PUMP FOR TANK Russian patent published in 2006 - IPC F04C2/107 

FIELD: oil industry.

SUBSTANCE: pump comprises working submergible members having housing which is provided with the inlet and receives stator and rotor connected with the engine for actuating the rotor through the shaft, side outlet branch pipe for supplying fluid into the pressure system, and chamber for collecting the settling solid admixture. The pump is provided with the gasket seal for the shaft, sleeve that receives the submergible working members mounted for permitting securing it to the lid of the tank, and gate valve which is in a contact with the outer side of the sleeve through a telescopic or threaded connection and affects the inlet of the pump through radial openings in the top section of the sleeve closing them when the pump is cleaned. The chamber for collecting settling solid admixture is made in the bottom section of the sleeve.

EFFECT: increased longevity and enhanced efficiency.