Waste cable sorting system, sorting line and sorting method

Abstract

The invention discloses a waste cable sorting system, a sorting line and a sorting method, and belongs to the technical field of cable recovery processing, the waste cable sorting system comprises a shredding unit, the shredding unit is sequentially connected with a magnetic separator, a gravity separator, a winnowing machine, an eddy current separator and a color sorting unit, and a feeding port and a discharging port of the shredding unit are connected with conveying lines; the magnetic separator is arranged on a conveying line at a discharging port of the shredding unit, and the magnetic separator unit, the gravity separator, the winnowing machine, the eddy current separator and the color sorter are all connected with corresponding material receiving stations at the classified material receiving area through the conveying line. The metal and non-metal materials are accurately sorted and classified, recovery and storage of different types of materials are facilitated, waste of the materials is avoided, and the overall economic benefits are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable recycling and processing, and in particular to a waste cable sorting system, a sorting line and a sorting method. Background Art

[0002] The recycling of waste cables is an important resource reuse process. By recycling waste cables, the metal and non-metal components can be extracted to achieve resource reuse. At the same time, it can also reduce environmental pollution and reduce the pressure of landfill and incineration.

[0003] The existing methods for recycling and processing waste cables include manual stripping, mechanical stripping, combustion, low-temperature crushing and mechanical pulverization and sorting. Among them, the manual stripping and mechanical stripping methods have poor working environments, high labor intensity and low efficiency, and are not convenient for large-scale recycling and processing; the combustion method will produce serious flue gas pollution due to the plastic outer skin; the liquid nitrogen cooling equipment in the low-temperature crushing method is relatively expensive and is not easy to popularize; the mechanical pulverization and sorting method separates the metal and non-metal components in the cable through mechanical crushing and sorting equipment, with high processing efficiency, and is thus widely used in large-scale recycling and processing of cables.

[0004] The existing mechanical crushing and sorting method usually only uses a magnetic separator to sort the crushed waste cable mixture. However, since waste cables usually contain non-metallic materials such as plastics in addition to metals (such as conductive materials such as copper and aluminum), magnetic separation mainly relies on the attraction of the magnetic field to magnetic materials to separate metals, but cannot effectively separate non-magnetic metals, and the sorting effect is poor. In addition, the non-metallic components in waste cables also have a high recycling value. Only magnetic separation will lead to waste of non-metallic components. Summary of the invention

[0005] In order to solve the technical problems of poor sorting effect and easy waste of resources in the mechanical crushing and sorting method in the above background technology, the present invention provides a waste cable sorting system.

[0006] The technical solution of the present invention is as follows: The present invention provides a waste cable sorting system, comprising a shredder group, which is connected to a magnetic separator, a gravity separator, an air separator, an eddy current separator and a color sorter group in sequence, the feed port and the discharge port of the shredder group are both connected to a conveyor line, the magnetic separator is arranged on the conveyor line at the discharge port of the shredder group, the magnetic separator group, the gravity separator, the air separator, the eddy current separator and the color sorter are all connected to corresponding material receiving stations in a classification receiving area through the conveyor line, different sorting operations are performed for different materials, and accurate sorting and classification of metal and non-metal materials are achieved through multi-level and multi-category sorting operations, which facilitates the recovery and storage of different types of materials, avoids material waste, and improves the overall economic benefits.

[0007] Preferably, the shredder unit includes a first shredder, a feed port of the first shredder is connected to a first conveyor line, a discharge port of the first shredder is connected to a second shredder via a second conveyor line, a discharge port of the second shredder is connected to a feed port of a gravity separator via a fourth conveyor line, a magnetic separator is respectively provided on the second conveyor line and the fourth conveyor line, all discharge ends of the magnetic separators are connected to a classification receiving area via a third conveyor line, a multi-stage shredding method is adopted to improve the decomposition effect of the cable and facilitate the sorting of various materials, and a multi-stage magnetic separator magnetic separation method is adopted to ensure the sorting effect of steel armor and avoid the waste of steel armor resources.

[0008] Preferably, the mixture discharge port at the top of the gravity separator is connected to the feed port of the air separator through a pipeline, and the conductor discharge port at the bottom of the gravity separator is connected to the classification receiving area through the fifth conveyor line. The gravity separator can be used to sort lightweight materials and conductors to ensure the separation of metal materials and non-metallic materials. The coordinated use of the gravity separator and the magnetic separator effectively realizes the sorting of different metal materials such as steel armor and conductors.

[0009] Preferably, the thin material discharge port of the air separator is connected to the classification and receiving area through a screw conveyor, and the metal mixture discharge port of the air separator is connected to the feed port of the eddy current separator through a screw conveyor. The use of the air separator realizes the separation between thin materials and metal mixtures, and avoids the mixing of metal, plastic and thin materials.

[0010] Preferably, the thin copper discharge end of the eddy current separator is connected to the classification receiving area through a screw conveyor, and the plastic mixture discharge end of the eddy current separator is connected to the feed port of the color sorting unit through a screw conveyor. The different color discharge ports of the color sorting unit are respectively connected to the classification receiving area through a screw conveyor. The setting of the eddy current separator realizes the sorting of metals and plastics. In conjunction with the use of the color sorter, the plastic mixture can be sorted. While ensuring the recycling of plastics, the classified recycling of different types of plastics is realized, which is convenient for subsequent classification, induction and storage.

[0011] The present invention provides a sorting line, comprising a stacking area; a pretreatment area, used for cutting cables into segments; a cable segment temporary storage area, connected to the pretreatment area through a conveyor belt, wherein a transfer box is placed in the cable segment temporary storage area; a cable segment decomposition area, connected to the cable segment temporary storage area through a feeder, and used for decomposing the cable segments into a mixture of metals and plastics and sorting them; a classification material receiving area, connected to the cable segment decomposition area through a conveyor line group, containing a plurality of independent material receiving stations, and used for classified storage of steel armor, conductors, copper shielding layers, and plastics after sorting; a coding and conveying area, connected to the classification material receiving area and the storage area through a conveyor line, and capable of realizing automatic conveying, transportation, decomposition, classification, and storage of cables, with a high overall degree of automation and low labor intensity, and realizing the classification and storage of different metals and different plastics, with good sorting effect and high efficiency, avoiding the waste of non-metallic materials, and improving economic benefits.

[0012] Preferably, the stacking area and the pretreatment area are both arranged outside the factory. A steel grabber is provided in the stacking area. The steel grabber is an automatic robot. A gantry shear is provided in the pretreatment area. The steel grabber can automatically grab the stacked waste cables and transfer them to the pretreatment area for segmentation processing. The degree of automation is high, and the segmentation processing facilitates the subsequent cable decomposition. The feed port of the first shredder is connected to the cable segment temporary storage area through the first conveyor line, so that the cable segments outside the factory can be transported to the factory for decomposition and sorting processing.

[0013] Preferably, a sixth conveyor line is provided at each material receiving station, the coding and handling area includes a seventh conveyor line, the seventh conveyor line is perpendicular to all the sixth conveyor lines, a conveyor is provided on the seventh conveyor line, at least one pallet buffer area is provided near the seventh conveyor line, the seventh conveyor line is connected to the storage area through an eighth conveyor line, an integral coding machine is provided on the eighth conveyor line, and a stacker is provided near the storage area, thereby realizing automatic coding, classification and storage of different materials, and the overall degree of automation is high.

[0014] The present invention also provides a sorting method, which is as follows: The steel grabber grabs the cables in the stockpile area and takes them to the pre-processing area for segment cutting. The cable segments are then transported to the temporary storage area via a conveyor belt. The feeder automatically transports the transfer box containing the cable segments to the cable segment decomposition area for decomposition and sorting, and caches the sorted metals and plastics in designated trays in the classification receiving area; The pallets loaded with metal / plastic are transported to the storage area through the eighth conveyor line. During the transportation of the pallets, the overall coding machine codes and marks the pallets, and the stacker moves the coded pallets to the designated place for storage.

[0015] Preferably, the decomposition and sorting process of metals and plastics is: The cable segments are transported to the first shredder for primary decomposition, and the mixture is discharged and transported through the second conveyor line. At the same time, the magnetic separator sorts the mixture after the primary decomposition, and the steel armor is transported to the classification receiving area through the third conveyor line. The metal-plastic mixture enters the second shredder for secondary decomposition; The secondary decomposed mixture is transported through the fourth conveyor line. At the same time, the magnetic separator performs secondary sorting on the metal-plastic mixture. The secondary sorted steel armor is transported to the classification receiving area through the third conveyor line, and the other mixtures enter the gravity separator. The gravity sorter uses air flow to blow light materials off the top and guide them into the air separator, and heavy materials are discharged from the bottom of the gravity sorter to the classification receiving area; the sorter sorts the input mixed materials, and the light and thin materials are discharged to the classification receiving area, the metal mixture is discharged to the eddy current sorter for sorting, the light and thin copper is discharged to the classification receiving area, and the plastic mixture is discharged to the color sorter for sorting. The sorted plastics are discharged to the classification receiving area according to color classification.

[0016] It can be seen from the above technical solutions that the advantages of the present invention are: 1. The shredder unit, magnetic separator, gravity separator, air separator, eddy current separator and color separator are arranged in sequence, and the magnetic separator, gravity separator, air separator, eddy current separator and color separator are connected with the corresponding receiving stations in the classification receiving area through conveyor lines. Different sorting operations are carried out for different materials. Through multi-level and multi-category sorting operations, accurate sorting and classification of metal and non-metal materials are achieved, which is convenient for the recycling and storage of different types of materials, avoiding waste of materials and improving the overall economic benefits.

[0017] 2. The multi-stage shredding method is adopted to improve the decomposition effect of the cable and facilitate the sorting of various materials. At the same time, the multi-stage magnetic separator magnetic separation method is adopted to ensure the sorting effect of the steel armor and avoid the waste of steel armor resources.

[0018] 3. The stacking area, pretreatment area, cable segment temporary storage area, cable segment decomposition area, classification and material receiving area and coding and handling area are set up in sequence, which can realize the handling, transportation, decomposition, classification and storage of cables. The overall degree of automation is high and the labor intensity is low. The cable segment decomposition area contains multi-level sorting stations. Through the coordinated use of the cable segment decomposition area and the classification and material receiving area, the classification of different metals and plastics is realized. The sorting effect is good and the efficiency is high, which avoids the waste of non-metallic materials and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall layout structure of a waste cable sorting line according to one or more embodiments of the present invention; Figure 2 It is a schematic diagram of the enlarged structure of the cable segment decomposition area according to one or more embodiments of the present invention; The components represented by the reference numerals in the figure are: 1. Stacking area; 2. Steel grabber; 3. Gantry shear; 4. Temporary storage area for cable segments; 5. First conveyor line; 6. First shredder; 7. Second conveyor line; 8. First magnetic separator; 9. Second shredder; 10. Second magnetic separator; 11. Third conveyor line; 12. Fourth conveyor line; 13. Gravity separator; 14. Air separator; 15. Eddy current separator; 16. Color separator; 17. Screw conveyor; 18. Fifth conveyor line; 19. Sixth conveyor line; 20. Seventh conveyor line; 21. Sorting and receiving area; 22. Pallet buffer area; 23. Handler; 24. Eighth conveyor line; 25. Sorting and coding machine; 26. Stacker; 27. Storage area. DETAILED DESCRIPTION

[0021] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0022] Example 1 In a typical embodiment of the present invention, Figure 2 As shown, a waste cable sorting system is proposed, comprising: a first conveyor line 5, a shredder group, a second conveyor line 7, a magnetic separator group, a third conveyor line 11, a fourth conveyor line 12, a gravity separator 13, a wind separator 14, an eddy current separator 15, a color separator 16, a screw conveyor 17 and a fifth conveyor line 18. One end of the first conveyor line 5 is connected to the feed port of the first shredder 6 for conveying the cable segments to the first shredder 6 for primary decomposition. The first shredder 6 can shred the input cable segments and discharge them. The discharge port of the first shredder 6 is connected to the feed port of the second shredder 9 through the second conveyor line 7, and a first magnetic separator 8 is arranged above the second conveyor line 7. The first magnetic separator 8 is a belt magnetic separator, which can sort the mixed material after the initial decomposition to achieve the sorting of the steel armor and the metal plastic mixture. A third conveyor line 11 is arranged on one side of the second conveyor line 7. The discharge end of the first magnetic separator 8 is connected to the third conveyor line 11, and one end of the third conveyor line 11 is connected to the classification receiving line. The steel armor receiving station in the zone 21 is connected to realize the receiving cache of the steel armor; the second shredder 9 is used to perform secondary decomposition on the mixed material after the initial decomposition and sorting, so as to improve the effective separation between metal and plastic and improve the sorting effect. The discharge port of the second shredder 9 is connected to the feed port of the gravity separator 13 through the fourth conveyor line 12. A second magnetic separator 10 is provided above the fourth conveyor line 12, and the discharge end of the second magnetic separator 10 is also connected to the third conveyor line 11 to realize the secondary sorting of the steel armor and improve the sorting effect of the steel armor.

[0023] The gravity separator 13 performs sorting based on the density difference between materials. The top and bottom of the gravity separator 13 are provided with discharge ports, and the top of the gravity separator 13 is provided with a feed port. The bottom side wall of the gravity separator 13 is also provided with an air inlet. The air flow is used to blow light materials away from the top, while heavy materials are deposited at the bottom of the gravity separator 13 and discharged, so as to achieve the sorting of conductors (such as copper cores) and metal mixtures. The bottom discharge port of the gravity separator 13 is connected to the conductor receiving station in the classification receiving area 21 through the fifth conveyor line 18 to achieve conductor receiving buffering. The top discharge port of the gravity separator 13 is connected to the feed port of the air separator 14 through a pipeline to discharge the metal mixture into the air separator 14.

[0024] The air separator 14 has two discharge ports, namely, a discharge port for thin and light materials (i.e., rubber strips, hemp ropes, fiber fillings, etc.) and a discharge port for metal mixtures, which are used for discharging thin and light materials and metal mixtures respectively. The discharge port for thin and light materials of the air separator 14 is connected to the thin and light material receiving station in the classification receiving area 21 through a screw conveyor 17 to realize the receiving buffer of thin and light materials. The discharge port for metal mixture of the air separator 14 is connected to the feed port of the eddy current separator 15 through the screw conveyor 17 to feed the metal mixture into the eddy current separator 15.

[0025] The eddy current separator 15 uses an alternating magnetic field to separate light and thin copper (copper shielding layer) and plastic mixtures based on the difference in electrical conductivity of the materials. The light and thin copper discharge end of the eddy current separator 15 is connected to the light and thin copper receiving station in the classification receiving area 21 through a screw conveyor 17. The plastic mixture discharge end of the eddy current separator 15 is connected to the feed port of the color sorter 16 through the screw conveyor 17, so that the color sorter 16 can be used to sort the plastic mixture. The color sorter 16 contains an air nozzle and a sensor, which can control the opening and closing of the air nozzle according to the color of the plastic particles, so as to use the jet to blow away the falling particles of the specified color, thereby realizing the sorting of particles of different colors, so as to realize the sorting of different types of plastics.

[0026] Two color sorters 16 are provided in sequence, and two adjacent color sorters 16 are connected in series. The discharge port of the color sorter 16 is connected to the plastic receiving station in the classification receiving area 21 through a screw conveyor 17. In this embodiment, two color sorters 16 are used to sort the plastic mixture into three categories: black outer sheath, black and white cross-linked polyethylene, and non-black plastic mixture, and three corresponding receiving stations are set in the classification receiving area 21.

[0027] It is understandable that in actual applications, the plastic mixture can also be sorted by other classifications, which can be specifically set according to the actual color types and a specified number of color sorters 16 can be used. No excessive restrictions are made here.

[0028] The classified material splicing area 21 is provided with a number of independent material splicing stations, such as a steel armor splicing station, a conductor splicing station, a light and thin material splicing station, a light and thin copper splicing station and a number of plastic splicing stations.

[0029] Example 2 In a typical embodiment of the present invention, Figure 1As shown, a sorting line for waste cables is proposed, comprising: a stacking area 1, a pretreatment area, a cable segment temporary storage area 4, a cable segment decomposition area, a classification receiving area, a coding and conveying area and a storage area 27, wherein the stacking area 1 and the pretreatment area are both arranged outside the factory area, and the cable segment temporary storage area 4, the cable segment decomposition area, the classification receiving area 21, the coding and conveying area and the storage area 27 are all arranged within the factory area, wherein the stacking area 1 is used for stacking recycled waste cables, and a steel grabber 2 is provided in the stacking area 1, which can automatically grab and transfer the stacked waste cables to the pretreatment area through the steel grabber 2, so that the waste cables are sheared in the pretreatment area to cut the waste cables into cable segments of specified lengths; the cable segment temporary storage area 4 is connected to the pretreatment area through a conveyor belt, and a plurality of transfer boxes are arranged in the cable segment temporary storage area 4 to accommodate the cable segments through the transfer boxes, and the cable segment decomposition area is used for The cable segments are decomposed (also understood as crushed) and sorted; the cable segment decomposition area is used to decompose the cable segments into a mixture of metals and plastics and sort them. The cable segment decomposition area is connected to the cable segment temporary storage area 4 by a feeder. The feeder is an AGV robot. The feeder can automatically transport the transfer box containing the cable segments in the cable segment temporary storage area 4 to the cable segment decomposition area according to the set program; the classification receiving area is used for classified storage of steel armor, conductors, copper shielding layers, and plastics (outer sheaths, polyethylene, and other plastics) after decomposition and sorting. The classification receiving area 21 is divided into several independent receiving stations, and each receiving station is placed with a pallet; the coding and transportation area is connected to the classification receiving area 21 and the storage area 27 through a conveyor line, which is used to classify, code, and transport the pallets in the classification receiving area 21, so as to classify and store the pallets containing steel armor, conductors, copper shielding layers, and plastics.

[0030] It should be noted that the steel armor, conductor, copper shielding layer, and plastic described in this embodiment are all broken pieces or fragments.

[0031] Specifically, the steel grabber 2 is an automatic robot that can grab the cables in the stockpiling area 1 and transport them to the pre-processing area according to a set program. Figure 1 As shown, a gantry shear 3 is provided at the pre-processing area, and the cable can be cut into segments by the gantry shear 3. The gantry shear 3 is connected to the cable segment temporary storage area 4 through a conveyor belt, and the cable segment is transported to a designated transfer box through the conveyor belt.

[0032] The cable segment decomposition area is located on one side of the cable segment temporary storage area 4 to rationally utilize the space in the factory. The cable segment decomposition area contains multiple levels of sorting stations, such as Figure 2As shown, the cable segment decomposition area includes a first conveyor line 5, a shredder group, a second conveyor line 7, a magnetic separator group, a third conveyor line 11, a fourth conveyor line 12, a gravity separator 13, an air separator 14, an eddy current separator 15, a color separator 16, a screw conveyor 17 and a fifth conveyor line 18. The first conveyor line 5 is located on one side of the cable segment temporary storage area 4. One end of the first conveyor line 5 is connected to the feed port of the first shredder 6 to convey the cable segments to the first shredder 6 for initial decomposition. An automatic flipping mechanism is installed at one end of the first conveyor line 5 away from the first shredder 6. After the feeder transports the transfer box to the automatic flipping mechanism, the automatic flipping mechanism can automatically flip the transfer box, so that the cable segments in the transfer box are placed on the first conveyor line 5. After the flipping is completed, the automatic flipping mechanism will automatically reset, and the feeder can put the empty transfer box back to the cable segment temporary storage area 4.

[0033] The first shredder 6 can shred the input cable segments and discharge them. The discharge port of the first shredder 6 is connected to the feed port of the second shredder 9 through the second conveyor line 7, and a first magnetic separator 8 is arranged above the second conveyor line 7. The first magnetic separator 8 is a belt magnetic separator, which can sort the mixed material after the initial decomposition to achieve the sorting of the steel armor and the metal plastic mixture. A third conveyor line 11 is arranged on one side of the second conveyor line 7. The discharge end of the first magnetic separator 8 is connected to the third conveyor line 11, and one end of the third conveyor line 11 is connected to the classification receiving line. The steel armor receiving station in the zone 21 is connected to realize the receiving cache of the steel armor; the second shredder 9 is used to perform secondary decomposition on the mixed material after the initial decomposition and sorting, so as to improve the effective separation between metal and plastic and improve the sorting effect. The discharge port of the second shredder 9 is connected to the feed port of the gravity separator 13 through the fourth conveyor line 12. A second magnetic separator 10 is provided above the fourth conveyor line 12, and the discharge end of the second magnetic separator 10 is also connected to the third conveyor line 11 to realize the secondary sorting of the steel armor and improve the sorting effect of the steel armor.

[0034] The gravity separator 13 performs sorting based on the density difference between materials. The top and bottom of the gravity separator 13 are provided with discharge ports, and the top of the gravity separator 13 is provided with a feed port. The bottom side wall of the gravity separator 13 is also provided with an air inlet. The air flow is used to blow light materials away from the top, while heavy materials are deposited at the bottom of the gravity separator 13 and discharged, so as to achieve the sorting of conductors (such as copper cores) and metal mixtures. The bottom discharge port of the gravity separator 13 is connected to the conductor receiving station in the classification receiving area 21 through the fifth conveyor line 18 to achieve conductor receiving buffering. The top discharge port of the gravity separator 13 is connected to the feed port of the air separator 14 through a pipeline to discharge the metal mixture into the air separator 14.

[0035] The air separator 14 has two discharge ports, namely, a discharge port for thin and light materials (i.e., rubber strips, hemp ropes, fiber fillings, etc.) and a discharge port for metal mixtures, which are used for discharging thin and light materials and metal mixtures respectively. The discharge port for thin and light materials of the air separator 14 is connected to the thin and light material receiving station in the classification receiving area 21 through a screw conveyor 17 to realize the receiving buffer of thin and light materials. The discharge port for metal mixture of the air separator 14 is connected to the feed port of the eddy current separator 15 through the screw conveyor 17 to feed the metal mixture into the eddy current separator 15.

[0036] The eddy current separator 15 uses an alternating magnetic field to separate light and thin copper (copper shielding layer) and plastic mixtures based on the difference in electrical conductivity of the materials. The light and thin copper discharge end of the eddy current separator 15 is connected to the light and thin copper receiving station in the classification receiving area 21 through a screw conveyor 17. The plastic mixture discharge end of the eddy current separator 15 is connected to the feed port of the color sorter 16 through the screw conveyor 17, so that the color sorter 16 can be used to sort the plastic mixture. The color sorter 16 contains an air nozzle and a sensor, which can control the opening and closing of the air nozzle according to the color of the plastic particles, so as to use the jet to blow away the falling particles of the specified color, thereby realizing the sorting of particles of different colors, so as to realize the sorting of different types of plastics.

[0037] Two color sorters 16 are provided in sequence, and two adjacent color sorters 16 are connected in series. The discharge port of the color sorter 16 is connected to the plastic receiving station in the classification receiving area 21 through a screw conveyor 17. In this embodiment, two color sorters 16 are used to sort the plastic mixture into three categories: black outer sheath, black and white cross-linked polyethylene, and non-black plastic mixture, and three corresponding receiving stations are set in the classification receiving area 21.

[0038] It is understandable that in actual applications, the plastic mixture can also be sorted by other classifications, which can be specifically set according to the actual color types and a specified number of color sorters 16 can be used. No excessive restrictions are made here.

[0039] A number of independent material receiving stations are provided at the classification receiving area 21, such as a steel armor receiving station, a conductor receiving station, a light and thin material receiving station, a light and thin copper receiving station and a number of plastic receiving stations. A sixth conveyor line 19 is provided at each receiving station. The sixth conveyor line 19 is a roller conveyor line for controlling the movement of the receiving pallet. A coding and transporting area is provided on the side of the classification receiving area 21 away from the cable segment decomposition area. The coding and transporting area includes a seventh conveyor line 20, an eighth conveyor line 24, a transporter 23, a sorting and coding machine 25 and a stacker 26. Among them, the seventh conveyor line 20 is perpendicular to all the sixth conveyor lines 19 of the classification receiving area 21. A transporter 23 is provided on the seventh conveyor line 20. The transporter 23 can unload and transport the pallets on the designated sixth conveyor line 19. There is at least one pallet buffer area 22 near the seventh conveyor line 20. A number of pallets are placed in the pallet buffer area 22. The transporter 23 can add empty pallets to the designated receiving area. The seventh conveyor line 20 is connected to the storage area 27 through the eighth conveyor line 24. The seventh conveyor line 20 is perpendicular to the eighth conveyor line 24. The eighth conveyor line 24 is a roller conveyor line for conveying pallets. The overall coding machine 25 is arranged on the eighth conveyor line 24 to code and mark the pallets on the eighth conveyor line 24. The stacker 26 is located near the storage area 27. The stacker 26 is used to transport the coded pallets on the eighth conveyor line 24 and transport the pallets to designated places according to the coding marks to realize the classified storage of pallets. The storage area 27 contains a number of storage shelves.

[0040] In order to improve the space utilization rate in the factory, the storage area 27 is arranged on a side of the cable segment decomposition area away from the cable segment temporary storage area 4.

[0041] Example 3 In another typical embodiment of the present invention, a sorting method is proposed, which utilizes the sorting line in Example 2, as follows: The steel grabber 2 in the stockpiling area 1 grabs the cables in the stockpiling area 1 according to the set program and conveys them to the gantry shear 3 in the pre-processing area. The gantry shear 3 cuts the cables into segments, and the cable segments are conveyed to the designated transfer box in the cable segment temporary storage area 4 through the conveyor belt. The feeder automatically transports the transfer box containing the cable segments in the cable segment temporary storage area 4 to the cable segment decomposition area according to the set program, and places the transfer box on the automatic flipping mechanism at the end of the first conveyor line 5. The automatic flipping mechanism automatically flips the transfer box, so that the cable segments in the transfer box are placed on the first conveyor line 5. After the flipping is completed, the automatic flipping mechanism automatically resets, and the feeder re-places the empty transfer box to the cable segment temporary storage area 4; The first conveyor line 5 conveys the cable segments to the first shredder 6, and the first shredder 6 performs primary decomposition on the input cable segments and discharges the mixture onto the second conveyor line 7. While the second conveyor line 7 conveys the mixture to the second shredder 9, the first magnetic separator 8 sorts the mixture after the primary decomposition to achieve the separation of the steel armor and the metal-plastic mixture. The steel armor is conveyed to the tray at the steel armor receiving station of the classification receiving area 21 through the third conveyor line 11, and the metal-plastic mixture is conveyed to the second shredder 9 by the second conveyor line 7 for secondary decomposition. The secondary decomposed mixture is conveyed to the gravity separator 13 through the fourth conveyor line 12. During the conveying, the second magnetic separator 10 on the fourth conveyor line 12 performs secondary separation on the metal-plastic mixture to achieve secondary separation of the steel armor, and discharges the secondary separated steel armor onto the third conveyor line 11, and is conveyed to the tray at the steel armor receiving station of the classification receiving area 21 through the third conveyor line 11. The other mixtures enter the gravity separator 13. The gravity separator 13 uses air flow to blow light materials away from the top, and the blown light materials are guided to the air separator 14 through the pipeline, and the heavy materials are deposited at the bottom of the gravity separator 13 and discharged to the tray of the conductor receiving station in the classification receiving area 21 through the fifth conveyor line 18; the separator 14 sorts the input mixed materials, and the light and thin materials are discharged to the tray of the light and thin material receiving station in the classification receiving area 21 through the screw conveyor 17, and the metal mixture is discharged to the eddy current separator 15 through the screw conveyor 17; The eddy current separator 15 uses an alternating magnetic field to separate the thin copper and plastic mixture based on the different electrical conductivity of the materials. The thin copper is discharged to the tray of the thin copper receiving station in the classification receiving area 21 through the screw conveyor 17. The plastic mixture is discharged to the color sorter 16 through the screw conveyor 17. The color sorter 16 is used to sort the plastic mixture. The sorted plastics of different colors are classified according to the corresponding colors and discharged to the corresponding plastic receiving station tray in the classification receiving area 21 through the screw conveyor 17. The conveyor 23 on the seventh conveyor line 20 moves to one side of the designated receiving station, and the sixth conveyor line 19 of the designated receiving station is actuated, so that the pallet moves to the conveyor 23, and the conveyor 23 transfers the pallet to the eighth conveyor line 24, and the pallet loaded with materials is transported to the storage area 27 by the eighth conveyor line 24. At the same time, the conveyor 23 transports the pallet in the pallet buffer area 22 to the designated receiving station; During the transportation of pallets on the eighth conveyor line 24, the overall coding machine 25 codes and marks the pallets on the eighth conveyor line 24, and the stacker 26 transports the coded pallets on the eighth conveyor line 24 and transports and places the pallets to designated places according to the coding marks to achieve classified storage of the pallets.

[0042] Through the above operations, the cables can be automatically decomposed, classified and stored, with a high overall degree of automation and low labor intensity. Different metals and plastics can be classified and stored with good sorting effect and high efficiency, thus avoiding the waste of non-metallic materials and improving economic benefits. The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste cable sorting system, comprising: A shredder unit, characterized in that the shredder unit is sequentially connected to a magnetic separator, a gravity separator (13), a pneumatic separator (14), an eddy current separator (15) and a color sorting unit; the feed port and the discharge port of the shredder unit are both connected to a conveyor line; the magnetic separator is arranged on the conveyor line at the discharge port of the shredder unit; and further comprises a classification receiving area (21); the magnetic separator unit, the gravity separator (13), the pneumatic separator (14), the eddy current separator (15) and the color sorting unit are all connected to corresponding receiving stations at the classification receiving area (21) via the conveyor line.

2. The waste cable sorting system according to claim 1, characterized in that: The shredder unit comprises a first shredder (6), the feed port of the first shredder (6) is connected to a first conveyor line (5), the discharge port of the first shredder (6) is connected to a second shredder (9) via a second conveyor line (7), the discharge port of the second shredder (9) is connected to a feed port of a gravity separator (13) via a fourth conveyor line (12), a magnetic separator is respectively provided on the second conveyor line (7) and the fourth conveyor line (12), and the discharge ends of all the magnetic separators are connected to a classification receiving area (21) via a third conveyor line (11).

3. The waste cable sorting system according to claim 1, characterized in that: The mixture discharge port at the top of the gravity separator (13) is connected to the feed port of the wind separator (14) through a pipeline, and the conductor discharge port at the bottom of the gravity separator (13) is connected to the classification receiving area (21) through a fifth conveying line (18).

4. The waste cable sorting system according to claim 1, characterized in that: The thin material discharge port of the air separator (14) is connected to the classification receiving area (21) via a screw conveyor (17), and the metal mixture discharge port of the air separator (14) is connected to the feed port of the eddy current separator (15) via a screw conveyor (17).

5. The waste cable sorting system according to claim 1, characterized in that: The thin copper discharge end of the eddy current separator (15) is connected to the classification receiving area (21) via a screw conveyor (17), the plastic mixture discharge end of the eddy current separator (15) is connected to the feed port of the color sorting unit via a screw conveyor (17), and the different color discharge ports of the color sorting unit are respectively connected to the classification receiving area (21) via a screw conveyor (17).

6. A sorting line, characterized in that: include: Stockpile area (1); A pre-processing area for cutting cables into sections; The cable segment temporary storage area (4) is connected to the pre-treatment area via a conveyor belt, and a transfer box is placed in the cable segment temporary storage area (4); The cable segment decomposition area is connected to the cable segment temporary storage area (4) via a feeder and is provided with the waste cable sorting system as claimed in claim 1, for decomposing the cable segments into a mixture of metal and plastic and sorting them in multiple stages; The classification receiving area (21) is connected to the cable segment decomposition area through a conveyor line group, and contains a plurality of independent receiving stations for classified storage of steel armor, conductors, copper shielding layers, and plastics after sorting; The coding and transporting area is connected to the material classification and receiving area (21) and the storage area (27) through a conveyor line.

7. The sorting line according to claim 6, characterized in that: The stockpiling area (1) and the pre-treatment area are both arranged outside the factory area. A steel grabber (2) is provided in the stockpiling area (1), and the steel grabber (2) is an automatic robot. A gantry shear (3) is provided in the pre-treatment area. The feed inlet of the first shredder (6) is connected to the cable segment temporary storage area (4) through a first conveyor line (5).

8. The sorting line according to claim 6, characterized in that: A sixth conveyor line (19) is provided at each receiving station, the coding and transporting area includes a seventh conveyor line (20), the seventh conveyor line (20) is perpendicular to all the sixth conveyor lines (19), a transporter (23) is provided on the seventh conveyor line (20), at least one pallet buffer area (22) is provided near the seventh conveyor line (20), the seventh conveyor line (20) is connected to the storage area (27) through an eighth conveyor line (24), an integral coding machine is provided on the eighth conveyor line (24), and a stacker (26) is provided near the storage area (27).

9. A sorting method, characterized in that: The sorting line according to any one of claims 6 to 8 is used, specifically as follows: The steel grabber (2) grabs the cables in the stockpiling area (1) and takes them to the pre-processing area for segment cutting. The cable segments are then conveyed to the cable segment temporary storage area (4) via a conveyor belt. The feeder automatically transports the transfer box containing the cable segments to the cable segment decomposition area for decomposition and sorting, and the sorted metals and plastics are classified and cached in designated trays at the classification receiving area (21); The pallet containing metal / plastic is transported to the storage area (27) via the eighth conveyor line (24). During the transportation of the pallet, the integral coding machine codes the pallet, and the stacker (26) moves the coded pallet to a designated place for storage.

10. The sorting method according to claim 9, characterized in that: The decomposition and sorting process of metals and plastics is as follows: The cable segments are conveyed to the first shredder (6) for primary decomposition, the mixed material is discharged and conveyed through the second conveyor line (7), and at the same time, the magnetic separator sorts the mixed material after the primary decomposition, the steel armor is conveyed to the classification receiving area (21) through the third conveyor line (11), and the metal-plastic mixture enters the second shredder (9) for secondary decomposition; The secondary decomposed mixed material is conveyed via a fourth conveyor line (12), while the magnetic separator performs secondary sorting on the metal-plastic mixture. The secondary sorted steel armor is conveyed via a third conveyor line (11) to a classification receiving area (21), and the other mixed materials enter a gravity separator (13); The gravity separator (13) uses air flow to blow light materials away from the top and guide them into the air separator (14), and the heavy materials are discharged from the bottom of the gravity separator (13) to the classification receiving area (21); the separator sorts the input mixed materials, and the light and thin materials are discharged to the classification receiving area (21), the metal mixture is discharged to the eddy current separator (15) for sorting, the light and thin copper is discharged to the classification receiving area (21), and the plastic mixture is discharged to the color sorter (16) for sorting. The sorted plastics are classified according to color and discharged to the classification receiving area (21).

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