In the process of concrete production, in order to accurately control the amount of raw materials added, the mixing station is required to accurately batch the raw materials. The wet mixing plant performs accurate proportioning of concrete raw materials through the batching system. The following is the batching process of the concrete mixing plant:
Aggregate ingredients: Aggregate includes coarse aggregate and fine aggregate. The aggregate batching device is composed of bucket body, sensor, belt conveyor and so on. First, coarse aggregates (such as gravel, pebbles, etc.) and fine aggregates (such as sand) are stored in separate warehouses. When batching is required, use a batching machine (such as a weight meter, volume meter) to weigh the aggregate in a certain proportion according to the engineering requirements.
Cement batching: According to the design mix ratio, the cement is stored in the cement silo. Use the batching machine to accurately weigh the cement according to the proportion. Because cement and admixtures have a lot of dust, serious pollution, and easy water absorption, it is generally required that the batching of cement and admixtures be carried out in a closed container. When the batching starts, the screw conveyor gets a signal, starts to start, and conveys the powder to the metering hopper, and a part of the air and dust in the metering hopper reaches the dust collector through the exhaust pipe. When the weight of the powder reaches the preset weight value, the screw conveyor stops conveying the powder to complete the batching.
Concrete admixture batching: Concrete admixtures (such as thickeners, retarders, wetting agents, etc.) that may be added according to needs, are stored in weighing tanks, and added to the concrete mixing station according to the proportion. When the preparation of the admixture starts, the admixture pump gets a signal and starts to pump the admixture in the admixture box to the metering hopper. When the weight of the water reaches the preset weight value, the admixture pump stops working and the batching is completed.
Water batching: use the water batching system to accurately weigh the water according to the design mix ratio. When the water distribution starts, the water pump gets a signal, and the water pump starts to pump the water in the pool to the metering bucket. When the weight of the water reaches the preset weight value, the water pump stops working and the metering is completed. When the pneumatic unloading butterfly valve receives the instruction of unloading, the pneumatic unloading butterfly valve moves to open the door to unload water.
Batch mixing: Send the accurately weighed aggregate, cement, concrete admixture and water into the concrete mixer. The mixing blades in the mixer mix the raw materials to form concrete.
Through the batching system, the concrete batching plant can ensure that the quality and performance of the concrete meet the design requirements while strictly controlling the proportion. Accuracy and stability during the batching process are critical to producing high-quality concrete.