High-heat-dissipation motor for petrochemical industry

Abstract

The invention relates to a high-heat-dissipation motor for petrochemical engineering in the field of motors, two-stage filtering is performed on airflow entering a rear fan cover in advance through a first filtering disc and a second filtering disc, the probability that dust makes contact with all parts in the motor is reduced, and meanwhile, the dust is prevented from entering the rear fan cover. Through the rotating disc in sliding connection with the blades and the first electric push rod in linkage with the rotating disc, dust blocks adhering to the blades are scraped and cleaned through transverse sliding of the rotating disc, the amount of dust adhering to the blades is reduced, the motor load is reduced, and then 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 face of the blades and airflow is changed, the air inlet amount is changed to adapt to different heat dissipation requirements, and energy consumption and heat dissipation performance are balanced. In addition, dust is automatically cleaned and collected through a scraping strip fixed to the rotating disc and an annular cylinder arranged on the rear fan cover, and manual disassembly and cleaning are replaced.

Description

Technical Field

[0001] The present invention relates to a motor, in particular to a motor with high heat dissipation for petrochemical industry, which is applied in the motor field. Background Art

[0002] In petrochemical production scenarios, motor cooling systems face unique environmental challenges. Conventional motors typically utilize an air-cooled cooling system with a built-in fan impeller, achieving internal heat exchange by continuously introducing external airflow. However, the industry's prevalent problem of corrosive dust poses a significant threat to this traditional cooling method: when corrosive particles suspended in the operating environment invade the interior of the motor, they first directly corrode the metal surfaces of core components such as the stator windings and rotor core, accelerating the aging of the insulation material. At the same time, dust adheres and accumulates on the surface of the rotating fan impeller, disrupting the impeller's dynamic balance and causing mechanical vibration. It also forms an additional mass layer, increasing the motor's load factor. This dual impact ultimately manifests as a vicious cycle of diminished cooling efficiency and increased operating energy consumption, which can, in severe cases, directly lead to motor shutdown failure.

[0003] The existing patent with publication number CN102594023B discloses a self-heating motor, including a housing, a stator, a rotor and a motor shaft, wherein the housing has an end cover, and the outer side of the end cover is provided with a fan blade that draws air from the inside of the housing to the outside, and the fan blade rotates with the motor shaft; and a heat dissipation hole is opened on the end cover to facilitate air flow out of the housing; this patent actively draws air out from the inside of the motor by adding fan blades that can draw air from the inside of the housing to the outside, which can take away the heat of the motor itself more quickly to reduce the temperature of the motor, so that it can be used in higher temperature environments, further expanding the application space of motor products, and at the same time, it also helps to maintain the better working performance and longer service life of the motor products.

[0004] The above-mentioned prior art discloses the use of an exhaust fan to allow air to flow out of the motor to improve the heat dissipation effect, but does not solve the problem that dust in the petrochemical environment easily enters the motor and adheres 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 a petrochemical environment easily enters the motor and adheres to the fan impeller.

[0006] The yoke is provided with a plurality of air filter elements, the air filter element being fixedly connected to the air filter element and the air filter element being provided with a plurality of air filter elements at the rear end of the air filter element.

[0007] The exhaust disc is rotatably connected to the side of the shell cylinder, the first telescopic cylinder includes a first sliding cylinder rotatably connected to the exhaust disc, the inside of the first sliding cylinder is slidably connected to the first fixed cylinder fixedly connected to the inner wall of the rear air hood, the fixed end of the first electric push rod is fixed to the side wall of the first fixed cylinder, and the movable end of the first electric push rod is fixedly connected to the side wall of the first sliding cylinder; the air inlet disc is rotatably connected to the second telescopic cylinder toward the side of the first filter disc, the second telescopic cylinder includes a second sliding cylinder rotatably connected to the air inlet disc, and the second sliding cylinder is slidably connected to the second fixed cylinder fixedly connected to the inner wall of the rear air hood away from the air inlet disc, and the second fixed cylinder is communicated with the filter holes of the first filter disc;

[0008] An air inlet hole is provided at the center of the air inlet disk, an exhaust hole is provided on the exhaust disk and is connected to the inner cavity of the first sliding cylinder, the exhaust disk is slidably connected to the rear rotating shaft, and the rotating disk is provided with a sliding hole for the blades to slide; a plurality of first heat dissipation channels are provided in the shell wall, one end opening of the first heat dissipation channel is provided on the side wall of the shell away from the front cover and is connected to the inner cavity of the rear air hood, and the other end opening is provided on the circumferential side wall of the shell and is connected to the external atmosphere.

[0009] In the above-mentioned high heat dissipation motor for petrochemical industry, the amount of dust entering the motor and the dust adhering to the fan impeller are reduced by the two-stage filter disc and the rotating disc slidingly connected to the impeller.

[0010] As a further improvement of the present 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 the present application, a dust exhaust groove is provided on the side wall of the rear air hood, which is located on the air inlet side of the second filter disc. A scraper bar is fixedly connected to the rotating disc and slides against the second filter disc. The scraper bar is arranged opposite to the dust exhaust groove; the outer walls of the first sliding cylinder and the second sliding cylinder both slide against the inner wall of the rear air hood.

[0012] As a further improvement of the present application, an annular cover connected to the dust exhaust groove is fixedly connected to the outer wall of the rear air hood, and the annular cover is threadedly connected to an annular cylinder, which slides against the outer wall of the rear air hood, and the outer wall of the annular cylinder is provided with multiple exhaust holes; a gate plate is slidably connected in the dust exhaust groove, and the gate plate is fixedly connected to the movable end of the second electric push rod, and the fixed end of the second electric push rod is fixedly connected to the shell cylinder.

[0013] As a further improvement of the present application, arc-shaped protrusions are fixedly connected to the circumferential side walls of both the air inlet plate and the exhaust plate, and arc-shaped grooves are provided on the inner walls of the first sliding cylinder and the second sliding cylinder. The arc-shaped protrusions are nested in the arc-shaped grooves and slide in contact with the inner walls.

[0014] As a further improvement of the present application, the multiple first heat dissipation channels form multiple groups of channel groups that are equally spaced in an arc shape, and the multiple first heat dissipation channels 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.

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

[0016] A conical cavity is provided in the first fixed cylinder, and an opening of the conical cavity toward the side of the shell cylinder is arranged opposite to the first bearing. A plurality of second heat dissipation channels are provided in the shell wall of the shell cylinder, and the plurality of second heat dissipation channels are evenly spaced and distributed with respect to the plurality of first heat dissipation channels. An opening of the second heat dissipation channel away from the side of the rear air cover is connected to a cavity enclosed by the inner disk and the guide disk. An air outlet is provided on the shell wall of the shell cylinder, and a cavity enclosed by the guide disk and the front cover is connected to the air outlet.

[0017] As a further improvement of the present application, the openings 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 tube, and the rear end face of the shell tube slides against a rotating plug arranged opposite to the opening, and the rotating plug is fixedly connected to the rear rotating shaft through a fixing frame.

[0018] To summarize, the present invention pre-filters the airflow entering the rear air hood in two stages by means of a first filter disc installed on the side wall of the rear air hood and a second filter disc installed inside the rear air hood, thereby reducing the probability of dust contacting various components in the motor and extending the service life of the motor. At the same time, through a rotating disc slidably connected to the blades and a first electric push rod linked to the rotating disc, the lateral sliding of the rotating disc relative to the blades is utilized to scrape and clean the dust blocks adhered to the blades, thereby reducing the amount of dust adhered to the blades, reducing the motor load and energy consumption. In addition, by changing the axial length of the blades between the rotating disc and the air inlet disc, the effective contact surface between the blades and the airflow is changed, thereby changing the air intake volume, adapting to different heat dissipation requirements, and balancing energy consumption and heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of this application;

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

[0021] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 This is a schematic diagram of the explosion assembly structure of the rear wind shield 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 schematic diagram of the three-dimensional cross-sectional structure of the shell in this application;

[0026] Figure 8 Schematic diagram of the flow state of airflow in the motor;

[0027] Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the rear air hood in this application;

[0028] Figure 10 for Figure 9 Schematic diagram of the enlarged structure at B in the middle;

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

[0030] Description of the numbers in the figure:

[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 air hood; 601. Dust discharge slot; 7. First filter disc; 8. Centrifugal impeller; 9. Rear shaft; 10. Air inlet disc; 1001. Air inlet; 11. Blades; 12. Exhaust disc; 1201. Exhaust hole; 1202. Arc-shaped protrusion; 13. Rotating disc; 1301. Sliding hole; 14. First telescopic cylinder; 15. First sliding Cylinder; 1501, arc-shaped groove; 16, first fixed cylinder; 17, second filter plate; 18, first electric push rod; 19, second telescopic cylinder; 20, second sliding cylinder; 21, second fixed cylinder; 22, first bearing; 23, inner plate; 24, second bearing; 25, third bearing; 26, guide plate; 27, temperature sensor; 28, annular cover; 29, annular cylinder; 2901, exhaust hole; 30, gate; 31, second electric push rod; 32, scraper; 33, rotating plug; 34, fixed frame. DETAILED DESCRIPTION

[0032] The following describes two implementation methods of the present application in detail with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-8 A high-heat dissipation motor for use in the petrochemical industry is shown, comprising a housing 1 and a front cover 5 fixedly connected to the front end of the housing 1. A stator 2 is fixedly connected to the housing 1. A rotor 3 rotatably connected to the housing 1 is provided inside the stator 2. The rotor 3 comprises a rotor core disposed inside the stator 2, and a front shaft 4 and a rear shaft 9 disposed on either side of the rotor core and fixedly connected to the rotor core.

[0035] See also Figure 3 and Figure 5 , the rear end of the shell cylinder 1 is fixedly connected to the rear air cover 6, and the side wall of the rear air cover 6 away from the shell cylinder 1 is fixedly connected to the first filter disc 7, and a centrifugal impeller 8 is provided in the rear air cover 6. The centrifugal impeller 8 includes an air inlet disc 10 arranged opposite to the first filter disc 7, and the air inlet disc 10 is fixedly connected to a plurality of blades 11 distributed equidistantly around the circumference on the side away from the first filter disc 7. The end of the blade 11 away from the air inlet disc 10 is fixedly connected to the exhaust disc 12, and a rotating disc 13 slidably connected to the blades 11 is provided between the air inlet disc 10 and the exhaust disc 12. The outer side of the rotating disc 13 is rotatably connected to a second filter disc 17 fixedly connected to the inner wall of the rear air cover 6, and the rotating disc 13 is fixedly connected to the rear rotating shaft 9 towards the center position of the side wall on one side of the exhaust disc 12. The rear rotating shaft 9 drives the rotating disc 13 to rotate, and the rotating disc 13 drives the blades 11 to rotate, and the blades 11 drive the air inlet disc 10 and the exhaust disc 12 to rotate;

[0036] See also Figure 3 and Figure 6The exhaust disc 12 is connected to the first telescopic cylinder 14 by rotation toward the side of the shell 1. The first telescopic cylinder 14 includes a first sliding cylinder 15 rotatably connected to the exhaust disc 12. The inside of the first sliding cylinder 15 is slidably connected to a first fixed cylinder 16 fixedly connected to the inner wall of the rear wind cover 6. The fixed end of the first electric push rod 18 is fixed to 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 disc 12 to move laterally. The exhaust disc 12 drives the blades 11 and the air inlet disc 10 to move laterally, thereby changing the axial length of the blades 11 between the air inlet disc 10 and the rotating disc 13.

[0037] See also Figure 3 and Figure 4 The air inlet disc 10 is rotatably connected to the side facing the first filter disc 7 with a second telescopic cylinder 19. 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 side away from the air inlet disc 10 with a second fixed cylinder 21 fixedly connected to the inner wall of the rear air cover 6. The second fixed cylinder 21 is communicated with the filter holes of the first filter disc 7.

[0038] See also Figure 2 and Figure 3 An air inlet hole 1001 is provided at the center of the air inlet disk 10, an exhaust hole 1201 is provided on the exhaust disk 12 and is connected to the inner cavity of the first sliding cylinder 15, the exhaust disk 12 is slidably connected to the rear rotating shaft 9, and the rotating disk 13 is provided with a sliding hole 1301 for the blades 11 to slide; a plurality of first heat dissipation channels 101 are provided in the shell wall of the shell cylinder 1, and one end opening of the first heat dissipation channel 101 is set on the side wall of the shell cylinder 1 away from the front cover 5 and is connected to the inner cavity of the rear air hood 6, and the other end opening is set on the circumferential side wall of the shell cylinder 1 and is connected to the external atmosphere.

[0039] For details, please refer to Figure 6 and Figure 8 The rear 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 exhaust disk 12 to rotate. The portion of the blade 11 between the rotating disk 13 and the air inlet disk 10 is defined as the effective blade portion. The centrifugal negative pressure generated by the rotation of the effective blade portion causes the airflow to pass through the filter holes of the first filter disk 7 and enter the second telescopic cylinder 19, and then pass through the air inlet hole 1001 into the centrifugal cavity between the rotating disk 13 and the air inlet disk 10, and then pass through the second filter disk 17 and the exhaust hole 1201 into the first telescopic cylinder 14, and finally blow toward the first heat dissipation channel 101 and be discharged into the atmosphere;

[0040] When the air intake volume needs to be changed, the first electric push rod 18 is started, and the first electric push rod 18 drives the first sliding cylinder 15 to move horizontally, and the first sliding cylinder 15 drives the exhaust disk 12 and the blade 11 to move horizontally, thereby changing the axial length of the effective blade portion of the blade 11 located between the air intake disk 10 and the rotating disk 13 (changing the contact area between the blade 11 and the airflow), thereby changing the air intake volume; at the same time, while the blade 11 slides horizontally along the rotating disk 13, the rotating disk 13 scrapes and cleans the dust blocks adhered to the blade 11, reducing the probability of dust adhering to the blade 11.

[0041] Compared with traditional heat dissipation motors, the present invention performs two-stage filtration on the airflow entering the rear air hood 6 through the first filter disc 7 installed on the side wall of the rear air hood 6 and the second filter disc 17 installed in the rear air hood 6, and cooperates with the shell tube 1 with the first heat dissipation channel 101 to reduce the probability of dust contacting various components in the motor and extend the service life of the motor. At the same time, through the rotating disc 13 slidably connected to the blade 11 and the first electric push rod 18 linked to the rotating disc 13, the lateral sliding of the rotating disc 13 relative to the blade 11 is utilized to scrape and clean the dust blocks adhered to the blade 11, thereby reducing the amount of dust adhered to the blade 11, reducing the motor load and energy consumption; in addition, by changing the axial length of the blade 11 between the rotating disc 13 and the air inlet disc 10, the effective contact area of ​​the blade 11 and the airflow is changed, thereby changing the air intake volume, adapting to different heat dissipation requirements, and balancing energy consumption and heat dissipation performance.

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

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

[0044] See also Figure 3 and Figure 5 The circumferential side walls of the air inlet disk 10 and the air exhaust disk 12 are both fixedly connected with arc-shaped protrusions 1202, and the inner walls of the first sliding cylinder 15 and the second sliding cylinder 20 are both provided with arc-shaped grooves 1501, and the arc-shaped protrusions 1202 are nested in the arc-shaped grooves 1501 and slide against the inner walls thereof.

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

[0046] See also Figure 1 and Figure 2 The multiple first heat dissipation channels 101 form multiple groups of channel groups that are equally distributed in an arc shape. The multiple first heat dissipation channels 101 in each group communicate with the external atmosphere in a point-like manner along a spiral line on the outer wall of the shell 1.

[0047] Specifically, through the multiple groups of first heat dissipation channels 101 , the airflow is fully in contact with the shell wall of the shell tube 1 and is exhausted in the radial direction, thereby improving the heat dissipation efficiency compared with the traditional exhaust channel that flows through the entire shell tube 1 in the axial direction.

[0048] See also Figure 2 and Figure 3 The rear shaft 9 is rotatably connected to the rear end side wall of the shell cylinder 1 through the first bearing 22, and the front shaft 4 is rotatably connected to the front cover 5 through the third bearing 25. The shell cylinder 1 is fixedly connected to the inner disk 23 between the front cover 5 and the stator 2. The front 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 have the same specifications. A guide plate 26 is fixedly connected between the front cover 5 and the inner disk 23. An annular gap for air flow is formed between the guide plate 26 and the front 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 in the first fixed cylinder 16, and the opening of the conical cavity toward the side of the shell cylinder 1 is arranged opposite to the first bearing 22. A plurality of second heat dissipation channels 102 are provided in the shell wall of the shell cylinder 1. The plurality of second heat dissipation channels 102 are evenly spaced from the plurality of first heat dissipation channels 101. The opening of the second heat dissipation channel 102 away from the side of the rear wind cover 6 is connected to the cavity enclosed by the inner disk 23 and the guide disk 26. An air outlet 103 is provided on the shell wall of the shell cylinder 1, and the cavity enclosed by the guide disk 26 and the front cover 5 is connected to the air outlet 103.

[0050] Specifically, by opening a first fixed cylinder 16 with an arc-shaped cavity and an inner disk 23 and a guide disk 26 fixed in the shell cylinder 1, in conjunction with the second heat dissipation channel 102 and the air outlet 103, the filtered air flow flows through the first bearing 22, the second bearing 24 and the third bearing 25 in sequence, thereby fully cooling the heat-generating bearings.

[0051] See also Figure 3 and Figure 4The openings of multiple first heat dissipation channels 101 and second heat dissipation channels 102 are equidistantly distributed on the circumference of the rear end surface of the shell tube 1. The rear end surface of the shell tube 1 slides against a rotating plug 33 arranged opposite to the opening. The rotating plug 33 is fixedly connected to the rear shaft 9 through a fixing bracket 34. The rear shaft 9 drives the rotating plug 33 to rotate in a circle through the fixing bracket 34.

[0052] Specifically, the rotating plug 33 rotates outside the circumferentially distributed connecting holes, so that the airflow intermittently enters the first heat dissipation channel 101 and the second heat dissipation channel 102, generating pulsed airflow, increasing the circulation speed of the airflow in the first heat dissipation channel 101 and the second heat dissipation channel 102, and improving the heat dissipation effect.

[0053] Second implementation method:

[0054] Figure 9-11 A high heat dissipation motor for petrochemical industry is shown. Based on the first embodiment, a dust exhaust groove 601 is opened on the side wall of the rear air hood 6. The dust exhaust groove 601 is located on the air inlet side of the second filter disc 17. A scraper bar 32 is fixedly connected to the rotating disc 13 and is in sliding contact with the second filter disc 17. The scraper bar 32 is arranged opposite to the dust exhaust groove 601.

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

[0056] See also Figure 3 The outer walls of the first sliding cylinder 15 and the second sliding cylinder 20 are both in sliding contact with the inner wall of the rear air hood 6.

[0057] Specifically, the first electric push rod 18 causes the first sliding cylinder 15 to abut against the second filter disc 17, so that the second filter disc 17 is blocked, and the airflow blows the dust accumulated on the second filter disc 17 toward the dust exhaust slot 601, thereby improving the dust exhaust effect.

[0058] See also Figure 9 and Figure 10 The outer wall of the rear air hood 6 is fixedly connected to an annular cover 28 that is connected to the dust exhaust 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 air hood 6. The outer wall of the annular cylinder 29 is provided with multiple exhaust holes 2901.

[0059] Specifically, the airflow enters the annular cover 28 through the dust exhaust groove 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 hole 2901 .

[0060] See also Figure 11A gate plate 30 is slidably connected in the dust discharge groove 601 , and the gate plate 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 started, the dust exhaust groove 601 is opened, and the air flow carries the dust through the annular cover 28 into the annular cylinder 29, thereby realizing centralized collection of dust and facilitating cleaning; it should be noted that a accommodating chamber for accommodating the gate plate 30 and the second electric push rod 31 is opened in the shell wall of the shell cylinder 1.

[0062] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high heat dissipation motor for petrochemical industry, characterized in that: The invention comprises a shell (1) and a front cover (5) fixedly connected to the front end of the shell (1); a stator (2) is fixedly connected to the shell (1); a rotor (3) rotatably connected to the shell (1) is provided on the inner side of the stator (2); the rotor (3) comprises a rotor core arranged on the inner side of the stator (2) and a front rotating shaft (4) and a rear rotating shaft (9) arranged on both sides of the rotor core and fixedly connected to the rotor core; 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 in the rear air hood (6); the centrifugal impeller (8) comprises An air inlet disk (10) is arranged opposite to the first filter disk (7), and a plurality of blades (11) are fixedly connected to the side of the air inlet disk (10) away from the first filter disk (7) and are distributed equidistantly around the circumference. An end of the blade (11) away from the air inlet disk (10) is fixedly connected to the exhaust disk (12). A rotating disk (13) is provided between the air inlet disk (10) and the exhaust disk (12) and is slidably connected to the blade (11). A second filter disk (17) fixedly connected to the inner wall of the rear air hood (6) is rotatably connected to the outer side of the rotating disk (13). The rotating disk (13) is fixedly connected to the rear rotating shaft (9) at the center of the side wall of the exhaust disk (12). The exhaust disc (12) is rotatably connected to the side of the shell cylinder (1) with a first telescopic cylinder (14), the first telescopic cylinder (14) includes a first sliding cylinder (15) rotatably connected to the exhaust disc (12), the first sliding cylinder (15) is slidably connected to the inner side of the first fixed cylinder (16) fixedly connected to the inner wall of the rear wind cover (6), the fixed end of the first electric push rod (18) is fixed on the side wall of the first fixed cylinder (16), and 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 disc (10) is rotatably connected to the side of the first filter disc (7), 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 wind cover (6) on the side away from the air inlet disc (10), and the second fixed cylinder (21) is communicated with the filter hole of the first filter disc (7); The air inlet disk (10) is provided with an air inlet hole (1001) at the center position, the air exhaust disk (12) is provided with an air exhaust hole (1201) connected to the inner cavity of the first sliding cylinder (15), the air exhaust disk (12) is slidably connected to the rear rotating shaft (9), and the rotating disk (13) is provided with a sliding hole (1301) for the blades (11) to slide; a plurality of first heat dissipation channels (101) are provided in the shell wall of the shell cylinder (1), one end opening of the first heat dissipation channel (101) is arranged on the side wall of the shell cylinder (1) away from the front cover (5) and is connected to the inner cavity of the rear wind cover (6), and the other end opening is arranged on the circumferential side wall of the shell cylinder (1) and is connected to the external atmosphere.

2. A 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), and 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 industry according to claim 2, characterized in that: The side wall of the rear air hood (6) is provided with a dust discharge groove (601), which 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 is in sliding contact with the second filter disc (17); the scraper (32) and the dust discharge groove (601) are arranged opposite to each other; the outer walls of the first sliding cylinder (15) and the second sliding cylinder (20) are both in sliding contact with the inner wall of the rear air hood (6).

4. A high heat dissipation motor for petrochemical industry according to claim 3, characterized in that: The outer wall of the rear air hood (6) is fixedly connected to an annular cover (28) that is in communication with the dust exhaust groove (601); the annular cover (28) is threadedly connected to an annular cylinder (29); the annular cylinder (29) is in sliding contact with the outer wall of the rear air hood (6); the outer wall of the annular cylinder (29) is provided with a plurality of exhaust holes (2901); a gate plate (30) is slidably connected in the dust exhaust 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. The high heat dissipation motor for petrochemical industry according to claim 1, characterized in that: The air inlet disc (10) and the air exhaust disc (12) are both fixedly connected with an arc-shaped protrusion (1202) on their circumferential side walls, and the inner walls of the first sliding cylinder (15) and the second sliding cylinder (20) are both provided with an arc-shaped groove (1501), and the arc-shaped protrusion (1202) is nested in the arc-shaped groove (1501) and slides against the inner wall thereof.

6. The high heat dissipation motor for petrochemical industry according to claim 1, characterized in that: The plurality of first heat dissipation channels (101) form a plurality of arc-shaped channel groups that are equidistantly distributed, and the openings for communicating with the external atmosphere of the plurality of first heat dissipation channels (101) in each group are distributed in a dotted manner along a spiral line on the outer wall of the shell (1).

7. The high heat dissipation motor for petrochemical industry according to claim 1, characterized in that: The rear rotating shaft (9) is rotatably connected to the rear end side wall of the shell barrel (1) through the first bearing (22), the front rotating shaft (4) is rotatably connected to the front cover (5) through the third bearing (25), the shell barrel (1) is fixedly connected to an 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), and the first bearing (22), the second bearing (24) and the third bearing (25) have the same specifications; a guide disk (26) is fixedly connected between the front cover (5) and the inner disk (23), and an annular gap for air flow is formed between the guide disk (26) and the front rotating shaft (4), and the outer diameter of the annular gap is smaller than the outer diameter of the second bearing (24); A conical cavity is provided in the first fixed cylinder (16), and the opening of the conical cavity toward the side of the shell cylinder (1) is arranged opposite to the first bearing (22). A plurality of second heat dissipation channels (102) are provided in the shell wall of the shell cylinder (1), and the plurality of second heat dissipation channels (102) and the plurality of first heat dissipation channels (101) are evenly distributed at intervals. The opening of the second heat dissipation channel (102) away from the side of the rear wind shield (6) is communicated with a cavity enclosed by the inner disk (23) and the guide disk (26). An air outlet (103) is provided on the shell wall of the shell cylinder (1), and the cavity enclosed by the guide disk (26) and the front cover (5) is communicated with the air outlet (103).

8. The high heat dissipation motor for petrochemical industry according to claim 7, characterized in that: The openings of the plurality of first heat dissipation channels (101) and second heat dissipation channels (102) are circumferentially and equidistantly distributed on the rear end face of the shell barrel (1). The rear end face of the shell barrel (1) is slidably abutted against a rotating plug (33) arranged opposite to the openings. The rotating plug (33) is fixedly connected to the rear rotating shaft (9) via a fixing frame (34).

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