Asphalt particle screening device for recycling asphalt
Through the combined device of magnetic separation, crushing and multi-stage screening, the problems of low purity and low efficiency in traditional asphalt screening devices are solved, and efficient and pure asphalt reuse is achieved.
Patent Information
- Application Number
- CN202510874063.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional asphalt particle screening devices have problems such as slow screening speed, limited pore size grading, and metal impurities affecting purity, resulting in low asphalt reuse efficiency.
The magnetic separation device is used to remove metal impurities, the crushing device is used to crush large-grained asphalt, and the multi-stage screening drum is used to perform multi-stage screening, and the harmful components are decomposed with biological enzyme inhibitors, so that the cleaning mechanism prevents blockage.
It improves the purity and efficiency of asphalt reuse, ensures the purity and quality of asphalt, reduces harmful components, and improves screening efficiency and safety.
Smart Images
Figure CN120502382A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of screening devices, and in particular to an asphalt particle screening device for asphalt recycling. Background Art
[0002] With the continuous development of global infrastructure construction and the increasing awareness of environmental protection, the recycling and utilization of asphalt pavements has become a key issue and an inevitable trend in the field of road engineering. A large amount of waste asphalt mixtures is generated during road renovation, milling and maintenance. The effective recycling and reuse of these waste asphalt mixtures can not only significantly reduce the demand for virgin stone and asphalt, reduce energy consumption and carbon emissions in the mining and production processes, but also greatly reduce the amount of landfilled construction waste, which has economic benefits and environmental value. The asphalt particle screening device is a key link in the asphalt recycling industry chain. It converts waste asphalt mixtures with complex sources and different states into "recycled aggregates" with controllable composition, clear gradation and low impurity content, which provides a reliable foundation for subsequent precise mixture design and new material production.
[0003] Traditional devices mostly rely on vibration screening, but asphalt particles are easily agglomerated or clogged due to their viscosity, resulting in slow screening speed. In addition, waste asphalt may contain metal impurities similar to steel bar fragments, which will affect the purity of the asphalt that is ultimately recycled and reused. The aperture classification of traditional screening devices is limited, and the screening efficiency is low. Summary of the Invention
[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an asphalt particle screening device for asphalt recycling, comprising a working platform, a magnetic separation device fixedly connected to the top of the working platform, a crushing device fixedly connected to the top of the working platform on one side of the magnetic separation device, a screening device fixedly connected to the top of the working platform on the side of the crushing device, and an asphalt recovery box fixedly connected to the top of the working platform below the screening device.
[0005] Preferably, the magnetic separation device includes a first bracket, the inner wall of the first bracket is fixedly connected to a belt conveyor, the input end of the belt conveyor is fixedly connected to the drive shaft of the first motor, the output end of the belt conveyor is penetrated by and rotatably connected to a magnetic separation drum, the inner wall of the magnetic separation drum is fixedly connected to a magnetic attraction ring, both ends of the magnetic separation drum are rotatably connected to the first bracket, the parts of the inner wall of the first bracket close to the magnetic separation drum are fixedly connected to inclined guide plates, the inclined guide plates are located below the magnetic separation drum, the inner walls of the first bracket are fixedly connected to metal recovery boxes, the first bracket is fixedly connected to the top of the working platform, the metal recovery box is fixedly connected to the top of the working platform, and metal impurities similar to steel bar fragments can be removed by magnetic attraction, thereby ensuring the purity of the recycled asphalt.
[0006] Preferably, the crushing device includes a crushing box, a fixing mechanism is fixedly connected to the top of the crushing box, a second motor is fixedly connected to one side of the crushing box, a driving shaft of the second motor passes through the crushing box and is fixedly connected to a rotating column, the end of the rotating column away from the second motor is rotatably connected to the crushing box, a crushing tooth roller is fixedly connected to the side of the rotating column, the top of the crushing box is connected to a discharge port, the bottom of the discharge port is fixedly connected to a second bracket, the second bracket is fixedly connected to the top of the working platform, and the crushing box is located below the magnetic separation cylinder.
[0007] Preferably, the fixing mechanism includes a third bracket, the top of the third bracket is fixedly connected to a fixed beam, the bottom of the fixed beam is fixedly connected to a pneumatic piston rod, the bottom of the pneumatic piston rod is fixedly connected to a fixed protective plate, and the third bracket is fixedly connected to the top of the crushing box.
[0008] Preferably, the screening device includes a feed box, the top of the feed box is connected to a protective shell, the top of the protective shell is fixedly connected to a purification mechanism, the bottom of the feed box is fixedly connected to a fourth bracket, the side of the feed box is fixedly connected to a third motor, the driving shaft of the third motor passes through the feed box and is fixedly connected to the first rotating rod, the first rotating rod is sleeved and fixedly connected to a spiral feeding plate, the end of the first rotating rod away from the third motor is fixedly connected to the second rotating rod, the side of the second rotating rod is fixedly connected to the rotating tool holder, one end of the second rotating rod is rotatably connected to the screening drum, and the sides of the screening drum are evenly provided with first screening The first screening hole, the second screening hole and the third screening hole are fixedly connected to the inner wall of the screening drum; the screening drum is sleeved and rotatably connected with a screening shell; the bottom of the screening shell is respectively penetrated and fixedly connected with the first discharge nozzle, the second discharge nozzle and the third discharge nozzle; the two ends of the bottom of the screening shell are fixedly connected with the fifth bracket; the end of the screening drum away from the feed box is fixedly connected with a driven gear; the side of the driven gear is meshed with a driving gear; the side of the driving gear is fixedly connected with the driving shaft of the fourth motor; the fourth motor is fixedly connected to the side of the fifth bracket; screening holes with different apertures are opened on the screening drum for multi-stage screening, thereby improving the screening efficiency.
[0009] Preferably, the fourth bracket is fixedly connected to the top of the working platform, the fifth bracket is fixedly connected to the top of the working platform, the aperture of the first sieve hole is smaller than that of the second sieve hole, the aperture of the second sieve hole is smaller than that of the third sieve hole, the first discharge nozzle, the second discharge nozzle and the third discharge nozzle are respectively located below the first sieve hole, the second sieve hole and the third sieve hole area, and the three asphalt recovery boxes are respectively located below the first discharge nozzle, the second discharge nozzle and the third discharge nozzle.
[0010] Preferably, the purification mechanism includes a bio-enzyme inhibitor storage box, one side of the bio-enzyme inhibitor storage box is connected to the water inlet of a high-pressure water pump, the water outlet of the high-pressure water pump is connected to a water pipe, the water pipe passes through the protective shell and extends to one end inside the protective shell and is connected to a spray head, the bio-enzyme inhibitor storage box is fixedly connected to the top of the protective shell, and can efficiently decompose harmful components in waste asphalt, such as sulfides, nitrogen oxides, etc., while releasing a fresh natural fragrance, effectively neutralizing and removing odors.
[0011] Preferably, the cleaning mechanism includes a circular slide, the side of the circular slide is slidably connected to an electric slider, the side of the electric slider is fixedly connected to a connecting rod, the side of the connecting rod is fixedly connected to a cleaning brush, and the circular slide is fixedly connected to the inner wall of the screening drum.
[0012] The present invention provides an asphalt particle screening device for asphalt recycling, which has the following beneficial effects: 1. When using the asphalt particle screening device for asphalt recycling, the user places the old waste asphalt on the belt conveyor, the first motor is started, and the drive shaft of the first motor rotates to drive the belt conveyor to transport the old waste asphalt. When the old waste asphalt is conveyed to the output end of the belt conveyor, due to the magnetic attraction force of the magnetic attraction ring in the magnetic separation cylinder at the output end of the belt conveyor, the metal in the old waste asphalt is adsorbed on the belt of the belt conveyor, while the non-metallic old waste asphalt can pass directly through the output end. When the adsorbed metal material passes through the bottom of the belt conveyor, the magnetic attraction gradually weakens due to the increasing transmission distance, and then falls on the inclined guide plate and finally falls into the metal recovery box, thereby achieving the purpose of metal recovery and improving the purity of the recycled asphalt.
[0013] 2. When the asphalt particle screening device for asphalt recycling is used, the old waste asphalt is screened by the magnetic separation device and falls into the crushing box. The second motor is started, and the drive shaft of the second motor rotates to drive the rotating column to rotate. The rotation of the rotating column drives the crushing gear roller to rotate. Since two sets of crushing gear rollers with opposite rotation directions are provided, larger solid asphalt can be crushed. When the solid asphalt is crushed, the asphalt will rotate with the rotation of the crushing gear roller. Some solid asphalt may not be completely crushed due to the rotation, so the pneumatic piston rod moves up and down, and the movement of the pneumatic piston rod drives the fixed protective plate to move up and down. When the fixed protective plate moves to the appropriate position below, it squeezes the solid asphalt and is crushed at the same time with the crushing gear roller. After complete crushing, it is finally discharged from the discharge port, thereby improving the crushing efficiency.
[0014] 3. The asphalt particle screening device for asphalt recycling, when in use, the crushed old waste asphalt is discharged into the feed box from the discharge port, the third motor is started, the drive shaft of the third motor rotates to drive the first rotating rod to rotate, the rotation of the first rotating rod drives the second rotating rod to rotate, the rotation of the first rotating rod drives the spiral feeding plate to rotate, the rotation of the spiral feeding plate drives the old waste asphalt inside the feed box to be transferred to the inside of the screening drum for screening, the rotation of the second rotating rod drives the rotating knife holder to rotate, the rotation of the rotating knife holder inside the screening drum can perform secondary crushing of the old waste asphalt, thereby improving the yield of fine asphalt, the fourth motor is started, the drive shaft of the fourth motor rotates to drive the driving gear to rotate, the rotation of the driving gear drives the driven gear to rotate, the rotation of the driven gear drives the screening drum to rotate, the asphalt inside the screening drum is thrown to the edge under the action of the centrifugal force of the rotation of the screening drum, and then the asphalt particles of different particle sizes are screened out through the first screening hole, the second screening hole, and the third screening hole, and finally fall into the asphalt recovery box, so that it can be screened through multiple screening holes, thereby improving the screening efficiency.
[0015] 4. When the asphalt particle screening device for asphalt recycling is used, when the old waste asphalt falls into the feed box, the high-pressure water pump is started, and the bioenzyme preparation inside the bioenzyme inhibitor storage box is pumped into the water pipe. The bioenzyme preparation in the water pipe flows into the spray head, and finally the old waste asphalt inside the feed box is sprayed. The bioenzyme preparation can efficiently decompose harmful components in the waste asphalt, such as sulfides, nitrogen oxides, etc., while releasing a fresh natural fragrance, effectively neutralizing and removing odors, thereby obtaining green and odorless recycled asphalt, effectively protecting the environment.
[0016] 5. When the asphalt particle screening device for asphalt recycling is used, when residual asphalt is adhered to the inner wall of the screening drum, the electric slider is started and can slide on the circular slide. The sliding of the electric slider drives the connecting rod to slide around the center of the circular slide. The sliding of the connecting rod drives the cleaning brush to slide on the inner wall of the screening drum, thereby cleaning the asphalt adhered to the inner wall of the screening drum, avoiding asphalt clogging the screening drum and improving the screening efficiency of the asphalt. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of an asphalt particle screening device for asphalt recycling according to the present invention; Figure 2 Schematic diagram of the structure of the magnetic separation device of the present invention; Figure 3 This is a schematic diagram of the internal structure of the magnetic separation cylinder of the present invention; Figure 4 This is a schematic structural diagram of the crushing device of the present invention; Figure 5 This is a schematic diagram of the side structure of the crushing device of the present invention; Figure 6 This is a structural diagram of the fixing mechanism of the present invention; Figure 7 Schematic diagram of the structure of the screening device of the present invention; Figure 8 Schematic diagram of the internal structure of the screening device of the present invention; Figure 9 This is a schematic diagram of the internal structure of the screening drum of the present invention; Figure 10 It is a schematic structural diagram of the purification mechanism of the present invention; Figure 11 It is a schematic structural diagram of the cleaning mechanism of the present invention.
[0018] In the figure: 1. working platform; 2. magnetic separation device; 3. crushing device; 4. screening device; 5. asphalt recovery box; 21. first bracket; 22. belt conveyor; 23. first motor; 24. magnetic separation drum; 25. magnetic suction ring; 26. inclined guide plate; 27. metal recovery box; 31. crushing box; 32. fixing mechanism; 33. second motor; 34. rotating column; 35. crushing gear roller; 36. discharge port; 37. second bracket; 321. third bracket; 322. fixed beam; 323. pneumatic piston rod; 324. fixed protective plate; 41. feed box; 42. protective shell; 43. purification mechanism; 44. fourth bracket; 45. third motor; 46. First rotating rod; 47, spiral feed plate; 48, second rotating rod; 49, screening drum; 410, first screening hole; 411, second screening hole; 412, third screening hole; 413, cleaning mechanism; 414, screening housing; 415, first discharging nozzle; 416, second discharging nozzle; 417, third discharging nozzle; 418, driven gear; 419, driving gear; 420, fifth bracket; 421, fourth motor; 422, rotating tool holder; 431, bio-enzyme inhibitor storage box; 432, high-pressure water pump; 433, water pipe; 434, spray head; 4131, circular slide; 4132, electric slider; 4133, connecting rod; 4134, cleaning brush. DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] See also Figure 1-Figure 3The present invention provides a technical solution: an asphalt particle screening device for asphalt recycling, comprising a working platform 1, a magnetic separation device 2 fixedly connected to the top of the working platform 1, a crushing device 3 fixedly connected to the part of the top of the working platform 1 located on one side of the magnetic separation device 2, a screening device 4 fixedly connected to the part of the top of the working platform 1 located on one side of the crushing device 3, an asphalt recovery box 5 fixedly connected to the position below the screening device 4 on the top of the working platform 1, the magnetic separation device 2 comprises a first bracket 21, a belt conveyor 22 fixedly connected to the inner wall of the first bracket 21, and an input of the belt conveyor 22 The end is fixedly connected to the driving shaft of the first motor 23, and the output end of the belt conveyor 22 is penetrated by and rotatably connected to the magnetic separation drum 24. The inner wall of the magnetic separation drum 24 is fixedly connected to the magnetic attraction ring 25. Both ends of the magnetic separation drum 24 are rotatably connected to the first bracket 21. The parts of the inner wall of the first bracket 21 close to the magnetic separation drum 24 are fixedly connected to the inclined guide plates 26. The inclined guide plates 26 are located below the magnetic separation drum 24. Metal recovery boxes 27 are fixedly connected to both sides of the inner wall of the first bracket 21. The first bracket 21 is fixedly connected to the top of the working platform 1, and the metal recovery box 27 is fixedly connected to the top of the working platform 1.
[0021] During use, the user places the old waste asphalt on the belt conveyor 22, the first motor 23 is started, and the drive shaft of the first motor 23 rotates to drive the belt conveyor 22 to convey the old waste asphalt. When the old waste asphalt is conveyed to the output end of the belt conveyor 22, due to the magnetic attraction force of the magnetic ring 25 in the magnetic separation cylinder 24 at the output end of the belt conveyor 22, the metal in the old waste asphalt is adsorbed on the belt of the belt conveyor 22, while the non-metallic old waste asphalt can pass directly through the output end. When the adsorbed metal material passes through the bottom of the belt conveyor 22, the magnetic attraction gradually weakens due to the increasing transmission distance, and then falls on the inclined guide plate 26, and finally falls into the metal recovery box 27, thereby achieving the purpose of metal recovery and improving the purity of the recycled asphalt.
[0022] See also Figures 1-6The present invention provides a technical solution: the crushing device 3 includes a crushing box body 31, a fixing mechanism 32 is fixedly connected to the top of the crushing box body 31, and a second motor 33 is fixedly connected to one side of the crushing box body 31. The driving shaft of the second motor 33 passes through the crushing box body 31 and is fixedly connected to the rotating column 34. The end of the rotating column 34 away from the second motor 33 is rotatably connected to the crushing box body 31, and a crushing gear roller 35 is fixedly connected to the side of the rotating column 34. The top of the crushing box body 31 is connected to a discharge port 36, and the bottom of the discharge port 36 is fixedly connected to a second bracket 37. The second bracket 37 is fixedly connected to the top of the working platform 1, and the crushing box body 31 is located below the magnetic separation drum 24. The fixing mechanism 32 includes a third bracket 321, and the top of the third bracket 321 is fixedly connected to a fixed beam 322, and the bottom of the fixed beam 322 is fixedly connected to a pneumatic piston rod 323, and the bottom of the pneumatic piston rod 323 is fixedly connected to a fixed protective plate 324. The third bracket 321 is fixedly connected to the top of the crushing box body 31.
[0023] During use, the old waste asphalt is screened by the magnetic separation device 2 and falls into the crushing box 31, and the second motor 33 is started. The drive shaft of the second motor 33 rotates to drive the rotating column 34 to rotate, and the rotation of the rotating column 34 drives the crushing gear roller 35 to rotate. Since two sets of crushing gear rollers 35 with opposite rotation directions are provided, larger solid asphalt can be crushed. When the solid asphalt is crushed, the asphalt will rotate with the rotation of the crushing gear roller 35. Some solid asphalt may not be completely crushed due to the rotation, so the pneumatic piston rod 323 moves up and down, and the pneumatic piston rod 323 moves up and down to drive the fixed protective plate 324 to move up and down. When the fixed protective plate 324 moves to the appropriate position below, it squeezes the solid asphalt and cooperates with the crushing gear roller 35 to crush it. After complete crushing, it is finally discharged from the discharge port 36, thereby improving the crushing efficiency.
[0024] See also Figures 1-9The present invention provides a technical solution: the screening device 4 includes a feed box 41, the top of the feed box 41 is connected to a protective shell 42, the top of the protective shell 42 is fixedly connected to a purification mechanism 43, the bottom of the feed box 41 is fixedly connected to a fourth bracket 44, the side of the feed box 41 is fixedly connected to a third motor 45, the driving shaft of the third motor 45 passes through the feed box 41 and is fixedly connected to a first rotating rod 46, the first rotating rod 46 is sleeved and fixedly connected to a spiral feeding plate 47, the first rotating rod 46 The end away from the third motor 45 is fixedly connected to the second rotating rod 48, and the side of the second rotating rod 48 is fixedly connected to the rotating tool holder 422. One end of the second rotating rod 48 is rotatably connected to the screening drum 49. The side of the screening drum 49 is evenly provided with a first screening hole 410, a second screening hole 411 and a third screening hole 412. The inner wall of the screening drum 49 is fixedly connected to a cleaning mechanism 413. A screening shell 414 is sleeved on the screening drum 49 and rotatably connected. The bottom of the screening shell 414 is respectively penetrated and fixed. The first discharge nozzle 415, the second discharge nozzle 416, and the third discharge nozzle 417 are fixedly connected. The two ends of the bottom of the screening shell 414 are fixedly connected to the fifth bracket 420. The end of the screening drum 49 away from the feed box 41 is fixedly connected to the driven gear 418. The side of the driven gear 418 is engaged with the driving gear 419. The side of the driving gear 419 is fixedly connected to the driving shaft of the fourth motor 421. The fourth motor 421 is fixedly connected to the side of the fifth bracket 420. The fourth bracket 44 is fixedly connected to the working platform 1 At the top, the fifth bracket 420 is fixedly connected to the top of the working platform 1, the aperture of the first sieve hole 410 is smaller than that of the second sieve hole 411, the aperture of the second sieve hole 411 is smaller than that of the third sieve hole 412, the first discharge nozzle 415, the second discharge nozzle 416, and the third discharge nozzle 417 are respectively located below the first sieve hole 410, the second sieve hole 411 and the third sieve hole 412 areas, and the three asphalt recovery boxes 5 are respectively located below the first discharge nozzle 415, the second discharge nozzle 416, and the third discharge nozzle 417.
[0025] During use, the crushed old waste asphalt is discharged from the discharge port 36 into the feed box 41, and the third motor 45 is started. The drive shaft of the third motor 45 rotates to drive the first rotating rod 46 to rotate, and the first rotating rod 46 rotates to drive the second rotating rod 48 to rotate. The first rotating rod 46 rotates to drive the spiral feeding plate 47 to rotate, and the spiral feeding plate 47 rotates to drive the old waste asphalt inside the feed box 41 to be screened inside the screening drum 49. The second rotating rod 48 rotates to drive the rotating knife frame 422 to rotate. The rotating knife frame 422 rotates inside the screening drum 49 to perform secondary crushing of the old waste asphalt, thereby improving the quality of the material. To increase the yield of fine asphalt, the fourth motor 421 is started, and the driving shaft of the fourth motor 421 rotates to drive the driving gear 419, and the driving gear 419 rotates to drive the driven gear 418, and the driven gear 418 rotates to drive the screening drum 49. The asphalt inside the screening drum 49 is thrown to the edge under the centrifugal force of the rotation of the screening drum 49, and then the asphalt particles of different particle sizes are screened out through the first screening hole 410, the second screening hole 411, and the third screening hole 412, and finally fall into the asphalt recovery box 5, so that it can be screened through multiple screening holes, thereby improving the screening efficiency.
[0026] See also Figures 1-10 The present invention provides a technical solution: the purification mechanism 43 includes a biological enzyme inhibitor storage box 431, one side of the biological enzyme inhibitor storage box 431 is connected to the water inlet of the high-pressure water pump 432, the water outlet of the high-pressure water pump 432 is connected to the water pipe 433, the water pipe 433 passes through the protective shell 42 and extends to the inside of the protective shell 42. One end is connected to the spray head 434, and the biological enzyme inhibitor storage box 431 is fixedly connected to the top of the protective shell 42.
[0027] During use, when the old waste asphalt falls into the feed box 41, the high-pressure water pump 432 is started, and the bio-enzyme preparation inside the bio-enzyme inhibitor storage box 431 is pumped into the water pipe 433, and the bio-enzyme preparation in the water pipe 433 flows into the spray head 434, and finally the old waste asphalt inside the feed box 41 is sprayed. The bio-enzyme preparation can efficiently decompose harmful components in the waste asphalt, such as sulfides, nitrogen oxides, etc., while releasing a fresh natural fragrance, effectively neutralizing and removing odors, thereby obtaining green and odorless recycled asphalt, effectively protecting the environment.
[0028] See also Figures 1-11 The present invention provides a technical solution: the cleaning mechanism 413 includes a circular slide 4131, the side of the circular slide 4131 is slidably connected to an electric slider 4132, the side of the electric slider 4132 is fixedly connected to a connecting rod 4133, the side of the connecting rod 4133 is fixedly connected to a cleaning brush 4134, and the circular slide 4131 is fixedly connected to the inner wall of the screening drum 49.
[0029] During use, when there is residual asphalt stuck on the inner wall of the screening drum 49, start the electric slider 4132, and the electric slider 4132 can slide on the circular slide 4131. The sliding of the electric slider 4132 drives the connecting rod 4133 to slide around the center of the circular slide 4131. The sliding of the connecting rod 4133 drives the cleaning brush 4134 to slide on the inner wall of the screening drum 49, so that the asphalt stuck on the inner wall of the screening drum 49 can be cleaned, avoiding the asphalt clogging the screening drum 49 and improving the screening efficiency of the asphalt.
[0030] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.
Claims
1. An asphalt particle screening device for asphalt recycling, characterized by: The invention comprises a working platform (1), wherein the top of the working platform (1) is fixedly connected to a magnetic separation device (2), the portion of the top of the working platform (1) located on one side of the magnetic separation device (2) is fixedly connected to a crushing device (3), the portion of the top of the working platform (1) located on one side of the crushing device (3) is fixedly connected to a screening device (4), and the top of the working platform (1) located below the screening device (4) is fixedly connected to an asphalt recovery box (5).
2. The asphalt particle screening device for asphalt recycling according to claim 1, characterized in that: The magnetic separation device (2) includes a first bracket (21), the inner wall of the first bracket (21) is fixedly connected to a belt conveyor (22), the input end of the belt conveyor (22) is fixedly connected to the drive shaft of a first motor (23), the output end of the belt conveyor (22) is penetrated by and rotatably connected to a magnetic separation drum (24), the inner wall of the magnetic separation drum (24) is fixedly connected to a magnetic attraction ring (25), both ends of the magnetic separation drum (24) are rotatably connected to the first bracket (21), the portions of the inner wall of the first bracket (21) close to the magnetic separation drum (24) are fixedly connected to inclined guide plates (26), the inclined guide plates (26) are located below the magnetic separation drum (24), and the inner wall of the first bracket (21) is fixedly connected to a metal recovery box (27).
3. The asphalt particle screening device for asphalt recycling according to claim 2, characterized in that: The first bracket (21) is fixedly connected to the top of the working platform (1), and the metal recovery box (27) is fixedly connected to the top of the working platform (1).
4. The asphalt particle screening device for asphalt recycling according to claim 1, characterized in that: The pulverizing device (3) comprises a pulverizing box (31), a fixing mechanism (32) is fixedly connected to the top of the pulverizing box (31), a second motor (33) is fixedly connected to one side of the pulverizing box (31), a driving shaft of the second motor (33) passes through the pulverizing box (31) and is fixedly connected to a rotating column (34), an end of the rotating column (34) away from the second motor (33) is rotatably connected to the pulverizing box (31), a pulverizing tooth roller (35) is fixedly connected to the side of the rotating column (34), and a discharge port (36) is communicated with the bottom of the pulverizing box (31), and a second bracket (37) is fixedly connected to the bottom of the discharge port (36).
5. The asphalt particle screening device for asphalt recycling according to claim 4, characterized in that: The second bracket (37) is fixedly connected to the top of the working platform (1), and the crushing box (31) is located below the magnetic separation cylinder (24).
6. The asphalt particle screening device for asphalt recycling according to claim 4, characterized in that: The fixing mechanism (32) comprises a third bracket (321), the top of the third bracket (321) is fixedly connected to a fixed crossbeam (322), the bottom of the fixed crossbeam (322) is fixedly connected to a pneumatic piston rod (323), the bottom of the pneumatic piston rod (323) is fixedly connected to a fixed protective plate (324), and the third bracket (321) is fixedly connected to the top of the pulverizing box (31).
7. The asphalt particle screening device for asphalt recycling according to claim 1, characterized in that: The screening device (4) includes a feed box (41), the top of the feed box (41) is connected to a protective shell (42), the top of the protective shell (42) is fixedly connected to a purification mechanism (43), the bottom of the feed box (41) is fixedly connected to a fourth bracket (44), the side of the feed box (41) is fixedly connected to a third motor (45), the driving shaft of the third motor (45) passes through the feed box (41) and is fixedly connected to a first rotating rod (46), a spiral feeding plate (47) is sleeved on and fixedly connected to the first rotating rod (46), the end of the first rotating rod (46) away from the third motor (45) is fixedly connected to a second rotating rod (48), the side of the second rotating rod (48) is fixedly connected to a rotating knife holder (422), the second rotating rod (48) is sleeved on and rotatably connected to a screening drum (49), and the sides of the screening drum (49) are uniformly The first screening hole (410), the second screening hole (411) and the third screening hole (412) are provided, the inner wall of the screening drum (49) is fixedly connected to a cleaning mechanism (413), the screening shell (414) is sleeved on the screening drum (49) and rotatably connected, the bottom of the screening shell (414) is respectively penetrated and fixedly connected with a first discharge nozzle (415), a second discharge nozzle (416) and a third discharge nozzle (417), the bottom of the screening shell (414) is fixedly connected to a fifth bracket (420), the end of the screening drum (49) away from the feed box (41) is fixedly connected to a driven gear (418), the side of the driven gear (418) is meshed with a driving gear (419), the side of the driving gear (419) is fixedly connected to the driving shaft of a fourth motor (421), and the fourth motor (421) is fixedly connected to the side of the fifth bracket (420).
8. The asphalt particle screening device for asphalt recycling according to claim 7, characterized in that: The fourth bracket (44) is fixedly connected to the top of the working platform (1), the fifth bracket (420) is fixedly connected to the top of the working platform (1), the aperture of the first sieve hole (410) is smaller than that of the second sieve hole (411), the aperture of the second sieve hole (411) is smaller than that of the third sieve hole (412), the first discharge nozzle (415), the second discharge nozzle (416), and the third discharge nozzle (417) are respectively located below the first sieve hole (410), the second sieve hole (411), and the third sieve hole (412), and the three asphalt recovery boxes (5) are respectively located below the first discharge nozzle (415), the second discharge nozzle (416), and the third discharge nozzle (417).
9. The asphalt particle screening device for asphalt recycling according to claim 7, characterized in that: The purification mechanism (43) includes a bio-enzyme inhibitor storage box (431), one side of the bio-enzyme inhibitor storage box (431) is connected to the water inlet of a high-pressure water pump (432), the water outlet of the high-pressure water pump (432) is connected to a water pipe (433), the water pipe (433) passes through the protective shell (42) and extends into the interior of the protective shell (42), one end of the water pipe (433) extending to the protective shell (42) is connected to a spray head (434), and the bio-enzyme inhibitor storage box (431) is fixedly connected to the top of the protective shell (42).
10. The asphalt particle screening device for asphalt recycling according to claim 7, characterized in that: The cleaning mechanism (413) comprises a circular slide (4131), the circular slide (4131) being slidably connected to a motorized slider (4132) on its side, the motorized slider (4132) being fixedly connected to a connecting rod (4133) on its side, the connecting rod (4133) being fixedly connected to a cleaning brush (4134) on its side, and the circular slide (4131) being fixedly connected to the inner wall of the screening drum (49).