MODEL SERIES OF CHEMICAL VERTICAL PUMPS (VERSIONS) Russian patent published in 2014 - IPC F04D7/02 F04D13/08 F04D29/22 F04D29/08 

FIELD: engines and pumps.

SUBSTANCE: every representative pump of proposed model series includes identical design system. Every rotary semi-submersible pump is equipped with thrust plate. Housing of every pump comprises running section housing and suspension case locked therewith and secured to thrust plate from below. Pump incorporates exposed or closed impeller. Mean gradient of vane axis mounting angle and identical gradient of angular configuration of vane channel median axis makes (0…7.0) rad/m over vane length. Vanes and channels feature invariable or variable curvature. Impeller discs are protected from outside and rear side by hydraulic locks composed by impellers. Impeller vane radius is sufficient for development of hydrodynamic counter pressure to sustain pumped medium head under pump standard operating conditions at 0.25 of vane length from vane near-root point 0.45R from impeller axis. Said main disc is equipped with circular ledge making an open circular channel with impeller hub wall.

EFFECT: simplified manufacture and assembly, longer life, higher reliability and efficiency.

25 cl, 5 dwg