| 摘要 |
A rotary bell cup atomizing apparatus is provided. The bell cup assembly (11) has a rotatable bell cup component (12) driven by a motor shaft (15), the assembly being dimensioned so as to provide an annular gap (52) between the outer, rear surface (14) of the cup (12) and the motor shaft (52), the gap extending an effective and substantial distance axially adjacent the shaft. Solvent channels (54) extend within the cup assembly (11) so as to circumvent the annular gap (52) and discharge into the gap proximate the distal end thereof. During cleaning of the atomizer, solvent introduced into the apparatus passes partially through the paint nozzle (42) to the front surface (46) of the cup assembly (11) and partially through the solvent channels (54), discharging into the annular gap (52) and impinging directly upon the motor shaft (15), thence migrating over the outer surface (14) of the cup (12). Both the inner surface (46) and the outer surface (14) of the bell cup (12) and the motor shaft (15) are simultaneously cleaned. The apparatus can include a replaceable sleeve (62) placed inside the cup immediately adjacent the front surface thereof, in the direct outward radial flow path of outflowing paint, thereby absorbing the force of paint impinging thereon. The sleeve has a hardness exceeding the hardness of the bell cup. The cup may have at least one balancing indentation (64) formed therein immediately adjacent to the sleeve to ensure balance of the apparatus. |
