FIELD: soil or rock drilling; mining.
SUBSTANCE: invention relates to drilling of deep wells, namely to near-bit chutes of slurry. Proposed device comprises shaft, screen, rotor and baffle. Shaft is made integral with flange and single-stage vane pump. Device is equipped with a net having a lower cover provided with branch pipes, a top cover, which inner surface has grooves and forms a single-stage mill with the upper surface of the flange having grooves. Covers have holes, shaft is installed through these holes.
EFFECT: improving operating efficiency and reliability of the device.
1 cl, 4 dwg
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