Microbial modified recycled concrete mixing reaction all-in-one machine based on biological enzyme catalysis

Abstract

The utility model provides a microorganism modified recycled concrete mixing reaction all-in-one machine based on bio-enzyme catalysis, which relates to the technical field of recycled concrete processing and comprises a mixing base and a mixing barrel, the mixing barrel is arranged on the top surface of the mixing base, a telescopic barrel is arranged at the top of the mixing barrel, and a guide barrel is connected to the top surface of the telescopic barrel. A mounting lug is arranged at the joint position of the guide barrel and the telescopic barrel, an adjusting hydraulic cylinder is vertically arranged on the top surface of the mixing base, the movable end of the adjusting hydraulic cylinder is connected with the bottom surface of the mounting lug, the top end of the guide barrel is in threaded connection with a sealing cover, a motor base is arranged on the top surface of the sealing cover, a mixing motor is arranged in the motor base, and a mixing assembly is arranged in the mixing barrel; the height of the device is flexibly changed according to different scenes, so that under the environment of a small scientific research laboratory, limited operation space is adapted, material loss and feeding disorder are reduced, and accurate implementation of an experimental material mixing link is guaranteed; and in a large-scale industrial production scene, the application range of equipment is widened, so that the equipment can adapt to different production scales and site conditions.

Description

Technical Field

[0001] This utility model relates to the field of recycled concrete processing technology, and in particular to an integrated machine for mixing and reacting microbially modified recycled concrete based on bio-enzyme catalysis. Background Technology

[0002] According to Chinese Publication No. CN117225522A, a multi-functional crushing device for recycled concrete aggregates relates to the field of recycled concrete aggregate processing equipment. It includes a base, a support platform above the base, and a sorting mechanism below the support platform for sorting crushed concrete aggregates of different sizes. A vibration mechanism is also located above the base. This multi-functional crushing device for recycled concrete aggregates, through the coordinated arrangement of the base, support platform, sorting mechanism, and vibration mechanism, enables the equipment to sort aggregates of different sizes obtained after crushing waste concrete. This effectively avoids the situation where the quality of recycled concrete is affected by the direct mixing of fine and coarse aggregates after crushing, while effectively ensuring that the recycled concrete achieves its expected results during use.

[0003] The aforementioned patent documents and prior art have the following technical problems:

[0004] 1. Existing recycled concrete mixing equipment is usually designed with a fixed height, which makes it difficult to adapt to the needs of different scenarios. In small scientific research laboratories, due to limited space, large fixed-height equipment cannot be installed, and the feeding process cannot be optimized, which often leads to material loss and feeding chaos, affecting the accuracy of experimental mixing; while in large industrial production sites, facing the need for large-scale material feeding and efficient mixing, the height limitation of ordinary equipment makes it impossible to feed quickly, which restricts production efficiency.

[0005] 2. Traditional recycled concrete mixing methods often employ simple mixing structures, making it difficult to achieve comprehensive and multi-layered mixing of materials. Bio-enzymes and microorganisms cannot fully contact the recycled concrete raw materials, resulting in a small reaction contact area. Large particles are difficult to break down and refine, often leading to mixing dead zones and inconsistent product quality. Quality differences caused by uneven mixing are frequent.

[0006] 3. Traditional mixing equipment lacks efficient mixing methods, resulting in lengthy material mixing times when processing recycled concrete. This is especially true for components such as enzymes and microorganisms that require rapid and uniform dispersion, as ordinary mixing methods struggle to allow them to quickly penetrate the pores of concrete particles. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies in the mixing of recycled concrete, such as poor equipment versatility, poor mixing uniformity, and low mixing efficiency. This invention proposes an integrated reaction machine for microbial modified recycled concrete mixing based on bio-enzyme catalysis.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a microbial modified recycled concrete mixing and reaction integrated machine based on bio-enzyme catalysis, comprising a mixing base and a mixing barrel. The mixing base has a mixing barrel on its top surface, a telescopic barrel on the top of the mixing barrel, a guide barrel connected to the top surface of the telescopic barrel, and an mounting ear on the outside of the joint between the guide barrel and the telescopic barrel. An adjusting hydraulic cylinder is vertically provided on the top surface of the mixing base, and the movable end of the adjusting hydraulic cylinder is connected to the bottom surface of the mounting ear. A sealing cover is threadedly connected to the top of the guide barrel, a motor base is provided on the top surface of the sealing cover, a mixing motor is provided inside the motor base, and a mixing assembly is provided inside the mixing barrel.

[0009] Preferably, the mixing assembly includes a three-dimensional mixing shaft and an adjusting sleeve shaft. An adjusting spring is provided inside the adjusting sleeve shaft. The top end of the adjusting spring is connected to the bottom end of the three-dimensional mixing shaft, and the outer edge of the three-dimensional mixing shaft is slidably engaged with the inner wall of the adjusting sleeve shaft.

[0010] Preferably, a drive motor is embedded in the bottom surface of the mixing barrel, and a suction impeller is connected to the output shaft end of the drive motor. The bottom surface of the suction impeller is coplanar with the bottom surface of the mixing barrel. A guide bearing is provided at the center of the top surface of the suction impeller. A bearing groove is opened on the bottom surface of the adjusting sleeve shaft, and the inner wall of the bearing groove is engaged with the outer wall of the guide bearing.

[0011] Preferably, the three-dimensional mixing shaft is provided with an arc-shaped blade near the top, the end of the three-dimensional mixing shaft near the adjusting sleeve shaft is provided with a bent blade, and the outer surface of the adjusting sleeve shaft is provided with a propeller blade.

[0012] Preferably, the top of the three-dimensional mixing shaft has an I-shaped limiting groove on its vertical circumference, the end of the arc-shaped blade is vertically engaged with the I-shaped limiting groove, and the three-dimensional mixing shaft has a T-shaped annular groove on its circumference near the bottom, the bent blade is distributed along the circumference of the T-shaped annular groove, and the end of the bent blade is engaged with the inside of the T-shaped annular groove.

[0013] Preferably, the top of the three-dimensional mixing shaft is provided with a motor clamping block, and the bottom end and inner wall of the motor clamping block are clearance-fitted with the top of the three-dimensional mixing shaft, and the top of the motor clamping block is connected to the output shaft of the mixing motor.

[0014] Preferably, the sealing cap has a feed inlet on its surface, and the mixing tank has a discharge pipe on its side near the bottom.

[0015] Preferably, the vertical axis of the mixing motor coincides with the vertical axis of the three-dimensional mixing shaft, and the vertical center axis of the three-dimensional mixing shaft, the vertical centerline axis of the adjusting sleeve shaft, the vertical center axis of the suction impeller, and the vertical center axis of the drive motor all coincide with each other.

[0016] Beneficial effects

[0017] This invention employs a height adjustment system composed of an adjustable hydraulic cylinder, a telescopic barrel, and a guide barrel. This system allows for flexible adjustment of the device height according to different scenarios. In small scientific research laboratory environments, it adapts to limited operating spaces, optimizes the material feeding process, reduces material loss and feeding chaos, and ensures accurate implementation of experimental mixing. In large-scale industrial production scenarios, it meets the needs for rapid feeding and efficient mixing of large quantities of materials, broadening the application range of the equipment and enabling it to adapt to different production scales and site conditions.

[0018] In this invention, a three-dimensional mixing shaft and multi-layer blades work together. The surface of the three-dimensional mixing shaft is arranged with arc-shaped blades, bent blades and propeller blades from high to low to perform mixing and stirring. This multi-layer stirring allows for all-round and multi-level stirring of the materials, achieving fine mixing of the materials. It promotes full contact between biological enzymes, microorganisms and recycled concrete raw materials, increases the reaction contact area, deeply refines the materials, breaks up large particles, strengthens the fusion of various components, eliminates mixing dead zones, ensures uniform mixing of materials, improves product uniformity, effectively reduces quality differences caused by uneven mixing, and stabilizes product quality.

[0019] This invention employs a structure in which a suction impeller rotates at high speed under the drive of a motor. Based on the principles of fluid mechanics, a low-pressure zone is created at the bottom of the mixing tank, forming a powerful vortex flow that quickly attracts the material above to the core of the bottom vortex. This significantly shortens the material mixing time, causing the entrained material to move in a high-speed circular motion under the tangential force of the impeller. The frequency of collisions and friction between materials increases significantly, accelerating the diffusion and penetration of biological enzymes and microorganisms in concrete particles, improving the overall mixing efficiency, and providing strong support for the rapid production of high-quality microbial modified recycled concrete. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a front sectional view of the present invention;

[0022] Figure 3 This is a structural diagram of the mixing tank of this utility model;

[0023] Figure 4 This is a diagram showing the internal structure of the telescopic bucket of this utility model after folding.

[0024] Figure 5 This is an exploded structural diagram of the mixing component of this utility model;

[0025] Figure 6 This is a structural diagram of the mixing component of this utility model.

[0026] Legend:

[0027] 1. Mixing base; 2. Mixing bucket; 3. Telescopic bucket; 4. Guide bucket; 5. Mounting ear; 6. Adjusting hydraulic cylinder; 7. Sealing cover; 8. Motor base; 9. Mixing motor; 10. Motor clamp; 11. Discharge pipe; 12. Feed inlet; 13. Mixing assembly; 1301. Three-dimensional mixing shaft; 1302. Adjusting sleeve shaft; 1303. Bearing groove; 1304. I-shaped limiting groove; 1305. T-shaped ring groove; 1306. Adjusting spring; 1307. Arc-shaped blade; 1308. Bending blade; 1309. Propeller blade; 14. Suction impeller; 15. Drive motor; 16. Guide bearing. Detailed Implementation

[0028] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0031] Reference Figures 1 to 6 The integrated mixing and reaction machine for microbial modified recycled concrete based on bio-enzyme catalysis includes a mixing base 1 and a mixing drum 2. The mixing drum 2 is located on the top surface of the mixing base 1, and a telescopic drum 3 is located on the top of the mixing drum 2. A guide drum 4 is connected to the top surface of the telescopic drum 3. An installation ear 5 is provided on the outside of the joint between the guide drum 4 and the telescopic drum 3. An adjusting hydraulic cylinder 6 is vertically installed on the top surface of the mixing base 1, and the movable end of the adjusting hydraulic cylinder 6 is connected to the bottom surface of the installation ear 5. The mixing base 1 serves as the foundation of the entire device, providing stable support and bearing the gravitational load from all components such as the mixing drum 2, the telescopic drum 3, the guide drum 4, the motor, and the materials, ensuring that the device will not tip over due to instability during operation and guaranteeing production safety.

[0032] The mixing tank 2 provides a closed and suitable reaction space for bio-enzymes, microorganisms, and recycled concrete raw materials, ensuring that the materials undergo modification reactions under thorough mixing, while preventing material splashing and leakage, meeting environmental protection and process requirements. It is generally made of corrosion-resistant, high-strength materials, such as stainless steel, and the smooth inner tank wall reduces material adhesion. Its shape design is based on fluid mechanics principles, and it is commonly cylindrical or slightly tapered, which facilitates the flow and circulation of materials during the mixing process and promotes uniform mixing.

[0033] The telescopic barrel 3, serving as a transitional component between the mixing barrel 2 and the guide barrel 4, works in conjunction with the adjusting hydraulic cylinder 6 to dynamically adjust the device height. It also provides initial material gathering and buffering, ensuring more even material flow into the mixing barrel 2 and improving feeding stability. Its material is similar to or slightly thinner than that of the mixing barrel 2, possessing a degree of flexibility to accommodate slight deformation during height changes. The internal space is designed as a funnel shape, wider at the top and narrower at the bottom. After flowing into the guide barrel 4, the material accelerates towards the mixing barrel 2 under the guidance of gravity and the barrel wall, and to a certain extent, prevents large particles from directly impacting the bottom of the mixing barrel 2. During operation, the hydraulic cylinder 6 is adjusted to extend and retract, moving the telescopic barrel 3 up and down according to material characteristics, throughput, or site height limitations, changing the overall vertical dimensions of the device. Material continuously flows from the guide barrel 4, buffered by the telescopic barrel 3, and then stably flows into the mixing barrel 2. This enhances the device's adaptability to different working conditions, allowing for flexible height adjustment and optimized feeding processes in both small-scale laboratory research and development and large-scale industrial production. It reduces material blockage and splashing, ensuring continuous mixing.

[0034] The guide bucket 4 provides precise guidance for the material entering the device, ensuring that the material fed from the inlet 12 falls smoothly and vertically into the telescopic bucket 3, preventing material scattering and deviation, and improving feeding accuracy. Simultaneously, its external mounting ears 5 are connected to the adjusting hydraulic cylinder 6, realizing the mechanical transmission of the device's height adjustment function. It is made of lightweight, high-strength materials, such as aluminum alloy, with a smooth straight tube structure inside. Utilizing gravity and the constraint of the tube wall, the material slides down a straight trajectory. The mounting ears 5 are designed on the outside of the joint position and are connected to the moving end of the adjusting hydraulic cylinder 6 via pins or bolts, enabling the linear movement of the hydraulic cylinder. The process is transformed into the lifting and lowering motion of the guide barrel 4 and the entire upper structure. During the feeding process, after the material is put into the feed port 12 of the sealing cover 7, it falls freely inside the guide barrel 4. The friction of the pipe wall is minimal, ensuring that the material reaches the telescopic barrel 3 quickly and accurately. When it is necessary to adjust the height of the device, the adjusting hydraulic cylinder 6 receives the control signal and drives the guide barrel 4 to rise or fall, driving all the components above to move synchronously. Precise guidance reduces the risk of material waste and uneven mixing. The efficient height adjustment mechanism improves the versatility of the device, can quickly match different production scenarios, and reduce the cost of equipment installation and commissioning.

[0035] The adjustable hydraulic cylinder 6 provides the power source for adjusting the device height, precisely controlling the vertical position of the guide barrel 4, the telescopic barrel 3, and even the entire mixing device. This meets the varying height requirements of different sites and processes, enabling the equipment to be used in multiple ways. Based on the principle of hydraulic transmission, it consists of a hydraulic cylinder body, piston, piston rod, hydraulic oil, and sealing components. Hydraulic oil is injected or extracted into the hydraulic cylinder via a hydraulic pump, pushing the piston to extend and retract the piston rod. The piston rod connects to the mounting lug 5 of the guide barrel 4, thus achieving precise control of the device height. The hydraulic system has pressure regulation and flow control functions, ensuring smooth and shock-free piston rod movement. Based on the height command input by the operator or a preset process program, the hydraulic control system is activated, and the adjustable hydraulic cylinder 6 extends and retracts as required, causing the upper components to rise or fall. During the movement, sensors monitor the device height in real time and provide feedback to the control system to ensure accurate positioning. The flexible height adjustment capability allows the device to operate normally in confined spaces or sites with special height requirements, expanding the equipment's applicability and improving production flexibility. Simultaneously, the smoothness of the hydraulic drive ensures that the device will not interfere with the mixing of internal materials during adjustment.

[0036] The top of the guide barrel 4 is threaded with a sealing cap 7. The top surface of the sealing cap 7 is equipped with a motor base 8. The motor base 8 contains a mixing motor 9. The mixing barrel 2 contains a mixing component 13. The surface of the sealing cap 7 has a feed inlet 12. The sealing cap 7 closes the top opening of the guide barrel 4 to prevent external impurities, dust and other contaminants from entering the mixing system, ensuring the purity of the material. At the same time, it provides a carrier for the feed inlet 12, enabling the orderly input of materials, maintaining stable internal pressure of the device, and facilitating the creation of a suitable environment for bio-enzyme catalysis and microbial growth. The combination of rubber sealing gaskets and threaded connections ensures a tight fit between the sealing cap 7 and the guide barrel 4, preventing gas and liquid leakage. The feed inlet 12 is located at a suitable position on the surface of the sealing cover 7 and can be connected to various feeding devices, such as funnels and metering pumps, to facilitate accurate material injection. Before each mixing operation, the sealing cover 7 is checked for sealing. When starting the feeding process, the valve or connecting device corresponding to the feed inlet 12 is opened. After the material is fed in according to the plan, the feed inlet 12 is immediately closed to maintain the sealing state until the mixing is completed. During this period, the sealing condition is continuously monitored, and any leakage is dealt with in a timely manner. The strict sealing measures ensure that the material quality is not affected by external factors. The stable internal environment helps to improve the activity of biological enzymes and maintain the vitality of microorganisms, thereby improving the quality and performance consistency of modified recycled concrete.

[0037] The motor base 8 provides a stable and reliable mounting base for the mixing motor 9, ensuring that the motor will not deviate from the axis due to vibration or shaking during operation, thus guaranteeing the stability and accuracy of power output. At the same time, it isolates the impact of motor vibration on other components, improving the overall reliability of the device. During operation, the motor base 8 bears the weight of the motor and the dynamic load during operation, absorbing or converting most of the vibration energy to ensure stable operation of the motor.

[0038] The mixing motor 9, as the core power source of the mixing component 13, drives the three-dimensional mixing shaft 1301 to rotate at high speed, providing powerful mechanical energy for material mixing. This promotes thorough mixing and contact between bio-enzymes, microorganisms, and recycled concrete raw materials, accelerating the modification reaction process. A three-phase asynchronous motor with high power factor and efficiency is typically selected. The motor is connected to the motor clamp 10 at the top of the three-dimensional mixing shaft 1301 via a coupling or key, converting electrical energy into rotational mechanical energy. Depending on the characteristics of different materials and mixing requirements, the motor speed can be adjusted via a frequency converter to achieve different mixing intensities. During the device startup preparation phase, the motor's electrical connections and insulation performance are checked. After startup, according to the preset program or operator instructions, the motor gradually accelerates to the set speed, driving the three-dimensional mixing shaft 1301 to rotate and continuously output power. During this period, parameters such as motor current and temperature are monitored in real time to ensure safe operation. After mixing is complete, the motor decelerates and stops. The powerful power output ensures thorough mixing of materials, meeting complex mixing needs. The adjustable speed adapts to different materials and process stages, improving the equipment's versatility and intelligence. Efficient electrical energy conversion reduces energy costs.

[0039] The mixing assembly 13 includes a three-dimensional mixing shaft 1301 and an adjusting sleeve shaft 1302. An adjusting spring 1306 is installed inside the adjusting sleeve shaft 1302. The top end of the adjusting spring 1306 is connected to the bottom end of the three-dimensional mixing shaft 1301, and the outer edge of the three-dimensional mixing shaft 1301 slides and engages with the inner wall of the adjusting sleeve shaft 1302. A motor locking block 10 is installed at the top end of the three-dimensional mixing shaft 1301, and the bottom end of the motor locking block 10 and its inner wall are clearance-fitted with the top end of the three-dimensional mixing shaft 1301. The top end of the motor locking block 10 is connected to the output shaft of the mixing motor 9. The three-dimensional mixing shaft 1301, as the active component of the mixing assembly 13, carries multiple layers of blades and rotates at high speed under the drive of the mixing motor 9, achieving all-round, multi-layer mixing of the materials. It uniformly disperses biological enzymes and microorganisms into the recycled concrete raw materials, making it a key component for improving the mixing effect. It is made of high-strength alloy steel, possessing good rigidity and wear resistance. Its external shape is designed as a non-uniform diameter cylinder to facilitate the installation of blades in different positions. The top end of the shaft is connected to an electric motor. The machine clamp 10 is connected to the output shaft of the mixing motor 9 to receive rotational power. The shaft body is designed with an I-shaped limiting groove 1304 and a T-shaped ring groove to securely install the arc-shaped blade 1307 and the bent blade 1308, ensuring that the blades do not fall off under high-speed rotation and work together. After the mixing motor 9 is started, the three-dimensional mixing shaft 1301 rotates accordingly, driving the arc-shaped blade 1307, the bent blade 1308 and the propeller blade 1309 to move synchronously. The arc-shaped blade 1307 first disperses and turns the upper layer of material. The bent blades 1308 enhance material shearing and mixing in the middle layer, while the propeller blades 1309 promote material circulation in the lower layer. The speed of the mixing motor 9 can be adjusted as needed according to the material mixing progress to optimize the mixing effect. The unique multi-layer blade layout is achieved by relying on the three-dimensional mixing shaft 1301, which comprehensively improves the uniformity of material mixing, increases the contact probability between biological enzymes, microorganisms and concrete particles, and accelerates the modification reaction. The ingenious design of the shaft body ensures stable blade operation and reduces maintenance costs.

[0040] The adjusting sleeve shaft 1302, in conjunction with the three-dimensional mixing shaft 1301, enables the mixing component 13 to adaptively adjust when the device height changes, buffering the displacement of the mixing shaft caused by the lifting and lowering of the device. At the same time, its external propeller blade 1309 participates in the mixing of the lower layer of material, enhancing the circulation of the bottom material and working together with the three-dimensional mixing shaft 1301 to improve the mixing efficiency. The material is similar to that of the three-dimensional mixing shaft 1301, with a hollow internal design and an internal adjusting spring 1306. The top of the spring is connected to the bottom of the three-dimensional mixing shaft 1301 to form an elastic buffer structure. When the device height decreases, the adjusting spring 1306 is compressed, and the three-dimensional mixing shaft 1301 slides upward relative to the adjusting sleeve shaft 1302. The two always maintain a sliding engagement state to ensure continuous mixing action. During device operation, if the adjusting hydraulic cylinder 6 drives the device height adjustment, the adjusting sleeve shaft 1302 moves synchronously. The internal adjusting spring 1306 extends and retracts according to the displacement change to maintain the relative position relationship between the three-dimensional mixing shaft 1301 and the adjusting sleeve shaft 1302, ensuring that the propeller blade 1309 continues to work normally and works together with other blades of the three-dimensional mixing shaft 1301 to complete material mixing. The adaptive adjustment capability enables the mixing component 13 to maintain efficient mixing when the device height changes, improving the equipment's adaptability to different working conditions. The spring buffer structure reduces hard collisions between components and extends the service life of the equipment. The participation of the propeller blade 1309 in mixing further optimizes the material mixing effect.

[0041] The adjusting spring 1306 serves as an elastic connector between the adjusting sleeve shaft 1302 and the three-dimensional mixing shaft 1301. It buffers the relative displacement caused by changes in device height, protecting components from hard impact damage. Simultaneously, it provides a certain amount of rebound force to the three-dimensional mixing shaft 1301, helping to maintain its stable position within the adjusting sleeve shaft 1302 and ensuring continuous mixing. Made of high-strength spring steel, it possesses excellent elastic limit and fatigue life. Pre-compressed to a certain degree according to device design requirements, it is installed within the adjusting sleeve shaft 1302. When the device height changes, the adjusting sleeve shaft 1302 and the three-dimensional mixing shaft 1301 move relative to each other, and the spring is subjected to… The spring deforms under force, storing or releasing elastic potential energy to balance displacement changes. Before the device starts, the spring is already in a pre-compressed state. During device operation, if the device is raised by adjusting the hydraulic cylinder 6, the spring is further compressed, providing upward support force for the three-dimensional mixing shaft 1301. If the device is lowered, the spring rebounds, pushing the three-dimensional mixing shaft 1301 downward, ensuring that it works in coordination with the adjusting sleeve shaft 1302. The spring status is monitored in real time to prevent fatigue failure. Effective elastic buffering reduces the risk of component wear and damage, ensures the long-term stable operation of the mixing component 13 under complex working conditions, improves equipment reliability, and reduces production interruption time caused by equipment failure.

[0042] An arc-shaped blade 1307 is connected near the top of the three-dimensional mixing shaft 1301. A bent blade 1308 is provided at the end of the three-dimensional mixing shaft 1301 near the adjusting sleeve shaft 1302. A propeller blade 1309 is provided on the outer surface of the adjusting sleeve shaft 1302. An I-shaped limiting groove 1304 is vertically circumferentially formed at the top of the three-dimensional mixing shaft 1301. The end of the arc-shaped blade 1307 is vertically engaged with the I-shaped limiting groove 1304. A T-shaped annular groove 130 is formed on the circumference of the three-dimensional mixing shaft 1301 near the bottom. 5. The bent blades 1308 are distributed around the circumference of the T-shaped annular groove 1305, and the ends of the bent blades 1308 are engaged with the inside of the T-shaped annular groove 1305. The arc-shaped blades 1307 are located near the top of the three-dimensional mixing shaft 1301, responsible for initially dispersing and turning the material fed into the upper layer of the mixing tank 2, increasing the contact area between the material and the air, promoting the rapid distribution of biological enzymes and microorganisms in the upper layer of the material, and laying the foundation for subsequent deep mixing. They are generally made of stainless steel sheet by stamping, and have a certain degree of flexibility and strength. The arc-shaped design, based on fluid mechanics principles, generates significant airflow disturbance and material lift at high speeds, throwing the material upwards and outwards, allowing it to fully disperse in the upper space of the mixing tank 2. The ends of the arc-shaped blades engage vertically with the I-shaped limiting grooves 1304 on the top of the three-dimensional mixing shaft 1301, ensuring a secure connection. When the mixing motor 9 starts, it drives the three-dimensional mixing shaft 1301 to rotate, causing the arc-shaped blades 1307 to rotate at high speed. After the material is fed into the inlet 12, it first encounters the arc-shaped blades 1307, being broken down into small particles or flocs. Some material is briefly suspended by the airflow, increasing its contact with subsequently added material. During continuous mixing, the arc-shaped blades 1307 repeat this action until the upper layer of material is initially and evenly mixed. The efficient upper layer material handling capacity accelerates the initial mixing speed, improves mixing efficiency, and reduces the burden on the middle and lower layers. The rational design and secure installation of the arc-shaped blades 1307 ensure their reliability under high-speed rotation, reducing maintenance frequency.

[0043] The bent blade 1308 is positioned at the end of the three-dimensional mixing shaft 1301 near the adjusting sleeve shaft 1302, in the middle layer of the mixing tank 2. Its main function is to perform lateral shearing and mixing of the material, further refining the initially mixed material in the upper layer, promoting a closer bond between bio-enzymes, microorganisms, and concrete particles, and enhancing the modification effect. Forged from high-strength alloy steel and bent into a sickle shape, it cuts and shears the material with its sharp edges when rotating at high speed under the drive of the three-dimensional mixing shaft 1301, breaking down large particles and simultaneously generating lateral material flow, propelling the material to circulate and mix in the middle layer. The blades are distributed and engaged around the T-shaped annular groove near the bottom of the three-dimensional mixing shaft 1301, ensuring stability. After the arc-shaped blade 1307 initially disperses the upper layer of material, the bent blade 1308, along with the rotation of the three-dimensional mixing shaft 1301, intervenes to continuously shear and mix the material falling to the middle layer, redistributing the material according to different particle sizes and compositions to form a more uniform mixture flow, which is then conveyed to the lower propeller blade 1309 for further processing. During the mixing process, the speed of the mixing motor 9 can be appropriately adjusted according to the material feedback to optimize the shearing effect. The powerful middle-layer shearing and mixing capability improves the fineness of the material, increases the penetration depth of biological enzymes and microorganisms in concrete, and enhances the uniformity of the modification effect. The reliable installation and high-strength material of the bent blade 1308 ensure long-term efficient operation and adapt to complex mixing requirements.

[0044] The propeller blade 1309 is installed on the outer surface of the adjusting sleeve shaft 1302, located in the lower layer of the mixing tank 2. It is responsible for propelling the lower layer material upwards in a circulating flow, forming a closed loop of material circulation and enhancing the overall mixing effect. It is particularly effective in increasing the penetration rate of biological enzymes and microorganisms in the pores of concrete particles. Typically manufactured using a casting process, it has a large pitch and blade area. When the adjusting sleeve shaft 1302 rotates with the three-dimensional mixing shaft 1301, it pushes the lower layer material upwards along a spiral trajectory based on the principle of spiral propulsion. Simultaneously, the centrifugal force generated by the blade rotation accelerates the material flow near the tank wall, forming a vortex flow and accelerating material mixing. During the process, the propeller blade 1309 and other blades of the three-dimensional mixing shaft 1301 work synchronously. The lower layer material flows upward under the push of the propeller blade 1309 and merges with the falling material in the middle layer to form a dynamic cycle. During the continuous stirring process, the mixing effect of the material is continuously enhanced. According to the material characteristics and mixing target, the height of the device can be adjusted by adjusting the hydraulic cylinder 6 to optimize the working state of the propeller blade 1309. The efficient circulation of the lower layer material promotes the overall mixing uniformity of the material, accelerates the penetration of biological enzymes and microorganisms, shortens the mixing reaction time, and improves production efficiency. The reasonable design of the propeller blade 1309 and the coordinated cooperation of the adjusting sleeve shaft 1302 ensure a stable lower layer stirring effect.

[0045] A drive motor 15 is embedded in the bottom surface of the mixing drum 2. A suction impeller 14 is connected to the output shaft of the drive motor 15, and the bottom surface of the suction impeller 14 is coplanar with the bottom surface of the mixing drum 2. A guide bearing 16 is located at the center of the top surface of the suction impeller 14. A bearing groove 1303 is formed on the bottom surface of the adjusting sleeve shaft 1302, and the inner wall of the bearing groove 1303 engages with the outer wall of the guide bearing 16. The drive motor 15 provides rotational power to the suction impeller 14, driving it to rotate at high speed. This creates a powerful vortex at the bottom of the mixing drum 2, rapidly drawing material from above to the bottom and enveloping it in high-speed rotation along the tangential direction of the vortex, accelerating the material mixing rate. This is crucial for achieving efficient mixing. The auxiliary power source, similar to the mixing motor 9, is usually a three-phase asynchronous motor. It is tightly connected to the central shaft of the suction impeller 14 via a coupling or key, converting electrical energy into rotational mechanical energy. The motor speed can be adjusted by a frequency converter according to the material characteristics and mixing requirements, thereby changing the suction force of the suction impeller 14 and the rotation speed of the material. Before starting the device, the drive motor 15 is electrically checked and debugged. After starting, it starts synchronously with the mixing motor 9 or sequentially according to a preset program. The motor speed is adjusted in real time according to the material mixing progress, continuously outputting power to drive the suction impeller 14 to rotate until the mixing is completed, at which point the motor decelerates and stops. During this period, the motor operating parameters are monitored to ensure safety.

[0046] Driven by the motor 15, the suction impeller 14 rotates at high speed, creating a low-pressure zone at the bottom of the mixing tank 2. This forms a powerful vortex flow, which uses suction to quickly draw material from above to the bottom, carrying it along the tangential direction of the vortex and causing it to rotate at high speed. This promotes ultra-fast mixing of the material under the combined action of centrifugal and centripetal forces, greatly enhancing the penetration rate of enzymes and microorganisms in the pores of concrete particles and strengthening the mixing effect. Typically, a metal material with good mechanical properties, such as aluminum alloy or stainless steel, is used. The impeller is designed with a special shape, generally consisting of multiple curved blades arranged around a central axis at a certain angle. When the impeller rotates at high speed, according to Bernoulli's principle in fluid mechanics, the fluid velocity between the blades increases and the pressure decreases, thereby generating an upward suction force that continuously draws material in. The impeller continuously draws material from the bottom; simultaneously, it imparts tangential velocity to the material, causing it to move in a high-speed circular motion at the bottom of the container, achieving rapid mixing. After starting synchronously with the drive motor 15, it continues to rotate at high speed. In the initial stage of mixing, it rapidly draws in material from the upper layer. As the material accumulates, the vortex flow gradually intensifies, and the material is violently stirred and mixed at the bottom. During this process, it continuously comes into full contact with the new material falling from the upper layer, as well as biological enzymes and microorganisms, until the preset mixing time is reached. At this point, the motor stops, and the impeller stops rotating. The powerful suction and stirring function significantly improves the material mixing efficiency, effectively shortens the mixing cycle, accelerates the modification reaction process, improves product quality stability, ensures the uniformity of performance of each batch of microbially modified recycled concrete, and reduces quality fluctuations caused by uneven mixing. Specific Implementation Example 2:

[0048] Reference Figures 1 to 6 Based on the content of the above specific embodiments, the following content is further disclosed:

[0049] The mixing tank 2 has a discharge pipe 11 on its side near the bottom. The vertical axis of the mixing motor 9 coincides with the vertical axis of the three-dimensional mixing shaft 1301. The vertical center axis of the three-dimensional mixing shaft 1301, the vertical center line axis of the adjusting sleeve shaft 1302, the vertical center axis of the suction impeller 14, and the vertical center axis of the drive motor 15 all coincide with each other. The feed inlet 12 serves as the only entrance for materials to enter the mixing device, precisely controlling the input of biological enzymes, microorganisms, and recycled concrete raw materials. Depending on the characteristics of different materials and the requirements of the mixing process, various feeding auxiliary devices can be connected to achieve orderly and quantitative input of materials, laying the foundation for subsequent high-quality mixing. The feed inlet 12 is located at a suitable position on the surface of the sealing cover 7, and is usually circular or square. Its diameter is designed according to the material flow requirements, and the edges are smoothed to reduce material adhesion to the wall. An external funnel can be connected for convenient centralized material pouring. When connected to a metering pump, it can precisely control the addition of trace materials, such as biological enzymes, ensuring that materials enter the mixing tank 2 according to the preset ratio. Before the mixing operation begins, prepare all kinds of materials according to the formula requirements. If a metering pump is available, set the parameters in advance. When starting the feeding process, open the inlet valve 12 or start the metering pump. The materials flow in slowly or quickly according to the plan. During the feeding process, closely monitor the material flow rate and status, and close the inlet valve 12 in time after feeding. Precise feeding control ensures accurate material ratios, avoids affecting the modification effect due to excessive or insufficient materials, improves product quality consistency, and expands the flexibility of feeding methods to adapt to different scales and different precision requirements of mixing production.

[0050] After the mixing is completed, the discharge pipe 11 uses gravity and internal pressure difference to smoothly discharge the uniformly mixed microbial modified recycled concrete material from the device. It can be connected to subsequent processing equipment or storage containers as needed to achieve continuous production and ensure the closed-loop integrity of the production process. The discharge pipe 11 is usually installed on the side of the mixing tank 2 near the bottom. It is made of corrosion-resistant and wear-resistant materials, such as steel pipes lined with rubber. Its pipe diameter is designed according to the material discharge speed requirements. The smooth inner surface of the pipe reduces the risk of material blockage. During discharge, the material in the mixing tank 2 flows naturally to the discharge pipe 11 under gravity. If a certain pressure is generated during the mixing process, it will also help to accelerate the discharge of the material. After the mixing reaches the process standards, such as the uniformity of material mixing and the maintenance of biological enzyme activity, the valve of the discharge pipe 11 is opened or the pumping device is started if necessary. The material begins to flow out. During the process, the discharge flow rate and quality are monitored to ensure that the discharged material meets the requirements. After discharge, the valve is closed, the residual material in the discharge pipe 11 is cleaned, and the next mixing is prepared. The reasonable discharge design facilitates material collection and transfer, improves production efficiency, reduces material residue and waste, ensures smooth continuous production, and works in coordination with the feed inlet 12 to achieve efficient operation of the entire mixing process. Specific Implementation Example 3:

[0052] Reference Figures 1 to 6 Based on the content of the above specific embodiments, the following content is further disclosed:

[0053] The details of the blade installation are as follows:

[0054] The I-shaped limiting groove 1304 provides a precise and stable installation position for the arc-shaped blade 1307, ensuring that it will not undergo axial or radial displacement during the high-speed rotation of the three-dimensional mixing shaft 1301. This ensures the stable execution of the upper layer material dispersing and turning actions, maintaining the uniformity and efficiency of the initial mixing of the upper layer material during the mixing process. The unique shape design of the I-shaped limiting groove 1304 makes it fit tightly with the end of the arc-shaped blade 1307 and provides a certain degree of guidance. On the one hand, the width of the groove matches the thickness of the blade tip, limiting the radial sway of the blade; on the other hand, the depth of the groove provides sufficient embedding space for the blade, preventing it from coming out under axial force. At the same time, under the centrifugal force generated by high-speed rotation, the blade tip will fit more tightly into the limiting groove. During the device assembly process, the end of the arc-shaped blade 1307 is carefully inserted into the I-shaped limiting groove 1304 to ensure complete engagement. During subsequent operation, as the three-dimensional mixing shaft 1301 rotates, the arc-shaped blade 1307 always maintains a fixed posture, stably performing its function of processing the upper material. If maintenance is required, the blade can be easily disassembled and replaced. The reliable installation method reduces the risk of blade operation, reduces equipment downtime caused by blade loosening or falling off, ensures the continuity of mixing operations, and improves production efficiency. At the same time, the precise installation and positioning optimize the working effect of the arc-shaped blade 1307 and improve the initial mixing quality of the material.

[0055] The T-shaped annular groove 1305 is specifically designed for mounting the bending blade 1308, allowing it to be stably distributed near the bottom of the three-dimensional mixing shaft 1301. It bears the heavy responsibility of lateral shearing and mixing of materials in the middle layer, ensuring that the bending blade 1308 will not shift under high-speed rotation, and stably further refines the preliminary mixture in the upper layer, enhancing the modification effect. The structure of the T-shaped annular groove consists of two parts, one horizontal and one vertical. The horizontal part provides a mounting plane for the bending blade 1308, allowing it to fit tightly against the shaft body, while the vertical part acts like a slot to hold the blade end, restricting its radial movement. This design allows the bending blade 1308 to maintain its relative position to the three-dimensional mixing shaft 1301 even under significant shearing and material impact forces. During assembly, the bending blade 1308 is inserted sequentially along the circumference of the T-shaped groove, with its ends engaging the vertical slots. After successful debugging, the device is started. During operation, the bending blade 1308 rotates synchronously with the three-dimensional mixing shaft 1301, continuously and efficiently shearing and mixing the intermediate layer material. Depending on the material conditions, the machine can be stopped if necessary for blade inspection, maintenance, or replacement. This design provides high-strength installation protection for the bending blade 1308, ensuring its long-term stable operation under complex mixing conditions, improving the reliability and effectiveness of the intermediate layer mixing, promoting the deep integration of biological enzymes, microorganisms, and concrete particles, and enhancing product quality.

[0056] The motor clamp 10 serves as the connecting link between the three-dimensional mixing shaft 1301 and the output shaft of the mixing motor 9, achieving efficient power transmission and ensuring that the three-dimensional mixing shaft 1301 receives stable and strong rotational power to drive the multi-layer blades to fully mix the materials. It also facilitates quick installation and disassembly of the motor and mixing shaft, improving equipment maintenance convenience. The motor clamp 10 is generally designed as a hollow, open-end sleeve, with its inner diameter clearance-fitted to the outer diameter of the top of the three-dimensional mixing shaft 1301, ensuring a tight connection while allowing for certain installation tolerances. The open end is fixed to the output shaft of the mixing motor 9 via a key connection or clamping bolts, thus securing the motor... The torque output by the machine is seamlessly transmitted to the three-dimensional mixing shaft 1301, enabling the shaft to rotate at high speed. In the initial stage of device assembly, the motor clamp 10 is first placed on the top of the three-dimensional mixing shaft 1301. After adjusting the position, it is connected to the output shaft of the mixing motor 9. The bolts or mounting keys are tightened. Before starting the motor, the reliability of the connection is checked. During operation, the motor clamp 10 stably transmits power. If there is a need for motor repair or replacement, it can be easily disassembled and separated. The power transmission path is optimized, ensuring a stable supply of mixing power and reducing the risk of power loss or equipment failure due to connection problems. The convenient installation and disassembly characteristics reduce equipment maintenance time and improve production flexibility.

[0057] In summary:

[0058] 1. The height adjustment system, consisting of a hydraulic cylinder 6, a telescopic barrel 3, and a guide barrel 4, allows for flexible adjustment of the device height according to different scenarios. In small scientific research laboratory environments, it adapts to limited operating space, optimizes the material feeding process, reduces material loss and feeding chaos, and ensures accurate implementation of experimental mixing. In large-scale industrial production scenarios, it meets the needs of rapid feeding and efficient mixing of large quantities of materials, broadens the application range of the equipment, and enables it to adapt to different production scales and site conditions.

[0059] 2. The structure employs a three-dimensional mixing shaft 1301 and multi-layer blades. The surface of the three-dimensional mixing shaft 1301 is arranged with arc-shaped blades 1307, bent blades 1308 and propeller blades 1309 arranged sequentially from high to low for mixing and stirring. This multi-layer stirring provides all-round and multi-level stirring of materials, achieving fine mixing of materials. It promotes full contact between biological enzymes, microorganisms and recycled concrete raw materials, increases the reaction contact area, deeply refines materials, breaks up large particles, strengthens the fusion of various components, eliminates mixing dead corners, ensures uniform mixing of materials, improves product uniformity, effectively reduces quality differences caused by uneven mixing, and stabilizes product quality.

[0060] 3. The structure of the suction impeller 14 rotating at high speed under the drive of the drive motor 15 creates a low-pressure zone at the bottom of the mixing tank 2 based on the principles of fluid mechanics, forming a strong vortex flow. This quickly attracts the material above to the core of the bottom vortex, significantly shortening the material mixing time. The material being drawn in moves in a high-speed circular motion under the tangential force of the impeller, significantly increasing the frequency of collisions and friction between materials. This accelerates the diffusion and penetration of biological enzymes and microorganisms in concrete particles, improving the overall mixing efficiency and providing strong support for the rapid production of high-quality microbial modified recycled concrete.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A microorganism modified recycled concrete mixing reaction all-in-one machine based on biological enzyme catalysis, comprising a mixing base (1) and a mixing barrel (2), characterized in that: The mixing base (1) has a mixing barrel (2) on its top surface. The mixing barrel (2) has a telescopic barrel (3) on its top surface. The telescopic barrel (3) is connected to a guide barrel (4) on its top surface. The guide barrel (4) and the telescopic barrel (3) have an mounting ear (5) on their outer side at the joint. The mixing base (1) has a vertically mounted adjusting hydraulic cylinder (6) on its top surface. The movable end of the adjusting hydraulic cylinder (6) is connected to the bottom surface of the mounting ear (5). The guide barrel (4) has a threaded connection to a sealing cover (7). The sealing cover (7) has a motor base (8) on its top surface. The motor base (8) has a mixing motor (9) inside its interior. The mixing barrel (2) has a mixing assembly (13) inside its interior.

2. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 1, characterized in that: The mixing assembly (13) includes a three-dimensional mixing shaft (1301) and an adjusting sleeve shaft (1302). An adjusting spring (1306) is provided inside the adjusting sleeve shaft (1302). The top end of the adjusting spring (1306) is connected to the bottom end of the three-dimensional mixing shaft (1301), and the outer edge of the three-dimensional mixing shaft (1301) is slidably engaged with the inner wall of the adjusting sleeve shaft (1302).

3. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 2, characterized in that: The mixing barrel (2) is equipped with a drive motor (15) embedded in its bottom surface. The output shaft of the drive motor (15) is connected to a suction impeller (14), and the bottom surface of the suction impeller (14) is coplanar with the bottom surface of the mixing barrel (2). A guide bearing (16) is provided at the center of the top surface of the suction impeller (14). A bearing groove (1303) is opened on the bottom surface of the adjusting sleeve shaft (1302), and the inner wall of the bearing groove (1303) is engaged with the outer wall of the guide bearing (16).

4. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 3, characterized in that: The three-dimensional mixing shaft (1301) is connected to an arc-shaped blade (1307) near its top end. The three-dimensional mixing shaft (1301) is provided with a bent blade (1308) at its end near the adjusting sleeve shaft (1302). The outer surface of the adjusting sleeve shaft (1302) is provided with a propeller blade (1309).

5. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 4, characterized in that: The top of the three-dimensional mixing shaft (1301) has a vertically circumferentially formed I-shaped limiting groove (1304), the end of the arc-shaped blade (1307) is vertically engaged with the I-shaped limiting groove (1304), the three-dimensional mixing shaft (1301) has a T-shaped annular groove (1305) near the bottom, the bent blade (1308) is distributed along the circumference of the T-shaped annular groove (1305), and the end of the bent blade (1308) is engaged with the inside of the T-shaped annular groove (1305).

6. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 5, characterized in that: The top of the three-dimensional mixing shaft (1301) is provided with a motor clamp (10), and the bottom end and inner wall of the motor clamp (10) are clearance-fitted with the top of the three-dimensional mixing shaft (1301). The top of the motor clamp (10) is connected to the output shaft of the mixing motor (9).

7. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 1, characterized in that: The sealing cap (7) has an inlet (12) on its surface, and the mixing tank (2) has an outlet pipe (11) on its side near the bottom.

8. The microorganism modified recycled concrete mixing and reaction all-in-one machine based on biological enzyme catalysis according to claim 1, characterized in that: The vertical axis of the mixing motor (9) coincides with the vertical axis of the three-dimensional mixing shaft (1301), and the vertical central axis of the three-dimensional mixing shaft (1301), the vertical central axis of the adjusting sleeve shaft (1302), and the vertical central axis of the suction impeller (14) and the vertical central axis of the driving motor (15) all coincide with each other.

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