薄层物料双面喷射式加料系统的研制与应用

Development and Application of Double Side Injection Casing System for Thin Layer Material

为解决传统滚筒加料系统加料均匀性差、料液有效利用率低和物料粘附等问题,根据薄层物料双面加料更加均匀的原理,研制了薄层物料双面喷射式加料系统。该系统主要由松散均布、高速摊薄、双面多点喷射加料和过滤吸附等装置组成。通过对物料进行摊薄,形成稳定的物料帘,在物料帘的双面实施多点喷射加料,保证料液施加的均匀性;通过排潮抽吸风使悬浮的雾化料液穿过物料层,利用物料层的吸附过滤作用,提高料液的利用率;加料腔为不对称多孔罩式结构,使腔体内外气压保持平衡,减少物料与腔壁的接触。利用"黄金叶(硬帝豪)"对双面喷射加料和滚筒加料两种方式的加工品质、产品质量、主流烟气成分和能耗物耗进行对比试验。结果表明,与滚筒加料方式相比,采用薄层物料双面喷射加料方式,加料精度为0.08%,加料均匀系数提高1.69百分点,料液有效利用率提高13.7百分点,物料粘附量减少4.1 kg/批次;卷烟感官质量提高0.5分;综合加工成本节约6.97元/箱。该系统有效提高了片烟加料的均匀性和料液有效利用率,避免了物料粘附现象,改善了卷烟感官质量,节约了能源和原材料消耗。

Aiming at the problems of uneven casing,low casing utilization and tobacco buildup on cylinder wall associated with traditional casing cylinder,a double side injection casing system for thin layer material was developed.The casing system was mainly composed of loosening and distributing device,high-speed thin layer spreading device,double side multi-point injection casing nozzles,filtrationadsorption device,etc.Strips were spread to form a continuous strip curtain,casing was injected via nozzles on both sides of the strip curtain to ensure casing uniformity.The floated atomized casing droplets were drawn through the strip layer by means of suction air,and the utilization of casing was promoted by the filtrating adsorption of strip layer.The casing chamber was in the form of asymmetric perforating hood to keep the pressure in balance between inside and outside of the chamber and minimize the contact between strips and chamber wall.For casing cigarette brand＂Golden Leaf＂（YDH）,the new casing system and casing cylinder were compared in terms of processing quality,product quality and the consumption of energy and material.The results showed that,the new system＇s casing precision was 0.08%,its casing uniformity coefficient and casing utilization increased by 1.69 and 13.7 percentage points respectively,the amount of tobacco buildup on the wall reduced by 4.1 kg/shift,the score of cigarette sensory quality raised by 0.5 points,and the comprehensive processing cost saved by 6.97 RMB yuan per case.