Metal scrap classification and recycling device for metal resource recycling

Abstract

This invention relates to the field of metal scrap classification and recycling technology, and discloses a metal scrap classification and recycling device for metal resource recycling. The device includes a vortex separator, a screening frame slidably installed inside the vortex separator, and several screen plates fixedly installed inside the screening frame. The screen plates are arranged vertically according to their screen aperture diameter from largest to smallest, and the length of the screen plate corresponds to its screen aperture diameter. Each screen plate has a discharge chute at its end. A collection hopper and several discharge hoppers are fixedly installed at the lower end of the screening frame. This metal scrap classification and recycling device uses a second motor to drive a cam to rotate. Through the cam's limiting of the limiting rod and the pushing force of the spring, the screening frame reciprocates, allowing the metal scrap to slide continuously inside, improving screening efficiency. Furthermore, because the screen plates are all inclined inside the screening frame, the metal scrap is less likely to slide into the discharge chute due to gravity, extending the screening time and improving the screening effect.

Description

Technical Field

[0001] This invention relates to the field of metal scrap sorting and recycling technology, specifically to a metal scrap sorting and recycling device for the recycling of metal resources. Background Technology

[0002] Metal scrap sorting and recycling devices are equipment used to sort and recycle metal scraps. Existing technologies typically employ magnetic separation and eddy current separation methods to classify metal scraps. Magnetic separation utilizes magnetic differences to separate ferromagnetic metals by using electromagnets to attract ferrous metals and separate them from non-ferrous metals. Eddy current separation uses the high-speed rotation of magnetic rollers to create a high-frequency alternating magnetic field. When non-ferrous metals pass through the magnetic field, eddy currents are generated inside due to electromagnetic induction, which in turn generates a magnetic field opposite to the original magnetic field. This repulsive force separates the non-ferrous metals. This device, through sorting and recycling, allows metal scraps to be reused, reducing the demand for new metal resources and avoiding environmental pollution caused by metal scraps. It helps protect the ecological environment and is widely used in industries such as metal processing, machinery manufacturing, and automobile repair.

[0003] During the sorting and recycling of metal scrap, it is difficult to standardize the size of the scrap. When non-ferrous metal scrap is sorted by eddy current, larger scrap cuts through more magnetic induction lines, resulting in larger eddy currents and greater repulsive forces that cause it to fly out. Smaller scrap, on the other hand, experiences less repulsive force and may be difficult to separate. If a strong magnetic roller is used, larger scrap may experience strong repulsive forces and collide with the inner wall of the device, causing the scrap to scatter and making accurate collection difficult. Prolonged collisions may also increase wear and tear on the device and even damage it. Therefore, we propose a metal scrap sorting and recycling device for metal resource recycling. Summary of the Invention

[0004] The purpose of this invention is to provide a metal scrap sorting and recycling device for metal resource recycling, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal scrap sorting and recycling device for metal resource recycling, comprising a vortex separator, a screening frame slidably installed inside the vortex separator, a plurality of screen plates fixedly installed inside the screening frame, the screen plates being arranged vertically in descending order of their screen hole diameter, and the length of the screen plate corresponding to its screen hole diameter, each screen plate having a discharge trough at its end, a collection hopper and a plurality of discharge hoppers fixedly installed at the lower end of the screening frame, the discharge hoppers corresponding one-to-one with and communicating with the discharge troughs, and the collection hoppers being located below the bottommost screen plate;

[0006] Several magnetic shafts are rotatably installed inside the vortex separator. Each magnetic shaft corresponds to a collection hopper and a discharge hopper, and they are arranged laterally according to the magnetic field strength. Adjacent magnetic shafts are fixedly connected. A third motor for driving the magnetic shafts to rotate is fixedly installed on the vortex separator. A drive shaft is rotatably installed inside the vortex separator. A second conveyor belt is installed between each magnetic shaft and the drive shaft. A first partition plate and a second partition plate are fixedly installed inside the vortex separator. The first partition plate and the inner wall of the vortex separator form a second collection hopper for collecting non-ferrous metals, and the second partition plate and the inner wall of the vortex separator form a third collection hopper for collecting non-ferrous metals.

[0007] Preferably, a second motor is fixedly installed on the vortex separator, a cam is fixedly installed on the output end of the second motor, a limiting rod that cooperates with the cam is fixedly installed on the screening frame, and a number of springs are fixedly installed between one end of the screening frame and the inner wall of the vortex separator, and each screen plate is inclined in the screening frame.

[0008] Preferably, a sealing cylinder is fixedly installed on the inner wall of the vortex separator, and a piston that cooperates with the sealing cylinder is fixedly installed on the screening frame. One end of the sealing cylinder is provided with a number of air holes, and a number of elastic strips for sealing the air holes are fixedly installed in each air hole. The elastic strips are arranged in a circle.

[0009] Preferably, each of the elastic strips is inclined, and its ends are inclined outward from the sealing cylinder. Each of the air holes is fixedly installed with a fixing ring to prevent the elastic strip from deforming into the sealing cylinder.

[0010] Preferably, a magnetic separation chamber is fixedly installed on the vortex separator, and two rotating shafts are rotatably installed inside the magnetic separation chamber. A first motor for driving one of the rotating shafts to rotate is fixedly installed on the outer wall of the magnetic separation chamber. A first conveyor belt is installed between the two rotating shafts. A first collection hopper for collecting magnetic metals is fixedly installed at the lower end of the outlet of the magnetic separation chamber, and a magnetic strip is fixedly installed in the rotating shaft corresponding to the top of the first collection hopper.

[0011] Preferably, a scraper for scraping metal debris from the surface of the first conveyor belt is fixedly installed at the upper end of the first collecting hopper, and a guide plate for allowing metal debris to enter the screening frame is fixedly installed at the outlet of the magnetic separator.

[0012] Preferably, a guide seat is fixedly installed inside the vortex separator. The upper end of the guide seat is connected to both the second and third collection hoppers. The upper end of the guide seat is set as an inclined surface and tilts towards the second collection hopper. A magnetic roller is rotatably installed inside the guide seat. A pulley is fixedly installed at the end of the magnetic roller and at the end of one of the magnetic shafts. A belt is installed between the two pulleys for transmission.

[0013] Preferably, a plurality of feed pipes are fixedly installed inside the vortex separator, each feed pipe is located above the corresponding second conveyor belt, each feed pipe has a flexible pipe connected to its upper end, and each flexible pipe has its upper end connected to the corresponding collection hopper and feed hopper.

[0014] Preferably, protective strips for preventing metal debris from splashing are fixedly installed on both sides of the first conveyor belt and on both sides of each second conveyor belt.

[0015] Preferably, several rollers are rotatably mounted on both sides of the screening frame, and several guide strips for limiting the position of the rollers are fixedly installed on the inner walls of both sides of the vortex separator.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention utilizes a second motor to drive a cam to rotate. The cam limits the position of the limiting rod, and the spring force pushes the screening frame to slide back and forth. Metal scraps slide continuously inside the frame, improving screening efficiency. Furthermore, since the screen plates are all inclined inside the screening frame, the metal scraps are less likely to slide down the feed trough due to gravity, extending the screening time and improving the screening effect.

[0018] 2. This invention utilizes elastic strips to adjust the effective ventilation area of ​​the air holes. When the piston moves into the sealing cylinder, the ends of the elastic strips are all inclined outward from the sealing cylinder, and the elastic strips do not affect the outward flow of air. When the piston moves outward from the sealing cylinder, the elastic strips are affected by the airflow, and their ends will deform inward from the sealing cylinder, hindering the flow of air into the sealing cylinder. During the initial movement, the metal scraps in the screening frame can quickly move to the corresponding feed chute, while the screen frame resets relatively slowly. The metal scraps are subject to less inertia and will not reset synchronously with the screen frame to the initial stage, preventing the metal scraps from accumulating at one end of the screen plate due to the inclined screen plate.

[0019] 3. This invention utilizes the repulsive force that causes non-ferrous metal fragments to fly out when passing through the magnetic shaft and fall into the third collection hopper for collection. The magnetic shaft is arranged laterally according to the magnetic field strength, so that smaller non-ferrous metal fragments can also be subjected to sufficient repulsive force to fly into the third collection hopper, while the repulsive force on larger non-ferrous metal fragments is not too great, so that larger non-ferrous metal fragments will not collide with the inner wall of the vortex separator and splash.

[0020] 4. This invention utilizes a first and a second partition plate to separate metal scraps. After non-ferrous metal scraps collide with each other, they fall together between the first and second partition plates and onto the guide seat. The non-ferrous metal scraps move along the guide seat into the second collection hopper. At the same time, the magnetic shaft drives the magnetic roller to rotate, performing secondary eddy current screening on the colliding metal scraps, causing the non-ferrous metal scraps to move into the third collection hopper, thus improving the accuracy of non-ferrous metal screening.

[0021] 5. This invention utilizes a magnetic strip to generate a magnetic attraction force on magnetic fragments in metal scraps. This prevents the magnetic fragments from falling as they pass through the outlet of the magnetic separation chamber. Instead, they remain adhered to the first conveyor belt due to the magnetic attraction force and gradually move away from the magnetic strip as the first conveyor belt moves along with it. When the magnetic fragments move above the first collection hopper, the magnetic attraction force of the magnetic strip on them is weaker, and the magnetic fragments are scraped off by a scraper, eventually falling into the first collection hopper, thus completing the collection of magnetic fragments from the metal scraps. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the magnetic separation chamber of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the vortex separator of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the screening frame of the present invention;

[0026] Figure 5 This is a schematic diagram of the cam and limiting rod structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the sealing cylinder and piston structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the internal structure of the sealing cylinder of the present invention;

[0029] Figure 8 This is a schematic diagram of the elastic strip structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the material guide seat structure of the present invention.

[0031] In the diagram: 1-Magnetic separator; 2-Vortex separator; 3-Rotating shaft; 4-First motor; 5-First conveyor belt; 6-Protective strip; 7-Magnetic strip; 8-First collecting hopper; 9-Scraper; 10-Guide plate; 11-Screwing frame; 12-Screwing plate; 13-Roller; 14-Guide strip; 15-Spring; 16-Second motor; 17-Cam; 18-Limiting rod; 19-Collection hopper; 20-Discharge chute; 21-Flexible tube ; 22-Drive shaft; 23-Magnetic shaft; 24-Second conveyor belt; 25-Piston; 26-Sealing cylinder; 27-Elastic strip; 28-Fixing ring; 29-Second collecting hopper; 30-Third collecting hopper; 31-First dividing plate; 32-Second dividing plate; 33-Guide seat; 34-Magnetic roller; 35-Pulley; 36-Belt; 37-Discharge pipe; 38-Air hole; 39-Discharge hopper; 40-Third motor. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-9This invention provides a technical solution: a metal scrap sorting and recycling device for metal resource recycling, comprising a vortex separator 2, a magnetic separator 1 fixedly installed on the vortex separator 2, two rotating shafts 3 rotatably installed inside the magnetic separator 1, a first motor 4 fixedly installed on the outer wall of the magnetic separator 1 for driving one of the rotating shafts 3 to rotate, a first conveyor belt 5 for transmission between the two rotating shafts 3, a first collection hopper 8 for collecting magnetic metal fixedly installed at the lower end of the outlet of the magnetic separator 1, a magnetic strip 7 fixedly installed in the rotating shaft 3 corresponding to the top of the first collection hopper 8, a scraper 9 fixedly installed at the upper end of the first collection hopper 8 for scraping metal scrap from the surface of the first conveyor belt 5, and a guide plate 10 fixedly installed at the outlet of the magnetic separator 1 for allowing the metal scrap to enter a screening frame 11. After entering the magnetic separation chamber 1, the first motor 4 starts, causing the first conveyor belt 5 to move the metal scraps towards the outlet. When the metal scraps pass the rotating shaft 3 at the outlet, the magnetic strip 7 inside the rotating shaft 3 will generate a magnetic attraction force on the magnetic scraps in the metal scraps, so that the magnetic scraps will not fall when passing the outlet of the magnetic separation chamber 1, but will still adhere to the first conveyor belt 5 due to the magnetic attraction force, and will gradually move away from the magnetic strip 7 as the first conveyor belt 5 moves together. When the magnetic scraps move to the top of the first collection hopper 8, the magnetic attraction force of the magnetic strip 7 on them is small, and the magnetic scraps will be scraped off by the scraper 9, and finally fall into the first collection hopper 8, completing the collection of magnetic scraps in the metal scraps. The non-magnetic metal scraps, after being conveyed by the first conveyor belt 5, will pass through the guide plate 10 and fall into the vortex separation chamber 2.

[0034] A screening frame 11 is slidably installed inside the vortex separator 2. Several rollers 13 are rotatably installed on both sides of the screening frame 11. Several guide strips 14 are fixedly installed on the inner walls of both sides of the vortex separator 2 to limit the rollers 13. By limiting the rollers 13 through the guide strips 14, the screening frame 11 can slide laterally inside the vortex separator 2, and the rollers 13 can reduce friction during sliding. Several screen plates 12 are fixedly installed inside the screening frame 11. The screen plates 12 are arranged vertically according to their screen hole diameter from large to small, and the length of the screen plate 12 corresponds to the size of its screen hole diameter. Each screen plate 12 is provided with a discharge chute 20 at its end. A collection hopper 19 and several discharge hoppers 39 are fixedly installed at the lower end of the screening frame 11. The discharge hoppers 39 correspond one-to-one with the discharge chute 20. Furthermore, the hopper 19 is located below the lowest screen plate 12. A second motor 16 is fixedly installed on the vortex separator 2, and a cam 17 is fixedly installed on the output end of the second motor 16. A limiting rod 18 that cooperates with the cam 17 is fixedly installed on the screening frame 11. Several springs 15 are fixedly installed between one end of the screening frame 11 and the inner wall of the vortex separator 2. Each screen plate 12 is inclined within the screening frame 11. A sealing cylinder 26 is fixedly installed on the inner wall of the vortex separator 2. A piston 25 that cooperates with the sealing cylinder 26 is fixedly installed on the screening frame 11. Several air holes 38 are provided at one end of the sealing cylinder 26. Several elastic strips 27 for sealing the air holes 38 are fixedly installed in each air hole 38. The elastic strips 27 are arranged in a circle, and each elastic strip 27 is inclined. The screens are angled, with their ends all inclined outwards towards the sealing cylinder 26. Each air hole 38 has a fixed ring 28 installed inside to prevent the elastic strip 27 from deforming into the sealing cylinder 26. After the magnetically separated metal scraps enter the screening frame 11, the second motor 16 starts, driving the cam 17 to rotate. The cam 17's tip limits the movement of the limiting rod 18, causing the screening frame 11 to slide within the vortex separator 2 and compressing the spring 15. After the cam 17's tip passes the limiting rod 18, the screening frame 11 is reset by the spring force of the spring 15, and the screening frame 11 slides back and forth, allowing the metal scraps to slide continuously inside, improving screening efficiency. Furthermore, because the screen plates 12 are all angled within the screening frame 11, the metal scraps are less likely to fall into the feed trough 2 due to gravity. The zero-slip movement extends the screening time and improves the screening effect. Simultaneously, during the initial sliding process of the screening frame 11, the piston 25 moves into the sealing cylinder 26, squeezing the air inside the sealing cylinder 26 outwards. Since the ends of the elastic strips 27 are all inclined outwards from the sealing cylinder 26, the elastic strips 27 do not affect the airflow when the air inside the sealing cylinder 26 flows outwards, ensuring that the initial movement of the screening frame 11 is not obstructed. When the screening frame 11 reverses its movement and resets, the piston 25 moves outwards from the sealing cylinder 26. The air pressure inside the sealing cylinder 26 causes external air to rush in through the air holes 38. At this time, the elastic strips 27 are affected by the airflow, and their ends deform inwards from the sealing cylinder 26. When several elastic strips 27 deform simultaneously, the air holes 38 will be further blocked.Furthermore, the fixing ring 28 can prevent the end of the elastic strip 27 from entering the sealing cylinder 26. When air rushes into the sealing cylinder 26, the elastic strip 27 will remain deformed to hinder air entry, causing the screening frame 11 to experience resistance during the reset process, thus slowing down the reset speed. During the initial movement, the metal scraps in the screening frame 11 can quickly move towards the corresponding feed trough 20. However, the reset of the screening frame 11 is relatively slow, and the metal scraps have less inertia, so they will not reset synchronously with the screening frame 11 to the initial stage. This prevents the metal scraps from accumulating at one end of the screen plate 12 due to its inclined arrangement. After being screened by multiple screen plates 12 in the screening frame 11, the metal scraps enter the corresponding feed trough 20 according to their size and are collected by the corresponding feed hopper 39. The smallest metal scraps pass through all the screen plates 12 and finally fall into the collection hopper 19.

[0035] Several magnetic shafts 23 are rotatably installed inside the vortex separator 2. Each magnetic shaft 23 corresponds to a collecting hopper 19 and a discharging hopper 39, and they are arranged laterally according to magnetic field strength. Adjacent magnetic shafts 23 are fixedly connected. A third motor 40 for driving the magnetic shafts 23 is fixedly installed on the vortex separator 2. A drive shaft 22 is rotatably installed inside the vortex separator 2. A second conveyor belt 24 is installed between each magnetic shaft 23 and the drive shaft 22. Protective strips 6 for preventing metal debris from splashing are fixedly installed on both sides of the first conveyor belt 5 and on both sides of each second conveyor belt 24. Several discharge pipes 37 are fixedly installed inside the vortex separator 2. Each discharge pipe 37 is located above its corresponding second conveyor belt 24, and a flexible pipe is connected to the upper end of each discharge pipe 37. 21. The upper end of each flexible tube 21 is connected to the corresponding collecting hopper 19 and discharging hopper 39. A first partition plate 31 and a second partition plate 32 are fixedly installed inside the vortex separator 2. The first partition plate 31 and the inner wall of the vortex separator 2 form a second collecting hopper 29 for collecting non-ferrous metals. The second partition plate 32 and the inner wall of the vortex separator 2 form a third collecting hopper 30 for collecting non-ferrous metals. A guide seat 33 is fixedly installed inside the vortex separator 2. The upper end of the guide seat 33 is connected to both the second collecting hopper 29 and the third collecting hopper 30. The upper end of the guide seat 33 is set as an inclined surface and tilts towards the second collecting hopper 29. A magnetic roller 34 is rotatably installed inside the guide seat 33. A pulley 3 is fixedly installed at the end of the magnetic roller 34 and the end of one of the magnetic shafts 23. 5. A belt 36 is installed between the two pulleys 35 for transmission. Metal scraps in the collecting hopper 19 and the discharging hopper 39 are conveyed through the corresponding flexible pipe 21 and discharging pipe 37, and finally fall onto the corresponding second conveyor belt 24. At the same time, the third motor 40 starts, driving all the magnetic shafts 23 to rotate synchronously. Through the transmission shaft 22, the second conveyor belt 24 is driven to synchronously convey metal scraps of different sizes. When non-ferrous metal scraps pass through the magnetic shafts 23, they cut the magnetic induction lines and form eddy currents. They are then repelled by the magnetic field of the magnetic shafts 23 and fly out. After passing through the first partition plate 31 and the second partition plate 32, they finally fall into the third collecting hopper 30 for collection. Since the magnetic shafts 23 are arranged laterally according to the magnetic field strength, the smaller the metal... The stronger the magnetic field corresponding to the magnetic shaft 23, the more repulsive the smaller non-ferrous metal fragments will be, allowing them to fly into the third collection hopper 30. Larger non-ferrous metal fragments will not experience sufficient repulsive force to collide with the inner wall of the vortex separator 2 and splash. Non-ferrous metal fragments will not experience repulsive force when passing through the magnetic shaft 23 and will eventually fall into the second collection hopper 29. When non-ferrous metal fragments are repelled and fly out, they may collide with non-ferrous metal fragments that are not repelled. After the collision, the kinetic energy of the non-ferrous metal fragments decreases, and they may not be able to fly into the third collection hopper 30, but instead fall between the first partition plate 31 and the second partition plate 32. Simultaneously, the non-ferrous metal fragments that are collided will gain some kinetic energy.The metal fragments also fly out between the first partition plate 31 and the second partition plate 32. After colliding, the metal fragments fall between the first partition plate 31 and the second partition plate 32 and onto the guide seat 33. Since the upper end of the guide seat 33 is inclined towards the second collection hopper 29, both non-ferrous metal fragments and non-ferrous metal fragments will move into the second collection hopper 29 after the collision. At the same time, through the transmission of the pulley 35 and the belt 36, the magnetic shaft 23 will drive the magnetic roller 34 to rotate, performing secondary eddy current screening on the metal fragments that have collided, causing the non-ferrous metal fragments to move into the third collection hopper 30, thus improving the accuracy of non-ferrous metal screening.

[0036] Specifically, firstly, metal scraps are poured into the magnetic separator 1. Simultaneously, the first motor 4 starts, causing the first conveyor belt 5 to move the metal scraps towards the outlet. When the metal scraps pass the rotating shaft 3 at the outlet, the magnetic strip 7 inside the rotating shaft 3 generates a magnetic attraction force on the magnetic fragments in the metal scraps. This prevents the magnetic fragments from falling as they pass the outlet of the magnetic separator 1; instead, they remain adhered to the first conveyor belt 5 due to the magnetic attraction force. When the magnetic fragments move above the first collection hopper 8, they are scraped off by the scraper 9 and finally fall into the first collection hopper 8, completing the collection of magnetic fragments from the metal scraps. Non-magnetic metal scraps, after being conveyed by the first conveyor belt 5, pass through the guide plate 10 and fall into the vortex separator 2, and then enter the screening frame 11. At this time, the second motor 1... The piston 25 drives the cam 17 to rotate, pushing the screening frame 11 to slide back and forth. Metal scraps also slide continuously inside. Because the screen plates 12 are all inclined within the screening frame 11, the metal scraps are less likely to slide downwards into the feed trough 20 due to gravity, thus extending the screening time. During the initial sliding process of the screening frame 11, the piston 25 moves into the sealing cylinder 26, squeezing the air inside the sealing cylinder 26 outwards. The elastic strip 27 does not affect the airflow, ensuring that the initial movement of the screening frame 11 is not obstructed. When the screening frame 11 reverses and resets, external air rushes into the sealing cylinder 26 through the air hole 38. The elastic strip 27 is affected by the airflow, and its end deforms into the sealing cylinder 26. The fixing ring 28 prevents the end of the elastic strip 27 from entering the sealing cylinder 26. In the sealing cylinder 26, the elastic strip 27 will remain in a deformed state to prevent air from entering, causing resistance to the screen frame 11 during the reset process and slowing down the reset speed. During the initial movement, the metal scraps in the screen frame 11 can quickly move towards the corresponding feed chute 20. Since the screen frame 11 resets relatively slowly, the metal scraps experience less inertia and will not reset synchronously with the screen frame 11 to the initial stage, preventing metal scraps from accumulating at one end of the screen plate 12 due to its inclined arrangement. After being screened by multiple layers of screen plates 12 within the screen frame 11, the metal scraps enter the corresponding feed chute 20 according to size and are collected by the corresponding feed hopper 39. The smallest metal scraps pass through all the screen plates 12 and finally fall into the collecting hopper 19. The collecting hopper 19 and the feed hopper 39... Metal scraps are conveyed through corresponding flexible tubes 21 and discharge tubes 37, eventually falling onto the corresponding second conveyor belt 24. Simultaneously, the third motor 40 starts, driving all magnetic shafts 23 to rotate synchronously. Through the transmission shaft 22, the second conveyor belt 24 synchronously conveys metal scraps of different sizes. When non-ferrous metal scraps pass through the magnetic shaft 23, they are repelled by the magnetic field of the magnetic shaft 23 and fly out, passing through the first separator 31 and the second separator 32, and finally falling into the third collection hopper 30 for collection. Non-ferrous metal scraps are not repelled when passing through the magnetic shaft 23 and eventually fall into the second collection hopper 29. When non-ferrous metal scraps are repelled and fly out, they may collide with non-ferrous metal scraps that are not repelled.After the collision, the kinetic energy of the non-ferrous metal fragments decreases, and they may not be able to fly into the third collection hopper 30, but instead fall between the first partition plate 31 and the second partition plate 32. Simultaneously, the non-ferrous metal fragments impacted by the collision will gain some kinetic energy and also fly out between the first partition plate 31 and the second partition plate 32. After falling between the first partition plate 31 and the second partition plate 32, the metal fragments that collided will land on the guide seat 33. Both non-ferrous and non-ferrous metal fragments will move towards the second collection hopper 29. At the same time, the magnetic shaft 23 will drive the magnetic roller 34 to rotate, performing secondary eddy current screening on the metal fragments that collided, causing the non-ferrous metal fragments to move into the third collection hopper 30, thus improving the accuracy of non-ferrous metal screening.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal scrap sorting and recycling device for metal resource recycling, comprising a vortex separator (2), characterized in that: A screening frame (11) is slidably installed inside the vortex separator (2). Several screen plates (12) are fixedly installed inside the screening frame (11). The screen plates (12) are arranged vertically from large to small according to their screen hole diameters, and the length of the screen plate (12) corresponds to the size of its screen hole diameter. Each screen plate (12) is provided with a feeding trough (20) at its end. A collection hopper (19) and several feeding hoppers (39) are fixedly installed at the lower end of the screening frame (11). The feeding hoppers (39) correspond one-to-one with the feeding troughs (20) and are connected. The collection hoppers (19) are located below the bottommost screen plate (12). Several magnetic shafts (23) are rotatably installed inside the vortex separator (2). The magnetic shafts (23) correspond one-to-one with the collection hopper (19) and the discharge hopper (39) and are arranged laterally according to the magnetic field strength. Adjacent magnetic shafts (23) are fixedly connected. A third motor (40) for driving the magnetic shafts (23) to rotate is fixedly installed on the vortex separator (2). A transmission shaft (22) is rotatably installed inside the vortex separator (2). A second conveyor belt (24) is installed between each magnetic shaft (23) and the transmission shaft (22). A first partition plate (31) and a second partition plate (32) are fixedly installed inside the vortex separator (2). The first partition plate (31) and the inner wall of the vortex separator (2) form a second collection hopper (29) for collecting non-ferrous metals. The second partition plate (32) and the inner wall of the vortex separator (2) form a third collection hopper (30) for collecting non-ferrous metals. A second motor (16) is fixedly installed on the vortex separator (2), and a cam (17) is fixedly installed on the output end of the second motor (16). A limiting rod (18) that cooperates with the cam (17) is fixedly installed on the screening frame (11). Several springs (15) are fixedly installed between one end of the screening frame (11) and the inner wall of the vortex separator (2). Each screen plate (12) is inclined inside the screening frame (11). A sealing cylinder (26) is fixedly installed on the inner wall of the vortex separator (2), and a piston (25) that cooperates with the sealing cylinder (26) is fixedly installed on the screening frame (11). A number of air holes (38) are provided at one end of the sealing cylinder (26), and a number of elastic strips (27) for sealing the air holes (38) are fixedly installed in each air hole (38). The elastic strips (27) are arranged in a circle. Each of the elastic strips (27) is inclined and its ends are inclined outward from the sealing cylinder (26). Each of the air holes (38) is fixedly installed with a fixing ring (28) to prevent the elastic strip (27) from deforming into the sealing cylinder (26).

2. The metal scrap sorting and recycling device for metal resource recycling according to claim 1, characterized in that: A magnetic separator (1) is fixedly installed on the vortex separator (2). Two rotating shafts (3) are rotatably installed inside the magnetic separator (1). A first motor (4) for driving one of the rotating shafts (3) to rotate is fixedly installed on the outer wall of the magnetic separator (1). A first conveyor belt (5) is installed between the two rotating shafts (3). A first collection hopper (8) for collecting magnetic metal is fixedly installed at the lower end of the outlet of the magnetic separator (1). A magnetic strip (7) is fixedly installed inside the rotating shaft (3) above the first collection hopper (8).

3. A metal scrap sorting and recycling device for metal resource recycling according to claim 2, characterized in that: The upper end of the first collecting hopper (8) is fixedly equipped with a scraper (9) for scraping metal debris from the surface of the first conveyor belt (5), and the outlet of the magnetic separation bin (1) is fixedly equipped with a guide plate (10) for allowing metal debris to enter the screening frame (11).

4. A metal scrap sorting and recycling device for metal resource recycling according to claim 1, characterized in that: A guide seat (33) is fixedly installed inside the vortex separator (2). The upper end of the guide seat (33) is connected to the second collection hopper (29) and the third collection hopper (30). The upper end of the guide seat (33) is set as an inclined surface and tilted towards the second collection hopper (29). A magnetic roller (34) is rotatably installed inside the guide seat (33). A pulley (35) is fixedly installed at the end of the magnetic roller (34) and at the end of one of the magnetic shafts (23). A belt (36) is installed between the two pulleys (35) for transmission.

5. A metal scrap sorting and recycling device for metal resource recycling according to claim 1, characterized in that: The vortex separator (2) is fixedly installed with several feed pipes (37). Each feed pipe (37) is located above the corresponding second conveyor belt (24). Each feed pipe (37) is connected to a flexible pipe (21) at its upper end. Each flexible pipe (21) is connected to the corresponding collection hopper (19) and the feed hopper (39) at its upper end.

6. A metal scrap sorting and recycling device for metal resource recycling according to claim 2, characterized in that: Protective strips (6) for preventing metal debris from splashing are fixedly installed on both sides of the first conveyor belt (5) and on both sides of each second conveyor belt (24).

7. A metal scrap sorting and recycling device for metal resource recycling according to claim 1, characterized in that: Several rollers (13) are rotatably installed on both sides of the screening frame (11), and several guide strips (14) for limiting the rollers (13) are fixedly installed on both sides of the inner wall of the vortex separator (2).

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