ROTATIONSZERSTÄUBUNGSKOPF

摘要

A rotary atomization head capable of reliably washing a paint deposited on the outer circumference of a bell cup. In a bell cup (11), there is formed a solvent passage (16) for providing communication between a paint sump (15) and the outer circumference (11H) of the bell cup (11). An annular guide (17) is formed on the outer circumference of the bell cup (11). At the time of washing a rotary atomization head (10), a thinner, as injected from a solvent feed nozzle (6), flows through the paint sump (15) and the solvent passage (16) into a solvent diffusion chamber (18) which is formed between the bell cup (11) and the expanded portion (17B) of the annular guide (17). The thinner diffuses all over the circumference of the bell cup (11) in the solvent diffusion chamber (18) and flows on the outer circumference (11H) of the bell cup (11) toward a discharge end edge (11D). As a result, the paint is washed off the outer circumference (11H) of the bell cup (11).