A recycled concrete conditioning device

Abstract

The utility model relates to the technical field of concrete preparation, and disclose a kind of recycled concrete preparation device, including box and frame, crushing device is provided in box interior, the bottom of box is provided with discharge gate, conveying belt is installed on frame, discharge gate is compatible with conveying belt, collecting box is fixedly installed on frame, first connecting block is fixedly installed on frame, second connecting block is fixedly installed on collecting box, two fixed blocks are fixedly installed between first connecting block and second connecting block, sliding plate is slidably installed on two fixed blocks, electromagnet is embeddedly installed on the side of two sliding plates towards frame.The utility model is provided with electromagnet and matched exchange and cleaning mechanism of alternative operation, realize the continuous adsorption and automatic cleaning of iron impurities, do not interfere with each other, improve separation efficiency;Sliding box is convenient for collecting and discharging impurities, keep equipment clean, ensure the quality of recycled concrete and the stable operation of equipment.

Description

Technical Field

[0001] This utility model relates to the field of concrete preparation technology, specifically to a device for preparing recycled concrete. Background Technology

[0002] With the continuous advancement of urbanization and the rapid development of the construction industry, new construction, renovation, expansion, and demolition projects generate massive amounts of construction waste, of which waste concrete accounts for a significant proportion. Traditional disposal methods primarily involve open-air dumping or landfilling, which not only occupies a large amount of valuable land resources and damages the ecological environment but also causes serious environmental problems such as dust and groundwater pollution. Meanwhile, the over-exploitation of natural sand and gravel aggregates, a major component of concrete, has led to a series of problems, including the depletion of natural resources, ecological imbalance, and increased transportation energy consumption. Against this backdrop, the use of recycled aggregates from waste concrete, processed through crushing and screening, in the preparation of new concrete—i.e., recycled concrete technology—has become an important way to realize the resource utilization of construction solid waste and promote the sustainable development of the construction industry.

[0003] The patent with publication number CN221365237U discloses a recycled concrete mixing device, including a mixing tank, a mixing mechanism, a feeding hopper, and a feeding screening mechanism. The mixing mechanism is located inside the mixing tank. A first conveyor belt is located inside the suspension. The feeding screening mechanism is located on the suspension. A second conveyor belt is located below the discharge end of the first conveyor belt. The discharge end of the second conveyor belt is located above the inlet.

[0004] However, the aforementioned device has the following problems in use: Although it can effectively adsorb ferrous impurities in recycled concrete using magnetic separators, it has significant limitations in actual operation. Due to the limited adsorption area of ​​the magnets, and the continuous accumulation of ferrous particles on their surface during operation, the effective magnetic force decreases, and the adsorption efficiency drops accordingly. When the magnet surface is covered with impurities or reaches adsorption saturation, the machine must be stopped for manual cleaning or maintenance to restore its magnetic separation performance. This process not only increases the frequency and labor intensity of manual intervention but also causes interruptions in the production process, affecting overall processing efficiency and the realization of continuous operation. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a recycled concrete preparation device that ensures the quality of recycled concrete and the stable operation of the equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A recycled concrete mixing device includes a box and a frame. A crushing device is installed inside the box, and a discharge port is opened at the bottom of the box. A conveyor belt is installed on the frame, and the discharge port is adapted to the conveyor belt. A collection box is fixedly installed on the frame, a first connecting block is fixedly installed on the frame, and a second connecting block is fixedly installed on the collection box. Two fixing blocks are fixedly installed between the first and second connecting blocks. A sliding plate is slidably installed on each of the two fixing blocks. An electromagnet is embedded in the side of each sliding plate facing the frame, and each electromagnet can be independently engaged with the conveyor belt. The collection box is provided with a replacement mechanism and a cleaning mechanism.

[0007] Preferably, the two sliding plates are installed in a staggered manner, such that when one electromagnet is directly above the conveyor belt, the other electromagnet is directly above the collection box.

[0008] Preferably, the switching mechanism includes a mounting frame and a gear plate. The mounting frame is fixedly mounted on a fixed block. A stepper motor is mounted on the mounting frame. A connecting rod is fixedly mounted on the output end of the stepper motor shaft. The connecting rod passes through the mounting frame and is fixedly mounted with a gear. There are two gear plates. The two gear plates are fixedly mounted on corresponding sliding plates. The two gear plates are installed opposite each other. The two gear plates are located on both sides and are meshed with the gear.

[0009] Preferably, the cleaning mechanism includes a drive motor, which is mounted on the collection box. The output end of the drive motor shaft is fixedly mounted on a mounting shaft, which is rotatably mounted on the collection box. Two U-shaped frames are fixedly mounted on the mounting shaft, and cleaning blocks are mounted on both U-shaped frames. The mounting angles of the two U-shaped frames differ by 90°.

[0010] Preferably, both cleaning blocks are detachably mounted on the U-shaped frame by bolts, and the cleaning blocks can directly abut against the corresponding electromagnets.

[0011] Preferably, a sliding box is slidably mounted on the collection box, the sliding box is located at the bottom of the collection box, and a handle is fixedly mounted on the sliding box.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This invention significantly improves processing efficiency and resource reuse rate through an automated and coordinated design of crushing, conveying, magnetic separation, and cleaning collection. Its dual electromagnets, with a staggered layout and switching mechanism, enable continuous adsorption and cleaning of ferrous impurities, ensuring uninterrupted operation. The U-shaped frame design, linked to the cleaning mechanism's status, effectively removes impurities from the magnet surface without interfering with material detachment and collection. The overall device has a rational structure, a high degree of automation, and significantly reduces manual intervention, ensuring the purity and quality of the recycled concrete. It is also easy to maintain and suitable for large-scale recycling applications. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a recycled concrete mixing device proposed in this utility model; Figure 2 This is a schematic diagram showing the installation position of the collection box for a recycled concrete mixing device proposed in this utility model. Figure 3 This is a schematic diagram showing the installation position of the drive motor for a recycled concrete mixing device proposed in this utility model. Figure 4 This is a schematic diagram of the installation position of the sliding box of a recycled concrete mixing device proposed in this utility model. Figure 5 This is a schematic diagram of the installation position of the switching mechanism of the recycled concrete mixing device proposed in this utility model. Figure 6 This is a schematic diagram of the structure of the switching mechanism of the recycled concrete mixing device proposed in this utility model; Figure 7 This is a schematic diagram showing the installation position of the cleaning block in a recycled concrete mixing device proposed in this utility model. Figure 8 This is a schematic diagram of the cleaning mechanism of a recycled concrete mixing device proposed in this utility model.

[0014] In the diagram: 1. Box body; 2. Frame; 3. Crushing device; 4. Discharge port; 5. Conveyor belt; 6. Collection box; 7. First connecting block; 8. Second connecting block; 9. Fixing block; 10. Sliding plate; 11. Electromagnet; 12. Sliding box; 13. Handle; 14. Mounting frame; 15. Stepper motor; 16. Connecting rod; 17. Gear; 18. Tooth plate; 19. Drive motor; 20. Mounting shaft; 21. U-shaped frame; 22. Cleaning block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Please see Figures 1 to 8 A recycled concrete mixing device includes a housing 1 and a frame 2. A crushing device 3 is installed inside the housing 1, and a discharge port 4 is opened at the bottom of the housing 1. A conveyor belt 5 is installed on the frame 2, and the discharge port 4 is adapted to the conveyor belt 5. In actual operation, the operator first puts the waste concrete block into the housing 1 and starts the crushing device 3 to crush it into granules. The crushed material falls naturally onto the conveyor belt 5 through the discharge port 4 at the bottom, and is continuously conveyed outward by the conveyor belt 5 to realize continuous operation of crushing and conveying. The other end of the conveyor belt 5 is adapted to the feed port to realize the feeding activity.

[0017] Preferably, a paving device can be installed on the frame 2. After the material is output from the conveyor belt 5, the paving device can automatically spread the concrete particles evenly, which facilitates subsequent processing or direct application and improves construction efficiency and paving quality. Due to the existing technology, it will not be described in detail here.

[0018] A collection box 6 is fixedly installed on the frame 2. A first connecting block 7 is fixedly installed on the frame 2. A second connecting block 8 is fixedly installed on the collection box 6. Two fixing blocks 9 are fixedly installed between the first connecting block 7 and the second connecting block 8. A sliding plate 10 is slidably installed on each of the two fixing blocks 9. An electromagnet 11 is embedded in the side of each of the two sliding plates 10 facing the frame 2. Each of the two electromagnets 11 can be individually engaged with the conveyor belt 5. The collection box 6 is equipped with a replacement mechanism and a cleaning mechanism.

[0019] The collection box 6 is used to centrally process ferrous impurities in the material; the electromagnets 11 on the two sliding plates 10 can work alternately - when one electromagnet 11 is energized, it can adsorb ferromagnetic impurities in the material on the conveyor belt 5; after adsorption is completed, the switching mechanism switches to another electromagnet 11 to continue working, so as to achieve continuous adsorption without interrupting the conveying process.

[0020] Two sliding plates 10 are installed in a staggered manner. When one electromagnet 11 is directly above the conveyor belt 5, the other electromagnet 11 is directly above the collection box 6. This staggered design ensures that the two electromagnets 11 have a clear division of labor: one is responsible for adsorbing iron impurities above the conveyor belt 5, while the other is located above the collection box 6 to release impurities or prepare for cleaning, so that the adsorption and cleaning processes do not interfere with each other and improve efficiency.

[0021] The switching mechanism includes a mounting frame 14 and a gear plate 18. The mounting frame 14 is fixedly mounted on the fixed block 9. A stepper motor 15 is mounted on the mounting frame 14. A connecting rod 16 is fixedly mounted on the output end of the shaft of the stepper motor 15. The connecting rod 16 passes through the mounting frame 14 and is fixedly mounted with a gear 17. There are two gear plates 18. The two gear plates 18 are fixedly mounted on the corresponding sliding plates 10. The two gear plates 18 are installed opposite each other. The two gear plates 18 are located on both sides and both gear plates 18 are meshed with the gear 17.

[0022] When it is necessary to switch the operation of electromagnet 11, the stepper motor 15 is started to drive the gear 17 to rotate. The gear 17 simultaneously drives the two toothed plates 18 to move in opposite directions, thereby driving the two sliding plates 10 and electromagnet 11 to slide alternately to the target station (above the conveyor belt 5 or above the collection box 6), thus quickly realizing the station switching.

[0023] The cleaning mechanism includes a drive motor 19, which is mounted on the collection box 6. The output end of the drive motor 19 is fixedly mounted on a mounting shaft 20, which is rotatably mounted on the collection box 6. Two U-shaped frames 21 are fixedly mounted on the mounting shaft 20, and cleaning blocks 22 are mounted on both U-shaped frames 21, with the installation angles of the two U-shaped frames 21 differing by 90°.

[0024] After the drive motor 19 is started, it can drive the mounting shaft 20 to rotate, thereby adjusting the angle of the two U-shaped brackets 21; the cleaning block 22 is used to scrape off the impurities adsorbed on the surface of the electromagnet 11.

[0025] By controlling the U-shaped frame 21 to rotate 90 degrees via the drive motor 19, the working states of the two cleaning blocks 22 can be switched: the cleaning block 22 in the vertical state can contact the surface of the electromagnet 11 and perform scraping cleaning; the cleaning block 22 in the parallel state is away from the electromagnet 11 to avoid interfering with its adsorption or release operation.

[0026] Both cleaning blocks 22 are detachably mounted on the U-shaped frame 21 by means of bolts or other means, and the cleaning blocks 22 can directly abut against the corresponding electromagnets 11.

[0027] By making the U-shaped frame 21 that is adapted to the unloaded electromagnet 11 that moves from the collection box 6 to the frame 2 vertical, the U-shaped frame 21 can be cleaned smoothly. At this time, another U-shaped frame 21 that is adapted to the fully loaded electromagnet 11 that moves from the frame 2 to the collection box 6 is in a parallel state. The corresponding cleaning block 22 will not come into contact with the magnetic material adsorbed on the fully loaded electromagnet 11, so that the magnetic material adsorbed on the fully loaded electromagnet 11 can fall smoothly into the collection box 6 after the power is turned off.

[0028] A sliding box 12 is slidably installed on the collection box 6. The sliding box 12 is located at the bottom of the collection box 6, and a handle 13 is fixedly installed on the sliding box 12. The sliding box 12 is used to collect iron impurities and dust after cleaning. The sliding box 12 can be easily pulled out through the handle 13 to clean up the accumulated impurities regularly and maintain the long-term stable operation of the equipment.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A recycled concrete mixing device, comprising a box (1) and a frame (2), wherein a crushing device (3) is installed inside the box (1), and a discharge port (4) is provided at the bottom of the box (1), and a conveyor belt (5) is installed on the frame (2), the discharge port (4) being adapted to the conveyor belt (5), characterized in that, A collection box (6) is fixedly installed on the frame (2). A first connecting block (7) is fixedly installed on the frame (2). A second connecting block (8) is fixedly installed on the collection box (6). Two fixing blocks (9) are fixedly installed between the first connecting block (7) and the second connecting block (8). Sliding plates (10) are slidably installed on both fixing blocks (9). Electromagnets (11) are embedded on the side of the two sliding plates (10) facing the frame (2). Both electromagnets (11) can be individually coordinated with the conveyor belt (5). The collection box (6) is equipped with a replacement mechanism and a cleaning mechanism.

2. The recycled concrete mixing device according to claim 1, characterized in that, Two sliding plates (10) are installed in a staggered manner, such that when one electromagnet (11) is directly above the conveyor belt (5), the other electromagnet (11) is directly above the collection box (6).

3. The recycled concrete mixing device according to claim 1, characterized in that, The switching mechanism includes a mounting frame (14) and a gear plate (18). The mounting frame (14) is fixedly mounted on the fixed block (9). A stepper motor (15) is mounted on the mounting frame (14). A connecting rod (16) is fixedly mounted on the output end of the shaft of the stepper motor (15). The connecting rod (16) passes through the mounting frame (14) and is fixedly mounted with a gear (17). There are two gear plates (18). The two gear plates (18) are fixedly mounted on the corresponding sliding plates (10). The two gear plates (18) are installed opposite each other. The two gear plates (18) are located on both sides and both gear plates (18) are meshed with the gear (17).

4. The recycled concrete mixing device according to claim 1, characterized in that, The cleaning mechanism includes a drive motor (19), which is mounted on the collection box (6). The output end of the shaft of the drive motor (19) is fixedly mounted on a mounting shaft (20). The mounting shaft (20) is rotatably mounted on the collection box (6). Two U-shaped frames (21) are fixedly mounted on the mounting shaft (20). Cleaning blocks (22) are mounted on both U-shaped frames (21), and the installation angles of the two U-shaped frames (21) differ by 90°.

5. A recycled concrete mixing device according to claim 4, characterized in that, Both cleaning blocks (22) are detachably mounted on the U-shaped frame (21) by bolts, and the cleaning blocks (22) can directly abut against the corresponding electromagnets (11).

6. The recycled concrete mixing device according to claim 1, characterized in that, A sliding box (12) is slidably installed on the collection box (6). The sliding box (12) is located at the bottom of the collection box (6), and a handle (13) is fixedly installed on the sliding box (12).

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