ANTIDUST SPRAYER Russian patent published in 2012 - IPC B05B7/12 

FIELD: process engineering.

SUBSTANCE: invention relates to fluid sprayers and may be used dust suppression, fire fighting etc. Proposed sprayer comprises casing, gas feed channel, Laval nozzle arranged on the same axis with said channel, and chamber with fluid inlet and outlet channels. Gas feed channel is furnished with limiting collar. Sprayer casing has inner thread for adjusting nut with inner ledge and rubber O-ring to be screwed therein. Said nut allows varying the width of sprayer annular slit from 0.5 to 3 mm. Efficient dust suppression by snow is ensured at extreme position of Laval nozzle with respect to sprayer outlet at temperature below +3°C. Besides, efficient dust suppression by dispersed fluid is ensured at extreme position of Laval nozzle with respect to fluid feed union at temperatures above +3°C. Water, ionised water, mix of water with diverse admixtures may be used as working fluid.

EFFECT: efficient dust suppression.

1 dwg