Pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control function

Abstract

The invention discloses a pole-changing multi-speed three-phase asynchronous motor with a dust-free temperature control function, and relates to the field of pole-changing multi-speed three-phase asynchronous motors. The pole-changing multi-speed three-phase asynchronous motor comprises a motor body, a plurality of heat dissipation copper plates are arranged on the outer surface of the motor body at equal intervals in the circumferential direction, a sealing cylinder is arranged on the motor body, and a conical partition plate is arranged in the sealing cylinder; and the interior of the sealing cylinder is divided into two independent cavities by the partition plate. Through driving of the output shaft of the motor main body, the functions of efficient dust removal, heat dissipation and automatic reset are achieved, the scraping frame collects dust on the filter plate into the discharging groove, and secondary diffusion is prevented; the turbine rotates to generate negative pressure, air flow is promoted, heat is taken away, and effective cooling is achieved; the vibration design enhances the dust removal effect; when operation is stopped, all the parts automatically reset under the action of the springs, structural stability is guaranteed, equipment operation efficiency is improved, the service life is prolonged, operation is convenient, and environment friendliness and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the field of pole-changing multi-speed three-phase asynchronous motors, and in particular to a pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control. Background Art

[0002] The variable-pole multi-speed three-phase asynchronous motor is a motor that adjusts the number of motor poles by changing the connection method of the stator winding to achieve a variety of speed outputs. This type of motor is widely used in industrial production, household appliances, and various scenarios that require flexible speed regulation.

[0003] During actual operation, the motor will inevitably generate a lot of heat, which is usually dissipated and controlled by the heat dissipation copper sheet surrounding the outside. When used in a dusty environment, the traditional heat dissipation copper sheet easily absorbs and accumulates a lot of dust. This dust will not only block the heat dissipation channel and reduce the heat dissipation efficiency, but may also cause the motor temperature to be too high, thus affecting its normal operation or even causing failure. To ensure the heat dissipation effect, maintenance personnel need to regularly clean the dust on the surface of the copper sheet.

[0004] However, this process is time-consuming and labor-intensive, which brings great inconvenience to daily maintenance work and increases the maintenance cost of equipment. In addition, the temperature control system of traditional motors is often relatively simple, and it is difficult to adjust the temperature in real time according to the actual working conditions, resulting in poor operating stability of the motor under high load or extreme environment. Especially in some occasions with high requirements for environmental cleanliness (such as food processing, pharmaceutical manufacturing, etc.), the dust generated during the operation of the motor may have a serious impact on product quality and even cause the product to be scrapped. Summary of the invention

[0005] In order to overcome the shortcomings of traditional heat dissipation copper sheets that are easy to absorb and accumulate dust and inconvenient to maintain, the present invention provides a variable-pole multi-speed three-phase asynchronous motor with dust-free temperature control.

[0006] A variable-pole multi-speed three-phase asynchronous motor with dust-free temperature control comprises a motor body, a plurality of heat-dissipating copper plates are arranged at equal intervals along the circumferential direction on the outer surface of the motor body, a sealing cylinder is arranged on the motor body, a conical partition is arranged inside the sealing cylinder, and the partition divides the interior of the sealing cylinder into two independent cavities, a filter plate is fixedly connected to the entrance of the left cavity of the sealing cylinder, the output shaft of the motor body passes through the filter plate, and a turbine is arranged in the left cavity, the output shaft of the motor body is fixedly connected to a scraper through a coupling, and the scraper contacts the outer side of the filter plate, and a sealing assembly is arranged at the outlet of the right cavity of the sealing cylinder.

[0007] In one embodiment, a discharge groove is provided in the scraper frame.

[0008] In one embodiment, the sealing assembly includes a sealing frame slidably connected to the outlet of the right cavity of the sealing cylinder. Symmetrically distributed first springs are connected between the sealing frame and the sealing cylinder, and the symmetrically distributed first springs are all wound around the sealing frame.

[0009] In one embodiment, a fixing column is fixedly connected to one side of the turbine close to the filter plate, and the inner side of the filter plate is fixedly connected to symmetrically distributed U-shaped rubber plates, which penetrate through the sealing cylinder.

[0010] In one embodiment, an elastic telescopic push plate is threadedly connected to the output shaft of the motor body. Return springs are connected between the symmetrically distributed telescopic parts and the fixed parts. A toothed ring is fixedly connected to the inner wall of the sealing cylinder on the side close to the elastic telescopic push plate, and its inner teeth are inclined in the counterclockwise direction. The telescopic part of the elastic telescopic push plate is stuck into the teeth of the toothed ring. A block is slidably connected to the output shaft of the motor body, and a second spring is connected between the block and the output shaft of the motor body.

[0011] In one embodiment, an annular plate is fixedly connected to the outside of the sealing cylinder on the side close to the scraping frame, and an annular inclined surface is provided thereon. The scraping frame rotates along the annular inclined surface.

[0012] In one embodiment, a baffle is provided on the outside of the sealing cylinder on the side close to the annular plate, and an annular groove for discharging dust is formed between the baffle and the annular plate.

[0013] In one embodiment, symmetrically distributed magnets are fixedly connected to the sealing cylinder on the side close to the sealing frame, and symmetrically distributed magnetic blocks are fixedly connected to the sealing frame, and the magnetic blocks are magnetically coupled with the adjacent magnets.

[0014] The present invention has the following advantages: Driven by the output shaft of the motor body, the present invention realizes the functions of efficient dust removal, heat dissipation and automatic reset. The scraping frame collects the dust on the filter plate into the discharge groove to prevent secondary diffusion; the turbine rotates to generate negative pressure, promotes air flow and takes away heat, effectively reducing the temperature; the vibration design enhances the dust removal effect; when the operation stops, each component automatically resets under the action of the spring, ensuring the structural stability, improving the operation efficiency of the equipment, prolonging the service life, being convenient to operate and environmentally friendly and reliable.

[0015] The present invention realizes the automatic switching of the functions of sealing, exhaust and reset through the mutual cooperation of magnets, magnetic blocks and first springs, ensuring good sealing performance and internal cleanliness of the equipment in both the running and static states, and improving the overall performance and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the separation of components such as the motor body, the sealing cylinder and the turbine of the present invention.

[0018] Figure 3 This is a three-dimensional structural sectional view of components such as the scraping frame, sealing frame, and first spring of the present invention.

[0019] Figure 4 This is a three-dimensional structural sectional view of the sealing cylinder of the present invention.

[0020] Figure 5 This is a three-dimensional structural sectional view of components such as the filter plate, fixing column, and rubber plate of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of components such as the motor main body, sealing cylinder, and turbine of the present invention.

[0022] Figure 7 This is a three-dimensional structural sectional view of components such as the elastic telescopic push plate, clamping block, and second spring of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of components such as the sealing cylinder, scraping frame, and annular plate of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of components such as the sealing frame, magnet, and magnetic block of the present invention.

[0025] Names and serial numbers of components in the figure: 1. Motor main body, 101. Heat dissipation copper plate, 2. Sealing cylinder, 3. Turbine, 4. Filter plate, 5. Scraping frame, 501. Discharge groove, 6. Sealing frame, 7. First spring, 8. Fixing column, 9. Rubber plate, 10. Elastic telescopic push plate, 11. Clamping block, 12. Second spring, 121. Clutch gear ring, 13. Annular plate, 131. Annular groove, 14. Magnet, 15. Magnetic block. Detailed implementation mode

[0026] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

[0027] Embodiment 1: A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control, as Figures 1-4As shown in the figure, it includes a motor main body 1. A number of heat dissipation copper plates 101 are arranged at equal intervals along the circumferential direction on its outer surface to enhance the heat dissipation effect. By optimizing the air flow path and cooperating with the internal air guiding system, it ensures that the heat generated during the operation of the motor main body 1 can be quickly dissipated to the external environment, thereby realizing the efficient heat dissipation function and improving the overall performance and service life of the motor main body 1; A sealing cylinder 2 is provided on the motor main body 1. A conical partition is arranged inside it. The partition divides the inside of the sealing cylinder 2 into two independent cavities. The large cavity on the right is used to place the motor main body 1 and provide sufficient heat dissipation space. The small cavity on the left is used to assemble components to ensure a compact structure and easy maintenance. A number of arc-shaped through holes are opened on the conical partition for air intake and guiding the air flow direction, optimizing the internal air flow circulation and realizing the air flow guiding function.

[0028] A filter plate 4 is fixedly connected at the entrance of the left cavity of the sealing cylinder 2 to filter the air entering the inside of the sealing cylinder 2 and prevent dust from entering, thereby realizing the dust-proof filtering function; The output shaft of the motor main body 1 passes through the filter plate 4, and a turbine 3 is arranged in the left cavity; The output shaft of the motor main body 1 is fixedly connected with a scraping frame 5 through a coupling, which contacts the outer side of the filter plate 4 and is used to remove the dust on the filter plate 4; A sealing component is arranged at the outlet of the right cavity of the sealing cylinder 2; A discharge groove 501 is opened in the scraping frame 5 to collect the scraped dust centrally and avoid secondary diffusion of the dust, further improving the dust-free performance.

[0029] As Figure 3 shown, the sealing component includes a sealing frame 6 slidably connected to the outlet of the right cavity of the sealing cylinder 2. Symmetrically distributed first springs 7 are connected between it and the sealing cylinder 2. The outer side of the sealing frame 6 is in close contact with the inner side of the sealing cylinder 2 to form an effective sealing barrier. The symmetrically distributed first springs 7 are all wound around the sealing frame 6 to provide elastic support and ensure a stable and reliable sealing effect.

[0030] As Figure 5 shown, a fixing column 8 is fixedly connected to the side of the turbine 3 close to the filter plate 4. The inner side of the filter plate 4 is fixedly connected to symmetrically distributed U-shaped rubber plates 9, which pass through the sealing cylinder 2.

[0031] As Figure 6 and Figure 7 shown, external threads are opened on the output shaft of the motor main body 1, and an elastic telescopic push plate 10 is threadedly connected. Return springs (not shown inside) are connected between the symmetrically distributed telescopic parts and the fixed parts of the elastic telescopic push plate 10, and their function is to provide an automatic reset function. A toothed ring 121 is fixedly connected to the inner wall of the sealing cylinder 2 on the side close to the elastic telescopic push plate 10. Its internal teeth are inclined in the counterclockwise direction. The telescopic part of the elastic telescopic push plate 10 is stuck into the teeth of the toothed ring 121, thereby realizing the one-way transmission locking function.

[0032] When the motor body 1 rotates forward, the telescopic part of the elastic telescopic push plate 10 is caught in the teeth of the toothed ring 121, forming a reliable mechanical lock to ensure the transmission efficiency. When the motor body 1 rotates in reverse, the inclined internal tooth design allows the telescopic part of the elastic telescopic push plate 10 to retract, realizing the unlocking function, thus meeting the requirements under specific working conditions; A block 11 is slidably connected inside the output shaft of the motor body 1, and a second spring 12 is connected between it and the output shaft of the motor body 1. Through the block 11, the flexible clamping and matching function between the turbine 3 and the motor body 1 can be realized, ensuring that the turbine 3 can delay rotation.

[0033] As Figure 8 shown, on the outer side of the sealing cylinder 2, close to one side of the scraping frame 5, an annular plate 13 is fixedly connected, which is provided with an annular inclined surface. The scraping frame 5 rotates along this annular inclined surface, thus realizing the guiding and stabilizing functions, ensuring that the scraping frame 5 always maintains a stable movement track during operation, and avoiding deviation or jamming phenomena; On the outer side of the sealing cylinder 2, close to one side of the annular plate 13, a baffle is provided, and an annular groove 131 for dust discharge is formed between it and the annular plate 13, realizing the dust discharge function, effectively preventing dust accumulation, and prolonging the service life of the equipment.

[0034] When the output shaft of the motor body 1 rotates clockwise, the scraping frame 5 rotates accordingly, scraping off the dust attached to the filter plate 4 and collecting it centrally into the discharge trough 501, avoiding secondary dust diffusion. During this process, the elastic telescopic push plate 10 and the toothed ring 121 interact with each other. Due to the teeth of the toothed ring 121 being inclined in the counterclockwise direction, the elastic telescopic push plate 10 does not rotate synchronously with the output shaft, but moves rightward along the axis, and drives the block 11 to move synchronously, thereby locking the turbine 3. At this time, the turbine 3 rotates together with the motor body 1, and the second spring 12 deforms.

[0035] When the turbine 3 rotates, the fixed column 8 on it rotates accordingly. When the rotating fixed column 8 contacts the rubber plate 9, the rubber plate 9 deforms; When the two are separated, it returns to its original state under the action of the elastic force of the rubber plate 9 itself. As the fixed column 8 continuously contacts and separates from the rubber plate 9, the rubber plate 9 generates vibrations, causing the filter plate 4 to vibrate accordingly, thereby shaking off the attached dust. These shaken-off dusts are collected by the scraping frame 5 into the discharge trough 501.

[0036] When the turbine 3 rotates, a negative pressure is formed in the left cavity of the sealing cylinder 2, and external air enters the left cavity of the sealing cylinder 2 through the filter plate 4 and flows into the right cavity through the arc-shaped through holes on the conical partition. As the air pressure in the right cavity gradually increases, the sealing frame 6 is pushed open and moves to the right, separating from the right side wall of the sealing cylinder 2 to form an exhaust window, and the first spring 7 deforms. The external air flow is discharged through the exhaust window between the sealing cylinder 2 and the sealing frame 6, and at the same time takes away the heat on the heat dissipation copper plate 101, realizing the cooling of the motor body 1.

[0037] As the motor main body 1 continues to operate, the dust collected in the discharge chute 501 within the scraping frame 5 will gradually increase and finally be discharged through the annular groove 131. The staff can place a collection box below the annular groove 131 in advance. Since the annular groove 131 is located on the right side of the entrance of the sealing cylinder 2, the discharged dust directly falls into the collection box, effectively preventing the dust from re-entering the interior of the sealing cylinder 2.

[0038] When the motor main body 1 stops rotating, the scraping frame 5 and the turbine 3 also stop rotating. Under the elastic force of the second spring 12, the locking block 11 drives the elastic telescopic push plate 10 to move leftward to reset. The elastic telescopic push plate 10 first moves leftward into the teeth of the ratchet ring 121, and while rotating in the reverse direction and moving leftward to reset, the teeth of the ratchet ring 121 abut against the telescopic part of the elastic telescopic push plate 10. During the rotation process, its telescopic part continuously contracts and extends, and the internal return spring continuously deforms and resets.

[0039] At the same time, since the turbine 3 no longer rotates, no negative pressure is generated within the sealing cylinder 2. Under the elastic force of the first spring 7, the sealing frame 6 moves leftward to reset. In summary, through the drive of the output shaft of the motor main body 1, the functions of efficient dust removal, heat dissipation, and automatic reset are realized. The scraping frame 5 collects the dust on the filter plate 4 into the discharge chute 501 to prevent secondary diffusion; the rotation of the turbine 3 generates negative pressure, promotes air flow and takes away heat, effectively reducing the temperature; the vibration design enhances the dust removal effect; when the operation stops, each component automatically resets under the action of the spring, ensuring the structural stability, improving the operation efficiency of the equipment, extending the service life, being convenient to operate, and environmentally friendly and reliable.

[0040] Example 2: As Figure 1 and Figure 9 shown, on one side of the sealing cylinder 2 close to the sealing frame 6, symmetrically distributed magnets 14 are fixedly connected, and on the sealing frame 6, symmetrically distributed magnetic blocks 15 are fixedly connected, and each of them is magnetically attracted and matched with the adjacent magnet 14, thereby realizing the magnetic attraction and fixing function.

[0041] In the initial state, the magnet 14 and the magnetic block 15 are tightly attracted under the action of magnetic force, so that the sealing frame 6 and the sealing cylinder 2 are kept in close contact, effectively preventing external dust from entering the interior of the sealing cylinder 2 through the gap between the two. As described above, when the turbine 3 rotates with the motor main body 1, negative pressure is generated within the sealing cylinder 2. As the internal air pressure gradually increases, the sealing frame 6 is pushed open and moves rightward, driving the magnetic block 15 to move rightward synchronously, separating the magnetic block 15 from the magnet 14. At the same time, the air within the sealing cylinder 2 is discharged through the exhaust window.

[0042] When the seal frame 6 drives the magnetic block 15 to move leftward to reset, under the action of magnetic force, the magnet 14 re-attracts the magnetic block 15, causing the seal frame 6 to return to its initial position, sealing the exhaust window and preventing external dust from entering the sealing cylinder 2 when the motor main body 1 is not running, thereby ensuring the cleanliness of the heat dissipation copper plate 101. In summary, through the cooperation of the magnet 14, the magnetic block 15, and the first spring 7, the automatic switching of the sealing, exhaust, and reset functions is achieved, ensuring that the device can maintain good sealing performance and internal cleanliness in both the running and stationary states, improving the overall performance and service life.

[0043] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control, comprising a motor main body (1), and a plurality of heat dissipation copper plates (101) are arranged at equal intervals along the circumference of its outer surface, and the characteristics are as follows: A sealing cylinder (2) is provided on the motor main body (1). A conical partition is provided inside it, which divides the inside of the sealing cylinder (2) into two independent cavities. A filter plate (4) is fixedly connected to the entrance of the left cavity of the sealing cylinder (2). The output shaft of the motor main body (1) passes through the filter plate (4), and a turbine (3) is provided in the left cavity. The output shaft of the motor main body (1) is fixedly connected with a scraping frame (5) through a coupling, which is in contact with the outer side of the filter plate (4). A sealing component is provided at the outlet of the right cavity of the sealing cylinder (2).

2. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 1, characterized in that: A discharge groove (501) is formed in the scraping frame (5).

3. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 2, characterized in that: The sealing component includes a sealing frame (6) slidably connected to the outlet of the right cavity of the sealing cylinder (2). Symmetrically distributed first springs (7) are connected between it and the sealing cylinder (2), and the symmetrically distributed first springs (7) are all wound around the sealing frame (6).

4. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 3, characterized in that: A fixing column (8) is fixedly connected to the side of the turbine (3) close to the filter plate (4). The inner side of the filter plate (4) is fixedly connected with symmetrically distributed U-shaped rubber plates (9), which pass through the sealing cylinder (2).

5. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 4, characterized in that: An elastic telescopic push plate (10) is threadedly connected to the output shaft of the motor main body (1). Return springs are connected between the symmetrically distributed telescopic parts and the fixed parts. A toothed ring (121) is fixedly connected to the inner wall of the sealing cylinder (2) on the side close to the elastic telescopic push plate (10), and its internal teeth are inclined in the counterclockwise direction. The telescopic part of the elastic telescopic push plate (10) is stuck into the teeth of the toothed ring (121). A clamping block (11) is slidably connected to the output shaft of the motor main body (1), and a second spring (12) is connected between it and the output shaft of the motor main body (1).

6. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 5, characterized in that: An annular plate (13) is fixedly connected to the outer side of the sealing cylinder (2) on the side close to the scraping frame (5). An annular inclined surface is provided on it, and the scraping frame (5) rotates along the annular inclined surface.

7. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 6, characterized in that: A baffle is provided on the outer side of the sealing cylinder (2) on the side close to the annular plate (13), and an annular groove (131) for discharging dust is formed between it and the annular plate (13).

8. A pole-changing multi-speed three-phase asynchronous motor with dust-free temperature control according to claim 7, characterized in that: Symmetrically distributed magnets (14) are fixedly connected to the side of the sealing cylinder (2) close to the sealing frame (6). Symmetrically distributed magnetic blocks (15) are fixedly connected to the sealing frame (6), and they are all magnetically attracted to the adjacent magnets (14).

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