C-type forced intermittent asphalt mixture primary and secondary integrated machine

The C-type forced intermittent asphalt mixture virgin recycling integrated machine, utilizing multiple material grading machines and an intelligent control system, solves the problem of inaccurate material measurement during asphalt concrete recycling, achieving efficient production and stable quality of the mixture, and reducing costs.

CN117947674BActive Publication Date: 2026-04-14CA LONG ENG MACHINERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-01-26
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

In the existing technology, the material measurement in the asphalt concrete recycling process is inaccurate, resulting in unstable mixture quality, high production costs, and large consumption of resources and energy.

Method used

The C-type forced intermittent asphalt mixture virgin recycling integrated machine, through multiple material grading machines, a main conveyor belt, a homogenizer, a mixing drying and heating treatment device, a metering device, and a finished product storage silo, combined with a computer intelligent control system, achieves precise proportioning and heating treatment of raw materials, ensuring stable mixture quality.

Benefits of technology

It enables accurate metering and uniform mixing of asphalt mixtures, reduces production costs, improves the quality stability and production efficiency of the mixtures, and reduces resource and energy consumption.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application relates to the field of building material production devices, in particular to a C-type forced intermittent asphalt mixture primary regeneration all-in-one machine, which comprises multiple material grading machines, multiple material grading machines are respectively used for accurately dosing different raw materials; a total conveying belt conveyor; a homogenizing mixer for mixing multiple raw materials, a mixed material drying and heating treatment device for heating the mixed multiple different raw materials, a mixed material hot stock bin for temporarily storing the heated mixed material, a metering device, a stirring system below the metering device, and a finished product storage bin for storing finished products; the material grading machine comprises a belt scale, a position sensor, a metering sensor and a rotating speed sensor, and the raw materials are accurately weighed by the belt scale, the position sensor, the metering sensor and the rotating speed sensor and then conveyed to the homogenizing mixer. The application has the effects that the primary and regeneration processes of the asphalt mixture are more convenient, and the production cost is reduced.
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Description

Technical Field

[0001] This application relates to the field of building material production equipment, and in particular to a C-type forced intermittent asphalt mixture virgin recycling machine. Background Technology

[0002] Against the backdrop of national environmental governance, highway construction and maintenance generate a large amount of waste asphalt concrete that needs to be disposed of, consuming significant resources and energy. As my country's highway mileage increases, this amount will continue to grow. To save construction costs, conserve energy, and protect the environment, asphalt concrete waste is typically recycled and reused. Asphalt concrete pavement recycling technology is one such method. This approach involves excavating, recycling, crushing, and screening old or abandoned asphalt concrete pavement, then adding appropriate amounts of new aggregate and asphalt to remix it into a recycled asphalt mixture with good road performance. This complete process can save substantial amounts of asphalt and aggregate materials, reducing project investment.

[0003] There are generally four methods for reusing asphalt concrete: plant-heated recycling, in-situ hot recycling, plant-heated cold recycling, and in-situ cold recycling. In-situ hot and cold recycling involve processing directly on the asphalt pavement using appropriate equipment, while plant-heated and plant-heated recycling require the asphalt mixture to be recycled to a plant for further processing. Both virgin and recycled asphalt concrete require precise metering and proportioning of each material. The process typically involves using two drying drums to heat and mix the virgin and recycled materials separately. During production, each material must be individually metered before mixing; inaccurate metering will result in inconsistent asphalt concrete quality. Current technologies for controlling the dosage of each material during production also have relatively low precision. Summary of the Invention

[0004] To make the primary and recycling processes of asphalt mixtures more convenient and reduce production costs, this application provides a C-type forced intermittent asphalt mixture primary recycling integrated machine.

[0005] The C-type forced intermittent asphalt mixture virgin recycling integrated machine provided in this application adopts the following technical solution:

[0006] The C-type forced intermittent asphalt mixture virgin recycling integrated machine includes: multiple material grading machines, each used for precise batching of different raw materials; a main conveyor belt conveyor; a homogenizing mixer for premixing multiple different raw materials; a mixing drying and heating treatment device for heating the premixed multiple different raw materials; a mixing hot silo for temporarily storing the heated mixture; a metering device for metering the heated aggregate and other materials; a mixing system located below the metering device; and a finished product storage silo for storing the finished product.

[0007] The material grading machine includes a belt scale, a position sensor, a metering sensor, and a speed sensor. The raw materials are accurately measured and proportioned by the belt scale, position sensor, metering sensor, and speed sensor before being transported to the homogenizing mixer.

[0008] In one embodiment, the material grading machine further includes a batching bin and a conveying end. The batching bin includes a metering bin, which includes a metering sensor. After passing through the metering bin, the raw material is conveyed from the batching bin to the conveying end. The conveying end includes a belt scale, a position sensor, and a speed sensor. The belt scale, speed sensor, and position sensor can adjust the conveying speed and the material drop point of the conveying end.

[0009] In one embodiment, the system further includes a homogenizing mixer for pre-mixing the batched raw materials, a main conveyor belt connecting the material grading machine and the homogenizing mixer for transporting the raw materials, and a mixing conveyor connected to the homogenizing mixer for conveying the mixture to a mixing drying and heating treatment device.

[0010] In one embodiment, the mixing, drying, and heating treatment device includes a drying cylinder and a mixing hot material bin; the drying cylinder is a co-current heating or counter-current heating drying cylinder.

[0011] In one embodiment, the drying cylinder is a co-current heating drying cylinder, which includes a burner, a feed end cap, a cylinder body, a W-shaped guide plate, a bridge-type anti-segregation device, a discharge end cap, a dust removal system and pipes, a frame, a transmission device, and a heating and insulation device.

[0012] The raw material is fed into the drying cylinder through the feed end cap. Due to the rotation and tilt of the drying cylinder, the raw material moves towards the lower end. The guide plate is used to spread the raw material to form a uniform material curtain. The burner is used to provide hot air to the spread material curtain. The bridge-type anti-segregation device is used to prevent the separation of large-diameter raw materials from small-diameter raw materials. The discharge end cap is used to discharge the heated raw material. The pipeline and dust removal system are used to collect dust and harmful fumes during the heating process of the raw material.

[0013] In one embodiment, the drying cylinder is a counter-current heating drying cylinder, which includes a feed end cap, cylinder body, guide plate, bridge-type anti-segregation device, discharge end cap, hot air furnace, asphalt flue gas secondary circulation duct, burner, frame, transmission device, dust removal system and pipeline components, duct valves, and heating and insulation device.

[0014] The raw material is fed into the drying cylinder through the feed end cap. Due to the rotation and tilt of the drying cylinder, the raw material moves towards the lower end. The guide plate is used to spread the raw material to form a uniform material curtain. The burner and hot air furnace are used to provide hot air to the material curtain. During the movement of the raw material towards the lower end, the bridge-type anti-segregation device is used to prevent the segregation of large-diameter aggregates and small-diameter aggregates. The discharge end cap is used to output the heated raw material. The dust removal system and pipelines are used to collect dust during the heating process of the raw material.

[0015] In one embodiment, the metering device includes a powder scale, a mixing scale, an asphalt scale, an additive scale, and a warm mix agent scale; the mixing scale is connected to the hot mixing silo and is used to receive heated raw materials; the powder scale, asphalt scale, and additive scale are used to add different materials.

[0016] In one embodiment, the mixing system includes a cylinder, a reducer, a door opening mechanism, and mixing blades. The cylinder transports the timed mixed material to the finished product storage silo, and the cylinder has a heat preservation function.

[0017] In one embodiment, the system also includes an environmental protection system, which consists of an asphalt fume treatment system and a dust removal system; the dust removal system includes a gravity dust collector, a bag filter, a fan, a dust collection hopper, and a dust discharge spiral.

[0018] In one embodiment, the finished product storage silo includes a storage silo body, a door opening structure, a storage anti-segregation device, and a heat preservation device.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. The raw materials (qualified materials) are weighed in the corresponding virgin material grading machine and recycled material grading machine. The weighing is controlled by computer and sensors. Then, according to the mixing ratio requirements, the materials are spread evenly and accurately on the main conveyor belt, which transports them to the homogenizer for pre-mixing. After that, the materials are sent to the mixing elevator by the mixing conveyor belt. The bucket elevator feeds the materials to a specially designed mixing drying cylinder for drying and heating. The heated materials fall into the heat-insulated and segregation-preventing mixing hot aggregate bin. The computer intelligent system controls the discharge of materials from the mixing hot aggregate bin to the metering device for weighing. The metering device discharges the materials into the cylinder. At the same time, the asphalt, mineral powder, additives and other materials required for the asphalt mixture are also metered and added to the cylinder for timed mixing. The mixed asphalt mixture is then transferred from the cylinder to the finished product storage bin with heat-insulated and segregation-preventing device for temporary storage and awaiting transfer. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the production of asphalt mixture by the C-type forced intermittent asphalt mixture virgin recycling integrated machine in use, as described in this application embodiment.

[0022] Figure 2 This is a schematic diagram of the overall structure of the C-type forced intermittent asphalt mixture virgin recycling integrated machine;

[0023] Figure 3 This is a structural schematic diagram of a material grading machine;

[0024] Figure 4 This is a schematic diagram of the material layers stacking;

[0025] Figure 5 This is a structural schematic diagram of the main conveyor belt conveyor;

[0026] Figure 6 This is a schematic diagram of a homogenizer;

[0027] Figure 7 This is a structural schematic diagram of a material mixing elevator;

[0028] Figure 8 This is a schematic diagram of the counter-current drying drum;

[0029] Figure 9 This is a schematic diagram of a co-current drying drum;

[0030] Figure 10 This is a structural diagram of the hot mixing bin;

[0031] Figure 11 This is a schematic diagram of the metering device;

[0032] Figure 12 This is a schematic diagram of the stirring system;

[0033] Figure 13This is a schematic diagram of a bottom-mounted finished product storage silo;

[0034] Figure 14 This is a structural diagram of a side-mounted finished product storage silo;

[0035] Figure 15 This is a schematic diagram of the environmental protection system;

[0036] Figure 16 This is a schematic diagram of a computer intelligent control system.

[0037] Explanation of reference numerals in the attached drawings: 1. Grading machine; 11. Virgin material grading machine; 12. Recycled material grading machine; 101. Batching bin; 102. Belt scale; 1021. Belt; 1022. Mass scale; 1023. Speed ​​sensor; 103. Metering bin door; 104. Metering sensor; 105. Position sensor; 2. Homogenizer; 3. Main conveyor belt conveyor; 4. Mixing and conveying device; 41. Mixing conveyor belt conveyor; 42. Mixing elevator; 421. Elevator housing; 4211. Lower housing; 4212. Middle shell; 4213. Upper shell; 4214. Feed hopper; 4215. Anti-segregation discharge pipe; 4216. First reducer; 422. Lifting hopper; 423. Chain; 424. Tensioning device; 5. Mixing, drying, and heating treatment device; 501. Burner; 502. Hot air furnace; 503. Discharge end cap; 504. Cylinder; 505. Frame; 506. Transmission device; 507. Bridge-type anti-segregation device; 508. Heating and insulation device; 509. W-shaped guide plate; 5010. 5011. Feed head; 5012. Dust removal system; 5013. Asphalt flue gas secondary circulation duct; 5014. Duct valve; 51. Mixing and drying cylinder; 515. Counter-current drying cylinder; 52. Mixing hot silo; 526. Hot silo body; 527. Heating and anti-segregation device; 528. Weighing sensor; 529. Discharge device; 520. First insulation device; 6. Metering device; 61. Powder scale; 62. Mixing metering hopper; 63. Asphalt scale; 64. Additive scale; 65. Warm mix agent scale; 7. Mixing system 71. Cylinder; 72. Second reducer; 73. Agitator blades; 74. Door opening mechanism; 75. Synchronous gear; 8. Finished product storage silo; 81. Storage silo body; 82. Door opening structure; 83. Storage anti-segregation device; 84. Second insulation device; 9. Environmental protection system; 91. Gravity dust collector; 92. Bag dust collector; 93. Fan; 94. Ash collection hopper; 95. Powder discharge spiral; 01. Computer intelligent control system; 011. Remote control system; 012. Management and operation system; 013. Batching system. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-15 This application will be described in further detail.

[0039] This application discloses a C-type forced intermittent asphalt mixture virgin recycling integrated machine. (Refer to...) Figure 1 and Figure 2 The C-type forced intermittent asphalt mixture virgin and recycled integrated machine includes multiple grading machines 1 for accurately proportioning raw materials, a homogenizing mixer 2 for pre-mixing the proportioned raw materials, a main conveyor belt 3 connecting the grading machines 1 and the homogenizing mixer 2 and transporting the raw materials, a mixing conveyor device 4 connected to the homogenizing mixer 2 for transporting the mixture, a mixing drying and heating treatment device 5 for drying and heating the mixture, a metering device 6 for metering additives and additives, a mixing system 7 located below the metering device 6, and a finished product storage silo 8 for storing the mixed finished product. It also includes a computer intelligent control system 01, which controls the operation of all devices. The grading machines 1 include multiple virgin material grading machines 11 and multiple recycled material grading machines 12, with the virgin material grading machines 11 and recycled material grading machines 12 having the same structure.

[0040] like Figure 3 The material grading machine 1 includes a batching bin 101, a belt scale 102 located directly below the batching bin 101 for weighing the raw materials inside the batching bin 101, and a metering chamber door 103 located on the side wall of the batching bin 101 near the belt scale 102. After the metering chamber door 103 is calibrated, the raw materials in the batching bin 101 are placed on the belt scale 102 under gravity, and the raw materials on the belt scale 102 are weighed and transported by the belt scale 102. The batching bin 101 is funnel-shaped, with the end of the batching bin 101 furthest from the belt scale 102 being the feeding end. A metering sensor 104 is installed on the side wall of the batching bin 101 near the feeding end to sense the mass of the raw materials added to the batching bin 101. The belt scale 102 includes a belt 1021, a mass scale 1022, and a speed sensor 1023. The mass scale 1022 is used to weigh the material on the belt 1021, and the speed sensor 1023 is used to control the speed of the belt 1021. The belt scale 102 is speed-regulated by the speed sensor 1023 to adjust the feeding rate. The speed sensor 1023 and the metering sensor 104 can accurately calculate the quantity of raw materials, ensuring accurate stacking of multiple raw materials. To ensure accurate material conveying, a position sensor 105 is also provided on one side of the belt scale 102. Figure 4 When the first material is transported to the bottom of the second material, the belt scale 102 is started to rotate, so that the second material falls accurately on top of the first material on the belt 1021. There are multiple batching bins 101, so there are multiple layers of material stacked on the main conveyor belt 3.

[0041] The superimposed raw materials are conveyed to the homogenizer 2 via the main conveyor belt 3, as per [reference]. Figure 5The main conveyor belt 3 includes a frame, belt, rollers, idlers, reducer, and tensioning device. Raw materials from the virgin aggregate grading machine 11 and the recycled aggregate grading machine 12 are sequentially laid onto the main conveyor belt 3 under controlled conditions. During production, the first type of material is placed first. When the first type of material reaches the discharge port of the second type of material on the belt 1021, the position sensor 105 sends a signal, which is controlled by the computer intelligent control system 01 to immediately place the second type of material. Similarly, when the layered material on the belt 1021 reaches the discharge port of the third type of material, the third type of material is immediately placed, and so on, until every type of material required for asphalt mixture gradation is stacked onto the main conveyor belt 3. Through the control of the computer intelligent control system 01, the proportion of different aggregates on any cross-section of the main conveyor belt 3 meets the requirements for asphalt mixture gradation.

[0042] Homogenizer 2 is used to mix multiple stacked raw materials, as described above. Figure 6 The homogenizer 2 includes a cylinder, mixing blades, a reducer, and synchronous gears. The function of the homogenizer is to thoroughly mix various virgin materials if the processed materials are all virgin materials; and to fuse virgin and recycled materials if they are virgin and recycled materials, creating an interspersed virgin and recycled material mixture that does not segregate. Optionally, the homogenizer 2 can be continuously discharging or intermittently discharging; optionally, the mixing blades 73 can be designed as discrete or continuously spiral.

[0043] The mixing and conveying device 4 transports the mixed material from the homogenizing mixer 2 to the mixing, drying, and heating treatment device 5. The mixing and conveying device 4 includes a mixing conveyor belt conveyor 41 and a mixing elevator 42. (See reference...) Figure 7 The mixing conveyor belt 41 transports the mixed material in the homogenizer 2 to the mixing elevator 42. The mixing elevator 42 includes an elevator housing 421, multiple lifting hoppers 422 disposed within the elevator housing 421, a chain 423 connecting the multiple lifting hoppers 422, a tensioning device 424 for tensioning the chain 423, and a first reducer 4216 for controlling the lifting speed of the lifting hoppers 422. The mixing elevator 42 housing includes a lower housing 4211, a middle housing 4212, and an upper housing 4213. A feeding hopper 4214 is provided on the side wall of the lower housing 4211, through which material is added to the lifting hoppers 422. An anti-segregation discharge pipe 4215 is provided at the upper housing 4213. The mixing elevator 42 is used to lift the material to a certain height and place it into the mixing, drying, and heating treatment device 5 without segregation.

[0044] The mixing, drying, and heating treatment apparatus 5 includes a mixing and drying cylinder 51 and a mixing hot material bin 52. The mixing and drying cylinder 51 can be a counter-current drying cylinder 511 or a co-current drying cylinder. In an optional embodiment, the mixing and drying cylinder 51 is a counter-current drying cylinder 511, as shown in the reference. Figure 8 The counter-current drying cylinder 511 includes a burner 501, a hot air furnace 502 connected to the burner 501, a discharge head 503, a cylinder 504 connected to the discharge head 503, a support frame 505 located directly below the cylinder 504, a transmission device 506 located between the cylinder 504 and the support frame 505, a bridge-type anti-segregation device 507 for preventing segregation, a heating and insulation device 508, a W-shaped guide plate 509 for forming a material curtain, a feed head 5010, and a dust removal system 5011 located at the feed head 5010. It also includes a secondary circulation duct for asphalt flue gas 5012, one end of which is located between the burner 501 and the hot air furnace 502, and the other end of which is connected to the feed head. A duct valve 5013 is installed on the secondary circulation duct for asphalt flue gas 5012.

[0045] In an optional embodiment, when using 100% virgin material, the material is fed into the drying drum through the feed head 5010. As the drying drum rotates and tilts, the material moves towards the lower end, where it is scattered by the W-shaped guide plate to form a uniform material curtain. This curtain exchanges fully with the hot air provided by the burner 501 and the hot air furnace 502 in a counter-current flow. During this movement, the bridge-type anti-segregation device 507 prevents large-diameter materials from separating from small-diameter materials. The heated material is discharged through the discharge head 503. Since the duct valve 5013 is closed, dust generated during the heating process is collected by the dust removal system 5011 and pipelines. In an optional embodiment, when producing 100% recycled material or adding a certain proportion of recycled material, the duct valve 5013 is opened. The generated asphalt fumes are drawn into the hot air furnace 502 through the asphalt fumes secondary circulation duct 5012 for partial secondary combustion. The remaining fumes and dust are collected by the dust removal system 5011 and pipelines.

[0046] In an optional embodiment, the mixing and drying cylinder 51 is a co-current drying cylinder, as shown in the reference. Figure 9The co-current drying drum includes a discharge head 503, a drum body 504, a frame 505, a transmission device 506, a bridge-type anti-segregation device 507, a heating and insulation device 508, a W-shaped guide plate 509, a feed head 5010, and a burner 501. Optionally, the material is fed into the co-current drying drum through the feed head 5010. As the co-current drying drum rotates and tilts, the material moves towards the lower end, and under the action of the W-shaped guide plate, it is scattered to form a uniform material curtain, which fully exchanges with the hot air provided by the burner 501. During the movement of the material towards the lower end, the bridge-type anti-segregation device 507 prevents the separation of large-diameter and small-diameter materials. The heated material is discharged through the discharge head 503, and the dust and harmful fumes generated during the material heating process are collected through pipelines and a dust removal system 5011. The counter-current drying drum and the co-current drying drum correspond to the counter-current heating method and the co-current heating method, respectively. Both the counter-current heating method and the co-current heating method can produce 100% virgin materials, 100% recycled materials, or produce virgin materials and recycled materials in a certain ratio.

[0047] Reference Figure 10 The mixing hot material silo 52 includes a hot material silo body 521, a heating and anti-segregation device 522 installed inside the hot material silo body 521, a weighing sensor 523 installed on the outer wall of the hot material silo body 521, a discharging device 524 located below the hot material silo body 521, and a first heat preservation device 525 installed outside the hot material silo body 521. The weighing sensor 523 has a three-sensor structure. This mixing hot material silo 52 provides accurate weighing, good heat preservation, and the heating and anti-segregation device 522 ensures stable material distribution without segregation. Figure 11 The metering device 6 includes a powder scale 61, a mixing scale 62, an asphalt scale 63, an additive scale 64, and a warm mix additive scale 65. All metering devices meet the accuracy requirements, and other material metering devices can be added as needed for the project. The mixing system 7 is located directly below the metering device 6.

[0048] Reference Figure 12 The mixing system 7 includes a cylinder 71, a second reducer 72 located at one end of the cylinder 71, mixing blades 73 located inside the cylinder 71, a door opening mechanism 74 located at the bottom of the cylinder 71, and a synchronous gear 75 located at the end of the cylinder 71 away from the second reducer 72. The mixing system 7 is used to mix metered materials into qualified asphalt mixture within a predetermined design time. The material mixed by the mixing system 7 leaves the cylinder 71 and falls into the finished product storage silo 8. (Refer to...) Figure 12The finished product storage silo 8 includes a storage silo body 81, a door opening structure 82 located at the bottom of the storage silo body 81, a storage anti-segregation device 83 located inside the storage silo body 81, and a second insulation device 84 located outside the storage silo body 81. The finished product storage silo 8 is used for temporary storage of asphalt mixtures, offering good production continuity, improved production and operational efficiency, good insulation, flexible opening and closing of the discharge door, and prevention of asphalt mixture segregation. In an optional embodiment, refer to... Figure 13 The finished product storage silo can be bottom-mounted; in an optional embodiment, refer to... Figure 14 Finished product storage silos can also be side-mounted finished product silos.

[0049] Reference Figure 15 It also includes an environmental protection system 9, which is connected to the mixing and drying cylinder 51 via a duct. One end of the duct is connected to the environmental protection system 9, and the end of the duct away from the environmental protection system 9 is located between the mixing elevator 42 and the mixing and drying cylinder 51. The environmental protection system 9 includes a gravity dust collector 91, a bag filter 92, a fan 93, a dust collection hopper 94, and a dust discharge screw 95. Its function is to treat and collect harmful fumes and dust generated during production to achieve environmental protection effects.

[0050] Reference Figure 16 The computer intelligent control system 01 includes a remote control system 011, a management and operation system 012, and a batching system 013. The batching system 013 includes a gradation metering system, a mixing conveying system, a mixing heating system, a metering system, a mixing system 7, a finished product storage system, and an environmental protection system 9. Specifically, the gradation metering system controls the virgin material grading machine 11 and the recycled material grading machine 12; the raw material conveying system controls the main conveyor belt 3, the homogenizer 2, the mixing conveyor belt 41, and the mixing elevator 42; the mixing heating system controls the mixing drying drum 51, the temperature control system, and the finished product storage silo 8; and the metering system controls the metering of mixed materials, powder materials, asphalt, and additives.

[0051] The implementation principle of this application embodiment is as follows: The raw materials (qualified materials) are put into the corresponding virgin material grading machine 11 and recycled material grading machine 12 for weighing. The weighing is controlled by computer and sensors. Then, according to the proportion requirements, the materials are spread evenly and accurately onto the main conveyor belt 3. The main conveyor belt 3 transports the materials to the homogenizer 2 for pre-mixing. Then, the materials are sent to the mixing elevator 42 by the mixing conveyor belt 41. The bucket mixing elevator 42 feeds the materials to the specially designed mixing drying cylinder 51 for drying and heating. The heated materials fall into the heat-insulated and anti-segregation mixing hot material silo 52. The computer intelligent system controls the mixing hot material silo 52 to open and discharge the materials to the metering device 6 for weighing. The metering device 6 discharges the materials into the cylinder 71. At the same time, the asphalt, mineral powder, additives and other materials required for the asphalt mixture are also metered and put into the cylinder 71 for timed mixing. The mixed asphalt mixture is put from the cylinder 71 into the finished product storage silo 8 with the storage anti-segregation device 83 for temporary storage and waiting for transfer.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A C-type forced intermittent asphalt mixture virgin recycling integrated machine, characterized in that, include: Multiple material grading machines (1), each of which is used to precisely batch different raw materials; a main conveyor belt (3); a homogenizing mixer (2) for mixing multiple different raw materials; a mixing and drying heat treatment device (5) for heating the mixed multiple different raw materials; a mixing hot material silo (52) for temporarily storing the heated mixture; a metering device (6); a mixing system (7) located below the metering device (6); and a finished product storage silo (8) for storing finished products. The material grading machine (1) includes a batching bin (101) and a belt scale (102) located directly below the batching bin (101) for weighing the raw materials in the batching bin (101). A metering sensor (104) for sensing the mass of the raw materials added to the batching bin (101) is installed on the side wall near the feed end of the batching bin (101). The belt scale (102) includes a belt (1021), a mass scale (1022), and a speed sensor (1023). The mass scale (1022) is used to weigh the material on the belt (1021), and the speed sensor (1023) is used to control the speed of the belt (1021). The belt scale (102) is frequency-controlled to adjust the feed rate. The speed sensor (1023) and the metering sensor (104) can accurately calculate the quantity of raw materials to ensure accurate stacking of multiple raw materials. To ensure accurate material transmission, a position sensor (105) is also provided on one side of the belt scale (102). When the first material is transported to the bottom of the second material, the belt scale (102) is started to rotate so that the second material falls accurately on the top of the first material on the belt (1021). There are multiple batching bins (101) so that multiple layers of material are stacked on the main conveyor belt (3). The stacked raw materials are conveyed to the homogenizing mixer (2) through the main conveyor belt (3). The mixing, drying, and heating treatment device (5) includes a drying cylinder and a mixing hot material bin (52). The drying cylinder has a heating and heat preservation device (508) for heating and heat preservation of the drying cylinder. The drying cylinder includes a guide plate for spraying the raw materials to form a uniform material curtain so that the raw materials can fully exchange with the hot air. The homogenizer (2) pre-mixes multiple raw materials and conveys them to the drying cylinder. The drying cylinder heats the mixed materials and temporarily stores the heated mixture in the hot material bin (52), which can then be conveyed to the mixing system (7). The metering device (6) weighs different materials and conveys them to the mixing system (7). The mixing system (7) mixes the heated mixture with different materials at regular intervals and temporarily stores it in the finished product storage bin (8).

2. The C-type forced intermittent asphalt mixture virgin recycling integrated machine according to claim 1, characterized in that, The drying cylinder is a co-current heating drying cylinder, which includes a burner (501), a feed end cap (5010), a cylinder body (504), a guide plate, a bridge-type anti-segregation device (507), a discharge end cap (503), a pipeline and dust removal system (5011), a pipeline, a frame (505), a transmission device (506), and a heating and heat preservation device (508). The raw material is fed into the drying cylinder through the feed end cap (5010). Due to the rotation and tilt of the drying cylinder, the raw material moves towards the lower end. The guide plate is used to spread the raw material to form a uniform material curtain. The burner (501) is used to provide hot air to the spread material curtain. The bridge-type anti-segregation device (507) is used to prevent large-diameter raw materials from separating from small-diameter raw materials. The discharge end cap (503) is used to discharge the heated raw material. The pipeline and dust removal system (5011) is used to collect dust and harmful fumes during the heating process of the raw material.

3. The C-type forced intermittent asphalt mixture virgin recycling integrated machine according to claim 1, characterized in that: The drying cylinder is a counter-current heating drying cylinder, which includes a feed end cap (5010), a cylinder body (504), a guide plate, a bridge-type anti-segregation device (507), a discharge end cap (503), a hot air furnace (502), an asphalt flue gas secondary circulation duct (5012), a burner (501), a frame (505), a transmission device (506), a dust removal system (5011) and pipeline components, duct valves (5013), and a heating and insulation device (508). The raw material is fed into the drying cylinder through the feed end cap (5010). Due to the rotation and tilt of the drying cylinder, the raw material moves towards the lower end. The guide plate is W-shaped and is used to spread the raw material to form a uniform material curtain. The burner (501) and hot air furnace (502) are used to provide hot air to the material curtain. During the movement of the raw material towards the lower end, the bridge-type anti-segregation device (507) is used to prevent large-diameter aggregate from segregating with small-diameter aggregate. The discharge end cap (503) is used to discharge the heated raw material. The dust removal system (5011) and pipelines are used to collect dust during the heating process of the raw material.

4. The C-type forced intermittent asphalt mixture virgin recycling integrated machine according to claim 1, characterized in that: The metering device (6) includes a powder scale (61), a mixing metering hopper (62), an asphalt scale (63), an additive scale (64), and a warm mixing agent scale (65); the mixing metering hopper (62) is used to receive the raw materials after the drum is heated.

5. The C-type forced intermittent asphalt mixture virgin recycling integrated machine according to claim 1, characterized in that, The mixing system (7) includes a cylinder (71), which transports the timed mixed material to the finished product storage bin (8), and the cylinder (71) has a heat preservation function.

6. The C-type forced intermittent asphalt mixture virgin recycling integrated machine according to claim 1, characterized in that: The finished product storage silo (8) includes a storage silo body (81), an opening structure (82) at the bottom of the storage silo body (81), a storage anti-segregation device (83) inside the storage silo body (81), and a second heat preservation device (84) outside the storage silo body (81).

Citation Information

Patent Citations

  • Belt type metering scale control system

    CN114593796A

  • Cold-mix asphalt mixture and concrete plant mixing device integrated system

    CN115613416A

  • Multi-chamber mixed blanking device

    CN203611374U

  • High volume of mixing hot mix plant recycling pitch agitated vessel

    CN206015475U

  • Portable cold aggregate supply apparatus in pitch station

    CN207176448U