FIELD: hydraulic mechanization; placer deposits of high-density mineral product in underwater faces. SUBSTANCE: suction device has suction tip with slotted stiff hollow circular shield provided with solid rigid disk placed at inflow face level of suction tip and with lower fixed disk having vertical and horizontal flanges. Circular shield is provided with moving disk installed on lower fixed disk for turning relative to the latter. EFFECT: facilitated extraction of heavy components from underwater deposits. 2 dwg
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