摘要
干燥过程中,物料分布是否均匀直接影响到干燥介质的作用效果,进而影响物料干燥的均匀性。为了实现这种均匀性,该文设计了一种用于大型立式干燥器的旋转布料与往复匀料相结合的布料装置,并以料面平整度为指标,对影响布料均匀性的主要结构与工艺参数进行了单因素试验和正交试验。结果表明当布料板转速为50r/min,布料板高度为680mm,桨叶角度为45°时,得到的料面最为平整,此时料面平整度变异系数为7.551%,料面最小高度值为最大高度值的62.58%,满足布料均匀的要求。
In the process of drying,material distributing uniformity has a directly impact on the action effects of dry medium,then affects the drying uniformity of material.A distributing device which consisted of revolving distributing and reciprocating raking was designed to realize the uniformity.Single factor and orthogonal experiment were used to analyze the influence of device primary structure and technological parameters with the target of material surface flatness.The experimental results showed that the best parameters combination were at the distributing plate rotate speed of 50 r/min,the height of distributing plate of 680 mm,the installation angle of blade of 45°,under which the material surface was the most uniform and the coefficient of variation was 7.551%,and the minimum heights of material surface accounting for 62.58% of the maximum value.The designed distributing device can meet the requirements of distributing uniformity
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第13期251-256,共6页
Transactions of the Chinese Society of Agricultural Engineering
关键词
设计
试验
干燥器
布料装置
平整度
变异系数
design, experiments, dryers, distributing device, evenness, coefficient of variation
