Recycled concrete aggregate pretreatment device

Abstract

The utility model belongs to the technical field of recycled concrete processing equipment, and discloses a recycled concrete aggregate pretreatment device which comprises a treatment box body, a smashing roller is integrated in the treatment box body, the bottom of the smashing roller is fixedly connected with an inclined material guide plate, the bottom end of the outer wall of the material guide plate is fixedly connected with a rack, and the rack is fixedly connected with the smashing roller. A first electric telescopic rod is mounted on the side wall of the treatment box body at an inclined angle, the output end of the first electric telescopic rod is connected with a mounting plate, a gear is mounted on the mounting plate, the outer wall of the gear is connected with a rotating shaft, and the outer wall of the rotating shaft is connected with a plurality of elastic components. And the first electric telescopic rod is started, the elastic assembly is driven to move and rotate by means of the mutual meshing effect of the rack and the gear, and then the material guide plate is knocked. The evenly distributed knocking force can effectively prevent the materials from being accumulated on the material guide plate, and continuity and high efficiency in the discharging process are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of recycled concrete processing equipment, specifically relating to a pretreatment device for recycled concrete aggregates. Background Technology

[0002] A recycled concrete aggregate pretreatment unit is a device specifically designed to process waste concrete, aiming to transform discarded concrete structures or building materials into reusable aggregates.

[0003] Application No. 202321076492.3 discloses a pretreatment device for aggregates used in recycled concrete. The device states that "when the rotating shaft rotates, it drives the elastic rod to rotate until the rubber ball hits the bottom of the guide plate, causing the guide plate to vibrate. This causes the raw material on the guide plate to move quickly along the guide plate, improving discharge efficiency and preventing blockage." However, because the rubber ball continuously hits the fixed position of the guide plate, the vibration effect is concentrated only near the impact point, resulting in a limited range of action. Areas far from the impact point experience insufficient vibration, leading to uneven material movement and potential blockages. This not only affects the clearing efficiency but may also cause uneven equipment wear and shorten the equipment's lifespan. Therefore, improvements are needed to achieve a comprehensive and uniform vibration effect, enhancing the overall performance and reliability of the device. Utility Model Content

[0004] The purpose of this invention is to provide a pretreatment device for recycled concrete aggregates to solve the problems mentioned in the background art, such as the fixed impact position of the rubber ball, limited vibration, impact on clearing blockages, easy clogging and wear, and the need for improvement to achieve comprehensive and uniform vibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment device for recycled concrete aggregate, comprising: a treatment box, wherein a crushing roller is integrated inside the treatment box, an inclined guide plate is fixedly connected to the bottom of the crushing roller, a discharge port is opened on the side wall of the treatment box, and the end of the guide plate extends to the outside of the discharge port, a recycling box is provided at the bottom of the side wall of the discharge port, a rack is fixedly connected to the bottom of the outer wall of the guide plate, a first electric telescopic rod is installed on the side wall of the treatment box at an inclined angle, an installation plate is connected to the output end of the first electric telescopic rod, a gear is installed on the installation plate, the rack and the gear form a meshing transmission pair, a rotating shaft is connected to the outer wall of the gear, and a plurality of elastic components are connected to the outer wall of the rotating shaft.

[0006] Preferably, the elastic component includes an elastic rod and a rubber ball, and a plurality of the elastic components are arranged in a surrounding manner around the outer wall of the rotating shaft. The elastic rod is connected to the outer wall of the rotating shaft, and the rubber ball is installed at the end of the elastic rod away from the rotating shaft.

[0007] Through the above technical solution:

[0008] In operation, the crushing roller, as one of the core components of this device, primarily functions to efficiently crush the recycled concrete entering the processing chamber. The crushed material falls naturally to the upper surface of the inclined guide plate under gravity. To ensure smooth discharge, the inclined guide plate is set at a specific angle, guiding the crushed material towards the discharge port, ultimately causing it to fall into the recycling bin for reuse.

[0009] When the equipment is started and enters the working state, the first electric telescopic rod begins to operate. This electric telescopic rod is installed at the same tilt angle as the guide plate, ensuring that its direction of movement is consistent with the tilt direction of the guide plate. The mounting plate is located below the guide plate and is connected to the output end of the first electric telescopic rod. As the first electric telescopic rod extends and retracts, the mounting plate moves accordingly.

[0010] The rack and pinion form a meshing transmission pair. When the mounting plate moves, the gear fixed on it begins to rotate. The rotation of the gear drives the shaft connected to it to move together, which in turn drives the elastic component mounted on the outer wall of the shaft to rotate.

[0011] During the rotation of the shaft, the rubber ball connected to the elastic rod continuously strikes the guide plate. This continuous striking motion causes the guide plate to vibrate, effectively promoting the rapid movement of material along the inclined direction of the guide plate. This design significantly improves discharge efficiency and effectively prevents material blockage on the guide plate.

[0012] The elastic rod bends and deforms during the striking process. This deformation not only absorbs the impact and vibration during the striking, protecting the equipment from damage, but also ensures that the rubber ball can smoothly follow the rotation of the shaft and maintain continuous striking action.

[0013] A rack and pinion is positioned at the bottom of the guide plate and has a certain length, allowing the gears to rotate while simultaneously moving the elastic component along the length of the guide plate. Because the elastic component continuously strikes different areas of the guide plate during its movement, the rubber ball can cover a larger area at the bottom of the guide plate, avoiding the problems of localized stress concentration or blind spots caused by striking only a single location. This design ensures that every area of ​​the guide plate receives effective striking, thereby improving overall work efficiency.

[0014] By rotating and moving simultaneously, the impact force of the rubber ball on the guide plate is evenly distributed across the entire bottom of the guide plate. This uniform impact force distribution not only effectively prevents localized material accumulation on the guide plate but also reduces wear caused by excessive localized impacts, extending the equipment's service life. The uniform impact allows material on the guide plate to move more quickly and smoothly along the inclined direction, reducing the material's residence time on the guide plate. This design effectively prevents blockages caused by material retention, ensuring the continuity and efficiency of the discharge process.

[0015] The processing box is equipped with a second electric telescopic rod at an inclined angle on its side wall. A first connecting plate is fixed to the output end of the second electric telescopic rod. A second connecting plate is fixed to the side wall of the first connecting plate. An electric push rod is installed on the outer wall of the second connecting plate. The movement trajectories of the second electric telescopic rod and the electric push rod are orthogonal in space. A scraper is fixed to the output end of the electric push rod. A baffle is fixed to the side wall of the scraper. The scraper can achieve controllable contact with the upper surface of the inclined guide plate under the coordinated driving action of the second electric telescopic rod and the electric push rod.

[0016] Preferably, the side wall of the processing box is provided with a through groove, a partition is movably connected in the through groove, and a roller is installed at the bottom end of the partition;

[0017] A protective cover is fixedly installed on the side wall of the processing box, and the protective cover is installed on one side of the through groove. The protective cover covers the first electric telescopic rod and the second electric telescopic rod.

[0018] Through the above technical solution:

[0019] In order to ensure the continuous and efficient operation of the inclined guide plate and prevent material blockage during use, the device is designed with a periodic unblocking mechanism.

[0020] The second electric telescopic rod is activated periodically at preset time intervals or according to the blockage of the guide plate. This electric telescopic rod is installed at an inclined angle on the side wall of the processing chamber, and its main function is to provide power to drive the scraper to perform the cleaning action. After the second electric telescopic rod is activated, the first connecting plate moves accordingly. The first connecting plate is fixed to the output end of the second electric telescopic rod, and its movement direction is consistent with the extension and retraction direction of the electric telescopic rod. Simultaneously, as the second electric telescopic rod moves the first connecting plate, the electric push rod is activated. Under the coordinated driving action of the second electric telescopic rod and the electric push rod, the scraper is pushed forward, achieving controllable contact with the upper surface of the inclined guide plate. This ensures that the scraper can effectively perform the cleaning function. Driven by the second electric telescopic rod, the scraper acts on the guide plate, pushing down the accumulated material on the guide plate, effectively preventing material jamming caused by stagnation. A baffle is fixed to the side wall of the scraper, its function being to block the front end of the scraper, preventing accumulated material from overturning during the scraper's pushing process, ensuring the smooth progress of the cleaning process.

[0021] When the second electric telescopic rod retracts, the electric push rod also retracts. This design ensures that the raw material is not carried upwards during the scraper's return movement, avoiding material accumulation or blockage caused by the scraper's return. Under the coordinated drive of the second electric telescopic rod and the electric push rod, the first connecting plate retracts into the protective cover through the through slot. The protective cover covers the first and second electric telescopic rods, preventing the entry of external foreign objects and protecting these critical components from damage. A partition is movably connected to the through slot, which can be opened by the action of the first connecting plate. When the first connecting plate retracts, the partition closes, ensuring that material does not enter the protective cover. This design effectively prevents material from interfering with and damaging the internal components of the protective cover. A roller is installed at the bottom of the partition, which contacts the second electric telescopic rod and the second connecting plate, converting sliding friction into rolling friction. This design significantly reduces friction, avoiding jamming caused by excessive friction and ensuring smooth operation of the device.

[0022] Preferably, a dust suction hood is provided on one side of the inlet and outlet of the processing box. The outlet of the dust suction hood is connected to a guide pipe, the outlet of the guide pipe is equipped with a collection box, and the outlet of the collection box is equipped with a fan.

[0023] Specifically, a dust suction hood is installed at the inlet of the material entering the processing chamber. The function of this hood is to capture dust and fine particulate matter generated during the material feeding process. One end of the feed pipe is connected to the outlet of the dust suction hood, and its function is to guide the dust and fine particulate matter collected by the hood. A collection box is installed at the outlet end of the feed pipe to collect the dust and fine particulate matter conveyed by the feed pipe. A blower is installed at the air outlet of the collection box; the blower generates negative pressure during operation to ensure that dust and fine particulate matter can be efficiently sucked in and collected.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] (1) This utility model achieves uniform impact on the guide plate by setting a first electric telescopic rod, rack, gear, and elastic component. In actual use, the first electric telescopic rod is activated, and the elastic component is driven to move and rotate while being meshed by the rack and gear, thereby impacting the guide plate. This uniformly distributed impact force can effectively prevent local accumulation of material on the guide plate, reduce wear on the guide plate, and thus extend the service life of the equipment. At the same time, the material can move faster and more smoothly, shortening the residence time of the material on the guide plate and ensuring the continuity and efficiency of the discharge process.

[0026] (2) This utility model achieves the cleaning operation on the upper surface of the guide plate by setting components such as a second electric telescopic rod, an electric push rod, and a scraper. During equipment operation, the second electric telescopic rod starts at a set cycle, driving the scraper to clean the inclined guide plate. The electric push rod works in conjunction with the second electric telescopic rod to push the scraper forward, keeping it in controllable contact with the guide plate, which can efficiently clean the material accumulated on the guide plate and effectively prevent material jamming. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the material guide plate of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the first electric telescopic rod of this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the second electric telescopic rod of this utility model;

[0031] Figure 5 This is a schematic diagram of the gear structure of this utility model;

[0032] Figure 6 This is a schematic diagram of the scraper structure of this utility model;

[0033] In the diagram: 1. Processing box; 2. Crushing roller; 3. Guide plate; 4. Discharge port; 5. Recycling box; 6. Rack; 7. First electric telescopic rod; 8. Mounting plate; 9. Shaft; 10. Gear; 11. Elastic rod; 12. Rubber ball; 13. Second electric telescopic rod; 14. First connecting plate; 15. Second connecting plate; 16. Electric push rod; 17. Scraper; 18. Baffle; 19. Through groove; 20. Partition; 21. Roller; 22. Protective cover; 23. Dust suction hood; 24. Collection box; 25. Fan; 26. Guide pipe. Detailed Implementation

[0034] 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.

[0035] Please see Figures 1-5 As shown, this utility model provides the following technical solution: a pretreatment device for recycled concrete aggregate, comprising: a treatment box 1, a crushing roller 2 integrated inside the treatment box 1, an inclined guide plate 3 fixedly connected to the bottom of the crushing roller 2, a discharge port 4 opened on the side wall of the treatment box 1, and the end of the guide plate 3 extending to the outside of the discharge port 4, a recycling box 5 provided at the bottom of the side wall of the discharge port 4, a rack 6 fixedly connected to the bottom of the outer wall of the guide plate 3, a first electric telescopic rod 7 installed at an inclined angle on the side wall of the treatment box 1, an installation plate 8 connected to the output end of the first electric telescopic rod 7, a gear 10 installed on the installation plate 8, the rack 6 and the gear 10 forming a meshing transmission pair, a rotating shaft 9 connected to the outer wall of the gear 10, and several elastic components connected to the outer wall of the rotating shaft 9.

[0036] Furthermore, the elastic components include an elastic rod 11 and a rubber ball 12. Several elastic components are arranged in a surrounding manner around the outer wall of the rotating shaft 9. The elastic rod 11 is connected to the outer wall of the rotating shaft 9, and the rubber ball 12 is installed at the end of the elastic rod 11 away from the rotating shaft 9.

[0037] Through the above technical solution:

[0038] In use, the crushing roller 2, as one of the core components of this device, primarily functions to efficiently crush the recycled concrete entering the processing chamber 1. The crushed material falls naturally to the upper surface of the inclined guide plate 3 under gravity. To ensure smooth material discharge, the inclined guide plate 3 is set at a specific angle, guiding the crushed material towards the discharge port 4, ultimately causing it to fall into the recycling bin 5, thus achieving material recycling and reuse.

[0039] When the equipment is started and enters the working state, the first electric telescopic rod 7 begins to operate. This electric telescopic rod is installed at the same tilt angle as the guide plate 3, ensuring that its direction of movement is consistent with the tilt direction of the guide plate 3. The mounting plate 8 is located below the guide plate 3 and is connected to the output end of the first electric telescopic rod 7. As the first electric telescopic rod 7 extends and retracts, the mounting plate 8 moves accordingly.

[0040] Rack 6 and gear 10 form a meshing transmission pair. When mounting plate 8 moves, its parallel movement on one side of rack 6 causes rack 6 to contact and interact with gear 10, thereby driving gear 10 to rotate. Simultaneously, gear 10's rotation causes the connected shaft 9 to rotate synchronously, driving the elastic component mounted on the outer wall of shaft 9 to rotate. To ensure the integrity of the equipment, shaft 9 can be connected to mounting plate 8 via bearings. This connection method ensures both flexible rotation of shaft 9 and a stable connection to mounting plate 8, making the equipment operation more stable and reliable.

[0041] During the rotation of the shaft 9, the rubber ball 12 connected to the elastic rod 11 continuously strikes the guide plate 3. This continuous striking action causes the guide plate 3 to vibrate, thereby effectively promoting the rapid movement of material on the guide plate 3 along its inclined direction. This design significantly improves discharge efficiency and effectively prevents material blockage on the guide plate 3.

[0042] The elastic rod 11 bends and deforms during the striking process. This deformation not only absorbs the impact and vibration during the striking, protecting the equipment from damage, but also ensures that the rubber ball 12 can smoothly follow the rotation of the shaft 9 and maintain continuous striking action.

[0043] The rack 6 is positioned at the bottom of the guide plate 3 and has a certain length, allowing the gear 10 to rotate while simultaneously driving the elastic component to move along the length of the guide plate 3. Because the elastic component continuously strikes different locations on the guide plate 3 during its movement, the rubber ball 12 can cover a larger area at the bottom of the guide plate 3, avoiding the problems of localized stress concentration or blind spots caused by striking only a single location. This design ensures that every area of ​​the guide plate 3 receives effective striking, thereby improving overall work efficiency.

[0044] By rotating and moving simultaneously, the impact force of the rubber ball 12 on the guide plate 3 is evenly distributed across the entire bottom of the guide plate 3. This uniform impact force distribution not only effectively prevents localized material accumulation on the guide plate 3 but also reduces wear on the guide plate 3 caused by excessive localized impacts, extending the service life of the equipment. The uniform impact allows the material on the guide plate 3 to move more quickly and smoothly along the inclined direction, reducing the material's residence time on the guide plate 3. This design effectively prevents blockages caused by material retention, ensuring the continuity and efficiency of the discharge process.

[0045] Please see Figures 1-6 As shown, a second electric telescopic rod 13 is installed at an inclined angle on the side wall of the processing box 1. A first connecting plate 14 is fixed to the output end of the second electric telescopic rod 13. A second connecting plate 15 is fixed to the side wall of the first connecting plate 14. An electric push rod 16 is installed on the outer wall of the second connecting plate 15. The movement trajectories of the second electric telescopic rod 13 and the electric push rod 16 are orthogonal in space. A scraper 17 is fixed to the output end of the electric push rod 16. A baffle 18 is fixed to the side wall of the scraper 17. The scraper 17 can achieve controllable contact with the upper surface of the inclined guide plate 3 under the coordinated driving action of the second electric telescopic rod 13 and the electric push rod 16.

[0046] Furthermore, a through groove 19 is provided on the side wall of the processing box 1, and a partition 20 is movably connected in the through groove 19. A roller 21 is installed at the bottom end of the partition 20.

[0047] A protective cover 22 is fixedly installed on the side wall of the processing box 1, and the protective cover 22 is installed on one side of the through groove 19. The protective cover 22 covers the first electric telescopic rod 7 and the second electric telescopic rod 13.

[0048] Through the above technical solution:

[0049] In order to ensure the continuous and efficient operation of the inclined guide plate 3 and to prevent material blockage, the device is designed with a periodic unblocking mechanism.

[0050] The second electric telescopic rod 13 is activated periodically at preset time intervals or according to the blockage status of the guide plate 3. This electric telescopic rod is installed at an inclined angle on the side wall of the processing box 1, and its main function is to provide power to drive the scraper 17 to perform the cleaning action. After the second electric telescopic rod 13 is activated, the first connecting plate 14 moves accordingly. The first connecting plate 14 is fixed to the output end of the second electric telescopic rod 13, and its moving direction is consistent with the extension and retraction direction of the electric telescopic rod. Simultaneously, as the second electric telescopic rod 13 drives the first connecting plate 14 to move, the electric push rod 16 is activated. Under the coordinated driving action of the second electric telescopic rod 13 and the electric push rod 16, the scraper 17 is pushed forward, achieving controllable contact with the upper surface of the inclined guide plate 3. This ensures that the scraper 17 can effectively perform the cleaning function. Driven by the second electric telescopic rod 13, the scraper 17 acts on the guide plate 3, pushing down the material accumulated on the guide plate 3, effectively avoiding material jamming caused by stagnation. The baffle 18 is fixed to the side wall of the scraper 17. Its function is to block the front end of the scraper 17 to prevent the accumulated material from overturning during the pushing process of the scraper 17, thus ensuring the smooth progress of the cleaning process.

[0051] When the second electric telescopic rod 13 retracts, the electric push rod 16 also retracts. This design ensures that the raw material is not moved upwards during the retraction of the scraper 17, avoiding material accumulation or blockage caused by the retraction of the scraper 17. Under the coordinated driving action of the second electric telescopic rod 13 and the electric push rod 16, the first connecting plate 14 retracts into the protective cover 22 through the through groove 19. The protective cover 22 covers the first electric telescopic rod 7 and the second electric telescopic rod 13, preventing the entry of foreign objects and protecting these critical components from damage. A partition 20 is movably connected to the through groove 19, which can be opened by the action of the first connecting plate 14. When the first connecting plate 14 retracts, the partition 20 closes, ensuring that material does not enter the protective cover 22. This design effectively prevents material from interfering with and damaging the internal components of the protective cover 22. A roller 21 is installed at the bottom end of the partition 20, which contacts the second electric telescopic rod 13 and the second connecting plate 15, converting sliding friction into rolling friction. This design significantly reduces friction, preventing jamming caused by excessive friction and ensuring smooth operation of the device.

[0052] For further details, please refer to Figure 1 As shown, a dust suction hood 23 is provided on one side of the feed end and the discharge port 4 of the processing box 1. The discharge end of the dust suction hood 23 is connected to a guide pipe 26. A collection box 24 is installed at the discharge end of the guide pipe 26. A fan 25 is installed at the air outlet end of the collection box 24.

[0053] Specifically, a dust suction hood 23 is installed at the inlet of the material entering the processing chamber 1. The function of the dust suction hood 23 is to capture dust and fine particles generated during the material feeding process. One end of the guide pipe 26 is connected to the outlet 4 of the dust suction hood 23, and its function is to guide the dust and fine particles collected by the dust suction hood 23. A collection box 24 is installed at the outlet end of the guide pipe 26 to collect the dust and fine particles conveyed by the guide pipe 26. A blower 25 is installed at the air outlet of the collection box 24. The operation of the blower 25 generates negative pressure to ensure that dust and fine particles can be efficiently sucked in and collected.

[0054] 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 pretreatment device for recycled concrete aggregates, characterized in that, include: The processing box (1) integrates a crushing roller (2) inside. An inclined guide plate (3) is fixedly connected to the bottom of the crushing roller (2). The side wall of the processing box (1) is provided with a discharge port (4), and the end of the guide plate (3) extends to the outside of the discharge port (4). A recycling box (5) is provided at the bottom of the side wall of the discharge port (4). A rack (6) is fixedly connected to the bottom of the outer wall of the guide plate (3). A first electric telescopic rod (7) is installed on the side wall of the processing box (1) at an inclined angle. An installation plate (8) is connected to the output end of the first electric telescopic rod (7). A gear (10) is installed on the installation plate (8). The rack (6) and the gear (10) form a meshing transmission pair. A rotating shaft (9) is connected to the outer wall of the gear (10), and several elastic components are connected to the outer wall of the rotating shaft (9).

2. The pretreatment device for recycled concrete aggregates according to claim 1, characterized in that: The elastic component includes an elastic rod (11) and a rubber ball (12). A plurality of the elastic components are arranged in a circumferential manner around the outer wall of the rotating shaft (9). The elastic rod (11) is connected to the outer wall of the rotating shaft (9), and the rubber ball (12) is installed at the end of the elastic rod (11) away from the rotating shaft (9).

3. The pretreatment device for recycled concrete aggregates according to claim 2, characterized in that: The processing box (1) has a second electric telescopic rod (13) installed at an inclined angle on its side wall. The output end of the second electric telescopic rod (13) is fixed with a first connecting plate (14). The side wall of the first connecting plate (14) is fixed with a second connecting plate (15). The outer wall of the second connecting plate (15) is equipped with an electric push rod (16). The movement trajectories of the second electric telescopic rod (13) and the electric push rod (16) are orthogonal in space. The output end of the electric push rod (16) is fixed with a scraper (17). The side wall of the scraper (17) is fixed with a baffle (18). The scraper (17) can make controllable contact with the upper surface of the inclined guide plate (3) under the coordinated driving action of the second electric telescopic rod (13) and the electric push rod (16).

4. The pretreatment device for recycled concrete aggregates according to claim 3, characterized in that: The processing box (1) has a through groove (19) on its side wall, and a partition (20) is movably connected in the through groove (19). A roller (21) is installed at the bottom of the partition (20).

5. A pretreatment device for recycled concrete aggregates according to claim 4, characterized in that: A protective cover (22) is fixedly installed on the side wall of the processing box (1), and the protective cover (22) is installed on one side of the through groove (19). The protective cover (22) covers the first electric telescopic rod (7) and the second electric telescopic rod (13).

6. The pretreatment device for recycled concrete aggregates according to claim 1, characterized in that: The processing box (1) is equipped with a dust suction hood (23) on one side of the inlet and outlet (4). The outlet of the dust suction hood (23) is connected to a guide pipe (26). The outlet of the guide pipe (26) is equipped with a collection box (24). The outlet of the collection box (24) is equipped with a fan (25).

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