Construction waste crushing device
By using a magnetic rotating roller to attract metal fragments in a construction waste crushing device, combined with a mesh plate and scraper for separation, the problem of difficult separation of mixed metal and non-metal materials is solved, achieving efficient material separation and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-04-03
AI Technical Summary
Metal scraps mixed with non-metallic materials in construction waste are difficult to separate, affecting the purity of the crushed material and damaging processing equipment.
Crushing is performed using a rotating roller with magnets. The magnets attract metal fragments, which are then separated from non-metallic materials by screening with a screen and scraping.
It effectively separates metallic and non-metallic materials, improves the purity of the crushed material, protects equipment, and reduces the failure rate.
Smart Images

Figure CN224072077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a construction waste crushing device. Background Technology
[0002] Construction and demolition processes in the building industry generate a large amount of construction waste, such as concrete blocks, bricks, wood, and metal. Effective treatment and reuse of this construction waste not only reduces environmental pollution but also conserves resources, holding significant economic and environmental importance. Construction waste crushing equipment is one of the key pieces of equipment for realizing the resource utilization of this construction waste. It can crush large pieces of construction waste into smaller particles to facilitate subsequent transportation, storage, and reprocessing.
[0003] Construction waste often contains various metal materials, such as steel bars and nails. After crushing, these metal fragments mix with non-metallic materials and are difficult to separate. This not only affects the purity of the crushed material but also damages subsequent processing equipment, such as causing increased wear and tear and higher failure rates.
[0004] Therefore, a construction waste crushing device is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a construction waste crushing device in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A construction waste crushing device includes a crushing box, and a crushing mechanism is provided inside the crushing box for crushing construction waste. A rotating roller is rotatably installed inside the crushing box, and a transmission component is connected to the end of the rotating roller and the crushing mechanism to drive the rotating roller to rotate via the crushing mechanism. Several sets of magnets are embedded on the surface of the rotating roller. A mesh plate and a discharge plate are fixedly installed on the inner wall of the crushing box, and the rotating roller is located above the mesh plate. A scraper is provided on the surface of the discharge plate and is in contact with the surface of the rotating roller.
[0008] Furthermore, the top surface of the crushing box is provided with a feed inlet, and a feed hopper is fixedly installed on the top surface of the crushing box at a position corresponding to the feed inlet.
[0009] Furthermore, the crushing mechanism includes two sets of rotating shafts rotatably inserted into the crushing box, and crushing rollers are fixedly sleeved on the surface of the rotating shafts. The two sets of crushing rollers mesh with each other. Gears are fixedly installed at the ends of the rotating shafts, and two sets of gears mesh with each other. An electric motor is fixedly installed on the surface of the crushing box, and the output end of the electric motor is fixedly connected to the end of one of the rotating shafts.
[0010] Furthermore, the transmission assembly includes a large synchronous pulley fixedly installed at the end of another set of rotating shafts and a small synchronous pulley fixedly installed at the end of the rotating roller, and a synchronous belt is fitted on the surface of the large synchronous pulley and the small synchronous pulley.
[0011] Furthermore, the scraper has an arc-shaped structure, and the scraper slides in close contact with the surface of the rotating roller.
[0012] Furthermore, the mesh plate and the discharge plate are installed at an angle inside the crushing box, and the mesh plate and the discharge plate are arranged in parallel.
[0013] The beneficial effects of this utility model are as follows:
[0014] The crushing mechanism crushes the construction waste. Simultaneously, the crushing mechanism drives the rotating roller to rotate. During the rotation, the magnets on the rotating roller attract metal fragments from the construction waste. The screen plate is used to screen the crushed material, allowing it to be discharged through the mesh. Larger particles are discharged along the screen plate and can be further crushed. As the rotating roller rotates, the scraper on the discharge plate scrapes off the metal fragments adsorbed on the surface of the magnet, thus achieving the separation of metal and non-metal materials. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a rear view of the present invention;
[0017] Figure 3 This is a front sectional view of the present invention;
[0018] Figure 4 This is a schematic diagram of the discharge plate of this utility model;
[0019] Figure 5 This is a schematic diagram of the rotating roller of this utility model;
[0020] Reference numerals in the attached drawings: 1. Crushing box; 2. Feed hopper; 3. Crushing mechanism; 301. Rotating shaft; 302. Crushing roller; 303. Gear; 304. Motor; 4. Transmission assembly; 401. Large synchronous pulley; 402. Small synchronous pulley; 403. Synchronous belt; 5. Rotating roller; 6. Magnet; 7. Mesh plate; 8. Discharge plate; 81. Scraper. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0025] like Figures 1 to 5As shown, a construction waste crushing device includes a crushing box 1, and a crushing mechanism 3 is provided inside the crushing box 1 for crushing construction waste. A rotating roller 5 is rotatably installed inside the crushing box 1, and a transmission assembly 4 is connected to the end of the rotating roller 5 and the crushing mechanism 3 to drive the rotating roller 5 to rotate via the crushing mechanism 3. Several sets of magnets 6 are embedded on the surface of the rotating roller 5. A mesh plate 7 and a discharge plate 8 are fixedly installed on the inner wall of the crushing box 1, and the rotating roller 5 is located above the mesh plate 7. A scraper 81 is provided on the surface of the discharge plate 8 and is in contact with the surface of the rotating roller 5. More specifically, the crushing mechanism 3 crushes the construction waste. Simultaneously, the crushing mechanism 3 drives the rotating roller 5 to rotate. During the rotation, the magnet 6 on the rotating roller 5 attracts metal fragments from the construction waste. The screen plate 7 is used to screen the crushed material, allowing it to be discharged through the mesh. Larger particles are discharged along the screen plate 7 and can be crushed again. When the rotating roller 5 rotates, the scraper 81 on the discharge plate 8 scrapes off the metal fragments adsorbed on the surface of the magnet 6, thus achieving the separation of metal and non-metal materials.
[0026] The crushing box 1 has a feed inlet on its top surface, and a feed hopper 2 is fixedly installed on the top surface of the crushing box 1 at a position corresponding to the feed inlet. More specifically, the feed hopper 2 is used to guide construction waste into the crushing box 1, ensuring that the material can enter the crushing mechanism 3 evenly for crushing.
[0027] The crushing mechanism 3 includes two sets of rotating shafts 301 rotatably inserted into the crushing box 1. Crushing rollers 302 are fixedly sleeved on the surface of each shaft 301, and the two sets of crushing rollers 302 mesh with each other. Gears 303 are fixedly installed at the ends of the shafts 301, and the two sets of gears 303 mesh with each other. A motor 304 is fixedly installed on the surface of the crushing box 1, and the output end of the motor 304 is fixedly connected to the end of one set of rotating shafts 301. More specifically, the motor 304 drives one set of rotating shafts 301 to rotate, and through the meshing transmission of the gears 303, the two sets of crushing rollers 302 rotate synchronously in opposite directions, thereby squeezing and crushing the construction waste.
[0028] The transmission assembly 4 includes a large synchronous pulley 401 fixedly mounted on the end of another set of rotating shafts 301 and a small synchronous pulley 402 fixedly mounted on the end of the rotating roller 5. A synchronous belt 403 is fitted onto the surfaces of the large synchronous pulley 401 and the small synchronous pulley 402. More specifically, the large synchronous pulley 401 and the small synchronous pulley 402 are connected by the synchronous belt 403, which transmits the power of the crushing mechanism 3 to the rotating roller 5, so that the rotating roller 5 rotates synchronously when the crushing mechanism 3 is crushing.
[0029] The scraper 81 has an arc-shaped structure and slides in close contact with the surface of the rotating roller 5. More specifically, the arc-shaped scraper 81 can closely adhere to the surface of the rotating roller 5, effectively scraping off the metal debris adsorbed on the surface of the magnet 6 when the rotating roller 5 rotates, ensuring the complete separation of the metal debris.
[0030] The screen plate 7 and the discharge plate 8 are installed at an angle inside the crushing box 1, and are arranged in parallel. More specifically, the angled installation of the screen plate 7 and the discharge plate 8 facilitates the sliding and discharge of materials, thereby improving crushing and separation efficiency.
[0031] In summary: The crushing mechanism 3 crushes the construction waste, and the crushing mechanism 3 drives the rotating roller 5 to rotate. The magnet 6 on the rotating roller 5 attracts metal fragments from the construction waste during the rotation. The screen plate 7 is used to screen the crushed material and discharge it through the mesh. Larger particles are discharged along the screen plate 7 and can be crushed again. The scraper 81 on the discharge plate 8 scrapes off the metal fragments attracted to the surface of the magnet 6 when the rotating roller 5 rotates, thus achieving the separation of metal and non-metal materials.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A construction waste crushing device, characterized in that, The device includes a crushing box (1) and a crushing mechanism (3) is provided inside the crushing box (1) for crushing construction waste. A rotating roller (5) is rotatably installed inside the crushing box (1), and a transmission assembly (4) is connected to the end of the rotating roller (5) and the crushing mechanism (3) to drive the rotating roller (5) to rotate via the crushing mechanism (3). Several sets of magnets (6) are embedded on the surface of the rotating roller (5). A mesh plate (7) and a discharge plate (8) are fixedly installed on the inner wall of the crushing box (1), and the rotating roller (5) is located above the mesh plate (7). A scraper (81) is provided on the surface of the discharge plate (8) and is in contact with the surface of the rotating roller (5).
2. The construction waste crushing device according to claim 1, characterized in that, The crushing box (1) has a feed inlet on its top surface, and a feed hopper (2) is fixedly installed on the top surface of the crushing box (1) at a position corresponding to the feed inlet.
3. The construction waste crushing device according to claim 1, characterized in that, The crushing mechanism (3) includes two sets of rotating shafts (301) rotatably inserted into the crushing box (1), and crushing rollers (302) are fixedly sleeved on the surface of the rotating shafts (301). The two sets of crushing rollers (302) mesh with each other. Gears (303) are fixedly installed at the ends of the rotating shafts (301), and the two sets of gears (303) mesh with each other. A motor (304) is fixedly installed on the surface of the crushing box (1), and the output end of the motor (304) is fixedly connected to the end of one of the rotating shafts (301).
4. The construction waste crushing device according to claim 1, characterized in that, The transmission assembly (4) includes a large synchronous pulley (401) fixedly installed at the end of another set of rotating shafts (301) and a small synchronous pulley (402) fixedly installed at the end of the rotating roller (5). The surfaces of the large synchronous pulley (401) and the small synchronous pulley (402) are fitted with synchronous belts (403).
5. A construction waste crushing device according to claim 1, characterized in that, The scraper (81) has an arc-shaped structure, and the scraper (81) slides in contact with the surface of the rotating roller (5).
6. The construction waste crushing device according to claim 1, characterized in that, The mesh plate (7) and the discharge plate (8) are installed at an angle inside the crushing box (1), and the mesh plate (7) and the discharge plate (8) are arranged in parallel.