Automatic powder selecting control method, system and device for vertical mill classifier

Abstract

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.

Description

technical field [0001] The invention mainly relates to the technical field of powder screening, in particular to a control method, system and device for automatic powder selection of a vertical mill classifier. Background technique [0002] At present, the quality (fineness) of the selected products of the vertical mill is mainly realized by manually adjusting the frequency converter frequency of the classifier, the frequency converter frequency of the fan, and the opening of the damper. For a product of a specification, it needs to go through: 1. Manually adjust parameters; 2. Manually collect samples for inspection; 3. Repeat the above steps if unqualified. The disadvantage of such operations and steps is that each judgment is time-delayed, the system cannot obtain the change node of the adjusted parameters in the first time, and manual operations are somewhat different, and personnel with different operating experience have different effects when adjusting parameters , c...

AI Technical Summary

Problems solved by technology

The disadvantage of such operations and steps is that each judgment is time-delayed, the system cannot obtain the change node of the adjusted parameters in the first time, and manual operations have certain differences, and personnel with different operating experience have different effects when adjusting parameters , causing equipment to cause a lot of waste when debugging products with specific indicators

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