Round rotary vibration sieve driven by superconducting motor and use method of round rotary vibration sieve

Abstract

The invention relates to the technical field of vibrating screens, and discloses a circular rotary vibrating screen driven by a superconducting motor and a using method.The circular rotary vibrating screen driven by the superconducting motor comprises a supporting base and a protective shell, a stirring assembly and a displacement assembly are arranged in the protective shell, and the displacement assembly is arranged below the stirring assembly; the stirring assembly comprises a rotating ring, four circumferentially arranged stirring plates are hinged between the inner walls of the rotating ring, two symmetrical torsional springs are arranged between the stirring plates and the rotating ring, first sliding grooves are formed in the upper portions of the front faces of the stirring plates, and first push plates are slidably connected into the first sliding grooves; under the action of a distance sensor, the distance between a first push plate and the distance sensor can be detected in real time, accumulated materials at the moment can be reflected according to the distance, corresponding adjustment is carried out according to different accumulation degrees, and when a first threshold value is reached, the materials are shunted to be screened through a first screen and a second gathering ring at the same time; and the screening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vibrating screens, and in particular to a circular rotary vibrating screen driven by a superconducting motor and a use method thereof. Background Art

[0002] The rotary vibrating screen is a high-precision fine powder screening machine with low noise, high efficiency, and quick screen change in 3 to 5 minutes. It has a fully enclosed structure and is suitable for screening and filtering of materials such as particles, powders, and mucus. The rotary vibrating screen uses the relative movement of bulk materials and the screen surface to allow some particles to pass through the screen holes, and classify materials such as sand, gravel, and crushed stone into different grades according to particle size.

[0003] The disclosure discloses a simple vibration screen for removing impurities from peony seeds, which is disclosed in publication number CN106238320A. The screen comprises a frame, a base, a circular screen body, an upper circular screen, a lower circular screen, a left-right driving device for driving the circular screen body to swing left and right, and a front-back driving device for driving the circular screen body to swing back and forth. The base is sleeved on the outside of the circular screen body, the circular screen body is hinged to the base, the base is hinged to the frame, the upper circular screen is installed at the bottom of the circular screen body, a discharge port is provided on the lower circular screen, the lower circular screen is located below the upper circular screen and is obliquely installed on the frame, so that the peony seeds falling on the upper part thereof can automatically roll out from the discharge port under the action of their own gravity, a rotating motor is installed above the circular screen body through a bracket, a plurality of arc-shaped blades are installed on the rotating shaft of the rotating motor, the arc-shaped blades are located in the inner cavity of the circular screen body, and the bottom surface of the arc-shaped blades is 8 mm away from the top surface of the upper circular screen.

[0004] A rotary vibrating screening machine with publication number CN104353608A includes a cylindrical screen box, and the screening machine also includes: a rotating mechanism, which includes a rotating shaft and a driving mechanism for driving the rotating shaft to rotate, the rotating shaft is rotatably arranged on an elastic bracket, and the screen box is sleeved and fixed on the rotating shaft; a vibration mechanism for driving the elastic bracket to vibrate; a multi-stage screening mechanism, including a multi-stage screening group that is inclined from top to bottom, and the multi-stage screening group is fixedly arranged between the screen box and the rotating shaft; the diameter of the screen holes in the multi-stage screening group gradually decreases from top to bottom; discharge ports corresponding to the screened material and the screened material are respectively provided at the downwardly inclined ends of each stage of the screening group; the upper end of the screen box is provided with a feed port for evenly distributing the material on the upper end surface of the screening group at the highest position.

[0005] Based on the above scheme, when the rotary vibrating screen is actually used, the material on the surface of the rotary vibrating screen gradually increases. At this time, the gravity of the rotary vibrating screen is relatively large, and the swing amplitude will gradually decrease, and the material on the surface of the vibrating screen cannot vibrate, thereby affecting the screening efficiency. At the same time, when the material is swinging, most of the material will gather to the center, causing the material to pile up together, thereby affecting the overall screening efficiency. Summary of the invention

[0006] The object of the present invention is to provide a circular rotary vibrating screen driven by a superconducting motor and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a circular rotary vibrating screen driven by a superconducting motor, comprising a support seat and a protective shell, wherein a stirring assembly and a displacement assembly are respectively arranged inside the protective shell, and the displacement assembly is arranged below the stirring assembly; The stirring assembly includes a rotating ring, four stirring plates arranged in a circle are hinged between the inner walls of the rotating ring, two symmetrical torsion springs are arranged between the stirring plates and the rotating ring, a first slide groove is provided on the upper part of the front face of the stirring plate, a first push plate is slidably connected inside the first slide groove, a distance sensor is provided on the rear wall of the first slide groove, a second slide groove is provided on the inner bottom wall of the first slide groove, a second push plate is slidably connected inside the second slide groove, a group of springs arranged at equal distances are provided between the upper surface of the second push plate and the inner top wall of the first slide groove, a push plate is provided on the lower part of the front face of the stirring plate, and the front face of the push plate is inclined.

[0008] Preferably, the displacement assembly includes a connecting shaft, the upper end of the connecting shaft is fixedly connected to the bottom surface of the rotating ring, the outer surface of the connecting shaft is respectively sleeved with a first electromagnet and a first screen, the outer surface of the first electromagnet is provided with a positioning iron ring, the upper surface of the positioning iron ring is fixedly connected to the bottom surface of the first screen, and the lower end of the connecting shaft is provided with a second electromagnet, and the first electromagnet and the second electromagnet have the same magnetic properties.

[0009] Preferably, four discharge grooves arranged in a circle are provided at the edge of the upper surface of the first screen, two symmetrical toggle columns are provided at the edge of the bottom surface of the first screen, and a first gathering ring is provided at the upper part of the inner wall of the protective shell, and the bottom surface of the first gathering ring is in contact with the upper surface of the first screen.

[0010] Preferably, a second gathering ring and a second screen are respectively provided at the lower part of the inner wall of the protective shell, the second gathering ring is funnel-shaped, a plurality of through holes are opened on the upper surface of the second gathering ring, the size of each through hole is consistent with the aperture size of the first screen, and a group of circumferentially arranged toggle blocks are provided on the upper surface of the second gathering ring, and the upper surface of each toggle block is arc-shaped.

[0011] Preferably, the protective shell comprises an upper screen box, a lower screen box and a screen cover, a second connecting ring is provided between the upper screen box and the lower screen box, and a first connecting ring is provided between the lower screen box and the screen cover.

[0012] Preferably, the upper surface of the sieve cover is connected to a feed hopper, a servo motor is provided at the axis center of the inner top wall of the sieve cover, and the output shaft of the servo motor is fixedly connected to the upper surface of the rotating ring.

[0013] Preferably, a group of springs arranged in a circle are provided between the lower screen box and the support seat, a containing box is provided at the lower part of the inner wall of the lower screen box, a superconducting motor and an exciter are respectively provided inside the containing box, the output end of the superconducting motor and the input end of the exciter are fixedly connected, and the lower end of the lower screen box is connected to a discharge hopper.

[0014] The present invention also provides a method for using a circular rotary vibrating screen driven by a superconducting motor, and the specific operation steps are as follows: S1. First, start the whole body to make it vibrate, so as to increase the overall screening effect, and then operate the stirring component to drive the displacement component and the first push plate to rotate respectively; S2. Next, the material is placed on the surface of the first screen and the material is continuously smoothed by the first push plate to prevent the material from piling up and affecting the screening efficiency. S3, then the distance sensor is used to detect the distance between the first push plate and the distance sensor. When the first threshold is reached, the position of the first screen is adjusted to open the discharge slot, so that the excess unscreened materials can be discharged and re-screened through the second gathering ring and the through hole below, so as to avoid excessive materials affecting the screening efficiency; S4. When the distance sensor detects that the distance from the first push plate to the distance sensor reaches the second threshold, the position of the first screen is adjusted again so that the positioning iron ring is adsorbed on the surface of the second electromagnet, thereby driving the first screen to rotate. The toggle block and the toggle column make the first screen vibrate while rotating, thereby increasing its screening efficiency again.

[0015] Technical effects of the present invention: 1. The present invention drives the entire protective shell to work through a superconducting motor. High-temperature superconductors are welded on the upper and lower sides of the rotor, which improves the electromagnetic conversion efficiency. The superconducting motor is smaller in size than the transmission motor, which improves the space utilization rate. The upper screen box, the lower screen box and the screen cover can be spliced ​​together through the cooperation of the first connecting ring and the second connecting ring. When the internal parts are damaged, they can be freely disassembled, making it more convenient to repair.

[0016] 2. The present invention uses the cooperation between the rotating ring and the servo motor to enable the stirring plate to push the material accumulated on the surface of the first screen to move, so that the material continuously moves on the surface of the first screen and fully contacts the first screen to avoid accumulation, thereby improving the screening efficiency of the material. Through the cooperation between the second gathering ring and the through hole, the material can be further effectively screened.

[0017] 3. The present invention can rotate the first screen through the cooperation of the servo motor, the second electromagnet and the positioning iron ring, so that the toggle column and the toggle block are in continuous contact, the first screen can continuously reciprocate up and down, and the material on the surface of the first screen can move violently, thereby increasing the screening efficiency again. Through the cooperation of the first push plate, the second push plate and the stirring plate, the position of the first screen can be freely adjusted to open the discharge chute.

[0018] 4. Under the action of the distance sensor, the present invention can detect the distance between the first push plate and the distance sensor in real time, reflect the accumulated materials at this time according to the distance, and make corresponding adjustments according to different accumulation degrees. When the first threshold is reached, the material is diverted to pass through the first screen and the second gathering ring for screening at the same time, thereby improving the screening efficiency. When the second threshold is reached, the first screen is rotated, and through the mutual cooperation of the toggle column and the toggle block, the first screen is made to reciprocate up and down while rotating, further improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the second aggregation ring structure of the present invention; Figure 4 This is a schematic diagram of the first screen structure of the present invention; Figure 5 This is a schematic diagram of the structure of the rotating ring of the present invention; Figure 6 This is a schematic diagram of the structure of the stirring plate of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the rotating ring of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the stirring plate of the present invention.

[0020] In the figure: 1. support seat; 2. protective shell; 201. upper screen box; 202. lower screen box; 203. screen cover; 204. second connecting ring; 205. first connecting ring; 3. stirring assembly; 301. rotating ring; 302. stirring plate; 303. first slide groove; 304. first push plate; 305. second slide groove; 306. second push plate; 307. push plate; 4. displacement assembly; 401. connecting shaft; 402. first electromagnet; 403. first screen; 404. positioning iron ring; 405. second electromagnet; 5. discharge trough; 6. toggle column; 7. first gathering ring; 8. second gathering ring; 9. second screen; 10. through hole; 11. toggle block; 12. feed hopper; 13. servo motor; 14. containing box; 15. superconducting motor; 16. discharge hopper. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0022] The present invention provides Figures 1 to 8 A circular vibrating screen driven by a superconducting motor is shown, comprising a support seat 1 and a protective shell 2, the protective shell 2 comprising an upper screen box 201, a lower screen box 202 and a screen cover 203, a second connecting ring 204 is provided between the upper screen box 201 and the lower screen box 202, a first connecting ring 205 is provided between the lower screen box 202 and the screen cover 203, the upper screen box 201, the lower screen box 202 and the screen cover 203 can be spliced ​​together by the first connecting ring 205 and the second connecting ring 204, when the internal parts are damaged, they can be freely disassembled, making it more convenient to repair, and the residual material on the surface of the first screen 403 and the second screen 9 can also be cleaned by disassembly, a group of springs arranged in a circle are provided between the lower screen box 202 and the support seat 1, the lower screen box 202 and the support seat 1 are elastically connected, when the superconducting motor 15 vibrates through the exciter, the protective shell 2 can vibrate freely, avoiding The protection-free shell 2 and the support seat 1 are fixedly connected. When vibration occurs, the connection breaks, which leads to damage and overflow of internal materials from the cracks, causing waste. A containing box 14 is provided at the lower part of the inner wall of the lower screen box 202. A superconducting motor 15 and an exciter are provided inside the containing box 14 respectively. A high-temperature superconductor is installed on the rotor of the superconducting motor 15. When the stator winding is energized to generate an alternating magnetic field, the high-temperature superconductor of the rotor generates eddy currents and thus generates a strong magnetic field, which drives the rotor to rotate. Since the resistivity of the high-temperature superconductor is extremely low and approaches zero, the electromagnetic conversion efficiency is greatly improved and the heat generated by the winding is reduced. Under the same power, the high-temperature superconducting motor is more energy-efficient. The output end of the superconducting motor 15 and the input end of the exciter are fixedly connected. The lower end of the lower screen box 202 is connected to a discharge hopper 16. The discharge hopper 16 can collect the screened materials to make it more convenient to bag them.

[0023] The interior of the protective shell 2 is respectively provided with a stirring component 3 and a displacement component 4. When the stirring component 3 rotates, the material on the surface of the first screen 403 can be smoothed to make it more evenly distributed, so that accumulation occurs in the subsequent screening process. The displacement component 4 is arranged below the stirring component 3. The displacement component 4 can adjust the magnetic force between the first electromagnet 402 and the second electromagnet 405, so that the first screen 403 is lowered until the positioning iron ring 404 is adsorbed on the surface of the second electromagnet 405, so that the first screen 403 can rotate with the stirring component 3; The stirring assembly 3 includes a rotating ring 301. The upper surface of the screen cover 203 is connected to the feed hopper 12. A servo motor 13 is provided at the axis center of the inner top wall of the screen cover 203. The output shaft of the servo motor 13 is fixedly connected to the upper surface of the rotating ring 301. When the servo motor 13 is started, it can drive the rotating ring 301 to rotate, thereby achieving the purpose of power transmission. Four stirring plates 302 arranged in a circle are hinged between the inner walls of the rotating ring 301. Two symmetrical torsion springs are provided between the stirring plates 302 and the rotating ring 301. When the material accumulated on the surface of the stirring plates 302 gradually increases, under the action of gravity, the stirring plates 302 are tilted along the hinges to a certain extent, so that the material is continuously pushed to the rotating ring 301 during the pushing process. The outer side pushes to avoid excessive accumulation of materials in the middle of the first sieve 403, which affects the screening efficiency. A first slide groove 303 is opened on the upper part of the front side of the stirring plate 302. The first slide groove 303 is internally slidably connected with the first push plate 304. The rear wall of the first slide groove 303 is provided with a distance sensor. The distance sensor can detect the distance between the first push plate 304 and the distance sensor in real time. The farther the distance is, the smaller the extrusion force on the first push plate 304 is, and the less residual materials are collected at the corresponding first push plate 304. The closer the distance is, the greater the extrusion force on the first push plate 304 is, and the more residual materials are collected at the corresponding first push plate 304, which means that the screening efficiency is worse at this time, resulting in excessive material accumulation.

[0024] The inner bottom wall of the first slide groove 303 is provided with a second slide groove 305, and the second push plate 306 is slidably connected inside the second slide groove 305. A group of springs arranged at equal distances are provided between the upper surface of the second push plate 306 and the inner top wall of the first slide groove 303. When the first push plate 304 is forced to contract toward the inside of the first slide groove 303, the internal air is squeezed to make the second push plate 306 gradually extend outward, and at the same time, the spring is stretched to generate a restoring elastic force. A push plate 307 is provided at the lower part of the front side of the stirring plate 302, and the front side of the push plate 307 is an inclined surface. Under the action of the inclined surface, the material can move upward when pushing the material, so that it contacts the first push plate 304. At the same time, when the material increases, the material can directly spread over the stirring plate 302 to avoid excessive material accumulation at the stirring plate 302.

[0025] The displacement assembly 4 includes a connecting shaft 401, the upper end of the connecting shaft 401 is fixedly connected to the bottom surface of the rotating ring 301, the outer surface of the connecting shaft 401 is respectively sleeved with a first electromagnet 402 and a first screen 403, the first screen 403 is in close contact with the first gathering ring 7 under the magnetic repulsion force to avoid the first screen 403 from rotating when the connecting shaft 401 rotates, and the outer surface of the first electromagnet 402 is provided with a positioning iron ring 404, when the positioning iron ring 404 descends and contacts with the second electromagnet 405, the two are adsorbed together to form a new whole, so that the connecting shaft 401 can drive the first screen 403 to rotate when rotating, and the upper surface of the positioning iron ring 404 The surface is fixedly connected to the bottom surface of the first screen 403, and the second electromagnet 405 is provided at the lower end of the connecting shaft 401. The first electromagnet 402 and the second electromagnet 405 have the same magnetic properties. When the first electromagnet 402 and the second electromagnet 405 are energized, a magnetic repulsion force is generated between the two, pushing the first electromagnet 402 to gradually move upward, so that the first electromagnet 402 drives the first screen 403 to be in close contact with the first gathering ring 7. When the upper first electromagnet 402 is automatically powered off, its own magnetism disappears, and under the action of gravity, the positioning iron ring 404 quickly drops and is adsorbed together with the second electromagnet 405, so that the two form a new whole, so that the two can move synchronously.

[0026] Four circumferentially arranged discharge grooves 5 are provided at the edge of the upper surface of the first screen 403. When a gap appears between the first screen 403 and the first gathering ring 7, the discharge groove 5 can be opened to effectively discharge the excess unscreened material, thereby avoiding excessive accumulation of materials affecting the screening efficiency. Two symmetrical toggle posts 6 are provided at the edge of the bottom surface of the first screen 403. When the toggle posts 6 rotate with the first screen 403 and contact the toggle block 11, an impact can be generated to cause a certain vibration, thereby further improving the screening efficiency through vibration. When the toggle posts 6 pass over the toggle block 11 under the action of the rotating force, the first screen 403 can move upward as a whole, thereby causing the first screen 403 to continuously reciprocate up and down, causing the material on the surface of the first screen 403 to move violently, thereby increasing its screening efficiency again. A first gathering ring 7 is provided at the upper part of the inner wall of the protective shell 2. The bottom surface of the first gathering ring 7 contacts the upper surface of the first screen 403, and the friction coefficient between the two is large, thereby avoiding the first screen 403 from rotating when the stirring component 3 rotates.

[0027] A second gathering ring 8 and a second screen 9 are respectively provided at the lower part of the inner wall of the protective shell 2. The second gathering ring 8 is funnel-shaped and can gather the materials discharged from the discharge trough 5 again. A plurality of through holes 10 are provided on the upper surface of the second gathering ring 8. The size of each through hole 10 is consistent with the aperture size of the first screen 403. Through the cooperation between the through holes 10 and the second gathering ring 8, the materials discharged from the discharge trough 5 can be re-screened, thereby adopting a diversion screening method to reduce the material that needs to be screened by the first screen 403, so that the screening can be completed quickly. A group of toggle blocks 11 arranged in a circle are provided on the upper surface of the second gathering ring 8, and the upper surface of each toggle block 11 is arc-shaped to avoid jamming when the toggle column 6 hits and breaks the toggle block 11.

[0028] In actual use, the material is first put into the protective shell through the feed hopper 12, and then the superconducting motor 15 and the servo motor 13 are started respectively. Under the interaction between the superconducting motor 15 and the exciter, the protective shell 2 is shaken as a whole, thereby improving the overall screening efficiency. Under the action of the output shaft of the servo motor 13, the rotating ring 301 is driven to rotate. Under the action of the rotating ring 301, the stirring plate 302 is driven to perform a circular motion, pushing the material accumulated on the surface of the first screen 403 to move, so that the material continuously moves on the surface of the first screen 403 and fully contacts the first screen 403 to avoid accumulation, thereby improving the screening efficiency of the material.

[0029] When the distance sensor detection value reaches the first threshold value, the amount of accumulated material on the surface of the first push plate 304 increases. Under the action of extrusion, the first push plate 304 shrinks toward the inside of the first chute 303, and the air inside the first chute 303 is squeezed to spread toward the inside of the second chute 305. Under the action of air pressure, the second push plate 306 gradually extends outward, and at the same time, the spring is stretched to generate a resetting elastic force. Under the action of the four second push plates 306, the first screen 403 is pushed to gradually move downward, so that a gap appears between the first screen 403 and the first gathering ring 7, and the discharge chute 5 is opened. At the same time, when the stirring plate 302 is squeezed, the stirring plate 302 can be tilted along the hinge to a certain extent, so that during the pushing process, the material is continuously pushed outward, and the material is discharged through the discharge chute 5 and transported to the surface of the second gathering ring 8. Under the action of the through hole 10, the material discharged from the discharge chute 5 can be re-screened, thereby adopting a diversion screening method to reduce the material that needs to be screened by the first screen 403, so that it can quickly complete the screening and avoid excessive accumulation of materials.

[0030] When the distance sensor detection value reaches the second threshold value, the accumulated material on the surface of the first push plate 304 increases again, the first electromagnet 402 is powered off, so that the magnetic repulsion between the first electromagnet 402 and the second electromagnet 405 disappears, and under the action of gravity, the first screen 403 drives the positioning iron ring 404 to drop rapidly, so that the positioning iron ring 404 and the second electromagnet 405 are adsorbed together, so that the two form a new whole, so that the two can move synchronously, and under the action of the connecting shaft 401, the second electromagnet 405 can drive the first screen 403 The toggle column 6 rotates to drive the toggle column 6 to perform circular motion. When the toggle column 6 rotates and contacts the toggle block 11, it can produce an impact to cause it to vibrate to a certain extent, thereby further improving the screening efficiency. When the toggle column 6 passes over the toggle block 11 under the action of the rotating force, the first screen 403 can move upward as a whole, so that the first screen 403 continuously reciprocates up and down, and the material on the surface of the first screen 403 moves violently, thereby increasing the screening efficiency again. Finally, the screened materials will be discharged from the discharge hopper 16 through the second screen 9 in turn.

[0031] When the distance sensor detects that the distance between the first push plate 304 and the distance sensor reaches the second threshold, the position of the first screen 403 is adjusted again, so that the positioning iron ring 404 is adsorbed on the surface of the second electromagnet 405, thereby driving the first screen 403 to rotate, and the toggle block 11 and the toggle column 6 make the first screen 403 vibrate while rotating, so that its screening efficiency is increased again. Example

[0032] The present invention also provides a method for using a circular rotary vibrating screen driven by a superconducting motor, and the specific operation steps are as follows: S1. First, start the whole body to make the whole body vibrate to increase the overall screening effect, and then operate the stirring component 3 to drive the displacement component 4 and the first push plate 304 to rotate respectively.

[0033] S2. Next, the material is placed on the surface of the first screen 403, and the material is continuously smoothed by the first push plate 304 to prevent the material from piling up and affecting the screening efficiency.

[0034] S3. Then, the distance sensor is used to detect the distance between the first push plate 304 and the distance sensor. When the first threshold is reached, the discharge chute 5 is opened by adjusting the position of the first screen 403, so that the excess unscreened material can be discharged and re-screened through the second gathering ring 8 and the through hole 10 below to avoid excessive material affecting the screening efficiency.

[0035] S4. When the distance sensor detects that the distance between the first push plate 304 and the distance sensor reaches the second threshold, the position of the first screen 403 is adjusted again, so that the positioning iron ring 404 is adsorbed on the surface of the second electromagnet 405, thereby driving the first screen 403 to rotate, and the toggle block 11 and the toggle column 6 make the first screen 403 vibrate while rotating, thereby increasing its screening efficiency again.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circular vibrating screen driven by a superconducting motor, comprising a support base (1) and a protective shell (2), characterized in that: A stirring assembly (3) and a displacement assembly (4) are respectively provided inside the protective shell (2), and the displacement assembly (4) is arranged below the stirring assembly (3); The stirring assembly (3) comprises a rotating ring (301), four stirring plates (302) arranged in a circle are hinged between the inner walls of the rotating ring (301), two symmetrical torsion springs are arranged between the stirring plates (302) and the rotating ring (301), a first slide groove (303) is provided at the upper part of the front face of the stirring plate (302), a first push plate (304) is slidably connected inside the first slide groove (303), a distance sensor is provided at the rear wall of the first slide groove (303), a second slide groove (305) is provided at the inner bottom wall of the first slide groove (303), a second push plate (306) is slidably connected inside the second slide groove (305), a group of springs arranged at equal distances are provided between the upper surface of the second push plate (306) and the inner top wall of the first slide groove (303), a push plate (307) is provided at the lower part of the front face of the stirring plate (302), and the front face of the push plate (307) is inclined.

2. The circular vibrating screen driven by a superconducting motor according to claim 1, characterized in that: The displacement assembly (4) comprises a connecting shaft (401), the upper end of the connecting shaft (401) being fixedly connected to the bottom surface of the rotating ring (301), the outer surface of the connecting shaft (401) being respectively sleeved with a first electromagnet (402) and a first screen (403), the outer surface of the first electromagnet (402) being provided with a positioning iron ring (404), the upper surface of the positioning iron ring (404) being fixedly connected to the bottom surface of the first screen (403), and the lower end of the connecting shaft (401) being provided with a second electromagnet (405), the first electromagnet (402) and the second electromagnet (405) having the same magnetic properties.

3. The circular vibrating screen driven by a superconducting motor according to claim 2, characterized in that: Four circumferentially arranged discharge grooves (5) are provided at the edge of the upper surface of the first screen (403), two symmetrical toggle columns (6) are provided at the edge of the bottom surface of the first screen (403), and a first gathering ring (7) is provided at the upper part of the inner wall of the protective shell (2), the bottom surface of the first gathering ring (7) being in contact with the upper surface of the first screen (403).

4. The circular vibrating screen driven by a superconducting motor according to claim 3, characterized in that: A second gathering ring (8) and a second screen (9) are respectively provided at the lower part of the inner wall of the protective shell (2); the second gathering ring (8) is funnel-shaped; a plurality of through holes (10) are provided on the upper surface of the second gathering ring (8); the size of each through hole (10) is consistent with the aperture size of the first screen (403); a group of circumferentially arranged toggle blocks (11) are provided on the upper surface of the second gathering ring (8); and the upper surface of each toggle block (11) is arc-shaped.

5. The circular vibrating screen driven by a superconducting motor according to claim 1, characterized in that: The protective shell (2) comprises an upper screen box (201), a lower screen box (202) and a screen cover (203); a second connecting ring (204) is provided between the upper screen box (201) and the lower screen box (202); and a first connecting ring (205) is provided between the lower screen box (202) and the screen cover (203).

6. The circular vibrating screen driven by a superconducting motor according to claim 5, characterized in that: The upper surface of the sieve cover (203) is connected to a feed hopper (12), a servo motor (13) is provided at the axis center of the inner top wall of the sieve cover (203), and an output shaft of the servo motor (13) is fixedly connected to the upper surface of the rotating ring (301).

7. The circular vibrating screen driven by a superconducting motor according to claim 5, characterized in that: A group of springs arranged in a circle are provided between the lower screen box (202) and the support seat (1); a receiving box (14) is provided at the lower part of the inner wall of the lower screen box (202); a superconducting motor (15) and an exciter are provided inside the receiving box (14); an output end of the superconducting motor (15) and an input end of the exciter are fixedly connected; and a discharge hopper (16) is connected to the lower end of the lower screen box (202).

8. A method for using a circular vibrating screen driven by a superconducting motor as claimed in claim 4, characterized in that: The steps include: S1, first start the whole body to make the whole body vibrate, so as to increase the overall screening effect, and then make the stirring component (3) operate, so as to drive the displacement component (4) and the first push plate (304) to rotate respectively; S2, next, placing the material onto the surface of the first screen (403), and continuously smoothing the material through the first push plate (304) to prevent the material from piling up and affecting the screening efficiency; S3, then detecting the distance between the first push plate (304) and the distance sensor through a distance sensor, and when a first threshold is reached, the position of the first screen (403) is adjusted to open the discharge chute (5), so that excess unscreened material can be discharged and rescreened through the second gathering ring (8) and the through hole (10) below, thereby preventing excessive material from affecting the screening efficiency; S4. When the distance sensor detects that the distance between the first push plate (304) and the distance sensor reaches a second threshold value, the position of the first screen (403) is adjusted again, so that the positioning iron ring (404) is adsorbed on the surface of the second electromagnet (405), thereby driving the first screen (403) to rotate, and the first screen (403) is vibrated while rotating by the toggle column (6), thereby increasing the screening efficiency again.

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