An explosion-proof three-phase asynchronous motor

Abstract

The application belongs to the technical field of three-phase asynchronous motors, in particular to an explosion-proof three-phase asynchronous motor, which comprises a shell, the end of the shell is provided with a heat dissipation shell, and the lower part of the shell is provided with a cushion plate; a pair of air inlet pipes are symmetrically and communicatively arranged on the two sides of the heat dissipation shell; the explosion-proof three-phase asynchronous motor is provided with a filtering assembly in the air receiving box, in use, the first air pump draws the air outside into the air receiving box, the air is filtered by the filtering assembly in the air receiving box, then enters the heat dissipation shell through the air inlet pipe, and finally is discharged from the heat dissipation holes on the side of the heat dissipation shell, and the motor is cooled in the process; the dust in the air is filtered by the filtering assembly in the air receiving box, so that the dust is prevented from entering the motor and affecting the use of the motor, and the motor is prevented from malfunctioning due to a large amount of dust in the motor.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of three-phase asynchronous motors, in particular to an explosion-proof three-phase asynchronous motor. BACKGROUND

[0002] Three-phase asynchronous motor is a kind of induction motor, which is powered by simultaneously connecting 380V three-phase alternating current. Since the rotor and the stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction at different speeds, there is a slip, so it is called three-phase asynchronous motor. The speed of the rotor of the three-phase asynchronous motor is lower than that of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion with the magnetic field, and interacts with the magnetic field to generate electromagnetic torque, realizing energy conversion.

[0003] The existing patent with the publication number CN211579742U relates to a dust explosion-proof three-phase asynchronous motor in the related field of three-phase asynchronous motors, aiming to solve the problem that the existing technology cannot provide strong physical performance. The device shell comprises a wear-resistant layer, the lower end of which is provided with a first adhesive layer, the lower end of which is provided with a hard alloy layer, the wear-resistant layer and the hard alloy layer are connected through the first adhesive layer, the lower end of the hard alloy layer is provided with a second adhesive layer, the material of the second adhesive layer and the first adhesive layer is consistent, the lower end of the second adhesive layer is provided with a heat insulation layer, and the hard alloy layer and the heat insulation layer are connected through the second adhesive layer.

[0004] The above-mentioned patent sets up a wear-resistant layer, a hard alloy layer and a heat insulation layer, so that the device shell of the entire three-phase asynchronous motor obtains strong physical performance, thereby prolonging the service life of the entire three-phase asynchronous motor to a certain extent. However, in actual use, when the three-phase asynchronous motor works in an environment with a lot of dust, such as a coal mine, the three-phase asynchronous motor needs to be pumped to the inside and then discharged for cooling operation. When the motor pumps, the dust particles in the air are pumped into the motor at the same time, which affects the use of the motor and causes the motor to be prone to failure.

[0005] Therefore, the application provides an explosion-proof three-phase asynchronous motor. SUMMARY

[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem in the background art.

[0007] The technical scheme adopted by the application to solve the technical problems is: the explosion-proof three-phase asynchronous motor comprises a shell, a heat dissipation shell is arranged at the end of the shell, and a pad plate is arranged below the shell.

[0008] The both sides of the heat dissipation shell are symmetrically and communicatively provided with a pair of air inlet pipes; the end of the air inlet pipe away from the heat dissipation shell is communicatively provided with an air receiving box, the inside of the air receiving box is provided with a filter assembly; the end of the air receiving box away from the heat dissipation shell is provided with a first air pump, and the output end of the first air pump is in communication with the air receiving box.

[0009] Preferably, the filter assembly comprises a pair of frames, the inside of the frame is provided with a filter screen, and the pair of frames are symmetrically arranged in the inside of the air receiving box; the top end of the frame is provided with a connecting frame; the connecting frame penetrates to the outside of the air receiving box, the end of the air receiving box outside is provided with a hydraulic cylinder, the hydraulic cylinder shell part is mounted on the side of the air receiving box, and the output end is connected with the end of the connecting frame; the lower part of the air receiving box is provided with a cleaning box.

[0010] Preferably, the end of the cleaning box is provided with a driving motor, the output end of the driving motor penetrates to the inside of the cleaning box, and the end of the output end of the driving motor is provided with a stirring fan blade.

[0011] Preferably, the side of the cleaning box is provided with an oscillator, the output end of the oscillator penetrates to the inside of the cleaning box; the end of the output end of the oscillator is provided with a percussion block.

[0012] Preferably, the inside of the cleaning box is provided with a jet head, the side of the cleaning box is provided with a second air pump; the second air pump and the jet head are communicatively provided with a pipeline.

[0013] Preferably, the side of the cleaning box is provided with a water pump, the output end of the water pump penetrates to the inside of the cleaning box, the input end of the water pump is communicatively provided with a water inlet pipe, and the water inlet pipe is connected with a clean water source; the bottom end of the cleaning box is provided with a solenoid valve, and the output end of the solenoid valve is communicatively provided with a drain pipe.

[0014] Preferably, when the cleaning box discharges liquid water through the solenoid valve, the water pump synchronously injects liquid water into the cleaning box.

[0015] Preferably, the top end of the base plate is symmetrically provided with a pair of isolation covers based on the heat dissipation shell; the isolation cover isolates the structures on the both sides of the heat dissipation shell; and the water inlet pipe, the drain pipe, the air inlet pipe and the input end of the first air pump penetrate the isolation cover.

[0016] Preferably, the input end of the first air pump is provided with a filter plate.

[0017] Preferably, the isolation cover is prepared by heat-conducting plastic.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. The explosion-proof three-phase asynchronous motor, through the filter assembly, the filter assembly is located in the receiving air box, in use, the first air pump draws the air outside into the receiving air box, filters through the filter assembly inside the receiving air box, then enters the heat dissipation shell through the air inlet pipe, and finally is discharged from the heat dissipation hole opened on the side of the heat dissipation shell, in the process, the motor is cooled; the dust in the air is filtered through the filter assembly inside the receiving air box, so that the dust is prevented from entering the motor and affecting the use of the motor, and the motor is prevented from being damaged due to a large amount of dust inside.

[0020] 2. The explosion-proof three-phase asynchronous motor, through the jet head, in use, the second air pump fills the jet head with air through the pipe, when the frame drives the filter screen to move towards the inside of the receiving air box, the airflow sprayed from the nozzle of the jet head acts on the filter screen, and the water on the filter screen is dispersed, so that the water is prevented from entering the inside of the receiving air box and being driven into the motor along with the filter screen; the motor is protected; it should be noted that the liquid water level in the cleaning box is below the jet head; and the air inlet end of the second air pump is in communication with the area above the water level inside the cleaning box. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described below with reference to the drawings.

[0022] Figure 1 is a position diagram of the isolation cover of the application;

[0023] Figure 2 is a three-dimensional schematic view of the application;

[0024] Figure 3 is a schematic view of the structure on the receiving air box of the application;

[0025] Figure 4 is a schematic view of the structure on the cleaning box of the application;

[0026] Figure 5 is a schematic view of the structure on the frame of the application;

[0027] Figure 6 is a schematic view of the internal structure of the cleaning box of the application;

[0028] Figure 7 is a schematic view of the stirring fan blade of the application;

[0029] Figure 8 is a schematic view of the impact block of the application;

[0030] Figure 9 is a schematic view of the jet head of the application;

[0031] Figure 10 is a schematic view of the bottom end structure of the cleaning box of the application.

[0032] In the diagram: 1. Housing; 11. Pad; 12. Heat sink; 2. Air receiving box; 21. Air inlet pipe; 22. First air pump; 23. Hydraulic cylinder; 24. Connecting frame; 25. Frame; 26. Filter screen; 3. Cleaning box; 31. Drive motor; 32. Agitator blade; 33. Oscillator; 34. Impact block; 35. Jet nozzle; 36. Conduit; 37. Second air pump; 4. Water pump; 41. Water inlet pipe; 5. Solenoid valve; 51. Drain pipe; 6. Isolation cover; 61. Filter plate. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1 to 3 As shown, an explosion-proof three-phase asynchronous motor according to an embodiment of the present invention includes a housing 1, a heat dissipation shell 12 is provided at the end of the housing 1, and a pad 11 is provided at the bottom of the housing 1.

[0035] A pair of air inlet pipes 21 are symmetrically arranged on both sides of the heat sink 12 and connected to each other; an air receiving box 2 is connected to the end of the air inlet pipe 21 away from the heat sink 12, and a filter assembly is arranged inside the air receiving box 2; a first air pump 22 is arranged at the end of the air receiving box 2 away from the heat sink 12, and the output end of the first air pump 22 is connected to the air receiving box 2.

[0036] In practical applications, when a three-phase asynchronous motor operates in a dusty environment, such as a coal mine, it needs to draw air into its interior for cooling. During this process, dust particles are simultaneously drawn into the motor, affecting its operation and potentially causing malfunctions. To address this issue, this embodiment of the invention incorporates a filter assembly. When the three-phase asynchronous motor is operating, the first air pump 22 draws outside air into the air receiving box 2. After being filtered by the filter assembly inside the air receiving box 2, the air enters the heat sink 12 through the air inlet pipe 21 and is finally discharged through the heat dissipation holes on the side of the heat sink 12. This process cools the motor. The dust particles in the air are filtered by the filter assembly inside the air receiving box 2, preventing them from entering the motor and affecting its operation, thus preventing malfunctions caused by excessive internal dust.

[0037] like Figures 1 to 7As shown, the filter assembly includes a pair of frames 25, the inside of the frame 25 is provided with a filter screen 26, a pair of frames 25 is symmetrically arranged in the inside of the receiving gas box 2;The top end of the frame 25 is provided with a connecting frame 24;The connecting frame 24 penetrates to the outside of the receiving gas box 2, and the end part outside the receiving gas box 2 is provided with a hydraulic cylinder 23, the hydraulic cylinder 23 is installed on the side of the receiving gas box 2, and the output end is connected with the end part of the connecting frame 24;The lower part of the receiving gas box 2 is provided with a cleaning box 3;When the filter assembly is used, the hydraulic cylinder 23 intermittently drives the frame 25 to the inside of the cleaning box 3 through the connecting frame 24, and the dust filtered by the filter screen 26 in the frame 25 is washed by the liquid water in the cleaning box 3;The whole process ensures that there is always a filter screen 26 in the receiving gas box 2 for filtering dust in the air, so as to ensure the continuity of the use of the filter assembly.

[0038] The end part of the cleaning box 3 is provided with a driving motor 31, the output end of the driving motor 31 penetrates into the inside of the cleaning box 3, and the end part of the output end of the driving motor 31 is provided with a stirring fan blade 32;In use, the driving motor 31 is started, the output end of the driving motor 31 drives the stirring fan blade 32 to rotate in the inside of the cleaning box 3, and then drives the liquid water in the inside of the cleaning box 3 to flow, thereby improving the cleaning efficiency of the liquid water in the cleaning box 3 to the filter screen 26.

[0039] The side of the cleaning box 3 is provided with an oscillator 33, and the output end of the oscillator 33 penetrates into the inside of the cleaning box 3;The end part of the output end of the oscillator 33 is provided with a striking block 34;In use, the oscillator 33 is started, and the oscillator 33 drives the striking block 34 to intermittently strike the frame 25, so that the frame 25 drives the filter screen 26 to oscillate, and then further improves the cleaning efficiency of the filter screen 26.

[0040] As shown in the figure, Figures 6 to 10 The inside of the cleaning box 3 is provided with a jet head 35, and the side of the cleaning box 3 is provided with a second air pump 37;The second air pump 37 and the jet head 35 are communicated with a conduit 36;In use, the second air pump 37 fills the jet head 35 with air through the conduit 36, and when the frame 25 drives the filter screen 26 to move to the inside of the receiving gas box 2, the gas stream sprayed from the nozzle of the jet head 35 acts on the filter screen 26, disperses the water on the filter screen 26, and avoids the water from entering the inside of the receiving gas box 2 with the filter screen 26 and being driven into the motor;Protect the motor;It should be pointed out that the liquid water level in the cleaning box 3 is below the jet head 35;And the air inlet end of the second air pump 37 is communicated with the area above the water level in the inside of the cleaning box 3.

[0041] The side of the cleaning box 3 is provided with a water pump 4, the output end of the water pump 4 penetrates into the inside of the cleaning box 3, the input end of the water pump 4 is communicated with a water inlet pipe 41, the water inlet pipe 41 is connected with a clean water source; the bottom end of the cleaning box 3 is provided with a solenoid valve 5, the output end of the solenoid valve 5 is communicated with a drain pipe 51; after the liquid water in the cleaning box 3 is used for a period of time, the solenoid valve 5 is opened; the liquid water in the cleaning box 3 is discharged through the drain pipe 51; then the water pump 4 is started, the clean liquid water is extracted into the inside of the cleaning box 3 through the water inlet pipe 41, the replacement of the liquid water in the cleaning box 3 is realized, and the cleaning effect of the filter screen 26 is ensured.

[0042] When the cleaning box 3 discharges the liquid water through the solenoid valve 5, the water pump 4 synchronously injects the liquid water into the cleaning box 3; the dust and impurities remaining in the cleaning box 3 are completely cleaned.

[0043] As shown in Figures 1 to 2 The top end of the backing plate 11 is symmetrically provided with a pair of isolation covers 6 based on the heat dissipation shell 12; the isolation cover 6 isolates the structures on both sides of the heat dissipation shell 12; and the water inlet pipe 41, the drain pipe 51, the air inlet pipe 21 and the input end of the first air pump 22 penetrate through the isolation cover 6; the isolation cover 6 isolates the connecting structure of the air receiving box 2 and the cleaning box 3, avoids the dust in the air from affecting the work of the first air pump 22 and other components.

[0044] The input end of the first air pump 22 is provided with a filter plate 61; the filter plate 61 can filter the large-size particles in the air, avoids the large-size particles from entering into the air receiving box 2 and affecting the normal use of the filter screen 26.

[0045] The isolation cover 6 is prepared by heat-conducting plastic; the heat dissipation demand of the first air pump 22 and other components is met.

[0046] In use, when the three-phase asynchronous motor is working, the first air pump 22 is started, and the first air pump 22 draws air outside into the receiving air box 2, and then the air is filtered by the filter assembly in the receiving air box 2, and then enters the heat dissipation shell 12 through the air inlet pipe 21, and finally is discharged from the heat dissipation holes formed in the side of the heat dissipation shell 12, so that the motor is cooled in the process; the dust in the air is filtered by the filter assembly in the receiving air box 2, so that the dust does not enter the motor and affect the use of the motor, and the motor is prevented from being damaged due to a large amount of dust in the motor; wherein when the filter assembly is used, the hydraulic cylinder 23 intermittently drives the frame 25 into the cleaning box 3 through the connecting frame 24, and the dust filtered by the filter screen 26 in the frame 25 is washed by the liquid water in the cleaning box 3; the whole process ensures that there is always a filter screen 26 in the receiving air box 2 for filtering dust in the air, so that the continuity of the use of the filter assembly is ensured.

[0047] In use, the driving motor 31 is started, the output end of the driving motor 31 drives the stirring fan blade 32 to rotate in the cleaning box 3, thereby driving the liquid water in the cleaning box 3 to flow, and the cleaning efficiency of the liquid water in the cleaning box 3 on the filter screen 26 is improved; wherein in use, the oscillator 33 is started, the oscillator 33 drives the impact block 34 to intermittently impact the frame 25, so that the frame 25 drives the filter screen 26 to vibrate, thereby further improving the cleaning efficiency of the filter screen 26; wherein in use, the second air pump 37 inflates the air jet head 35 through the conduit 36, when the frame 25 drives the filter screen 26 to move into the receiving air box 2, the air jet head 35 sprays air flow on the filter screen 26, and the water on the filter screen 26 is dispersed, so that the water does not enter the receiving air box 2 with the filter screen 26 and is driven into the motor; the motor is protected; it should be noted that the liquid water level in the cleaning box 3 is below the air jet head 35; and the second air pump 37 is communicated with the area above the water level in the cleaning box 3; wherein after the liquid water in the cleaning box 3 is used for a period of time, the electromagnetic valve 5 is opened; the liquid water in the cleaning box 3 is discharged through the drain pipe 51; then the water pump 4 is started, and clean liquid water is drawn into the cleaning box 3 through the water inlet pipe 41, so that the liquid water in the cleaning box 3 is replaced, and the cleaning effect of the filter screen 26 is ensured.

[0048] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof three-phase asynchronous motor, characterized by the fact that: Including the shell (1), the end of the shell (1) is provided with a heat dissipation shell (12), the lower part of the shell (1) is provided with a cushion plate (11); The two sides of the heat dissipation shell (12) are symmetrically and continuously provided with a pair of air inlet pipes (21); the end of the air inlet pipe (21) away from the heat dissipation shell (12) is continuously provided with a gas receiving box (2), the inside of the gas receiving box (2) is provided with a filter assembly; the end of the gas receiving box (2) away from the heat dissipation shell (12) is provided with a first air pump (22), the output end of the first air pump (22) is communicated with the gas receiving box (2); The filter assembly includes a pair of frames (25), the inside of the frame (25) is provided with a filter screen (26), a pair of the frame (25) is symmetrically arranged in the inside of the gas receiving box (2); the top end of the frame (25) is provided with a connecting frame (24); the connecting frame (24) penetrates to the outside of the gas receiving box (2), the end part of the connecting frame (24) located outside the gas receiving box (2) is provided with a hydraulic cylinder (23), the shell part of the hydraulic cylinder (23) is mounted on the side of the gas receiving box (2), the output end is connected with the end of the connecting frame (24); the lower part of the gas receiving box (2) is provided with a cleaning tank (3); When the filter assembly is used, the hydraulic cylinder (23) intermittently drives the frame (25) into the inside of the cleaning tank (3) through the connecting frame (24), the filter screen (26) in the frame (25) filters the dust which is washed by the liquid water in the cleaning tank (3); the whole process ensures that there is always a filter screen (26) in the gas receiving box (2) for filtering the dust in the air; The end of the cleaning tank (3) is provided with a driving motor (31), the output end of the driving motor (31) penetrates into the inside of the cleaning tank (3), the end of the output end of the driving motor (31) is provided with a stirring fan blade (32); The side of the cleaning tank (3) is provided with an oscillator (33), the output end of the oscillator (33) penetrates into the inside of the cleaning tank (3); the end of the output end of the oscillator (33) is provided with a striking block (34); The inside of the cleaning tank (3) is provided with a jet head (35), the side of the cleaning tank (3) is provided with a second air pump (37); the second air pump (37) and the jet head (35) are continuously provided with a pipe (36); The side of the cleaning tank (3) is provided with a water pump (4), the output end of the water pump (4) penetrates into the inside of the cleaning tank (3), the input end of the water pump (4) is continuously provided with a water inlet pipe (41), the water inlet pipe (41) is connected with a clean water source; the bottom end of the cleaning tank (3) is provided with a solenoid valve (5), the output end of the solenoid valve (5) is continuously provided with a drain pipe (51); When the cleaning tank (3) discharges the liquid water through the solenoid valve (5), the water pump (4) synchronously injects the liquid water into the cleaning tank (3).

2. The explosion-proof three-phase asynchronous motor according to claim 1, characterized in that: The top end of the base plate (11) is symmetrically provided with a pair of isolation covers (6) based on the heat dissipation shell (12); the isolation covers (6) isolate the structures on both sides of the heat dissipation shell (12); and the water inlet pipe (41), the drain pipe (51), the air inlet pipe (21) and the input end of the first air pump (22) penetrate through the isolation covers (6).

3. The explosion-proof three-phase asynchronous motor according to claim 2, characterized in that: The input end of the first air pump (22) is provided with a filter plate (61).

4. The explosion-proof three-phase asynchronous motor according to claim 3, characterized in that: The isolation covers (6) are made of heat-conducting plastic.

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