Metal scrap classifying and recycling device for metal resource recycling

Abstract

The invention relates to the technical field of metal scrap classification and recovery, and discloses a metal scrap classification and recovery device for metal resource cyclic utilization, which comprises a vortex separation bin, a screening frame is slidably mounted in the vortex separation bin, a plurality of screening plates are fixedly mounted in the screening frame, and the screening plates are vertically arranged from large to small according to the diameters of screening holes of the screening plates; according to the metal scrap classifying and recycling device, a second motor is used for driving a cam to rotate, through limiting of the cam on a limiting rod and pushing of the elastic force of a spring, the metal scraps can be separated from the limiting rod, the metal scraps can be recycled, and the metal scraps can be recycled. The screening frame slides in a reciprocating mode, metal chippings continuously slide in the screening frame, the screening efficiency is improved, due to the fact that the screening plates are obliquely arranged in the screening frame, the metal chippings are not prone to sliding towards the discharging groove under the action of gravity, the screening time is prolonged, and the screening effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal debris classification and recycling, and particularly to a metal debris classification and recycling device for metal resource recycling. Background Art

[0002] A metal debris classification and recycling device is a device used to classify and recycle metal debris. The prior art usually classifies metal debris by magnetic separation and eddy current separation methods. The magnetic separation method uses magnetic differences to separate ferromagnetic metals. Ferromagnetic metals are adsorbed by an electromagnet to achieve separation from non-ferrous metals. The eddy current separation method is to make the internal magnetic poles form a high-frequency alternating magnetic field through the high-speed rotation of a magnetic roller. When non-ferrous metals pass through the magnetic field, eddy currents will be generated inside them due to electromagnetic induction, and then a magnetic field opposite to the original magnetic field direction will be generated. The non-ferrous metals are separated by the repulsive force. Through classification and recycling, this device enables metal debris to be reused, reduces the demand for new metal resources, and avoids environmental pollution caused by metal debris, which helps to protect the ecological environment and is widely used in industries such as metal processing, machinery manufacturing, and automobile maintenance;

[0003] During the process of classifying and recycling metal debris, it is difficult to unify the size of the metal debris. When non-ferrous metal debris is subjected to eddy current separation, larger non-ferrous metal debris cuts more magnetic induction lines, and the eddy currents generated inside it are correspondingly larger, resulting in a larger repulsive force for it to fly out. While smaller non-ferrous metal debris is subjected to a smaller repulsive force and may be difficult to be separated. If a magnetic roller with a stronger magnetic force is uniformly used, it may cause larger non-ferrous metal debris to be subjected to a stronger repulsive force and collide with the inner wall of the device, resulting in debris splashing and making it difficult to accurately collect them. Moreover, long-term collisions may aggravate the wear of the device and even cause damage to the equipment. For this reason, we propose a metal debris classification and recycling device for metal resource recycling. Summary of the Invention

[0004] The purpose of the present invention is to provide a metal debris classification and recycling device for metal resource recycling to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A metal debris classification and recycling device for metal resource recycling, including an eddy current separation bin, a screening frame is slidably installed in the eddy current separation bin, a plurality of sieve plates are fixedly installed in the screening frame, the sieve plates are vertically arranged according to the diameter of their sieve holes from large to small, and the length of the sieve plates corresponds to the size of the diameter of their sieve holes. A blanking groove is provided at each end of the sieve plate. An aggregate hopper and a plurality of blanking hoppers are fixedly installed at the lower end of the screening frame. The blanking hoppers correspond to and communicate with the blanking grooves one by one, and the aggregate hopper is located below the lowermost sieve plate;

[0006] Several magnetic shafts are rotatably installed in the vortex selection chamber, and the magnetic shafts correspond one-to-one to the collecting hopper and the lower hopper, and are arranged horizontally according to the magnetic field strength, and two adjacent magnetic shafts are fixedly connected. A third motor for driving the magnetic shafts to rotate is fixedly installed on the vortex selection chamber, and a transmission shaft is rotatably installed in the vortex selection chamber. A second conveyor belt is installed between each magnetic shaft and the transmission shaft. A first partition plate and a second partition plate are fixedly installed in the vortex selection chamber, and the first partition plate and the inner wall of the vortex selection chamber form a second collection bucket for collecting non-ferrous metals, and the second partition plate and the inner wall of the vortex selection chamber form a third collection bucket for collecting non-ferrous metals.

[0007] Preferably, a second motor is fixedly mounted on the vortex selection chamber, a cam is fixedly mounted on the output end of the second motor, a limiting rod cooperating with the cam is fixedly mounted on the screening frame, a plurality of springs are fixedly mounted between one end of the screening frame and the inner wall of the vortex selection chamber, and each of the screen plates is arranged at an angle in the screening frame.

[0008] Preferably, a sealing cylinder is fixedly installed on the inner wall of the vortex selection chamber, a piston matching the sealing cylinder is fixedly installed on the screening frame, a plurality of air holes are provided at one end of the sealing cylinder, and a plurality of elastic strips for sealing the air holes are fixedly installed in each of the air holes, and the elastic strips are arranged in a circle.

[0009] Preferably, each of the elastic strips is arranged at an angle, and its ends are inclined toward the outside of the sealing tube, and a fixing ring is fixedly installed in each of the air holes to prevent the elastic strip from deforming into the sealing tube.

[0010] Preferably, a magnetic separation chamber is fixedly installed on the vortex separation chamber, two rotating shafts are rotatably installed in 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 for transmission between the two rotating shafts, a first collecting bucket 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 collecting bucket.

[0011] Preferably, a scraper for scraping metal debris from the surface of the first conveyor belt is fixedly installed on 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 separation bin.

[0012] Preferably, a material guide seat is fixedly installed in the vortex selection chamber, and the upper end of the material guide seat is connected to the second collecting bucket and the third collecting bucket. The upper end of the material guide seat is set as an inclined surface and tilted toward the second collecting bucket. A magnetic roller is rotatably installed in the material guide seat, and pulleys are fixedly installed on the end of the magnetic roller and one of the ends of the magnetic shaft, and a belt is installed for transmission between the two pulleys.

[0013] Preferably, a plurality of blanking pipes are fixedly installed in the eddy separation bin, each blanking pipe is located above the corresponding second conveyor belt, a flexible pipe is connected to the upper end of each blanking pipe, and the upper end of each flexible pipe is connected to the corresponding aggregate hopper and blanking hopper.

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

[0015] Preferably, a plurality of roller shafts are rotatably installed on both sides of the screening frame, and a plurality of guiding strips for limiting the roller shafts are fixedly installed on the inner walls of both sides of the eddy separation bin.

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

[0017] 1. The present invention uses the second motor to drive the cam to rotate. Through the limitation of the limiting rod by the cam and the pushing of the spring force, the screening frame slides reciprocally, and the metal debris slides continuously inside it, improving the screening efficiency. And because the sieve plates are inclined in the screening frame, the metal debris is not easily slid down to the material chute by gravity, prolonging the screening time and improving the screening effect.

[0018] 2. The present invention adjusts the effective ventilation area of the air holes by using the elastic strips. When the piston moves into the sealing cylinder, the ends of the elastic strips incline towards the outside of the sealing cylinder, and the elastic strips do not affect the outward flow of air. When the piston moves out of the sealing cylinder, the elastic strips are affected by the air flow, and their ends will deform towards the inside of the sealing cylinder, hindering the inward flow of air. During the initial movement of the metal debris in the screening frame, it can quickly move towards the corresponding material chute, while the screening frame resets relatively slowly, and the metal debris is less affected by inertia and will not reset to the initial stage synchronously with the screening frame, preventing the metal debris from accumulating at one end of the sieve plate due to the inclined setting of the sieve plate.

[0019] 3. The present invention uses non-ferrous metal debris to fly out under the repulsive force when passing through the magnetic shaft and fall into the third collection hopper for collection. And the magnetic shafts are arranged horizontally according to the magnetic field intensity, so that even smaller non-ferrous metal debris can be subjected to sufficient repulsive force and fly into the third collection hopper, while the larger non-ferrous metal debris is not affected by too much repulsive force and will not collide with the inner wall of the eddy separation bin and splash.

[0020] 4. The present invention uses the first partition plate and the second partition plate to separate metal debris. After the non-ferrous metal debris and the non-non-ferrous metal debris collide, they will fall together between the first partition plate and the second partition plate and land on the material guiding seat. The non-non-ferrous metal debris will move along the material guiding seat into the second collection hopper. At the same time, the magnetic shaft will drive the magnetic roller to rotate, performing secondary eddy current screening on the collided metal debris, causing the non-ferrous metal debris to move into the third collection hopper, thereby improving the accuracy of non-ferrous metal screening.

[0021] 5. The present invention uses magnetic strips to generate magnetic suction on the magnetic debris in the metal debris, so that the magnetic debris will not fall when passing through the outlet of the magnetic separation bin, but will still adhere to the first conveyor belt under the magnetic suction and move away from the magnetic strip as it moves with the first conveyor belt. When the magnetic debris moves above the first collection hopper, the magnetic suction of the magnetic strip on it is relatively small, and at the same time, the magnetic debris will be scraped off by the scraper and finally fall into the first collection hopper to complete the collection of the magnetic debris in the metal debris. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0024] Figure 3 is a schematic diagram of the internal structure of the eddy current separation bin of the present invention;

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

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

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

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

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

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

[0031] In the figure: 1 - magnetic separation bin; 2 - vortex separation bin; 3 - rotating shaft; 4 - first motor; 5 - first conveyor belt; 6 - protective strip; 7 - magnetic strip; 8 - first collecting hopper; 9 - scraper; 10 - material guiding plate; 11 - screening frame; 12 - sieve plate; 13 - roller shaft; 14 - guiding strip; 15 - spring; 16 - second motor; 17 - cam; 18 - limiting rod; 19 - aggregate hopper; 20 - blanking chute; 21 - flexible pipe; 22 - transmission 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 partition plate; 32 - second partition plate; 33 - material guiding seat; 34 - magnetic roller; 35 - pulley; 36 - belt; 37 - blanking pipe; 38 - air hole; 39 - blanking hopper; 40 - third motor. Detailed implementation manner

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-9, the present invention provides a technical solution: a metal debris classification and recycling device for metal resource recycling, including a vortex separation bin 2, a magnetic separation bin 1 is fixedly installed on the vortex separation bin 2, two rotating shafts 3 are rotatably installed in the magnetic separation bin 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 separation bin 1, a first conveyor belt 5 is drivingly installed between the two rotating shafts 3, a first collecting hopper 8 for collecting magnetic metals is fixedly installed at the lower end of the outlet of the magnetic separation bin 1, a magnetic strip 7 is fixedly installed in the rotating shaft 3 corresponding to the upper part of the first collecting hopper 8, a scraper 9 for scraping the metal debris on the surface of the first conveyor belt 5 is fixedly installed at the upper end of the first collecting hopper 8, a guide plate 10 for allowing the metal debris to enter the screening frame ⅠⅠ is fixedly installed at the outlet of the magnetic separation bin 1. After the metal debris enters the magnetic separation bin 1, the first motor 4 is started, so that the first conveyor belt 5 drives the metal debris to move towards the outlet. When the metal debris passes through the rotating shaft 3 at the outlet, the magnetic strip 7 in the rotating shaft 3 will generate a magnetic attraction force on the magnetic debris in the metal debris, and the magnetic debris will not fall when passing through the outlet of the magnetic separation bin 1, but is still adhered to the first conveyor belt 5 by the magnetic attraction force and moves away from the magnetic strip 7 as the first conveyor belt 5 moves. When the magnetic debris moves above the first collecting hopper 8, the magnetic attraction force of the magnetic strip 7 on it is small, and at the same time, the magnetic debris will be scraped by the scraper 9 and finally fall into the first collecting hopper 8, completing the collection of the magnetic debris in the metal debris. The non-magnetic metal debris will pass through the guide plate 10 and fall into the vortex separation bin 2 after being conveyed by the first conveyor belt 5.

[0034] It should be noted that there may be some inaccuracies in the translation due to the possible unclear or incorrect original content in some parts. For example, the "screening frame ⅠⅠ" in the original text might be an incorrect expression. It is recommended to check and correct the original text for more accurate translation.A screening frame 11 is slidably installed in the vortex separation bin 2. A number of roller shafts 13 are rotatably installed on both sides of the screening frame 11. A number of guide bars 14 for limiting the roller shafts 13 are fixedly installed on the inner walls on both sides of the vortex separation bin 2. Through the limitation of the roller shafts 13 by the guide bars 14, the screening frame 11 can slide horizontally in the vortex separation bin 2, and the roller shafts 13 can reduce the friction during sliding. A number of sieve plates 12 are fixedly installed in the screening frame 11. The sieve plates 12 are vertically arranged in descending order of their sieve hole diameters, and the length of the sieve plates 12 corresponds to the size of their sieve hole diameters. A blanking groove 20 is provided at the end of each sieve plate 12. An aggregate hopper 19 and a number of blanking hoppers 39 are fixedly installed at the lower end of the screening frame 11. The blanking hoppers 39 correspond to and communicate with the blanking grooves 20 one by one. The aggregate hopper 19 is located below the lowermost sieve plate 12. A second motor 16 is fixedly installed on the vortex separation bin 2. A cam 17 is fixedly installed at 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. A number of springs 15 are fixedly installed between one end of the screening frame 11 and the inner wall of the vortex separation bin 2. Each sieve plate 12 is inclined in the screening frame 11. A sealing cylinder 26 is fixedly installed on the inner wall of the vortex separation bin 2. 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. A number of elastic strips 27 for blocking the air holes 38 are fixedly installed in each air hole 38. The elastic strips 27 are arranged in a circular pattern. Each elastic strip 27 is inclined, and its end is inclined towards the outside of the sealing cylinder 26. A fixing ring 28 for preventing the elastic strip 27 from deforming into the sealing cylinder 26 is fixedly installed in each air hole 38. After the magnetically separated metal debris enters the screening frame 11, the second motor 16 is started to drive the cam 17 to rotate. Through the limitation of the limiting rod 18 by the tip of the cam 17, the screening frame 11 will slide in the vortex separation bin 2, and the spring 15 will be compressed. After the tip of the cam 17 passes the limiting rod 18, the screening frame 11 will be reset by the elastic force of the spring 15. The screening frame 11 will slide back and forth, causing the metal debris to continuously slide inside it, improving the screening efficiency. And because the sieve plates 12 are all inclined in the screening frame 11, the metal debris is not easily slid down into the blanking groove 20 by gravity, prolonging the screening time and improving the screening effect. At the same time, during the initial sliding process of the screening frame 11, the piston 25 moves into the sealing cylinder 26, squeezing the air in the sealing cylinder 26 outwards. Since the ends of the elastic strips 27 are all inclined towards the outside of the sealing cylinder 26, the elastic strips 27 will not affect the air flow when the air in the sealing cylinder 26 flows outwards, so that the initial movement of the screening frame 11 will not be hindered. When the screening frame 11 moves in the reverse direction to reset, the piston 25 moves out of the sealing cylinder 26, and the air pressure in the sealing cylinder 26 causes the external air to rush in through the air holes 38. At this time, the elastic strips 27 are affected by the air flow, and their ends will deform into the sealing cylinder 26. When a number of elastic strips 27 deform synchronously, the air holes 38 will be further blocked.And the fixing ring 28 can prevent the end part of the elastic strip 27 from entering the sealing cylinder 26. When air surges into the sealing cylinder 26, the elastic strip 27 will remain deformed to block the air entry, so that the screening frame 11 is resisted during the reset process, delaying the reset speed. During the initial movement of the metal debris in the screening frame 11, it can quickly move towards the corresponding blanking chute 20. However, the screening frame 11 resets relatively slowly, and the metal debris has less inertia and will not reset to the initial stage synchronously with the screening frame 11, preventing the metal debris from accumulating at one end of the sieve plate 12 due to the inclined setting of the sieve plate 12. After being screened by multiple sieve plates 12 in the screening frame 11, the metal debris enters the corresponding blanking chute 20 according to size and is collected by the corresponding blanking hopper 39, while the metal debris with the smallest volume passes through all the sieve plates 12 and finally falls into the aggregate hopper 19.,

[0035] A number of magnetic shafts 23 are rotatably installed in the vortex separation bin 2. The magnetic shafts 23 correspond one by one to the aggregate hopper 19 and the blanking hopper 39, and are arranged horizontally according to the magnetic field intensity, and are fixedly connected between adjacent two magnetic shafts 23. A third motor 40 for driving the magnetic shafts 23 to rotate is fixedly installed on the vortex separation bin 2. A transmission shaft 22 is rotatably installed in the vortex separation bin 2. A second conveyor belt 24 is installed between each magnetic shaft 23 and the transmission shaft 22 for transmission. Protective strips 6 for preventing metal debris from splashing are fixedly installed on both sides of the first conveyor belt 5 and both sides of each second conveyor belt 24. A number of blanking pipes 37 are fixedly installed in the vortex separation bin 2, and each blanking pipe 37 is located above the corresponding second conveyor belt 24. The upper end of each blanking pipe 37 is communicated with a flexible pipe 21, and the upper end of each flexible pipe 21 is connected and communicated with the corresponding aggregate hopper 19 and the blanking hopper 39. A first partition plate 31 and a second partition plate 32 are fixedly installed in the vortex separation bin 2. A second collection hopper 29 for collecting non-ferrous metals is formed between the first partition plate 31 and the inner wall of the vortex separation bin 2. A third collection hopper 30 for collecting non-ferrous metals is formed between the second partition plate 32 and the inner wall of the vortex separation bin 2. A material guiding seat 33 is fixedly installed in the vortex separation bin 2. The upper end of the material guiding seat 33 is in a communicating state with both the second collection hopper 29 and the third collection hopper 30. The upper end of the material guiding seat 33 is set as an inclined surface and inclines towards the second collection hopper 29. A magnetic roller 34 is rotatably installed in the material guiding seat 33. Pulley 35 is fixedly installed at the end of both the magnetic roller 34 and one of the magnetic shafts 23, and a belt 36 is installed between the two pulleys 35 for transmission. The metal debris in the aggregate hopper 19 and the blanking hopper 39 are all conveyed through the corresponding flexible pipes 21 and blanking pipes 37, and finally fall onto the corresponding second conveyor belts 24. At the same time, the third motor 40 is started to drive all the magnetic shafts 23 to rotate synchronously. Through the transmission of the transmission shaft 22, the second conveyor belts 24 will be driven to convey metal debris of different sizes synchronously. When the non-ferrous metal debris passes through the magnetic shafts 23, it cuts the magnetic induction lines and forms eddy currents, and will be repelled by the magnetic field of the magnetic shafts 23 and fly out, and pass through the first partition plate 31 and the second partition plate 32, and finally fall into the third collection hopper 30 to be collected. And because the magnetic shafts 23 are arranged horizontally according to the magnetic field intensity, the smaller the metal debris, the stronger the magnetic field of the corresponding magnetic shaft 23, so that the smaller non-ferrous metal debris can also be subjected to sufficient repulsive force and fly into the third collection hopper 30. The repulsive force on the larger non-ferrous metal debris is not too large, and it will not cause the larger non-ferrous metal debris to collide with the inner wall of the vortex separation bin 2 and splash. When the non-ferrous metal debris passes through the magnetic shafts 23, it will not be repelled, and finally will fall into the second collection hopper 29. When the non-ferrous metal debris is repelled and flies out, it may collide with the non-ferrous metal debris that is not repelled. After the collision, the kinetic energy of the non-ferrous metal debris decreases, and it may not be able to fly into the third collection hopper 30, but fall between the first partition plate 31 and the second partition plate 32. At the same time, the non-ferrous metal debris that is collided will receive a certain amount of kinetic energy.It also flies out between the first partition plate 31 and the second partition plate 32. After the collided metal debris falls between the first partition plate 31 and the second partition plate 32, it will fall onto the material guide seat 33. Since the upper end inclined surface of the material guide seat 33 inclines towards the second collection hopper 29, both the collided non-ferrous metal debris and non-ferrous metal debris will move towards the second collection hopper 29. 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, and perform secondary eddy current screening on the collided metal debris, so that the non-ferrous metal debris moves towards the third collection hopper 30, improving the accuracy of non-ferrous metal screening.

[0036] Specifically, first, pour the metal scraps into the magnetic separation bin 1. At the same time, start the first motor 4 so that the first conveyor belt 5 drives the metal scraps to move towards the outlet. When the metal scraps pass through 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, and the magnetic scraps will not fall when passing through the outlet of the magnetic separation bin 1, but will still adhere to the first conveyor belt 5 under the magnetic attraction force. When the magnetic scraps move above the first collection hopper 8, the magnetic scraps will be scraped off by the scraper 9 and finally fall into the first collection hopper 8, completing the collection of the magnetic scraps in the metal scraps. After the non-magnetic metal scraps are conveyed by the first conveyor belt 5, they will pass through the guide plate 10 and fall into the vortex separation bin 2 and enter the screening frame 11. At this time, the second motor 16 drives the cam 17 to rotate, pushing the screening frame 11 to slide reciprocally, and the metal scraps also slide continuously inside it. Since the sieve plates 12 in the screening frame 11 are all inclined, the metal scraps are not easily slid down to the material chute 20 by gravity, 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 air flow, so the screening frame 11 will not be hindered during the initial movement. When the screening frame 11 moves in the reverse direction to reset, the external air rushes into the sealing cylinder 26 through the air holes 38. Affected by the air flow, the end of the elastic strip 27 will deform towards the inside of the sealing cylinder 26, and the fixing ring 28 can prevent the end of the elastic strip 27 from entering the sealing cylinder 26. The elastic strip 27 will maintain the deformed state to hinder the air from entering, so that the screening frame 11 is resisted during the reset process, delaying the reset speed. During the initial movement of the metal scraps in the screening frame 11, they can quickly move towards the corresponding material chute 20, while the screening frame 11 resets relatively slowly, and the metal scraps are less affected by inertia and will not reset to the initial stage synchronously with the screening frame 11, preventing the metal scraps from accumulating at one end of the sieve plate 12 due to the inclined setting of the sieve plate 12. After being screened by the multi-layer sieve plates 12 in the screening frame 11, the metal scraps enter the corresponding material chutes 20 according to their sizes and are collected by the corresponding material hoppers 39. The metal scraps with the smallest volume pass through all the sieve plates 12 and finally fall into the aggregate hopper 19. The metal scraps in the aggregate hopper 19 and the material hoppers 39 are all conveyed through the corresponding flexible pipes 21 and material pipes 37 and finally fall onto the corresponding second conveyor belt 24. At the same time, the third motor 40 is started to drive all the magnetic shafts 23 to rotate synchronously. Through the transmission of the transmission shaft 22, the second conveyor belt 24 will be driven to convey the metal scraps of different sizes synchronously. When the non-ferrous metal scraps pass through the magnetic shafts 23, they will be repelled by the magnetic field of the magnetic shafts 23 and fly out, and pass through the first partition plate 31 and the second partition plate 32, and finally fall into the third collection hopper 30 to be collected. When the non-non-ferrous metal scraps pass through the magnetic shafts 23, they will not be repelled and finally fall into the second collection hopper 29. When the non-ferrous metal scraps are repelled and fly out, they may collide with the non-non-ferrous metal scraps that are not repelled.After a collision occurs, the kinetic energy of the non-ferrous metal debris decreases, and it may not be able to fly into the third collection hopper 30, but instead falls between the first partition plate 31 and the second partition plate 32. At the same time, the non-ferrous metal debris that has been collided will receive a certain amount of kinetic energy and also fly out between the first partition plate 31 and the second partition plate 32. After the collided metal debris falls between the first partition plate 31 and the second partition plate 32, it will fall onto the material guiding seat 33. Both the non-ferrous metal debris and the non-ferrous metal debris will move towards the second collection hopper 29. At the same time, the magnetic axis 23 will drive the magnetic roller 34 to rotate, and perform secondary eddy current screening on the collided metal debris, so that the non-ferrous metal debris moves into the third collection hopper 30, improving the accuracy of non-ferrous metal screening.

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

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

Claims

1. A metal debris classification and recycling device for metal resource recycling, including a vortex separation bin (2), characterized in that: A screening frame (11) is slidably installed in the eddy separation bin (2). A plurality of sieve plates (12) are fixedly installed in the screening frame (11). The sieve plates (12) are vertically arranged in descending order of the diameter of their sieve holes, and the length of each sieve plate (12) corresponds to the size of the diameter of its sieve hole. A blanking groove (20) is arranged at the end of each sieve plate (12). An aggregate hopper (19) and a plurality of blanking hoppers (39) are fixedly installed at the lower end of the screening frame (11). The blanking hoppers (39) correspond to and communicate with the blanking grooves (20) one by one. The aggregate hopper (19) is located below the lowermost sieve plate (12). A plurality of magnetic shafts (23) are rotatably installed in the eddy separation bin (2). The magnetic shafts (23) correspond to the aggregate hopper (19) and the blanking hoppers (39) one by one, and are horizontally arranged according to the magnetic field intensity. Adjacent two magnetic shafts (23) are fixedly connected to each other. A third motor (40) for driving the magnetic shafts (23) to rotate is fixedly installed on the eddy separation bin (2). A transmission shaft (22) is rotatably installed in the eddy separation bin (2). A second conveyor belt (24) is installed between each magnetic shaft (23) and the transmission shaft (22) for transmission. A first partition plate (31) and a second partition plate (32) are fixedly installed in the eddy separation bin (2). A second collection hopper (29) for collecting non-ferrous metals is formed between the first partition plate (31) and the inner wall of the eddy separation bin (2). A third collection hopper (30) for collecting non-ferrous metals is formed between the second partition plate (32) and the inner wall of the eddy separation bin (2).

2. The metal chip classification and recycling device for metal resource recycling according to claim 1, characterized in that: A second motor (16) is fixedly installed on the eddy separation bin (2). A cam (17) is fixedly installed at the output end of the second motor (16). A limiting rod (18) cooperating with the cam (17) is fixedly installed on the screening frame (11). A plurality of springs (15) are fixedly installed between one end of the screening frame (11) and the inner wall of the eddy separation bin (2). Each sieve plate (12) is inclined in the screening frame (11).

3. The metal debris classification and recycling device for metal resource recycling according to claim 2, wherein: A sealing cylinder (26) is fixedly installed on the inner wall of the eddy separation bin (2). A piston (25) cooperating with the sealing cylinder (26) is fixedly installed on the screening frame (11). A plurality of air holes (38) are arranged at one end of the sealing cylinder (26). A plurality of elastic strips (27) for blocking the air holes (38) are fixedly installed in each air hole (38). The elastic strips (27) are arranged in a circular pattern.

4. The metal scrap sorting and recycling device for metal resource recycling according to claim 3, characterized in that: Each elastic strip (27) is inclined, and its end is inclined towards the outside of the sealing cylinder (26). A fixing ring (28) for preventing the elastic strip (27) from deforming into the sealing cylinder (26) is fixedly installed in each air hole (38).

5. The metal debris sorting and recycling device for metal resource recycling according to claim 1, characterized in that: A magnetic separation bin (1) is fixedly installed on the vortex separation bin (2). Two rotating shafts (3) are rotatably installed in the magnetic separation bin (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 separation bin (1). A first conveyor belt (5) is drivingly installed between the two rotating shafts (3). A first collecting hopper (8) for collecting magnetic metals is fixedly installed at the lower end of the outlet of the magnetic separation bin (1). A magnetic strip (7) is fixedly installed in the rotating shaft (3) corresponding to the upper part of the first collecting hopper (8).

6. The metal debris classification and recycling device for metal resource recycling according to claim 5, characterized in that: A scraper (9) for scraping metal debris on the surface of the first conveyor belt (5) is fixedly installed at the upper end of the first collecting hopper (8). A guide plate (10) for enabling the metal debris to enter the screening frame (11) is fixedly installed at the outlet of the magnetic separation bin (1).

7. 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 in the vortex separation bin (2). The upper end of the guide seat (33) is in communication with both the second collecting hopper (29) and the third collecting hopper (30). The upper end of the guide seat (33) is arranged as an inclined surface and is inclined towards the second collecting hopper (29). A magnetic roller (34) is rotatably installed in the guide seat (33). Pulley wheels (35) are fixedly installed at the ends of the magnetic roller (34) and one of the magnetic shafts (23). A belt (36) is drivingly installed between the two pulley wheels (35).

8. The metal chip classification and recycling device for metal resource recycling according to claim 1, characterized in that: A number of blanking pipes (37) are fixedly installed in the vortex separation bin (2). Each blanking pipe (37) is located above the corresponding second conveyor belt (24). The upper end of each blanking pipe (37) is communicated with a flexible pipe (21). The upper end of each flexible pipe (21) is communicated with the corresponding aggregate hopper (19) and blanking hopper (39).

9. The metal debris classification and recycling device for metal resource recycling according to claim 5, wherein: Protective strips (6) for preventing metal debris from splashing are fixedly installed on both sides of the first conveyor belt (5) and both sides of each second conveyor belt (24).

10. A metal debris classification and recycling device for metal resource recycling according to claim 1, characterized in that: A number of roller shafts (13) are rotatably installed on both sides of the screening frame (11). A number of guide strips (14) for limiting the roller shafts (13) are fixedly installed on both inner walls of the vortex separation bin (2).

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