介绍了煤炭粒度分级筛的结构及工作原理,通过试验研究了引起分级筛煤炭卡堵的原因以及影响卡堵率的主要因素,并对分级筛工况参数与卡堵率之间的关系进行了探讨。研究表明:适当提高分级筛激振器工作频率及振幅有利于减少卡堵问题,但同时也会降低分离效率。 This paper introduces the structure and working principle of the coal sizing grading sieve, and studies the causes of the camber blocking in the sizing coal and the main factors that affect the camber rate. The relationship between the caving parameters and the camber rate is also studied Discussion. Research shows that: Appropriately increasing the operating frequency and amplitude of the classified sieve exciter will help to reduce the plugging problem, but at the same time it will also reduce the separation efficiency.