Bar for supplying fluid detergent mixture in equipment for the automatic cleaning of printing machine cyclinders

Bar for supplying a fluid mixture of pressurized air and detergent liquid in equipment for cleaning rubber-coated cylinders and inking rollers of printing machines, of the type comprising channels (1000) formed on a flat side of the said bar, on which a flat seal (12) capped by a cover plate (13) is extended, thus converting the said channels into ducts, the mixture being supplied to a first of the said channels which by successive Y-shaped bifurcations (B) are multiplied until each final channel supplies only one of the mixture supply holes (10) distributed uniformly along the whole length of the bar, characterized in that at least one restriction (R) of the fluid mixture delivery channel is provided at least upstream of each bifurcation (B), this restriction being shaped in such a way as to guide the mixture to the mid-line of the point of the bifurcation and to induce the formation of a vortex which homogenizes the mixture, so that the latter can be distributed with equal proportions of air and liquid in both channels of the bifurcation.