FIELD: pumps.
SUBSTANCE: group of inventions relates to pumps for transfer of highly viscous fluids. Pump (1) for transfer of highly viscous fluids comprises casing (3), input (7), output (8) and closed impeller (5), with possibility of rotation arranged in casing (3) between input and output. Pump has side chamber (6) between impeller disk (4) and casing (3) and includes sealing elements (7a, 7b, 8a, 8b) between impeller (5) and casing (3) on impeller inlet side and outlet side to limit reverse flow through side chamber (6) and to provide fluid medium heating contained in side chamber. Pump has delivery channel (9), leading into side chamber (6), to delivery fluid medium into side chamber (6) in order to reduce friction between impeller disk (4) and casing (3).
EFFECT: group of inventions is aimed at improvement of highly viscosity fluids transfer efficiency.
15 cl, 5 dwg
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