THERMOABRASIVE TOOL FOR CLEANING SURFACES

摘要

FIELD: processes and equipment for cleaning different type surfaces. SUBSTANCE: tool includes mixing chamber having in its body injection duct for supplying abrasive materials and Laval's nozzle arranged in chamber for generating high speed stream of gas flow. Diameter of outlet opening of diffuser of mixing chamber consists 1 - 1.3 of diffuser diameter of Laval's nozzle. Diameter of outlet opening of diffuser of Laval's nozzle consists 0.5 -0.7 of inner diameter of mixing chamber. Length of mixing chamber consists 6 - 10 diameters of critical cross section of Laval's nozzle. Length of diffuser of mixing chamber consists 3 - 4 diameters of outlet opening of Laval's nozzle. Length of diffuser of Laval's nozzle consists 2 - 3 diameters of its critical cross section. EFFECT: improved design allowing to create uniform density of thermoabrasive flow. 1 dwg