Control method and system for tobacco shred water content of airflow tobacco shred drying

Abstract

The invention provides a control method and system for the tobacco shred moisture content of airflow tobacco shred drying, and the method comprises the steps: setting the dry airflow temperature of the airflow tobacco shred drying according to a set value, and setting a target value of the moisture content of an outlet of the airflow tobacco shred drying; obtaining an actual measurement value of the outlet moisture content of the airflow tobacco shred drying process, and obtaining a target deviation value of the outlet moisture content according to the target value and the actual measurement value; and establishing a PID feedback control model for adjusting the air speed of the dry airflow according to the target deviation value so as to carry out feedback control on the outlet moisture content, so that the outlet moisture content of the airflow cut tobaccos in the batch is controlled according to the target value. According to the invention, the uniformity consistency of airflow tobacco shred drying in each batch can be improved, and the quality control capability 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 controlling the moisture content of air-dried shredded tobacco. Background technique [0002] In the tobacco processing process, the silk drying process is the most important part of the silk making process. In the heavy processing process that requires a large amount of dehydration, an airflow drying machine is required for processing. The air-flow drying machine uses high-temperature air to instantly dehydrate the shredded tobacco and cut stems, and at the same time uses high-temperature air to shape the shredded tobacco and cut stems, so as to obtain raw materials for shredded tobacco or cut stems with relatively good combustion performance. However, in the actual production process, due to the thermal inertia of high-temperature air, the actual adjustment of air temperature often has a large hysteresis when air-flow drying machine is used fo...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method and system for controlling the moisture content of air-dried shredded tobacco, which solves the problem of inaccurate and uneven control of the outlet moisture content of existing air-dried shredded tobacco, and can improve the outlet moisture content of each batch of air-dried shredded tobacco. Consistency, improve the quality control ability of the production process

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