KOCHETOV PNEUMATIC SPRAYER Russian patent published in 2018 - IPC A62C31/02 

FIELD: liquids spraying devices.

SUBSTANCE: invention relates to liquid spraying equipment and can be used in firefighting equipment, in agriculture, in the chemical technology devices and in heat power engineering. Pneumatic liquid atomizer comprises hollow cylindrical housing connected to the nozzle, in which the throttling openings are made, housing consists of cylindrical part with outer thread for connection to the liquid supply distribution pipeline union, and two in-series connected and coaxial thereto hollow cylinder-conical belts, and coaxially with the housing, in its lower part, nozzle is fixed, made in the form of cup, in which bottom vertical and inclined throttling holes are made at an angle of 45° to the nozzle axis, and in the housing cylindrical belt, at least one row of radial holes is made, which axes lie in the plane, at that, the number of holes in each row is equal to at least three, at that, among themselves the housing and nozzle form the several coaxial inner chambers: cylindrical ones and located between them conical chamber, wherein one of the cylindrical chambers serves to supply the liquid to be sprayed, and the conical and cylindrical chambers are expansion chambers, and in the nozzle central part and coaxially to it the air (gas) supply tube is fixed, to one of its ends, at its lower part, hollow disk with perforation is attached, turned towards nozzle orifice holes output cross-sections, at that, the perforation in the hollow disk is made in the form of helical groove facing towards the nozzle throttle openings outlet cross-sections, formed by the located inside the hollow disk Archimedes spiral. According to the invention, to the hollow cylindrical belt end portion, axially symmetric to the air supply tube, to one end of which, in its lower part, hollow disk with perforation in the form of helical groove is fixed, made by the Archimedes spiral and facing towards the nozzle throttle openings outlet cross-sections, diffuser is attached, and to the hollow disk solid part, axisymmetric to the air supply tube, throttling tube is attached, which cavity is connected to the air supply tube cavity, and on its outer surface the throttling capillary elements are installed, which cavities are connected to the throttling tube cavity, at that, the diffuser cutoff plane coincides with the throttling tube end.

EFFECT: technical result is increase in the liquid fine spraying efficiency.

1 cl, 1 dwg