Pretreatment process for tobacco threshing and redrying

Abstract

The present invention relates to tobacco pre-treatment, and is especially sectional tobacco thrashing and redrying pre-treatment process. The tobacco pre-treatment process includes the following steps: spreading the vacuum dampened tobacco leaf; cutting tobacco leaf into three sections including leaf stem, leaf base and leaf tip; moistening the leaf stem and separating in a leaf stem returning device into tobacco leaf stem and inferior tobacco leaf; and sieving leaf base to eliminate sand, moistening and multi-stage separating to obtain tobacco leaf stem and tobacco leaf. The tobacco pre-treatment process has high product quality.

Description

field of invention [0001] The invention relates to a pretreatment process for threshing and redrying of tobacco leaves, in particular to a pretreatment process for segmental threshing and redrying of tobacco leaves. Background technique [0002] Tobacco leaf threshing and redrying process is a tobacco pretreatment process developed by the tobacco industry to adapt to modern commercial production. The so-called "leaf threshing and re-roasting" is used to adjust water content, separate leaf stems, remove mold and impurities, and facilitate storage and preservation. It can be seen that threshing and redrying is a key step in the quality of the tobacco industry. [0003] The existing tobacco leaf threshing and redrying process includes three kinds of tip-cut leaf threshing and redrying processes and whole leaf threshing and redrying processes. Around these processes, some equipment has been designed and produced. Since the leaf threshing and redrying process and equipment wer...

AI Technical Summary

Problems solved by technology

[0015] ①Because the tobacco leaves are long, and the whole leaf threshing process does not have a handle treatment, the tobacco leaves are entangled on the process path, and the flow rate is extremely uneven. The effect of stem separation is achieved by some producers even by increasing the moisture content of the tobacco leaves after moistening. On the one hand, the sensory quality of the tobacco leaves declines. achieve the desired effect;

[0016] ②Tip cutting and leaf beating are carried out, but the treatment of the leaf base and the length and size of the cutting tip are difficult to coordinate. 80-150mm, in this way, the stalk content rate of the tip part is higher, and the cut tobacco size is longer, which has a negative impact on the rolling and burning of cigarettes;

[0017] ③Because the tobacco leaves or leaf base are processed through the whole stem separation line, it is not conducive to soft beating and subdivision, and there is a contradiction between the effect of leaf stem separation and the obtaining of tobacco stems or leaves with good size, it is difficult to coordinate, and it will inevitably lead to tobacco leaf processing. Very uneven, repeated processing, and excessive processing, resulting in a large amount of crushing, small average leaf size, and short tobacco stems;

[0018] ④The entire leaf-stem separation line is relatively long, wind conveying and winnowing will cause tobacco leaves and tobacco stems to lose water, reduce flexibility, and have a negative impact on the leaf-stem separation effect and the obtaining of leaves and tobacco stems of good size. 1, 3rd or 3rd, 4th, adding inter-stage resurgence or long-stem mid-fall devices can solve this problem, which requires a certain amount of investment and a certain site

[0019] 2. Due to the great difference in the quality of each part of a cigarette, especially the poor quality of the handle, after the above processing, once the handle is broken and mixed into the leaves, it will be difficult to separate, which will cause serious damage to the quality. severe impact

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