Intelligent identification and efficient separation method for organic and inorganic materials in construction waste

Abstract

The invention provides an intelligent identification and efficient separation method for organic and inorganic materials in construction waste, and relates to the technical field of construction waste classification. The method comprises the following steps: firstly, screening the construction wastes into large interferents, materials in the screen and materials under the screen by using a primary screening machine; large interferents are crushed by the pickaxe machine and then are fed to the first-stage screening machine again; the materials in the screen are sorted by an intelligent sorting robot; the screen underflow is screened into a secondary oversize product, a secondary in-sieve product and a secondary screen underflow by a secondary screening machine; light substances are sorted out from the secondary oversize materials and the secondary in-sieve materials through a winnowing machine and conveyed to a combustible temporary storage area to be temporarily stored, and light substances in the sorted heavy substances are removed; and the purified heavy substances are crushed and then screened by an aggregate screening machine. By means of the method, intelligent fine efficient sorting of organic / inorganic materials can be achieved, the cleanliness and the recovery rate of recycled aggregate are improved, high-added-value utilization of construction waste end products is promoted, and optimization of environmental, social and economic benefits is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction waste classification, and in particular to a method for intelligently identifying and efficiently separating organic and inorganic materials in construction waste. Background Art

[0002] The rapid development of urbanization and the rapid growth of the economy and society have led to the generation and accumulation of a large amount of construction waste, and have also brought many problems. The garbage siege phenomenon caused by the inability to effectively recycle construction waste is a typical environmental problem.

[0003] Therefore, in order to solve the problem of construction waste classification, it is urgent to propose a method for intelligent identification and efficient separation of organic and inorganic materials in construction waste. Summary of the invention

[0004] The purpose of the present invention includes providing a method for intelligent identification and efficient separation of organic and inorganic materials in construction waste, which can realize intelligent, fine and efficient sorting of organic / inorganic materials, improve the cleanliness and recovery rate of recycled aggregates, promote the high added value utilization of terminal products of construction waste, and achieve optimization of environmental, social and economic benefits.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The present invention provides a method for intelligently identifying and efficiently separating organic and inorganic materials in construction waste, the method comprising the following steps:

[0007] S1: Use the primary screening machine to screen the construction waste into three types of particle sizes: large interference objects, screened objects and screened objects;

[0008] S2: transport the large interfering objects back to the raw material bin, crush them with the pickaxe and then re-feed them to the primary screening machine;

[0009] S3: The sieved materials are transported to the intelligent sorting robot and sorted into the corresponding cache compartments;

[0010] S4: The undersize material is transported to the secondary screening machine to screen the material into three particle sizes: secondary oversize material, secondary midsize material, and secondary undersize material;

[0011] S5: transport the secondary undersize to the slag storage area, and transport the secondary oversize and secondary midsize to the winnowing machine after removing some ferromagnetic metals from the secondary oversize by the iron remover;

[0012] S6: The light materials separated by the winnowing machine are transported to the combustible material buffer area for temporary storage; the heavy materials separated by the winnowing machine are transported to the manual sorting room to remove the light materials from the materials;

[0013] S7: The purified heavy materials are crushed and some metals are removed by iron remover, and then transported to aggregate screening machine for aggregate screening.

[0014] In an optional embodiment, in S1, the large interference object is a material with a particle size greater than 450 mm, the particle size range of the screened material is: 250 mm-450 mm, and the particle size of the screened material is less than 250 mm.

[0015] In an optional embodiment, in S1, the equipment used in the first-stage screening machine is a step screen, and the first-stage screening machine includes a base frame, a box, a motor, a flywheel and a screen assembly. The box can be movably mounted on the base frame, and the motor and the flywheel are respectively mounted on both sides of the box. The motor and the flywheel are connected by a shaft, and the screen assembly is installed in the box.

[0016] In an optional embodiment, in S1, the upper part of the screen assembly adopts a cantilevered rod structure, including long rods and short rods arranged in an alternating manner, and the lower part of the screen assembly is a grid-type screen, which is composed of a plurality of rectangular grids separated by several vertical and horizontal partitions.

[0017] In an optional embodiment, S3 includes:

[0018] The intelligent sorting robot's visual system is used to scan the garbage flow on the conveyor belt and identify the surface features of the garbage. Then, through deep learning, the material, outline and gripping points of the object are analyzed and identified. The sorting priority is determined based on the size, value and location of the object, and the intelligent sorting robot's manipulator is used to sort the materials.

[0019] In an optional embodiment, in S4, the particle size range of the secondary screen material is: 60mm-250mm, the particle size range of the secondary screen material is: 20mm-60mm, and the particle size of the secondary screen material is less than 20mm.

[0020] In an optional embodiment, in S4, the secondary screening machine is a composite tension and relaxation screen, and the secondary screening machine includes a feeding system, a screening system, a separation system, an anti-blocking device and a conveying system. The feeding system feeds the garbage into the screening system through a feed hopper and a conveyor belt. The screening system includes a vibrating screen and a vibration motor. The vibration motor drives the vibrating screen to vibrate and relax, and performs multi-layer screening of the garbage. The anti-blocking device is a cleaning ball or an automatic cleaning device, which is used to prevent the vibrating screen from being blocked. The separation system is used to separate the garbage output by the screening system by category, and send the classified garbage to subsequent processing links through the conveying system.

[0021] In an optional embodiment, in S7, the aggregate screening machine uses a heavy-duty circular vibration screen aggregate screening machine, which includes an aggregate screen box, an aggregate screen, a vibrator, a support spring and an aggregate base frame; the aggregate screen box is installed on the aggregate base frame through a support spring, and the aggregate screen is installed inside the aggregate screen box to separate materials of different particle sizes. The vibrator includes a motor, an eccentric block and a transmission device, and the eccentric block is driven to rotate by the motor through the transmission device. The vibrator is installed on the side of the aggregate screen box, and a vibration force is generated by the rotation of the eccentric block.

[0022] The beneficial effects of the method for intelligent identification and efficient separation of organic and inorganic materials in construction waste provided by the embodiment of the present invention include:

[0023] 1. Use the primary screening machine to screen the construction waste into three types of materials with different particle sizes: large interference materials, screened materials and screened materials. Use the secondary screening machine to screen the materials into three types of materials with different particle sizes: secondary screened materials, secondary screened materials and secondary screened materials. In this way, the primary screening machine and the secondary screening machine can at least subdivide the construction waste into materials with five different particle sizes, thus achieving fine sorting and facilitating accurate classification and recycling.

[0024] 2. The recycled aggregates of various particle sizes finally screened out are equivalent to those processed by the primary screener, secondary screener, iron remover, air separator, manual sorting, crusher, iron remover and aggregate screener in sequence, which can make the screened recycled aggregates have high purity and accurate particle size range;

[0025] 3. This method can realize the intelligent, precise and efficient sorting of organic / inorganic materials, improve the cleanliness and recovery rate of recycled aggregates, promote the high added value utilization of terminal products of construction waste, and achieve the optimization of environmental, social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A flow chart of a method for intelligently identifying and efficiently separating organic and inorganic materials from construction waste provided by an embodiment of the present invention;

[0028] Figure 2 A process schematic diagram of a method for intelligently identifying and efficiently separating organic and inorganic materials from construction waste provided by an embodiment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of a primary screening machine;

[0030] Figure 4 It is a structural schematic diagram of a secondary screening machine;

[0031] Figure 5 It is a structural diagram of the aggregate screening machine.

[0032] Icon: 1-base frame; 2-box; 3-motor; 4-flywheel; 5-screen assembly; 6-bracket; 7-vibration motor; 8-vibration screen; 9-spring; 10-aggregate screen box; 11-aggregate screen; 12-aggregate base frame; 13-support spring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0038] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0039] Please refer to Figure 1 and Figure 2This embodiment provides a method for intelligently identifying and efficiently separating organic and inorganic materials in construction waste (hereinafter referred to as the method), which includes the following steps:

[0040] S1: Use a primary screening machine to screen the construction waste into three types of particle sizes: large interference objects, screened objects, and screened objects.

[0041] Specifically, the construction waste is transported to the raw material warehouse by a transport vehicle for stacking, and the loader loads the construction waste onto the chain conveyor, and the construction waste is transported by the chain conveyor into the primary screening machine.

[0042] The first-stage screening machine uses a three-dimensional anti-blocking screening technology that is efficient and intelligent in sorting long strip materials. It can screen out large interference objects (materials with a particle size of >450mm) that affect the stable operation of the production line and fully break up the materials. The materials are screened into three types of particle sizes, namely large interference objects (i.e., materials on the screen, with a particle size of >450mm), materials in the screen (particle size range: 250mm-450mm) and materials under the screen (particle size <250mm).

[0043] Please refer to Figure 3 The equipment used in the primary screening machine is a step screen. Specifically, the primary screening machine includes a base frame 1, a box body 2, a motor 3, a flywheel 4 and a screen assembly 5. The box body 2 is movably mounted on the base frame 1, and the motor 3 and the flywheel 4 are respectively mounted on both sides of the box body 2 to save space. The motor 3 is connected to the flywheel 4 through a shaft, and the screen assembly 5 is installed in the box body 2. The motor 3 drives the flywheel 4 to rotate, and the flywheel 4 drives the box body 2 and the screen assembly 5 to vibrate, thereby realizing the screening of the material.

[0044] Specifically, the upper part of the screen assembly 5 adopts a cantilevered bar structure, including staggered long bars and short bars, and the lower part of the screen assembly 5 is a grid-type screen. When working, the screen assembly 5 vibrates continuously, and the screen surface of the screen assembly 5 forms an angle of 15° with the horizontal plane, that is, the screen surface of the screen assembly 5 is in a slope form, which is conducive to the material falling from the upper part of the screen assembly 5 to the lower part, and the grid-type screen is evenly placed in layers from the upper left to the lower right.

[0045] After the material reaches the feed port of the primary screening machine, it is constantly thrown up and down due to inertia, and moves downward under the action of gravity. When the material reaches the cantilevered bar structure, the long bar can disperse the agglomerated material. The normal angle between the long bar and the screen surface of the grid screen is 100°, and the normal angle between the short bar and the screen surface of the grid screen is 110°. When the agglomerated material collides with the uneven bars, the greater impact force can disperse the agglomerated material, and the dispersed material smoothly reaches the grid screen.

[0046] The grid screen is composed of several rectangular grids separated by several vertical and horizontal partitions. Materials with small particle sizes fall through the grid screen, and materials with large particle sizes move along the screen surface to the discharge port of the first-stage screening machine. The two specifications of materials will enter the next processing process respectively.

[0047] S2: The large interfering objects are transported back to the raw material warehouse, crushed by the pickaxe and then re-loaded to the primary screening machine.

[0048] Specifically, large interference objects (including large concrete blocks, large red bricks, large wood, large plastics, large cardboard, etc.) are directly transported back to the raw material warehouse, and then manually pre-sorted. The large interference objects are crushed by the pickaxe and then re-loaded.

[0049] S3: The sieved materials are transported to the intelligent sorting robot and sorted into the corresponding cache compartments.

[0050] Specifically, the screened materials are transported to the intelligent sorting robot by the conveyor. The intelligent sorting robot integrates and analyzes the surface physical properties, materials, three-dimensional shapes and other information of the construction waste, and uses deep learning technology to finely classify and accurately identify them. When the equipment detects that there is garbage passing on the conveyor belt, it uses the visual system to scan the garbage flow and identify the surface characteristics of the garbage. Then, through deep learning, it analyzes and identifies the material, contour and gripping point of the object, and determines the sorting priority according to the size, value and location of the object. The manipulator is used to conveniently and quickly sort materials, reduce the risk of manual accidents, and accurately select resources such as wood, plastic, gypsum board, etc., to achieve intelligent and fine sorting of construction waste. The intelligent sorting robot sorts out wood, cardboard and other combustibles and falls into the corresponding cache cargo box; the remaining heavy materials are large pieces of construction waste, which are transported by the conveyor to the back-end impact crusher for direct crushing.

[0051] S4: The undersize material is transported to the secondary screening machine to screen the material into three types of particle sizes: secondary oversize material, secondary midsize material, and secondary undersize material.

[0052] For details, please refer to Figure 4, the screened material is conveyed by a conveyor to a secondary screening machine, which is a composite tension and relaxation screen. The composite tension and relaxation screen is a device for processing wet and sticky construction and decoration waste, and its structure includes a feeding system, a screening system, a separation system, an anti-blocking device and a conveying system. The feeding system feeds the garbage into the screening system through a feeding hopper and a conveyor belt. The screening system includes a bracket 6 and a vibration motor 7 installed on the bracket 6 and a multi-layer vibration screen 8 arranged in sequence from top to bottom, wherein the size of the screen holes of the multi-layer vibration screen 8 decreases layer by layer from top to bottom, and the vibration motor 7 drives the vibration screen 8 to generate high-frequency vibration and tension and relaxation motion to perform multi-layer screening of the garbage. The spring 9 is supported at the bottom of the bracket to stabilize the elastic movement of the bracket 6 and the vibration screen 8. The anti-blocking device can be a cleaning ball or an automatic cleaning device to clean the vibration screen 8 and prevent the vibration screen 8 from being blocked. The separation system includes a plurality of receiving bins, which correspond one to one with the multi-layer vibrating screen 8, and are used to classify the garbage output by the screening system into different categories, and finally send the classified garbage to the subsequent processing link through the conveying system.

[0053] Among them, the secondary screening machine (compound tension and relaxation screen) screens the material into three particle size materials: secondary oversize (particle size range: 60mm-250mm), secondary midsize (particle size range: 20mm-60mm), and secondary undersize (particle size <20mm).

[0054] S5: The secondary undersize material is transported to the slag storage area, and the secondary oversize material and the secondary midsize material are respectively transported to the air separator after removing part of the ferromagnetic metal from the secondary oversize material through the iron remover.

[0055] Among them, the secondary undersize is a mixture of slag and soil with relatively small particles, which is directly transported by conveyor to a relatively closed slag storage area for resource utilization in the later stage. The secondary oversize and secondary midsize are respectively transported to the winnowing machine by conveyor after removing part of the ferromagnetic metal by the iron remover.

[0056] The air separator uses the difference in suspension speed and sedimentation speed of different materials in the flow medium (high-pressure air flow or liquid flow) to separate. Its working process includes the following main steps:

[0057] 1) Feeding:

[0058] The materials to be sorted enter the sorting area through the feeding system. The feeding system includes a hopper and a conveying device located below the hopper to ensure that the materials enter the sorting area evenly and continuously.

[0059] 2) Spray the flowing medium into the sorting area:

[0060] The flowing medium (gas or liquid) in the air separator is sprayed into the sorting area at high speed through the nozzle or orifice under the action of the high-pressure pump, forming a strong flow field. This flow field is the core of the sorting process and provides the power required for separation.

[0061] 3) Material separation

[0062] After the materials enter the flow field, they are affected by the fluid dynamics according to their different densities and show different suspension and sedimentation behaviors. The materials with lower density (such as light particles) are carried away by the air or liquid flow, suspended in the flow field or lifted, while the materials with higher density (such as heavy particles) settle quickly.

[0063] 4) Hierarchical collection

[0064] At the end of the sorting area, there are multiple collection devices designed to collect materials of different densities. Light materials are usually discharged from the upper outlet, while heavy materials are discharged from the lower outlet.

[0065] 5) Discharge and recycling

[0066] The sorted materials are discharged through their respective outlets for subsequent processing or direct resource recycling. Some equipment is also designed with a circulation system to return the incompletely separated materials to the sorting area to further improve the sorting efficiency.

[0067] S6: The light materials separated by the winnowing machine are transported to the combustible material buffer area for temporary storage; the heavy materials separated by the winnowing machine are transported to the manual sorting room to remove the light materials from the materials.

[0068] Specifically, the light materials separated by the wind separator are transported by conveyors to the combustible buffer area for temporary storage. The heavy materials (such as cement blocks, ceramics, and glass) separated by the wind separator are transported by conveyors to the manual sorting room to further remove the combustibles and other light materials from the materials.

[0069] S7: The purified heavy materials are crushed and some metals are removed by iron remover, and then transported to aggregate screening machine for aggregate screening.

[0070] The purified heavy materials are transported by conveyor to a special impact crusher for construction waste. The crushed materials are further removed from some metals by the iron remover module and then transported by conveyor to the aggregate screening machine for aggregate screening.

[0071] The aggregate screening machine screens the crushed materials into four types of recycled aggregates with particle sizes of 0-5mm, 5-10mm, 10-31.5mm and >31.5mm. The particle size range and number of types can be adjusted according to the actual project conditions.

[0072] Please refer to Figure 5 The aggregate screening machine uses a heavy-duty circular vibrating screen aggregate screening machine, which can be used in building materials, mining, coal and other industries. The aggregate screening machine includes an aggregate screen box 10, an aggregate screen 11, a vibrator, an aggregate base frame 12 and a support spring 13.

[0073] The aggregate base frame 12 is the basic structure of the equipment, which is made of steel structure and has good stability and strength. The aggregate screen box 10 is the main part of the equipment, which is composed of multiple screen plates and is installed on the aggregate base frame 12 through the support spring 13. The support spring 13 provides elastic movement for the aggregate screen box 10, absorbs vibration shock, and reduces the loss of the equipment. The aggregate screen box 10 is made of high-strength steel plate to withstand the impact and wear of heavy materials. The aggregate screen 11 is installed inside the aggregate screen box 10 to separate materials of different particle sizes. The aggregate screen 11 can be a metal mesh, a polyurethane mesh or a rubber mesh, which can be selected according to the screening requirements. The vibrator is the core component that generates vibration, including a motor, an eccentric block and a transmission device, and the eccentric block is driven to rotate by the motor through the transmission device. The vibrator is installed on the side of the aggregate screen box 10, and a strong vibration force is generated by the rotation of the eccentric block.

[0074] The working principle of the aggregate screening machine is based on the vibrating screening mechanism of the circular vibrating screen. The specific process is as follows:

[0075] 1) Material feeding:

[0076] The material to be screened is uniformly fed into the aggregate screen box 10 through a feeding device. The feeding device may be a belt conveyor, a bucket elevator, or the like.

[0077] 2) Vibration screening:

[0078] When the equipment is started, the motor drives the eccentric block to rotate through the transmission device, and the eccentric block generates a strong centrifugal force to drive the aggregate screen box 10 to vibrate in a circular trajectory. During the vibration of the aggregate screen box 10, the material on the aggregate screen 11 is subjected to the vibration force, and is thrown and rolled.

[0079] 3) Material separation:

[0080] The materials are separated according to the particle size during the movement on the surface of the aggregate screen 11. The fine particles fall through the screen holes and become the undersize products, while the larger particles continue to move on the screen until they are discharged from the outlet of the aggregate screen box 10.

[0081] 4) Grading and screening:

[0082] Aggregate screening machine is equipped with multiple layers of screens, which can achieve multi-level screening. Each layer of screen has different apertures. After the materials are screened layer by layer, they are separated into different levels according to the particle size.

[0083] 5) Discharging:

[0084] The screened materials are discharged from their respective outlets. The oversize and undersize materials are transported to the next processing link or shipped directly through the conveying device.

[0085] The particle size of 0-5mm and 5-10mm recycled aggregate is relatively small, and is directly transported by conveyor to the aggregate bin of corresponding particle size for temporary storage. The recycled aggregate of 10-31.5mm is transported by conveyor to the aggregate bin of corresponding particle size for temporary storage after further impurities are removed and purified by manual sorting. The recycled aggregate >31.5mm is transported by conveyor and returned to the impact crusher after further impurities are removed and purified by manual sorting room. The recycled aggregate is cyclically crushed to control the particle size, and at the same time, the quality of the recycled aggregate at the end is guaranteed, with the impurity content <2%.

[0086] The finished materials in each buffer area are transported to the finished material storage area by loaders, and the materials in the finished material storage area are cleared away regularly according to capacity requirements.

[0087] Ultimately, the entire process of intelligent identification and efficient separation of organic / inorganic materials in construction waste will be completed, and construction waste can be finally sorted into five major categories of products: recycled aggregates, metals, mixed slag, mixed combustibles, wood, paper and other resources.

[0088] Example

[0089] A demonstration project for intelligent identification and efficient treatment of construction waste was established in a certain city using the method for intelligent identification and efficient separation of organic and inorganic materials in construction waste provided in this embodiment. The treatment object is mixed waste consisting of construction and decoration waste, etc. The entire production line needs to operate continuously throughout the day, with a daily processing capacity of not less than 1,000 tons, an hourly processing capacity of not less than 62.5 tons, and an annual processing volume of not less than 300,000 tons.

[0090] The beneficial effects of the method for intelligent identification and efficient separation of organic and inorganic materials in construction waste provided by the embodiment of the present invention include:

[0091] 1. Use the primary screening machine to screen the construction waste into three types of materials with different particle sizes: large interference materials, screened materials and screened materials. Use the secondary screening machine to screen the materials into three types of materials with different particle sizes: secondary screened materials, secondary screened materials and secondary screened materials. In this way, the primary screening machine and the secondary screening machine can at least subdivide the construction waste into materials with five different particle sizes, thus achieving fine sorting and facilitating accurate classification and recycling.

[0092] 2. The recycled aggregates of various particle sizes finally screened out are equivalent to those processed by the primary screener, secondary screener, iron remover, air separator, manual sorting, crusher, iron remover and aggregate screener in sequence, which can make the screened recycled aggregates have high purity and accurate particle size range;

[0093] 3. This method can realize the intelligent, precise and efficient sorting of organic / inorganic materials, improve the cleanliness and recovery rate of recycled aggregates, promote the high added value utilization of terminal products of construction waste, and achieve the optimization of environmental, social and economic benefits.

[0094] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for intelligent identification and efficient separation of organic and inorganic materials in construction waste, characterized in that: The method comprises the following steps: S1: Use the primary screening machine to screen the construction waste into three types of particle sizes: large interference objects, screened objects and screened objects; S2: transporting the large interfering objects back to the raw material bin, crushing them with a pickaxe and then feeding them back to the primary screening machine; S3: transporting the sieved objects to the intelligent sorting robot and sorting them into corresponding cache compartments; S4: conveying the undersize material to a secondary screening machine to screen the material into materials with three particle sizes: secondary oversize material, secondary midsize material, and secondary undersize material; S5: transporting the secondary undersize to a slag storage area, and removing part of the ferromagnetic metal from the secondary oversize and the secondary midsize respectively through an iron remover, and then transporting them to a winnowing machine; S6: transporting the light materials separated by the winnowing machine to the combustible material buffer area for temporary storage; transporting the separated heavy materials to the manual sorting room to remove the light materials from the materials; S7: The purified heavy materials are crushed and some metals are removed by iron remover, and then transported to aggregate screening machine for aggregate screening.

2. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 1 is characterized in that In S1, the large interference object is a material with a particle size greater than 450mm, the particle size range of the material in the sieve is: 250mm-450mm, and the particle size of the material under the sieve is less than 250mm.

3. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 2 is characterized in that In S1, the equipment used in the first-stage screening machine is a stepped screen, and the first-stage screening machine comprises a base frame (1), a box (2), a motor (3), a flywheel (4) and a screen assembly (5), wherein the box (2) is movably mounted on the base frame (1), the motor (3) and the flywheel (4) are respectively mounted on two sides of the box (2), the motor (3) and the flywheel (4) are connected via a shaft, and the screen assembly (5) is mounted in the box (2).

4. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 3 is characterized in that In S1, the upper part of the screen assembly (5) adopts a cantilevered rod structure, including long rods and short rods arranged in a staggered manner, and the lower part of the screen assembly (5) is a grid-type screen, and the grid-type screen is composed of a plurality of rectangular grids separated by several longitudinal and transverse partitions.

5. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 1 is characterized in that ,S3 includes: The intelligent sorting robot's visual system is used to scan the garbage flow on the conveyor belt and identify the surface features of the garbage. Then, through deep learning, the material, outline and gripping points of the object are analyzed and identified, and the sorting priority is determined according to the size, value and location of the object. The intelligent sorting robot's manipulator is used to sort the materials.

6. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 1 is characterized in that In S4, the particle size range of the secondary sieve material is: 60mm-250mm, the particle size range of the secondary sieve material is: 20mm-60mm, and the particle size of the secondary sieve material is less than 20mm.

7. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 1 is characterized in that In S4, the secondary screening machine is a composite tension and relaxation screen, and the secondary screening machine includes a feeding system, a screening system, a separation system, an anti-blocking device and a conveying system. The feeding system feeds the garbage into the screening system through a feeding hopper and a conveyor belt. The screening system includes a vibrating screen (8) and a vibration motor (7). The vibration motor (7) drives the vibrating screen (8) to vibrate and relax to perform multi-layer screening of the garbage. The anti-blocking device is a cleaning ball or an automatic cleaning device, which is used to prevent the vibrating screen (8) from being blocked. The separation system is used to separate the garbage output by the screening system by category, and send the classified garbage to subsequent processing links through the conveying system.

8. The method for intelligent identification and efficient separation of organic and inorganic materials from construction waste according to claim 1 is characterized in that In S7, the aggregate screening machine is a heavy-duty circular vibrating screen aggregate screening machine, the aggregate screening machine comprising an aggregate screening box (10), an aggregate screen (11), a vibrator, a support spring (13) and an aggregate base frame (12); the aggregate screening box (10) is mounted on the aggregate base frame (12) via the support spring (13), the aggregate screen (11) is mounted inside the aggregate screening box (10) and is used to separate materials of different particle sizes, the vibrator comprises a motor, an eccentric block and a transmission device, the motor drives the eccentric block to rotate via the transmission device, the vibrator is mounted on the side of the aggregate screening box (10), and generates vibration force through the rotation of the eccentric block.

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