Spraying device for a wheel washing machine

A spraying device for a wheel washing machine (1), particularly for vehicle wheels (R) having a minimum radius (R1) and a maximum radius (R3), said machine comprising: a washing chamber (4) in which at least two parallel rollers (7, 8) are arranged for a wheel (R) designed to be washed and dried to be laid and rotatably driven thereon in a washing position; supply means (11, 12) for supplying washing liquid (L), having a longitudinal axis (A) and arranged in said washing chamber (4); ejector means (17), for ejecting said washing liquid (L) in the form of substantially flat jets, transversely facing said wheel (R) to be washed and formed in said supply means (11, 12), said ejector means comprising at least an ejecting groove (36) which is diagonally oriented with respect to said longitudinal axis (A) of said supply means, with a jet dividing and deflecting apparatus (37) mounted in front of it, for dividing and deflecting said jets (17) into at least two jets defining respective spraying areas (A1, A2).