A motor rotor cleaning device

Abstract

The application belongs to the technical field of motor parts cleaning, and particularly relates to a motor rotor cleaning device, which comprises a tank body and a liquid discharge pipe fixedly plugged in the side wall of the tank body, one side of the tank body is provided with a controller, the side wall of the tank body is provided with a feeding opening and a discharging opening, and further comprises a rotating hollow plate arranged above the tank body and provided with a driving unit for driving the rotating hollow plate to rotate. The application can separately isolate and flush each rotor, so that the cleaning liquid fully contacts with the rotor to improve the cleaning effect, prevents the cleaning liquid from splashing and wasting, improves the utilization rate of the cleaning liquid, and enables the rotor to automatically rotate in the cleaning process, improves the fullness of cleaning the dead angle of the rotor, and can detect the cleaning waste liquid of each rotor, so that the cleaning time is reduced under the condition that the rotor is fully cleaned, the cleaning efficiency is improved, and the waste of the cleaning liquid is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of motor component cleaning technology, and in particular relates to a motor rotor cleaning device. Background Technology

[0002] Before the motor rotor is assembled into the main body, its surface is prone to contaminants such as dust, oil, and metal shavings from the production or maintenance process. These impurities can affect the fitting accuracy between the rotor and the stator, reduce the insulation performance of the motor, and may also cause vibration and wear during operation. Cleaning can remove contaminants and ensure the assembly accuracy, insulation performance, and operational stability of the motor.

[0003] For example, a motor rotor cleaning device disclosed in patent publication number CN116967192B cleans the motor rotor by spraying cleaning fluid through a nozzle. However, when this open cleaning device is in use, the cleaning fluid will immediately splash after being sprayed onto the rotor surface. On the one hand, the splashing of the cleaning fluid will cause a large amount of cleaning fluid to fail to fully contact the rotor, affecting the cleaning effect. On the other hand, the splashed cleaning fluid will evaporate faster, resulting in resource waste and easy pollution to the surrounding environment. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a motor rotor cleaning device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a motor rotor cleaning device, comprising a tank and a drain pipe fixedly inserted into the side wall of the tank, a controller being provided on one side of the tank, and a feed inlet and a discharge outlet being provided on the side wall of the tank, further comprising:

[0006] A rotating hollow plate is disposed above the tank body, and the tank body is equipped with a drive unit for driving the rotating hollow plate to rotate. A liquid inlet pipe is rotatably connected to the top of the rotating hollow plate.

[0007] Several flushing pipes are evenly distributed in a ring at the bottom of the rotating hollow plate and are connected to the rotating hollow plate. An upper pipe sleeve and a lower pipe sleeve are provided below the flushing pipes, and a connecting frame is fixed between the upper pipe sleeve and the pipe wall of the flushing pipe. A rotor self-rotation mechanism is installed inside the upper pipe sleeve and the lower pipe sleeve. A bottom cover is fixed at the bottom of the lower pipe sleeve, and the bottom cover has a drain hole. A pressure valve is installed inside the drain hole.

[0008] A walking support unit is installed inside the tank body and is used to open and close the upper and lower sleeves.

[0009] Several drainage detection units are installed on the inner side wall of the bottom of the tank for detecting the flushing liquid.

[0010] Preferably, the drive unit includes a U-shaped frame fixed to the inner side wall of the bottom of the tank, and a motor drive assembly electrically connected to the controller is installed on the top of the U-shaped frame, and the drive end of the motor drive assembly drives the rotating hollow plate to rotate.

[0011] Preferably, the rotor self-rotation mechanism includes a gear sleeve rotatably disposed inside the upper sleeve, a top pressure plate fixed inside the gear sleeve, a support plate rotatably connected inside the lower sleeve, both the support plate and the top pressure plate having leakage holes, a top pressure groove matching the rotor shaft being formed at the bottom of the top pressure plate, an insertion hole matching the rotor shaft being formed on the support plate, and a gear ring corresponding to the position of the gear sleeve being fixed on the inner side wall of the tank, and the gear ring meshing with the gear sleeve.

[0012] Preferably, the walking support unit includes a walking track fixed to the inner side wall of the tank, and the side wall of the bottom cover is rotatably connected to a walking wheel that rolls on the walking track. The upper sleeve and the lower sleeve are jointly equipped with a limit guide component. When the walking wheel passes the positions of the feed port and the discharge port, the walking wheel moves along the edges of the feed port and the discharge port under the action of the walking track.

[0013] Preferably, the limiting guide assembly includes an upper connecting block fixed to the outer wall of the upper sleeve, and a limiting slide rod fixed to the bottom of the upper connecting block; a lower connecting block is fixed to the outer wall of the lower sleeve, and the limiting slide rod slides through the lower connecting block; a limiting stop is fixed to the bottom of the limiting slide rod.

[0014] Preferably, the discharge detection unit includes a support rod fixed to the inner side wall of the bottom of the tank, and a liquid receiving cylinder is fixed to the top of the support rod. A discharge square tube is fixedly connected to the side wall of the discharge square tube, and an installation square tube is fixed to the outlet end of the discharge square tube. A turbidity detector is fixed inside the installation square tube, and the turbidity detector is electrically connected to the controller.

[0015] Preferably, multiple indicator lights are fixedly inserted into the side wall of the rotating hollow plate, and each indicator light corresponds to a flushing pipe. The controller controls the corresponding indicator light to work according to the electrical signal fed back by the turbidity detector.

[0016] Preferably, a plurality of return pipes are fixedly inserted into the bottom of the rotating hollow plate, and the return pipes correspond one-to-one with the flushing pipes. A return hollow plate is provided below the rotating hollow plate, and the return hollow plate is rotatably connected to the drive end of the motor drive assembly. A manifold is fixedly connected to the side wall of the return hollow plate. An electrically controlled valve is installed inside both the return pipe and the flushing pipe, and the electrically controlled valve is electrically connected to the controller.

[0017] Compared with existing technologies, the advantages of a motor rotor cleaning device are:

[0018] By coordinating the tank, drain pipe, controller, feed port, discharge port, rotating hollow plate, drive unit, inlet pipe, flushing pipe, upper sleeve, lower sleeve, and connecting frame, each rotor can be individually isolated and flushed. This ensures that the cleaning fluid comes into full contact with the rotor, improving the cleaning effect, while also preventing the cleaning fluid from splashing and wasting, thus increasing the utilization rate of the cleaning fluid.

[0019] The rotor self-rotation mechanism allows the rotor to rotate automatically during the cleaning process. Combined with the bottom cover, drain hole, and pressure valve, it can improve the thoroughness of cleaning the rotor's dead corners and further enhance the cleaning effect.

[0020] The walking support unit ensures that the upper and lower sleeves remain closed during the cleaning process, and automatically opens when moving to the loading and unloading ports, facilitating loading and unloading and improving cleaning convenience.

[0021] The waste liquid generated during the cleaning of each rotor can be detected by the set drainage detection unit, ensuring that the rotor is thoroughly cleaned and reducing the rotor cleaning time. This not only improves cleaning efficiency but also further reduces the waste of cleaning liquid. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a motor rotor cleaning device provided by the present invention;

[0023] Figure 2 This is a schematic diagram showing the positional distribution of the upper and lower sleeves of a motor rotor cleaning device provided by the present invention;

[0024] Figure 3 This is a schematic diagram of the bottom structure of the rotating hollow plate of a motor rotor cleaning device provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the upper and lower sleeves of a motor rotor cleaning device provided by the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the upper sleeve of a motor rotor cleaning device provided by the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of the lower sleeve of a motor rotor cleaning device provided by the present invention;

[0028] Figure 7 This is a schematic diagram of the drainage detection unit of a motor rotor cleaning device provided by the present invention;

[0029] Figure 8This is a partial internal structural diagram of the return pipe and flushing pipe of a motor rotor cleaning device provided by the present invention.

[0030] In the diagram: 1. Tank body; 2. Drain pipe; 3. Controller; 4. Feed port; 5. Discharge port; 6. Rotating hollow plate; 7. Drive unit; 71. U-shaped frame; 72. Motor drive assembly; 8. Inlet pipe; 9. Flushing pipe; 10. Upper pipe sleeve; 11. Lower pipe sleeve; 12. Connecting frame; 13. Rotor self-rotation mechanism; 131. Gear sleeve; 132. Top pressure plate; 133. Support plate; 134. Leakage hole; 135. Top pressure groove; 136. Insertion hole; 137. Gear ring; 14. Bottom cover; 15. Drain hole. 16 Pressure valve, 17 Walking support unit, 171 Walking track, 172 Walking wheel, 18 Drainage detection unit, 181 Support rod, 182 Liquid receiving cylinder, 183 Drainage square tube, 184 Installation square tube, 185 Turbidity detector, 19 Limiting guide assembly, 191 Upper connecting block, 192 Limiting slide bar, 193 Lower connecting block, 194 Limiting stop block, 20 Indicator light, 21 Return drain pipe, 22 Return drain hollow plate, 23 Manifold, 24 Electrically controlled valve. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-8 As shown, a motor rotor cleaning device includes a tank 1 and a drain pipe 2 fixedly inserted into the side wall of the tank 1. A controller 3 is provided on one side of the tank 1. The side wall of the tank 1 has a loading port 4 and a discharging port 5. The device also includes a rotating hollow plate 6, which is located above the tank 1. The tank 1 is equipped with a drive unit 7 for driving the rotating hollow plate 6 to rotate. The drive unit 7 includes a U-shaped frame 71 fixed to the inner side wall of the bottom of the tank 1. A motor drive assembly 72 electrically connected to the controller 3 is installed on the top of the U-shaped frame 71. The drive end of the motor drive assembly 72 drives the rotating hollow plate 6 to rotate. The motor drive assembly 72 includes components such as a motor, a drive shaft, bearings, and an encoder. The encoder mainly detects the rotation angle of the motor drive shaft.

[0033] A liquid inlet pipe 8 is rotatably connected to the top of the rotating hollow plate 6. Several flushing pipes 9 are evenly distributed in a ring at the bottom of the rotating hollow plate 6 and are connected to the rotating hollow plate 6. An upper sleeve 10 and a lower sleeve 11 are provided below the flushing pipes 9, and a connecting frame 12 is fixed between the upper sleeve 10 and the wall of the flushing pipe 9. A rotor self-rotation mechanism 13 is installed inside the upper sleeve 10 and the lower sleeve 11. A bottom cover 14 is fixed to the bottom of the lower sleeve 11, and the bottom cover 14 has a drain hole 15. A pressure valve 16 is installed inside the drain hole 15. The rotor self-rotation mechanism 13 includes a gear sleeve that is rotatably disposed inside the upper sleeve 10. 131, a top pressure plate 132 is fixed inside the gear sleeve 131, and a support plate 133 is rotatably connected inside the lower tube sleeve 11. Both the support plate 133 and the top pressure plate 132 are provided with leakage holes 134. The bottom of the top pressure plate 132 is provided with a top pressure groove 135 that matches the rotor shaft. The support plate 133 is provided with a insertion hole 136 that matches the rotor shaft. A gear ring 137 corresponding to the position of the gear sleeve 131 is fixed on the inner side wall of the tank body 1, and the gear ring 137 meshes with the gear sleeve 131. When the gear sleeve 131 moves along the inner wall of the gear ring 137, the gear sleeve 131 can move and rotate at the same time.

[0034] The traveling support unit 17 is installed inside the tank body 1 and is used to open and close the upper sleeve 10 and the lower sleeve 11. The traveling support unit 17 includes a traveling track 171 fixed to the inner wall of the tank body 1. The side wall of the bottom cover 14 is rotatably connected to a traveling wheel 172 that rolls on the traveling track 171. The upper sleeve 10 and the lower sleeve 11 are jointly equipped with a limit guide assembly 19. When the traveling wheel 172 passes the positions of the feed port 4 and the discharge port 5, the traveling wheel 172 moves along the traveling track 171. Under the action of 1, it moves along the edge of the feed inlet 4 and the feed outlet 5. The limiting guide component 19 includes an upper connecting block 191 fixed to the outer wall of the upper sleeve 10, and a limiting slide rod 192 fixed at the bottom of the upper connecting block 191. A lower connecting block 193 is fixed to the outer wall of the lower sleeve 11, and the limiting slide rod 192 slides through the lower connecting block 193. A limiting stop block 194 is fixed at the bottom of the limiting slide rod 192, which can ensure the precise docking of the upper sleeve 10 and the lower sleeve 11.

[0035] Several drainage detection units 18 are installed on the inner side wall of the bottom of the tank 1 for detecting the rinsing liquid. Each drainage detection unit 18 includes a support rod 181 fixed to the inner side wall of the bottom of the tank 1, and a receiving cylinder 182 is fixed to the top of the support rod 181. A drainage square tube 183 is fixedly connected to the side wall of the receiving cylinder 182, and a mounting square tube 184 is fixed to the outlet end of the drainage square tube 183. A turbidity detector 185 is fixed inside the mounting square tube 184, and the turbidity detector 185 is electrically connected to the controller 3. The turbidity detector 185 can calculate the turbidity of the cleaning liquid by emitting light and the receiving end calculating the intensity of the received light. When the turbidity exceeds the threshold, it feeds back an electrical signal to the controller 3. The threshold can be set according to the average turbidity of the cleaning liquid used.

[0036] Multiple indicator lights 20 are fixedly inserted into the side wall of the rotating hollow plate 6, and each indicator light 20 corresponds to a flushing pipe 9. The controller 3 controls the corresponding indicator light 20 to work according to the electrical signal fed back by the turbidity detector 185, which can conveniently indicate the work.

[0037] Multiple return pipes 21 are fixedly inserted into the bottom of the rotating hollow plate 6, and the return pipes 21 correspond one-to-one with the flushing pipes 9. A return hollow plate 22 is provided below the rotating hollow plate 6, and the return hollow plate 22 is rotatably connected to the drive end of the motor drive assembly 72. A manifold 23 is fixedly connected to the side wall of the return hollow plate 22. Both the return pipes 21 and the flushing pipes 9 are equipped with electrically controlled valves 24, and the electrically controlled valves 24 are electrically connected to the controller 3, which can reduce the unnecessary waste of cleaning fluid.

[0038] The operating principle of this invention is explained as follows: The inlet pipe 8 is connected to the external cleaning fluid supply pipeline, the outlet pipe 2 is connected to the external cleaning fluid recovery pipeline, and the manifold 23 is connected to the cleaning fluid supply container. The controller 3 is started, and after starting, the controller 3 controls the motor drive assembly 72 to work according to a preset program (the motor drive assembly 72 includes components such as a motor, drive shaft, bearing, and encoder). The motor drive assembly 72 can drive the rotating hollow plate 6 to rotate a specific angle (this angle is set based on the number of flushing pipes 9), causing one of the flushing pipes 9 to rotate to the loading port 4. Initially, all the indicator lights 20 on the side wall of the rotating hollow plate 6 emit a color light (e.g., red) indicating that no rotor is installed. After the indicator light 20 is detected at the loading station at the loading port 4, the external loading robot places the rotor to be cleaned from the loading port 4 into the support plate 133 inside the lower sleeve 11, and the rotor shaft of the rotor is inserted into the insertion hole 136 of the support plate 133 (or the rotor can be manually placed by checking the color). Then, the electric... The drive assembly 72 will drive the rotating hollow plate 6 to rotate again according to the program. The support plate 133, on which the rotor has just been installed, will rotate synchronously. At this time, the traveling wheel 172 on the support plate 133 will move along the traveling track 171. Guided by the traveling track 171, the traveling wheel 172 will drive the lower tube sleeve 11 to move upward through the bottom cover 14. At this time, under the guiding sliding action of the upper connecting block 191, the limiting slide rod 192, and the lower connecting block 193, the lower tube sleeve 11 will move upward and eventually abut against the upper tube sleeve 10. At this time, the upper sleeve 10 and the lower sleeve 11 abut against each other. At this time, the top pressure plate 132 squeezes the upper shaft of the rotor through the top pressure groove 135, which will fix the rotor between the top pressure plate 132 and the support plate 133. At the same time, when the indicator light 20 at the flushing pipe 9 where the rotor is installed rotates away from the feed port 4, the light color of the indicator light 20 changes synchronously. At this time, the light color emitted by the indicator light 20 indicates that the rotor has been installed (e.g., green). Driven by the motor drive assembly 72, the rotor will be installed in each support plate 133.

[0039] After the rotor is installed, the controller 3 controls the external cleaning fluid supply equipment to supply cleaning fluid. Simultaneously, the controller 3 energizes and opens the electrically controlled valve 24 in the flushing pipe 9 where the rotor is installed. The external cleaning fluid enters the rotating hollow plate 6 through the inlet pipe 8 and is finally discharged into the upper sleeve 10 and lower sleeve 11 through the flushing pipe 9, thus flushing the rotor at that location. Meanwhile, as the rotating hollow plate 6 rotates, the gear sleeve 131 inside the upper sleeve 10 travels along the gear ring 137, and the gear sleeve 131 passes through the top pressure plate 132. The rotor is driven to rotate, which allows the cleaning fluid to come into full contact with the rotor. Secondly, since a pressure valve 16 is provided in the drain hole 15 of the bottom cover 14, the cleaning fluid that has just entered the lower sleeve 11 cannot be discharged. As the amount of cleaning fluid increases, the valve plate of the pressure valve 16 is opened under the action of hydraulic pressure. At this time, the cleaning fluid is discharged through the drain hole 15. Under the action of the pressure valve 16, the cleaning fluid can fill the lower sleeve 11 and the upper sleeve 10, preventing the cleaning fluid from being discharged quickly. Combined with the turbulence generated by the rotation of the rotor, the flushing and cleaning effect can be further improved.

[0040] Secondly, when the motor drive assembly 72 is paused, the controller 3 will control the turbidity detector 185 to operate. The cleaning fluid inside the lower sleeve 11, which is directly above the receiving cylinder 182, flows into the receiving cylinder 182 through the drain hole 15 and is finally discharged from the installation square pipe 184 through the drain square pipe 183. The turbidity detector 185 will detect the turbidity of the cleaning fluid flowing through the drain square pipe 183 (the turbidity detector 185 emits light, and the turbidity of the cleaning fluid can be calculated by calculating the light intensity received by the receiving end). When the turbidity of the cleaning fluid is too high, it means that the rotor has not been cleaned completely. When the turbidity of the cleaning fluid is normal, it means that the rotor has been cleaned completely. At this time, the turbidity detector 185 will send an electrical signal to the controller 3, and the controller 3 will immediately control the indicator light 20 at the corresponding position to change the color of the light. The corresponding light color indicates that the rotor has been cleaned completely (e.g., yellow). When the rotor rotates to the discharge port 5... Under the influence of gravity and as the traveling wheel 172 moves along the traveling track 171, the lower sleeve 11 will move downwards, thus separating the lower sleeve 11 from the upper sleeve 10. At this time, the robot or worker at the discharge port 5 can remove the cleaned rotor and transfer it to the subsequent drying process. Secondly, when the light color emitted by the indicator light 20 indicates whether the rotor has been cleaned or not installed, the controller 3 will control the electric control valve 24 in the flushing pipe 9 at the corresponding position to close and control the electric control valve 24 in the return pipe 21 to open. At this time, the cleaning liquid will no longer be discharged from the flushing pipe 9, and the excess cleaning liquid will enter the return hollow plate 22 through the corresponding return pipe 21 and finally be discharged back to the cleaning liquid container through the manifold 23 for reuse, reducing the waste of cleaning liquid. For rotors that have not been cleaned, the color of the indicator light 20 will not change when passing the discharge port 5, and the cleaning will continue after leaving the discharge port 5 to ensure the thoroughness of the rotor cleaning.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A motor rotor cleaning device, comprising a tank body (1) and a drainage pipe (2) fixedly plugged in the side wall of the tank body (1), one side of the tank body (1) is provided with a controller (3), the side wall of the tank body (1) is provided with a feeding port (4) and a discharging port (5), characterized in that, Also include: Rotary hollow plate (6) is arranged above the tank body (1), and the tank body (1) is provided with a driving unit (7) for driving the rotary hollow plate (6) to rotate, and the top of the rotary hollow plate (6) is rotatably connected with a liquid inlet pipe (8); A plurality of flushing pipes (9) are annularly and uniformly distributed on the bottom of the rotary hollow plate (6) and are in communication with the rotary hollow plate (6), the lower side of the flushing pipe (9) is provided with an upper pipe sleeve (10) and a lower pipe sleeve (11), a connecting frame (12) is fixedly connected between the pipe wall of the flushing pipe (9) and the upper pipe sleeve (10), a rotor self-rotating mechanism (13) is installed in the inside of the upper pipe sleeve (10) and the lower pipe sleeve (11), a bottom cover (14) is fixedly connected to the bottom of the lower pipe sleeve (11), a drain hole (15) is formed in the bottom cover (14), and a pressure valve (16) is installed in the inside of the drain hole (15); A walking support unit (17) is installed in the inside of the tank body (1) for opening and closing the upper pipe sleeve (10) and the lower pipe sleeve (11); A plurality of drain detection units (18) are installed on the inner side wall of the bottom of the tank body (1) for detecting the flushing liquid; The walking support unit (17) comprises a walking track (171) fixedly connected to the inner side wall of the tank body (1), a walking wheel (172) rotatably connected to the side wall of the bottom cover (14) and rolling on the walking track (171), and a limiting guide assembly (19) jointly installed on the upper pipe sleeve (10) and the lower pipe sleeve (11), when the walking wheel (172) passes through the positions of the upper inlet (4) and the lower inlet (5), the walking wheel (172) moves along the edge of the inlet of the upper inlet (4) and the lower inlet (5) under the action of the walking track (171); The drain detection unit (18) comprises a support rod (181) fixedly connected to the inner side wall of the bottom of the tank body (1), a liquid receiving cylinder (182) fixedly connected to the top of the support rod (181), a drain square pipe (183) fixedly and communicatively connected to the side wall of the liquid receiving cylinder (182), an installation square pipe (184) fixedly connected to the liquid outlet end of the drain square pipe (183), and a turbidity detector (185) fixedly installed in the inside of the installation square pipe (184) and electrically connected with the controller (3); A plurality of return pipes (21) are fixedly and pluggably connected to the bottom of the rotary hollow plate (6), the return pipes (21) correspond to the flushing pipes (9) one by one, a return hollow plate (22) is arranged below the rotary hollow plate (6) and rotatably connected with the driving end of the motor driving assembly (72), a flow collecting pipe (23) is fixedly and communicatively connected to the side wall of the return hollow plate (22), and electric control valves (24) are installed in the inside of the return pipes (21) and the flushing pipes (9) and electrically connected with the controller (3).

2. A motor rotor cleaning apparatus as claimed in claim 1, wherein The driving unit (7) comprises a U-shaped frame (71) fixed to the inner side wall of the bottom of the tank body (1), a motor driving assembly (72) electrically connected with the controller (3) is installed on the top of the U-shaped frame (71), and the driving end of the motor driving assembly (72) drives the rotation of the rotating hollow plate (6).

3. A motor rotor cleaning apparatus as claimed in claim 1, wherein The rotor self-rotation mechanism (13) comprises a gear sleeve (131) rotationally arranged in the upper sleeve (10), a pressing plate (132) is fixed in the gear sleeve (131), a supporting plate (133) is rotationally connected in the lower sleeve (11), the supporting plate (133) and the pressing plate (132) are both provided with liquid leakage holes (134), a pressing groove (135) matched with the rotor shaft is formed in the bottom of the pressing plate (132), the supporting plate (133) is provided with an insertion hole (136) matched with the rotor shaft, a gear ring (137) corresponding to the position of the gear sleeve (131) is fixed to the inner side wall of the tank body (1), and the gear ring (137) is engaged with the gear sleeve (131).

4. A motor rotor cleaning apparatus as claimed in claim 1, wherein The limiting guide assembly (19) comprises an upper connecting block (191) fixed to the outer side wall of the upper sleeve (10), a limiting sliding rod (192) is fixed to the bottom of the upper connecting block (191), a lower connecting block (193) is fixed to the outer side wall of the lower sleeve (11), and the limiting sliding rod (192) slidably penetrates through the lower connecting block (193), and a limiting block (194) is fixed to the bottom of the limiting sliding rod (192).

5. A motor rotor cleaning apparatus as claimed in claim 1, wherein A plurality of indicator lamps (20) are inserted into the side wall of the rotating hollow plate (6) in a one-to-one correspondence with the flushing pipes (9), and the controller (3) controls the working of the corresponding indicator lamp (20) according to the electric signal fed back by the turbidity detector (185).

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