DISK-TYPE ELECTROSTATIC POWDER COATING METHOD AND AN APPARATUS THEREFOR

摘要

An outer tube (5) is rotated integrally with a rotating disk (17). A powder supply passage (16) for supply of powder particles is formed between an inner tube (15) and an outer tube (5). A lower end of the inner tube (15) is secured to a sub-disk (23) and a distributing passage (25) is formed a space between the sub-disk (23) and the rotating disk (17). Air including powder particles introduced into the separation passage (41) is separated into air and the powder in the separation passage (41) and the particles are fed to the distributing passage (25) through the powder supply passage (16). The powder particles falling in the powder supply passage (16) makes swirl-motion in accordance with rotation of the outer tube (5) and owing to the swirl-motion, the powder particles in the powder supply passage (16) is distributed uniformly in the circumferential direction.