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多级筛分-柔性风选协同的梗签废料烟丝回收系统设计

Design of a reclaiming system for cut tobacco in rejected tobacco stems by combining multi-stage screening with flexible pneumatic separation

  • 摘要: 为解决卷烟生产过程剔除梗签废料中的烟丝浪费问题,设计了一种多级筛分-柔性风选协同的梗签废料烟丝回收系统。该系统主要由三级振动分选筛与三腔六通道柔性风选机构成,被剔除的梗签废料通过三级振动筛分为大物料、中物料、小物料和碎末/烟灰,大、中、小物料分别进入对应的柔性风选腔进行前后两次独立风选,基于物料悬浮速度差异实现烟丝与梗签的精细分离。以A牌号常规卷烟和B牌号中支卷烟为对象进行测试,结果表明:该系统具有良好的分离效果,能够显著提高烟丝回收效率,A、B牌号剔除梗签废料中烟丝回收率分别为88.20%和84.04%,与单一就地风选相比分别提高62.52和44.30百分点。该系统可为降低卷烟物料消耗、优化生产质耗平衡提供技术支持。

     

    Abstract: To reduce waste of cut tobacco in the process of tobacco stem rejecting during cigarette production, a reclaiming system was designed that combined multi-stage screening with flexible pneumatic separation. The system mainly consisted of three-stage vibration screens and a three-cavity, six-channel flexible pneumatic separator. After three-stage vibration screening, the rejected tobacco stems were divided into four categories: large material, medium material, small material and dust. The large, medium and small materials were then fed into the corresponding flexible pneumatic separation chambers for two rounds of independent pneumatic separation. Finally, fine separation of the cut tobacco and stems was achieved based on the difference in the suspension speeds of the materials. The system was tested using king-sized (Brand A) and semi-slim (Brand B) cigarettes. The results showed that this system had a good separation effect and significantly improved the efficiency of cut tobacco reclaiming. The reclaiming rates of cut tobacco from the rejected stems of Brands A and B were 88.20% and 84.04%, respectively, which was 62.52 and 44.30 percentage points higher than the rate achieved using single onsite pneumatic separation. This system provides technical support for reducing material consumption in cigarette production while optimizing the balance between production quality and consumption.

     

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