The invention provides an automatic
powder selecting control method,
system and device for a vertical mill classifier. The automatic
powder selecting control method for the vertical mill classifier comprises the following steps that a set target wind pressure value and a set
powder fineness target value are input, outlet wind pressure and inlet wind pressure of the vertical mill classifier are collected, a wind
pressure difference value between the outlet wind pressure and the inlet wind pressure is calculated, and a running state of a fan is adjusted according to the wind pressure differencevalue and the target wind pressure value; and a powder
granularity value is collected, and a state of a frequency converter of the vertical mill classifier is adjusted according to the powder
granularity value and the powder
fineness target value. The required powder
granularity can be automatically obtained according to the set values, steps of manual sampling and adjustment are reduced, in a screening process, the wind
pressure difference value is continuously adjusted, the state of the fan is adjusted according to the wind
pressure difference value and the target wind pressure value, the defect that the accuracy of powder screening and
grinding of the vertical mill classifier is affected due to deviation of wind pressure is overcome, the problem of unbalance in powder discharging and feeding is solved, and the problems of non-uniform powder
fineness screening and huge waste caused when products with specific indexes are adjusted are solved.