... machine are driven separately by three motors ,and the feeder adopts speed-adjusting motor , SZLH250 pellet machine can be adjusted wilfully ... 2,it consists of screw shaft .SS shell,reducer and speed-adjusting motor.The screw serves the funcyion of conveying ,its rotational ... Figure 3,it consists of mixer shaft ,picks,shell,reducer and motor .The angle of picks is adjustable ,it serves the functions ...