Nonferrous metal waste classification screening structure based on spectrum recognition

Abstract

The invention belongs to the technical field of nonferrous metal screening, and particularly relates to a nonferrous metal waste classification screening structure based on spectrum recognition, which comprises a rack, and a constant-speed conveying mechanism and a high-speed conveying mechanism which are arranged on the rack, and the nonferrous metal waste is classified and screened through the speed difference between the high-speed conveying mechanism and the constant-speed conveying mechanism. The non-ferrous metal waste conveyed at a constant speed is dispersed; the flattening mechanism can guide and discharge large-size waste to the material returning mechanism through angle adjustment, the situation that the large-size waste blocks a conveying path and influences the spectrum detection range is avoided, waste dispersion is achieved through the speed difference of waste conveying of the constant-speed conveying mechanism and the high-speed conveying mechanism, and then spectrum recognition of multiple sets of probes and a linear camera is achieved. Different non-ferrous metals can be accurately distinguished, misjudgment caused by waste material stacking is avoided, the detection result can be quickly responded through the execution module, classified screening is achieved, and the treatment efficiency of the non-ferrous metal waste materials is improved.

Description

Technical Field

[0001] This invention belongs to the field of non-ferrous metal screening technology, and specifically relates to a non-ferrous metal waste grading and screening structure based on spectral recognition. Background Technology

[0002] In the scrap metal recycling industry, piles of waste containing mixed materials such as aluminum, copper, and iron are like resource blind boxes. The non-ferrous metal sorting machine mainly uses eddy current separators. Eddy current separators are an effective method for recycling non-ferrous metals. They have the advantages of excellent sorting effect, strong adaptability, reliable mechanical structure, light weight, strong repulsion force, high sorting efficiency, and large processing capacity. They can separate some non-ferrous metals from waste. In electronic waste recycling and processing production lines, they are mainly used to separate non-ferrous metals such as copper and aluminum from mixed materials.

[0003] Existing all-metal sorting machines employ dual-mode technology of X-ray fluorescence spectroscopy (XRF) and laser-induced breakdown spectroscopy (LIBS). By emitting high-energy X-rays or pulsed lasers to excite atoms on the metal surface, when atoms transition from the excited state back to the ground state, they release photons of characteristic wavelengths, forming a unique "spectral fingerprint." By comparing the spectral characteristics of more than 2,000 metals in the database, the system can distinguish materials such as aluminum within 0.1 seconds, which is more accurate than the traditional magnetic separation method.

[0004] However, during the transportation of bulk non-ferrous metal waste from crushing lines or pre-processed materials, some materials inevitably fail to be crushed to the appropriate size. Oversized non-ferrous metal waste is not easy to spread evenly on the conveying structure, which leads to some non-ferrous metal waste being blocked during spectral sorting, resulting in sorting errors. This causes some non-ferrous metals to be missed during the sorting process. Furthermore, the inability to spread the bulk waste evenly during transportation will further affect the screening of non-ferrous metal waste. Therefore, we need to propose a non-ferrous metal waste grading and screening structure based on spectral recognition. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a non-ferrous metal waste grading and screening structure based on spectral recognition, including a frame and a uniform-speed conveying mechanism and a high-speed conveying mechanism mounted on the frame. The non-ferrous metal waste being conveyed at a uniform speed is dispersed by the speed difference between the high-speed conveying mechanism and the uniform-speed conveying mechanism.

[0006] The uniform speed conveying mechanism is equipped with a protective cover, the protective cover is equipped with a smoothing mechanism, the protective cover is equipped with an angle adjustment mechanism for changing the angle of the smoothing mechanism, and the two sides of the frame are equipped with a return mechanism. The angle of the smoothing mechanism is adjusted by the angle adjustment mechanism to achieve the guiding and discharge of large-sized non-ferrous metal waste.

[0007] A spectral recognition and detection module is installed above the high-speed conveying mechanism, which enables the detection and identification of different non-ferrous metals.

[0008] Furthermore, the smoothing mechanism includes a vertical shaft and a drainage smoothing plate. A lifting ring is fixedly connected to the upper end of the vertical shaft, and a rotating shaft that is rotatably inserted into the lower end of the vertical shaft is fixedly connected to the upper surface of the drainage smoothing plate. Multiple sets of equidistant positioning holes are opened on the outer side of the vertical shaft, and a wing screw that is inserted into one set of positioning holes is threaded onto the protective cover.

[0009] Furthermore, the upper surface of the protective cover is provided with a through hole for the vertical shaft to pass through, and the upper surface of the protective cover is provided with a sliding groove for the angle adjustment mechanism to slide, and multiple sets of slots are provided on both sides of the inner cavity of the sliding groove.

[0010] Furthermore, the angle adjustment mechanism includes a slider that is slidably disposed in the adjustment groove, and a snap-fit ​​structure is installed inside the slider. The snap-fit ​​structure snaps into the snap-fit ​​groove in the adjustment groove. A telescopic sleeve is fixedly connected to the lower surface of the slider, and a protrusion is fixedly connected to the lower end of the telescopic sleeve. A guide groove is provided on the upper surface of the drainage plate for the protrusion to slide, and the side view cross section of the guide groove is convex.

[0011] Furthermore, the snap-fit ​​structure includes a pressure rod, a first spring, a second spring, and two sets of snap-fit ​​blocks. The upper surface of the slider is provided with a mounting hole for installing the pressure rod, and both sides of the slider are provided with irregular holes that communicate with the mounting hole. Snap-fit ​​blocks that engage with the snap-fit ​​slots are slidably disposed in both sets of irregular holes, and a first spring that abuts against the snap-fit ​​blocks is disposed in the irregular holes. The second spring is disposed at the bottom of the mounting hole and abuts against the lower end of the pressure rod. A storage groove is provided on the outer side of the pressure rod for embedding the two sets of snap-fit ​​blocks.

[0012] Furthermore, the frame is mainly supported by a front frame and a rear frame integrally formed, with the front frame and the rear frame being staggered. The uniform speed conveying mechanism is installed in the front frame, and the high speed conveying mechanism is installed in the rear frame. The lower ends of the front frame and the rear frame are equipped with base frames for support. Side beams are fixedly connected to both sides of the inner cavity of the front frame and the rear frame, and multiple sets of support beams are welded between the two sets of side beams.

[0013] Furthermore, the uniform speed conveying mechanism includes a first drive motor, a first transmission component, two sets of first conveying rollers, and a uniform speed conveying belt. The first drive motor is installed at the lower end of the front frame, and both sets of first conveying rollers are rotatably installed in the inner cavity of the front frame. The uniform speed conveying belt is installed on the two sets of first conveying rollers, and the first transmission component is located at the output end of the first drive motor and passes through one end of the front frame with one of the sets of first conveying rollers.

[0014] Furthermore, the high-speed conveying mechanism includes a second drive mechanism, a second transmission component, two sets of second conveying rollers, and a high-speed conveyor belt. The second drive motor is installed at the lower end of the rear frame, and both sets of second conveying rollers are rotatably installed in the inner cavity of the rear frame. The high-speed conveyor belt is installed on the two sets of second conveying rollers, and the second transmission component is located at the output end of the second drive motor and at one end of one set of first conveying rollers that passes through the rear frame.

[0015] Furthermore, the spectral recognition and detection module includes a chassis, a control box, multiple sets of probes, multiple sets of linear cameras, and an execution module. The chassis is installed on the upper end of the rear frame and located above the high-speed conveyor belt. The control box is located on one side of the chassis. The multiple sets of probes and multiple sets of linear cameras are all located at the top of the inner cavity of the chassis. The execution module is located at the end of the rear frame away from the uniform speed conveying mechanism.

[0016] Furthermore, both sets of the material return mechanism include a material return pipe. One end of the material return pipe is fixedly connected to two sets of positioning plates, and multiple sets of positioning bolts that are bolted to the front frame are inserted into both sets of positioning plates. Side grooves that communicate with the material return pipe's inlet are opened on both sides of the front frame, and expansion grooves that communicate with the material return pipe's inlet are opened on both sides of the protective cover.

[0017] Furthermore, it also includes a vibrating feeding mechanism installed on the front frame. The vibrating feeding mechanism includes a fixed frame and a slow-flow hopper. The fixed frame is fixedly connected to the end of the front frame away from the rear frame. Multiple sets of spring components are fixedly connected to the upper end of the fixed frame. A reinforcing beam for mounting the multiple sets of spring components is fixedly connected to the lower surface of the slow-flow hopper. A vibrating motor is installed on the lower surface of the slow-flow hopper. A centralized baffle is integrally formed at the discharge end of the slow-flow hopper.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention utilizes the cooperation between the frame, uniform speed conveying mechanism, high speed conveying mechanism, smoothing mechanism, and spectral detection and identification module. The smoothing mechanism can be adjusted at the angle to guide large-sized waste materials to the return material mechanism, preventing them from blocking the conveying path and affecting the spectral detection range. The speed difference between the uniform speed conveying mechanism and the high speed conveying mechanism is used to disperse the waste materials. Then, the spectral identification of multiple probes and linear cameras can accurately distinguish different non-ferrous metals, avoiding misjudgments caused by waste accumulation. The execution module can quickly respond to the detection results, realize graded screening, and improve the processing efficiency of non-ferrous metal waste.

[0020] 2. This invention utilizes the cooperation between the protective cover, the smoothing mechanism, and the angle adjustment mechanism. The angle adjustment mechanism, through a snap-fit ​​structure and a telescopic sleeve, allows for quick adjustment of the smoothing mechanism's angle. The vertical shaft positioning hole of the smoothing mechanism, in conjunction with the wing screw, facilitates height fixing. Parameter adjustment can be completed without complex tools, lowering the operational threshold and making it suitable for conveying and screening non-ferrous metal waste of different specifications, thus expanding its applicability.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present invention is shown;

[0024] Figure 2 A schematic diagram of the uniform speed conveying mechanism according to an embodiment of the present invention is shown;

[0025] Figure 3 A schematic diagram of the structure of the spectral detection and recognition module according to an embodiment of the present invention is shown;

[0026] Figure 4 A schematic diagram of the structure of the vibration feeding mechanism according to an embodiment of the present invention is shown;

[0027] Figure 5 A schematic diagram of the structure of the liner according to an embodiment of the present invention is shown;

[0028] Figure 6 A schematic diagram of the structure inside the protective cover according to an embodiment of the present invention is shown;

[0029] Figure 7 A schematic diagram of the smoothing mechanism and angle adjustment mechanism according to an embodiment of the present invention is shown;

[0030] Figure 8 A schematic diagram of the snap-fit ​​structure according to an embodiment of the present invention is shown.

[0031] In the diagram: 1. Frame; 2. Base frame; 3. Uniform speed conveying mechanism; 31. First drive motor; 32. First transmission component; 33. First conveying roller; 34. Uniform speed conveying belt; 4. High speed conveying mechanism; 41. Second drive motor; 42. Second transmission component; 43. Second conveying roller; 44. High speed conveying belt; 5. Vibrating feeding mechanism; 51. Slow-flow hopper; 52. Concentrated baffle; 53. Fixed frame; 54. Spring component; 55. Reinforcing beam; 56. Vibrating motor; 6. Protective cover; 61. Expansion groove; 62. Through hole; 63. Slide groove; 64. Slot; 7. Smoothing mechanism; 71. Vertical shaft; 72. Lifting mechanism; 73. Pull ring; 74. Positioning hole; 75. Rotating shaft; 76. Drainage plate; 77. Guide groove; 88. Angle adjustment mechanism; 89. Slider; 80. Telescopic sleeve; 81. Protrusion; 82. Mounting hole; 83. Irregular hole; 84. Locking block; 85. First spring; 86. Second spring; 87. Pressure rod; 88. Collection groove; 99. Return material mechanism; 91. Return material pipe; 92. Positioning plate; 93. Positioning bolt; 10. Chassis; 11. Control box; 12. Probe; 13. Linear camera; 14. Execution module; 15. Front frame; 16. Rear frame; 17. Side beam; 18. Support beam; 19. Side groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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] like Figure 1-8 As shown, this embodiment of the invention provides a non-ferrous metal waste grading and screening structure based on spectral recognition. It is characterized by including a frame 1 and a uniform speed conveying mechanism 3 and a high speed conveying mechanism 4 installed on the frame 1. The non-ferrous metal waste conveyed at a uniform speed is dispersed by the speed difference between the high speed conveying mechanism 4 and the uniform speed conveying mechanism 3.

[0034] A protective cover 6 is installed on the uniform speed conveying mechanism 3, a smoothing mechanism 7 is installed on the protective cover 6, and an angle adjustment mechanism 8 for changing the angle of the smoothing mechanism 7 is provided on the protective cover 6. A return material mechanism 9 is installed on both sides of the frame 1. The angle of the smoothing mechanism 7 is adjusted by the angle adjustment mechanism 8 to achieve the guiding and discharge of large-sized non-ferrous metal waste.

[0035] A spectral recognition and detection module is installed above the high-speed conveying mechanism 4, which enables the detection and identification of different non-ferrous metals.

[0036] In this embodiment, as Figure 6-7 As shown, the smoothing mechanism 7 includes a vertical shaft 71 and a drainage smoothing plate 75. A lifting ring 72 is fixedly connected to the upper end of the vertical shaft 71. A rotating shaft 74, which is rotatably inserted into the lower end of the vertical shaft 71, is fixedly connected to the upper surface of the drainage smoothing plate 75. Multiple sets of equidistant positioning holes 73 are opened on the outer side of the vertical shaft 71. A directional beam (not shown in the figure) is fixedly connected to the outer side of the vertical shaft 71 to prevent the vertical shaft 71 from shifting its angle during height adjustment. A wing screw (not shown in the figure) is threaded onto the protective cover 6 and inserted into one of the positioning holes 73 for positioning the vertical shaft 71 after height adjustment.

[0037] Specifically, a bearing (not shown in the figure) is embedded at the lower end of the vertical shaft 71, while the upper end of the rotating shaft 74 is fixed to the inner ring of the bearing. The angle of the drainage flat plate 75 is rotated by the rotating shaft 74, providing a basis for the subsequent angle adjustment mechanism 8. The lifting ring 72 facilitates the application of external force to the vertical shaft 71, thereby facilitating the height adjustment of the drainage flat plate 75.

[0038] Furthermore, such as Figure 6 As shown, the upper surface of the protective cover 6 is provided with a through hole 62 for the vertical shaft 71 to pass through, and the upper surface of the protective cover 6 is provided with a sliding groove 63 for the angle adjustment mechanism 8 to slide, and multiple sets of slots 64 are provided on both sides of the inner cavity of the sliding groove 63.

[0039] Specifically, the through hole 62 is used for the vertical shaft 71 to pass through, ensuring the smoothing mechanism 7 is installed stably, while the slide groove 63 provides a sliding path for the angle adjustment mechanism 8, and the slot 64 provides a positioning point for the snap-fit ​​structure to fix the angle adjustment mechanism 8 after the position is moved, thus preventing displacement after adjustment.

[0040] In a further preferred embodiment, such as Figure 6-7 As shown, the angle adjustment mechanism 8 includes a slider 81 that is slidably disposed in the adjustment groove, and a snap-fit ​​structure is installed in the slider 81. The snap-fit ​​structure snaps into the snap-fit ​​groove 64 in the adjustment groove. A telescopic sleeve rod 82 is fixedly connected to the lower surface of the slider 81, and a protrusion 83 is fixedly connected to the lower end of the telescopic sleeve rod 82. A guide groove 76 is provided on the upper surface of the drainage smoothing plate 75 for the protrusion 83 to slide. The side view cross section of the guide groove 76 is convex.

[0041] Specifically, the slider 81 cooperates with the slide groove 63 to achieve lateral movement. The front cross section of the slider 81 is set in an I-shape to prevent the slider 81 from falling out of the slide groove 63. At the same time, the telescopic sleeve 82 adapts to the adjustment requirements of different heights. By utilizing the sliding of the protrusion 83 in the guide groove 76, it can ensure that the force is even when the angle of the drainage plate 75 is adjusted, and avoid jamming. Meanwhile, the convex structure of the guide groove 76 can prevent the protrusion 83 from falling out and extend the service life of the structure.

[0042] Preferred, such as Figure 7-8 As shown, the snap-fit ​​structure includes a pressure rod 89, a first spring 87, a second spring 88, and two sets of snap-fit ​​blocks 86. The upper surface of the slider 81 has mounting holes 84 for the pressure rod 89. A protruding strip is fixed to the outer side of the pressure rod 89 to prevent it from rotating within the mounting holes 84, thus preventing misalignment between the snap-fit ​​blocks 86 and the receiving groove 810. Furthermore, both sides of the slider 81 have irregularly shaped holes 85 communicating with the mounting holes 84. The front view cross-section of the irregularly shaped hole 85 is a convex shape rotated 90 degrees. The U-shaped design facilitates the installation of the locking block 86 and the first spring 87. The cross-section of the locking block 86 is T-shaped to facilitate the fitting of the first spring 87. The locking blocks 86 that engage with the locking slots 64 are slidably installed in both sets of irregular holes 85. The first spring 87 that abuts against the locking block 86 is installed in the irregular hole 85. The second spring 88 is installed at the bottom of the mounting hole 84 and abuts against the lower end of the pressure rod 89. The outer side of the pressure rod 89 has a storage groove 810 for the two sets of locking blocks 86 to be embedded.

[0043] Specifically, when the pressure rod 89 is pressed, the height of the storage groove 810 decreases, and the locking block 86 will be inserted into the storage groove 810 under the action of the first spring 87, so that the locking block 86 is disengaged from the locking groove 64, so that the slider 81 can slide and adjust. When the pressure rod 89 is released, the first spring 87 pushes the pressure rod 89 to reset, so that the locking block 86 is disengaged from the storage groove 810, and then the locking block 86 is engaged with the corresponding locking groove 64, achieving quick positioning. The overall structure does not require additional fasteners and has high adjustment efficiency.

[0044] In addition, such as Figure 1 and Figure 3-4 As shown, the frame 1 is mainly supported by a front frame 15 and a rear frame 16 integrally formed. The front frame 15 and the rear frame 16 are staggered. The uniform speed conveying mechanism 3 is installed in the front frame 15, and the high speed conveying mechanism 4 is installed in the rear frame 16. The lower ends of the front frame 15 and the rear frame 16 are equipped with a base frame 2 for support. Side beams 17 are fixedly connected to both sides of the inner cavity of the front frame 15 and the rear frame 16, and multiple sets of support beams 18 are welded between the two sets of side beams 17.

[0045] Specifically, the front frame 15 and the rear frame 16 are staggered to ensure smooth connection between the uniform speed conveying mechanism 3 and the high speed conveying mechanism 4, preventing waste from falling. The side beam 17 and the support beam 18 enhance the rigidity of the frame 1 and adapt to the load-bearing requirements of the uniform speed conveying mechanism 3 and the high speed conveying mechanism 4. The base frame 2 improves the overall stability and prevents the equipment from shaking during operation.

[0046] Secondly, such as Figure 2As shown, the uniform speed conveying mechanism 3 includes a first drive motor 31, a first transmission component 32, two sets of first conveying rollers 33 and a uniform speed conveying belt 34. The first drive motor 31 is installed at the lower end of the front frame 15. Both sets of first conveying rollers 33 are rotatably installed in the inner cavity of the front frame 15. The uniform speed conveying belt 34 is installed on the two sets of first conveying rollers 33. The first transmission component 32 is located at the output end of the first drive motor 31 and passes through one end of the front frame 15 with one of the sets of first conveying rollers 33.

[0047] Specifically, the first drive motor 31 drives the first conveyor roller 33 through the first transmission component 32 to ensure the stable operation of the uniform speed conveyor belt 34, providing a uniform feeding speed for the waste, avoiding waste accumulation due to fluctuations in conveying speed, and laying the foundation for subsequent dispersion and smoothing.

[0048] However, as Figure 3 As shown, the high-speed conveying mechanism 4 includes a second drive mechanism, a second transmission component 42, two sets of second conveying rollers 43 and a high-speed conveyor belt 44. The second drive motor 41 is installed at the lower end of the rear frame 16. Both sets of second conveying rollers 43 are rotatably installed in the inner cavity of the rear frame 16. The high-speed conveyor belt 44 is installed on the two sets of second conveying rollers 43. The second transmission component 42 is located at the output end of the second drive motor 41 and one of the first conveying rollers 33 passes through one end of the rear frame 16.

[0049] Specifically, the second drive motor 41 drives the high-speed conveyor belt 44, which quickly disperses the stacked waste materials by the speed difference with the uniform speed conveyor belt 34, so that each piece of waste material passes through the spectral recognition area individually, thereby improving detection accuracy and reducing missed detections and false detections. Both the first transmission component 32 and the second transmission component 42 are composed of synchronous belts and synchronous pulleys.

[0050] It is worth noting that, such as Figure 3As shown, the spectral recognition and detection module includes a chassis 10, a control box 11, multiple probes 12, multiple linear cameras 13, and an execution module 14. The chassis 10 is mounted on the upper end of the rear frame 16 and located above the high-speed conveyor belt 44. The control box 11 is located on one side of the chassis 10. The control box 11 is an industrial-grade computer that performs rapid matching and qualitative and quantitative analysis of the collected raw spectral data with the built-in metal spectral database. Based on preset classification rules (such as "all aluminum", "all copper", "6061 aluminum", "304 stainless steel"), it determines which category the current material belongs to, and combines this with the position information obtained by the linear cameras 13. An instruction with material ID, category, and precise coordinates is generated and sent to the actuator. Multiple sets of probes 12 and multiple sets of linear cameras 13 are all located at the top of the inner cavity of the housing 10. The multiple sets of probes 12 are LIBS probes and XRF probes, while the multiple sets of linear cameras 13 are all high-resolution cameras that are triggered synchronously with the multiple sets of probes 12 to locate the precise coordinates and contours of each material. An excitation source (not shown in the figure) is provided inside the housing 10. The excitation source is a high-power, high-frequency pulsed laser, which is a common technology in the prior art and will not be described in detail. The execution module 14 is located at the end of the rear frame 16 away from the uniform speed conveying mechanism 3.

[0051] LIBS probe: Suitable for precise compositional analysis of light metals (such as aluminum and magnesium) and all common metals, and can even distinguish alloy grades (such as 6061 aluminum vs 7075 aluminum). It uses high-energy laser pulses to generate plasma on the surface of materials and analyzes the emitted spectrum to determine the elemental composition.

[0052] XRF probes are suitable for rapid identification of heavy metals (such as copper, zinc, lead, and brass), but have lower sensitivity to light elements (such as aluminum and magnesium).

[0053] The execution module 14 is a high-pressure airflow jet valve array, mainly composed of 20-40 closely arranged high-precision, high-speed electromagnetic jet valves. Each jet valve is independently controlled and corresponds to a small area of ​​the high-speed conveyor belt 44. When the identified target material reaches the jet area, the control system in the control box 11 accurately triggers one or more corresponding jet valves according to its category and real-time coordinates to jet high-pressure air (or inert gas) and blow the material into the corresponding collection bin. The material that is not jetted falls naturally by inertia (as general waste or another category). Multiple diversion chutes (not shown in the figure) are set at the discharge end of the frame 1. This is a common technology in the prior art. Different categories of materials blown out by the high-pressure airflow enter the designated collection bins (such as copper bins, aluminum bins, zinc bins, mixed alloy bins, waste bins, etc.) through different chutes to achieve physical separation.

[0054] Specifically, multiple sets of probes 12 and linear cameras 13 cover the full width of the high-speed conveyor belt 44 to ensure no blind spots in detection. When materials pass through the detection area, the linear camera 13 locates the materials and triggers the system to perform spectral bombardment on each material. Within milliseconds, the sensor collects the generated spectral signals, while the control box 11 processes the detection data and instructs the execution module 14 to reduce manual intervention and improve screening efficiency.

[0055] Preferred, such as Figure 1-2 As shown, both sets of return mechanisms 9 include a return pipe 91. Two sets of positioning plates 92 are fixedly connected to the feed end of one end of the return pipe 91. Multiple sets of positioning bolts 93 that are bolted to the front frame 15 are inserted into the two sets of positioning plates 92. Side grooves 19 that communicate with the feed end of the return pipe 91 are opened on both sides of the front frame 15. Expansion grooves 61 that communicate with the feed end of the return pipe 91 are opened on both sides of the protective cover 6.

[0056] Specifically, the return pipe 91 is fixed to the side groove 19 of the front frame 15 by the positioning plate 92 and the positioning bolt 93. The expansion groove 61 expands the feeding range, which can collect and recycle the large-sized waste guided by the smoothing mechanism 7, and prevent it from entering the high-speed conveying mechanism 4 to cause blockage and block small waste, making it easier to process the large-sized waste separately later.

[0057] Finally, as Figure 1 and Figure 4 As shown, it also includes a vibrating feeding mechanism 5 installed on the front frame 15. The vibrating feeding mechanism 5 includes a fixed frame 53 and a slow-flow hopper 51. The fixed frame 53 is fixedly connected to the end of the front frame 15 away from the rear frame 16. Multiple sets of spring members 54 are fixedly connected to the upper end of the fixed frame 53. A reinforcing beam 55 for mounting multiple sets of spring members 54 is fixedly connected to the lower surface of the slow-flow hopper 51. A vibrating motor 56 is installed on the lower surface of the slow-flow hopper 51. A centralized baffle 52 is integrally formed at the discharge end of the slow-flow hopper 51.

[0058] Specifically, the vibrating motor 56 drives the slow-flow hopper 51 to vibrate, so that the waste falls evenly. The concentrated baffle 52 prevents the waste from deviating from the uniform speed conveyor belt 34. The spring component 54 (mainly composed of telescopic rod and spring) buffers the vibration impact, reduces damage to the frame 1, and at the same time ensures a stable feeding rate and avoids excessive waste causing the uniform speed conveyor mechanism 3 to overload.

[0059] When in use, non-ferrous metal waste is poured into the slow-flow hopper 51 of the vibrating feeding mechanism 5. The vibrating motor 56 drives the slow-flow hopper 51 to vibrate. Under the guidance of the centralized baffle 52, the waste falls onto the uniform speed conveyor belt 34 of the uniform speed conveying mechanism 3 at a uniform speed.

[0060] Secondly, the uniform speed conveyor belt 34 transports the waste material into the protective cover 6. The angle of the smoothing mechanism 7's guiding plate 75 is adjusted by the angle adjustment mechanism 8. If the waste material is large, the guiding plate 75 guides it to the expansion grooves 61 on both sides of the protective cover 6. It is then collected and recycled through the return pipe 91 of the return mechanism 9. Small-sized waste materials are combed into a single layer by the smoothing mechanism 7 to avoid stacking.

[0061] Furthermore, the smoothed small-sized waste enters the high-speed conveyor mechanism 4. The speed difference between the high-speed conveyor belt 44 and the uniform speed conveyor belt 34 quickly disperses the waste, allowing it to pass under the chassis 10 separately. Meanwhile, multiple sets of probes 12 and linear cameras 13 inside the chassis 10 perform spectral detection on the waste, and the data is transmitted to the control box 11. The control box 11 identifies the type of waste and issues instructions.

[0062] Finally, the control box 11 instruction execution module 14 diverts the waste to different diversion chutes according to the type of waste, thus completing the grading and screening of non-ferrous metal waste.

[0063] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-ferrous scrap material grading and sorting structure based on spectral recognition, characterized by, Include: Frame (1), and installed on the frame (1) uniform speed conveying mechanism (3) and high-speed conveying mechanism (4), through the speed difference between high-speed conveying mechanism (4) and uniform speed conveying mechanism (3), realize the dispersion of uniform speed conveying non-ferrous metal waste; The uniform speed conveying mechanism (3) is provided with a protective cover (6), the protective cover (6) is provided with a smoothing mechanism (7), the protective cover (6) is provided with an angle adjusting mechanism (8) for angle transformation of the smoothing mechanism (7), both sides of the frame (1) are provided with a return mechanism (9), the angle of the smoothing mechanism (7) is adjusted by the angle adjusting mechanism (8), so as to realize the guiding and discharging of large size non-ferrous metal waste; The high-speed conveying mechanism (4) is provided with a spectrum recognition detection module above, and the spectrum recognition detection module realizes the detection and recognition of different non-ferrous metals.

2. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 1, characterized in that: The smoothing mechanism (7) comprises a vertical shaft (71) and a drainage smoothing plate (75), the upper end of the vertical shaft (71) is fixedly connected with a lifting ring (72), the upper surface of the drainage smoothing plate (75) is fixedly connected with a rotating shaft (74) rotatably inserted into the lower end of the vertical shaft (71), a plurality of groups of positioning holes (73) are formed in the outer side of the vertical shaft (71), and the protective cover (6) is threadedly connected with a butterfly screw inserted into one of the positioning holes (73).

3. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 2, characterized in that: The upper surface of the protective cover (6) is provided with a through hole (62) for the vertical shaft (71) to penetrate, and the upper surface of the protective cover (6) is provided with a sliding groove (63) for the angle adjusting mechanism (8) to slide, and a plurality of clamping grooves (64) are formed in the both sides of the inner cavity of the sliding groove (63).

4. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 3, characterized in that: The angle adjusting mechanism (8) comprises a sliding block (81) slidably arranged in the adjusting groove, and a clamping structure is arranged in the sliding block (81), the clamping structure is clamped with the clamping groove (64) in the adjusting groove, the lower surface of the sliding block (81) is fixedly connected with an extension sleeve rod (82), the lower end of the extension sleeve rod (82) is fixedly connected with a protruding block (83), the upper surface of the drainage smoothing plate (75) is provided with a guide groove (76) for the protruding block (83) to slide, and the side view section of the guide groove (76) is in the shape of a convex character.

5. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 4, characterized in that: The clamping structure comprises a pressing rod (89), a first spring (87), a second spring (88) and two groups of clamping blocks (86), the upper surface of the sliding block (81) is provided with a mounting hole (84) for mounting the pressing rod (89), the both sides of the sliding block (81) are provided with a special-shaped hole (85) in communication with the mounting hole (84), the clamping blocks (86) are slidably arranged in the two groups of special-shaped holes (85) and clamped with the clamping grooves (64), the first spring (87) is arranged in the special-shaped hole (85) and abuts against the clamping block (86), the second spring (88) is arranged at the bottom of the mounting hole (84) and abuts against the lower end of the pressing rod (89), and the outer side of the pressing rod (89) is provided with a receiving groove (810) for embedding the two groups of clamping blocks (86).

6. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 5, characterized in that: The rack (1) is mainly supported by a front frame (15) and a rear frame (16) integrally formed, the front frame (15) and the rear frame (16) are arranged in a staggered manner, the uniform conveying mechanism (3) is installed in the front frame (15), the high-speed conveying mechanism (4) is installed in the rear frame (16), the lower ends of the front frame (15) and the rear frame (16) are provided with a bottom frame (2) for supporting, the inner cavities of the front frame (15) and the rear frame (16) are fixedly connected with side beams (17) on both sides, and a plurality of support beams (18) are welded between the two groups of side beams (17).

7. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 6, characterized in that: The uniform conveying mechanism (3) comprises a first driving motor (31), a first transmission member (32), two groups of first conveying rollers (33) and a uniform conveying belt (34), the first driving motor (31) is installed at the lower end of the front frame (15), the two groups of first conveying rollers (33) are both rotatably installed in the inner cavity of the front frame (15), the uniform conveying belt (34) is installed on the two groups of first conveying rollers (33), and the first transmission member (32) is arranged at the output end of the first driving motor (31) and one end of one group of the first conveying rollers (33) penetrating through the front frame (15).

8. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 7, characterized in that: The high-speed conveying mechanism (4) comprises a second driving mechanism, a second transmission member (42), two groups of second conveying rollers (43) and a high-speed conveying belt (44), the second driving motor (41) is installed at the lower end of the rear frame (16), the two groups of second conveying rollers (43) are both rotatably installed in the inner cavity of the rear frame (16), the high-speed conveying belt (44) is installed on the two groups of second conveying rollers (43), and the second transmission member (42) is arranged at the output end of the second driving motor (41) and one end of one group of the first conveying rollers (33) penetrating through the rear frame (16).

9. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 8, characterized in that: The spectrum recognition and detection module comprises a case (10), a control box (11), a plurality of probes (12), a plurality of linear cameras (13) and an execution module (14), the case (10) is installed at the upper end of the rear frame (16) and above the high-speed conveying belt (44), the control box (11) is arranged on one side of the case (10), the plurality of probes (12) and the plurality of linear cameras (13) are both arranged at the top of the inner cavity of the case (10), and the execution module (14) is arranged at the end of the rear frame (16) away from the uniform conveying mechanism (3).

10. The structure for grading and sorting non-ferrous scrap metal based on spectral recognition according to claim 9, characterized in that: The two groups of return mechanisms (9) both comprise a return pipe (91), one end of the return pipe (91) is fixedly connected with two groups of positioning plates (92), a plurality of positioning bolts (93) are inserted into the two groups of positioning plates (92) and are bolted to the front frame (15), side grooves (19) are formed in the two sides of the front frame (15) and are in communication with the feeding ends of the return pipes (91), and expansion grooves (61) are formed in the two sides of the protective cover (6) and are in communication with the feeding ends of the return pipes (91). It also includes the vibration feeding mechanism (5) installed on the front frame (15), the vibration feeding mechanism (5) includes the fixed frame (53) and the buffer flow hopper (51), the fixed frame (53) is fixedly connected at the end of the front frame (15) away from the rear frame (16), a plurality of spring members (54) are fixedly connected to the upper end of the fixed frame (53), the lower surface of the buffer flow hopper (51) is fixedly connected with the reinforcing beam (55) for installing the plurality of spring members (54), and the lower surface of the buffer flow hopper (51) is provided with the vibration motor (56), and the discharge end of the buffer flow hopper (51) is integrally formed with the concentration baffle (52).

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