| 摘要 |
PROBLEM TO BE SOLVED: To provide a drier of an asphalt plant capable of restraining reduction in the raking-up function and the feed function, by preventing sticking-growth of an aggregate to a blade surface, by heating even a raking-up blade and a check blade in the vicinity of a drum rear end part, while preventing dew condensation on and after an exhaust duct by adjusting the exhaust gas temperature.SOLUTION: An annular chamber 17 is peripherally provided in an outer peripheral part on the drum 4-front end part side so as to surround a drum 4, and this annular chamber 17 and a hot hopper 6 of a drum 4-front end part are connected by a hot blast lead-out duct 19 having a hot blast supply fan 18 in the middle, and a hollow hot blast supply pipe 20 is provided along a drum 4-inner peripheral wall, and while a front end opening part 20a of this hot blast supply pipe 20 is faced in the annular chamber 17 by penetrating through a drum 4-outer peripheral wall, a rear end opening part 20b is faced to an inner peripheral wall in the vicinity of a drum 4-rear end part, and a part of a high temperature hot blast led-out from a burner 7 is supplied still at the high temperature to the vicinity of the drum 4-rear end part via the hot blast supply pipe 20.SELECTED DRAWING: Figure 1 |
