CENTRIFUGAL VORTEX PUMP Russian patent published in 2012 - IPC F04D1/00 

FIELD: engines and pumps.

SUBSTANCE: pump includes housing 1 with axial suction and delivery branch pipes 2, 3. Impeller 4 with curved channels is installed in housing 1. Pump is equipped with shutoff device 5 adjacent to impeller 4 in its circumferential direction and distributor 6 installed in housing 1 from central part of impeller 4. Distributor 6 and shutoff device 5 are installed with possibility of occasional simultaneous insulation at least of one of impeller 4 channels at its rotation. In addition, radial grooves are made on periphery of wheel 4 between curved channels with possibility of vortex formation of pumped medium between impeller 4 and housing 1 during the operation. Distributor 6 made in the form of sleeve with one or more opening 11, which is fixed in axial branch pipe 2, is installed in the centre of impeller 4. Shutoff device 5 is made in the form of ring with one or more inclined side slots 10 with possibility of periodic connection of curved channels and radial grooves to branch pipes 2, 3 at rotation of impeller.

EFFECT: use of invention allows creating pump with easy design and reliable operation with increased efficiency and head.

7 dwg