FIELD: removal of ice from opened water body surfaces, particularly for fish protection.
SUBSTANCE: ice-hole forming device comprises hollow body, supply channel and discharge channel connected to upper body part. The device also has drive connected to screw blade by means of shaft. The screw blade is installed in lower body part provided with floats and made as two hollow cylinders connected with each other and having different diameters. The cylinders are connected by means of body part shaped as truncated cone. The body also has at least one guiding means mounted at conical body part outlet in flow direction. Shaft is provided with shell. Gap between the shell and the shaft is filled with non-freezing lubricant.
EFFECT: increased reliability and operational efficiency.
1 dwg
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