Eddy current separation process based on material dispersion and magnetic field linkage throw separation

Abstract

The application discloses a vortex current sorting process based on material dispersion and magnetic field linkage throwing sorting, and comprises the following steps: S1, material spreading and dispersion; S2, vortex current throwing dispersion; and S3, sorting baffle sorting. According to the application, the material is shaken to form relatively uniform dispersion and spreading on the sorting conveying belt, and the sorting baffle not only avoids the metal material contacting the sorting baffle from accidentally falling or mixing in the non-metal material, but also enhances the repulsive force of the magnetic field, so that the metal material and the non-metal material are more separated. In addition, the sorting magnetic roller and the moving unit are connected through the same power, the angle and distance of the sorting baffle are adjusted in real time and synchronously based on the magnetic field strength change of the sorting magnetic roller, and the magnetic field formed by the magnet is matched with the required repulsive force of the sorting magnetic roller, so that the probability of material mixing in the material throwing sorting is reduced, and the sorting rate of the material is higher than 98%.

Description

[0001] This application is a divisional application of the application filed on December 27, 2024, with application number 2024119473180, entitled "Integrated Conveying and Sorting Equipment for Material Dispersion and Throwing Based on Eddy Current Separation". Technical Field

[0002] This invention belongs to the field of material transport and sorting, and specifically relates to an eddy current sorting process based on material dispersion and magnetic field linkage. Background Technology

[0003] Eddy current separation is a technology that uses the difference in electrical conductivity of materials for separation. Its basic principle is based on two key physical phenomena: first, an alternating magnetic field that changes with time will generate an alternating electric field (the law of electromagnetic induction); second, a current-carrying conductor will generate a magnetic field in a magnetic field (the Biot-Savart law). That is, during operation, a high-frequency alternating strong magnetic field is generated on the surface of the sorting magnetic roller (a high-frequency alternating strong magnetic field is a magnetic field with a large magnetic field strength and a magnetic field direction that changes periodically with high frequency over time. A higher current frequency helps to generate a high-frequency magnetic field change; a larger current can enhance the magnetic field strength; and the number of coil turns and shape will affect the distribution and strength of the magnetic field). When conductive non-ferrous metals pass through the magnetic field, eddy currents will be induced inside them. These eddy currents will generate a magnetic field in the opposite direction to the original magnetic field, causing the non-ferrous metals to fly forward along the conveying direction due to the repulsive force of the magnetic field. Then, the metal and non-metal materials are separated by the partitions arranged in the sorting area.

[0004] However, the sorting efficiency of eddy current separation is affected by a variety of factors, such as the amount of non-ferrous metals in the crushed solid waste and the metal specific gravity. These factors can also change the final sorting rate due to material conveying. In short, the following drawbacks exist in the sorting operation:

[0005] 1) Because the material is not completely dispersed or relatively evenly spread, when the material passes through the sorting magnetic roller, due to the large proportion or content of non-ferrous metals, it is impossible to form the so-called forward leap or the magnetic force formed by the magnetic field cannot form a repulsive force, thus greatly reducing the sorting rate of metal materials and non-metal materials.

[0006] 2) Because the high-frequency alternating strong magnetic field generated on the surface of the sorting magnetic roller, and the partition used cannot form a matching adjustable spacing, the partition cannot separate metal materials and non-metal materials in the appropriate position. Therefore, due to the inaccurate position of the partition, the probability of mixing between metal materials and non-metal materials is high, which reduces the sorting rate.

[0007] Therefore, there is an urgent need in the market for a sorting device that integrates eddy current separation, material vibration dispersion, throwing, and baffle displacement and flipping auxiliary transmission, that is, a sorting device whose core is based on transmission. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a novel eddy current separation process based on material dispersion and magnetic field linkage throwing.

[0009] To solve the above technical problems, the present invention adopts the following technical solution:

[0010] An eddy current separation process based on material dispersion and magnetic field-linked throwing includes the following steps:

[0011] S1, Material spreading and dispersion

[0012] The material is added from the feed inlet of the paving hopper and shaken forward and scattered onto the sorting conveyor belt below in the vibration direction formed by the vibrator. The material is relatively spread on the inclined dispersing feeding section.

[0013] S2, eddy current dispersion

[0014] Based on the forward transmission of material through the decentralized feeding section and the magnetic field formed by the sorting magnetic roller, the material output is propelled forward by the repulsive force.

[0015] S3, Sorting with partition plates

[0016] Material sorting is performed by adjusting the angle and distance of the sorting partition in real time based on the magnetic field changes of the sorting magnetic roller. Metal materials and non-metal materials are sorted and discharged from the metal material hopper and the non-metal material hopper respectively. The sorting partition includes a plate body, baffle strips on both sides of the plate body, and a receiving panel on the top of the plate body. The receiving panel is inclined from top to bottom and has a magnet at the bottom. The magnetic field formed by the magnet enhances the repulsive force. The sorting partition is installed on a shifting seat and driven by a power unit that is connected to the sorting magnetic roller circuit. The shifting seat moves from the bottom on a track that extends forward and backward via rollers. The shifting seat is equipped with traveling rollers. The power unit includes a shifting power component that pushes the traveling rollers forward or backward. The sorting partition rotates synchronously with the traveling rollers to change θ.

[0017] Preferably, in step S3, the repulsive force generated by the sorting magnetic roller is F, the vertical distance between the upper end of the sorting partition and the sorting magnetic roller is D, and the inclination angle formed by the sorting partition and the horizontal plane is θ, wherein F, D, and θ are directly proportional. That is, by the rolling of the traveling roller, not only can forward and backward movement be achieved, but angle adjustment can also be achieved.

[0018] Furthermore, using the repulsive force F as a reference, the vertical distance D and the tilt angle θ are adjusted synchronously. That is, the vertical distance D and the tilt angle θ are adjusted synchronously under the same power to optimize the structure.

[0019] According to a specific embodiment and preferred aspect of the present invention, in step S3, the traveling roller is a gear, and the displacement power component includes a transmission chain matching the gear, power core rods formed at both ends of the transmission chain, and electromagnetic coils formed on the outer periphery of each power core rod. The electromagnetic coils are electrically connected to the sorting magnetic roller, and based on the energization of the electromagnetic coils, the power core rods move forward or backward to drive the gears to roll forward or backward, and the magnetic field formed by the magnets enhances the repulsive force F. Through circuit control, the correlation between the strength of the magnetic field, the vertical distance D, and the tilt angle θ is achieved.

[0020] Preferably, the shifting seat includes seat bodies located on opposite sides of the sorting conveyor belt, a connecting rod for synchronously connecting the two seat bodies, and a tilting frame fixedly mounted on the connecting rod. The sorting partition is fixedly mounted on the tilting frame, the connecting rod is rotatably mounted on the seat body about its own axis, and the gear is fixed to the connecting rod. Angle adjustment is achieved based on the rotation of the connecting rod, while distance adjustment is implemented during gear shifting.

[0021] Furthermore, each seat body is provided with a sliding groove arranged along the front-to-back direction, and matching grooves intersecting the sliding grooves are provided at both ends of the tilting frame. The transfer unit also includes a follower pin that passes through the sliding groove and the matching groove, and a guide rod installed on the seat body. The guide rod passes through the follower pin and moves the follower pin in the front-to-back direction as the tilting frame tilts. When the tilting power is lost, the follower pin locks the seat body and the tilting frame relative to each other. The tilting angle is guided by the movement of the follower pin, and the relative positioning of the seat body and the tilting frame is also based on the positioning of the follower pin to improve the stability of the tilt angle of the sorting partition.

[0022] In some specific embodiments, there are two gears located within two housings. The displacement power components are configured in a one-to-one correspondence with the gears, and the transmission chains traverse transversely within the housings to create movement avoidance. This effectively improves the equidistant displacement and equiangular tilt of the sorting partitions.

[0023] According to another specific embodiment and preferred aspect of the invention, the upper end of the receiving panel is located above and to the side of the center of the sorting magnetic roller. The magnetic field generated by the magnet further enhances the repulsive force, causing large and small metal particles to be thrown further, which is more conducive to the separation of metal and non-metal materials. At the same time, the height arrangement avoids the probability of material mixing during the throwing process.

[0024] In addition, in step S1, the vibratory paving unit includes a paving hopper that forms a drop with the sorting conveyor belt and whose discharge end is located above the sorting conveyor belt, and a vibrator installed on the paving hopper. The material added to the paving hopper is shaken and dispersed onto the sorting conveyor belt based on the vibration of the vibrator.

[0025] Furthermore, in step S1, the sorting conveyor belt includes a drive roller at the front end, a follower roller at the rear end, and an annular belt wound around the drive roller and the follower roller. The upper part of the annular belt connects with the spreading hopper to form a dispersing feeding section, which slopes upwards from back to front to form a gradient. Based on the continuous conveying formed by the annular conveyor belt, the magnetic field change rate of the sorting magnetic roller is reduced, making material sorting more stable. Based on the inclined gradient, materials that may accumulate are evenly spread backwards and downwards, resulting in more uniform material selection. Furthermore, the angle of the gradient is within 20°. Generally, 2–8° is sufficient.

[0026] In some specific embodiments, the top and front end of the paving hopper are open, with the front end forming an outlet and the top forming an inlet; the vibration direction generated by the vibrator intersects with the forward extension direction of the paving hopper, and the vibration direction remains forward.

[0027] Preferably, the top and front end of the paving hopper are open, with the front end forming an outlet and the top forming an inlet; the vibration direction generated by the vibrator intersects with the forward extension direction of the paving hopper, and the vibration direction remains forward. Physical dispersion paving is achieved based on vibration shaking, resulting in relatively uniform paving of the material on the sorting conveyor belt.

[0028] Furthermore, a triangular base is provided on the bottom plate of the paving hopper. The triangular base is horizontal with the bottom plate as its long side, and the vibrator is vertically mounted on one of the short sides of the triangular base, with the vibration direction forward and tilted upward. This allows the vibration to assist in feeding the material and is more conducive to the dispersion and paving of the material.

[0029] Due to the implementation of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0030] Existing material sorting methods suffer from several drawbacks. Firstly, the materials are not fully dispersed or evenly spread. When materials pass through the sorting magnetic roller, the higher density or content of non-ferrous metals prevents them from "leaping forward" or generating a repulsive force from the magnetic field, significantly reducing the sorting rate between metallic and non-metallic materials. Secondly, the high-frequency alternating strong magnetic field generated on the surface of the sorting magnetic roller, coupled with the inability of the baffles to adjust their spacing appropriately, prevents the baffles from separating metallic and non-metallic materials at suitable positions. This inaccurate baffle positioning leads to a higher probability of mixing between metallic and non-metallic materials, further reducing the sorting rate. This invention addresses these shortcomings by comprehensively designing an eddy current sorting process based on material dispersion and magnetic field-linked throwing. This process cleverly solves the deficiencies of existing technologies. The eddy current sorting process first uses vibration to evenly disperse the material onto the sorting conveyor belt below, while simultaneously spreading the material relatively evenly on... The invention utilizes a sorting conveyor belt; secondly, it uses the magnetic field generated by the sorting magnetic roller to disperse the material output through repulsive force, thus separating metallic and non-metallic materials; finally, it adjusts the angle and distance of the sorting baffles in real time based on changes in the magnetic field to further separate metallic and non-metallic materials. Therefore, this invention, on the one hand, uses vibration to disperse and spread the material relatively evenly on the sorting conveyor belt. Simultaneously, the sorting baffles not only prevent metallic materials from accidentally scattering or mixing with non-metallic materials, but also enhance the repulsive force through the magnetic field, causing large and small metallic particles to be thrown further, which is more conducive to the separation of metallic and non-metallic materials. On the other hand, it uses circuit connectivity to link the sorting magnetic roller and the transfer unit. As the magnetic field strength of the sorting magnetic roller changes, the angle and distance of the sorting baffles are adjusted in real time and synchronously based on the same power source. Furthermore, the magnetic field generated by the magnets matches the repulsive force required by the sorting magnetic roller, reducing the probability of material mixing during the sorting process and ensuring a material sorting rate higher than 98%. Attached Figure Description

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic diagram of the integrated conveying and sorting equipment for material dispersion and throwing based on eddy current separation, as shown in this embodiment.

[0033] Figure 2 for Figure 1 Front view diagram;

[0034] Figure 3 for Figure 2 A top-down view;

[0035] Figure 4 for Figure 3 Schematic diagram of the sectional view along the central AA direction;

[0036] Figure 5 for Figure 1 Partial structural diagram;

[0037] Figure 6 for Figure 1 Partial structural diagram;

[0038] Figure 7 for Figure 6 A top-down view;

[0039] Figure 8 for Figure 7 Schematic diagram of the BB-direction section;

[0040] Figure 9 for Figure 6 Partial structural diagram;

[0041] Figure 10 for Figure 9 Front view diagram;

[0042] Figure 11 for Figure 10 A top-down view;

[0043] Figure 12 for Figure 11 Enlarged cross-sectional view along the CC direction;

[0044] Among them: 1. Sorting conveyor belt; 10. Drive roller; 11. Follower roller; 12. Circular belt;

[0045] 2. Sorting magnetic rollers;

[0046] 3. Sorting partition; 30. Plate body; 31. Baffle strip; 32. Receiving panel; 33. Magnet;

[0047] 4. Vibratory paving unit; 40. Paving hopper; 41. Vibrator; 42. Triangular base;

[0048] 5. Transfer unit; 50. Transfer seat; 500. Roller; 50a. Seat body; 50b. Connecting rod; 50c. Tilting frame; 51. Power unit; 510. Transfer power component; a. Transmission chain; b. Power core rod; c. Electromagnetic coil; h. Sliding groove; q. Matching groove; 52. Traveling roller; 54. Follower pin; 55. Guide rod;

[0049] 6. Metal material hopper;

[0050] 7. Non-metallic material hopper;

[0051] 8. Material cover;

[0052] 9. Masking cover. Detailed Implementation

[0053] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0059] like Figures 1 to 12 As shown, the material dispersion and throwing integrated conveying sorting equipment based on eddy current separation in this embodiment includes a sorting conveyor belt 1, a sorting magnetic roller 2, a sorting partition 3, a vibrating paving unit 4, a transfer unit 5, a metal material hopper 6, and a non-metal material hopper 7.

[0060] Specifically, the sorting conveyor belt 1 includes a drive roller 10 at the front end, a follower roller 11 at the rear end, and an annular belt 12 wound around the drive roller 10 and the follower roller 11. The upper part of the annular belt 12 is connected to the vibrating paving unit 4 to form a dispersive feeding section. The sorting magnetic roller 2 is located inside the drive roller 10 and generates a high-frequency alternating strong magnetic field based on alternating current. In some specific embodiments, the continuous transmission formed by the annular conveyor belt reduces the rate of change of the magnetic field of the sorting magnetic roller 2, making the material sorting more stable. The dispersive feeding section slopes upward from back to front to form an incline. Based on the inclined incline, materials that may accumulate are evenly spread backward and downward, achieving more uniform throwing and sorting. The incline angle is within 20°, generally 2 to 8° is sufficient. In this example, the incline angle is 2.21°.

[0061] In this example, the sorting partition 3 is located at the front end of the sorting conveyor belt 1, the vibratory paving unit 4 is located at the rear end of the sorting conveyor belt 1, and the angle and position of the sorting partition 3 are adjusted based on the transfer unit 5.

[0062] In some specific embodiments, the vibratory paving unit 4 includes a paving hopper 40 that forms a drop with the sorting conveyor belt 1 and whose discharge end is located above the sorting conveyor belt 1, and a vibrator 41 disposed on the paving hopper 40. The material added to the paving hopper is dispersed onto the sorting conveyor belt 1 by the vibration of the vibrator 41. The top and front end of the paving hopper 40 are open, with the front end forming an outlet and the top forming an inlet. The vibration direction generated by the vibrator 41 intersects with the forward extension direction of the paving hopper 40, and the vibration direction remains forward. Physical dispersion paving is achieved by vibration and dispersing, so that the material is spread relatively evenly on the sorting conveyor belt. Furthermore, a triangular base 42 is provided on the bottom plate of the paving hopper 40. The triangular base 42 is horizontal with the bottom plate as its long side, and the vibrator 41 is vertically disposed on one of the short sides of the triangular base 42, with the vibration direction forward and inclined upward. This allows the vibration to assist in feeding and is more conducive to the dispersion and paving of the material.

[0063] The transfer unit 5 includes a transfer seat 50 located at the output end of the sorting conveyor belt 1, relatively close to and away from the sorting magnetic roller 2 along the material conveying direction, and a power unit 51 that drives the transfer seat 50 to move. The power unit 51 is electrically connected to the sorting magnetic roller 2. A sorting partition 3 is mounted on the transfer seat 50, and the sorting partition 3 rotates synchronously with the movement of the transfer seat 50 to change its tilt angle. The repulsive force generated by the sorting magnetic roller 2 is F, the vertical distance between the upper end of the sorting partition 3 and the sorting magnetic roller 2 is D, and the tilt angle formed by the sorting partition 3 and the horizontal plane is θ. F, D, and θ are directly proportional. In this example, the repulsive force F is used as a reference, and the vertical distance D and the tilt angle θ are adjusted synchronously. That is, the vertical distance D and the tilt angle θ are adjusted synchronously under the same power, optimizing the structure.

[0064] In some specific embodiments, the shifting seat 50 moves from the bottom along a front-to-back extended track via rollers 500, and a traveling roller 52 is provided on the shifting seat 50. The power unit 51 includes a shifting power component 510 that pushes the traveling roller 52 to roll forward or backward. The sorting partition 3 rotates synchronously with the traveling roller 52 to change θ. That is, by the rolling of the traveling roller, not only forward and backward displacement can be achieved, but also angle adjustment can be achieved. The shifting seat 50 includes seat bodies 50a located on opposite sides of the sorting conveyor belt 1, a connecting rod 50b for synchronously connecting the two seat bodies 50a, and a flipping frame 50c fixedly installed on the connecting rod 50b. The sorting partition 3 is fixedly installed on the flipping frame 50c, the connecting rod 50b is rotatably installed on the seat body 50a around its own axis, and the traveling roller 52 is a gear, which is fixed on the connecting rod 50b. Angle adjustment is achieved based on the rotation of the connecting rod, and distance adjustment is implemented during gear displacement. The shifting power component 510 includes a transmission chain a that matches the gears, power core rods b formed at both ends of the transmission chain a, and electromagnetic coils c formed on the outer periphery of each power core rod b. The electromagnetic coils c are electrically connected to the sorting magnetic roller 2, and based on the energization of the electromagnetic coils c, the power core rods b move forward or backward to drive the gears to roll forward or backward. Through circuit control, the correlation between the strength of the magnetic field, the vertical distance D, and the tilt angle θ is realized.

[0065] In this example, each seat body 50a has a sliding groove h arranged along the front-to-back direction, and each end of the tilting frame 50c has a matching groove q intersecting the sliding groove h. The transfer unit 5 also includes a follower pin 54 passing through the sliding groove h and the matching groove q, and a guide rod 55 mounted on the seat body 50a. The guide rod 55 passes through the follower pin 54 and moves the follower pin 54 in the front-to-back direction as the tilting frame 50c tilts. When the tilting power is lost, the follower pin 54 locks the seat body 50a and the tilting frame 50c relative to each other. The movement of the follower pin guides the tilting angle, and also positions the seat body and the tilting frame relative to each other based on the positioning of the follower pin, thereby improving the stability of the tilt angle of the sorting partition. In some specific embodiments, there are two gears located in the two seat bodies 50a. The displacement power component 510 is arranged in a one-to-one correspondence with the gears, and the transmission chain a passes through the seat body 50a to form a movement avoidance. This effectively improves the equidistant displacement and equiangular tilt of the sorting partition.

[0066] Furthermore, the sorting baffle 3 includes a plate body 30, baffle strips 31 located on both sides of the plate body 30, and a receiving panel 32 located on the top of the plate body 30, wherein the receiving panel 32 is inclined from top to bottom. Based on the shape of the sorting baffle, it is more conducive to the transfer of sorted materials and avoids accidental scattering or mixing of metal materials in contact with the sorting baffle with non-metallic materials. A magnet 33 is provided at the bottom of the receiving panel 32. The magnetic field formed by the magnet further enhances the repulsive force, causing large and small metal particles to be thrown further, which is more conducive to the separation of metal and non-metal materials. Furthermore, the upper end of the receiving panel 32 is located to the side and above the center of the sorting magnetic roller 2. This height-based layout reduces the probability of material mixing during the throwing process.

[0067] The metal material hopper 6 is located in front of the non-metallic material hopper 7, and a material cover 8 is also provided on the transfer unit 5. The material cover 8 covers the sorting partition 3 and the front end, and a shield 9 is also provided above the sorting conveyor belt 1.

[0068] In summary, the implementation process of this embodiment is as follows:

[0069] S1, Material spreading and dispersing

[0070] The material is added from the feed inlet of the spreading hopper 40, and is shaken forward and scattered on the sorting conveyor belt 1 below in the vibration direction formed by the vibrator 41. The material is relatively spread on the inclined dispersing feeding section.

[0071] S2, eddy current dispersion

[0072] Based on the forward transmission of the dispersed feeding section and the magnetic field formed by the sorting magnetic roller 2, the material output is thrown forward by the repulsive force;

[0073] S3, Sorting with partition plates

[0074] The angle and distance of the sorting partition 3 are adjusted in real time based on the change of the magnetic field. The power core rod b moves forward or backward based on the energization of the electromagnetic coil c to drive the gear to roll forward or backward. Combined with the magnetic field formed by the magnet, the repulsive force is further enhanced. Thus, in the material throwing and sorting, metal materials and non-metal materials are sorted and discharged from the metal material hopper 6 and the non-metal material hopper 7 respectively.

[0075] Therefore, this invention addresses several key aspects. First, it utilizes vibration to disperse and spread materials relatively evenly across the sorting conveyor belt, allowing the sorting magnetic rollers to perform throwing and separation under conditions of minimal variation in magnetic field strength. Second, it adjusts the position and angle of the sorting partitions in real-time based on the magnetic field strength of the magnetic rollers to reduce the probability of material mixing during throwing, thereby ensuring a sorting rate of over 98% for both metallic and non-metallic materials. Third, it employs vibration to physically disperse and spread materials evenly across the sorting conveyor belt. Fourth, the continuous conveying via the annular conveyor belt reduces the rate of change in the magnetic field of the sorting magnetic rollers, resulting in more stable material sorting. Furthermore, the inclined slope of the dispersing feeding section evenly spreads materials that might accumulate backward and downward, enabling more uniform throwing (typically 2–8°). Fifth, it simultaneously adjusts the vertical distance D and the inclination angle θ under the same power source, optimizing the structure. The rolling of the traveling rollers not only enables forward and backward movement but also angle adjustment, which is then controlled by circuitry. The relationship between magnetic field strength, vertical distance D, and tilt angle θ; sixthly, angle adjustment is achieved based on the rotation of the connecting rod, while distance adjustment is implemented during gear shifting, and the tilt angle is guided during the movement of the follower pin. The positioning of the follower pin also relative positions the seat body and the tilting frame, improving the stability of the sorting partition's tilt angle; seventhly, there are two gears located within the two seat bodies, with the shifting power components corresponding to each gear, and the transmission chains traversing the seat bodies to create movement avoidance, effectively improving the equal-distance shift and equal-angle tilt of the sorting partition; eighthly, the shape of the sorting partition facilitates the transfer of sorted materials, preventing accidental spillage or mixing of metal materials in contact with the partition with non-metallic materials. Furthermore, a magnet is located at the bottom of the receiving panel, and the magnetic field generated by the magnet further enhances the repulsive force, causing large and small metal particles to be thrown further, thus facilitating the separation of metal and non-metallic materials; simultaneously, the upper end of the receiving panel is located above and to the side of the center of the sorting magnetic roller, with a height-based layout to minimize the probability of material mixing during the throwing process.

[0076] The present invention has been described in detail above, but the present invention is not limited to the embodiments described above. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An eddy current separation process based on material dispersion and magnetic field-linked throwing, characterized in that, It includes the following steps: S1, material spreading and dispersion The material is added from the feed inlet of the paving hopper and shaken forward and scattered onto the sorting conveyor belt below in the vibration direction formed by the vibrator. The material is relatively spread on the inclined dispersing feeding section. S2, eddy current dispersion Based on the forward transmission of material through the decentralized feeding section and the magnetic field formed by the sorting magnetic roller, the material output is propelled forward by the repulsive force. S3, Sorting with partition plates Material sorting is performed by adjusting the angle and distance of the sorting baffle in real time based on the magnetic field changes of the sorting magnetic roller. Metallic and non-metallic materials are sorted and discharged from the metal material hopper and non-metallic material hopper respectively. The sorting baffle includes a plate body, baffle strips on both sides of the plate body, and a receiving panel on top of the plate body. The receiving panel is inclined from top to bottom, and a magnet is located at the bottom of the receiving panel. The magnetic field generated by the magnet enhances the repulsive force. The repulsive force generated by the sorting magnetic roller is F. The vertical distance between the upper end of the sorting baffle and the sorting magnetic roller is D. The inclination angle formed by the sorting baffle and the horizontal plane is θ. The repulsive force F is a reference benchmark, and the vertical distance D and the inclination angle θ are adjusted synchronously, with F, D, and θ being directly proportional. The sorting baffle is installed on the transfer seat of the transfer unit and driven by a power unit connected to the sorting magnetic roller circuit. The transfer seat moves back and forth from the bottom via rollers. The extended track is equipped with traveling rollers on the shifting seat. The traveling rollers are gears. The power unit includes a shifting power component that pushes the traveling rollers forward or backward. The shifting power component includes a transmission chain that matches the gears, a power core rod formed at both ends of the transmission chain, and an electromagnetic coil formed on the outer periphery of each power core rod. The electromagnetic coils are connected to the sorting magnetic rollers by a circuit. Based on the energization of the electromagnetic coils, the power core rods move forward or backward to drive the gears to roll forward or backward. The magnetic field formed by the magnets enhances the repulsive force F. The shifting seat includes seat bodies located on opposite sides of the sorting conveyor belt, a connecting rod for synchronously connecting the two seat bodies, and a tilting frame fixedly installed on the connecting rod. The sorting partition is fixedly installed on the tilting frame. The sorting partition rotates synchronously with the traveling rollers to change θ. The connecting rod is rotated around its own axis and installed on the seat body. The gear is fixed on the connecting rod.

2. The eddy current separation process based on material dispersion and magnetic field-linked throwing as described in claim 1, characterized in that, Each seat body is provided with a sliding groove arranged along the front-to-back direction. At both ends of the flipping frame, there are matching grooves that intersect with the sliding grooves. The transfer unit also includes a follower pin that passes through the sliding groove and the matching groove, and a guide rod installed on the seat body. The guide rod passes through the follower pin and moves the follower pin in the front-to-back direction as the flipping frame flips. When the flipping power is lost, the follower pin locks the seat body and the flipping frame relative to each other.

3. The eddy current separation process based on material dispersion and magnetic field-linked throwing as described in claim 1, characterized in that, The upper end of the receiving panel is located above and to the side of the center of the sorting magnetic roller.

4. The eddy current separation process based on material dispersion and magnetic field-linked throwing as described in claim 1, characterized in that, In step S1, the vibratory paving unit includes a paving hopper that forms a drop with the sorting conveyor belt and whose discharge end is located above the sorting conveyor belt, and a vibrator installed on the paving hopper. The material added to the paving hopper is shaken and dispersed onto the sorting conveyor belt based on the vibration of the vibrator.

5. The eddy current separation process based on material dispersion and magnetic field-linked throwing as described in claim 4, characterized in that, In step S1, the sorting conveyor belt includes a drive roller at the front end, a follower roller at the rear end, and an annular belt wound around the drive roller and the follower roller. The upper part of the annular belt is connected to the paving hopper to form a distributed feeding section. The distributed feeding section curves upward from back to front to form a slope angle, and the angle of the slope angle is within 20°.

6. The eddy current separation process based on material dispersion and magnetic field-linked throwing as described in claim 5, characterized in that, The top and front end of the paving hopper are open, with the front end forming an outlet and the top forming an inlet; the vibration direction generated by the vibrator intersects with the forward extension direction of the paving hopper, and the vibration direction remains forward.

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