| 摘要 |
<p>An isolator (11) for electrically isolating an electrostatically charged, electrically conductive coating material supply line from a grounded source of conductive coating material (10) while continuously transferring coating material from the source (10) to the supply line. The isolator (11) includes a receptacle (21) for a charged coating material reservoir and an insulative housing (59) surrounding the charged coating material receptacle (21). The coating material in the receptacle (21) is fed through an outlet (22) to the supply line for an electrostatic coating device (12), which is electrostatically charged. Due to the conductive nature of the coating material, the electrostatic potential at the coating device (12) is coupled through the coating material, and the reservoir of coating material in the receptacle (21) is likewise electrostatically charged. The coating material from the grounded coating material source (10) is coupled to a grounded nozzle assembly (26) in a housing which is positioned above the charged coating material receptacle (21). The grounded coating material nozzle assembly (26) includes a nozzle (18) in a bottom portion (33) thereof, and the coating material in the grounded nozzle assembly (26) is mechanically vibrated to produce a pulsed jet droplet flow of electrostatic coating material from the nozzle (37) into the charged coating material receptacle (21).</p> |
