SELF-SUCKING PUMPING UNIT Russian patent published in 2006 - IPC F04D9/06 

FIELD: pump engineering.

SUBSTANCE: self-sucking pumping unit comprise centrifugal pump (1) provided with sucking branch pipe (7) and buster hydraulic-jet pump (2) which has housing (3) composed of cylindrical-conical converging pipe (4), throat (5), and diffuser (6) connected with the sucking branch pipe (7) of centrifugal pump (1), nozzle (9) mounted inside housing (3), and sucking branch pipe (8). Sucking branch pipe (8) of hydraulic-jet pump (2) is connected with nozzle (9). Nozzle (9) is coaxial to housing (3), and hydraulic-jet pump (2) is provided with branch pipes (10) made of pipe bend for supplying fluid. Branch pipes (10) are mounted for permitting rotation around their axis. The pumping unit is made so that the direction of swirling the fluid caused by branch pipes (10) is opposite to the direction of rotation of the working wheel of centrifugal pump (1).

EFFECT: enhanced efficiency.

1 cl, 5 dwg