Environment-friendly warm-mixed modified asphalt production device and method

Abstract

The invention provides an environment-friendly warm-mixing modified asphalt production device and method, and relates to the technical field of asphalt production.The environment-friendly warm-mixing modified asphalt production device comprises a mixing box, and an aggregate supply box, a filler supply box, an asphalt supply tank, a warm-mixing agent supply tank and a modified material supply barrel are arranged at the top of the mixing box; a feeding mechanism used for conveying asphalt, a warm mixing agent and a modified material to the position between the two stirring shafts is arranged in the mixing box, and the feeding mechanism comprises a feeding barrel and two feeding pipes spirally distributed on the outer wall of the feeding barrel; discharge ports are distributed in the side wall of the feeding barrel along the length direction of the feeding barrel, one feeding pipe is communicated with a discharge pipe of an asphalt supply tank, the other feeding pipe is communicated with a discharge pipe of a warm mixing agent supply tank, the spiral directions and the screw pitches of the two feeding pipes are the same, and the initial positions of the two feeding pipes are spaced by 180 degrees on the circumference. According to the invention, the uniformity of various materials in the adding process can be ensured, the required stirring time is shortened on the premise of ensuring the quality of the asphalt mixture, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of asphalt production technology, and more specifically, to an environmentally friendly warm-mix modified asphalt production apparatus and method. Background Technology

[0002] Asphalt pavement is a widely used high-grade pavement in road construction. It uses asphalt raw materials to bond aggregates and fillers, offering superior resistance to traffic and natural factors, resulting in a smooth, dust-free, permeable, and durable surface. Warm-mix asphalt technology primarily uses warm-mix agents to reduce the viscosity of asphalt at low temperatures, allowing it to fully coat the aggregates and maintain the mix's workability even at lower temperatures. While maintaining road performance, it significantly reduces energy consumption and environmental pollution, making it more environmentally friendly than hot-mix asphalt. Modified asphalt is an asphalt material whose properties are improved by adding modifiers such as rubber, resin, and mineral fillers to the base asphalt. Its core purpose is to enhance asphalt's performance in areas such as high-temperature rutting resistance, low-temperature cracking resistance, fatigue resistance, and elasticity and toughness, to meet the stringent requirements of modern transportation and construction for material performance.

[0003] Environmentally friendly warm-mix modified asphalt requires the addition of various materials such as asphalt, warm-mix agent, and modifiers to the aggregate and filler mixture during the production process. During the addition process, the aggregate and filler are constantly being stirred. However, the above materials need to be added to the aggregate and filler mixture in batches and evenly. Existing technology makes it difficult to ensure the uniformity of multiple materials during the addition process at the same time, and it is necessary to extend the stirring time to obtain a relatively uniform asphalt mixture. Furthermore, if the asphalt and modifiers come into contact and mix first, it will cause local lumps of modifiers in the produced warm-mix modified asphalt, affecting the quality of the asphalt mixture. Summary of the Invention

[0004] The purpose of this invention is to provide an environmentally friendly warm-mix modified asphalt production device and method, which can ensure the uniformity of the addition process of various materials, reduce the required mixing time and improve production efficiency while ensuring the quality of asphalt mixture.

[0005] This invention is achieved through the following technical solution: an environmentally friendly warm-mix modified asphalt production device, including a mixing tank, two mixing shafts are arranged inside the mixing tank, and an aggregate supply tank, a filler supply tank, an asphalt supply tank, a warm-mix agent supply tank and a modified material supply cylinder are arranged on the top of the mixing tank. A feeding mechanism for conveying asphalt, warm-mix agent and modified material to the space between the two mixing shafts is arranged inside the mixing tank and above the mixing shafts. The feeding mechanism includes a feeding cylinder and two feeding pipes spirally distributed on the outer wall of the feeding cylinder. The feeding cylinder is inclinedly arranged inside the mixing box and rotatably connected to the end wall of the mixing box. A rotating component for driving the feeding cylinder to rotate is provided on the outer side of the mixing box. A guide pipe connected to the highest point of the feeding cylinder is provided on the mixing box. The discharge end of the modified material feeding cylinder is connected to the guide pipe. Multiple discharge ports are distributed along the length of the feeding cylinder on its side wall. One of the feeding pipes is connected to the discharge pipe of the asphalt supply tank, and the other feeding pipe is connected to the discharge pipe of the warm mix agent supply tank. The spiral direction and pitch of the two feeding pipes are the same, and the starting positions of the two feeding pipes are 180° apart on the circumference. Multiple sets of spray elements are distributed along the axial direction of the feeding cylinder on both feeding pipes. The spray elements on the two feeding pipes are located on opposite sides of the cross-section of the feeding cylinder, and each set of spray elements includes at least two nozzles.

[0006] Furthermore, an arc-shaped baffle is provided inside the feeding cylinder. The length direction of the arc-shaped baffle is consistent with the axial direction of the feeding cylinder. One end of the arc-shaped baffle is fixedly connected to the mixing box through a connecting seat, and the other end is rotatably connected to the end wall of the feeding cylinder through a rotating disk. When the feeding cylinder rotates to the point where the discharge port is located below the arc-shaped baffle, the modified material can be discharged.

[0007] Furthermore, a support base is provided inside the mixing box and above the feeding cylinder along the length of the feeding cylinder. The support base is provided with a blocking component for blocking the spray component and an auxiliary discharge component for discharging the modified material from the discharge port.

[0008] Furthermore, the sealing member includes a fixed plate and a telescopic baffle. The fixed plate is fixedly mounted on the support base, and the telescopic baffle is located directly below the fixed plate and connected to the fixed plate via an arc-shaped spring.

[0009] Furthermore, the auxiliary discharge component includes an auxiliary rod, multiple auxiliary rings, and multiple discharge blocks. The auxiliary rod is disposed on the upper part of the support base, and a lifting electric cylinder is disposed between the auxiliary rod and the support base. The multiple auxiliary rings are fixedly connected to the bottom of the auxiliary rod and correspond one-to-one with multiple discharge ports. The multiple discharge blocks are disposed one-to-one within the multiple auxiliary rings, and the cross-sectional shape of the discharge blocks is conical.

[0010] Furthermore, along the axial direction of the feeding cylinder, each of the discharge ports is located between two adjacent sets of spray components on the same feeding pipe; along the circumferential direction of the feeding cylinder, the discharge port is located between the spray assemblies of two feeding pipes.

[0011] Furthermore, the asphalt supply tank and the warm mix agent supply tank are located at the two outer ends of the mixing tank, and the discharge pipes of the asphalt supply tank and the warm mix agent supply tank are connected to the feeding pipe through flexible corrugated pipes.

[0012] Furthermore, the rotating component includes a drive electric cylinder, a drive rack, and a driven gear. The driven gear is coaxially connected to the feeding cylinder. The drive rack is disposed on one side of the driven gear and meshes with the driven gear. The cylinder barrel of the drive electric cylinder is fixedly disposed at one end of the drive rack, and the piston rod of the drive electric cylinder is fixedly connected to the drive rack.

[0013] Furthermore, bearings are embedded in both ends of the mixing box and the feeding cylinder, and a guide bar is provided on the outside of the mixing box along the length of the drive rack, and a guide groove adapted to the guide bar is provided on the drive rack.

[0014] This invention also discloses a production method using the above-mentioned environmentally friendly warm-mix modified asphalt production device, comprising the following steps: S1. A certain amount of aggregate is conveyed from the aggregate supply box to the mixing box, and a certain amount of filler is conveyed from the filler supply box into the mixing box. The motor of the stirring shaft is started to drive the stirring shaft to rotate, and the aggregate and filler are mixed. S2. Asphalt is delivered to one of the feeding pipes through the asphalt supply tank, warm mix agent is delivered to the other feeding pipe through the warm mix agent supply tank, and modified material is delivered to the feeding cylinder through the modified material supply cylinder; when the spray nozzle on the outlet or feeding pipe is facing downwards, the corresponding material can be delivered between the two mixing shafts. S3. After a specified interval, the feeding cylinder is rotated by a rotating component to switch the discharge position, so that the discharge port of the feeding cylinder alternates with the two feeding pipes to add warm mix agent, asphalt and modified material to the mixing box in batches and intermittently to improve the uniformity of the mixing process. S4. After adding the measured amounts of warm mix additive, asphalt, and modifier, stop the feeding process. The mixing shaft continues to rotate in the mixing tank to mix the various materials evenly, thus completing the production process of environmentally friendly warm mix modified asphalt.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. This invention, by setting up a feeding cylinder and spirally distributing two feeding pipes on the feeding cylinder, allows different materials to be transported to the mixing tank through different pathways. During transportation, the materials can enter evenly from multiple positions, thereby ensuring the uniformity of asphalt, warm mix additive, and modifiers when they enter the mixing tank, reducing the time required for the mixing process and improving production efficiency. At the same time, it can also prevent asphalt, warm mix additive, and modifiers from mixing prematurely and causing agglomeration, thus avoiding local agglomeration that affects the quality of the asphalt mixture.

[0016] 2. This invention rationally arranges the positions of two feeding pipes and opens a discharge port at a designated position on the feeding cylinder. When the spray nozzle of one feeding pipe faces downward, the spray nozzle of the other feeding pipe faces upward. At this time, the discharge port is located at the midpoint between the two sets of spray nozzles in the cross-sectional direction of the feeding pipe, which facilitates the sequential addition of asphalt, warm mix additive, and modifier. At the same time, since the falling position of the modifier is different from that of the asphalt and warm mix additive, it is less likely to clump under the action of asphalt and warm mix additive, thus affecting the quality of the asphalt mixture.

[0017] 3. By setting a support base and configuring a sealing component and an auxiliary discharge component on the support base, when the feeding cylinder rotates to the point where the spray component of one of the feeding pipes faces upward, the sealing component can block the spray component, thereby preventing dust generated during the mixing process from entering the spray component and causing blockage to a certain extent; the auxiliary discharge component can conveniently discharge the accumulated modified material, thereby preventing accumulation at the discharge port. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the mixing tank, asphalt supply tank, warm mix agent supply tank, modified material supply cylinder and feeding mechanism of the present invention; Figure 3 This is a schematic diagram of the feeding mechanism, sealing component, and auxiliary discharge component of the present invention within the mixing tank; Figure 4 This is a schematic diagram of the structure of the feeding tube and the arc-shaped baffle on the feeding cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the two feeding tubes of the present invention; Figure 6 This is a schematic diagram of the structure of the sealing component and auxiliary discharge component of the present invention on the feeding cylinder; Figure 7 This is a schematic diagram of the arc-shaped baffle of the present invention inside the feeding cylinder; Figure 8 This is a schematic diagram of the structure of the sealing component and auxiliary material discharge component of the present invention on the support base; Reference numerals: 1-Mixing box, 11-Agitator shaft, 12-Guide pipe, 13-Bearing, 14-Guide strip, 2-Aggregate supply box, 3-Filler supply box, 4-Asphalt supply tank, 41-Flexible corrugated pipe, 5-Warm mix agent supply tank, 6-Modified material supply cylinder, 7-Feeding mechanism, 71-Feeding cylinder, 711-Discharge port, 72-Feeding pipe, 73-Rotating component, 731-Drive electric cylinder, 732-Drive rack, 733-Driven gear, 74-Spraying component, 741-Spray head, 75-Arc-shaped baffle, 751-Connecting seat, 752-Rotating disc, 8-Support seat, 81-Blocking component, 811-Fixing plate, 812-Telescopic baffle, 813-Arc-shaped spring, 82-Auxiliary discharge component, 821-Auxiliary rod, 822-Auxiliary ring, 823-Discharge block, 824-Lifting electric cylinder. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] Example The following is for reference Figures 1-8 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides an environmentally friendly warm-mix modified asphalt production device. Figure 1 , Figure 2 As shown, the system includes a mixing tank 1, which contains two stirring shafts 11. The top of the mixing tank 1 is equipped with an aggregate supply tank 2, a filler supply tank 3, an asphalt supply tank 4, a warm mix additive supply tank 5, and a modifier supply cylinder 6. The aggregate supply tank 2 includes a screening chamber and a weighing chamber. The screening chamber screens the aggregates and stores aggregates of different particle sizes in multiple chambers. The weighing chamber then quantitatively proportions the aggregates of various particle sizes and adds the proportioned aggregates to the mixing tank 1. The filler supply tank 3 adds filler to the mixing tank 1 to mix with the aggregates. During the mixing process, the asphalt supply tank 4, the warm mix additive supply tank 5, and the modifier supply cylinder 6 add asphalt, warm mix additive, and modifier to the mixing tank 1 in batches to obtain the final asphalt mixture.

[0022] Reference Figure 3 , Figure 4 As shown, a feeding mechanism 7 for conveying asphalt, warm mix additive, and modifier to the space between the two mixing shafts 11 is provided inside the mixing tank 1 and above the mixing shaft 11. The feeding mechanism 7 includes a feeding cylinder 71 and two feeding pipes 72 spirally distributed on the outer wall of the feeding cylinder 71. The feeding cylinder 71 is inclinedly arranged inside the mixing tank 1 and rotatably connected to the end wall of the mixing tank 1. A rotating component 73 for driving the feeding cylinder 71 to rotate is provided on the outer side of the mixing tank 1. A guide pipe 12 connected to the highest point of the feeding cylinder 71 is provided on the mixing tank 1. The discharge end of the modifier supply cylinder 6 is connected to the guide pipe 12. Multiple discharge ports 711 are distributed along the length of the side wall of the feeding cylinder 71. One of the feeding pipes 72 is connected to the discharge pipe of the asphalt supply tank 4, and the other feeding pipe 72 is connected to the discharge pipe of the warm mix additive supply tank 5. The modified material is a solid material, and the modified material supply cylinder 6 is a screw conveyor that can transport the modified material from a low position to a high position into the feeding cylinder 71. The asphalt and warm mix additive are both liquid materials, stored in tanks and pumped to two feeding pipes 72. In the initial state, one of the feeding pipes 72 adds asphalt to the mixing tank 1. Then, the rotating component 73 drives the feeding cylinder 71 to rotate a specified angle, so that the other feeding pipe 72 adds the warm mix additive to the mixing tank 1. Then, the rotating component 73 drives the feeding cylinder 71 to rotate a specified angle, so that the outlet 711 of the feeding cylinder 71 transports the modified material to the mixing tank 1. Finally, the modified material, asphalt, and warm mix additive are transported through different carriers and enter the mixing tank 1.

[0023] Reference Figure 2 , Figure 5 As shown, the asphalt supply tank 4 and the warm mix additive supply tank 5 are located at opposite ends of the mixing tank 1. The discharge pipes of both the asphalt supply tank 4 and the warm mix additive supply tank 5 are connected to the feeding pipe 72 via flexible corrugated pipes 41. The discharge pipe of the asphalt supply tank delivers asphalt from one end of one of the feeding pipes 72 into the feeding pipe 72, while the warm mix additive supply tank delivers warm mix additive from the other end of the other feeding pipe 72 into the feeding pipe 72. The flexible corrugated pipes 41 are designed to accommodate the rotation of the feeding cylinder 71, and by delivering the warm mix additive and asphalt to the two feeding pipes 72 from different directions, the two flexible corrugated pipes 41 are prevented from tangling during the rotation of the feeding cylinder 71.

[0024] Reference Figure 3 , Figure 6As shown, the rotating component 73 includes a drive cylinder 731, a drive rack 732, and a driven gear 733. The driven gear 733 is coaxially connected to the feeding cylinder 71. The drive rack 732 is located on one side of the driven gear 733 and meshes with it. The cylinder barrel of the drive cylinder 731 is fixedly located at one end of the drive rack 732, and the piston rod of the drive cylinder 731 is fixedly connected to the drive rack 732. By driving the drive rack 732 to move through the drive cylinder 731, the driven gear 733 can rotate under the meshing action of the drive rack 732, thereby driving the feeding cylinder 71 to rotate. Bearings 13 are embedded on the mixing box 1 at both ends of the feeding cylinder 71. The feeding cylinder 71 is connected to the inner ring of the bearing 13, which can improve the smoothness of the rotation process. The mixing box 1 has a guide bar 14 along the length of the drive rack 732 on its exterior. The drive rack 732 has a guide groove that matches the guide bar 14. Under the cooperation of the guide bar 14 and the guide groove, the drive rack 732 has high stability.

[0025] Reference Figure 5 As shown, the two feeding pipes 72 have the same spiral direction and pitch, and their starting positions are 180° apart on the circumference, thus they can be evenly distributed on the outer wall of the feeding cylinder 71. Multiple sets of spray elements 74 are distributed on both feeding pipes 72 along the axial direction of the feeding cylinder 71. The spray elements 74 on the two feeding pipes 72 are located on opposite sides of the cross-section of the feeding cylinder 71. In this embodiment, each set of spray elements 74 includes two nozzles 741. In other embodiments, each set of spray elements 74 may include three or four nozzles 741 to further improve the uniformity of material conveying.

[0026] Reference Figure 4 , Figure 5 As shown, along the axial direction of the feeding cylinder 71, each outlet 711 is located between two adjacent sets of spray elements 74 on the same feeding pipe 72; along the circumferential direction of the feeding cylinder 71, the outlet 711 is located between the spray assemblies of the two feeding pipes 72. When the spray element 74 of one feeding pipe 72 faces downwards, the spray element 74 of the other feeding pipe 72 faces upwards. At this time, the outlet 711 is located at the midpoint between the two sets of spray elements 74 in the cross-sectional direction of the feeding pipe 72. That is, rotating the feeding cylinder 71 clockwise or counterclockwise by 90° will make the outlet 711 face downwards. However, in the axial direction of the feeding pipe 72, the outlet 711 is located between two adjacent sets of spray elements 74 on the same feeding pipe 72. The falling position of the modified material is different from that of the asphalt and warm mix additive, making it less likely to clump under the action of asphalt and warm mix additive, thus affecting the quality of the asphalt mixture.

[0027] Reference Figure 4 , Figure 7As shown, the feeding cylinder 71 is equipped with an arc-shaped baffle 75. The length direction of the arc-shaped baffle 75 is consistent with the axial direction of the feeding cylinder 71. One end of the arc-shaped baffle 75 is fixedly connected to the mixing box 1 through a connecting seat 751, and the other end is rotatably connected to the end wall of the feeding cylinder 71 through a rotating disk 752. When the feeding cylinder 71 rotates to the point where the discharge port 711 is located below the arc-shaped baffle 75, the modified material can be discharged. When adding modified material into the feeding cylinder 71, the outlet 711 of the feeding cylinder 71 is positioned in the area above the arc-shaped baffle 75. At this time, the arc-shaped baffle 75 can limit the position of the modified material within the area enclosed by the arc-shaped baffle 75 and the lower part of the feeding cylinder 71, and the modified material will not be discharged. When it is necessary to add the modified material to the mixing box 1, the feeding cylinder 71 is driven to rotate at a specified angle so that the outlet 711 of the feeding cylinder 71 is positioned in the area below the arc-shaped baffle 75, and the modified material can be discharged from the outlet 711 into the mixing box 1.

[0028] Reference Figure 6 , Figure 8 As shown, a support base 8 is welded inside the mixing tank 1 and above the feeding cylinder 71 along the length of the feeding cylinder 71. The support base 8 is equipped with a sealing element 81 for blocking the spray element 74 and an auxiliary discharge element 82 for discharging the modified material from the outlet 711. When the feeding cylinder 71 rotates to the point where the spray element 74 of one of the feeding pipes 72 faces upwards, the sealing element 81 can block the spray element 74, thus preventing dust generated during mixing from entering the spray element 74 and causing blockage. Meanwhile, the downward-facing spray element 74 is spraying asphalt or warm mix agent, making it less prone to blockage. When the modified material is discharged from the outlet 711 downwards, because the modified material is made of materials such as rubber or resin, it easily accumulates at the outlet 711, causing blockage. The auxiliary discharge element 82 can easily discharge the accumulated modified material, thus preventing accumulation at the outlet 711.

[0029] Reference Figure 8 As shown, the sealing member 81 includes a fixed plate 811 and a telescopic baffle 812. The fixed plate 811 is fixedly installed on the support base 8, and the telescopic baffle 812 is located directly below the fixed plate 811 and connected to the fixed plate 811 through an arc-shaped spring piece 813. When the feeding cylinder 71 rotates and drives the spraying member 74 to move, the spraying member 74 can move to the lower part of the telescopic baffle 812. Under the action of the arc-shaped spring piece 813, the telescopic baffle 812 presses against the spraying member 74, thereby sealing the spraying member 74.

[0030] Reference Figure 8As shown, the auxiliary discharge component 82 includes an auxiliary rod 821, multiple auxiliary rings 822, and multiple discharge blocks 823. The auxiliary rod 821 is located on the upper part of the support base 8, and a lifting electric cylinder 824 is installed between the auxiliary rod 821 and the support base 8. The multiple auxiliary rings 822 are all fixedly connected to the bottom of the auxiliary rod 821 and correspond one-to-one with multiple discharge ports 711. The multiple discharge blocks 823 are correspondingly installed inside the multiple auxiliary rings 822, and the cross-sectional shape of the discharge blocks 823 is conical. By lifting the auxiliary rod 821 with the lifting electric cylinder 824, the multiple auxiliary rings 822 can simultaneously move the discharge blocks 823 upward and enter the feeding cylinder 71 through the discharge port 711. Then, by lifting the auxiliary rod 821 with the lifting electric cylinder 824, the discharge blocks 823 move out of the discharge port 711, thus carrying out the modified material and preventing the modified material from accumulating at the discharge port 711.

[0031] This embodiment also discloses a production method using the above-mentioned environmentally friendly warm-mix modified asphalt production device, including the following steps: S1. A certain amount of aggregate is conveyed from the aggregate supply box 2 into the mixing box 1, and a certain amount of filler is conveyed from the filler supply box 3 into the mixing box 1. The motor of the stirring shaft 11 is started to drive the stirring shaft 11 to rotate, and the aggregate and filler are mixed. S2. Asphalt is transported to one of the feeding pipes 72 through the asphalt supply tank 4, warm mix agent is transported to the other feeding pipe 72 through the warm mix agent supply tank 5, and modified material is transported to the feeding cylinder 71 through the modified material supply cylinder 6; when the discharge port 711 or the spray element 74 on the feeding pipe 72 is facing downward, the corresponding material can be transported between the two mixing shafts 11. S3. After a specified interval, the feeding cylinder 71 is driven to rotate by the rotating component 73 at a specified angle to switch the discharge position, so that the discharge port 711 of the feeding cylinder 71 and the two feeding pipes 72 alternately discharge materials, and the warm mix agent, asphalt and modified material are added to the mixing box 1 in batches and intermittently to improve the uniformity of the mixing process. S4. After adding the measured amount of warm mix agent, asphalt and modifier, stop the feeding process. The mixing shaft 11 continues to rotate in the mixing box 1 to mix the various materials evenly, thus completing the production process of environmentally friendly warm mix modified asphalt.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An environmentally friendly warm modified asphalt production device, comprising a mixing box (1), two stirring shafts (11) are arranged in the mixing box (1), the top of the mixing box (1) is provided with an aggregate feeding box (2), a filler feeding box (3), an asphalt feeding tank (4), a warm mixing agent feeding tank (5) and a modified material feeding cylinder (6), characterized in that, The feeding mechanism (7) for conveying asphalt, warm mixing agent and modified material to the space between the two stirring shafts (11) is arranged in the mixing box (1) and at the upper part of the stirring shaft (11), and the feeding mechanism (7) comprises a feeding cylinder (71) and two feeding pipes (72) spirally arranged on the outer wall of the feeding cylinder (71); The feeding cylinder (71) is arranged in the mixing box (1) in an inclined manner and is rotationally connected with the end wall of the mixing box (1), one side of the outer wall of the mixing box (1) is provided with a rotating member (73) for driving the rotation of the feeding cylinder (71), the mixing box (1) is provided with a material guide pipe (12) in communication with the highest end of the feeding cylinder (71), the discharge end of the modified material supply cylinder (6) is in communication with the material guide pipe (12), and a plurality of discharge ports (711) are arranged on the side wall of the feeding cylinder (71) along the length direction of the feeding cylinder (71); One of the two feeding pipes (72) is in communication with the discharge pipe of the asphalt supply tank (4), and the other feeding pipe (72) is in communication with the discharge pipe of the warm mixing agent supply tank (5), the spiral directions and pitches of the two feeding pipes (72) are the same, and the starting positions of the two feeding pipes (72) are separated by 180° on the circumference. A plurality of spray members (74) are arranged on the two feeding pipes (72) along the axis direction of the feeding cylinder (71), and the spray members (74) on the two feeding pipes (72) are respectively located on the opposite sides of the cross section of the feeding cylinder (71), and each group of spray members (74) comprises at least two spray heads (741).

2. The environmentally friendly warm mix modified asphalt production device according to claim 1, characterized in that, An arc-shaped baffle (75) is arranged in the feeding cylinder (71), the length direction of the arc-shaped baffle (75) is consistent with the axis direction of the feeding cylinder (71), one end of the arc-shaped baffle (75) is fixedly connected with the mixing box (1) through a connecting seat (751), the other end is rotationally connected with the end wall of the feeding cylinder (71) through a rotating disc (752), and the modified material can be discharged when the feeding cylinder (71) is rotated to the position that the discharge port (711) is located at the lower part of the arc-shaped baffle (75).

3. The environmentally friendly warm mix modified asphalt production device according to claim 1, characterized in that, A support seat (8) is arranged in the mixing box (1) and at the upper part of the feeding cylinder (71) along the length direction of the feeding cylinder (71), the support seat (8) is provided with a blocking member (81) for blocking the spray member (74) and an auxiliary discharge member (82) for discharging the modified material from the discharge port (711).

4. The environmentally friendly warm mix modified asphalt production device according to claim 3, characterized in that, The blocking member (81) comprises a fixed sheet (811) and a telescopic baffle (812), the fixed sheet (811) is fixedly arranged on the support seat (8), and the telescopic baffle (812) is arranged directly below the fixed sheet (811) and is connected with the fixed sheet (811) through an arc-shaped elastic sheet (813).

5. The environmentally friendly warm mix modified asphalt production device according to claim 3, characterized in that, The auxiliary discharging part (82) comprises an auxiliary rod (821), a plurality of auxiliary rings (822) and a plurality of discharging blocks (823), the auxiliary rod (821) is arranged at the upper portion of the support base (8), a lifting electric cylinder (824) is arranged between the auxiliary rod (821) and the support base (8), the plurality of auxiliary rings (822) are fixedly connected at the bottom of the auxiliary rod (821) and correspond to the plurality of discharging ports (711), and the plurality of discharging blocks (823) are arranged in the plurality of auxiliary rings (822) correspondingly, and the cross section of the discharging block (823) is in a conical shape.

6. The environmentally friendly warm mix modified asphalt production device according to claim 1, characterized in that, Each of the discharging ports (711) is located between two adjacent groups of spraying parts (74) on the same feeding pipe (72) along the axial direction of the feeding cylinder (71); and the discharging port (711) is located between the spraying assemblies of the two feeding pipes (72) along the circumferential direction of the feeding cylinder (71).

7. The environmentally friendly warm mix modified asphalt production device according to claim 1, characterized in that, The asphalt supply tank (4) and the warm mix agent supply tank (5) are respectively arranged at the two ends of the mixing box (1) outside, and the discharging pipes of the asphalt supply tank (4) and the warm mix agent supply tank (5) are connected with the feeding pipes (72) through flexible bellows (41). 8.The environmentally-friendly warm-mix modified asphalt production device according to claim 1, characterized in that, The rotating part (73) comprises a driving electric cylinder (731), a driving rack (732) and a driven gear (733), the driven gear (733) is coaxially connected to the feeding cylinder (71), the driving rack (732) is arranged on one side of the driven gear (733) and is engaged with the driven gear (733), and the cylinder barrel of the driving electric cylinder (731) is fixedly arranged at one end of the driving rack (732) and the piston rod of the driving electric cylinder (731) is fixedly connected with the driving rack (732). 9.The environmentally-friendly warm-mix modified asphalt production device according to claim 8, characterized in that, Bearings (13) are embedded at the two ends of the mixing box (1) and located at the two ends of the feeding cylinder (71), guide strips (14) are arranged on the outer portion of the mixing box (1) along the length direction of the driving rack (732), and guide grooves are arranged on the driving rack (732) and matched with the guide strips (14).

10. A production method using the environmentally friendly warm mix modified asphalt production device according to any one of claims 1-9, characterized in that, The method comprises the following steps: S1, a certain amount of aggregate is conveyed from the aggregate supply box (2) into the mixing box (1), a certain amount of filler is conveyed from the filler supply box (3) into the mixing box (1), and the motor of the stirring shaft (11) is started to drive the stirring shaft (11) to rotate, so that the aggregate and the filler are mixed; S2, asphalt is conveyed into one of the feeding pipes (72) through the asphalt supply tank (4), warm mix agent is conveyed into the other feeding pipe (72) through the warm mix agent supply tank (5), and modified material is conveyed into the feeding cylinder (71) through the modified material supply cylinder (6); when the spraying parts (74) on the discharging port (711) or the feeding pipe (72) are directed downward, the corresponding material can be conveyed between the two stirring shafts (11). S3, after a specified time interval, the feeding barrel (71) is driven to rotate a specified angle by the rotating member (73), the discharge site is switched, the discharge port (711) of the feeding barrel (71) is alternately discharged with the two feeding pipes (72), the warm mix agent, asphalt and modified material are added in batches and intermittently to the mixing box (1), so as to improve the uniformity of the mixing process; S4, after the quantitative warm mix agent, asphalt and modified material are added, the feeding process is stopped, the stirring shaft (11) continues to rotate in the mixing box (1) to mix the materials uniformly, and the production process of the environment-friendly warm mix modified asphalt is completed.

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