回转式烘干机扬料板结构和扬料量关系的数值分析  

Numerical Analysis on Relation of Lifting Plate Structure and Uplift Capacity in Rotary Dryer

作　　者：李妙玲[1] 姚永玉[1] 赵红霞[1] 

机构地区：[1]洛阳理工学院机械工程学院,河南洛阳471023

出　　处：《煤矿机械》2017年第3期50-52,共3页Coal Mine Machinery

基　　金：全国建筑材料行业科技创新计划项目(2015-M1-2)

摘　　要：通过分析物料在回转筒体内的运动与料幕形成规律,建立了折弯形扬料板物料持有量与其折弯程度和安装方式之间的数值分析模型,推导了起始扬料角和终止扬料角的计算公式。起始扬料角与扬料板结构尺寸、安装形式及物料填充率都有关系,而终止扬料角与物料填充率无关;理论上可以使扬料终止角越过筒体断面水平轴线,消除或减小风洞。根据建立的多参数耦合模型,可以直接选择合理的扬料板制造和安装角度组合形式,使扬料量达到最大、料幕密度最大、且料幕均匀布满整个筒体空间。该研究结果为优化扬料板结构尺寸和安装形式提供理论依据,有助于提高设备的烘干效率。The motion of materials in the rotating cylinder and the formation of material curtain are analyzed. A numerical analysis model is established about holding material quantity, bending degree and installation method of the L-shape lifting plates. The calculating formulas are deduced about the start lifting angle and the termination lifting angle. The start lifting angle is related to the structure and installation form of a lifting plate and the material filling rate, while the termination lifting angle is nothing with the material filling rate; in theory, the termination lifting angle can cross the horizontal center axis of the cylinder section, to eliminate or reduce wind tunnel. According to the established multi-parameter coupling model, the manufacturing and installation angles of the lifting plates can be directly selected and reasonably combined to reach the maximum quantity of the holding materials and the maximum density of the material curtain, at the same time the throwing materials cover the entire cylinder space. The results of this study provide a theoretical basis for the optimization of lifter structure size and installation form, which is helpful to improve the efficiency of drying equipment.

关 键 词：回转式烘干机 扬料板 物料持有量 数值分析 建模 

分 类 号：TH113[机械工程—机械设计及理论]