CENTRIFUGAL PUMP Russian patent published in 1995 - IPC

FIELD: chemical industry and power engineering. SUBSTANCE: fitted on the shaft in the housing are impeller and preconnected stage at whose inlet jet pump is mounted connected to high-pressure chamber. Jet pump is made in form of cascade of streamlined blades arranged radially and blanked off on side of impeller axis and connected with high-pressure chamber by means of passages made in housing on opposite side. Blade exit portion has rectangular nozzle holes. Sectional area of through-way passage at point where blades are located is increased by amount of occupation of passage by blades. EFFECT: enhanced reliability. 2 cl, 4 dwg