Cement is a crucial component in concrete, and efficiently transporting cement from storage silos to tank trucks is essential. Screw conveyors play a pivotal role in this process, pumping cement into tank trucks quickly and accurately. This article will delve into the operational process of a concrete batching plant, the role of screw conveyors in cement pumping, and the classification of common concrete batching plant types.
Concrete Batching Plant Operation Process
An efficient concrete batching plant requires synchronized coordination between components and is controlled through specialized software. Below is the basic operating process:
- System-wide Check: Before operation, thoroughly inspect the entire batching plant, including the inside of the mixer, material loading positions (conveyor belt or skip hoist), hoppers, and ensure no foreign objects are present.
- Startup and Mix Design Input: After inspection, start the machine and input the pre-saved concrete mix design into the control system.
- Tank Truck Positioning: Ensure the tank truck is correctly positioned under the concrete discharge outlet.
- Component Weighing: Weigh sand, aggregate, cement, water, and additives according to the programmed proportions. Screw conveyors will pump cement from the silo into the cement weighing hopper. Water pump and cement feeding motors will automatically stop when the target weight is reached.
- Concrete Mixing: All materials are fed into the mixer and mixed thoroughly for a specific duration.
- Concrete Discharge: The mixed concrete is discharged into the tank truck.
- Cleaning: After each batch, clean the batching plant thoroughly, especially inside the mixer.
- Maintenance: Regularly inspect and maintain critical components such as motors, gearboxes, and mixer shaft bearings.
Classification of Concrete Batching Plants
Concrete batching plants are classified based on their capacity. Here are some common types of batching plants:
30m3/h – 75m3/h Concrete Batching Plants
Batching plants with capacities ranging from 30m3/h to 75m3/h are typically used in small to medium-sized construction projects or precast concrete production units. They often use skip hoists or inclined belt conveyors for material transport. Screw conveyors are used to transport cement from the silo to the weighing hopper.
Image: Small capacity concrete batching plant.
90m3/h – 150m3/h Concrete Batching Plants
Larger capacity batching plants, ranging from 90m3/h to 150m3/h, meet the high concrete demands of large-scale projects and commercial concrete suppliers. Belt conveyor and screw conveyor systems are designed to be more robust and efficient to handle large volumes of materials.
Image: Large capacity concrete batching plant.
Conclusion
Screw conveyors are an indispensable component in concrete batching plant systems, ensuring smooth and accurate cement pumping into tank trucks. Choosing the right type of batching plant to suit project needs will optimize concrete production efficiency. For detailed consultation on batching plant types and screw conveyors, please contact Xe Tải Mỹ Đình for support.
