APPARATUS FOR DUST-FREE SAND BLASTING OF SURFACE Russian patent published in 2007 - IPC B24C3/00 

FIELD: sand blasting of surfaces, namely dust free sand blasting procedures.

SUBSTANCE: pressure-suction head includes sand blasting jet, mixing chamber designed for suction off products of cleaning and abrasive. Mixing chamber is communicated through hose with pressure-suction head and it has water collector connected with water supply source. Collector is communicated with air nozzle for feeding compressed gas by means of ejector used for connection of pressure-suction head with mixing chamber and for creating evacuation in ejector, pressure-suction head and in connection hose. Chamber is also provided with mixer for obtaining suspension. Outlet plane of mixing chamber and inlet plane of mixer are mounted with mutual gap; inner diameter of mixer exceeds inner diameter of mixing chamber.

EFFECT: simplified design, enhanced labor conditions.

2 cl, 1 dwg