Method for recycling construction waste

Abstract

This application belongs to the field of construction waste treatment technology and discloses a method for recycling and treating construction waste. The processing steps of the method are as follows: a dedicated reinforced concrete waste treatment device is selected, and concrete waste containing reinforcing bars is placed into the device for crushing. After the concrete is crushed, it is separated from the reinforcing bars, and the reinforcing bars are recycled. The dedicated reinforced concrete waste treatment device includes a box, a feeding hopper fixed to and connected to the top of the box, and a crushing component installed inside the box for crushing the reinforced concrete waste falling from the feeding hopper. A shielding component is installed in the feeding hopper to control the amount of waste fed and to prevent dust from escaping from the feeding hopper during the crushing process. In the process of treating reinforced concrete waste, the shielding component effectively shields the dust generated during crushing, reducing the probability of dust affecting the health of workers.

Description

Technical Field

[0001] This invention relates to the field of construction waste treatment technology, and in particular to a method for recycling and treating construction waste. Background Technology

[0002] Construction waste, also known as construction debris, refers to the slag, excavated soil, waste materials, silt, and other waste generated during the construction, laying, demolition, or repair of various buildings, structures, pipelines, etc., by construction units or individuals. During house demolition, a large amount of construction waste is generated, which contains recyclable metal waste such as steel reinforcement bars. Current technology often uses excavators, crushers, and other machinery to recycle the steel reinforcement bars from concrete.

[0003] While the above-mentioned methods can recover most of the steel bars in concrete, some steel bars embedded in small pieces of concrete are inevitably missed. If they are discarded directly, it will cause significant economic losses. In the existing technology, the concrete needs to be crushed when recycling steel bars in small pieces of concrete. Crushing concrete generates a lot of dust, which has a significant impact on the health of workers. Therefore, the recycling equipment in the relevant technology needs to be designed and improved. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a method for recycling and processing construction waste.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a method for recycling and processing construction waste, wherein the processing steps of the method are as follows: a special reinforced concrete waste processing device is selected, and concrete waste with reinforcing bars is put into it for crushing and processing. After the concrete is crushed, it is separated from the reinforcing bars, and the reinforcing bars are recycled.

[0006] The dedicated reinforced concrete waste treatment device includes a box, a feeding hopper fixed to and connected to the top of the box, and a crushing component installed inside the box for crushing the reinforced concrete waste falling from the feeding hopper. The feeding hopper is equipped with a shielding component for controlling the amount of waste fed and preventing dust from drifting out of the feeding hopper during the waste crushing process.

[0007] By adopting the above technical solution, in the process of treating reinforced concrete waste, the crushing component performs crushing treatment, and the shielding component effectively shields the dust generated during crushing, reducing the probability that the dust generated during crushing will affect the health of the workers.

[0008] Furthermore, the shielding assembly includes a splicing plate fixed to the inner wall of the feeding section of the hopper, a baffle rotatably connected to the side of the feeding section away from the splicing plate, a first cylinder fixed to the outer wall of the feeding section away from the splicing plate, a vertical rod fixed to the end of the piston rod of the first cylinder and located inside the feeding hopper, a connecting rod hinged to the upper end of the vertical rod, and a T-shaped rod hinged to the upper end of the connecting rod. The top of the baffle abuts against the bottom surface of the splicing plate on the side away from its rotating connecting axis. The bottom of the baffle is provided with a T-shaped groove for sliding cooperation of the T-shaped rod. The extending direction of the T-shaped groove is parallel to the length direction of the piston rod of the first cylinder.

[0009] By adopting the above technical solution, when the baffle is opened, the concrete waste in the feeding hopper falls to the crushing component for crushing. During crushing, to avoid material accumulation and reduce dust generation, the operator only needs to activate the first cylinder, causing the piston rod of the first cylinder to push the vertical rod. The vertical rod drives the T-shaped rod through the connecting rod, causing the T-shaped rod to slide along the T-shaped groove to a position close to the splicing plate. When the top of the baffle, away from the first cylinder, abuts against the bottom of the splicing plate, the first cylinder is closed. At this time, the baffle and the splicing plate cooperate to prevent the concrete waste in the feeding hopper from continuing to fall and affecting the crushing operation. In addition, the baffle and the splicing plate also cover the feeding section of the feeding hopper, significantly reducing the probability of dust dispersion.

[0010] Furthermore, a pressure sensor is embedded in the bottom of the splicing plate, and a dredging component is provided on the feeding hopper for clearing reinforced concrete waste stuck between the bottom of the splicing plate and the top of the baffle when the pressure value received by the pressure sensor is greater than a preset value.

[0011] By adopting the above technical solution, when some concrete waste gets stuck between the bottom of the splicing plate and the top of the baffle, the concrete waste will press against the pressure sensor. When the pressure received by the pressure sensor is greater than the preset value, the unblocking component will unblock the reinforced concrete waste stuck between the bottom of the splicing plate and the top of the baffle, which is beneficial to the baffle and the splicing plate and achieves the desired technical effect.

[0012] Furthermore, a dredging opening is provided at the intersection between the top of the baffle and the side of the baffle near the splicing plate. An inclined plate is fixed at the bottom of the baffle near the dredging opening. The dredging assembly includes a second cylinder fixed to the outer wall of the feeding hopper and a dredging block fixed to the piston rod end of the second cylinder and located inside the feeding hopper. The cross-section of the dredging block near the dredging opening is an isosceles triangle, and the width of the dredging block is smaller than the distance between the dredging opening and the bottom of the splicing plate.

[0013] Furthermore, a horizontally positioned plastic plate is provided at the bottom of the splicing plate, and the top of the plastic plate abuts against the bottom of the pressure sensor.

[0014] By adopting the above technical solution, the bottom of the plastic plate is parallel to that of the splicing plate. The setting of the plastic plate allows the concrete waste stuck between the bottom of the plastic plate and the top of the baffle to transfer pressure to the plastic plate. The setting of the plastic plate is also conducive to the pressure sensor sensing the pressure in time, thereby controlling the second cylinder through the controller, so that the piston rod of the second cylinder drives the inclined plate to move towards the dredging port. The dredging block clears the concrete waste stuck between the inclined plate and the bottom of the plastic plate, so that the baffle rotates to a state of contact with the bottom of the plastic plate. At this time, the baffle, dredging block and plastic plate cooperate to block the dredging port, reducing the probability of dust discharge and ensuring that the waste in the feeding hopper will not affect the subsequent crushing operation.

[0015] Furthermore, the crushing assembly includes a first crushing roller rotatably mounted between the side walls on both sides of the housing, a second crushing roller rotatably mounted between the side walls on both sides of the housing, and a crushing motor fixed to the outer wall of the housing for driving the first crushing roller. Multiple crushing teeth are fixed on the outer walls of both the first and second crushing rollers.

[0016] By adopting the above technical solution, after the crushing motor starts working, it drives the first crushing roller to rotate. The crushing teeth on the first crushing roller work together with the crushing teeth on the second crushing roller to crush the concrete waste, which helps to separate the concrete from the steel bars and recycle the steel bars.

[0017] Furthermore, the inner wall of the box is rotatably equipped with multiple conveyor rollers for conveying the crushed and separated steel bars. An upper conveyor belt assembly is located below the conveyor rollers and is used to convey the concrete debris generated after crushing. The conveying direction of the upper conveyor belt assembly is opposite to that of the conveyor rollers. A first opening is provided on one side wall of the box for the steel bars conveyed from the conveyor rollers to exit. A discharge port is provided on the side wall of the box away from the first opening for the upper conveyor belt assembly and the slag on the upper conveyor belt assembly to pass through. A lower conveyor belt assembly is located below the upper conveyor belt assembly and is used to convey the steel bars falling from the conveyor rollers. An inlet is provided on the side wall of the box on the same side as the first opening for the lower conveyor belt assembly and the steel bars on the lower conveyor belt assembly to enter. A second opening is provided on the side of the box away from the first opening for the lower conveyor belt assembly and the steel bars on the lower conveyor belt assembly to exit. A steel bar collection box is provided on the side wall of the box near the second opening.

[0018] By adopting the above technical solution, both the upper and lower conveyor belt assemblies are driven by belt drives. The lower conveyor belt assembly uses a steel mesh belt design. When concrete waste is conveyed on the steel mesh belt, reinforcing bars continue to move forward with it, while concrete debris falls through the mesh of the steel mesh belt. After the crushing assembly crushes the reinforced concrete waste, it falls through the gaps between adjacent conveyor rollers onto the upper conveyor belt assembly, and then exits from the discharge port. A collection device (such as sacks) is installed at the discharge end of the upper conveyor belt assembly to collect the concrete waste. The conveyor rollers have a smaller diameter, and the reinforcing bar waste is conveyed forward by multiple rollers, finally falling from the first opening onto the lower conveyor belt assembly. From there, it is conveyed to the inlet and the second opening, and then collected in a reinforcing bar collection box.

[0019] Furthermore, two symmetrically arranged upright plates are fixed on the side wall of the housing near the first opening, and a side plate that abuts against the top of the lower conveyor belt assembly is fixed between the two upright plates. Both upright plates are provided with nozzles for spray dust removal.

[0020] By adopting the above technical solution, it is beneficial to reduce the probability of dust generated by a small amount of concrete waste conveyed through the first port along with the conveyor roller.

[0021] Furthermore, a discharge port is provided on the side wall of the box on the same side as the first opening, and a debris collection box is provided on the bottom wall of the box body, which is in contact with the side walls on both sides of the discharge port.

[0022] By adopting the above technical solution, the debris collection box collects a small amount of concrete debris falling from the steel mesh conveyor belt assembly for centralized processing.

[0023] In summary, the present invention has the following beneficial effects:

[0024] 1. In this application, during the processing of reinforced concrete waste, the crushing component performs crushing treatment, and the shielding component effectively shields the dust generated during crushing, reducing the probability that the dust generated during crushing will affect the health of the workers.

[0025] 2. In this application, when the baffle is opened, the concrete waste in the hopper falls to the crushing component for crushing. During crushing, to avoid material accumulation and reduce dust generation, the operator only needs to start the first cylinder, which pushes the piston rod of the first cylinder to push the vertical rod. The vertical rod drives the T-shaped rod through the connecting rod, causing the T-shaped rod to slide along the T-shaped groove to a position close to the splicing plate. When the top of the baffle away from the first cylinder abuts against the bottom of the splicing plate, the first cylinder is closed. At this time, the baffle and the splicing plate cooperate to prevent the concrete waste in the hopper from continuing to fall and affecting the crushing operation. In addition, the baffle and the splicing plate also block the feeding section of the hopper, which greatly reduces the probability of dust dispersion.

[0026] 3. In this application, after the crushing motor is working, it drives the first crushing roller to rotate. The crushing teeth on the first crushing roller cooperate with the crushing teeth on the second crushing roller to crush the concrete waste, which is beneficial to separating the concrete from the steel bars and recycling the steel bars. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the structure of the crushing component in an embodiment of the present invention;

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram illustrating the state of the shielding component when it is shielding the feeding section of the hopper, according to an embodiment of the present invention.

[0031] Figure 5 This is a schematic diagram illustrating the state of the shielding component during material unloading after it has been opened, according to an embodiment of the present invention.

[0032] Figure 6 This is a schematic diagram illustrating the connecting rod and its connection structure in an embodiment of the present invention.

[0033] In the diagram: 1. Box body; 11. Feed hopper; 12. First outlet; 13. Discharge port; 14. Feed inlet; 15. Second outlet; 16. Rebar collection box; 17. Vertical plate; 171. Side plate; 172. Nozzle; 18. Discharge port; 19. Debris collection box; 2. Crushing assembly; 21. First crushing roller; 22. Second crushing roller; 23. Crushing motor; 24. Crushing teeth; 3. Shielding assembly; 31. Splicing plate; 311. Pressure sensor; 312. Plastic plate; 32. Baffle; 321. T-shaped chute; 322. Unblocking port; 323. Inclined plate; 33. First cylinder; 34. Vertical rod; 35. Connecting rod; 36. T-shaped rod body; 4. Unblocking assembly; 41. Second cylinder; 42. Unblocking block; 5. Conveyor roller; 6. Upper conveyor belt assembly; 7. Lower conveyor belt assembly. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] like Figure 1-6 As shown in the illustration, this application discloses a method for recycling and processing construction waste. The processing steps of the method are as follows: a dedicated reinforced concrete waste processing device is used to place concrete waste containing reinforcing bars into the device for crushing. After the concrete is crushed, it is separated from the reinforcing bars, and the reinforcing bars are recycled. The dedicated reinforced concrete waste processing device includes a housing 1, a feeding hopper 11 fixed to and connected to the top of the housing 1, and a crushing component 2 disposed within the housing 1 for crushing the reinforced concrete waste falling from the feeding hopper 11. The feeding hopper 11 is equipped with a shielding component 3 for controlling the amount of waste fed and preventing dust from escaping from the feeding hopper 11 during the crushing process. During the processing of the reinforced concrete waste, the crushing component 2 performs the crushing process, and the shielding component 3 effectively shields the dust generated during crushing, reducing the probability of dust affecting the health of workers. Furthermore, the shielding component 3 can also control the amount of waste fed, reducing the probability of waste accumulating below the feeding hopper 11 and affecting the crushing effect and efficiency, thus facilitating the smooth progress of the reinforcing bar recycling work.

[0036] The shielding assembly 3 includes a splicing plate 31 fixed to the inner wall of the feeding section of the feeding hopper 11, a baffle 32 rotatably connected to the side of the feeding section of the feeding hopper 11 away from the splicing plate 31, a first cylinder 33 fixed to the outer wall of the feeding section of the feeding hopper 11 away from the splicing plate 31, a vertical rod 34 fixed to the end of the piston rod of the first cylinder 33 and located inside the feeding hopper 11, a connecting rod 35 hinged to the upper end of the vertical rod 34, and a T-shaped rod 36 hinged to the upper end of the connecting rod 35. The top of the baffle 32 abuts against the bottom surface of the splicing plate 31 on the side away from its rotating connecting axis. The bottom of the baffle 32 is provided with a T-shaped groove 321 for sliding cooperation with the T-shaped rod 36. The extending direction of the T-shaped groove 321 is parallel to the length direction of the piston rod of the first cylinder 33.

[0037] When the baffle 32 is opened, the concrete waste in the hopper 11 falls to the crushing component 2 for crushing. During crushing, to avoid material accumulation and reduce dust generation, the operator only needs to start the first cylinder 33, which pushes the vertical rod 34. The vertical rod 34 drives the T-shaped rod 36 through the connecting rod 35, causing the T-shaped rod 36 to slide along the T-shaped slide groove 321 to a position close to the splicing plate 31, until the top of the baffle 32, away from the first cylinder 33, abuts against the bottom of the splicing plate 31. Then, the first cylinder 33 is closed. At this time, the baffle 32 and the splicing plate 31 cooperate to prevent the concrete waste in the hopper 11 from continuing to fall and affecting the crushing operation. In addition, the baffle 32 and the splicing plate 31 also block the feeding section of the hopper 11, which greatly reduces the probability of dust dispersion.

[0038] A pressure sensor 311 is embedded in the bottom of the splicing plate 31. A dredging component 4 is provided on the feeding hopper 11 to dredge the reinforced concrete waste stuck between the bottom of the splicing plate 31 and the top of the baffle 32 when the pressure value received by the pressure sensor 311 is greater than a preset value. The dedicated reinforced concrete waste treatment device is equipped with a controller (the controller is not shown in the figure. The controller is used to control the various electrical components in this application, including the dredging component 4).

[0039] When some concrete waste gets stuck between the bottom of the splicing plate 31 and the top of the baffle 32, the concrete waste will press against the pressure sensor 311. When the pressure received by the pressure sensor 311 is greater than the preset value, the controller uses the unblocking component 4 to unblock the reinforced concrete waste stuck between the bottom of the splicing plate 31 and the top of the baffle 32, which is beneficial to the baffle 32 and the splicing plate 31 and achieves the desired technical effect.

[0040] A drainage port 322 is provided at the intersection between the top of the baffle 32 and the side of the baffle 32 near the splicing plate 31. An inclined plate 323 is fixed at the bottom of the baffle 32 near the drainage port 322. The drainage assembly 4 includes a second cylinder 41 fixed to the outer wall of the feeding hopper 11 and a drainage block 42 fixed to the piston rod end of the second cylinder 41 and located inside the feeding hopper 11. The cross-section of the drainage block 42 near the drainage port 322 is an isosceles triangle, and the width of the drainage block 42 is less than the distance between the drainage port 322 and the bottom of the splicing plate 31. A horizontally arranged plastic plate 312 is provided at the bottom of the splicing plate 31, and the top of the plastic plate 312 abuts against the bottom of the pressure sensor 311. The plastic plate 312 is parallel to the bottom of the splicing plate 31. The plastic plate 312 allows the concrete waste stuck between the bottom of the plastic plate 312 and the top of the baffle 32 to transfer pressure to the plastic plate 312. The plastic plate 312 also allows the pressure sensor 311 to detect the pressure in time, thereby controlling the second cylinder 41 through the controller. This causes the piston rod of the second cylinder 41 to move the inclined plate 323 toward the dredging port 322. The dredging block 42 clears the concrete waste stuck between the inclined plate 323 and the bottom of the plastic plate 312, so that the baffle 32 can rotate to abut against the bottom of the plastic plate 312. At this time, the baffle 32, the dredging block 42, and the plastic plate 312 cooperate to block the dredging port 322, reducing the probability of dust discharge and ensuring that the waste in the feeding hopper 11 will not affect the subsequent crushing operation.

[0041] The crushing assembly 2 includes a first crushing roller 21 rotatably mounted between the side walls of the housing 1, a second crushing roller 22 rotatably mounted between the side walls of the housing 1, and a crushing motor 23 fixed to the outer wall of the housing 1 for driving the first crushing roller 21. Multiple crushing teeth 24 are fixed on the outer walls of both the first and second crushing rollers 21. When the crushing motor 23 operates, it drives the first crushing roller 21 to rotate. The crushing teeth 24 on the first and second crushing rollers 22 work together to crush the concrete waste, facilitating the separation of concrete from reinforcing steel and enabling the recycling of the reinforcing steel. In other embodiments, to improve the crushing effect on concrete waste, a motor can be installed on the side wall of the housing 1 to drive the second crushing roller 22 to rotate in the opposite direction to the first crushing roller 21.

[0042] Multiple conveyor rollers 5 are rotatably mounted on the inner wall of the housing 1 for conveying the crushed and separated steel bars. An upper conveyor belt assembly 6 is located below the conveyor rollers 5 and is used to convey the concrete debris generated after crushing. The conveying direction of the upper conveyor belt assembly 6 is opposite to that of the conveyor rollers 5. A first opening 12 is provided on one side wall of the housing 1 for the steel bars conveyed from the conveyor rollers 5 to exit. A passage for the upper conveyor belt assembly 6 and the slag on the upper conveyor belt assembly 6 to pass through is provided on the side wall of the housing 1 away from the first opening 12. The discharge port 13 is provided with a lower conveyor belt assembly 7 located below the upper conveyor belt assembly 6 for conveying steel bars falling from the conveyor roller 5. The side wall of the box 1 on the same side as the first opening 12 is provided with an inlet 14 for the lower conveyor belt assembly 7 and the steel bars on the lower conveyor belt assembly 7 to enter. The side of the box 1 away from the first opening 12 is provided with a second opening 15 for the lower conveyor belt assembly 7 and the steel bars on the lower conveyor belt assembly 7 to exit. A steel bar collection box 16 is provided on the side wall of the box 1 near the second opening 15.

[0043] Both the upper conveyor belt assembly 6 and the lower conveyor belt assembly 7 are driven by belt drives. The lower conveyor belt assembly 7 uses a steel mesh belt design. When concrete waste is conveyed on the steel mesh belt of the lower conveyor belt assembly 7, the reinforcing bars continue to move forward with it, while the concrete debris falls through the mesh of the steel mesh belt. After the crushing assembly 2 crushes the reinforced concrete waste, the concrete waste falls through the gaps between adjacent conveyor rollers 5 onto the upper conveyor belt assembly 6, and then exits from the discharge port 13. A corresponding collection device (such as a sack) is installed at the discharge end of the upper conveyor belt assembly 6 to collect the concrete waste. The conveyor rollers 5 have a smaller diameter, and the reinforcing bar waste is conveyed forward with multiple conveyor rollers 5, finally falling from the first opening 12 onto the lower conveyor belt assembly 7, and then conveyed by the lower conveyor belt assembly 7 to the inlet 14 and the second opening 15, where it is collected in the reinforcing bar collection box 16.

[0044] To reduce the probability of dust generated by a small amount of concrete waste conveyed through the first opening 12 along with the conveyor roller 5, two symmetrically arranged upright plates 17 are fixed on the side wall of the housing 1 near the first opening 12. A side plate 171 that abuts against the top of the lower conveyor belt assembly 7 is fixed between the two upright plates 17. Both upright plates 17 are equipped with nozzles 172 for spray dust suppression.

[0045] In this embodiment, a discharge port 18 is provided on the side wall of the box 1 on the same side as the first opening 12, and a debris collection box 19 is provided on the bottom inner wall of the box 1, which is attached to both sides of the discharge port 18. The debris collection box 19 collects a small amount of concrete debris falling from the steel mesh belt lower conveyor assembly 7 for centralized processing.

[0046] The principle of the construction waste recycling method in this embodiment is as follows: During the processing of reinforced concrete waste, the crushing component 2 performs crushing, and the shielding component 3 effectively shields the dust generated during crushing, reducing the probability that the dust generated during crushing will affect the health of the workers. In addition, the shielding component 3 can also be used to control the amount of waste fed, reducing the probability that waste will accumulate under the feeding hopper 11 and affect the crushing effect and efficiency, which is conducive to the smooth progress of the steel reinforcement recycling work.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for recycling and disposing of construction waste, characterized in that, The processing steps of the construction waste recycling and treatment method are as follows: Select a special reinforced concrete waste treatment device, put the concrete waste with steel bars into it for crushing and treatment, and after the concrete is crushed, it is separated from the steel bars, and the steel bars are recycled. The dedicated reinforced concrete waste treatment device includes a box (1), a feeding hopper (11) fixed to and connected to the top of the box (1), and a crushing component (2) set inside the box (1) for crushing the reinforced concrete waste falling from the feeding hopper (11). The feeding hopper (11) is provided with a shielding component (3) for controlling the amount of waste fed and preventing dust from drifting from the feeding hopper (11) during the waste crushing process. The shielding assembly (3) includes a splicing plate (31) fixed to the inner wall of the feeding section of the hopper (11), a baffle (32) rotatably connected to the side of the feeding section away from the splicing plate (31) of the feeding section of the hopper (11), a first cylinder (33) fixed to the outer wall of the feeding section away from the splicing plate (31) of the feeding section of the hopper (11), a vertical rod (34) fixed to the piston rod end of the first cylinder (33) and located inside the feeding hopper (11), and a vertical rod (34) connected to the piston rod end of the first cylinder (33). The upper end of the rod (34) is hinged to a connecting rod (35) and a T-shaped rod (36) is hinged to the upper end of the connecting rod (35). The top of the baffle (32) is away from its rotating connecting axis and abuts against the bottom surface of the splicing plate (31). The bottom of the baffle (32) is provided with a T-shaped groove (321) for sliding cooperation of the T-shaped rod (36). The extension direction of the T-shaped groove (321) is parallel to the length direction of the piston rod of the first cylinder (33). The bottom of the splicing plate (31) is embedded with a pressure sensor (311), and the feeding hopper (11) is provided with a dredging component (4) for clearing the reinforced concrete waste stuck between the bottom of the splicing plate (31) and the top of the baffle (32) when the pressure value received by the pressure sensor (311) is greater than the preset value. A dredging opening (322) is provided at the intersection between the top of the baffle (32) and the side of the baffle (32) near the splicing plate (31). An inclined plate (323) is fixed at the bottom of the baffle (32) near the dredging opening (322). The dredging assembly (4) includes a second cylinder (41) fixed to the outer wall of the feeding hopper (11) and a dredging block (42) fixed to the piston rod end of the second cylinder (41) and located in the feeding hopper (11). The cross-section of the dredging block (42) near the dredging opening (322) is an isosceles triangle. The width of the dredging block (42) is smaller than the distance between the dredging opening (322) and the bottom of the splicing plate (31).

2. The method for recycling and disposing of construction waste according to claim 1, characterized in that: The bottom of the splicing plate (31) is provided with a horizontally arranged plastic plate (312), and the top of the plastic plate (312) abuts against the bottom of the pressure sensor (311).

3. The method for recycling and disposing of construction waste according to claim 1, characterized in that: The crushing assembly (2) includes a first crushing roller (21) rotatably mounted between the side walls on both sides of the housing (1), a second crushing roller (22) rotatably mounted between the side walls on both sides of the housing (1), and a crushing motor (23) fixed to the outer wall of the housing (1) for driving the first crushing roller (21). Multiple crushing teeth (24) are fixed on the outer walls of the first crushing roller (21) and the second crushing roller (22).

4. The method for recycling and disposing of construction waste according to claim 3, characterized in that: The inner wall of the box (1) is rotatably equipped with multiple conveying rollers (5) for conveying the crushed and separated steel bars. Inside the box (1) is an upper conveyor belt assembly (6) located below the conveying rollers (5) for conveying the concrete debris generated after crushing. The conveying direction of the upper conveyor belt assembly (6) is opposite to that of the conveying rollers (5). A first opening (12) is provided on one side wall of the box (1) for the steel bars conveyed from the conveying rollers (5) to exit. A discharge port (1) is provided on the side wall of the box (1) away from the first opening (12) for the upper conveyor belt assembly (6) and the slag on the upper conveyor belt assembly (6) to pass through. 3) The box (1) is provided with a lower conveyor belt assembly (7) located below the upper conveyor belt assembly (6) for conveying the steel bars falling from the conveyor roller (5). The side wall of the box (1) on the same side as the first opening (12) is provided with an inlet (14) for the lower conveyor belt assembly (7) and the steel bars on the lower conveyor belt assembly (7) to enter. The side of the box (1) away from the first opening (12) is provided with a second opening (15) for the lower conveyor belt assembly (7) and the steel bars on the lower conveyor belt assembly (7) to exit. A steel bar collection box (16) is provided on the side wall of the box (1) near the second opening (15).

5. The method for recycling and disposing of construction waste according to claim 4, characterized in that: Two symmetrically arranged upright plates (17) are fixed on the side wall of the box (1) near the first opening (12). A side plate (171) that abuts against the top of the lower conveyor belt assembly (7) is fixed between the two upright plates (17). Each of the two upright plates (17) is provided with a nozzle (172) for spray dust removal.

6. The method for recycling and disposing of construction waste according to claim 5, characterized in that: A discharge port (18) is provided on the side wall of the box (1) on the same side as the first opening (12), and a debris collection box (19) is provided on the bottom wall of the box (1) that fits against the side walls on both sides of the discharge port (18).

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