弛张筛筛面动态特性及其工艺参数的研究

Research on Screen Surface Dynamic Charaters and Tech nical Parameters of Flip-Flow Screen

将筛面视为两端可移动弹性压杆，建立了弛张筛筛面动力学模型，并进行了理论分析.在半工业性弛张筛上进行了筛面动力学参数的实验研究,得到了筛面上任意点位移、速度和加速度的计算公式和沿筛面长度方向上的分布情况.在上述研究工作的基础上，设计了一台弛张筛，半工业性试验表明，它能有效地进行潮湿细粒煤炭的干法深度筛分.

By regarding the screen surface as an elastic bar with a movable end point, a dynamic mod el of flipflow screen surface was set up and analyised theoretically. The dyn amic parameters of screen surfa ce in semiindustry flipflow screen were studied by experiments. The distribu tion formulas of displacement, velocity, and acceleration of the screen surface were obtained. A flipflow screen was designed and the pilot test was carried out. The results sho w that the flipflow screen is an efficient equipment in screening moisture fine coal with dry method.