Waste concrete reinforcement recycling device

Abstract

The utility model discloses a waste concrete reinforcing steel bar recovery device which is mainly composed of a recovery box, a smashing roller, a screening assembly, a magnetic separation assembly and a collecting assembly, a containing space is arranged in the recovery box, the smashing roller is installed in the recovery box, the screening assembly comprises a driving component and a screening frame, the screening frame is arranged in the recovery box, and the driving component makes contact with the screening frame. The concrete and the steel bars are separated by driving the screening frame to shake, the magnetic separation assembly is located below the screening assembly and comprises a reciprocating driving component and an electromagnet component, an electromagnet is arranged at the moving end of the reciprocating driving component, and the electromagnet adsorbs the screened steel bars along with movement of the reciprocating driving component, and the collecting assembly is arranged below the magnetic separation assembly. Comprising a conveying belt for conveying reinforcing steel bars and a receiving box for containing waste concrete blocks, the conveying belt and the receiving box are used for collecting and transporting the separated reinforcing steel bars and the separated concrete blocks correspondingly, and effective separation and recovery of the waste concrete and the reinforcing steel bars are achieved through cooperative work of a screening assembly, a magnetic separation assembly and a collecting assembly.

Description

Technical Field

[0001] This utility model relates to the field of steel bar recycling, specifically to a device for recycling waste concrete steel bars. Background Technology

[0002] When demolishing buildings, the destruction of the original structures leaves behind a large amount of waste concrete, which contains a significant amount of residual steel reinforcement. By recycling this waste steel reinforcement, the demand for mining natural resources such as iron ore can be significantly reduced, thereby protecting the Earth's limited mineral resources, maintaining ecological balance, saving a lot of energy, and reducing environmental pollution during energy production. Recycling and reprocessing waste steel reinforcement can not only save raw material costs for enterprises but also create a circular economy and promote sustainable social and economic development.

[0003] In existing technologies, the main method for recycling concrete reinforcing bars is to first use a crusher to break the concrete blocks into smaller fragments, then use screening equipment to separate fragments of different sizes, and finally use a magnetic separator to adsorb the reinforcing bars from the concrete fragments and transfer them to the corresponding collection boxes. However, during use, it was found that some reinforcing bars were piled up in the middle of the concrete blocks, which prevented the magnetic separator from accurately adsorbing the waste reinforcing bars, resulting in some reinforcing bars in the waste concrete not being successfully recycled. At the same time, since the concrete blocks and reinforcing bars need to be placed in different collection boxes, the magnetic separator needs to move back and forth, which reduces the overall recycling efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a waste concrete steel bar recycling device, thereby solving the aforementioned technical problems.

[0005] This utility model provides a waste concrete steel bar recycling device, including a recycling bin with internal storage space and a crushing roller disposed inside the recycling bin, and further comprising:

[0006] The screening assembly is located inside the recycling bin and below the crushing roller. The screening assembly includes a driving component and a screening frame. The screening frame is located inside the recycling bin, and the driving component is located on the recycling bin and abuts against the bottom of the screening frame. Under the drive of the driving component, the crushed concrete and steel bars are shaken through the screening frame.

[0007] A magnetic separation component is set inside the recycling bin and below the screening component. The magnetic separation component includes a reciprocating drive component and an electromagnet component. The reciprocating drive component is set inside the recycling bin, and the electromagnet component is set on the moving end of the reciprocating drive component. Under the drive of the reciprocating drive component, the electromagnet attracts the shaken-off steel bars.

[0008] A collection component is located inside the recycling bin and below the magnetic separation component. The collection component includes a conveyor belt for conveying steel bars and a receiving box for receiving waste concrete blocks. Both the conveyor belt and the receiving box are located on the bottom surface of the recycling bin.

[0009] Preferably, the driving component includes a first motor, which is fixedly installed on the side wall of the recycling bin. An eccentric shaft is fixedly connected to the output end of the first motor. The eccentric shaft passes through the side wall of the recycling bin and is rotatably connected to the recycling bin. A slide rail is fixedly installed on the inner wall of the recycling bin. A slider is slidably connected in the slide rail. A screening frame is fixedly connected to the slider. An inclined guide slope is fixedly installed in the screening frame.

[0010] Preferably, the reciprocating drive component includes a second motor, which is fixedly installed on the side wall of the recycling bin. A reciprocating lead screw is fixedly connected to the output end of the second motor. The reciprocating lead screw passes through two opposite side walls of the recycling bin and is rotatably connected to the recycling bin. A movable column is threaded on the outer side of the reciprocating lead screw. The length of the movable column is less than the length of the reciprocating lead screw. A fixed rod is fixedly connected between two opposite side walls inside the recycling bin. The fixed rod is located below the reciprocating lead screw. A movable block is slidably connected to the fixed rod. The movable block is fixedly connected to the movable column.

[0011] Preferably, a rotating shaft is rotatably connected to the side wall of the recycling bin, the rotating shaft is located above the moving column, a rotating disk is fixedly installed on the outside of the rotating shaft, a connecting rod is hinged to the surface of the rotating disk away from the center, a slide rail is fixedly installed on the side wall of the recycling bin, a sliding column is slidably connected inside the slide rail, one end of the sliding column is hinged to the connecting rod, and a push rod is fixedly installed at the other end of the sliding column.

[0012] Preferably, a first pulley and a second pulley are fixedly installed on the reciprocating screw and the rotating shaft, respectively. Both the first pulley and the second pulley are located outside the recycling box, and the first pulley and the second pulley are connected by belt drive.

[0013] Preferably, the electromagnet component includes several arrays of equidistantly distributed electromagnet blocks, which are fixedly installed on the moving column. The recycling box is provided with a magnetic zone and a non-magnetic zone. The electromagnet blocks are arranged from left to right along the length of the reciprocating screw as the non-magnetic zone, magnetic zone, and non-magnetic zone.

[0014] Preferably, there are two conveyor belts symmetrically distributed around the center of the recycling bin, and the two conveyor belts are arranged in a figure-eight shape, with the receiving bin located between the two conveyor belts.

[0015] Compared with existing technologies, it has the following beneficial effects:

[0016] This invention provides a waste concrete and rebar recycling device. A crushing roller breaks down the concrete and rebar, which then fall into a screening assembly. The up-and-down vibration of the screening assembly causes the concrete and rebar to fall off continuously, preventing them from falling in a concentrated manner and affecting the magnetic separation effect. An electromagnet continuously attracts the falling rebar, and a reciprocating drive further transfers the rebar from the electromagnet onto a conveyor belt, removing it from the recycling bin. This allows for continuous and uninterrupted collection of rebar. Concrete blocks, after passing through the electromagnet, fall directly into the corresponding receiving box at the bottom of the recycling bin, completing the collection of the concrete blocks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a waste concrete steel bar recycling device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the screening component of a waste concrete steel bar recycling device according to the present invention;

[0020] Figure 3 This is a schematic diagram of the magnetic separation component of a waste concrete steel bar recycling device according to the present invention;

[0021] Figure 4 This is a schematic diagram showing the connection relationship between the rotating shaft and the push rod of a waste concrete steel bar recycling device according to this utility model;

[0022] Figure 5 This is a schematic diagram of the belt and pulley drive of a waste concrete steel bar recycling device according to this utility model;

[0023] In the diagram, 1. Recycling bin; 2. Crushing roller; 3. Screening assembly; 31. Driving component; 32. Screening frame; 311. First motor; 312. Eccentric shaft; 313. Slide rail; 314. Slider; 4. Magnetic separation assembly; 41. Reciprocating drive component; 42. Electromagnet component; 411. Second motor; 412. Reciprocating lead screw; 413. Moving column; 414. Fixed rod; 415. Moving block; 421. Electromagnet block; 422. Magnetic zone; 423. Non-magnetic zone; 5. Collection assembly; 51. Conveyor belt; 52. Receiving box; 6. Rotating shaft; 7. Rotary disk; 8. Connecting rod; 9. Slide rail; 10. Slide column; 11. Push rod; 12. First pulley; 13. Second pulley; 14. Belt. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0025] Example 1:

[0026] like Figures 1 to 5 As shown, this utility model provides a waste concrete steel bar recycling device, including a recycling bin 1 with internal storage space and a crushing roller 2 disposed inside the recycling bin 1, and further including:

[0027] Screening component 3 is set inside the recycling bin 1 and located below the crushing roller 2. Screening component 3 includes a driving component 31 and a screening frame 32. The screening frame 32 is set inside the recycling bin 1. The driving component 31 is set on the recycling bin 1 and abuts against the bottom of the screening frame 32. Under the drive of the driving component 31, the crushed concrete and steel bars are shaken through the screening frame 32.

[0028] Magnetic separation component 4 is disposed in the recycling bin 1 and located below the screening component 3. The magnetic separation component 4 includes a reciprocating drive component 41 and an electromagnet component 42. The reciprocating drive component 41 is disposed in the recycling bin 1, and the electromagnet component 42 is disposed on the moving end of the reciprocating drive component 41. Under the drive of the reciprocating drive component 41, the electromagnet attracts the shaken steel bars.

[0029] Collection component 5 is located inside recycling bin 1 and below magnetic separation component 4. Collection component 5 includes a conveyor belt 51 for conveying steel bars and a receiving box 52 for receiving waste concrete blocks. Both the conveyor belt 51 and the receiving box 52 are located on the bottom surface of recycling bin 1.

[0030] This invention provides a waste concrete and steel reinforcement recycling device. First, the crushing roller 2 of this device crushes the concrete and steel reinforcement falling into the device. The crushed concrete and steel reinforcement fall into the screening component 3. The screening component 3 separates the crushed concrete and steel reinforcement, which then fall onto the magnetic separation component 4. The magnetic separation component 4 can better attract the steel reinforcement falling from the screening component 3. The interaction between the magnetic zone 422 and the non-magnetic zone 423 on the magnetic separation component 4 completely separates the steel reinforcement from the concrete. The separated steel reinforcement is conveyed out of the recycling box 1 by the conveyor belt 51, and the separated concrete falls into the receiving box 52 below. This device can complete the crushing, screening, and classification collection of concrete and steel reinforcement in the same device. It is easier to operate and can quickly and easily collect concrete and steel reinforcement.

[0031] Example 2:

[0032] like Figures 1 to 5 As shown, in conjunction with the technical solution of Embodiment 1, in this solution, the driving component 31 includes a first motor 311, which is fixedly installed on the side wall of the recycling bin 1. An eccentric shaft 312 is fixedly connected to the output end of the first motor 311. The eccentric shaft 312 passes through the side wall of the recycling bin 1 and is rotatably connected to the recycling bin 1. A slide rail 313 is fixedly installed on the inner wall of the recycling bin 1. A slider 314 is slidably connected in the slide rail 313. The screening frame 32 is fixedly connected to the slider 314. An inclined guide slope is fixedly installed in the screening frame 32. When the first motor 311 is started, it drives the eccentric shaft 312 to rotate. During the rotation, the eccentric shaft 312 will continuously rise and fall, thereby continuously resisting the up-and-down vibration of the screening frame 32. During the continuous up-and-down vibration, the steel bars and concrete fragments falling into the screening frame 32 will be shaken off along the guide slope in the screening frame 32, thereby achieving the effect of screening the steel bars and concrete and preventing the steel bars and concrete from falling together.

[0033] Furthermore, the reciprocating drive component 41 includes a second motor 411, which is fixedly installed on the side wall of the recycling bin 1. A reciprocating lead screw 412 is fixedly connected to the output end of the second motor 411. The reciprocating lead screw 412 passes through two opposite side walls of the recycling bin 1 and is rotatably connected to the recycling bin 1. A moving post 413 is threaded on the reciprocating lead screw 412. The length of the moving post 413 is less than the length of the reciprocating lead screw 412. A fixed rod 414 is fixedly connected between two opposite side walls inside the recycling bin 1. The fixed rod 414 is located below the reciprocating lead screw 412. A moving block 415 is slidably connected to the fixed rod 414. The moving block 415 is fixedly connected to the moving post 413. The second motor 411 is started, which drives the reciprocating screw 412 to rotate. Since the length of the moving column 413 on the reciprocating screw 412 is shorter than that of the reciprocating screw 412, the moving column 413 will reciprocate along the length direction of the reciprocating screw 412. In order to prevent the moving column 413 from rotating with the reciprocating screw 412, a fixed rod 414 is added inside the recycling box 1. By installing a moving block 415 on the fixed rod 414 and connecting the moving block 415 to the moving column 413, the moving column 413 is driven to move only along the length direction of the fixed rod 414. This avoids the moving column 413 from rotating with the reciprocating screw 412 and realizes the reciprocating motion of the moving column 413 on the reciprocating screw 412.

[0034] Furthermore, a rotating shaft 6 is rotatably connected to the side wall of the recycling bin 1. The rotating shaft 6 is located above the moving column 413. A rotating disk 7 is fixedly installed on the outer side of the rotating shaft 6. A connecting rod 8 is hinged to the surface of the rotating disk 7 away from the center. A slide rail 9 is fixedly installed on the side wall of the recycling bin 1. A sliding column 10 is slidably connected inside the slide rail 9. One end of the sliding column 10 is hinged to the connecting rod 8, and a push rod 11 is fixedly installed at the other end of the sliding column 10. In order to collect the steel bars located above the electromagnet component 62, the rotating disk 7 inside the recycling bin 1 drives the connecting rod 8 to continuously reciprocate. The other end of the connecting rod 8 is hinged to the sliding column 10, which is limited within the slide rail 9. Therefore, the connecting rod 8 continuously pushes the sliding column 10 to reciprocate along the slide rail 9, thereby driving the push rod 11 to repeatedly push within the recycling bin 1, which can better push down the falling steel bars.

[0035] Furthermore, a first pulley 12 and a second pulley 13 are fixedly mounted on the reciprocating screw 412 and the rotating shaft 6, respectively. Both the first pulley 12 and the second pulley 13 are located outside the recycling box 1, and are connected by a belt 14. When the second motor 411 drives the reciprocating screw 412 to rotate, the first pulley 12 on the reciprocating screw 412 also rotates. Since the second pulley 13 is mounted on the rotating shaft 6, and the first pulley 12 and the second pulley 13 are connected by the belt 14, the second motor 411 drives the rotating shaft to rotate.

[0036] Furthermore, the electromagnet component 42 includes several arrays of equidistantly distributed electromagnet blocks 421, which are fixedly installed on the moving column 413. The recycling box 1 is provided with a magnetic zone and a non-magnetic zone. The electromagnet blocks 421 are arranged from left to right along the length direction of the reciprocating screw 412 as the non-magnetic zone 423, the magnetic zone 422, and the non-magnetic zone 423. Ten electromagnet blocks 421 are evenly installed on the moving column 413. When the moving column 413 moves on the reciprocating screw 412, the moving column 413 carries the left five of the ten electromagnet blocks 421 into the non-magnetic zone 423 on the left side of the recycling box 1. These five electromagnet blocks 421 lose their magnetism, and the steel bars attracted to them fall due to the loss of magnetism. At the same time, the other five of the ten electromagnet blocks 421 are in the magnetic zone 422, so they still have an attraction effect on the falling steel bars. When the moving column 413 carries these ten... When the five electromagnet blocks 421 on the right move to the non-magnetic zone 423 on the right, these five electromagnet blocks 421 lose their magnetism, and the steel bars attracted to them fall down due to the loss of magnetism. At the same time, the other five electromagnet blocks 421 are in the magnetic zone 422 and still have an attraction effect on the falling steel bars. Therefore, no matter how these ten electromagnet blocks 421 move in the recycling box 1, the electromagnet blocks 421 that enter the magnetic zone 422 always maintain their magnetism. The attraction and collection of steel bars are achieved in the above way.

[0037] Furthermore, there are two conveyor belts 51, symmetrically distributed around the center of the recycling bin 1. The two conveyor belts 51 are arranged in a "figure-eight" shape, with the receiving box 52 located between the two conveyor belts 51. The receiving box 52 is located at the bottom center of the recycling bin 1 to better receive concrete blocks, while the "figure-eight" conveyor belts 51 on both sides are designed to better receive and promptly transport any steel bars falling from the electromagnet block 421 to the outside of the recycling bin.

[0038] The working principle of a waste concrete steel bar recycling device described in this application is as follows:

[0039] The concrete reinforcing bars are placed into the recycling bin 1. First, they pass through the crushing roller 2 to separate the reinforcing bars from the concrete. The separated reinforcing bars and concrete fall into the screening assembly 3. The first motor 311 in the screening assembly 3 drives the eccentric shaft 312 to rotate. During rotation, the eccentric shaft 312 continuously rises and falls, thus constantly resisting the up-and-down vibration of the screening frame 32. During this continuous up-and-down vibration, the reinforcing bars and concrete fragments falling into the screening frame 32 are successively shaken off along the guide slope within the screening frame 32 onto the magnetic separation assembly 4. The fallen reinforcing bars fall onto the electromagnet block 421 in the magnetic zone 422, and then are further separated by a moving... The column 413 drives the electromagnet block 421 from the magnetic zone 422 into the non-magnetic zone 423. Once in the non-magnetic zone 423, the electromagnet block 421 loses its magnetism, and the steel bars adsorbed on the electromagnet block 421 fall onto the conveyor belt 51, which then transports it out of the recycling box 1. To prevent the steel bars on the electromagnet block 421 from falling incompletely, the rotating shaft 6 driven by the second motor 411 drives the push rod 11 inside the recycling box 1 to push back and forth against the upper surface of the electromagnet block 421, preventing the steel bars from accumulating on the electromagnet block 421. Concrete fragments fall directly as they pass the electromagnet block 421 and are collected in the receiving box 52 below.

[0040] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A waste concrete rebar recycling device, comprising a recycling bin (1) with internal accommodating space and a crushing roller (2) disposed within the recycling bin (1), characterized in that, Also includes: Screening assembly (3), the screening assembly (3) is disposed in the recycling bin (1) and located below the crushing roller (2), the screening assembly (3) includes a driving component (31) and a screening frame (32), the screening frame (32) is disposed in the recycling bin (1), the driving component (31) is disposed on the recycling bin (1) and abuts against the bottom of the screening frame (32), wherein the crushed concrete and steel bars are shaken by the driving component (31) through the screening frame (32); A magnetic separation component (4) is disposed in the recycling bin (1) and located below the screening component (3). The magnetic separation component (4) includes a reciprocating drive component (41) and an electromagnet component (42). The reciprocating drive component (41) is disposed in the recycling bin (1), and the electromagnet component (42) is disposed on the moving end of the reciprocating drive component (41). Under the drive of the reciprocating drive component (41), the electromagnet attracts the shaken steel bars. A collection component (5) is disposed inside the recycling bin (1) and located below the magnetic separation component (4). The collection component (5) includes a conveyor belt (51) for conveying steel bars and a receiving box (52) for receiving waste concrete blocks. Both the conveyor belt (51) and the receiving box (52) are disposed on the bottom surface of the recycling bin (1).

2. The waste concrete steel reinforcement recycling device according to claim 1, characterized in that, The driving component (31) includes a first motor (311), which is fixedly installed on the side wall of the recycling bin (1). An eccentric shaft (312) is fixedly connected to the output end of the first motor (311). The eccentric shaft (312) passes through the side wall of the recycling bin (1) and is rotatably connected to the recycling bin (1). A slide rail (313) is fixedly installed on the inner wall of the recycling bin (1). A slider (314) is slidably connected in the slide rail (313). The screening frame (32) is fixedly connected to the slider (314). An inclined guide slope is fixedly installed in the screening frame (32).

3. The waste concrete steel reinforcement recycling device according to claim 2, characterized in that, The reciprocating drive component (41) includes a second motor (411), which is fixedly installed on the side wall of the recycling bin (1). A reciprocating lead screw (412) is fixedly connected to the output end of the second motor (411). The reciprocating lead screw (412) passes through two opposite side walls of the recycling bin (1) and is rotatably connected to the recycling bin (1). A moving column (413) is threaded on the outer side of the reciprocating lead screw (412). The length of the moving column (413) is less than the length of the reciprocating lead screw (412). A fixed rod (414) is fixedly connected between two opposite side walls inside the recycling bin (1). The fixed rod (414) is located below the reciprocating lead screw (412). A moving block (415) is slidably connected to the fixed rod (414). The moving block (415) is fixedly connected to the moving column (413).

4. The waste concrete steel reinforcement recycling device according to claim 3, characterized in that, A rotating shaft (6) is rotatably connected to the side wall of the recycling bin (1). The rotating shaft (6) is located above the moving column (413). A rotating disk (7) is fixedly installed on the outside of the rotating shaft (6). A connecting rod (8) is hinged to the surface of the rotating disk (7) away from the center. A slide rail (9) is fixedly installed on the side wall of the recycling bin (1). A sliding column (10) is slidably connected inside the slide rail (9). One end of the sliding column (10) is hinged to the connecting rod (8). A push rod (11) is fixedly installed at the other end of the sliding column (10).

5. A waste concrete steel reinforcement recycling device according to claim 4, characterized in that, The reciprocating screw (412) and the rotating shaft (6) are respectively fixedly mounted with a first pulley (12) and a second pulley (13). The first pulley (12) and the second pulley (13) are both located outside the recycling box (1). The first pulley (12) and the second pulley (13) are connected by a belt (14).

6. The waste concrete steel reinforcement recycling device according to claim 3, characterized in that, The electromagnet component (42) includes a plurality of electromagnet blocks (421) distributed in an array at equal intervals. The plurality of electromagnet blocks (421) are fixedly installed on the moving column (413). The recycling box (1) is provided with a magnetic zone (422) and a non-magnetic zone (423). The electromagnet blocks (421) are arranged from left to right along the length direction of the reciprocating screw (412) as the non-magnetic zone (423), the magnetic zone (422), and the non-magnetic zone (423).

7. The waste concrete steel reinforcement recycling device according to claim 1, characterized in that, The number of conveyor belts (51) is two and they are symmetrically distributed around the center of the recycling bin (1). The two conveyor belts (51) are arranged in a figure-eight shape, and the receiving bin (52) is located between the two conveyor belts (51).

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