| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a granule feeding device which can miniaturize a detection sensor while being able to detect drop of granules from a feeding rotator if the feeding amount is adjusted to one feeding amount in the whole range of adjustment. <P>SOLUTION: The feeding amount of the feeding rotator 52 by a feeding recess 58 is changed by changing the opening area of the feeding recess 58. The granule feeding device has the detection sensor 90 for detecting drop of granules (a) in a dropping feed pathway 88 for dropping granules (a) from the feeding rotator 52 toward a field. The detection area of the detection sensor 90 in the direction crossing the dropping feed pathway 88 is located in an area smaller than the area where the granules (a) drop from the feeding rotator 52 whose feeding amount is adjusted so that the feeding amount by the feeding recess 58 is the largest in the dropping feed pathway 88, and in an area where the granules (a) drop from the feeding rotator 52 whose feeding amount is adjusted so that the feeding amount by the feeding recess 58 is the smallest. <P>COPYRIGHT: (C)2012,JPO&INPIT |
