基于烟丝风速比控制的丘堆状风力喂丝工艺  

Dune-shaped pneumatic cut tobacco feeding technology based on velocity ratio between cut tobacco and air

作　　者：廖和滨 李晓刚 张伟 江家森 林郁 LIAO Hebin;LI Xiaogang;ZHANG Wei;JIANG Jiasen;LIN Yu(Longyan Tobacco Industrial Co.,Ltd.,Longyan 364021,Fujian,China;Technology Center,China Tobacco Fujian Industrial Co.,L td.,Xiamen 361012,Fujian,China;China Tobacco Fujian Industrial Co.,Ltd.,Xiamen 361002,Fujian,China)

机构地区：[1]龙岩烟草工业有限责任公司,福建省龙岩市364021 [2]福建中烟工业有限责任公司技术中心,福建省厦门市361012 [3]福建中烟工业有限责任公司,福建省厦门市361002

出　　处：《烟草科技》2021年第2期63-70,共8页Tobacco Science & Technology

基　　金：福建中烟工业有限责任公司科技项目“卷包柔性风力送丝平衡系统应用与研究”[闽烟工(2014)272号]。

摘　　要：为解决风力喂丝工艺风速过高、烟丝速度不可控带来的烟丝分层、造碎较大等问题,采用基于烟丝风速比控制的丘堆状风力喂丝方法,对风力喂丝系统进行了升级改造。以龙岩烟草工业有限责任公司在制品"七匹狼(红)"为对象进行测试,引入烟丝风速比△VAT作为控制参量,增大喂丝流量,增加自动防堵料模块。结果表明:(1)烟丝风送速度控制在7~11 m/s时,能实现低风速的丘堆状风力喂丝,烟丝不会与送丝管道产生过多摩擦,可有效保护烟丝。(2)将△VAT值比例控制在0.70至0.85之间,可以达到最好的烟丝输送状态。(3)风力喂丝系统改进后实现了低风速的丘堆状风力喂丝,风速由不可控降低至11.32 m/s,烟丝速度降低至9.5 m/s,烟丝风速比为0.84,有效解决了原系统烟丝风送速度过快带来的烟丝分层问题,提升了生产的工艺质量。(4)系统改进后烟丝的混合均匀度由5.41%降低至5.16%;同时风速降低有效减少了烟丝消耗,烟丝整丝率下降绝对值由1.27%降低至0.74%,烟丝消耗由32.17 kg·(50 000支)^(-1)降低至31.34 kg·(50 000支)^(-1)。To avoid segregation and breakage of cut tobacco during pneumatic feeding caused by excessively high air velocity and uncontrollable tobacco velocity,the pneumatic tobacco feeding system was modified via adopting a dune-shaped pneumatic cut tobacco feeding method.This method was based on the control of velocity ratio between cut tobacco and air(△VAT).Septwolves(Red)brand cigarettes were tested in Longyan Tobacco Industrial Limited Corporation at an increased tobacco feeding flow,△VAT was introduced as a control parameter and an automatic anti-blocking module was added.The results showed that:1)When the pneumatic tobacco feeding velocity was controlled within 7^(-1)1 m/s,dune-shaped pneumatic cut tobacco feeding at a lower air velocity was realized and excessive friction between tobacco and feeding pipe was avoided to effectively protect cut tobacco.2)When the ratio of△VAT was controlled between 0.70 and 0.85,best cut tobacco conveying status was achieved.3)The modification of pneumatic feeding system realized dune-shaped pneumatic tobacco feeding at a lower air velocity,the air velocity was reduced from uncontrollable to 11.32 m/s,cut tobacco velocity was reduced to 9.5 m/s,and△VAT was 0.84,which effectively prevented tobacco segregation and improved the output quality.4)After the modification,the blending uniformity of cut tobacco decreased from 5.41 to 5.16;meanwhile the reduction of air velocity effectively decreased tobacco consumption.The absolute value of reduction of integral strand proportion changed from 1.27%to 0.74%,and the tobacco consumption per 50000 cigarettes decreased from 32.17 kg to 31.34 kg.

关 键 词：风力喂丝 丘堆状 烟丝风速比 翻箱喂料 防堵料 喷吹 

分 类 号：TS452[农业科学—烟草工业]