An asphalt concrete recycling device

Abstract

The application relates to the technical field of asphalt concrete recycling, in particular to an asphalt concrete recycling device which comprises feeding mechanisms, conveying mechanisms, crushing mechanisms, screening mechanisms and separating mechanisms arranged in sequence on the upper surface of a mounting bottom plate; the crushing mechanisms comprise jaw crushers, cone crushers and impact crushers which are arranged in sequence on the upper surface of the mounting bottom plate; the screening mechanisms comprise vibrating screening machines which are arranged on the upper surface of the mounting bottom plate and located behind the crushing mechanisms; the separating mechanisms comprise centrifugal separators which are arranged on the mounting bottom plate and located behind the vibrating screening machines; through the arrangement of the feeding mechanisms, the conveying mechanisms, the crushing mechanisms, the screening mechanisms and the separating mechanisms, the device can realize the rapid, uniform and efficient crushing of asphalt concrete materials, the accurate separation of aggregate with different particle sizes, and the rapid and sufficient separation of asphalt and aggregate when the asphalt concrete is processed.

Description

Technical Field

[0001] This application relates to the field of asphalt concrete recycling technology, and in particular to an asphalt concrete recycling device. Background Technology

[0002] In the field of road construction and maintenance, the continuous development and upgrading of transportation infrastructure generates a large amount of waste asphalt concrete materials. If these waste materials are not properly recycled and reused, they will not only occupy a significant amount of land resources but also cause a certain degree of environmental pollution. Furthermore, the cost of re-mining raw materials to produce new asphalt concrete is high. Therefore, recycling and reusing asphalt concrete has significant economic and environmental implications.

[0003] However, existing asphalt concrete recycling systems have many problems that urgently need to be solved.

[0004] Firstly, in the crushing stage, traditional crushers are not ideal for crushing waste asphalt concrete. Due to long-term use, waste asphalt concrete has a dense internal structure and contains various impurities, making it difficult for ordinary crushers to fully break it down to the appropriate particle size. For example, while jaw crushers can perform preliminary crushing of large pieces, they cannot further refine some highly cohesive asphalt concrete blocks, increasing the difficulty of subsequent processing and affecting recycling efficiency. Furthermore, over-crushing is prone to occur during the crushing process, resulting in some aggregate particles being too small, failing to meet the quality requirements of recycled asphalt concrete, and causing resource waste.

[0005] Secondly, the screening process also has its shortcomings. Most existing screening equipment uses simple vibrating screen structures, resulting in limited screening accuracy. When screening particles from crushed waste asphalt concrete, it cannot accurately separate aggregates of different particle sizes, leading to inconsistent quality of recycled aggregates. Smaller impurities can easily mix with larger aggregates, while some qualified aggregates may be mistakenly screened as substandard products, reducing the utilization rate of recycled aggregates.

[0006] In summary, there is an urgent practical need to develop an asphalt concrete recycling system that can efficiently crush, accurately screen, and effectively separate asphalt and aggregates, while also possessing a high degree of automation. The asphalt concrete recycling system of this invention aims to solve the problems existing in the aforementioned prior art.

[0007] Therefore, this application provides an asphalt concrete recycling device. Summary of the Invention

[0008] The purpose of this application is to solve at least one technical problem raised in the background art.

[0009] This application provides an asphalt concrete recycling device, which includes a feeding mechanism, a conveying mechanism, a crushing mechanism, a screening mechanism and a separation mechanism arranged sequentially on the upper surface of the mounting base plate; The crushing mechanism includes a jaw crusher, a cone crusher, and an impact crusher, which are sequentially mounted on the upper surface of the mounting base plate. The screening mechanism includes a vibrating screen mounted on the upper surface of the mounting base plate and located behind the crushing mechanism; The conveying mechanism includes a first belt conveyor installed at the discharge end of the feeding mechanism and the feed end of the jaw crusher, a second belt conveyor installed at the discharge end of the jaw crusher and the feed end of the cone crusher, a third belt conveyor installed at the discharge end of the cone crusher and the feed end of the impact crusher, and a fourth belt conveyor installed at the discharge end of the impact crusher and the feed end of the vibrating screen. The separation mechanism includes a centrifugal separator installed on the mounting base plate and located behind the vibrating screen.

[0010] Preferably, the vibrating screen is provided with three screens fixed inside from top to bottom, and the aperture of the three screens decreases from top to bottom.

[0011] In the above technical solution, the first layer of screen has a relatively large aperture of 15mm, mainly used to separate coarse aggregates with a particle size greater than 15mm. The screen vibrates at high frequency under the action of a vibrating device, causing the material to jump and tumble on the screen. Material with a particle size less than 15mm passes through the screen and falls to the next layer. The vibration frequency and amplitude of the vibrating device can be adjusted according to the material characteristics and feed speed to ensure screening efficiency. For example, for highly viscous materials, the vibration frequency and amplitude can be appropriately increased.

[0012] The second screen, with a 10mm aperture, separates aggregates with a particle size between 10-15mm. Similarly, a vibration device thoroughly separates the material on the screen; aggregates of the correct size pass through, while those that don't remain on top. Sensors monitor the material distribution on the screen in real time. When excessive material accumulates in a certain area, the sensor transmits a signal to the control system, which automatically adjusts the vibration parameters of the vibrating device in that area to ensure even material distribution and prevent screen clogging.

[0013] The third screen, with a 5mm aperture, is responsible for separating aggregates with a particle size of 5-10mm. Through the screening process using these three screens, precise separation of aggregates of different particle sizes is achieved.

[0014] Preferably, the centrifuge is equipped with a microwave heating device inside, which is used to microwave heat the material entering the centrifuge to soften the asphalt.

[0015] By adopting the above technical solution, microwaves can penetrate materials, causing asphalt molecules to vibrate at high frequency, thereby rapidly heating and softening them.

[0016] Preferably, the outer surface of the centrifuge is equipped with a metering pump for adding chemical additives to the microwave-heated material inside the centrifuge to reduce the adhesion between asphalt and aggregate.

[0017] By employing the above technical solution, a specially formulated chemical additive is added to the material via a metering pump during microwave heating. The chemical additive is evenly sprayed onto the material through a pipeline, ensuring full contact with the softened asphalt and reducing the adhesion between the asphalt and the aggregate.

[0018] Preferably, the feeding mechanism includes two mounting brackets fixed on the upper surface of the mounting base plate, and a feeding channel disposed at the top of the two mounting brackets. A mounting frame is fixed in the middle of the two mounting brackets, and a drive motor for driving the feeding channel to vibrate is fixed in the inner bottom wall of the mounting frame.

[0019] By adopting the above technical solution, the feeding channel can be automatically vibrated at high speed under the action of the drive motor, which facilitates the uniform feeding of materials.

[0020] Preferably, the top of the mounting bracket is fixed with two symmetrical spring seats, the top of the spring seats is fixed with a buckle, and the outer surface of the feeding channel is fixed with a locking post corresponding to the buckle.

[0021] By adopting the above technical solution, it is easy to install the feeding channel on the top of the two mounting brackets.

[0022] Preferably, the inner wall of the mounting frame is rotatably provided with a rotating shaft, and a plurality of eccentric discs are fixedly fixed at equal intervals on the surface of the rotating shaft. The surface of the eccentric discs abuts against the lower surface of the feeding channel. The output end of the drive motor is provided with a reducer, and the drive motor drives the rotating shaft to rotate at a reduced speed through the reducer.

[0023] By adopting the above technical solution, the rotating shaft can be driven to rotate by the drive motor and the reducer. When the rotating shaft rotates, it can drive the eccentric disk to rotate, thereby realizing continuous reciprocating pushing of the feeding channel.

[0024] Preferably, the outer surface of the feeding mechanism is provided with a dust collection mechanism, which includes a dust collection hood disposed at the top of the feeding channel and a pipe fixed to the inner wall of the dust collection hood. A plurality of dust collection pipes are equidistantly disposed on the surface of the pipe.

[0025] By adopting the above technical solution, the dust generated during the feeding process can be automatically absorbed through the dust suction pipe inside the dust suction hood.

[0026] Preferably, the dust collection mechanism further includes a dust collection box fixed on the outer surface of the feeding channel. The surface of the dust collection box is provided with a connecting pipe. One end of the connecting pipe extends into the interior of the dust collection box, and the other end of the connecting pipe extends into the interior of the pipe. A filter bag is fixed to the end of the connecting pipe located inside the dust collection box by wire. A sealed box door is hinged to the outer surface of the dust collection box to facilitate the replacement of the filter bag.

[0027] By adopting the above technical solution, dust can be effectively collected through the filter bags inside the dust collection box.

[0028] Preferably, the lower surface of the dust collection box is provided with a mounting hole, the inner wall of the mounting hole is fixed with a vertical tube, the inner wall of the vertical tube is fixed with two symmetrical filter screens, the opposite surfaces of the two filter screens are rotatably connected with a connecting shaft, the surface of the connecting shaft is fixed with a suction fan blade, one end of the rotating shaft passes through the mounting frame and is fixed with an extension shaft, the end of the extension shaft away from the rotating shaft extends into the interior of the vertical tube and is fixed with a driving bevel gear, and the surface of the connecting shaft is fixed with a driven bevel gear that meshes with the driving bevel gear.

[0029] By adopting the above technical solution, the rotation of the rotating shaft can drive the extension shaft to rotate. The rotation of the extension shaft drives the connecting shaft to rotate under the action of the driving bevel gear and the driven bevel gear. The rotation of the connecting shaft drives the suction fan blades to rotate at high speed, so that the suction fan blades can draw air into the dust collection box, and the dust collection box can effectively absorb the dust in the feeding process through the connecting pipe, pipe and suction pipe.

[0030] In summary, this application includes at least one of the following beneficial technical effects: 1. The asphalt concrete recycling device described in this application, by setting up a feeding mechanism, a conveying mechanism, a crushing mechanism, a screening mechanism, and a separation mechanism, enables the device to process asphalt concrete by first feeding it evenly onto a first belt conveyor, which then transports the material to a jaw crusher. Inside the crusher, the moving jaw plate and the fixed jaw plate move relative to each other, squeezing and crushing the material, initially breaking large pieces of waste asphalt concrete into particles with a diameter of approximately 50-100mm. The material is first broken into small pieces, then conveyed to a cone crusher via a second belt conveyor. Inside the crushing chamber, the material is subjected to continuous compression, bending, and shearing, further reducing its particle size to 20-50mm. Finally, the material is conveyed to an impact crusher via a third belt conveyor. The high-speed rotating rotor's hammers impact the material, causing it to repeatedly collide with the impact plates and screens, ultimately crushing it into particles with a diameter of 5-20mm. This achieves rapid, uniform, and efficient crushing of the asphalt concrete material. The material is then conveyed to a vibrating screen via a fourth belt conveyor for precise separation of aggregates of different sizes. Finally, the screened material is added to a centrifugal separator, and a microwave heating device and metering pump are activated to microwave-heat the material, rapidly softening the asphalt. Simultaneously, the metering pump sprays chemical additives onto the surface of the material, reducing the adhesion between the asphalt and aggregates. Under centrifugal force, the softened asphalt and aggregates are rapidly and fully separated.

[0031] 2. The asphalt concrete recycling device described in this application, by setting up a dust collection mechanism, enables the rotation of the drive motor and the eccentric disc under the action of the reducer during the feeding of asphalt concrete. The rotation of the eccentric disc continuously pushes the feeding channel and, under the action of the spring seat, continuously vibrates the feeding channel, thus achieving the purpose of automatic feeding. At the same time, the rotation of the drive shaft can drive the extension shaft to rotate. The rotation of the extension shaft drives the connecting shaft to rotate under the action of the driving bevel gear and the driven bevel gear. The rotation of the connecting shaft drives the suction fan blades to rotate at high speed, thereby causing the suction fan blades to draw air into the dust collection box. The dust collection box effectively absorbs dust during the feeding process through the connecting pipe, pipeline and suction pipe, and collects it through the filter bag, thus achieving the purpose of effectively collecting dust in the material during the feeding process. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a three-dimensional structural schematic diagram of Embodiment 1 of this application; Figure 3 This is a three-dimensional structural diagram of the feeding mechanism in Embodiment 1 of this application; Figure 4This is a side view of the feeding mechanism in Embodiment 1 of this application; Figure 5 This is a three-dimensional structural diagram of the feeding mechanism in Embodiment 2 of this application; Figure 6 This is a bottom view of the feeding mechanism in Embodiment 2 of this application; Figure 7 This is a schematic diagram of the internal structure of the dust collection box in Embodiment 2 of this application; Figure 8 This is a schematic diagram of the cross-sectional structure of the vertical pipe in Embodiment 2 of this application; Figure 9 This application Figure 8 Enlarged structural diagram at point A in the middle.

[0033] Explanation of reference numerals in the attached figures: 100. Feeding mechanism; 101. Mounting bracket; 102. Feeding channel; 103. Mounting frame; 104. Drive motor; 105. Spring seat; 106. Buckle; 107. Locking post; 108. Rotating shaft; 109. Eccentric disc; 1010. Reducer; 200. Conveying mechanism; 201. First belt conveyor; 202. Second belt conveyor; 203. Third belt conveyor; 204. Fourth belt conveyor; 300. Crushing mechanism; 301. Jaw crusher; 302. Cone crusher; 303. Impact crusher; 400. Screening mechanism; 401. Vibrating screen; 500. Separation mechanism; 501. Centrifugal separator; 600. Dust collection mechanism; 601. Dust hood; 602. Pipe; 603. Dust collection hose; 604. Dust collection box; 605. Connecting pipe; 606. Filter bag; 607. Sealed door; 608. Vertical pipe; 609. Filter screen; 6010. Connecting shaft; 6011. Fan blade; 6012. Extension shaft; 6013. Driving bevel gear; 6014. Driven bevel gear. Detailed Implementation

[0034] The following combination Figures 1 to 9 This application will be described in further detail below. Example

[0035] Please refer to the following carefully. Figures 1 to 4An asphalt concrete recycling device includes a feeding mechanism 100, a conveying mechanism 200, a crushing mechanism 300, a screening mechanism 400, and a separation mechanism 500 arranged sequentially on the upper surface of an installation base plate. The crushing mechanism 300 includes a jaw crusher 301, a cone crusher 302, and an impact crusher 303 arranged sequentially on the upper surface of the installation base plate. The screening mechanism 400 includes a vibrating screen 401 installed on the upper surface of the installation base plate and located behind the crushing mechanism 300. The conveying mechanism 200 includes a feeding mechanism 100, a conveying mechanism 200, and a separation mechanism 500 arranged sequentially on the upper surface of the installation base plate. The first belt conveyor 201 is located at the discharge end and the feed end of the jaw crusher 301; the second belt conveyor 202 is located at the discharge end of the jaw crusher 301 and the feed end of the cone crusher 302; the third belt conveyor 203 is located at the discharge end of the cone crusher 302 and the feed end of the impact crusher 303; and the fourth belt conveyor 204 is located at the discharge end of the impact crusher 303 and the feed end of the vibrating screen 401. The separation mechanism 500 includes a centrifugal separator 501 installed on the mounting base plate and located behind the vibrating screen 401.

[0036] Please refer to this carefully. Figure 1 , Figure 2 The vibrating screen 401 has three screening screen plates fixed inside from top to bottom, and the aperture of the three screening screen plates decreases from top to bottom.

[0037] Specifically, in the above technical solution, the first layer of screen has a relatively large aperture of 15mm, mainly used to separate coarse aggregates with a particle size greater than 15mm. The screen vibrates at high frequency under the action of a vibrating device, causing the material to jump and tumble on the screen. Material with a particle size less than 15mm passes through the screen and falls to the next layer. The vibration frequency and amplitude of the vibrating device can be adjusted according to the material characteristics and feed speed to ensure screening efficiency. For example, for highly viscous materials, the vibration frequency and amplitude can be appropriately increased.

[0038] The second screen, with a 10mm aperture, separates aggregates with a particle size between 10-15mm. Similarly, a vibration device thoroughly separates the material on the screen; aggregates of the correct size pass through, while those that don't remain on top. Sensors monitor the material distribution on the screen in real time. When excessive material accumulates in a certain area, the sensor transmits a signal to the control system, which automatically adjusts the vibration parameters of the vibrating device in that area to ensure even material distribution and prevent screen clogging.

[0039] The third screen, with a 5mm aperture, is responsible for separating aggregates with a particle size of 5-10mm. Through the screening process using these three screens, precise separation of aggregates of different particle sizes is achieved.

[0040] Please refer to this carefully. Figure 1 , Figure 2The centrifuge 501 is equipped with a microwave heating device, which is used to microwave heat the material entering the centrifuge 501 to soften the asphalt.

[0041] Specifically, microwaves can penetrate materials, causing asphalt molecules to vibrate at high frequencies, thereby rapidly heating and softening them.

[0042] Please refer to this carefully. Figure 1 , Figure 2 A metering pump is installed on the outer surface of the centrifuge 501 to add chemical additives to the material heated by microwave inside the centrifuge 501, in order to reduce the adhesion between asphalt and aggregate.

[0043] Specifically, while the material is being microwaved, a specially formulated chemical additive is added to it via a metering pump. The chemical additive is evenly sprayed onto the material, ensuring full contact with the softened asphalt and reducing the adhesion between the asphalt and the aggregate.

[0044] Please refer to this carefully. Figure 3 , Figure 4 The feeding mechanism 100 includes two mounting brackets 101 fixed on the upper surface of the mounting base plate, and a feeding channel 102 provided at the top of the two mounting brackets 101. A mounting frame 103 is fixed in the middle of the two mounting brackets 101, and a drive motor 104 for driving the feeding channel 102 to vibrate is fixed in the inner bottom wall of the mounting frame 103.

[0045] Specifically, the drive motor 104 can drive the feeding channel 102 to vibrate automatically at high speed, so that the material can be fed evenly.

[0046] Please refer to this carefully. Figure 3 , Figure 4 The top of the mounting bracket 101 is fixed with two symmetrical spring seats 105, and the top of the spring seats 105 is fixed with a buckle 106. The outer surface of the feeding channel 102 is fixed with a locking post 107 corresponding to the buckle 106.

[0047] Specifically, it facilitates the installation of the feeding channel 102 on top of the two mounting brackets 101.

[0048] Please refer to this carefully. Figure 3 , Figure 4 The inner wall of the mounting frame 103 is rotatably provided with a rotating shaft 108. Several eccentric discs 109 are fixed at equal intervals on the surface of the rotating shaft 108. The surface of the eccentric discs 109 abuts against the lower surface of the feeding channel 102. The output end of the drive motor 104 is provided with a reducer 1010. The drive motor 104 drives the rotating shaft 108 to rotate at a reduced speed through the reducer 1010.

[0049] Specifically, the drive motor 104, under the action of the reducer 1010, can drive the rotating shaft 108 to rotate. When the rotating shaft 108 rotates, it can drive the eccentric disk 109 to rotate, thereby realizing continuous reciprocating pushing of the feeding channel 102.

[0050] In this embodiment, by setting up a feeding mechanism 100, a conveying mechanism 200, a crushing mechanism 300, a screening mechanism 400, and a separating mechanism 500, the device can, when processing asphalt concrete, first feed the asphalt concrete evenly onto the first belt conveyor 201 through the feeding mechanism 100, and then transport the material to the jaw crusher 301 through the first belt conveyor 201. Inside the crusher, the moving jaw plate and the fixed jaw plate move relative to each other, squeezing and crushing the material, initially crushing large pieces of waste asphalt concrete into particles with a diameter of approximately 50-100mm. The material is first crushed into small pieces, then conveyed to the cone crusher 302 via the second belt conveyor 202. In the crushing chamber, the material is continuously subjected to compression, bending, and shearing, further reducing the particle size to 20-50mm. Finally, the material is conveyed to the impact crusher 303 via the third belt conveyor 203. The high-speed rotating rotor's hammers impact the material, causing it to repeatedly collide with the impact plate and screen plate, ultimately crushing it into particles with a diameter of 5-20mm. This achieves rapid, uniform, and efficient crushing of the asphalt concrete material. The material is then conveyed to the vibrating screen 401 via the fourth belt conveyor 204, achieving precise separation of aggregates of different sizes. Finally, the screened material is added to the centrifugal separator 501, and the microwave heating device and metering pump are activated to microwave heat the material, rapidly softening the asphalt. Simultaneously, the metering pump sprays chemical additives onto the surface of the material, reducing the adhesion between the asphalt and aggregates. Under centrifugal force, the softened asphalt and aggregates are rapidly and fully separated. Example

[0051] Based on Example 1, referring to Figures 5 to 9 And unlike Example 1, the following is true: Please refer to this carefully. Figure 5 , Figure 6 The outer surface of the feeding mechanism 100 is provided with a dust collection mechanism 600. The dust collection mechanism 600 includes a dust collection hood 601 provided at the top of the feeding channel 102 and a pipe 602 fixed on the inner wall of the dust collection hood 601. A plurality of dust collection pipes 603 are equidistantly arranged on the surface of the pipe 602.

[0052] Specifically, the dust generated during the feeding process can be automatically absorbed through the suction pipe 603 inside the dust hood 601.

[0053] Please refer to this carefully. Figure 6 , Figure 7The dust collection mechanism 600 also includes a dust collection box 604 fixed on the outer surface of the feeding channel 102. A connecting pipe 605 is provided on the surface of the dust collection box 604. One end of the connecting pipe 605 extends into the interior of the dust collection box 604, and the other end of the connecting pipe 605 extends into the interior of the pipe 602. A filter bag 606 is fixed to the end of the connecting pipe 605 located inside the dust collection box 604 by wire bolting. A sealed box door 607 is hinged to the outer surface of the dust collection box 604 to facilitate the replacement of the filter bag 606.

[0054] Specifically, dust can be effectively collected through the filter bag 606 inside the dust collection box 604.

[0055] Please refer to this carefully. Figure 8 , Figure 9 The lower surface of the dust collection box 604 has a mounting hole, and a vertical tube 608 is fixed to the inner wall of the mounting hole. Two symmetrical filter screens 609 are fixed to the inner wall of the vertical tube 608. A connecting shaft 6010 is rotatably arranged on the opposite surface of the two filter screens 609. A suction fan blade 6011 is fixed to the surface of the connecting shaft 6010. One end of the rotating shaft 108 passes through the mounting frame 103 and is fixed to the extension shaft 6012. The end of the extension shaft 6012 away from the rotating shaft 108 extends into the interior of the vertical tube 608 and is fixed to the driving bevel gear 6013. A driven bevel gear 6014 that meshes with the driving bevel gear 6013 is fixed to the surface of the connecting shaft 6010.

[0056] Specifically, the rotation of the rotating shaft 108 can drive the extension shaft 6012 to rotate. The rotation of the extension shaft 6012 drives the connecting shaft 6010 to rotate under the action of the driving bevel gear 6013 and the driven bevel gear 6014. The rotation of the connecting shaft 6010 drives the suction fan blade 6011 to rotate at high speed, so that the suction fan blade 6011 sucks air into the dust collection box 604, and the dust collection box 604 effectively absorbs the dust in the feeding process through the connecting pipe 605, the pipe 602 and the suction pipe 603.

[0057] In this embodiment, by setting up a dust suction mechanism 600, during the feeding process of asphalt concrete through the feeding mechanism 100, the rotation of the drive motor 104, under the action of the reducer 1010, drives the rotating shaft 108 and the eccentric disk 109 to rotate. The rotation of the eccentric disk 109 achieves continuous pushing of the feeding channel 102, and under the action of the spring seat 105, achieves continuous vibration of the feeding channel 102, thus realizing the purpose of automatic feeding. At the same time, the rotation of the rotating shaft 108 can drive the extension shaft 6012 to rotate. The rotation of the drive bevel gear 6013 and driven bevel gear 6014 drives the connecting shaft 6010 to rotate. The rotation of the connecting shaft 6010 drives the suction fan blades 6011 to rotate at high speed, thereby causing the suction fan blades 6011 to draw air into the dust collection box 604. The dust collection box 604 effectively absorbs dust during the feeding process through the connecting pipe 605, pipe 602 and suction pipe 603, and collects it through the filter bag 606, thus achieving the purpose of effectively collecting dust in the material during the feeding process.

Claims

1. An asphalt concrete recycling device, characterized in that, It includes a feeding mechanism (100), a conveying mechanism (200), a crushing mechanism (300), a screening mechanism (400), and a separating mechanism (500) arranged sequentially on the upper surface of the mounting base plate. The crushing mechanism (300) includes a jaw crusher (301), a cone crusher (302) and an impact crusher (303) that are sequentially mounted on the upper surface of the mounting base plate. The screening mechanism (400) includes a vibrating screen (401) mounted on the upper surface of the mounting base plate and located behind the crushing mechanism (300). The conveying mechanism (200) includes a first belt conveyor (201) installed at the discharge end of the feeding mechanism (100) and the feed end of the jaw crusher (301), a second belt conveyor (202) installed at the discharge end of the jaw crusher (301) and the feed end of the cone crusher (302), a third belt conveyor (203) installed at the discharge end of the cone crusher (302) and the feed end of the impact crusher (303), and a fourth belt conveyor (204) installed at the discharge end of the impact crusher (303) and the feed end of the vibrating screen (401). The separation mechanism (500) includes a centrifugal separator (501) mounted on the mounting base plate and located behind the vibrating screen (401).

2. The asphalt concrete recycling device according to claim 1, characterized in that, The vibrating screen (401) has three screening screen plates fixed inside from top to bottom, and the aperture of the three screening screen plates decreases from top to bottom.

3. The asphalt concrete recycling device according to claim 1, characterized in that, The centrifuge (501) is equipped with a microwave heating device, which is used to microwave heat the material entering the centrifuge (501) to soften the asphalt.

4. The asphalt concrete recycling device according to claim 1, characterized in that, The centrifuge (501) is equipped with a metering pump on its outer surface, which is used to add chemical additives to the material heated by microwave inside the centrifuge (501) to reduce the adhesion between asphalt and aggregate.

5. An asphalt concrete recycling device according to claim 1, characterized in that, The feeding mechanism (100) includes two mounting brackets (101) fixed on the upper surface of the mounting base plate, and a feeding channel (102) set at the top of the two mounting brackets (101). A mounting frame (103) is fixed in the middle of the two mounting brackets (101), and a drive motor (104) for driving the vibration of the feeding channel (102) is fixed on the inner bottom wall of the mounting frame (103).

6. The asphalt concrete recycling device according to claim 5, characterized in that, The top of the mounting bracket (101) is fixed with two symmetrical spring seats (105), the top of the spring seats (105) is fixed with a buckle (106), and the outer surface of the feeding channel (102) is fixed with a locking post (107) corresponding to the buckle (106).

7. An asphalt concrete recycling device according to claim 6, characterized in that, The inner wall of the mounting frame (103) is rotatably provided with a rotating shaft (108). Several eccentric discs (109) are fixedly arranged at equal intervals on the surface of the rotating shaft (108). The surface of the eccentric discs (109) abuts against the lower surface of the feeding channel (102). The output end of the drive motor (104) is provided with a reducer (1010). The drive motor (104) drives the rotating shaft (108) to rotate at a reduced speed through the reducer (1010).

8. An asphalt concrete recycling device according to claim 7, characterized in that, The outer surface of the feeding mechanism (100) is provided with a dust collection mechanism (600). The dust collection mechanism (600) includes a dust collection hood (601) provided at the top of the feeding channel (102) and a pipe (602) fixed on the inner wall of the dust collection hood (601). A plurality of dust collection pipes (603) are provided at equal intervals on the surface of the pipe (602).

9. An asphalt concrete recycling device according to claim 8, characterized in that, The dust collection mechanism (600) also includes a dust collection box (604) fixed on the outer surface of the feeding channel (102). A connecting pipe (605) is provided on the surface of the dust collection box (604). One end of the connecting pipe (605) extends into the interior of the dust collection box (604), and the other end of the connecting pipe (605) extends into the interior of the pipe (602). A filter bag (606) is fixed to the end of the connecting pipe (605) inside the dust collection box (604) by wire bolting. A sealed box door (607) is hinged to the outer surface of the dust collection box (604) to facilitate the replacement of the filter bag (606).

10. An asphalt concrete recycling device according to claim 9, characterized in that, The dust collection box (604) has a mounting hole on its lower surface. A vertical tube (608) is fixed to the inner wall of the mounting hole. Two symmetrical filter screens (609) are fixed to the inner wall of the vertical tube (608). A connecting shaft (6010) is rotatably arranged on the opposite surfaces of the two filter screens (609). A suction fan blade (6011) is fixed to the surface of the connecting shaft (6010). One end of the rotating shaft (108) passes through the mounting frame (103) and is fixed to an extension shaft (6012). The end of the extension shaft (6012) away from the rotating shaft (108) extends into the interior of the vertical tube (608) and is fixed to a driving bevel gear (6013). A driven bevel gear (6014) that meshes with the driving bevel gear (6013) is fixed to the surface of the connecting shaft (6010).

Images