To remove dust accumulated at a passage returning to a hot blast chamber in a grain dryer in which discharged air is utilized again so as to dry grain.
There are provided a grain drying part (2) for acting drying air generated by a combustion burner (7) against grain, a discharging fan (6) for discharging drying air out of a machine, a circulation duct (31) for returning the discharged air discharged by the discharging fan (6) to the grain drying part (2) and a discharged air adjustment body (32) for adjusting an amount of discharged air returned from the discharging fan (6) into the circulation duct (31). The adjustment body (32) is adjusted and controlled to perform the steps of discharging heat for discharging heat in the grain drying part (2) out of the machine under a state in which the discharging fan (6) is driven after the combustion burner (7) is stopped, and removing dust to increase an amount of discharging air returned into the circulation duct (31) more than that of the heat discharging.
NINOMIYA SHINJI
MUKOYAMA NAOKI
YAKUNAI YUTO
JP2007205600A | 2007-08-16 | |||
JP2010271020A | 2010-12-02 | |||
JPH0194894U | 1989-06-22 | |||
JP2009085486A | 2009-04-23 |
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