... dust removal system. 2. reduce dust paticles flying Direct discharging vibrating screening machine:Equipment with the strict sealing and dust removal system ... the working environment and transfer materials to the vibratory screening machine for screening or impurity removal effetively. Thus, the ... , 1000, 1200, 1500AYD-400, 600, 800, 1000, 1200, 1500 direct discharging sifting machine for bread flour