低强度松散回潮系统的设计及应用

为解决滚筒式松散回潮机由于机械作用和筒内温度过高而引起的片烟造碎大、影响片烟内在品质等问题,根据复烤后片烟在预压打包时自然形成的分层特点研制了预松散装置,对垂直分切后的烟块进行弯曲处理而实现柔性预松散;优化了松散回潮机滚筒内部结构,将长耙钉改为八边形结构的短耙钉,并将筒内按功能划分为松散、展开、回潮和加料4个区,提高物料在加工过程中的针对性。结果表明:低强度松散回潮系统在出料温度较低(≤53℃)情况下,松散率可达到99.5%以上;平均碎片量由86.5 kg/批次降低到79.6 kg/批次,平均碎末量由6.1 kg/批次降低到3.2 kg/批次。新系统有效降低了滚筒内处理强度,减少了片烟造碎,提高了物料受热和回潮的均匀性,较好地保持了烟叶的自然本香,改善了片烟加工品质。 

Design and Application of Low Processing Intensity Loosening & Conditioning System

As a solution to the higher breakage rate of strips caused by mechanical action and the intrinsic quality of strips affected by higher temperature in cylinder loosening and conditioning,a pre-loosening device was developed,wherein the vertically sliced tobacco block was subjected to bending and pre-loosened along the layers formed natureally during baling.The conditioning cylinder was modified by replacing the long spikers with octagonal short ones and divided into four functional sections responsible separately for loosening,spreading,conditioning and casing to facilitate following processing.The results showed that the outlet tobacco temperature was lower(≤53℃),the loosening rate of strips was over 99.5%,the average amount of tobacco scraps reduced from 86.5 to 79.6 kg/batch,and the average amount of tobacco dust decreased from 6.1 to 3.2 kg/batch.The new system effectively reduced the processing intensity,decreased the breakage of strips,promoted the uniformity of heating and conditioning,kept natural tobacco aroma,and improved the processing quality of strips.