| 摘要 |
PURPOSE:To accurately weight powder, etc., by a constant amount by providing plural rotary bodies to a main body coupled with a hopper and forming plural recessed parts of the same capacity on the same circumferences of the respective rotary bodies. CONSTITUTION:A supply hole 5 provided to the main body 1 is filled with powder, etc., stored in the hopper 11 at all times and when a recessed part 4 of a rotary body 2 is linked with the hole 5, powder falls in and fills the recessed part 4. Then when the rotary body 2 continues to rotate until the recessed part 4 is linked with a through hole 6, the powder is discharged into the through hole 6 and then falls in a recessed part 4 of a rotary body 3 when the recessed part 6 is linked with the through hole 6. Thus, the recessed part is charged and there is no downward pressure applied to the powder in the through hole 6, so the height density in the recessed part of the rotary body 3 is small and has small variance. The powder in the recessed part 4 of the rotary body 3 is discharged from a discharge hole 9 as the rotary body 3 rotates. Thus, rough weighing is performed by the rotary body 2, precise weighing is performed by the rotary body 3, and this weighing operation is carried out intermittently and repeatedly. Higher-accuracy weighing is enabled by using >=3 rotary bodies.
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