Construction waste recycling device and treatment method

Abstract

The invention discloses a construction waste recycling device and a treatment method.The recycling device comprises a main waste recycling processing line and an auxiliary waste recycling processing line which are combined, the main waste recycling processing line is used for processing and recycling construction waste, and the main waste recycling processing line comprises a belt conveyor A, a belt conveyor B and a recycling line; wherein the belt conveyor A and the belt conveyor B are distributed in an L shape, the close ends of the belt conveyor A and the belt conveyor B are connected, a recovery line is arranged on the output side of the belt conveyor B, and the recovery line is combined recovery equipment used for crushing, deironing and screening building waste; the auxiliary waste recycling processing line is used for cleaning and recycling building waste and sandy soil and disintegrating slag adhering to the building waste. The auxiliary waste recycling processing line comprises a cleaning box, a slope plate, a high-pressure flushing assembly, a transition box and a water removal screening device. Through the combination of the main waste recovery processing line and the auxiliary waste recovery processing line, the building waste can be subjected to multi-level fine treatment.

Description

Technical Field

[0001] The present invention relates to the field of construction waste recycling, and specifically to a device and a treatment method for recycling construction waste. Background Art

[0002] In the modern urbanization process, with the progress of various construction, demolition and municipal engineering projects, a large amount of construction waste is generated during the construction process. These wastes are of various types, including concrete, bricks, stones, wood, plastics and metal materials such as deformed steel bars. Although metal wastes such as deformed steel bars are usually collected and sent to metal recycling stations for reuse, construction wastes such as concrete, bricks, stones, wood and plastics are often abandoned at the construction site, waiting for subsequent treatment and disposal.

[0003] Currently, the traditional recycling and treatment methods for these construction wastes mainly focus on crushing concrete wastes through large crushers, converting them into smaller particles, and using them as road base materials or recycled aggregates after screening.

[0004] The existing technical solutions include the following:

[0005] 1) Publication No. CN118752654B discloses a construction waste crushing and recycling treatment device. In this patent application, it includes a water separation mechanism and a crushing mechanism; the water separation mechanism is used to remove plastics from the waste. The water separation mechanism includes: a water tank filled with liquid, and a filter plate movably arranged in the water tank; a linear motion component installed in the water tank, the moving end of the linear motion component is connected to the filter plate, and the height of the filter plate in the water tank is controlled by the linear motion component; a fishing component used to fish the plastics floating on the liquid surface. Through the coordinated work of the filter plate and the fishing component in the water separation mechanism, the plastic components in the construction waste can be effectively separated, improving the plastic recovery rate; removing the plastic components before crushing reduces the failures caused by plastic entanglement of the crusher and extends the service life of the crusher.

[0006] 2) Publication No. CN116328881B discloses a construction waste recycling device and process. In this patent application, it includes a box body, and a crushing mechanism for crushing construction waste is arranged in the box body. A feeding hopper is arranged on the box body, and arc-shaped transition plates are arranged on two opposite sides of the feeding hopper. The two arc-shaped transition plates extend towards the sides away from each other on the side away from the feeding hopper. Pressing plates are slidably arranged on the sides of the two arc-shaped transition plates close to each other. The pressing plates are used to extrude the construction waste in the feeding hopper. The pressing plates slide along the arc surfaces of the arc-shaped transition plates. When the pressing plates slide into the feeding hopper, two driving components are arranged on the box body to respectively drive the pressing plates to slide. This application has the effect of facilitating the crushing of relatively smooth construction wastes such as cylindrical ones.

[0007] 3) Publication number CN115367335A discloses a building waste recycling equipment and process for green construction of houses. In this patent application, it includes a base, on the upper end face of which is fixedly connected an installation box. At the upper part of the installation box is fixedly connected a crushing mechanism. Inside the installation box and below the crushing mechanism, a reflux mechanism is installed through a fixed rod. On the upper end face of the base and inside the rotating cylinder, a roller is fixedly connected through a vertical column. On the circumferential surface of the roller and the circumferential inner wall of the rotating cylinder and equidistantly along its axis direction, a number of crushing teeth are fixedly connected. The present invention can perform multiple re-crushing treatments on building waste, so as to thoroughly crush the waste, which is convenient for the recycling and screening of the waste. Moreover, it can crush the waste layer by layer from small to large, avoiding the situation that the equipment is stuck due to the too large volume of waste fragments, and greatly improving the crushing effect on the waste.

[0008] However, most of the above-mentioned recycling devices / methods are for the crushing, screening and recycling of large-size building waste such as concrete. Since there will be a lot of sand, slag and other waste adhering to the building waste, sand and slag usually contain reusable building materials. Failure to recycle them will not only increase the environmental burden, but also waste high-quality resources that could have been reused. In addition, if sand, slag and the like are not treated, they will also affect the quality of the recycled materials during the recycling process. Summary of the Invention

[0009] The purpose of the present invention is to provide a building waste recycling device. Through the effective combination of the main waste recycling processing line and the secondary waste recycling processing line, it can perform multi-level fine processing on building waste, greatly improving the recycling efficiency of building waste.

[0010] To achieve the above object, the present invention provides the following technical solutions: a device and a processing method for recycling construction waste, including a combined main waste recycling and processing line and a secondary waste recycling and processing line. The main waste recycling is used for processing and recycling construction waste. The main waste recycling and processing line includes a belt conveyor A, a belt conveyor B, and a recycling line. Among them, the belt conveyor A and the belt conveyor B are distributed in an L shape, and the adjacent ends of the belt conveyor A and the belt conveyor B are connected. A recycling line is arranged on the output side of the belt conveyor B. The recycling line is a combined recycling device for crushing, iron removal, and screening of construction waste; the secondary waste recycling and processing line is used for cleaning and recycling construction waste and the sand and crushed slag adhering to the construction waste. The secondary waste recycling and processing line includes a cleaning tank, a slope plate, a high-pressure flushing component, a transition tank, and a water removal and screening device. The secondary waste recycling and processing line flushes the construction waste transported on the belt conveyor through the high-pressure flushing component, effectively removing the attached waste, such as sediment, gravel, and slag. Through high-pressure flushing, the surface of the waste can be thoroughly cleaned, impurities can be removed, and the purity and quality of the recycled materials can be ensured. This efficient cleaning process not only improves the quality of the recycled materials, making them more suitable for reuse, but also greatly reduces the non-recyclable impurities in the waste, ensuring a more efficient and environmentally friendly recycling process.

[0011] Preferably, through holes for installing and penetrating the belt conveyor A and the belt conveyor B are provided on the cleaning tank. Maintenance ladders are arranged on the front and rear sides of the cleaning tank. The rear end of the cleaning tank is connected to the transition tank, and a slope plate inclined towards the transition tank is arranged in the cleaning tank.

[0012] Preferably, a high-pressure flushing component is provided on the cleaning tank. The high-pressure flushing component is used for flushing the construction waste carried on the belt conveyor A. The high-pressure flushing component includes a cross bar, an intermediate bracket, a motor A, a turntable, a rotating rod, a first swing arm, a V-shaped connecting rod, a second swing arm, a flushing frame A, and a flushing frame B. The two sides of the intermediate bracket are fixed on the top side of the cleaning tank through the cross bar. A long through hole is provided on the intermediate bracket. The flushing frame A and the flushing frame B are respectively hinged on both sides of the intermediate bracket; the motor A is fixed on the intermediate bracket, and the shaft end of the motor A is connected to the turntable, and the eccentric side of the turntable end face is hinged to the rotating rod.

[0013] Preferably, both the first swing arm and the V-shaped connecting rod are hinged to the free end of the rotating rod. The middle of the V-shaped connecting rod is movably connected to the intermediate bracket, and the upper end of the V-shaped connecting rod extends into the long through hole of the intermediate bracket and is hinged to the second swing arm. The upper ends of the first swing arm and the second swing arm extend out of the long through hole. The end of the first swing arm is hinged to the flushing frame A, and the end of the second swing rod is hinged to the flushing frame B. A plurality of nozzles are provided on the flushing frame A and the flushing frame B. The input sides of the flushing frame A and the flushing frame B are connected with a first water inlet pipe and a second water inlet pipe, and the second water inlet pipe is a waste water recovery pipe;

[0014] Preferably, the transition box is connected to the inner side of the cleaning box through a through port, and the transition box is used for temporary storage and treatment of sand, debris and water. Two openings are provided on one side of the transition box close to the water removal screener.

[0015] Preferably, the dewatering screen includes a bin body, a lifting belt, a dewatering component, a feeding auger and a screening component, wherein the inner cavity of the bin body is divided into a water collecting bin and a material collecting bin by a partition, two sets of lifting belts are installed on the upper side of the water collecting bin, and the two sets of lifting belts are connected to the bottom side of the open transition box; the dewatering component is installed on the bottom side of the water collecting bin and connected to the output side of the lifting belt, the dewatering component includes a guide plate and a dewatering screen frame, the dewatering screen frame is a frame shell structure with a closed bottom and water leakage holes arranged around the outside, and guide plates connected to the output side of the lifting belt are arranged on both sides of the top of the dewatering screen frame.

[0016] Preferably, the screening component is installed inside the collecting bin, and the screening component includes a receiving hopper, a receiving screw, a gear drive device and a roller screen. The top of the receiving hopper is open, a receiving screw is arranged inside the receiving hopper, and a roller screen is arranged at the lower side of the receiving hopper; the roller screen is connected to the receiving hopper, and the roller screen includes a screen frame and a drum, and the drum and the receiving screw are driven by the gear drive device, and a discharge port is arranged at the lower side of the screen frame. The main function of the dewatering screen is to remove moisture from the construction waste flushed from the secondary waste recycling processing line. After the waste is washed with high pressure, a large amount of moisture will adhere to the surface, especially fine substances such as sand, debris, etc. If these substances are not dewatered in time, they may affect subsequent processing and reuse. The dewatering screen effectively removes moisture from the waste through components such as the lifting belt, the dewatering component and the screening component, thereby ensuring the dryness of the waste and facilitating subsequent processing. The function of the dewatering screener is not only to remove moisture from the waste, but more importantly, to effectively recover the recyclable components in the construction waste through screening and separation, thereby improving the waste recycling efficiency.

[0017] Preferably, through the cooperation of the transition box and the water removal screen, the secondary waste material recovery and processing line can further process the waste material after high-pressure washing. The waste material often contains a large amount of finished sand, which is usually of high quality. If it is not effectively recovered, the sand will be wasted, resulting in resource loss. Through the process steps of draining, feeding, screening, etc., the present invention can effectively extract high-quality sand from the waste material to ensure its recycling and reuse.

[0018] Preferably, one end of the feeding auger extends into the inner side of the dewatering screen frame, and the other end of the feeding auger extends out of the inner side of the receiving hopper. The feeding auger mainly transports the fine waste drained by the dewatering screen frame to the receiving hopper, and the roller screen at the lower side of the receiving hopper screens the fine waste.

[0019] Preferably, the present invention further provides a construction waste recycling treatment method, which is implemented based on the above recycling device, and the specific treatment steps include:

[0020] S1: Waste collection and transportation:

[0021] S1.1: Construction waste is transported from the construction site to the main waste recycling and processing line by belt conveyor A;

[0022] S1.2: Belt conveyor A conveys the waste to the cleaning tank of the secondary waste recycling and processing line. In the cleaning tank, the waste is subjected to high-pressure flushing to remove attached sand, sediment, and gravel impurities;

[0023] S1.3: The washed waste is transferred out by belt conveyor B and processed by the recycling line. The recycling line includes crushing, iron removal, and screening equipment for subsequent resource treatment of the waste, enabling the waste to be used as auxiliary materials / aggregates in construction and road projects;

[0024] S2: Waste enters the secondary waste recycling and processing line:

[0025] S2.1: During the flushing process of S1.2, the fine waste attached to the surface of the waste and water flow into the bottom of the cleaning tank together. The slope plate installed in the cleaning tank guides these washed fine waste to the transition tank;

[0026] S2.2: The transition tank temporarily stores the washed waste and water;

[0027] S2.3: The waste is sent to the water collection bin by the lifting belt to further remove the moisture in the waste;

[0028] S2.4: Under the action of the water removal sieve frame in the water collection bin, the moisture in the waste is removed, keeping the waste dry;

[0029] S2.5: The dry waste is exported to the screening component by the feeding auger. The screening component separates recyclable components such as smaller sand and slag. That is, through the rotary screen and the receiving screw, the fine sand in the waste is screened out to ensure the purity of the recycled materials;

[0030] S2.6: After the screening process is completed, the high-quality sand can be further used in construction and road projects.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. Through the effective combination of the main waste recycling and processing line and the secondary waste recycling and processing line, the present invention can perform multi-level fine treatment on construction waste. Especially through the high-pressure flushing component of the secondary waste recycling and processing line, impurities such as sand and slag adhered to the surface of the waste are effectively removed, avoiding interference of these attachments on the recycling process and greatly improving the recycling efficiency of construction waste.

[0033] 2. The present invention specifically recycles and processes the sand and crushed slag in construction waste through a secondary waste recycling and processing line. Since these sand and crushed slag are usually finished products and high-quality building materials, they can be recycled after effective cleaning and screening, maximizing the avoidance of resource waste. This not only helps reduce environmental pollution but also provides high-quality reusable sand and other materials for the construction industry.

[0034] 3. Through the effective cooperation of the main waste recycling and processing line and the secondary waste recycling and processing line, the present invention can accurately separate and recycle various components in the waste, improving the overall utilization rate of resources. Whether it is sand, crushed slag or other recyclable materials, they have all been fully recycled, promoting the process of resource utilization of construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 is a schematic diagram of the partial structure of the main waste recycling and processing line and the secondary waste recycling and processing line in the embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of the structure of the high-pressure flushing assembly in the embodiment of the present invention;

[0038] Figure 4 is a schematic diagram of the structure of the water removal and screening device in the embodiment of the present invention;

[0039] Figure 5 is a schematic diagram of the structure of the screening member in the embodiment of the present invention.

[0040] In the figure:

[0041] 1. Belt conveyor A; 2. Belt conveyor B; 3. Cleaning tank; 4. Slope plate; 5. High-pressure flushing assembly; 501. Cross bar; 502. Intermediate support; 503. Motor A; 504. Turntable; 505. Rotating rod; 506. First swing arm; 507. V-shaped connecting rod; 508. Second swing arm; 509. Flushing rack A; 510. Flushing rack B; 511. Second water inlet pipe; 6. Transition tank; 7. Water removal and screening device; 701. Water collection bin; 702. Aggregate bin; 703. Lifting belt; 704. Guide plate; 705. Water removal screen frame; 706. Receiving hopper; 707. Receiving screw; 708. Gear drive device; 709. Rotary screen; 710. Feeding auger. DETAILED DESCRIPTION OF THE INVENTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0044] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] Please refer to Figure 1 , the present invention provides a technical solution: a building waste recycling device, including a combined main waste recycling and processing line and a secondary waste recycling and processing line.

[0046] Please refer to Figure 1 , Figure 2 , in this embodiment, the main waste recycling is used to process and recycle building waste. The main waste recycling and processing line includes a belt conveyor A1, a belt conveyor B2, and a recycling line (not shown in the figure). Among them, the belt conveyor A1 and the belt conveyor B2 are distributed in an L shape, the adjacent ends of the belt conveyor A1 and the belt conveyor B2 are connected, and a recycling line is arranged on the output side of the belt conveyor B2. The recycling line is a combined recycling device for crushing, iron removal, and screening of building waste. Since the recycling line is a relatively common device in the prior art, the principle and recycling process thereof will not be described in detail in this embodiment.

[0047] In this embodiment, the secondary waste recycling and processing line is used to clean and recycle construction waste and the sand and crushed slag adhering to the construction waste. The secondary waste recycling and processing line includes a cleaning tank 3, a slope plate 4, a high-pressure flushing assembly 5, a transition tank 6, and a water removal and screening device 7. The secondary waste recycling and processing line uses the high-pressure flushing assembly 5 to clean the construction waste transported on the belt conveyor, effectively removing the attached waste, such as sediment, gravel, and slag. Through high-pressure flushing, the surface of the waste can be thoroughly cleaned, impurities can be removed, and the purity and quality of the recycled materials can be ensured. This efficient cleaning process not only improves the quality of the recycled materials, making them more suitable for reuse, but also greatly reduces the non-reusable impurities in the waste, ensuring a more efficient and environmentally friendly recycling process.

[0048] Please refer to Figure 2 、 Figure 3 , in this embodiment, the cleaning tank 3 is provided with through holes for the installation and penetration of the belt conveyor A1 and the belt conveyor B2. Maintenance ladders are provided on the front and rear sides of the cleaning tank 3. The rear end of the cleaning tank 3 is connected to the transition tank 6. A slope plate 4 inclined towards the transition tank 6 is provided inside the cleaning tank 3. The cleaning tank 3 is provided with a high-pressure flushing assembly 5. The high-pressure flushing assembly 5 is used to flush the construction waste carried on the belt conveyor A1. The high-pressure flushing assembly 5 includes a cross bar 501, an intermediate bracket 502, a motor A503, a turntable 504, a rotating rod 505, a first swing arm 506, a V-shaped connecting rod 507, a second swing arm 508, a flushing frame A509, and a flushing frame B510. Both sides of the intermediate bracket 502 are fixed to the top side of the cleaning tank 3 through the cross bar 501. The intermediate bracket 502 is provided with a long through hole. The flushing frame A509 and the flushing frame B510 are respectively hinged on both sides of the intermediate bracket 502. The motor A503 is fixed on the intermediate bracket 502, and the shaft end of the motor A503 is connected to the turntable 504. The eccentric side of the end face of the turntable 504 is hinged to the rotating rod 505. Both the first swing arm 506 and the V-shaped connecting rod 507 are hinged to the free end of the rotating rod 505. The middle of the V-shaped connecting rod 507 is movably connected to the intermediate bracket 502. The upper end of the V-shaped connecting rod 507 extends into the long through hole of the intermediate bracket 502 and is hinged to the second swing arm 508. The upper ends of the first swing arm 506 and the second swing arm 508 extend out of the long through hole. The end of the first swing arm 506 is hinged to the flushing frame A509, and the end of the second swing rod is hinged to the flushing frame B510. A number of spray nozzles are provided on the flushing frame A509 and the flushing frame B510. The input sides of the flushing frame A509 and the flushing frame B510 are connected to a first water inlet pipe (not shown in the figure) and a second water inlet pipe 511. The second water inlet pipe 511 is a waste water recovery pipe.

[0049] In this embodiment, the transition tank 6 is communicated with the inner side of the cleaning tank 3 through a through port. The transition tank 6 is used for temporarily storing and treating sand, crushed slag, and water. Two openings are provided on one side of the transition tank 6 close to the water removal and screening device 7.

[0050] Please refer to Figure 1 、Figure 4 , Figure 5 In the present embodiment, the dewatering screen 7 comprises a bin body, a lifting belt 703, a dewatering component, a feeding auger 710 and a screening component, wherein the inner cavity of the bin body is divided into a water collecting bin 701 and a material collecting bin 702 by a partition, two sets of lifting belts 703 are installed on the upper side of the water collecting bin 701, and the two sets of lifting belts 703 are connected by the bottom side of the open transition box 6; the dewatering component is installed on the bottom side of the water collecting bin 701 and is connected to the output side of the lifting belt 703, the dewatering component comprises a guide plate 704 and a dewatering screen frame 705, the dewatering screen frame 705 is a frame shell structure with a closed bottom and water leakage holes arranged around the outer side, and guide plates 704 connected to the output side of the lifting belt 703 are arranged on both sides of the top of the dewatering screen frame 705. The screening component is installed inside the collecting bin 702, and the screening component includes a receiving hopper 706, a receiving screw 707, a gear drive device 708 and a rolling screen 709. The top of the receiving hopper 706 is open, and a receiving screw 707 is arranged inside the receiving hopper 706. A rolling screen 709 is arranged at the lower side of the receiving hopper 706; the rolling screen 709 is connected with the receiving hopper 706, and the rolling screen 709 includes a screen frame and a drum. The drum and the receiving screw 707 are driven by the gear drive device 708, and a discharge port is arranged at the lower side of the screen frame. The main function of the dewatering screen 7 is to remove moisture from the construction waste washed down from the secondary waste recycling processing line. After the waste is washed under high pressure, a large amount of moisture will adhere to the surface, especially fine substances such as sand, debris, etc. If these substances are not dehydrated in time, they may affect subsequent processing and reuse. The dewatering screen 7 effectively removes the water in the waste through the lifting belt 703, the dewatering component and the screening component, thereby ensuring the dryness of the waste and facilitating subsequent processing. The dewatering screen 7 not only removes the water in the waste, but more importantly, through screening and separation, the recyclable components in the construction waste can be effectively recovered, thereby improving the waste recovery efficiency.

[0051] In this embodiment, through the cooperation of the transition box 6 and the water removal screen 7, the secondary waste recovery processing line can further process the waste after high-pressure washing. The waste often contains a large amount of finished sand, which is usually of high quality. If it is not effectively recovered, the sand will be wasted, resulting in resource loss. Through the process steps of draining, feeding, screening, etc., the present invention can effectively extract high-quality sand from the waste to ensure its recycling and reuse.

[0052] In this embodiment, one end of the feeding auger 710 extends into the inner side of the dewatering screen frame 705, and the other end of the feeding auger 710 extends out of the inner side of the receiving hopper 706. The feeding auger 710 mainly transports the fine waste drained by the dewatering screen frame 705 to the receiving hopper 706, and the roller screen 709 at the lower side of the receiving hopper 706 screens it.

[0053] This embodiment also provides a method for recycling construction waste. This treatment method is implemented based on the above recycling device, and the specific treatment steps include:

[0054] S1: Waste collection and transportation:

[0055] S1.1: Construction waste is transported from the construction site to the main waste recycling and processing line through belt conveyor A1;

[0056] S1.2: Belt conveyor A1 conveys the waste to the cleaning tank 3 of the secondary waste recycling and processing line. In the cleaning tank 3, the waste is subjected to high-pressure flushing to remove the attached sand, sediment, and gravel impurities;

[0057] S1.3: The washed waste is transferred out through belt conveyor B2 and processed by the recycling line. The recycling line includes crushing, iron removal, and screening equipment for subsequent resource treatment of the waste, enabling the waste to be used as auxiliary materials / aggregates in construction and road engineering projects;

[0058] S2: Waste enters the secondary waste recycling and processing line:

[0059] S2.1: During the flushing process of S1.2, the fine waste attached to the surface of the waste and water flow into the bottom of the cleaning tank 3 together. The slope plate 4 provided in the cleaning tank 3 guides these flushed fine waste to the transition tank 6;

[0060] S2.2: The transition tank 6 temporarily stores the flushed waste and water;

[0061] S2.3: The waste is sent to the water collection bin 701 through the lifting belt 703 to further remove the moisture in the waste;

[0062] S2.4: Under the action of the water removal sieve frame 705 in the water collection bin 701, the moisture in the waste is removed, keeping the waste dry;

[0063] S2.5: The dry waste is exported to the screening component by the feeding auger 710. The screening component separates recyclable components such as smaller sand and slag. That is, through the rotary screen 709 and the receiving screw 707, the fine sand in the waste is screened out to ensure the purity of the recycled materials;

[0064] S2.6: After the screening process is completed, the high-quality sand can be further used in construction and road engineering projects.

[0065] It should be noted that: The entire device is controlled by the total control system. Since the devices matched by the control system are common devices and belong to the existing mature technology, the electrical connection relationship and the specific circuit structure are not described herein again.

[0066] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction waste recycling device, comprising a main waste recycling line and a secondary waste recycling line, characterized in that: The main waste recycling is used to process and recycle construction waste. The main waste recycling processing line includes a belt conveyor A (1), a belt conveyor B (2) and a recycling line. The belt conveyor A (1) and the belt conveyor B (2) are arranged in an L shape. The ends of the belt conveyor A (1) and the belt conveyor B (2) are connected. The output side of the belt conveyor B (2) is provided with a recycling line. The recycling line is a combined recycling equipment for crushing, removing iron and screening construction waste. The auxiliary waste recycling processing line is used for crushing construction waste and iron adhering to construction waste. The sand and debris are cleaned and recycled. The secondary waste recycling processing line comprises a cleaning box (3), a gradient plate (4), a high-pressure flushing assembly (5), a transition box (6), and a water removal screen (7). The cleaning box (3) is provided with through holes for the installation and penetration of a belt conveyor A (1) and a belt conveyor B (2). Inspection ladders are arranged on the front and rear sides of the cleaning box (3). The rear end of the cleaning box (3) is connected to the transition box (6). The cleaning box (3) is provided with a gradient plate (4) inclined toward the transition box (6). The cleaning box (3) is provided with a high-pressure flushing assembly (5).

2. A construction waste recycling device according to claim 1, characterized in that: The high-pressure flushing assembly (5) is used for flushing construction waste carried on a belt conveyor A (1). The high-pressure flushing assembly (5) comprises a cross bar (501), an intermediate bracket (502), a motor A (503), a turntable (504), a turn bar (505), a first swing arm (506), a V-shaped connecting rod (507), a second swing arm (508), a flushing frame A (509) and a flushing frame B (510). Both sides of the intermediate bracket (502) are fixed to the top side of a cleaning box (3) through the cross bar (501). The intermediate bracket (502) is provided with a long opening. The flushing frame A (509) and the flushing frame B (510) are respectively hingedly mounted on both sides of the intermediate bracket (502).

3. A construction waste recycling device according to claim 2, characterized in that: The motor A (503) is fixed on the middle bracket (502), the shaft end of the motor A (503) is connected to the rotating disk (504), and the eccentric side of the end surface of the rotating disk (504) is hinged to the rotating rod (505).

4. The construction waste recycling device according to claim 2, characterized in that: The first swing arm (506) and the V-shaped connecting rod (507) are both hinged to the free end of the rotating rod (505); the middle of the V-shaped connecting rod (507) is movably connected to the middle bracket (502); the upper end of the V-shaped connecting rod (507) extends into the long opening of the middle bracket (502) and is hinged to the second swing arm (508); the upper ends of the first swing arm (506) and the second swing arm (508) extend out of the long opening; the end of the first swing arm (506) is hinged to the flushing frame A (509); the end of the second swing arm is hinged to the flushing frame B (510); a plurality of spray heads are arranged on the flushing frame A (509) and the flushing frame B (510); the input sides of the flushing frame A (509) and the flushing frame B (510) are connected to the first water inlet pipe and the second water inlet pipe (511); wherein the second water inlet pipe (511) is a residual water recovery pipe.

5. The construction waste recycling device according to claim 1, characterized in that: The transition box (6) is connected to the inner side of the cleaning box (3) through a through opening. The transition box (6) is used for temporarily storing and processing sand, debris and water. Two openings are provided on one side of the transition box (6) close to the water removal screen (7).

6. The construction waste recycling device according to claim 1, characterized in that: The dewatering screen (7) comprises a bin body, a lifting belt (703), a dewatering component, a feeding auger (710) and a screening component. The inner cavity of the bin body is divided into a water collecting bin (701) and a material collecting bin (702) by a partition. Two groups of lifting belts (703) are installed on the upper side of the water collecting bin (701). The two groups of lifting belts (703) are connected to the bottom side of the open transition box (6). The dewatering component is installed on the bottom side of the water collecting bin (701) and connected to the output side of the lifting belt (703). The dewatering component comprises a guide plate (704) and a dewatering screen frame (705). The dewatering screen frame (705) is a frame shell structure with a closed bottom and water leakage holes arranged around the outer side. Guide plates (704) connected to the output side of the lifting belt (703) are arranged on both sides of the top of the dewatering screen frame (705).

7. The construction waste recycling device according to claim 6, characterized in that: The screening component is installed inside the material collecting bin (702), and the screening component includes a receiving hopper (706), a receiving screw (707), a gear driving device (708) and a rolling screen (709). The top of the receiving hopper (706) is open, the receiving screw (707) is arranged inside the receiving hopper (706), and the lower side of the receiving hopper (706) is provided with a rolling screen (709); the rolling screen (709) is connected with the receiving hopper (706), the rolling screen (709), and the rolling screen (709) includes a screen frame and a roller, the roller and the receiving screw (707) are driven by the gear driving device (708), and the lower side of the screen frame is provided with a discharge port.

8. The construction waste recycling device according to claim 6, characterized in that: One end of the feeding auger (710) extends into the inner side of the dewatering screen frame (705), and the other end of the feeding auger (710) extends out of the inner side of the receiving hopper (706).

9. A method for recycling construction waste, characterized in that: It is implemented based on the recycling device described in any one of claims 1 to 8, and the specific processing steps include: S1: Waste collection and transportation: S1.1: Construction waste is transported from the construction site to the main waste recycling processing line via belt conveyor A(1); S1.2: The belt conveyor A (1) conveys the waste to the cleaning box (3) of the secondary waste recycling and processing line, and in the cleaning box (3), the waste is washed under high pressure to remove the attached sand, silt, gravel and other impurities; S1.3: The cleaned waste is transferred out through the belt conveyor B(2) and processed by the recycling line, which includes crushing, iron removal and screening equipment to carry out subsequent resource processing on the waste so that the waste can be used as auxiliary materials / aggregates in construction and road engineering projects; S2: Waste enters the secondary waste recycling processing line: S2.1: During the flushing process of S1.2, the fine waste attached to the surface of the waste flows into the bottom of the cleaning box (3) together with the water, and the slope plate (4) provided in the cleaning box (3) guides the washed fine waste to the transition box (6); S2.2: The transition box (6) temporarily stores the flushed waste and water; S2.3: The waste is sent to the water collection bin (701) through the lifting belt (703) to further remove moisture from the waste; S2.4: Under the action of the water removal screen frame (705) in the water collection bin (701), the water in the waste is removed to keep the waste dry; S2.5: The dried waste is led out from the feeding auger (710) to the screening component, and the screening component selects out smaller sand and debris, that is, through the rolling screen (709) and the receiving screw (707), the fine sand in the waste is screened out to ensure the purity of the recycled material; S2.6: After the screening process, the high quality sand can be further used in construction and road engineering projects.

Images