Carbonization device for construction waste recycled aggregate

Abstract

The application belongs to the technical field of construction waste treatment, and discloses a carbonization device for construction waste recycled aggregate, which comprises a rack, a crushing box is arranged at the top of the rack, a crushing roller driven by a synchronous external motor is arranged in the crushing box, two turnover assemblies are arranged on the rack and located at the two sides of the crushing box, each turnover assembly comprises a pair of rotating arms and a driving mechanism, a plurality of output shafts are rotatably connected between the rotating arms, the driving mechanism is arranged on the rotating arm, the driving mechanism is used for driving the output shaft to rotate, a conveying wheel is arranged on each output shaft, a plurality of reserved grooves are arranged on the outer periphery of the conveying wheel and are distributed in the axial direction, and a plurality of positioning cones arranged in a ring shape are arranged in each reserved groove. In the application, the conveying wheel of the turnover assembly clamps the long stone plate through the positioning cone, the tip of the positioning cone is embedded in the stone plate, the positioning cones of adjacent conveying wheels are arranged in an axial staggered manner to further limit the deviation, and the problems of unstable conveying and easy falling of the long stone plate are solved.

Description

Technical Field

[0001] This invention relates to the field of construction waste treatment, and more specifically, to a carbonization device for recycled aggregates from construction waste. Background Technology

[0002] In the field of construction waste resource utilization, concrete slabs are the main type of waste. The preparation of their recycled aggregates requires processes such as crushing and carbonation. Carbonation can generate calcium carbonate by reacting carbon dioxide with calcium hydroxide in concrete, thereby improving the strength and durability of the recycled aggregates.

[0003] Traditional carbonation equipment first crushes concrete slabs during operation, then transports the crushed stones to the carbonation chamber for carbonation. However, existing carbonation equipment is only suitable for crushing smaller stones. When longer slabs are fed into the crushing chamber, they are difficult to stabilize during the crushing process, increasing the risk of the slabs falling. In addition, longer slabs are heavier, and their weight is directly borne by the crushing rollers. The crushing rollers must withstand impact loads far exceeding their design thresholds instantaneously. Under long-term operation, the crushing roller shaft system is prone to plastic deformation, and the bearing wear rate is accelerated, increasing equipment maintenance costs. At the same time, the impact load also causes fluctuations in the crushing roller speed, resulting in uneven particle size of the crushed stone, and some large pieces cannot meet the aggregate particle size requirements of the carbonation reaction.

[0004] In view of this, we propose a carbonization device for recycled aggregates from construction waste. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a carbonization device for recycled aggregates from construction waste, which can solve the problems of unstable conveying and easy falling of long stone slabs, and make the crushed stone slabs uniform in size, meeting the requirements of the carbonization reaction for aggregate particle size, thereby improving the subsequent carbonization efficiency and aggregate quality.

[0006] The present invention proposes the following technical solution: a carbonization device for recycled aggregate from construction waste, comprising a frame, a crushing box at the top of the frame, a crushing roller driven to rotate synchronously by an external motor installed inside the crushing box, and two tilting components located on both sides of the crushing box on the frame.

[0007] Each flipping assembly includes a pair of rotating arms and a drive mechanism; multiple output shafts are rotatably connected between the rotating arms, and the drive mechanism is mounted on the rotating arms. The drive mechanism is used to drive the output shafts to rotate. Each output shaft is equipped with a conveyor wheel, and the outer circumference of the conveyor wheel is provided with multiple reserved grooves distributed along the axial direction.

[0008] Each reserved slot is equipped with multiple positioning cones arranged in a ring. The distance from the tip of the positioning cone to the axis of the conveyor wheel is greater than the distance from the outer peripheral wall of the conveyor wheel to its axis. Furthermore, the positioning cones on two adjacent conveyor wheels are staggered in the axial direction.

[0009] Preferably, two sliders are fixedly connected to the inner walls of both ends of the conveyor wheel, and two limiting grooves are opened on the outer walls of both ends of the output shaft, with the sliders slidingly connected to the inner walls of the limiting grooves.

[0010] Preferably, the outer peripheral wall of the output shaft is provided with a threaded portion, and a threaded sleeve is threadedly connected to the threaded portion of the outer peripheral wall of the output shaft. The end of the threaded sleeve is rotatably connected to the conveyor wheel through a bearing.

[0011] Preferably, the outer wall of the output shaft is provided with multiple tapered protrusions along the axial direction, the positioning cone passes through the conveyor wheel and is slidably connected to it, the positioning cone extends to the outer wall inside the conveyor wheel and is fixedly connected to a limit sleeve, and the end of the positioning cone is in sliding contact with the protrusions.

[0012] Preferably, a carbonization box is fixedly connected to the inner wall of the frame, and an agitator for mixing aggregates is installed on the carbonization box. A connected air inlet is fixed on the top of the carbonization box, and the inlet of the carbonization box is connected to the outlet of the crushing box. A hydraulic gate valve is also installed at the inlet and outlet of the carbonization box to seal the inlet of the carbonization box.

[0013] Preferably, two support plates are fixedly connected to both sides of the crushing box, and the bottom of the support plates is fixedly connected to the frame.

[0014] Preferably, two support plates are fixedly connected to the outer wall of the rotating arm. The driving mechanism includes a worm, a second motor, and multiple worm wheels. The two ends of the worm pass through the support plates and are rotatably connected to them. The second motor is fixedly connected to the outer wall of the rotating arm. The output end of the second motor is fixedly connected to the worm. The multiple worm wheels are fixedly connected to the end of the output shaft. The worm meshes with the multiple worm wheels.

[0015] Preferably, a second guide rod is fixedly connected between two adjacent rotating arms, and two clamping plates are slidably connected to the outer wall of the second guide rod. A support frame is fixedly connected to the outer wall of each rotating arm, and a second hydraulic cylinder is fixedly connected to the inner wall of each support frame. The output end of the second hydraulic cylinder passes through the rotating arm and is fixedly connected to the clamping plate.

[0016] Preferably, the carbonization device for recycled aggregate from construction waste further includes two telescopic components. Each telescopic component includes two fixed plates, a mounting frame, and a first hydraulic cylinder. The fixed plates are fixedly connected to the top of the frame, and two first guide rods are fixedly connected between the two fixed plates. The first hydraulic cylinder is fixedly connected to the outer wall of the fixed plate on the side away from the carbonization box. The ends of the first guide rods pass through the mounting frame and are slidably connected thereto. The output end of the first hydraulic cylinder is fixedly connected to the mounting frame.

[0017] Preferably, a connecting plate is fixedly connected to the outer wall of the mounting frame, two support blocks are fixedly connected to the top of the connecting plate, a rotating shaft is rotatably connected between the two support blocks, a first motor is fixedly connected to the top of the connecting plate, the output end of the first motor is fixedly connected to the rotating shaft, and both ends of the rotating shaft are fixedly connected to the rotating arm respectively.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] In this invention, the conveyor wheels of the flipping assembly clamp long stone slabs with positioning cones. The tips of the positioning cones are embedded in the stone slabs to form a reliable fixation. The positioning cones of adjacent conveyor wheels are axially staggered to further limit offset, solving the problems of unstable conveying and easy falling of long stone slabs, and ensuring that the stone slabs are accurately fed into the crushing box. During the conveying process, the conveyor wheels bear part of the weight of the stone slabs, avoiding the stone slabs' own weight acting directly on the crushing rollers, reducing the instantaneous impact load on the crushing rollers, reducing plastic deformation of the crushing roller shaft system and bearing wear, extending the service life of the equipment, and reducing maintenance costs. The stable conveying process avoids the impact when the stone slabs are put into the crushing box, which causes fluctuations in the speed of the crushing rollers, ensuring that the crushing rollers are always at a stable speed, so that the crushed stone slabs have uniform particle size, meeting the requirements of the carbonization reaction for aggregate particle size, and improving the subsequent carbonization efficiency and aggregate quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the flip-up component of the present invention after it has been stored.

[0023] Figure 3 This is a schematic diagram of the carbonization box and the crushing box of the present invention;

[0024] Figure 4 This is a schematic diagram of the mounting structure of the rotating arm of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the clamping plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the mounting structure of the worm and worm wheel of the present invention;

[0027] Figure 7 This is a schematic diagram of the conveyor wheel of the present invention;

[0028] Figure 8 This is a schematic diagram of the installation structure of the positioning cone of the present invention.

[0029] The following are the labels in the diagram: 1. Frame; 2. Carbonization box; 3. Agitator; 4. Air inlet; 5. Crushing box; 6. Crushing roller; 7. Support plate; 8. Fixing plate; 9. First guide rod; 10. First hydraulic cylinder; 11. Mounting frame; 12. Connecting plate; 13. First motor; 14. Support block; 15. Rotating shaft; 16. Rotating arm; 17. Support plate; 18. Worm gear; 19. Second motor; 20. Output shaft; 21. Worm gear; 22. Conveying wheel; 23. Reserved groove; 24. Positioning cone; 25. Second guide rod; 26. Clamping plate; 27. Support frame; 28. Second hydraulic cylinder; 29. ​​Threaded part; 30. Protrusion; 31. Limiting groove; 32. Limiting sleeve; 33. Slider; 34. Threaded sleeve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Existing carbonization equipment is only suitable for crushing smaller stones. When larger stone slabs are fed into the crushing chamber, they are difficult to stabilize during the crushing process, which can easily lead to the risk of the stone slabs falling. In addition, the larger stone slabs are heavier, and their weight is directly borne by the crushing rollers. The crushing rollers must withstand impact loads far exceeding the design thresholds in an instant. Under long-term operation, the crushing roller shaft system is prone to plastic deformation, the bearing wear rate is accelerated, and the equipment maintenance cost is increased. At the same time, the impact load can also cause fluctuations in the crushing roller speed, resulting in uneven particle size of the crushed stone slabs. Some large pieces cannot meet the aggregate particle size requirements of the carbonization reaction.

[0032] Therefore, the present invention proposes a carbonization device for recycled aggregates from construction waste, which is suitable for concrete slabs without internal reinforcing bars and concrete slab structures where the reinforcing bars have been removed.

[0033] like Figures 1-7 As shown, a carbonization device for recycled aggregate from construction waste includes a frame 1, a crushing box 5 on the top of the frame 1, a crushing roller 6 driven to rotate synchronously by an external motor installed inside the crushing box 5, and two tilting components located on both sides of the crushing box 5 respectively on the frame 1.

[0034] Each flipping assembly includes a pair of rotating arms 16 and a drive mechanism; multiple output shafts 20 are rotatably connected between the rotating arms 16, and the drive mechanism is mounted on the rotating arms 16. The drive mechanism is used to drive the output shafts 20 to rotate. Each output shaft 20 is equipped with a conveyor wheel 22, and the outer periphery of the conveyor wheel 22 is provided with multiple reserved grooves 23 distributed along the axial direction.

[0035] Each reserved slot 23 is equipped with multiple positioning cones 24 arranged in a ring. The distance from the tip of the positioning cone 24 to the axis of the conveyor wheel 22 is greater than the distance from the outer peripheral wall of the conveyor wheel 22 to its axis. Furthermore, the positioning cones 24 on two adjacent conveyor wheels 22 are staggered in the axial direction.

[0036] During the process of clamping and conveying the stone slab, the conveying wheel 22 clamps the longer stone slabs with the positioning cone 24, which solves the problem of unstable conveying and easy falling of longer stone slabs in traditional devices. The axially staggered arrangement of the positioning cones further limits the deviation of the stone slabs. At the same time, the conveying wheel bears part of the weight of the stone slabs, avoiding the crushing roller 6 from being subjected to impact loads far exceeding the design threshold at any moment, reducing plastic deformation of the crushing roller shaft system and bearing wear, and reducing maintenance costs.

[0037] Concrete slabs without internal reinforcement are brittle materials, and their fracture resistance depends on the integrity of the overall structure. The holes on both sides of the positioning cone 24 create stress concentration zones at the edges of the holes. When the crushing roller 6 applies pressure to the slab, the external force is preferentially applied to the edges of these holes, making it easier for the slab to crack from the hole location. This eliminates the need for the crushing roller 6 to overcome the overall strength of the slab, reducing the force and energy required for crushing.

[0038] The holes on both sides effectively divide the stone slab into multiple short, force-bearing units along the conveying direction, rather than a complete long slab. When the crushing roller is crushing the stone, it only needs to apply force to each small unit, avoiding the problem that long stone slabs are difficult to crush due to their overall rigidity, making the crushing process more efficient and controllable.

[0039] If all the positioning cones 24 are drilled at the same axial position, two continuous channels will be formed on both sides of the stone slab. The area of ​​the stone slab between these two channels will become an extremely weak fracture zone. Even without external force, the weight of the stone slab itself or the vibration during transportation may cause it to break along the channels. However, the axially staggered arrangement means that the positioning cones 24 of adjacent conveyor wheels 22 do not coincide in the width direction of the stone slab. In this way, the holes on the stone slab will be distributed in an alternating manner, avoiding the formation of continuous weak lines, thus ensuring that the stone slab still has sufficient overall strength during transportation and preventing premature breakage.

[0040] like Figure 8As shown, two sliders 33 are fixedly connected to the inner walls of both ends of the conveyor wheel 22, and two limiting grooves 31 are opened on the outer walls of both ends of the output shaft 20. The sliders 33 are slidably connected to the inner walls of the limiting grooves 31. The sliding engagement between the sliders 33 and the limiting grooves 31 provides guidance for the movement of the conveyor wheel 22 along the output shaft 20, ensuring that it does not deviate when the spacing between the conveyor wheels is adjusted.

[0041] The outer peripheral wall of the output shaft 20 is provided with a threaded part 29, and a threaded sleeve 34 is threadedly connected to the threaded part 29 on the outer peripheral wall of the output shaft 20. The end of the threaded sleeve 34 is rotatably connected to the conveyor wheel 22 through a bearing.

[0042] The outer wall of the output shaft 20 is provided with multiple tapered protrusions 30 along the axial direction. The positioning cone 24 passes through the conveyor wheel 22 and is slidably connected to it. The positioning cone 24 extends to the outer wall inside the conveyor wheel 22 and is fixedly connected to the limiting sleeve 32. The end of the positioning cone 24 is in sliding contact with the protrusions 30.

[0043] The engagement between the threaded sleeve 34 and the threaded portion 29 of the output shaft 20 allows the positioning cone 24 to move by turning the threaded sleeve. The protrusion 30 of the output shaft 20 pushes the positioning cone 24 to extend and retract. The embedding depth of the positioning cone can be adaptively adjusted according to the hardness and thickness of the stone slab, avoiding breakage of the positioning cone due to excessively hard stone slabs or damage from excessive compression of excessively soft stone slabs. The limiting sleeve 32 restricts the extension and retraction stroke of the positioning cone to prevent the positioning cone from falling off and ensures a long-lasting clamping effect.

[0044] like Figures 1-3 As shown, a carbonization box 2 is fixedly connected to the inner wall of the frame 1. An agitator 3 for mixing aggregates is installed on the carbonization box 2. An air inlet 4 is fixedly connected to the top of the carbonization box 2. The feed inlet of the carbonization box 2 is connected to the discharge outlet of the crushing box 5. A hydraulic gate valve is also installed at the feed inlet and discharge outlet of the carbonization box 2 to seal the feed inlet of the carbonization box 2.

[0045] The agitator 3 mixes the aggregates, and the carbonization gas introduced through the air inlet 4 ensures that the aggregates are in uniform contact with the carbonization gas, thereby improving the carbonization efficiency. The hydraulic gate valve seals the carbonization box 2 to prevent carbonization gas leakage, save gas costs, and prevent external impurities from entering and affecting the carbonization quality.

[0046] like Figure 3 As shown, two support plates 7 are fixedly connected to both sides of the crushing box 5, and the bottom of the support plates 7 is fixedly connected to the frame 1.

[0047] The support plate 7 enhances the connection strength between the crushing box 5 and the frame 1, preventing the crushing box from shifting due to vibration caused by the impact of the stone slab or the rotation of the crushing roller, ensuring the stability of the crushing process and extending the service life of the crushing box.

[0048] like Figure 6As shown, two support plates 17 are fixedly connected to the outer wall of the rotating arm 16. The driving mechanism includes a worm 18, a second motor 19, and multiple worm wheels 21. The two ends of the worm 18 pass through the support plates 17 and are rotatably connected to them. The second motor 19 is fixedly connected to the outer wall of the rotating arm 16. The output end of the second motor 19 is fixedly connected to the worm 18. Multiple worm wheels 21 are fixedly connected to the end of the output shaft 20. The worm 18 meshes with the multiple worm wheels 21.

[0049] The meshing transmission between the worm gear 18 and multiple worm wheels 21 enables the synchronous rotation of multiple output shafts 20, ensuring that the conveyor wheel 22 rotates at the same speed and avoiding the stone slab shifting or jamming due to the difference in the speed of the conveyor wheel.

[0050] like Figure 5 As shown, a second guide rod 25 is fixedly connected between two adjacent rotating arms 16. Two clamping plates 26 are slidably connected to the outer wall of the second guide rod 25. A support frame 27 is fixedly connected to the outer wall of each rotating arm 16. A second hydraulic cylinder 28 is fixedly connected to the inner wall of each support frame 27. The output end of the second hydraulic cylinder 28 passes through the rotating arm 16 and is fixedly connected to the clamping plate 26.

[0051] The second hydraulic cylinder 28 pushes the clamping plate 26 to limit the stone slab from both sides, and works with the positioning cone of the conveyor wheel 22 to clamp it, forming a multi-fixed structure with clamping at the top and bottom and limiting on both sides. This is especially suitable for long stone slabs that are too wide or easily deformable, further reducing the risk of falling.

[0052] The clamp 26 slides along the second guide rod 25, and can adaptively adjust the limiting position of the stone slab according to the width of the stone slab, adapting to the conveying needs of stone slabs of different specifications and improving the compatibility of the device.

[0053] like Figure 1 , Figure 2 and Figure 4 As shown, the carbonization device for recycled aggregate from construction waste also includes two telescopic components. The telescopic components include two fixed plates 8, a mounting frame 11, and a first hydraulic cylinder 10. The fixed plates 8 are fixedly connected to the top of the frame 1. Two first guide rods 9 are fixedly connected between the two fixed plates 8. The first hydraulic cylinder 10 is fixedly connected to the outer wall of the fixed plate 8 on the side away from the carbonization box 2. The end of the first guide rod 9 passes through the mounting frame 11 and is slidably connected to it. The output end of the first hydraulic cylinder 10 is fixedly connected to the mounting frame 11.

[0054] The first hydraulic cylinder 10 drives the mounting frame 11 to slide along the first guide rod 9, thereby moving the entire flipping assembly. This allows for adjustment to accommodate stone slabs of different thicknesses. The first guide rod 9 ensures that the mounting frame 11 moves smoothly, preventing the flipping assembly from shifting and causing misalignment in the stone slab delivery.

[0055] like Figure 4As shown, a connecting plate 12 is fixedly connected to the outer wall of the mounting bracket 11. Two support blocks 14 are fixedly connected to the top of the connecting plate 12. A rotating shaft 15 is rotatably connected between the two support blocks 14. A first motor 13 is fixedly connected to the top of the connecting plate 12. The output end of the first motor 13 is fixedly connected to the rotating shaft 15. Both ends of the rotating shaft 15 are fixedly connected to the rotating arm 16 respectively.

[0056] The first motor 13 drives the rotating arm 16 to rotate via the rotating shaft 15, so that the conveying wheels 22 can all contact the outer wall of the stone slab.

[0057] The first hydraulic cylinder 10 and the first motor 13 can drive the tilting component away from the crushing box 5. This is used when crushing long stone slabs. When crushing smaller stones, the tilting component is moved away to avoid obstructing the feeding of materials into the crushing box 5.

[0058] During operation, the first motor 13 is started, which drives the rotating arm 16 to rotate through the rotating shaft 15, so that the multiple conveying wheels 22 on the rotating arm 16 are parallel to the concrete slab and fit against the surface of the slab.

[0059] Start the first hydraulic cylinder 10, push the mounting frame 11 to slide along the first guide rod 9, and drive the connecting plate 12 and the rotating arm 16 to move to the stone slab stacking position, so that the conveying wheels 22 on both sides of the stone slab clamp it, adapting to stone slabs of different thicknesses.

[0060] The second motor 19 drives the worm gear 18 to rotate, which in turn drives the output shaft 20 and the conveyor wheel 22 to rotate through meshing with the worm wheel 21, thus conveying the stone slab. The tip of the positioning cone 24 on the conveyor wheel 22 is embedded in the surface of the stone slab, which can firmly clamp the stone slab and stably lift it, preventing the weight of the stone slab from being applied to the crushing roller 6. At the same time, during the conveying process of the stone slab, the positioning cone 24 can open holes on both sides of the stone slab, which makes it easier for the crushing roller 6 to break the stone slab. The positioning cones of adjacent conveyor wheels are axially staggered, which can prevent the holes of the positioning cone 24 from being on the same path, causing the stone slab to break. At the same time, it can also prevent the stone slab from shifting or falling, thus achieving stable conveying of longer stone slabs.

[0061] By turning the threaded sleeve 34, the conveying wheel 22 is driven to slide along the limiting groove 31 of the output shaft 20. The protrusion 30 of the output shaft 20 can push the positioning cone 24 to extend and retract, adapting to the clamping requirements of stone slabs of different hardness, and avoiding excessive squeezing that could damage the stone slab or insufficient clamping force that could cause it to slip.

[0062] During the conveying process, the second hydraulic cylinder 28 pushes the clamping plate 26 to slide along the second guide rod 25, limiting the stone slab from both sides to prevent the stone slab from deviating to the side and further improving stability.

[0063] When the stone slab is conveyed to the top of the crushing box 5, it is fed into the crushing box 5, and the crushing roller 6 crushes the stone slab under the drive of an external motor. The crushed aggregate enters the carbonization box 2 through the discharge port of the crushing box. The hydraulic gate valve closes the inlet and outlet of the carbonization box to achieve a seal; carbonization gas is introduced through the air inlet 4, and the agitator 3 stirs the aggregate to ensure uniform carbonization.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbonization device for recycled aggregate from construction waste, comprising a frame (1), characterized in that: The top of the frame (1) is provided with a crushing box (5), and a crushing roller (6) driven by a synchronous external motor is installed inside the crushing box (5). The frame (1) is also equipped with two tilting components located on both sides of the crushing box (5); Each flip component includes: A pair of rotating arms (16) with multiple output shafts (20) rotatably connected between the rotating arms (16); The drive mechanism is mounted on the rotating arm (16) and is used to drive the output shaft (20) to rotate; Each output shaft (20) is equipped with a conveyor wheel (22), and the outer periphery of the conveyor wheel (22) is provided with multiple reserved grooves (23) distributed along the axial direction. Each reserved slot (23) is equipped with multiple positioning cones (24) arranged in a ring. The distance from the tip of the positioning cone (24) to the axis of the conveyor wheel (22) is greater than the distance from the outer peripheral wall of the conveyor wheel (22) to its axis. Furthermore, the positioning cones (24) on two adjacent conveyor wheels (22) are staggered in the axial direction. Two sliders (33) are fixedly connected to the inner walls of both ends of the conveying wheel (22), and two limiting grooves (31) are opened on the outer walls of both ends of the output shaft (20). The sliders (33) are slidably connected to the inner walls of the limiting grooves (31). The outer peripheral wall of the output shaft (20) is provided with a threaded part (29), and a threaded sleeve (34) is threadedly connected to the threaded part (29) on the outer wall of the output shaft (20). The end of the threaded sleeve (34) is rotatably connected to the conveyor wheel (22) through a bearing. The outer wall of the output shaft (20) is provided with a plurality of tapered protrusions (30) along the axial direction. The positioning cone (24) passes through the conveyor wheel (22) and is slidably connected to it. The positioning cone (24) extends to the outer wall inside the conveyor wheel (22) and is fixedly connected to the limiting sleeve (32). The end of the positioning cone (24) is in sliding contact with the protrusions (30).

2. The carbonization device for recycled aggregates from construction waste according to claim 1, characterized in that: The inner wall of the frame (1) is fixedly connected to a carbonization box (2). A stirrer (3) for stirring aggregate is installed on the carbonization box (2). A communicating air inlet (4) is fixed on the top of the carbonization box (2). The inlet of the carbonization box (2) is connected to the outlet of the crushing box (5). A hydraulic gate valve is also installed at the inlet and outlet of the carbonization box (2) to seal the inlet of the carbonization box (2).

3. The carbonization device for recycled aggregates from construction waste according to claim 2, characterized in that: Two support plates (7) are fixedly connected to both sides of the crushing box (5), and the bottom of the support plates (7) is fixedly connected to the frame (1).

4. The carbonization device for recycled aggregates from construction waste according to claim 3, characterized in that: The outer wall of the rotating arm (16) is fixedly connected to two support plates (17). The driving mechanism includes a worm (18), a second motor (19), and multiple worm wheels (21). The two ends of the worm (18) pass through the support plates (17) and are rotatably connected to them. The second motor (19) is fixedly connected to the outer wall of the rotating arm (16). The output end of the second motor (19) is fixedly connected to the worm (18). Multiple worm wheels (21) are fixedly connected to the end of the output shaft (20). The worm (18) meshes with the multiple worm wheels (21).

5. The carbonization device for recycled aggregates from construction waste according to claim 4, characterized in that: A second guide rod (25) is fixedly connected between two adjacent rotating arms (16). Two clamping plates (26) are slidably connected to the outer wall of the second guide rod (25). A support frame (27) is fixedly connected to the outer wall of each rotating arm (16). A second hydraulic cylinder (28) is fixedly connected to the inner wall of each support frame (27). The output end of the second hydraulic cylinder (28) passes through the rotating arm (16) and is fixedly connected to the clamping plate (26).

6. The carbonization device for recycled aggregates from construction waste according to claim 5, characterized in that: It also includes two telescopic components, each comprising two fixed plates (8), a mounting bracket (11), and a first hydraulic cylinder (10). The fixed plates (8) are fixedly connected to the top of the frame (1), and two first guide rods (9) are fixedly connected between the two fixed plates (8). The first hydraulic cylinder (10) is fixedly connected to the outer wall of the fixed plate (8) on the side away from the carbonization box (2). The end of the first guide rod (9) passes through the mounting bracket (11) and is slidably connected thereto. The output end of the first hydraulic cylinder (10) is fixedly connected to the mounting bracket (11).

7. The carbonization device for recycled aggregates from construction waste according to claim 6, characterized in that: The mounting bracket (11) has a connecting plate (12) fixedly connected to its outer wall. Two support blocks (14) are fixedly connected to the top of the connecting plate (12). A rotating shaft (15) is rotatably connected between the two support blocks (14). A first motor (13) is fixedly connected to the top of the connecting plate (12). The output end of the first motor (13) is fixedly connected to the rotating shaft (15). Both ends of the rotating shaft (15) are fixedly connected to the rotating arm (16).

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