试验室用真空回潮设备的开发与应用

为支撑卷烟行业特色加工工艺及装备研究、解决传统静态真空回潮方式存在的松散效果不理想、回透率低的问题，设计并制作了用于试验室小试验线的正圆柱筒体真空回潮设备，主要包括真空罐体、真空机组、热水器机组、管道系统以及电控系统等部分，设备在具备真空回潮功能的同时，还具备加料的能力。通过开展工艺参数对产品质量影响规律研究、小试验线与大生产线感官质量符合性研究，明确以下几点:①根据工艺参数调整，试验室用真空回潮设备对产品感官质量的影响规律与大生产线设备相同，通过参数优化可实现与大生产线产品感官质量的高度一致；②蒸汽施加时间与物料出口水分呈正相关关系；③动态真空回潮条件下，能有效提升松散效果以及回透率，并保持叶片结构与大生产线产品持平。 

Development and application of laboratory vacuum pre-conditioner

In order to overcome poor loosening effect and low permeability rate in conventional static vacuum pre-condition system, a laboratory use vacuum pre-conditioner with positive cylinder was designed and manufactured.The newly developed vacuum preconditioner mainly consists of vacuum tank, vacuum unit, water heater unit, piping system and electric control system.It has resurgence function and the ability to feed at the same time.Through investigating the influence of process parameters on product quality, the following conclusions can be drawn∶ ① The influence of laboratory use vacuum regressive equipment on sensory quality is consistent with the influence of the mass production line.Through adjustment of process parameters, sensory quality of product processed with laboratory equipment was same to sensory quality of production in mass production line.② The steam application time is positively correlated with material export moisture; ③ Under dynamic vacuum regain conditions, the loose effect and the permeability rate can be effectively improved, and leaf structure can be maintained at the same level as the product in mass production line.