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Fundamental and applied issues of mining

2020 year, number 2

EXPERIMENTAL STUDIES OF PNEUMATIC IMPACT DEVICE WITH A REDUCED SPECIFIC CONSUMPTION OF COMPRESSED AIR

P. N. Tambovtsev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Pneumatic impact device, valve air distribution, experiments, operating cycle, pressure diagrams, compressed air consumption, impact energy

Abstract

The article presents the results of experimental studies of a pneumatic impact device, the air distribution system of which has two controlled chambers of compressed air and four valves. This pneumatic impact device has an efficient operating cycle with a reduced specific consumption of compressed air. The operating cycle of a laboratory prototype was investigated and its main operating parameters were determined: frequency and energy of impacts, compressed air consumption. A comparative analysis of experimental results with the results of numerical simulation is carried out.