TURBO-DRIVEN PUMP ASSEMBLY Russian patent published in 1994 - IPC

FIELD: mechanical engineering; pumps. SUBSTANCE: pump discharge branch and turbine outlet branch are arranged coaxially at both sides of housing with spiral inlet. Fitted on lower part of bushing in housing is turbine blade wheel, and on upper peripheral part, pump impeller. Central body arranged over bushing has pump outlet guide vanes rigidly secured in housing. Body is installed on rotating bushing in bearing to form unloading chamber between bushing and body. Disk rigidly secured on end of pump blades over periphery has additional rims of pump blades on central part. All rims form, respectively, radially and diagonally centripetal stages. Guide vanes are arranged between stages. Guide vane assembly is two-tier with flow divider which divides vanes into pump and turbine parts. EFFECT: enlarged operating capabilities. 3 cl, 1 dwg