A device for accurately controlling the moisture content of a red mud roadbed material
By combining microwave-negative pressure synergy with bidirectional moisture intervention technology, the problem of controlling the moisture content of red mud subgrade materials was solved, achieving efficient and low-energy precise control of the moisture content of red mud subgrade materials, and ensuring the uniformity and mechanical properties of the subgrade materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANXI CHANGCHENG ROAD & BRIDGE CONSTR & DEV CO LTD
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing technologies make it difficult to accurately control the moisture content of red mud subgrade materials. Traditional mechanical mixing and hot air drying methods are inefficient and energy-intensive, and the moisture is difficult to distribute evenly, resulting in unstable mechanical properties of red mud subgrade materials during construction.
By employing microwave-negative pressure synergy and bidirectional water intervention technology, microwaves are emitted by a microwave transmitter to cause water molecules inside the red mud to oscillate at high frequency and generate heat. Combined with a vacuum pump to create a negative pressure environment, the water inside the red mud is rapidly vaporized and extracted. Micro-droplets are generated by an ultrasonic atomizing nozzle to penetrate the pores between particles, achieving precise control.
It significantly improves the dewatering efficiency of red mud subgrade materials, reduces energy consumption, ensures uniform and consistent output moisture content, and meets the stringent specifications for high-grade highway subgrade construction.
Smart Images
Figure CN122209791B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of roadbed engineering material processing technology, specifically to a device for precise control of moisture content of red mud roadbed materials. Background Technology
[0002] Red mud is a highly alkaline industrial solid waste discharged during the extraction of alumina from bauxite. Using it as a roadbed filling material is an effective way to dispose of large quantities of solid waste. During roadbed construction, the moisture content of the fill material must be strictly controlled within the minimum error range of the optimum moisture content to ensure the compaction degree and the mechanical properties of the roadbed.
[0003] However, compared to conventional soil, red mud has extremely fine particles that are prone to hardening when left to stand. The particles contain a large amount of water and form core mud clumps that are difficult to break up completely with traditional mechanical stirring. Traditional hot air surface drying methods often result in the red mud surface rapidly losing water and forming a crust, while the internal water cannot be discharged. This results in extremely low drying efficiency and huge energy consumption. Red mud has dense pores, and when traditional watering or ordinary atomization is used, water droplets cannot penetrate into the particles due to surface tension, causing the red mud surface to quickly become muddy while the inside remains dry. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a device for precise control of the moisture content of red mud roadbed materials. This device can sense changes in stirring resistance in real time and judge the rheological properties of materials, adaptively select humidification or dehydration mode, overcome the surface tension limitation of water to achieve humidification, or rapidly vaporize internal moisture and extract moisture through microwave-negative pressure synergy. It has high dehydration efficiency, low energy consumption, precise control of intervention intensity, and extremely small moisture content variation coefficient.
[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: a device for precise control of moisture content of red mud roadbed material, comprising: a feeding and primary crushing unit, a core rheological mixing and moisture bidirectional intervention unit, a moisture detection component and a control center; The feeding and primary crushing unit includes: a quantitative feeding and weighing conveyor and a twin-shaft high-intensity deagglomeration crusher, with the output end of the quantitative feeding and weighing conveyor connected to the feed inlet of the twin-shaft high-intensity deagglomeration crusher; The core rheological mixing and moisture bidirectional intervention unit includes: a modulator connected to the output port of a dual-shaft high-power depolymerization crusher; the modulator integrates a humidification component and a microwave-negative pressure flash dehydration assembly; the microwave-negative pressure flash dehydration assembly includes: a microwave transmitter installed on the front wall of the modulator and a vacuum pump installed on the top of the modulator; the vacuum pump's pipe is connected to a vacuum extraction pipe located inside the modulator via bearings and sealing rings; a forced stirring motor is installed on the right side of the modulator, the forced stirring motor is connected to and drives a stirring shaft, the stirring shaft is provided with spirally arranged blades, and a dynamic torque sensor is installed between the forced stirring motor and the stirring shaft; The moisture detection component includes: a dynamic torque sensor, a feedback moisture sensor installed on the inner wall of the modulator, and a feedforward moisture sensor installed at the discharge end of the quantitative feeding weighing conveyor; Control Center: Electrically connected to the feeding and primary crushing unit, the core rheological mixing and moisture bidirectional intervention unit, and the moisture detection component, it performs PID closed-loop calculations based on a preset parameter coupling model and outputs execution commands.
[0006] Preferably, a modulation feed hopper is provided on the left side of the modulator, a baffle pusher is fixedly connected to the top of the modulator, a feed baffle is longitudinally inserted into the modulation feed hopper, and the pusher rod of the baffle pusher is fixedly connected to the top of the feed baffle.
[0007] Preferably, the bottom of the modulator is fixedly connected to a discharge channel, the top of the discharge channel has an arc-shaped structure, the spiral blades are arranged in a spiral shape on the outer surface of the stirring shaft, and the spiral blades are fixedly connected to a spiral outer edge with a spiral structure, the spiral outer edge is in contact with the bottom of the modulator and the arc surface above the discharge channel.
[0008] Preferably, the modulator has a baffle guide opening on its rear wall, and a discharge baffle is slidably connected inside the baffle guide opening. A discharge push cylinder is fixedly connected to the rear of the modulator, and the push rod of the discharge push cylinder is fixedly connected to the discharge baffle. The discharge channel is connected to the modulator through a channel inlet opened at its top, and the discharge baffle is tightly fitted to the channel inlet.
[0009] Preferably, a discharge motor is fixedly connected to the left end of the discharge channel, and a screw pusher is rotatably connected inside the discharge channel via a bearing. The discharge motor is connected to and drives the screw pusher, and a channel outlet is opened at the bottom right end of the discharge channel.
[0010] Preferably, the humidification component includes ultrasonic atomizing nozzles distributed at the top inside the modulator, and a water supply solenoid valve and an airflow solenoid valve connected to the ultrasonic atomizing nozzles via pipes. The input end of the airflow solenoid valve is connected to a high-pressure fan, and the input end of the water supply solenoid valve is connected to a water supply pipe.
[0011] Preferably, the modulator has a transmitter mounting port at the front and a transmitter docking arc plate with an arc surface structure at the rear of the microwave transmitter, the arc surface of the transmitter docking arc plate matching the arc surface of the bottom surface of the modulator.
[0012] Preferably, the vacuum tube is rotatably connected to the modulator via a bearing, the axis of the vacuum tube is parallel to the axis of the stirring shaft, and the left end of the vacuum tube is connected to the stirring shaft via a chain drive.
[0013] Preferably, the outer wall of the vacuum tube is vertically connected with two rows of branch tubes, the two rows of branch tubes are 180° apart, the two rows of branch tubes are staggered, and the vertically downward branch tubes are distributed in the gaps of the outer edge of the spiral.
[0014] Preferably, the branch pipe wall has a pipe opening, and a red mud interception filter block is fixedly connected inside the pipe opening.
[0015] The beneficial effects of the present invention, which is adapted to a precise moisture content control device for red mud roadbed materials, are as follows: (1) The device for precise control of moisture content of red mud roadbed material of the present invention uses the quantitative feeding weighing conveyor and the twin-shaft high-power deagglomeration crusher in the feeding and primary crushing unit to break the red mud raw material into fine particles. The modulator in the core rheological mixing and moisture bidirectional intervention unit serves as the main processing chamber. The stirring structure formed by the spiral arrangement of blades and the spiral outer edge inside the chamber not only ensures the continuous propulsion and strong tumbling of the material in the chamber, but also provides the control center with the key basis for judging the rheological characteristics of the material by sensing the changes in stirring resistance in real time through the dynamic torque sensor. (2) The device for precise control of moisture content of red mud roadbed material adapted to this invention realizes "two-way precise intervention" of red mud moisture, fundamentally overcoming the defects of traditional methods that are difficult to penetrate into the material. When humidification is required, the ultrasonic atomizing nozzle in the humidification component generates fine mist droplets, which, together with the airflow provided by the high-pressure blower, allows the water mist to penetrate the dense pores between red mud particles with the airflow, effectively breaking through the surface tension limitation of water and avoiding the surface mud phenomenon caused by conventional watering. When dehydration is required, the microwave transmitter emits microwaves into the modulator through the transmitter docking arc plate, causing the water molecules inside the red mud to oscillate at high frequency and generate heat. Combined with the vacuum pump, the negative pressure environment built inside the material through the vacuum extraction pipe and branch extraction pipe reduces the boiling point of the water inside the modulator, allowing the water in the red mud to evaporate quickly, thus achieving rapid dehydration of the red mud. This microwave-negative pressure synergy allows the water wrapped inside the mud to be rapidly vaporized and extracted, completely solving the problem of surface crusting and internal water not being able to escape caused by traditional hot air drying, significantly improving dehydration efficiency and reducing the energy consumption for removing unit water. (3) In the device for precise control of moisture content of red mud roadbed material of the present invention, the control center integrates the incoming moisture signal of the feedforward moisture sensor, the instantaneous moisture signal of the feedback moisture sensor and the rheological characteristic signal of the dynamic torque sensor. Based on the preset parameter coupling model, PID calculation is performed. This model comprehensively considers the coupling relationship between material moisture content and rheology, and is supplemented by a time decay mechanism. It can accurately calculate and command the power of the microwave transmitter, the pumping rate of the vacuum pump, the humidification amount of the ultrasonic atomizing nozzle and the rotation speed of the stirring shaft. This enables the device to adaptively select the humidification or dehydration mode according to the real-time state of the red mud, and accurately control the intervention intensity, avoiding system misjudgment and output oscillation caused by local hard blocks or uneven moisture, and ensuring that the output moisture content is highly uniform. (4) In the precise moisture content control device for red mud roadbed materials of the present invention, the feed baffle and discharge baffle, under the control of the baffle push cylinder and the discharge push cylinder, realize the sealed treatment environment of the regulator, creating conditions for establishing negative pressure. The chain drive connection between the vacuum extraction pipe and the stirring shaft, as well as the precise distribution of the gap between the branch extraction pipe and the outer edge of the spiral, make the air extraction process and the material stirring process synchronous and non-interfering. The red mud is further stirred by the branch extraction pipe, and at the same time, the extraction pipe is inserted into the red mud, making close contact with the moisture in the red mud, thereby improving the moisture content control. In terms of drainage, as the branch extraction pipe rotates through the spirally arranged blades, it can break up the red mud adhering and clumping between the blades, preventing the red mud from clumping together. The red mud interception filter blocks set on the branch extraction pipe effectively prevent dust from entering the vacuum pipeline. Finally, the material after mixing and moisture intervention is stably discharged from the discharge channel through the spiral pusher, forming a complete and efficient red mud subgrade material moisture content control process. The moisture content variation coefficient of the produced red mud filler is extremely small, meeting the stringent specifications for high-grade highway subgrade construction. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 2 This is a schematic diagram of the structure of the device for precise control of moisture content of red mud roadbed material according to the present invention, viewed from the left. Figure 3 This is a structural schematic diagram from the bottom view of an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 4 This is a rear view structural schematic diagram of an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 5 This is a schematic diagram of the internal structure of the modulator in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 6This is a schematic diagram of the discharge baffle in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 7 This is a schematic diagram of the structure of the discharge baffle and microwave transmitter when they are separated in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 8 yes Figure 7 Front view structural diagram; Figure 9 This is a schematic diagram of the spiral-arranged blades in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 10 This is a schematic diagram of the discharge channel structure in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 11 This is a schematic diagram of the branch extraction pipe structure in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 12 This is a schematic diagram of the humidification component in an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; Figure 13 This is a schematic diagram of the unit distribution docking structure of an embodiment of the device for precise control of moisture content of red mud roadbed material according to the present invention; The attached figures are labeled as follows: 1. Quantitative feeding and weighing conveyor; 3. Twin-shaft high-power deagglomeration crusher; 4. Regulator; 401. Regulator feed hopper; 402. Baffle pusher cylinder; 403. Feed baffle; 404. Forced stirring motor; 405. Stirring shaft; 406. Spiral arranged blades; 407. Spiral outer edge; 408. Baffle guide port; 409. Emitter mounting port; 410. Discharge baffle; 411. Discharge pusher cylinder; 5. Microwave transmitter; 501. Emitter docking arc plate; 6. Vacuum pump; 601. Vacuum extraction tube; 602. 603. Branch pipe; 604. Pipe inlet; 7. Red mud interception filter block; 8. Humidification component; 705. Ultrasonic atomizing nozzle; 706. Water supply solenoid valve; 707. Airflow solenoid valve; 708. High-pressure blower; 9. Control center; 10. Discharge channel; 907. Channel inlet; 908. Discharge motor; 909. Screw pusher; 9000. Channel outlet; 11. Moisture detection component; 1001. Dynamic torque sensor; 1002. Feedback moisture sensor; 1003. Feedforward moisture sensor. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0018] Example 1: Please refer to Figures 1-13 : This invention provides a device for precise control of moisture content of red mud roadbed material, comprising: a feeding and primary crushing unit, a core rheological mixing and moisture bidirectional intervention unit, a moisture detection component 10, and a control center 8; The feeding and primary crushing unit includes: a quantitative feeding and weighing conveyor 1 and a twin-shaft high-intensity deagglomeration crusher 3, with the output end of the quantitative feeding and weighing conveyor 1 connected to the feed inlet of the twin-shaft high-intensity deagglomeration crusher 3; The core rheological mixing and moisture bidirectional intervention unit includes: a modulator 4, which is connected to the output port of the dual-shaft high-power deagglomeration crusher 3. The modulator 4 integrates a humidification component 7 and a microwave-negative pressure flash dehydration assembly. The microwave-negative pressure flash dehydration assembly includes a microwave transmitter 5 installed on the front wall of the modulator 4 and a vacuum pump 6 installed on the top of the modulator 4. The pipe of the vacuum pump 6 is connected to a vacuum extraction pipe 601 located inside the modulator 4 through a bearing and a sealing ring. A forced stirring motor 404 is installed on the right side of the modulator 4. The forced stirring motor 404 is connected to and drives a stirring shaft 405. The stirring shaft 405 is provided with spirally arranged blades 406. A dynamic torque sensor 1001 is installed between the forced stirring motor 404 and the stirring shaft 405. Moisture detection component 10 includes: dynamic torque sensor 1001, feedback moisture sensor 1002 installed on the inner wall of modulator 4, and feedforward moisture sensor 1003 installed at the discharge end of quantitative feeding weighing conveyor 1. Control Center 8: Electrically connected to the feeding and primary crushing unit, the core rheological mixing and moisture bidirectional intervention unit, and the moisture detection component 10, it performs PID closed-loop calculations based on a preset parameter coupling model and outputs execution commands. Through the coordinated operation of the quantitative feeding and weighing conveyor 1 and the twin-shaft high-power deagglomeration crusher 3 in the feeding and primary crushing unit, the red mud raw material is broken into fine particles. The modulator 4 in the core rheological mixing and moisture bidirectional intervention unit serves as the main processing chamber. The stirring structure formed by the spirally arranged blades 406 and the outer edge of the spiral 407 inside the chamber not only ensures the continuous propulsion and strong tumbling of the material, but also provides the control center 8 with key information for judging the rheological characteristics of the material by real-time sensing of the stirring resistance changes through the dynamic torque sensor 1001. The control center 8 integrates the feedforward moisture sensor 10 The incoming material moisture signal from 03, the real-time moisture signal from the feedback moisture sensor 1002, and the rheological characteristic signal from the dynamic torque sensor 1001 are used to perform PID calculations based on a preset parameter coupling model. This model comprehensively considers the coupling relationship between the material moisture content and rheological properties, and is supplemented by a time decay mechanism. It can accurately calculate and command the power of the microwave transmitter 5, the pumping rate of the vacuum pump 6, the humidification amount of the ultrasonic atomizing nozzle 701, and the rotation speed of the stirring shaft 405. This allows the device to adaptively select the humidification or dehydration mode according to the real-time state of the red mud, and precisely control the intervention intensity.
[0019] The modulator 4 has a modulating feed hopper 401 on its left side. A baffle pusher cylinder 402 is fixedly connected to the top of the modulator 4. A feed baffle 403 is longitudinally inserted into the modulating feed hopper 401. The push rod of the baffle pusher cylinder 402 is fixedly connected to the top of the feed baffle 403. By pushing and pulling the feed baffle 403, the baffle pusher cylinder 402 slides inside the modulating feed hopper 401, thereby closing and opening its opening.
[0020] The bottom of the modulator 4 is fixedly connected to the discharge channel 9, the top of the discharge channel 9 has an arc-shaped structure, and the spiral blades 406 are arranged in a spiral shape on the outer surface of the stirring shaft 405. The spiral blades 406 are fixedly connected to the outer surface of the spiral outer edge 407, which fits into the bottom of the modulator 4 and the arc surface above the discharge channel 9. Through the action of the spiral outer edge 407, the red mud adhering to the inner wall of the modulator 4 is scraped, and the red mud is stirred and turned over by the spiral blades 406, thereby improving the uniformity of red mud dehydration and humidification.
[0021] The humidification component 7 includes an ultrasonic atomizing nozzle 701 distributed inside the top of the modulator 4, and a water supply solenoid valve 702 and an airflow solenoid valve 703 connected to the ultrasonic atomizing nozzle 701 through a pipe. The input end of the airflow solenoid valve 703 is connected to a high-pressure blower 704, and the input end of the water supply solenoid valve 702 is connected to a water supply pipe. When humidification is required, the ultrasonic atomizing nozzle 701 in the humidification component 7 generates fine mist droplets, which, together with the airflow provided by the high-pressure blower 704, allow the water mist to penetrate the dense pores between the red mud particles with the airflow, effectively overcoming the surface tension limitation of water and avoiding the surface mudification phenomenon caused by conventional watering.
[0022] The modulator 4 has a transmitter mounting port 409 at its front, and the microwave transmitter 5 has an arc-shaped transmitter docking arc plate 501 at its rear, the arc surface of which matches the arc surface of the bottom of the modulator 4. A vacuum tube 601 is rotatably connected to the modulator 4 via a bearing. The axis of the vacuum tube 601 is parallel to the axis of the stirring shaft 405, and the left end of the vacuum tube 601 is connected to the stirring shaft 405 via a chain drive. Two rows of branch tubes 602 are vertically connected to the outer wall of the vacuum tube 601, with the two rows facing 180° apart and arranged in a staggered pattern. The vertically downward-facing branch tubes 602 are distributed along the spiral... Between the gaps of the outer edge 407; the branch extraction pipe 602 has an extraction pipe through-hole 603 on its wall, and a red mud interception filter block 604 is fixedly connected inside the extraction pipe through-hole 603; when dehydration is required, the microwave transmitter 5 emits microwaves into the modulator 4 through the transmitter docking arc plate 501, causing the water molecules inside the red mud to oscillate at high frequency and generate heat. Combined with the negative pressure environment built inside the material by the vacuum pump 6 through the vacuum extraction pipe 601 and the branch extraction pipe 602, the boiling point of the water inside the modulator 4 is reduced, so that the water in the red mud can evaporate quickly, realizing the rapid dehydration of the red mud. This microwave-negative pressure synergy allows the water wrapped inside the mud to be rapidly vaporized and extracted.
[0023] In Example 2, based on Example 1, a baffle guide 408 is provided on the rear wall of the modulator 4. A discharge baffle 410 is slidably connected inside the baffle guide 408. A discharge push cylinder 411 is fixedly connected to the rear of the modulator 4. The push rod of the discharge push cylinder 411 is fixedly connected to the discharge baffle 410. The discharge channel 9 is connected to the modulator 4 through a channel inlet 901 opened at its top. The discharge baffle 410 fits tightly against the channel inlet 901. A discharge motor 902 is fixedly connected to the left end of the discharge channel 9. A screw pusher 903 is rotatably connected inside the discharge channel 9 through a bearing. The discharge motor 902 is connected to and drives the screw pusher 903. A channel outlet 904 is opened at the bottom right end of the discharge channel 9. The discharge baffle 410 is pushed and pulled by the discharge push cylinder 411 to open and close the channel inlet 901. Finally, the material after mixing and moisture intervention is stably discharged from the discharge channel 9 through the screw pusher 903.
[0024] The working process and specific usage of the device for precise moisture content control of red mud roadbed materials according to the present invention are as follows: The red mud raw material is first precisely metered by the quantitative feeding and weighing conveyor 1 and then fed into the twin-shaft high-strength deagglomeration crusher 3. Here, it is forcibly deagglomerated and dispersed into fine particles, initially breaking the caking structure. The deagglomerated material enters the regulator 4, which is the core processing chamber, through the regulating feed hopper 401. At this time, the baffle pusher 402 drives the feed baffle 403 to close the feed port to establish a sealed environment. The forced stirring motor 404 inside the regulator 4 drives the stirring shaft 405 to rotate, driving the spiral blades. The plate 406 and the spiral outer edge 407 fixedly connected thereto continuously and intensely agitate the red mud. Simultaneously, the spiral outer edge 407 scrapes the inner wall of the cavity to prevent material adhesion. During this process, the feedforward moisture sensor 1003 transmits the initial moisture signal of the incoming material, the feedback moisture sensor 1002 transmits the real-time moisture signal within the cavity, and the dynamic torque sensor 1001 transmits the material rheological characteristic signal reflected by the agitation resistance, all synchronously to the control center 8. Based on a preset parameter coupling model, the control center 8 comprehensively considers the correlation between moisture and rheology, supplemented by a time decay mechanism, and accurately judges the results through PID closed-loop calculations. The system interrupts intervention requirements and outputs execution commands. When humidification is needed, the humidification component 7 is activated, the water supply solenoid valve 702 and the airflow solenoid valve 703 are opened, and the high-speed airflow generated by the high-pressure blower 704 carries the fine mist droplets generated by the ultrasonic atomizing nozzle 701, which powerfully penetrate the dense pores between the red mud particles to achieve deep and uniform humidification. When dehydration is needed, the microwave transmitter 5 emits microwaves into the cavity through the transmitter docking arc plate 501, causing the water molecules inside the red mud to oscillate at high frequency and generate self-heat. At the same time, the vacuum pump 6 is activated, and the vacuum extraction tube 601 and the branch extraction tube 602, driven by the chain drive of the stirring shaft 405, are used to extract water from the red mud. A negative pressure environment is created inside the material, and the red mud interception filter block 604 set on the branch extraction pipe 602 prevents red mud from being sucked in. Under the synergistic effect of microwave and negative pressure, the water wrapped inside the mud ball is quickly flashed into gas and extracted, achieving efficient dehydration from the inside out. After the moisture control reaches the standard, the discharge push cylinder 411 drives the discharge baffle 410 to open the channel inlet 901, and the processed material falls into the discharge channel 9. The spiral pusher 903 driven by the discharge motor 902 stably pushes it to the channel outlet 904 for discharge, thus fully realizing the intelligent and precise closed-loop control of the moisture content of the red mud roadbed material.
Claims
1. A device for precise moisture content control adapted to red mud roadbed materials, characterized in that, include: The feeding and primary crushing unit, the core rheological mixing and moisture bidirectional intervention unit, the moisture detection component (10) and the control center (8); The feeding and primary crushing unit includes: a quantitative feeding and weighing conveyor (1) and a twin-shaft high-intensity deagglomeration crusher (3), wherein the output end of the quantitative feeding and weighing conveyor (1) is connected to the feed inlet of the twin-shaft high-intensity deagglomeration crusher (3); The core rheological mixing and moisture bidirectional intervention unit includes: a modulator (4), which is connected to the output port of the dual-shaft high-power deagglomeration crusher (3). The modulator (4) integrates a humidification component (7) and a microwave-negative pressure flash dehydration assembly. The microwave-negative pressure flash dehydration assembly includes: a microwave transmitter (5) installed on the front wall of the modulator (4) and a vacuum pump (6) installed on the top of the modulator (4). The pipeline of the vacuum pump (6) is connected to a vacuum extraction pipe (601) located inside the modulator (4) through a bearing and a sealing ring. A forced stirring motor (404) is installed on the right side of the modulator (4). The forced stirring motor (404) is connected to and drives a stirring shaft (405). The stirring shaft (405) is provided with spiral blades (406). A dynamic torque sensor (1001) is installed between the forced stirring motor (404) and the stirring shaft (405). The moisture detection assembly (10) includes: a dynamic torque sensor (1001), a feedback moisture sensor (1002) installed on the inner wall of the modulator (4), and a feedforward moisture sensor (1003) installed at the discharge end of the quantitative feeding weighing conveyor (1). Control Center (8): Electrically connected to the feeding and primary crushing unit, the core rheological mixing and moisture bidirectional intervention unit, and the moisture detection component (10), performs PID closed-loop calculation based on the preset parameter coupling model and outputs execution instructions; The humidification component (7) includes an ultrasonic atomizing nozzle (701) distributed inside the top of the modulator (4) and a water supply solenoid valve (702) and an airflow solenoid valve (703) connected to the ultrasonic atomizing nozzle (701) through a pipe. The input end of the airflow solenoid valve (703) is connected to a high-pressure fan (704), and the input end of the water supply solenoid valve (702) is connected to a water supply pipe. The modulator (4) has a transmitter mounting port (409) in front, and the microwave transmitter (5) has a transmitter docking arc plate (501) with an arc surface structure behind it. The arc surface of the transmitter docking arc plate (501) matches the arc surface of the bottom surface of the modulator (4).
2. The device for precise moisture content control of red mud roadbed material according to claim 1, characterized in that, The modulator (4) is provided with a modulating feed hopper (401) on the left side. A baffle pusher cylinder (402) is fixedly connected to the top of the modulator (4). A feed baffle (403) is longitudinally inserted into the modulating feed hopper (401). The push rod of the baffle pusher cylinder (402) is fixedly connected to the top of the feed baffle (403).
3. The device for precise moisture content control of red mud roadbed material according to claim 1 or 2, characterized in that, The bottom of the modulator (4) is fixedly connected to the discharge channel (9), the top of the discharge channel (9) is an arc structure, the spiral blades (406) are arranged in a spiral shape on the outer surface of the stirring shaft (405), and the spiral blades (406) are fixedly connected to the outer edge of the spiral structure (407), the spiral outer edge (407) is attached to the bottom of the modulator (4) and the arc surface above the discharge channel (9).
4. The device for precise moisture content control of red mud roadbed materials according to claim 3, characterized in that, The modulator (4) has a baffle guide (408) on its rear wall. A discharge baffle (410) is slidably connected inside the baffle guide (408). A discharge push cylinder (411) is fixedly connected to the rear of the modulator (4). The push rod of the discharge push cylinder (411) is fixedly connected to the discharge baffle (410). The discharge channel (9) is connected to the modulator (4) through the channel inlet (901) opened at its top. The discharge baffle (410) fits tightly against the channel inlet (901).
5. The device for precise moisture content control of red mud roadbed material according to claim 3, characterized in that, The left end of the discharge channel (9) is fixedly connected to a discharge motor (902), and the inside of the discharge channel (9) is rotatably connected to a screw pusher (903) through a bearing. The discharge motor (902) is connected to and drives the screw pusher (903). The bottom right end of the discharge channel (9) is provided with a channel outlet (904).
6. The device for precise moisture content control of red mud roadbed material according to claim 1 or 2, characterized in that, The vacuum tube (601) is rotatably connected to the modulator (4) via a bearing. The axis of the vacuum tube (601) is parallel to the axis of the stirring shaft (405). The left end of the vacuum tube (601) is connected to the stirring shaft (405) via a chain drive.
7. The device for precise moisture content control of red mud roadbed material according to claim 1 or 2, characterized in that, The outer wall of the vacuum tube (601) is vertically connected to two rows of branch tubes (602). The two rows of branch tubes (602) are 180° apart and are arranged in an alternating manner. The branch tubes (602) in the vertical downward state are distributed in the gap between the outer edge (407) of the spiral.
8. The device for precise moisture content control of red mud roadbed material according to claim 7, characterized in that, The branch extraction pipe (602) has an extraction pipe opening (603) on its pipe wall, and a red mud interception filter block (604) is fixedly connected inside the extraction pipe opening (603).