A material sorting system

Abstract

The application discloses a material sorting system, which comprises: a first sorting device for completing one-time sorting; a second sorting device connected with the end of the first sorting device, comprising a plurality of sorting devices arranged along a straight line to complete multiple sorting; a storage device comprising a plurality of storage bins arranged along a straight line, all the storage bins being located on the same side of the second sorting device; a first packaging device for completing material extrusion packaging; a storage feeding device for realizing material conveying between the second sorting device and the storage device; a storage discharging device for realizing material conveying between the storage device and the first packaging device; wherein the conveying direction of the second sorting device, the arrangement direction of the storage bins of the storage device and the feeding direction of the first packaging device are arranged in parallel with each other. The feeding ends of the second sorting device, the storage device and the first packaging device are arranged in parallel with each other, so that the layout is concentrated and the floor area is reduced.

Description

Technical Field

[0001] This invention relates to the field of plastic waste recycling and sorting, and in particular to a material sorting system. Background Technology

[0002] Plastic products are widely used in modern society due to their unique properties and economic efficiency. However, because they are non-degradable, they are also prone to causing pollution. Therefore, plastic products are generally recycled, which requires sorting for subsequent classification and processing. Since multiple sorting stages are required, sorting systems typically occupy a large area, resulting in significant site costs. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a material sorting system with the advantage of reducing floor space.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A material sorting system, comprising:

[0006] One sorting machine completes one sorting operation;

[0007] The second sorting equipment is connected to the end of the first sorting equipment and includes several sorting devices arranged in a straight line to complete multiple sorting operations.

[0008] The storage equipment includes several storage bins arranged in a straight line, all of which are located on the same side of the two-stage sorting equipment;

[0009] The first packaging equipment is used to complete the extrusion and packaging of materials;

[0010] Material feeding equipment is used to transport materials between the secondary sorting equipment and the storage equipment;

[0011] The material storage and discharging equipment is used to realize the material conveying between the material storage equipment and the first packaging equipment;

[0012] The conveying direction of the second sorting equipment, the arrangement direction of the storage bins of the storage equipment, and the feeding direction of the first packaging equipment are arranged in parallel to each other.

[0013] By adopting the above technical solution, the feeding ends of the system's core equipment—the secondary sorting equipment, the storage equipment, and the primary packaging equipment—are arranged in parallel to each other, thus reducing the floor space required.

[0014] Optionally, the two-stage sorting equipment includes a two-stage elevator, a two-stage sorting device, a three-stage sorting device, and a four-stage sorting device; the sorting positions of the two-stage sorting device, the three-stage sorting device, and the four-stage sorting device are sequentially lower.

[0015] By adopting the above technical solution, the sorting positions of the secondary, tertiary and quaternary sorting devices are successively lowered, and no connecting parts are needed during the material transportation process, which shortens the overall length of the two sorting devices and helps to reduce the floor space occupied.

[0016] Optionally, a manual sorting station is provided at the fourth-level sorting device; the manual sorting station is used to sort out garbage and semi-transparent materials.

[0017] By adopting the above technical solution, the cost of mechanical sorting of garbage and semi-transparent materials is high, and additional detection equipment needs to be added to the secondary sorting equipment. This will not only increase the equipment, but also increase the overall length of the secondary sorting equipment. The above problems can be solved by manually sorting out garbage and semi-transparent materials.

[0018] Optionally, the storage and discharging equipment includes a first conveying device, a second conveying device, and a third conveying device; the first conveying device and the second conveying device are located directly below the discharge port of the storage silo; the conveying directions of the first conveying device and the second conveying device are on the same straight line and in the same direction as the arrangement direction of the storage silo; the conveying direction of the third conveying device is perpendicular to the arrangement direction of the storage silo; the third conveying device is located between the first conveying device and the second conveying device, and its conveying starting point connects to the conveying ending points of both the first conveying device and the second conveying device, and its conveying ending point connects to the feeding starting point of the first packaging device; the third conveying device passes through the bottom of the two-stage sorting equipment.

[0019] By adopting the above technical solution, the first conveying device and the second conveying device are located directly below the discharge port of the storage silo, and the third conveying device is located between the first conveying device and the second conveying device and passes through the bottom of the two sorting equipment. This is to avoid generating additional floor space and to reduce the material packaging and transportation path in the storage silo, thereby improving packaging efficiency.

[0020] Optionally, the first sorting device includes a first sorting mechanism; the first sorting mechanism includes a feeding conveyor belt and a discharging conveyor belt that are perpendicular to each other; the material enters the second sorting device after passing through the feeding conveyor belt and the discharging conveyor belt in sequence; the conveying direction of the first discharging conveyor belt is perpendicular to the conveying direction of the second sorting device.

[0021] By adopting the above technical solution, the feeding conveyor belt and the discharging conveyor belt of the sorting mechanism are perpendicular to each other, which helps to reduce the overall length of the sorting mechanism and thus reduce the floor space occupied by the sorting system.

[0022] Optionally, the first packaging equipment includes a packaging elevator and a packaging machine; the packaging elevator is used to feed materials to the packaging machine and the conveying directions of the packaging elevator and the second sorting equipment are parallel; the conveying direction of the packaging elevator is perpendicular to the length direction of the packaging machine.

[0023] By adopting the above technical solution, the conveying direction of the packing elevator is perpendicular to the length direction of the packing machine, which helps to reduce the overall length of the first packing equipment, thereby reducing the floor space occupied by the sorting system.

[0024] Optionally, the material feeding equipment includes a first material feeding device; the conveying end of the first material feeding device is provided with a material distribution mechanism; the material distribution mechanism includes a material distribution component and a pair of material feeding pipes; the material distribution component causes the pair of material feeding pipes to discharge material alternately; the pair of material feeding pipes are respectively connected to the two material storage bins.

[0025] By adopting the above technical solution, since the amount of material passing through the first storage feeding device is extremely large, while the amount of material packaged at the same time during subsequent packaging is fixed, the weight of the material in the storage bin needs to be accurately controlled. Therefore, it is necessary to avoid the situation where the material in the storage bin continues to be fed when the amount of material in the storage bin reaches the packaging amount. This effect can be achieved by switching the storage feeding pipe through the material distribution component so that the material enters another storage bin.

[0026] Optionally, the material storage and feeding equipment includes a second material storage and feeding device; the second material storage and feeding device includes a hopper support, a hopper that is lifted and lowered on the hopper support, and a hopper lifting drive mechanism for driving the hopper to lift and lower; the hopper lifting drive mechanism cooperates with the hopper support to drive the hopper to lift and lower, and at the end of the rising path, it drives the hopper to flip and pour material into the storage bin.

[0027] By adopting the above technical solution, materials other than conventional bottles cannot be transported by flow blowing. Therefore, these materials are transported by hopper. When the material in the hopper reaches a certain amount, the hopper lifting drive mechanism drives the hopper to rise. When the hopper is about to reach the end point during the rising process, it drives the hopper to flip towards the storage bin to complete the unloading.

[0028] Optionally, it also includes a direct pressure feeding device; the direct pressure feeding device includes a direct pressure feeding trough and a direct pressure conveying device; the direct pressure feeding trough is used to stack materials and its length direction is on the same straight line as the feeding direction of the first packaging equipment; the direct pressure conveying device is used to convey the materials in the direct pressure feeding trough along the length direction of the direct pressure feeding trough to the feeding starting point of the first packaging equipment.

[0029] By adopting the above technical solution, everyday household materials (washbasins, toys, etc.) enter the direct pressure feeding trough. The direct pressure conveying device then carries the materials along the length of the trough to the feeding starting point of the first packaging equipment for packaging. In this way, the first and second sorting equipment sort and package the washing materials (beverage bottles, lunch boxes, laundry detergent bottles, etc.), while the direct pressure feeding equipment transports and packages the everyday household materials (washbasins, toys, etc.). This material sorting system can cover the sorting and processing of most plastic materials, with complete functions. At the same time, the direct pressure feeding trough is used to stack materials, and its length is on the same straight line as the feeding direction of the first packaging equipment, which increases functionality while minimizing the floor space occupied by the entire system.

[0030] Optionally, a second packaging device is also included; the direct pressure conveying device is used to convey the material in the direct pressure feeding trough along the length of the direct pressure feeding trough to the feeding starting point of the first packaging device or the feeding starting point of the second packaging device.

[0031] By adopting the above technical solution, when the first packaging equipment cannot meet the large packaging volume of daily household materials (washbasins, toys, etc.), the second packaging equipment can be activated. The direct pressure feeding equipment can be used in conjunction with the second packaging equipment, which provides flexibility in use. At the same time, the direct pressure feeding trough is used to stack materials and its length direction is on the same straight line as the feeding direction of the first packaging equipment, which increases the functionality while minimizing the floor space occupied by the entire system. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention.

[0033] Figure 2 This is a schematic diagram of the hidden walking platform of the present invention.

[0034] Figure 3 This is a schematic diagram of the structure of the first-stage sorting device and the second-stage sorting device of the present invention.

[0035] Figure 4 This is the invention Figure 3 A structural diagram from another angle.

[0036] Figure 5This is a schematic diagram of the structure of the material feeding device, the material storage device, the material discharging device, the first packaging device, and the direct pressure feeding device of the present invention.

[0037] Figure 6 This is a schematic diagram of the structure of the material storage and discharging device, the first packaging device, and the direct pressure feeding device of the present invention.

[0038] Figure 7 This is a schematic diagram of the structure of the first material storage and feeding device of the present invention.

[0039] Figure 8 This is a schematic diagram of the material dispensing component of the present invention.

[0040] Figure 9 This is a cross-sectional structural diagram of the material dispensing component of the present invention.

[0041] Figure 10 This is a schematic diagram of the structure of the second material feeding device and the material feeding equipment of the present invention.

[0042] Figure 11 This is a schematic diagram of the structure of the second material storage and feeding device of the present invention.

[0043] Figure 12 This is a schematic diagram of the hopper structure of the present invention.

[0044] Figure 13 This is a structural schematic diagram of the direct pressure feeding device of the present invention.

[0045] Figure 14 This is a cross-sectional structural schematic diagram of a direct pressure feeding device in another embodiment of the present invention.

[0046] Figure 15 This is a cross-sectional structural schematic diagram of a direct pressure feeding device in another embodiment of the present invention.

[0047] Explanation of reference numerals in the attached figures:

[0048] 10. One hoist;

[0049] 20. One sorting mechanism; 21. One feeding conveyor belt; 22. First conveyor belt; 23. Second conveyor belt; 24. One optical sorter; 25. One air-blowing sorter;

[0050] 30. Second-stage elevator; 31. First-stage elevator of the second stage; 32. Second-stage elevator of the second stage;

[0051] 40. Secondary sorting device; 41. Secondary first conveyor belt; 42. Secondary second conveyor belt; 43. Secondary optical sorter; 44. Secondary air-blowing sorter;

[0052] 50. Three-stage sorting device; 51. Three-stage conveyor belt; 52. Three-stage optical sorter; 53. Three-stage air-blowing sorter;

[0053] 60. Four-stage sorting device; 61. Four-stage conveyor belt; 62. Four-stage air-blowing sorting machine;

[0054] 70. First material feeding device; 71. Material feeding conveyor belt; 72. Main ventilation pipe; 73. Material feeding fan; 74. Material feeding hopper; 75. Material distribution assembly; 751. Feed distribution pipe; 7510. Distribution inlet; 7511. Distribution outlet; 752. Material distribution drive bracket; 753. Material distribution drive assembly; 7531. Material distribution drive cylinder; 7532. Drive connecting rod; 754. Drive center shaft; 755. Switching plate; 76. Material feeding pipe;

[0055] 80. Second material feeding device; 81. Main slide rail; 82. Auxiliary slide rail; 83. Material weighing device; 84. Hopper; 841. Sliding bracket; 842. Auxiliary pulley; 843. Main pulley; 85. Hopper lifting drive mechanism;

[0056] 90. Third material feeding device;

[0057] 100. Storage silos;

[0058] 110. Material storage and discharging equipment; 111. First conveying device; 112. Second conveying device; 113. Third conveying device;

[0059] 120. Direct pressure feeding equipment; 121. Direct pressure feeding trough; 1210. Direct pressure discharge port; 1211. Drive port; 122. Direct pressure conveying device; 123. Gate cylinder; 124. Gate; 1241. Gate frame; 1242. Main gate plate; 1243. Pressure applying component; 12431. Pressure applying drive electric cylinder; 12432. Hinge seat;

[0060] 130. Packaging elevator;

[0061] 140. Packaging machine;

[0062] 150. Walking platform;

[0063] 160. Import end material hopper. Detailed Implementation

[0064] The following is in conjunction with the appendix Figures 1-15 The present invention will be described in further detail below.

[0065] Example 1: A material sorting system is disclosed, referencing Figure 1 and Figure 2The system includes a walking platform 150, a primary sorting device, a secondary sorting device, a storage feeding device, a storage device, a storage discharging device 110, a primary packaging device, and a direct pressure feeding device 120. The secondary sorting device includes a secondary elevator 30, a secondary sorting device 40, a tertiary sorting device 50, and a quaternary sorting device 60. The storage device includes nine linearly arranged storage bins 100. The storage device includes two primary storage feeding devices 70, four secondary storage feeding devices 80, and one tertiary storage feeding device 90. Each primary storage feeding device 70 is paired with two storage bins 100, each secondary storage feeding device 80 is paired with one storage bin 100, and each tertiary storage feeding device 90 is paired with one storage bin 100. The conveying direction of the secondary sorting device, the arrangement direction of the storage bins 100, and the feeding direction of the primary packaging device are arranged parallel to each other.

[0066] During operation, food washing materials (beverage bottles, lunch boxes, laundry detergent bottles, etc.) are sorted sequentially through a first-stage sorting device, a second-stage elevator 30, a second-stage sorting device 40, a third-stage sorting device 50, and a fourth-stage sorting device 60. They then enter the storage device via the feeding device and finally reach the first packaging device for compression packaging via the discharging device 110. Household plastic materials (washbasins, toys, etc.) are fed through the direct-pressure feeding device 120 to the first packaging device for compression packaging. Additionally, a walking platform 150 facilitates operator access for inspection, maintenance, and standing.

[0067] refer to Figure 3 and Figure 4 The sorting equipment includes a lift 10, a first conveyor belt 21, a storage conveyor belt, a light separator 24, and a blower sorter 25. The lift 10 and the first conveyor belt 21 have the same conveying direction. The light separator 24 is mounted on the first conveyor belt 21. The storage conveyor belt includes a first conveyor belt 22 and a second conveyor belt 23. The first and second conveyor belts 22 and 23 are parallel to each other and perpendicular to the first conveyor belt 21. The blower sorter 25 is located at the end of the first conveyor belt 21 and is used to blow the corresponding plastic material onto the first conveyor belt 22 or the second conveyor belt 23. Here, the light separator 24 distinguishes between non-PET and PET plastic materials, and the blower sorter 25 blows PET plastic materials onto the first conveyor belt 22 and non-PET plastic materials onto the second conveyor belt 23.

[0068] refer to Figure 3 and Figure 4The secondary elevator 30 includes two parallel primary elevators 31 and 32. The secondary elevators 30 are perpendicular to the primary storage conveyor. The primary primary elevator 31 lifts PET plastic materials conveyed by the primary conveyor belt 22, and the secondary primary elevator 32 lifts non-PET plastic materials conveyed by the secondary conveyor belt 23. Furthermore, the sorting positions of the secondary sorting device 40, tertiary sorting device 50, and quaternary sorting device 60 decrease sequentially.

[0069] refer to Figure 3 and Figure 4 The secondary sorting device 40 includes a secondary first conveyor belt 41, a secondary second conveyor belt 42, a secondary optical sorter 43, and a secondary air-blowing sorter 44. The secondary first conveyor belt 41 and the secondary second conveyor belt 42 are arranged parallel to each other. The conveying direction of the secondary first conveyor belt 41 and the secondary first elevator 31 is the same. PET plastic material conveyed by the secondary first elevator 31 falls from top to bottom onto the secondary first conveyor belt 41. The conveying direction of the secondary second conveyor belt 42 and the secondary second elevator 32 is the same. Non-PET plastic material conveyed by the secondary second elevator 32 falls from top to bottom onto the secondary first conveyor belt 41. The secondary optical sorter 43 is located on the secondary first conveyor belt 41 and the secondary second conveyor belt 42. The secondary air-blowing sorter 44 is located at the end of the secondary first conveyor belt 41 and the secondary second conveyor belt 42. The secondary air-blowing sorter 44 blows specific plastic bottles (such as Nongfu Spring bottles) and other bottles from the PET plastic material on the secondary first conveyor belt 41 into two first storage feeding devices 70, and blows detergent bottles from the secondary second conveyor belt 42 into the second storage feeding device 80. Other plastic materials enter the tertiary sorting device 50. In other embodiments, the secondary first conveyor belt 41 and the secondary second conveyor belt 42 can be the same conveyor belt, and can be divided into two areas corresponding to the secondary first conveyor belt 41 and the secondary second conveyor belt 42 by a partition in the middle of the conveyor belt.

[0070] refer to Figures 7-9The first material feeding device 70 includes a material feeding conveyor belt 71, a material feeding fan 73, a main ventilation pipe 72, and a material distribution mechanism. The material feeding conveyor belt 71 is located directly below the secondary sorting device 40, and its conveying direction is parallel to that of the secondary sorting device 40. The main ventilation pipe 72 is a circular pipe with an upward arc bend at the end, and it is located in a vertical plane perpendicular to the conveying direction of the material feeding conveyor belt 71. The material feeding fan 73 is fixed to the front end of the main ventilation pipe 72 and directs material to the material feeding conveyor belt 72. Air is blown into the main ventilation pipe 72; a material feed hopper 74 is set at the horizontal position at the front of the main ventilation pipe 72; the material feed hopper 74 receives the plastic material conveyed by the storage feed conveyor belt 71 and enters the main ventilation pipe 72; the material distribution mechanism is connected to the end of the main ventilation pipe 72 away from the storage feed fan 73; during operation, the storage feed fan 73 injects airflow into the main ventilation pipe 72, and the airflow carries the plastic material conveyed from the storage feed conveyor belt 71 and entering the main ventilation pipe 72 to the material distribution mechanism.

[0071] refer to Figures 7-9The material distribution mechanism includes a material distribution component 75 and a pair of material storage inlet pipes 76; the material distribution component 75 causes material to be alternately discharged from the pair of material storage inlet pipes 76; the pair of material storage inlet pipes 76 are respectively connected to two material storage bins 100. The material distribution component 75 includes a Y-shaped material distribution pipe 751, a switching plate 755 oscillatingly disposed in the material distribution pipe 751, and a material distribution drive component 753 for driving the switching plate 755 to oscillate back and forth. The feed distribution pipe 751 is connected to the end of the main ventilation pipe 72 away from the storage feed fan 73; the feed distribution pipe 751 has a distribution feed port 7510 at the bottom and two distribution discharge ports 7511 at the top; a drive central shaft 754 is rotatably connected inside the feed distribution pipe 751; a switching plate 755 is fixed on the drive central shaft 754; a distribution drive bracket 752 is on the outer side wall of the feed distribution pipe 751; the distribution drive assembly 753 includes a distribution drive cylinder 7531 hinged to the distribution drive bracket 752 and a drive connecting rod 7532 hinged to the piston rod end of the distribution drive cylinder 7531; the other end of the drive connecting rod 7532 is fixedly connected to the end of the drive central shaft 754. During operation, the material distribution drive cylinder 7531 drives its piston rod to extend and retract, which in turn drives the drive central shaft 754 to rotate reciprocally via the drive connecting rod 7532. This causes the switching plate 755 to swing, and the swinging switching plate 755 connects the material distribution inlet 7510 with one of the material distribution outlets 7511. Additionally, the storage hopper 100, which cooperates with the first material storage and feeding device 70, is equipped with a weighing device. When the weighing device reaches a set amount (packing quantity), the storage hopper 100 opens its lower opening to store material. In other embodiments, the material feeding mechanism may include a material feeding pipe 76 and a rotation drive assembly. The material feeding pipe 76 is rotatably connected to the end of the main ventilation pipe 72 away from the material feeding fan 73. The rotation drive assembly is used to drive the material feeding pipe 76 to rotate on the horizontal plane, thereby changing the outlet position of the material feeding pipe 76. The rotation drive assembly includes a rotation drive motor fixed on the main ventilation pipe 72, a drive gear fixed on the output shaft of the rotation drive motor, and a driven gear ring fixed on the outer surface of the material feeding pipe 76. The drive gear meshes with the driven gear ring.

[0072] Since the amount of material passing through the first material feeding device 70 is extremely large, while the amount of material packaged simultaneously during subsequent packaging is fixed, the weight of the material in the storage bin 100 needs to be accurately controlled. Therefore, it is necessary to avoid the situation where the material in the storage bin 100 continues to be fed when the amount of material in the storage bin 100 reaches the packaging amount. This effect can be achieved by switching the material feeding pipe 76 through the material distribution component so that the material enters another storage bin 100.

[0073] refer to Figure 3 and Figure 4The three-stage sorting device 50 includes a three-stage conveyor belt 51, a three-stage optical sorter 52, and a three-stage air-blowing sorter 53. The three-stage conveyor belt 51, the second-stage first conveyor belt 41, and the second-stage second conveyor belt 42 all have the same conveying direction. The three-stage optical sorter 52 is installed on the three-stage conveyor belt 51. The three-stage air-blowing sorter 53 is located at the end of the three-stage conveyor belt 51. The plastic materials conveyed by the second-stage second conveyor belt 42 and the second-stage first conveyor belt 41 fall from top to bottom onto the three-stage conveyor belt 51. The three-stage air-blowing sorter 53 blows the opaque white plastic bottles into the second storage and feeding device 80, and the remaining plastic bottles enter the four-stage sorting device 60.

[0074] refer to Figures 10-12 The second material feeding device 80 includes a hopper support, a hopper 84 that is lifted and lowered on the hopper support, and a hopper lifting drive mechanism 85 for driving the hopper 84 to lift and lower. The hopper support is erected on one side of the storage silo 100. The hopper support includes a pair of main slide rails 81 and a pair of auxiliary slide rails 82. The auxiliary slide rails 82 correspond one-to-one with the main slide rails 81 and are fixed to the end face of the main slide rails 81 near the storage silo 100. The upper end of the auxiliary slide rails 82 is bent at a 90-degree angle towards the storage silo 100, and the bend is rounded. A sliding support 841 is provided at one end of the hopper 84 near the storage silo 100. A main pulley 843 and an auxiliary pulley 842 are respectively installed on the two side walls of the sliding support 841. The auxiliary pulley 842 is higher than the main pulley 843. The auxiliary pulley 842 slides along the auxiliary slide rail 82. The main pulley 843 slides along the main slide rail 81; the hopper lifting drive mechanism 85 includes a lifting drive motor and a pair of chain and sprocket assemblies; the pair of chain and sprocket assemblies are respectively mounted on the pair of main slide rails 81; the hopper support is fixedly connected to the pair of chains; the pair of sprockets of the pair of chain and sprocket assemblies are connected by a coaxial intermediate connecting rod; the lifting drive motor drives the intermediate connecting rod to rotate, thereby simultaneously driving the pair of chain and sprocket assemblies, and the pair of chains drive the hopper 84 to lift and lower; when it reaches the upper end of the hopper support, the auxiliary pulley 842 slides along the bend of the auxiliary slide rail 82, and the opening of the hopper 84 gradually tilts towards the storage bin 100. As the main pulley 843 further rises along the main slide rail 81, the hopper 84 gradually changes from tilting to flipping, causing the plastic material in the hopper 84 to pour into the storage bin 100. In order to control the weight of the plastic material in the hopper 84, a material weighing device 83 is provided at the bottom of the hopper support, which abuts against the material weighing device 83 when the hopper 84 is at its lowest point. The storage silo 100 that works in conjunction with the second storage feeding device 80 may not have a weighing device.

[0075] To prevent plastic material from accidentally falling out of the hopper 84, each second storage and feeding device 80 is equipped with an inlet end collection hopper 160. The plastic material passes through the inlet end collection hopper 160 before entering the hopper 84.

[0076] refer to Figure 3 and Figure 4The four-stage sorting device 60 includes a four-stage conveyor belt 61 and a four-stage air-blowing sorter 62. The four-stage conveyor belt 61 and the three-stage conveyor belt 51 have the same conveying direction. The four-stage air-blowing sorter 62 is located at the end of the four-stage conveyor belt 61. The plastic material conveyed by the three-stage conveyor belt 51 falls from top to bottom onto the four-stage conveyor belt 61. The four-stage air-blowing sorter 62 blows the sheet-like plastic material into the corresponding second storage feed device 80, and the remaining plastic material enters the third storage feed device 90. The structure of the third storage feed device 90 is similar to that of the first storage feed device 70, but the material distribution mechanism is omitted. The end of the main ventilation pipe 72 of the third storage feed device 90 is connected to the storage bin 100.

[0077] To separate the difficult-to-identify translucent bottles and waste, a manual sorting station is set up at point 61 of the fourth-level conveyor belt. At this station, workers sort out the waste and translucent bottles. The waste is thrown into the trash can, and the translucent material is thrown into the corresponding second storage feeding device 80. Finally, it will enter the corresponding storage bin 100 through the second storage feeding device 80.

[0078] refer to Figure 5 and Figure 6 The material storage and discharging equipment 110 includes a first conveying device 111, a second conveying device 112, and a third conveying device 113. The first and second conveying devices 111 and 112 are located directly below the discharge port of the storage silo 100. The conveying directions of the first and second conveying devices 111 and 112 are on the same straight line and in the same direction as the arrangement of the storage silos 100. The conveying direction of the third conveying device 113 is perpendicular to the arrangement of the storage silos. The third conveying device 113 is located between the first and second conveying devices 111 and 112, and its conveying starting point connects to the conveying ending points of both the first and second conveying devices 111 and 112, and its conveying ending point connects to the feeding starting point of the first packaging equipment. The third conveying device 113 passes through the bottom of the second sorting equipment. All three conveying devices (111, 112, and 113) are belt conveyors.

[0079] refer to Figure 6 The first packaging equipment includes a packaging elevator 130 and a packaging machine 140. The packaging elevator 130 is used to feed material to the packaging machine 140, and the conveying directions of the packaging elevator 130 and the second sorting equipment are parallel. The conveying direction of the packaging elevator 130 is perpendicular to the length direction of the packaging machine 140. Thus, the plastic material conveyed by the third conveying device 113 enters the packaging elevator 130. The packaging elevator 130 adopts a chain elevator, and the plastic material enters the packaging machine 140 for compression and packaging along with the packaging elevator 130.

[0080] refer to Figure 13The direct pressure feeding device 120 includes a direct pressure feeding trough 121 and a direct pressure conveying device 122. The direct pressure feeding trough 121 is used to stack materials, and its length direction is aligned with the feeding direction of the baling elevator 130. The direct pressure feeding trough 121 is rectangular funnel-shaped, with a drive port 1211 at its bottom. The direct pressure conveying device 122 uses a belt conveyor and is located at the drive port 1211. The conveying direction of the direct pressure conveying device 122 is the same as the length direction of the direct pressure feeding trough 121. The direct pressure conveying device 122 is used to convey the materials in the direct pressure feeding trough 121 along the length direction of the direct pressure feeding trough 121 to the feeding starting point of the baling elevator 130. In order to control the material in and out of the direct pressure feeding trough 121, a direct pressure discharge port 1210 is formed at the end of the direct pressure feeding trough 121 near the packaging elevator 130. A gate 124 for opening and closing the direct pressure discharge port 1210 is vertically raised and lowered on the direct pressure feeding trough 121. The gate 124 is driven by a gate cylinder 123 fixed on the direct pressure feeding trough 121.

[0081] To prevent excessive amounts of plastic material from flowing out of the direct pressure outlet 1210, the stroke of the gate cylinder 123 is adjustable, meaning the opening height of the direct pressure outlet 1210 is adjustable. (Reference) Figure 14 To achieve the above objectives, the gate 124 can be changed from vertical opening and closing to rotary opening and closing. In this case, the discharge volume of plastic material is independent of the size of the direct pressure discharge port 1210. The specific method is as follows: The gate 124 is set inside the direct pressure feeding trough 121 and close to the direct pressure discharge port 1210. The middle part of the gate 124 is rotatably connected to the direct pressure feeding trough 121 through a rotating shaft, and its axis is perpendicular to the length direction of the direct pressure feeding trough 121. A reduction motor is fixed on the direct pressure feeding trough 121, and the rotation angle of the output shaft of the reduction motor is adjustable. The rotating shaft of the gate 124 is coaxially fixedly connected to the output shaft of the reduction motor. Under normal conditions, the gate 124 is set vertically and its bottom is close to the direct pressure conveying device 122. At this time, the plastic material cannot flow out of the direct pressure discharge port 1210 through the gate 124. When material needs to be discharged, the geared motor starts, driving the gate 124 to rotate, causing the gate 124 to tilt. This allows the plastic material to flow out through the gap between the lower end of the gate 124 and the pressure conveying device 122. By changing the tilt angle of the gate 124, the gap between the lower end of the gate 124 and the pressure conveying device 122 can be changed. At this time, the tilted gate 124 can apply pressure to the plastic material, performing pre-compression and improving the efficiency of subsequent conveying. (Reference) Figure 15To further improve pre-compression efficiency, the gate 124 can be modified into a split type. The specific solution is as follows: The gate 124 includes a gate frame 1241, a main gate plate 1242, and a pressure applying component 1243. The gate frame 1241 is connected to the direct pressure feeding trough 121 through a rotating shaft. The lower end of the main gate plate 1242 is hinged inside the gate frame 1241. The pressure applying component 1243 is used to drive the main gate plate 1242 to rotate around the hinge axis to apply pressure to the plastic material. The pressure applying component 1243 includes a pressure driving electric cylinder 12431 hinged to the gate frame 1241 and a hinge seat 12432 fixed to the piston rod of the pressure driving electric cylinder 12431. The stroke of the pressure driving electric cylinder 12431 is adjustable. The hinge seat 12432 is hinged to the main gate plate 1242.

[0082] Example 2: The difference between Example 2 and Example 1 is that, in order to handle the packaging of large quantities of everyday household plastic materials (washbasins, toys, etc.), the direct pressure feeding device 120 can be configured with a second packaging device. The structure of the second packaging device is the same as that of the first packaging device. The conveying directions of the packaging elevator 130 and the second sorting device are parallel, and the conveying direction of the packaging elevator 130 is perpendicular to the length direction of the packaging machine 140. Additionally, both ends of the direct pressure feeding trough 121 can be set as discharge ends, and the opening and closing method of the discharge ends can adopt the vertical opening and closing method or the rotary opening and closing method as in Example 1. The first packaging device and the second packaging device are located on opposite sides of the length direction of the direct pressure feeding trough 121, and the direct pressure conveying device 122 can convey materials from both sides. This allows for the selection of whether to use the first packaging device or the direct pressure feeding device 120 in conjunction with the second packaging device, depending on the quantity of everyday household plastic materials (washbasins, toys, etc.).

[0083] All of the aforementioned optical sorters, air-blowing sorters, and packaging machines 140 are existing products.

[0084] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A material sorting system, characterized in that: include: One sorting machine completes one sorting operation; The second sorting equipment is connected to the end of the first sorting equipment and includes several sorting devices arranged in a straight line to complete multiple sorting operations. The storage equipment includes a number of storage bins (100) arranged in a straight line, all of which are located on the same side of the two-stage sorting equipment; The first packaging equipment is used to complete the extrusion packaging of materials. The first packaging equipment includes a packaging elevator (130) and a packaging machine (140). Material feeding equipment is used to transport materials between the secondary sorting equipment and the storage equipment; The material storage and discharging device (110) is used to realize the material conveying between the material storage device and the first packaging device; The conveying direction of the second sorting equipment, the arrangement direction of the storage bins of the storage equipment, and the feeding direction of the first packaging equipment are arranged in parallel to each other. The two-stage sorting equipment includes a two-stage elevator (30), a secondary sorting device (40), a tertiary sorting device (50), and a quaternary sorting device (60); the sorting positions of the secondary sorting device (40), the tertiary sorting device (50), and the quaternary sorting device (60) are lowered sequentially. It also includes a direct pressure feeding device (120); the direct pressure feeding device (120) includes a direct pressure feeding trough (121) and a direct pressure conveying device (122); the direct pressure feeding trough (121) is used to stack materials and its length direction is on the same straight line as the feeding direction of the first packaging equipment; the direct pressure conveying device (122) is used to convey the materials in the direct pressure feeding trough (121) along the length direction of the direct pressure feeding trough (121) to the feeding starting point of the first packaging equipment; The direct pressure feeding trough (121) is rectangular funnel-shaped, with a drive port (1211) at its bottom; the direct pressure conveying device (122) is located at the drive port (1211); a direct pressure discharge port (1210) is formed at one end of the direct pressure feeding trough (121) near the packing elevator (130); a gate (124) is located inside the direct pressure feeding trough (121) and near the direct pressure discharge port (1210); the gate (124) includes a gate frame (1241), a main gate plate (1242), and a pressure applying component (1243). The gate frame (1241) is connected to the direct pressure feeding trough (121) via a rotating shaft, and the lower end of the main gate plate (1242) is hinged to the gate. Inside the frame (1241), the pressure-applying component (1243) is used to drive the main gate plate (1242) to rotate around the hinge axis to apply pressure to the plastic material; the pressure-applying component (1243) includes a pressure-applying drive electric cylinder (12431) hinged to the gate frame (1241) and a hinge seat (12432) fixed on the piston rod of the pressure-applying drive electric cylinder (12431); the stroke of the pressure-applying drive electric cylinder (12431) is adjustable; the hinge seat (12432) is hinged to the main gate plate (1242); a reduction motor is fixed on the direct pressure feeding trough (121), and the rotation angle of the output shaft of the reduction motor is adjustable; the rotating shaft is coaxially and fixedly connected to the output shaft of the reduction motor.

2. The material sorting system according to claim 1, characterized in that: The four-stage sorting device (60) is equipped with a manual sorting station; the manual sorting station is used to sort out garbage and semi-transparent materials.

3. The material sorting system according to claim 1, characterized in that: The storage and discharge equipment (110) includes a first conveying device (111), a second conveying device (112), and a third conveying device (113); the first conveying device (111) and the second conveying device (112) are located directly below the discharge port of the storage silo (100); the conveying directions of the first conveying device (111) and the second conveying device (112) are on the same straight line and are in the same direction as the arrangement direction of the storage silo; the conveying direction of the third conveying device (113) is perpendicular to the arrangement direction of the storage silo; the third conveying device (113) is located between the first conveying device (111) and the second conveying device (112), and the starting point of the third conveying device (113) is connected to the ending points of both the first conveying device (111) and the second conveying device (112), and the ending point of the third conveying device (113) is connected to the feeding starting point of the first packaging equipment; the third conveying device (113) passes through the bottom of the two-stage sorting equipment.

4. A material sorting system according to claim 1, characterized in that: The first sorting device includes a sorting mechanism (20); the first sorting mechanism (20) includes a feeding conveyor belt (21) and a discharging conveyor belt that are perpendicular to each other; the material enters the second sorting device after passing through the feeding conveyor belt (21) and the discharging conveyor belt in sequence; the conveying direction of the first discharging conveyor belt is perpendicular to the conveying direction of the second sorting device.

5. A material sorting system according to claim 1, characterized in that: The packing elevator (130) is used to feed materials to the packing machine (140), and the conveying directions of the packing elevator (130) and the second sorting equipment are parallel; the conveying direction of the packing elevator (130) is perpendicular to the length direction of the packing machine (140).

6. A material sorting system according to claim 1, characterized in that: The material feeding equipment includes a first material feeding device (70); the first material feeding device (70) is provided with a material distribution mechanism at its conveying end; the material distribution mechanism includes a material distribution component (75) and a pair of material feeding pipes (76); the material distribution component (75) causes the pair of material feeding pipes (76) to discharge material alternately; the pair of material feeding pipes (76) are respectively connected to the two material storage bins (100).

7. A material sorting system according to claim 1, characterized in that: The material feeding equipment includes a second material feeding device (80); the second material feeding device (80) includes a hopper support, a hopper (84) that is lifted and lowered on the hopper support, and a hopper lifting drive mechanism (85) for driving the hopper (84) to lift and lower; the hopper lifting drive mechanism (85) cooperates with the hopper support to drive the hopper (84) to lift and lower, and at the end of the rising path, it drives the hopper (84) to flip and pour material into the storage bin (100).

8. A material sorting system according to claim 1, characterized in that: It also includes a second packaging device; the direct pressure conveying device (122) is used to convey the material in the direct pressure feeding trough (121) along the length of the direct pressure feeding trough (121) to the feeding starting point of the second packaging device.

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