The paper probles the theoretical calculation of the spiral conveyor leaf,and gets conclusion that circule without slit is more economical than circule with slit after contrasting.

• 对螺旋输送机叶片下料的理论计算进行了探讨,分析得出:螺旋输送机叶片采用不带缺口的圆环比带缺口的圆环更具经济性。