Stem Separation System

Abstract

The invention discloses a cut stem separation system which comprises a discharging device, a cut tobacco hopper and at least two air separating mechanisms. Each air separating mechanism comprises a feeding port, a cut tobacco conveying port and a discharging port, the discharging port of an upper air separating mechanism is connected with the feeding port of a next air separating mechanism, a discharging port of the discharging device is connected with a feeding port of the cut tobacco hopper, a discharging port of the cut tobacco hopper is connected with a feeding port of the first air separating mechanism, and the cut tobacco conveying port of the last air separating mechanism is connected with a feeding port of the discharging device. The air volume of the last air separating mechanism can be properly increased when the system performs air separating, most of stems can be removed, cut tobaccos with few stems are returned to the discharging device for performing air separating again, the stems in the cut tobaccos can be sufficiently removed by the aid of repeated cycles, and the cut tobaccos are sufficiently used while ensuring quality of the cut tobaccos, so that the production cost of enterprises is effectively reduced.

Description

technical field [0001] The invention relates to the field of tobacco production, in particular to a shredded stem separation system for separating shredded tobacco and tobacco stems. Background technique [0002] Cigarette technology requires that cigarettes should not contain tobacco stems. In order to meet the requirements of cigarette technology, it is necessary to separate the cut stems. At present, the separation of cut stems is mostly carried out by winnowing, that is, through the difference in the suspension speed of cut tobacco and stem sticks in the airflow. Wind selection, because the suspension speed of shredded tobacco is small and the suspension speed of stem sticks is high, so the wind speed of winnowing only needs to be greater than the suspension speed of shredded tobacco but less than the suspension speed of stem sticks to separate shredded tobacco and stem sticks. But the actual situation is very complicated. For example, after cutting the stem stick, its e...

AI Technical Summary

Problems solved by technology

But the actual situation is very complicated. For example, after cutting the stem stick, its external dimension is very close to the size of shredded tobacco, and the suspension speed is not much different from that of shredded tobacco. Moreover, shredded tobacco will curl up after drying and cooling, and even twist into a ball, causing The surface area of ​​cut tobacco is reduced, and the suspension speed is increased, which will increase the difficulty of winnowing and destemming

[0003] In order to achieve the purpose of fully separating the shredded tobacco from the stem sticks, the existing cigarette makers use two winnowing methods to separate the shredded tobacco from the stem sticks, but this still cannot guarantee that all the stem sticks and sundries in the shredded tobacco can be removed

In order to ensure that cigarettes do not contain tobacco stems, the current common method is to reduce the air volume of winnowing. Although this method can effectively reduce the stems in the shredded tobacco, a large number of shredded tobacco will be removed together with the stems. Cause excessive consumption of shredded tobacco and increase the production cost of the enterprise

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