Stone particle size screening device and technological process

The invention discloses a stone particle size screening device and a technological process. The stone particle size screening device comprises a feeder, a vibrating screen I, a vibrating screen II, conveying belts and a stock bin; the vibrating screen II is installed at the position 5-7 m away from the ground, the vibrating screen I is installed above the vibrating screen II, and the feeder is installed above the vibrating screen I; and the conveying belts are correspondingly arranged between the feeder and the vibrating screen I, between the vibrating screen I and the vibrating screen II, between the vibrating screen I and the stock bin and between the vibrating screen II and the stock bin. The technological process comprises the steps that a large number of stones are obtained and stacked at the flat position close to the feeder; the stones are continuously fed into the feeder; and the stone blocks are sequentially screened by the vibrating screen I and the vibrating screen II in a graded mode and conveyed