A processing apparatus for low temperature recycled asphalt mix

Abstract

The application discloses a kind of processing equipment of low-temperature regenerated asphalt mixture, it is related to the processing technical field of asphalt mixture.This equipment includes cylinder, mounting bracket and drive mechanism, one end of cylinder is closed, and the other end is provided with discharge plate, discharge plate is rotatably sealed with cylinder, and discharge plate is fixedly connected with mounting bracket;Another feeding pipe is provided, one end of feeding pipe is rotatably sealed with the middle part of the closed end of cylinder, and the other end is fixed on mounting bracket;Stirring shaft is provided in the cylinder along the axial direction, one end of stirring shaft extends into feeding pipe, and the other end is rotatably connected with discharge plate;Several connecting rods are connected in the cylinder, and connecting rod is fixedly connected with stirring shaft;Several spiral plates are further provided and fixed on connecting rod;Stirring shaft inside feeding pipe is provided with spiral feeding plate;First feeding port and crushing mechanism are provided on feeding pipe, and discharge port is provided on discharge plate.The application uses a set of drive mechanism to realize feeding, crushing, shaking, mixing, discharging, crushing and dust-settling functions, and the processing efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of asphalt mixture processing technology, and particularly to processing equipment for low-temperature recycled asphalt mixtures. Background Technology

[0002] In existing technologies, asphalt recycling methods are divided into hot recycling, warm recycling, and cold recycling. In hot recycling, the mixture is made by hot mixing old asphalt, new aggregate, recycling agent, and new asphalt. The larger the amount of old aggregate used and the higher the heating temperature, the more significant the thermal aging of the old aggregate, which has a very negative impact on the subsequent pavement. Therefore, the amount of old aggregate used is limited. Cold recycling is a method of recycling asphalt at low temperatures. When reusing waste asphalt, it needs to be crushed into granular form before it can be used and mixed with other raw materials. However, existing processing equipment is prone to asphalt accumulation or uneven distribution of asphalt particles when adding waste asphalt and other materials. This adversely affects subsequent processing of cold-recycled asphalt. Therefore, there is an urgent need to improve and optimize asphalt mixture processing equipment. Summary of the Invention

[0003] This invention provides a processing device for low-temperature recycled asphalt mixtures. The device utilizes the rotation of the mixing cylinder during operation to drive a crushing mechanism to crush the old asphalt raw materials. Simultaneously, it can transport other raw materials into the cylinder. Furthermore, the device allows switching between conveying / mixing and discharging modes by adjusting the direction of the cylinder's rotation. The entire process of crushing, feeding, mixing, and discharging old asphalt raw materials is achieved using only one drive mechanism. No pretreatment of the old asphalt is required, making operation convenient and labor-saving. Specifically, this is achieved through the following technologies.

[0004] A processing device for low-temperature recycled asphalt mixture includes a cylinder, a mounting frame, and a drive mechanism. One end of the cylinder is closed, and the other end is provided with a discharge plate. The discharge plate is rotatably and sealedly connected to the cylinder, and the discharge plate is fixedly connected to the mounting frame. A feed pipe is also provided, with one end rotatably and sealedly connected to the middle of the closed end of the cylinder, and the other end fixed to the mounting frame. An axially arranged stirring shaft is provided inside the cylinder, with one end extending into the feed pipe and the other end rotatably connected to the discharge plate. Several connecting rods are fixedly connected inside the cylinder, and the connecting rods are fixedly connected to the stirring shaft. Several spiral plates are evenly and fixedly distributed on the connecting rods. Spiral feeding plates are provided around the stirring shaft extending into the feed pipe. A first feed inlet and a crushing mechanism are respectively provided on the feed pipe, and a discharge outlet is provided on the discharge plate. The drive mechanism simultaneously drives the cylinder to rotate and the crushing mechanism to operate.

[0005] The processing equipment for low-temperature recycled asphalt mixtures provided by this invention addresses the problems encountered in the preparation of low-temperature recycled asphalt mixtures, such as the easy accumulation of asphalt particles and uneven particle distribution. By designing a special cylinder and mixing structure, and cooperating with the crushing mechanism, it realizes the crushing of old asphalt raw materials, material feeding, mixing and discharging.

[0006] In the processing equipment provided by this invention, since the spiral plate and the stirring shaft are indirectly and fixedly connected to the cylinder through connecting rods, and the feed pipe is rotatably and sealingly connected to the closed end of the cylinder, and the discharge plate is rotatably and sealingly connected to the cylinder, and the feed pipe is fixed on the mounting frame; therefore, when the driving mechanism drives the cylinder to rotate, the stirring shaft, spiral plate, and connecting rod will rotate together, while the feed pipe and the discharge plate of the cylinder will not rotate. As the stirring shaft rotates, the spiral feeding plate located inside the feed pipe also rotates, achieving the purpose of feeding.

[0007] Those skilled in the art will understand that both the drive mechanism and the crushing mechanism are common mechanical equipment structures. The drive mechanism can drive the cylinder to rotate and simultaneously drive the crushing mechanism. Drive methods include, but are not limited to, gear assemblies and belts.

[0008] When the above-mentioned processing equipment provided by the present invention is working, the waste asphalt to be crushed is poured into the crushing mechanism, and other materials are poured into the feed pipe from the first feed inlet; the cylinder, spiral plate, and spiral feeding plate rotate, and the crushing mechanism also begins to crush the waste asphalt; the crushed waste asphalt particles and other materials enter the feed pipe and are initially mixed; as the spiral feeding plate rotates, the waste asphalt particles and other materials are transported into the cylinder for mixing.

[0009] The spiral plate has two working modes: forward rotation and reverse rotation. When the spiral plate rotates forward, it pushes the material near the inside of the cylinder towards the discharge pipe, achieving material mixing during the pushing process. When the spiral plate rotates in reverse, it pushes the material inside the cylinder towards the feed pipe, also achieving material mixing during the pushing process. By continuously alternating between forward and reverse motion, the spiral plate causes the material to move back and forth inside the cylinder, thereby achieving thorough mixing of the material.

[0010] After the materials are mixed and prepared, the spiral plate rotates forward to push the materials to the discharge port of the discharge plate and discharge them. After all the materials are discharged, if there are still residual materials adhering to or attached to the cylinder and the discharge plate, the spiral plate can be rotated in the reverse direction to scrape them off, so that the scraped residual materials are pushed a distance in the direction of the feed pipe, and then the spiral plate is rotated forward to discharge them from the discharge port.

[0011] Furthermore, the closed end of the cylinder is provided with a toothed ring along the circumference, and the drive shaft of the drive mechanism meshes with the toothed ring. Rotation of the drive shaft of the drive mechanism drives the toothed ring to rotate, and the cylinder rotates accordingly.

[0012] Furthermore, the crushing mechanism includes a feed box and two crushing rollers. The crushing rollers are inclined at different heights and matched to each other inside the feed box. One end of the roller shaft of each crushing roller extends from the side wall of the feed box and is connected to a first gear assembly. The first gear assemblies of the two crushing rollers mesh with each other, and the first gear assembly of one crushing roller meshes with the gear ring.

[0013] This invention also provides a specific structural form of the crushing mechanism. The phrase "the crushing rollers are inclined at different heights and matched to each other within the feed box" means that the two crushing rollers are arranged vertically within the feed box, and do not overlap when viewed from above. The surfaces of the two crushing rollers mesh together for crushing waste asphalt. The roller shafts of both crushing rollers are connected to first gear assemblies outside the discharge box. The two first gear assemblies mesh with each other, and the gear ring on the cylinder meshes with one of the first gear assemblies. By meshing the drive shaft, gear ring, and first gear assembly of the drive mechanism together, this processing equipment enables a single drive mechanism to simultaneously drive the stirring shaft and the crushing rollers, thereby realizing the transport of material to the cylinder, the mixing of material within the cylinder, the discharge of material, and the crushing of waste asphalt.

[0014] Furthermore, the crushing mechanism also includes a shaking component, which is located inside the feed box and below the two crushing rollers. The asphalt mixture processing equipment of the present invention further includes a shaking component within the crushing mechanism. This shaking component not only prevents crushed waste asphalt particles from remaining inside the crushing mechanism but also ensures that the crushed waste asphalt particles fall more evenly into the feed pipe through shaking.

[0015] Furthermore, the inside of the feed box is provided with a step, and the shaking assembly includes a shaking plate, several elastic elements, and a second gear assembly; the shaking plate is located on the step, and several elastic elements are provided between the shaking plate and the step; the second gear assembly is located on the side wall of the feed box and meshes with any one of the first gear assemblies; the shaft of the second gear assembly is also fixedly connected to a push rod, and a triangular block is provided on one side of the shaking plate, the triangular block matching the push rod.

[0016] In the specific structure of the material shaking assembly provided by this invention, the material shaking plate is placed on the step of the feed box, and an elastic element and a second gear assembly are connected between the material shaking plate and the step. When the drive mechanism drives the cylinder to rotate, the shaft of the second gear assembly also rotates, so the push rod also moves in a circular motion. When the push rod sweeps over the triangular block, it abuts against the inclined surface of the triangular block and pushes the triangular block down. When the triangular block is pressed down, the material shaking plate also presses down, compressing the elastic element. As the push rod continues to abut against and push the triangular block, the displacement of the triangular block becomes larger and larger until the triangular block and the push rod are no longer in contact. At this time, the material shaking plate rises and shakes up and down under the action of the elastic element. The same process is repeated when the push rod of the material shaking plate sweeps over the triangular block again. The shaking of the material shaking plate can make the material quickly disperse and fall evenly into the feed pipe.

[0017] Furthermore, it also includes a dust suppression mechanism, which includes a limiting post, a limiting frame, and a piston plate; the side wall of the feed box is provided with a sliding cavity and a piston cavity; the limiting post and the limiting frame are located in the sliding cavity, the limiting post is located in the limiting frame, and the limiting frame slides up and down in the sliding cavity; the piston plates are all located in the piston cavity, and the connecting part of the piston plate passes through the piston cavity, extends into the sliding cavity, and is fixedly connected to the limiting frame; any end of the roller shaft of any one of the crushing rollers extends into the sliding cavity and is eccentrically fixedly connected to the limiting post; The top plate of the feeding box is equipped with a one-way air inlet pipe and a one-way air outlet pipe; one end of the one-way air inlet pipe and one end of the one-way air outlet pipe are respectively connected to the piston chamber; the other end of the one-way air inlet pipe is connected from the second feed port of the feeding box to the inside of the feeding box; the other end of the one-way air outlet pipe is connected from the top plate of the feeding box to the inside of the feeding box.

[0018] The asphalt mixture processing equipment provided by this invention also includes a dust suppression mechanism. Specifically, in this mechanism, a piston plate moves up and down within the piston chamber, and a limiting frame moves up and down within the sliding chamber. The phrase "any end of the crushing roller shaft extends into the sliding chamber and is eccentrically fixedly connected to the limiting post via a swing arm" means that the crushing roller shaft is connected to one end of the swing arm, and the limiting post is connected to the other end of the swing arm. When this configuration is used, the crushing roller shaft rotates, driving the swing arm to rotate. As the swing arm rotates, the limiting post at its end moves in a circular motion within the sliding chamber. However, since the limiting frame can only move up and down within the sliding chamber, when the limiting post moves in a circular motion within the sliding chamber, it not only moves back and forth within the limiting frame but also moves up and down along with the limiting frame. When the limiting frame moves up and down, it drives the piston plate to move up and down within the piston chamber, causing the piston chamber to draw in and exhaust air. The airflow in the one-way inlet and one-way outlet pipes can only flow in one direction. When the piston plate moves upward, the gas in the piston chamber is forced into the one-way exhaust pipe and blown into the discharge box from the top plate. When the piston plate moves downward, the air near the second inlet of the discharge box is drawn into the one-way intake pipe and enters the piston chamber. When the piston plate moves upward again, it is blown into the discharge box through the one-way exhaust pipe.

[0019] The dust suppression mechanism utilizes the aforementioned special structure and operation mode to re-inhale the gas dust in the discharge box of the crushing mechanism, as well as the micro-dust attached to the discharge box and the second feed port, into the piston chamber and blow it towards the crushing roller, thus avoiding the overflow of gas dust and saving materials to a greater extent.

[0020] This invention, through the combination of the above-mentioned special structures, realizes that a single drive mechanism can simultaneously drive the cylinder (stirring shaft, spiral plate and spiral feeding plate), crushing mechanism and dust suppression mechanism; that is, it can simultaneously realize the functions of feeding, crushing, shaking, premixing, mixing, discharging, crushing and dust suppression.

[0021] Furthermore, a vent plate is inclinedly positioned at the second feed inlet, and the surface of the vent plate has several through holes; the inlet of the one-way air intake pipe is located below the vent plate; several nozzles are provided inside the top plate of the feed box, and the nozzles face the interior of the feed box and are oriented in the same direction as the inclination of the vent plate; the end of the one-way air outlet pipe branches and connects to each of the nozzles. When the second feed inlet is equipped with a vent plate, and the inlet of the one-way air intake pipe is drawing in gas, suction can be generated at the through holes of the vent plate, which facilitates the intake of a wider range of gas and dust into the one-way air intake pipe.

[0022] Furthermore, a rotating plate is fixedly connected to one end of the stirring shaft near the discharge plate. The rotating plate is not connected to the discharge plate or is rotatably connected. The connecting rods are distributed around the stirring shaft and are parallel to the stirring shaft. One end of the connecting rod is fixedly connected to the closed end of the cylinder, and the other end of the connecting rod is connected to the rotating plate.

[0023] Furthermore, the connecting rods are radially distributed around the stirring shaft along the radial direction of the cylinder, with one end of the connecting rod fixedly connected to the inner wall of the cylinder and the other end of the connecting rod fixedly connected to the stirring shaft.

[0024] Both of the above-mentioned connecting rod configurations can achieve the same function and purpose.

[0025] Furthermore, the inner wall of the cylinder is also provided with an inner liner, and the surface of the inner liner is distributed with a plurality of push blocks, and there is a gap between the top surface of the push blocks and the edge of the spiral plate. The push blocks can assist in promoting the mixing of materials.

[0026] Furthermore, several push blocks are evenly distributed on the inner surface of the inner liner cylinder; or, several push blocks are connected end-to-end along the axial direction of the cylinder to form a push strip. When the push blocks are connected end-to-end, they form a long, strip-shaped push strip. The length direction of the push strip is the axial direction of the cylinder.

[0027] Furthermore, the surface of the pusher bar perpendicular to the inner liner is inclined along the direction from the closed end of the cylinder to the discharge plate. That is, the vertical surface of the pusher bar has a slight angle with the axial direction of the cylinder. When discharge is required, this inclined surface provides additional thrust towards the discharge plate, improving discharge efficiency.

[0028] Furthermore, the stirring shaft extending into the feed pipe is either not connected to or rotatably connected to the end of the feed pipe away from the cylinder.

[0029] Compared with existing technologies, the advantages of this invention are as follows: This invention provides a processing equipment for low-temperature recycled asphalt mixtures. Addressing the needs of crushing waste asphalt used in the raw materials and mixing it with other materials, it features a specially structured cylinder, feeding structure, mixing structure, crushing mechanism, shaking assembly, and dust suppression mechanism. By utilizing the close integration of these structures and employing only one drive mechanism, the operation of the spiral plate can be flexibly adjusted to achieve feeding, crushing, shaking, premixing, mixing, discharging, crushing again, and dust suppression functions, resulting in high crushing and mixing efficiency. Attached Figure Description

[0030] Figure 1 A three-dimensional structural diagram of a processing equipment for low-temperature recycled asphalt mixtures from a first angle; Figure 2 This is a two-dimensional structural diagram of a processing equipment for low-temperature recycled asphalt mixtures from a second angle. Figure 3 A three-dimensional structural diagram of a low-temperature recycled asphalt mixture processing equipment from a third angle; Figure 4 A schematic diagram of the internal structure of the cylinder and crushing mechanism of the processing equipment for low-temperature recycled asphalt mixture; Figure 5 for Figure 4 A schematic diagram of the partial structure (crushing mechanism and material shaking assembly) at point A in the middle; Figure 6 A schematic diagram of a partial structure (dust suppression mechanism) of a processing equipment for low-temperature recycled asphalt mixture; In the diagram: 1. Cylinder; 2. Mounting frame; 3. Drive mechanism; 4. Discharge plate; 5. Feed pipe; 6. Stirring shaft; 7. Connecting rod; 8. Spiral plate; 9. Spiral feeding plate; 10. First feed inlet; 11. Discharge outlet; 12. Gear ring; 13. Feed box; 14. Crushing roller; 15. First gear assembly; 16. Step; 17. Shaking plate; 18. Elastic element; 19. Second gear assembly; 20. Push rod; 21. Triangular block; 22. Limiting post; 23. Limiting frame; 24. Piston plate; 25. Sliding cavity; 26. Piston cavity; 27. One-way air inlet pipe; 28. One-way air outlet pipe; 29. ​​Second feed inlet; 30. Ventilation plate; 31. Nozzle; 32. Rotating plate; 33. Inner liner; 34. Push block; 35. Push bar. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The technical solutions of various embodiments of this patent will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0033] In the description of this patent, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this patent and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0035] It should be noted that a "fixed connection" between two structures means that the two objects can move synchronously under the drive of an external force, without relative movement between them. A "rotational / sealable connection" between two structures means that one structure can rotate relative to the other structure, and the two structures also have good sealing performance.

[0036] All accompanying drawings provided in this invention are exemplary representations. Those skilled in the art will understand the specific meanings of the terms used in this patent based on the specific circumstances. The patent will now be described in further detail through specific embodiments and in conjunction with the accompanying drawings.

[0037] like Figure 1-4As shown in the figure, the processing equipment for low-temperature recycled asphalt mixture provided in this specific embodiment includes a cylinder 1, a mounting frame 2, and a drive mechanism 3. One end of the cylinder 1 is a closed end, and the other end is provided with a discharge plate 4. The discharge plate 4 is rotatably and sealedly connected to the cylinder 1, and the discharge plate 4 is fixedly connected to the mounting frame 2. A feed pipe 5 is also provided, one end of which is rotatably and sealedly connected to the middle of the closed end of the cylinder 1, and the other end of which is fixed to the mounting frame 2. An axially arranged stirring shaft 6 is provided inside the cylinder 1, and one end of the stirring shaft 6... Extending into the interior of the feed pipe 5, the other end of the stirring shaft 6 is rotatably connected to the discharge plate 4; several connecting rods 7 are fixedly connected inside the cylinder 1, and the connecting rods 7 are fixedly connected to the stirring shaft 6; several spiral plates 8 are also uniformly fixedly distributed on several of the connecting rods 7; a spiral feeding plate 9 is provided around the stirring shaft 6 extending into the interior of the feed pipe 5; a first feed inlet 10 and a crushing mechanism are respectively provided on the feed pipe 5, and a discharge outlet 11 is provided on the discharge plate 4; the driving mechanism 3 simultaneously drives the cylinder 1 to rotate and the crushing mechanism to work.

[0038] The aforementioned low-temperature recycled asphalt mixture processing equipment, through its specially designed cylinder and mixing structure, works in conjunction with a crushing mechanism to achieve the crushing, feeding, mixing, and discharging of old asphalt raw materials. In this processing equipment, the spiral plate and mixing shaft are indirectly and fixedly connected to the cylinder via connecting rods. The feed pipe is rotatably and sealingly connected to the closed end of the cylinder, and the discharge plate is rotatably and sealingly connected to the cylinder. The feed pipe is fixed to a mounting frame. Therefore, when the drive mechanism drives the cylinder to rotate, the mixing shaft, spiral plate, and connecting rod will rotate together, while the feed pipe and the discharge plate of the cylinder will not rotate. As the mixing shaft rotates, the spiral feeding plate located inside the feed pipe also rotates, achieving the purpose of feeding.

[0039] Those skilled in the art will know that the raw materials for low-temperature recycled asphalt mixtures are conventional technologies in this field. Common raw materials include, but are not limited to, waste asphalt, coarse aggregates (such as crushed stone, construction waste, etc.), emulsified asphalt, and other necessary admixtures and water.

[0040] Those skilled in the art will understand that both the drive mechanism and the crushing mechanism are common mechanical equipment structures. The drive mechanism can drive the cylinder to rotate and simultaneously drive the crushing mechanism. Drive methods include, but are not limited to, gear assemblies and belts.

[0041] The working process of the processing equipment provided by the present invention is as follows: (1) Pour the waste asphalt that needs to be crushed into the crushing mechanism, and pour other materials that need to be mixed into the feed pipe from the first feed inlet; (2) Start the drive mechanism to make the cylinder, spiral plate and spiral feed plate rotate, and the crushing mechanism also begins to crush the waste asphalt; the crushed waste asphalt particles and other materials enter the feed pipe and are initially mixed. (3) As the spiral feeder rotates, waste asphalt particles and other materials are transported into the cylinder for mixing.

[0042] When the spiral plate rotates in the forward direction, it pushes the material near the inside of the cylinder towards the discharge pipe, achieving material mixing during the pushing process. When the spiral plate rotates in the reverse direction, it pushes the material inside the cylinder towards the feed pipe, also achieving material mixing during the pushing process. By continuously alternating between forward and reverse movements, the spiral plate causes the material to move back and forth inside the cylinder, thereby achieving thorough mixing of the material.

[0043] After the materials are mixed and prepared, the spiral plate rotates forward to push the materials to the discharge port of the discharge plate and discharge them. After all the materials are discharged, if there are still residual materials adhering to or attached to the cylinder and the discharge plate, the spiral plate can be rotated in the reverse direction to scrape them off, so that the scraped residual materials are pushed a distance in the direction of the feed pipe, and then the spiral plate is rotated forward to discharge them from the discharge port.

[0044] In some specific embodiments of the present invention, such as Figure 1-4 As shown, the closed end of the cylinder 1 is provided with a toothed ring 12 along the circumference, and the drive shaft of the drive mechanism 3 meshes with the toothed ring 12. When the drive shaft of the drive mechanism rotates, it drives the toothed ring to rotate, and the cylinder can rotate along with it.

[0045] In some specific embodiments of the present invention, such as Figure 5 As shown, the crushing mechanism includes a feed box 13 and two crushing rollers 14. The crushing rollers 14 are inclined at different heights and matched to each other inside the feed box 13. One end of the roller shaft of the crushing roller 14 extends from the side wall of the feed box 13 and is connected to a first gear assembly 15. The first gear assemblies 15 of the two crushing rollers 14 mesh with each other, and the first gear assembly 15 of one crushing roller 14 meshes with the gear ring 12.

[0046] like Figure 5 As shown, "the crushing rollers are inclined at different heights and matched to each other inside the feed box" means that the two crushing rollers are arranged vertically inside the feed box, and they do not overlap when viewed from above. The surfaces of the two crushing rollers mesh together to crush waste asphalt. The rollers of both crushing rollers are connected to a first gear assembly outside the discharge box. The two first gear assemblies mesh with each other, and the gear ring on the cylinder meshes with one of the first gear assemblies.

[0047] By meshing the drive shaft, gear ring, and first gear assembly of the drive mechanism together, this processing equipment enables a single drive mechanism to simultaneously drive the stirring shaft and the crushing roller to rotate, thereby realizing the transportation of materials into the cylinder, the mixing of materials within the cylinder, the discharge of materials, and the crushing of waste asphalt.

[0048] In some specific embodiments of the present invention, such as Figure 5 As shown, the crushing mechanism also includes a material shaking component, which is located inside the feed box 13 and below the two crushing rollers 14.

[0049] Specifically, the feed box 13 has a step 16 inside, and the shaking assembly includes a shaking plate 17, a plurality of elastic elements 18, and a second gear assembly 19; the shaking plate 17 is located on the step 16, and a plurality of elastic elements 18 are provided between the shaking plate 17 and the step 16; the second gear assembly 19 is located on the side wall of the feed box 13 and meshes with any one of the first gear assemblies 15; the shaft of the second gear assembly 19 is also fixedly connected to a push rod 20, and a triangular block 21 is provided on one side of the shaking plate 17, the triangular block 21 matching the push rod 20.

[0050] The asphalt mixture processing equipment of the present invention further includes a material shaking component within the crushing mechanism. The material shaking plate is placed on the step of the feed box, and an elastic element and a second gear assembly are connected between the material shaking plate and the step. In the specific structure of the material shaking component provided by the present invention, the material shaking plate is placed on the step of the feed box, and an elastic element and a second gear assembly are connected between the material shaking plate and the step. When the drive mechanism drives the cylinder to rotate, the shaft of the second gear assembly also rotates, so the push rod also moves in a circular motion. When the push rod sweeps over the triangular block, it abuts against the inclined surface of the triangular block and pushes the triangular block down. When the triangular block presses down, the material shaking plate also presses down, compressing the elastic element. As the push rod continues to abut against and push the triangular block, the displacement of the triangular block increases until the triangular block disengages from the push rod again. At this time, the material shaking plate rises and shakes up and down under the action of the elastic element. The same process is repeated when the push rod of the material shaking plate sweeps over the triangular block again.

[0051] The material shaking component uses the shaking of the shaking plate to not only prevent the crushed waste asphalt particles from getting stuck inside the crushing mechanism, but also to quickly disperse the material and make it fall more evenly into the feed pipe.

[0052] In some specific embodiments of the present invention, such as Figure 6As shown, it also includes a dust suppression mechanism, which includes a limiting post 22, a limiting frame 23, and a piston plate 24; the side wall of the feed box 13 is provided with a sliding cavity 25 and a piston cavity 26; the limiting post 22 and the limiting frame 23 are located in the sliding cavity 25, the limiting post 22 is located in the limiting frame 23, and the limiting frame 23 slides up and down in the sliding cavity 25; the piston plates 24 are all located in the piston cavity 26, and the connecting part of the piston plate 24 passes through the piston cavity 26 and extends into the sliding cavity 25 and is fixedly connected to the limiting frame 23; any end of the roller shaft of any one of the crushing rollers 14 extends into the sliding cavity 25 and is eccentrically fixedly connected to the limiting post 22; The top plate of the feed box 13 is provided with a one-way air inlet pipe 27 and a one-way air outlet pipe 28; one end of the one-way air inlet pipe 27 and one end of the one-way air outlet pipe 28 are respectively connected to the piston chamber 26; the other end of the one-way air inlet pipe 27 is connected from the second feed port 29 of the feed box 13 to the interior of the feed box 13; the other end of the one-way air outlet pipe 28 is connected from the top plate of the feed box 13 to the interior of the feed box 13.

[0053] The asphalt mixture processing equipment provided by this invention also includes a dust suppression mechanism. In its specific structure, a piston plate moves up and down within a piston cavity, and the limiting frame moves up and down within a sliding cavity. For example... Figure 6 As shown, "any end of the crushing roller shaft extends into the sliding cavity and is eccentrically fixedly connected to the limiting post through the swing arm" means that the crushing roller shaft is connected to one end of the swing arm, and the limiting post is connected to the other end of the swing arm.

[0054] In this configuration, the rotation of the crushing roller shaft drives the swing arm to rotate, and the limiting post at the end of the swing arm rotates in a circular motion within the sliding cavity. However, since the limiting frame can only move up and down within the sliding cavity, the limiting post, while rotating in a circular motion within the sliding cavity, also moves back and forth within the limiting frame, and simultaneously moves the limiting frame up and down with it. When the limiting frame moves up and down, it drives the piston plate to move up and down within the piston cavity, causing the piston cavity to draw in and exhaust air. The airflow in the one-way inlet and one-way outlet pipes can only flow in one direction. When the piston plate moves upward, the gas in the piston cavity is forced into the one-way outlet pipe and blown into the discharge box from the top plate. When the piston plate moves downward, air near the second inlet of the discharge box is drawn into the one-way inlet pipe and enters the piston cavity, only to be blown into the discharge box through the one-way outlet pipe the next time the piston plate moves upward.

[0055] The dust suppression mechanism utilizes the aforementioned special structure and operation mode to re-inhale the gas dust in the discharge box of the crushing mechanism, as well as the micro-dust attached to the discharge box and the second feed port, into the piston chamber and blow it towards the crushing roller, thus avoiding the overflow of gas dust and saving materials to a greater extent.

[0056] This invention, through the combination of the above-mentioned special structures, realizes that a single drive mechanism can simultaneously drive the cylinder (stirring shaft, spiral plate and spiral feeding plate), crushing mechanism and dust suppression mechanism; that is, it can simultaneously realize the functions of feeding, crushing, shaking, premixing, mixing, discharging, crushing and dust suppression.

[0057] In some specific embodiments of the present invention, such as Figure 6 As shown, a vent plate 30 is inclinedly provided at the position of the second feed inlet 29, and the surface of the vent plate 30 is provided with several through holes; the inlet of the one-way air inlet pipe 27 is located below the vent plate 30; several nozzles 31 are provided inside the top plate of the feed box 13, and the nozzles 31 face the inside of the feed box 13 and face the same direction of inclination as the vent plate 30; the end of the one-way air outlet pipe 28 branches and is connected to each of the nozzles 31.

[0058] When the second feed inlet is equipped with a vent plate, and the inlet of the one-way air intake pipe is drawing in gas, suction can be generated at the through hole of the vent plate, which can facilitate the intake of a wider range of gas and dust into the one-way air intake pipe.

[0059] In some specific embodiments of the present invention, such as Figure 2-4 As shown, a rotating plate 32 is fixedly connected to one end of the stirring shaft 6 near the discharge plate 4, and the rotating plate 32 is rotatably connected to the discharge plate 4.

[0060] In some specific embodiments of the present invention, such as Figure 4 As shown, the connecting rods 7 are distributed around the stirring shaft 6 and are parallel to the stirring shaft 6. One end of the connecting rod 7 is fixedly connected to the closed end of the cylinder 1, and the other end of the connecting rod 7 is connected to the rotating plate 32.

[0061] In other specific embodiments of the present invention, the connecting rods are radially distributed around the stirring shaft along the radial direction of the cylinder, one end of the connecting rods is fixedly connected to the inner wall of the cylinder, and the other end of the connecting rods is fixedly connected to the stirring shaft.

[0062] Both of the above-mentioned connecting rod configurations can achieve the same function and purpose.

[0063] In some specific embodiments of the present invention, such as Figure 1-4As shown, the inner wall of the cylinder 1 is also provided with an inner liner 33, and a plurality of push blocks 34 are distributed on the surface of the inner liner 33. There is a gap between the top surface of the push block 34 and the edge of the spiral plate 8. The push blocks can help promote the mixing of materials.

[0064] like Figure 3 , 4 As shown, in some other specific embodiments of the present invention, a plurality of push blocks 34 are connected end-to-end along the axial direction of the cylinder 1 to form a push strip 35. When the push blocks are connected end-to-end, a long strip-shaped push strip is formed. The length direction of the push strip is the axial direction of the cylinder.

[0065] In other specific embodiments of the present invention, the surface of the pusher bar perpendicular to the inner liner is inclined along the direction from the closed end of the cylinder to the discharge plate. That is, there is a slight angle between the vertical surface of the pusher bar and the axial direction of the cylinder. When discharge is required, this inclined surface can provide additional thrust to the material towards the discharge plate, thereby improving discharge efficiency.

[0066] Furthermore, the stirring shaft extending into the feed pipe is either not connected to or rotatably connected to the end of the feed pipe away from the cylinder.

[0067] The low-temperature recycled asphalt mixture processing equipment provided in this specific embodiment utilizes the above-mentioned structures in close connection and cooperation, and only uses one drive mechanism to flexibly adjust the operation mode of the spiral plate, so as to realize the functions of feeding, crushing, shaking, premixing, mixing, discharging, crushing and dust suppression, with high crushing and mixing efficiency.

[0068] The above detailed embodiments describe the implementation of the present invention; however, the present invention is not limited to the specific details described in the above embodiments. Within the scope of the claims and technical concept of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

Claims

1. A processing device for low-temperature recycled asphalt mixture, comprising a cylinder, a mounting frame, and a drive mechanism, wherein one end of the cylinder is a closed end, and the other end is provided with a discharge plate, characterized in that, The discharge plate is rotatably and sealed to the cylinder, and the discharge plate is fixedly connected to the mounting frame; a feed pipe is also provided, one end of which is rotatably and sealed to the middle of the closed end of the cylinder, and the other end of which is fixed to the mounting frame; an axial stirring shaft is provided inside the cylinder, one end of which extends into the inside of the feed pipe, and the other end of which is rotatably connected to the discharge plate; several connecting rods are fixedly connected inside the cylinder, and the connecting rods are fixedly connected to the stirring shaft; several spiral plates are also provided and evenly fixedly distributed on several of the connecting rods; a spiral feeding plate is provided around the stirring shaft extending into the inside of the feed pipe; a first feed inlet and a crushing mechanism are respectively provided on the feed pipe, and a discharge outlet is provided on the discharge plate; the driving mechanism simultaneously drives the cylinder to rotate and the crushing mechanism to work.

2. The processing equipment for low-temperature recycled asphalt mixture according to claim 1, characterized in that, The closed end of the cylinder is provided with a toothed ring along the circumference, and the drive shaft of the drive mechanism meshes with the toothed ring.

3. The processing equipment for low-temperature recycled asphalt mixture according to claim 2, characterized in that, The crushing mechanism includes a feed box and two crushing rollers. The crushing rollers are inclined at different heights and matched to each other inside the feed box. One end of the roller shaft of each crushing roller extends from the side wall of the feed box and is connected to a first gear assembly. The first gear assemblies of the two crushing rollers mesh with each other, and the first gear assembly of one crushing roller meshes with the gear ring.

4. The processing equipment for low-temperature recycled asphalt mixture according to claim 3, characterized in that, The crushing mechanism further includes a shaking assembly located inside the feed box and below the two crushing rollers. The feed box has an internal step. The shaking assembly includes a shaking plate, several elastic elements, and a second gear assembly. The shaking plate is located on the step, and several elastic elements are provided between the shaking plate and the step. The second gear assembly is located on the side wall of the feed box and meshes with any one of the first gear assemblies. A push rod is fixedly connected to the shaft of the second gear assembly. A triangular block is provided on one side of the shaking plate, and the triangular block matches the push rod.

5. The processing equipment for low-temperature recycled asphalt mixture according to claim 3 or 4, characterized in that, It also includes a dust suppression mechanism, which includes a limiting post, a limiting frame, and a piston plate; the side wall of the feed box is provided with a sliding cavity and a piston cavity; the limiting post and the limiting frame are located in the sliding cavity, the limiting post is located in the limiting frame, and the limiting frame slides up and down in the sliding cavity; the piston plates are all located in the piston cavity, and the connecting part of the piston plate passes through the piston cavity, extends into the sliding cavity, and is fixedly connected to the limiting frame; any end of the roller shaft of any one of the crushing rollers extends into the sliding cavity and is eccentrically fixedly connected to the limiting post through a swing arm; The top plate of the feeding box is equipped with a one-way air inlet pipe and a one-way air outlet pipe; one end of the one-way air inlet pipe and one end of the one-way air outlet pipe are respectively connected to the piston chamber; the other end of the one-way air inlet pipe is connected from the second feed port of the feeding box to the inside of the feeding box; the other end of the one-way air outlet pipe is connected from the top plate of the feeding box to the inside of the feeding box.

6. The processing equipment for low-temperature recycled asphalt mixture according to claim 5, characterized in that, A vent plate is inclined at the position of the second feed inlet, and the surface of the vent plate has several through holes; the inlet of the one-way air inlet pipe is located below the vent plate; the top plate of the feed box is provided with several nozzles, which face the inside of the feed box and are oriented in the same direction as the inclination of the vent plate; the end of the one-way air outlet pipe branches and is connected to each of the nozzles.

7. The processing equipment for low-temperature recycled asphalt mixture according to any one of claims 1-4 and 6, characterized in that, A rotating plate is fixedly connected to one end of the stirring shaft near the discharge plate. The rotating plate is either not connected to the discharge plate or is rotatably connected to it. The connecting rods are distributed around the stirring shaft and are parallel to it. One end of the connecting rod is fixedly connected to the closed end of the cylinder, and the other end of the connecting rod is connected to the rotating plate.

8. The processing equipment for low-temperature recycled asphalt mixture according to any one of claims 1-4 and 6, characterized in that, The connecting rods are radially distributed around the stirring shaft along the radial direction of the cylinder. One end of the connecting rod is fixedly connected to the inner wall of the cylinder, and the other end of the connecting rod is fixedly connected to the stirring shaft.

9. The processing equipment for low-temperature recycled asphalt mixture according to any one of claims 1-4 and 6, characterized in that, The inner wall of the cylinder is also provided with an inner liner, and a number of push blocks are distributed on the inner surface of the inner liner. There is a gap between the top surface of the push block and the edge of the spiral plate. A number of push blocks are evenly distributed on the inner surface of the inner liner cylinder; or, a number of push blocks are connected end to end along the axial direction of the cylinder to form a push bar.

10. The processing equipment for low-temperature recycled asphalt mixture according to claim 9, characterized in that, The surface of the pusher bar that is perpendicular to the inner liner is inclined along the direction from the closed end of the cylinder to the discharge plate.

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