Powder dispersing apparatus with movable powder storing member

A powder dispersing apparatus comprising:

• a hollow closed pressure vessel having an air supply port;
• a suction nozzle mounted to a top portion of said closed pressure vessel and having a cylindrical portion projecting into said closed pressure vessel, said suction nozzle being formed with a tubular passage having a suction port at a lower end of said cylindrical portion and a discharge port opening outside said closed pressure vessel;
• a scraper fixed to said lower end of said cylindrical portion of said suction nozzle so as to be spaced a given distance therefrom, said scraper having a scraper blade located just under said suction port;
• a powder storing member for storing powder, said powder storing member being mounted in said closed pressure vessel so as to be rotatable and vertically movable so that said scraper and said cylindrical portion of said suction nozzle are inserted in said powder storing member with a given space defined between an outer circumferential surface of said cylindrical portion of said suction nozzle and an inner circumferential surface of said powder storing member to form an annular air passage;
• means for rotating said powder storing member;
• and
• means for vertically moving said powder storing member.