Powder processing apparatus

Details Powder processing apparatus Powder processing apparatus

1989-06-09

1990-11-06

Nozick, Bernard

Coating apparatus

Projection or spray type

Coating moving mass of solid particulate work

34 57D, 55474, B05C 900

Patent

active

049676881

ABSTRACT:
A powder processing apparatus of the fluidized bed type wherein air is blown into a cylindrical container through its bottom to perform various treatments while keeping powder in the container in fluidized condition. Air fed in through an opening in the bottom surface of the container is introduced into a rotating hollow frusto-conical body and is allowed to blow out in the centrifugal direction from an air diffusion clearance defined between the skirt end of the frusto-concial body and the bottom surface of the container, thereby forming a fluidized bed of powder. The portion of the bottom surface around the opening rises and/or a member made of air-permeable material is installed in the opening in the bottom surface to prevent passage of powder; this arrangement, coupled with the air current blowing out of the air diffusion clearance, prevents entry and hence flow-out of powder.

REFERENCES:
patent: 2085947 (1937-07-01), Booth
patent: 2761769 (1956-09-01), Elder
patent: 3802674 (1974-04-01), Hori
patent: 4323312 (1982-04-01), Glatt et al.
patent: 4556175 (1985-12-01), Motoyama et al.

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