SEMI-SUBMERGED PUMP WITH SHAFTING LINE ON PLAIN BEARINGS Russian patent published in 2020 - IPC F04D13/08 F04D29/06 F04D29/47 

FIELD: machine building.

SUBSTANCE: invention relates to pumps for pumping liquids, including those with solid inclusions from reservoirs. Semi-submerged pump with shafting line on sliding bearings consists of pump housing arranged in container with pumped medium, impeller with blades interacting with pumped medium, discharge and support plate. Shaft line is a serial connection of the shafts installed on the plain bearings in the lower and upper suspensions and the seal housing. Pump cavity with excessive pressure of pumped medium created by pump is interconnected with gaps between bushes and bearing inserts, including due to axial channels made in suspensions and seal housing, communicating said pump cavity with cavities of suspensions and sealing housing. In bearing inserts there are holes, and in suspensions and seal housing there are radial channels communicated with said holes, which communicate gaps in bearings with low pressure area through devices determining flow rate of pumped medium through sliding bearings.

EFFECT: higher efficiency and reduced power consumption, increased service life of sliding bearings, simplified design, improved manufacturability and reliability, reduced prime cost.

3 cl, 2 dwg