Dry-method direct feeding device for rubber and plastic asphalt modifier and intelligent control system

Abstract

The invention relates to the technical field of preparation of road materials, and particularly discloses a rubber and plastic asphalt modifier dry direct feeding device and an intelligent control system. The inner wall of the protective sleeve is rotatably connected with a storage box, the inner wall of the storage box is fixedly connected with an annular heating rod, and the inner bottom wall of the storage box is fixedly connected with a conical sleeve box; through arrangement of a storage box, a heating rod, a first driving motor, stirring blades, a stirring rod, a discharging pipe, a baffle, a first servo motor and a transmission rod, a protective sleeve serves as a main body supporting structure, the storage box is used for containing a modifier material, and the heating rod conducts uniform heating to ensure that the temperature of the material is stable; the stirring blades and the stirring rods in the conical sleeve box work together to prevent materials from caking, and the discharging pipe is matched with the baffle and the sealing plate driven by the servo motor to accurately control the discharging amount, so that the purpose of efficient, uniform and controllable dry-method direct feeding of the rubber and plastic asphalt modifier is achieved, the fluidity of the materials is guaranteed, and accurate quantitative feeding is achieved.

Description

Technical Field

[0001] This invention belongs to the field of road material preparation technology, specifically relating to a dry direct injection device and intelligent control system for rubber and plastic asphalt modifiers. Background Technology

[0002] In the field of road materials science and engineering, rubber-plastic asphalt, as a high-performance pavement material that combines the advantages of rubber and plastic modification, has become a key material for improving road service life and driving comfort due to its excellent anti-aging properties, rutting resistance, and superior low-temperature toughness. With the rapid development of transportation infrastructure construction and the continuous improvement of pavement performance requirements, the addition technology of rubber-plastic asphalt modifiers has become a research hotspot. Traditionally, rubber-plastic asphalt modification is mostly carried out using wet process, that is, the modifier and base asphalt are mixed and sheared at high temperature to form a uniform modified asphalt. However, this process has high energy consumption and complex production process, and long-term treatment of the modifier at high temperature may lead to its performance degradation, affecting the final modification effect.

[0003] In recent years, dry direct-injection technology has gradually become a new research direction in the field of rubber and plastic asphalt modification due to its advantages such as simple operation, low energy consumption, and controllable dispersion uniformity of modifiers. Dry direct-injection technology effectively avoids the high-temperature treatment and complex equipment requirements of wet modification by directly adding rubber and plastic asphalt modifiers in the form of solid particles into the asphalt mixture mixing process, simplifying the production process and reducing energy consumption. However, the existing dry direct-injection technology still faces a significant technical bottleneck in practical applications, namely, insufficient control over the accuracy and uniformity of modifier addition. Specifically, due to the differences in physical properties (such as particle size, density, and flowability) between modifier particles and asphalt mixtures, direct addition can easily lead to agglomeration and uneven distribution, resulting in a non-uniform distribution of the modification effect in the asphalt mixture, which in turn affects the overall performance and service life of the pavement. This problem not only limits the widespread application of dry direct-injection technology in rubber and plastic asphalt modification but also increases the construction difficulty and cost, thus requiring improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a dry direct application device and intelligent control system for rubber and plastic asphalt modifiers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A dry direct-injection device for rubber and plastic asphalt modifiers includes:

[0007] Protective sleeve;

[0008] The inner wall of the protective sleeve is rotatably connected to a storage box, the inner wall of the storage box is fixedly connected to a heating rod arranged in a ring, and the inner bottom wall of the storage box is fixedly connected to a conical sleeve.

[0009] A first drive motor is fixedly connected to the inner wall of the conical sleeve. A drive rod is installed at the output end of the first drive motor. Multiple sets of stirring blades are fixedly connected to the surface of the drive rod. An agitator is fixedly connected to the bottom of the stirring blades near the surface of the conical sleeve.

[0010] The bottom of the storage box is fixedly connected to a discharge pipe, and the bottom end of the discharge pipe is inserted through the inner bottom wall of the protective sleeve. A baffle is fixedly connected to the inner wall of the discharge pipe, and a first groove is opened on the surface of the baffle. A first servo motor is fixedly connected to the inner bottom wall of the conical sleeve. A transmission rod is installed at the output end of the first servo motor. A sealing plate is fixedly connected to the bottom end of the transmission rod. A second groove is opened on the surface of the sealing plate, and the bottom of the sealing plate is rotatably connected to the top of the baffle. The dimensions of the first groove and the second groove correspond.

[0011] Preferably, a protective box is fixedly connected to the surface of the protective sleeve, a second drive motor is fixedly connected to the inner wall of the protective box, a movable rod is installed at the output end of the second drive motor, a first drive gear is fixedly connected to the top of the movable rod, a first transmission gear is meshed with the surface of the first drive gear, and the inner wall of the first transmission gear is fixedly connected to the surface of the storage box, a feed pipe is fixedly connected to the top of the storage box, and a control panel is fixedly connected to the surface of the protective sleeve.

[0012] Preferably, support rods are fixedly connected to the bottom four sides of the protective sleeve, a placement plate is fixedly connected to the bottom end of the support rods, a weight sensor is fixedly connected to the inner wall of the placement plate, an overlapping plate is fixedly connected to the top of the weight sensor, a weighing frame is overlapped on the top of the overlapping plate, and connecting blocks are fixedly connected to both sides of the weighing frame.

[0013] Preferably, an assembly frame is fixedly connected to the surface of the placement plate, a second servo motor is fixedly connected to the inner wall of the assembly frame, a rotating rod is installed at the output end of the second servo motor, a second drive gear is fixedly connected to the front end of the rotating rod, a second transmission gear is meshed with the surface of the second drive gear, and a connecting rotating rod is fixedly connected to the inner wall of the second transmission gear.

[0014] Preferably, both ends of the connecting rod are fixedly connected to a right-angle connecting frame, and the top of the right-angle connecting frame is fixedly connected to a mechanical clamp, with the inner wall of the mechanical clamp overlapping the surface of the connecting block.

[0015] Preferably, a protective barrier is fixedly connected to the top of the placement plate, and a controller is fixedly connected to the top of the placement plate on the surface of the protective barrier.

[0016] An intelligent control system for a dry direct application device for rubber and plastic asphalt modifiers includes:

[0017] The central controller is used to receive and process signals from the weight sensor, heating rod, and drive motor;

[0018] The dynamic weighing module is connected to a weight sensor to monitor the weight of the material in the weighing frame in real time and generate control commands based on the preset feeding threshold.

[0019] The temperature control module, connected to the heating rod, adjusts the heating power using a PID algorithm to maintain the temperature inside the storage box within a set range. The output formula of the PID algorithm is:

[0020]

[0021] Where u(t) is the control output, e(t) is the temperature deviation, and K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0022] The feeding control module is connected to the first servo motor and the second servo motor. It precisely controls the rotation angle of the sealing plate and the start and stop of the mechanical clamp according to the instructions of the dynamic weighing module to achieve quantitative feeding.

[0023] Preferably, the dynamic weighing module further includes:

[0024] A filtering algorithm is used to eliminate noise in the signal acquired by the weight sensor. Its formula is:

[0025] W filtered =αW current +(1-α)W previous ;

[0026] Among them, W filtered W represents the filtered weight value. current For the current sampled value, W previous The previous filter value is α, and the filter coefficient is α (0 < α < 1).

[0027] The adaptive calibration unit dynamically adjusts the zero-point offset value of the weight sensor according to changes in ambient temperature.

[0028] Preferably, the feeding control module controls the rotation angle of the sealing plate through the following steps:

[0029] Based on the target feed rate Q targetGiven the material density ρ, calculate the required opening area A:

[0030]

[0031] Where v is the discharge flow rate and t is the feeding time;

[0032] The sealing plate is rotated by the first servo motor so that the overlapping area of ​​the first slot and the second slot is equal to A.

[0033] Preferably, the central controller is also connected to a cloud server for storing historical feeding data, temperature curves, and equipment operating status.

[0034] The PID parameters and feeding strategy are optimized using a machine learning model. This model employs a linear regression algorithm, and its loss function is:

[0035]

[0036] Among them, y i This is the actual value. is the predicted value, and N is the sample size.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] (1) By setting up a protective sleeve, storage box, heating rod, conical sleeve, first drive motor, drive rod, stirring blade, stirring rod, discharge pipe, baffle, first servo motor and transmission rod, the protective sleeve serves as the main support structure, the storage box is used to contain the modifier material, the heating rod heats evenly to ensure the material temperature is stable, the stirring blade and stirring rod in the conical sleeve work together to prevent the material from clumping, and the discharge pipe, together with the baffle and the sealing plate driven by the servo motor, accurately controls the discharge amount, thereby achieving the purpose of efficient, uniform and controllable dry direct injection of rubber and plastic asphalt modifier, which not only ensures the fluidity of the material, but also realizes precise quantitative feeding, and improves construction efficiency and mixing quality.

[0039] (2) Through the setup of the protective box, the second drive motor, the movable rod, the first drive gear, the first transmission gear, the feed pipe and the control panel, the second drive motor in the protective box drives the storage box to rotate through the gear transmission system, so that the material is more evenly distributed during the heating process. The feed pipe facilitates the addition of materials, and the control panel provides a human-machine interface, thereby realizing the efficient and uniform feeding and mixing process of the modifier. This not only improves the dispersibility of the material, but also simplifies the operation process, making the entire feeding process more automated and intelligent.

[0040] (3) By setting up a support rod, a placement plate, a weight sensor, an overlap plate, a weighing frame, a connecting block, an assembly frame, a second servo motor, a rotating rod, a second drive gear, a second transmission gear, a connecting rotating rod, a right-angle connecting frame, a mechanical clamp, a protective enclosure, and a controller, the support rod and the placement plate form a stable working platform. The weight sensor monitors the weight of the material in real time. The mechanical clamp driven by the servo motor precisely controls the flipping of the weighing frame to feed the material. The protective enclosure ensures operational safety, thereby realizing the full automation of material weighing and feeding. While ensuring weighing accuracy, it improves the accuracy and reliability of feeding, making the entire construction process more efficient and controllable. Attached Figure Description

[0041] Figure 1 This is one of the perspective views of the present invention;

[0042] Figure 2 This is a second perspective view of the present invention;

[0043] Figure 3 This is a perspective view of the first transmission gear of the present invention;

[0044] Figure 4 This is a perspective view of the stirring blade of the present invention;

[0045] Figure 5 This is a perspective view of the weight sensor of the present invention;

[0046] Figure 6 This is a perspective view of the mechanical fixture of the present invention;

[0047] Figure 7 This is a perspective view of the sealing plate of the present invention;

[0048] In the diagram: 1. Protective sleeve; 2. Storage box; 3. Heating rod; 4. Conical sleeve; 5. First drive motor; 6. Drive rod; 7. Stirring blade; 8. Agitator rod; 9. Discharge pipe; 10. Baffle; 11. First servo motor; 12. Transmission rod; 13. Sealing plate; 14. Protective box; 15. Second drive motor; 16. Movable rod; 17. First drive gear; 18. First transmission gear; 19. Feed pipe; 20. Control panel; 21. Support rod; 22. Placement plate; 23. Weight sensor; 24. Overlap plate; 25. Weighing frame; 26. Connecting block; 27. Assembly frame; 28. Second servo motor; 29. ​​Rotating rod; 30. Second drive gear; 31. Second transmission gear; 32. Connecting rotating rod; 33. Right-angle connecting frame; 34. Mechanical clamp; 35. Protective enclosure; 36. Controller. Detailed Implementation

[0049] 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. 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.

[0050] Example 1:

[0051] Please see Figures 1 to 7 As shown, a dry direct injection device for rubber and plastic asphalt modifier includes: a protective sleeve 1;

[0052] The inner wall of the protective sleeve 1 is rotatably connected to a storage box 2, the inner wall of the storage box 2 is fixedly connected to a heating rod 3 arranged in a ring, and the inner bottom wall of the storage box 2 is fixedly connected to a conical sleeve 4.

[0053] A first drive motor 5 is fixedly connected to the inner wall of the conical sleeve 4. A drive rod 6 is installed at the output end of the first drive motor 5. Multiple sets of stirring blades 7 are fixedly connected to the surface of the drive rod 6. An agitator 8 is fixedly connected to the bottom of the stirring blades 7 near the surface of the conical sleeve 4.

[0054] The bottom of the storage box 2 is fixedly connected to the discharge pipe 9, and the bottom end of the discharge pipe 9 is inserted through the inner bottom wall of the protective sleeve 1. The inner wall of the discharge pipe 9 is fixedly connected to the baffle 10, and the surface of the baffle 10 is provided with a first groove. The inner bottom wall of the conical sleeve 4 is fixedly connected to the first servo motor 11, and the output end of the first servo motor 11 is equipped with a transmission rod 12. The bottom end of the transmission rod 12 is fixedly connected to the sealing plate 13, and the surface of the sealing plate 13 is provided with a second groove. The bottom of the sealing plate 13 is rotatably connected to the top of the baffle 10. The dimensions of the first groove and the second groove correspond to each other.

[0055] In use, the protective sleeve 1 serves as the main support structure, and the storage box 2, which is rotatably connected to its inner wall, is used to hold the modifier material. The heating rod 3, which is arranged in a ring on the inner wall of the storage box 2, ensures the material temperature is stable through uniform heating. The conical sleeve 4 is fixed to the bottom wall of the storage box 2. The first drive motor 5 installed inside it drives multiple sets of stirring blades 7 to rotate through the drive rod 6. At the same time, the stirring rod 8 connected to the bottom of the stirring blades 7 further disperses the material at the bottom of the conical sleeve 4 to prevent clumping. The discharge pipe 9 at the bottom of the storage box 2 passes through the protective sleeve 1. The baffle 10 fixed on its inner wall has a first slot, which cooperates with the second slot on the sealing plate 13 driven by the first servo motor 11 through the transmission rod 12. By controlling the overlapping area of ​​the two slots, the discharge amount can be precisely adjusted. The heating rod 3 maintains the fluidity of the material, and the stirring blades 7 and stirring rod 8 prevent the material from sticking together, so that the material is mixed evenly. The sealing plate 13 driven by the servo motor realizes quantitative feeding, and finally achieves the purpose of efficient, uniform and controllable dry direct feeding of rubber and plastic asphalt modifier.

[0056] Example 2:

[0057] Please see Figures 1 to 7 As shown, a protective box 14 is fixedly connected to the surface of the protective sleeve 1, a second drive motor 15 is fixedly connected to the inner wall of the protective box 14, a movable rod 16 is installed at the output end of the second drive motor 15, a first drive gear 17 is fixedly connected to the top of the movable rod 16, a first transmission gear 18 is meshed with the surface of the first drive gear 17, and the inner wall of the first transmission gear 18 is fixedly connected to the surface of the storage box 2. A feed pipe 19 is fixedly connected to the top of the storage box 2, and a control panel 20 is fixedly connected to the surface of the protective sleeve 1.

[0058] In use, the protective box 14 is fixed to the surface of the protective sleeve 1. The second drive motor 15 installed inside drives the first drive gear 17 to rotate through the movable rod 16. The first drive gear 17 meshes with the first transmission gear 18 fixed to the surface of the storage box 2, thereby driving the storage box 2 to rotate inside the protective sleeve 1, making the material more evenly distributed during heating and anti-sticking processes. The feed pipe 19 is fixed to the top of the storage box 2 and is used to add modifier material into the storage box 2. The control panel 20 is located on the surface of the protective sleeve 1 and is used to receive user commands and control the start, stop and speed of the second drive motor 15 to realize the automatic adjustment of the rotation of the storage box 2. The second drive motor 15 drives the storage box 2 to rotate through the gear transmission system, the feed pipe 19 realizes convenient material addition, and the control panel 20 provides a human-machine interface, which together realize the efficient and uniform feeding and mixing process of the modifier.

[0059] Example 3:

[0060] Please see Figures 1 to 7As shown, support rods 21 are fixedly connected to all four sides of the bottom of the protective sleeve 1. A placement plate 22 is fixedly connected to the bottom end of the support rods 21. A weight sensor 23 is fixedly connected to the inner wall of the placement plate 22. An overlapping plate 24 is fixedly connected to the top of the weight sensor 23. A weighing frame 25 overlaps the top of the overlapping plate 24. Connecting blocks 26 are fixedly connected to both sides of the weighing frame 25. An assembly frame 27 is fixedly connected to the surface of the placement plate 22. A second servo motor 28 is fixedly connected to the inner wall of the assembly frame 27. A rotating rod 29 is installed at the output end of the second servo motor 28. A second drive gear 30 is fixedly connected to the front end of the rotating rod 29. A second transmission gear 31 is meshed with the surface of the second drive gear 30. A connecting rod 32 is fixedly connected to the inner wall of the second transmission gear 31. A right-angle connecting frame 33 is fixedly connected to both ends of the connecting rod 32. A mechanical clamp 34 is fixedly connected to the top of the right-angle connecting frame 33. The inner wall of the mechanical clamp 34 overlaps the surface of the connecting block 26. A protective barrier 35 is fixedly connected to the top of the placement plate 22. A controller 36 is fixedly connected to the top of the placement plate 22 on the surface of the protective barrier 35.

[0061] In use, the support rod 21 is fixed to the bottom of the protective sleeve 1, supporting the placement plate 22 to form a stable working platform. The weight sensor 23 embedded in the placement plate 22 is connected to the weighing frame 25 through the overlapping plate 24. During the material addition process, the mechanical clamp 34 remains separated from the weighing frame 25 to ensure that the weight sensor 23 can accurately measure the weight of the material. When the material reaches the preset weight, the controller 36 starts the second servo motor 28, which drives the second drive gear 30 to rotate through the rotating rod 29. The second drive gear 30 meshes with the second transmission gear 31, causing the connecting rod 32 to rotate, which in turn drives the mechanical clamp 34 on the right-angle connecting frame 33 to clamp the connecting blocks 26 on both sides of the weighing frame 25, flipping the weighing frame 25 to realize the material delivery. The protective barrier 35 plays a safety protection role, preventing material splashing and realizing the full automation of material weighing and delivery. During the weighing process, the mechanical clamp 34 does not contact the weighing frame 25, ensuring weighing accuracy. During delivery, the flipping action is precisely controlled by the servo system to ensure the accuracy and reliability of material delivery.

[0062] Example 4:

[0063] Please see Figures 1 to 7 As shown, an intelligent control system for a dry direct application device for rubber and plastic asphalt modifiers includes:

[0064] The central controller is used to receive and process signals from the weight sensor 23, the heating rod 3 and the drive motor;

[0065] The dynamic weighing module is connected to the weight sensor 23 to monitor the weight of the material in the weighing frame 25 in real time and generate control commands according to the preset feeding threshold.

[0066] The temperature control module, connected to the heating rod 3, adjusts the heating power using a PID algorithm to maintain the temperature inside the storage box 2 within a set range. The output formula of the PID algorithm is:

[0067]

[0068] Where u(t) is the control output, e(t) is the temperature deviation, and K p K i K d These are the proportional, integral, and differential coefficients, respectively.

[0069] The feeding control module is connected to the first servo motor 11 and the second servo motor 28. It precisely controls the rotation angle of the sealing plate 13 and the start and stop of the mechanical clamp 34 according to the instructions of the dynamic weighing module to realize quantitative feeding.

[0070] The dynamic weighing module also includes:

[0071] A filtering algorithm is used to eliminate noise in the signal acquired by the weight sensor 23. The formula is as follows:

[0072] W filtered =αW current +(1-α)W previous ;

[0073] Among them, W filtered W represents the filtered weight value. current For the current sampled value, W previous The previous filter value is α, and the filter coefficient is α (0 < α < 1).

[0074] The adaptive calibration unit dynamically adjusts the zero-point offset value of the weight sensor according to changes in ambient temperature.

[0075] The feeding control module controls the rotation angle of the sealing plate 13 through the following steps:

[0076] Based on the target feed rate Q target Given the material density ρ, calculate the required opening area A:

[0077]

[0078] Where v is the discharge flow rate and t is the feeding time;

[0079] The sealing plate 13 is rotated by the first servo motor 11, so that the overlapping area of ​​the first slot and the second slot is equal to A.

[0080] The central controller is also connected to a cloud server to store historical feeding data, temperature profiles, and equipment operating status.

[0081] The PID parameters and feeding strategy are optimized using a machine learning model. The model employs a linear regression algorithm, and its loss function is:

[0082]

[0083] Among them, y i This is the actual value. is the predicted value, and N is the sample size.

[0084] Example 5:

[0085] Please see Figures 1 to 7 As shown, in highway pavement construction, rubber-plastic asphalt modifiers are widely used to improve the high-temperature stability, low-temperature crack resistance, and durability of asphalt mixtures. Traditional wet modification processes require pre-mixing the modifier with asphalt, which has problems such as high energy consumption, complex processes, and uneven dispersion of the modifier. Therefore, the dry direct-dispensing device and intelligent control system for rubber-plastic asphalt modifiers described in this application are introduced to achieve precise dispensing, uniform mixing, and efficient construction of the modifier.

[0086] Before construction, technicians installed the dry direct-injection device for rubber-plastic asphalt modifier near the asphalt mixing plant. The device was fixed to a level surface using support rods and a placement plate, ensuring the weight sensor and weighing frame were stable. The central controller was connected to the mixing plant's control system to complete signal integration. The heating rod and mixing system were powered on and tested to confirm that the temperature control module and dynamic weighing module were functioning correctly.

[0087] Rubber and plastic asphalt modifier granules are fed into the storage box through the feed pipe. The control panel activates the heating rod, and the temperature control module uses a PID algorithm to maintain the temperature inside the storage box within the set range to prevent the modifier from clumping. Simultaneously, the second drive motor drives the storage box to rotate slowly, ensuring that the modifier is heated evenly; the first drive motor drives the stirring blades and stirring rod to continuously stir the material, further ensuring particle dispersion.

[0088] When the mixing plant issues a feeding command, the intelligent control system activates the dynamic weighing module. The weighing frame receives the modifier from the discharge pipe, the weight sensor monitors the material weight in real time, and a filtering algorithm eliminates noise interference. When the weight approaches a preset threshold, the feeding control module calculates the required rotation angle of the sealing plate, and the first servo motor precisely adjusts the overlap area between the first and second slots to control the discharge speed. Once the target weight is reached, the mechanical clamps tighten the connecting blocks on both sides of the weighing frame, flipping it over to the top of the mixing silo, completing the feeding process.

[0089] The modifier, aggregate, and asphalt are dry-mixed evenly in the mixing bin, and then a modified asphalt mixture is formed through a wet-mixing process. During the mixing process, the cloud server of the control system records the feeding data, temperature curves, and equipment status in real time, and optimizes the subsequent feeding strategy through machine learning models to further improve the quality stability of the mixture.

[0090] During construction breaks, the system automatically enters standby mode, and the heating rod maintains a low temperature to prevent the modifier from solidifying. Technicians regularly check the wear of the mixing blades and sealing plates, and adjust the PID parameters and feeding time based on historical data to ensure long-term operational accuracy.

[0091] Working Principle: First, the rubber and plastic modifier granules enter the storage box through the feed pipe. A ring-shaped heating rod installed on the inner wall of the storage box evenly heats the material, ensuring the modifier maintains a suitable temperature and preventing clumping or adhesion. Simultaneously, the storage box is slowly rotated by a second drive motor via a gear transmission system, making the material more evenly distributed during heating. A first drive motor is located inside a conical sleeve at the bottom of the storage box. Its output end is connected to a drive rod that drives multiple sets of stirring blades to rotate. The stirring rods at the bottom of the blades further disperse the material, preventing it from accumulating at the bottom of the cone and ensuring the fluidity of the modifier. When feeding is required, the intelligent control system activates the dynamic weighing module. Weight sensors monitor the weight of the material in the weighing frame in real time, and a filtering algorithm eliminates environmental interference to ensure measurement accuracy. The feeding control module calculates the required rotation angle of the sealing plate based on the preset feeding amount. The first servo motor drives the transmission rod to rotate the sealing plate, causing the first groove of the baffle and the second groove of the sealing plate to form a specific overlap area, thereby precisely controlling the discharge speed and feeding amount. Once the material reaches the target weight, the second servo motor drives the mechanical clamp via a gear transmission system to clamp the connecting blocks on both sides of the weighing frame, flipping the weighing frame and precisely adding the modifier into the mixing bin. Throughout the process, the temperature control module dynamically adjusts the heating power using a PID algorithm to ensure stable temperature inside the storage box; the central controller receives sensor signals in real time, coordinates the operation of each module, and stores the operating data on a cloud server, using machine learning to optimize the control strategy and ensure long-term accuracy and stability. This device, through the synergistic effect of mechanical stirring, dynamic weighing, intelligent temperature control, and servo drive, achieves efficient, uniform, and automated addition of rubber and plastic asphalt modifiers, significantly improving construction efficiency and mixture quality.

[0092] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dry direct application device for rubber and plastic asphalt modifiers, characterized in that, include: Protective sleeve (1); The inner wall of the protective sleeve (1) is rotatably connected to a storage box (2), the inner wall of the storage box (2) is fixedly connected to a heating rod (3) arranged in a ring, and the inner bottom wall of the storage box (2) is fixedly connected to a conical sleeve (4). The inner wall of the conical sleeve (4) is fixedly connected to a first drive motor (5), and a drive rod (6) is installed at the output end of the first drive motor (5). Multiple sets of stirring blades (7) are fixedly connected to the surface of the drive rod (6), and an agitator (8) is fixedly connected to the bottom of the stirring blades (7) near the surface of the conical sleeve (4). The bottom of the storage box (2) is fixedly connected to a discharge pipe (9), and the bottom end of the discharge pipe (9) is inserted through the inner bottom wall of the protective sleeve (1). The inner wall of the discharge pipe (9) is fixedly connected to a baffle (10). The surface of the baffle (10) is provided with a first slot. The inner bottom wall of the conical sleeve (4) is fixedly connected to a first servo motor (11). The output end of the first servo motor (11) is equipped with a transmission rod (12). The bottom end of the transmission rod (12) is fixedly connected to a sealing plate (13). The surface of the sealing plate (13) is provided with a second slot, and the bottom of the sealing plate (13) is rotatably connected to the top of the baffle (10). The dimensions of the first slot and the second slot correspond to each other.

2. The dry direct-injection device for rubber and plastic asphalt modifier according to claim 1, characterized in that: A protective box (14) is fixedly connected to the surface of the protective sleeve (1). A second drive motor (15) is fixedly connected to the inner wall of the protective box (14). A movable rod (16) is installed at the output end of the second drive motor (15). A first drive gear (17) is fixedly connected to the top of the movable rod (16). A first transmission gear (18) is meshed with the surface of the first drive gear (17). The inner wall of the first transmission gear (18) is fixedly connected to the surface of the storage box (2). A feed pipe (19) is fixedly connected to the top of the storage box (2). A control panel (20) is fixedly connected to the surface of the protective sleeve (1).

3. The dry direct-injection device for rubber and plastic asphalt modifier according to claim 1, characterized in that: Support rods (21) are fixedly connected to the bottom of the protective sleeve (1) around its perimeter. A placement plate (22) is fixedly connected to the bottom end of the support rods (21). A weight sensor (23) is fixedly connected to the inner wall of the placement plate (22). An overlapping plate (24) is fixedly connected to the top of the weight sensor (23). A weighing frame (25) overlaps the top of the overlapping plate (24). Connecting blocks (26) are fixedly connected to both sides of the weighing frame (25).

4. The dry direct injection device for rubber and plastic asphalt modifier according to claim 3, characterized in that: An assembly frame (27) is fixedly connected to the surface of the placement plate (22). A second servo motor (28) is fixedly connected to the inner wall of the assembly frame (27). A rotating rod (29) is installed at the output end of the second servo motor (28). A second drive gear (30) is fixedly connected to the front end of the rotating rod (29). A second transmission gear (31) is meshed with the surface of the second drive gear (30). A connecting rod (32) is fixedly connected to the inner wall of the second transmission gear (31).

5. The dry direct injection device for rubber and plastic asphalt modifier according to claim 4, characterized in that: Both ends of the connecting rod (32) are fixedly connected to a right-angle connecting frame (33), and the top of the right-angle connecting frame (33) is fixedly connected to a mechanical clamp (34), and the inner wall of the mechanical clamp (34) overlaps the surface of the connecting block (26).

6. The dry direct injection device for rubber and plastic asphalt modifier according to claim 3, characterized in that: A protective barrier (35) is fixedly connected to the top of the placement plate (22), and a controller (36) is fixedly connected to the top of the placement plate (22) on the surface of the protective barrier (35).

7. An intelligent control system for a dry direct-injection device for rubber and plastic asphalt modifiers, applicable to the dry direct-injection device for rubber and plastic asphalt modifiers as described in any one of claims 1 to 6, characterized in that, include: The central controller is used to receive and process signals from the weight sensor (23), the heating rod (3) and the drive motor; The dynamic weighing module is connected to the weight sensor (23) to monitor the weight of the material in the weighing frame (25) in real time and generate control commands according to the preset feeding threshold. The temperature control module is connected to the heating rod (3) and adjusts the heating power through a PID algorithm to maintain the temperature inside the storage box (2) within a set range. The output formula of the PID algorithm is: Where u(t) is the control output, e(t) is the temperature deviation, and K p K i K d These are the proportional, integral, and differential coefficients, respectively. The feeding control module is connected to the first servo motor (11) and the second servo motor (28). According to the instructions of the dynamic weighing module, it precisely controls the rotation angle of the sealing plate (13) and the start and stop of the mechanical clamp (34) to realize quantitative feeding.

8. The intelligent control system of the dry direct injection device for rubber and plastic asphalt modifier according to claim 7, characterized in that, The dynamic weighing module also includes: A filtering algorithm is used to eliminate noise in the signal acquired by the weight sensor (23), and its formula is as follows: W filtered =αW current +(1-α)W previous ; Among them, W filtered W represents the filtered weight value. current For the current sampled value, W previous The previous filter value is α, and the filter coefficient is α (0 < α < 1). The adaptive calibration unit dynamically adjusts the zero-point offset value of the weight sensor according to changes in ambient temperature.

9. The intelligent control system of the dry direct injection device for rubber and plastic asphalt modifier according to claim 7, characterized in that, The feeding control module controls the rotation angle of the sealing plate (13) through the following steps: Based on the target feed rate Q target Given the material density ρ, calculate the required opening area A: Where v is the discharge flow rate and t is the feeding time; The sealing plate (13) is rotated by the first servo motor (11) so that the overlapping area of ​​the first slot and the second slot is equal to A.

10. The intelligent control system of the dry direct injection device for rubber and plastic asphalt modifier according to claim 7, characterized in that, The central controller is also connected to a cloud server for storing historical feeding data, temperature curves, and equipment operating status. The PID parameters and feeding strategy are optimized using a machine learning model. This model employs a linear regression algorithm, and its loss function is: Among them, y i This is the actual value. is the predicted value, and N is the sample size.

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