Waste asphalt concrete recycling equipment

Abstract

The invention provides waste asphalt concrete recycling equipment and relates to the technical field of asphalt concrete.The outer surface of a stirring barrel is fixedly connected with a driving motor, the outer surface of the driving motor is sleeved with a rotating shaft, the outer surface of the rotating shaft is sleeved with two first straight gears, and the upper end of the stirring barrel is fixedly connected with a barrel cover; the outer surface of the heating barrel is sleeved with two second straight gears, a stirring rod is rotationally connected into the barrel cover, the outer surface of the stirring rod is sleeved with a connecting frame, the outer surface of the connecting frame is sleeved with two sets of scraping plates, the two first straight gears are driven to rotate when a rotating shaft rotates, and the two first straight gears are meshed to drive the two second straight gears to rotate; the heated barrel is driven by a second straight gear to rotate in the opposite direction, the inner wall of the heated barrel is scraped and cleaned through a scraping plate under driving in the opposite rotating direction, and the situation that asphalt concrete is adhered to the inner wall of the heated barrel after viscosity is recovered, and cleaning is difficult is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of asphalt concrete, and more specifically, particularly relates to a waste asphalt concrete recycling device. Background Art

[0002] Waste asphalt concrete recycling equipment is of great significance in the field of road construction and maintenance. It can process waste asphalt concrete, realize resource reuse, reduce the demand for new raw materials, reduce construction costs, and reduce the pressure of waste on the environment. This equipment is mainly used in road maintenance engineering sites, asphalt concrete mixing plants and related waste treatment sites. The current device usually requires the following technologies in practical applications:

[0003] 1. Advanced heating system ensures that the asphalt is evenly heated and softened;

[0004] 2. Powerful stirring mechanism to fully mix asphalt and stone;

[0005] 3. Intelligent control system to realize automatic operation and monitoring.

[0006] At present, a variety of equipment and methods are used to recycle waste asphalt concrete. Some manufacturers use intermittent recycling equipment, which first performs heating and mixing processes, and then concentrates on processing a batch of materials. Other manufacturers use continuous recycling equipment, in which each process is carried out continuously, which improves production efficiency.

[0007] However, there is a prominent problem in the above method. First, when the existing device is rotating and stirring the asphalt concrete, the function of the stirring rod is relatively single, and there is a lack of cleaning mechanism during stirring. Due to the structural characteristics of asphalt concrete, when it is continuously heated, the asphalt concrete will produce a certain viscosity and adhere to the inner wall of the mixing barrel. After the processing is completed, the mixing barrel needs to be cleaned immediately. Cleaning the mixing barrel takes time, which reduces the overall production efficiency of the equipment. Frequent cleaning work requires manpower and material resources, which increases production costs.

[0008] Secondly, after heating and stirring, in order to reduce the volume occupied by asphalt concrete, it is usually necessary to compress it. Existing equipment usually divides it into two processing steps, which not only increases the complexity and time cost of the production process, resulting in low overall production efficiency, but also the two steps need to be equipped with corresponding work areas respectively, which will occupy more production space.

[0009] In view of this, the existing structure and deficiencies are studied and improved, and a waste asphalt concrete recycling equipment is provided to achieve a more practical purpose. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a waste asphalt concrete recycling device to solve the above problems.

[0011] A waste asphalt concrete recycling device comprises a mixing barrel, the outer surface of the mixing barrel is fixedly connected to a driving motor, the outer surface of the driving motor is sleeved with a rotating shaft, the outer surface of the rotating shaft is sleeved with two first straight gears, the upper end of the mixing barrel is fixedly connected to a barrel cover, the mixing barrel is provided with a recycling and processing mechanism for placing asphalt concrete, the recycling and processing mechanism comprises a heating barrel, the heating barrel is rotatably connected to the inside of the mixing barrel, the outer surface of the heating barrel is sleeved with two second straight gears, the two second straight gears are respectively meshed with the two first straight gears, and the barrel cover is provided with a mixing asphalt concrete recycling mechanism. The mixing mechanism of green concrete comprises a mixing rod, the mixing rod is rotatably connected to the inside of a barrel cover, the mixing rod is rotatably connected to the inside of a heated barrel, a cleaning mechanism for scraping is arranged on the outer surface of the mixing rod, the cleaning mechanism comprises a connecting frame and two groups of scrapers, the connecting frame is sleeved on the outer surface of the mixing rod, the two groups of scrapers are sleeved on the outer surface of the connecting frame, the two groups of scrapers are in contact with the inner wall of the heated barrel, the rotating shaft and the outer surface of the mixing rod are sleeved with a driving mechanism, the driving mechanism comprises two synchronous wheels, the two synchronous wheels are respectively sleeved on the rotating shaft and the outer surface of the mixing rod.

[0012] Preferably, a synchronous belt is sleeved on the outer surfaces of the two synchronous wheels, and a feeding pipe is fixedly connected to the upper end of the barrel cover.

[0013] Preferably, a discharge pipe is fixedly connected to the lower end of the stirring barrel, and a spiral conveying rod is sleeved on the outer surface of the stirring rod.

[0014] Preferably, an L-shaped baffle is fixedly connected to the outer surface of the mixing barrel.

[0015] Preferably, a connecting ring is sleeved on the outer surface of the connecting frame, and a group of external threads are arranged on the outer surface of the connecting frame.

[0016] Preferably, the outer surfaces of the two groups of scrapers are fixedly connected with elastic clamps, and the stirring rod and the interior of the connecting frame are threadedly connected with a group of bolts.

[0017] Preferably, two electric heaters are fixedly connected to the outer surface of the mixing barrel, and a base is fixedly connected to the lower end of the mixing barrel.

[0018] Preferably, hydraulic push rods are fixedly connected to both sides of the base, and push plates are fixedly connected to the sides of the hydraulic push rods that are close to each other.

[0019] Preferably, a bottom plate is slidably connected inside the feeding tube, and sliders are fixed on both sides of the bottom plate.

[0020] Preferably, a slide groove is provided inside the base, and a collecting plate is provided inside the base.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the present invention, a scraper is provided. After the material is loaded, the driving motor is started. The output shaft of the driving motor drives the rotating shaft to rotate. The rotating shaft drives a synchronous wheel to rotate. The two synchronous wheels generate the same rotation direction through the synchronous belt transmission to drive the stirring rod to rotate in the heated barrel. The stirring rod is used to stir the waste asphalt concrete during the heating operation. When the rotating shaft rotates, it will drive the two first spur gears to rotate. The two first spur gears are engaged to drive the two second spur gears to rotate. The heated barrel is driven to rotate by the second spur gears. Since the engagement of the first spur gears and the second spur gears will produce opposite rotation directions, a more complex flow pattern can be formed, so that the material is stirred in different directions, thereby mixing more fully, and improving the uniformity and efficiency of stirring. The rotation of the stirring rod drives the scraper to rotate in the heated barrel. There is a small gap between the scraper and the inner wall of the stirring rod. Driven in the opposite rotation direction, the scraper is used to scrape and clean the inner wall of the heated barrel to avoid the asphalt concrete from adhering to the inner wall of the heated barrel after recovering its viscosity, causing difficulty in cleaning, and avoiding the adhered asphalt concrete from affecting the processing quality of subsequent batches, ensuring the consistency of each batch of products, and reducing the difficulty and time of cleaning.

[0023] In the present invention, a second spur gear is provided, and the size of the first spur gear is significantly smaller than that of the second spur gear, thereby generating a reduced meshing transmission ratio. The rotating shaft quickly drives the stirring rod to rotate for stirring and mixing through a synchronous wheel and a synchronous belt. The heating barrel is driven to rotate in the opposite direction at a slow speed through the meshing of the first spur gear, thereby preventing the heating barrel from rotating rapidly and making it difficult for the heat generated by the electric heater to be transferred to the asphalt concrete. Under the premise of not affecting the heat transfer, the stirring rod is quickly driven to rotate for stirring and mixing, thereby improving the uniformity and efficiency of heating.

[0024] In the present invention, by providing a connecting frame and connecting in a manner of connecting rings, bolts, and elastic clamps, the stirring rod, the connecting frame, and the scraper can be individually disassembled and replaced to improve the convenience of disassembly, and they can be disassembled individually to improve the replaceability of the device, avoiding the need to disassemble the entire part for replacement and maintenance when a single component is worn or damaged, which is beneficial to saving production costs and extending the service life of the device.

[0025] In the present invention, a spiral conveying rod is provided. When the stirring rod rotates to perform stirring and mixing operations, the heated barrel drives the spiral conveying rod to rotate in the discharge pipe. The discharge pipe contains an electromagnetic valve. The opening and closing of the discharge pipe is controlled by the electromagnetic valve. After the heating and stirring are completed, the discharge pipe is opened. When the stirring rod drives the spiral conveying rod to rotate, the asphalt concrete is spirally conveyed along the spiral conveying rod for discharge. The rotating spiral conveying rod can avoid accumulation and blockage during discharge, thereby ensuring smooth discharge operation.

[0026] In the present invention, by providing a push plate, the asphalt concrete after the heated and stirred processing is discharged into the base, and at this time, the hydraulic push rods connected to the two sides of the base are started, and the two hydraulic push rods are placed opposite to each other, and the output shafts thereof are both facing the center of the base. The output shafts of the two hydraulic push rods extend out to drive the two push plates to slide, and the two push plates slide to fit and compress the asphalt concrete in the base, and quickly compress the discharged asphalt concrete, thereby reducing the waiting and subsequent processing time, speeding up the entire production process, making the internal structure of the asphalt concrete tighter, saving the space occupied by subsequent transportation and processing, and making more effective use of storage space and transportation resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the connection structure of the electric heater of the present invention;

[0029] Figure 3 is an exploded view of the L-shaped baffle connection of the present invention;

[0030] Figure 4 It is an exploded view of the connection of the mixing barrel of the present invention;

[0031] Figure 5 It is an exploded view of the connection of the heated barrel of the present invention;

[0032] Figure 6 It is a schematic diagram of the connection structure of the spiral conveying rod of the present invention;

[0033] Figure 7 It is a schematic diagram of the stirring rod connection structure of the present invention;

[0034] Figure 8 It is a schematic diagram of the connection structure of the connection frame of the present invention;

[0035] Fig. 9 is an exploded view of the baffle connection of the present invention;

[0036] Fig.10 It is an exploded view of the push plate connection of the present invention.

[0037] In the figure, the corresponding relationship between the component names and the figure numbers is: 11, mixing barrel; 12, driving motor; 13, rotating shaft; 14, first spur gear; 15, barrel cover; 16, heating barrel; 17, second spur gear; 18, stirring rod; 19, connecting frame; 21, scraper; 22, synchronous wheel; 23, synchronous belt; 24, feeding pipe; 25, discharge pipe; 26, spiral conveying rod; 27, L-shaped baffle; 28, connecting ring; 29, external thread; 31, elastic clamp; 32, bolt; 33, electric heater; 34, base; 35, hydraulic push rod; 36, push plate; 37, bottom plate; 38, slider; 39, slide chute; 41, collecting plate. DETAILED DESCRIPTION

[0038] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] Embodiment 1:

[0040] See also Figure 1-Figure 10 The present invention provides a waste asphalt concrete recycling equipment, including a mixing barrel 11, a driving motor 12 is fixedly connected to the outer surface of the mixing barrel 11, a rotating shaft 13 is sleeved on the outer surface of the driving motor 12, two first straight gears 14 are sleeved on the outer surface of the rotating shaft 13, a barrel cover 15 is fixedly connected to the upper end of the mixing barrel 11, a recycling and processing mechanism for placing asphalt concrete is arranged inside the mixing barrel 11, the recycling and processing mechanism includes a heating barrel 16, the heating barrel 16 is rotatably connected to the inside of the mixing barrel 11, two second straight gears 17 are sleeved on the outer surface of the heating barrel 16, the two second straight gears 17 are respectively meshed with the two first straight gears 14, a stirring mechanism for stirring asphalt concrete is arranged inside the barrel cover 15, the stirring mechanism includes a stirring rod 18, the stirring rod 18 is rotatably connected to the inside of the barrel cover 15, the stirring rod 18 is rotatably connected to the inside of the heating barrel 16, and a cleaning mechanism for scraping is arranged on the outer surface of the stirring rod 18;

[0041] The cleaning mechanism includes a connecting frame 19 and two groups of scrapers 21. The connecting frame 19 is sleeved on the outer surface of the stirring rod 18. The two groups of scrapers 21 are sleeved on the outer surface of the connecting frame 19. The two groups of scrapers 21 are both in contact with the inner wall of the heated barrel 16. The outer surfaces of the rotating shaft 13 and the stirring rod 18 are sleeved with a driving mechanism. The driving mechanism includes two synchronous wheels 22. The two synchronous wheels 22 are respectively sleeved on the outer surfaces of the rotating shaft 13 and the stirring rod 18. The outer surfaces of the two synchronous wheels 22 are sleeved with a synchronous belt 23. After the material is loaded, the driving motor 12 is started, and the output shaft of the driving motor 12 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives a synchronous wheel 22 The two synchronous wheels 22 generate the same rotation direction through the synchronous belt 23 to drive the stirring rod 18 to rotate in the heated barrel 16. The stirring rod 18 stirs the waste asphalt concrete during the heating operation. When the rotating shaft 13 rotates, it will drive the two first spur gears 14 to rotate. The two first spur gears 14 are engaged to drive the two second spur gears 17 to rotate. The heated barrel 16 is driven to rotate through the second spur gears 17. Since the first spur gears 14 and the second spur gears 17 are engaged, the opposite rotation direction will be generated. When the stirring and mixing operation is performed, the heated barrel 16 and the stirring rod 18 are driven to rotate in opposite directions.

[0042] The rotation of the stirring rod 18 drives the scraper 21 to rotate in the heated barrel 16. There is a small gap between the scraper 21 and the inner wall of the stirring rod 18. Driven in the opposite direction of rotation, the scraper 21 scrapes and cleans the inner wall of the heated barrel 16 to prevent the asphalt concrete from adhering to the inner wall of the heated barrel 16 after regaining its viscosity, making it difficult to clean.

[0043] A feeding pipe 24 is fixedly connected to the upper end of the barrel cover 15, a discharge pipe 25 is fixedly connected to the lower end of the mixing barrel 11, a spiral conveying rod 26 is sleeved on the outer surface of the mixing rod 18, and the spiral conveying rod 26 is rotatably connected to the inside of the discharge pipe 25, an L-shaped baffle 27 is fixedly connected to the outer surface of the mixing barrel 11, and the L-shaped baffle 27 is sleeved on the outer surfaces of the driving motor 12 and the rotating shaft 13, a connecting ring 28 is sleeved on the outer surface of the connecting frame 19, a group of external threads 29 are provided on the outer surface of the connecting frame 19, and the connecting ring 28 is threadedly connected to the outer surface of the external threads 29, the outer surfaces of the two groups of scrapers 21 are fixedly connected to elastic clamps 31, and the two groups of elastic clamps 31 are sleeved on the outer surface of the connecting frame 19, and a group of bolts 32 are threadedly connected inside the mixing rod 18 and the connecting frame 19;

[0044] The L-shaped baffle 27 installed outside the mixing barrel 11 can shield and protect the driving motor 12, the rotating shaft 13, the first spur gear 14, the synchronous wheel 22, and the synchronous belt 23 to prevent the fast-rotating first spur gear 14 from causing harm to the staff. The size of the first spur gear 14 is significantly smaller than that of the second spur gear 17, resulting in a decelerated meshing transmission ratio. The rotating shaft 13 quickly drives the stirring rod 18 to rotate for stirring and mixing through the synchronous wheel 22 and the synchronous belt 23. The first spur gear 14 meshes and slowly drives the heated barrel 16 to rotate in the opposite direction to prevent the heated barrel 16 from rotating rapidly and making it difficult for the heat generated by the electric heater 33 to be transferred to the asphalt concrete. Under the premise of not affecting the heat transfer, the stirring rod 18 is quickly driven to rotate for stirring and mixing. When the stirring rod 18 rotates for stirring and mixing, the heated barrel 16 drives the spiral conveying rod 26 to rotate in the discharge pipe 25. The discharge pipe 25 contains an electromagnetic valve, and the opening and closing of the discharge pipe 25 is controlled by the electromagnetic valve. After the heating and stirring are completed, the discharge pipe 25 is opened;

[0045] When the stirring rod 18 drives the spiral conveying rod 26 to rotate, the asphalt concrete is spirally conveyed along the spiral conveying rod 26 for unloading. The rotating spiral conveying rod 26 can avoid accumulation and blockage during unloading, thereby ensuring smooth unloading operation. When installing the connecting frame 19, the connecting frame 19 is sleeved on the surface of the stirring rod 18 from top to bottom. At this time, a group of bolts 32 are passed through the connecting frame 19 and screwed into the stirring rod 18 to connect and fix it. After the connection is completed, the connecting ring 28 is sleeved on the lower end surface of the connecting frame 19 from bottom to top. A circular through hole is provided in the connecting ring 28, and its inner diameter is larger than the spiral conveying rod 26, so there will be no obstruction. The connecting ring 28 is screwed along the surface of the external thread 29, and the connection method of the bolts 32 and the connecting ring 28 is used. The method ensures the stable connection between the stirring rod 18 and the connecting frame 19. The elastic clamp 31 connected inside the scraper 21 is made of spring sheet material, which is elastic and can be deformed to a certain extent. The elastic clamp 31 is bent to make it fit on the surface of the connecting frame 19, and the screw is passed through the elastic clamp 31 and screwed into the connecting frame 19 to install and fix it. Through the connection method of the connecting ring 28, the bolt 32, and the elastic clamp 31, the stirring rod 18, the connecting frame 19, and the scraper 21 can be individually disassembled and replaced to improve the convenience of disassembly, and they can be disassembled separately to improve the replaceability of the device, avoid the need to disassemble the entire component for replacement and maintenance when a single component is worn or damaged, which is beneficial to saving production costs and extending the service life of the device.

[0046] Two electric heaters 33 are fixedly connected to the outer surface of the mixing barrel 11. Asphalt concrete waste, aggregates, additives, etc. are put into the mixing barrel 11 through the feeding pipe 24, and the waste falls vertically into the heating barrel 16 set in the mixing barrel 11. The waste asphalt concrete, aggregates, additives, etc. are stirred and mixed by the rotating stirring rod 18. During the heating and stirring operation, the moisture in the waste asphalt concrete is evaporated, and its certain bonding performance is restored, so that it can be better combined with the newly added aggregates and additives, and the aged asphalt is activated, and its performance indicators such as viscosity and elongation are improved, so as to improve the quality of the recycled material, so that the recycled waste asphalt concrete can be reused, which saves resources and improves the utilization efficiency of asphalt concrete. The asphalt concrete material after heating and stirring is discharged through the discharge pipe 25. When the stirring process is carried out, the two electric heaters 33 installed on the surface of the mixing barrel 11 are started. The mixing barrel 11 and the heating barrel 16 are both heat-conducting materials, which can reduce the loss of heat and conduct heat to the heating barrel 16.

[0047] Working principle:

[0048] In the first step, asphalt concrete waste, aggregates, additives, etc. are put into the mixing barrel 11 through the feeding pipe 24, and the waste falls vertically into the heated barrel 16 set in the mixing barrel 11. The waste asphalt concrete, aggregates, additives, etc. are stirred and mixed by the rotating stirring rod 18. During the heating and stirring operation, the moisture in the waste asphalt concrete is evaporated, and its certain bonding properties are restored, so that it can be better combined with the newly added aggregates and additives, activating the aged asphalt, improving its performance indicators such as viscosity and elongation, and improving the quality of the recycled material, so that the recycled waste asphalt concrete can be reused, saving resources and improving the utilization efficiency of asphalt concrete. The asphalt concrete material after heating and stirring is discharged through the discharge pipe 25.

[0049] In the second step, when the mixing process is carried out, the two electric heaters 33 installed on the surface of the mixing barrel 11 are started. The mixing barrel 11 and the heated barrel 16 are both made of heat-conducting materials, which can reduce the loss of heat and transfer it to the heated barrel 16. After the material is loaded, the drive motor 12 is started, and the output shaft of the drive motor 12 drives the rotating shaft 13 to rotate, and the rotating shaft 13 drives a synchronous wheel 22 to rotate. The two synchronous wheels 22 generate the same rotation direction through the transmission of the synchronous belt 23 to drive the stirring rod 18 to rotate in the heated barrel 16. The stirring rod 18 is used to stir the waste asphalt concrete during the heating operation. When the rotating shaft 13 rotates, it will drive the two first spur gears 14 to rotate. The two first The meshing of the spur gear 14 drives the two second spur gears 17 to rotate, and the second spur gears 17 drive the heated barrel 16 to rotate. Since the meshing of the first spur gear 14 and the second spur gear 17 will produce opposite rotation directions, during the stirring and mixing operation, the heated barrel 16 and the stirring rod 18 are driven to produce opposite rotation directions. The rotation of the stirring rod 18 drives the scraper 21 to rotate in the heated barrel 16. There is a small gap between the scraper 21 and the inner wall of the stirring rod 18. Under the drive of the opposite rotation direction, the scraper 21 is used to scrape and clean the inner wall of the heated barrel 16 to prevent the asphalt concrete from adhering to the inner wall of the heated barrel 16 after it recovers its viscosity, making it difficult to clean.

[0050] In the third step, the L-shaped baffle 27 installed outside the mixing barrel 11 can shield and protect the drive motor 12, the rotating shaft 13, the first spur gear 14, the synchronous wheel 22, and the synchronous belt 23 to prevent the fast-rotating first spur gear 14 from causing harm to the staff. The size of the first spur gear 14 is significantly smaller than the second spur gear 17, resulting in a reduced meshing transmission ratio. The rotating shaft 13 will quickly drive the stirring rod 18 to rotate for stirring and mixing through the synchronous wheel 22 and the synchronous belt 23, and the heated barrel 16 is driven to rotate in the opposite direction at a slow speed through the meshing of the first spur gear 14 to prevent the heated barrel 16 from rotating rapidly and making it difficult for the electric heater 33 to transfer the heat to the asphalt concrete. Under the premise of not affecting the heat transfer, the stirring rod 18 is quickly driven to rotate for stirring and mixing. When the stirring rod 18 rotates for stirring and mixing, the heated barrel 16 is driven The movable screw conveying rod 26 rotates in the discharge pipe 25, and the discharge pipe 25 contains a solenoid valve, which controls the opening and closing of the discharge pipe 25 (the solenoid valve is composed of a solenoid coil, a valve core, a valve body and other components. When the solenoid coil is energized, a magnetic field is generated. The action of the magnetic field enables the valve core to overcome the spring force or other resistance, thereby changing the position of the valve core. The movement of the valve core will open or close the channel inside the discharge pipe 25. When the discharge pipe 25 needs to be opened, the valve core moves to connect the discharge pipe with the material source, and the material can flow out through the discharge pipe). After the heating and stirring are completed, the discharge pipe 25 is opened. When the stirring rod 18 drives the screw conveying rod 26 to rotate, the asphalt concrete is spirally conveyed along the screw conveying rod 26 for discharge. The rotating screw conveying rod 26 can avoid accumulation and blockage during discharge, thereby ensuring smooth discharge operation.

[0051] The fourth step is to install the connecting frame 19, and sleeve the connecting frame 19 on the surface of the stirring rod 18 from top to bottom. At this time, a set of bolts 32 are passed through the connecting frame 19 and screwed into the stirring rod 18 to connect and fix it. After the connection is completed, the connecting ring 28 is sleeved on the lower end surface of the connecting frame 19 from bottom to top. A circular through hole is provided in the connecting ring 28, and its inner diameter is larger than the spiral conveying rod 26, so there will be no obstruction. The connecting ring 28 is screwed along the surface of the external thread 29, and the connection method of the bolts 32 and the connecting ring 28 ensures the stable connection between the stirring rod 18 and the connecting frame 19. The elastic clamp 31 connected in the scraper 21 is a spring The sheet material has elasticity and can be deformed to a certain extent. The elastic clamp 31 is bendable to make it fit on the surface of the connecting frame 19, and the screw is passed through the elastic clamp 31 and screwed into the connecting frame 19 to fix it. Through the connection method of the connecting ring 28, the bolt 32, and the elastic clamp 31, the stirring rod 18, the connecting frame 19, and the scraper 21 can be individually disassembled and replaced to improve the convenience of disassembly, and they can be disassembled separately to improve the replaceability of the device, avoid the need to disassemble the entire part for replacement and maintenance when a single part is worn or damaged, which is beneficial to saving production costs and extending the service life of the device.

[0052] Embodiment 2:

[0053] See also Figure 1-Figure 10 The present invention provides a waste asphalt concrete recycling device, including a mixing barrel 11, a base 34 is fixedly connected to the lower end of the mixing barrel 11, a discharge pipe 25 is sleeved inside the base 34, hydraulic push rods 35 are fixedly connected to both sides of the base 34, and push plates 36 are fixedly connected to the sides of the hydraulic push rods 35 close to each other, and the two push plates 36 are on the same horizontal line. The asphalt concrete after the heated and stirred processing is discharged into the base 34, and the hydraulic push rods 35 connected to both sides of the base 34 are started. The two hydraulic push rods 35 are placed opposite to each other, and their output shafts are both facing the center of the base 34. The output shafts of the two hydraulic push rods 35 extend to drive the two push plates 36 to slide, and the two push plates 36 slide to fit and compress the asphalt concrete in the base 34.

[0054] A bottom plate 37 is slidably connected inside the feeding tube 24, and sliders 38 are fixed on both sides of the bottom plate 37. A slide groove 39 is opened inside the base 34, and two sliders 38 are slidably connected inside the slide groove 39. After the compression of the green concrete is completed, the bottom plate 37 is pulled out, and the bottom plate 37 slides in the slide groove 39 through the slider 38 connected to its surface. The slide groove 39 limits the sliding trajectory of the slider 38 and provides it with a smoother sliding effect.

[0055] A collecting plate 41 is provided inside the base 34. The collecting plate 41 and the bottom plate 37 are on the same vertical line. The asphalt concrete falls vertically downward onto the collecting plate 41. By pulling the collecting plate 41, the dry, stirred, mixed and compressed asphalt concrete can be discharged for subsequent use.

[0056] Working principle:

[0057] In the first step, the asphalt concrete that has been heated and stirred is discharged into the base 34. At this time, the hydraulic push rods 35 connected to both sides of the base 34 are started. The two hydraulic push rods 35 are placed opposite to each other, and their output shafts are both facing the center of the base 34. The output shafts of the two hydraulic push rods 35 extend to drive the two push plates 36 to slide. The two push plates 36 slide to fit and compress the asphalt concrete in the base 34.

[0058] In the second step, after the asphalt concrete is compressed, the bottom plate 37 is pulled out, and the bottom plate 37 slides in the slide groove 39 through the slider 38 connected to its surface. The slide groove 39 limits the sliding trajectory of the slider 38 and provides it with a smoother sliding effect. The asphalt concrete falls vertically downward onto the collecting plate 41. By pulling the collecting plate 41, the dry, stirred, mixed and compressed asphalt concrete can be discharged for subsequent use.

[0059] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A waste asphalt concrete recycling device, comprising a mixing barrel (11), wherein a driving motor (12) is fixedly connected to the outer surface of the mixing barrel (11), characterized in that: The outer surface of the driving motor (12) is sleeved with a rotating shaft (13), and the outer surface of the rotating shaft (13) is sleeved with two first straight gears (14); the upper end of the mixing barrel (11) is fixedly connected with a barrel cover (15), and the interior of the mixing barrel (11) is provided with a recycling and processing mechanism for placing asphalt concrete; The recycling mechanism comprises a heated barrel (16), the heated barrel (16) is rotatably connected to the inside of the mixing barrel (11), the outer surface of the heated barrel (16) is sleeved with two second spur gears (17), the two second spur gears (17) are respectively meshed with the two first spur gears (14), and the barrel cover (15) is provided with a stirring mechanism for stirring asphalt concrete; The stirring mechanism comprises a stirring rod (18), the stirring rod (18) is rotatably connected to the inside of the barrel cover (15), the stirring rod (18) is rotatably connected to the inside of the heated barrel (16), and the outer surface of the stirring rod (18) is provided with a cleaning mechanism for scraping; The cleaning mechanism comprises a connecting frame (19) and two groups of scrapers (21), wherein the connecting frame (19) is sleeved on the outer surface of the stirring rod (18), and the two groups of scrapers (21) are sleeved on the outer surface of the connecting frame (19), and the two groups of scrapers (21) are in contact with the inner wall of the heating barrel (16); The outer surfaces of the rotating shaft (13) and the stirring rod (18) are both sleeved with a driving mechanism; The driving mechanism comprises two synchronous wheels (22), and the two synchronous wheels (22) are respectively sleeved on the outer surface of the rotating shaft (13) and the stirring rod (18).

2. A waste asphalt concrete recycling equipment as claimed in claim 1, characterized in that: The outer surfaces of the two synchronous wheels (22) are sleeved with synchronous belts (23); Wherein, a feeding pipe (24) is fixedly connected to the upper end of the barrel cover (15).

3. A waste asphalt concrete recycling equipment as claimed in claim 2, characterized in that: A discharge pipe (25) is fixedly connected to the lower end of the mixing barrel (11); Wherein, a spiral conveying rod (26) is sleeved on the outer surface of the stirring rod (18), and the spiral conveying rod (26) is rotatably connected to the inside of the discharge pipe (25).

4. A waste asphalt concrete recycling equipment as claimed in claim 3, characterized in that: An L-shaped baffle (27) is fixedly connected to the outer surface of the mixing barrel (11); Wherein, the L-shaped baffle (27) is sleeved on the outer surface of the driving motor (12) and the rotating shaft (13).

5. A waste asphalt concrete recycling equipment as claimed in claim 4, characterized in that: The outer surface of the connecting frame (19) is sleeved with a connecting ring (28); The outer surface of the connecting frame (19) is provided with a group of external threads (29), and the connecting ring (28) is threadedly connected to the outer surface of the external threads (29).

6. A waste asphalt concrete recycling equipment as claimed in claim 5, characterized in that: The outer surfaces of the two groups of scrapers (21) are fixedly connected with elastic clamps (31), and the two groups of elastic clamps (31) are sleeved on the outer surface of the connecting frame (19); Wherein, a group of bolts (32) are threadedly connected inside the stirring rod (18) and the connecting frame (19).

7. A waste asphalt concrete recycling equipment as claimed in claim 6, characterized in that: Two electric heaters (33) are fixedly connected to the outer surface of the mixing barrel (11); The lower end of the mixing barrel (11) is fixedly connected to a base (34), and the discharge pipe (25) is sleeved inside the base (34).

8. The waste asphalt concrete recycling equipment as claimed in claim 7, characterized in that: Both sides of the base (34) are fixedly connected with hydraulic push rods (35); Wherein, the sides of the hydraulic push rods (35) that are close to each other are fixedly connected with push plates (36), and the two push plates (36) are on the same horizontal line.

9. A waste asphalt concrete recycling equipment as claimed in claim 8, characterized in that: The feeding tube (24) is slidably connected to a bottom plate (37); Wherein, sliding blocks (38) are fixed on both sides of the bottom plate (37).

10. The waste asphalt concrete recycling equipment as claimed in claim 9, characterized in that: A slide groove (39) is provided inside the base (34), and the two sliders (38) are slidably connected inside the slide groove (39); Wherein, a collecting plate (41) is arranged inside the base (34), and the collecting plate (41) and the bottom plate (37) are located on the same vertical line.

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