Automatic proportioning paint spray system

摘要

Apparatus is disclosed for spraying paints wherein the paint comprises a predetermined ratio mixture of at least two components, and wherein the ratio of these components is controlled automatically as they are delivered to a spray gun and prior to mixing, by means flow-sensing devices which generate flow-representative signals to a control unit. The control unit calculates the appropriate ratio and adjusts a flow regulating device in at least one of the component lines for ensuring continued flow at the desired ratio.