PL series batcher includes bins, accumulative scale and belt conveyor, the mineral aggregates will be automatically carried on weighting according to given data of the user after the mixing plant being started. This kind of machine has following characteristics: 1, Simple structure, mobility available, easy for transport and maintenance. 2, Accumulative weighing, accurate, fall compesation function available. 3, Belt-cleaning device ensure belt's clean, and prevent material injury belt. 4, Flexible and compatible with various concrete plant.