Intelligent environment-friendly concrete stirring system

Abstract

The utility model relates to an intelligent environment-friendly concrete stirring system, which belongs to the technical field of concrete production, and comprises a storage unit, a stirring unit, a stirring unit, a stirring unit and a control unit, and is characterized in that the storage unit comprises a plurality of silos for storing aggregates, powder, additives and water; the stirring unit is a stirrer for stirring and producing concrete; the transportation unit is used for transporting the raw materials stored in the storage unit to the stirring unit; the waste residue recovery unit is used for recovering waste residues generated by the stirrer and waste residues adhered to tires of the engineering vehicle and pressing the waste residues into bricks; the waste heat recovery unit is used for recovering waste heat generated by the powder tank and the stirrer, and the waste heat is used for concrete raw material preheating or living quarter heating or power generation in winter; and the control unit is used for controlling and monitoring the work of each unit and generating a carbon footprint report according to the consumption and output of each unit. The system simultaneously recovers waste residues generated by a stirrer and waste residues carried by tires of engineering vehicles, and solves the problem of lack of vehicle waste residue treatment in a traditional scheme.

Description

TECHNICAL FIELD

[0001] The utility model belongs to concrete production technical field especially relates to an intelligent environmental protection concrete stirring system. BACKGROUND

[0002] In the concrete mixing station, the mixer may produce waste residues in the long-term operation process, and the waste residues mainly include metal wear debris, oil stains, concrete lumps and the like. These waste residues may affect the equipment life and the concrete quality, and need to be cleaned up in time and properly treated.

[0003] In the prior art, Chinese patent application CN110757644A discloses a brick production line for recycling waste materials of concrete cleaning, which recycles waste residues of the mixer through a sandstone separator, but the patent only considers the waste residues of the mixer. The tires of the construction vehicles also carry a large amount of waste residues due to long-time running in the construction site, and the operation of the construction vehicles is affected when the waste residues are adhered to the tires, and the cleanliness of the construction road is affected.

[0004] Therefore, how to simultaneously recycle the waste residues of the mixer and the construction vehicles and recycle them is a technical problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies in the prior art, the utility model provides an intelligent environmental protection concrete stirring system, which not only can improve the cleanliness of the production environment, but also can create additional economic value through waste residue recycling and waste heat recovery, and realize the dual goals of environmental protection and cost saving.

[0006] The utility model provides an intelligent environmental protection concrete stirring system, which comprises:

[0007] The storage unit comprises a plurality of silos for storing aggregates, powders, admixtures and water;

[0008] The stirring unit is connected with the storage unit and comprises a mixer for stirring the production of concrete;

[0009] The transportation unit is used for transporting the raw materials stored in the storage unit to the stirring unit;

[0010] The waste residue recycling unit is used for recycling the waste residues generated by the mixer and the waste residues adhered to the tires of the construction vehicles, and pressing the waste residues into bricks;

[0011] The waste heat recovery unit is connected with the powder tank and the mixer respectively, and is used for recycling the waste heat generated by the powder tank and the mixer, and using the waste heat for preheating the concrete raw materials in winter or heating the living area;

[0012] A control unit is in communication connection with the storage unit, the stirring unit, the transportation unit, the waste residue recycling unit and the waste heat recycling unit respectively; the control unit is used for controlling and monitoring the work of each unit, and generating a carbon footprint report according to the consumption and output of each unit.

[0013] The technical scheme can not only improve the cleanliness of the production environment, but also create additional economic value through waste residue recycling and waste heat recycling, and realize the dual goals of environmental protection and cost saving.

[0014] In some embodiments, the waste residue recycling unit comprises:

[0015] A sandstone separator is used for washing and separating the waste residue generated by the stirring machine;

[0016] A wheel washing machine is used for washing the waste residue adhered to the tires of the engineering vehicle;

[0017] A cyclone is connected to the wheel washing machine and used for separating the waste residue adhered to the tires of the engineering vehicle after washing;

[0018] A filter membrane is connected to the sandstone separator and the cyclone respectively and used for filtering the waste residue to obtain reusable brick-making raw materials. Through the multi-stage processing of the sandstone separator, the wheel washing machine, the cyclone and the filter membrane, the sandstone, mud and other components in the waste residue are efficiently separated and purified, ensuring the purity and stability of the brick-making raw materials; the cyclone can recycle fine particles in the vehicle washing wastewater, and the filter membrane further removes impurities, so that the waste residue is converted into regenerated building material raw materials with high cost performance, while reducing sewage discharge and meeting the requirements of environmental protection construction.

[0019] In some embodiments, the waste heat recycling unit comprises:

[0020] A heat pipe device is connected to the powder tank and the stirring machine respectively and used for transmitting and storing the waste heat of the powder tank and the stirring machine;

[0021] A temperature scanner is installed on the heat pipe device and used for measuring the temperature in the heat pipe device;

[0022] A heat distribution device is connected to the heat pipe device and the temperature scanner respectively and used for distributing the heat according to the temperature in the heat pipe device. Through the heat pipe device, the waste heat generated by the powder tank and the stirring machine is efficiently recycled, the temperature scanner is used for real-time monitoring of the heat parameters, and the heat distribution device is used for intelligent allocation of the waste heat, which can significantly reduce the waste of heat energy in the production process, reduce the consumption of external energy, improve the powder drying efficiency, indirectly shorten the stirring period, and realize the dual optimization of energy saving and production efficiency.

[0023] In some embodiments, the stirring unit is further provided with a dust collector arranged above the stirring machine. The dust collector can effectively collect dust generated during stirring, significantly improve the working environment, and reduce air pollution.

[0024] In some embodiments, the output ports of the aggregate hopper, the powder tank, the admixture bin and the water tank are each provided with a weighing meter to output the required aggregate, powder, admixture and water for making concrete according to the concrete gradation. The weighing meter arranged at the output port of the silo can accurately control the amount of each type of raw material, ensuring the accuracy of the concrete gradation.

[0025] In some embodiments, the silo is provided with a sensor for detecting the remaining amount of raw materials.

[0026] In some embodiments, the inside bottom of the silo for storing powder is provided with a screw conveyor for contactless conveying of the powder. The contactless conveying avoids caking or segregation of the powder, ensures the flowability and accuracy of the powder ratio, and reduces dust pollution, especially suitable for closed conveying of materials such as cement that are prone to fly ash.

[0027] In some embodiments, the silo for storing aggregate is provided with a laser particle size analyzer. The laser particle size analyzer can monitor the change in aggregate particle size distribution in real time, dynamically adjust the gradation scheme in combination with the control unit, ensure the stability of the concrete performance, and solve the problem of hysteresis of traditional manual sampling inspection.

[0028] In some embodiments, the silo for storing admixture is provided with a stirrer for preventing sedimentation. The stirrer prevents the admixture from sedimentation and stratification, ensuring uniform distribution of the effective components of the chemical additive.

[0029] In some embodiments, the transportation unit includes a plurality of belt conveyors, wherein the end of the belt conveyor for transporting aggregate to the stirring unit is provided with an elevator.

[0030] Based on the above scheme, the intelligent environment-friendly concrete mixing system in the embodiment of the present application simultaneously recovers the waste residues generated by the mixer and the waste residues carried by the engineering vehicle, solves the problem of missing vehicle waste residue treatment in the traditional scheme, through the integrated recovery system, not only reduces the pollution of the construction site, but also realizes the resource utilization of the waste residues, and converts the waste residues into usable building materials. Through the waste heat recovery system, waste heat in the production process is collected, which is used for raw material preheating in winter or heating in the living area, improves the energy utilization efficiency, reduces the production energy consumption, realizes the recycling of energy. The control unit monitors the running state of each link in real time, automatically generates a carbon footprint report, provides data support for environmental management, can optimize the logistics path or equipment scheduling, reduces invalid energy consumption, realizes the win-win of economy and environmental protection. The system can optimize resource allocation, improve operation efficiency, and facilitate tracking of environmental performance. In summary, the intelligent environment-friendly concrete mixing system in the embodiment can not only improve the cleanliness of the production environment, but also create additional economic value through waste residue recycling and waste heat recovery, realize the dual goals of environmental protection and cost saving. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings described herein are used to provide further understanding of the present application, form a part of the present application, the schematic embodiments of the present application and the explanations thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0032] Figure 1 The process flow chart of the storage unit, the transportation unit and the mixing unit of the intelligent environment-friendly concrete mixing system in the embodiment of the present application;

[0033] Figure 2 The process flow chart of the waste heat recovery unit and the waste residue recovery unit of the intelligent environment-friendly concrete mixing system in the embodiment of the present application;

[0034] Figure 3 The process flow chart of the transportation unit of the intelligent environment-friendly concrete mixing system in the embodiment of the present application;

[0035] Figure 4 The flow chart of the concrete production method in the embodiment of the present application;

[0036] Figure 5 The optimal grading calculation method flow chart of the concrete production method in the embodiment of the present application.

[0037] In the drawings:

[0038] 1, storage unit; 2, mixing unit; 3, transportation unit; 4, waste heat recovery unit; 5, waste residue recovery unit;

[0039] 101, stone storage hopper; 102, sand storage hopper; 103, cement cylinder; 104, powder cylinder; 105, water pool; 106, additive cylinder; 107, weighing meter;

[0040] 201, mixer; 202, dust collector; 203, gathering hopper;

[0041] 301, belt conveyor; 302, aggregate temporary storage hopper; 303, elevator;

[0042] 401, heat pipe device; 402, temperature scanner; 403, heat distribution device;

[0043] 501, sandstone separator; 502, engineering vehicle; 503, wheel washing machine; 504, cyclone; 505, filter membrane; 506, brick making machine. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] The terms "system", "unit", "module" used in this paper are a method for distinguishing different components, elements, parts or assemblies at different levels, which can be replaced by other expressions that can achieve the same purpose.

[0048] AsFigures 1-3 As shown in an embodiment of the intelligent environment-friendly concrete mixing system, the intelligent environment-friendly concrete mixing system comprises a storage unit 1, a mixing unit 2, a transportation unit 3, a waste residue recycling unit 5, a waste heat recycling unit 4, and a control unit; wherein the storage unit 1 comprises a plurality of silos for storing aggregates, powders, additives, and water; the mixing unit 2 is connected with the storage unit 1 and comprises a mixer 201 for mixing concrete; the transportation unit 3 is used for transporting raw materials stored in the storage unit 1 to the mixing unit 2; the waste residue recycling unit 5 is used for recycling waste residues generated by the mixer 201 and waste residues adhered to the tires of the engineering vehicle 502, and pressing the waste residues into bricks; the waste heat recycling unit 4 is connected with the powder tank and the mixer 201 respectively, and is used for recycling waste heat generated by the powder tank and the mixer 201, and using the waste heat for preheating of concrete raw materials in winter or for heating of living areas or for power generation; the control unit is communicatively connected with the storage unit 1, the mixing unit 2, the transportation unit 3, the waste residue recycling unit 5, and the waste heat recycling unit 4; the control unit is used for controlling and monitoring the operation of each unit, and generating a carbon footprint report according to the consumption and output of each unit.

[0049] In the above exemplary embodiment, the intelligent environment-friendly concrete mixing system simultaneously recycles waste residues generated by the mixer 201 and waste residues carried by the tires of the engineering vehicle 502, solving the problem of missing vehicle waste residue treatment in the traditional scheme; through the integrated recycling system, not only the pollution of the construction site is reduced, but also the resource utilization of waste residues is realized, and the waste residues are converted into usable building materials. Through the waste heat recycling system, waste heat in the production process is collected, which is used for preheating of raw materials in winter or for heating of living areas, improving the energy utilization efficiency, reducing the production energy consumption, and realizing the cyclic utilization of energy. The control unit monitors the running state of each link in real time, automatically generates a carbon footprint report, provides data support for environmental protection management, can optimize the logistics path or equipment scheduling, reduces invalid energy consumption, realizes the win-win of economy and environmental protection. The system can optimize resource allocation, improve operation efficiency, and facilitate tracking of environmental performance. In summary, the intelligent environment-friendly concrete mixing system in the embodiment not only can improve the cleanliness of the production environment, but also can create additional economic value through waste residue recycling and waste heat recycling, realizing the dual goals of environmental protection and cost saving.

[0050] In some embodiments, as Figure 1As shown, the waste residue recycling unit 5 includes a sand and gravel separator 501, a wheel washing machine 503, a hydrocyclone 504, and a filter membrane 505. The sand and gravel separator 501 is used to clean and separate the waste residue generated by the mixer 201. The wheel washing machine 503 is used to clean the waste residue adhering to the tires of the engineering vehicle 502. The hydrocyclone 504 is connected to the wheel washing machine 503 and is used to separate the waste residue adhering to the tires of the engineering vehicle 502 after cleaning. The filter membrane 505 is connected to the sand and gravel separator 501 and the hydrocyclone 504 respectively and is used to filter the waste residue to obtain reusable brick-making raw materials. Through multi-stage treatment by sand and gravel separator 501, wheel washing machine 503, hydrocyclone 504 and filter membrane 505, sand, gravel, mud and other components in the waste residue are efficiently separated and purified, ensuring the purity and stability of the brick-making raw materials. Hydrocyclone 504 can recover fine particles from car wash wastewater, and filter membrane 505 further removes impurities, transforming the waste residue into cost-effective recycled building material raw materials, while reducing wastewater discharge and meeting environmental protection construction requirements.

[0051] In some embodiments, such as Figure 2 As shown, the waste recycling unit 5 also includes a brick-making machine 506, which uses the raw materials obtained after filtration by the filter membrane 505 to make bricks. It is understandable that in some construction sites where the construction requirements for roads are not high, roadbed bricks can be made from the recycled waste materials. The brick-making machine 506 directly uses the filtered waste materials to produce roadbed bricks, thus "recycling" the waste on-site. These bricks can be used for temporary roads or base courses with low strength requirements on construction sites, saving the cost of purchasing building materials and reducing carbon emissions and disposal costs from transporting waste, achieving closed-loop management of "zero waste" construction.

[0052] In some embodiments, such as Figure 2 As shown, the waste heat recovery unit 4 includes a heat pipe device 401, a temperature scanner 402, and a heat distribution device 403. The heat pipe device 401 is connected to both the powder tank and the mixer 201, and is used to transfer and store the waste heat from these components. The temperature scanner 402 is installed on the heat pipe device 401 and is used to measure the temperature within the heat pipe device 401. The heat distribution device 403 is connected to both the heat pipe device 401 and the temperature scanner 402, and is used to allocate the heat according to the temperature within the heat pipe device 401. By efficiently recovering the waste heat generated by the powder tank and the mixer 201 through the heat pipe device 401, combined with real-time monitoring of heat parameters by the temperature scanner 402, and intelligent allocation of waste heat by the heat distribution device 403, the waste heat can be significantly reduced during production, external energy consumption can be decreased, powder drying efficiency can be improved, and the mixing cycle can be indirectly shortened, achieving a dual optimization of energy saving and production efficiency.

[0053] In some embodiments, the mixer 201 is a dual-power mixer with both an electric motor and a hydraulic motor. It operates purely on electric power under light loads and uses a hybrid electric-hydraulic system under heavy loads to save energy. The surface of the twin-shaft blades is laser-coated with tungsten carbide to improve mixing efficiency and extend blade life. Furthermore, the mixer 201 is equipped with a rubber-spring composite vibration-damping base to reduce noise at the construction site.

[0054] In some embodiments, such as Figure 1 As shown, the mixing unit 2 is also equipped with a dust collector 202, which is located above the mixer 201. The dust collector 202 effectively collects dust generated during the mixing process, significantly improving the working environment, reducing air pollution, protecting worker health, and preventing raw material waste, thus meeting environmental protection production requirements.

[0055] In some embodiments, the mixer 201 is a dual-power mixer with both an electric motor and a hydraulic motor. It operates purely on electric power under light loads and uses a hybrid electric-hydraulic system under heavy loads to save energy. The surface of the twin-shaft blades is laser-coated with tungsten carbide to improve mixing efficiency and extend blade life. Furthermore, the mixer 201 is equipped with a rubber-spring composite vibration-damping base to reduce noise at the construction site.

[0056] In some embodiments, such as Figure 1 As shown, a hopper 203 is provided at the outlet of the mixer 201. The hopper 203 guides the concrete into the mixer truck tank, preventing spillage.

[0057] In some embodiments, such as Figure 1 As shown, the silos are modular steel structures, storing raw materials such as sand, stone, cement, and fly ash in separate compartments. The silo height is higher than the mixer 201, allowing materials to fall under their own weight onto the conveyor belt and be transported to the mixer 201, reducing the energy consumption of traditional loader handling. The modular steel structure silos store raw materials in separate compartments, and the height difference allows the materials to fall under their own weight onto the conveyor belt, reducing the need for loader handling, lowering energy consumption and noise, and improving conveying efficiency. The modular design also facilitates installation and expansion.

[0058] In some embodiments, such as Figure 1 As shown, each silo's outlet is equipped with a weighing meter 107 to output the aggregates, powders, admixtures, and water required for concrete production according to the concrete gradation. By installing weighing meters 107 at the silo outlets, the amount of various raw materials added can be precisely controlled, ensuring the accuracy of the concrete gradation, improving the stability of concrete quality, reducing human measurement errors, and increasing production efficiency.

[0059] In some embodiments, such as Figure 1As shown, the aggregate silo selects a hopper-shaped bin, and the weighing meter 107 below the aggregate silo selects a hopper-shaped scale. As an illustrative embodiment, the silo includes a stone storage hopper 101, a sand storage hopper 102, a cement cylinder 103, a powder cylinder 104, a water pool 105, and an additive cylinder 106.

[0060] In some embodiments, sensors for monitoring the remaining amount of raw materials are provided in the silos. Specifically, a level meter or a liquid level sensor can be selected according to actual needs. As an illustrative embodiment, a radar level meter is selected for the aggregate silo and the powder cylinder 104, and a liquid level sensor is used in the water pool 105.

[0061] In some embodiments, a screw conveyor is provided at the inner bottom of the powder cylinder 104, which is used for contactless conveying of the powder. The screw conveyor is configured at the bottom of the powder cylinder 104 to avoid caking or segregation of the powder through contactless conveying, ensuring the flowability and proportioning accuracy of the powder, while reducing dust pollution, especially suitable for closed conveying of materials such as cement that are prone to flying.

[0062] In some embodiments, a laser particle size analyzer is provided in the aggregate silo for monitoring the particle size distribution of the aggregate. The laser particle size analyzer is integrated in the aggregate silo to monitor the changes in the particle size distribution of the aggregate in real time, and dynamically adjust the grading scheme in combination with the control unit to ensure the stability of the performance of the concrete and solve the lagging problem of traditional manual sampling.

[0063] It should be noted that a microwave moisture meter, a temperature and humidity sensor, and an air conditioning system are also provided in the aggregate silo to maintain the stability of the water content of the aggregate and reduce the water consumption for mixing. Through the synergistic effect of the microwave moisture meter, the temperature and humidity sensor, and the air conditioning system, the water content of the aggregate is accurately controlled, the error in the amount of water for mixing caused by fluctuations in the water content is reduced, the consistency of the strength of the concrete is improved, and the burden of wastewater treatment is reduced.

[0064] In some embodiments, a stirrer is provided in the additive cylinder 106 to prevent sedimentation. Through the provision of the stirrer, the additive is prevented from sedimentation and stratification, ensuring the uniform distribution of the effective components of the chemical additive and guaranteeing the functional stability of the concrete additive (such as water reduction rate) and avoiding performance deviation caused by sedimentation.

[0065] In some embodiments, the transportation unit 3 includes a plurality of belt machines 301, wherein the end of the belt machine 301 for transporting the aggregate to the mixing unit 2 is provided with an elevator 303. As an illustrative embodiment, as shown in Figure 3 The sand and stone are transported by the engineering vehicle 502 to the sand discharge hopper and the stone discharge hopper, respectively, and then pass through the inclined belt, the transition inclined belt, and the positive and negative rotation belt in sequence to enter the distribution belt at both ends, which drives the sand and stone to enter the sand storage hopper 102 and the stone storage hopper 101, respectively. Figure 1As shown, the sand in the sand storage hopper 102 and the sand in the stone storage hopper 101 are weighed and then enter the aggregate temporary storage hopper 302 through the belt conveyor 301, and the sand and stone in the aggregate temporary storage hopper 302 are transported to the conveying belt leading to the mixer 201 by means of the elevator 303. By adopting the combined design of the belt conveyor 301 and the elevator 303, and through the linkage of the sand and stone discharge hopper, the forward and reverse belt, and the distribution belt, the aggregate classification and conveying and precise feeding are realized, the manual carrying strength is greatly reduced, and the energy consumption problem of high-fall conveying is solved by the design of the elevator 303.

[0066] It should be noted that the belt conveyor 301 adopts a closed air cushion belt to reduce friction resistance and reduce belt wear.

[0067] In some embodiments, the control unit sets up a digital twin platform of the concrete mixing system, the digital twin platform collects device states and environmental parameters through the Internet of Things, constructs a 3D visualization model, and performs real-time early warning when a device fails. The digital twin platform based on the Internet of Things constructs a 3D visualization model, real-time maps device states and environmental parameters, avoids production risks in advance, reduces downtime losses, and provides a data basis for remote operation and process improvement through fault early warning and simulation optimization.

[0068] Based on the above-mentioned concrete mixing system, the utility model also provides a concrete production method, which is applied to the concrete mixing system, the concrete mixing system includes the above-mentioned intelligent environmental protection concrete mixing system, further includes an aggregate screening unit, the aggregate screening unit is equipped with multiple levels of screen holes, is used for screening aggregate and obtains aggregate data and screening data; the aggregate screening unit is further equipped with a laser particle size instrument, and the laser particle size instrument is used to assist in obtaining the aggregate data and the screening data. As Figure 4 As shown, the concrete production method includes the following steps:

[0069] Aggregate screening: the aggregate screening unit is used to screen aggregate, obtain aggregate data and screening data, the aggregate data includes aggregate types and particle size distribution data of different aggregates, and the screening data includes the types, particle sizes and qualities of aggregates screened by each level of screen hole;

[0070] Optimal proportioning calculation: the control unit calculates the optimal proportioning of the required concrete according to the aggregate data and the screening data, in combination with the performance requirements of the concrete, and applies the Fuller curve;

[0071] Raw material storage: the aggregate of the required particle size, the powder, the additive and the water required by the optimal proportioning are transported to the storage unit 1 for storage;

[0072] Concrete mixing: the transportation unit 3 transports the aggregate, the powder, the additive and the water stored in the storage unit 1 to the mixing unit 2, and the mixing unit 2 mixes and produces concrete according to the optimal proportioning.

[0073] In the above exemplary embodiment, accurate data such as aggregate type and particle size distribution are obtained in real time by the aggregate screening unit, and the optimal grading is calculated in combination with the Fuller curve theory to ensure that the concrete achieves the best density and mechanical properties; the system can dynamically adjust the grading scheme according to the aggregate particle size distribution obtained by actual screening, perfectly solving the problem of incomplete aggregate specifications on the construction site; even if a certain aggregate is temporarily in short supply, the algorithm can quickly re-optimize the proportioning to ensure uninterrupted production. The present embodiment realizes automatic closed-loop control throughout the process from aggregate screening and data acquisition to grading calculation, raw material conveying and mixing production, not only avoiding manual operation errors, but also improving production efficiency, and is particularly suitable for large-scale continuous operation. In summary, the concrete production method in the present embodiment upgrades the traditional "experience-driven" to "data-driven" for concrete production, and realizes multi-dimensional optimization of material cost, production efficiency, resource utilization and environmental performance on the premise of ensuring engineering quality, providing reliable technical support for modern intelligent construction.

[0074] In some embodiments, in the aggregate screening step, the aggregate is scanned by a laser particle size analyzer to obtain aggregate data and screening data.

[0075] In some embodiments, as shown in Figure 5 The optimal grading calculation method includes the following steps:

[0076] Establishing an aggregate database: according to the aggregate type, the particle size distribution of different aggregates, and the maximum aggregate particle size;

[0077] Calculating the actual screening residue percentage: according to the screening data and the mass before aggregate screening, the actual screening residue percentage of each screen hole is calculated;

[0078] Calculating the ideal screening residue percentage: according to the Fuller curve, the ideal screening residue percentage of each screen hole is calculated;

[0079] Determining the optimal grading: according to the performance requirements of the concrete, the error between the actual screening residue percentage and the ideal screening residue percentage of each screen hole is calculated, and the actual screening residue percentage and the corresponding screen hole size at the minimum error are obtained. The screen hole size is used as the optimal grading required particle size, and the optimal grading is obtained.

[0080] The optimal grading calculation method in the above embodiment dynamically combines the Fuller curve theory with the actual aggregate characteristics, so that the calculation result not only meets the theoretical optimum but also adapts to the site material conditions.

[0081] In some embodiments, in the step of determining the optimal grading, the formula for calculating the error between the actual screening residue percentage and the ideal screening residue percentage is:

[0082]

[0083] In equation (1), e is the error between the actual sieve residue percentage and the ideal sieve residue percentage, n is the total number of sieve apertures in the aggregate screening unit, and ω i P is the weighting coefficient for the i-th sieve aperture, set according to the performance requirements of concrete. 实际(di) P represents the actual residue percentage of the i-th sieve aperture. Fuller(di) denoted as the ideal sieve residue percentage for the i-th sieve aperture.

[0084] In some embodiments, the ideal sieve residue percentage is calculated using equation (2), which is expressed as follows:

[0085]

[0086] In formula (2), d is the sieve aperture size, D is the maximum aggregate particle size, and a is the Fuller index, which is usually taken as 0.45-0.5.

[0087] In some embodiments, such as Figure 5 As shown, the optimal gradation calculation method includes a step of generating a batching sheet after determining the optimal gradation. After determining the optimal gradation, a digital batching sheet is automatically generated, directly connecting to the mixing system to execute production, achieving seamless integration of "calculation-proportioning-production," avoiding errors from manual transcription, and supporting quality traceability and process optimization.

[0088] Through the description of several embodiments of the intelligent and environmentally friendly concrete mixing system of this utility model, it can be seen that the embodiments of the intelligent and environmentally friendly concrete mixing system of this utility model have at least one or more of the following advantages:

[0089] 1. The intelligent and environmentally friendly concrete mixing system provided by this utility model can simultaneously recover the waste residue generated by the mixer 201 and the waste residue carried by the tires of the engineering vehicle 502, thus solving the problem of the lack of vehicle waste residue treatment in the traditional solution.

[0090] 2. The intelligent and environmentally friendly concrete mixing system provided by this utility model collects waste heat during the production process through a waste heat recovery system, which is used for preheating raw materials in winter or heating living areas, thereby improving energy utilization efficiency, reducing production energy consumption, and realizing the recycling of energy.

[0091] 3. The intelligent and environmentally friendly concrete mixing system provided by this utility model has a control unit that monitors the operating status of each link in real time, automatically generates a carbon footprint report, provides data support for environmental management, and can optimize logistics routes or equipment scheduling in a targeted manner, reduce ineffective energy consumption, and achieve a win-win situation for both economy and environmental protection.

[0092] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0093] The above examples are only used to illustrate the technical solutions of the present application but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, all of them should be covered in the technical solution range of the present application claimed for protection.

Claims

1. An intelligent and environmentally friendly concrete mixing system, characterized in that, include: Storage unit, comprising several silos for storing aggregates, powders, additives and water; A mixing unit connected to a storage unit, including a mixer for mixing concrete for production; A transport unit is used to transport raw materials stored in the storage unit to the mixing unit; The waste residue recycling unit is used to recycle waste residue generated by the mixer and waste residue stuck to the tires of engineering vehicles, and to press the waste residue into bricks. The waste heat recovery unit is connected to the powder tank and the mixer respectively, and is used to recover the waste heat generated by the powder tank and the mixer, and use the waste heat for preheating concrete raw materials, heating of living areas or power generation in winter. The control unit is communicatively connected to the storage unit, stirring unit, transportation unit, waste residue recovery unit, and waste heat recovery unit. The control unit is used to control and monitor the operation of each unit and generate a carbon footprint report based on the consumption and output of each unit.

2. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The waste recycling unit includes: Sand and gravel separators are used to clean and separate waste residue produced by mixing machines. Wheel washing machines are used to clean the waste residue stuck to the tires of engineering vehicles; A hydrocyclone, connected to a wheel washing machine, is used to separate the waste residue adhering to the tires of engineering vehicles after cleaning. The filter membrane, which is connected to the sand and gravel separator and the hydrocyclone respectively, is used to filter waste residue to obtain reusable brick-making raw materials.

3. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The waste heat recovery unit includes: Heat pipe devices, which are connected to the powder tank and the mixer respectively, are used to transfer and store the waste heat of the powder tank and the mixer; A temperature scanner, which is installed on the heat pipe device, is used to measure the temperature inside the heat pipe device; A heat distribution device, which is connected to a heat pipe assembly and a temperature scanner, is used to distribute heat according to the temperature inside the heat pipe assembly.

4. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The mixing unit is also equipped with a dust collector, which is located above the mixer.

5. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, Each silo outlet is equipped with a weighing meter to output the aggregates, powders, admixtures, and water required for making concrete according to the concrete gradation.

6. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The silo is equipped with sensors to monitor the remaining amount of raw materials.

7. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, A screw conveyor is installed at the bottom inside the powder silo. The screw conveyor is used for non-contact conveying of powder.

8. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The aggregate silo is equipped with a laser particle size analyzer for monitoring the aggregate particle size distribution.

9. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The admixture silo is equipped with a stirrer to prevent sedimentation.

10. The intelligent and environmentally friendly concrete mixing system according to claim 1, characterized in that, The belt conveyor used to transport aggregates to the mixing unit is equipped with an elevator at the end.

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