DEVICE FOR ABRASIVE TREATMENT OF SURFACE Russian patent published in 1998 - IPC

FIELD: shipbuilding; mechanical engineering. SUBSTANCE: device has working chamber changing to slotted nozzle and member adjoining this nozzle and provided with convex outer boundary for entrapping working abrasive particles from gas flow for reuse and dust separation. Working abrasive-and-air jet shall be brought out of working zone after its interaction with surface being treated; to this end, use is made of slotted nozzle made in form of closed ring; member with outer convex boundary is made in form of funnel changing to discharge pipe. In its lower portion device is provided with limiters to adjust its height relative to surface being treated. EFFECT: entrapping of working medium for reuse; avoidance of dusting of atmosphere. 1 dwg