PNEUMATIC NOZZLE Russian patent published in 2018 - IPC B05B7/08 

FIELD: fire safety equipment.

SUBSTANCE: invention relates to the technology of generating gas-droplet jets of increased range and can be used in fire fighting equipment, in agriculture to irrigate land and other industries, requiring the need to create long-range gas-liquid jets. Pneumatic injector contains a fluid and gas supply system and a nozzle. Liquid supply system supplies liquid in two directions, including an axial supply of liquid through the supply pipe and a confusor and a cylindrical nozzle that are successively connected and coaxial with it. Tangential fluid supply is carried out through the coaxial body in the form of a cylindrical cone shell, on the cylindrical part of which a vortex annular chamber with a branch pipe for supplying liquid is fixed. On the edges of the annular chamber two rows of liquid supplying tangential channels are made. In each row there are at least three tangential channels connecting the circular chamber with the cylindrical cavity of the chamber, to which there is coaxially fixed a round plate. Plate is located perpendicular to the axis of the vortex annular chamber and is rigidly connected to the cylindrical cavity of the housing at its end section. Slotted nozzle is attached perpendicular to the circular plate, that is made of a combined and consisting of two mutually perpendicular rectangular parallelepipeds with throttling through holes of rectangular cross section connected to the cavity of the body. To coaxially round plate, to its peripheral part, is fixed a two-phase flow splitter made in the form of a perforated conical surface, covering the slit nozzle with through throttling holes of rectangular cross section, connected to the cavity of the body. To coaxially round plate, to its peripheral part, coaxially to the divider of the two-phase flow, made in the form of a perforated surface of a truncated cone, enclosing a slit nozzle, attached an additional two-phase flow atomizer, made in the form of a perforated surface of the cone, its vertex coincides with the axis of the nozzle. Surface perforation coefficient is less than of a two-phase flow divider made in the form of a perforated surface of a truncated cone.

EFFECT: technical result of the invention is an increase in the efficiency of the formation of a gas-droplet jet and the expansion of its delivery zone.

1 cl, 2 dwg