介绍一种井下分级破碎机的工作原理和结构,采用双辊式破碎结构,破碎齿呈螺旋形轴向交错布置于齿辊之上,利用剪切和拉伸原理破碎物料,对于大块物料有翻转破碎的特点,小块物料可直接排出,实现筛分和破碎的双重目的,并概述了破碎辊齿的材质与成型工艺以及在煤矿生产中的应用效果,连续工业性试验生产实践表明,该型分级破碎机整机性能先进,生产效率高、设备性能稳定、处理能力大,过粉碎率低,齿辊磨损低,破碎耗能低等特点。 Describes a working principle and structure of a downhole grading crusher, the use of double-roll crushing structure, broken teeth helical axial staggered arranged above the gear roll, the use of shear and stretching principle of crushing the material for the bulk material Flip broken features, small pieces of material can be discharged directly to achieve the dual purpose of screening and crushing, and an overview of the crushing tooth material and forming process and the application of the results in the production of coal mines, continuous industrial test production practice shows that the Type grading crusher machine advanced performance, high efficiency, stable performance, handling capacity, over the rate of crushing, low gear wear, crushing low energy consumption and so on.