| 摘要 |
PROBLEM TO BE SOLVED: To suppress dust exhaust from an outside air intake hole of a dust exhaust box. SOLUTION: In this dust exhaust device 100, when a suction blower not shown in a drawing, is operated, the air in a dust removing box 102 is sucked from a dust exhaust hole 130, and the air in a grain conveying passage not shown in the drawing, flows into the dust exhaust box 102 through a cut 118 of a wind selection plate 116. Thus, the dust separated from the grain conveyed in the grain conveying passage is sucked into the dust exhaust box 102. When the dust sucked into the dust exhaust box 102 flows to a suction chamber portion 114 from a wind force selecting portion 112 with the airflow toward the dust exhaust hole 130, dust tends to fall to a bottom wall 104B side by gravitational force. As the flow of the dust toward a top wall 104A side is suppressed, exhaust of the dust from an outside air intake hole 120 formed on the top wall 104A is suppressed. COPYRIGHT: (C)2009,JPO&INPIT
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