| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrusting screw for a roll compactor which can stably extrude a granulation raw material within a hopper into each roll, and further, in which a molding of satisfactory quality can be produced. SOLUTION: Regarding the thrusting screw 10 provided within a hopper 12 of a roll compactor 11 subjecting a granulation raw material obtained by kneading a fine-powdered material with a binder to press molding, and further installed by two or more numbers along the axial directions of rolls 13, 14 for press molding as a pair arranged at the lower part of the hopper 12, at a spiral screw blade 16 provided around a rotary driving shaft 15, a carrier blade with a large inclination angle feeding the granulation raw material to the lower part of the hopper 12 from the base side to the tip side of the rotary driving shaft 15, a consolidation blade with an intermediate inclination angle for deairing gas included in the granulation raw material carried from the carrier blade, and a thrusting blade with a small inclination angle applying thrusting force for thrusting the granulation raw material fed from the consolidation blade to the rolls 13, 14 for press molding are formed. COPYRIGHT: (C)2008,JPO&INPIT
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