High-efficiency energy-saving explosion-proof motor

Abstract

The invention, which relates to the technical field of the explosion-proof motor, discloses a high-efficiency energy-saving explosion-proof motor comprising a housing and a motor main body. The motor main body is arranged in the shell, and a motor shaft of the motor main body penetrates through the shell; a rear cover is arranged at the rear end of the shell, and a plurality of heat dissipation holes are formed in the rear cover; a rotating shaft and a spiral blade are arranged in the rear cover; one end of the rotating shaft is coaxially connected with the motor shaft, and the other end of the rotating shaft is rotationally connected to the rear cover; the spiral blade is spirally arranged on the rotating shaft; the spiral blade comprises an inner supporting sheet and a dust collection layer; the inner supporting sheet is of a spiral structure and is spirally arranged on the rotating shaft; the two sides of the inner supporting piece are each covered with a dust collection layer. Wherein the dust collection layer is of a fluff layer structure; the technical effects that noise generated in the motor operation process is effectively reduced, and meanwhile dust entering the motor through the heat dissipation holes is reduced are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof motors, and in particular to a high-efficiency energy-saving explosion-proof motor. Background Art

[0002] With the acceleration of industrial automation and intelligentization, motors, as core components of power systems, are increasingly used in industrial production, energy extraction, chemical manufacturing, and other fields. Explosion-proof motors, particularly in flammable and explosive environments such as the petrochemical industry, mining, and natural gas, have become indispensable due to their exceptional safety features. However, these environments are often characterized by high temperatures, high humidity, and high dust levels, placing higher demands on the motor's heat dissipation, operating efficiency, noise control, and dust resistance. Explosion-proof motors that are energy-efficient, low-noise, and highly reliable are becoming a key development direction for the industry.

[0003] In the prior art, a cooling fan is usually installed at the rear end of the motor, and the cooling fan is driven to rotate by the motor shaft. For example, the Chinese utility model patent with the authorization publication number CN209516802U discloses a cooling motor, in which a casing is provided on the base, a front end cover is provided on the left side of the casing, a front bearing is provided in the front end cover, a rear end cover is provided on the rear side of the casing, a middle bearing is provided on the rear end cover, the upper end of the rotating shaft is provided in the front bearing and the rear bearing, the rotating shaft passes through the interior of the casing, a rotor is provided on the rotating shaft, the rotor is provided in the stator, and the stator is provided on the inner wall of the casing, a plurality of ventilation holes are provided in the rear end cover, a plurality of ventilation pipes are provided on the right side of the rear end cover, the ventilation pipes are located on the right side of the ventilation holes, the ventilation pipes and the ventilation holes are connected to each other, and the fan is located in the rear cover.

[0004] However, during the operation of the above-mentioned motor, the airflow noise and mechanical vibration problems generated by the fan are also more prominent. In the existing technology, simple sound insulation materials or shock-absorbing structures are usually used to reduce noise, but the effect is limited and may increase the size and weight of the motor. On the other hand, when the motor is running in an environment with a lot of dust, dust can easily enter the motor through the heat dissipation holes and accumulate on key components, affecting the heat dissipation effect and aggravating wear, thereby reducing the service life and operating efficiency of the motor. Summary of the Invention

[0005] The present application solves the prominent problems of airflow noise and mechanical vibration generated by the fan during the operation of the motor in the prior art, as well as the technical problem that dust easily enters the interior of the motor through the heat dissipation holes in a dusty environment by providing a high-efficiency, energy-saving and explosion-proof motor; it achieves the technical effect of effectively reducing the noise generated during the operation of the motor and reducing the amount of dust entering the interior of the motor through the heat dissipation holes.

[0006] The present application provides a high-efficiency, energy-saving, explosion-proof motor, comprising a shell and a motor body; the motor body is arranged inside the shell, and the motor shaft of the motor body passes through the shell; a rear cover is provided at the rear end of the shell, and a plurality of heat dissipation holes are opened on the rear cover; a rotating shaft and spiral blades are provided inside the rear cover; one end of the rotating shaft is coaxially connected to the motor shaft, and the other end of the rotating shaft is rotatably connected to the rear cover; the spiral blades are spirally arranged on the rotating shaft; the spiral blades include inner support sheets and dust absorption layers; the inner support sheets are of a spiral structure, and the inner support sheets are spirally arranged on the rotating shaft; both sides of the inner support sheets are respectively covered with a dust absorption layer; wherein, the dust absorption layer is a fluff layer structure.

[0007] Furthermore, the spiral blade is provided with a plurality of through holes.

[0008] Furthermore, a plurality of inner filters are provided on the spiral blade, and the inner filters are located between two adjacent turns of the spiral blade; wherein the inner filters are thermoplastic elastomer filters.

[0009] Furthermore, the mesh size of the plurality of inner filters gradually increases from the end away from the motor shaft to the end close to the motor shaft.

[0010] Furthermore, an adjustment component is provided on the spiral blade, and the adjustment component includes a centrifugal block and a pull rope; a rope groove is coaxially opened on the rotating shaft, and the pull rope is slidably arranged in the rope groove; wherein the material of the inner support plate is spring steel; the end of the inner support plate away from the motor shaft is fixedly connected to the rotating shaft, and the middle position of the inner support plate and the end close to the motor shaft are slidably arranged on the rotating shaft; the end of the pull rope away from the motor shaft is connected to the centrifugal block, and the centrifugal block is located on the side of the spiral blade away from the motor shaft.

[0011] Furthermore, there are multiple adjustment components, and the number of rope grooves is the same as that of adjustment components and corresponds one to one; the multiple rope grooves are evenly arranged in a ring shape on the rotating shaft; the ends of the pull ropes in the multiple adjustment components close to the motor shaft are connected to the corresponding positions on the side of the inner support plate close to the motor shaft.

[0012] Furthermore, an outer filter is provided on the rotating shaft, and the outer filter has a trumpet-shaped structure; one end opening of the outer filter is sleeved on the end of the rotating shaft away from the motor shaft, and the other end opening of the outer filter is connected to multiple centrifugal blocks; wherein, the outer filter is a thermoplastic elastomer filter.

[0013] Furthermore, the outer filter screen includes a plurality of filter discs, and the number of the filter discs is the same as the number of the centrifugal blocks; the filter disc is fan-shaped, and the filter disc is connected to two adjacent centrifugal blocks on both sides of one side close to the motor shaft.

[0014] Furthermore, a plurality of magnetic strips are evenly arranged on each filter disc, and the length direction of the magnetic strips is the same as the axial direction of the rotating shaft.

[0015] Furthermore, the material of the rotating shaft is ferromagnetic metal.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0017] The motor shaft of the motor body extends out from the rear end of the shell, and a heat dissipation hole is provided on the rear cover and corresponds to the vent on the shell to form an air flow channel; a rotating shaft and a spiral blade are provided inside the rear cover, one end of the rotating shaft is coaxially connected to the motor shaft, and the other end is rotatably connected to the rear cover through a bearing; the spiral blade is spirally arranged on the rotating shaft, and its spiral direction is consistent with the rotation direction of the motor shaft. The spiral blade includes an inner support sheet and a dust-absorbing layer covering both sides thereof. The dust-absorbing layer adopts a fluff structure, which can capture dust and absorb airflow noise; it effectively solves the prominent problems of airflow noise and mechanical vibration generated by the fan during the operation of the motor in the prior art, and the technical problem that dust can easily enter the interior of the motor through the heat dissipation holes in a dusty environment; thereby achieving the technical effect of effectively reducing the noise generated during the operation of the motor and reducing the dust from entering the interior of the motor through the heat dissipation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the rear cover of the high-efficiency, energy-saving, explosion-proof motor of the present invention;

[0019] Figure 2 This is an overall schematic diagram of the high-efficiency, energy-saving, explosion-proof motor of the present invention;

[0020] Figure 3 This is a schematic diagram of the position of the rotating shaft of the high-efficiency, energy-saving, explosion-proof motor of the present invention;

[0021] Figure 4 This is a schematic diagram of the appearance of the spiral blades of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0022] Figure 5 This is a schematic diagram of the spiral blade structure of the high-efficiency, energy-saving, explosion-proof motor of the present invention;

[0023] Figure 6 This is a schematic diagram of the positions of the adjustment components of the high-efficiency, energy-saving, explosion-proof motor of the present invention;

[0024] Figure 7 This is a schematic diagram of the through hole of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0025] Figure 8 This is a schematic diagram of the position of the centrifugal block of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0026] Figure 9 This is a schematic diagram of the spiral blade retracted state of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0027] Figure 10This is a schematic diagram of the distribution of multiple adjustment components of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0028] Figure 11 This is a schematic diagram of the position of the inner filter of the high-efficiency energy-saving explosion-proof motor of the present invention;

[0029] Figure 12 This is a schematic diagram of the external filter of the high-efficiency energy-saving explosion-proof motor of the present invention in an expanded state;

[0030] Figure 13 This is a schematic diagram of the outer filter structure of the high-efficiency, energy-saving, explosion-proof motor of the present invention.

[0031] In the figure: 10, housing; 11, base; 12, rear cover; 20, motor body; 21, motor shaft; 30, rotating shaft; 31, rope groove; 40, spiral blade; 41, inner support plate; 42, dust collection layer; 43, through hole; 50, adjustment component; 51, centrifugal block; 52, pull rope; 60, inner filter; 70, outer filter; 71, filter disc; 72, magnetic strip. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0033] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0035] Example 1: Figures 1 to 5 As shown, the high-efficiency energy-saving explosion-proof motor of the present application includes a housing 10 and a motor body 20 .

[0036] The motor body 20 is disposed inside the housing 10 , and a motor shaft 21 of the motor body 20 passes through the housing 10 .

[0037] A rear cover 12 is provided at the rear end of the housing 10 , and a plurality of heat dissipation holes are formed on the rear cover 12 .

[0038] It should be noted that the heat dissipation holes are located on the side of the rear cover 12 away from the motor shaft 21, and the aperture and number of the heat dissipation holes are selected according to actual needs and will not be described in detail here.

[0039] It should be noted that the housing 10 may be provided with ventilation holes corresponding to the heat dissipation holes.

[0040] A base 11 is provided at the bottom of the housing 10 .

[0041] It should be noted that the motor body 20 is of shaft-extending design, with the motor shaft 21 extending from the rear end. For details, please refer to the motor in a dustproof mechanism for a motor disclosed in Chinese invention patent authorization announcement number CN110504784B.

[0042] A rotating shaft 30 and a spiral blade 40 are provided inside the rear cover 12 .

[0043] One end of the rotating shaft 30 is coaxially connected to the motor shaft 21 , and the other end of the rotating shaft 30 is rotatably connected to the rear cover 12 .

[0044] The rotating shaft 30 may be rotatably connected to the rear cover 12 via a bearing.

[0045] The spiral blade 40 is spirally disposed on the rotating shaft 30 .

[0046] It can be understood that the motor body 20 starts to run after being powered on, the motor shaft 21 drives the rotating shaft 30 to rotate, and the rotating shaft 30 drives the spiral blades 40 to rotate, forming a forced airflow, and a continuous airflow circulation is formed inside the shell 10; the spiral blades 40 can also increase the gas flow path, increase the number of sound reflections, reduce gas turbulence and vibration, and thus reduce operating noise.

[0047] It should be noted that when the motor body 20 is used in a unidirectional rotation scenario, the spiral direction of the spiral blade 40 from the end close to the motor shaft 21 to the end away from the motor shaft 21 is the same as the rotation direction of the motor shaft 21; in addition, when the motor body 20 is used in a bidirectional rotation scenario, if the airflow enters the rear cover 12 from the inside of the shell 10 and is discharged to the outside through the heat dissipation holes, the spiral blade 40 can not only have a noise reduction effect, but also still have a dust removal effect on the gas, so that part of the dust in this part of the gas will not be discharged to the outside and pollute the environment, and this part of the dust will be avoided from being sucked into the inside of the shell 10 again.

[0048] Further, such as Figure 5 As shown, the spiral blade 40 includes an inner support sheet 41 and a dust absorbing layer 42 .

[0049] The inner support piece 41 has a spiral structure and is spirally disposed on the rotating shaft 30 .

[0050] Both sides of the inner support sheet 41 are respectively covered with a dust absorbing layer 42 .

[0051] The dust absorbing layer 42 is a fluff layer structure, and the material of the dust absorbing layer 42 can be carbon fiber.

[0052] It should be noted that the number of spiral turns, spacing and outer radius of the inner support sheet 41 are selected according to actual needs and will not be described in detail here.

[0053] It should be noted that the dust absorbing layer 42 can be set on the inner supporting sheet 41 by Velcro, which makes it convenient to clean or replace the dust absorbing layer 42 later.

[0054] It can be understood that under the guidance of the spiral blades 40, the gas continuously contacts the dust absorption layer 42, and the dust in the gas can be more easily captured by the dust absorption layer 42 under the centrifugal action, and the fluff structure of the dust absorption layer 42 further absorbs the airflow noise, making the motor run quieter.

[0055] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0056] 1. It effectively reduces the noise generated during the operation of the motor and reduces the amount of dust that enters the motor through the heat dissipation holes;

[0057] 2. The arrangement of the rotating shaft 30 and the spiral blades 40 can enhance air flow and further improve heat dissipation efficiency;

[0058] 3. The spiral blades 40 not only enhance heat dissipation but also reduce noise;

[0059] 4. The fluff structure of the dust absorption layer 42 further absorbs airflow noise, making the motor run quieter;

[0060] 5. The centrifugal force generated by the spiral structure makes it easier for dust to be captured by the dust collecting layer 42, thereby improving the dust removal efficiency;

[0061] 6. The noise reduction and dust removal effects reduce the energy loss of the motor body 20 and improve the operating efficiency.

[0062] Example 2: In the above embodiment, if the rotation speed of the motor shaft 21 is faster, so that the gas flow rate in the spiral blade 40 is faster, there may be insufficient contact between the gas and the dust absorption layer 42, resulting in the dust in the gas cannot be effectively captured by the dust absorption layer 42; the embodiment of the present application is optimized based on the above embodiment.

[0063] like Figures 6 to 9 As shown, an adjustment assembly 50 is provided on the spiral blade 40 , and the adjustment assembly 50 includes a centrifugal block 51 and a pull rope 52 .

[0064] A rope groove 31 is coaxially defined on the rotating shaft 30 , and the pull rope 52 is slidably disposed in the rope groove 31 .

[0065] The inner support sheet 41 is made of spring steel.

[0066] It should be noted that the elastic coefficient of the inner support sheet 41 is selected according to actual needs and will not be described in detail here.

[0067] One end of the inner support piece 41 away from the motor shaft 21 is fixedly connected to the rotating shaft 30 , and the middle position of the inner support piece 41 and one end close to the motor shaft 21 are slidably arranged on the rotating shaft 30 .

[0068] One end of the pull rope 52 away from the motor shaft 21 is connected to the centrifugal block 51 , and the centrifugal block 51 is located on a side of the spiral blade 40 away from the motor shaft 21 .

[0069] It should be noted that the centrifugal block 51 abuts against the spiral blade 40 , and the centrifugal block 51 is located outside the rope groove 31 .

[0070] One end of the pull rope 52 close to the motor shaft 21 is connected to one side of the inner support piece 41 close to the motor shaft 21 .

[0071] The pull rope 52 may be made of metal, such as stainless steel.

[0072] It should be noted that the volume and mass of the centrifugal block 51 are selected according to actual needs and will not be described in detail here.

[0073] Further, such as Figure 7 and Figure 8 As shown, a plurality of through holes 43 are formed on the spiral blade 40 .

[0074] It should be noted that the aperture, number and distribution of the through holes 43 are selected according to actual needs and will not be described in detail here.

[0075] It can be understood that when the speed of the motor shaft 21 is high, the gas flow rate between the spiral blades 40 is high, the centrifugal force of the centrifugal block 51 is large, the distance between the centrifugal block 51 and the rotating shaft 30 is large, the spiral spacing of the inner support sheet 41 becomes smaller under the pull of the pull rope 52, and the spiral blade 40 contracts. Under the premise of ensuring the gas flow rate, the contact area between the airflow and the dust collection layer 42 increases when passing through the spiral blade 40, and the contact time is prolonged; when the speed of the motor shaft 21 is low, the gas flow rate between the spiral blades 40 is low, the centrifugal force of the centrifugal block 51 is small, and the distance between the centrifugal block 51 and the rotating shaft 30 is large. 0 is small, the inner support piece 41 maintains a larger spiral pitch under the action of its own elasticity, and the spiral leaf 40 is unfolded. Under the premise of ensuring the gas flow, the airflow is in full contact with the dust collecting layer 42 when passing through the spiral leaf 40; in addition, the through hole 43 is opened on the spiral leaf 40, which can disperse the airflow and avoid the airflow concentrating through a certain area, thereby promoting the contact between the airflow and the dust collecting layer 42. The through hole 43 enables the airflow to pass through the dust collecting layer 42 more evenly, further improving the dust removal efficiency. At the same time, the setting of the through hole 43 also reduces the pressure on the inner support piece 41.

[0076] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0077] 1. The adjustment component 50 can automatically adjust the spiral pitch of the spiral blade 40 according to the rotation speed of the motor shaft 21, ensuring that the dust collection layer 42 is fully in contact with the gas at different rotation speeds, thereby improving the dust removal efficiency;

[0078] 2. After the spiral blades 40 are contracted, the contact area and contact time between the dust collecting layer 42 and the gas increase, and the dust capturing efficiency is significantly improved;

[0079] 3. The spiral blades 40 contract and expand smoothly, reducing airflow turbulence and mechanical vibration, and further reducing operating noise.

[0080] Example 3: In the above embodiment, when the pull rope 52 in the adjustment component 50 pulls the spiral leaf 40, it may be impossible to pull the spiral leaf 40 smoothly or the spiral leaf 40 may be subjected to uneven force and the deformation process may be uncontrolled; the embodiment of the present application is optimized based on the above embodiment.

[0081] like Figure 10 、 Figure 11 and Figure 12 As shown, there are multiple adjustment components 50 , and the rope grooves 31 are the same in number as the adjustment components 50 and correspond one to one.

[0082] The plurality of rope grooves 31 are evenly arranged on the rotating shaft 30 in an annular shape.

[0083] It should be noted that the multiple adjustment components 50 can be 3, 4, 5, 6 adjustment components 50, etc. The specific number is selected according to actual needs and will not be detailed here.

[0084] Specifically, one end of the pull rope 52 in the plurality of adjustment components 50 close to the motor shaft 21 is connected to a corresponding position of the inner support piece 41 on one side close to the motor shaft 21 .

[0085] It is understandable that by restricting the spiral leaf 40 through multiple adjustment components 50, the scaling process of the spiral leaf 40 becomes easier and smoother, the force applied to the spiral leaf 40 becomes more uniform, and the contraction process of the spiral leaf 40 becomes more controllable.

[0086] Further, such as Figure 11 As shown, a plurality of inner filters 60 are provided on the spiral blade 40 , and the inner filters 60 are located between two adjacent circles of the spiral blade 40 .

[0087] The inner filter 60 may be a thermoplastic elastomer filter.

[0088] It should be noted that the multiple inner filters 60 can be 3, 4, 5, 6 inner filters 60, etc. The specific number, mesh size and position distribution are selected according to actual needs and will not be described in detail here.

[0089] Preferably, the mesh sizes of the plurality of inner filters 60 gradually increase from an end away from the motor shaft 21 to an end close to the motor shaft 21 .

[0090] Further, such as Figure 12 As shown, an outer filter screen 70 is disposed on the rotating shaft 30 , and the outer filter screen 70 is a trumpet-shaped structure.

[0091] It should be noted that the overall shape of the outer filter 70 is a hollow truncated cone with two open ends, and the opening of the end of the outer filter 70 close to the motor shaft 21 is larger than the opening of the end away from the motor shaft 21.

[0092] One end opening of the outer filter screen 70 is sleeved on an end of the rotating shaft 30 away from the motor shaft 21 , and the other end opening of the outer filter screen 70 is connected to the plurality of centrifugal blocks 51 .

[0093] The outer filter 70 may be a thermoplastic elastomer filter.

[0094] It should be noted that the size and mesh size of the outer filter 70 are selected according to actual needs and will not be described in detail here.

[0095] It should be noted that when the centrifugal blocks 51 abut against the rotating shaft 30 , the outer filter screen 70 is folded together; when the centrifugal blocks 51 are thrown out under the centrifugal action, the outer filter screen 70 is unfolded under the drive of the multiple centrifugal blocks 51 .

[0096] It can be understood that the inner filter 60 is located between two adjacent circles of the spiral blade 40 to form a graded filtering structure; the mesh size of the inner filter 60 gradually increases from the end away from the motor shaft 21 to the end close to the motor shaft 21, and can filter dust particles of different sizes step by step; the thermoplastic elastomer filter has good elasticity and filtering performance, and can effectively capture dust; as the centrifugal block 51 moves away from the rotating shaft 30, the outer filter 70 unfolds, so that the greater the speed of the motor shaft 21, the greater the gas flow rate, the greater the degree of expansion of the outer filter 70, and the larger the filtering coverage area of ​​the outer filter 70; the smaller the speed of the motor shaft 21, the smaller the gas flow rate, the smaller the degree of expansion of the outer filter 70, and the smaller the filtering coverage area of ​​the outer filter 70, which can further ensure that when the gas flow rate is too fast, the dust removal efficiency is improved, and when the gas flow rate is too slow, the damping effect on the gas is reduced.

[0097] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0098] 1. The graded filtration of the inner filter 60 can capture dust particles of different sizes step by step, improving the dust removal efficiency;

[0099] 2. The expansion and folding mechanism of the outer filter 70 can automatically adjust the filter area according to the rotation speed, further optimizing the heat dissipation and dust removal effects.

[0100] Embodiment 4: In the above embodiment, when the outer filter 70 is folded on the rotating shaft 30, the outer filter 70 cannot be folded neatly and may be entangled and knotted; the embodiment of the present application is optimized based on the above embodiment.

[0101] like Figure 12 As shown, the outer filter screen 70 includes a plurality of filter discs 71 , and the number of the filter discs 71 is the same as the number of the centrifugal blocks 51 .

[0102] The filter disc 71 is fan-shaped, and two sides of one side of the filter disc 71 close to the motor shaft 21 are respectively connected to two adjacent centrifugal blocks 51 .

[0103] It should be noted that adjacent positions of two adjacent filter discs 71 on one side close to the motor shaft 21 are connected to the same centrifugal block 51 .

[0104] Further, such as Figure 13 As shown, a plurality of magnetic strips 72 are evenly arranged on each filter 71 , and the length direction of the magnetic strips 72 is the same as the axial direction of the rotating shaft 30 .

[0105] It should be noted that the plurality of magnetic strips 72 may be 2, 3, 4, 5, 6 magnetic strips 72, etc. The specific number is selected according to actual needs and will not be described in detail here.

[0106] It should be noted that the magnetic strip 72 is made of a magnet, such as a neodymium magnet; the specific size and magnetic strength of the magnetic strip 72 are selected according to actual needs and will not be described in detail here.

[0107] Preferably, the material of the rotating shaft 30 may be ferromagnetic metal, such as iron.

[0108] It can be understood that each sector filter 71 is connected to two adjacent centrifugal blocks 51 on both sides of one side close to the motor shaft 21. When the centrifugal blocks 51 move outward under the action of centrifugal force, the filter 71 is unfolded; when the centrifugal blocks 51 are retracted, the filter 71 is also folded. A plurality of magnetic strips 72 are evenly arranged on each filter 71. The magnetic strips 72 are made of magnetic material such as neodymium magnets. When the outer filter screen 70 is folded, magnetic attraction is generated between the magnetic strips 72, so that the filter 71 is neatly arranged to avoid entanglement and collision. Conclusion; when the outer filter 70 is unfolded, the magnetic strips 72 will drive the filter 71 to unfold under the action of centrifugation, and as the magnetic strips 72 move away from each other, the magnetic attraction between the magnetic strips 72 will also weaken, making the filter 71 unfold more smoothly and thoroughly, and less affected by airflow resistance; in addition, when the material of the rotating shaft 30 is ferromagnetic metal, when the outer filter 70 is folded, a magnetic attraction is generated between the magnetic strips 72, and multiple magnetic strips 72 can be magnetically attracted to the rotating shaft 30, preventing the filter 71 from shaking too violently after being subjected to external force.

[0109] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0110] 1. The magnetic attraction of the magnetic strip 72 ensures that the filter discs 71 can be neatly arranged when folded, thus avoiding the entanglement and knotting that may occur when the outer filter screen 70 is folded;

[0111] 2. By providing the magnetic strip 72, the unfolding process of the outer filter 70 is made more stable and reliable, reducing the possibility of mechanical failure;

[0112] 3. Reduces friction and damage to the filter disc 71 during folding, thereby extending the service life of the outer filter screen 70;

[0113] 4. When running at low speed, the outer filter 70 can be neatly folded under the magnetic force of the magnetic strip 72, reducing airflow resistance; when running at high speed, the outer filter 70 can be quickly unfolded under the action of the centrifugal block 51 and the magnetic strip 72, improving filtration efficiency;

[0114] 5. By preventing the filter disc 71 from being entangled and knotted, the shaking of the filter disc 71 is reduced, the mechanical vibration and friction noise are reduced, and the operating noise of the motor is further reduced.

[0115] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-efficiency, energy-saving, explosion-proof motor, characterized in that: including a housing and a motor body; The motor body is arranged inside the housing, and the motor shaft of the motor body passes through the housing; The rear end of the housing is provided with a rear cover, which is provided with a plurality of heat dissipation holes; A rotating shaft and spiral blades are provided inside the rear cover; One end of the rotating shaft is coaxially connected to the motor shaft, and the other end of the rotating shaft is rotatably connected to the rear cover; The spiral blade is spirally arranged on the rotating shaft; The spiral blade includes an inner support sheet and a dust absorbing layer; The inner support piece is a spiral structure, and the inner support piece is spirally arranged on the rotating shaft; Both sides of the inner support sheet are respectively covered with a dust absorbing layer; Wherein, the dust-absorbing layer is a fluff layer structure.

2. The high-efficiency, energy-saving, explosion-proof motor according to claim 1, characterized in that: A plurality of through holes are formed on the spiral blade.

3. The high-efficiency, energy-saving, explosion-proof motor according to claim 1, characterized in that: The spiral blade is provided with a plurality of inner filters, and the inner filters are located between two adjacent turns of the spiral blade; Among them, the inner filter is a thermoplastic elastomer filter.

4. The high-efficiency, energy-saving, explosion-proof motor according to claim 3, characterized in that: The mesh sizes of the multiple inner filters gradually increase from the end away from the motor shaft to the end close to the motor shaft.

5. The high-efficiency, energy-saving, explosion-proof motor according to claim 1, characterized in that: The spiral blade is provided with an adjustment component, which includes a centrifugal block and a pull rope; A rope groove is coaxially provided on the rotating shaft, and the pull rope is slidably arranged in the rope groove; Wherein, the material of the inner support sheet is spring steel; The end of the inner support piece away from the motor shaft is fixedly connected to the rotating shaft, and the middle position of the inner support piece and the end close to the motor shaft are slidably arranged on the rotating shaft; One end of the pull rope away from the motor shaft is connected to the centrifugal block, and the centrifugal block is located on the side of the spiral blade away from the motor shaft.

6. The high-efficiency, energy-saving, explosion-proof motor according to claim 5, characterized in that: There are multiple adjustment components, and the rope grooves are the same in number and correspond one to one with the adjustment components; The plurality of rope grooves are evenly arranged on the rotating shaft in an annular shape; One end of the pull rope in the plurality of adjustment components close to the motor shaft is connected to a corresponding position of the inner support piece on one side close to the motor shaft.

7. The high-efficiency, energy-saving, explosion-proof motor according to claim 6, characterized in that: An outer filter is provided on the rotating shaft, and the outer filter is in a trumpet-shaped structure; One end opening of the outer filter is sleeved on the end of the rotating shaft away from the motor shaft, and the other end opening of the outer filter is connected to a plurality of centrifugal blocks; Among them, the outer filter is a thermoplastic elastomer filter.

8. The high-efficiency, energy-saving, explosion-proof motor according to claim 7, characterized in that: The outer filter screen includes a plurality of filter discs, and the number of filter discs is the same as the number of centrifugal blocks; The filter disc is in a fan shape, and two sides of one side of the filter disc close to the motor shaft are respectively connected to two adjacent centrifugal blocks.

9. The high-efficiency, energy-saving, explosion-proof motor according to claim 8, characterized in that: A plurality of magnetic strips are evenly arranged on each filter plate, and the length direction of the magnetic strips is consistent with the axial direction of the rotating shaft.

10. The high-efficiency, energy-saving, explosion-proof motor according to any one of claims 1 to 9, characterized in that: The material of the rotating shaft is ferromagnetic metal.

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