The elastic stretching and flip-flow move of elastic sieving plate are analysed.The screening efficiency is ensured,which has the meaning of the screen designing and manufacturing.

• 对弛张筛弹性筛面变形运动进行了研究,分析得出弹性拉伸和筛面挠曲运动可以保证筛分的高效进行,对筛机设计和制造有一定的借鉴意义。