{HEAD ~ A hopper} 30 is fixed to the casing 10 with its opening at {TAIL ~ the bottom} directed to the top end of the gap A between the stator 16 and the rotor 11 
is fixed at
{ HEAD ~ A hopper } 30 is fixed to the casing 10 with its opening at { TAIL ~ the bottom } directed to the top end of the gap A between the stator 16 and the rotor 11
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH