High-strength steam-curing-free recycled concrete preparation device

Abstract

The invention relates to a high-strength steam-curing-free recycled concrete preparation device, and relates to the field of recycled concrete preparation devices, and the high-strength steam-curing-free recycled concrete preparation device comprises a material mixing barrel, an aggregate treatment assembly, a stirring barrel, a conveying belt, a heating curing assembly, a proportioning optimization system and other structures. The mixing barrel is used for mixing modified halloysite nanotubes and steel fibers, the aggregate treatment assembly is used for screening and coating aggregates, the stirring barrel is used for uniformly mixing multiple components, the conveyor belt is matched with the heating and curing assembly to complete the layered heating and hardening process of recycled concrete, and the proportioning optimization system is used for dynamically adjusting the proportion of each component to optimize the compactness. The effects of improving the strength of the recycled concrete, reducing the steam curing process and improving the production efficiency and the product quality stability are achieved.

Description

Technical Field

[0001] The present application relates to the field of recycled concrete preparation devices, and in particular to a high-strength steam-curing-free recycled concrete preparation device. Background Art

[0002] Recycled concrete, as an environmentally friendly building material, has garnered widespread attention in the construction industry in recent years. By utilizing industrial and construction waste as aggregate, recycled concrete not only effectively reduces natural resource consumption but also significantly lowers the construction industry's carbon emissions. Its significant value in the circular economy and sustainable development sectors offers new possibilities for achieving green buildings. With the continuous advancement of technology, the performance of recycled concrete is gradually approaching or even surpassing that of traditional concrete, making it a key development direction in the construction industry.

[0003] Currently, in the preparation of recycled concrete, the industry typically employs several methods to improve its strength and durability: first, improving the concrete's microstructure by adding mineral admixtures such as fly ash and slag; second, evenly dispersing reinforcing materials such as steel fibers throughout the concrete through mechanical mixing; third, simple aggregate screening to control particle size distribution; and fourth, promoting concrete hardening through natural or steam curing. Furthermore, some companies are attempting to further enhance concrete performance by optimizing mix parameters. However, these methods, which largely rely on traditional production processes, have limitations.

[0004] While the aforementioned methods can improve the performance of recycled concrete to a certain extent, practical applications still face challenges. For example, poor dispersion of reinforcing materials can lead to uneven microstructure within the concrete, compromising overall strength. Inadequate surface treatment of aggregates can weaken their bond with the cement matrix, leaving the interface transition zone as a weak link. Furthermore, traditional curing methods are energy-intensive and inefficient, making them difficult to meet the requirements for producing high-performance recycled concrete without steam curing. These issues have limited the promotion and use of recycled concrete in high-strength applications. Summary of the Invention

[0005] In order to improve the strength of recycled concrete, reduce the steam curing process, and improve production efficiency and product quality stability, the present application provides a high-strength steam-curing-free recycled concrete preparation device.

[0006] The present application provides a high-strength steam-curing-free recycled concrete preparation device, which adopts the following technical solutions: A high-strength, steam-free, recycled concrete preparation device comprises a mixing barrel, an aggregate processing component, a stirring barrel, a conveyor belt, a heating and curing component, a ratio optimization system, a detection and monitoring module and a first fixed frame. The mixing barrel and the stirring barrel are both fixedly connected to the first fixed frame. The lower end of the mixing barrel is connected to a first discharge pipe, which is used to mix modified halloysite nanotubes and steel fibers. The upper end of the stirring barrel is open, and the lower end of the stirring barrel is connected to a second discharge pipe. The lower end outlet of the first discharge pipe and the discharge port of the aggregate processing component both extend from the opening of the stirring barrel. The conveyor belt is located below the second discharge pipe. Several mold boxes are evenly arranged on the conveyor belt. The conveyor belt is used to transport the mold boxes filled with recycled concrete to the interior of the heating and curing component. The heating and curing component is used to heat the recycled concrete in layers to accelerate the hardening process. The ratio optimization system is used to dynamically adjust the proportions of the components of the recycled concrete to optimize the density. The detection and monitoring module is embedded in the ratio optimization system and connected through a data interface and is used to collect and analyze the performance parameters of the recycled concrete in real time.

[0007] By implementing the above technical solution, a comprehensive design for a high-strength, steam-curing-free recycled concrete production device has been achieved. This device uses a mixing drum to blend modified halloysite nanotubes and steel fibers. Aggregates are screened and modified using an aggregate processing assembly to ensure uniformity and consistent quality. A mixing drum further blends all components to form the recycled concrete. A conveyor belt, combined with a heating and curing assembly, achieves layered heating to accelerate the concrete hardening process. A mix optimization system dynamically adjusts the proportions of each component to optimize compactness, while a detection and monitoring module collects and analyzes performance parameters in real time to ensure the quality and stability of the recycled concrete. This overall solution effectively improves the strength and production efficiency of recycled concrete while reducing energy consumption.

[0008] Optionally, the upper end of the mixing barrel is connected to a first feed pipe and a second feed pipe, the upper end surface of the mixing barrel is fixedly connected to a first motor, the output end of the first motor is connected to a first stirring shaft, the stirring shaft is located inside the mixing barrel and is fixed with a plurality of first stirring blades along its own circumference and axial direction, and a first metering valve is provided on the first discharge pipe.

[0009] By adopting this technical solution, the mixing barrel is equipped with a first feed pipe and a second feed pipe, allowing for the separate addition of modified halloysite nanotubes and steel fibers, enabling precise control and independent addition of the two materials. A first motor drives the first stirring shaft, which in turn rotates the first stirring blades, thoroughly mixing the materials within the mixing barrel, ensuring uniform dispersion of the modified halloysite nanotubes and steel fibers, thereby improving the strength and stability of the recycled concrete. A first metering valve on the first discharge pipe precisely controls the output of the mixed material, preventing over- or under-dosing and ensuring the smooth progress of subsequent processes.

[0010] Optionally, a mounting plate is fixedly provided on the upper end of the mixing barrel, a second motor is fixedly provided on the upper end of the mounting plate, a second stirring shaft is coaxially provided in the mixing barrel, the second stirring shaft is fixedly connected to the output end of the second motor, the second stirring shaft is evenly fixed with a number of second stirring blades along its own circumference and axial direction, and a second metering valve is provided on the second discharge pipe.

[0011] By adopting this technical solution, efficient and uniform mixing of recycled concrete is achieved. The specific effects are as follows: The mounting plate provides a stable mounting base for the second motor, which drives the second stirring shaft. The second stirring blades on the second stirring shaft are evenly distributed circumferentially and axially, fully breaking up and mixing the materials in the mixing drum, significantly improving mixing effect and efficiency. The second metering valve ensures precise control of material output after mixing, thereby ensuring the accuracy of the recycled concrete mix ratio and further improving product quality and stability.

[0012] Optionally, the aggregate processing assembly includes a screening device, a coating assembly and a modified aggregate barrel. The screening equipment includes a barrel cover, several screen barrels and a vibration part arranged in sequence from top to bottom. The lower end of the vibration part is fixedly connected to a second fixed frame. The upper end of the barrel cover is provided with an aggregate feed port. The lower end of each screen barrel is provided with a screen hole. The screen apertures of the several screen barrels decrease in sequence from top to bottom. The side wall of each screen barrel is connected to an aggregate discharge pipe. The outlet of the aggregate discharge pipe is connected to the inlet of the coating assembly. The outlet of the coating assembly extends into the modified aggregate barrel. The lower end of the modified aggregate barrel is connected to a third discharge pipe. The third discharge pipe extends into the opening of the mixing barrel. The third discharge pipe is provided with a third metering valve.

[0013] By adopting the above technical solution, the aggregate processing component can achieve aggregate screening and coating, ensuring that the aggregate size meets the requirements and is evenly coated with the modified material. Specific effects include: the screening equipment uses multi-stage sieve buckets to grade the aggregate, with the sieve aperture decreasing from top to bottom, effectively separating aggregates of different particle sizes, improving the consistency of aggregate size, and thus enhancing the homogeneity and strength of the recycled concrete; the coating component evenly coats the screened aggregate, enhancing the surface properties of the aggregate and improving the bonding ability between the aggregate and the concrete matrix; the modified aggregate bucket collects the coated aggregate and quantitatively delivers it to the mixing bucket through a third discharge pipe, ensuring the precise and controllable amount of aggregate added, further optimizing the proportion and performance of the recycled concrete.

[0014] Optionally, the coating assembly includes a feed pipe and a coating pipe, both of which are arranged at an angle, one end of the feed pipe close to the screening device is higher than the other end of the feed pipe, a material receiving pipe is provided on the upper side of the end of the feed pipe close to the screening device, the material receiving pipe is sleeved on the outside of the aggregate discharge pipe, a first connecting pipe is provided on the lower side of the other end of the feed pipe, a fourth discharge pipe is provided on the lower side of the end of the coating pipe close to the modified aggregate barrel, a bracket is fixed on the first fixed frame, the outlet of the fourth discharge pipe passes through the bracket and extends into the modified aggregate barrel and is rotatably connected to the rotating plate along its own axis, a second connecting pipe is provided on the upper side of the other end of the coating pipe, the outlet of the first connecting pipe is inserted in the second connecting pipe, and the first connecting pipe is slidably and rotatably connected to the second connecting pipe along its own axis.

[0015] By adopting this technical solution, after screening, aggregate can enter the discharge pipe through the receiving pipe, and the discharge process is tilted, effectively preventing aggregate accumulation or blockage. The connection structure between the discharge pipe and the coating pipe is cleverly designed. The sliding and rotating connection between the first and second connecting pipes allows the coating pipe to be flexibly adjusted in position and angle to adapt to different working conditions. Finally, the processed aggregate is discharged from the fourth discharge pipe and into the modified aggregate barrel. The entire process is smooth and efficient, significantly improving the uniformity of the aggregate coating and the operational stability of the device.

[0016] Optionally, a swivel is provided on the outer wall of the second connecting pipe, and the swivel is rotatably connected to the second connecting pipe along its own axis. A hydraulic cylinder is rotatably connected to the upper end of the swivel, and the end of the hydraulic cylinder away from the swivel is rotatably connected to the outer wall of the discharge pipe. The rotation axes at both ends of the hydraulic cylinder are parallel to each other and perpendicular to the axis of the first connecting pipe.

[0017] By adopting the above technical solution, the rotary tube rotates around the axis of the second connecting tube, thereby driving the relative rotation between the hydraulic cylinder and the coating tube. The hydraulic cylinder can drive the relative sliding between the first connecting tube and the second connecting tube, changing the relative position between the discharge tube and the coating tube, so that the receiving tube can be connected to the aggregate discharge pipes of the screen barrel at different positions and heights.

[0018] Optionally, an end jet pipe is inserted into one end of the coating tube near the discharge tube, and a plurality of spray pipes are evenly inserted into the side wall of the coating tube along the circumference. The axial direction of the spray pipe is perpendicular to the axial direction of the coating tube, and a plurality of groups of barrel jet pipes are evenly inserted into the coating tube along its own axial direction. The number of each group is three and they are respectively located on the lower side, front side and rear side of the coating tube wall, and the barrel jet pipe is used to spray gas in the direction of the fourth discharge pipe.

[0019] By adopting the above technical solution, efficient and uniform spraying of aggregate surface modification treatment is achieved. The configuration of the end jet pipe ensures that the aggregate is initially dispersed when entering the coating pipe, avoiding agglomeration. Several spray pipes are evenly distributed along the circumference of the coating pipe, ensuring that the modifier can fully cover the aggregate surface and improve the coating effect. The design of multiple sets of barrel jet pipes further enhances the tumbling and dispersion of the aggregate during the coating process, allowing the modifier to fully contact the aggregate, thereby significantly improving the modified quality of the aggregate and providing a reliable material foundation for the subsequent preparation of high-strength steam-free recycled concrete.

[0020] Optionally, the heating and curing component includes a heating box and a microwave generator. The conveyor belt passes through the heating box. Several independently controlled heating areas are arranged in sequence along the conveying direction of the conveyor belt in the heating box. Each heating area is equipped with an independent temperature sensor and power regulator. The microwave generator is connected to the heating area through a power distributor.

[0021] By employing this technical solution, the microwave generator, combined with multiple independently controlled heating zones, achieves layered heating of recycled concrete. Temperature sensors and power regulators in each heating zone precisely control the temperature distribution during the heating process, ensuring optimal heating conditions at all depths of the recycled concrete, accelerating the hardening process and improving its strength. Furthermore, the design of a conveyor belt passing through the heating box allows for a continuous curing process, significantly improving production efficiency.

[0022] Optionally, the side walls of the mixing barrel, modified aggregate barrel and mixing barrel are all fixedly connected with a plurality of fixed blocks along their respective axial directions, and a mounting frame corresponding to the plurality of fixed blocks is fixed on the first fixed frame, and the fixed blocks are fixedly connected to the upper end surfaces of the corresponding mounting frames. The side walls of the mixing barrel, modified aggregate barrel and mixing barrel are not in contact with the first fixed frame, and a gravity sensor is provided in the fixed block, and the ratio optimization system is connected to the gravity sensor via a signal line.

[0023] By implementing this technical solution, the mixing tank, modified aggregate tank, and agitator are stably supported, preventing instability caused by vibration during operation. Furthermore, by installing a gravity sensor within the fixed block and transmitting the signal to the mix optimization system, changes in the weight of the materials within each container can be monitored in real time, allowing dynamic adjustments to the proportions of the recycled concrete components. This further improves the density and uniformity of the material, ensuring consistent product quality. The coordinated design of the fixed block and mounting bracket effectively isolates the equipment from direct contact, reducing wear and extending its service life.

[0024] Optionally, the detection and monitoring module further includes an analysis unit, which includes a data processing module for performing a comprehensive evaluation based on the collected data and outputting adjustment suggestions to ensure the product quality stability of the recycled concrete.

[0025] By implementing this technical solution, the detection and monitoring module incorporates an analysis unit and an internal data processing module. This allows for a comprehensive assessment of collected recycled concrete performance parameters and outputs adjustment recommendations. This helps monitor the status of recycled concrete in real time, promptly identifying factors that may affect product quality, and optimizing the production process through recommended adjustments, thereby ensuring the stability of recycled concrete product quality.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Pre-mixing of modified halloysite nanotubes and steel fibers in a mixing tank, combined with secondary mixing in a mixing tank, ensures full integration of all components, significantly improving the density and mechanical properties of recycled concrete. 2. The aggregate processing component realizes the integrated operation of aggregate grading, screening and surface coating, effectively improving the quality consistency of aggregates, thereby optimizing the overall performance of recycled concrete; 3. The heating and curing components adopt a layered heating method, combined with independently controlled heating areas and power adjustment functions, which greatly shortens the curing time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The diagram is a schematic diagram of the overall structure of a high-strength steam-curing-free recycled concrete preparation device.

[0028] Figure 2 It is a structural schematic diagram of the first motor, the first stirring shaft and the first stirring blade.

[0029] Figure 3 It is a schematic diagram of the structures of the mixing barrel, modified aggregate barrel and stirring barrel.

[0030] Figure 4 It is a structural diagram of the aggregate handling component.

[0031] Figure 5 It is a schematic diagram of the structure of the heating area.

[0032] Explanation of the reference numerals: 1. mixing barrel; 11. first discharge pipe; 111. first metering valve; 12. first feed pipe; 13. second feed pipe; 14. first motor; 15. first stirring shaft; 16. first stirring blade; 2. aggregate processing assembly; 21. screening equipment; 211. barrel cover; 2111. aggregate feed port; 212. screening barrel; 2121. aggregate discharge pipe; 213. vibration unit; 22. coating assembly; 221. feed pipe; 2211. receiving pipe; 2212. first connecting pipe; 222. coating pipe; 2221. fourth discharge pipe; 2222. second connecting pipe; 2223. swivel; 2224. hydraulic cylinder ; 2225, end jet pipe; 2226, spray pipe; 2227, barrel jet pipe; 23, modified aggregate barrel; 231, third discharge pipe; 2311, third metering valve; 3, mixing barrel; 31, second discharge pipe; 311, second metering valve; 32, mounting plate; 33, second motor; 34, second stirring shaft; 35, second stirring blade; 4, conveyor belt; 41, mold box; 5, heating and curing assembly; 51, heating box; 52, microwave generator; 53, heating area; 54, temperature sensor; 55, power regulator; 6, first fixed frame; 61, bracket; 62, mounting frame; 7, second fixed frame; 8, fixed block. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0034] The embodiment of the present application discloses a device for preparing high-strength steam-curing-free recycled concrete.

[0035] Reference Figure 1 A high-strength, steam-free recycled concrete preparation device includes a mixing drum 1, an aggregate processing assembly 2, a mixing drum 3, a conveyor belt 4, a heating and curing assembly 5, a mix ratio optimization system, a detection and monitoring module, and a first fixed frame 6. The mixing drum 1 mixes modified halloysite nanotubes and steel fibers, and the aggregate processing assembly 2 screens and modifies the aggregate to ensure the uniformity and quality stability of the raw materials. The mixing drum 3 further mixes all components to form the recycled concrete. The conveyor belt 4 cooperates with the heating and curing assembly 5 to achieve layered heating and accelerate the concrete hardening process. The mix ratio optimization system dynamically adjusts the proportions of each component to optimize density, and the detection and monitoring module collects and analyzes performance parameters in real time to ensure the quality and stability of the recycled concrete.

[0036] Reference Figure 1The mixing barrel 1 and the stirring barrel 3 are both fixedly connected to the first fixed frame 6. The upper end of the mixing barrel 1 is connected to a first feed pipe 12 and a second feed pipe 13. The first feed pipe 12 is used to add modified halloysite nanotubes, and the second feed pipe 13 is used to add steel fibers. The lower end of the mixing barrel 1 is connected to a first discharge pipe 11. The upper end of the stirring barrel 3 is open, and the lower end outlet of the first discharge pipe 11 extends into the opening of the stirring barrel 3. The first discharge pipe 11 is provided with a first metering valve 111. The first metering valve 111 can be an electric butterfly valve or a pneumatic ball valve. The discharge flow rate is controlled by adjusting the valve core opening to ensure that the mixed materials enter the stirring barrel 3 in a quantitative manner as required.

[0037] Reference Figure 2 The upper end surface of the mixing barrel 1 is fixedly connected to a first motor 14, and the output end of the first motor 14 is connected to a first stirring shaft 15. The stirring shaft is located inside the mixing barrel 1 and is fixed with a plurality of first stirring blades 16 along its own circumferential and axial directions. The first motor 14 drives the first stirring blade 16 to rotate through the first stirring shaft 15 to fully mix the modified halloysite nanotubes and steel fibers. The first stirring blade 16 can be spiral or flat, and made of stainless steel or aluminum alloy to ensure corrosion resistance and structural strength. The first stirring blade 16 is fixed to the first stirring shaft 15 by welding or bolting to ensure a firm connection and easy disassembly and maintenance.

[0038] Reference Figure 1 and Figure 3 A mounting plate 32 is fixedly provided at the upper end of the mixing barrel 3, and a second motor 33 is fixedly provided at the upper end of the mounting plate 32. A second stirring shaft 34 is coaxially provided in the mixing barrel 3, and the second stirring shaft 34 is fixedly connected to the output end of the second motor 33. The second stirring shaft 34 is evenly fixed with a number of second stirring blades 35 along its own circumferential and axial directions. The second motor 33 drives the second stirring shaft 34 to rotate, and the second stirring blades 35 on the second stirring shaft 34 are evenly distributed along the circumferential and axial directions, which can fully break up and mix the materials in the mixing barrel 3, significantly improving the stirring effect and efficiency. The second stirring blades 35 can be straight or spiral, and made of wear-resistant materials such as high manganese steel or ceramic-coated steel to meet the requirements of different aggregate particle sizes and hardness. The second stirring blades 35 are fixed to the second stirring shaft 34 by bolts, which is convenient for replacement and maintenance. The lower end of the mixing barrel 3 is connected to a second discharge pipe 31, and a second metering valve 311 is provided on the second discharge pipe 31. The second metering valve 311 can be a pneumatic gate valve or a hydraulic stop valve. The discharge amount of the recycled concrete is controlled by adjusting the valve plate opening to ensure that the mold box 41 on the conveyor belt 4 can be evenly filled.

[0039] Reference Figure 1 and Figure 4The aggregate processing assembly 2 includes a screening device 21, a coating assembly 22, and a modified aggregate barrel 23. The screening device 21 consists of a barrel cover 211, several screening barrels 212, and a vibrating unit 213, arranged sequentially from top to bottom. An aggregate feed port 2111 is provided at the top of the barrel cover 211, through which the crushed aggregate enters. The screening barrels 212 are arranged sequentially from top to bottom. Aggregates are graded and screened through the multiple-stage screening barrels 212. The screen aperture decreases from top to bottom, effectively separating aggregates of different particle sizes and improving the consistency of aggregate size. An aggregate discharge pipe 2121 is connected to the sidewall of each screening barrel 212. The outlet of the aggregate discharge pipe 2121 is connected to the inlet of the coating assembly 22. Aggregates of different sizes are selected according to process requirements. The inlet of the coating assembly 22 is connected to the corresponding aggregate discharge pipe 2121. The aggregate discharge pipes 2121 of other screening barrels 212 can be blocked with a cap. The vibration part 213 is used to drive the screen barrel 212 to vibrate, and an eccentric wheel vibration mechanism or an electromagnetic vibration mechanism can be used. The vibration frequency and amplitude can be controlled by adjusting the mass distribution of the eccentric wheel or the current of the electromagnetic coil.

[0040] Reference Figure 1 and Figure 4 The coating assembly 22 includes a feed pipe 221 and a coating pipe 222, both of which are arranged at an angle. The end of the feed pipe 221 near the screening device 21 is higher than the other end of the feed pipe 221. A material receiving pipe 2211 is provided on the upper side of the end of the feed pipe 221 near the screening device 21. The material receiving pipe 2211 is sleeved outside the aggregate discharge pipe 2121. A first connecting pipe 2212 is provided on the lower side of the other end of the feed pipe 221. After screening, the aggregate can enter the feed pipe 221 through the material receiving pipe 2211. During the feeding process, the aggregate is transported at an angle and enters the coating pipe 222 through the first connecting pipe 2212 and the second connecting pipe 2222, effectively preventing aggregate accumulation or blockage. A fourth discharge pipe 2221 is provided on the lower side of one end of the coating tube 222 close to the modified aggregate barrel 23, and a bracket 61 is fixed on the first fixed frame 6. The outlet of the fourth discharge pipe 2221 passes through the bracket 61 and extends into the modified aggregate barrel 23 and is rotatably connected to the rotating plate along its own axis. A second connecting pipe 2222 is provided on the upper side of the other end of the coating tube 222, and the outlet of the first connecting pipe 2212 is inserted into the second connecting pipe 2222. The first connecting pipe 2212 is slidably and rotatably connected to the second connecting pipe 2222 along its own axis.

[0041] Reference Figure 4The outer wall of the second connecting tube 2222 is provided with a swivel 2223, which is rotatably connected to the second connecting tube 2222 along its own axis. A hydraulic cylinder 2224 is rotatably connected to the upper end of the swivel 2223. The end of the hydraulic cylinder 2224, which is away from the swivel 2223, is rotatably connected to the outer wall of the discharge tube 221. The rotation axes of the hydraulic cylinder 2224 at both ends are parallel to each other and perpendicular to the axis of the first connecting tube 2212. The swivel 2223 rotates about the axis of the second connecting tube 2222, thereby driving the relative rotation between the hydraulic cylinder 2224 and the coating tube 222. The hydraulic cylinder 2224 can drive the relative sliding between the first connecting tube 2212 and the second connecting tube 2222, changing the relative vertical position between the discharge tube 221 and the coating tube 222, so that the receiving tube 2211 can be connected to the aggregate discharge tube 2121 at different positions and heights of the sieve barrel 212.

[0042] Reference Figure 3 The lower end of the modified aggregate barrel 23 is connected to a third discharge pipe 231, which extends into the opening of the mixing barrel 3. A third metering valve 2311 is installed on the third discharge pipe 231. This valve can be an electric regulating valve or a manual needle valve. Adjusting the valve stem position controls the discharge volume of the modified aggregate, ensuring the precise ratio of the aggregate to the other components.

[0043] Reference Figure 4 An end jet pipe 2225 is inserted into the end of the coating tube 222 near the discharge tube 221. The provision of the end jet pipe 2225 ensures that the aggregate is initially dispersed when entering the coating tube 222, avoiding agglomeration, and pushes the aggregate toward the fourth discharge tube 2221. Several spray pipes 2226 are evenly inserted into the side wall of the coating tube 222 along the circumference. The axis of the spray pipe 2226 is perpendicular to the axis of the coating tube 222. Several groups of barrel jet pipes 2227 are evenly inserted into the coating tube 222 along its own axis. Each group has three barrel jet pipes 2227 located on the lower side, front side, and rear side of the barrel wall of the coating tube 222. The barrel jet pipes 2227 are used to spray gas toward the fourth discharge tube 2221. Several spray tubes 2226 are evenly distributed around the coating tube 222, ensuring that the modifier fully covers the aggregate surface and improving the coating effect. The design of multiple sets of barrel jet tubes 2227 further enhances the tumbling and dispersion of the aggregate during the coating process, ensuring full contact between the modifier and the aggregate, significantly improving the modified quality of the aggregate and providing a reliable material foundation for the subsequent preparation of high-strength, steam-cured recycled concrete. The barrel jet tubes 2227 also push the aggregate toward the fourth discharge tube 2221. The absence of barrel jet tubes 2227 on the upper side prevents the aggregate from being pushed onto the lower inner wall, preventing the lower side from being sprayed.

[0044] Reference Figure 1The conveyor belt 4 is located below the second discharge pipe 31. Several mold boxes 41 are evenly distributed on the conveyor belt 4. Recycled concrete is injected into the mold boxes 41 to produce the desired shape. The conveyor belt 4 is used to transport the mold boxes 41 filled with recycled concrete to the interior of the heating and curing assembly 5. The heating and curing assembly 5 is used to heat the recycled concrete in layers to accelerate the hardening process. The mix optimization system is used to dynamically adjust the proportions of the recycled concrete components to optimize density. The detection and monitoring module is embedded in the mix optimization system and connected via a data interface. It is used to collect and analyze the performance parameters of the recycled concrete in real time, thereby improving the quality of the recycled concrete and enhancing production efficiency.

[0045] Reference Figure 1 and Figure 5 The heating and curing assembly 5 includes a heating box 51 and a microwave generator 52. Within the heating box 51, several independently controlled heating zones 53 are arranged in sequence along the conveyor belt 4. Each heating zone 53 is equipped with an independent temperature sensor 54 and power regulator 55. The microwave generator 52 is connected to the heating zones 53 via a power distributor. The temperature sensor 54 can be a thermocouple or infrared thermometer, and the power regulator 55 can be a thyristor or pulse-width modulation circuit to achieve precise temperature control of each heating zone 53. The microwaves generated by the microwave generator 52 can penetrate deep into the concrete, heating the concrete both inside and outside, significantly improving heating efficiency and curing speed.

[0046] Reference Figure 1 and Figure 3 The side walls of the mixing barrel 1, the modified aggregate barrel 23 and the mixing barrel 3 are all fixedly connected with a number of fixed blocks 8 along their respective axial directions. A mounting frame 62 corresponding to the number of fixed blocks 8 is fixed on the first fixed frame 6. The fixed block 8 is fixedly connected to the upper end surface of the corresponding mounting frame 62. The side walls of the mixing barrel 1, the modified aggregate barrel 23 and the mixing barrel 3 are not in contact with the first fixed frame 6. A gravity sensor is provided in the fixed block 8, and the ratio optimization system is connected to the gravity sensor via a signal line. The fixed block 8 is fixed to the mounting frame 62 by bolts or snaps to ensure structural stability and easy disassembly and maintenance. The gravity sensor is used to monitor the weight of the materials in the mixing barrel 1, the modified aggregate barrel 23 and the mixing barrel 3 in real time. The ratio optimization system dynamically adjusts the proportion of each component according to the weight data to ensure the accuracy and stability of the concrete ratio.

[0047] The detection and monitoring module also includes an analysis unit, which is equipped with a data processing module for conducting a comprehensive evaluation based on the collected data and outputting adjustment suggestions to ensure the stability of the recycled concrete product quality.

[0048] The working principle of the high-strength, steam-free recycled concrete preparation device in this application embodiment is as follows: modified halloysite nanotubes and steel fibers are mixed in a mixing drum 1, and the aggregate is screened and modified in conjunction with an aggregate processing assembly 2 to ensure the uniformity and quality stability of the raw materials. A stirring drum 3 further mixes all components to form recycled concrete. A conveyor belt 4 cooperates with a heating and curing assembly 5 to achieve layered heating, accelerating the concrete hardening process. A ratio optimization system dynamically adjusts the proportions of each component to optimize density, and a detection and monitoring module collects and analyzes performance parameters in real time to ensure the quality stability of the recycled concrete. The overall solution effectively improves the strength and production efficiency of recycled concrete while reducing energy consumption.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high-strength autoclaved recycled concrete preparation device, characterized by: The invention comprises a mixing barrel (1), an aggregate processing component (2), a stirring barrel (3), a conveyor belt (4), a heating and curing component (5), a ratio optimization system, a detection and monitoring module and a first fixed frame (6), wherein the mixing barrel (1) and the stirring barrel (3) are both fixedly connected to the first fixed frame (6), the lower end of the mixing barrel (1) is connected to a first discharge pipe (11), and the mixing barrel (1) is used for mixing modified halloysite nanotubes and steel fibers, the upper end of the stirring barrel (3) is open, and the lower end of the stirring barrel (3) is connected to a second discharge pipe (31), and the lower end outlet of the first discharge pipe (11) and the discharge port of the aggregate processing component (2) are both The conveyor belt (4) extends from the opening of the mixing barrel (3), is located below the second discharge pipe (31), and a plurality of mold boxes (41) are evenly arranged on the conveyor belt (4). The conveyor belt (4) is used to transport the mold boxes (41) filled with recycled concrete to the interior of the heating and curing component (5). The heating and curing component (5) is used to heat the recycled concrete in layers to accelerate the hardening process. The ratio optimization system is used to dynamically adjust the ratio of each component of the recycled concrete to optimize the density. The detection and monitoring module is embedded in the ratio optimization system and is connected through a data interface and is used to collect and analyze the performance parameters of the recycled concrete in real time.

2. The high-strength autoclaved recycled concrete preparation device according to claim 1, characterized in that: The upper end of the mixing barrel (1) is connected to a first feed pipe (12) and a second feed pipe (13); the upper end surface of the mixing barrel (1) is fixedly connected to a first motor (14); the output end of the first motor (14) is connected to a first stirring shaft (15); the stirring shaft is located inside the mixing barrel (1) and is fixedly provided with a plurality of first stirring blades (16) along its circumferential and axial directions; and a first metering valve (111) is provided on the first discharge pipe (11).

3. The high-strength autoclaved recycled concrete preparation device according to claim 1, characterized in that: A mounting plate (32) is fixedly provided at the upper end of the mixing barrel (3), a second motor (33) is fixedly provided at the upper end of the mounting plate (32), a second mixing shaft (34) is coaxially provided in the mixing barrel (3), the second mixing shaft (34) is fixedly connected to the output end of the second motor (33), a plurality of second mixing blades (35) are uniformly fixedly provided on the second mixing shaft (34) along its circumferential and axial directions, and a second metering valve (311) is provided on the second discharge pipe (31).

4. The high-strength autoclaved recycled concrete preparation device according to claim 1, characterized in that: The aggregate processing assembly (2) comprises a screening device (21), a coating assembly (22) and a modified aggregate barrel (23). The screening device (21) comprises a barrel cover (211), a plurality of screening barrels (212) and a vibration part (213) arranged in sequence from top to bottom. The lower end of the vibration part (213) is fixedly connected to a second fixing frame (7). The upper end of the barrel cover (211) is provided with an aggregate feeding port (2111). The lower end of each screening barrel (212) is provided with a sieve hole. The aperture of the screen decreases from top to bottom. The side wall of each screen barrel (212) is connected to an aggregate discharge pipe (2121). The outlet of the aggregate discharge pipe (2121) is connected to the inlet of the coating assembly (22). The outlet of the coating assembly (22) extends into the modified aggregate barrel (23). The lower end of the modified aggregate barrel (23) is connected to a third discharge pipe (231). The third discharge pipe (231) extends into the opening of the mixing barrel (3). A third metering valve (2311) is provided on the third discharge pipe (231).

5. The high-strength autoclaved recycled concrete preparation device according to claim 4, characterized in that: The coating assembly (22) includes a feed pipe (221) and a coating pipe (222), both of which are arranged at an angle. One end of the feed pipe (221) close to the screening device (21) is higher than the other end of the feed pipe (221). A receiving pipe (2211) is provided on the upper side of the end of the feed pipe (221) close to the screening device (21). The receiving pipe (2211) is sleeved on the outside of the aggregate discharge pipe (2121). A first connecting pipe (2212) is provided on the lower side of the other end of the feed pipe (221). The coating pipe (222) is close to the modified A fourth discharge pipe (2221) is provided on the lower side of one end of the modified aggregate barrel (23), a bracket (61) is fixed on the first fixed frame (6), an outlet of the fourth discharge pipe (2221) passes through the bracket (61) and extends into the modified aggregate barrel (23) and is rotatably connected to the rotating plate along its own axis, a second connecting pipe (2222) is provided on the upper side of the other end of the coating pipe (222), an outlet of the first connecting pipe (2212) is inserted into the second connecting pipe (2222), and the first connecting pipe (2212) is slidably connected and rotatably connected to the second connecting pipe (2222) along its own axis.

6. The high-strength autoclaved recycled concrete preparation device according to claim 5, characterized in that: The outer wall of the second connecting tube (2222) is provided with a swivel (2223), and the swivel (2223) is rotatably connected to the second connecting tube (2222) along its own axis. The upper end of the swivel (2223) is rotatably connected to a hydraulic cylinder (2224), and one end of the hydraulic cylinder (2224) away from the swivel (2223) is rotatably connected to the outer wall of the discharge tube (221), and the rotation axes of the two ends of the hydraulic cylinder (2224) are parallel to each other and perpendicular to the axis of the first connecting tube (2212).

7. The high-strength autoclaved recycled concrete preparation device according to claim 4, characterized in that: An end jet pipe (2225) is inserted into one end of the coating tube (222) close to the discharge tube (221), and a plurality of spray pipes (2226) are uniformly inserted into the side wall of the coating tube (222) along the circumferential direction. The axial direction of the spray pipe (2226) is perpendicular to the axial direction of the coating tube (222). The coating tube (222) is uniformly inserted with a plurality of groups of barrel jet pipes (2227) along its own axial direction, with each group having three barrel jet pipes and being respectively located on the lower side, front side and rear side of the barrel wall of the coating tube (222). The barrel jet pipes (2227) are used to spray gas in the direction of the fourth discharge tube (2221).

8. The high-strength autoclaved recycled concrete preparation device according to claim 1, characterized in that: The heating and curing assembly (5) includes a heating box (51) and a microwave generator (52). The conveyor belt (4) passes through the heating box (51). Several independently controlled heating areas (53) are arranged in sequence along the conveying direction of the conveyor belt (4) in the heating box (51). Each heating area (53) is equipped with an independent temperature sensor (54) and a power regulator (55). The microwave generator (52) is connected to the heating area (53) through a power distributor.

9. The high-strength autoclaved recycled concrete preparation device according to claim 4, characterized in that: The side walls of the mixing barrel (1), the modified aggregate barrel (23) and the mixing barrel (3) are all fixedly connected with a plurality of fixed blocks (8) along their respective axial directions. A first fixed frame (6) is fixedly provided with mounting frames (62) corresponding to the plurality of fixed blocks (8). The fixed blocks (8) are fixedly connected to the upper end surfaces of the corresponding mounting frames (62). The side walls of the mixing barrel (1), the modified aggregate barrel (23) and the mixing barrel (3) are not in contact with the first fixed frame (6). A gravity sensor is provided in the fixed block (8), and the ratio optimization system is connected to the gravity sensor via a signal line.

10. The high-strength autoclaved recycled concrete preparation device according to claim 1, characterized in that: The detection and monitoring module also includes an analysis unit, which is internally provided with a data processing module for performing a comprehensive evaluation based on the collected data and outputting adjustment suggestions to ensure the product quality stability of the recycled concrete.

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