Dosing equipment for automatically controlling by weight the addition of colorants to paints, comprises tube supplied with compressed air, pierced with holes and controlled by automatic valve

摘要

Paint colorant is supplied through an orifice (1) to a reservoir which contains a tube pierced with a large number of holes. Compressed air is delivered (4) to the reservoir and forces colorant through a pipe (6) towards a paint receptacle (14). A balance and circuit (13,16) weigh the added colorant and control the supply via a valve (5)