Concrete mixing plant system

Abstract

The invention provides a concrete mixing plant system which comprises an aggregate storage system, the aggregate storage system comprises a plurality of bins separated by partition walls, a plurality of transversely-penetrating box culverts are arranged at the bottoms of the bins, openings communicated with the opposite box culverts are formed in the bottom walls of the bins in an array mode, and discharging weighing hoppers are arranged in the openings; a gallery belt which is coaxial with the box culvert and is positioned below the corresponding discharging weighing hopper is arranged in the box culvert; and a discharging platform which is higher than the bin and lower than the discharging road is arranged on the feeding side of the bin. Through the arrangement of the discharging platform, the material gathering hopper, the material distributing belt and the discharging trolley, the discharging and feeding process is smoother, the material transfer time is shortened, the aggregate storage and conveying efficiency is improved, and therefore the concrete production speed is increased, and meanwhile through a temperature control system, accurate calculation and control, the production efficiency is improved. Production stagnation or adjustment time caused by the temperature problem is reduced, the continuity of the production process is ensured, and the production efficiency of the mixing plant is integrally improved.

Description

Technical Field

[0001] The invention relates to the field of concrete production, and in particular to a concrete mixing station system. Background Art

[0002] In modern construction projects, concrete is a key building material, and its quality and performance play a decisive role in the overall quality and safety of the project. As the core place for producing concrete, the design and operation of the concrete mixing plant system directly affect the quality of concrete.

[0003] The traditional concrete mixing station system has some shortcomings in the aspects of aggregate storage and transportation. In terms of aggregate storage, due to the unreasonable system layout, the transport vehicle unloading efficiency is slow, and the connection between the silo and the conveying equipment is not smooth enough. The loader is required to load the aggregate, which seriously reduces the loading efficiency. At the same time, the aggregate is prone to spillage during the transportation process, which not only reduces production efficiency, but also may cause material waste, resulting in low efficiency in the storage and use of aggregates, affecting the accuracy of the concrete mix ratio. Therefore, a concrete mixing station system is proposed to solve the above problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a concrete mixing station system to solve the problem that the storage and use efficiency of aggregates in the traditional concrete mixing station system is low, which affects the accuracy of the concrete mix ratio.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a concrete mixing station system, comprising: An aggregate storage system, comprising a plurality of silos separated by partition walls, a plurality of culverts penetrating transversely being arranged at the bottom of the silo, and an array of openings communicating with the corresponding culverts being arranged on the bottom wall of the silo, a discharge weighing hopper being arranged in the opening, a corridor belt being coaxial with the culvert and located below the corresponding discharge weighing hopper being arranged in the culvert, a discharge platform being higher than the culvert and lower than the discharge road being arranged on the feed side of the silo, a gathering hopper corresponding to each silo being arranged at the step between the discharge platform and the discharge road, a material distribution belt being arranged above each silo, the front end of the material distribution belt being inclined, and the end being located below the discharge end of the corresponding gathering hopper, and a discharge trolley being arranged on the material distribution belt; A concrete mixing system, which includes one or more concrete mixing plants; The number of high-altitude loading inclined belts corresponds to the concrete mixing plant. The loading end thereof passes through the box culvert longitudinally and is located below the discharge end of the corresponding corridor belt. The discharge end is connected to the feed end at the top of the corresponding concrete mixing plant.

[0006] In a preferred embodiment, material guiding slopes are provided between the openings of the bottom wall of the silo and between the openings and the partition wall, wherein the cross-section of the material guiding slopes connected between the openings is conical.

[0007] In the preferred embodiment, the loading end of the high-altitude loading inclined belt passes through the box culvert between multiple silos, and corridor belts are provided in the box culverts on both sides of the high-altitude loading inclined belt to receive the discharge of the corresponding discharge weighing bucket, and the discharge end of the corridor belt is located above the loading end of the corresponding high-altitude loading inclined belt.

[0008] In the preferred embodiment, the concrete mixing plant includes a mixing building body, a plurality of aggregate silos are arranged in the mixing building body, and a cooling air machine platform located at the aggregate silo is arranged on the outside of the mixing building body, and a plurality of cooling air machine devices are arranged on the cooling air machine platform. The air outlet of the air cooling device is connected to the aggregate silo used for loading stones through a cold air inlet, and the aggregate silo is equipped with a wind window.

[0009] In the preferred embodiment, the discharge port of the aggregate bin is connected to an aggregate weighing hopper via a batcher, and the discharge end of the aggregate weighing hopper is connected to the feed end of the centralized hopper; The concrete mixing system also includes an ice-making building arranged between the concrete mixing buildings. The ice-making building includes an ice-making building body. The ice-making building body is provided with an ice-making machine, an ice storage bin and a refrigeration main unit from top to bottom. A bolt conveyor is provided at the ice outlet of the ice storage bin. An ice flake weighing hopper is provided at the discharge end of the bolt conveyor. An ice flake conveying belt is provided at the discharge end of the ice flake weighing hopper. The discharge end of the ice flake conveying belt is connected to the corresponding feed end of the concentrated hopper of the concrete mixing building.

[0010] In the preferred embodiment, the concrete mixing system further includes an aggregate air cooling and cold water system, and the aggregate air cooling and cold water system includes: Containerized refrigeration host, connected to air-cooling equipment; A water chiller connected to the refrigeration host; pools, used to store water; Evaporative cooling, there are multiple units, which are connected to the containerized refrigeration host and the refrigeration host respectively.

[0011] The preferred embodiment also includes a method for controlling the temperature of concrete, which includes calculating the concrete outlet temperature according to the type and initial temperature of the concrete raw materials; the formula is as follows ; in, is the concrete outlet temperature, are the mass, specific heat capacity and initial temperature of various ingredients in concrete, is the stirring heat, the normal value is 2550 kJ / m³, For ice amount, is the utilization rate of ice, fixed value 0.95, is the number of types of raw materials in concrete, The heat exchange amount between concrete and the external environment during the mixing process; Heat exchange capacity By formula Calculate, where is the surface heat transfer coefficient, is the contact area between concrete and the external environment, is the average temperature difference between concrete and the environment, , is the average temperature during concrete mixing, is the external environment temperature, is the stirring time; Determine whether the temperature control requirements are met based on the calculation results. If the temperature is higher than the target temperature, the temperature of aggregate and mixing water is lowered by adjusting the air cooling and ice making system; Then through the formula Calculate air cooling load ,in is the specific heat capacity of aggregate, is the aggregate mass flow rate, is the aggregate cooling range; By formula Calculate cooling air flow ,in is the air density, , are the inlet air enthalpy and outlet air enthalpy of the air cooler; By formula Calculating ice making load ,in is the specific heat capacity of water, is the mass flow rate of stirring water, The temperature reduction range of the mixing water; By formula Calculate ice quantity .

[0012] In the preferred embodiment, the method for controlling the temperature of concrete further includes a dynamic adjustment method, which optimizes the coordinated operation of the air cooling and ice making systems according to real-time data, and includes: Constructing a comprehensive evaluation function ,in , , , is the weight coefficient, and , is the aggregate cooling range, is the concrete production speed, is the ambient humidity, is the ambient temperature; according to The value determines the start of the air cooling and ice making system. When the air cooling system is activated, When the air cooling and ice making systems are started at the same time, and is a pre-set threshold; The weight coefficient , , , By collecting concrete temperature control data under different working conditions, the multivariate linear regression analysis method is used to fit the system energy consumption and temperature control accuracy as the objective function; The threshold and Determined through experimental testing and data analysis, different tests are performed in different production scenarios. Values, record the energy consumption and temperature control effects of the air cooling and ice making systems, and compare and analyze to obtain the values ​​that minimize system energy consumption and ensure temperature control accuracy; Real-time collection of aggregate temperature , concrete outlet temperature , Ambient temperature , Cold air temperature , concrete production speed , Ambient humidity The collected data is cleaned and normalized, and the potential relationship between the data is explored using correlation analysis methods. The operating parameters of the air cooling and ice making systems are adjusted in real time according to the analysis results. The formula is used Dynamically adjust the air cooling load using the formula Dynamically adjust ice making load.

[0013] In the preferred embodiment, the method for controlling the temperature of concrete also includes a machine learning driven method, which can predict the temperature control demand and realize the intelligent coordinated control of the air cooling and ice making system, which includes: Get aggregate temperature from historical production records and real-time production process , Ambient temperature , concrete mix ratio, concrete outlet temperature , air cooling and ice making system operating parameter data, clean and standardize the data, perform feature engineering, extract and construct relevant features, divide the data into training set, validation set and test set; use gradient descent algorithm to minimize the mean square error loss function To adjust the multivariate regression model Model parameters ,in is the sample size, is the actual concrete outlet temperature, Predict temperature for the model, adjust model hyperparameters using the validation set, evaluate model performance using the test set, predict temperature control requirements based on historical and real-time data, and provide adjustment strategies for air cooling and ice making systems; The reinforcement learning algorithm is used to dynamically optimize the air cooling and ice making coordination strategy. The formula is: ; in is the system status, To adjust the air cooling or ice making amount, is the reward value, which is calculated by the comprehensive reward function. The formula is ; is the actual temperature of the concrete outlet at the current moment, is the target temperature, is the actual energy consumption of the air cooling and ice making system at the current moment, is the baseline energy consumption, weight coefficient and Through experiments and actual operation data adjustment, the best balance between temperature control accuracy and energy efficiency is achieved; is the learning rate, is the discount factor.

[0014] In the preferred solution, a weight sensor is provided for the discharge weighing hopper, a speed and weight sensor is provided for the corridor belt, a temperature sensor is installed on the high-altitude feeding inclined belt, a temperature sensor is provided for the aggregate bin, a wind speed sensor is provided near the aggregate bin wind window, a temperature sensor is provided for the centralized hopper, a temperature and liquid level sensor is provided for the ice maker, a temperature sensor is provided for the ice storage bin, a weight sensor is provided for the ice flake weighing hopper, a temperature and pressure sensor is provided for the inlet and outlet pipes of the containerized refrigeration host, a temperature and pressure sensor is provided for the inlet and outlet pipes of the chiller, a temperature and liquid level sensor is provided for the water tank, a temperature sensor is provided for the inlet and outlet pipes of the evaporative cooling, and an ambient temperature sensor and an ambient humidity sensor are provided in the working area of ​​the mixing station; The mixing building is also equipped with: The discharging end of the rotary hopper of the mixing plant can be connected to the feeding port of any aggregate bin by rotation. The discharging end of the high-altitude feeding inclined belt penetrates the top of the concrete mixing plant and is connected to the feeding end of the rotary hopper of the mixing plant. Aggregate double-fork flap feeder, whose feeding end is connected to the discharging end at the bottom of the centralized hopper; There are two mixers, and the aggregate inlets of the two mixers are respectively connected to the two discharge ends of the aggregate double-fork flap feeder; There are two concrete discharge hoppers, which are respectively connected to the discharge ports of the two mixers; The water and additive tank is arranged beside the aggregate weighing hopper, and its discharge end is connected to the mixer through a weighing device; There are also multiple powder silos on the side of the mixing building. The discharge end of the powder silo is connected to the powder weighing hopper through a feeding screw machine. The discharge end of the powder weighing hopper is connected to a powder concentration hopper. The discharge end of the powder concentration hopper is connected to a powder double-fork flap feeder. The two discharge ports of the powder double-fork flap feeder are respectively connected to two mixers.

[0015] The present invention provides a concrete mixing station system, which makes the unloading and loading processes smoother through the arrangement of a unloading platform, a collecting hopper, a material distribution belt and a unloading trolley, reduces the material transfer time, improves the aggregate storage and transportation efficiency, and thus speeds up the concrete production speed. At the same time, through the temperature control system, through precise calculation and control, it can reduce the production stagnation or adjustment time caused by temperature problems, ensure the continuity of the production process, and improve the overall production efficiency of the mixing station. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a top view of the overall structure of the present invention; Figure 2 is a cross-sectional structural diagram of the aggregate storage system of the present invention; Figure 3 It is a cross-sectional view of the connection structure between the concrete mixing system of the present invention and the high-altitude feeding inclined belt; Figure 4 It is a cross-sectional structural diagram of the concrete mixing system of the present invention; Figure 5 It is the structural diagram of the concrete mixing plant of the present invention; Figure 6 This is a top view of the concrete mixing plant of the present invention; Figure 7 It is the structural diagram of the ice making building of the present invention; In the figure: concrete mixing plant 1; mixing plant body 100; mixing plant rotary hopper 101; aggregate silo 102; aggregate weighing hopper 103; centralized hopper 104; aggregate double-fork flap feeder 105; mixer 106; concrete discharge hopper 107; water and admixture box 108; powder silo 109; air cooler platform 110; air cooling equipment 111; ice making plant 2; ice making plant body 200; ice making machine 201; Ice storage 202; bolt conveyor 203; ice flake weighing bucket 204; ice flake conveying belt 205; refrigeration main unit 206; containerized refrigeration main unit 3; chiller 4; water tank 5; evaporative cooling 6; partition wall 7; silo 8; box culvert 9; material discharge weighing bucket 10; corridor belt 11; high-altitude loading inclined belt 12; unloading platform 13; material collecting hopper 14; material distribution belt 15; unloading trolley 16; material guide slope 17. DETAILED DESCRIPTION

[0017] Example 1 like Figure 1-7 As shown, a concrete mixing station system includes an aggregate storage system, a concrete mixing system and a high-altitude feeding inclined belt 12, wherein the aggregate storage system includes a plurality of silos 8 separated by a partition wall 7 for storing aggregates of different specifications, a plurality of culverts 9 are arranged at the bottom of the silo 8, and an array of openings connected to the relative culverts 9 are arranged on the bottom wall of the silo 8, and a discharge weighing bucket 10 is arranged in the opening, and guide holes 12 are arranged between the openings on the bottom wall of the silo 8 and between the openings and the partition wall 7. The material slope 17, wherein the cross-section of the material guide slope 17 connected between the openings is conical, so that the aggregate can flow smoothly to the discharge weighing bucket 10 under the action of gravity, thereby improving the unloading efficiency and reducing the aggregate residue. The box culvert 9 is provided with a corridor belt 11 which is coaxial with it and located below the corresponding discharge weighing bucket 10. The corridor belt 11 can be used to transport the aggregate discharged from the discharge weighing bucket 10 thereon. Since it is arranged in the box culvert 9 and horizontally passes through the silo 8, it can transport the aggregates in different silos 8.

[0018] The feed side of the silo 8 is provided with a unloading platform 13 which is higher than the silo and lower than the unloading road. A collecting hopper 14 corresponding to each silo 8 is provided at the step between the unloading platform 13 and the unloading road. A material dividing belt 15 is erected above each silo 8. The front end of the material dividing belt 15 is inclined, and the end portion is located below the discharge end of the corresponding collecting hopper 14. A unloading trolley 16 is provided on the material dividing belt 15.

[0019] Such a design makes it easy for the transport vehicle to utilize the height difference to unload directly above the collecting hopper 14. The aggregate first falls into the collecting hopper 14 and is then transported to the corresponding silo 8 through the dividing belt 15. The unloading trolley 16 on the dividing belt 15 can distribute the aggregate to silos 8 at different positions as needed, and finally the discharge weighing hopper 10 arranged in an array in the silo 8 is used for discharge.

[0020] The concrete mixing system includes one or more concrete mixing plants 1. In this embodiment, there are two concrete mixing plants 1, which can perform concrete mixing work simultaneously.

[0021] The high-altitude loading inclined belt 12, the number of the high-altitude loading inclined belt 12 corresponds to the concrete mixing plant 1, the loading end thereof passes through the box culvert 9 longitudinally, and is located below the discharging end of the corresponding corridor belt 11, and the discharging end is connected to the top feeding end of the corresponding concrete mixing plant 1, so as to receive the aggregate discharged from the discharging weighing bucket 10 and transport it to the loading end of the high-altitude loading inclined belt 12, and then to the corresponding concrete mixing plant 1.

[0022] It should be noted that in the present embodiment, there are two high-altitude loading inclined belts 12, corresponding to two concrete mixing plants 1 respectively, and their top-down view is L-shaped, which can effectively save land occupation, and the loading ends of the two high-altitude loading inclined belts 12 pass through the box culvert 9 between multiple silos 8, and the box culverts 9 on both sides of the high-altitude loading inclined belts 12 are provided with corridor belts 11 for receiving the discharge of the corresponding discharge weighing bucket 10, and the discharge end of the corridor belt 11 is located above the corresponding loading end of the high-altitude loading inclined belt 12, and the corridor belt 11 in the box culvert 9 is specifically divided into two groups, front and rear, and the discharge ends of the two groups of corridor belts 11 correspond to the two high-altitude loading inclined belts 12 respectively, so as to lift and transport the aggregate to the concrete mixing plant 1, and secondly, the design of the high-altitude loading inclined belt 12 passing through multiple silos 8 from the middle is convenient for loading from both sides at the same time, which can effectively improve the transportation efficiency.

[0023] Furthermore, the concrete mixing plant 1 includes a mixing building body 100, in which a plurality of aggregate silos 102 are arranged for temporarily storing aggregates transported by the high-altitude loading inclined belt 12. In the present embodiment, the number of the aggregate silos 102 is six, including two large stone silos, one small stone silo, one medium stone silo, and two sand silos, and a cooling air machine platform 110 is arranged at the aggregate silo 102 on the outside thereof, and a plurality of cooling air machine devices 111 are arranged on the cooling air machine platform 110, and an air outlet of the cooling air machine 111 is communicated with the aggregate silo 102 for loading stones through a cold air inlet, and the aggregate silo 102 is provided with a wind window.

[0024] With such a design, cold air is blown into the aggregate bin 102 through the cold air inlet to cool the aggregate. The wind windows on the aggregate bin 102 can evenly distribute the cold air in the aggregate bin 102 to improve the cooling effect. In this embodiment, there are four air cooling devices 111, corresponding to four aggregate bins filled with stones. In addition, the air cooling device 111 is composed of a cold air cooler and an air cooler.

[0025] Furthermore, the discharge port of the aggregate bin 102 is connected to an aggregate weighing hopper 103 through a batcher, and the batcher accurately controls the discharge amount of the aggregate. The discharge end of the aggregate weighing hopper 103 is connected to the feed end of the centralized hopper 104, and the aggregate weighing hopper 103 weighs and measures the aggregate, and the centralized hopper 104 is used to centrally mix the aggregate.

[0026] Furthermore, the concrete mixing system also includes an ice-making building 2 arranged between the concrete mixing buildings 1, and the ice-making building 2 includes an ice-making building body 200, and the ice-making building body 200 is provided with an ice-making machine 201, an ice storage bin 202 and a refrigeration main unit 206 from top to bottom, and a bolt conveyor 203 is provided at the ice outlet of the ice storage bin 202, and an ice flake weighing hopper 204 is provided at the discharge end of the bolt conveyor 203, and an ice flake conveying belt 205 is provided at the discharge end of the ice flake weighing hopper 204, and the discharge end of the ice flake conveying belt 205 is connected to the corresponding feed end of the concentrated hopper 104 of the concrete mixing building 1.

[0027] With such a design, the flake ice in the ice storage 202 can be transported to the ice flake weighing hopper 204 through the bolt conveyor 203, and after accurate weighing and measurement, it is transported to the centralized hopper 104 of the concrete mixing plant 1 by the ice flake conveyor belt 205 and enters the mixer 106 together with other materials.

[0028] In the preferred embodiment, the concrete mixing system further includes an aggregate air cooling and cold water system, and the aggregate air cooling and cold water system includes: The containerized refrigeration host 3 is connected to the air cooling device 111 to provide a cold source for the air cooling system and reduce the temperature of the aggregate.

[0029] The water chiller 4 is connected to the refrigeration host 206 to prepare low-temperature water for concrete production.

[0030] A water tank 5, for storing water; There are multiple evaporative coolers 6, which are respectively connected to the containerized refrigeration host 3 and the refrigeration host 206 to enhance the refrigeration effect.

[0031] Furthermore, the mixing building 100 is also provided with: The mixing plant rotary hopper 101 has a discharge end which can be connected to the feed port of any aggregate bin 102 by rotation. The discharge end of the high-altitude loading inclined belt 12 penetrates the top of the concrete mixing plant 1 and is connected to the feed end of the mixing plant rotary hopper 101, thereby transporting the aggregate to the concrete mixing plant 1 and introducing it into the corresponding aggregate bin 102 through the mixing plant rotary hopper 101.

[0032] The aggregate double-fork flap feeder 105 has a feeding end connected to a discharging end at the bottom of the centralized hopper 104 .

[0033] There are two mixers 106 , and the aggregate inlets of the two mixers 106 are respectively connected to the two discharge ends of the aggregate double-fork flap feeder 105 .

[0034] There are two concrete discharge hoppers 107 , which are connected to the discharge ports of the two mixers 106 respectively.

[0035] With such a design, the weighed aggregates can enter the aggregate double-fork flap feeder 105 through the centralized hopper 104 , and the aggregate double-fork flap feeder 105 distributes the aggregates to the two mixers 106 .

[0036] The water and additive tank 108 is arranged beside the aggregate weighing hopper 103, and its discharge end is connected to the mixer 106 through a weighing device; A plurality of powder silos 109 are also provided on the side of the mixing building 100. The discharge end of the powder silo 109 is connected to a powder weighing hopper via a feeding screw machine. The discharge end of the powder weighing hopper is connected to a powder concentration hopper. The discharge end of the powder concentration hopper is connected to a powder double-fork flap feeder. The two discharge ports of the powder double-fork flap feeder are respectively connected to two mixers 106.

[0037] With such a design, water and admixtures in the water and admixture box 108 are also added to the mixer 106 in proportion through the weighing device, and cement, fly ash and other powders in multiple powder silos 109 are also added to the mixer 106 through the feeding screw machine, powder weighing bucket, powder concentration bucket and powder double-fork flap feeder. The two mixers 106 force the materials to be mixed. After the mixing is completed, the concrete is discharged to the transportation equipment through the concrete discharge hopper 107.

[0038] It should be noted that the above-mentioned devices are commonly used in this field, so they will not be described in detail here.

[0039] Example 2 Further described in conjunction with Example 1, a method for controlling the temperature of concrete is also included, which includes calculating the concrete outlet temperature according to the type and initial temperature of the concrete raw materials; the formula is as follows ; in, is the concrete outlet temperature, are the mass, specific heat capacity and initial temperature of various ingredients in concrete, is the stirring heat, the normal value is 2550 kJ / m³, For ice amount, is the utilization rate of ice, fixed value 0.95, is the number of types of raw materials in concrete, It is the amount of heat exchange between concrete and the external environment during the mixing process.

[0040] Heat exchange capacity By formula Calculate, where is the surface heat transfer coefficient, is the contact area between concrete and the external environment, is the average temperature difference between concrete and the environment, , is the average temperature during concrete mixing, is the external environment temperature, For the mixing time.

[0041] Determine whether the temperature control requirements are met based on the calculation results. Above the target temperature, the temperature of aggregate and mixing water is lowered by adjusting the air cooling and ice making systems.

[0042] Then through the formula Calculate air cooling load ,in is the specific heat capacity of aggregate, is the aggregate mass flow rate, is the aggregate cooling range; By formula Calculate cooling air flow ,in is the air density, , are the inlet air enthalpy and outlet air enthalpy of the air cooler; By formula Calculating ice making load ,in is the specific heat capacity of water, is the mass flow rate of stirring water, The temperature reduction range of the mixing water; By formula Calculate ice quantity .

[0043] For example, when this mixing station produces C25 and C30 concrete, according to the concrete mix ratio (such as 134kg cement and 80kg fly ash in C25 concrete), the specific heat capacity and initial temperature of each raw material (such as the initial temperature of cement is 55°C), combined with the mixing heat , Ice utilization The concrete outlet temperature is calculated based on the parameters such as temperature, and if the calculated temperature is higher than the target temperature (such as ≤16°C in summer), the air cooling and ice making systems are started to cool down.

[0044] Example 3 Further described in conjunction with Example 2, the method for controlling the temperature of concrete also includes a dynamic adjustment method, which optimizes the coordinated operation of the air cooling and ice making systems according to real-time data, and includes: Constructing a comprehensive evaluation function ,in , , , is the weight coefficient, and , is the aggregate cooling range, is the concrete production speed, is the ambient humidity, is the ambient temperature; according to The value determines the start of the air cooling and ice making system. When the air cooling system is activated, When the air cooling and ice making systems are started at the same time, and is a pre-set threshold; The weight coefficient , , , By collecting concrete temperature control data under different working conditions, using the multivariate linear regression analysis method, the objective function is fitted with system energy consumption and temperature control accuracy. For example, by analyzing the aggregate temperature drop in a large amount of production data , concrete production speed , Ambient humidity , Ambient temperature Determine the appropriate weight coefficient based on the relationship between system energy consumption and temperature control accuracy.

[0045] The threshold and Determined through experimental testing and data analysis, different tests are performed in different production scenarios. Values, record the energy consumption and temperature control effects of the air cooling and ice making systems, and compare and analyze to obtain the values ​​that minimize system energy consumption and ensure temperature control accuracy; Real-time collection of aggregate temperature , concrete outlet temperature , Ambient temperature , Cold air temperature , concrete production speed , Ambient humidity Data, clean the collected data, remove outliers, such as temperature data that obviously deviates from the normal range, perform normalization, convert the data into a unified scale to facilitate subsequent calculations and analysis, and use correlation analysis methods to explore the potential relationship between data, such as analyzing the correlation between ambient temperature and aggregate temperature, and adjust the operating parameters of the air cooling and ice making systems in real time according to the analysis results.

[0046] Using the formula: ; Dynamically adjust the air cooling load.

[0047] Using formula Dynamically adjust ice making load.

[0048] In this embodiment, the operation of the air cooling and ice making systems is adjusted according to real-time data through a dynamic optimization control scheme, thereby avoiding unnecessary energy consumption. For example, when the ambient temperature is low or the aggregate temperature is close to the target temperature, the air cooling or ice making amount is reasonably reduced, thereby improving energy utilization efficiency.

[0049] Example 4 In combination with Examples 2 and 3, the method for controlling the temperature of concrete also includes a machine learning driven method, which can predict the temperature control demand and realize the intelligent coordinated control of the air cooling and ice making system, which includes: Get aggregate temperature from historical production records and real-time production process , Ambient temperature , concrete mix ratio, concrete outlet temperature , air cooling and ice making system operating parameter data, clean and standardize the data to make it conform to the normal distribution, improve the model training effect, perform feature engineering, extract and construct relevant features, such as taking the change trend of ambient temperature as a feature, and divide the data into training set, validation set and test set; use the gradient descent algorithm to minimize the mean square error loss function To adjust the multivariate regression model Model parameters ,in is the sample size, is the actual concrete outlet temperature, For the model to predict temperature, use the validation set to adjust the model hyperparameters, such as learning rate and regularization parameters, to prevent overfitting. Use the test set to evaluate the model performance to ensure that the model has good generalization ability on new data. Predict temperature control requirements based on historical data and real-time data, and provide adjustment strategies for air cooling and ice making systems.

[0050] The reinforcement learning algorithm is used to dynamically optimize the air cooling and ice making coordination strategy. The formula is: ; in is the system status, To adjust the air cooling or ice making amount, is the reward value, which is calculated by the comprehensive reward function. The formula is ; is the actual temperature of the concrete outlet at the current moment, is the target temperature, is the actual energy consumption of the air cooling and ice making system at the current moment, is the baseline energy consumption, weight coefficient and Through experiments and actual operation data adjustment, the best balance between temperature control accuracy and energy efficiency is achieved; is the learning rate, The system control strategy is continuously optimized according to the reward value to achieve intelligent coordinated control of the air cooling and ice-making systems and maximize energy-saving efficiency.

[0051] In this embodiment, the advanced optimization scheme driven by machine learning predicts temperature control requirements and intelligently coordinates the air cooling and ice making systems to further optimize energy consumption, so that the system can minimize energy consumption while meeting temperature control requirements. Example 5 Further explanation in conjunction with Examples 1-3, in order to implement the above-mentioned temperature control method, the weight sensor on the discharge weighing bucket 10 monitors the weight of the aggregate in the discharge weighing bucket 10 in real time, providing data support for accurate batching and ensuring the accuracy of the concrete mix ratio. The speed sensor and weight sensor on the corridor belt 11 are used in conjunction with each other. The speed sensor monitors the running speed of the corridor belt 11, and the weight sensor monitors the weight of the aggregate on the belt. The two are combined to calculate the aggregate mass flow rate, providing key parameters for air cooling load calculation. The temperature sensor on the high-altitude loading inclined belt 12 monitors the temperature change of the aggregate during the loading process, which is convenient for timely grasping the temperature status of the aggregate and providing real-time data for temperature control calculation.

[0052] The temperature sensor in the aggregate bin 102 monitors the aggregate temperature in real time, providing a basis for the operation control of the air cooling system to ensure that the aggregate temperature meets the requirements. The wind speed sensor near the wind window of the aggregate bin 102 monitors the cold wind speed and evaluates the effect of the air cooling system in order to adjust the operating parameters of the air cooler. The temperature sensor on the centralized hopper 104 measures the temperature of the mixed materials before entering the mixing stage, providing a reference for the prediction and control of the concrete outlet temperature.

[0053] The temperature sensor and liquid level sensor on the ice maker 201 monitor the ice making temperature and water level respectively to ensure the normal ice making process. The temperature sensor in the ice storage 202 monitors the temperature of the ice storage to prevent the melting loss of ice and ensure the accuracy of ice addition. The weight sensor on the ice flake weighing hopper 204 accurately measures the amount of ice added to provide accurate data for temperature control calculation.

[0054] The temperature and pressure sensors on the inlet and outlet pipes of the containerized refrigeration host 3, the temperature and pressure sensors on the inlet and outlet pipes of the chiller 4, and the temperature sensors on the inlet and outlet pipes of the evaporative cooling 6 monitor the operating parameters of each part of the refrigeration system in real time, such as the refrigerant temperature and pressure, to ensure the stable operation of the refrigeration system and timely discover potential faults. The temperature sensor and liquid level sensor in the water pool 5 monitor the water temperature and water level of the water pool to ensure that the chiller has sufficient water supply and the water temperature meets the requirements.

[0055] The ambient temperature sensors and ambient humidity sensors in the working area of ​​the mixing station monitor the ambient temperature and humidity in real time, providing input parameters for the dynamic optimization control scheme and the advanced optimization scheme driven by machine learning, so that the system can adjust the temperature control strategy in time according to environmental changes.

[0056] During the operation of the entire concrete mixing plant system, various parts work together, sensors monitor data in real time, and temperature control methods make calculations and decisions based on the data to achieve precise control of concrete temperature, improve concrete production quality and efficiency, and optimize energy utilization.

[0057] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A concrete mixing station system, characterized in that: include: An aggregate storage system, comprising a plurality of silos (8) separated by partition walls (7), a plurality of culverts (9) penetrating transversely being arranged at the bottom of the silo (8), and an array of openings communicating with the corresponding culverts (9) being arranged on the bottom wall of the silo (8), a discharge weighing hopper (10) being arranged in the opening, a corridor belt (11) being coaxial with the culvert (9) and located below the corresponding discharge weighing hopper (10) being arranged in the culvert (9), a discharge platform (13) being higher than the culvert and lower than a discharge road being arranged on the feed side of the silo (8), a collecting hopper (14) corresponding to each silo (8) being arranged at the step between the discharge platform (13) and the discharge road, a material distribution belt (15) being arranged above each silo (8), the front end of the material distribution belt (15) being inclined, and the end being located below the discharge end of the corresponding collecting hopper (14), and a discharge trolley (16) being arranged on the material distribution belt (15); A concrete mixing system comprising one or more concrete mixing plants (1); The high-altitude loading inclined belt (12) has a number corresponding to the concrete mixing plant (1), and its loading end passes through the box culvert (9) longitudinally and is located below the discharge end of the corresponding corridor belt (11), and the discharge end is connected to the top feed end of the corresponding concrete mixing plant (1).

2. A concrete mixing station system according to claim 1, characterized in that: Material guide slopes (17) are provided between the openings of the bottom wall of the silo (8) and between the openings and the partition wall (7), wherein the material guide slopes (17) connected between the openings are conical in cross section.

3. A concrete mixing station system according to claim 1, characterized in that: The loading end of the high-altitude loading inclined belt (12) passes through the box culvert (9) between the multiple silos (8), and the box culverts (9) on both sides of the high-altitude loading inclined belt (12) are provided with corridor belts (11) for receiving the discharge of the corresponding discharge weighing bucket (10), and the discharge end of the corridor belt (11) is located above the loading end of the corresponding high-altitude loading inclined belt (12).

4. According to the concrete mixing station system of claim 1, it is characterized in that: The mixing building (1) comprises a mixing building body (100), wherein a plurality of aggregate silos (102) are arranged in the mixing building body (100), and an air cooling machine platform (110) located at the aggregate silos (102) is arranged outside the mixing building body (100), wherein a plurality of air cooling machine devices (111) are arranged on the air cooling machine platform (110), and an air outlet of the air cooling device (111) is connected to an aggregate silo (102) for loading stones via a cold air inlet, and an air window is provided on the aggregate silo (102).

5. A concrete mixing plant system according to claim 4, characterized in that: The discharge port of the silo (102) is connected to an aggregate weighing hopper (103) via a batcher, and the discharge end of the aggregate weighing hopper (103) is connected to the feed end of the centralized hopper (104); The concrete mixing system further comprises an ice-making building (2) arranged between the concrete mixing buildings (1), the ice-making building (2) comprising an ice-making building body (200), the ice-making building body (200) being provided with an ice-making machine (201), an ice storage bin (202) and a refrigeration main unit (206) in order from top to bottom, a bolt conveyor (203) being provided at the ice outlet of the ice storage bin (202), an ice flake weighing hopper (204) being provided at the discharge end of the bolt conveyor (203), an ice flake conveying belt (205) being provided at the discharge end of the ice flake weighing hopper (204), and the ice flake conveying belt (205) being connected at the discharge end to the corresponding feed end of the central hopper (104) of the concrete mixing building (1).

6. A concrete mixing station system according to claim 5, characterized in that: The mixing system also includes aggregate air cooling and cold water systems, which include: A containerized refrigeration host (3) connected to the air cooling device (111); A water chiller (4) connected to a refrigeration host (206); A pool (5) for storing water; There are a plurality of evaporative coolers (6), which are respectively connected to the containerized refrigeration host (3) and the refrigeration host (206).

7. A concrete mixing station system according to claim 6, characterized in that: Also included is a method for controlling the temperature of concrete, which includes calculating the concrete outlet temperature according to the type and initial temperature of the concrete raw materials; the formula is as follows ； in, is the concrete outlet temperature, are the mass, specific heat capacity and initial temperature of various ingredients in concrete, is the stirring heat, the normal value is 2550 kJ / m³, For ice amount, is the utilization rate of ice, fixed value 0.95, is the number of types of raw materials in concrete, The heat exchange amount between concrete and the external environment during the mixing process; Heat exchange capacity By formula Calculate, where is the surface heat transfer coefficient, is the contact area between concrete and the external environment, is the average temperature difference between concrete and the environment, , is the average temperature during concrete mixing, is the external environment temperature, is the stirring time; Determine whether the temperature control requirements are met based on the calculation results. If the temperature is higher than the target temperature, the temperature of aggregate and mixing water is lowered by adjusting the air cooling and ice making system; Then through the formula Calculate air cooling load ,in is the specific heat capacity of aggregate, is the aggregate mass flow rate, is the aggregate cooling range; By formula Calculate cooling air flow ,in is the air density, , are the inlet air enthalpy and outlet air enthalpy of the air cooler; By formula Calculating ice making load ,in is the specific heat capacity of water, is the mass flow rate of stirring water, The temperature reduction range of the mixing water; By formula Calculate ice quantity .

8. A concrete mixing station system according to claim 7, characterized in that: The method for controlling the temperature of concrete also includes a dynamic adjustment method, which optimizes the coordinated operation of the air cooling and ice making systems according to real-time data, including: Constructing a comprehensive evaluation function ,in , , , is the weight coefficient, and , is the aggregate cooling range, is the concrete production speed, is the ambient humidity, is the ambient temperature; according to The value determines the start of the air cooling and ice making system. When the air cooling system is activated, When the air cooling and ice making systems are started at the same time, and is a pre-set threshold; The weight coefficient , , , By collecting concrete temperature control data under different working conditions, the multivariate linear regression analysis method is used to fit the system energy consumption and temperature control accuracy as the objective function; The threshold and Determined through experimental testing and data analysis, different tests are performed in different production scenarios. Values, record the energy consumption and temperature control effects of the air cooling and ice making systems, and compare and analyze to obtain the values ​​that minimize system energy consumption and ensure temperature control accuracy; Real-time collection of aggregate temperature , concrete outlet temperature , Ambient temperature , Cold air temperature , concrete production speed , Ambient humidity The collected data is cleaned and normalized, and the potential relationship between the data is explored using correlation analysis methods. The operating parameters of the air cooling and ice making systems are adjusted in real time according to the analysis results. The formula is used Dynamically adjust the air cooling load using the formula Dynamically adjust ice making load.

9. A concrete mixing station system according to claim 8, characterized in that: The method of controlling concrete temperature also includes a machine learning driven method that can predict temperature control needs and achieve intelligent coordinated control of air cooling and ice making systems, including: Get aggregate temperature from historical production records and real-time production process , Ambient temperature , concrete mix ratio, concrete outlet temperature , air cooling and ice making system operating parameter data, clean and standardize the data, perform feature engineering, extract and construct relevant features, divide the data into training set, validation set and test set; use gradient descent algorithm to minimize the mean square error loss function To adjust the multivariate regression model Model parameters ,in is the sample size, is the actual concrete outlet temperature, Predict temperature for the model, adjust model hyperparameters using the validation set, evaluate model performance using the test set, predict temperature control requirements based on historical and real-time data, and provide adjustment strategies for air cooling and ice making systems; The reinforcement learning algorithm is used to dynamically optimize the air cooling and ice making coordination strategy. The formula is: ； in is the system status, To adjust the air cooling or ice making amount, is the reward value, which is calculated by the comprehensive reward function. The formula is ； is the actual temperature of the concrete outlet at the current moment, is the target temperature, is the actual energy consumption of the air cooling and ice making system at the current moment, is the baseline energy consumption, weight coefficient and Through experiments and actual operation data adjustment, the best balance between temperature control accuracy and energy efficiency is achieved; is the learning rate, is the discount factor.

10. A concrete mixing plant system according to any one of claim 9, characterized in that: The discharge weighing hopper (10) is provided with a weight sensor, the corridor belt (11) is provided with a speed and weight sensor, a temperature sensor is installed on the high-altitude loading inclined belt (12), the aggregate bin (102) is provided with a temperature sensor, a wind speed sensor is provided near the wind window of the aggregate bin (102), the centralized hopper (104) is provided with a temperature sensor, the ice maker (201) is provided with a temperature and liquid level sensor, the ice storage (202) is provided with a temperature sensor, the ice flake weighing hopper (204) is provided with a weight sensor, the inlet and outlet pipes of the containerized refrigeration host (3) are provided with temperature and pressure sensors respectively, the inlet and outlet pipes of the chiller (4) are provided with temperature and pressure sensors respectively, the water pool (5) is provided with a temperature and liquid level sensor, the inlet and outlet pipes of the evaporative cooling (6) are provided with a temperature sensor, and an ambient temperature sensor and an ambient humidity sensor are provided in the working area of ​​the mixing station; The mixing building (100) is also provided with: The mixing plant rotary hopper (101) has a discharge end that can be connected to the feed port of any aggregate bin (102) by rotation, and the discharge end of the high-altitude feeding inclined belt (12) penetrates the top of the concrete mixing plant (1) and is connected to the feed end of the mixing plant rotary hopper (101); An aggregate double-fork flap feeder (105), the feed end of which is connected to the discharge end at the bottom of the centralized hopper (104); There are two mixers (106), and the aggregate inlets of the two mixers (106) are respectively connected to the two discharge ends of the aggregate double-fork flap feeder (105); There are two concrete discharge hoppers (107), which are respectively connected to the discharge ports of the two mixers (106); A water and additive tank (108) is arranged beside the aggregate weighing hopper (103), and its discharge end is connected to the mixer (106) via a weighing device; A plurality of powder silos (109) are also provided on the side of the mixing building (100); the discharge end of the powder silo (109) is connected to a powder weighing hopper via a feeding screw; the discharge end of the powder weighing hopper is connected to a powder concentration hopper; the discharge end of the powder concentration hopper is connected to a powder double-fork flap feeder; and the two discharge ports of the powder double-fork flap feeder are respectively connected to two mixers (106).

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