The present invention discloses a device introduced into a tip for spraying droplets, which provides for the control of the flow, distribution and formation of spray droplets, within the spectrum of droplet sizes considered as aerosols (< 50 µm), specially aiming the control of the current vector insects which transmit human disease epidemics and, manufactured for assembly on powered backpack equipment for spraying/atomizing liquids, in such a way to allow the application in closed and difficult access areas, where motor vehicles are not able to arrive.The present invention comprises a body (1) which has in its inner part, in the central region, a tip (11), of geometry of the venturi type, configuring an area for constriction to the passage of air flow, linked to the cylindrical casing (5) and a second low pressure chamber (12), and the geometry of the tip (11) causes the increase in the speed of the air flow and the consequent reduction in the pressure, thus causing the suction of the liquid and the formation of the droplets by the disruption of the surface tension when the air stream is passed through said tip (11).
