叶丝三级风选系统的设计及工艺参数优化  

Design of three-stage pneumatic separating system for cut tobacco strips and optimization of its technological parameters

作　　者：罗一鸣 肖柳宝[1] LUO Yiming;XIAO Liubao(Meizhou Cigarette Factory,China Tobacco Guangdong Industrial Co.,Ltd.,Meizhou 514000,Guangdong,China)

机构地区：[1]广东中烟工业有限责任公司梅州卷烟厂,广东省梅州市514000

出　　处：《烟草科技》2025年第2期76-82,共7页Tobacco Science & Technology

基　　金：广东中烟工业有限责任公司科技项目“烘后叶丝多级风选工艺的研究与应用”(粤烟工[2023]科字第18号)。

摘　　要：为解决叶丝二级风选系统存在的剔除效果不稳定和湿团剔除率低等问题,设计了叶丝三级风选系统,并根据各级风选来料情况不同和剔除工艺任务的差异,确定了各级关键工艺参数的最优组合。结果表明:最优参数组合为一级风门开度为56%(若叶丝含水率低于12%,则一级风门开度降低3百分点)、二级风机频率为31 Hz、三级风门开度为61%。优化后,湿团剔除量提高了1074.30%,梗签剔除量提高了10.70%,梗签含丝量降低了37.84%。叶丝的整丝率、碎丝率和含水率波动量均符合工艺技术标准,且成品烟丝及卷烟产品的主要指标无明显变化。Aimed at improving stable rejection effect and rejection rate caused by wet tobacco caking in the two-stage pneumatic separation system,a three-stage pneumatic separation system was designed and its performance was evaluated.The optimal combination of key technological parameters of all the separation stages was determined based on the differences in raw materials and processing tasks at each separation stage.The results showed that the optimal combination of parameters was as follows:the primary stage valve opening at 56%(the primary valve opening should be reduced by 3 percentage points when the moisture content in the cut strips was below 12%),the second stage fan motor frequency at 31 Hz,and the third stage valve opening at 61%.After the optimization,the amount of rejected wet tobacco caking increased by 1074.30%,the amount of rejected stems increased by 10.70%,and the cut strip content in the rejected stems decreased by 37.84%.Both the proportions of integral and short tobacco strands and the fluctuation in moisture content of the cut strips met the technological standards,and the main indices of the finished cut strips and resulting cigarettes did not change significantly.

关 键 词：三级风选系统 湿团 梗签 叶丝品质 物理指标 

分 类 号：TS452[农业科学—烟草工业]