砂轮外观及形位公差在线检测设备的设计.doc

卖机械专业课程设计，毕业设计：论文图纸全都有。 更多精彩内容请跟我联系 QQ；1315382944 价格好商量 毕 业 设 计（论文） 学生姓名： 学 号： 专 业： 机械设计制造及其自动化 题 目： 连续式颗粒烘干机 2013 年 6月 毕 业 设 计（论文） 中 文 摘 要 连续式颗粒烘干机是一种对物料进行连续烘干的自动化设备，广泛地使用在粮食烘干、颗粒状物料烘干上。我国是粮食生产大国，但粮食的品质并不是很好。粮食的储存是关系到粮食品质的一个重要环节，烘干机的烘干性能是决定烘干品质的重要因素。烘干机可以将粮食烘干到有利于粮食储存的水分含量，对粮食的储存起到了至关重要的作用。本次我设计的烘干机为连续式烘干机，主传动系统、烘干系统均采用电机为动力装置。不同于市面上常见的滚筒式烘干机，相对于其它形式的烘干机机，连续式颗粒烘干机具有稳定性好，烘干效率高，试用范围广，易于控制，使用寿命长等优点，更重要的是连续式颗粒烘干机本身造价低廉，性价比高，便于今后在市场上的推广和应用。 关键词 烘干 颗粒 连续 粮食 毕 业 设 计（论文） 外 文 摘 要 Title: Flexible filamentous particles in the rotary dryer experimental study of space-time Abstract Rotary dryers have been extensively employed across a wide range of industries. The space time of particles in a rotary dryer plays an important role in the drying process. Due to the lack of study on non-spherical particles in rotary dryers, this study focused on flexible filamentous particles and chose tobacco particles as experimental material. The bulk moment of particle and particle space time were investigated in a laboratory rotary drum with a conventional method. Moreover, the influences of rotational velocity, drum slopes, gas flow rate and material flow rate as well as material moisture content were discussed. Furthermore, a revised correlation of the key variables was proposed to estimate the space time to improve existing correlations and propose new correlations for flexible filamentous particles in the rotary drum. Experimental results could reveal the influence of the considered key variables on particle behavior and the space time: the increases of rotational velocity, gas flow rate and drum slope could reduce the space time, while the space time increases with the increases of material flow rate and moisture content. It is also found that the estimation results of the proposed method show good agreement with the experimental findings of the established system. Keywords Rotary dryer;? Flexible filamentous particles;? S