A road asphalt mixture recycling processing device

Abstract

The application discloses a road asphalt mixture recycling processing device and belongs to the technical field of road construction. The device comprises a shell, a bottom plate fixedly arranged at the bottom end of the shell, a rotating shaft fixedly arranged in the vertical direction of the center of the bottom plate, two discharging units fixedly arranged on the inner side wall of the shell, and the rotating shaft and the outer circumferential surface of the rotating shaft are fixedly connected and divide the inside of the shell into two same processing cavities. In the operation process of the device, when the infrared detector in the small-particle cavity detects that the aggregate amount in the small-particle cavity is too low, a signal is transmitted to the controller, and then the controller starts a speed reducer, the speed reducer drives the crushing roller in the large-particle cavity to rotate, the large-particle cavity is partially crushed to increase the proportion of small-size materials, and when the infrared detector in the large-particle cavity detects that the aggregate amount in the large-particle cavity is low, the speed reducer is closed to ensure the content of large-size aggregate.

Description

Technical Field

[0001] This invention belongs to the field of road construction technology, and in particular relates to a road asphalt mixture recycling processing device. Background Technology

[0002] Asphalt mixture is a general term for mixtures made by mixing mineral aggregates and asphalt binders. During routine highway overhaul construction, a large amount of old asphalt mixture is milled out. The old asphalt mixture and new asphalt mixture are mixed in a certain proportion, and additives, viscosity reducers, etc. are added to make a mixture that meets the requirements. This mixture is then paved back onto the road using an asphalt paver.

[0003] The strength of asphalt mixtures largely depends on the aggregate gradation and overall aggregate density. Using aggregates with larger and more uniform particle sizes can improve the interlocking force and internal friction angle of the asphalt mixture, thereby increasing its strength. During the preparation of asphalt mixtures, due to the different sizes of aggregates, workers add smaller aggregates to improve the adhesion between aggregates and increase the internal friction angle, thus enhancing the strength of the material. Generally, asphalt mixture preparation is an integrated process, making it difficult to adjust the proportion of aggregates of different sizes during production. Furthermore, during mixing, asphalt and aggregates are prone to sedimentation and stratification according to density, leading to uneven mixing and poor hardness. Therefore, this equipment still has certain shortcomings.

[0004] To address these issues, we propose a road asphalt mixture recycling and processing device. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the integrated process of general asphalt mixture preparation, which makes it difficult to adjust the proportion of different aggregates in the aggregate during the production process. Furthermore, asphalt and mineral aggregates are prone to sedimentation and stratification according to density during mixing, resulting in uneven mixing and poor hardness. Therefore, this invention proposes a road asphalt mixture recycling processing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A road asphalt mixture recycling processing device includes a shell, characterized in that the shell is a shell that runs through the upper and lower parts, a bottom plate is fixedly provided at the bottom of the shell, a rotating shaft is fixedly provided in the vertical direction at the center of the bottom plate, and two feeding units are fixedly provided on the inner side wall of the shell, and the two feeding units are fixedly connected to the outer peripheral surface of the rotating shaft and divide the interior of the shell into two identical processing chambers.

[0008] A material distribution hopper is fixedly installed on the inner wall of the processing chamber. The material distribution hopper is composed of a horizontal plate in the horizontal direction and a vertical plate in the vertical direction. Multiple screening holes are opened on both the horizontal and vertical plates of the material distribution hopper. The space formed by the horizontal and vertical plates of the material distribution hopper in the processing chamber is a large particle chamber for processing large particles of aggregate. The space between the outer wall of the horizontal and vertical plates and the inner wall of the outer shell is a small particle chamber for processing small particles of aggregate. A first feeding hopper is fixedly installed on the side wall of the large particle chamber, and a second feeding hopper is fixedly installed on the side wall of the small particle chamber. An adjustment mechanism for replenishing aggregate in the small particle chamber is provided in the large particle chamber.

[0009] Preferably, the first and second hoppers are symmetrically arranged along the axis of rotation, and both the first and second hoppers have discharge ports at their bottoms, with the two discharge ports having the same outlet direction and equal horizontal height.

[0010] Preferably, two motors are fixedly installed on the outer shell of each feeding unit, and two augers are rotatably installed in the direction perpendicular to the bottom plate inside each of the feeding hopper one and feeding hopper two. Pulleys are fixedly installed on the output end of the motor and on the augers, and the two pulleys are connected by belt drive. Two meshing gears are fixedly installed on the ends of the two augers.

[0011] Preferably, the material distribution hopper and the bottom plate in each of the processing chambers are inclined, and the end of the material distribution hopper and the bottom plate away from the first discharge hopper is positioned higher horizontally, while the end closer to the first discharge hopper is positioned lower horizontally.

[0012] Preferably, the adjusting mechanism includes two crushing rollers rotatably mounted on the horizontal plate of the distribution hopper, and a gear II is fixedly mounted on the top of each of the two crushing rollers, and the two gear IIs mesh with each other. A reducer is fixedly mounted on the outer shell, one of the crushing rollers is fixedly connected to the output end of the reducer, and the reducer is electrically connected to the controller. The controller is electrically connected to the infrared detector, and a transmission unit for controlling the size ratio of the material is provided between the feed pipe and the crushing roller.

[0013] Preferably, the transmission unit includes a frustum-shaped feed trough opened in the feed pipe, a frustum-shaped grinding wheel rotatably disposed in the feed trough, a gear three rotatably disposed on the top of the outer shell and meshing with gear two, and a connecting rod eccentrically disposed on gear three, and the connecting rod is fixedly connected to the grinding wheel, the connecting rod passing through the center of the grinding wheel.

[0014] Preferably, each set of feeding mechanisms includes two augers rotating in opposite directions, and the two auger spirals are arranged in opposite directions.

[0015] Preferably, one of the feeding mechanisms is fixedly provided with a long plate, the bottom of which is fixedly provided at the feed inlet of the hopper, and the top of which is fixedly provided at the bottom of the feeding hopper.

[0016] A road asphalt mixture recycling and processing device includes the following steps:

[0017] S1. When using the device, install and fix it in a suitable position, and then fill the pre-screened and crushed old asphalt material into the processing chamber inside the device through the feed port.

[0018] S2. Since the materials still have differences in size after the initial screening, some smaller materials are screened through the screening holes on the hopper and fall into the small particle chamber. The larger materials are then passed through the large particle chamber, and the smaller materials are in the small particle chamber. The motor is started, which causes the pulley fixed on the motor output end to rotate. The belt drives the auger to rotate, and the auger transports the materials in the processing chamber. This ensures that the materials in both reinforced chambers can be discharged through the discharge port at the bottom of the hopper. The rotating shaft stacks the materials in the two processing chambers layer by layer, ensuring that the new and old materials can be mixed evenly and shortening the mixing and processing time.

[0019] S3. When the infrared detector in the small particle chamber detects a decrease in the material content, it transmits a signal to the controller. The controller then controls the reducer to rotate. This reducesr drives the crushing roller at its output end to rotate. The crushing roller, through gear two, drives another crushing roller to rotate, partially crushing the large particles in the large particle chamber to fill the small particle chamber. When the second gear rotates, it drives the third gear meshing with it to rotate. The third gear drives the grinding wheel eccentrically set on its end face to rotate, partially crushing the material in the feed pipe, thereby increasing the proportion of smaller-sized materials in the added material. When the infrared detector in the large particle chamber detects that the material content is too low, the controller shuts down the reducer to ensure normal operation of the device.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] 1. This device enables the simultaneous processing of new and old asphalt materials through two processing chambers set on the outer shell. By rotating the shaft, the materials in the two processing chambers are rotated and spread out through the discharge port, making the mixture between the new and old materials more uniform.

[0022] 2. To ensure the material content in the large and small particle chambers within the processing chamber, during operation, when the infrared detector in the small particle chamber detects that the amount of aggregate inside is too low, it transmits a signal to the controller, which then starts the reducer. The reducer drives the crushing roller in the large particle chamber to rotate, locally crushing the larger particles in the large particle chamber, thereby increasing the proportion of smaller particles. When the infrared detector in the large particle chamber detects that the amount of aggregate inside is low, it shuts down the reducer to ensure the content of larger aggregates. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a top view of the structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0027] Figure 5 The structure of this invention Figure 4 Enlarged structural diagram at point A in the middle;

[0028] Figure 6 The structure of this invention Figure 4 Enlarged structural diagram at point B;

[0029] Figure 7 This is a schematic diagram of the transmission unit structure in the present invention.

[0030] In the diagram: 1. Outer shell; 2. Rotating shaft; 3. Processing chamber; 4. Feed hopper one; 5. Screwdriver; 6. Baffle; 7. Motor; 8. Dividing hopper; 9. Screening hole; 10. Feed pipe; 11. Large particle chamber; 12. Small particle chamber; 13. Crushing roller; 14. Reducer; 15. Discharge port; 16. Pulley; 17. Gear one; 18. Gear two; 19. Feed trough; 20. Roller; 21. Gear three; 22. Connecting rod; 23. Long plate; 24. Horizontal plate; 25. Vertical plate; 26. Feed hopper two. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] This invention provides a road asphalt mixture recycling processing device. It utilizes two chambers to simultaneously process both new and old asphalt materials. A rotating shaft drives the material from both chambers to be discharged through the outlet, resulting in a more uniform mixture. To ensure sufficient material content in both the large and small particle chambers, during operation, when an infrared detector in the small particle chamber detects insufficient aggregate, it transmits a signal to the controller. The controller then activates a reducer, which drives the crusher in the large particle chamber. The rotating rollers locally crush larger materials in the large particle chamber, thereby increasing the proportion of smaller materials. When the infrared detector in the large particle chamber detects that the amount of aggregate inside is low, the reducer is shut off to ensure the content of large aggregate. This solves the problem that in the existing technology, the general asphalt mixture preparation is an integrated process, which makes it difficult to adjust the proportion of different aggregate sizes in the aggregate during the production process. Moreover, when mixing, asphalt and mineral aggregates are prone to sedimentation and stratification according to density, which leads to uneven mixing and poor hardness. Therefore, this device still has certain shortcomings.

[0033] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0034] Reference Figure 1-2 A road asphalt mixture recycling processing device includes a shell 1, a bottom plate fixedly installed at the bottom end of the shell 1, a rotating shaft 2 fixedly installed vertically at the center of the bottom plate, and two feeding units fixedly installed on the inner side wall of the shell 1. The two feeding units are fixedly connected to the outer peripheral surface of the rotating shaft 2 and divide the interior of the shell 1 into two identical processing chambers 3.

[0035] A material distribution hopper 8 is fixedly installed on the inner wall of the processing chamber 3. The material distribution hopper 8 is composed of a horizontal plate 24 in the horizontal direction and a vertical plate 25 in the vertical direction. Multiple screening holes 9 are opened on both the horizontal plate 24 and the vertical plate 25 on the material distribution hopper 8. The space formed by the horizontal plate 24 and the vertical plate 25 in the processing chamber 3 is a large particle chamber 11 for processing large particle aggregates. The space between the outer wall of the horizontal plate 24 and the vertical plate 25 and the inner wall of the outer shell 1 is a small particle chamber 12 for processing small particle aggregates. A first feeding hopper 4 is fixedly installed on the side wall of the large particle chamber 11, and a second feeding hopper 26 is fixedly installed on the side wall of the small particle chamber 12.

[0036] Reference Figure 2-4The first hopper 4 and the second hopper 26 are symmetrically arranged along the axis of rotation 2. The bottom of the first hopper 4 and the second hopper 26 are both provided with discharge ports 15, and the outlet directions of the two discharge ports 15 are the same and the horizontal height is equal. The first hopper 4, which is fixedly installed on the outer shell 1, can process and discharge the material in the processing chamber 3. The two symmetrically arranged first hoppers 4 along the axis of rotation 2 divide the space inside the outer shell 1 into two processing chambers 3 of the same size, so that the original ground asphalt and the newly processed asphalt can be put into different processing chambers 3 for processing before proceeding to the next step.

[0037] Four augers 5 are rotatably installed in the hopper 4 in a direction perpendicular to the bottom plate. Baffles 6 are fixedly installed in the hopper 4 in a direction parallel to the augers 5. The baffles 6 divide the four augers 5 into two groups of guiding mechanisms. The baffles 6 in the hopper 4 divide the hopper 4 into two feeding zones, and the materials in the two feeding zones will not be mixed.

[0038] Reference Figure 4-6 Two motors 7 are fixedly installed on the outer shell 1 of each feeding unit. Within each motor 7, two augers 5 are rotatably mounted perpendicular to the bottom plate in the direction perpendicular to the bottom plate. Pulleys 16 are fixedly installed on the output end of each motor 7 and on each auger 5, and the two pulleys 16 are connected by a belt drive. Two meshing gears 17 are fixedly installed at the ends of the two augers 5. When the motor 7 is started, the augers 5 fixedly installed at the output end of the motor 7 rotate. Each auger 5 drives the gears 17 at its end to rotate, and through the two gears 17, drives the other auger 5 to rotate. This allows the two augers 5 in the same material guiding mechanism to rotate simultaneously when the motor 7 is started, thus completing the transportation of materials within the processing chamber 3.

[0039] A material distribution hopper 8 is fixedly installed on the inner wall of the processing chamber 3.

[0040] Reference Figure 2-4 The material distribution hopper 8 and the bottom plate in each processing chamber 3 are inclined. The end of the material distribution hopper 8 and the bottom plate away from the discharge hopper 4 is at a higher horizontal position, and the end closer to the discharge hopper 4 is at a lower horizontal position. By setting the bottom plate and the material distribution hopper 8 in the processing chamber 3 in an inclined position, the material on the material distribution hopper 8 can slide down the bottom plate of the material distribution hopper 8 due to its own gravity when processing asphalt material, and finally fall into the lower discharge hopper 4, and then be discharged through the discharge hopper 4.

[0041] The large particle chamber 11 is equipped with an adjustment mechanism for replenishing the aggregate in the small particle chamber 12.

[0042] Reference Figure 3 , Figure 4 and Figure 7The adjusting mechanism includes two crushing rollers 13 rotatably mounted on the distribution hopper 8, with gears 18 fixedly mounted on the top of each roller 13 and meshing with each other. One crushing roller 13 is fixedly connected to the output end of a reducer 14, which is electrically connected to a controller. The controller is also electrically connected to an infrared detector. A transmission unit for controlling the material size ratio is provided between the feed pipe 10 and the crushing roller 13. When the asphalt material enters the processing chamber 3, smaller asphalt aggregates fall into the small particle chamber 12 through the screening holes 9 on the distribution hopper 8. Larger aggregates, unable to pass through the screening holes 9, remain in the large particle chamber 11. During processing, smaller aggregates often increase the fit between various or even large aggregates, thereby increasing the internal friction angle between the aggregates. To improve the strength of the mixed asphalt, the consumption of small-sized asphalt aggregate is often much greater than that of large-sized asphalt aggregate in the actual processing. After a certain period of processing, when the infrared detector in the small particle chamber 12 detects that the material content inside is too low, it transmits the detected signal to the controller. The controller then processes the received signal and controls the reducer 14 to rotate, causing the crushing roller 13 fixed on the output end of the reducer 14 to rotate. Another crushing roller 13 is driven to rotate by the gear 18 to achieve local crushing of the asphalt aggregate in the large particle chamber 11, thereby increasing the material in the small particle chamber 12. During the crushing process, when the infrared detector in the large particle chamber 11 detects that the aggregate content inside is too low, the controller controls the reducer 14 to stop operating, ensuring a stable material ratio between the large particle chamber 11 and the small particle chamber 12.

[0043] Reference Figure 3 , Figure 5 and Figure 7The transmission unit includes a frustum-shaped feed trough 19 opened in the feed pipe 10. A frustum-shaped grinding wheel 20 is rotatably arranged in the feed trough 19, and the grinding wheel 20 is generally frustum-shaped with a smaller top and a larger bottom. A gear 21 that meshes with gear 28 is rotatably arranged on the top of the outer shell 1, and a connecting rod 22 is eccentrically arranged on gear 321. The connecting rod 22 is fixedly connected to the grinding wheel 20 and passes through the center of the grinding wheel 20. When the aggregate content in the small particle chamber 12 is too low, the controller starts the reducer 14 to drive the crushing roller 13 to rotate. When the crushing roller 13 rotates, it drives the gear 321 that meshes with it to rotate through gear 28. When rotating, the connecting rod 22, which is eccentrically mounted on the end face of gear 21, rotates. When the connecting rod 22 rotates, the grinding wheel 20, which is fixedly mounted on the connecting rod 22, rotates. The grinding wheel 20 rotates in the feed trough 19 to crush the aggregate in the feed pipe 10. Since a single grinding wheel 20 cannot completely crush the aggregate passing through the feed trough 19 when rotating in the feed trough 19, it increases the proportion of smaller aggregates in the aggregate. This ensures that when the infrared detector detects that the aggregate content in the small particle chamber 12 is too low, the aggregate in the small particle chamber 12 can be filled by increasing the proportion of small aggregates in the feed and locally crushing the large aggregates in the large particle chamber 11, thus ensuring the normal operation of the device.

[0044] Reference Figure 4-6 Each set of material guiding mechanisms includes two augers 5 rotating in opposite directions, and the two augers 5 spiral bodies are set in opposite directions. By setting two augers 5 rotating in opposite directions in each set of material guiding mechanisms, it is ensured that the aggregate can be pushed to one end when the augers 5 rotate.

[0045] Reference Figure 3-4 One of the feeding mechanisms is fixedly equipped with a long plate 23, and the bottom of the long plate 23 is fixedly installed at the inlet of the feeding hopper 4. The top of the long plate 23 is fixed to the bottom of the distribution hopper 8. Since the large particle chamber 11 in the device is located above the small particle chamber 12, and the aggregate in both the large particle chamber 11 and the small particle chamber 12 must be discharged through the feeding hopper 4, in order to prevent the materials in the two chambers from mixing, the feeding hopper 4 is divided into two feeding mechanisms by the baffle 6. However, since the large particle chamber 11 is located above the small particle chamber 12, the feeding hopper 4 at the bottom of the large particle chamber 11 is in an open or closed state. The long plate 23 is set here to cover the gap here, avoid the mixing of aggregates, and thus ensure the normal operation of the device.

[0046] Working principle:

[0047] S1. When using the device, install and fix it in a suitable position, and then fill the processing chamber 3 inside the device with the pre-screened and crushed old asphalt material through the external discharge pipe and the device's inlet.

[0048] S2, since the materials still have differences in size after the initial screening, some smaller materials are screened through the screening holes 9 on the hopper 8 and fall into the small particle chamber 12. The larger materials are then screened through the large particle chamber 11, while the smaller materials are in the small particle chamber 12. The motor 7 is started, which causes the pulley 16 fixed on the output end of the motor 7 to rotate. The pulley 5 is driven to rotate through the belt. The auger 5 transports the materials in the processing chamber 3, so that the materials in both reinforced chambers can be discharged through the discharge port 15 at the bottom of the hopper 4. The rotating shaft 2 stacks the materials in the two processing chambers 3 layer by layer, which ensures that the new and old materials can be mixed evenly and shortens the mixing and processing time.

[0049] S3, when the infrared detector in the small particle chamber 12 detects a decrease in the material content inside, it transmits a signal to the controller. The controller controls the reducer to rotate, which in turn drives the crushing roller 13 on its output end to rotate. The crushing roller 13 drives another crushing roller 13 to rotate through gear 2 18, and locally crushes the large particles in the large particle chamber 11 to fill the small particle chamber 12. When the second gear rotates, it drives the third gear meshing with it to rotate. The third gear drives the grinding wheel 20 eccentrically set on its end face to rotate, and locally crushes the material in the feed pipe 10, thereby increasing the proportion of smaller-sized materials in the added material. When the infrared detector in the large particle chamber 11 detects that the material content inside is too low, the controller shuts down the reducer 14 to ensure the normal operation of the device.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A road asphalt mixture recycling processing device, comprising a shell (1), characterized in that, The outer shell (1) is a shell that runs through the top and bottom. A base plate is fixedly installed at the bottom of the outer shell (1). A rotating shaft (2) is fixedly installed in the vertical direction at the center of the base plate. Two feeding units are fixedly installed on the inner side wall of the outer shell (1). Both feeding units are fixedly connected to the outer peripheral surface of the rotating shaft (2) and divide the interior of the outer shell (1) into two identical processing chambers (3). A material distribution hopper (8) is fixedly installed on the inner wall of the processing chamber (3). The material distribution hopper (8) is composed of a horizontal plate (24) in the horizontal direction and a vertical plate (25) in the vertical direction. Both the horizontal plate (24) and the vertical plate (25) on the material distribution hopper (8) are provided with multiple screening holes (9). The space formed by the horizontal plate (24) and the vertical plate (25) on the material distribution hopper (8) in the processing chamber (3) is for processing large-particle aggregates. The space between the outer wall of the horizontal plate (24) and the vertical plate (25) and the inner wall of the outer shell (1) is a small particle chamber (12) for processing small particle aggregates. A feeding hopper one (4) is fixedly installed on the side wall of the large particle chamber (11), and a feeding hopper two (26) is fixedly installed on the side wall of the small particle chamber (12). An adjustment mechanism for replenishing the aggregates in the small particle chamber (12) is provided in the large particle chamber (11). The bottom of the first feeding hopper (4) and the second feeding hopper (26) are provided with discharge ports (15). Two motors (7) are fixedly installed on the outer shell (1) of each feeding unit. Two augers (5) are rotatably installed in the first feeding hopper (4) and the second feeding hopper (26) in a direction perpendicular to the bottom plate. Each set of guiding mechanisms includes two augers (5) with opposite rotation directions. The rotation directions of the spiral bodies of the two augers (5) are opposite. A long plate (23) is fixedly installed on one of the guiding mechanisms. The bottom of the long plate (23) is fixedly installed at the inlet of the first feeding hopper (4). The top of the long plate (23) is fixed to the bottom of the dividing hopper (8). The long plate can prevent the materials in the two chambers from being mixed. The materials in the two processing chambers are discharged through the discharge port at the bottom of the feeding hopper. The rotating shaft stacks the materials in the two processing chambers layer by layer.

2. The road asphalt mixture recycling and processing device according to claim 1, characterized in that, The first hopper (4) and the second hopper (26) are symmetrically arranged along the axis of rotation (2), and the two discharge ports (15) have the same outlet direction and the same horizontal height.

3. The road asphalt mixture recycling processing device according to claim 1, characterized in that, Both the output end of the motor (7) and the auger (5) are fixedly provided with pulleys (16), and the two pulleys (16) are connected by belt drive, and two meshing gears (17) are fixedly provided at the ends of the two augers (5).

4. The road asphalt mixture recycling processing device according to claim 1, characterized in that, The material distribution hopper (8) and the bottom plate in each of the processing chambers (3) are inclined, and the end of the material distribution hopper (8) and the bottom plate away from the first discharge hopper (4) is at a higher horizontal position, while the end closer to the first discharge hopper (4) is at a lower horizontal position.

5. A road asphalt mixture recycling processing device according to claim 1, characterized in that, The adjustment mechanism includes two crushing rollers (13) rotatably mounted on the cross plate (24) of the distribution hopper (8), and two gears (18) are fixedly mounted on the top of each of the two crushing rollers (13), and the two gears (18) mesh with each other. A reducer (14) is fixedly mounted on the outer shell (1), one of the crushing rollers (13) is fixedly connected to the output end of the reducer (14), and the reducer (14) is electrically connected to the controller. The controller is electrically connected to the infrared detector. A transmission unit for controlling the size ratio of materials is provided between the feed pipe (10) and the crushing roller (13).

6. A road asphalt mixture recycling processing device according to claim 5, characterized in that, The transmission unit includes a frustum-shaped feed trough (19) opened in the feed pipe (10), a frustum-shaped grinding wheel (20) is rotatably arranged in the feed trough (19), a gear three (21) that meshes with gear two (18) is rotatably arranged on the top of the outer shell (1), and a connecting rod (22) is eccentrically arranged on gear three (21), and the connecting rod (22) is fixedly connected to the grinding wheel (20), and the connecting rod (22) passes through the center of the grinding wheel (20).

7. The operation method of the road asphalt mixture recycling processing device according to claim 3, characterized in that, Includes the following steps: S1. When using the device, install and fix it in a suitable position, and then fill the pre-screened and crushed old asphalt material into the processing chamber inside the device through the feed port. S2. Since the materials still have differences in size after the initial screening, some smaller materials are screened through the screening holes on the hopper and fall into the small particle chamber. The large particle chamber contains larger materials, and the small particle chamber contains smaller materials. The motor is started, which causes the pulley fixed on the motor output end to rotate. The belt drives the auger to rotate, and the auger transports the materials in the processing chamber. This allows the materials in both processing chambers to be discharged through the discharge port at the bottom of the hopper. The rotating shaft stacks the materials in the two processing chambers layer by layer.

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