Energy-saving motor and industrial fan using the same

Abstract

The application relates to the technical field of motors, in particular to an energy-saving motor and an industrial fan using the same, which comprises a motor body, a heat dissipation shell connected to the rear side of the motor body, a heat dissipation fan installed in the heat dissipation shell, a plurality of circular channels formed in the circumferential wall surface of the heat dissipation shell, a filtering mechanism arranged in the circular channels, the filtering mechanism comprising a turnover shaft and four annular frames, and a turnover driving mechanism arranged on the heat dissipation shell; among the four annular frames, the first filter screen and the second filter screen are detachably arranged on the two pairs of oppositely and symmetrically arranged annular frames, the mesh aperture of the first filter screen is larger than that of the second filter screen, and the adjacently arranged first filter screen and second filter screen are perpendicular to each other in space; the first filter screen and the second filter screen with different mesh apertures are switched by the turnover driving mechanism, so that the reliability and stability of the energy-saving motor under different environments are improved, and the service life of the energy-saving motor is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to an energy-saving electric machine and an industrial fan using the same. BACKGROUND

[0002] In modern industrial production, electric machines as core power equipment are widely used in various production scenes. However, a large amount of heat is generated during the operation of the electric machine. In order to ensure stable and efficient operation of the electric machine, heat dissipation becomes a key link. At present, most electric machines adopt a heat dissipation mode of setting a heat dissipation shell at the rear side of the main body of the electric machine and installing a heat dissipation fan inside, so as to take away heat through air flow to maintain a suitable working temperature of the electric machine.

[0003] Chinese Patent No. CN115459526A discloses a fan energy-saving electric machine, which comprises a motor shell, a cover plate arranged beside the motor shell, a motor main shaft rotatably connected to the motor shell, and a self-adaptive heat dissipation assembly arranged on the motor main shaft. The self-adaptive heat dissipation assembly comprises a rotating shell, a fixed ring, and a plurality of one-way locking components. In the present application, the self-adaptive heat dissipation assembly can effectively dissipate heat from the inside of the electric machine. When the rotating speed of the electric machine is low, the plurality of heat dissipation blades will not rotate with the motor main shaft, which can effectively avoid energy waste and make the electric machine more energy-saving. The dust cleaning assembly can automatically clean the dust attached to the plurality of heat dissipation blades, which can effectively reduce the cleaning frequency of the heat dissipation blades and keep the surface of the plurality of heat dissipation blades clean, thereby keeping the heat dissipation effect of the electric machine in a good state.

[0004] However, the industrial environment is complex and diverse, and the size and concentration of dust particles in different scenes differ greatly. In environments such as mines and quarries where the dust concentration is high and the particles are large, a large amount of large-particle dust will flow into the energy-saving electric machine along with the air flow. These dusts are easy to accumulate on the heat dissipation fan, heat dissipation channel, and key components inside the electric machine, which not only affects the heat dissipation effect and causes the energy-saving electric machine to overheat, but also in places such as electronic factories and pharmaceutical factories where the dust particle requirements are extremely strict, although the dust concentration in the environment is relatively low, the dust particles are extremely small. Once these tiny dusts enter the inside of the electric machine, they may adhere to the surface of the precision electronic components, affecting the transmission of electronic signals and causing short circuits and other faults. To solve the above problems, some energy-saving electric machines have adopted a design of replaceable filter screen, but this design has many inconveniences in actual operation. Workers need to frequently stop the machine to replace the filter screen, which is tedious and time-consuming. Therefore, there is an urgent need for an energy-saving electric machine that can automatically switch different aperture filter screens according to the size and concentration of dust particles in the industrial environment. SUMMARY

[0005] In order to solve the above problems, the application provides an energy-saving motor and an industrial fan using the motor. The first filter screen and the second filter screen with different mesh diameters are switched by a turnover driving mechanism. In the environment of mines and the like with high dust concentration and large particles, the first filter screen with a large mesh diameter can quickly intercept large particles of dust. In the environment of electronic factories and the like with strict requirements on dust, the second filter screen with a small mesh diameter can accurately filter small dust, so that the reliability and stability of the energy-saving motor in different environments are improved, and the service life of the energy-saving motor is prolonged.

[0006] In order to solve the above problems, the application provides an energy-saving motor and an industrial fan using the motor. The first filter screen and the second filter screen with different mesh diameters are switched by a turnover driving mechanism. In the environment of mines and the like with high dust concentration and large particles, the first filter screen with a large mesh diameter can quickly intercept large particles of dust. In the environment of electronic factories and the like with strict requirements on dust, the second filter screen with a small mesh diameter can accurately filter small dust, so that the reliability and stability of the energy-saving motor in different environments are improved, and the service life of the energy-saving motor is prolonged.

[0007] Preferably, a platform for placing the first filter screen and the second filter screen is formed between the annular frame and the turnover shaft, and the inner contour of the platform is consistent with the shape of the first filter screen and the second filter screen.

[0008] Preferably, the annular frame and the turnover shaft are made of iron, and permanent magnets are arranged at the edges of the first filter screen and the second filter screen to be magnetically attracted to the platform formed by the annular frame and the turnover shaft.

[0009] Preferably, a convex part for easy disassembly is arranged at the edge of the first filter screen and the second filter screen.

[0010] Preferably, a sealing strip is arranged on the outer wall of the annular frame to be tightly attached to the inner wall of the circular channel.

[0011] Preferably, the turnover driving mechanism comprises a driving shaft, a first bevel gear, a second bevel gear, a gear, a limiting frame and a rack, the driving shaft is coaxially arranged at the center of the heat dissipation shell and is rotatable, the axis of the driving shaft is collinear with the heat dissipation shell, one end of the driving shaft extends to the inside of the heat dissipation shell, the other end of the driving shaft extends to the outside of the heat dissipation shell, the first bevel gear is coaxially arranged at the end of the driving shaft close to the outside of the heat dissipation shell, the turnover shafts in each filtering mechanism are all towards the first bevel gear, the axes of the turnover shafts are perpendicular to the axis of the first bevel gear, the number of the second bevel gears is the same as that of the filtering mechanisms, and the second bevel gears are coaxially arranged at the ends of the turnover shafts close to the first bevel gear, the second bevel gears are arranged in meshing mode with the first bevel gear, the gear is coaxially arranged at the end of the driving shaft close to the inside of the heat dissipation shell, the limiting frame is arranged on the inner wall of the heat dissipation shell, the end of the driving shaft away from the first bevel gear is rotatably connected with the limiting frame, the rack is arranged on one side of the gear and is in meshing mode with the gear, the limiting frame is provided with limiting holes on both sides thereof for limiting the horizontal movement of the rack, and the heat dissipation shell is further provided with a linear driving component for driving the movement of the rack.

[0012] Preferably, the linear driving component comprises an electromagnet, the electromagnet is mounted on the outer wall of the heat dissipation shell, and the working end of the electromagnet is in transmission connection with one end of the rack through the side wall of the heat dissipation shell.

[0013] Preferably, the outside of the heat dissipation shell is provided with a dustproof shell capable of covering the first bevel gear and the second bevel gear, and the turnover shafts in each filtering mechanism are rotatably arranged to extend to the inside of the dustproof shell through the dustproof shell.

[0014] Preferably, the outside of the heat dissipation shell is further provided with a protection cover, a plurality of ventilation cutouts are formed in the protection cover, and the protection cover is detachably arranged on the heat dissipation shell through screws.

[0015] The application further provides an industrial fan comprising the energy-saving motor.

[0016] The application has the following beneficial effects compared with the prior art:

[0017] 1. The first filter screen and the second filter screen with different mesh diameters are switched by the turnover driving mechanism, the first filter screen with a large mesh diameter can quickly intercept large particles of dust in an environment with high dust concentration and large particles, such as a mine, and the second filter screen with a small mesh diameter can accurately filter tiny dust in an environment with strict dust requirements, such as an electronic factory, so that the reliability and stability of the energy-saving motor in different environments are improved, the service life of the energy-saving motor is prolonged, and the downtime caused by dust is reduced.

[0018] 2. The filter screen is designed by magnetic attraction and a protruding part, the annular frame and the turnover shaft are made of iron, the edge of the filter screen is provided with a permanent magnet, the filter screen is quickly fixed without tools during installation, and the filter screen is easily removed by overcoming the magnetic force with the aid of the protruding part during disassembly, so that the maintenance difficulty is reduced and the maintenance efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of an energy-saving motor.

[0020] Figure 2 It is a partial sectional view of an energy-saving motor.

[0021] Figure 3 It is a partial sectional view of an energy-saving motor.

[0022] Figure 4 It is a three-dimensional structure partial schematic diagram of a filtering mechanism of an energy-saving motor.

[0023] Figure 5 It is a three-dimensional structure partial exploded view of a filtering mechanism of an energy-saving motor.

[0024] Figure 6 It is a three-dimensional structure partial schematic diagram of a turnover driving mechanism of an energy-saving motor. Figure 1 .

[0025] Figure 7 It is a three-dimensional structure partial exploded view of a turnover driving mechanism of an energy-saving motor.

[0026] Figure 8 It is an enlarged view of A in Figure 7 .

[0027] Figure 9 It is a three-dimensional structure partial schematic diagram of a turnover driving mechanism of an energy-saving motor. Figure 2 .

[0028] Figure 10 It is a partial exploded view of an energy-saving motor.

[0029] In the figure, the reference signs are as follows: 1, motor main body; 2, heat dissipation shell; 3, heat dissipation fan; 4, circular channel; 5, filtering mechanism; 51, turnover shaft; 52, annular frame; 521, first filter screen; 522, second filter screen; 5221, permanent magnet; 5222, protruding part; 523, sealing strip; 53, platform; 6, turnover driving mechanism; 61, driving shaft; 62, first bevel gear; 63, second bevel gear; 64, gear; 65, limiting frame; 66, rack; 67, electromagnet; 68, dustproof shell; 7, touchproof cover; 71, ventilation cutout. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means and achieved specific purposes and functions of the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0031] Referring to Figure 1 ,Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in the figure: the present application provides a kind of energy-saving motor, including motor main body 1, motor main body 1 rear side is connected with heat dissipation shell 2, heat dissipation shell 2 inside is equipped with heat dissipation fan 3, is equipped with multiple circular channels 4 on the circumferential wall surface of heat dissipation shell 2, and the circular channels 4 are equidistantly distributed along the circumferential direction, filter mechanism 5 is arranged in the circular channel 4, filter mechanism 5 includes turnover shaft 51 and four annular frames 52, four annular frames 52 are equidistantly arranged on the outside of turnover shaft 51 along the axis direction of turnover shaft 51, heat dissipation shell 2 is also provided with turnover drive mechanism 6 for driving the turnover shaft 51 in each filter mechanism 5 to carry out 90 ° turnover action around its own axis, in four annular frames 52, the annular frame 52 of two pairs of relative and symmetrical arrangement is respectively detachably equipped with first filter screen 521 and second filter screen 522, the mesh aperture of first filter screen 521 is greater than the mesh aperture of second filter screen 522, and the first filter screen 521 and the second filter screen 522 adjacently arranged are perpendicular to each other in space.

[0032] Industrial environment is complex and various, and the size and concentration of dust particles are quite different in different scenes. In the environment of mines, quarries and other places with high dust concentration and large particles, a large amount of large-particle dust will flow into the energy-saving motor with the air. These dusts are easy to accumulate on the heat dissipation fan 3, the heat dissipation channel and the key components inside the motor, which not only affects the heat dissipation effect, causing the energy-saving motor to overheat, but also affects the electronic signal transmission and causes short circuit and other faults in electronic factories, pharmaceutical factories and other places where the dust particles are extremely small. To solve the above problems, some energy-saving motors use replaceable filter screens. However, this design has many inconveniences in actual operation. Workers need to frequently stop to replace the filter screens, which is tedious and time-consuming.

[0033] If the working environment of the energy-saving motor changes, for example, the size of the dust particles in the surrounding environment changes. For example, when there are more small-particle dusts in the environment, and the first filter screen 521 with large aperture is currently working, in order to better prevent small-particle dusts from entering the energy-saving motor, it is necessary to switch to the second filter screen 522 with small aperture. At this time, the turnover drive mechanism 6 on the heat dissipation shell 2 drives the turnover shaft 51 in each filter mechanism 5 to carry out 90 ° turnover action around its own axis, and the corresponding circular channels 4 are covered and filtered by the symmetrical second filter screens 522.

[0034] When the turnover shaft 51 is turned over, the annular frame 52 is turned over, so that the two first filter screens 521 or the two second filter screens 522, which originally do not cover the circular channel 4, are turned to positions covering the circular channel 4. Thus, in the process of discharging hot air, the switched first filter screen 521 or second filter screen 522 filters dust. Since the adjacent first filter screen 521 and second filter screen 522 are perpendicular to each other in space, the filter screen can be stably switched during the turnover process. The outlet of the circular channel 4 is covered by the two first filter screens 521 or the two second filter screens 522 to form a circular cross-section filter barrier, which accurately filters the discharged hot air, realizes the effect of automatically switching different aperture filter screens according to the size and concentration of dust particles in the industrial environment, blocks dust particles of different sizes, improves the heat dissipation effect of the energy-saving motor, and thus ensures the continuous and stable operation of the energy-saving motor in different environments.

[0035] Referring to Figure 4 and Figure 5 It is shown that the annular frame 52 and the turnover shaft 51 form a platform 53 for placing the first filter screen 521 and the second filter screen 522. The inner contour of the platform 53 is consistent with the shape of the first filter screen 521 and the second filter screen 522.

[0036] Referring to Figure 4 and Figure 5 It is shown that the annular frame 52 and the turnover shaft 51 are made of iron. The edges of the first filter screen 521 and the second filter screen 522 are provided with permanent magnets 5221 capable of being magnetically attracted to the platform 53 formed by the annular frame 52 and the turnover shaft 51.

[0037] When installing the first filter screen 521 and the second filter screen 522, the first filter screen 521 and the second filter screen 522 are placed on the platform 53 formed between the annular frame 52 and the turnover shaft 51. The platform 53 is consistent with the shape of the first filter screen 521 and the second filter screen 522, ensuring that the first filter screen 521 and the second filter screen 522 are more stable after installation.

[0038] By providing permanent magnets 5221 at the edges of the first filter screen 521 and the second filter screen 522, the permanent magnets 5221 are magnetically attracted to the platform 53 formed by the annular frame 52 and the turnover shaft 51 made of iron, simplifying the installation process of the filter screen. The operator only needs to place the filter screen with the magnet close to the platform 53 to quickly and accurately complete the installation without using additional tools or complex connection methods, improving the installation efficiency.

[0039] When the filter screen needs to be cleaned or replaced, due to the characteristics of magnetic attraction, the filter screen can be easily removed from the platform 53 by applying a certain external force to overcome the magnetic force, which is convenient and fast, and reduces the maintenance time and workload.

[0040] The magnetic connection mode makes the replacement of the first filter screen 521 and the second filter screen 522 more flexible. When it is necessary to replace filter screens with different pore diameters according to different working environments, the operation can be conveniently performed, and the adaptability of the energy-saving motor to different working conditions is improved.

[0041] Referring to Figure 4 and Figure 5 It is shown that the edges of the first filter screen 521 and the second filter screen 522 are each provided with a protruding part 5222 which is convenient to disassemble.

[0042] The protruding part 5222 provides an operating point for an operator. By grabbing the protruding part 5222, the operator can more easily overcome the magnetic resistance and take down the filter screen from the platform 53, thereby reducing the operation difficulty of the maintenance personnel and improving the efficiency of filter screen replacement and cleaning.

[0043] Referring to Figure 4 It is shown that the outer wall of the annular frame 52 is provided with a sealing strip 523 which can tightly fit the inner wall of the circular channel 4.

[0044] When the energy-saving motor operates, the cooling fan 3 operates to promote air flow. The air enters and exits through the circular channel 4 on the circumferential wall surface of the cooling shell 2. The sealing strip 523 on the outer wall of the annular frame 52 tightly fits the inner wall of the circular channel 4, forming a sealed barrier, which effectively prevents the air that has not been filtered by the filter screen from directly entering or flowing out of the motor interior from the gap between the annular frame 52 and the circular channel 4.

[0045] Referring to Figures 6 to 9 It is shown that the turnover driving mechanism 6 includes a driving shaft 61, a first bevel gear 62, a second bevel gear 63, a gear 64, a limiting frame 65 and a rack 66. The driving shaft 61 is rotatably arranged at the center of the cooling shell 2, the axis of the driving shaft 61 is collinear with the cooling shell, one end of the driving shaft 61 extends to the interior of the cooling shell, and the other end of the driving shaft 61 extends to the exterior of the cooling shell 2. The first bevel gear 62 is coaxially arranged at the end of the driving shaft 61 close to the exterior of the cooling shell 2. The turnover shaft 51 in each filter mechanism 5 is directed toward the first bevel gear 62. The axis of the turnover shaft 51 is vertically distributed with the axis of the first bevel gear 62. The number of the second bevel gears 63 is the same as the number of the filter mechanisms 5, and the second bevel gears 63 are coaxially arranged at the end of the turnover shaft 51 close to the first bevel gear 62. The second bevel gears 63 are meshingly arranged with the first bevel gear 62. The gear 64 is coaxially arranged at the end of the driving shaft 61 close to the interior of the cooling shell 2. The limiting frame 65 is arranged on the inner wall of the cooling shell 2. The end of the driving shaft 61 away from the first bevel gear 62 is rotatably connected with the limiting frame 65. The rack 66 is arranged on one side of the gear 64 and is meshed with the gear 64. The limiting holes for limiting the horizontal movement of the rack 66 are arranged on the two sides of the limiting frame 65. The cooling shell 2 is further provided with a linear driving component for driving the movement of the rack 66.

[0046] When the first filter screen 521 and the second filter screen 522 need to be switched, the linear driving component on the heat dissipation shell 2 is started to push or pull the rack 66 to move horizontally under the constraint of the limiting holes on both sides of the limiting frame 65. Since the rack 66 is engaged with the gear 64, the movement of the rack 66 drives the gear 64 to rotate around the axis of the driving shaft 61. The gear 64 is coaxially connected to the driving shaft 61, which in turn rotates the driving shaft 61. One end of the driving shaft 61 is located outside the heat dissipation shell 2 and coaxially installed with the first bevel gear 62. With the rotation of the driving shaft 61, the first bevel gear 62 is engaged with the second bevel gear 63 at the end of the turnover shaft 51 of each filter mechanism 5 to drive the turnover shaft 51 to rotate around its own axis when the second bevel gear 63 rotates. By moving the rack 66 a certain distance through the linear driving component, the turnover shaft 51 can be turned over 90° to cover the circular channel 4 with the first filter screen 521 and the second filter screen 522 of different pore sizes, so as to adapt to different dust environments and ensure efficient heat dissipation and dust prevention of the energy-saving motor.

[0047] Referring to Figure 6 and Figure 7 , the linear driving component includes an electromagnet 67 installed on the outer wall of the heat dissipation shell 2. The working end of the electromagnet 67 penetrates through the side wall of the heat dissipation shell 2 and is in transmission connection with one end of the rack 66.

[0048] When the control system sends instructions to the motor and the electromagnet 67 at the same time, on the one hand, the motor receives the instructions and adjusts the operating state according to the preset program, such as appropriately reducing the speed or stopping during the switching process of the first filter screen 521 or the second filter screen 522, to reduce internal airflow disturbance and prevent dust from entering the motor during the switching moment. On the other hand, after the electromagnet 67 receives the instructions, the coil is energized to generate a magnetic field, the iron core is magnetized to generate an electromagnetic force, the rack 66 is pushed to start moving under the action of the electromagnetic force, and the rack 66 moves horizontally under the constraint of the limiting frame 65 to drive the gear 64 to rotate, and then through the transmission of the driving shaft 61, the first bevel gear 62 and the second bevel gear 63, the turnover shaft 51 completes a 90° turning action to realize the switching of the first filter screen 521 and the second filter screen 522.

[0049] Referring to Figure 10 , a dustproof shell 68 is arranged outside the heat dissipation shell 2 to cover the first bevel gear 62 and the second bevel gear 63. The turnover shaft 51 in each filter mechanism 5 can rotate to extend to the inside of the dustproof shell 68.

[0050] The dustproof shell 68 completely wraps the first bevel gear 62 and the second bevel gear 63 to form an enclosed protective space, which serves as a physical barrier to effectively isolate external dust. When the energy-saving motor is running, no matter how high the ambient dust concentration is, the dustproof shell 68 can prevent dust from entering, avoid dust accumulation on the surface of the bevel gear, reduce the tooth surface wear of the first bevel gear 62 and the second bevel gear 63, and maintain the meshing accuracy of the first bevel gear 62 and the second bevel gear 63.

[0051] Reference Figure 10 As shown, a touch-proof cover 7 is further provided on the outside of the heat dissipation housing 2 , and a plurality of ventilation cutouts 71 are opened on the touch-proof cover 7 . The touch-proof cover 7 is detachably provided on the heat dissipation housing 2 by screws.

[0052] The anti-touch cover 7 wraps the annular frame 52 and other components that will flip over during operation. When the annular frame 52 rotates due to switching the filter, it can form a physical barrier to prevent people from directly contacting the moving parts. The ventilation cutouts 71 on the anti-touch cover 7 ensure that the heat dissipation of the energy-saving motor is not affected. The heat generated by the operation of the energy-saving motor can be dissipated in time through air convection through the ventilation cutouts 71 to maintain the normal operating temperature of the energy-saving motor. In addition, the anti-touch cover 7 and the heat dissipation housing 2 are detachably connected with screws, which is convenient for quick assembly when the motor is installed. During later inspection and maintenance, the screws can be unscrewed to separate it, making it convenient for staff to operate inside the energy-saving motor.

[0053] The present invention also provides an industrial fan, comprising the above-mentioned energy-saving motor.

[0054] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An energy-saving motor, comprising a motor body (1), a heat dissipation housing (2) connected to the rear side of the motor body (1), a heat dissipation fan (3) installed inside the heat dissipation housing (2), characterized in that: A plurality of circular channels (4) equidistantly distributed along the circumferential direction are provided on the circumferential wall surface of the heat dissipation housing (2); a filter mechanism (5) is provided in the circular channel (4); the filter mechanism (5) comprises a turning shaft (51) and four annular frames (52); the four annular frames (52) are equidistantly provided on the outside of the turning shaft (51) along the axial direction of the turning shaft (51); and a turning drive mechanism (6) for driving the turning shaft (51) in each filter mechanism (5) to turn 90° around its own axis is also provided on the heat dissipation housing (2); Among the four annular frames (52), two of the annular frames (52) that are arranged opposite to each other and symmetrically are respectively detachably mounted with a first filter screen (521) and a second filter screen (522), the mesh aperture of the first filter screen (521) being larger than the mesh aperture of the second filter screen (522), and the adjacently arranged first filter screen (521) and the second filter screen (522) being perpendicular to each other in space; The flip drive mechanism (6) includes a drive shaft (61), a first bevel gear (62), a second bevel gear (63), a gear (64), a limit frame (65) and a rack (66). The drive shaft (61) is rotatably arranged at the center of the heat dissipation housing (2). The axis of the drive shaft (61) is collinear with the heat dissipation housing. One end of the drive shaft (61) extends to the interior of the heat dissipation housing, and the other end of the drive shaft (61) extends to the outside of the heat dissipation housing (2). The first bevel gear (62) is coaxially arranged at one end of the drive shaft (61) close to the outside of the heat dissipation housing (2). The flip shaft (51) in each filter mechanism (5) faces the first bevel gear (62). The axis of the flip shaft (51) is perpendicular to the axis of the first bevel gear (62). The second bevel gear (63) is coaxially arranged to the end of the drive shaft (61) close to the outside of the heat dissipation housing (2). ) is the same as the number of the filter mechanism (5), and the second bevel gear (63) is coaxially arranged at one end of the flip shaft (51) close to the first bevel gear (62), the second bevel gear (63) is meshed with the first bevel gear (62), the gear (64) is coaxially arranged at one end of the drive shaft (61) close to the inside of the heat dissipation housing (2), the limit frame (65) is arranged on the inner wall of the heat dissipation housing (2), the end of the drive shaft (61) away from the first bevel gear (62) is rotatably connected to the limit frame (65), the rack (66) is arranged on one side of the gear (64) and meshed therewith, and both sides of the limit frame (65) are provided with limit holes for limiting the horizontal movement of the rack (66), and the heat dissipation housing (2) is also provided with a linear drive component for driving the rack (66) to move.

2. An energy-saving motor according to claim 1, characterized in that: A platform (53) for placing the first filter screen (521) and the second filter screen (522) is formed between the annular frame (52) and the turning shaft (51), and the internal contour of the platform (53) matches the shape of the first filter screen (521) and the second filter screen (522).

3. An energy-saving motor according to claim 2, characterized in that: The annular frame (52) and the flip shaft (51) are made of iron, and the edges of the first filter screen (521) and the second filter screen (522) are provided with permanent magnets (5221) that can be magnetically engaged with the platform (53) formed by the annular frame (52) and the flip shaft (51).

4. An energy-saving motor according to claim 3, characterized in that: The edges of the first filter screen (521) and the second filter screen (522) are each provided with a protrusion (5222) for easy disassembly.

5. The energy-saving motor according to claim 1, characterized in that: A sealing strip (523) capable of tightly fitting with the inner wall of the circular channel (4) is provided on the outer wall of the annular frame (52).

6. The energy-saving motor according to claim 1, characterized in that: The linear drive component includes an electromagnet (67), which is mounted on the outer wall of the heat dissipation housing (2). The working end of the electromagnet (67) passes through the side wall of the heat dissipation housing (2) and is transmission-connected to one end of the rack (66).

7. The energy-saving motor according to claim 6, characterized in that: A dustproof shell (68) capable of covering the first bevel gear (62) and the second bevel gear (63) is provided on the outside of the heat dissipation housing (2), and a flip shaft (51) in each filter mechanism (5) is rotatably passed through the dustproof shell (68) and extends toward the inside thereof.

8. The energy-saving motor according to claim 1, characterized in that: The outside of the heat dissipation housing (2) is further provided with an anti-touch cover (7), a plurality of ventilation cutouts (71) are provided on the anti-touch cover (7), and the anti-touch cover (7) is detachably provided on the heat dissipation housing (2) by screws.

9. An industrial fan, characterized in that: The invention comprises an energy-saving motor as described in any one of claims 1 to 8.

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