目前生产中使用的筛分机主要有圆振动筛和直线振动筛。其中圆振动筛结构简单，工作频率高，特有的运动状态能使筛上物料充分松散，便于物料按粒度分层．从而有利于细物料透筛。因此，它被广泛用于粗、中粒级物料的分级，在选煤厂，被广泛用于原煤的准备筛分。但是，国振动筛的 Currently used in the production of screening machines are round vibrating screen and linear vibrating screen. Including round vibrating screen structure is simple, high frequency of work, the unique state of the movement can make the material on the screen fully loose, easy material layered by particle size. Which is conducive to fine materials sieve. Therefore, it is widely used in the classification of coarse and medium-sized materials. At coal preparation plants, it is widely used in the preparation of raw coal for screening. However, the country vibrating screen