Heat dissipation structure for industrial motor shell

Abstract

The invention belongs to the technical field of industrial motors, and particularly relates to a heat dissipation structure for an industrial motor shell, which comprises a shell, an air outlet groove is formed in the end of the shell, a T-shaped ring groove is formed in the end of the shell, a set of sliding grooves are formed in the end of the T-shaped ring groove, sliding rods are fixedly connected to the ends of the set of sliding grooves through springs, a T-shaped ring block is fixedly connected between the ends of the set of sliding rods, and a dust cover is fixedly connected to the side wall of the T-shaped ring block. Air inlet grooves are formed in the outer circular wall and the end part of the dust cover; a fixing ring is arranged on the inner circle wall of the shell, a rotating shaft is rotationally connected between the end of the shell and the inner ring wall of the fixing ring, and a set of fan blades are fixedly connected to the rotating shaft; through cooperation of the supporting columns driven by centrifugal force and the springs, when the rotating speed of the rotating shaft of the motor is increased, the dustproof cover is automatically ejected open, the exposed area of the air inlet groove is increased, the air inflow is dynamically adjusted, and the motor is effectively prevented from being damaged due to high-load overheating.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial motors, in particular to a heat dissipation structure for an industrial motor housing. Background Art

[0002] Industrial motors generate a large amount of heat during operation, and the heat dissipation structure of the casing is key to ensuring stable operation of the motor. Common heat dissipation structures use fans, cooling fins, etc. to achieve air convection heat dissipation, and are equipped with dust covers to prevent dust from entering the motor.

[0003] In the prior art, the dust cover of an industrial motor is rigidly connected to the housing, and the air intake area of the dust cover is fixed. When the motor runs at high speed, the heat generated by it will also increase, and the fixed air intake area also makes it difficult to improve the heat dissipation efficiency; and the traditional rigid connection makes the vibration frequency of the dust cover and the housing close, which is easy to cause resonance. For this reason, the present invention provides a heat dissipation structure for an industrial motor housing. Summary of the Invention

[0004] In order to make up for the shortcomings of existing technology, the industrial motor dust cover and the housing are rigidly connected, and the air intake area of the dust cover is fixed. When the motor runs at high speed, the heat it generates will also increase, and the fixed air intake area also makes it difficult to improve the heat dissipation efficiency; and the traditional rigid connection makes the vibration frequency of the dust cover and the housing close, which is easy to cause resonance problems.

[0005] The technical solution adopted by the present invention to solve its technical problems is: the heat dissipation structure for an industrial motor casing described in the present invention comprises a shell; an air outlet slot is provided at the end of the shell, a T-ring slot is provided at the end of the shell, a group of sliding slots are provided at the end of the T-ring slot, a group of sliding slot ends are fixedly connected to sliding rods through springs, a group of sliding rod ends are fixedly connected with T-ring blocks, and the side walls of the T-ring blocks are fixedly connected with dust covers; an air intake slot is provided on the outer circular wall and the end of the dust cover; a fixing ring is provided on the inner circular wall of the shell, a rotating shaft is rotatably connected between the end of the shell and the inner ring wall of the fixing ring, and a group of fan blades are fixed on the rotating shaft; a circular groove and a limit groove are provided at the end of the rotating shaft, a support column is fixedly connected to the end of the circular groove through a spring, and the support column is slidably connected in the circular groove and the limit groove; an air intake slot is provided on the side wall of the fixing ring.

[0006] Preferably, a V-ring groove is provided at the proximal end of the support column near the dust cover, a cylinder is fixedly connected to the end of the support column, a rotating box is rotatably connected to the center of the end of the dust cover, and the positions of the cylinder and the rotating box correspond to each other; the cross-section of the rotating box is a truncated cone, and the end with a smaller radius of the rotating box is arranged toward the dust cover; an injection port is provided at the top of the rotating box.

[0007] Preferably, a guide ring is fixedly connected to the inner wall of the shell, the cross-section of the guide ring is a right-angled trapezoid, a spiral air guide groove is provided on the inclined surface of the guide ring, and the positions of the fan blades and the spiral air guide groove correspond to each other; the inner ring wall of the guide ring and the outer ring wall of the fixed ring are fixedly connected; the fixed ring is conical, and the tip of the cone is arranged toward the dust cover; a spiral guide groove is provided on the inclined surface of the fixed ring, and the spiral guide groove and the spiral air guide groove have the same spiral direction, and the spiral air guide groove and the air inlet groove are connected.

[0008] Preferably, the air inlet groove is formed by connecting an inlet groove, an outlet groove and a guide groove; the guide groove is connected to the inlet groove and the outlet groove; the guide groove is wavy, the outlet groove is connected to the guide groove at the trough, and the inlet groove is connected to the guide groove at the crest; filters are provided in the inlet groove and the outlet groove.

[0009] Preferably, the air inlet groove setting direction of the dust cover end is composed of three parts, which are the inner ring, the middle ring and the outer ring from the center to the edge of the dust cover end; the inner ring is tilted toward the edge of the dust cover end, the middle ring is parallel to the rotating shaft, and the outer ring is tilted toward the middle of the dust cover end.

[0010] Preferably, the air inlet grooves on the outer circular wall of the dust cover are all inclined toward the fan blades, and the inclination angle gradually increases from the rotating box to the fan blades.

[0011] Preferably, a baffle is fixedly connected to the inner ring wall at the lowest end of the guide ring, and the baffle is in contact with the fixed ring and corresponds to the position of one end of the spiral guide groove.

[0012] Preferably, ventilation grooves are provided on the inner walls of the sliding groove and the circular groove.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The heat dissipation structure for an industrial motor housing described in the present invention solves the problem of insufficient heat dissipation efficiency at different motor speeds by linking a dust cover with an adjustable air intake area with a centrifugal support column, thereby automatically increasing the air intake volume during high-speed operation and enhancing the heat dissipation effect.

[0015] 2. The heat dissipation structure for an industrial motor casing described in the present invention cooperates with the spiral air guide groove and the conical fixing ring, so that the air flow enters the casing in a spiral shape and in an orderly manner, thereby enhancing the air flow disturbance. Combined with the air intake groove design at a special angle between the end of the dust cover and the outer circular wall, the air intake path is optimized, the air flow impact loss is reduced, and the heat inside the motor is evenly and efficiently dissipated, with more comprehensive heat dissipation coverage.

[0016] 3. The heat dissipation structure for an industrial motor casing described in the present invention has a wavy guide groove in the air inlet groove, which is combined with a filter screen, an interception ring net and an adsorption pad to filter dust and impurities through multiple methods such as inertial collision, physical interception and adsorption. Compared with a single filter screen structure, it can reduce the amount of dust entering the motor, effectively protect the core components of the motor, and reduce the frequency of failures caused by dust accumulation.

[0017] 4. The heat dissipation structure for an industrial motor casing described in the present invention utilizes an elastic guiding system composed of a sliding groove, a sliding rod, and a spring to replace the traditional rigid connection; when the motor generates vibration during operation, the sliding assembly absorbs the impact energy through the spring buffer, and at the same time, the uniform guiding effect prevents the dust cover from shaking and deviating, thereby reducing the risk of resonance, extending the service life of the motor, and ensuring operational stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a perspective view of the present invention;

[0020] Figure 2 is a front cross-sectional view of the present invention;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 yes Figure 2 Enlarge the middle B;

[0023] Figure 5 It is a side view of the structure of the present invention;

[0024] Figure 6 It is a front cross-sectional view of the housing and the dust cover of the present invention;

[0025] Figure 7 It is an exploded view of the internal structure of the shell in the present invention.

[0026] In the figure: 1. Shell; 2. T-ring groove; 3. Sliding groove; 4. Sliding rod; 5. T-ring block; 6. Dust cover; 7. Air inlet groove; 8. Fixed ring; 9. Rotating shaft; 10. Fan blade; 11. Circular groove; 12. Limiting groove; 13. Support column; 14. Air inlet groove; 15. V-ring groove; 16. Cylinder; 17. Rotating box; 18. Guide ring; 19. Spiral air guide groove; 20. Spiral guide groove; 21. Inlet groove; 22. Outlet groove; 23. Guide groove; 24. Baffle; 25. Ventilation groove. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] Example 1

[0029] like Figures 1 to 7 As shown, a heat dissipation structure for an industrial motor housing according to an embodiment of the present invention includes a housing 1; an air outlet slot is provided at the end of the housing 1, a T-ring slot 2 is provided at the end of the housing 1, a group of sliding slots 3 are provided at the end of the T-ring slot 2, a group of sliding slots 3 are fixed to the ends of each sliding slot 3 by a spring, a group of sliding rods 4 are fixed between the ends of each sliding rod 4, a dust cover 6 is fixed to the side wall of the T-ring block 5; an air inlet slot 7 is provided on the outer circular wall and the end of the dust cover 6; A fixing ring 8 is provided on the inner circular wall of the housing 1. A rotating shaft 9 is rotatably connected between the end of the housing 1 and the inner circular wall of the fixing ring 8. A group of fan blades 10 are fixed to the rotating shaft 9. A circular groove 11 and a limit groove 12 are opened at the end of the rotating shaft 9. A support column 13 is fixed to the end of the circular groove 11 through a spring, and the support column 13 is slidably connected in the circular groove 11 and the limit groove 12. An air inlet groove 14 is opened on the side wall of the fixing ring 8. When working, when the motor generates heat, the rotating shaft 9 drives the fan blades 10 Rotation, air enters from the air inlet groove 7 of the dust cover 6. The setting of the air inlet groove 7 allows the air to flow in smoothly. After being accelerated by the fan blades 10, the air enters the housing 1 through the air inlet groove 14 on the fixing ring 8 to dissipate heat inside the motor. The hot air is finally discharged from the air outlet groove at the end of the housing 1. When the speed of the rotating shaft 9 accelerates, the support column 13 overcomes the tension of the spring at its end under the action of centrifugal force and moves toward the dust cover 6, thereby causing the support column 13 to push the dust cover 6 open, causing the T-ring block 5 to slide in the T-ring groove 2, exposing more air inlet grooves 7 on the outer wall of the dust cover 6. Driven by the fan blades 10, the air intake area of the dust cover 6 is increased, thereby enhancing the heat dissipation effect. The establishment of the sliding groove 3 and the sliding column provides a balanced and uniform guide for the movement of the dust cover 6 to prevent it from vibrating during subsequent work. The establishment of the T-ring groove 2 and the T-ring block 5 limits the maximum moving distance of the dust cover 6 to prevent the dust cover 6 from moving out of the housing 1.

[0030] Furthermore, the bottom of the shell 1 is slidably connected to a support plate through a sliding groove, and the support plate and the dust cover 6 are fixedly connected; this increases the guiding force for the movement of the dust cover 6 to prevent it from shaking.

[0031] The support column 13 is provided with a V-ring groove 15 near the proximal end of the dust cover 6, and the end of the support column 13 is fixedly connected to a cylinder 16, and the center of the end of the dust cover 6 is rotatably connected to a rotating box 17, and the positions of the cylinder 16 and the rotating box 17 correspond to each other; the cross-section of the rotating box 17 is truncated cone-shaped, and the end with the smaller radius of the rotating box 17 is arranged toward the dust cover 6; an injection port is provided on the top of the rotating box 17; when working, when the motor is running, the rotating shaft 9 rotates to drive the support column 13 to rotate, and under the action of centrifugal force, the support column 13 moves and opens the dust cover 6, so that the dust cover 6 is away from the housing 1. The V-ring groove 15 and the cylinder 16 are set to reduce the rotational contact area between the support column 13 and the dust cover 6, and avoid generating a large amount of heat due to rotational friction. The rotating box 17 is arranged outside the dust cover 6 for easy replacement and replenishment of lubricating oil, thereby reducing rotational wear on the dust cover 6.

[0032] Example 2

[0033] like Figures 1 to 7 As shown, the inner wall of the shell 1 is fixed with a guide ring 18, the cross section of the guide ring 18 is a right-angled trapezoid, a spiral air guide groove 19 is provided on the inclined surface of the guide ring 18, and the fan blades 10 and the spiral air guide groove 19 are positioned correspondingly; the inner ring wall of the guide ring 18 is fixedly connected to the outer ring wall of the fixed ring 8; the fixed ring 8 is conical, and the conical tip is arranged toward the dust cover 6; a spiral guide groove 20 is provided on the inclined surface of the fixed ring 8, and the spiral guide groove 20 and the spiral air guide groove 19 have the same spiral direction, and the spiral air guide groove 19 and the air inlet groove are aligned. 14 is connected; when working, the fan blades 10 rotate to generate airflow, and the airflow flows along the spiral air guide groove 19 on the inclined surface of the guide ring 18. Since the spiral air guide groove 19 and the spiral guide groove 20 on the inclined surface of the fixing ring 8 have the same spiral direction and are connected, the airflow is guided to the spiral guide groove 20 of the fixing ring 8, and then enters the housing 1 through the air inlet groove 14; this spiral guide structure allows the airflow to enter in a spiral shape and in an orderly manner, thereby enhancing the disturbance of the airflow in the housing 1 and improving the heat dissipation efficiency. At the same time, it can also make the airflow more evenly distributed inside the motor for heat dissipation.

[0034] The air inlet slot 14 is formed by connecting an inlet slot 21, an outlet slot 22 and a guide slot 23; the guide slot 23 is connected to the inlet slot 21 and the outlet slot 22; the guide slot 23 is wavy, the outlet slot 22 is connected to the trough of the guide slot 23, and the inlet slot 21 is connected to the crest of the guide slot 23; the inlet slot 21 and the outlet slot 22 are both provided with a filter; during operation, when the air moves along the spiral guide slot 20, part of the gas enters from the inlet slot 21, and part of the air enters the inlet slot 21 in the next circle of the spiral guide slot 20, and circulates in sequence. The filter in the inlet slot 21 initially filters dust and other impurities, and then the air enters the wavy guide slot 23, which changes the direction and flow rate of the airflow, so that the remaining dust in the air collides and adheres to the wall of the guide slot 23 under the action of inertia, further filtering the air, and the purified air flows out from the outlet slot 22 into the housing 1. The filter in the outlet slot 22 prevents dust from entering in the opposite direction, ensuring that the air entering the motor is relatively clean.

[0035] Furthermore, a plurality of interception ring nets and adsorption pads are provided in the guide groove 23 ; by providing the interception ring nets and adsorption pads, dust and impurities can be intercepted by the gas when it moves along the wavy guide groove 23 .

[0036] The setting direction of the air intake groove 7 at the end of the dust cover 6 is composed of three parts, and the inner ring, the middle ring and the outer ring are arranged from the center to the edge of the end of the dust cover 6; the inner ring is tilted toward the edge of the end of the dust cover 6, the middle ring is parallel to the rotating shaft 9, and the outer ring is tilted toward the middle of the end of the dust cover 6; when working, the air intake groove 7 at the end of the dust cover 6 is set in different directions. The tilted setting of the inner ring can make the air converge from the center to the edge, and the setting of the middle ring parallel to the rotating shaft 9 ensures that a part of the air can enter smoothly along the axial direction to ensure the air intake volume. The tilted setting of the outer ring can make the air gather from the edge to the center. The three parts of the air intake groove 7 cooperate to make the air enter from the end of the dust cover 6 more evenly, optimize the air intake effect, and improve the overall heat dissipation efficiency.

[0037] Example 3

[0038] like Figures 1 to 7 As shown, the air inlet grooves 7 on the outer circular wall of the dust cover 6 are all inclined toward the fan blades 10, and the inclination angle gradually increases from the rotating box 17 to the fan blades 10; when working, the air inlet grooves 7 on the outer circular wall of the dust cover 6 are inclined toward the fan blades 10, and the inclination angle gradually increases from the rotating box 17 to the fan blades 10; such a design allows the air to enter, as it approaches the fan blades 10, the air flow direction gradually better merges with the air flow direction generated by the rotation of the fan blades 10, reducing the air flow impact loss, so that the air can be more smoothly driven by the fan blades 10 into the shell 1, enhancing the air intake effect and improving the heat dissipation capacity; at the same time, the air inlet grooves 7 set at different inclination angles at the end of the dust cover 6 are matched, and the air inlet grooves 7 of the outer circle are inclined toward the center of the dust cover 6, which avoids the air intake conflict with the air inlet grooves 7 on the outer circular wall of the dust cover 6 and optimizes the air intake path.

[0039] A baffle 24 is fixedly connected to the inner ring wall at the lowest end of the guide ring 18, and the baffle 24 is in contact with the fixed ring 8 and corresponds to one end of the spiral guide groove 20; when working, the baffle 24 is set on the inner ring wall at the lowest end of the guide ring 18, in contact with the fixed ring 8 and corresponding to one end of the spiral guide groove 20; when the air flow flows along the spiral guide groove 19 and the spiral guide groove 20, some impurities carried in the gas are blocked by the filter and move along the spiral guide groove 20 with the gas until they move to the position of the baffle 24 and are collected. The dust cover 6 can be opened regularly to clear the collected dust and impurities.

[0040] The inner walls of the sliding groove 3 and the circular groove 11 are both provided with ventilation grooves 25; during operation, the ventilation grooves 25 on the inner walls of the sliding groove 3 and the circular groove 11 can balance the air pressure in the grooves. When the sliding rod 4 slides in the sliding groove 3 and the support column 13 moves in the circular groove 11, the ventilation grooves 25 can allow the air in the grooves to flow in and out smoothly, avoiding obstructions caused by changes in air pressure, ensuring that the sliding rod 4 and the support column 13 can move flexibly, and ensuring that the relevant buffering and lubrication functions are normally realized.

[0041] Working principle: When the motor generates heat, the shaft 9 drives the fan blades 10 to rotate, and air enters from the air inlet slot 7 of the dust cover 6. The setting of the air inlet slot 7 allows the air to flow in smoothly. After being accelerated by the fan blades 10, the air enters the housing 1 through the air inlet slot 14 on the fixing ring 8 to dissipate heat inside the motor, and the hot air is finally discharged from the air outlet slot at the end of the housing 1; when the speed of the shaft 9 accelerates, the support column 13 overcomes the tension of the spring at its end under the action of centrifugal force and moves toward the dust cover 6, thereby causing the support column 13 to push the dust cover 6 open, causing the T-ring block 5 to slide in the T-ring groove 2, exposing more air inlet slots 7 on the outer wall of the dust cover 6. Driven by the fan blades 10, the air intake area of the dust cover 6 is increased, thereby enhancing the heat dissipation effect; the establishment of the sliding groove 3 and the sliding column both provide balanced and uniform guidance for the movement of the dust cover 6 to avoid vibration in subsequent work. 2 and the establishment of the T-ring block 5 limit the maximum moving distance of the dust cover 6, preventing the dust cover 6 from moving away from the housing 1. When the motor is running, the rotating shaft 9 rotates to drive the support column 13 to rotate, and under the action of centrifugal force, the support column 13 moves and opens the dust cover 6, so that the dust cover 6 is away from the housing 1. The establishment of the V-ring groove 15 and the cylinder 16 is to reduce the rotational contact area between the support column 13 and the dust cover 6 to avoid a large amount of heat generated by rotational friction. The rotating box 17 is arranged outside the dust cover 6 for easy replacement and replenishment of lubricating oil, reducing rotational wear on the dust cover 6. The fan blades 10 rotate to generate airflow, which flows along the spiral air guide groove 19 on the inclined surface of the guide ring 18. Since the spiral air guide groove 19 and the spiral guide groove 20 on the inclined surface of the fixing ring 8 have the same spiral direction and are connected, the airflow is guided to the spiral guide groove 20 of the fixing ring 8, and then enters the housing 1 through the air inlet groove 14;This spiral guide structure allows the airflow to enter in a spiral shape in an orderly manner, thereby enhancing the disturbance of the airflow in the housing 1 and improving the heat dissipation efficiency. At the same time, it can also make the airflow more evenly distributed inside the motor for heat dissipation. In the process of air moving along the spiral guide groove 20, part of the gas enters from the inlet groove 21, and part of the air enters the inlet groove 21 in the next circle of the spiral guide groove 20, and circulates in sequence. The filter in the inlet groove 21 initially filters dust and other impurities, and then the air enters the wavy guide groove 23. The guide groove 23 changes the direction and flow rate of the airflow, so that the remaining dust in the air collides and adheres to the wall of the guide groove 23 under the action of inertia, further filtering the air, and the purified air is discharged from The outlet groove 22 flows out into the housing 1, and the filter screen inside the outlet groove 22 prevents dust from entering in the opposite direction, ensuring that the air entering the motor is relatively clean. The air inlet groove 7 at the end of the dust cover 6 is set in different directions. The inner circle is tilted to make the air converge from the center to the edge. The middle circle is parallel to the rotating shaft 9 to ensure that a part of the air can enter smoothly along the axial direction to ensure the air intake. The outer circle is tilted to make the air gather from the edge to the center. The three parts of the air inlet groove 7 cooperate to make the air enter more evenly from the end of the dust cover 6, optimize the air intake effect, and improve the overall heat dissipation efficiency. The air inlet groove 7 on the outer wall of the dust cover 6 is tilted toward the fan blade 10, and the tilt angle is from the rotating box 17 to the fan blade 10 Gradually increases; such a design allows the air to enter, as it approaches the fan blades 10, and the airflow direction gradually merges better with the airflow direction generated by the rotation of the fan blades 10, reducing the airflow impact loss, so that the air can be more smoothly driven by the fan blades 10 into the housing 1, thereby enhancing the air intake effect and improving the heat dissipation capacity; at the same time, the air intake grooves 7 provided at different inclination angles at the end of the dust cover 6 cooperate with the air intake grooves 7 of the outer ring to be inclined toward the center of the dust cover 6, thereby avoiding the air intake conflict with the air intake grooves 7 on the outer circular wall of the dust cover 6, and optimizing the air intake path. The baffle 24 is provided on the inner ring wall at the lowest end of the guide ring 18, contacts the fixed ring 8 and corresponds to one end of the spiral guide groove 20; As air flows along the spiral air guide groove 19 and the spiral guide groove 20, some impurities carried in the air are blocked by the filter and continue to move along the spiral guide groove 20 with the air until they are collected at the baffle 24. The dust cover 6 can be opened periodically to clear the collected dust and impurities. The ventilation grooves 25 on the inner walls of the sliding groove 3 and the circular groove 11 balance the air pressure within the grooves. When the sliding rod 4 slides within the sliding groove 3 and the support column 13 moves within the circular groove 11, the ventilation grooves 25 allow air to flow in and out smoothly, avoiding obstructions caused by air pressure changes, ensuring the flexible movement of the sliding rod 4 and the support column 13, and ensuring the normal performance of the relevant buffering and lubrication functions.

[0042] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for an industrial motor housing, characterized in that: The invention comprises a shell (1); an air outlet slot is provided at the end of the shell (1); a T-ring slot (2) is provided at the end of the shell (1); a group of sliding slots (3) are provided at the end of the T-ring slot (2); a group of sliding slots (3) are fixedly connected to sliding rods (4) at the ends of each group of sliding rods (4) via springs; a T-ring block (5) is fixedly connected between the ends of each group of sliding rods (4); a dust cover (6) is fixedly connected to the side wall of the T-ring block (5); an air inlet slot (7) is provided at the outer circular wall and the end of the dust cover (6); the shell (1 ) is provided with a fixing ring (8) on the inner circular wall, a rotating shaft (9) is rotatably connected between the end of the shell (1) and the inner circular wall of the fixing ring (8), and a group of fan blades (10) are fixedly connected to the rotating shaft (9); a circular groove (11) and a limiting groove (12) are provided at the end of the rotating shaft (9), a support column (13) is fixed to the end of the circular groove (11) through a spring, and the support column (13) is slidably connected in the circular groove (11) and the limiting groove (12); an air inlet groove (14) is provided on the side wall of the fixing ring (8).

2. The heat dissipation structure for an industrial motor housing according to claim 1, characterized in that: The support column (13) is provided with a V-ring groove (15) near the proximal end of the dust cover (6); a cylinder (16) is fixedly connected to the end of the support column (13); a rotating box (17) is rotatably connected to the center of the end of the dust cover (6), and the positions of the cylinder (16) and the rotating box (17) correspond to each other; the cross section of the rotating box (17) is truncated cone-shaped, and the end with the smaller radius of the rotating box (17) is arranged toward the dust cover (6); and an injection port is provided at the top of the rotating box (17).

3. The heat dissipation structure for an industrial motor housing according to claim 2, characterized in that: The inner wall of the shell (1) is fixedly connected with a guide ring (18), the cross section of the guide ring (18) is a right-angled trapezoid, a spiral air guide groove (19) is provided on the inclined surface of the guide ring (18), and the positions of the fan blade (10) and the spiral air guide groove (19) correspond to each other; the inner ring wall of the guide ring (18) is fixedly connected with the outer ring wall of the fixed ring (8); the fixed ring (8) is conical, and the conical tip is arranged toward the dust cover (6); a spiral guide groove (20) is provided on the inclined surface of the fixed ring (8), and the spiral lines of the spiral guide groove (20) and the spiral air guide groove (19) are in the same direction, and the spiral air guide groove (19) and the air inlet groove (14) are connected.

4. The heat dissipation structure for an industrial motor housing according to claim 3, characterized in that: The air inlet groove (14) is formed by connecting an inlet groove (21), an outlet groove (22) and a guide groove (23); the guide groove (23) is connected to the inlet groove (21) and the outlet groove (22); the guide groove (23) is wavy, the outlet groove (22) and the guide groove (23) are connected at the trough, and the inlet groove (21) and the guide groove (23) are connected at the crest; and filters are provided in the inlet groove (21) and the outlet groove (22).

5. The heat dissipation structure for an industrial motor housing according to claim 4, characterized in that: The air inlet groove (7) at the end of the dust cover (6) is arranged in a direction consisting of three parts, and the inner ring, the middle ring and the outer ring are arranged from the center to the edge of the end of the dust cover (6); the inner ring is arranged obliquely toward the edge of the end of the dust cover (6), the middle ring is arranged parallel to the rotating shaft (9), and the outer ring is arranged obliquely toward the middle of the end of the dust cover (6).

6. The heat dissipation structure for an industrial motor housing according to claim 5, characterized in that: The air inlet grooves (7) on the outer circular wall of the dust cover (6) are all inclined toward the fan blades (10), and the inclination angle gradually increases from the rotating box (17) to the fan blades (10).

7. The heat dissipation structure for an industrial motor housing according to claim 6, characterized in that: A baffle (24) is fixedly connected to the inner ring wall at the lowest end of the guide ring (18), and the baffle (24) is in contact with the fixed ring (8) and corresponds to one end position of the spiral guide groove (20).

8. The heat dissipation structure for an industrial motor housing according to claim 7, characterized in that: The inner walls of the sliding groove (3) and the circular groove (11) are both provided with ventilation grooves (25).

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