Treatment process for increasing threshing and re-drying long stem rate

Abstract

The invention relates to a treatment process for increasing a threshing and re-drying long stem rate, and belongs to the field of tobacco threshing and re-drying processing. The treatment process specifically comprises the following steps that pretreated tobacco leaves enter a threshing unit and then rotate with a threshing roller to achieve the separation of partial leaves and stems, and the separated tobacco leaves with stems, tobacco stems and free tobacco leaves pass through wind separation equipment to separate the free tobacco leaves out; remaining materials are sieved by two stages of vibrating sieves, the first stage of vibrating sieve separates the tobacco leaves not completely achieving the separation of the leaves and stems out, and the second stage of vibrating sieve separatesthe tobacco stems, a small amount of tobacco stems with leaves and tobacco fines in a remaining mixed material; the tobacco stems and a small amount of the tobacco stems with the leaves are directly collected and conveyed to the vibrating sieves before stem returning and winnowing for stem returning and winnowing, and the tobacco fines are recycled and mixed to a collection conveyer belt of the threshed tobacco fines. The treatment process for increasing the threshing and re-drying long stem rate has the advantages that the tobacco stems generated during threshing and wind separation are separated in advance, repetitive processing is avoided, the long stem rate after threshing is increased, the breakage is reduced, and the needs for the threshed tobacco stem structure in the shred making link are met.

Description

technical field [0001] The invention belongs to the field of tobacco threshing and redrying processing, and in particular relates to a treatment process for increasing the stalk length rate of threshing and redrying. Background technique [0002] Threshing and redrying is the first link in the entire cigarette industry production. The main processes of threshing and redrying include pretreatment, leaf threshing and air separation, redrying and packing. The tobacco leaves after initial roasting are threshed and re-roasted, and then packaged into finished tobacco sheets to provide high-quality raw materials for the silk-making process. Among them, in order to ensure that all indicators in the silk-making process meet the standards, silk-making puts forward many technological requirements for threshing and re-roasting, among which the long-stem rate after beating is one of the important control indicators. [0003] In the process of leaf threshing and re-baking, the main proce...

AI Technical Summary

Problems solved by technology

In the current threshing air separation process, there is no tobacco stem screening device after each stage of threshing air separation, resulting in repeated threshing of many tobacco stems that have completely separated the leaves and stems, affecting the threshing efficiency and after-threshing. Long stem rate

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