Scrap automobile non-ferrous metal sorting and recycling equipment

Abstract

The application provides a kind of scrap car non-ferrous metal sorting and recycling equipment, including rack, feed hopper, magnetic separation mechanism, guide mechanism, vortex mechanism and control unit, magnetic separation mechanism, guide mechanism and vortex mechanism are sequentially arranged on the rack, vortex mechanism includes support, drive roller, guide roller, conveying belt, eccentric roller, magnetic block, material collecting hopper one and material collecting hopper two, conveying belt forms a top horizontal ring conveying belt through drive roller and guide roller, eccentric roller is rotationally arranged in drive roller, material collecting hopper one and material collecting hopper two are sequentially arranged on one side of eccentric roller, guide mechanism includes lifting plate, electric push rod, metal detector, multiple upper electromagnetic coils and moving magnetic field generating mechanism.The application sets guide mechanism, material particles complete preliminary orientation before reaching vortex mechanism, so as to be stably thrown in vortex mechanism, avoid special-shaped particle trajectory divergence, cause wrong sorting, improve sorting purity and recovery rate.

Description

Technical Field

[0001] This invention relates to the field of metal sorting and recycling technology, and in particular to a non-ferrous metal sorting and recycling device for scrapped automobiles. Background Technology

[0002] End-of-life vehicles contain various non-ferrous metals such as copper, aluminum, lead, and zinc. Efficient recycling of these metals not only reduces reliance on primary mineral resources but also significantly lowers energy consumption and environmental pollution, resulting in substantial economic and environmental benefits. Current recycling processes typically involve dismantling and crushing end-of-life vehicles into granular mixtures, then passing them through magnetic separators to remove ferromagnetic metals, followed by eddy current separators to separate non-ferrous metals from non-metallic materials.

[0003] However, scrapped vehicles inevitably contain a large number of particles formed from broken copper, aluminum, and other wires and wire bundles. These particles often have complex shapes, such as being long, thin, curved, or even curled into clumps. In conventional eddy current separation processes, the direction and magnitude of the eddy current repulsive force are highly sensitive to the shape of the material. The Lorentz force experienced by irregularly shaped particles in different parts of the magnetic field is inconsistent in direction, resulting in extremely divergent and uncertain ejection trajectories. This leads to the incorrect sorting of non-ferrous metal particles, seriously affecting the sorting purity and recovery rate. Summary of the Invention

[0004] In view of this, the present invention proposes a non-ferrous metal sorting and recycling device for scrapped automobiles, which is equipped with a guiding mechanism. The moving magnetic field generating mechanism moves synchronously with the conveyor belt and the guiding coil, so that the material to be sorted generates eddies and completes orientation under the action of the magnetic field, so as to achieve a uniform orientation of the particles. The particles are pre-oriented before reaching the eddy current mechanism, so as to obtain a stable throwing trajectory under the action of the Lorentz magnetic force generated by the eddy current mechanism.

[0005] The technical solution of this invention is implemented as follows:

[0006] A non-ferrous metal sorting and recycling device for scrapped automobiles includes a frame, a feeding hopper, a magnetic separation mechanism, an eddy current mechanism, a guiding mechanism, and a control unit. The feeding hopper is located at the top of the frame, and a guide trough for conveying the material to be sorted to the magnetic separation mechanism is provided below it. The magnetic separation mechanism, the guiding mechanism, and the eddy current mechanism are arranged sequentially along the material conveying direction. The eddy current mechanism includes a support, a drive roller, a guide roller, a conveyor belt, an eccentric roller, magnetic blocks, a first collection hopper, and a second collection hopper. The support is fixed on the frame and located on the discharge side of the magnetic separation mechanism. The drive roller and the guide roller are mounted on the support. The conveyor belt is wound around the drive roller and the guide roller to form a horizontal annular conveying surface. The drive roller is located at the end of the horizontal conveying surface away from the magnetic separation mechanism. The eccentric roller is rotatably disposed inside the drive roller, and its outer circumferential surface is tangent to the inner circumferential surface of the drive roller. Multiple magnetic blocks are arranged in a circumferential array along the eccentric roller, with their S poles and N poles alternating sequentially. The first collection hopper and the second collection hopper are arranged sequentially along the material discharge direction. Located below the eccentric roller; the guiding mechanism includes a lifting plate, an electric push rod, a metal detector, multiple upper electromagnetic coils, and a moving magnetic field generating mechanism. The electric push rod is positioned opposite to the top of the frame, and its telescopic end is connected to the lifting plate. The lifting plate is horizontally positioned above the conveyor belt. The metal detector and multiple upper electromagnetic coils are installed at the bottom of the lifting plate, and the multiple upper electromagnetic coils are arranged at intervals along the conveying direction. The moving magnetic field generating mechanism includes a housing, a slide rail, multiple stator coils, a slider, and a magnetic field generator. The housing is fixed to the bracket and located below the conveyor belt. The slide rail is arranged inside the housing along the conveying direction. The multiple stator coils are arranged sequentially along the slide rail. The slider is slidably connected to the slide rail. The magnetic field generator is fixedly installed on the top of the slider. The conveyor belt receives the material discharged from the magnetic separation mechanism and conveys it towards the collection hopper. The control unit is located on the frame and is electrically connected to the magnetic separation mechanism, the drive roller, the metal detector, the upper electromagnetic coils, the stator coils, and the magnetic field generator.

[0007] Preferably, the magnetic separation mechanism includes a support plate, a magnetic roller, a vertical plate, a horizontal plate, a tension spring, and a scraper. The support plate is mounted on the frame, the magnetic roller is rotatably mounted on the support plate and located below the guide groove, the vertical plate is mounted on the bottom surface of the support plate, the horizontal plate is mounted on the side of the vertical plate, one end of the scraper abuts against the lower circumferential surface of the magnetic roller, and the other end is hinged to the vertical plate, and one end of the tension spring is connected to the scraper, and the other end is connected to the horizontal plate.

[0008] Preferably, the magnetic separation mechanism further includes a recycling box and a collection hopper three. The recycling box is mounted on the frame, and the collection hopper three is located on top of the recycling box and directly below the scraper.

[0009] Preferably, the magnetic field generator includes a mover, an excitation coil, a cover plate, and a return spring. The mover has a receiving groove on its top, the excitation coil is disposed in the receiving groove, the cover plate closes the top opening of the receiving groove, and the return spring is disposed on both sides of the mover along the conveying direction, with one end connected to the mover and the other end connected to the inner wall of the housing.

[0010] Preferably, the magnetic field generator further includes a position sensor and a roller. The position sensor is disposed on one side of the bottom of the mover and is used to detect the position of the mover in real time. The roller is rotatably disposed at the bottom of the mover and rolls in cooperation with the slide rail.

[0011] Preferably, the cover plate and the housing are made of non-metallic materials.

[0012] Preferably, it also includes an oil pump, an oil pipe, and multiple oil nozzles. The oil pump is located at the top of the lifting plate, the oil pipe is located above the conveyor belt and extends along its width, one end of the oil pipe is connected to the oil pump, and the other end is closed. The multiple oil nozzles are located at the bottom of the oil pipe and face the surface of the conveyor belt.

[0013] Preferably, it also includes a protective cover, which is disposed on the top of the second hopper and has an opening on its side facing the eccentric roller.

[0014] Preferably, it further includes a visual rejection mechanism, which includes a camera, a swing arm, an air telescopic rod, an air pump, a solenoid valve, and a pressure pipe. The camera is located at the top inside the protective cover. The upper end of the swing arm is rotatably connected to the inner wall of the protective cover. One end of the air telescopic rod is hinged to the protective cover, and the other end is hinged to the side of the swing arm. The swing trajectory of the swing arm covers the opening area of ​​the protective cover. The air pump is located at the top of the protective cover and is connected to the air telescopic rod through a pressure pipe. The solenoid valve is located on the pressure pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By setting up upper electromagnetic coils and magnetic field generators that can move along the conveying direction on the upper and lower sides of the conveyor belt, when the metal detector detects non-ferrous metal particles passing by, the control unit coordinates the upper electromagnetic coils to alternately energize to generate a magnetic field with changing N and S poles, and at the same time drives the magnetic field generator to move synchronously. The moving alternating magnetic field formed by the two can apply a directional torque to the irregularly shaped non-ferrous metal particles in advance during the conveying process, forcing them to rotate and be oriented in a uniform manner according to the direction of the magnetic field. After being oriented, the particles enter the high-frequency alternating magnetic field formed by the magnetic blocks arranged alternately on the eccentric roller at the end of the conveyor belt. The eddy current repulsion force on each part of the particles tends to be consistent, thereby obtaining a stable and predictable ejection trajectory and accurately falling into the first or second collection hopper, which significantly improves the sorting purity and recovery rate.

[0017] 2. An oil pump is installed to spray lubricant onto the conveyor belt, reducing the friction between the non-ferrous metal particles and the conveyor belt, which helps the non-ferrous metal particles to change direction under the influence of the magnetic field.

[0018] 3. A visual rejection mechanism is set up, which can capture the color of flying particles through a high-speed camera and determine the type of metal in the particles by color. When the high-speed camera captures particles of a specific color flying, the solenoid valve and air pump are activated to fill the air telescopic rod with air. The air telescopic rod extends and drives the pendulum to swing, blocking the particles outside the opening of the protective cover, which is conducive to more precise sorting and recycling of non-ferrous metals. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional structural diagram of a non-ferrous metal sorting and recycling device for scrapped automobiles according to the present invention.

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 This is a schematic diagram of the eddy current mechanism of a non-ferrous metal sorting and recycling device for scrapped automobiles according to the present invention.

[0024] Figure 5 This is a schematic diagram of the visual rejection mechanism of a non-ferrous metal sorting and recycling device for end-of-life vehicles according to the present invention.

[0025] Reference numerals: 1. Frame; 2. Feed hopper; 3. Guide chute; 4. Magnetic roller; 5. Collecting hopper one; 6. Magnetic block; 7. Support; 8. Conveyor belt; 9. Drive roller; 10. Guide roller; 11. Eccentric roller; 12. Electric actuator; 13. Protective cover; 14. Collecting hopper two; 15. Collecting hopper three; 16. Support plate; 17. Vertical plate; 18. Tension spring; 19. Horizontal plate; 20. Control unit; 21. Scraper; 22. Recycling box; 23. Oil pipe; 24. Fuel injector; 25. Fuel pump; 26. Lifting plate; 27. Housing; 28. Slide rail; 29. ​​Upper electromagnetic coil; 30. Metal detector; 31. Slider; 32. Mover; 33. Receiving groove; 34. Excitation coil; 35. Cover plate; 36. Return spring; 37. Roller; 38. Position sensor; 39. Camera; 40. Swing arm; 41. Air telescopic rod; 42. Pressure pipe; 43. Solenoid valve; 44. Air pump; 45. Stator coil. Detailed Implementation

[0026] To better understand the technical content of this invention, a specific embodiment is provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0027] See Figures 1 to 5This invention provides a non-ferrous metal sorting and recycling device for scrapped automobiles, comprising a frame 1, a feed hopper 2, a magnetic separation mechanism, an eddy current mechanism, a guiding mechanism, and a control unit 20. The feed hopper 2 is located at the top of the frame 1, and a guide trough 3 for conveying the material to be sorted to the magnetic separation mechanism is provided below it. The magnetic separation mechanism, the guiding mechanism, and the eddy current mechanism are arranged sequentially along the material conveying direction. The eddy current mechanism includes a support 7, a drive roller 9, a guide roller 10, a conveyor belt 8, an eccentric roller 11, a magnetic block 45, a first collection hopper 5, and a second collection hopper 14. The support 7 is fixedly mounted on the frame 1 and located on the discharge side of the magnetic separation mechanism. The drive roller 9 and the guide roller... 10 is mounted on bracket 7. The conveyor belt 8 is wound around drive roller 9 and guide roller 10 to form a horizontal annular conveying surface. Drive roller 9 is located at the end of the horizontal conveying surface away from the magnetic separation mechanism. Eccentric roller 11 is rotatably disposed inside drive roller 9 and its outer circumferential surface is tangent to the inner circumferential surface of drive roller 9. Multiple magnetic blocks 45 are arranged in a circumferential array along eccentric roller 11 and their S poles and N poles are arranged alternately in sequence, so that a high-frequency alternating magnetic field is formed on the surface area of ​​drive roller 9. Along the material throwing direction, a first collection hopper 5 and a second collection hopper 14 are arranged in sequence on the lower side of eccentric roller 11 to collect non-ferrous metal particles with different trajectories. The guiding mechanism includes a lifting plate 26, an electric push rod 12, a metal detector 30, multiple upper electromagnetic coils 29, and a moving magnetic field generating mechanism. The electric push rod 12 is positioned opposite to the top of the frame 1, and its telescopic end is connected to the lifting plate 26. The lifting plate 26 is horizontally positioned above the conveyor belt 8. The metal detector 30 and multiple upper electromagnetic coils 29 are installed at the bottom of the lifting plate 26, and the multiple upper electromagnetic coils 29 are arranged at intervals along the conveying direction. The moving magnetic field generating mechanism includes a housing 27, a slide rail 28, multiple stator coils 45, a slider 31, and a magnetic field generator. The housing 27 is fixed to the bracket. The upper electromagnetic coil 29 is located on the upper part of the frame 1 and below the conveyor belt 8. The slide rail 28 is arranged inside the housing 27 along the conveying direction. Multiple stator coils 45 are arranged sequentially along the slide rail 28. The slider 31 is slidably connected to the slide rail 28. The bottom of the slider 31 is provided with a corresponding permanent magnet arranged in the same way as the upper electromagnetic coil 29. The magnetic field generator is fixedly installed on the top of the slider 31. The conveyor belt 8 receives the material discharged from the magnetic separation mechanism and conveys it towards the collection hopper 5. The control unit 20 is located on the frame 1 and is electrically connected to the magnetic separation mechanism, drive roller 9, metal detector 30, upper electromagnetic coil 29, stator coil 45 and magnetic field generator.

[0028] When the sorting and recycling equipment is working, the crushed waste car mixture is fed into the magnetic separation mechanism through the feed hopper 2 and the guide chute 3. The magnetic separation mechanism separates and recycles ferromagnetic metals such as iron and steel. The remaining non-ferrous metals such as copper, aluminum, and zinc, as well as non-metallic particles such as plastics and rubber, fall onto the conveyor belt 8, which runs at a constant speed, and move towards the drive roller 9 with the conveyor belt 8. When the material passes under the lifting plate 26, the metal detector 30 detects the passing signal of non-ferrous metal particles and immediately feeds it back to the control unit 20. The control unit 20 then starts the guiding program: on the one hand, multiple upper electromagnetic coils 29 are sequentially energized with alternating current according to a specific timing sequence. Since the multiple upper electromagnetic coils 29 are arranged at intervals along the conveying direction, they generate a moving magnetic field in the space above the conveyor belt 8 that moves along the conveying direction and whose N and S poles alternate; on the other hand, the control unit 20 drives multiple stator coils 45 in the slide rail 28 to be energized sequentially, forming a traveling wave magnetic field, which drives the slider 31 and its magnetic field generator to move along the slide rail 28 at a speed matching the speed of the conveyor belt 8. The moving magnetic field generator and the moving alternating magnetic field generated by the upper electromagnetic coil 29 are superimposed to form a strong magnetic field with dynamically changing direction and intensity in the conveyor belt 8 and the particle area thereon. In this dynamic magnetic field, eddy currents are induced within the non-ferrous metal particles. These eddy currents interact with the applied magnetic field to generate Lorentz forces. For slender, curved copper or aluminum wire particles, the Lorentz forces in each local area are originally random in direction, but under the action of the superimposed moving alternating magnetic field, a continuous directional torque is applied to the particles, forcing them to gradually adjust their posture during conveying. Ultimately, the macroscopic orientation of the particles tends to align with the direction of the magnetic field change, achieving a unified orientation before entering the eddy current sorting process. The oriented non-ferrous metal particles continue to move forward with the conveyor belt 8, reaching the area where the drive roller 9 is located. At this time, the eccentric roller 11 drives the magnetic block 45 on it to rotate at high speed, forming a high-frequency alternating magnetic field on the surface of the drive roller 9. Since the particles have been pre-oriented, their overall force direction is highly consistent, and the direction of the eddy current repulsive force is also basically determined. The particles are then ejected with a stable and concentrated ejection trajectory. Non-metallic particles with weak magnetic permeability and light weight are unaffected by the magnetic field, or only subjected to a very weak force, and fall into the nearest collection hopper 5 due to the inertial movement of the conveyor belt 8. Meanwhile, non-ferrous metal particles that are directionally thrown fly over collection hopper 5 and fall into the more distant collection hopper 14 along a preset parabola, thus achieving efficient and precise separation of non-ferrous metals and non-metals. Throughout the process, the control unit 20 can adjust the extension and retraction of the electric push rod 12 in real time based on the signal from the metal detector 30, thereby changing the distance between the lifting plate 26 and the upper electromagnetic coil 29 and the surface of the conveyor belt 8, ensuring that a sufficient directional magnetic field is generated for materials of different particle sizes. Simultaneously, by adjusting the energizing sequence and frequency of the stator coil 45, the magnetic field generator and the conveyor belt 8 can be kept moving synchronously, ensuring the continuity of action on each batch of materials.

[0029] Preferably, the magnetic separation mechanism includes a support plate 16, a magnetic roller 4, a vertical plate 17, a horizontal plate 19, a tension spring 18, and a scraper 21. The support plate 16 is mounted on the frame 1. The magnetic roller 4 is rotatably mounted on the support plate 16 and located below the guide groove. The vertical plate 17 is mounted on the bottom surface of the support plate 16. The horizontal plate 19 is mounted on the side of the vertical plate 17. One end of the scraper 21 abuts against the lower circumferential surface of the magnetic roller 4, and the other end is hinged to the vertical plate 17. One end of the tension spring 18 is connected to the scraper 21, and the other end is connected to the horizontal plate 19.

[0030] When the mixture falls from the feed chute 3, ferromagnetic materials such as iron and steel are quickly attracted and adhered to the circumferential surface of the magnetic roller 4 by the strong magnetic field generated therein, rotating with the roller. Meanwhile, non-ferrous metals such as copper and aluminum, and non-metallic particles such as plastics and rubber, are not attracted by the magnetic force and fall directly onto the eddy current conveyor belt 8 behind under gravity, completing the initial separation. As the magnetic roller 4 continues to rotate, the attracted ferromagnetic materials are carried to a lower area away from the feed chute 3. At this point, the scraper 21, which is in close contact with the roller surface, forcibly scrapes them off. The tension of the spring 18 ensures that the scraper 21 maintains a constant and sufficient contact pressure with the roller surface during long-term use, effectively removing any stuck particles and avoiding the problem of incomplete scraping due to wear.

[0031] Preferably, the magnetic separation mechanism further includes a recycling box 22 and a collection hopper 3 15. The recycling box 22 is mounted on the frame 1, and the collection hopper 3 15 is located on top of the recycling box 22 and directly below the scraper 21.

[0032] Since the receiving port of the collecting hopper 3 15 is directly opposite the scraping position of the scraper 21, the detached ferromagnetic particles fall directly into the collecting hopper 3 15 under the action of gravity. The funnel-shaped structure of the collecting hopper 3 15, which is wider at the top and narrower at the bottom, plays a role in gathering and guiding the falling material, ensuring that all scraped material is smoothly guided into the recycling bin 22 below for centralized storage, effectively preventing the material from splashing and scattering during the scraping process.

[0033] Preferably, the magnetic field generator includes a mover 32, an excitation coil 34, a cover plate 35, and a return spring 36. The top of the mover 32 has a receiving groove 33, the excitation coil 34 is disposed in the receiving groove 33, the cover plate 35 closes the top opening of the receiving groove 33, and the return spring 36 is respectively disposed on both sides of the mover 32 along the conveying direction, with one end connected to the mover 32 and the other end connected to the inner wall of the housing 27.

[0034] When the control unit 20 determines that the non-ferrous metal particles have entered the guide area based on the signal from the metal detector 30, it supplies a DC current of a preset direction and intensity to the excitation coil 34. The excitation coil 34 generates a strong magnetic field in the receiving groove 33, perpendicular to the surface of the conveyor belt 8. This magnetic field penetrates the cover plate 35 and the conveyor belt 8, covering the area where the particles have passed. At the same time, the control unit 20 drives the stator coil 45 in the slide rail 28 to be energized sequentially, generating a traveling wave magnetic field that pushes the slider 31 to move along the slide rail 28. Since the magnetic field generator is fixed to the top of the slider 31, the mover 32, along with the magnetic field generated inside it, moves synchronously along the conveying direction. During this process, the eddy current induced inside the non-ferrous metal particles interacts with this moving magnetic field, forcing the particles to rotate and adjust their posture. After the particles pass through the guide area, the control unit 20 cuts off the current to the excitation coil 34, the magnetic field disappears, and the return springs 36 on both sides smoothly pull the mover 32 back to the initial center position in the housing 27 through their restoring force, preparing for the movement guidance of the next detection cycle. The reset spring 36 ensures that the mover 32 remains in a controllable position during high-speed reciprocating motion, avoiding positioning deviations caused by motion inertia and guaranteeing the repeatability and stability of the guiding process.

[0035] Preferably, the magnetic field generator further includes a position sensor 38 and a roller 37. The position sensor 38 is disposed on one side of the bottom of the mover 32 for real-time detection of the position of the mover 32. The roller 37 is rotatably disposed on the bottom of the mover 32 and rolls in cooperation with the slide rail 28.

[0036] When the control unit 20 drives the stator coils 45 to generate a traveling wave magnetic field, pushing the slider 31 to move the entire magnetic field generator along the slide rail 28, the roller 37 at the bottom of the mover 32 rolls flexibly on the surface of the slide rail 28, transforming the large frictional resistance present in traditional sliding fits into minimal rolling resistance. When the magnetic field generator generates a magnetic field, the material to be sorted generates eddies, producing a certain reaction force. The roller 37 at the bottom of the mover 32 can offset part of the reaction force, ensuring that the slide rail 28 maintains a good motion state and does not jam due to sudden changes in friction. At the same time, the position sensor 38 continuously feeds back a high-precision real-time position signal to the control unit 20 throughout the movement of the mover 32. The control unit 20 compares this actual position signal with the current running speed of the conveyor belt 8 and dynamically adjusts the energizing sequence and current magnitude of each stator coil 45 to ensure that the moving magnetic field generated by the magnetic field generator always maintains a precise synchronous following relationship with the non-ferrous metal particles being conveyed on the conveyor belt 8. This optimizes the directional torque action time of the dynamic alternating magnetic field on the particles, resulting in more thorough and uniform particle posture adjustment. When the guidance cycle ends and the excitation coil 34 is de-energized, the control unit 20 can also precisely control the reset spring 36 to pull the mover 32 back to the preset initial position based on the signal from the position sensor 38, so as to prepare for the next detection-guidance cycle.

[0037] Preferably, the cover plate 35 and the housing 27 are made of non-metallic materials.

[0038] When the guiding procedure is initiated, the excitation coil 34 generates a strong magnetic field perpendicular to the surface of the conveyor belt 8 within the receiving groove 33 of the mover 32. This magnetic field needs to penetrate upwards through the cover plate 35, the conveyor belt 8, and the material layer it carries in order to form a superimposed alternating magnetic field with the magnetic field generated by the upper electromagnetic coil 29 at the bottom of the lifting plate 26. The cover plate 35 and the housing 27 are made of non-metallic materials to avoid electromagnetic shielding and enhance the magnetic field facing the opening.

[0039] Preferably, it also includes an oil pump 25, an oil pipe 23 and a plurality of oil nozzles 24. The oil pump 25 is located on the top of the lifting plate 26, the oil pipe 23 is located above the conveyor belt 8 and extends along its width direction, one end of the oil pipe 23 is connected to the oil pump 25 and the other end is closed, and the plurality of oil nozzles 24 are located at the bottom of the oil pipe 23 and face the surface of the conveyor belt 8.

[0040] Simultaneously with the initiation of the guiding program, the control unit 20 starts the oil pump 25, which pumps liquid lubricant into the oil pipe 23. The lubricant flows along the oil pipe 23 and is evenly distributed to each nozzle 24. The nozzles 24 spray the lubricant evenly onto the surface of the conveyor belt 8 in a mist or fine stream, forming an extremely thin lubricating film. When non-ferrous metal particles enter the guiding area with the conveyor belt 8, the coefficient of friction between the particles and the surface of the conveyor belt 8 is reduced, which helps the particles adjust their posture on the surface of the conveyor belt 8 when subjected to the rotational torque applied by the dynamic alternating magnetic field.

[0041] The lubricant can be silicone oil or a special release agent, which is a liquid that does not chemically react with the conveyor belt material and has no adverse effect on subsequent sorting processes.

[0042] Preferably, it also includes a protective cover 13, which is disposed on the top of the second hopper 14 and has an opening on its side facing the eccentric roller 11.

[0043] Pre-oriented non-ferrous metal particles are ejected with a high initial velocity along a specific parabolic trajectory under the action of the alternating magnetic field of the eccentric drum 11. The enclosed walls of the protective cover 13 act as physical boundaries. When the material particles collide with the inner wall of the protective cover 13, their kinetic energy is absorbed and they slide down the wall surface by gravity, eventually flowing back into the collection hopper 14. This effectively prevents the non-ferrous metal particles from splashing and scattering during the ejection process, thus improving the recovery rate.

[0044] Preferably, it also includes a visual rejection mechanism, which includes a camera 39, a swing arm 40, an air telescopic rod 41, an air pump 44, a solenoid valve 43, and a pressure pipe 42. The camera 39 is located at the top inside the protective cover 13. The upper end of the swing arm 40 is rotatably connected to the inner wall of the protective cover 13. One end of the air telescopic rod 41 is hinged to the protective cover 13, and the other end is hinged to the side of the swing arm 40. The swing trajectory of the swing arm 40 covers the opening area of ​​the protective cover 13. The air pump 44 is located at the top of the protective cover 13 and is connected to the air telescopic rod 41 through the pressure pipe 42. The solenoid valve 43 is located on the pressure pipe 42.

[0045] When the non-ferrous metal particles, after being separated by eddy current, are ejected by the alternating magnetic field of the eccentric roller 11 and fly into the protective cover 13 through the opening, the high-speed camera 39 continuously captures images of the particles in real time at a high frame rate. The camera 39 transmits the collected image data to the control unit 20 in real time. The control unit 20 has a preset image recognition algorithm and color determination module, which can quickly identify the specific metal type of the particle based on the color characteristics of the particle surface. When the control unit 20 determines through image recognition by the camera 39 that the particle flying in is the target type that needs to be removed, it starts the air pump 44 and the solenoid valve 43. Compressed air is injected into the air telescopic rod 41 through the pressure pipe 42. Driven by the compressed air, the air telescopic rod 41 extends rapidly, pushing the swing rod 40 to swing around its upper hinge point toward the opening of the protective cover 13. The lower end of the swing rod 40 quickly moves to the center area of ​​the opening, forming a mechanical obstruction for the specific particle flying in. Under the action of gravity, the particle falls directly into the collection hopper 5, thus realizing the removal and separation of the specific type of particle. Once the target particle is successfully intercepted, the control unit 20 controls the air telescopic rod 41 to retract quickly, the swing rod 40 returns to its original position, and the opening of the protective cover 13 is reopened, allowing subsequent non-target particles to continue to flow smoothly into the collection hopper 2 14 for normal collection.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-ferrous metal sorting and recycling device for scrapped automobiles, characterized in that, The system includes a frame, a feed hopper, a magnetic separation mechanism, an eddy current mechanism, a guiding mechanism, and a control unit. The feed hopper is located at the top of the frame, and below it is a guide trough for conveying the material to be separated to the magnetic separation mechanism. The magnetic separation mechanism, guiding mechanism, and eddy current mechanism are arranged sequentially along the material conveying direction. The eddy current mechanism includes a support, a drive roller, a guide roller, a conveyor belt, an eccentric drum, magnetic blocks, a first collection hopper, and a second collection hopper. The support is fixed on the frame and located on the discharge side of the magnetic separation mechanism. The drive roller and guide roller are mounted on the support. The conveyor belt wraps around the drive roller and guide roller, forming a horizontal annular conveying surface. The drive roller is located at the end of this horizontal conveying surface away from the magnetic separation mechanism. The eccentric drum is rotatably disposed inside the drive roller, and its outer circumference is tangent to the inner circumference of the drive roller. Multiple magnetic blocks are arranged in a circumferential array along the eccentric drum, with their S poles and N poles alternating sequentially. The first and second collection hoppers are sequentially located below the eccentric drum along the material discharge direction. The guiding mechanism includes a lifting plate, an electric push rod, a metal detector, multiple upper electromagnetic coils, and a moving magnetic field generating mechanism. The electric push rod is positioned opposite each other on the top of the frame, and its telescopic end is connected to the lifting plate. The lifting plate is horizontally positioned above the conveyor belt. The metal detector and multiple upper electromagnetic coils are installed at the bottom of the lifting plate, and the multiple upper electromagnetic coils are arranged at intervals along the conveying direction. The moving magnetic field generating mechanism includes a housing, a slide rail, multiple stator coils, a slider, and a magnetic field generator. The housing is fixed to the bracket and located below the conveyor belt. The slide rail is arranged inside the housing along the conveying direction. The multiple stator coils are arranged sequentially along the slide rail. The slider is slidably connected to the slide rail. The magnetic field generator is fixedly installed on the top of the slider. The conveyor belt receives the material discharged from the magnetic separation mechanism and conveys it towards the collection hopper. The control unit is located on the frame and is electrically connected to the magnetic separation mechanism, drive roller, metal detector, upper electromagnetic coils, stator coils, and magnetic field generator.

2. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, The magnetic separation mechanism includes a support plate, a magnetic roller, a vertical plate, a horizontal plate, a tension spring, and a scraper. The support plate is mounted on the frame. The magnetic roller is rotatably mounted on the support plate and located below the guide groove. The vertical plate is mounted on the bottom surface of the support plate. The horizontal plate is mounted on the side of the vertical plate. One end of the scraper abuts against the lower circumferential surface of the magnetic roller, and the other end is hinged to the vertical plate. One end of the tension spring is connected to the scraper, and the other end is connected to the horizontal plate.

3. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, The magnetic separation mechanism also includes a recycling box and a collection hopper three. The recycling box is located on the frame, and the collection hopper three is located on top of the recycling box and directly below the scraper.

4. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, The magnetic field generator includes a mover, an excitation coil, a cover plate, and a return spring. The mover has a receiving groove on its top, and the excitation coil is placed in the receiving groove. The cover plate closes the top opening of the receiving groove. The return spring is located on both sides of the mover along the conveying direction, with one end connected to the mover and the other end connected to the inner wall of the housing.

5. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 4, characterized in that, The magnetic field generator also includes a position sensor and a roller. The position sensor is located on one side of the bottom of the mover and is used to detect the position of the mover in real time. The roller is rotatably located at the bottom of the mover and rolls in cooperation with the slide rail.

6. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 4, characterized in that, The cover plate and the shell are made of non-metallic materials.

7. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, It also includes an oil pump, an oil pipe and multiple oil nozzles. The oil pump is located on the top of the lifting plate, the oil pipe is located above the conveyor belt and extends along its width, one end of the oil pipe is connected to the oil pump and the other end is closed, and the multiple oil nozzles are located at the bottom of the oil pipe and face the surface of the conveyor belt.

8. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, It also includes a protective cover, which is located on the top of the second hopper and has an opening on its side facing the eccentric roller.

9. The non-ferrous metal sorting and recycling equipment for scrapped automobiles according to claim 1, characterized in that, It also includes a visual rejection mechanism, which comprises a camera, a swing arm, an air telescopic rod, an air pump, a solenoid valve, and a pressure pipe. The camera is located at the top inside the protective cover. The upper end of the swing arm is rotatably connected to the inner wall of the protective cover. One end of the air telescopic rod is hinged to the protective cover, and the other end is hinged to the side of the swing arm. The swing trajectory of the swing arm covers the opening area of ​​the protective cover. The air pump is located at the top of the protective cover and is connected to the air telescopic rod through a pressure pipe. The solenoid valve is located on the pressure pipe.

Images