Green recycling and reusing system for construction waste

Abstract

The invention discloses a building waste green recycling system, and relates to the technical field of building waste crushing and recycling, the building waste green recycling system comprises a support, the upper end face of the support is obliquely fixed with a feed inlet; the conveying assembly is mounted in the feeding hole; the crushing bin is fixed to the upper end face of the support and communicates with the feeding port. The separating assembly is mounted in the crushing bin; the aggregate bin and the steel bar bin are both fixed in the support and located below the crushing bin; wherein the separation assembly comprises a rubbing assembly and a crushing assembly, one end of the rubbing assembly is hinged to the interior of the crushing bin, the other end of the rubbing assembly is hinged to the output end of a cylinder body, the cylinder body is hinged to the outer wall of the crushing bin, and the crushing assembly is installed in the crushing bin and located above the rubbing assembly.

Description

Technical Field

[0001] This invention relates to the field of construction waste crushing and recycling technology, specifically a green recycling and reuse system for construction waste. Background Technology

[0002] With the acceleration of urbanization, the large amount of construction waste generated from the demolition of old buildings, especially the reinforced concrete components, has become a major challenge for environmental protection and resource recycling. The key to the effective recycling of reinforced concrete lies in completely separating the steel bars from the concrete surrounding them and obtaining pure, well-formed recycled concrete aggregates. This is especially important for long and narrow reinforced concrete components, where the steel bars inside the concrete are relatively intact, have high recycling value, and are easy to reuse.

[0003] Currently, the common processing method is to use a jaw crusher or impact crusher for one-time high-intensity crushing, and then use a magnetic separator to recover the steel bars. This method has obvious disadvantages: the strong impact can easily cause the steel bars to bend and entangle excessively, and cause a large amount of concrete to adhere to their surface, reducing the quality and value of the steel bars to be recycled; the crushing process causes serious dust emission and high energy consumption.

[0004] To address the above problems, this invention provides a green recycling and reuse system for construction waste. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a green recycling and reuse system for construction waste, comprising: The support has an inclined feed port fixed to its upper end face; The conveying assembly is installed inside the feed inlet; The crushing chamber is fixed to the upper end face of the support and is connected to the feed inlet; The separation component is installed inside the crushing chamber; Both the aggregate bin and the steel bar bin are fixed inside the support frame and located below the crushing bin; The separation component includes a kneading component and a crushing component. One end of the kneading component is hinged to the crushing chamber, and the other end is hinged to the output end of the cylinder. The cylinder is hinged to the outer wall of the crushing chamber. The crushing component is installed in the crushing chamber, driven by a motor fixed to the outer wall of the crushing chamber, and located above the kneading component.

[0006] Further, preferably, the conveying assembly includes: The conveyor column is rotatably mounted inside the feed inlet and is connected to the output end of the motor by a synchronous belt; Multiple conveyor rods are configured and circumferentially fixed to the outer wall of the conveyor column; The end of the conveying rod away from the conveying column is close to the inner wall of the feed inlet.

[0007] Furthermore, preferably, a partition is fixed inside the crushing chamber, and the partition and the kneading assembly divide the crushing chamber into a discharge chamber and a crushing and separating chamber. The crushing assembly is located inside the crushing and separating chamber. A discharge port is fixed at the lower end of the discharge chamber, and an outlet is opened on the side wall of the discharge port. A sorting plate is fixed at an inclination inside the discharge port, and the sorting plate conveys steel bars to the steel bar silo through the outlet.

[0008] Furthermore, preferably, the discharge hopper is also equipped with multiple air blowing heads, which blow air along the inclined direction of the sorting plate, and the top of the discharge hopper is connected to a negative pressure suction pipe.

[0009] Further, preferably, the kneading component includes: The first hinge is hinged to the side of the crushing chamber near the feed inlet; The screening plate is slidably mounted on the first hinge member using multiple arc-shaped columns, and a return spring is provided between the multiple arc-shaped columns and the screening plate; The second hinge is installed at the end of the screening plate away from the first hinge and is hinged to the cylinder.

[0010] Furthermore, preferably, the screening plate has multiple screening holes, and a steel bar outlet is provided at a position away from the first hinge member, and multiple protruding balls are fixed on the inner wall of the screening plate.

[0011] Further, preferably, the crushing component includes: A rotating shaft is rotatably mounted inside the crushing chamber and is driven by the motor. Two fixed discs are configured and symmetrically fixed inside the crushing chamber; Multiple crushing discs are configured and fixed at equal intervals on the rotating shaft, and are located between two of the fixed discs; Multiple striking columns are arranged circumferentially on the crushing disc, and multiple protrusions are fixed on their outer walls. The striking elements are configured in multiple groups and evenly distributed along the circumference of the crushing disc. Each group of striking elements is hinged to multiple crushing discs via a connecting shaft. Each group of striking elements includes multiple striking hammers, which are located between two crushing discs respectively. The adjustment components are configured as two, respectively fixed on one side of the fixed plate that is close to each other; Multiple limiting components are configured and arranged circumferentially within the adjusting component, and each corresponds to one of the multiple striking hammers.

[0012] Further, preferably, the adjustment component includes: The disc body is fixed on the fixed disc; A rotating disk is rotatably mounted on the disk body; The adjusting disc is fixed to the disc body by a column, and its outer wall has two recessed adjusting ports.

[0013] Further, preferably, the limiting component includes: An adjusting block is slidably disposed on the disc body, and an adjusting tooth is fixed on the side of the block near the striking hammer, the adjusting tooth engaging with the outer wall of the striking hammer; A fixing component is fixed to one end of the adjusting block and is slidably disposed inside the rotating disk using a guide post, and a spring is provided between the fixing component and the rotating disk; A sliding block is slidably disposed within the adjusting block, and reset posts are symmetrically fixed at both ends of the block. A limiting post is slidably disposed within the sliding block, and a pressing plate is fixed to one end of the post near the adjusting plate. A spring is provided between the pressing plate and the sliding block. Two L-shaped limit plates are configured and symmetrically fixed to the limit posts.

[0014] Furthermore, preferably, a torsion spring is sleeved on the connecting shaft, the initial state of the hammer is the extended state, two limiting holes are opened on the outer wall of the hammer, a guide surface is opened on the limiting post and is inserted into the limiting holes for limiting, and the initial state of the spring is the compressed state.

[0015] Compared with existing technologies, the present invention provides a green recycling and reuse system for construction waste, which has the following beneficial effects: This invention utilizes a crushing and kneading component to crush and knead strip-shaped reinforced concrete, improving the separation of the steel bars and concrete. The movable kneading component kneads and peels the reinforced concrete components, allowing the steel bars to be extracted from the concrete relatively completely, avoiding excessive bending and entanglement. Minimal concrete residue adheres to the surface, resulting in straighter and cleaner recycled steel bars. This significantly improves the quality and market value of the recycled resource, facilitating direct recycling. Furthermore, a negative pressure dust removal system is employed, with a negative pressure suction pipe connected to the top of the discharge hopper. This continuously draws dust generated during the crushing and kneading process into the dust removal system. Simultaneously, an air blower inside the discharge hopper works in conjunction with the negative pressure suction pipe to recover dust, greatly suppressing dust dispersion into the working environment and improving the working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a green recycling and reuse system for construction waste. Figure 2This is a schematic diagram of the internal structure of a green recycling and reuse system for construction waste. Figure 3 This is a schematic diagram of the kneading component. Figure 4 This is a schematic diagram of the crushing component. Figure 5 A schematic diagram of the structure of the adjustment component; Figure 6 This is a schematic diagram of the limit component. Figure 7 A schematic diagram of the connection structure when the limit component is in the limit state; In the diagram: 1. Support frame; 2. Feed inlet; 3. Conveying assembly; 4. Crushing chamber; 5. Separating assembly; 6. Aggregate bin; 7. Rebar bin; 31. Conveying column; 32. Conveying rod; 41. Partition plate; 42. Crushing and separating chamber; 43. Discharge port; 44. Sorting plate; 45. Air blowing head; 51. Kneading assembly; 52. Crushing assembly; 511. First hinge; 512. Screening plate; 513. Second hinge; 514. Arc-shaped column; 515. Rebar outlet; 521. Rotating shaft 522. Fixed disc; 523. Crushing disc; 524. Striking post; 525. Striking hammer; 526. Disc body; 527. Rotating disc; 528. Adjusting disc; 529. Limiting assembly; 5251. Connecting shaft; 5281. Adjusting port; 5291. Adjusting block; 5292. Adjusting tooth; 5293. Fixing component; 5294. Guide post; 5295. Sliding block; 5296. Reset post; 5297. Limiting post; 5298. Pressing disc; 5299. Limiting plate. Detailed Implementation

[0017] Reference Figures 1-7 This invention provides a technical solution: a green recycling and reuse system for construction waste, comprising: The upper end face of the bracket 1 is inclined and fixed with the feed port 2; Conveying assembly 3 is installed inside the feed inlet 2; The crushing chamber 4 is fixed to the upper end face of the support 1 and is connected to the feed inlet 2; Separation component 5 is installed inside the crushing chamber 4; Aggregate bin 6 and steel bar bin 7 are both fixed inside the support 1 and located below the crushing bin 4; The separation component 5 includes a kneading component 51 and a crushing component 52. One end of the kneading component 51 is hinged to the crushing chamber 4, and the other end is hinged to the output end of the cylinder. The cylinder is hinged to the outer wall of the crushing chamber 4. The crushing component 52 is installed in the crushing chamber 4, driven by a motor fixed to the outer wall of the crushing chamber 4, and is located above the kneading component 51.

[0018] In other words, the inclined feed inlet 2 facilitates the entry of reinforced concrete and reduces the amount of dust emitted during the feeding process.

[0019] In this embodiment, the conveying component 3 includes: The conveyor column 31 is rotatably disposed inside the feed inlet 2 and is connected to the output end of the motor by a synchronous belt; Conveying rods 32 are configured in multiples and are circumferentially fixed to the outer wall of the conveying column 31; The end of the conveying rod 32 away from the conveying column 31 is close to the inner wall of the feed inlet 2.

[0020] It should be noted that the motor drives the conveyor column 31 and the crushing component 52 to rotate clockwise, which facilitates the conveyor column 31 to drive the conveyor rod 32 to accelerate and push the material.

[0021] In other words, the conveyor rod 32 can push and accelerate the reinforced concrete, giving it a faster initial velocity and increasing the impact force, thereby achieving initial crushing.

[0022] In addition, a partition 41 is fixed inside the crushing chamber 4. The partition 41 and the kneading component 51 divide the crushing chamber 4 into a discharge chamber and a crushing and separating chamber 42. The crushing component 52 is located inside the crushing and separating chamber 42. A discharge port 43 is fixed at the lower end of the discharge chamber. An outlet is opened on the side wall of the discharge port 43. A sorting plate 44 is fixed at an inclination inside the discharge port 43, and the sorting plate 44 conveys steel bars to the steel bar chamber 7 through the outlet.

[0023] The partition 41 does not contact the kneading component 51, and the gap between them allows dust to pass through.

[0024] Preferably, the discharge bin is further equipped with a plurality of air blowing heads 45, which blow air along the inclined direction of the sorting plate 44, and the top of the discharge bin is connected to a negative pressure suction pipe.

[0025] In other words, by adopting negative pressure dust removal, the top of the discharge hopper is connected to a negative pressure suction pipe, which can continuously suck the dust generated during the crushing and kneading process into the dust removal system. At the same time, the air blowing head 45 installed in the discharge hopper can work with the negative pressure suction pipe to recover the dust, which greatly suppresses the escape of dust into the working environment and improves the working environment. Furthermore, the air blowing head 45 blowing air along the inclined direction of the sorting plate 44 can prevent a large amount of dust from falling into the aggregate hopper 6 and the steel bar hopper 7.

[0026] In this embodiment, the kneading component 51 includes: The first hinge 511 is hinged to the side of the crushing chamber 4 near the feed inlet 2; The screening plate 512 is slidably mounted on the first hinge member 511 using multiple arc-shaped columns 514, and a return spring is provided between the multiple arc-shaped columns 514 and the screening plate 512. The second hinge 513 is installed at the end of the screening plate 512 away from the first hinge 511 and is hinged to the cylinder body.

[0027] It should be noted that the cylinder body reciprocates, thereby driving the screening plate 512 to rotate back and forth, squeezing the material. At the same time, the rotation of the crushing component 52, in conjunction with the reciprocating motion of the cylinder body, allows the screening plate 512 to slide relative to the crushing component 52, thereby performing a kneading operation and improving the separation effect of steel bars and concrete.

[0028] Specifically, the sliding length of the screening plate 512 through the arc-shaped column 514 is insufficient to allow the material to flow out. Specifically, when the screening plate 512 is close to the crushing component 52, it is driven to slide. When the screening plate 512 is far away from the crushing component 52, it is reset and slid by the reset spring, thereby performing reciprocating kneading operation.

[0029] In a preferred embodiment, the screening plate 512 has a plurality of screening holes and a steel bar outlet 515 is provided at a position away from the first hinge member 511. The inner wall of the screening plate 512 is fixed with a plurality of protruding balls.

[0030] In other words, the multiple raised balls can significantly increase the degree of squeezing and kneading, further improving the separation effect.

[0031] In this embodiment, the crushing component 52 includes: The rotating shaft 521 is rotatably disposed inside the crushing chamber 4 and is driven by the motor. Two fixed disks 522 are configured and symmetrically fixed inside the crushing chamber 4; Multiple crushing discs 523 are configured and fixed at equal intervals on the rotating shaft 521, and are located between two of the fixed discs 522; Multiple striking posts 524 are configured and arranged circumferentially on the crushing disc 523, and multiple protrusions are fixed on their outer walls. The striking components are configured in multiple groups and are evenly distributed along the circumference of the crushing disc 523. Each group of striking components is hinged to multiple crushing discs 523 via a connecting shaft 5251. Each group of striking components includes multiple striking hammers 525, and the multiple striking hammers 525 are respectively located between two crushing discs 523. The adjustment components are configured as two, respectively fixed on one side of the fixed plate 522 that are close to each other; Multiple limiting components 529 are configured and arranged circumferentially within the adjusting component, and each corresponds to one of the multiple striking hammers 525.

[0032] When the material impacts the crushing component 52 through the conveying component 3, it undergoes deep secondary crushing through the striking column 524 and striking hammer 525. The material after secondary crushing is then subjected to tertiary crushing through the kneading component 51, which greatly improves the separation effect.

[0033] The movable kneading component 51 is used to knead and peel the reinforced concrete component, so that the steel bars can be extracted from the concrete relatively completely, avoiding excessive bending and entanglement, and there is very little concrete residue adhering to the surface. The recycled steel bars are relatively straight and clean, which significantly improves their quality and market value as a renewable resource and facilitates direct recycling.

[0034] In a preferred embodiment, the adjustment component includes: The disk body 526 is fixed on the fixed disk 522; Rotary disk 527 is rotatably mounted on disk body 526; The adjusting disc 528 is fixed to the disc body 526 by a column, and its outer wall has two recessed adjusting ports 5281.

[0035] It should be noted that the rotating disk 527 is fixedly connected to the rotating shaft 521, and it rotates synchronously with the crushing disk 523.

[0036] Preferably, the limiting component 529 includes: An adjusting block 5291 is slidably disposed on the disc body 526, and an adjusting tooth 5292 is fixed on the side of the adjusting block 5291 near the striking hammer 525. The adjusting tooth 5292 meshes with the outer wall of the striking hammer 525. The fixing member 5293 is fixed to one end of the adjusting block 5291 and is slidably disposed in the rotating disk 527 by means of the guide post 5294, and a spring is provided between the fixing member 5293 and the rotating disk 527. The sliding block 5295 is slidably disposed within the adjusting block 5291, and its two ends are symmetrically fixed with reset posts 5296; The limiting post 5297 is slidably disposed within the sliding block 5295, and a pressing plate 5298 is fixed at one end of the limiting post 5297 near the adjusting plate 528. A spring 2 is disposed between the pressing plate 5298 and the sliding block 5295. Two L-shaped limit plates 5299 are configured and symmetrically fixed to the limit post 5297.

[0037] It should be noted that the initial state of the limit plate 5299 is that it is engaged with the rotating disk 527 for limiting.

[0038] In addition, a torsion spring is sleeved on the connecting shaft 5251, the initial state of the hammer 525 is the extended state, two limiting holes are opened on the outer wall of the hammer 525, a guide surface is opened on the limiting post 5297 and it is inserted into the limiting hole for limiting, and the initial state of the spring is the compressed state.

[0039] It should be noted that the initial state of the striking hammer 525 is that it is in a limited state through a limiting hole and the limiting post 5297.

[0040] Specifically, when the rotating disk 527 drives the limiting component 529 to rotate to the adjusting port 5281, the limiting post 5297 disengages from the limiting state of the hammer 525 and the rotating disk 527 via the second spring. Then, the first spring pushes the adjusting block 5291 to slide, thereby driving the hammer 525 to rotate via the adjusting tooth 5292, causing part of the hammer 525 to be retracted into the crushing disk 523. At this time, the unretracted part can hook the protruding ball, thereby assisting the kneading component 51 to slide. And when the limiting post 5297 disengages from the adjusting port 5281, it enters the hammer 5295. The hammer 525 is limited in another limiting hole on the side to prevent it from resetting through the torsion spring. When the limiting post 5297 passes the next adjustment port 5281, the limiting post 5297 is released from the limiting state of the hammer 525 and the rotating disk 527 again through the second spring. At this time, the torsion spring drives the hammer 525 and the adjustment block 5291 to reset. Because the torsion spring is in a compressed state and the first spring is in a stress-free state, the instantaneous force generated by the torsion spring can compress the first spring. After compression, it is limited again by the limiting post 5297.

[0041] In practice, the strip-shaped reinforced concrete is placed into the feed inlet 2. When it passes through the conveying component 3, it can be accelerated to achieve a higher initial velocity, which facilitates direct impact with the crushing component 52 for crushing. After that, the initially crushed reinforced concrete is kneaded and separated by the reciprocating motion of the kneading component 51, which improves the degree of separation of the reinforced concrete. The crushed and separated aggregate enters the aggregate bin 6 through the sorting plate 44, and the reinforcing bars enter the reinforcing bar bin 7 through the sorting plate 44, thus completing the recycling of the reinforced concrete.

[0042] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A green recycling and reuse system for construction waste, characterized in that, include: The bracket (1) has an inclined feed inlet (2) fixed on its upper end face. The conveying assembly (3) is installed inside the feed inlet (2); The crushing chamber (4) is fixed to the upper end face of the support (1) and is connected to the feed inlet (2); Separation component (5) is installed inside the crushing chamber (4); The aggregate bin (6) and the steel bar bin (7) are both fixed inside the bracket (1) and located below the crushing bin (4); The separation component (5) includes a kneading component (51) and a crushing component (52). One end of the kneading component (51) is hinged to the crushing chamber (4), and the other end is hinged to the output end of the cylinder. The cylinder is hinged to the outer wall of the crushing chamber (4). The crushing component (52) is installed in the crushing chamber (4), driven by a motor fixed to the outer wall of the crushing chamber (4), and located above the kneading component (51). The crushing component (52) includes: A rotating shaft (521) is rotatably disposed inside the crushing chamber (4) and is driven by the motor; Two fixed disks (522) are configured and symmetrically fixed in the crushing chamber (4) along the rotation axis (521); Multiple crushing discs (523) are configured and are fixed at equal intervals on the rotating shaft (521) and located between two of the fixed discs (522); Multiple striking columns (524) are configured and evenly distributed around the circumference of the crushing disc (523), and multiple protrusions are fixed on their outer walls. The striking elements are configured in multiple groups and are evenly distributed along the circumference of the crushing disc (523). Each group of striking elements is hinged to multiple crushing discs (523) through a connecting shaft (5251). Each group of striking elements includes multiple striking hammers (525), and the multiple striking hammers (525) are located between two crushing discs (523). The adjustment components are configured as two, respectively fixed on one side of the fixed plate (522) that are close to each other; The limiting components (529) are configured in multiples, arranged circumferentially within the adjusting components, and correspond one-to-one with the multiple striking hammers (525).

2. The green recycling and reuse system for construction waste according to claim 1, characterized in that, The conveying assembly (3) includes: The conveying column (31) is rotatably installed inside the feed inlet (2) and is connected to the output end of the motor by a synchronous belt; The conveying rods (32) are configured in multiples and are circumferentially fixed to the outer wall of the conveying column (31); The end of the conveying rod (32) away from the conveying column (31) is close to the inner wall of the feed inlet (2).

3. The green recycling and reuse system for construction waste according to claim 1, characterized in that, The crushing chamber (4) is fixed with a partition (41). The partition (41) and the kneading component (51) divide the crushing chamber (4) into a discharge chamber and a crushing separation chamber (42). The crushing component (52) is located in the crushing separation chamber (42). The lower end of the discharge chamber is fixed with a discharge port (43). The side wall of the discharge port (43) is provided with an outlet. The discharge port (43) is inclined and fixed with a sorting plate (44). The sorting plate (44) conveys steel bars to the steel bar silo (7) through the outlet.

4. A green recycling and reuse system for construction waste according to claim 3, characterized in that, The discharge hopper is also equipped with multiple air blowing heads (45), which blow air along the inclined direction of the sorting plate (44). The top of the discharge hopper is connected to a negative pressure suction pipe.

5. A green recycling and reuse system for construction waste according to claim 1, characterized in that, The kneading component (51) includes: The first hinge (511) is hinged to the side of the crushing chamber (4) near the feed inlet (2); The screening plate (512) is slidably connected to the first hinge (511) through multiple arc-shaped columns (514), and a return spring is provided between the multiple arc-shaped columns (514) and the screening plate (512); The second hinge (513) is installed on the end of the screening plate (512) away from the first hinge (511) and is hinged to the cylinder body.

6. A green recycling and reuse system for construction waste according to claim 5, characterized in that, The sieve plate (512) has multiple sieve holes and a steel bar outlet (515) is provided at a position away from the first hinge (511). Multiple protruding balls are fixed on the inner wall of the sieve plate (512).

7. A green recycling and reuse system for construction waste according to claim 1, characterized in that, The adjustment component includes: The disk body (526) is fixed on the fixed disk (522); A rotating disk (527) is rotatably mounted on the disk body (526); The adjusting plate (528) is fixed to the plate body (526) by a column, and its outer wall has two recessed adjusting ports (5281).

8. A green recycling and reuse system for construction waste according to claim 7, characterized in that, The limiting component (529) includes: An adjusting block (5291) is slidably disposed on the disc body (526), ​​and an adjusting tooth (5292) is fixed on the side of the adjusting block (525) near the striking hammer (525), the adjusting tooth (5292) meshing with the outer wall of the striking hammer (525); The fixing member (5293) is fixed to one end of the adjusting block (5291), and is slidably disposed in the rotating disk (527) by a guide post (5294), and a spring is provided between the fixing member (5293) and the rotating disk (527); The sliding block (5295) is slidably disposed within the adjusting block (5291), and reset posts (5296) are symmetrically fixed at both ends of it. The limiting post (5297) is slidably disposed in the sliding block (5295), and a pressing plate (5298) is fixed at one end of the limiting post (5297) near the adjusting plate (528). A spring is provided between the pressing plate (5298) and the sliding block (5295). The limiting plates (5299) are configured as two, L-shaped, and symmetrically fixed on the limiting posts (5297).

9. A green recycling and reuse system for construction waste according to claim 8, characterized in that, A torsion spring is sleeved on the connecting shaft (5251). The initial state of the hammer (525) is the extended state. Two limiting holes are opened on the outer wall of the hammer (525). A guide surface is opened on the limiting post (5297) and it is inserted into the limiting hole for limiting. The initial state of the spring is the compressed state.

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