Patent ID: 8529231

Claim:
An apparatus comprising: a rotation body having a plurality of rotary shafts having projections; and a cleaning part disposed adjacent to the projections, having a first rotation hole and a second rotation hole spaced apart from each other into which the rotary shafts are inserted, respectively, and configured to flow a cleaning material provided into the first and second rotation holes, wherein the cleaning part comprises a cleaning body having a chamber formed therein, the first and second rotation holes formed therein, a main injection hole spaced apart a predetermined distance from the first and second rotation holes at an interface between the first and second rotation holes and formed at opposite surfaces of the cleaning body to be in fluid communication with the chamber, a main injection flow path which is bifurcated from the main injection hole to connect the main injection hole to the first and second rotation holes and to connect the first rotation hole to the second rotation hole.