PNEUMATIC NOZZLE Russian patent published in 2010 - IPC B05B7/10 

FIELD: technological processes.

SUBSTANCE: invention relates to power engineering and is intended for spraying of liquids and suspensions, for instance coal-water fuel (CWF). Pneumatic nozzle comprises body with inner circular chamber and nozzle for supply of compressed gas in it, pipe installed along body axis for liquid supply, changing into diffuser. At the end of diffuser there is a circular nozzle arranged in the form of axisymmetric head converging towards body axis, and circular slot gas nozzle at the outlet of circular chamber. Slot gas nozzle is formed by body and external border of circular nozzle. Circular nozzle below gas nozzle has concave shape of border. Pipe for liquid supply is equipped with additional nozzle for adding another liquid to the main liquid for spraying. Circular chamber for compressed gas is equipped with additional nozzle for supply of another gas or stem in it. Nozzles for supply of compressed gas and steam into gas chamber have axes displaced relative to plane of nozzle symmetry, as a result of which gas and steam are tangentially supplied to gas chamber.

EFFECT: pneumatic nozzle with such shape of gas and liquid tracks makes it possible to provide for required dispersion for spraying of both low viscous and high viscous liquids and suspensions without quick wear of equipment with the possibility to spray multi-component mixtures and replacement of working gas for superheated steam, and also with the possibility to control dimensions of gas-drop torch.

2 cl, 1 dwg