The present invention oyster shells, various shells, cockle, clam shell crushing milling equipment, such as flow relates to, and more specifically, forming the outlet (16) having a drum body (10) slot on the top side 15 and the lower opening and closing doors that open in the center (20) having a crushing space (12) therein and The crushing space portion 12 is provided to the high-speed rotation, but by at least one crushing blade 32, the entire drive means 30 once having an outer circumferential edge, in the outer surface of the rotor, through the external a reduction in the load, the whole time while moving outside of the shell and the water flow is provided by forming a distribution as possible perforation holes (33) so that the shell and the entire flow of water once through the holes in the rotating grinding operation that crushed also has the feature is to provide the excellent grinding efficiency by high-speed rotation of the entire time course. ; 展开▼