A metal scrap recycling screening device

Abstract

The application relates to the technical field of metal waste recycling, in particular to a screening device for metal waste recycling, which comprises a screening main body, a multistage separation assembly and an automatic classification and collection assembly. The multistage separation assembly realizes efficient separation through a cyclone separation cavity, a vibrating screen, an eddy current sorting disc and an eddy current inductor, can remove impurities and distinguish ferromagnetic and non-ferromagnetic metals; the automatic classification and collection assembly utilizes a pneumatic push rod, a classification hopper, a sensor module and a conveying belt to complete automatic classification and collection of the metals. The application can improve screening efficiency and accuracy, reduce manual intervention, enhance equipment service life, effectively solve the limitation of single metal type separation in the prior art and is suitable for automatic recycling and treatment of various metal wastes.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection and resource recycling equipment technology, specifically a metal waste recycling and screening device. Background Technology

[0002] With the development of the waste recycling industry, various metal scrap screening devices have been gradually applied in industrial production. However, these devices still have some problems in practical use. For example, existing equipment is still insufficient in terms of separation efficiency between metals and non-metals, degree of automation, and adaptability to complex waste mixtures. These problems lead to low efficiency, frequent manual intervention, and resource waste in the metal scrap recycling process.

[0003] A search revealed a novel material screening device for waste recycling, publication number CN114472179B, published on May 31, 2024. This design utilizes a ring-shaped electromagnet within a tank to adsorb and separate metallic materials. When the electromagnet power is turned off, the adsorbed metallic materials fall off, completing the screening process. However, this design has the following shortcomings: First, it relies on a single electromagnet adsorption method, making it only suitable for recycling ferromagnetic metals and ineffective for separating non-ferromagnetic metals (such as copper and aluminum). Second, the device lacks a pretreatment function for waste mixtures; if the waste contains large or complex-shaped non-metallic impurities, it may hinder the adsorption of metallic materials, thus reducing screening efficiency. Furthermore, the device does not provide an automated waste sorting process, requiring manual intervention for subsequent collection, which fails to meet the demands of modern industry for high-efficiency automation.

[0004] A search revealed a waste sorting and screening device with publication number CN115007597B, published on March 8, 2024. This design uses an electrically conductive magnetic frame to generate magnetic attraction, positioning and adsorbing ferrous waste during waste turning. While this device can solve the problems of high labor intensity and low safety associated with traditional manual visual sorting, it still has significant drawbacks: firstly, the device is primarily designed for ferrous waste recycling, with limited ability to separate other types of metals (such as stainless steel and aluminum alloys); secondly, its complex structure involves the coordinated operation of multiple mechanical components, increasing equipment maintenance costs and the risk of failure. Furthermore, the design does not adequately consider the impact of moisture, oil, or other contaminants in the waste mixture on the magnetic attraction effect, potentially leading to decreased screening accuracy and difficulty in guaranteeing a high metal recovery rate.

[0005] The aforementioned problems indicate that existing metal scrap screening devices still have significant shortcomings in terms of metal type coverage, automation level, and adaptability to complex waste mixtures. Therefore, this invention provides a metal scrap recycling screening device designed to overcome these deficiencies. Through multi-stage screening, automated control, and efficient separation of various metal materials, it improves the overall efficiency and accuracy of metal scrap recycling, meeting the demands of modern industry for intelligent and efficient waste recycling equipment. Utility Model Content

[0006] This utility model relates to a screening device for recycling metal waste, including a screening body, a multi-stage separation component, and an automatic sorting and collection component. The screening body is equipped with a multi-stage separation assembly, and an automatic sorting and collection assembly is installed on the top outer wall of the screening body. The multi-stage separation assembly includes a cyclone separation chamber, a vibrating screen, an eddy current separation disk, a guide plate, an eddy current sensor, a drive motor, a transmission shaft, and a separation chamber. Cyclone separation chambers are symmetrically arranged inside the screening body. A vibrating screen is fixedly connected to the bottom of the cyclone separation chamber. One side of the outer wall of the vibrating screen is fixed to the inner wall of the screening body by bolts. An eddy current separation disk is installed at the top of the cyclone separation chamber. A guide plate is welded to one side of the outer wall of the eddy current separation disk. The other end of the guide plate extends to the inner wall of the screening body and is slidably connected to it. An eddy current sensor is embedded in the center of the eddy current separation disk. A drive motor is fixed to the bottom inner wall of the screening body. A transmission shaft is welded to the top of the output shaft of the drive motor. A separation chamber is sleeved on the outer wall of the transmission shaft, and the bottom of the separation chamber is rotatably connected to the inner wall of the screening body by a bearing.

[0007] Preferably, a support column is fixedly connected to the top of the screening body, a guide rail is welded to the top of the support column, a slider is slidably connected to the inner wall of the guide rail, a telescopic rod is fixedly connected to one outer wall of the slider, a pusher plate is installed at the other end of the telescopic rod, and the bottom outer wall of the pusher plate is in contact with the top outer wall of the eddy current separation disk.

[0008] Preferably, the automatic sorting and collection assembly includes pneumatic push rods, sorting hoppers, conveyor belts, collection boxes, and sensor modules. Pneumatic push rods are symmetrically installed on the top outer wall of the screening body. A sorting hopper is fixedly connected to the outer wall of one end of the pneumatic push rod. A conveyor belt is installed on the bottom outer wall of the sorting hopper. Baffles are distributed and fixedly connected to one side of the outer wall of the conveyor belt. A collection box is provided below the other end of the conveyor belt. A sensor module is embedded in the outer wall of one side of the sorting hopper.

[0009] Preferably, a feeding channel is provided on one side of the screening body, and a discharge channel is provided on the other side of the screening body. The discharge channel is located above the feeding channel. A guide plate is welded to the bottom outer wall of the feeding channel, and the other end of the guide plate extends to the top opening of the cyclone separation chamber.

[0010] Preferably, a support frame is symmetrically fixed to one side of the outer wall of the screening body, a control panel is installed at one end of the support frame, and operation buttons are distributed on one side of the outer wall of the control panel.

[0011] Preferably, the outer wall of the vortex sorting disk is provided with a plurality of sorting grooves, the inner wall of the sorting grooves is coated with a wear-resistant coating, and the width of the sorting grooves gradually increases from the center to the outside.

[0012] Preferably, a flow guide groove is distributed on one side of the outer wall of the flow guide plate, and a flow guide plate is welded on the bottom outer wall of the flow guide groove, and the flow guide plate is arc-shaped.

[0013] The technical advantages of this invention are as follows: By setting up multi-stage separation components, the waste mixture is initially separated using a cyclone separation chamber and a vibrating screen to remove larger non-metallic impurities. Simultaneously, the eddy current separation disc combined with an eddy current sensor achieves efficient separation of ferromagnetic and non-ferromagnetic metals, overcoming the limitation of existing technologies that only work with a single metal type. An automatic sorting and collection component is installed, using pneumatic pushers and sorting hoppers in conjunction with a sensor module to automatically sort the separated metal materials. Different types of metals are then conveyed into their corresponding collection boxes via a conveyor belt, reducing manual intervention and increasing automation. Optimizing the structural design of the eddy current separation disc, using sorting troughs and wear-resistant coatings improves separation accuracy and extends equipment lifespan. Furthermore, the guide troughs and guide plates on the guide plate effectively guide the waste flow, preventing blockages or jamming, thereby improving overall screening efficiency and accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the outer structure of the slider in this utility model; Figure 3 This is a schematic diagram of the outer structure of the support frame in this utility model; Figure 4 This is a schematic diagram of the outer structure of the pneumatic push rod in this utility model.

[0015] The attached diagram is labeled as follows: 1. Screening body; 2. Cyclone separation chamber; 3. Vibrating screen; 4. Eddy current sorting disc; 5. Guide plate; 6. Eddy current sensor; 7. Drive motor; 8. Transmission shaft; 9. Separation chamber; 10. Support column; 11. Guide rail; 12. Slider; 13. Telescopic rod; 14. Pusher plate; 15. Pneumatic push rod; 16. Sorting hopper; 17. Conveyor belt; 18. Collection box; 19. Sensor module; 20. Feed channel; 21. Discharge channel; 22. Guide plate; 23. Support frame; 24. Control panel; 25. Sorting trough; 26. Diversion trough; 27. Diversion plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Specific implementation examples are given below.

[0018] This utility model relates to a screening device for recycling metal scrap, the overall structure of which is as follows: Figure 1 As shown. The screening body 1 is the core load-bearing component of the entire device, and its interior is equipped with multi-stage separation components and 25 The automatic sorting and collection assembly separately realizes the functions of separating and sorting waste. The multi-stage separation assembly includes a cyclone separation chamber 2, a vibrating screen 3, an eddy current sorting disc 4, a guide plate 5, an eddy current sensor 6, a drive motor 7, a transmission shaft 8, and a separation chamber 9. These components are mechanically connected and functionally coordinated to complete the multi-stage separation process of waste. The automatic sorting and collection assembly includes a pneumatic push rod 15, a sorting hopper 16, a conveyor belt 17, a collection box 18, and a sensor module 19. These components work together to achieve automated sorting and collection. The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] The screening body 1 is a hollow rectangular box structure with a feeding channel 20 on one side and a discharging channel 21 on the other side, with the discharging channel 21 located above the feeding channel 20. A guide plate 22 is welded to the bottom outer wall of the feeding channel 20, with one end extending to the top opening of the cyclone separation chamber 2, forming a preliminary path for the waste material. The cyclone separation chamber 2 is symmetrically arranged inside the screening body 1, and a vibrating screen 3 is fixedly connected to its bottom. One outer wall of the vibrating screen 3 is bolted to the inner wall of the screening body 1 to ensure stability during operation. The function of the vibrating screen 3 is to filter out larger non-metallic impurities in the waste through high-frequency vibration and send the remaining material to the next stage of processing.

[0020] A vortex separating disk 4 is installed at the top of the cyclone separation chamber 2. A guide plate 5 is welded to one side of the outer wall of the vortex separating disk 4, and the other end of the guide plate 5 extends to the inner wall of the screening body 1 and slides thereto to facilitate the flow guidance of materials. An eddy current sensor 6 is embedded in the center of the vortex separating disk 4. The eddy current sensor 6 distinguishes between ferromagnetic and non-ferromagnetic metals by detecting the electromagnetic properties of the metallic materials. A drive motor 7 is fixed to the inner wall of the bottom end of the screening body 1. A transmission shaft 8 is welded to the top of the output shaft of the drive motor 7. A separation chamber 9 is sleeved on the outer wall of the transmission shaft 8. The bottom end of the separation chamber 9 is rotatably connected to the inner wall of the screening body 1 through a bearing, thereby realizing the rotational movement of the separation chamber 9. The rotation of the separation chamber 9 drives the vortex separating disk 4 to rotate synchronously, so that the materials are efficiently separated on the vortex separating disk 4.

[0021] To further improve the separation efficiency of waste materials, support columns 10 are fixedly attached to the top of the screening body 1. Guide rails 11 are welded to the top of the support columns 10, and sliders 12 are slidably connected to the inner wall of the guide rails 11. A telescopic rod 13 is fixedly attached to one outer wall of the slider 12, and a pusher plate 14 is installed at the other end of the telescopic rod 13. The bottom outer wall of the pusher plate 14 is in contact with the top outer wall of the vortex separation disk 4. The pusher plate 14 spreads the material on the vortex separation disk 4 evenly through the reciprocating motion of the telescopic rod 13, avoiding material accumulation that affects the separation effect. At the same time, the sliding design of the slider 12 on the guide rails 11 allows the pusher plate 14 to cover the entire surface of the vortex separation disk 4, ensuring uniform material distribution.

[0022] The structure of the automatic sorting and collection component is as follows: Figure 3As shown, pneumatic pushers 15 are symmetrically installed on the top outer wall of the screening body 1, and a sorting hopper 16 is fixedly connected to the outer wall of one end of the pneumatic pusher 15. A conveyor belt 17 is installed on the bottom outer wall of the sorting hopper 16, and baffles are fixedly distributed on one side of the outer wall of the conveyor belt 17 to prevent materials from falling during the conveying process. A collection box 18 is set below the other end of the conveyor belt 17 to receive the sorted metal materials. A sensor module 19 is embedded in one side of the outer wall of the sorting hopper 16. The sensor module 19 controls the movement of the pneumatic pushers 15 by detecting the material and shape information of the materials, thereby achieving accurate sorting of different types of metal materials.

[0023] In actual operation, waste material enters the screening body 1 through the feed channel 20 and enters the cyclone separation chamber 2 under the guidance of the guide plate 22. The cyclone separation chamber 2 uses centrifugal force to initially separate the material, removing larger non-metallic impurities. Subsequently, the material falls into the vibrating screen 3, which further filters out fine non-metallic particles through high-frequency vibration. The remaining material enters the eddy current separation disc 4. The eddy current separation disc 4 rotates at high speed under the drive of the drive motor 7, and the eddy current sensor 6 detects the electromagnetic properties of the material in real time, separating ferromagnetic and non-ferromagnetic metals. The guide plate 5 has a flow channel 26 and a flow guide plate 27 (such as...). Figure 2 (As shown) It serves to guide the flow of materials and prevent blockages or material jams.

[0024] The separated metal materials are evenly spread out by the pusher plate 14 and enter the sorting hopper 16 through the guide plate 5. After the sensor module 19 detects the material information, it controls the pneumatic pusher 15 to push different types of metal materials onto the corresponding conveyor belts 17. The conveyor belts 17 transport the materials to the corresponding collection boxes 18, completing the automatic sorting and collection process.

[0025] In addition, multiple sorting grooves 25 are distributed on the outer wall of the vortex sorting disk 4. The inner wall of the sorting grooves 25 is coated with a wear-resistant coating, and the width of the sorting grooves 25 gradually increases from the center outward. This design not only improves the sorting accuracy but also extends the service life of the vortex sorting disk 4. The flow channel 26 and arc-shaped flow guide plate 27 on the guide plate 5 further optimize the flow path of the material, reduce the resistance of the material during the flow process, and improve the overall screening efficiency. A support frame 23 is symmetrically fixed to one side of the outer wall of the screening body 1. A control panel 24 is installed at one end of the support frame 23. Operation buttons are distributed on one side of the outer wall of the control panel 24 for controlling the operation status of the entire device.

[0026] The above description constitutes the specific implementation of this utility model. Through the aforementioned structural design and operating principle, efficient separation and automated classification and collection of metal waste are achieved, meeting practical application needs. To better enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model is further explained below in conjunction with a specific application scenario.

[0027] In waste recycling plants, metallic scrap and non-metallic impurities accumulate together, requiring efficient separation and sorting through screening devices. First, operators pour the waste material into the feed channel 20. Under gravity, the waste slides along the guide plate 22 into the cyclone separator 2. At this point, the cyclone separator 2 uses centrifugal force to perform initial separation. Larger non-metallic impurities, being lighter, are thrown to the edge of the chamber and discharged through the discharge channel 21, while the remaining material falls into the vibrating screen 3. The vibrating screen 3 further filters out fine non-metallic particles through high-frequency vibration, ensuring that only metal and a small amount of difficult-to-separate impurities remain for the next stage.

[0028] Subsequently, the pre-screened materials enter the eddy current sorting disc 4. After the drive motor 7 starts, the transmission shaft 8 drives the separation chamber 9 to rotate, thereby driving the eddy current sorting disc 4 to rotate at high speed. The eddy current sensor 6 detects the electromagnetic properties of the materials in real time. Ferromagnetic metals are adsorbed onto the inner wall of the sorting tank 25 due to the strong eddy current effect, while non-ferromagnetic metals such as copper and aluminum slide to the outside of the sorting tank 25 due to the weaker eddy current effect. The design of the sorting tank 25, with its width gradually increasing from the center to the outside, effectively reduces mutual interference between materials. At the same time, the wear-resistant coating on its inner wall reduces the risk of wear during long-term operation and ensures sorting accuracy.

[0029] To prevent material buildup on the vortex sorting disc 4, which would reduce separation efficiency, the pusher plate 14 reciprocates along the guide rail 11 under the drive of the telescopic rod 13, spreading the material evenly. The sliding design of the slider 12 ensures that the pusher plate 14 can cover the entire surface of the vortex sorting disc 4, thereby optimizing material distribution. The guide groove 26 and the arc-shaped guide plate 27 on the guide plate 5 further guide the material flow, preventing blockages or jamming, and ensuring that the material smoothly enters the sorting hopper 16.

[0030] Once the material enters the sorting hopper 16, the sensor module 19 controls the movement of the pneumatic pusher 15 by detecting the material's material and shape information. For example, when the sensor module 19 detects ferromagnetic metal, the pneumatic pusher 15 adjusts the sorting hopper 16 to the corresponding position, pushing the ferromagnetic metal onto the conveyor belt 17; while non-ferromagnetic metal is sent to different collection boxes 18 via a different conveying path. The baffles on both sides of the conveyor belt 17 prevent material from falling during transportation, ensuring the stability of the sorting process.

[0031] In addition, the operation buttons on the control panel 24 allow operators to adjust the equipment's operating status according to actual needs, such as adjusting the frequency of the vibrating screen 3, the speed of the drive motor 7, or the pushing force of the pneumatic push rod 15. The support frame 23 provides stable mechanical support for the entire device, ensuring the equipment maintains stability and reliability during long-term operation.

[0032] Through the above steps, this invention achieves multi-stage separation and automated sorting and collection of metal waste. The combination of the cyclone separation chamber 2 and the vibrating screen 3 effectively removes non-metallic impurities from the waste, while the eddy current sorting disk 4, combined with the eddy current sensor 6, enables precise differentiation between ferromagnetic and non-ferromagnetic metals. The automatic sorting and collection components significantly reduce manual intervention and improve overall work efficiency. This device demonstrates excellent adaptability and accuracy in handling complex waste mixtures, meeting the demands of the modern waste recycling field for efficient and intelligent solutions.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A screening device for recycling metal scrap, characterized in that, The system includes a screening body (1), a multi-stage separation assembly, and an automatic sorting and collection assembly. The screening body (1) contains the multi-stage separation assembly, and the automatic sorting and collection assembly is installed on the top outer wall of the screening body (1). The multi-stage separation assembly includes a cyclone separation chamber (2), a vibrating screen (3), an eddy current sorting disc (4), a guide plate (5), an eddy current sensor (6), a drive motor (7), a transmission shaft (8), and a separation chamber (9). The screening body (1) contains symmetrically arranged cyclone separation chambers (2). The bottom end of the cyclone separation chamber (2) is fixedly connected to the vibrating screen (3), and one side of the outer wall of the vibrating screen (3) is bolted to the screening body. On the inner wall of the vortex separation chamber (2), a vortex separation disk (4) is installed at the top of the vortex separation chamber (2). A guide plate (5) is welded to one side of the outer wall of the vortex separation disk (4). The other end of the guide plate (5) extends to the inner wall of the screening body (1) and is slidably connected to it. An eddy current sensor (6) is embedded in the center of the vortex separation disk (4). A drive motor (7) is fixed to the inner wall of the bottom end of the screening body (1). A transmission shaft (8) is welded to the top of the output shaft of the drive motor (7). A separation chamber (9) is sleeved on the outer wall of the transmission shaft (8). The bottom end of the separation chamber (9) is rotatably connected to the inner wall of the screening body (1) through a bearing.

2. The metal scrap recycling and screening device according to claim 1, characterized in that, The top of the screening body (1) is fixedly connected to a support column (10), and the top of the support column (10) is welded to a guide rail (11). The inner wall of the guide rail (11) is slidably connected to a slider (12). One side of the outer wall of the slider (12) is fixedly connected to a telescopic rod (13). The other end of the telescopic rod (13) is equipped with a pusher plate (14). The bottom outer wall of the pusher plate (14) is in contact with the top outer wall of the vortex sorting disk (4).

3. The metal scrap recycling and screening device according to claim 1, characterized in that, The automatic sorting and collection assembly includes a pneumatic push rod (15), a sorting hopper (16), a conveyor belt (17), a collection box (18), and a sensor module (19). The pneumatic push rod (15) is symmetrically installed on the top outer wall of the screening body (1). The sorting hopper (16) is fixed to one end of the pneumatic push rod (15). The conveyor belt (17) is installed on the bottom outer wall of the sorting hopper (16). Baffles are fixed to one side of the outer wall of the conveyor belt (17). The collection box (18) is located below the other end of the conveyor belt (17). The sensor module (19) is embedded in one side of the outer wall of the sorting hopper (16).

4. The metal scrap recycling and screening device according to claim 1, characterized in that, The screening body (1) has a feeding channel (20) on one side and a discharge channel (21) on the other side. The discharge channel (21) is located above the feeding channel (20). A guide plate (22) is welded to the bottom outer wall of the feeding channel (20). The other end of the guide plate (22) extends to the top opening of the cyclone separation chamber (2).

5. The metal scrap recycling and screening device according to claim 1, characterized in that, A support frame (23) is symmetrically fixed to one side of the outer wall of the screening body (1). A control panel (24) is installed at one end of the support frame (23). Operation buttons are distributed on one side of the outer wall of the control panel (24).

6. The metal scrap recycling and screening device according to claim 1, characterized in that, The outer wall of the vortex sorting disk (4) is provided with multiple sorting grooves (25), the inner wall of the sorting grooves (25) is coated with a wear-resistant coating, and the width of the sorting grooves (25) gradually increases from the center to the outside.

7. The metal scrap recycling and screening device according to claim 1, characterized in that, The guide plate (5) has a flow channel (26) distributed on one side of its outer wall. The bottom outer wall of the flow channel (26) is welded with a flow plate (27), and the flow plate (27) is arc-shaped.

8. A metal scrap recycling and screening device according to claim 3, characterized in that, The length of the conveyor belt (17) is the same as the length of the bottom outer wall of the sorting hopper (16), and the running direction of the conveyor belt (17) is consistent with the opening direction of the sorting hopper (16).

9. A metal scrap recycling and screening device according to claim 6, characterized in that, The number of sorting slots (25) is six, and the spacing between adjacent sorting slots (25) is equal.

10. A metal scrap recycling and screening device according to claim 7, characterized in that, The depth of the flow channel (26) gradually decreases from one end of the guide plate (5) to the other end, and the width of the flow channel (26) remains constant.

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