CENTRIFUGAL PUMP Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to pump building and can be used in pumping and turbopump units. Proposed centrifugal pump has housing, shaft with fitted-on balanced impeller installed for axial displacement and cylindrical supports located on beads of driving and driven disks of impeller at its both sides and forming, together with impeller, radial supports and axial discharge devices. Beads of driving and driven disks are located on outer diameter of impeller. Cylindrical supports of impeller are made in form of support and thrust bushings. Support bushings are placed in housing to enclose beads of impeller with radial clearance, thus forming radial supports. Thrust bushings, whose minimum diameter is equal to diameter of impeller inlet, are located on end face surfaces of housing at side of impeller with end face slots relative to impeller, thus forming axial discharge devices. Area of through section of each end face slot does not exceed area of through section of radial clearance in radial support at side of discharge device. Impeller is made rectangular in diametric section. EFFECT: simplified design of pump, increased its service life. 3 cl, 1 dwg