HYDRAULIC-ABRASIVE SURFACE WORKING APPARATUS Russian patent published in 1997 - IPC

FIELD: working of metal and nonmetal surfaces. SUBSTANCE: apparatus has ventilated chamber with rotary table and movable nozzle block for air spraying of abrasive suspension. Each nozzle is provided with return cone-shaped baffling head 27, whose radial channels 31 are connected with axial abrasive suspension supplying channel 22. Channel 30 positioned concentrically to channel 22 is communicated through tangential channels 29 with compressed air supplying channel. Channel 30 is provided with exit conical facet 25. Outer conical surface of baffling head 27 and facet 25 define annular widening slit 33. Head 27 is provided with annular channel 32. EFFECT: increased efficiency, wider operational capabilities and enhanced reliability in operation. 5 dwg