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  • Concrete mixing plant

    Concrete mixing plant is a combined device for centralized mixing of concrete. It is characterized by high efficiency, precision and high degree of automation. It is widely used in engineering construction fields such as buildings, roads, bridges, etc. The following is a comprehensive introduction from multiple dimensions:
    1. Composition and structure of concrete mixing station
    1. Mixing system
    Core components: It consists of a mixing host (such as a forced mixer, a self-falling mixer), a mixing shaft, a mixing blade, etc.
    Function: Through mechanical mixing, raw materials such as cement, sand, gravel, water and admixtures are evenly mixed to form concrete that meets the requirements.
    Type difference: Forced mixers are suitable for mixing dry hard, semi-dry hard and lightweight concrete; self-falling mixers are mostly used for mixing plastic concrete.
    2. Material supply system
    Aggregate supply: including aggregate silos (storing sand and gravel, etc.), belt conveyors (or bucket elevators), and weighing devices, which can accurately control the amount of aggregate.
    Powder supply: Powders such as cement and fly ash are stored in silos and transported to the weighing bucket by screw conveyors to achieve quantitative supply.
    Liquid supply: Water and admixtures are stored in water tanks and admixture tanks respectively, and are injected into the mixer by water pumps or metering pumps according to the proportion.
    3. Control system
    Automation control: PLC (programmable logic controller) or computer control system is used to realize the automation of the whole process of batching, mixing and unloading.
    Function: Set the mix ratio, monitor production data in real time, record material usage, generate production reports, and ensure that the production process is accurate and controllable.
    4. Auxiliary system
    Dust removal system: Through equipment such as bag dust collectors, dust emissions during powder transportation are reduced to meet environmental protection requirements.
    Cleaning system: Automatically clean the mixer and conveying pipeline to prevent concrete residue from solidifying and extend the life of the equipment.
    Air system: Provide power for various pneumatic components (such as cylinders and solenoid valves) to ensure the reliability of equipment operation.
    2. Classification and characteristics
    1. Classification by movement mode
    Type Characteristics Applicable scenarios
    Fixed Installed in a fixed site, with large production capacity (usually 50-200m³/h or more), high degree of automation Large construction projects, commercial concrete stations
    Mobile Can be disassembled and transported, compact structure, quick installation and commissioning (such as trailer type, container type) Temporary projects, field construction
    Car-mounted Integrated on the truck chassis, strong mobility, suitable for short-distance transfer operations Rural housing, small projects
    2. Classification by production scale
    Small station: productivity ≤50m³/h, small footprint, low investment cost, suitable for small projects.
    Medium-sized station: productivity 50-120m³/h, used in general industry and civil buildings.
    Large station: productivity ≥120m³/h, often used in large infrastructure construction such as high-speed railways and bridges.
    3. Classification by the number of mixing hosts
    Single host station: simple structure, low investment, suitable for small and medium-sized production.
    Dual host station: two hosts work in parallel, doubling production efficiency, suitable for high-volume demand scenarios.
    3. Workflow
    Material preparation: store sand, cement, fly ash and other raw materials in corresponding tanks according to specifications, and check the reserve of admixtures and water.
    Batching metering: the control system accurately measures aggregates, powders, water and admixtures according to the set mix ratio through weighing devices.
    Mixing and mixing: the measured materials are sent to the mixer, and the mixing time is determined according to the type of concrete (usually 60-120 seconds) to form a uniform mixture.
    Unloading and transportation: the mixed concrete is unloaded into the concrete mixer through the unloading hopper, or directly transported to the pouring site.
    Circular production: clean the equipment and enter the next round of batching and mixing, and the system records production data at the same time.
    4. Key technical parameters
    Productivity: concrete output per unit time (such as HZS120 station means 120m³ concrete is produced per hour).
    Mixing host capacity: determines the single mixing volume, such as a 2m³ mixer corresponds to about 2m³ concrete per batch.
    Batching accuracy: aggregate error ≤±2%, powder, water, admixture error ≤±1%, to ensure that the concrete strength meets the standard.
    Installed power: depending on the scale of the equipment, the power ranges from tens of kilowatts to hundreds of kilowatts, affecting the energy consumption cost.
    V. Application scenarios
    Commercial concrete production: large fixed mixing stations supply commercial concrete to construction sites to ensure uniform quality.
    Infrastructure construction: high-speed railways, bridges, tunnels and other projects use special mixing stations to meet the needs of high-strength concrete.
    Water conservancy projects: in the construction of dams and reservoirs, mixing stations can produce concrete with special properties such as impermeability and frost resistance.
    Rural and civil buildings: mobile or small mixing stations are suitable for decentralized projects such as self-built houses in rural areas and township roads.
    VI. Advantages and challenges
    Advantages:
    High efficiency: automated production reduces manual intervention, and batch output meets the needs of project progress.
    Stable quality: Accurate measurement and standardized mixing ensure consistent concrete performance and reduce construction risks.
    Environmental protection and controllable: Closed storage, dust removal and noise reduction design meet modern environmental protection requirements and reduce environmental pollution.
    Challenges:
    High investment cost: The cost of purchasing equipment and site construction for large stations can reach millions of yuan, and small and medium-sized enterprises are under great investment pressure.
    High technical requirements: Professional personnel are required for operation and maintenance, otherwise, problems such as batching errors and equipment failures are prone to occur.
    Environmental protection upgrade pressure: Some old mixing stations need to transform dust removal and wastewater treatment systems to meet the latest environmental protection standards.
    VII. Development trend
    Intelligence: Introduce the Internet of Things and big data technology to achieve remote monitoring, fault warning and production optimization.
    Green: Promote new energy mixer trucks, solar power supply, and adopt wastewater and waste residue recycling technology.
    Modular design: Standardized equipment components are easy to disassemble and transfer quickly to meet different engineering needs.
    High-performance concrete production: Optimize the mixing process for new materials such as high-strength, self-compacting, and 3D printed concrete.
    8. Selection and configuration suggestions
    Based on the scale of the project: choose a fixed large station for long-term large projects, and a mobile or vehicle-mounted station for short-term small projects.
    Focus on capacity matching: choose a productivity of 1.2-1.5 times the average daily concrete demand to avoid equipment overload or idleness.

    Environmental compliance: confirm whether the equipment meets local dust and noise emission standards when purchasing to avoid later rectification costs.
    As a key equipment for modern building industrialization, the technological progress of concrete mixing stations directly affects the quality and efficiency of projects. With the transformation of the construction industry towards greening and intelligence, the functions of mixing stations are also constantly expanding, becoming an important support for promoting the upgrading of the infrastructure industry.
    Concrete mixing plant Concrete mixing plant is a combined device for centralized mixing of concrete. It is characterized by high efficiency, precision and high degree of automation. It is widely used in engineering construction fields such as buildings, roads, bridges, etc. The following is a comprehensive introduction from multiple dimensions: 1. Composition and structure of concrete mixing station 1. Mixing system Core components: It consists of a mixing host (such as a forced mixer, a self-falling mixer), a mixing shaft, a mixing blade, etc. Function: Through mechanical mixing, raw materials such as cement, sand, gravel, water and admixtures are evenly mixed to form concrete that meets the requirements. Type difference: Forced mixers are suitable for mixing dry hard, semi-dry hard and lightweight concrete; self-falling mixers are mostly used for mixing plastic concrete. 2. Material supply system Aggregate supply: including aggregate silos (storing sand and gravel, etc.), belt conveyors (or bucket elevators), and weighing devices, which can accurately control the amount of aggregate. Powder supply: Powders such as cement and fly ash are stored in silos and transported to the weighing bucket by screw conveyors to achieve quantitative supply. Liquid supply: Water and admixtures are stored in water tanks and admixture tanks respectively, and are injected into the mixer by water pumps or metering pumps according to the proportion. 3. Control system Automation control: PLC (programmable logic controller) or computer control system is used to realize the automation of the whole process of batching, mixing and unloading. Function: Set the mix ratio, monitor production data in real time, record material usage, generate production reports, and ensure that the production process is accurate and controllable. 4. Auxiliary system Dust removal system: Through equipment such as bag dust collectors, dust emissions during powder transportation are reduced to meet environmental protection requirements. Cleaning system: Automatically clean the mixer and conveying pipeline to prevent concrete residue from solidifying and extend the life of the equipment. Air system: Provide power for various pneumatic components (such as cylinders and solenoid valves) to ensure the reliability of equipment operation. 2. Classification and characteristics 1. Classification by movement mode Type Characteristics Applicable scenarios Fixed Installed in a fixed site, with large production capacity (usually 50-200m³/h or more), high degree of automation Large construction projects, commercial concrete stations Mobile Can be disassembled and transported, compact structure, quick installation and commissioning (such as trailer type, container type) Temporary projects, field construction Car-mounted Integrated on the truck chassis, strong mobility, suitable for short-distance transfer operations Rural housing, small projects 2. Classification by production scale Small station: productivity ≤50m³/h, small footprint, low investment cost, suitable for small projects. Medium-sized station: productivity 50-120m³/h, used in general industry and civil buildings. Large station: productivity ≥120m³/h, often used in large infrastructure construction such as high-speed railways and bridges. 3. Classification by the number of mixing hosts Single host station: simple structure, low investment, suitable for small and medium-sized production. Dual host station: two hosts work in parallel, doubling production efficiency, suitable for high-volume demand scenarios. 3. Workflow Material preparation: store sand, cement, fly ash and other raw materials in corresponding tanks according to specifications, and check the reserve of admixtures and water. Batching metering: the control system accurately measures aggregates, powders, water and admixtures according to the set mix ratio through weighing devices. Mixing and mixing: the measured materials are sent to the mixer, and the mixing time is determined according to the type of concrete (usually 60-120 seconds) to form a uniform mixture. Unloading and transportation: the mixed concrete is unloaded into the concrete mixer through the unloading hopper, or directly transported to the pouring site. Circular production: clean the equipment and enter the next round of batching and mixing, and the system records production data at the same time. 4. Key technical parameters Productivity: concrete output per unit time (such as HZS120 station means 120m³ concrete is produced per hour). Mixing host capacity: determines the single mixing volume, such as a 2m³ mixer corresponds to about 2m³ concrete per batch. Batching accuracy: aggregate error ≤±2%, powder, water, admixture error ≤±1%, to ensure that the concrete strength meets the standard. Installed power: depending on the scale of the equipment, the power ranges from tens of kilowatts to hundreds of kilowatts, affecting the energy consumption cost. V. Application scenarios Commercial concrete production: large fixed mixing stations supply commercial concrete to construction sites to ensure uniform quality. Infrastructure construction: high-speed railways, bridges, tunnels and other projects use special mixing stations to meet the needs of high-strength concrete. Water conservancy projects: in the construction of dams and reservoirs, mixing stations can produce concrete with special properties such as impermeability and frost resistance. Rural and civil buildings: mobile or small mixing stations are suitable for decentralized projects such as self-built houses in rural areas and township roads. VI. Advantages and challenges Advantages: High efficiency: automated production reduces manual intervention, and batch output meets the needs of project progress. Stable quality: Accurate measurement and standardized mixing ensure consistent concrete performance and reduce construction risks. Environmental protection and controllable: Closed storage, dust removal and noise reduction design meet modern environmental protection requirements and reduce environmental pollution. Challenges: High investment cost: The cost of purchasing equipment and site construction for large stations can reach millions of yuan, and small and medium-sized enterprises are under great investment pressure. High technical requirements: Professional personnel are required for operation and maintenance, otherwise, problems such as batching errors and equipment failures are prone to occur. Environmental protection upgrade pressure: Some old mixing stations need to transform dust removal and wastewater treatment systems to meet the latest environmental protection standards. VII. Development trend Intelligence: Introduce the Internet of Things and big data technology to achieve remote monitoring, fault warning and production optimization. Green: Promote new energy mixer trucks, solar power supply, and adopt wastewater and waste residue recycling technology. Modular design: Standardized equipment components are easy to disassemble and transfer quickly to meet different engineering needs. High-performance concrete production: Optimize the mixing process for new materials such as high-strength, self-compacting, and 3D printed concrete. 8. Selection and configuration suggestions Based on the scale of the project: choose a fixed large station for long-term large projects, and a mobile or vehicle-mounted station for short-term small projects. Focus on capacity matching: choose a productivity of 1.2-1.5 times the average daily concrete demand to avoid equipment overload or idleness. Environmental compliance: confirm whether the equipment meets local dust and noise emission standards when purchasing to avoid later rectification costs. As a key equipment for modern building industrialization, the technological progress of concrete mixing stations directly affects the quality and efficiency of projects. With the transformation of the construction industry towards greening and intelligence, the functions of mixing stations are also constantly expanding, becoming an important support for promoting the upgrading of the infrastructure industry.
    Zhengzhou Xinyu Machine Manufacture Co., Ltd.
    Xinyu machine focuses on the R&D and production of construction machinery such as asphalt mixing plants, concrete pumps, and is committed to providing efficient, intelligent and eco-friendly construction machinery solutions to global customers.
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