Efficient shredded tobacco winnowing method and equipment

Abstract

The invention provides a method and device for efficiently winnowing tobacco shreds. Tobacco materials are fed into a winnowing chamber through conveying air, and the tobacco materials are loosened by a material equalization roll in the winnowing chamber and evenly distributed in the winnowing chamber; winnowing air is fed into the winnowing chamber, suspension winnowing is carried out on the tobacco materials in the winnowing chamber, and sundries are separated out; and meanwhile, the caked tobacco materials are suspended on air equalization plates in the winnowing chamber and are repeatedly jolted to be loosened under the action of upward blown winnowing air and gravity. A multilevel winnowing scheme is further designed, the amount of the materials subjected to secondary winnowing is greatly reduced, and therefore the purity of the tobacco shreds is improved, and energy consumption for winnowing is effectively reduced. According to the method and device, the winnowing efficiency is high, the purity of the tobacco shreds is high, and crushing is greatly reduced.

Description

technical field [0001] The invention relates to a high-efficiency shredded tobacco winnowing method and shredded tobacco winnowing equipment. Background technique [0002] The stems in the shredded tobacco need to be removed during the processing of the shredded tobacco, so as to improve the efficiency and the quality of the cigarettes in the shredded tobacco rolling process. The shredded thread is generally air-selected to remove the stems after the shredded tobacco is dried, and the shredded tobacco-containing stems removed during the crimping and wrapping process are also extracted for reuse. Existing technology of removing stems from shredded tobacco mainly contains the following types. [0003] Tobacco shredded stems removed during crimping and wrapping are extracted and reused. HT is generally used to increase temperature and humidify the mixture of shredded tobacco stems to loosen the shredded tobacco and increase the density difference of shredded tobacco stems. Af...

AI Technical Summary

Problems solved by technology

The mixture of shredded tobacco and stem sticks removed from the cigarette rolling machine has undergone multiple winnowing during the whole process of shredded tobacco. This method does not change the physical state of the mixture of shredded tobacco and stem sticks after cooling the cut tobacco. It is difficult to achieve the separation of cut tobacco and stem sticks. Separation, the two combing rollers of the combing equipment rotate inward at the same time, which will not only cause the shredded tobacco to be broken, but also squeeze the shredded tobacco to form new shredded tobacco agglomerates, and finally it is difficult to separate the shredded tobacco stem sticks. The actual use effect also proves that got this

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