| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder supply device, capable of improving the quantitativity in the powder supply for carrying powder raw material along a powder transport passage and supplying the same.SOLUTION: The powder supply device includes: a storage container for storing powder raw material; a powder transport passage having an inlet connected to the storage container and a discharge outlet for discharging the powder raw material; powder carrying means for carrying the powder raw material taken in the powder transport passage from the inlet along the powder transport passage, and discharging the same from the discharge outlet; and negative pressure generating means for applying the negative pressure to the interior of the powder transport passage through the discharge outlet of the powder transport passage. The bulk density of the powder raw material is made uniform by applying the negative pressure to the powder raw material through the discharge outlet to improve the quantitativity. |
