在选煤厂，由于分选作业或者用户对物料粒度有要求，需　　设煤的准备筛分和最终筛分，这两种筛分方法一般都是通过胶带输送机将煤给入溜槽再给入筛分机械完成筛分过程。 随着现代选煤工业对设备大型化（单机处理能力增大）的要求，筛分机械筛面的宽度增加成为必然，因为当其它 In the coal preparation plant, due to sorting operations or user requirements on the material size, the need for coal preparation screening and final screening, the two screening methods are generally through the belt conveyor coal into the chute and then into Screening machinery to complete the screening process. With the modern coal preparation industry for large-scale equipment (single handling capacity increase) requirements, the screening machine screen surface width becomes inevitable, because when other