A recycled concrete waste recycling device

Abstract

The utility model relates to a kind of recycled concrete waste recovery device, belong to concrete production technical field.The utility model passes through the thread cooperation structure of lead screw and support rod, just need to rotate inner hexagon nut to drive support rod to move along installation disc radial direction, to adjust the spacing of broken tooth between two rollers synchronously, break the limitation of traditional fixed broken tooth, without replacing broken roller, it can quickly adapt to different particle size requirements such as large particle road base aggregate or small particle recycled block aggregate, significantly improve the versatility of equipment, through the rectangular recess engagement of positioning disc and support rod to form torsional constraint, cooperate detachable broken tooth installation mode, can replace worn broken tooth specifically, avoid the material waste caused by traditional overall broken roller replacement, reduce maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of concrete production technology, and specifically relates to a device for recycling recycled concrete waste. Background Technology

[0002] In the process of building demolition and construction, the recycling of waste concrete has become a key measure to alleviate resource shortages and reduce environmental pollution. Currently, the recycling of waste concrete mainly employs processes such as crushing, screening, and washing. Aggregates formed from crushed recycled concrete waste can replace natural sand and gravel and are widely used in roadbed filling, non-load-bearing materials, and other fields. In the crushing process, the crusher is one of the key pieces of equipment, and its performance directly affects the quality and yield of recycled aggregates.

[0003] Different production scenarios have varying requirements for the particle size of the crushed recycled concrete waste. For example, larger particles need to be retained in the production of road base aggregate, while smaller aggregate particle sizes are required for the preparation of recycled concrete blocks. However, most existing crushers have fixed-length crushing teeth on their crushing rollers, making it difficult to adjust the distance between the crushing teeth on the two rollers according to the required particle size. This results in them only being able to produce materials of a single particle size. When production needs change and different particle sizes are required, it is necessary to replace the crushing rollers with different specifications or use other auxiliary equipment for secondary processing. This not only increases the equipment purchase cost and maintenance difficulty but also reduces production efficiency. Utility Model Content

[0004] To overcome the limitations of most existing crushers in the background technology, where the length of the crushing teeth on the crushing rollers is fixed, making it difficult to adjust the distance between the crushing teeth between the two rollers according to the required crushing particle size, resulting in the production of materials of a single particle size, and requiring the replacement of crushing rollers of different specifications or the use of other auxiliary equipment for secondary processing when production needs change and different particle sizes are required, this utility model provides a recycled concrete waste recycling device. Through the threaded engagement structure of the screw and the support rod, simply rotating the internal hexagonal nut can drive the support rod to move radially along the mounting plate, thereby synchronously adjusting the distance between the crushing teeth between the two rollers. This breaks through the limitations of traditional fixed crushing teeth, and can quickly adapt to different particle size requirements such as large-particle road base aggregate or small-particle recycled masonry block aggregate without replacing the crushing rollers, significantly improving the versatility of the equipment. The rectangular groove of the positioning plate and the support rod forms an anti-torsional constraint, and with the detachable crushing tooth installation method, worn crushing teeth can be replaced in a targeted manner, avoiding the material waste caused by the replacement of traditional integral crushing rollers and reducing maintenance costs.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A recycled concrete waste recycling device mainly includes a frame, a crushing box, a motor, and crushing rollers. The crushing box and motor are installed on the frame. Two sets of crushing rollers are installed inside the crushing box. Each crushing roller includes a rotating shaft, a positioning plate, a mounting plate, crushing teeth, a support rod, and a lead screw. The rotating shaft is installed on the crushing box through a bearing seat. The ends of the two rotating shafts penetrate the crushing box and are equipped with meshing gears. One of the rotating shafts is connected to the motor for transmission. Mounting plates are installed at both ends of the rotating shaft. A rectangular limiting groove is evenly provided along the circumference of the mounting plate. A rotatable lead screw is installed radially along the mounting plate inside the rectangular limiting groove. One end of the lead screw extends to the outside of the mounting plate and is connected to an internal hexagon nut. A support rod with a rectangular cross-section is evenly provided along the circumference between the mounting plates. The end of the support rod passes through the rectangular limiting groove and is threaded to the lead screw. Multiple sets of positioning plates are installed at equal intervals between the mounting plates. A rectangular groove that engages with the support rod is evenly provided along the circumference of the positioning plate. Multiple detachable breaking teeth are installed at equal intervals on the support rod. The breaking teeth are located between adjacent positioning plates.

[0006] The crushing tooth has a rectangular slot that engages with the support rod. The support rod has multiple threaded holes at equal intervals. The crushing tooth is engaged with the support rod and fixed with bolts.

[0007] The tip of the crushing tooth is equipped with a detachable carbide cutter head, which is fixed to the crushing tooth by screws.

[0008] The beneficial effects of this utility model are:

[0009] This invention utilizes a threaded connection between a lead screw and a support rod. Simply rotating the internal hexagonal nut moves the support rod radially along the mounting plate, simultaneously adjusting the spacing between the crushing teeth on the two rollers. This overcomes the limitations of traditional fixed crushing teeth, allowing for rapid adaptation to different particle size requirements, such as large-particle road base aggregate or small-particle recycled block aggregate, without the need to replace the crushing rollers. This significantly improves the equipment's versatility. The rectangular grooves of the positioning plate and support rod create anti-torsional constraints, and the detachable crushing tooth installation method allows for targeted replacement of worn crushing teeth, avoiding material waste caused by replacing traditional integral crushing rollers and reducing maintenance costs. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0011] Figure 2 This is a top view of the present invention.

[0012] Figure 3 This is an isometric view of the crushing roller.

[0013] Figure 4 This is a left view of the crushing roller.

[0014] Figure 5 This is a partial exploded view of the crushing roller.

[0015] Figure 6 It is a 3D diagram showing the installation status of the installation disk and positioning disk. Detailed Implementation

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0017] This utility model discloses a recycled concrete waste recycling device, which mainly includes a frame 1, a crushing box 2, a motor 3, and crushing rollers 4. The frame 1 is equipped with the crushing box 2 and the motor 3. Two sets of crushing rollers 4 are installed inside the crushing box 2. Each crushing roller 4 includes a rotating shaft 401, a positioning plate 402, a mounting plate 403, crushing teeth 404, a support rod 405, and a lead screw 406. The rotating shaft 401 is mounted on the crushing box 2 through a bearing seat. The ends of the two rotating shafts 401 pass through the crushing box 2 and are equipped with meshing gears. One of the rotating shafts 401 is connected to the motor 3 for transmission. Mounting plates 403 are installed at both ends of the rotating shaft 401. The mounting plates 403 are evenly distributed along the circumferential direction. A rectangular limiting groove 4031 is provided. A rotatable lead screw 406 is installed radially along the mounting plate 403 inside the rectangular limiting groove 4031. One end of the lead screw 406 extends to the outside of the mounting plate 403 and is connected to an internal hexagon nut. Support rods 405 with rectangular cross-sections are evenly installed in the circumferential direction between the mounting plates 403. The end of the support rod 405 passes through the rectangular limiting groove 4031 and is threadedly connected to the lead screw 406. Multiple sets of positioning plates 402 are installed at equal intervals between the mounting plates 403. Rectangular grooves 4021 that engage with the support rods 405 are evenly provided in the circumferential direction on the positioning plates 402. Multiple detachable breaking teeth 404 are installed at equal intervals on the support rods 405. The breaking teeth 404 are located between adjacent positioning plates 402.

[0018] First, the operator uses an Allen wrench to rotate the Allen nut on the mounting plate 403 according to the target crushing particle size, causing the lead screw 406 to rotate. The lead screw 406 drives the support rod 405 to move radially along the rectangular limiting groove 4031. The movement of the support rod 405 changes the distance between the crushing teeth 404 on the two rollers, thereby adjusting the crushing particle size. That is, when large-diameter aggregate is needed, the tooth spacing of the crushing teeth 404 on the two rollers is increased to form a powerful crushing chamber; when fine aggregate is needed, the tooth spacing of the crushing teeth 404 on the two rollers is decreased to achieve the fine crushing function. After the adjustment is completed, the electric motor is started. Machine 3, driven by motor 3, rotates one of the shafts 401. Due to the meshing of gears at the ends of the two shafts 401, the other shaft 401 also rotates in the opposite direction. The shafts 401 drive the mounting plate 403 and support rod 405 to rotate. Then, concrete waste is fed into the crushing box 2, where the rotating crushing teeth 404 shear and crush the material. The crushed material is discharged from the outlet at the bottom of the crushing box 2. The positioning plate 402, through the engagement of the rectangular groove 4021 with the support rod 405, forms an anti-torsional support structure, ensuring the stability of the crushing teeth 404 under high-pressure conditions. When the crushing teeth 404 are severely worn, the operator can remove them from the support rod 405 for replacement without replacing the entire crushing roller 4, improving work efficiency and reducing maintenance costs.

[0019] The crushing tooth 404 has a rectangular slot 4041 that engages with the support rod 405. The support rod 405 has multiple threaded holes at equal intervals. The crushing tooth 404 is engaged with the support rod 405 and fixed with bolts. When the crushing tooth 404 is worn or damaged, it can be easily removed from the support rod 405 for replacement without replacing the entire crusher. This reduces maintenance costs and downtime, and improves equipment efficiency. At the same time, the design of the rectangular slot 4041 ensures a firm and reliable connection between the crushing tooth 404 and the support rod 405, preventing loosening during the crushing process, thus ensuring the normal operation and safety of the equipment.

[0020] The tip of the crushing tooth 404 is equipped with a detachable carbide cutter head 407, which is fixed to the crushing tooth 404 by screws. Using the carbide cutter head 407 can extend the service life of the crushing tooth 404, reduce the replacement frequency, improve the working efficiency of the equipment, and reduce maintenance costs.

[0021] Work process:

[0022] First, the operator uses an Allen wrench to rotate the Allen nut on the mounting plate 403 according to the target crushing particle size, causing the lead screw 406 to rotate. The lead screw 406 drives the support rod 405 to move radially along the rectangular limiting groove 4031. The movement of the support rod 405 changes the distance between the crushing teeth 404 on the two rollers, thereby adjusting the crushing particle size. That is, when large-diameter aggregate is needed, the tooth spacing of the crushing teeth 404 on the two rollers is increased to form a powerful crushing chamber; when fine aggregate is needed, the tooth spacing of the crushing teeth 404 on the two rollers is decreased to achieve the fine crushing function. After the adjustment is completed, the electric motor is started. Machine 3, driven by motor 3, rotates one of the shafts 401. Due to the meshing of gears at the ends of the two shafts 401, the other shaft 401 also rotates in the opposite direction. The shafts 401 drive the mounting plate 403 and support rod 405 to rotate. Then, concrete waste is fed into the crushing box 2, where the rotating crushing teeth 404 shear and crush the material. The crushed material is discharged from the outlet at the bottom of the crushing box 2. The positioning plate 402, through the engagement of the rectangular groove 4021 with the support rod 405, forms an anti-torsional support structure, ensuring the stability of the crushing teeth 404 under high-pressure conditions. When the crushing teeth 404 are severely worn, the operator can remove them from the support rod 405 for replacement without replacing the entire crushing roller 4, improving work efficiency and reducing maintenance costs.

[0023] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A device for recycling recycled concrete waste, characterized in that: The aforementioned recycled concrete waste recycling device includes a frame (1), a crushing box (2), a motor (3), and crushing rollers (4). The frame (1) is equipped with the crushing box (2) and the motor (3). Two sets of crushing rollers (4) are installed inside the crushing box (2). Each crushing roller (4) includes a rotating shaft (401), a positioning plate (402), an mounting plate (403), crushing teeth (404), a support rod (405), and a lead screw (406). The rotating shaft (401) is mounted on the crushing box (2) through a bearing seat. The ends of the two rotating shafts (401) pass through the crushing box (2) and are equipped with meshing gears. One of the rotating shafts (401) is connected to the motor (3) for transmission. Mounting plates (403) are installed at both ends of the rotating shaft (401). Rectangular limiters are evenly provided on the mounting plates (403) along the circumferential direction. A rotatable lead screw (406) is installed radially along the mounting plate (403) inside the rectangular limiting groove (4031). One end of the lead screw (406) extends to the outside of the mounting plate (403) and is connected to an internal hexagonal nut. Support rods (405) with rectangular cross-sections are evenly installed between the mounting plates (403) along the circumferential direction. The end of the support rod (405) passes through the rectangular limiting groove (4031) and is threadedly connected to the lead screw (406). Multiple sets of positioning plates (402) are installed at equal intervals between the mounting plates (403). Rectangular grooves (4021) that engage with the support rods (405) are evenly opened on the positioning plates (402) along the circumferential direction. Multiple detachable breaking teeth (404) are evenly installed on the support rods (405). The breaking teeth (404) are located between adjacent positioning plates (402).

2. The recycled concrete waste recycling device as described in claim 1, characterized in that: The crushing tooth (404) is provided with a rectangular slot (4041) that engages with the support rod (405). The support rod (405) is provided with multiple threaded holes at equal intervals. The crushing tooth (404) is engaged with the support rod (405) and fixed with bolts.

3. A recycled concrete waste recycling device as described in claim 1 or 2, characterized in that: The tip of the crushing tooth (404) is provided with a detachable carbide cutter head (407), which is fixed to the crushing tooth (404) by screws.

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