanges heat with the explosion-proof shell and the heat conducting plate, and heat can be discharged from the exhaust holes along with the air along with injection of the air, so that the temperature of the motor during working is effectively reduced, and explosion of the motor is avoided.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to an explosion-proof structure of a motor. Background Technique

[0002] The motor, commonly known as the motor, is an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. The motor generally includes a stator and a rotor. The stator includes a stator core and a coil winding wound around the stator core. The rotor includes a rotating shaft and a rotor core sleeved on the rotating shaft. A permanent magnet is provided on the outer edge of the rotor core. The motor is generally divided into a DC motor and an AC motor.

[0003] As a commonly used component on electrical equipment, the motor has a relatively wide range of applications. Although the current-stage motor can drive the equipment to rotate during use, there are still some deficiencies during the use process. For example, when the motor operates at high power and for a long time, the heat dissipated by the motor is difficult to effectively dissipate, resulting in overheating of the winding or insulating material, so that the motor is in a high-temperature state for a long time, and there is a risk of explosion of the motor.

[0004] Therefore, we propose an explosion-proof structure of a motor to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an explosion-proof structure of a motor to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An explosion-proof structure of a motor, including an explosion-proof housing, a junction box is fixedly connected to the upper surface of the explosion-proof housing, two connecting rings are fixedly connected to the inner wall of the explosion-proof housing, a stator is fixedly connected to the inner walls of the two connecting rings together, a front end cover is fixedly connected to the left side surface of the explosion-proof housing, a rear end cover is fixedly connected to the right side surface of the explosion-proof housing, a rotating shaft is rotatably connected to the inner walls of the front end cover and the rear end cover together, a rotor is fixedly connected to the outer surface of the rotating shaft, a cavity is opened on the right side surface of the explosion-proof housing, a heat-conducting ring is fixedly connected to the inner wall of the explosion-proof housing, a group of heat-conducting plates are arranged inside the cavity, and one side surface of each heat-conducting plate close to the heat-conducting ring penetrates through the explosion-proof housing and is fixedly connected to the outer surface of the heat-conducting ring, a sealing housing is fixedly connected to the right side surface of the rear end cover, an impeller is arranged inside the rear end cover, the left side surface of the impeller is fixedly connected to the right end of the rotating shaft, an air inlet is opened on the bottom surface of the sealing housing, a bent pipe is fixedly communicated with the upper surface of the sealing housing, and the end of the bent pipe far away from the sealing housing penetrates through the explosion-proof housing and extends into the cavity, and a group of exhaust holes are opened on the outer surface of the explosion-proof housing.

[0008] In a further embodiment, two arc-shaped plates are fixedly connected to the outer surface of the explosion-proof housing, and a dust-proof net is fixedly connected to the side surfaces of the two arc-shaped plates close to each other.

[0009] In a further embodiment, an air inlet pipe is fixedly connected to the outer surface of the sealing housing, and a filter screen is fixedly connected to the inner wall of the air inlet pipe.

[0010] In a further embodiment, two groups of top blocks are fixedly connected to the inner wall of the cavity, and the two groups of top blocks are arranged alternately with a group of heat conducting plates.

[0011] In a further embodiment, two groups of support frames are fixedly connected to the outer surface of the explosion-proof housing, and a base is fixedly connected to the bottom surfaces of the two groups of support frames.

[0012] In a further embodiment, a support plate is fixedly connected to the upper surface of the base, and the upper surface of the support plate is in contact with the outer surface of the explosion-proof housing.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By providing a heat conducting ring and heat conducting plates, the present device can transfer the heat on the inner wall of the explosion-proof housing to the inside of the cavity. And the impeller can rotate along with the device during the operation of the device. Cooperating with the sealing housing and the air inlet, the device extracts the external air, injects the air into the cavity through the elbow pipe, so that the air flows inside the air, exchanges heat with the explosion-proof housing and the heat conducting plates. And with the injection of the air, the heat can be discharged from the exhaust hole along with the air, thereby effectively reducing the temperature of the motor during operation and avoiding the explosion of the motor.

[0015] The present device can filter the extracted air through the air inlet pipe and the filter screen, prevent dust from entering the device, avoid the exhaust hole being blocked by dust. The top blocks can support the explosion-proof housing, prevent the explosion-proof housing from deforming during long-term use. The base can facilitate the installation of the device, and the junction box is convenient for connecting with electric wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structure diagram of the motor explosion-proof structure.

[0017] Figure 2 It is a three-dimensional structure diagram of the side sectional view of the sealing housing in the motor explosion-proof structure.

[0018] Figure 3 It is a three-dimensional structure diagram of the front sectional view of the motor explosion-proof structure.

[0019] Figure 4 It is a three-dimensional structure diagram of the side sectional view of the motor explosion-proof structure.

[0020] In the figure: 1. Explosion-proof housing; 2. Junction box; 3. Elbow; 4. Rear end cover; 5. Dust-proof net; 6. Arc plate; 7. Rotating shaft; 8. Front end cover; 9. Support frame; 10. Base; 11. Sealing housing; 12. Intake pipe; 13. Exhaust hole; 14. Support plate; 15. Intake port; 16. Dust-proof net; 17. Impeller; 18. Connecting ring; 19. Rotor; 20. Stator; 21. Heat-conducting ring; 22. Top block; 23. Heat-conducting plate; 24. Cavity. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 In the present invention, an explosion-proof structure of a motor includes an explosion-proof housing 1. A junction box 2 is fixedly connected to the upper surface of the explosion-proof housing 1. Two connecting rings 18 are fixedly connected to the inner wall of the explosion-proof housing 1. A stator 20 is fixedly connected to the inner walls of the two connecting rings 18. A front end cover 8 is fixedly connected to the left side surface of the explosion-proof housing 1. A rear end cover 4 is fixedly connected to the right side surface of the explosion-proof housing 1. A rotating shaft 7 is rotatably connected to the inner walls of the front end cover 8 and the rear end cover 4. A rotor 19 is fixedly connected to the outer surface of the rotating shaft 7. A cavity 24 is formed on the right side surface of the explosion-proof housing 1. A heat-conducting ring 21 is fixedly connected to the inner wall of the explosion-proof housing 1. A group of heat-conducting plates 23 are arranged inside the cavity 24. One side surface of each heat-conducting plate 23 close to the heat-conducting ring 21 penetrates through the explosion-proof housing 1 and is fixedly connected to the outer surface of the heat-conducting ring 21. A sealing housing 11 is fixedly connected to the right side surface of the rear end cover 4. An impeller 17 is arranged inside the rear end cover 4. The left side surface of the impeller 17 is fixedly connected to the right end of the rotating shaft 7. An intake port 15 is formed on the bottom surface of the sealing housing 11. A bent pipe 3 is fixedly communicated with the upper surface of the sealing housing 11. One end of the bent pipe 3 away from the sealing housing 11 penetrates through the explosion-proof housing 1 and extends into the cavity 24. A group of exhaust holes 13 are formed on the outer surface of the explosion-proof housing 1.

[0023] In this embodiment, two arc-shaped plates 6 are fixedly connected to the outer surface of the explosion-proof housing 1. A dust-proof net 5 is fixedly connected to the side surfaces of the two arc-shaped plates 6 that are close to each other. By providing the arc-shaped plates 6 and the dust-proof net 5, the falling dust can be blocked to prevent the dust from entering the inside of the exhaust hole 13 and causing the blockage of the exhaust hole 13. An air inlet pipe 12 is fixedly connected to the outer surface of the sealing housing 11, and a filter screen 16 is fixedly connected to the inner wall of the air inlet pipe 12. By providing the air inlet pipe 12 and the filter screen 16, the dust can be blocked to prevent the dust from entering during air extraction.

[0024] In this embodiment, two groups of top blocks 22 are fixedly connected to the inner wall of the cavity 24. The two groups of top blocks 22 are arranged alternately with a group of heat-conducting plates 23. The top blocks 22 can support the cavity 24 and can also shunt the air, so that the air can flow more evenly. Two groups of support frames 9 are fixedly connected to the outer surface of the explosion-proof housing 1. The bottom surfaces of the two groups of support frames 9 are fixedly connected to a base 10. By providing the support frames 9 and the base 10, the device can be supported and it is convenient to connect the device to other equipment. A support plate 14 is fixedly connected to the upper surface of the base 10, and the upper surface of the support plate 14 is in contact with the outer surface of the explosion-proof housing 1. By providing the support plate 14, the explosion-proof housing 1 can be supported, making the force on the explosion-proof housing 1 more uniform and preventing the explosion-proof housing 1 from deforming during use.

[0025] The working principle of the present utility model is:

[0026] During use, through the cooperation of the stator 20 and the rotor 19, the rotating shaft 7 can be rotated. The rotating shaft 7 drives the impeller 17 to rotate. The impeller 17 rotates inside the sealing housing 11, generating suction to extract external air through the air inlet 15, and discharging the air into the cavity 24 by using the elbow pipe 3, so that the air flows inside the cavity 24. At the same time, the heat-conducting ring 21 absorbs the heat inside the explosion-proof housing 1 and conducts it to the heat-conducting plate 23, enabling the air to exchange heat when it contacts the heat-conducting plate 23, so that the heat can be discharged from the device through the exhaust hole 13 along with the air, reducing the temperature of the device and preventing the motor from exploding.

[0027] In addition, it should be understood that although this specification is described according to embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An explosion-proof structure of an electric motor, characterized in that: It includes an explosion-proof housing (1), a junction box (2) is fixedly connected to the upper surface of the explosion-proof housing (1), two connecting rings (18) are fixedly connected to the inner wall of the explosion-proof housing (1), a stator (20) is fixedly connected to the inner walls of the two connecting rings (18) together, a front end cover (8) is fixedly connected to the left side surface of the explosion-proof housing (1), a rear end cover (4) is fixedly connected to the right side surface of the explosion-proof housing (1), a rotating shaft (7) is rotatably connected to the inner walls of the front end cover (8) and the rear end cover (4) together, a rotor (19) is fixedly connected to the outer surface of the rotating shaft (7), a cavity (24) is formed on the right side surface of the explosion-proof housing (1), a heat-conducting ring (21) is fixedly connected to the inner wall of the explosion-proof housing (1), a group of heat-conducting plates (23) are arranged inside the cavity (24), one side surface of each heat-conducting plate (23) close to the heat-conducting ring (21) penetrates through the explosion-proof housing (1) and is fixedly connected to the outer surface of the heat-conducting ring (21), a sealing housing (11) is fixedly connected to the right side surface of the rear end cover (4), an impeller (17) is arranged inside the rear end cover (4), the left side surface of the impeller (17) is fixedly connected to the right end of the rotating shaft (7), an air inlet (15) is formed on the bottom surface of the sealing housing (11), a bent pipe (3) is fixedly communicated with the upper surface of the sealing housing (11), one end of the bent pipe (3) away from the sealing housing (11) penetrates through the explosion-proof housing (1) and extends into the cavity (24), and a group of exhaust holes (13) are formed on the outer surface of the explosion-proof housing (1).

2. The explosion-proof structure of an electric motor according to claim 1, characterized in that: Two arc-shaped plates (6) are fixedly connected to the outer surface of the explosion-proof housing (1), and a dust-proof net (5) is fixedly connected to the side surfaces of the two arc-shaped plates (6) close to each other.

3. An explosion-proof structure of an electric motor according to claim 1, characterized in that: An air inlet pipe (12) is fixedly connected to the outer surface of the sealing housing (11), and a filter screen (16) is fixedly connected to the inner wall of the air inlet pipe (12).

4. An explosion-proof structure of an electric motor according to claim 1, characterized in that: Two groups of top blocks (22) are fixedly connected to the inner wall of the cavity (24), and the two groups of top blocks (22) and a group of heat-conducting plates (23) are arranged in a staggered manner.

5. The explosion-proof structure of an electric motor according to claim 1, wherein: Two groups of support frames (9) are fixedly connected to the outer surface of the explosion-proof housing (1), and a base (10) is fixedly connected to the bottom surfaces of the two groups of support frames (9) together.

6. The explosion-proof structure of an electric motor according to claim 5, characterized in that: A support plate (14) is fixedly connected to the upper surface of the base (10), and the upper surface of the support plate (14) is in contact with the outer surface of the explosion-proof housing (1).

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