Regenerated mixture and preparation method thereof

Abstract

The invention discloses a regenerated mixture and a preparation method thereof, and relates to the technical field of asphalt regeneration, in particular to a regenerated mixture and a preparation method thereof.The regenerated mixture comprises a microwave heating device, the microwave heating device comprises a heating outer box and first recycling boxes arranged on the left side and the right side of the heating outer box, and a heating inner box capable of vibrating is arranged in the heating outer box; a plurality of separating plates are arranged in the heating inner box from top to bottom, and the inclination angle of the separating plates can be adjusted according to the weight of materials of the separating plates. A self-adaptive mechanism composed of a first connecting plate, a first tension spring and a second spring at the head end and the tail end of the separation plate can promote periodic excitation force output by a vibration motor to promote the heating inner box and the driving separation plate to form directional vibration, friction force between waste asphalt aggregate and the plate surface is overcome through inertia force, and the waste asphalt aggregate moves at a constant speed in the inclined direction; and the problem of movement delay caused by viscosity is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt regeneration, and more particularly to a regenerated mixture and a preparation method thereof. Background Art

[0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a kind of high-viscosity organic liquid, mostly existing in the form of liquid or semi-solid petroleum. It has a black surface and is soluble in carbon disulfide and carbon tetrachloride. Asphalt is an organic gelling material that is waterproof, moisture-proof and corrosion-resistant. Asphalt can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt: among them, coal tar asphalt is a by-product of coking. Petroleum asphalt is the residue after crude oil distillation. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth's crust. Asphalt is mainly used in industries such as coatings, plastics, rubber, and road paving; When asphalt is paved on the road, it needs to be renovated within a certain period of time. Therefore, in order to save resources, asphalt pavement recycling technology refers to the process of digging, recycling, heating, crushing and screening the old asphalt pavement that needs to be renovated or abandoned by special pavement recycling equipment, and then remixing it with regeneration agent, new asphalt, new aggregates in a certain proportion to form a mixture. The recycling of waste asphalt mixture not only reduces the demand for stone and asphalt in road construction and reduces road construction costs, but also has important significance for mineral resources and environmental protection. It is an important way to achieve sustainable development of road transportation. At present, microwave heating technology is a key way to solve the problem of waste asphalt recycling. For example, the microwave heating device for recycled asphalt mixtures, with application number 202310426927.0, processes waste asphalt and then mixes it into a new asphalt mixture. The technology disclosed in this patent shows that the microwave heating device can also melt waste asphalt and separate it from aggregates. However, the viscosity of the melted asphalt makes it less efficient for aggregates to move on the inclined separation plate. Furthermore, the method of relying on the vibration generated by the falling material impacting the separation plate to drive material movement is ineffective, especially when the incoming waste asphalt is unstable (such as when the front-end crushing and screening equipment is temporarily overloaded or the material conveying speed suddenly increases, resulting in a sudden increase in the amount of waste asphalt entering the heating device). In the prior art, the springs connected to the separation plate will be over-compressed due to the excessive instantaneous load, causing the vibration amplitude to be significantly attenuated when the subsequent material falls, further exacerbating the problem of waste asphalt clogging on the separation plate. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a recycled mixed material and a preparation method thereof, which solves the problems raised in the above background technology.

[0004] The technical solutions of the present invention are as follows: To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for preparing a recycled mixed material, comprising the following steps: S1: waste asphalt is placed in a microwave heating device to convert the asphalt attached to the aggregate from solid to liquid; S2: flushing and cleaning the waste asphalt; S3: The aggregate is heated and mixed with the improved asphalt, new asphalt and new aggregate.

[0005] The microwave heating device includes a heating outer box and a first recovery box arranged on the left and right sides of the heating outer box, a vibrating heating inner box is arranged in the heating outer box, and a plurality of separation plates are arranged from top to bottom in the heating inner box, which can adjust their own inclination angle according to the weight of the material, and the plurality of separation plates correspond to each other from top to bottom, the upper surface of the separation plate is fixedly connected to the enclosure cylinder, the tail of the lower surface of the separation plate is rotatably connected to the receiving plate with one end extending to the outside of the heating outer box, and the upper surface of the separation plate is evenly penetrated with a plurality of material drips that can promote the separation To the separation port on the receiving plate, the inner wall of the separation port is slidably connected with multiple arc plates, and a retractable main top column is provided at the intersection of the diagonals of the four adjacent separation ports every week on the upper surface of the separation plate. An impact column with one end that can abut on the main top column and the other end that can abut on the arc plate is slidably connected inside the separation plate, and a pushing block that can cause the impact column to slide toward the main top column is fixedly connected to the bottom of the outer peripheral surface of the arc plate. The top of the main top column is provided with a top ring that can extend outward, and a driving ball that can provide power to the top ring is provided in the main top column.

[0006] Preferably, the upper and lower surfaces of the heating inner box are both provided with a plurality of first springs, one end of each of which is fixedly connected to the heating outer box, and the upper surface of the heating inner box is provided with a vibration motor for driving the vibration thereof.

[0007] Preferably, both ends of the separation plate are rotatably connected to a first connecting plate with one end slidably connected to the heating inner box, and the upper and lower inner walls of the heating inner box near the tail end of the separation plate are fixedly connected to the first support plate, and the lower inner wall of the heating inner box near the head of the separation plate is also fixedly connected to the first support plate, and the upper and lower surfaces of the first connecting plate rotatably connected to the tail end of the separation plate are fixedly connected to the first tension spring and the second spring respectively, wherein the other ends of the first tension spring and the second spring are respectively arranged on the corresponding first support plates, and the lower surface of the first connecting plate rotatably connected to the head of the separation plate is fixedly connected to the second spring with one end arranged on the corresponding first support plate.

[0008] Preferably, a plurality of first discharge ports are provided on the left and right sides of the heating outer box, and a second discharge port corresponding to the first discharge port is provided on the left and right sides of the heating inner box, and the free end of each receiving plate passes through the corresponding second discharge port and the first discharge port in sequence, and the head of the lower surface of the last receiving plate from top to bottom is rotatably connected to the outflow plate, and the free end of the outflow plate passes through the corresponding second discharge port and the first discharge port in sequence.

[0009] Preferably, a plurality of first sliding grooves are evenly opened on the upper surface of the separation plate, and a plurality of main top columns are respectively slidably connected in the corresponding plurality of sliding grooves, and the bottom end of the main top column is fixedly connected to a fourth spring having one end arranged on the lower surface of the first sliding groove.

[0010] Preferably, the inner wall of each separation port is slidably connected with four arc-shaped plates, and the four arc-shaped plates are abutted in sequence at both ends in the circumferential direction, and a plurality of second sliding grooves are evenly opened on the top of the inner wall of the separation port, and the top of the outer circumference of the arc-shaped plate is fixedly connected with a second support plate with one end slidingly connected to the second sliding groove, and the lower surface of the second support plate is fixedly connected with a third spring with one end arranged on the bottom surface of the second sliding groove.

[0011] Preferably, a plurality of sliding holes are provided at the bottom of the inner circumference of the separation port, each of the sliding holes can respectively cause the first sliding groove to communicate with the corresponding separation port, and each impact column is respectively slidably connected in the corresponding sliding hole, and the pushing block is a wedge-shaped block inclined upward, and the inclined surface of the pushing block can abut against one end of the impact column.

[0012] Preferably, both front and rear ends of the lower surface of the top ring are fixedly connected to a second tension spring with one end arranged on the main top column.

[0013] Preferably, the interior of the main top column is a cavity, and the top end of the main top column cavity is rotatably connected to a hollow limiting ball, and the driving ball is placed in the cavity. The outer surface of the driving ball is fixedly connected to a driving rod with one end passing through the limiting ball and capable of abutting against the top ring.

[0014] Preferably, the inner wall of the limiting ball is slidably connected to a third support plate, and the driving rod passes through the third support plate. The third support plate and the driving rod are fixedly connected, and the upper surface of the third support plate is fixedly connected to a fifth spring having one end arranged on the inner wall of the limiting ball.

[0015] Beneficial effects The present invention provides a recycled mixed material and a preparation method thereof, which has the following beneficial effects: 1. The recycled mixture and its preparation method, through the elastic connection setting between the vibration motor and the heating inner box, combined with the adaptive mechanism consisting of the first connecting plate, the first tension spring and the second spring at the two ends of the separation plate, can cause the periodic excitation force output by the vibration motor to cause the heating inner box and the driving separation plate to form directional vibration, and use the inertial force to overcome the friction between the waste asphalt aggregate and the plate surface, so that it moves at a uniform speed in the inclined direction, avoiding the movement delay problem caused by viscosity; at the same time, when the weight of the material changes, the inclination angle of the separation plate is dynamically adjusted - when the material is heavier, the inclination angle is reduced, and the heating residence time is extended to ensure sufficient melting; when the material is lighter, an efficient transmission rhythm is maintained.

[0016] 2. The recycled mixture and its preparation method are arranged with a linkage mechanism of an arc plate, a main top column, an impact column and a driving ball that are slidably connected to the inner wall of the separation port. When the molten asphalt adheres to the inner circumference of the arc plate due to viscosity, its weight increases and compresses the third spring, driving the push block to push the impact column and the main top column to produce regular collisions, using mechanical impact force to destroy the surface tension of the asphalt and accelerate dripping to the receiving plate; at the same time, the driving ball in the main top column automatically switches the force transmission mode under different inclination angles of the separation plate through the rotation constraint of the limit ball and the gravity self-stabilization effect - at large inclination angles and light loads, the inertia force of the driving ball pushes out the top ring through the driving rod, exerting an impact force on the aggregate to cause it to rotate and flip, thereby enhancing the asphalt stripping; at small inclination angles and heavy loads, the driving rod is disengaged from the top ring, and the vibration of the main top column itself continues to act on the aggregate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the heating outer box and the heating inner box of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlarged in the middle; Figure 4 It is a schematic diagram of a partial cross-sectional structure of a separation plate of the present invention when viewed from the front; Figure 5 It is a schematic cross-sectional structure diagram of the main top column of the present invention from the right side; Figure 6 It is a schematic diagram of the partial structure of the separation plate of the present invention from a top view.

[0018] In the figure: 1. Heating outer box; 2. Feed port; 3. First recovery box; 4. Heating inner box; 5. First spring; 6. Separation plate; 7. Receiving plate; 8. First connecting plate; 9. Enclosing cylinder; 10. First support plate; 11. Second spring; 12. First tension spring; 13. First discharge port; 14. Second discharge port; 15. Arc plate; 16. Main top column; 17. Fourth spring; 18. Driving ball; 19. Limiting ball; 20. Fifth spring; 21. Driving rod; 22. Third support plate; 23. Top ring; 25. Second tension spring; 26. Second support plate; 27. Third spring; 28. Push block; 29. ​​Impact column; 30. Outflow plate. DETAILED DESCRIPTION

[0019] The following will provide a clear and complete description of 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1 While existing microwave heating devices for recycled asphalt mixtures can process waste asphalt, the viscosity of the melted asphalt results in inefficient aggregate movement across the inclined separation plate. Furthermore, relying on the vibration generated by falling material impacting the separation plate to drive material movement is ineffective. This is particularly true when the incoming waste asphalt is unstable (e.g., due to a brief overload of the front-end crushing and screening equipment or a sudden increase in material conveying speed, resulting in a sudden increase in the amount of waste asphalt entering the heating device). The springs connected to the separation plate in the prior art can be overcompressed due to the excessive instantaneous load, significantly attenuating the vibration amplitude when subsequent material falls, further exacerbating the problem of waste asphalt clogging on the separation plate. This embodiment was invented to address these issues.

[0021] See also Figures 1 to 6 The present invention provides a technical solution: a method for preparing a recycled mixed material, comprising the following steps: S1: waste asphalt is placed in a microwave heating device to convert the asphalt attached to the aggregate from solid to liquid; S2: flushing and cleaning the waste asphalt; S3: heating and mixing the aggregate with the improved asphalt, new asphalt and new aggregate; The preparation method of the recycled mixture is the same as the treatment method of waste asphalt in the microwave heating device of a recycled asphalt mixture with application number 202310426927.0. The subsequent cleaning and mixing of waste asphalt into new asphalt are also the same, so they will not be described in detail.

[0022] The microwave heating device includes a heating outer box 1 and a first recycling box 3 arranged on the left and right sides of the heating outer box 1, wherein the working principle of the first recycling box 3 is the same as that of a microwave heating device for recycled asphalt mixture with application number 202310426927.0, so it will not be described in detail. A vibrating heating inner box 4 is provided in the heating outer box 1, and a microwave heating device is provided in the heating inner box 4. Through the setting of the microwave heating device, the waste asphalt entering the heating inner box 4 can be heated. A plurality of separation plates 6 that can adjust their own inclination angle according to the weight of the material are provided from top to bottom in the heating inner box 4, and the plurality of separation plates 6 correspond to each other from top to bottom, wherein the tail end of the separation plate 6 is provided with a drop port, so that the material will fall from the drop port of the upper separation plate 6 to the head of the next separation plate 6, and the upper surface of the separation plate 6 is fixedly connected to a blocking cylinder 9. Through the setting of the blocking cylinder 9, the material can be prevented from falling from one side of the separation plate 6, separating The tail of the lower surface of the plate 6 is connected to the receiving plate 7 with one end extending to the outside of the heating outer box 1 through a hinge shaft, so that the asphalt solution dripping onto the receiving plate 7 can flow from the free end of the receiving plate 7 to the outside of the heating outer box 1 and enter the first recovery box 3 corresponding thereto, and the upper surface of the separation plate 6 is evenly penetrated with a plurality of separation ports that can promote the separated materials to drip onto the receiving plate 7, and the inner wall of the separation port is slidably connected with a plurality of arc plates 15, and the upper surface of the separation plate 6 is slidable to the adjacent four separation ports. A retractable main top column 16 is provided at the intersection of the diagonal lines of the mouth. A collision column 29 is slidably connected inside the separation plate 6, one end of which can abut against the main top column 16 and the other end of which can abut against the arc plate 15. The bottom of the outer peripheral surface of the arc plate 15 is fixedly connected with a pushing block 28 which can cause the collision column 29 to slide toward the main top column 16. The top end of the main top column 16 is provided with a top ring 23 that can extend outward, and a driving ball 18 that can provide power to the top ring 23 is provided inside the main top column 16.

[0023] See also Figures 1 to 2, the upper and lower surfaces of the heating inner box 4 are both provided with a plurality of first springs 5, one end of which is fixedly connected to the heating outer box 1, and the upper surface of the heating inner box 4 is provided with a vibration motor to drive its vibration, wherein a first feed port 2 is provided on the upper surface of the heating outer box 1, and a second feed port is correspondingly opened on the upper surface of the heating inner box 4 just below the first feed port 2, and a sealed channel is formed between the two through a flexible elastic connecting tube. The elastic connecting tube is made of a soft and gentle material, with its upper end sealedly connected to the inner wall of the first feed port 2, and its lower end fixed to the edge of the second feed port, which can not only ensure that the waste asphalt material is smoothly introduced from the heating outer box 1 into the heating inner box 4, but also absorb the displacement deviation of the heating inner box 4 during vibration through the flexible structure, to prevent the material from falling into the gap area between the heating outer box 1 and the heating inner box 4 during the relative movement of the heating outer box 1 and the heating inner box 4. At the same time, because the material introduced into the heating inner box 4 is a room temperature material, it will not cause high temperature damage to the flexible elastic connecting tube; The vibration motor causes the heating inner box 4 to vibrate, which in turn causes the separation plate 6 and receiving plate 7 installed inside the heating inner box 4 to vibrate synchronously. This causes the waste asphalt material on the separation plate 6 to move toward the rear at a uniform speed due to the vibration. Simultaneously, the melted asphalt solution drips down from the separation port onto the receiving plate 7.

[0024] See also Figures 2 to 4 , both ends of the separation plate 6 are rotatably connected to the first connecting plate 8 with one end slidingly connected to the heating inner box 4 through a hinge shaft, and the upper and lower parts of the inner wall of the heating inner box 4 near the tail end of the separation plate 6 are fixedly connected to the first support plate 10, and the lower part of the inner wall of the heating inner box 4 near the head of the separation plate 6 is also fixedly connected to the first support plate 10, and the upper and lower surfaces of the first connecting plate 8 rotatably connected to the tail end of the separation plate 6 are respectively fixedly connected to the first tension spring 12 and the second spring 11, wherein the other ends of the first tension spring 12 and the second spring 11 are respectively arranged on the corresponding first support plate 10, and the lower surface of the first connecting plate 8 rotatably connected to the head of the separation plate 6 is fixedly connected to the second spring 11 with one end arranged on the corresponding first support plate 10; When the amount of waste asphalt increases within the heating inner box 4, the weight of the material carried by the separation plate 6 increases, driving the first connecting plate 8, to which it is rotatably connected, to move downward synchronously. Because the first connecting plate 8 at the rear end is pulled upward by the first tension spring 12 and supported by the second spring 11, its downward movement is smaller than that at the front end, allowing the separation plate 6 to form an adaptive tilt angle adjustment: when the material is heavier, the tilt angle decreases, extending the material's residence time on the surface of the separation plate 6 to ensure sufficient heating; when the material is lighter, the tilt angle is restored under the reset force of the first tension spring 12 and the second spring 11, maintaining normal processing efficiency. Thus, dynamic adjustment of the heating time is achieved through weight sensing, effectively avoiding the problem of insufficient heating. At the same time, the first connecting plate 8 arranged at the head end of the separation plate 6 adopts a telescopic structure. When the inclination angle of the separation plate 6 changes, the first connecting plate 8 can be telescopically adjusted accordingly, thereby ensuring that the connection structure maintains good adaptability and stability during the angle change process.

[0025] See also Figures 2 to 4 , a plurality of first discharge ports 13 are provided on both sides of the left and right sides of the heating outer box 1, and a second discharge port 14 corresponding to the first discharge port 13 is provided on both sides of the left and right sides of the heating inner box 4, and the free end of each receiving plate 7 sequentially passes through the corresponding second discharge port 14 and the first discharge port 13, and the head of the lower surface of the last receiving plate 7 from top to bottom is rotatably connected to the outflow plate 30 through the hinge shaft, and the free end of the outflow plate 30 sequentially passes through the corresponding second discharge port 14 and the first discharge port 13; The receiving plate 7 is connected to the second discharge port 14 by a sliding mechanism, with its lower surface tightly fitting the lower surface of the second discharge port 14 and extending only through the first discharge port 13 without contacting it. When the inner heating chamber 4 vibrates, the receiving plate 7 vibrates synchronously with it, but always maintains a non-contacting position with the first discharge port 13. Furthermore, when the separator plate 6 moves downward due to changes in the weight of the material, the receiving plate 7 slides and rotates synchronously with the point of penetration of the first discharge port 13. This movement does not mechanically interfere with the normal tilt adjustment and displacement of the separator plate 6.

[0026] At the same time, based on the principle of vibration transmission, the periodic exciting force generated by the vibration motor causes the separation plate 6 to form directional vibration. The inertial force generated by it effectively overcomes the friction between the waste asphalt aggregate and the plate surface, driving the aggregate to perform forced motion along the inclined direction of the separation plate 6 and slide down at a uniform speed; at the same time, the vibration action destroys the surface tension and viscous resistance of the molten asphalt, prompting the liquid asphalt to accelerate through the separation port under the vibration acceleration component, thereby realizing efficient separation and transmission of solid-liquid two-phase materials in the vibration field.

[0027] Example 2 Although the above embodiment solves the problems of movement efficiency and clogging of waste asphalt materials on the separation plate by the vibration motor and the adaptive inclination separation plate 6, the technical bottleneck of the high-viscosity asphalt after melting being blocked from dripping at the separation port and the incomplete stripping of the residual asphalt on the aggregate surface still needs to be further optimized for the solid-liquid separation efficiency. In particular, when the asphalt solution adheres to the inner wall of the arc-shaped plate 15 of the separation port, its viscosity will significantly reduce the dripping speed, and it is difficult for the aggregate to fully expose the bonding surface during the plane sliding of the separation plate 6, resulting in limited separation effect of asphalt and aggregate. This embodiment is specially invented to solve the above problems.

[0028] See also Figures 2 to 3On the basis of the above embodiment, the technical solution adopted includes that a plurality of first chute grooves are evenly formed on the upper surface of the separation plate 6, and a plurality of main top columns 16 are slidably connected to the corresponding plurality of chute grooves, and the bottom end of the main top column 16 is fixedly connected to a fourth spring 17 having one end arranged on the lower surface of the first chute groove; When the heating inner box 4 drives the separation plate 6 to vibrate, the main top column 16 slides back and forth in the first slide groove under the action of inertia force and the elastic restoring force of the fourth spring 17, thereby forming a periodic extension and retraction movement on the surface of the separation plate 6.

[0029] See also Figures 2 to 4 The inner wall of each separation port is connected to four arc-shaped plates 15 for sliding up and down connection, wherein the outer circumferential surface of the arc-shaped plate 15 is tightly attached to the inner wall of the separation port, and the four arc-shaped plates 15 are connected in turn at both ends of the circumference, and the adjacent arc-shaped plates 15 are connected in a sliding manner, so that the four arc-shaped plates 15 in each separation port can be assembled to form a complete "cylindrical" structure, and a plurality of second sliding grooves are evenly opened on the top of the inner wall of the separation port, and the top of the outer circumferential surface of the arc-shaped plate 15 is fixedly connected to a second support plate 26 with one end slidingly connected to the second sliding groove, and the lower surface of the second support plate 26 is fixedly connected to a third spring 27 with one end arranged on the inner bottom surface of the second sliding groove.

[0030] See also Figures 2 to 4 A plurality of sliding holes are provided at the bottom of the inner circumference of the separation port, each of which can cause the first slide groove to communicate with the corresponding separation port, and each impact column 29 is slidably connected in the corresponding sliding hole, and the pushing block 28 is a wedge-shaped block inclined upward, and the inclined surface of the pushing block 28 can abut against one end of the impact column 29; Based on the principles of elastic mechanics and vibration transmission, the third spring 27 provides initial support stiffness for the curved plate 15, causing it to only produce a slight swing when the separation plate 6 vibrates. When the molten asphalt adheres to the inner circumference of the curved plate 15 due to viscosity, causing the load to increase, the curved plate 15 is compressed by gravity to displace the third spring 27 downward, driving the push block 28 fixed to its outer circumference to move synchronously. Because the push block 28 adopts an upward-slanted inclined surface structure, its displacement process pushes the impact column 29 toward the main top column 16 through the inclined surface, causing one end of the impact column 29 to protrude from the first slide groove. At this time, the main top column 16, which is in a periodic reciprocating sliding state, is affected by the vibration inertia force and the restoring force of the fourth spring 17. Its end regularly collides with the impact column 29, and the generated mechanical impact force is transmitted to the curved plate 15 through the impact column 29, destroying the viscous resistance and surface tension of the liquid asphalt, significantly increasing the drip rate of the asphalt solution through the separation port. During aggregate transport, the main top column 16 periodically extends and retracts along the surface of the separation plate 6 due to vibration inertia, exerting intermittent impact forces on the moving aggregate at its tip. Based on the principles of particle kinematics, this impact force generates an eccentric torque at the center of mass of the aggregate, causing the aggregate to rotate and flip as it moves along the inclination of the separation plate 6. This three-dimensional movement of the aggregate effectively disrupts the adhesion between the asphalt solution and the aggregate surface. Combined with the inertia differences between the solid and liquid phases in the vibration field, this allows the asphalt coated on the aggregate surface to escape more easily through the separation port, mechanically enhancing the separation efficiency of the asphalt and aggregate.

[0031] Example 3 In the above embodiment, although the linkage between the main top column 16 and the impact column 29 improves the asphalt dripping efficiency and the aggregate turning effect at the separation port, when the inclination angle of the separation plate 6 changes dynamically due to the weight of the material, there is a technical defect that the force transmission efficiency is attenuated under different inclination conditions. At a large inclination angle (light load), the main top column 16 does not extend sufficiently, resulting in a weakened impact force of the top ring 23 on the aggregate. This embodiment is specially invented to solve the above problem.

[0032] See also Figures 2 to 6 On the basis of the above embodiment, the adopted technical solution includes that the front and rear ends of the lower surface of the top ring 23 are fixedly connected to a second tension spring 25 with one end arranged on the main top column 16.

[0033] The interior of the main top column 16 is a cavity, and the top end of the cavity of the main top column 16 is rotatably connected to a hollow limiting ball 19, wherein the outer circumferential surface of the limiting ball 19 is relatively welded with a rotating shaft, and the rotating shaft is rotatably connected in the separation plate 6, so that the limiting ball 19 can only rotate in a single plane, and the driving ball 18 is placed in the cavity, and the outer surface of the driving ball 18 is fixedly connected to a driving rod 21 with one end passing through the limiting ball 19 and capable of abutting against the top ring 23. The inner wall of the limiting ball 19 is slidably connected to a third support plate 22, and the driving rod 21 passes through the third support plate 22. The third support plate 22 and the driving rod 21 are fixedly connected, and the upper surface of the third support plate 22 is fixedly connected to a fifth spring 20 with one end fixedly set on the inner wall of the limiting ball 19. The tilting setting of the separation plate 6 causes the movement trajectory of the main top column 16 to change with the inclination angle. Its shaking direction is no longer limited to the vertical direction, but produces a compound motion along the normal direction of the inclined surface. The limiting ball 19 constrains the rotational freedom of the driving ball 18 through the rotating shaft, so that it can only move within a specific plane. Combined with the mass characteristic of the driving ball 18 being much larger than the top ring 23, it ensures that the driving rod 21 always tends to a plumb state under the action of the gravity component. When the separation plate 6 vibrates, the driving ball 18 undergoes forced vibration in the cavity of the main top column 16. Its inertial force and the elastic force of the fifth spring 20 form a damping vibration effect, and the driving rod 21 then slides up and down in the limiting ball 19: when moving upward, it overcomes the tension of the second tension spring 25 to push out the top ring 23, applying an impact load to the aggregate; when moving downward, it resets under the action of the restoring force of the fifth spring 20, forming a periodic impact frequency. The kinetic energy of the driving ball 18 is transferred to the top ring 23 via the driving rod 21. Its superior mass ensures stable output of impact energy under varying tilt conditions. When the main lift column 16 decreases in extension due to the increasing inclination of the separator plate 6, the gravitational potential energy of the driving ball 18 is converted into kinetic energy by the driving rod 21, forcing the top ring 23 out through a rigid resistance relationship. This ensures that the impact force on the aggregate is not attenuated by changes in the equipment's inclination, thereby achieving adaptive matching of the extension of the top ring 23 to the motion of the aggregate. As the inclination angle of the separator plate 6 decreases (i.e., the material load increases), the component of the gravitational force of the driving ball 18 along the normal to the inclined surface increases, causing the stopper ball 19 to rotate about the axis, adjusting the angle of action of the driving rod 21. This rotational process shifts the center of mass of the driving ball 18, causing its oscillation trajectory to spatially couple with the motion trajectory of the top ring 23. This ensures that, even at low inclination angles, the driving rod 21 can still effectively transmit the inertial force of the driving ball 18 to the top ring 23 through the angle compensation of the stopper ball 19. Furthermore, when the inclination angle of the separator plate 6 decreases to a certain threshold, the driving ball 18's own weight causes the stopper ball 19 to rotate about the axis. After the driving rod 21 deflects synchronously with the stopper ball 19, its top end breaks away from rigid contact with the top ring 23. The inertial force of the driving ball 18 is no longer transmitted through the top ring 23, but instead acts directly on the main column 16. At this time, the main top column 16 returns to being the executive body for impacting the aggregate (it has always been there, but with weaker strength). Through its own periodic telescopic movement on the separation plate 6, it continues to exert impact force on the moving aggregate, ensuring the continuity and stability of the aggregate flipping and stripping effect under different working conditions.

[0034] In summary, when the recycled mixture and its preparation method are used, the waste asphalt is first put into the heating inner box 4 of the microwave heating device, and the microwave heating device quickly heats the solid asphalt attached to the surface of the aggregate to a molten state. The vibration motor continuously outputs a periodic excitation force, and the heating inner box 4 elastically connected by the first spring 5 generates directional vibration, driving the internal separation plate 6 and the receiving plate 7 to vibrate synchronously. At this time, the waste asphalt material on the separation plate 6 overcomes the friction force under the action of the vibration inertia force, and moves toward the tail end at a uniform speed along the inclined plate surface. The molten asphalt is accelerated to drip to the receiving plate 7 through the arc plate 15 structure of the separation port, and flows into the first recovery box 3 on both sides through the second discharge port 14 and the first discharge port 13, and then proceeds to the next step. The subsequent process is the same as that of a microwave heating device for recycled asphalt mixture with application number 202310426927.0, so it will not be described in detail. As the weight of the material within the heating inner chamber 4 changes, the separator plate 6 dynamically adjusts its tilt angle via an adaptive mechanism comprised of the first connecting plates 8, first tension spring 12, and second spring 11 at both ends. Heavier materials reduce the tilt angle, extending the heating dwell time; lighter materials return the first connecting plate 8 to its original position, maintaining efficient processing. During this process, the sliding connection between the receiving plate 7 and the discharge port ensures that it moves synchronously with the separator plate 6 without mechanical interference, ensuring stable transmission under varying loads. During the critical solid-liquid separation phase, the four curved plates 15 within the separation port are elastically supported by a third spring 27 and a second support plate 26. When the molten asphalt is subjected to increased load due to viscous adhesion, the curved plates 15 move downward, driving the push block 28 to push the impact column 29. This creates periodic collisions with the reciprocating movement of the main top column 16, effectively disrupting the surface tension of the asphalt and improving drip efficiency. Simultaneously, the top ring 23 at the top of the main top column 16, driven by the linkage mechanism of the drive ball 18 and the stop ball 19, operates as follows: at high angles and light loads, the inertial force of the drive ball 18 pushes the top ring 23 out through the drive rod 21, enhancing the impact and flipping of the aggregate. At low angles and heavy loads, the drive rod 21 disengages from the top ring 23, and the vibration of the main top column 16 continues to act on the aggregate, ensuring efficient separation of the asphalt and aggregate under different operating conditions. After being processed step by step by multiple layers of separation plates 6, the aggregate with desorbed asphalt enters the next level of separation plate 6 through the tail end drop port, and is finally discharged from the heating outer box 1 through the outflow plate 30, and enters the subsequent flushing and cleaning and heating mixing process with new asphalt and new aggregate, thereby forming a new mixture.

[0035] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A method for preparing a recycled mixed material, comprising the following steps: S1: waste asphalt is placed in a microwave heating device to convert the asphalt attached to the aggregate from solid to liquid; S2: flushing and cleaning the waste asphalt; S3: heating and mixing the aggregate with the improved asphalt, new asphalt and new aggregate; The microwave heating device comprises a heating outer box (1) and a first recycling box (3) arranged on the left and right sides of the heating outer box (1), and is characterized in that: a vibrating heating inner box (4) is arranged in the heating inner box (1), and a plurality of separation plates (6) are arranged from top to bottom in the heating inner box (4), which can adjust their own inclination angle according to the weight of the material, and the plurality of separation plates (6) correspond to each other from top to bottom, and the upper surface of the separation plate (6) is fixedly connected to the enclosure cylinder (9), and the tail of the lower surface of the separation plate (6) is rotatably connected to a receiving plate (7) with one end extending to the outside of the heating outer box (1), and the upper surface of the separation plate (6) is evenly penetrated by a plurality of holes that can cause the separated material to drip onto the receiving plate (7). A separation port, wherein the inner wall of the separation port is slidably connected to a plurality of arc-shaped plates (15), and a main top column (16) capable of extension and contraction is provided at the intersection of the diagonal lines of the four adjacent separation ports on the upper surface of the separation plate (6) every week, and an impact column (29) is slidably connected inside the separation plate (6), one end of which can abut against the main top column (16) and the other end of which can abut against the arc-shaped plate (15), and a pushing block (28) capable of causing the impact column (29) to slide toward the main top column (16) is fixedly connected to the bottom of the outer peripheral surface of the arc-shaped plate (15), and the top of the main top column (16) is provided with a top ring (23) capable of extending outward, and a driving ball (18) capable of providing power to the top ring (23) is provided inside the main top column (16).

2. The method for preparing a recycled mixed material according to claim 1, characterized in that: The upper and lower surfaces of the heating inner box (4) are both provided with a plurality of first springs (5) each having one end fixedly connected to the heating outer box (1), and the upper surface of the heating inner box (4) is provided with a vibration motor for driving the vibration thereof.

3. The method for preparing a recycled mixed material according to claim 2, characterized in that: The separation plate (6) is rotatably connected to a first connecting plate (8) at both ends thereof, one end of which is slidably connected to the heating inner box (4); the inner wall of the heating inner box (4) is fixedly connected to a first support plate (10) above and below the rear end of the separation plate (6); and the inner wall of the heating inner box (4) is also fixedly connected to a first support plate (10) below the front end of the separation plate (6); and the first tension spring (12) and the second spring (11) are fixedly connected to the upper and lower surfaces of the first connecting plate (8) rotatably connected to the rear end of the separation plate (6), respectively, wherein the other ends of the first tension spring (12) and the second spring (11) are respectively arranged on the corresponding first support plate (10); and the lower surface of the first connecting plate (8) rotatably connected to the front end of the separation plate (6) is fixedly connected to a second spring (11) at one end thereof which is arranged on the corresponding first support plate (10).

4. The method for preparing a recycled mixed material according to claim 3, characterized in that: The left and right sides of the heating outer box (1) are provided with a plurality of first discharge ports (13), and the left and right sides of the heating inner box (4) are provided with second discharge ports (14) corresponding to the first discharge ports (13), the free end of each receiving plate (7) sequentially passes through the corresponding second discharge port (14) and the first discharge port (13), and the head of the lower surface of the last receiving plate (7) from top to bottom is rotatably connected to the outflow plate (30), and the free end of the outflow plate (30) sequentially passes through the corresponding second discharge port (14) and the first discharge port (13).

5. The method for preparing a recycled mixed material according to claim 4, characterized in that: The upper surface of the separation plate (6) is evenly provided with a plurality of first sliding grooves, and a plurality of main top columns (16) are respectively slidably connected in the corresponding plurality of sliding grooves, and the bottom end of the main top column (16) is fixedly connected to a fourth spring (17) having one end arranged on the lower surface of the first sliding groove.

6. The method for preparing a recycled mixed material according to claim 5, characterized in that: The inner wall of each separation port is slidably connected to four arc-shaped plates (15), and the four arc-shaped plates (15) are sequentially abutted at both ends in the circumferential direction. A plurality of second sliding grooves are evenly opened on the top of the inner wall of the separation port. The top of the outer peripheral surface of the arc-shaped plate (15) is fixedly connected to a second support plate (26) with one end slidably connected to the second sliding groove. The lower surface of the second support plate (26) is fixedly connected to a third spring (27) with one end arranged on the bottom surface of the second sliding groove.

7. The method for preparing a recycled mixed material according to claim 6, characterized in that: A plurality of sliding holes are provided at the bottom of the inner peripheral surface of the separation port, each of the sliding holes can respectively cause the first sliding groove to communicate with the corresponding separation port, and each impact column (29) is respectively slidably connected in the corresponding sliding hole, and the pushing block (28) is a wedge-shaped block inclined upward, and the inclined surface of the pushing block (28) can abut against one end of the impact column (29).

8. The method for preparing a recycled mixed material according to claim 7, characterized in that: The front and rear ends of the lower surface of the top ring (23) are fixedly connected to a second tension spring (25) with one end disposed on the main top column (16).

9. The method for preparing a recycled mixed material according to claim 8, characterized in that: The interior of the main top column (16) is a cavity, and the top end of the cavity of the main top column (16) is rotatably connected to a hollow limiting ball (19), and a driving ball (18) is placed in the cavity. The outer surface of the driving ball (18) is fixedly connected to a driving rod (21) having one end penetrating the limiting ball (19) and capable of contacting the top ring (23).

10. The method for preparing a recycled mixed material according to claim 9, characterized in that: The inner wall of the limiting ball (19) is slidably connected to a third support plate (22), and the driving rod (21) passes through the third support plate (22). The third support plate (22) and the driving rod (21) are fixedly connected. The upper surface of the third support plate (22) is fixedly connected to a fifth spring (20) having one end arranged on the inner wall of the limiting ball (19).

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