METHOD AND DEVICE FOR FILLING FINE POWDER

PROBLEM TO BE SOLVED: To provide a method and device by which a gas is uniformly led into a powder, thereby obtaining a fluidized state of the powder in which the powder is controlled with the smallest amount of gas, by which the fluidized powder is caused to flow into a filling container of a small diameter or into the back or bottom of the filling container of a complicated shape, and by which the device can be miniaturized and carried, is made easy to operate, can degas from the powder after filling and is capable of highly densely filling the powder without including dust. SOLUTION: Powder-gas separation sieves, which allow passage of the gas but do not allow passage of the powder, are respectively provided in an air inlet opening in the upstream section of a stored-powder fluidization means and in a gas outlet opening in the downstream section of a filling nozzle. The fluidized powder is sealed in a space between the stored-powder fluidizing means and the filling container. The area of a gas outlet opening 12 of the stored-powder fluidizing means is made 1.002 times or larger than the area of the air outlet opening 16 of the filling nozzle. Thus, the current velocity of the gas in the gas outlet opening is made greater than the current velocity of the gas in the gas discharge opening. Accordingly, the fluidized powder is naturally discharged from the stored-powder fluidization means, via a fluidized-powder path and the filling nozzle, into the filling container.