a granule scraper located above {HEAD ~ the screening ring} in close proximity to said screening ring and being arranged ahead of {TAIL ~ the inlet} for the granules in the direction of rotation of said screening ring, 
a granule scraper located above { HEAD ~ the screening ring } in close proximity to said screening ring and being arranged ahead of { TAIL ~ the inlet } for the granules in the direction of rotation of said screening ring ,
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH