SUBMERGED PUMP Russian patent published in 1994 - IPC

FIELD: pumping fluids. SUBSTANCE: submerged pump has outer and inner cases 2,15, electric motor, pump with guide apparatus 7 and working wheel 5, and top and bottom covers 8,9. Central part of the guide apparatus is mounted for movements relatively faces of vanes of the working wheel 5. Inlet of working wheel 5 is formed of profiled surface of nut 6 set on shaft 4 and central opening of guide apparatus 7. The central opening is smoothly rounded over periphery. Inner surface of guide apparatus 7 is cup-shaped. Guide apparatus is made of non-metal chemically and wear resistant material. Inner case 2 is made of three parts interconnected through tight detachable connections. Stator 1 is rigidly secured to middle part of case 2. Bottom cover 9 is provided with side inlet openings cross-section area of which exceeds area of inlet of the working wheel 5 by 5-6 times. EFFECT: enhanced efficiency. 1 dwg