... &high productivity; 2.Low loss and small broken rate; 3.Simple structure. Composed by : pole lines, concave plate trash rack, ... such as secondary air to send a few parts, simple structure, easy operation, stable performance, safe and reliable. How it works: artificial ... , with the air flower to feed and the ration seperating screen to separate and remove the dust , very clean . Type6DY-906DY-656DY ...