A waste concrete recycling device

Abstract

The utility model discloses a kind of waste concrete recycling devices, including crushing pedestal, the crushing shell of being installed in the top of crushing pedestal, two groups of crushing roller bodies being rotationally connected in the crushing shell and the driving motor for driving crushing roller bodies rotation, further include: buffer hopper, the buffer hopper is set in the position of being directly above the inlet of crushing shell, and the bottom narrow section of the buffer hopper is directly opposite the middle position of two groups of crushing roller bodies in crushing shell;Damping kit, the damping kit is installed in the top outer periphery position of crushing shell, the bottom of the damping kit is open and its inside limit sliding connection has damping plate;The energy generated by concrete block collision can be consumed, avoid the damage of two crushing roller bodies caused by concrete block impact, cause the shaft body fracture of crushing roller body, significantly improve the service life of the recycling device.

Description

Technical Field

[0001] This utility model relates to the field of concrete recycling technology, and in particular to a waste concrete recycling device. Background Technology

[0002] Against the backdrop of rapid development in the construction industry, the large volumetric concrete waste generated from construction projects, if not effectively treated, will not only occupy a significant amount of land resources but also pollute soil and water resources due to the leakage of harmful substances from the concrete. The recycling of volumetric concrete can achieve resource recycling, reduce the mining of natural sand and gravel and other mineral resources, reduce damage to the ecological environment, and align with the current strategic goals of carbon neutrality and sustainable development. It has significant practical and far-reaching strategic importance in saving resources and protecting the environment. In the process of recycling volumetric concrete, the crushing process is a crucial step, mainly achieved using a roller crusher. This equipment, with its simple structure, high crushing efficiency, and ability to process concrete fragments of varying hardness, has been widely used in the field of concrete recycling. However, in actual use, the core component of a roller crusher, the grinding roller, needs to directly withstand the impact generated when concrete fragments fall into it. Because concrete fragments often have high hardness and irregular shapes, and accumulate kinetic energy during their fall, when these fragments directly impact the surface of the grinding roller, they create an instantaneous impact force. This impact force not only causes wear on the surface of the grinding roller but is also transmitted through the roller body to components such as the bearings and frame of the equipment, affecting the stable operation of the entire machine. Based on the above considerations, those skilled in the art have proposed a waste concrete recycling device. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste concrete recycling device. This waste concrete recycling device uses a buffer bucket to press a damping plate that slides along the inner wall of the damping kit. By using damping to dissipate energy during the flow process, the energy generated by the collision of concrete fragments can be consumed, thus avoiding damage to the two crushing rollers caused by the impact of concrete fragments and preventing the shaft of the crushing rollers from breaking. This significantly improves the service life of the recycling device.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A waste concrete recycling device includes a crushing base, a crushing shell mounted on top of the crushing base, two sets of crushing rollers rotatably connected inside the crushing shell, and a drive motor for driving the crushing rollers to rotate. It also includes: The buffer hopper is positioned directly above the feed inlet of the crushing shell, and the narrowed section at the bottom of the buffer hopper is positioned directly opposite the middle of the two sets of crushing rollers inside the crushing shell. A damping kit is installed on the top outer periphery of the crushing shell, and the bottom of the damping kit is open and a damping plate is slidably connected inside it. The top of the crushing shell is provided with several guide holes, which are interconnected with the interior of the damping kit. A spring is fixedly connected to the outside of each guide hole, and a pressure rod is fixedly connected to the top of the spring. Several pressure rods are fixed to the bottom of the buffer hopper. An outer sleeve is fixedly connected to the top of the crushing shell and to the outside of the several guide holes. Several pressure rods are slidably connected to the inner wall of the outer sleeve.

[0005] Preferably, the outer sleeve and the damping kit are provided with a damping medium with a high viscosity coefficient.

[0006] Preferably, the drive motor has a transmission mechanism connected to its movable end, and the other end of the transmission mechanism is connected to the shaft of one of the crushing rollers.

[0007] Preferably, the outer wall of the damping kit is fixedly connected to an external fixing member, the top of the external fixing member is fixedly connected to a guide bucket, and the top of the guide bucket is fixedly provided with an inclined plate for receiving materials.

[0008] Preferably, the guide bucket is rotatably connected to both sides with sealing plates.

[0009] Preferably, drive gears are fixedly connected to both ends of the rotating shaft of the sealing plate, and drive racks that mesh with the drive gears are fixedly connected to the four corners of the top of the buffer hopper.

[0010] This utility model has the following beneficial effects: 1. In this utility model, the buffer hopper of the concrete recycling device is pressed by the concrete fragments during the process of concrete fragments falling in, which causes the pressure rod to press the medium inside the outer sleeve, thereby pressing the damping plate to slide along the inner wall of the damping kit. The energy generated by the collision of concrete fragments can be consumed by the energy dissipation method of damping during the flow process, avoiding damage to the two crushing rollers caused by the impact of concrete fragments and the breakage of the shaft of the crushing rollers, which significantly improves the service life of the recycling device.

[0011] 2. In this utility model, when the buffer hopper is pressed down by the concrete, the drive rack drives the drive gear to rotate, which in turn drives the sealing plate to rotate and flip the sealing plate. The sealing plate can isolate the entire feed port during concrete crushing, thus preventing the sand and dust generated during the crushing of concrete fragments from spreading. Attached Figure Description

[0012] Figure 1 This is a perspective view of a waste concrete recycling device proposed in this utility model; Figure 2 This is a schematic diagram of the hidden external fixing component in a waste concrete recycling device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of a waste concrete recycling device with the external fixing component and a single outer sleeve hidden in it. Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the bottom structure of a waste concrete recycling device proposed in this utility model.

[0013] Legend: 1. Crushing base; 2. Drive motor; 3. Transmission mechanism; 4. Crushing shell; 5. Crushing roller; 6. External fixing component; 7. Guide hopper; 8. Buffer hopper; 9. Damping kit; 10. Drive rack; 11. Drive gear; 12. Sealing plate; 13. Guide hole; 14. Spring; 15. Pressure rod; 16. Outer sleeve; 17. Damping plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Reference Figure 1 as well as Figures 4-6This utility model provides an embodiment of a waste concrete recycling device, comprising a crushing base 1, a crushing shell 4 installed on top of the crushing base 1, two sets of crushing rollers 5 rotatably connected inside the crushing shell 4, and a drive motor 2 for driving the crushing rollers 5 to rotate. It also includes: a buffer hopper 8, positioned directly above the feed inlet of the crushing shell 4, with the bottom narrowing section of the buffer hopper 8 facing the middle of the two sets of crushing rollers 5 inside the crushing shell 4; a damping kit 9, installed on the top outer periphery of the crushing shell 4, with an open bottom and a damping plate 17 slidably connected inside; several guide holes 13 are provided on the top of the crushing shell 4, communicating with the interior of the damping kit 9; a spring 14 is fixedly connected to the outside of each guide hole 13, and a pressure rod 15 is fixedly connected to the top of each spring 14; several pressure rods 15 are fixed to the bottom of the buffer hopper 8, and on the top of the crushing shell 4... An outer sleeve 16 is fixedly connected to the outside of several guide holes 13, while several pressure rods 15 are slidably connected to the inner wall of the outer sleeve 16. The outer sleeve 16 and the damping kit 9 ​​are filled with a damping medium with a high viscosity coefficient. The concrete recycling device is equipped with a buffer hopper 8 to guide concrete fragments. The buffer hopper 8, through its funnel shape, can directly guide the concrete fragments between the two crushing rollers 5, thereby directly crushing the concrete fragments falling into the crushing shell 4. Some larger concrete fragments will press the buffer hopper 8 downward during the falling process, causing the pressure rods 15 to press the medium in the outer sleeve 16, and then press the damping plate 17 to slide along the inner wall of the damping kit 9. The energy generated by the collision of concrete fragments can be consumed by the energy dissipation method of damping during the flow, avoiding damage to the two crushing rollers 5 caused by the impact of concrete fragments, which could lead to the breakage of the shaft of the crushing rollers 5, and significantly improving the service life of the recycling device.

[0016] Reference Figure 1 and Figure 2 A transmission mechanism 3 is connected to the movable end of the drive motor 2, and the other end of the transmission mechanism 3 is connected to the shaft of one of the crushing rollers 5. The transmission mechanism 3 can be a belt pair, with one end of the belt pair fixedly connected to the movable end of the drive motor 2 and the other end fixedly connected to one of the crushing rollers 5. When the movable end of the drive motor 2 rotates, it drives one of the crushing rollers 5 to rotate through the belt pair. When one of the crushing rollers 5 rotates, the gear mechanism of the two crushing rollers 5 enables the two crushing rollers 5 to rotate synchronously in opposite directions, thereby fully crushing the concrete fragments falling into the two crushing rollers 5.

[0017] Reference Figures 2-3An external fixing member 6 is fixedly connected to the outer wall of the damping kit 9. A guide hopper 7 is fixedly connected to the top of the external fixing member 6. An inclined plate for receiving material is fixedly opened on the top of the guide hopper 7. The guide hopper 7 can receive concrete fragments conveyed by the conveyor belt and guide the concrete fragments to the buffer hopper 8. A sealing plate 12 is rotatably connected to both sides of the guide hopper 7. The sealing plate 12 can isolate the entire feed port during concrete crushing, avoiding the dust generated during the crushing of concrete fragments. A drive gear 11 is fixedly connected to both ends of the rotating shaft of the sealing plate 12, and a drive rack 10 that meshes with the drive gear 11 is fixedly connected to the four corners of the top of the buffer hopper 8. When the buffer hopper 8 is pressed down by concrete, the drive rack 10 drives the drive gear 11 to rotate, which in turn drives the sealing plate 12 to rotate, thus flipping the sealing plate 12. This allows the sealing plate 12 to automatically flip when the buffer hopper 8 is pressed by concrete fragments. When the sealing plate 12 is reset by the spring 14, it rotates in the opposite direction, causing the feed port to reopen.

[0018] Working principle: This concrete recycling device is equipped with a buffer hopper 8 to guide concrete fragments. The buffer hopper 8, with its funnel shape, guides the concrete fragments directly between the two crushing rollers 5, thus directly crushing the concrete fragments falling into the crushing outer shell 4. Larger concrete fragments, during their fall, press down on the buffer hopper 8, causing the pressure rod 15 to press against the medium inside the outer sleeve 16, which in turn presses the damping plate 17 to slide along the inner wall of the damping kit 9. This damping dissipates the energy generated by the collision of concrete fragments during the flow process, preventing the concrete fragments from colliding and causing further damage. Damage to the crushing roller 5 caused the shaft of the crushing roller 5 to break, which significantly improved the service life of the recycling device. When the buffer hopper 8 is pressed down by concrete, the drive rack 10 drives the drive gear 11 to rotate, which in turn drives the sealing plate 12 to rotate and flip the sealing plate 12. This allows the sealing plate 12 to automatically flip when the buffer hopper 8 is pressed by concrete fragments. The sealing plate 12 can isolate the entire feed port during concrete crushing, preventing the dust generated by the concrete fragments from spreading. When the sealing plate 12 is reset by the spring 14 in the buffer hopper 8, the sealing plate 12 rotates in the opposite direction, causing the feed port to reopen.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste concrete recycling device, comprising a crushing base (1), a crushing shell (4) mounted on top of the crushing base (1), two sets of crushing rollers (5) rotatably connected within the crushing shell (4), and a drive motor (2) for driving the crushing rollers (5) to rotate, characterized in that: Also includes: The buffer hopper (8) is located directly above the feed inlet of the crushing shell (4), and the bottom narrowing section of the buffer hopper (8) is directly opposite the middle position of the two sets of crushing rollers (5) inside the crushing shell (4). Damping kit (9) is installed on the top outer periphery of the crushing shell (4), and the bottom of the damping kit (9) is open and the damping plate (17) is slidably connected inside it. The top of the crushing shell (4) is provided with several guide holes (13), which are connected to the interior of the damping kit (9). A spring (14) is fixedly connected to the outside of each guide hole (13), and a pressure rod (15) is fixedly connected to the top of the spring (14). Several pressure rods (15) are fixed to the bottom of the buffer hopper (8). An outer sleeve (16) is fixedly connected to the top of the crushing shell (4) and to the outside of the several guide holes (13). Several pressure rods (15) are limited and slidably connected to the inner wall of the outer sleeve (16).

2. The waste concrete recycling device according to claim 1, characterized in that: The outer sleeve (16) and the damping kit (9) are provided with a damping medium with a high viscosity coefficient.

3. The waste concrete recycling device according to claim 1, characterized in that: The drive motor (2) is connected to a transmission mechanism (3) at its movable end, and the other end of the transmission mechanism (3) is connected to the shaft of one of the crushing rollers (5).

4. The waste concrete recycling device according to claim 1, characterized in that: The outer wall of the damping kit (9) is fixedly connected to an external fastener (6), and the top of the external fastener (6) is fixedly connected to a guide bucket (7). The top of the guide bucket (7) is fixedly provided with an inclined plate for receiving materials.

5. The waste concrete recycling device according to claim 4, characterized in that: The guide bucket (7) is rotatably connected to the two sides of the sealing plate (12).

6. The waste concrete recycling device according to claim 5, characterized in that: The two ends of the rotating shaft of the sealing plate (12) are fixedly connected to the drive gear (11), and the four corners of the top of the buffer bucket (8) are fixedly connected to the drive rack (10) that meshes with the drive gear (11).

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