Powder coating equipment having zero-sum control of conveyance and supplement air lines

摘要

Powder-coating equipment comprises two throttles (6, 16) each mounted in one of a conveyance-air line (8) and a supplemental-air line (18). The throttles' flow impedance' are adjustable in a motorized manner by providing throttle with its own adjustment motor (4, 14). The adjustment motors, such as electric stepping motors and/or servo-motors are driven by an electronic control unit (2).