VAS冷床烟丝回收装置的改进

Modification of tobacco reclaiming device VAS cooling bed

为解决VAS冷床烟丝回收装置中梗签与烟丝分离不彻底,导致剔除物中含有可回收烟丝等问题,对烟丝回收装置进行了改进。增加了一级与二级分离体,通过调节一级和二级分离体内各阻尼板的角度,实现梗签与烟丝的分级分离以及烟丝回收再利用,并采用计算流体动力学CFD对烟丝回收效果进行了数值模拟。以昆明卷烟厂生产的“云烟”3个牌号卷烟共17批次物料为对象进行测试,结果表明:改进后剔除物质量平均值减少2.2 kg/批次,回收烟丝质量平均值提高19.2 kg/批次,烟丝回收率平均值提高14.2百分点。该技术可为提高烟丝回收率、降低烟丝消耗提供支持。

To reclaim tobacco more efficiently,the tobacco reclaiming device VAS(Vibratile Air Separator)cooling bed was modified by adding a first stage separator and a second stage separator.Cut tobacco is separated thoroughly from stems via adjusting the damping plates in the first and second separators.Meantime,the effect of tobacco reclaiming was numerically simulated with computational fluid dynamics(CFD).The modified device was tested on 17 batches of cigarettes of three“Yunyan”brands in Kunming Cigarette Factory.The results showed that the average weight of rejected stems reduced by 2.2 kg/batch and that of reclaimed tobacco increased by 19.2 kg/batch,and the average reclaiming rate of tobacco raised by 14.2 percentage points.This technology provides a support for promoting tobacco reclaiming rate and decreasing tobacco consumption.