Patent ID: 7255547

Claim:
A device for granulating plastic melts, comprising: a granulating head to which a perforated plate provided with melt-discharge openings is attached, the openings being configured to be swept by rotating knives arranged in a knife holding device mounted in a rotatable manner, with the knife holding device being driven by a motor via a drive shaft; a granulating housing enclosing the perforated plate, the housing having at least one housing inlet through which a cooling and transport medium can be supplied to the interior of the granulating housing, the cooling and transport medium flowing with a motion component along the inner wall of the granulating housing from the granulating head toward a housing outlet which is arranged in the end region of the granulating housing opposite to the granulating head and through which the cooling and transport medium can be discharged along with granules; and a magnetic clutch that couples the knife holding device to the drive shaft.