Method for controlling tobacco flavoring/feeding proportion precision

Abstract

The invention discloses a method for controlling tobacco flavoring / feeding proportion precision. The method comprises the following steps of: firstly, adding a material into an electronic balance; secondly, after delaying for T minutes, feeding the material; and finally, performing proportion integration differentiation (PID) control on feeding amount by calculating each parameter. A program of feeding the material after delaying for T minutes is adopted, a feeding flow set value is calculated by using the delay time and a plurality of real-time parameters, and a tobacco flavoring / feeding proportion is controlled by a PID automatic control technology, so that the tobacco flavoring / feeding proportion can be precisely and quickly adjusted according to a real-time error, a compensation factor K is controlled according to feeding practical accumulation amount at the beginning of production, a product can meet the process requirement, the adjusting time is shortened from more than 10 minutes to less than 5 minutes, the production efficiency is improved, and unqualified products are avoided.

Description

technical field [0001] The invention relates to a method for controlling the precision of tobacco flavoring / feeding ratio. Background technique [0002] In the cigarette manufacturing industry, the tobacco flavoring / adding process is an extremely important process in the tobacco shredded processing process. In the existing production process of tobacco silk thread, the tobacco flavoring / feeding process generally adopts a relatively fixed flavoring / feeding set value mode, that is, the flavoring / feeding set value = electronic scale instantaneous flow rate × feeder setting ratio ± compensation value, adjust the flavoring / feeding through PID automatic control technology, control the frequency converter of the feeding pump, and realize the purpose of flavoring / feeding control. The calculation of the compensation value is generally determined as a fixed value based on experience or through experiments: that is, in the production process, the compensation values ​​used when the er...

AI Technical Summary

Problems solved by technology

Since the compensation value used in the existing control method can only be adjusted periodically in the actual production process, it cannot be adjusted in real time, resulting in poor use effect, untimely adjustment, and low accuracy of flavoring / feeding

According to the cigarette process specification promulgated by the State Tobacco Monopoly Administration, cigarette manufacturers are required to achieve a flavoring accuracy of 0.5% and a feeding accuracy of 1.0% in the production process, while the existing tobacco flavoring / adding ratio accuracy control methods only stay at the current level. Within some process specifications, it is impossible to further improve the requirements of flavoring / feeding precision. In addition, in the manufacturing process, it takes a long time to adjust the material from the beginning of production to the process specification requirements of flavoring / feeding precision, resulting in low product quality. Low production efficiency

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