Intelligent feeding device for recycled asphalt mixture

Abstract

This invention discloses an intelligent feeding device for recycled asphalt mixtures, belonging to the field of asphalt processing technology. It includes a support; an intelligent metering unit comprising a first intelligent metering unit connected to a first feeding unit, a second intelligent metering unit connected to a second feeding unit, and a third intelligent metering unit connected to a third feeding unit; a solid storage unit connected to the first intelligent metering unit via a first conveying pipe; a liquid storage unit connected to the second intelligent metering unit via a second conveying pipe; and a fiber storage unit connected to the third intelligent metering unit via a third conveying pipe. A mixing unit is connected to the solid storage unit, liquid storage unit, and fiber storage unit via pipes respectively. A control unit is integrated on the support to achieve fully automated control of the entire process. This invention, through integrated structural design and intelligent collaborative control, achieves high-precision metering, low-damage feeding, and uniform mixing of materials in various forms.

Description

Technical Field

[0001] This invention belongs to the field of asphalt processing technology, and specifically relates to an intelligent feeding device for recycled asphalt mixture. Background Technology

[0002] Asphalt pavement recycling technology, with its significant advantages of environmental protection, energy conservation, and resource saving, has become one of the core technologies in highway maintenance and road construction. The production quality of recycled asphalt mixtures directly determines the road performance and service life of recycled asphalt pavements. As the core process in the production of recycled asphalt mixtures, the feeding process, its feeding accuracy, material pretreatment effect, and degree of automation directly affect the uniformity and formula conformity of the mixture.

[0003] Currently, there are still many technical defects in the feeding process of recycled asphalt mixtures, making it difficult to meet the needs of large-scale and standardized production. Firstly, the material storage and feeding stages lack targeted pretreatment structures. Direct feeding of solid aggregates into the storage bins can easily cause wear and tear due to impact, and can also lead to accumulation and arching problems. When liquid additives are fed into the bins, excessive flow rates can cause splashing and waste, and localized impacts can lead to uneven mixing within the bins. Fiber materials are prone to clumping and entanglement; direct feeding will result in uneven fiber dispersion in the mixture, significantly reducing the crack resistance and fatigue resistance of asphalt pavements. Secondly, the feeding and metering methods are relatively crude, often using a single bin for rough weighing without dedicated metering units for different forms of materials (solid, liquid, and fiber). This results in low metering accuracy, easily leading to feeding deviations and causing the mixture formula to deviate from the preset standards, affecting the quality of pavement construction. Thirdly, the feeding unit design is homogeneous; solid, liquid, and fiber materials are all fed using simple pipes or troughs. Direct dripping of liquid materials can easily cause localized adhesion to aggregates, and undispersed fiber materials can easily form clusters, resulting in insufficient mixing of the mixture. Fourth, the entire feeding process has a low degree of automation. There is a lack of coordinated control in the storage, metering, feeding, and mixing stages, which requires a lot of manual intervention. This not only increases labor costs, but also amplifies feeding errors due to the randomness of manual operation. At the same time, there are certain safety hazards in human contact with high-temperature and high-viscosity asphalt materials.

[0004] In addition, although some existing feeding devices have made simple improvements for single materials, they have not achieved integrated design for solid, liquid and fibrous materials. Each device operates independently, resulting in low space utilization and a lack of a unified control center. This makes it impossible to achieve intelligent control and data linkage throughout the entire process, and it is difficult to meet the needs of large-scale production of recycled asphalt mixtures.

[0005] Therefore, developing an intelligent feeding device for recycled asphalt mixtures that can achieve pretreatment, precise metering, directional feeding, coordinated mixing, and fully automated control of materials of different forms has become a technical problem that urgently needs to be solved in the industry. Summary of the Invention

[0006] To achieve the above objectives, this invention provides an intelligent feeding device for recycled asphalt mixtures, solving problems such as poor material pretreatment, low metering accuracy, uneven mixing, and low automation in existing recycled asphalt mixture feeding processes. It achieves integrated intelligent feeding of solid, liquid, and fibrous materials, improving the production quality and efficiency of recycled asphalt mixtures. The invention adopts the following technical solution: A smart feeding device for recycled asphalt mixture includes: Support; A feeding unit, comprising a first feeding unit, a second feeding unit, and a third feeding unit respectively installed on the support; An intelligent metering unit is installed on the support; the intelligent metering unit includes a first intelligent metering unit connected to the first feeding unit, a second intelligent metering unit connected to the second feeding unit, and a third intelligent metering unit connected to the third feeding unit; A solid material storage unit is installed on the support and connected to the first intelligent metering unit through a first conveying pipe, for storing, pre-processing and weighing solid materials; A liquid storage unit is installed on the support and connected to the second intelligent metering unit through a second conveying pipe, for storing, pre-treating and weighing liquid materials; A fiber storage unit is installed on the support and connected to the third intelligent metering unit through a third conveying pipe, for storing, pre-processing and weighing fiber materials; A stirring unit is connected to the solid storage unit, the liquid storage unit, and the fiber storage unit via pipes, and is used to stir and mix solid materials, liquid materials, and fiber materials. The control unit is integrated on the support and is electrically connected to the feeding unit, the first intelligent metering unit, the second intelligent metering unit, the third intelligent metering unit, the solid storage unit, the liquid storage unit, the fiber storage unit and the stirring unit respectively, so as to realize the full-process automated control.

[0007] Furthermore, the stirring unit includes a first stirring motor, a first stirring shaft, stirring blades, and a stirring hopper; the stirring hopper is installed on the support and located below the first feeding unit; the first stirring shaft is disposed inside the stirring hopper; the fixed end of the first stirring motor is installed on the stirring hopper, and the driving end extends into the stirring hopper and is connected to the first stirring shaft.

[0008] Furthermore, the first feeding unit includes a first screw feeder; the first screw feeder is mounted on the support; the inlet pipe of the first screw feeder is connected to the outlet of the first intelligent metering unit, and the outlet is connected to the mixing silo through a first connecting pipe; the first screw feeder is electrically connected to the control unit.

[0009] Furthermore, the second feeding unit includes a liquid delivery pipe, a liquid discharge pump, and a spray pipe; the spray pipe is disposed inside the mixing silo; one end of the liquid delivery pipe is connected to the outlet of the second intelligent metering unit through a pipe, and the other end extends into the mixing silo and is connected to the spray pipe; the liquid discharge pump is installed on the liquid delivery pipe and is used to pump out the liquid material in the second intelligent metering unit; the liquid discharge pump is electrically connected to the control unit.

[0010] Furthermore, the third feeding unit includes a second screw feeder; the second screw feeder is installed on the support; the inlet of the second screw feeder is connected to the outlet of the third intelligent metering unit through a pipe, and the outlet is connected to the mixing silo through a second connecting pipe; the second screw feeder is electrically connected to the control unit.

[0011] Furthermore, the solid material storage unit includes a solid material storage bin and a buffer plate; the solid material storage bin is installed on the support and is correspondingly positioned above the first screw feeder; the inlet of the solid material storage bin is connected to the solid material supply unit through a pipe, and the outlet is connected to the inlet of the first intelligent metering unit through the first conveying pipe; multiple buffer plates are provided; the multiple buffer plates are staggered from top to bottom inside the solid material storage bin; one end of the buffer plate is connected to the inner wall of the solid material storage bin, and the other end is inclined downward to buffer the solid material entering the solid material storage bin.

[0012] Furthermore, the liquid storage unit includes a liquid storage silo and a spiral plate; the liquid storage silo is installed on the support and correspondingly positioned above the delivery pipe; the inlet of the liquid storage silo is connected to the liquid supply unit via a pipe, and the outlet of the liquid storage silo is connected to the inlet of the second intelligent metering unit via the second delivery pipe; the spiral plate is installed inside the liquid storage silo to buffer the liquid material entering the liquid storage silo.

[0013] Furthermore, the fiber storage unit includes a fiber storage bin, a second stirring motor, a second stirring shaft, and cutting blades; the fiber storage bin is mounted on the support and correspondingly positioned above the second screw feeder; the inlet of the fiber storage bin is connected to the fiber feeding unit via a pipe, and the outlet is connected to the inlet of the third intelligent metering unit via the third conveying pipe; the second stirring motor is mounted on the top of the fiber storage bin, with its output end extending into the fiber storage bin and connected to the second stirring shaft located within the fiber storage bin; multiple cutting blades are provided; the multiple cutting blades are arranged in an array on the second stirring shaft for cutting the fibers within the fiber storage bin to pre-treat the fiber material; The bottoms of the solid storage silo, the liquid storage silo, and the fiber storage silo are all inclined.

[0014] Furthermore, the first intelligent metering unit includes a solid metering bin and a first weighing sensor; the inlet of the solid metering bin is connected to the outlet of the solid storage bin through the first conveying pipe, and the outlet of the solid metering bin is connected to the first screw feeder through a pipe; the first weighing sensor is installed at the inner bottom of the solid metering bin. The second intelligent metering unit includes a liquid metering chamber and a second weighing sensor; the inlet of the liquid metering chamber is connected to the outlet of the liquid storage chamber through the second delivery pipe, and the outlet of the liquid metering chamber is connected to the delivery pipe through a pipeline; the second weighing sensor is installed at the bottom inside the liquid metering chamber. The third intelligent metering unit includes a fiber metering bin and a third weighing sensor; the inlet of the fiber metering bin is connected to the outlet of the fiber storage bin through the third conveying pipe, and the outlet of the fiber metering bin is connected to the second screw feeder through a pipe; the third weighing sensor is installed at the bottom inside the fiber metering bin. Solenoid valves are provided at the outlets of the solid storage silo, the liquid storage silo, the fiber storage silo, the solid metering silo, the liquid metering silo, and the fiber metering silo.

[0015] Furthermore, the control unit includes a controller; the controller is electrically connected to the solenoid valve, the first weighing sensor, the second weighing sensor, the third weighing sensor, the first screw feeder, the liquid discharge pump, the second screw feeder, the first stirring motor, and the second stirring motor, respectively.

[0016] The intelligent feeding device for recycled asphalt mixture provided by this invention has the following beneficial effects: (1) Precise processing of multi-form materials to solidify the foundation for feeding: Design a special storage and pre-treatment structure and a one-to-one dedicated metering unit for solid, liquid and fiber materials to buffer aggregate impact, prevent liquid splashing and break up fiber clumps. Combined with weighing sensors and solenoid valves for precise quantity control, the material state and feeding accuracy are guaranteed in the whole process from pre-treatment to metering, ensuring a high degree of fit of the formula.

[0017] (2) Differentiated feeding and coordinated mixing to improve the uniformity of the mixture: Differentiated feeding methods are adopted according to the material form. Solid and fibrous materials are conveyed at a constant speed and in a quantitative manner by a screw feeder, and liquid materials are atomized and sprayed by a spray pipe. The mixing unit mixes in real time, avoiding material accumulation and local adhesion problems from the feeding stage, so as to achieve full integration of various materials and greatly improve the overall uniformity of recycled asphalt mixture.

[0018] (3) Full-process intelligent self-control, cost reduction, efficiency improvement and safety: With the control unit as the core, the electrical linkage and automatic control of the entire process of material storage, pretreatment, metering, feeding and mixing are realized. No manual on-site intervention is required throughout the process, which not only greatly reduces labor costs, but also eliminates the random errors of manual operation, and avoids the safety hazards of manual contact with asphalt materials, and significantly improves the feeding production efficiency.

[0019] (4) Integrated design with excellent adaptability and practicality: All functional units are integrated into the same support, and the compact layout improves space utilization, making it easy to install, move and arrange the equipment on site; it can be seamlessly connected with existing solid, liquid and fiber feeding units without large-scale production line modification, adapting to the production needs of recycled asphalt mixtures of different scales, and the linkage of each link forms a complete quality control system. The produced mixture has excellent road performance, extends the service life of recycled asphalt pavement, and has both economic and environmental benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the intelligent feeding device for recycled asphalt mixture of the present invention; Figure 2 This is a schematic diagram of the overall structure of the intelligent feeding device for recycled asphalt mixture of the present invention, which is connected to the solid feeding unit, the liquid feeding unit and the fiber feeding unit respectively. Figure 3 This is a side view of the intelligent feeding device for recycled asphalt mixture of the present invention; Figure 4 This is a top view of the intelligent feeding device for recycled asphalt mixture of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fiber storage bin of the intelligent feeding device for recycled asphalt mixture of the present invention; Figure 6 This is a schematic diagram of the internal structure of the liquid storage silo in the intelligent feeding device for recycled asphalt mixture of the present invention. Figure 7 This is a schematic diagram of the internal structure of the solid storage bin of the intelligent feeding device for recycled asphalt mixture of the present invention; The components are as follows: 1. Support; 2. Liquid metering bin; 3. Solid storage bin; 4. Liquid storage bin; 5. Fiber storage bin; 6. Second stirring motor; 7. Fiber metering bin; 8. Second screw feeder; 9. Mixing bin; 10. First screw feeder; 11. Solid metering bin; 12. Second stirring shaft; 13. Cutting blade; 14. Spiral plate; 15. Buffer plate; 16. Solid feeding unit; 17. Liquid feeding unit; 18. Fiber feeding unit; 19. Liquid discharge pump. Detailed Implementation

[0021] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below.

[0022] Example 1

[0023] Reference Figures 1 to 7 A smart feeding device for recycled asphalt mixture includes: Support 1; The feeding unit includes a first feeding unit, a second feeding unit, and a third feeding unit respectively installed on the support 1; The intelligent metering unit is installed on the support 1; the intelligent metering unit includes a first intelligent metering unit connected to the first feeding unit, a second intelligent metering unit connected to the second feeding unit, and a third intelligent metering unit connected to the third feeding unit. Solid material storage unit, which is installed on support 1 and connected to the first intelligent metering unit through the first conveying pipe, is used for storing, pre-processing and weighing solid materials. The liquid storage unit is installed on the support 1 and connected to the second intelligent metering unit through the second conveying pipe. It is used for storing, pre-treating and weighing liquid materials. The fiber storage unit is installed on the support 1 and connected to the third intelligent metering unit through the third conveying pipe. It is used for storing, pre-processing and weighing fiber materials. The mixing unit is connected to the solid storage unit, liquid storage unit, and fiber storage unit through pipes, and is used to mix solid materials, liquid materials, and fiber materials. The control unit is integrated on the support 1 and is electrically connected to the feeding unit, the first intelligent metering unit, the second intelligent metering unit, the third intelligent metering unit, the solid storage unit, the liquid storage unit, the fiber storage unit and the stirring unit respectively, so as to realize the full-process automated control.

[0024] In this embodiment, the stirring unit includes a first stirring motor, a first stirring shaft, stirring blades, and a stirring hopper 9; the stirring hopper 9 is mounted on the support 1 and located below the first feeding unit; the first stirring shaft is disposed inside the stirring hopper 9; the fixed end of the first stirring motor is mounted on the stirring hopper 9, and the driving end extends into the stirring hopper 9 and is connected to the first stirring shaft.

[0025] In this embodiment, the first feeding unit includes a first screw feeder 10; the first screw feeder 10 is mounted on the support 1; the inlet pipe of the first screw feeder 10 is connected to the outlet of the first intelligent metering unit, and the outlet is connected to the mixing silo 9 through the first connecting pipe; the first screw feeder 10 is electrically connected to the control unit.

[0026] In this embodiment, the second feeding unit includes a liquid delivery pipe, a liquid discharge pump 19, and a spray pipe; the spray pipe is installed inside the mixing silo 9; one end of the liquid delivery pipe is connected to the outlet of the second intelligent metering unit through a pipe, and the other end extends into the mixing silo 9 and is connected to the spray pipe; the liquid discharge pump 19 is installed on the liquid delivery pipe and is used to pump out the liquid material in the second intelligent metering unit; the liquid discharge pump 19 is electrically connected to the control unit.

[0027] In this embodiment, the third feeding unit includes a second screw feeder 8; the second screw feeder 8 is mounted on the support 1; the inlet of the second screw feeder 8 is connected to the outlet of the third intelligent metering unit through a pipe, and the outlet is connected to the mixing silo 9 through a second connecting pipe; the second screw feeder 8 is electrically connected to the control unit.

[0028] In this embodiment, the solid material storage unit includes a solid material storage bin 3 and a buffer plate 15. The solid material storage bin 3 is installed on the support 1 and is correspondingly positioned above the first screw feeder 10. The inlet of the solid material storage bin 3 is connected to the solid material supply unit through a pipe, and the outlet is connected to the inlet of the first intelligent metering unit through a first conveying pipe. Multiple buffer plates 15 are provided. Multiple buffer plates 15 are staggered from top to bottom inside the solid material storage bin 3. One end of the buffer plate 15 is connected to the inner wall of the solid material storage bin 3, and the other end is inclined downward to buffer the solid material entering the solid material storage bin 3.

[0029] In this embodiment, the liquid storage unit includes a liquid storage tank 4 and a spiral plate 14; the liquid storage tank 4 is installed on the support 1 and is correspondingly positioned above the infusion pipe; the inlet of the liquid storage tank 4 is connected to the liquid feeding unit 17 through a pipe, and the outlet of the liquid storage tank 4 is connected to the inlet of the second intelligent metering unit through a second conveying pipe; the spiral plate 14 is installed inside the liquid storage tank 4 to buffer the liquid material entering the liquid storage tank 4.

[0030] In this embodiment, the fiber storage unit includes a fiber storage bin 5, a second stirring motor 6, a second stirring shaft 12, and cutting blades 13. The fiber storage bin 5 is mounted on a support 1 and is correspondingly positioned above the second screw feeder 8. The inlet of the fiber storage bin 5 is connected to the fiber feeding unit 18 via a pipe, and the outlet is connected to the inlet of the third intelligent metering unit via a third conveying pipe. The second stirring motor 6 is mounted on the top of the fiber storage bin 5, and its output end extends into the fiber storage bin 5 and is connected to the second stirring shaft 12 located inside the fiber storage bin 5. Multiple cutting blades 13 are provided. Multiple cutting blades 13 are arranged in an array on the second stirring shaft 12 for cutting the fibers in the fiber storage bin 5 to pre-treat the fiber material. The bottoms of the solid storage silo 3, the liquid storage silo 4, and the fiber storage silo 5 are all inclined.

[0031] In this embodiment, the first intelligent metering unit includes a solid metering chamber 11 and a first weighing sensor; the inlet of the solid metering chamber 11 is connected to the outlet of the solid storage silo 3 through a first conveying pipe, and the outlet of the solid metering chamber 11 is connected to the first screw feeder 10 through a pipe; the first weighing sensor is installed at the inner bottom of the solid metering chamber 11. The second intelligent metering unit includes a liquid metering chamber 2 and a second weighing sensor; the inlet of the liquid metering chamber 2 is connected to the outlet of the liquid storage chamber 4 through a second conveying pipe, and the outlet of the liquid metering chamber 2 is connected to the liquid delivery pipe through a pipeline; the second weighing sensor is installed at the bottom inside the liquid metering chamber 2. The third intelligent metering unit includes a fiber metering bin 7 and a third weighing sensor; the inlet of the fiber metering bin 7 is connected to the outlet of the fiber storage bin 5 through a third conveying pipe, and the outlet of the fiber metering bin 7 is connected to the second screw feeder 8 through a pipe; the third weighing sensor is installed at the bottom inside the fiber metering bin 7. Solenoid valves are installed at the outlets of the solid storage silo 3, the liquid storage silo 4, the fiber storage silo 5, the solid metering silo 11, the liquid metering silo 2, and the fiber metering silo 7.

[0032] In this embodiment, the control unit includes a controller; the controller is electrically connected to the solenoid valve, the first weighing sensor, the second weighing sensor, the third weighing sensor, the first screw feeder 10, the liquid discharge pump 19, the second screw feeder 8, the first stirring motor, and the second stirring motor 6, respectively.

[0033] Through the above technical solution, the controller is the core control component of the entire intelligent feeding device for recycled asphalt mixture. It has a built-in programmable logic control module, data acquisition and processing module, and instruction output module. It establishes a stable electrical connection with each execution component and sensing component through an industrial bus. The specific connection relationship and control logic are as follows: the signal input terminal of the controller is electrically connected to the signal output terminals of the first weighing sensor, the second weighing sensor, and the third weighing sensor, and is used to receive the weight detection data of solid, liquid, and fibrous materials collected by each sensor in real time. The instruction output terminal of the controller is electrically connected to the control terminals of the solenoid valves at the outlets of the solid storage bin 3, the liquid storage bin 4, the fiber storage bin 5, the solid metering bin 11, the liquid metering bin 2, and the fiber metering bin 7, the drive motor control terminals of the first screw feeder 10 and the second screw feeder 8, the motor control terminal of the liquid discharge pump 19, and the control terminals of the first stirring motor and the second stirring motor 6.

[0034] Based on the above connection relationship, the controller can complete the closed-loop automatic control of the entire process according to the preset recycled asphalt mixture formula parameters and the real-time received weight data: First, it analyzes, compares and judges the weight data transmitted by each weighing sensor, compares the real-time weight with the preset target weight, and when the preset value is reached, it outputs on / off and opening adjustment commands to the solenoid valves of the corresponding storage bins and metering bins to achieve precise feeding and unloading of each material. At the same time, it calculates the cumulative error based on the deviation between the actual feeding amount and the preset value, and automatically adjusts the feeding amount in subsequent batches to complete error compensation; Second, after the solid metering bin 11 completes metering, it outputs start / stop and speed adjustment commands to the first screw feeder 10, and adjusts the speed according to the preset feeding speed and the working conditions of the mixing unit to achieve uniform and quantitative conveying of solid materials; Third, after the liquid metering bin 2 completes metering, it outputs start / stop and power commands to the liquid discharge pump 19. The flow rate is adjusted by controlling the frequency of the frequency converter to ensure that the liquid material is sprayed evenly through the spray pipe at a preset spray rate. Fourth, after the fiber metering bin 7 completes the metering, the start / stop and speed adjustment commands are sent to the second screw feeder 8 to adjust the speed according to the fiber type and preset feeding speed, so as to quantitatively transport the pre-cut fiber material. Fifth, the start / stop and speed adjustment commands are sent to the second stirring motor 6 to control the cutting blade 13 to pre-cut the material in the fiber storage bin 5 according to the fiber type and pretreatment requirements, so as to ensure that the fiber reaches the appropriate length and dispersion state before entering the metering bin. Sixth, according to the preset stirring process, the start / stop and speed adjustment commands are sent to the first stirring motor to synchronously control its operation status in conjunction with the feeding progress, so as to realize the coordinated linkage between feeding and stirring. After the stirring reaches the preset time, the stirring motor is stopped and the unloading gate is opened to complete the unloading.

[0035] In summary, through the aforementioned electrical connections and control logic, the controller enables coordinated operation of material storage, pretreatment, metering, feeding, and mixing processes. It also has the function of dynamically adjusting control parameters based on real-time feedback data, ensuring the accuracy, stability, and efficiency of recycled asphalt mixture production.

[0036] The working method of the intelligent feeding device for recycled asphalt mixture provided by this invention is as follows: First, solid aggregates, liquid additives, and fiber materials are conveyed to their respective storage silos via solid feeding unit 16, liquid feeding unit 17, and fiber feeding unit 18. Solid aggregates are buffered by buffer plate 15 and stored in solid storage silo 3. Liquid additives are slowly fed into liquid storage silo 4 via spiral plate 14. Fiber materials are cut and broken up by cutting blade 13 driven by second stirring motor 6 and stored in fiber storage silo 5. The controller opens the outlet solenoid valves of each storage silo, allowing materials to enter the corresponding intelligent metering unit. Each weighing sensor detects the material weight in real time, achieving the pre-set weight. After the weight is set, the controller closes the solenoid valve at the outlet of the storage silo; then the controller opens the solenoid valves at the outlet of each metering silo, and simultaneously starts the first screw feeder 10, the liquid pump 19, and the second screw feeder 8. Solid materials are fed into the mixing silo 9 at a uniform speed through the first screw feeder 10, liquid materials are atomized and sprayed into the mixing silo 9 through the spray pipe, and fibrous materials are fed into the mixing silo 9 at a uniform speed through the second screw feeder 8. At the same time as feeding, the controller starts the first mixing motor, which drives the mixing blades to rotate, realizing the instantaneous coordinated mixing of the three materials, and finally obtaining a uniform recycled asphalt mixture.

[0037] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A smart feeding device for recycled asphalt mixture, characterized in that, include: Support; A feeding unit, comprising a first feeding unit, a second feeding unit, and a third feeding unit respectively installed on the support; An intelligent metering unit is installed on the support; the intelligent metering unit includes a first intelligent metering unit connected to the first feeding unit, a second intelligent metering unit connected to the second feeding unit, and a third intelligent metering unit connected to the third feeding unit; A solid material storage unit is installed on the support and connected to the first intelligent metering unit through a first conveying pipe, for storing, pre-processing and weighing solid materials; A liquid storage unit is installed on the support and connected to the second intelligent metering unit through a second conveying pipe, for storing, pre-treating and weighing liquid materials; A fiber storage unit is installed on the support and connected to the third intelligent metering unit through a third conveying pipe, for storing, pre-processing and weighing fiber materials; A stirring unit is connected to the solid storage unit, the liquid storage unit, and the fiber storage unit via pipes, and is used to stir and mix solid materials, liquid materials, and fiber materials. The control unit is integrated on the support and is electrically connected to the feeding unit, the first intelligent metering unit, the second intelligent metering unit, the third intelligent metering unit, the solid storage unit, the liquid storage unit, the fiber storage unit and the stirring unit respectively, so as to realize the full-process automated control.

2. The intelligent feeding device for recycled asphalt mixture according to claim 1, characterized in that, The mixing unit includes a first mixing motor, a first mixing shaft, mixing blades, and a mixing hopper; the mixing hopper is installed on the support and located below the first feeding unit; the first mixing shaft is disposed inside the mixing hopper; the fixed end of the first mixing motor is installed on the mixing hopper, and the driving end extends into the mixing hopper and is connected to the first mixing shaft.

3. The intelligent feeding device for recycled asphalt mixture according to claim 2, characterized in that, The first feeding unit includes a first screw feeder; the first screw feeder is mounted on the support; the inlet pipe of the first screw feeder is connected to the outlet of the first intelligent metering unit, and the outlet is connected to the mixing silo through a first connecting pipe; the first screw feeder is electrically connected to the control unit.

4. The intelligent feeding device for recycled asphalt mixture according to claim 3, characterized in that, The second feeding unit includes a liquid delivery pipe, a liquid discharge pump, and a spray pipe; the spray pipe is installed inside the mixing silo; one end of the liquid delivery pipe is connected to the outlet of the second intelligent metering unit through a pipeline, and the other end extends into the mixing silo and is connected to the spray pipe; the liquid discharge pump is installed on the liquid delivery pipe and is used to pump out the liquid material in the second intelligent metering unit; the liquid discharge pump is electrically connected to the control unit.

5. The intelligent feeding device for recycled asphalt mixture according to claim 4, characterized in that, The third feeding unit includes a second screw feeder; the second screw feeder is installed on the support; the inlet of the second screw feeder is connected to the outlet of the third intelligent metering unit through a pipe, and the outlet is connected to the mixing silo through a second connecting pipe; the second screw feeder is electrically connected to the control unit.

6. The intelligent feeding device for recycled asphalt mixture according to claim 5, characterized in that, The solid material storage unit includes a solid material storage bin and a buffer plate; the solid material storage bin is installed on the support and is correspondingly positioned above the first screw feeder; the inlet of the solid material storage bin is connected to the solid material supply unit through a pipe, and the outlet is connected to the inlet of the first intelligent metering unit through the first conveying pipe; multiple buffer plates are provided; the multiple buffer plates are staggered from top to bottom inside the solid material storage bin; one end of the buffer plate is connected to the inner wall of the solid material storage bin, and the other end is inclined downward to buffer the solid material entering the solid material storage bin.

7. The intelligent feeding device for recycled asphalt mixture according to claim 6, characterized in that, The liquid storage unit includes a liquid storage silo and a spiral plate; the liquid storage silo is installed on the support and is correspondingly positioned above the liquid delivery pipe; the inlet of the liquid storage silo is connected to the liquid supply unit through a pipe, and the outlet of the liquid storage silo is connected to the inlet of the second intelligent metering unit through the second conveying pipe; the spiral plate is installed inside the liquid storage silo to buffer the liquid material entering the liquid storage silo.

8. The intelligent feeding device for recycled asphalt mixture according to claim 7, characterized in that, The fiber storage unit includes a fiber storage bin, a second stirring motor, a second stirring shaft, and cutting blades. The fiber storage bin is mounted on the support and is positioned above the second screw feeder. The inlet of the fiber storage bin is connected to the fiber feeding unit via a pipe, and the outlet is connected to the inlet of the third intelligent metering unit via the third conveying pipe. The second stirring motor is mounted on the top of the fiber storage bin, with its output end extending into the fiber storage bin and connected to the second stirring shaft located within the fiber storage bin. Multiple cutting blades are provided. These multiple cutting blades are arranged in an array on the second stirring shaft for cutting the fibers within the fiber storage bin to pre-treat the fiber material. The bottoms of the solid storage silo, the liquid storage silo, and the fiber storage silo are all inclined.

9. The intelligent feeding device for recycled asphalt mixture according to claim 8, characterized in that, The first intelligent metering unit includes a solid metering bin and a first weighing sensor; the inlet of the solid metering bin is connected to the outlet of the solid storage bin through the first conveying pipe, and the outlet of the solid metering bin is connected to the first screw feeder through a pipe; the first weighing sensor is installed at the inner bottom of the solid metering bin. The second intelligent metering unit includes a liquid metering chamber and a second weighing sensor; the inlet of the liquid metering chamber is connected to the outlet of the liquid storage chamber through the second delivery pipe, and the outlet of the liquid metering chamber is connected to the delivery pipe through a pipeline; the second weighing sensor is installed at the bottom inside the liquid metering chamber. The third intelligent metering unit includes a fiber metering bin and a third weighing sensor; the inlet of the fiber metering bin is connected to the outlet of the fiber storage bin through the third conveying pipe, and the outlet of the fiber metering bin is connected to the second screw feeder through a pipe; the third weighing sensor is installed at the bottom inside the fiber metering bin. Solenoid valves are provided at the outlets of the solid storage silo, the liquid storage silo, the fiber storage silo, the solid metering silo, the liquid metering silo, and the fiber metering silo.

10. The intelligent feeding device for recycled asphalt mixture according to claim 9, characterized in that, The control unit includes a controller; the controller is electrically connected to the solenoid valve, the first weighing sensor, the second weighing sensor, the third weighing sensor, the first screw feeder, the liquid discharge pump, the second screw feeder, the first stirring motor, and the second stirring motor, respectively.

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