抛掷指数就是最大振动加速度的垂直分量同重力加速度g的比值,它决定着靠接触的瞬间才能施力的脉动力源(筛面),同恒定的重力场共同作用下的被筛物料的起跳和着筛点的相位。而被筛物的周期跳动同筛面的振动基本上是重叠在一个空间进行,因而二者之间的相位关系就决定了透筛率。故抛掷指数是筛分机 The throwing index is the ratio of the vertical component of the maximum vibration acceleration to the gravitational acceleration g, which determines the pulsating force source (sieve surface) that can be applied at the moment of contact. With the constant gravity field, The screen of the phase. However, the periodic jitter of the sieve and the vibration of the sieve basically overlap in a space, so the phase relationship between the two determines the sieving rate. So throwing index is a screening machine