Spiral roller is used on the return side of the belt as belt cleaner.Spiral steel welded on the spiral roller act as a screw and push the build-up material on the centre to the edge of the belt.It's also can produced in spiral rubber.
螺旋托辊组安装在输送带的回程侧，起清扫作用。焊接在辊体上的螺旋钢可以把输送带回程侧上粘附的物料推到输送带边缘，也可以用螺旋橡胶制造。