A method for online classification and collection of threshing and redrying tobacco stems

Abstract

The invention provides a method for online screening of tobacco stems. The method comprises the steps of 1, separation of leaves and stems, and preliminary screening of tobacco stems; 2, primary screening, wherein two-stage screening is conducted on tobacco stems obtained after preliminary screening of step 1 by means of a two-stage vibration screening device; 3, secondary screening; wherein screening is conducted on tobacco stems obtained after two-stage primary vibration screening of step 2 by means of a one-stage vibration screening device; 4, redrying tobacco stems obtained in step 3 and then adding a one-stage screening device for screening; and 5, separately collecting tobacco stems with diameters between 3-5 mm and lengths between 20-50 mm and tobacco stems with diameters between 5-7 mm and lengths between 20-50 mm obtained in step 4, and conducting packaging, marking and storage. By the adoption of the method, tobacco stems with uniform and consistent physical characteristics can be provided for shredding, the application range of cut stems is widened after classification, the use ratio of cut stems is increased, and the quality of thin cigarettes is verified to be improved remarkably.

Description

technical field [0001] The invention relates to the technical field of tobacco leaf threshing and redrying processing, in particular to an online classification and collection method for threshing and redrying tobacco stems. Background technique [0002] my country is a big tobacco leaf producing country, with an annual output of 43-45 million tons of tobacco leaves. Roughly according to the average stem content rate of the whole leaf is about 25%, the threshing and redrying plant can produce between 10.75-11.25 million tons of tobacco stems per year, which is a huge quantity; Tobacco stems are affected by many aspects such as tobacco leaf planting area, grade position, physical form, etc. The quality of tobacco stems is complex and diverse, and the quality level is uneven; Under the requirements of cigarette industrial enterprises, the processing and production of collected tobacco stems is relatively simple, and it is difficult to distinguish the origin, variety, grade, etc....

AI Technical Summary

Problems solved by technology

[0006] In order to improve the processing quality of tobacco stems, a Chinese patent discloses a classification and processing method of tobacco stems (publication number: CN102715645 A), which uses a combination of spectral camera classification, multi-stage vibrating screening classification, winnowing classification, etc. The method is complicated in technology and high in investment cost; another Chinese patent discloses a sorting process of threshing and re-cured tobacco stems (publication number: CN 105639715 A), which only classifies and compresses the thickness of the tobacco stems, and the classification is too fine , High input cost, difficult to realize

These methods have improved the efficiency and quality of cut stems to varying degrees, but they still cannot classify the length and thickness of the tobacco stems separately, process and cut them separately, and use them separately, and do not consider the reasonable distribution of the cut stem structure, and Effects on final cigarette product rolling quality and smoking quality

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