High heat dissipating motor for petrochemical industry

Abstract

The application relates to a high-heat-dissipation motor for petroleum chemical industry, which pre-performs two-stage filtration on airflow entering into a rear air cover through first and second filter discs, reduces the probability of contact between dust and various components in the motor, simultaneously, through a rotating disc in sliding connection with the blades and a first electric push rod in linkage with the rotating disc, the adhered dust blocks on the blades are scraped and cleaned through transverse sliding of the rotating disc, the dust adhesion amount of the blades is reduced, the motor load is reduced, and then the energy consumption is reduced; in addition, by changing the axial length of the blades between the rotating disc and the air inlet disc, the effective contact surface of the blades and the airflow is changed, the air inlet amount is changed to adapt to different heat dissipation requirements, the energy consumption and the heat dissipation performance are balanced; in addition, through a scraping strip fixed on the rotating disc and an annular cylinder arranged on the rear air cover, dust is automatically cleaned and collected, and manual disassembly and cleaning are replaced.

Description

Technical Field

[0001] This invention relates to an electric motor, and more particularly to a high heat dissipation electric motor for use in the petrochemical industry. Background Technology

[0002] In petrochemical production settings, motor cooling systems face unique environmental challenges. Conventional motors typically employ an internal fan impeller to create an air-cooled system, achieving internal heat exchange through continuous external airflow. However, the prevalent corrosive dust problem in this industry poses a significant threat to this traditional cooling method: when corrosive particles suspended in the working environment penetrate the motor, they first directly erode the metal surfaces of core components such as the stator windings and rotor core, accelerating the aging of insulation materials. Simultaneously, the accumulation of dust on the rotating fan impeller surface not only disrupts the impeller's dynamic balance, causing mechanical vibration, but also forms an additional mass layer, leading to an increase in motor load. This dual impact ultimately manifests as a vicious cycle of decreased cooling efficiency and increased operating energy consumption, which can, in severe cases, directly cause motor shutdown.

[0003] A patent with publication number CN102594023B discloses a self-cooling motor, including a housing, a stator, a rotor, and a motor shaft. The housing has an end cover, and a fan blade that draws air out of the housing is fitted on the outside of the end cover. The fan blade rotates with the motor shaft. Heat dissipation holes are also provided on the end cover to facilitate airflow out of the housing. This patent, by adding a fan blade that draws air out of the housing, actively draws air out of the motor, which can more quickly remove the heat from the motor itself to reduce the motor temperature, allowing it to be used in higher temperature environments. This further expands the application space of the motor product and also helps maintain the best working performance and longer service life of the motor product.

[0004] The aforementioned prior art discloses the use of an exhaust fan to allow airflow out of the motor, thereby improving heat dissipation. However, it does not solve the problem that dust in the petrochemical environment can easily enter the motor and adhere to the fan impeller. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that dust in the petrochemical environment can easily enter the motor and adhere to the fan impeller.

[0006] To address the aforementioned problems, this invention provides a high heat dissipation motor for petrochemical applications, comprising a casing and a front cover fixedly connected to the front end of the casing. A stator is fixedly connected inside the casing, and a rotor rotatably connected to the casing is disposed inside the stator. The rotor includes a rotor core disposed inside the stator and a front shaft and a rear shaft fixedly connected to both sides of the rotor core. A rear shroud is fixedly connected to the rear end of the casing. A first filter plate is fixedly connected to the side wall of the rear shroud away from the casing. A centrifugal impeller is disposed inside the rear shroud. The centrifugal impeller includes an air inlet plate disposed opposite to the first filter plate. Multiple blades circumferentially and equidistantly distributed are fixedly connected to the side of the air inlet plate away from the first filter plate. An exhaust plate is fixedly connected to the end of the blades away from the air inlet plate. A rotating disk slidably connected to the blades is disposed between the air inlet plate and the exhaust plate. A second filter plate fixedly connected to the inner wall of the rear shroud is rotatably connected to the outer side of the rotating disk. The center of the side wall of the rotating disk facing the exhaust plate is fixedly connected to the rear shaft.

[0007] A first telescopic cylinder is rotatably connected to the exhaust fan facing the shell side. The first telescopic cylinder includes a first sliding cylinder rotatably connected to the exhaust fan. A first fixed cylinder is slidably connected to the inner side of the first sliding cylinder and fixedly connected to the inner wall of the rear hood. A fixed end of a first electric push rod is fixedly fixed to the side wall of the first fixed cylinder. The movable end of the first electric push rod is fixedly connected to the side wall of the first sliding cylinder. A second telescopic cylinder is rotatably connected to the air inlet fan facing the first filter disc. The second telescopic cylinder includes a second sliding cylinder rotatably connected to the air inlet fan. A second fixed cylinder is slidably connected to the inner wall of the rear hood on the side of the second sliding cylinder away from the air inlet fan. The second fixed cylinder communicates with the filter holes of the first filter disc.

[0008] An air inlet hole is provided at the center of the air inlet plate, and an exhaust hole is provided on the exhaust plate that communicates with the inner cavity of the first sliding cylinder. The exhaust plate is slidably connected to the rear rotating shaft, and the rotating plate has a sliding hole for the blades to slide. Multiple first heat dissipation channels are provided inside the shell wall. One end of the first heat dissipation channel is located on the side wall of the shell away from the front cover and communicates with the inner cavity of the rear air cover. The other end is located on the circumferential side wall of the shell and communicates with the outside atmosphere.

[0009] In the aforementioned high heat dissipation motor for petrochemical applications, the amount of dust entering the motor and the dust adhering to the fan impeller are reduced through a two-stage filter disc and a rotating disc slidably connected to the impeller.

[0010] As a further improvement of this application, a temperature sensor facing the stator is fixedly connected to the inner wall of the shell, and the first electric push rod and the temperature sensor are both electrically connected to the same motor controller.

[0011] As a further improvement of this application, a dust discharge groove is provided on the side wall of the rear hood. The dust discharge groove is located on the air inlet side of the second filter plate. A scraper is fixedly connected to the rotating disk and slides against the second filter plate. The scraper is arranged opposite to the dust discharge groove. The outer walls of both the first sliding cylinder and the second sliding cylinder slide against the inner wall of the rear hood.

[0012] As a further improvement of this application, an annular cover communicating with the dust exhaust trough is fixedly connected to the outer wall of the rear hood. An annular cylinder is threadedly connected to the annular cover. The annular cylinder slides against the outer wall of the rear hood. The outer wall of the annular cylinder is provided with multiple exhaust holes. A gate is slidably connected inside the dust exhaust trough. The gate is fixedly connected to the movable end of the second electric push rod. The fixed end of the second electric push rod is fixedly connected to the shell.

[0013] As a further improvement of this application, arc-shaped protrusions are fixedly connected to the circumferential sidewalls of both the air inlet plate and the air outlet plate, and arc-shaped grooves are opened on the inner walls of both the first sliding cylinder and the second sliding cylinder. The arc-shaped protrusions are nested in the arc-shaped grooves and slide against their inner walls.

[0014] As a further improvement of this application, multiple first heat dissipation channels form multiple groups of channels that are equidistantly distributed in an arc shape, and the multiple first heat dissipation channels in each group are distributed in a point-like manner along a spiral line on the outer wall of the shell.

[0015] As a further improvement of this application, the rear rotating shaft is rotatably connected to the rear end side wall of the shell through the first bearing, and the front rotating shaft is rotatably connected to the front cover through the third bearing. The shell is fixedly connected to the inner disk between the front cover and the stator, and the front rotating shaft is rotatably connected to the inner disk through the second bearing. The first bearing, the second bearing, and the third bearing are of the same specifications. A guide plate is fixedly connected between the front cover and the inner disk, and an annular gap for airflow is formed between the guide plate and the front rotating shaft. The outer diameter of the annular gap is smaller than the outer diameter of the second bearing.

[0016] The first fixed cylinder has a conical cavity. The opening of the conical cavity facing the shell is opposite to the first bearing. The shell wall has multiple second heat dissipation channels. The multiple second heat dissipation channels are evenly distributed with the multiple first heat dissipation channels at intervals. The opening of the second heat dissipation channel away from the rear fan cover is connected to the cavity enclosed by the inner plate and the guide plate. The shell wall has an air outlet. The cavity formed by the guide plate and the front cover is connected to the air outlet.

[0017] As a further improvement of this application, the orifices of the multiple first heat dissipation channels and the second heat dissipation channels are circumferentially and equidistantly distributed on the rear end face of the shell. A rotating plug is slidably abutted against the rear end face of the shell and is disposed opposite to the orifice. The rotating plug is fixedly connected to the rear rotating shaft through a fixing bracket.

[0018] In summary, this invention pre-filters the airflow entering the rear shroud using a first filter disc installed on the side wall of the rear shroud and a second filter disc installed inside the rear shroud. This reduces the probability of dust contacting the components inside the motor, extending the motor's service life. Simultaneously, a rotating disc slidably connected to the blades and a first electric push rod linked to the rotating disc scrape away adhering dust particles from the blades by utilizing the lateral sliding of the rotating disc relative to the blades, reducing the amount of dust adhering to the blades, lowering the motor load, and reducing energy consumption. Furthermore, by changing the axial length of the blades located between the rotating disc and the air inlet disc, the effective contact surface between the blades and the airflow is altered, thereby changing the airflow volume to adapt to different heat dissipation requirements and balance energy consumption and heat dissipation performance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present application;

[0020] Figure 2 This is a schematic diagram of the transverse cross-sectional structure of this application;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0022] Figure 4 This is a schematic diagram of the exploded assembly structure of the rear shroud in this application;

[0023] Figure 5 This is a schematic diagram of the assembly structure of the centrifugal impeller and the rear shaft in this application;

[0024] Figure 6 This is a schematic diagram of the assembly structure of the first telescopic cylinder and the centrifugal impeller in this application;

[0025] Figure 7 This is a three-dimensional sectional view of the shell structure in this application;

[0026] Figure 8 This is a schematic diagram of the airflow state in the motor;

[0027] Figure 9 This is a three-dimensional sectional view of the rear shroud in this application;

[0028] Figure 10 for Figure 9 Enlarged structural diagram at point B;

[0029] Figure 11 This is a three-dimensional structural diagram of the gate and the second electric push rod in this application.

[0030] Explanation of the labels in the diagram:

[0031] 1. Shell; 101. First heat dissipation channel; 102. Second heat dissipation channel; 103. Air outlet; 2. Stator; 3. Rotor; 4. Front shaft; 5. Front cover; 6. Rear shroud; 601. Dust discharge trough; 7. First filter disc; 8. Centrifugal impeller; 9. Rear shaft; 10. Air inlet disc; 1001. Air inlet hole; 11. Blade; 12. Exhaust disc; 1201. Exhaust hole; 1202. Arc-shaped protrusion; 13. Rotating disc; 1301. Sliding hole; 14. First telescopic cylinder; 15. First sliding... 1501. Arc-shaped groove; 16. First fixed cylinder; 17. Second filter disc; 18. First electric push rod; 19. Second telescopic cylinder; 20. Second sliding cylinder; 21. Second fixed cylinder; 22. First bearing; 23. Inner disc; 24. Second bearing; 25. Third bearing; 26. Guide disc; 27. Temperature sensor; 28. Annular cover; 29. ​​Annular cylinder; 2901. Exhaust port; 30. Gate plate; 31. Second electric push rod; 32. Scraper; 33. Rotating plug; 34. Fixing frame. Detailed Implementation

[0032] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] Implementation method 1:

[0034] Figure 1-8 A high heat dissipation motor for petrochemical industry is shown, including a shell 1 and a front cover 5 fixedly connected to the front end of the shell 1. A stator 2 is fixedly connected inside the shell 1. A rotor 3 is rotatably connected to the shell 1 inside the stator 2. The rotor 3 includes a rotor core disposed inside the stator 2 and a front shaft 4 and a rear shaft 9 disposed on both sides of the rotor core and fixedly connected thereto.

[0035] Please see Figure 3 and Figure 5 A rear air hood 6 is fixedly connected to the rear end of the shell 1. A first filter disc 7 is fixedly connected to the side wall of the rear air hood 6 away from the shell 1. A centrifugal impeller 8 is provided inside the rear air hood 6. The centrifugal impeller 8 includes an air inlet disc 10 arranged opposite to the first filter disc 7. A plurality of blades 11 are fixedly connected to the side of the air inlet disc 10 away from the first filter disc 7. An exhaust disc 12 is fixedly connected to the end of the blades 11 away from the air inlet disc 10. A rotating disc 13 is provided between the air inlet disc 10 and the exhaust disc 12 and is slidably connected to the blades 11. A second filter disc 17 is rotatably connected to the outer side of the rotating disc 13 and is fixedly connected to the inner wall of the rear air hood 6. The center position of the side wall of the rotating disc 13 facing the exhaust disc 12 is fixedly connected to the rear rotating shaft 9. The rear rotating shaft 9 drives the rotating disc 13 to rotate. The rotating disc 13 drives the blades 11 to rotate. The blades 11 drive the air inlet disc 10 and the exhaust disc 12 to rotate.

[0036] Please see Figure 3 and Figure 6The exhaust fan 12 is rotatably connected to the first telescopic cylinder 14 facing the shell cylinder 1. The first telescopic cylinder 14 includes a first sliding cylinder 15 rotatably connected to the exhaust fan 12. The inner side of the first sliding cylinder 15 is slidably connected to a first fixed cylinder 16 fixedly connected to the inner wall of the rear air cover 6. The fixed end of the first electric push rod 18 is fixed on the side wall of the first fixed cylinder 16. The movable end of the first electric push rod 18 is fixedly connected to the side wall of the first sliding cylinder 15. The first electric push rod 18 drives the first sliding cylinder 15 to move laterally. The first sliding cylinder 15 drives the exhaust fan 12 to move laterally. The exhaust fan 12 drives the blades 11 and the air inlet fan 10 to move laterally, changing the axial length of the blades 11 between the air inlet fan 10 and the rotating disk 13.

[0037] Please see Figure 3 and Figure 4 The air inlet disc 10 is rotatably connected to the first filter disc 7 and a second telescopic cylinder 19 is connected to it. The second telescopic cylinder 19 includes a second sliding cylinder 20 rotatably connected to the air inlet disc 10. The second sliding cylinder 20 is slidably connected to the second fixed cylinder 21 fixedly connected to the inner wall of the rear air cover 6 on the side away from the air inlet disc 10. The second fixed cylinder 21 communicates with the filter holes of the first filter disc 7.

[0038] Please see Figure 2 and Figure 3 An air inlet hole 1001 is provided at the center of the air inlet plate 10, and an exhaust hole 1201 is provided on the exhaust plate 12, which communicates with the inner cavity of the first sliding cylinder 15. The exhaust plate 12 is slidably connected to the rear rotating shaft 9. The rotating plate 13 is provided with a sliding hole 1301 for the blades 11 to slide. Multiple first heat dissipation channels 101 are provided inside the shell wall of the shell cylinder 1. One end of the first heat dissipation channel 101 is opened on the side wall of the shell cylinder 1 away from the front cover 5 and communicates with the inner cavity of the rear air cover 6. The other end is opened on the circumferential side wall of the shell cylinder 1 and communicates with the outside atmosphere.

[0039] For specific usage instructions, please refer to [link / reference]. Figure 6 and Figure 8 The rear rotating shaft 9 drives the rotating disk 13 to rotate, and the rotating disk 13 drives the blades 11, the air inlet disk 10 and the air outlet disk 12 to rotate. The part of the blades 11 located between the rotating disk 13 and the air inlet disk 10 is defined as the effective blade part. The centrifugal negative pressure generated by the rotation of the effective blade part causes the airflow to enter the second telescopic cylinder 19 through the filter holes of the first filter disk 7, and then enter the centrifugal cavity between the rotating disk 13 and the air inlet disk 10 through the air inlet hole 1001. Then, it enters the first telescopic cylinder 14 through the second filter disk 17 and the air outlet hole 1201, and finally blows towards the first heat dissipation channel 101 and is discharged into the atmosphere.

[0040] When it is necessary to change the air intake volume, the first electric push rod 18 is activated. The first electric push rod 18 drives the first sliding cylinder 15 to move laterally. The first sliding cylinder 15 drives the exhaust plate 12 and the blades 11 to move laterally, thereby changing the axial length of the effective blade portion of the blades 11 located between the air intake plate 10 and the rotating plate 13 (changing the contact area between the blades 11 and the airflow), thereby changing the air intake volume. At the same time, as the blades 11 slide laterally along the rotating plate 13, the rotating plate 13 scrapes and cleans the dust particles adhering to the blades 11, reducing the probability of dust adhering to the blades 11.

[0041] Compared to traditional cooling motors, this invention employs a two-stage filtration system: a first filter disc 7 mounted on the side wall of the rear shroud 6 and a second filter disc 17 installed inside the rear shroud 6. This, combined with a shell 1 featuring a first heat dissipation channel 101, reduces the probability of dust contacting internal motor components, extending the motor's lifespan. Simultaneously, a rotating disk 13 slidably connected to the blades 11 and a first electric push rod 18 linked to the rotating disk 13 scrape away adhering dust particles from the blades 11, reducing dust accumulation, motor load, and energy consumption. Furthermore, by altering the axial length of the blades 11 between the rotating disk 13 and the air inlet disk 10, the effective contact area between the blades 11 and the airflow is changed, thereby altering the airflow volume to adapt to different heat dissipation requirements and balance energy consumption and heat dissipation performance.

[0042] Please see Figure 2 and Figure 3 A temperature sensor 27 facing the stator 2 is fixedly connected to the inner wall of the shell 1. The first electric push rod 18 and the temperature sensor 27 are both electrically connected to the same motor controller.

[0043] Specifically, the temperature sensor 27 measures the temperature of the stator 2 of the motor in real time. When the temperature reaches the set threshold, the first electric push rod 18 is activated. The first electric push rod 18 drives the air inlet plate 10 to move away from the rotating plate 13 through the first sliding cylinder 15, increasing the axial length of the blade 11 between the rotating plate 13 and the air inlet plate 10, increasing the air intake, thereby improving the heat dissipation effect, realizing automatic control of air intake, and improving energy consumption level and heat dissipation quality.

[0044] Please see Figure 3 and Figure 5 Both the air inlet plate 10 and the air outlet plate 12 have arc-shaped protrusions 1202 fixedly connected to their circumferential side walls. The inner walls of the first sliding cylinder 15 and the second sliding cylinder 20 are provided with arc-shaped grooves 1501. The arc-shaped protrusions 1202 are nested in the arc-shaped grooves 1501 and slide against their inner walls.

[0045] Specifically, by providing an arc-shaped protrusion 1202 and an arc-shaped groove 1501, the exhaust fan 12 is rotatably connected to the first sliding cylinder 15, and when the first sliding cylinder 15 moves laterally, it drives the exhaust fan 12 to move laterally. Similarly, the air inlet fan 10 is rotatably connected to the second sliding cylinder 20, and when the second sliding cylinder 20 moves laterally, it drives the second sliding cylinder 20 to move laterally.

[0046] Please see Figure 1 and Figure 2 Multiple first heat dissipation channels 101 form multiple groups of channels that are equidistantly distributed in an arc shape. The multiple first heat dissipation channels 101 in each group are connected to the external atmosphere in a point-like manner along a spiral line on the outer wall of the shell 1.

[0047] Specifically, through multiple sets of first heat dissipation channels 101, the airflow is made to fully contact the shell wall of the shell cylinder 1 and exhaust in the radial direction, which improves the heat dissipation efficiency compared with the traditional exhaust channel that flows through the entire axial direction of the shell cylinder 1.

[0048] Please see Figure 2 and Figure 3 The rear rotating shaft 9 is rotatably connected to the rear end side wall of the shell 1 via the first bearing 22, and the front rotating shaft 4 is rotatably connected to the front cover 5 via the third bearing 25. The shell 1 is fixedly connected to the inner disk 23 between the front cover 5 and the stator 2. The front rotating shaft 4 is rotatably connected to the inner disk 23 via the second bearing 24. The first bearing 22, the second bearing 24 and the third bearing 25 are of the same specifications. A guide disk 26 is fixedly connected between the front cover 5 and the inner disk 23. An annular gap for airflow is formed between the guide disk 26 and the front rotating shaft 4. The outer diameter of the annular gap is smaller than the outer diameter of the second bearing 24.

[0049] A conical cavity is provided inside the first fixed cylinder 16. The opening of the conical cavity facing the shell cylinder 1 is opposite to the first bearing 22. Multiple second heat dissipation channels 102 are provided inside the shell wall of the shell cylinder 1. The multiple second heat dissipation channels 102 are evenly distributed with the multiple first heat dissipation channels 101 at intervals. The opening of the second heat dissipation channel 102 away from the rear fan cover 6 is connected to the cavity enclosed by the inner plate 23 and the guide plate 26. An air outlet 103 is provided on the shell wall of the shell cylinder 1. The cavity formed by the guide plate 26 and the front cover 5 is connected to the air outlet 103.

[0050] Specifically, through the first fixed cylinder 16 with an arc-shaped cavity, and the inner plate 23 and guide plate 26 fixed inside the shell cylinder 1, in conjunction with the second heat dissipation channel 102 and the air outlet 103, the filtered airflow flows sequentially through the first bearing 22, the second bearing 24 and the third bearing 25, so as to fully cool the heat-generating bearing.

[0051] Please see Figure 3 and Figure 4The openings of multiple first heat dissipation channels 101 and second heat dissipation channels 102 are circumferentially distributed on the rear end face of the shell 1. A rotating plug 33 is slidably abutted against the rear end face of the shell 1 and is disposed opposite to the opening. The rotating plug 33 is fixedly connected to the rear rotating shaft 9 through the fixing frame 34. The rear rotating shaft 9 drives the rotating plug 33 to rotate circumferentially through the fixing frame 34.

[0052] Specifically, the rotating plug 33 rotates outside the circumferentially distributed connecting holes, causing airflow to intermittently enter the first heat dissipation channel 101 and the second heat dissipation channel 102, generating pulsed airflow, increasing the flow velocity of airflow in the first heat dissipation channel 101 and the second heat dissipation channel 102, and improving the heat dissipation effect.

[0053] The second implementation method:

[0054] Figure 9-11 This invention discloses a high heat dissipation motor for petrochemical applications. Based on the first embodiment, a dust discharge groove 601 is provided on the side wall of the rear shroud 6. The dust discharge groove 601 is located on the air inlet side of the second filter disc 17. A scraper 32 is fixedly connected to the rotating disc 13 and slides against the second filter disc 17. The scraper 32 is arranged opposite to the dust discharge groove 601.

[0055] Specifically, when the rotating disk 13 rotates, it drives the scraper 32 to rotate. The scraper 32 scrapes and cleans the second filter disk 17 and pushes the scraped and accumulated dust into the dust discharge trough 601. There is no need to disassemble the rear air cover 6 and then clean the second filter disk 17.

[0056] Please see Figure 3 The outer walls of both the first sliding cylinder 15 and the second sliding cylinder 20 slide against the inner wall of the rear hood 6.

[0057] Specifically, the first electric push rod 18 causes the first sliding cylinder 15 to abut against the second filter disc 17, thereby blocking the second filter disc 17. The airflow blows the dust accumulated on the second filter disc 17 toward the dust discharge trough 601, improving the dust discharge effect.

[0058] Please see Figure 9 and Figure 10 The outer wall of the rear hood 6 is fixedly connected to an annular cover 28 that communicates with the dust discharge trough 601. The annular cover 28 is threadedly connected to an annular cylinder 29. The annular cylinder 29 slides against the outer wall of the rear hood 6. The outer wall of the annular cylinder 29 is provided with multiple exhaust holes 2901.

[0059] Specifically, the airflow enters the annular hood 28 through the dust discharge trough 601, and then enters the annular cylinder 29. The dust is trapped in the annular cylinder 29, and the gas is discharged from the exhaust port 2901.

[0060] Please see Figure 11A gate 30 is slidably connected inside the dust discharge trough 601. The gate 30 is fixedly connected to the movable end of the second electric push rod 31, and the fixed end of the second electric push rod 31 is fixedly connected to the shell 1.

[0061] Specifically, when the first sliding cylinder 15 abuts against the second filter disc 17, the second electric push rod 31 is activated, the dust discharge groove 601 is opened, and the airflow carries the dust through the annular cover 28 into the annular cylinder 29, realizing the centralized collection of dust and facilitating cleaning; it should be noted that the shell wall of the shell cylinder 1 is provided with a receiving cavity for accommodating the gate plate 30 and the second electric push rod 31.

[0062] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A high heat dissipation motor for petrochemical applications, characterized in that, The system includes a shell (1) and a front cover (5) fixedly connected to the front end of the shell (1). A stator (2) is fixedly connected inside the shell (1). A rotor (3) is provided inside the stator (2) and rotatably connected to the shell (1). The rotor (3) includes a rotor core disposed inside the stator (2) and a front rotating shaft (4) and a rear rotating shaft (9) disposed on both sides of the rotor core and fixedly connected thereto. A rear air shroud (6) is fixedly connected to the rear end of the shell (1). A first filter disc (7) is fixedly connected to the side wall of the rear air shroud (6) away from the shell (1). A centrifugal impeller (8) is provided inside the rear air shroud (6). The centrifugal impeller (8) includes... An air inlet disc (10) is arranged opposite to the first filter disc (7). Multiple blades (11) are fixedly connected to the side of the air inlet disc (10) away from the first filter disc (7). An exhaust disc (12) is fixedly connected to the end of the blades (11) away from the air inlet disc (10). A rotating disc (13) is provided between the air inlet disc (10) and the exhaust disc (12) and is slidably connected to the blades (11). A second filter disc (17) is rotatably connected to the outer side of the rotating disc (13) and is fixedly connected to the inner wall of the rear hood (6). The center of the side wall of the rotating disc (13) facing the exhaust disc (12) is fixedly connected to the rear rotating shaft (9). The exhaust fan (12) is rotatably connected to a first telescopic cylinder (14) on the side facing the shell (1). The first telescopic cylinder (14) includes a first sliding cylinder (15) rotatably connected to the exhaust fan (12). The inner side of the first sliding cylinder (15) is slidably connected to a first fixed cylinder (16) fixedly connected to the inner wall of the rear hood (6). The fixed end of the first electric push rod (18) is fixed on the side wall of the first fixed cylinder (16). The movable end of the first electric push rod (18) is fixedly connected to the side wall of the first sliding cylinder (15). The air inlet fan (10) is rotatably connected to a second telescopic cylinder (19) on the side facing the first filter fan (7). The second telescopic cylinder (19) includes a second sliding cylinder (20) rotatably connected to the air inlet fan (10). The side of the second sliding cylinder (20) away from the air inlet fan (10) is slidably connected to a second fixed cylinder (21) fixedly connected to the inner wall of the rear hood (6). The second fixed cylinder (21) communicates with the filter holes of the first filter fan (7). An air inlet hole (1001) is provided at the center of the air inlet plate (10), and an exhaust hole (1201) is provided on the exhaust plate (12) to communicate with the inner cavity of the first sliding cylinder (15). The exhaust plate (12) is slidably connected to the rear rotating shaft (9), and the rotating plate (13) is provided with a sliding hole (1301) for the blades (11) to slide. Multiple first heat dissipation channels (101) are provided inside the shell wall of the shell cylinder (1). One end of the first heat dissipation channel (101) is opened on the side wall of the shell cylinder (1) away from the front cover (5) and communicates with the inner cavity of the rear shroud (6). The other end is opened on the circumferential side wall of the shell cylinder (1) and communicates with the external atmosphere.

2. The high heat dissipation motor for petrochemical industry according to claim 1, characterized in that, A temperature sensor (27) facing the stator (2) is fixedly connected to the inner wall of the shell (1). The first electric push rod (18) and the temperature sensor (27) are both electrically connected to the same motor controller.

3. A high heat dissipation motor for petrochemical applications according to claim 2, characterized in that, The rear hood (6) has a dust discharge groove (601) on its side wall. The dust discharge groove (601) is located on the air inlet side of the second filter disc (17). A scraper (32) that slides against the second filter disc (17) is fixedly connected to the rotating disc (13). The scraper (32) is arranged opposite to the dust discharge groove (601). The outer walls of the first sliding cylinder (15) and the second sliding cylinder (20) slide against the inner wall of the rear hood (6).

4. A high heat dissipation motor for petrochemical industry according to claim 3, characterized in that, The outer wall of the rear hood (6) is fixedly connected to an annular cover (28) communicating with the dust discharge groove (601). The annular cover (28) is threadedly connected to an annular cylinder (29). The annular cylinder (29) slides against the outer wall of the rear hood (6). The outer wall of the annular cylinder (29) is provided with multiple exhaust holes (2901). A gate plate (30) is slidably connected inside the dust discharge groove (601). The gate plate (30) is fixedly connected to the movable end of the second electric push rod (31). The fixed end of the second electric push rod (31) is fixedly connected to the shell cylinder (1).

5. A high heat dissipation motor for petrochemical applications according to claim 1, characterized in that, Both the air inlet plate (10) and the air outlet plate (12) have arc-shaped protrusions (1202) fixedly connected to their circumferential sidewalls. The inner walls of the first sliding cylinder (15) and the second sliding cylinder (20) are provided with arc-shaped grooves (1501). The arc-shaped protrusions (1202) are nested in the arc-shaped grooves (1501) and slide against their inner walls.

6. A high heat dissipation motor for petrochemical applications according to claim 1, characterized in that, Multiple first heat dissipation channels (101) form multiple groups of channels that are equidistantly distributed in an arc shape. The multiple first heat dissipation channels (101) in each group are connected to the external atmosphere in a point-like manner along a spiral line on the outer wall of the shell (1).

7. A high heat dissipation motor for petrochemical applications according to claim 1, characterized in that, The rear rotating shaft (9) is rotatably connected to the rear end side wall of the shell (1) through the first bearing (22), and the front rotating shaft (4) is rotatably connected to the front cover (5) through the third bearing (25). The shell (1) is fixedly connected to the inner disk (23) between the front cover (5) and the stator (2). The front rotating shaft (4) is rotatably connected to the inner disk (23) through the second bearing (24). The first bearing (22), the second bearing (24) and the third bearing (25) are of the same specifications. A guide plate (26) is fixedly connected between the front cover (5) and the inner disk (23). An annular gap for airflow is formed between the guide plate (26) and the front rotating shaft (4). The outer diameter of the annular gap is smaller than the outer diameter of the second bearing (24). The first fixed cylinder (16) has a conical cavity. The opening of the conical cavity facing the shell cylinder (1) is opposite to the first bearing (22). Multiple second heat dissipation channels (102) are opened in the shell wall of the shell cylinder (1). The multiple second heat dissipation channels (102) and multiple first heat dissipation channels (101) are evenly distributed at intervals. The opening of the second heat dissipation channel (102) away from the rear fan cover (6) is connected to the cavity enclosed by the inner plate (23) and the guide plate (26). An air outlet (103) is opened on the shell wall of the shell cylinder (1). The cavity formed by the guide plate (26) and the front cover (5) is connected to the air outlet (103).

8. A high heat dissipation motor for petrochemical applications according to claim 7, characterized in that, The openings of the first heat dissipation channel (101) and the second heat dissipation channel (102) are circumferentially distributed on the rear end face of the shell (1). A rotating plug (33) is slidably abutted against the rear end face of the shell (1) and is disposed opposite to the opening. The rotating plug (33) is fixedly connected to the rear rotating shaft (9) through a fixing bracket (34).

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