FX型就地风选器在制丝线上的应用试验

Application Experiments of FX In-site Pneumatic Classifier in Primary Processing Line

为贯彻新的《卷烟工艺规范》 ,进一步提高膨胀叶 (梗 )丝的纯净度 ,改善烟丝结构 ,减小风选过程对烟丝含水率的影响 ,分别用XA型风选器和FX型就地风选器对风选前后的膨胀叶 (梗 )丝的结构、纯净度和含水率进行了试验对比。结果表明 ,采用FX型就地风选器既可满足风选物料纯净度的要求 ,又可以有效地减小风选过程对物料工艺品质的影响。同XA型风选器相比 ,风选过程中膨胀梗丝的整丝率降低、碎丝率增大、含水率降低指标分别由 4 .1%、1.3%、0 .9%下降到 1.2 %、0 .2 %、0 .3%;膨胀叶丝的整丝率降低、碎丝率增大、含水率降低指标分别由 1.9%、1.8%、0 .6 %下降到 0 .8%、0 .4 %、0 .3%。

In order to carry out the new Cigarette Technology Specification, improve the purity and structure of expanded cut lamina and expanded cut stem, and reduce the effect of pneumatic classification on the moisture contents of cut tobacco, the structure, purity and moisture contents of expanded cut lamina and expanded cut stem were tested before and after classifying by XA pneumatic classifier and FX in-site pneumatic classifier. The results showed that the purity of tobacco classified by FX in-site pneumatic classifier was satisfied, and the effect of classification on processing quality of tobacco could be reduced effectively. In comparison with XA pneumatic classifier, the reduction of the rates of long strands (>3.0mm) in expanded cut stem and cut lamina was reduced from 4.1% and 1.9% to 1.2% and 0.8%, the increase of the rates of shorts (<1.00mm) was dropped from 1.3% and 1.8% to 0.2% and 0.4%, and the decrease of moisture content was lowered from 0.9% and 0.6% to 0.3% and 0.3%, respectively.