Intelligent low-carbon thermal excitation direct injection sbs modified asphalt mixture processing device and method

Abstract

The application relates to a kind of intelligent low-carbon thermal excitation direct injection SBS modified asphalt mixture processing equipment and method, belong to traffic engineering technical field.The processing equipment includes mixing cylinder, matrix asphalt filling device, feeding channel, air feeder, feeding bin, feeding bin, spiral feeder and material storage device and the like structure.The original "weighing + long distance feeding" is changed to "feeding weighing + feeding weighing + ultra-short distance feeding" mode in the application, and on the basis of high temperature thermal excitation, SBS modifier is mixed together with matrix asphalt in "bullet penetration" cross shear mode, space adhesion and network structure are built, and excellent SBS modified asphalt mixture is formed, energy saving and emission reduction reaches about 90%, and is easy to popularize and apply.

Description

Technical Field

[0001] This invention belongs to the field of transportation engineering technology, specifically relating to an intelligent, low-carbon, thermally activated, direct-injection SBS modified asphalt mixture processing equipment and method. Background Technology

[0002] SBS (Styrene-Butadiene Composite) is a styrene-based thermoplastic elastomer, a copolymer of styrene and butadiene. It combines the high elasticity of rubber with the high strength of plastics, exhibits good weather resistance, and is easy to process. SBS-modified asphalt is made by adding a certain proportion of SBS modifier to base asphalt. The excellent properties of SBS are utilized to modify the base asphalt, significantly improving its high and low temperature performance, rutting resistance, fatigue resistance, UV aging resistance, and load-bearing capacity. Therefore, SBS-modified asphalt is highly favored in the highway industry, widely used in transportation, and in high demand, making it a major type of modified asphalt used in road construction, supporting the rapid development of highways in my country.

[0003] However, most current SBS modified asphalt preparation methods utilize the plant-mixed wet modification method. This involves mixing the SBS modifier with the base asphalt at high temperatures (generally around 180°C) in a factory, dispersing the SBS modifier into the base asphalt through processes such as swelling, shearing, and stirring. This method is currently the most widely used for preparing SBS modified asphalt materials both domestically and internationally. However, it also has insurmountable technical drawbacks. Firstly, the SBS modifier in this method is prone to segregation from the asphalt, leading to variations in the asphalt's properties and causing significant difficulties in subsequent storage and transportation. Secondly, this method requires high-temperature heating (around 180°C) during the SBS modification process, incurring substantial costs in manpower, machinery, and fuel, while also generating significant carbon emissions, making it both uneconomical and environmentally unfriendly. Thirdly, the SBS modified asphalt prepared using this method requires high temperatures in the factory... After modification, the asphalt needs to be transported to the mixing plant at high temperatures for use, or transported to the mixing plant at room temperature for secondary heating before use. Whether it is high-temperature transportation or secondary heating on site, the SBS modifier in the prepared SBS modified asphalt will undergo varying degrees of thermal decomposition, resulting in a continuous decline in the performance of the SBS modified asphalt. Fourthly, the preparation of SBS modified asphalt using this method requires a large investment in site fees, equipment fees, and labor costs in the early stage, which is a huge investment. At the same time, the SBS modifier is pre-mixed into the base asphalt in the factory, making it difficult for the on-site user to monitor the modification process, which complicates quality management.

[0004] Currently, there is another method for preparing SBS modified asphalt materials. This method involves improving the molecular structure of the SBS modifier and then manually or mechanically adding the modifier directly into the mixing plant's mixing tank through a feeding port. The SBS modifier is then mixed evenly with the base asphalt and aggregates to form a mixture. This method, compared to the wet method, is generally called the dry method. While this method solves most of the technical problems of wet-process modified asphalt, it also has certain drawbacks. Firstly, adding the SBS modifier through the feeding port leads to uneven dispersion and accumulation of the modifier. Secondly, the disordered mixing of the added SBS modifier with the base asphalt and aggregates can cause variability in the bonding properties between the aggregates, resulting in heterogeneity in the performance of the asphalt mixture. Furthermore, in practical engineering, manual feeding is not only inefficient but also prone to omissions, further exacerbating the variability in the performance of the SBS modified asphalt. When mechanical feeding is used, the mixing cylinder of a typical mixing plant is far from the ground. During the pneumatic feeding process using plastic pipes, SBS modifier is prone to adhere to the pipe wall. The finer the SBS modifier particles, the more severe the adhesion to the pipe wall, leading to inaccurate SBS modifier dosage. This results in unstable performance and high variability of SBS modified asphalt.

[0005] Therefore, overcoming the shortcomings of existing technologies is an urgent problem to be solved in the field of transportation engineering technology. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent, low-carbon, thermally activated, direct-injection SBS modified asphalt mixture processing equipment and method. This addresses existing engineering and technical problems in SBS modified asphalt materials, such as SBS modifier segregation and variation, high-temperature decomposition, high energy consumption, high carbon emissions, high investment, and difficulty in dosage monitoring. It avoids the high-temperature thermal decomposition and performance degradation of SBS modifiers during factory premixing, high-temperature transportation, and secondary heating, while reducing carbon emissions, highlighting low-carbon and environmental protection requirements, and saving initial investment. The invention innovatively proposes precise control dual-weighing technology and spatial three-dimensional thermally activated mixing and modification technology, changing the original "weighing + long-distance feeding" mode to "feeding weighing + feeding weighing + ultra-short-distance feeding." Based on high-temperature thermal activation, the SBS modifier is mixed with the base asphalt in a "bullet-in" cross-shear mode, building a spatial adhesion and network structure to form high-performance SBS modified asphalt and homogenized SBS modified asphalt mixtures.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] Intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder, a base asphalt injection device, a feeding channel, a pneumatic conveyor, a feeding silo, a loading silo, a screw conveyor, and a storage tank.

[0009] The bottom of the screw feeder is located in the storage container, and the top discharge port of the screw feeder is connected to the inlet port at the top of the feeding hopper;

[0010] The discharge port at the bottom of the feeding hopper is connected to the inlet at the top of the feeding hopper;

[0011] The discharge port at the bottom of the feeding hopper is connected to the inlet at the top of the feeding channel;

[0012] One end of the feeding channel is connected to the pneumatic conveyor, and the other end is connected to the middle of the mixing cylinder;

[0013] Multiple base asphalt injection devices are evenly distributed on the top of the mixing tank;

[0014] The mixing cylinder is equipped with a stirring device fixed at the bottom, and the mixing cylinder can be heated at high temperature.

[0015] A secondary weighing device is installed at the top of the feeding hopper;

[0016] A feeding hopper valve is located in the middle of the feeding hopper;

[0017] A feeding hopper valve is installed at the discharge port of the feeding hopper;

[0018] The upper part of the feeding hopper is equipped with a primary weighing device;

[0019] The screw feeder is used to feed SBS modifier stored in the storage tank to the feeding hopper;

[0020] The initial weighing device is used to weigh the SBS modifier in the feeding hopper;

[0021] The secondary weighing device is used to weigh the SBS modifier in the feeding hopper;

[0022] The base asphalt filling device is used to add base asphalt;

[0023] The pneumatic conveyor is used to pneumatically convey the SBS modifier entering the feeding channel to the mixing tank to mix with the base asphalt to form SBS modified asphalt.

[0024] The mixing device is used to mix SBS modified asphalt and aggregate to form SBS modified asphalt mixture.

[0025] Furthermore, preferably, the discharge port at the bottom of the feeding hopper and the inlet at the top of the feeding channel are detachably connected.

[0026] Furthermore, preferably, the screw feeder uses a mechanical screw to transport the SBS modifier in the storage tank to the feeding hopper.

[0027] Furthermore, preferably, the lower hopper wall of the feeding hopper is inclined inward.

[0028] Furthermore, preferably, it also includes an intelligent control cabinet;

[0029] The intelligent control cabinet includes a feeding quality regulator, a feeding controller, a feeding controller, a pneumatic conveyor controller, and a matrix asphalt controller;

[0030] The feed quality controller is used to set the amount of SBS modifier;

[0031] The feeding controller is connected to the feeding quality regulator, the screw feeder, and the primary weighing device. It is used to control the feeding of the screw feeder into the feeding hopper. The primary weighing device monitors the weighing results in real time. When the weight of SBS modifier in the feeding hopper reaches the dosage value set by the feeding quality regulator, it controls the screw feeder to stop feeding.

[0032] The feeding controller is connected to the feeding quality regulator, the feeding hopper valve, and the secondary weighing device. It is used to control the opening of the feeding hopper valve and monitor the weighing results in real time through the secondary weighing device. When the weight of SBS modifier in the feeding hopper reaches the dosage value set by the feeding quality regulator, it controls the feeding hopper valve to close.

[0033] The pneumatic conveyor controller is connected to both the pneumatic conveyor and the feed hopper valve. It controls the opening of the feed hopper valve to deliver the SBS modifier from the feed hopper into the feed channel. Under the power of the pneumatic conveyor, the SBS modifier in the feed channel is delivered into the mixing tank, where it is cross-mixed with the base asphalt. The SBS modifier enters the mixing tank at a certain rate and forms a shearing action with the base asphalt. Once all the SBS modifier in the feed hopper has been delivered into the feed channel, the feed hopper valve is closed.

[0034] The base asphalt controller is connected to the base asphalt filling device and is used to control the base asphalt filling rate and filling time of the base asphalt filling device.

[0035] Furthermore, preferably, it also includes a start / stop button, which is connected to the feeding quality controller, feeding controller, conveyor controller, and matrix asphalt controller respectively, and is used to control the power supply of the feeding quality controller, feeding controller, conveyor controller, and matrix asphalt controller.

[0036] Furthermore, preferably, the device also includes start / stop buttons that are connected to the screw conveyor, primary weighing device, feeding hopper valve, secondary weighing device, pneumatic conveyor, feeding hopper valve, matrix asphalt injection device, and mixing device, respectively, for controlling the power supply to the screw conveyor, primary weighing device, feeding hopper valve, secondary weighing device, pneumatic conveyor, feeding hopper valve, matrix asphalt injection device, and mixing device.

[0037] Furthermore, preferably, it also includes an emergency stop button, which is connected to the screw feeder, the primary weighing device, the feeding hopper valve, the secondary weighing device, the pneumatic conveyor, the feeding hopper valve, the matrix asphalt injection device, and the mixing device, respectively, and is used to control the shutdown of the screw feeder, the primary weighing device, the feeding hopper valve, the secondary weighing device, the pneumatic conveyor, the feeding hopper valve, the matrix asphalt injection device, and the mixing device.

[0038] Furthermore, preferably, it also includes an intelligent touch screen connected to the feed quality controller, feed controller, delivery controller, pneumatic conveyor controller, and base asphalt controller, for controlling the start and stop of the feed controller, delivery controller, pneumatic conveyor controller, and base asphalt controller; and for controlling the feed quality controller's setting of the SBS modifier dosage.

[0039] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing method, using the aforementioned intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment, includes the following steps:

[0040] Step (1): The SBS modifier in the storage tank is fed into the feeding hopper by the screw feeder. The weighing result in the feeding hopper is monitored in real time by the initial weighing device. When the weight of the SBS modifier in the feeding hopper reaches the set dosage value, the screw feeder stops feeding.

[0041] Step (2): Open the feed hopper valve and monitor the weighing results in the feed hopper in real time through the secondary weighing device. When the weight of SBS modifier in the feed hopper reaches the set dosage value, close the feed hopper valve.

[0042] Step (3): Open the valve of the feeding hopper to allow the SBS modifier in the feeding hopper to be fed into the feeding channel. At the same time, start the base asphalt injection device and the mixing device. Under the power of the pneumatic conveyor, the SBS modifier that has entered the feeding channel is fed into the mixing cylinder that has been preheated to 170℃~180℃, where it is cross-mixed with the base asphalt. The SBS modifier enters the mixing cylinder at a certain rate and forms a cross-shearing action with the base asphalt. Then the mixing device mixes and stirs the SBS modified asphalt and the aggregate to form an SBS modified asphalt mixture.

[0043] After all the SBS modifier in the feeding hopper has been fed into the feeding channel, the feeding hopper valve is closed.

[0044] In this invention, SBS modified asphalt refers to a material formed by mixing SBS modifier and base asphalt. SBS modified asphalt mixture refers to a material composed of three or more materials: SBS modifier, base asphalt, and aggregate.

[0045] In this invention, the mixing device mainly functions to mix the SBS modified asphalt formed by mixing the SBS modifier and the base asphalt with the aggregate to form an SBS modified asphalt mixture. It also grinds, intercalates, and disperses the base asphalt and the SBS modifier, making the SBS modifier and the base asphalt more uniformly mixed and the SBS modification effect better.

[0046] To address the engineering challenges in the preparation of SBS modified asphalt, such as segregation and variation of SBS modifiers, high-temperature decomposition, high energy consumption, high carbon emissions, high investment, and difficulties in dosage monitoring, and to effectively improve the performance of SBS modified asphalt, a novel intelligent, low-carbon, thermally activated, direct-injection SBS modified asphalt mixture processing equipment and method has been proposed. This innovative approach first solves the problem of SBS modifier segregation and variation in asphalt during storage and transportation, avoiding high-temperature decomposition and performance degradation of SBS modifiers during factory premixing, high-temperature transportation, and secondary heating. Furthermore, it reduces carbon emissions, highlighting low-carbon and environmental protection requirements, saving initial investment, and demonstrating significant socio-economic benefits.

[0047] Secondly, an innovative dual-weighing technology is proposed for precise control of both loading and feeding weighing. This involves lifting a pre-set mass of SBS modifier to the mixing tank during loading, thus controlling the SBS modifier dosage from the preparation stage. A screw feeder is used to lift the SBS modifier during preparation, shortening the feeding distance between the SBS modifier and the mixing tank, reducing pipe wall adhesion, and minimizing feeding errors. Simultaneously, a re-weighing system is used during feeding to reconfirm the mass of the SBS modifier before activating the pneumatic conveying system, avoiding SBS modifier dosage errors. This dual-weighing technology transforms the original "weighing + long-distance feeding" model into a "loading weighing + feeding weighing + ultra-short-distance feeding" model, avoiding the engineering challenges of controlling and monitoring SBS modifier dosage and large feeding errors.

[0048] Furthermore, this invention innovatively proposes a three-dimensional thermally activated mixing modification technology, which involves directly mixing SBS modifier and base asphalt in a mixing tank. Utilizing the high temperature conditions (170-180℃) of the mixing tank, a spatiotemporal cross-linking method involving time superposition and spatial intersection, and a three-dimensional mixing technology, the base asphalt and SBS modifier are fed simultaneously, allowing the SBS modifier to be cross-mixed with the base asphalt, establishing a spatial adhesion and network structure. Then, through stirring, grinding, and dispersing with aggregates, a homogenized SBS modified asphalt mixture is formed.

[0049] Therefore, this invention addresses the difficulties and pain points in the transportation industry by using an innovative thinking approach to solve the engineering and technical problems in the preparation process of SBS modified asphalt materials. It provides a new development model and method for improving the performance of SBS modified asphalt materials, effectively supporting the needs of my country's rapid transportation development and overcoming the technical defects and regulatory challenges of SBS modified asphalt.

[0050] Compared with the prior art, the beneficial effects of this invention are as follows:

[0051] First, this invention is the first in China and abroad to propose a spatial three-dimensional thermally activated mixing technology for processing SBS modified asphalt mixtures. This technology utilizes a spatial three-dimensional model and a spatiotemporal cross-linking method involving time superposition and spatial intersection. The base asphalt and SBS modifier are simultaneously fed into the mixing tank, causing the base asphalt to form a targeted carrier from top to bottom. The SBS modifier is then injected into the base asphalt targeted carrier via a strong airflow in a "bullet-like" cross-shear pattern. Furthermore, the high temperature conditions in the mixing tank of the on-site mixing plant directly utilize thermal activation to form an effective spatial bond and network structure, achieving a spatial three-dimensional structural mixing of the SBS modifier and base asphalt. Then, under the stirring action of the aggregate, effective interlocking, grinding, and dispersion occur, thereby achieving the homogeneity of the SBS modified asphalt and ensuring and improving the performance of the SBS modified asphalt mixture.

[0052] Secondly, this invention employs a dual-weighing precision control system for loading and feeding. During loading, the pre-set mass of SBS modifier is lifted to the side of the mixing cylinder, meaning the SBS modifier dosage is controlled from the material preparation process. A screw feeder is used to lift and prepare the SBS modifier, shortening the feeding distance between the SBS modifier and the mixing cylinder, reducing pipe wall adhesion, and minimizing feeding errors. Simultaneously, during feeding, a re-weighing technique is used to reconfirm the mass of the SBS modifier weighed during loading before activating the pneumatic conveying system for feeding, thus avoiding SBS modifier dosage errors. This dual-weighing technology changes the original "weighing + long-distance feeding" model to "loading weighing + feeding weighing + ultra-short-distance feeding," avoiding the engineering challenges of controlling and monitoring SBS modifier dosage and large feeding errors. It achieves the technical goal of intelligent control and digital display throughout the entire SBS modifier addition process, ensuring the designed SBS modifier dosage and the performance of the SBS-modified asphalt mixture.

[0053] Third, this invention employs a direct application and modification method for preparing SBS-modified asphalt mixtures, reducing the significant upfront investment in wet mixing at the factory, the energy-intensive heating and mixing processes, and the need to add complex stabilizers such as initiators, activators, and crosslinking agents to ensure the stability of the SBS modifier and base asphalt during later storage and transportation. This saves costs, reduces energy consumption, and embodies low-carbon and environmentally friendly principles and measures. Furthermore, this invention avoids high-temperature heating during transportation and on-site secondary heating, effectively preventing the thermal decomposition and performance degradation of the SBS modifier, a common engineering problem.

[0054] Fourth, this invention increases the melting speed of SBS modifier and base asphalt by nearly 100 times (currently, the melting speed is generally described in terms of the time required for SBS modifier and base asphalt modification; typically, wet modification methods require 2 hours or more, while this invention requires only about two minutes, thus significantly increasing the melting speed). Under the three-dimensional thermal excitation effect in the mixing tank, the initial homogeneous mixing of SBS modifier and base asphalt is achieved within 10-20 seconds, realizing the dual function of preparing and applying SBS modified asphalt materials during the mixing process, reducing operational steps and simplifying the process.

[0055] Fifth, this invention reduces unnecessary high-temperature heating during mixing, heating during transportation, secondary heating, and the addition of stabilizer components, thus avoiding long-term storage and long-distance transportation of SBS modified asphalt. It also prevents the SBS modifier from agglomerating into large particles and precipitating from the asphalt, and from degrading due to repeated heating. This solves the two core technical problems of segregation and degradation in SBS modified asphalt, effectively improving the performance of SBS modified asphalt by approximately 30%, achieving energy savings and emission reductions of approximately 90% (compared to the wet modification stage), and ensuring 100% control by on-site users.

[0056] This invention fundamentally solves the technical problem of thermodynamic instability in SBS modified asphalt, maximizes the modification effect of SBS modifier, improves the performance of SBS modified asphalt and SBS modified asphalt mixtures, and provides high-quality material preparation technology for highway pavement construction, especially expressway pavement construction in my country. It strongly supports the rapid development of transportation in my country, with outstanding social, economic and environmental benefits, and has high application value. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment of the present invention;

[0058] Figure 2 This is a schematic diagram of the spatial thermally activated mixing process of the SBS modifier and the base asphalt of this invention;

[0059] Figure 3 This is a schematic diagram of the SBS-modified bitumen material of the present invention;

[0060] Figure 4 This is a schematic diagram of the intelligent control cabinet of the present invention;

[0061] The components include: 1. Mixing cylinder; 2. Base asphalt injection device; 3. Base asphalt; 4. SBS modifier; 5. SBS modified asphalt; 6. Mixing device; 7. Aggregate; 8. Feeding channel; 9. Pneumatic conveyor; 10. Feeding hopper; 11. Feeding hopper valve; 12. Secondary weighing device; 13. Loading hopper valve; 14. Primary weighing device; 15. Loading hopper; 16. Screw feeder; 17. Storage container; 18. Intelligent control cabinet; 19. Emergency stop button; 20. Intelligent touch screen display; 21. Start / stop button; 22. Feeding quality controller; 23. Feeding controller; 24. Feeding controller; 25. Pneumatic conveyor controller; 26. Base asphalt controller. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to the embodiments.

[0063] Those skilled in the art will understand that the following embodiments are for illustrative purposes only and should not be construed as limiting the scope of the invention. Where specific techniques or conditions are not specified in the embodiments, they are performed in accordance with the techniques or conditions described in the literature in the field or according to the product instructions. Materials or equipment whose manufacturers are not specified are all conventional products that can be obtained by purchase. Example 1

[0064] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder 1, a base asphalt injection device 2, a feeding channel 8, a pneumatic conveyor 9, a feeding hopper 10, a loading hopper 15, a screw feeder 16, and a storage device 17.

[0065] The bottom of the screw feeder 16 is located in the storage tank 17, and the top outlet of the screw feeder 16 is connected to the inlet of the top of the feeding bin 15.

[0066] The discharge port at the bottom of the feeding hopper 15 is connected to the inlet at the top of the feeding hopper 10;

[0067] The discharge port at the bottom of the feeding hopper 10 is connected to the inlet at the top of the feeding channel 8;

[0068] One end of the feeding channel 8 is connected to the pneumatic conveyor 9, and the other end is connected to the middle of the mixing cylinder 1;

[0069] Multiple base asphalt injection devices 2 are evenly distributed on the top of the mixing tank 1;

[0070] A stirring device 6 is fixed at the bottom of the mixing cylinder 1, and the mixing cylinder 1 can be heated at high temperature;

[0071] A secondary weighing device 12 is provided on the upper part of the feeding hopper 10;

[0072] A feeding hopper valve 11 is provided in the middle of the feeding hopper 10;

[0073] A feeding hopper valve 13 is provided at the discharge port of the feeding hopper 15;

[0074] The upper part of the feeding hopper 15 is equipped with a primary weighing device 14;

[0075] The screw feeder 16 is used to feed the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15;

[0076] The initial weighing device 14 is used to weigh the SBS modifier 4 in the feeding hopper 15;

[0077] The secondary weighing device 12 is used to weigh the SBS modifier 4 in the feeding bin 10;

[0078] The base asphalt filling device 2 is used to add base asphalt 3;

[0079] The pneumatic conveyor 9 is used to pneumatically convey the SBS modifier 4 into the feeding channel 8 to the mixing tank 1 to mix with the base asphalt 3 to form SBS modified asphalt 5.

[0080] The mixing device 6 is used to mix and stir the SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture. Example 2

[0081] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder 1, a base asphalt injection device 2, a feeding channel 8, a pneumatic conveyor 9, a feeding hopper 10, a loading hopper 15, a screw feeder 16, and a storage device 17.

[0082] The bottom of the screw feeder 16 is located in the storage tank 17, and the top outlet of the screw feeder 16 is connected to the inlet of the top of the feeding bin 15.

[0083] The discharge port at the bottom of the feeding hopper 15 is connected to the inlet at the top of the feeding hopper 10;

[0084] The discharge port at the bottom of the feeding hopper 10 is connected to the inlet at the top of the feeding channel 8;

[0085] One end of the feeding channel 8 is connected to the pneumatic conveyor 9, and the other end is connected to the middle of the mixing cylinder 1;

[0086] Multiple base asphalt injection devices 2 are evenly distributed on the top of the mixing tank 1;

[0087] A stirring device 6 is fixed at the bottom of the mixing cylinder 1, and the mixing cylinder 1 can be heated at high temperature;

[0088] A secondary weighing device 12 is provided on the upper part of the feeding hopper 10;

[0089] A feeding hopper valve 11 is provided in the middle of the feeding hopper 10;

[0090] A feeding hopper valve 13 is provided at the discharge port of the feeding hopper 15;

[0091] The upper part of the feeding hopper 15 is equipped with a primary weighing device 14;

[0092] The screw feeder 16 is used to feed the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15;

[0093] The initial weighing device 14 is used to weigh the SBS modifier 4 in the feeding hopper 15;

[0094] The secondary weighing device 12 is used to weigh the SBS modifier 4 in the feeding bin 10;

[0095] The base asphalt filling device 2 is used to add base asphalt 3;

[0096] The pneumatic conveyor 9 is used to pneumatically convey the SBS modifier 4 into the feeding channel 8 to the mixing tank 1 to mix with the base asphalt 3 to form SBS modified asphalt 5.

[0097] The mixing device 6 is used to mix and stir the SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture.

[0098] The discharge port at the bottom of the feeding hopper 10 and the inlet at the top of the feeding channel 8 are detachably connected.

[0099] The screw feeder 16 uses a mechanical screw to transport the SBS modifier 4 in the storage tank 17 to the feeding hopper 15.

[0100] The lower hopper wall of the feeding hopper 10 is inclined inward. Example 3

[0101] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder 1, a base asphalt injection device 2, a feeding channel 8, a pneumatic conveyor 9, a feeding hopper 10, a loading hopper 15, a screw feeder 16, and a storage device 17.

[0102] The bottom of the screw feeder 16 is located in the storage tank 17, and the top outlet of the screw feeder 16 is connected to the inlet of the top of the feeding bin 15.

[0103] The discharge port at the bottom of the feeding hopper 15 is connected to the inlet at the top of the feeding hopper 10;

[0104] The discharge port at the bottom of the feeding hopper 10 is connected to the inlet at the top of the feeding channel 8;

[0105] One end of the feeding channel 8 is connected to the pneumatic conveyor 9, and the other end is connected to the middle of the mixing cylinder 1;

[0106] Multiple base asphalt injection devices 2 are evenly distributed on the top of the mixing tank 1;

[0107] A stirring device 6 is fixed at the bottom of the mixing cylinder 1, and the mixing cylinder 1 can be heated at high temperature;

[0108] A secondary weighing device 12 is provided on the upper part of the feeding hopper 10;

[0109] A feeding hopper valve 11 is provided in the middle of the feeding hopper 10;

[0110] A feeding hopper valve 13 is provided at the discharge port of the feeding hopper 15;

[0111] The upper part of the feeding hopper 15 is equipped with a primary weighing device 14;

[0112] The screw feeder 16 is used to feed the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15;

[0113] The initial weighing device 14 is used to weigh the SBS modifier 4 in the feeding hopper 15;

[0114] The secondary weighing device 12 is used to weigh the SBS modifier 4 in the feeding bin 10;

[0115] The base asphalt filling device 2 is used to add base asphalt 3;

[0116] The pneumatic conveyor 9 is used to pneumatically convey the SBS modifier 4 into the feeding channel 8 to the mixing tank 1 to mix with the base asphalt 3 to form SBS modified asphalt 5.

[0117] The mixing device 6 is used to mix and stir the SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture.

[0118] The discharge port at the bottom of the feeding hopper 10 and the inlet at the top of the feeding channel 8 are detachably connected.

[0119] The screw feeder 16 uses a mechanical screw to transport the SBS modifier 4 in the storage tank 17 to the feeding hopper 15.

[0120] The lower hopper wall of the feeding hopper 10 is inclined inward.

[0121] It also includes an intelligent control cabinet 18;

[0122] The intelligent control cabinet 18 includes a feeding quality regulator 22, a feeding controller 23, a feeding controller 24, a pneumatic conveyor controller 25, and a matrix asphalt controller 26;

[0123] The feed quality controller 22 is used to set the amount of SBS modifier 4;

[0124] The feeding controller 23 is connected to the feeding quality regulator 22, the screw feeder 16, and the initial weighing device 14 respectively. It is used to control the feeding of the screw feeder 16 into the feeding bin 15. The initial weighing device 14 monitors the weighing results in real time. When the weight of SBS modifier 4 in the feeding bin 15 reaches the dosage value set by the feeding quality regulator 22, the screw feeder 16 is controlled to stop feeding.

[0125] The feeding controller 24 is connected to the feeding quality controller 22, the feeding hopper valve 13, and the secondary weighing device 12 respectively. It is used to control the opening of the feeding hopper valve 13 and monitor the weighing results in real time through the secondary weighing device 12. When the weight of SBS modifier 4 in the feeding hopper 10 reaches the dosage value set by the feeding quality controller 22, it controls the feeding hopper valve 13 to close.

[0126] The pneumatic conveyor controller 25 is connected to the pneumatic conveyor 9 and the feeding hopper valve 11. It is used to control the opening of the feeding hopper valve 11 to feed the SBS modifier 4 in the feeding hopper 10 into the feeding channel 8. Under the power of the pneumatic conveyor 9, the SBS modifier 4 entering the feeding channel 8 is fed into the mixing cylinder 1, where it is cross-mixed with the base asphalt 3. The SBS modifier 4 enters the mixing cylinder 1 at a certain rate and forms an interpenetrating shearing action with the base asphalt 3. After all the SBS modifier 4 in the feeding hopper 10 has been fed into the feeding channel 8, the feeding hopper valve 11 is closed.

[0127] The base asphalt controller 26 is connected to the base asphalt filling device 2 and is used to control the filling rate and filling time of the base asphalt 3 of the base asphalt filling device 2. Example 4

[0128] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder 1, a base asphalt injection device 2, a feeding channel 8, a pneumatic conveyor 9, a feeding hopper 10, a loading hopper 15, a screw feeder 16, and a storage device 17.

[0129] The bottom of the screw feeder 16 is located in the storage tank 17, and the top outlet of the screw feeder 16 is connected to the inlet of the top of the feeding bin 15.

[0130] The discharge port at the bottom of the feeding hopper 15 is connected to the inlet at the top of the feeding hopper 10;

[0131] The discharge port at the bottom of the feeding hopper 10 is connected to the inlet at the top of the feeding channel 8;

[0132] One end of the feeding channel 8 is connected to the pneumatic conveyor 9, and the other end is connected to the middle of the mixing cylinder 1;

[0133] Multiple base asphalt injection devices 2 are evenly distributed on the top of the mixing tank 1;

[0134] A stirring device 6 is fixed at the bottom of the mixing cylinder 1, and the mixing cylinder 1 can be heated at high temperature;

[0135] A secondary weighing device 12 is provided on the upper part of the feeding hopper 10;

[0136] A feeding hopper valve 11 is provided in the middle of the feeding hopper 10;

[0137] A feeding hopper valve 13 is provided at the discharge port of the feeding hopper 15;

[0138] The upper part of the feeding hopper 15 is equipped with a primary weighing device 14;

[0139] The screw feeder 16 is used to feed the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15;

[0140] The initial weighing device 14 is used to weigh the SBS modifier 4 in the feeding hopper 15;

[0141] The secondary weighing device 12 is used to weigh the SBS modifier 4 in the feeding bin 10;

[0142] The base asphalt filling device 2 is used to add base asphalt 3;

[0143] The pneumatic conveyor 9 is used to pneumatically convey the SBS modifier 4 into the feeding channel 8 to the mixing tank 1 to mix with the base asphalt 3 to form SBS modified asphalt 5.

[0144] The mixing device 6 is used to mix and stir the SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture.

[0145] It also includes an intelligent control cabinet 18;

[0146] The intelligent control cabinet 18 includes a feeding quality regulator 22, a feeding controller 23, a feeding controller 24, a pneumatic conveyor controller 25, and a matrix asphalt controller 26;

[0147] The feed quality controller 22 is used to set the amount of SBS modifier 4;

[0148] The feeding controller 23 is connected to the feeding quality regulator 22, the screw feeder 16, and the initial weighing device 14 respectively. It is used to control the feeding of the screw feeder 16 into the feeding bin 15. The initial weighing device 14 monitors the weighing results in real time. When the weight of SBS modifier 4 in the feeding bin 15 reaches the dosage value set by the feeding quality regulator 22, the screw feeder 16 is controlled to stop feeding.

[0149] The feeding controller 24 is connected to the feeding quality controller 22, the feeding hopper valve 13, and the secondary weighing device 12 respectively. It is used to control the opening of the feeding hopper valve 13 and monitor the weighing results in real time through the secondary weighing device 12. When the weight of SBS modifier 4 in the feeding hopper 10 reaches the dosage value set by the feeding quality controller 22, it controls the feeding hopper valve 13 to close.

[0150] The pneumatic conveyor controller 25 is connected to the pneumatic conveyor 9 and the feeding hopper valve 11. It is used to control the opening of the feeding hopper valve 11 to feed the SBS modifier 4 in the feeding hopper 10 into the feeding channel 8. Under the power of the pneumatic conveyor 9, the SBS modifier 4 entering the feeding channel 8 is fed into the mixing cylinder 1, where it is cross-mixed with the base asphalt 3. The SBS modifier 4 enters the mixing cylinder 1 at a certain rate and forms an interpenetrating shearing action with the base asphalt 3. After all the SBS modifier 4 in the feeding hopper 10 has been fed into the feeding channel 8, the feeding hopper valve 11 is closed.

[0151] The base asphalt controller 26 is connected to the base asphalt filling device 2 and is used to control the filling rate and filling time of the base asphalt 3 of the base asphalt filling device 2.

[0152] It also includes a start / stop button 21, which is connected to the feeding quality controller 22, the feeding controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the matrix asphalt controller 26 respectively, and is used to control the power supply of the feeding quality controller 22, the feeding controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the matrix asphalt controller 26.

[0153] It also includes a start / stop button 21, which is connected to the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6, respectively, and is used to control the power supply of the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6. Example 5

[0154] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment includes a mixing cylinder 1, a base asphalt injection device 2, a feeding channel 8, a pneumatic conveyor 9, a feeding hopper 10, a loading hopper 15, a screw feeder 16, and a storage device 17.

[0155] The bottom of the screw feeder 16 is located in the storage tank 17, and the top outlet of the screw feeder 16 is connected to the inlet of the top of the feeding bin 15.

[0156] The discharge port at the bottom of the feeding hopper 15 is connected to the inlet at the top of the feeding hopper 10;

[0157] The discharge port at the bottom of the feeding hopper 10 is connected to the inlet at the top of the feeding channel 8;

[0158] One end of the feeding channel 8 is connected to the pneumatic conveyor 9, and the other end is connected to the middle of the mixing cylinder 1;

[0159] Multiple base asphalt injection devices 2 are evenly distributed on the top of the mixing tank 1;

[0160] A stirring device 6 is fixed at the bottom of the mixing cylinder 1, and the mixing cylinder 1 can be heated at high temperature;

[0161] A secondary weighing device 12 is provided on the upper part of the feeding hopper 10;

[0162] A feeding hopper valve 11 is provided in the middle of the feeding hopper 10;

[0163] A feeding hopper valve 13 is provided at the discharge port of the feeding hopper 15;

[0164] The upper part of the feeding hopper 15 is equipped with a primary weighing device 14;

[0165] The screw feeder 16 is used to feed the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15;

[0166] The initial weighing device 14 is used to weigh the SBS modifier 4 in the feeding hopper 15;

[0167] The secondary weighing device 12 is used to weigh the SBS modifier 4 in the feeding bin 10;

[0168] The base asphalt filling device 2 is used to add base asphalt 3;

[0169] The pneumatic conveyor 9 is used to pneumatically convey the SBS modifier 4 into the feeding channel 8 to the mixing tank 1 to mix with the base asphalt 3 to form SBS modified asphalt 5.

[0170] The mixing device 6 is used to mix and stir the SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture.

[0171] The discharge port at the bottom of the feeding hopper 10 and the inlet at the top of the feeding channel 8 are detachably connected.

[0172] The screw feeder 16 uses a mechanical screw to transport the SBS modifier 4 in the storage tank 17 to the feeding hopper 15.

[0173] The lower hopper wall of the feeding hopper 10 is inclined inward.

[0174] It also includes an intelligent control cabinet 18;

[0175] The intelligent control cabinet 18 includes a feeding quality regulator 22, a feeding controller 23, a feeding controller 24, a pneumatic conveyor controller 25, and a matrix asphalt controller 26;

[0176] The feed quality controller 22 is used to set the amount of SBS modifier 4;

[0177] The feeding controller 23 is connected to the feeding quality regulator 22, the screw feeder 16, and the initial weighing device 14 respectively. It is used to control the feeding of the screw feeder 16 into the feeding bin 15. The initial weighing device 14 monitors the weighing results in real time. When the weight of SBS modifier 4 in the feeding bin 15 reaches the dosage value set by the feeding quality regulator 22, the screw feeder 16 is controlled to stop feeding.

[0178] The feeding controller 24 is connected to the feeding quality controller 22, the feeding hopper valve 13, and the secondary weighing device 12 respectively. It is used to control the opening of the feeding hopper valve 13 and monitor the weighing results in real time through the secondary weighing device 12. When the weight of SBS modifier 4 in the feeding hopper 10 reaches the dosage value set by the feeding quality controller 22, it controls the feeding hopper valve 13 to close.

[0179] The pneumatic conveyor controller 25 is connected to the pneumatic conveyor 9 and the feeding hopper valve 11. It is used to control the opening of the feeding hopper valve 11 to feed the SBS modifier 4 in the feeding hopper 10 into the feeding channel 8. Under the power of the pneumatic conveyor 9, the SBS modifier 4 entering the feeding channel 8 is fed into the mixing cylinder 1, where it is cross-mixed with the base asphalt 3. The SBS modifier 4 enters the mixing cylinder 1 at a certain rate and forms an interpenetrating shearing action with the base asphalt 3. After all the SBS modifier 4 in the feeding hopper 10 has been fed into the feeding channel 8, the feeding hopper valve 11 is closed.

[0180] The base asphalt controller 26 is connected to the base asphalt filling device 2 and is used to control the filling rate and filling time of the base asphalt 3 of the base asphalt filling device 2.

[0181] It also includes a start / stop button 21, which is connected to the feeding quality controller 22, the feeding controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the matrix asphalt controller 26 respectively, and is used to control the power supply of the feeding quality controller 22, the feeding controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the matrix asphalt controller 26.

[0182] It also includes a start / stop button 21, which is connected to the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6, respectively, and is used to control the power supply of the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6.

[0183] It also includes an emergency stop button 19, which is connected to the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6, respectively, and is used to control the stopping operation of the screw feeder 16, the primary weighing device 14, the feeding hopper valve 13, the secondary weighing device 12, the pneumatic conveyor 9, the feeding hopper valve 11, the base asphalt injection device 2, and the mixing device 6.

[0184] It also includes an intelligent touch screen 20, which is connected to the feed quality controller 22, the feed controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the base asphalt controller 26, for controlling the start and stop of the feed controller 23, the feeding controller 24, the pneumatic conveyor controller 25 and the base asphalt controller 26; and for controlling the feed quality controller 22 to set the dosage of SBS modifier 4.

[0185] The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing method, using the aforementioned intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment, includes the following steps:

[0186] Step (1): The SBS modifier 4 in the storage tank 17 is fed into the feeding hopper 15 by the screw feeder 16. The weighing result in the feeding hopper 15 is monitored in real time by the initial weighing device 14. When the weight of the SBS modifier 4 in the feeding hopper 15 reaches the set dosage value, the screw feeder 16 stops feeding.

[0187] Step (2): Open the feeding hopper valve 13 and monitor the weighing results in the feeding hopper 10 in real time through the secondary weighing device 12. When the weight of SBS modifier 4 in the feeding hopper 10 reaches the set dosage value, close the feeding hopper valve 13.

[0188] Step (3): Open the feeding hopper valve 11 to allow the SBS modifier 4 in the feeding hopper 10 to be fed into the feeding channel 8. At the same time, start the base asphalt injection device 2 and the mixing device 6. Under the power of the pneumatic conveyor 9, the SBS modifier 4 that has entered the feeding channel 8 is fed into the mixing cylinder 1 which is preheated to 170℃~180℃. It is cross-mixed with the base asphalt 3 and enters the mixing cylinder 1 at a certain rate to form a cross-shearing action with the base asphalt 3. Then the mixing device 6 mixes and stirs the SBS modified asphalt 5 and the aggregate 7 to form an SBS modified asphalt mixture.

[0189] After all the SBS modifier 4 in the feeding hopper 10 is fed into the feeding channel 8, the feeding hopper valve 11 is closed.

[0190] In this invention:

[0191] The mixing tank 1 is an important component of the asphalt mixing plant. It is used for mixing base asphalt 3, SBS modifier 4, and aggregate 7. It can control high-temperature heating (to meet the high-temperature requirement of 170-180℃) and is equipped with a mixing device 6.

[0192] The base asphalt injection device 2 is used to inject base asphalt 3 into the mixing tank 1. By controlling the injection rate and coverage area of ​​the base asphalt 3, the quality of the base asphalt 3 injection can be controlled, and an effective carrier surface for bonding with the SBS modifier 4 can be formed, so that the base asphalt 3 and the SBS modifier 4 can be fully cross-linked and bonded.

[0193] Base asphalt 3 is a base asphalt without added modifiers, used as the base asphalt for producing modified asphalt.

[0194] SBS modifier 4 is a thermoplastic elastomer, a styrene-butadiene-styrene block copolymer, used to modify base asphalt 3 to improve its performance. SBS modifier 4 has different blocks in a tandem structure, namely plastic and rubber segments, exhibiting an alloy-like microstructure. It possesses both the rigidity and plasticity of plastics and the flexibility and elasticity of rubber. Asphalt modified with SBS modifier 4 exhibits better high and low temperature performance, rutting resistance, fatigue resistance, and UV aging resistance. SBS modifier 4 has linear and star-shaped structures, and the ratio of styrene to butadiene is controllable. Its molecular weight ranges from 50,000 to 300,000. Generally, linear, short-chain, low-molecular-weight, and gel-like or powdered solid structures are selected to increase the melting rate of SBS modifier 4 with base asphalt 3. This invention achieves preliminary mixing of SBS modifier 4 and base asphalt 3 within 10-20 seconds. The SBS modifier 4 of this invention preferably uses a low molecular weight, linear, short-chain, and powdered material.

[0195] SBS modified asphalt 5 is made by adding a certain proportion of SBS modifier 4 to base asphalt 3, and then using methods such as thermal activation, pneumatic shearing, and cross-mixing to uniformly disperse the SBS modifier 4 in the base asphalt 3 to form an SBS modified asphalt blend, namely SBS modified asphalt 5.

[0196] The mixing device 6 includes a mixing shaft and mixing blades mounted on the mixing shaft. It is used to mix and stir SBS modified asphalt 5 and aggregate 7 to form an SBS modified asphalt mixture. It also further grinds, embeds, and disperses the SBS modified asphalt 5, making the SBS modified asphalt 5 more uniform. (Note: Before contacting the mixing blades of the mixing device 6, the SBS modifier 4 and the base asphalt 3 have already undergone preliminary cross-shear mixing. However, after contacting the mixing blades, they will be further mixed under the action of the mixing blades. Especially after the addition of aggregate 7, the mixing blades and aggregate 7, as hard materials, will further grind, embed, and disperse the already mixed SBS modified asphalt 5, and at the same time form a bonding effect with the aggregate 7, ultimately forming an SBS modified asphalt mixture.)

[0197] Stone material 7 is stone used for road construction. Its material is mainly basalt or limestone. Generally, the particle size of road stone is divided into grades such as 10-20mm, 5-10mm, 0-5mm and mineral powder, which are used to form different proportions.

[0198] The feeding channel 8 is used to feed the SBS modifier 4 into the mixing cylinder 1 under the action of the pneumatic conveyor 9. It has sufficient rigidity and strength, and except for the opening connecting to the mixing cylinder 1, the rest is sealed to prevent the SBS modifier 4 from leaking out under the power of the pneumatic conveyor 9. At the same time, the upper structure of the feeding channel 8 is easy to disassemble, facilitating the cleaning of any residual SBS modifier 4 inside. The feeding time of one cycle of the feeding channel 8 is controlled within 10-20 seconds.

[0199] The pneumatic conveyor 9 provides the pneumatic power to add the SBS modifier 4 to the mixing tank 1, and provides the power to cross-link and mix the SBS modifier 4 with the base asphalt 3 at a certain rate (preferably 3 m / s in engineering, but the rate can be adjusted according to the weight of the material and the pneumatic conveying distance). This forms a "bullet-like" penetrating shearing action, so that the SBS modifier 4 and the base asphalt 3 not only have a thermally activated mixing basis in the mixing tank 1, but also have a shearing cross-mixing action. In addition, the grinding, interlocking and dispersing action of the stirring device 6 makes the SBS modifier 4 and the base asphalt 3 fully mixed, and the SBS modified asphalt mixture forms a homogeneous blend.

[0200] The feeding hopper 10, connected to the feeding channel 8, is a storage device for the SBS modifier 4 entering the mixing tank 1. It stores the weighed SBS modifier 4 and performs a second weighing of the weighed SBS modifier 4 to verify its quality in the mixing tank 1 and cross-linking with the base asphalt 3. The inner wall of the feeding hopper 10 is equipped with an anti-adhesion plastic sidewall layer (preferably polypropylene (PP) material). The lower half of the hopper wall of the feeding hopper 10 is inclined at an angle (generally set to 30°; note: the upper half has no angle because only the lower half is used to store the SBS modifier 4, while the upper half is very short and mainly used for connection, not for material storage), to prevent the SBS modifier 4 from adhering to the inner wall of the hopper and ensure smooth feeding.

[0201] The feeding hopper valve 11 is used to control the material feeding operation between the feeding hopper 10 and the feeding channel 8. When the feeding hopper valve 11 is opened, the SBS modifier 4, which has been weighed and stored in the feeding hopper 10, flows into the feeding channel 8 and is added into the mixing cylinder 1 under the power of the pneumatic conveyor 9. It then cross-mixes with the base asphalt 3 at a certain rate, forming a "bullet-like effect". When the SBS modifier 4 in the feeding hopper 10 has been completely fed into the mixing cylinder 1, the feeding hopper valve 11 is closed. The feeding process time is controlled within 10-20 seconds.

[0202] The secondary weighing device 12 is part of the feeding hopper 10 and is installed on the upper part of the feeding hopper 10. It is used to weigh the SBS modifier 4 entering the feeding hopper 10 for the second time and to verify the mass of the SBS modifier 4 added to the feeding hopper 10 by the feeding hopper 15. It plays the role of secondary weighing and verification of weight, ensuring that the added SBS modifier 4 meets the set target value, and its error range is 5g±1g.

[0203] The loading hopper valve 13 controls the material feeding operation between the loading hopper 15 and the feeding hopper 10. When the loading hopper valve 13 is opened, the SBS modifier 4 stored in the loading hopper 15, which has already undergone one weighing (initial weighing), is immediately added to the feeding hopper 10 and weighed a second time by the secondary weighing device 12. When the SBS modifier 4 in the feeding hopper 10 reaches the set weight (e.g., the set weight is 5.4 kg), the loading hopper valve 13 is closed. Note: Generally, the discharge weight of an asphalt mixing plant is 3000 kg of SBS modified asphalt mixture per batch. The amount of base asphalt 3 used is generally 135 kg, while the amount of SBS modifier 4 used is generally 5.4 kg.

[0204] The initial weighing device 14 is part of the feeding hopper 15 and is located at the top of the feeding hopper 15. It is used to initially weigh the SBS modifier 4. When the weight of the SBS modifier 4 in the feeding hopper 15 reaches the target value set by the on-site mixing, the initial weighing device 14 displays the value and sends a feedback signal to the intelligent control cabinet 18 to stop the screw feeder 16 from feeding. Its error range can be set to 1g or adjusted according to the actual situation.

[0205] The feeding hopper 15, connected to the screw feeder 16, stores the SBS modifier 4 transported by the screw feeder 16 and provides initial weighing of the SBS modifier 4. When the required weight of SBS modifier 4 for a single on-site mixing is reached, a feedback signal is sent to the intelligent control cabinet 18 to stop the screw feeder 16 from feeding, ensuring accurate measurement of the SBS modifier 4 for on-site mixing. Simultaneously, the inner wall of the feeding hopper 15 is made of anti-adhesion plastic sidewall layer (preferably polypropylene (PP) material), and the hopper wall is inclined at an angle (preferably 30°) to prevent the SBS modifier 4 from adhering to the inner wall of the feeding hopper 15, ensuring smooth material discharge.

[0206] The screw feeder 16 uses a mechanical screw to transport the SBS modifier 4 from the storage container 17 to the feeding hopper 15. The inner wall of the screw feeder 16 is coated with an anti-stick coating (preferably made of polytetrafluoroethylene), avoiding the drawback of the SBS modifier 4 sticking to the inner wall during long-distance transport.

[0207] The storage container 17 is used to store SBS modifier 4, ensuring the supply of SBS modifier 4 to the screw feeder 16. It is generally installed directly on the ground for easy unloading by workers or machinery.

[0208] The intelligent control cabinet 18 is the intelligent control center of the entire SBS modified asphalt mixture processing equipment, used to control the entire processing equipment to perform intelligent operation.

[0209] Emergency stop button 19 is used to stop the processing of SBS modified asphalt mixture in an emergency, stop the operation of the equipment, and prevent accidental injury or damage to the instrument due to improper operation.

[0210] The intelligent touch screen 20 is used to intelligently control the processing of SBS modified asphalt mixture. It can be controlled by touch screen to intelligently start and stop the feeding operation, delivery operation, pneumatic conveying operation, injection operation, and mixing operation.

[0211] The start / stop button 21 is used to start and stop the processing of SBS modified asphalt mixture. When started, the processing equipment is in a powered-on standby state, and the weighing, loading, feeding, unloading, and pneumatic conveying processes can be controlled. When stopped, the entire processing equipment is powered off and shut down to prevent accidental damage caused by misoperation.

[0212] The feeding quality controller 22 is used to control the weight of SBS modifier 4. The target amount is set according to the required amount for each mixing. After the setting is completed, the screw feeder 16 transports a fixed weight of SBS modifier 4 to the feeding hopper 15 according to the set weight and performs the initial weighing. Then, it is weighed again in the feeding hopper 10 to ensure the accuracy of the amount of SBS modifier 4 used.

[0213] The feeding controller 23 is used to control the intelligent feeding operation of SBS modifier 4, directly controlling the operation and stop of the screw feeder 16, and transporting the set amount of SBS modifier 4 required for each mixing into the feeding hopper 15. The initial weighing device 14 monitors the weighing result in real time. When the weight of SBS modifier 4 in the feeding hopper 15 reaches the set target value, the feeding operation of the screw feeder 16 is stopped.

[0214] The feeding controller 24 is used to control the intelligent feeding operation of SBS modifier 4. When the feeding controller 24 is turned on, the loading hopper valve 13 is opened, and the SBS modifier 4 in the loading hopper 15 is fed into the feeding hopper 10. The weighing result is monitored in real time by the secondary weighing device 12. When the weight of SBS modifier in the feeding hopper 10 reaches the set value, the loading hopper valve 13 is closed.

[0215] The pneumatic conveyor controller 25 is used to control the intelligent operation of the pneumatic conveyor 9 in conveying SBS modifier 4. When the pneumatic conveyor controller 25 is turned on, the feeding hopper valve 11 is opened, and the SBS modifier 4 in the feeding hopper 10 is sent into the feeding channel 8. Under the continuous power of the pneumatic conveyor 9, the SBS modifier 4 entering the feeding channel 8 is sent into the mixing cylinder 1, where it is cross-mixed with the base asphalt 3 and forms a cross-shearing action at a certain rate to enhance the mixing effect of SBS modifier 4 and base asphalt 3.

[0216] The base asphalt controller 26 is used to control the intelligent operation of adding base asphalt 3 into the mixing tank 1. This operation is connected to the central control system of the asphalt mixing plant and can be directly controlled within the system. When the base asphalt controller 26 is activated, base asphalt 3 begins to be added into the mixing tank 1. The rate and time of base asphalt 3 addition are controllable. It is cross-mixed with SBS modifier 4, which is pneumatically conveyed into the mixing tank 1 at a certain speed (base asphalt 3 is generally added within 30 seconds, and the pneumatic conveying rate of SBS modifier 4 is generally controlled at 3 m / s). This creates a certain interpenetrating shearing effect, forming SBS modified asphalt 5. Utilizing the high-temperature thermal activation conditions within the mixing tank 1, and under the stirring, grinding, interlocking, and dispersing effects of the mixing device 6 and the aggregate 7, uniform SBS modified asphalt 5 is formed, which, together with the aggregate 7, forms a high-performance SBS modified asphalt mixture.

[0217] The processing method for intelligent, low-carbon, space-heat-activated direct-injection and direct-modification SBS-modified asphalt mixtures includes the following specific steps:

[0218] The first step is preparation. By turning on the start / stop button 21 through the intelligent control cabinet 18, the processing equipment is powered on. At this time, the mixing cylinder 1, as part of the entire mixing plant, is preheated to the set high temperature (generally 170~180℃). Sufficient SBS modifier 4 is added to the storage container 17 for later use. The preliminary preparation work for the preparation of SBS modified asphalt 5 material is completed.

[0219] The second step is the feeding operation. The amount of SBS modifier 4 required for on-site mixing is adjusted via the intelligent touchscreen display 20 or the feeding quality controller 22, intelligently controlling the amount of SBS modifier 4 to the designed target value. The feeding controller 23 is activated, at which point the screw feeder 16 begins operation, transporting the SBS modifier 4 stored in the storage tank 17 to the feeding hopper 15 via mechanical screw lifting. The initial weighing device 14 monitors the weight of the SBS modifier 4 transported to the feeding hopper 15 by the screw feeder 16 in real time. When the amount of SBS modifier 4 in the feeding hopper 15 reaches the set target value, the screw feeder 16 stops feeding, completing the feeding operation.

[0220] The third step is the feeding operation. The feeding controller 24 is turned on, and the loading hopper valve 13 is opened. The SBS modifier 4, which has been weighed according to the set value in the loading hopper 15, is added to the feeding hopper 10. The weight of the SBS modifier 4 added to the feeding hopper 10 is monitored in real time by the secondary weighing device 12. When the set target value is reached, the loading hopper valve 13 is closed to complete the feeding operation.

[0221] The fourth step is the preparation of SBS modified asphalt material by spatial thermal activation. Simultaneously, the pneumatic conveyor controller 25 and the base asphalt controller 26 are activated. At this time, the feeding hopper valve 11 opens, and the SBS modifier 4, which has been weighed and verified twice according to the set values, flows from the feeding hopper 10 into the feeding channel 8. Powered by the pneumatic conveyor 9, the SBS modifier 4 is fed into the mixing cylinder 1. Simultaneously, the base asphalt 3 is added into the mixing cylinder 1 through the base asphalt injection device 2. Under the high temperature conditions of the mixing cylinder 1, it undergoes spatial three-dimensional cross-mixing with the SBS modifier 4. At the same time, both the SBS modifier 4 and the base asphalt 3 experience a certain rate of interpenetrating shearing action. The SBS modifier 4 mixes with the base asphalt 3 in a "bullet-penetration" cross-shearing manner, forming a preliminary homogeneous SBS modified asphalt 5. They then enter the working area of ​​the mixing device 6 together. Under the combined action of the mixing device 6 and the aggregate 7, further effective mixing, grinding, embedding and dispersing effects are formed, so that the SBS modified asphalt 5 is further mixed evenly, and finally a high-performance SBS modified asphalt mixture is formed, completing the processing of space thermally activated SBS modified asphalt mixture.

[0222] After the processing of SBS modified asphalt mixture is completed, turn off the start / stop button 21 to stop the processing, put the equipment in a stopped state, and turn off the power. In case of emergency during the processing of SBS modified asphalt mixture, press the emergency stop button 19 to stop the processing of SBS modified asphalt mixture and stop the operation of all related equipment.

[0223] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. Intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment, characterized in that, It includes a mixing tank (1), a base asphalt injection device (2), a feeding channel (8), a pneumatic conveyor (9), a feeding hopper (10), a loading hopper (15), a screw feeder (16), a storage container (17), and an intelligent control cabinet (18). The bottom of the screw feeder (16) is set in the storage container (17), and the top outlet of the screw feeder (16) is connected to the inlet of the top of the feeding hopper (15). The discharge port at the bottom of the feeding hopper (15) is connected to the inlet at the top of the feeding hopper (10); The discharge port at the bottom of the feeding bin (10) is connected to the inlet at the top of the feeding channel (8); One end of the feeding channel (8) is connected to the pneumatic conveyor (9), and the other end is connected to the middle of the mixing cylinder (1); The top of the mixing tank (1) is fixed with multiple base asphalt injection devices (2) evenly distributed; The mixing tank (1) is equipped with a stirring device (6) at the bottom, and the mixing tank (1) can be heated to 170℃~180℃; A secondary weighing device (12) is provided on the upper part of the feeding bin (10). A feeding bin valve (11) is provided in the middle of the feeding bin (10); A feeding hopper valve (13) is provided at the discharge port of the feeding hopper (15); The upper part of the feeding hopper (15) is equipped with a primary weighing device (14). The screw feeder (16) is used to feed the SBS modifier (4) stored in the storage container (17) to the feeding hopper (15). The initial weighing device (14) is used to weigh the SBS modifier (4) in the feeding hopper (15); The secondary weighing device (12) is used to weigh the SBS modifier (4) in the feeding bin (10); The base asphalt filling device (2) is used to add base asphalt (3); The pneumatic conveyor (9) is used to pneumatically convey the SBS modifier (4) entering the feeding channel (8) to the mixing tank (1) to mix with the base asphalt (3) to form SBS modified asphalt (5). The mixing device (6) is used to mix and stir SBS modified asphalt (5) and aggregate (7) to form SBS modified asphalt mixture; The intelligent control cabinet (18) includes a feeding quality regulator (22), a feeding controller (23), a feeding controller (24), a pneumatic conveyor controller (25), and a matrix asphalt controller (26). The feed quality controller (22) is used to set the amount of SBS modifier (4); The feeding controller (23) is connected to the feeding quality regulator (22), the screw feeder (16), and the initial weighing device (14) respectively. It is used to control the feeding of the screw feeder (16) into the feeding bin (15). The initial weighing device (14) monitors the weighing results in real time. When the weight of the SBS modifier (4) in the feeding bin (15) reaches the dosage value set by the feeding quality regulator (22), the screw feeder (16) is controlled to stop feeding. The feeding controller (24) is connected to the feeding quality regulator (22), the feeding hopper valve (13), and the secondary weighing device (12) respectively. It is used to control the opening of the feeding hopper valve (13) and monitor the weighing results in real time through the secondary weighing device (12). When the weight of SBS modifier (4) in the feeding hopper (10) reaches the dosage value set by the feeding quality regulator (22), the feeding hopper valve (13) is controlled to close. The pneumatic conveyor controller (25) is connected to the pneumatic conveyor (9) and the feeding hopper valve (11) respectively. It is used to control the opening of the feeding hopper valve (11) to send the SBS modifier (4) in the feeding hopper (10) into the feeding channel (8). Under the power of the pneumatic conveyor (9), the SBS modifier (4) in the feeding channel (8) is sent into the mixing cylinder (1) to be cross-mixed with the base asphalt (3). The SBS modifier (4) enters the mixing cylinder (1) at a certain rate and forms a cross-shearing action with the base asphalt (3). When all the SBS modifier (4) in the feeding hopper (10) has been sent into the feeding channel (8), the feeding hopper valve (11) is controlled to close. The base asphalt controller (26) is connected to the base asphalt filling device (2) and is used to control the base asphalt (3) filling rate and filling time of the base asphalt filling device (2).

2. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, The discharge port at the bottom of the feeding hopper (10) and the inlet at the top of the feeding channel (8) are detachably connected.

3. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, The screw feeder (16) uses a mechanical screw to transport the SBS modifier (4) in the storage container (17) to the feeding hopper (15).

4. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, The lower hopper wall of the feeding hopper (10) is inclined inward.

5. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, It also includes a start / stop button (21), which is connected to the feeding quality controller (22), the feeding controller (23), the feeding controller (24), the pneumatic conveyor controller (25), and the matrix asphalt controller (26) respectively, and is used to control the power supply of the feeding quality controller (22), the feeding controller (23), the feeding controller (24), the pneumatic conveyor controller (25), and the matrix asphalt controller (26).

6. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 5, characterized in that, The start / stop button (21) is also connected to the screw feeder (16), the primary weighing device (14), the feeding hopper valve (13), the secondary weighing device (12), the pneumatic conveyor (9), the feeding hopper valve (11), the matrix asphalt injection device (2), and the mixing device (6), respectively, and is used to control the power supply of the screw feeder (16), the primary weighing device (14), the feeding hopper valve (13), the secondary weighing device (12), the pneumatic conveyor (9), the feeding hopper valve (11), the matrix asphalt injection device (2), and the mixing device (6).

7. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, It also includes an emergency stop button (19), which is connected to the screw feeder (16), the primary weighing device (14), the feeding hopper valve (13), the secondary weighing device (12), the pneumatic conveyor (9), the feeding hopper valve (11), the base asphalt injection device (2), and the mixing device (6) respectively, and is used to control the stop operation of the screw feeder (16), the primary weighing device (14), the feeding hopper valve (13), the secondary weighing device (12), the pneumatic conveyor (9), the feeding hopper valve (11), the base asphalt injection device (2), and the mixing device (6).

8. The intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment according to claim 1, characterized in that, It also includes an intelligent touch screen (20), which is connected to the feed quality controller (22), the feed controller (23), the feeder controller (24), the pneumatic conveyor controller (25), and the base asphalt controller (26), and is used to control the start and stop of the feed controller (23), the feeder controller (24), the pneumatic conveyor controller (25), and the base asphalt controller (26); it is also used to control the feed quality controller (22) to set the dosage of SBS modifier (4).

9. A method for processing intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixtures, using the intelligent low-carbon thermally activated direct-injection SBS modified asphalt mixture processing equipment as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: The SBS modifier (4) in the storage container (17) is fed into the feeding hopper (15) by the screw feeder (16). The weighing result in the feeding hopper (15) is monitored in real time by the initial weighing device (14). When the weight of the SBS modifier (4) in the feeding hopper (15) reaches the set dosage value, the screw feeder (16) stops feeding. Step 2: Open the feeding hopper valve (13) and monitor the weighing results in the feeding hopper (10) in real time through the secondary weighing device (12). When the weight of SBS modifier (4) in the feeding hopper (10) reaches the set dosage value, close the feeding hopper valve (13). Step 3: Open the feed hopper valve (11) to allow the SBS modifier (4) in the feed hopper (10) to be fed into the feed channel (8). At the same time, start the base asphalt injection device (2) and the mixing device (6). Under the power of the pneumatic conveyor (9), the SBS modifier (4) that has entered the feed channel (8) is fed into the mixing cylinder (1) which is preheated to 170℃~180℃. It is cross-mixed with the base asphalt (3) and enters the mixing cylinder (1) at a certain rate to form a cross-shearing action with the base asphalt (3). Then the mixing device (6) mixes and stirs the SBS modified asphalt (5) and the aggregate (7) to form an SBS modified asphalt mixture. After all the SBS modifier (4) in the feeding bin (10) is fed into the feeding channel (8), the feeding bin valve (11) is closed.

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