PNEUMATIC PULSATOR FOR STIMULATION OF MINERAL RESERVOIR Russian patent published in 1997 - IPC

FIELD: mining industry; may be used in mineral mining for intensification of mining of loose minerals through boreholes and in geological prospecting, decolmatage of water intake boreholes zone and in other branches. SUBSTANCE: pulsator for mining minerals from borehole includes agent supplying tube whose upper part is communicated with metering device of flexible balls, and its lower part has valve seats with ball deflectors. Each seat has channel with upper conical part which passes into cylindrical one. Novelty consists in that cylindrical part of seat is made with cutout whose cross-section equals at least one half of cross-section area of seat cylindrical part. EFFECT: higher efficiency. 2 cl, 9 dwg