Patent ID: 6155494
Filing Date: 2000-12-05
Classification: B05B

Abstract:
A rotary nozzle device for emitting a water jet, comprising:an outer casing (5) having an internal chamber (10) with a liquid exit (11) and a lateral surface of revolution upstream of the exit (11),a rotary nozzle (20) positioned within the internal chamber (10) and traversed by an axial conduit (21) for liquid passage, which extends from a lower end of the rotary nozzle and having an upper end, into which the axial conduit opens, positioned against the exit (11), whereinsaid rotary nozzle (20) is positioned coaxially within the internal chamber (10) and has an outer lateral surface of revolution (20') which mates with at least one portion (12) of the lateral surface of the internal chamber to thereby define a sole lateral bearing for the nozzle so that the nozzle is compelled to rotate around an axis of the nozzle, which coincides with the axis of the internal chamber, and furthermore has a lower portion (23) to which a turbine-bladed impeller is fixed, a final portion (24) of the nozzle axial conduit being inclined to the nozzle axis,and further comprises a diffuser means (30) communicating with a liquid source to emit at least one jet directed to strike the turbine blades (25) so as to rotate the nozzle, an upper surface of the diffuser means being at a distance from the lower end of the rotary nozzle to thereby define a free passage for the liquid,which after the liquid has passed through the turbine blades (25) conveys the liquid to the upper end of the nozzle axial conduit (21).