Single-shaft type crushing device

Provided is a single-shaft pulverizer that continuously pulverizes soft waste, such as paper diapers, to a uniform size. The present invention is provided with: a cuboid-shaped frame; the rotating shaft penetrates through the cuboid-shaped frame body; a driving device that drives the rotating shaft; a cutter which is a disc-shaped cutter detachably attached to the rotating shaft in the housing, and which has U-shaped cutter recesses having a predetermined predetermined depth at predetermined predetermined intervals along the outer circumference of the cutter; a disc-shaped spacer which is detachably attached to the rotating shaft in the housing, is attached between adjacent cutters, and has an outer diameter smaller than the outer diameter of the cutters; and a blade that is attached to the side surface of the housing and is spaced apart from the outer peripheries of the cutter and the spacer by a predetermined gap, the cutter having a cutter groove extending in the circumferential direction on the outer peri