Quality control method and system based on airflow type cut stem drying

Abstract

The invention provides a quality control method and system based on airflow type cut stem drying. The method comprises the steps: acquiring a hot air temperature target value and an outlet moisture content target value in a cut stem drying procedure; establishing a temperature feedback control model of a hot air temperature and a steam valve opening degree, and controlling the steam valve openingdegree according to the temperature feedback control model and the hot air temperature target value so as to control the hot air temperature in a drying machine; acquiring an actual measurement valueof the outlet moisture content of the cut stem drying process, and obtaining a target deviation value of the outlet moisture content according to the target value and the actual measurement value; andestablishing a moisture content PID feedback control model for adjusting the air speed of the hot air according to the target deviation value so as to perform feedback control on the outlet moisturecontent so as to control the outlet moisture content of the outlet material in the cut stem drying process in the batch according to the target value. The batch consistency of the cut stem drying outlet moisture content can be improved, and the quality control capacity in the production process is improved.

Description

technical field [0001] The invention relates to the technical field of tobacco processing, in particular to a method and system for quality control of leaves based on air-flow drying cut stems. Background technique [0002] At present, during the shred production process of cigarette manufacturers, most of the cut stems are dried by airflow expansion drying equipment. The sensory quality of silk. Therefore, the outlet moisture content is the most important process control index in the cut stem drying process, and it is a key process quality characteristic that affects the quality of cigarettes. At present, cigarette manufacturing enterprises regard the moisture content of the cut stem drying outlet as an important indicator of the cut stem drying process. The main control method is to control the upper and lower limits according to the moisture content of the material at the cut stem drying outlet. Some companies use the upper and lower limits plus standard deviation. cont...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a quality control method and system based on air-flow dried cut stems, which solves the problem of non-uniform control of the moisture content change of the cut stems at the outlet in the existing cut stems drying process, and can increase the moisture content of the dried cut stems at the outlet. Batch consistency, improving the quality control ability of the production process

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