A concrete mixing plant system

Abstract

The application provides a concrete mixing station system, comprising: an aggregate storage system comprising a plurality of bins separated by partition walls, the bottom of the bin being provided with a plurality of transversely-through box culverts, and the bottom wall of the bin being provided with an array of openings in communication with the opposite box culverts, the openings being provided with discharge weighing hoppers, the box culverts being provided with gallery belts coaxial therewith and located below the corresponding discharge weighing hoppers, and the feeding side of the bin being provided with a discharge platform higher than the bin and lower than the discharge road. Through the arrangement of the discharge platform, the gathering hopper, the distribution belt and the discharge trolley, the discharge and feeding processes are smoother, the material transfer time is reduced, the aggregate storage and conveying efficiency is improved, thereby speeding up the concrete production, and through the temperature control system, through accurate calculation and control, the production stagnation or adjustment time caused by temperature problems is reduced, the continuity of the production process is ensured, and the overall production efficiency of the mixing station is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of concrete production, in particular to a concrete mixing station system. BACKGROUND

[0002] In modern construction engineering, concrete as a key building material, its quality and performance plays a decisive role in the overall quality and safety of the project. And the concrete mixing station as the core place of production of concrete, its system design and operation directly affect the quality of concrete.

[0003] The traditional concrete mixing station system has some deficiencies in the aspects of aggregate storage, conveying and other links. In the aspect of aggregate storage, due to the unreasonable system layout, the unloading efficiency of the transport vehicle is slow, and the connection between the stock bin and the conveying equipment is not smooth, so the loader is needed for the aggregate feeding work, which seriously reduces the feeding efficiency, and at the same time makes the aggregate prone to spillage during conveying, which not only reduces the production efficiency, but also may cause material waste, resulting in low storage and use efficiency of the aggregate and affecting the mix proportion accuracy of the concrete. Therefore, a concrete mixing station system is proposed to solve the above problems. SUMMARY

[0004] The main purpose of the present application is to provide a concrete mixing station system, which solves the problem of low storage and use efficiency of aggregate in the traditional concrete mixing station system, which affects the mix proportion accuracy of concrete.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a concrete mixing station system, comprising:

[0006] An aggregate storage system, which comprises a plurality of stock bins separated by partition walls, the bottom of the stock bin is provided with a plurality of transversely penetrating box culverts, and the bottom wall of the stock bin is provided with an opening arrayed and connected with the opposite box culvert, the opening is provided with a discharging weighing hopper, the box culvert is provided with a gallery belt coaxial therewith and located below the corresponding discharging weighing hopper, the feeding side of the stock bin is provided with a discharging platform higher than it and lower than the discharging road, the discharging platform and the step of the discharging road are provided with a material gathering hopper corresponding to each stock bin, and a distribution belt is erected above each stock bin, the front end of the distribution belt is inclined, and the end is located below the discharging end of the corresponding material gathering hopper, and a discharging trolley is arranged on the distribution belt;

[0007] A concrete mixing system, which comprises one or more concrete mixing buildings;

[0008] A high-altitude feeding inclined belt, the number of which corresponds to the concrete mixing building, the feeding end of which longitudinally penetrates the box culvert and is located below the discharging end of the corresponding gallery belt, and the discharging end is connected with the top feeding end of the corresponding concrete mixing building.

[0009] In the preferred embodiment, a material guiding slope is arranged between the openings of the bottom wall of the bunker and between the openings and the partition wall, and the cross section of the material guiding slope connecting the openings is conical.

[0010] In the preferred embodiment, the feeding end of the overhead feeding inclined belt passes through the box culvert between the multiple bunkers, and a gallery belt is arranged in the box culvert on both sides of the overhead feeding inclined belt to receive the discharging of the corresponding discharging and weighing hopper, and the discharging end of the gallery belt is located above the feeding end of the corresponding overhead feeding inclined belt.

[0011] In the preferred embodiment, the concrete mixing building includes a mixing building body, multiple aggregate bunkers are arranged in the mixing building body, and a cold air fan platform is arranged outside the mixing building body at the position of the aggregate bunker, multiple cold air fan devices are arranged on the cold air fan platform, the air outlet of the air cooling device is connected to the aggregate bunker for loading stone materials through a cold air inlet channel, and a wind window is arranged on the aggregate bunker.

[0012] In the preferred embodiment, the discharging port of the aggregate bunker is connected to the feeding end of the centralized hopper through the feeder.

[0013] The concrete mixing system further 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 sequentially includes an ice maker, an ice storage warehouse and a refrigeration host machine from top to bottom, a screw bolt conveyor is arranged at the ice outlet of the ice storage warehouse, an ice flake weighing hopper is arranged at the discharging end of the screw bolt conveyor, an ice flake conveying belt is arranged at the discharging end of the ice flake weighing hopper, and the discharging end of the ice flake conveying belt is connected to the feeding end of the centralized hopper of the corresponding concrete mixing building.

[0014] In the preferred embodiment, the concrete mixing system further includes an aggregate air cooling and cold water system, which includes:

[0015] A container type refrigeration host machine connected to the air cooling device;

[0016] A cold water machine connected to the refrigeration host machine;

[0017] A water pool for water storage;

[0018] Multiple evaporation coolers connected to the container type refrigeration host machine and the refrigeration host machine.

[0019] In the preferred embodiment, a method for controlling the temperature of concrete is further included, which includes calculating the concrete outlet temperature according to the type and initial temperature of the concrete raw materials, and the formula is as follows

[0020] ;

[0021] Wherein, is the concrete outlet temperature, m, c, t0, respectively, are the mass, specific heat capacity and initial temperature of each ingredient in concrete, is the heat of mixing, constant 2550 kJ / m³, is the ice addition amount, is the ice utilization rate, fixed value 0.95, is the number of types of raw materials in concrete, is the heat exchange amount with the external environment during the concrete mixing process;

[0022] Heat exchange amount is calculated by the formula , wherein is the surface heat transfer coefficient, is the contact area of concrete with the external environment, is the average temperature difference between concrete and the environment, , is the average temperature of concrete during the mixing process, is the temperature of the external environment, is the mixing time;

[0023] According to the calculation results, it is determined whether the temperature control requirements are met. If the temperature is higher than the target temperature, the temperature of the aggregate and the mixing water is reduced by adjusting the air cooling and ice making system;

[0024] Then the air cooling load is calculated by the formula , wherein is the specific heat capacity of the aggregate, is the mass flow rate of the aggregate, is the temperature reduction range of the aggregate;

[0025] The air flow rate is calculated by the formula , wherein is the air density, , are the inlet and outlet enthalpy of the air cooler;

[0026] The ice making load is calculated by the formula , wherein is the specific heat capacity of water, is the mass flow rate of the mixing water, is the temperature reduction range of the mixing water;

[0027] The ice addition amount is calculated by the formula .

[0028] In the preferred embodiment, the method for controlling the temperature of concrete further comprises a dynamic adjustment method for optimizing the collaborative operation of the air cooling and ice making system according to real-time data, which comprises:

[0029] Construct a comprehensive evaluation function ,in , , , These are the weighting coefficients, and , The degree of cooling of aggregate, To increase concrete production speed, For ambient humidity, The ambient temperature;

[0030] according to The value determines the activation of the air-cooling and ice-making systems. At that time, only the air-cooled system is activated. At the same time, the air-cooling and ice-making systems are activated. and For a pre-set threshold;

[0031] The weighting coefficient , , , By collecting concrete temperature control data under different working conditions, the system energy consumption and temperature control accuracy were fitted using multiple linear regression analysis with the objective function as the objective function.

[0032] The threshold and Through experimental testing and data analysis, it was determined that different methods should be tested under different production scenarios. The value records the energy consumption and temperature control effect of the air-cooling and ice-making systems, and compares and analyzes the values ​​to obtain the minimum energy consumption of the system while ensuring the accuracy of temperature control.

[0033] 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. Correlation analysis is used to uncover potential relationships between the data, and the operating parameters of the air-cooling and ice-making systems are adjusted in real time based on the analysis results. Formulas are used... Dynamically adjust the air-cooled load using the formula Dynamically adjust the ice-making load.

[0034] In the preferred embodiment, the method for controlling concrete temperature also includes a machine learning-driven approach, which can predict temperature control requirements and achieve intelligent coordinated control of the air-cooling and ice-making systems, including:

[0035] Obtaining aggregate temperature from historical production records and real-time production process , ambient temperature , concrete mix proportion, concrete discharge temperature , operating parameter data of air cooling and ice making system, data cleaning, standardization processing, feature engineering, extraction and construction of related features, data division into training set, validation set and test set; using gradient descent algorithm, adjusting model parameters based on multiple regression model by minimizing the mean square error loss function , where is the number of samples, is the actual concrete discharge temperature, is the model predicted temperature, using the validation set to adjust the model hyperparameters, using the test set to evaluate the model performance, predicting the temperature control demand according to the historical data and real-time data, and providing adjustment strategy for air cooling and ice making system; Using reinforcement learning algorithm to dynamically optimize air cooling and ice making collaborative strategy, formula is

[0036]

[0037] ; Where

[0038] is the system state, is the action of adjusting the air cooling or ice making amount, is the reward value, calculated by comprehensive reward function, formula is

[0039] ;

[0040] is the actual temperature of concrete discharge at current time, is the target temperature, is the actual energy consumption of air cooling and ice making system at current time, is the baseline energy consumption, weight coefficients and are adjusted through experiments and actual operation data to achieve the best balance between temperature control accuracy and energy consumption efficiency; is the learning rate, is the discount factor.

[0041] ​In the preferred scheme, the discharge weighing hopper is provided with a weight sensor, the gallery belt is provided with a speed and weight sensor, the high-altitude feeding inclined belt is provided with a temperature sensor, the aggregate bin is provided with a temperature sensor, the aggregate bin air window is provided with a wind speed sensor, the centralized hopper is provided with a temperature sensor, the ice maker is provided with a temperature and liquid level sensor, the ice storage is provided with a temperature sensor, the ice flake weighing hopper is provided with a weight sensor, the inlet and outlet pipelines of the container-type refrigeration host are respectively provided with temperature and pressure sensors, the inlet and outlet pipelines of the water chiller are respectively provided with temperature and pressure sensors, the pool is provided with a temperature and liquid level sensor, the inlet and outlet pipelines of the evaporative cooler are provided with temperature sensors, and the environmental temperature sensor and the environmental humidity sensor are arranged in the working area of the mixing station.

[0042] The mixing building is also provided with:

[0043] The mixing building rotary funnel, the discharge end of which is connected with the feeding port of any aggregate bin through rotation, and the discharge end of the high-altitude feeding inclined belt penetrates into the top of the concrete mixing building and is connected with the feeding end of the mixing building rotary funnel.

[0044] The aggregate double-fork flap feeder, the feeding end of which is connected with the discharge end of the centralized hopper bottom.

[0045] The number of mixers is two, and the aggregate inlets of the two mixers are respectively connected with the two discharge ends of the aggregate double-fork flap feeder.

[0046] The number of concrete discharge hoppers is two, and the two discharge hoppers are respectively connected with the discharge ports of the two mixers.

[0047] The water and additive tank is arranged beside the aggregate weighing hopper, and the discharge end thereof is connected with the mixer through a weighing device.

[0048] The side surface of the mixing building is also provided with a plurality of powder silos, the discharge end of the powder silo is connected with the powder weighing hopper through a feeding screw, the discharge end of the powder weighing hopper is connected with the powder centralized hopper, the discharge end of the powder centralized hopper is connected with the powder double-fork flap feeder, and the two discharge ports of the powder double-fork flap feeder are respectively connected with the two mixers.

[0049] The present application provides a concrete mixing station system, through the arrangement of the discharge platform, the discharge hopper, the distribution belt and the discharge trolley, the discharge and feeding processes are more smooth, the material transfer time is reduced, the aggregate storage and conveying efficiency is improved, thereby the concrete production speed is accelerated, meanwhile, through the temperature control system, through accurate calculation and control, the production stagnation or adjustment time caused by temperature problems is reduced, the continuity of the production process is ensured, and the production efficiency of the mixing station is improved as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0050] The present application will be further described below in combination with the drawings and examples:

[0051] Figure 1 is the overall structure of the present application top view;

[0052] Figure 2 is the aggregate storage system of the present application cross-sectional structure diagram;

[0053] Figure 3 is the concrete mixing system and high-altitude feeding inclined belt connection structure cross-sectional view of the present application;

[0054] Figure 4 is the concrete mixing system cross-sectional structure diagram of the present application;

[0055] Figure 5 is the concrete mixing building structure diagram of the present application;

[0056] Figure 6 is the concrete mixing building top view structure diagram of the present application;

[0057] Figure 7 is the ice making building structure diagram of the present application;

[0058] Fig. Concrete mixing building 1; mixing building body 100; mixing building rotary hopper 101; aggregate bin 102; aggregate weighing hopper 103; centralized hopper 104; aggregate double fork flip plate feeder 105; mixer 106; concrete discharge hopper 107; water, additive tank 108; powder silo 109; cold air machine platform 110; air cooling equipment 111; ice making building 2; ice making building body 200; ice maker 201; ice storage 202; bolt conveyor 203; ice flake weighing hopper 204; ice flake conveying belt 205; refrigeration main machine 206; container type refrigeration main machine 3; water chiller 4; water tank 5; evaporative cooling 6; partition wall 7; silo 8; box culvert 9; discharge weighing hopper 10; corridor belt 11; high-altitude feeding inclined belt 12; unloading platform 13; gathering hopper 14; distributing belt 15; unloading trolley 16; guide slope 17. DETAILED DESCRIPTION

[0059] Example 1

[0060] As Figures 1-7As shown, a concrete mixing station system comprises an aggregate storage system, a concrete mixing system and a high-altitude feeding inclined belt 12, wherein the aggregate storage system comprises a plurality of bins 8 separated by partition walls 7 for storing aggregates of different specifications, the bottom of each bin 8 is provided with a plurality of transversely penetrating box culverts 9, and the bottom wall of each bin 8 is provided with openings in an array and in communication with the corresponding box culverts 9, and each opening is provided with a discharging weighing hopper 10, and a guide slope 17 is arranged between the openings of the bottom wall of each bin 8 and between the openings and the partition walls 7, wherein the guide slope 17 connected between the openings is tapered in cross section, facilitating the smooth flow of aggregates into the discharging weighing hopper 10 under the action of gravity, improving the discharging efficiency and reducing the residue of aggregates, and the box culvert 9 is provided with a gallery belt 11 coaxial with the box culvert 9 and located below the corresponding discharging weighing hopper 10, and the aggregates discharged from the discharging weighing hopper 10 can be conveyed through the gallery belt 11, and since the gallery belt 11 is arranged in the box culvert 9 and transversely penetrates the bin 8, the aggregates in different bins 8 can be conveyed.

[0061] A discharging platform 13 higher than the bin 8 and lower than the discharging road is arranged at the feeding side of the bin 8, and the discharging platform 13 is provided with a material gathering hopper 14 corresponding to each bin 8 at the step of the discharging road, and a distributing belt 15 is arranged above each bin 8, the front end of the distributing belt 15 is inclined, and the end is located below the discharging end of the corresponding material gathering hopper 14, and a discharging trolley 16 is arranged on the distributing belt 15.

[0062] In this way, the transport vehicle can directly discharge above the material gathering hopper 14 by using the height difference, the aggregates first fall into the material gathering hopper 14, and then are conveyed to the corresponding bin 8 through the distributing belt 15, the discharging trolley 16 on the distributing belt 15 can distribute the aggregates to different bins 8 as needed, and finally the aggregates are discharged through the discharging weighing hopper 10 arranged in the bin 8.

[0063] The concrete mixing system comprises one or more concrete mixing buildings 1, and in this embodiment, the number of concrete mixing buildings 1 is two, and the concrete mixing work can be carried out simultaneously.

[0064] The high-altitude feeding inclined belt 12, the number of high-altitude feeding inclined belts 12 corresponds to the concrete mixing building 1, the feeding end of the high-altitude feeding inclined belt 12 longitudinally penetrates the box culvert 9 and is located below the discharging end of the corresponding gallery belt 11, and the discharging end is connected with the top feeding end of the corresponding concrete mixing building 1, so that the aggregates discharged from the discharging weighing hopper 10 can be received and conveyed to the feeding end of the high-altitude feeding inclined belt 12 and then to the corresponding concrete mixing building 1.

[0065] It should be noted that the number of high-altitude feeding inclined belts 12 in the embodiment is two, corresponding to two concrete mixing buildings 1, and the top view angle is L-shaped, which can effectively save land occupation. The feeding ends of the two high-altitude feeding inclined belts 12 pass through the box culvert 9 between the multiple silos 8, and the box culvert 9 on both sides of the high-altitude feeding inclined belt 12 is provided with a gallery belt 11 for receiving the discharge of the corresponding discharge weighing hopper 10. The discharge end of the gallery belt 11 is located above the feeding end of the corresponding high-altitude feeding inclined belt 12. The gallery belt 11 in the box culvert 9 is specifically divided into two groups, and the discharge ends of the two groups of gallery belts 11 correspond to the two high-altitude feeding inclined belts 12, so as to lift and transport the aggregate to the concrete mixing building 1. Secondly, the design of the high-altitude feeding inclined belt 12 passing through the multiple silos 8 from the middle facilitates simultaneous feeding from both sides, which can effectively improve the conveying efficiency.

[0066] Further, the concrete mixing building 1 comprises a mixing building body 100, and a plurality of aggregate bins 102 are arranged in the mixing building body 100 for temporarily storing the aggregate conveyed by the high-altitude feeding inclined belt 12. In the embodiment, the number of aggregate bins 102 is six, including two large stone bins, one small stone bin, one medium stone bin, and two sand bins, and a cold air fan platform 110 is arranged outside the aggregate bins 102. A plurality of cold air fan devices 111 are arranged on the cold air fan platform 110. The air outlet of the air cooling device 111 is connected to the aggregate bin 102 for storing stone through a cold air inlet passage, and the aggregate bin 102 is provided with a window.

[0067] In this way, cold air is blown into the aggregate bin 102 through the cold air inlet passage to cool the aggregate. The windows on the aggregate bin 102 can uniformly distribute the cold air in the aggregate bin 102, improving the cooling effect. In the embodiment, the number of air cooling devices 111 is four, corresponding to four aggregate bins for storing stone. In addition, the air cooling device 111 is composed of a cold air cooler and a cold air fan.

[0068] Further, the discharge port of the aggregate bin 102 is connected to the discharge port of the aggregate weighing hopper 103 through a batching device. The batching device accurately controls the discharge amount of the aggregate. The discharge end of the aggregate weighing hopper 103 is connected to the inlet end of the centralized hopper 104. The aggregate weighing hopper 103 weighs and measures the aggregate, and the centralized hopper 104 is used to concentrate and mix the aggregate.

[0069] Further, the concrete mixing system further comprises an ice making building 2 arranged between the concrete mixing buildings 1, the ice making building 2 comprises an ice making building body 200, the ice making building body 200 is sequentially provided with an ice maker 201, an ice storage 202 and a refrigeration host 206 from top to bottom, a bolt conveyor 203 is arranged at an ice outlet of the ice storage 202, an ice flake weighing hopper 204 is arranged at an outlet end of the bolt conveyor 203, an ice flake conveying belt 205 is arranged at an outlet end of the ice flake weighing hopper 204, and the outlet end of the ice flake conveying belt 205 is connected with the feeding end of the centralized hopper 104 of the corresponding concrete mixing building 1.

[0070] In this way, the flake ice in the ice storage 202 can be conveyed to the ice flake weighing hopper 204 through the bolt conveyor 203, accurately weighed and measured, and then conveyed to the centralized hopper 104 of the concrete mixing building 1 through the ice flake conveying belt 205, and then enters the mixer 106 together with other materials.

[0071] In the preferred embodiment, the concrete mixing system further comprises an aggregate air cooling and cold water system, which comprises:

[0072] The container type refrigeration host 3 is connected with the air cooling equipment 111 to provide a cold source for the air cooling system and reduce the temperature of the aggregate.

[0073] The water chiller 4 is connected with the refrigeration host 206 to prepare low-temperature water for concrete production.

[0074] The water tank 5 is used for water storage.

[0075] The number of the evaporative coolers 6 is multiple, and each is connected with the container type refrigeration host 3 and the refrigeration host 206 to enhance the refrigeration effect.

[0076] Further, the mixing building body 100 further comprises:

[0077] The mixing building rotary hopper 101 is connected with the feeding port of any aggregate bin 102 through rotation at the outlet end, the outlet end of the high-altitude feeding inclined belt 12 penetrates into the top of the concrete mixing building 1 and is connected with the feeding end of the mixing building rotary hopper 101, so as to convey the aggregate to the concrete mixing building 1 and guide the aggregate into the corresponding aggregate bin 102 through the mixing building rotary hopper 101.

[0078] The aggregate double-fork flap feeder 105 is connected with the outlet end of the bottom of the centralized hopper 104.

[0079] The number of the mixers 106 is two, and the aggregate inlets of the two mixers 106 are respectively connected with the two outlet ends of the aggregate double-fork flap feeder 105.

[0080] Concrete discharge hopper 107, the number of two, respectively with two mixer 106 discharge port connected.

[0081] Thus designed, after the aggregate can be weighed into the aggregate hopper 104 into the aggregate double fork flap feeder 105, the aggregate double fork flap feeder 105 will be distributed to two mixers 106 in the aggregate.

[0082] Water, admixture tank 108, set in the aggregate weighing hopper 103 side, its discharge end through the weighing device and mixer 106 connected;

[0083] Mixing building 100 side is also provided with a plurality of powder silo 109, powder silo 109 discharge end through the feed screw connected powder weighing hopper, powder weighing hopper discharge end connected with powder hopper, powder hopper discharge end connected with powder double fork flap feeder, powder double fork flap feeder two discharge port respectively with two mixers 106 connected.

[0084] Thus designed, water, admixture tank 108 in the water and admixture through the weighing device also according to the proportion of the mixer 106, a plurality of powder silo 109 in the cement, fly ash and other powder through the feed screw, powder weighing hopper, powder hopper and powder double fork flap feeder also joined the mixer 106, two mixers 106 on the material for forced mixing, after mixing, concrete through the concrete discharge hopper 107 unloading to transport equipment.

[0085] Need to explain, the above equipment are commonly used in the art of equipment, therefore not in this detailed description.

[0086] Example 2

[0087] In combination with example 1 further illustrates, also includes a method for controlling the temperature of concrete, which includes according to the kind and initial temperature of concrete raw materials, calculate the concrete outlet temperature; The formula is as follows

[0088] ;

[0089] Wherein, is the concrete outlet temperature, respectively, the mass of various ingredients in the concrete, specific heat capacity and initial temperature, is the mixing heat, constant 2550 kJ / m³, is the ice amount, is the utilization rate of ice, fixed value 0.95, is the number of kinds of raw materials in the concrete, is the heat exchange amount with the outside environment in the concrete mixing process.

[0090] Heat exchange amount Through formula Calculation, where The surface heat transfer coefficient, The contact area between concrete and the external environment. The average temperature difference between the concrete and the environment. , This represents the average temperature during the concrete mixing process. The ambient temperature, This refers to the stirring time.

[0091] 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 the aggregate and mixing water is reduced by adjusting the air cooling and ice-making systems.

[0092] Then through the formula Calculate air cooling load ,in The specific heat capacity of the aggregate, For aggregate mass flow rate, The range of temperature reduction for aggregates;

[0093] Through formula Calculate the airflow rate ,in air density, , The inlet and outlet enthalpies of the air cooler;

[0094] Through formula Calculate ice-making load ,in The specific heat capacity of water, This refers to the mass flow rate of the water used for mixing. The temperature drop of the water used for mixing;

[0095] Through formula Calculate the amount of ice to add .

[0096] For example, when producing C25 and C30 concrete at this mixing plant, the concrete mix proportions (e.g., 134 kg of cement and 80 kg of fly ash in C25 concrete) and the specific heat capacity and initial temperature of each raw material (e.g., initial cement temperature of 55°C) are combined with the mixing heat. Ice utilization rate Parameters such as these are used to calculate the concrete outlet temperature. If the calculated temperature is higher than the target temperature (e.g., ≤16°C in summer), the air cooling and ice-making system is activated to cool it down.

[0097] Example 3

[0098] To further illustrate with Example 2, the method for controlling concrete temperature also includes a dynamic adjustment method, which optimizes the coordinated operation of the air-cooling and ice-making systems based on real-time data, including:

[0099] Construct a comprehensive evaluation function ,in , , , These are the weighting coefficients, and , The degree of cooling of aggregate, To increase concrete production speed, For ambient humidity, Ambient temperature;

[0100] according to The value determines the activation of the air-cooling and ice-making systems. At that time, only the air-cooled system is activated. At the same time, the air-cooling and ice-making systems are activated. and For a pre-set threshold;

[0101] The weighting coefficient , , , By collecting concrete temperature control data under different working conditions, and using multiple linear regression analysis with system energy consumption and temperature control accuracy as objective functions, the following results were obtained: For example, by analyzing the aggregate temperature drop in a large amount of production data. Concrete production speed Ambient humidity Ambient temperature Determine appropriate weighting coefficients based on the relationship between system energy consumption and temperature control accuracy.

[0102] The threshold and Through experimental testing and data analysis, it was determined that different methods should be tested under different production scenarios. The value records the energy consumption and temperature control effect of the air-cooling and ice-making systems, and compares and analyzes the values ​​to obtain the minimum energy consumption of the system while ensuring the accuracy of temperature control.

[0103] Real-time collection of aggregate temperature Concrete outlet temperature Ambient temperature Cold air temperature Concrete production speed Ambient humidity Data, the collected data is cleaned, outliers are removed, such as removing temperature data that deviates from the normal range, normalized processing, converting data to a unified scale, facilitating subsequent calculation and analysis, using correlation analysis method to mine the potential relationship between data, such as analyzing the correlation between ambient temperature and aggregate temperature, and adjusting the operation parameters of the air cooling and ice making system in real time according to the analysis results.

[0104] The formula is: ; dynamically adjust the air cooling load.

[0105] The formula is dynamically adjust the ice making load.

[0106] In this embodiment, the operation of the air cooling and ice making system is adjusted according to real-time data through dynamic optimization control scheme, which avoids unnecessary energy consumption, such as reasonably reducing air cooling or ice making amount when the ambient temperature is low or the aggregate temperature is close to the target temperature, and improves the energy utilization efficiency.

[0107] Example 4

[0108] In combination with Examples 2 and 3, it is further illustrated that the method for controlling the temperature of concrete also includes a machine learning driven method, which can predict the temperature control demand and realize intelligent collaborative control of the air cooling and ice making system, which includes:

[0109] Obtain the aggregate temperature from historical production records and real-time production process , ambient temperature , concrete mix proportion, concrete outlet temperature , operation parameter data of air cooling and ice making system, clean and standardize the data to make the data conform to the normal distribution, improve the model training effect, perform feature engineering, extract and construct related features, such as the trend of ambient temperature as a feature, divide the data into training set, validation set and test set; using gradient descent algorithm, adjust the model parameters based on multivariate regression model by minimizing the mean square error loss function , wherein is the number of samples, is the actual concrete outlet temperature, is the model predicted temperature, use the validation set to adjust the model hyperparameters such as learning rate, regularization parameter, etc. to prevent overfitting, use the test set to evaluate the model performance, ensure that the model has good generalization ability on new data, predict the temperature control demand according to historical data and real-time data, and provide adjustment strategy for air cooling and ice making system.

[0110] Use reinforcement learning algorithm to dynamically optimize air cooling and ice making collaborative strategy, the formula is

[0111] ​ ;

[0112] wherein is the system state, is the action of adjusting the air cooling or ice making amount, is the reward value, calculated by the comprehensive reward function, the formula is

[0113] ;

[0114] is the actual temperature of the concrete at the outlet of the machine at the current time, is the target temperature, is the actual energy consumption of the air cooling and ice making system at the current time, is the reference energy consumption, the weight coefficient and adjusted through experiments and actual operation data to achieve the best balance between temperature control accuracy and energy consumption efficiency; is the learning rate, is the discount factor, which continuously optimizes the control strategy of the system according to the reward value, realizes intelligent collaborative control of the air cooling and ice making system, and maximizes energy saving efficiency.

[0115] In this embodiment, through the machine learning driven advanced optimization scheme, the air cooling and ice making system is intelligently controlled in collaboration by predicting the temperature control demand, further optimizing the energy consumption, so that the system maximizes the reduction of energy consumption under the premise of meeting the temperature control requirements

[0116] Embodiment 5

[0117] Further illustrated in combination with embodiments 1-3, in order to realize the above-mentioned temperature control method, the weight sensor on the discharging weighing hopper 10 monitors the weight of the aggregate in the discharging weighing hopper 10 in real time, providing data support for accurate batching, and ensuring the accuracy of the concrete mix proportion. The speed sensor and the weight sensor on the gallery belt 11 are used in cooperation, the speed sensor monitors the running speed of the gallery belt 11, and the weight sensor monitors the weight of the aggregate on the belt, and the two are combined to calculate the aggregate mass flow, providing key parameters for air cooling load calculation. The temperature sensor on the high-altitude feeding inclined belt 12 monitors the temperature change of the aggregate during the feeding process, so as to timely grasp the temperature state of the aggregate and provide real-time data for temperature control calculation.

[0118] The temperature sensor in the aggregate bin 102 monitors the aggregate temperature in real time, providing basis for the operation control of the air cooling system, and ensuring that the aggregate temperature meets the requirements. The air speed sensor near the air window of the aggregate bin 102 monitors the air speed, evaluates the effect of the air cooling system, and adjusts the operating parameters of the air cooler. The temperature sensor on the centralized hopper 104 measures the temperature of the mixed material before entering the mixing link, providing reference for the prediction and control of the concrete outlet temperature.

[0119] The temperature sensor and the liquid level sensor on the ice maker 201 monitor the ice making temperature and the water level respectively to ensure the normal operation of the ice making process. The temperature sensor in the ice storage 202 monitors the ice storage temperature to prevent the melting loss of ice and ensure the accurate ice adding amount. The weight sensor on the ice weighing hopper 204 accurately measures the ice adding amount to provide accurate data for temperature control calculation.

[0120] The temperature and pressure sensors on the inlet and outlet pipelines of the container type refrigeration host 3, the temperature and pressure sensors on the inlet and outlet pipelines of the water chiller 4, and the temperature sensors on the inlet and outlet pipelines of the evaporative cooling 6, real-time monitor the operating parameters of each part of the refrigeration system, such as refrigerant temperature, pressure, etc., to ensure the stable operation of the refrigeration system and timely find out hidden troubles. The temperature sensor and the liquid level sensor in the water tank 5 monitor the water temperature and the water level in the water tank to ensure that the water chiller has enough water supply and the water temperature meets the requirements.

[0121] The environmental temperature sensor and the environmental humidity sensor in the working area of the mixing station real-time monitor the environmental temperature and humidity to provide 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 the environmental changes.

[0122] During the operation of the whole concrete mixing station system, each part works cooperatively, the sensors real-time monitor the data, and the temperature control method calculates and decides according to the data to realize the accurate control of the concrete temperature, improve the concrete production quality and efficiency, and optimize the energy utilization.

[0123] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The protection scope of the present application should be based on the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present application.

Claims

1. A concrete mixing plant system, characterized in that The application relates to a concrete mixing system, which comprises a bone material storage system, one or more concrete mixing buildings and high-altitude feeding inclined belts. The bone material storage system comprises a plurality of bins (8) separated by partition walls (7), the bottom of each bin (8) is provided with a plurality of transversely-penetrating box culverts (9), and the bottom wall of each bin (8) is provided with a plurality of openings arranged in an array and connected with the corresponding box culverts (9); a discharging and weighing hopper (10) is arranged in each opening; a gallery belt (11) is arranged in each box culvert (9) and coaxial with the box culvert (9) and located below the corresponding discharging and weighing hopper (10); a discharging platform (13) is arranged on the feeding side of each bin (8) and is higher than the bin (8) and lower than a discharging road; a material gathering hopper (14) corresponding to each bin (8) is arranged at the step of the discharging platform (13) and the discharging road; a material distributing belt (15) is arranged above each bin (8); the front end of the material distributing belt (15) is inclined, and the end is located below the discharging end of the corresponding material gathering hopper (14); and a discharging trolley (16) is arranged on the material distributing belt (15). The concrete mixing system comprises one or more concrete mixing buildings (1). The high-altitude feeding inclined belts (12) are in a number corresponding to the concrete mixing buildings (1), the feeding end of each high-altitude feeding inclined belt (12) longitudinally penetrates the box culvert (9) and is located below the discharging end of the corresponding gallery belt (11), and the discharging end is connected with the top feeding end of the corresponding concrete mixing building (1). The concrete mixing building (1) comprises a mixing building body (100), a plurality of bone material bins (102) are arranged in the mixing building body (100), and a cold air fan platform (110) is arranged outside the mixing building body (100) and located at the bone material bin (102); a plurality of air cooling devices (111) are arranged on the cold air fan platform (110); the air outlet of the air cooling device (111) is connected with the bone material bin (102) for loading stone materials through a cold air inlet channel; and a wind window is arranged on the bone material bin (102). The discharging end of the bone material weighing hopper (103) is connected with the feeding end of a centralized material 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) comprises an ice making building body (200), which is sequentially provided with an ice making machine (201), a storage ice warehouse (202) and a refrigeration host (206) from top to bottom; a bolt conveyor (203) is arranged at the ice discharging position of the storage ice warehouse (202); an ice flake weighing hopper (204) is arranged at the discharging end of the bolt conveyor (203); an ice flake conveying belt (205) is arranged at the discharging end of the ice flake weighing hopper (204); and the discharging end of the ice flake conveying belt (205) is connected with the feeding end of the centralized material hopper (104) of the corresponding concrete mixing building (1).

2. A concrete batching plant system according to claim 1, characterised in that: A material guiding slope (17) is arranged between the openings of the bottom wall of the bin (8) and between the openings and the partition wall (7); the material guiding slope (17) is conical in section.

3. A concrete batching plant system according to claim 1, characterised in that: The feeding end of the high-altitude feeding inclined belt (12) passes through the box culvert (9) between the multiple material bins (8), and the box culvert (9) on both sides of the high-altitude feeding inclined belt (12) is provided with a gallery belt (11) for receiving the discharging of the corresponding discharging weighing hopper (10), and the discharging end of the gallery belt (11) is located above the feeding end of the corresponding high-altitude feeding inclined belt (12).

4. A concrete batching plant system as claimed in claim 1, wherein the concrete The mixing system further comprises an aggregate air cooling and cold water system, which comprises: A container type refrigeration host (3) connected with the air cooling device (111); A water chiller (4) connected with the refrigeration host (206); A water pool (5) for water storage; Multiple evaporation colds (6) connected with the container type refrigeration host (3) and the refrigeration host (206) respectively.

5. A concrete batching plant system according to claim 4, characterised in that: The method for controlling the temperature of concrete further comprises a dynamic adjustment method for optimizing the cooperative operation of the air cooling and ice making systems according to real-time data, which comprises: ； wherein, Tout is the temperature of the concrete outlet, m, c and T0 are the mass, specific heat capacity and initial temperature of each ingredient in the concrete, respectively, is the mixing heat, a constant value of 2550 kJ / m3, is the ice addition amount, is the ice utilization rate, a fixed value of 0.95, is the number of types of raw materials in the concrete, is the heat exchange amount with the external environment during the concrete mixing process; Heat exchange amount By the formula wherein is the surface heat transfer coefficient, is the contact area of the concrete with the environment, is the average temperature difference of the concrete with the environment, , is the average temperature during the mixing of the concrete, is the temperature of the environment, is the mixing time; According to the calculation result, it is judged whether the temperature control requirement is met, if If the temperature is higher than the target temperature, the temperature of the aggregate and the mixing water is reduced by adjusting the air cooling and the ice making system. The air cooling load is then calculated by the formula wherein is the specific heat capacity of the aggregate, is the aggregate mass flow rate, is the aggregate temperature drop.​ Through formula Calculate the airflow rate ,in air density, , The inlet and outlet enthalpies of the air cooler; Through formula Calculate ice-making load ,in The specific heat capacity of water, This refers to the mass flow rate of the water used for mixing. The temperature drop of the water used for mixing; The ice addition amount is calculated by the formula .​ 6. A concrete batching plant system according to claim 5, characterised in that: The method for controlling the temperature of concrete further comprises a machine learning driven method for predicting the temperature control demand and realizing intelligent cooperative control of the air cooling and ice making systems, which comprises: Constructing a comprehensive evaluation function wherein , , , are weight coefficients, and , is the aggregate cooling amplitude, is the concrete production speed, is the ambient humidity, is the ambient temperature; According to the value decides whether the air cooling and ice making system is started, when the air cooling system is started only, when the air cooling and ice making system is started simultaneously, and and is a pre-set threshold value. The weight coefficient 、 、 、 By collecting the concrete temperature control data under different working conditions, using multiple linear regression analysis method, the system energy consumption and temperature control accuracy are taken as objective function to fit; The threshold value And Through experimental testing and data analysis, different Values are tested under different production scenarios, and the energy consumption and temperature control effect of the air cooling and ice making system are recorded. Comparative analysis shows that the value that makes the system energy consumption lowest and ensures the temperature control accuracy; Real-time acquisition of aggregate temperature , concrete outlet temperature , ambient temperature , cold air temperature , concrete production speed , ambient humidity Data, the collected data is cleaned, normalized, and the potential relationship between the data is mined by correlation analysis method, and the running parameters of the air cooling and ice making system are adjusted in real time according to the analysis result; the formula Dynamic adjustment of air cooling load, the formula Dynamic adjustment of ice making load.

7. A concrete batching plant system according to claim 6, characterised in that: The method for controlling the temperature of concrete further comprises a machine learning driven method for predicting the temperature control demand and realizing intelligent cooperative control of the air cooling and ice making systems, which comprises: Aggregate temperature is obtained from historical production records and real-time production processes. Ambient temperature Concrete mix proportions and concrete outlet temperature The operating parameter data of the air-cooling and ice-making systems were cleaned, standardized, and feature-engineered to extract and construct relevant features. The data was then divided into training, validation, and test sets. A gradient descent algorithm was employed to minimize the mean squared error loss function. To adjust based on the multiple regression model Model parameters ,in For the sample size, This refers to the actual temperature at the concrete outlet. To predict temperature for the model, the model hyperparameters are adjusted using the validation set, and the model performance is evaluated using the test set. Temperature control requirements are predicted based on historical and real-time data, providing adjustment strategies for air-cooled and ice-making systems. The formula for dynamically optimizing the air cooling and ice making cooperative strategy by using a reinforcement learning algorithm is ； wherein is the system state, is the action to adjust the air cooling or ice making amount, is the reward value, calculated by the integrated reward function, the formula is ； is the actual temperature of the concrete at the current time, is the target temperature, is the actual energy consumption of the air cooling and ice making system at the current time, is the reference energy consumption, weight coefficient and adjusted by experiments and actual operation data to achieve the best balance between temperature control accuracy and energy consumption efficiency; is the learning rate, is the discount factor.

8. A concrete batching plant system according to claim 7, characterised in that: The discharging weighing hopper (10) is provided with a weight sensor, the gallery belt (11) is provided with speed and weight sensors, the high-altitude feeding inclined belt (12) is provided with a temperature sensor, the aggregate bin (102) is provided with a temperature sensor, the aggregate bin (102) is provided with a wind speed sensor near the air window, the centralized material hopper (104) is provided with a temperature sensor, the ice maker (201) is provided with temperature and liquid level sensors, 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 pipelines of the container type refrigeration host (3) are respectively provided with temperature and pressure sensors, the inlet and outlet pipelines of the water chiller (4) are respectively provided with temperature and pressure sensors, the water pool (5) is provided with temperature and liquid level sensors, and the inlet and outlet pipelines of the evaporation cold (6) are provided with temperature sensors. The mixing building (100) is further provided with: The mixing building rotary funnel (101) has a discharging end connectable with the feeding port of any aggregate bin (102) through rotation, and the discharging end of the high-altitude feeding inclined belt (12) penetrates into the top of the concrete mixing building (1) and is connected with the feeding end of the mixing building rotary funnel (101); The aggregate double-fork flap feeder (105) has a feeding end connected with the discharging end at the bottom of the centralized material hopper (104); The two mixers (106) have aggregate inlets connected with the two discharging ends of the aggregate double-fork flap feeder (105) respectively; The two concrete discharging hoppers (107) are connected with the discharging ports of the two mixers (106) respectively; The water and additive tank (108) is arranged beside the aggregate weighing hopper (103), and the discharging end thereof is connected with the mixer (106) through a weighing device. The side surface of the mixing building (100) is further provided with a plurality of powder silos (109), the discharge end of the powder silo (109) is connected with a powder weighing hopper through a feeding screw, the discharge end of the powder weighing hopper is connected with a powder collecting hopper, the discharge end of the powder collecting hopper is connected with a powder double-fork flap feeder, and the two discharge ports of the powder double-fork flap feeder are respectively connected with two mixers (106).

Images