CENTRIFUGAL ONE-PIECE ELECTRICALLY-DRIVEN PUMP FOR AGGRESSIVE FLUIDS Russian patent published in 2010 - IPC F04D13/06 F04D7/06 

FIELD: engines and pumps.

SUBSTANCE: invention relates to pump production. Pump drive induction motor casing and pump housing are made integral. Pump split housing consists of central part 1 furnished with support plate 3 and detachable part 2 accommodating bearings 16, 17 of impeller 5. Motor casing is formed by stator plate 3 supporting magnetic core 7 secured thereto with the help of thrust disk 6 and pump housing wall with outer circular ledge. Said wall has inner and outer ledges embracing the hub of rotor 9 supporting magnetic core 10. Magnetic cores are separated by a gap. Volute chamber 4 and impeller 5 are made from material resistant to pumped over medium. Chamber 4 is made integral with pump housing, packer 33, rings 34 and labyrinth ledges 23. Pump impeller 5 and motor rotor 9 are rigidly jointed together to make a single unit. Chambers of volute chamber 4 and motor casing are separated by pump housing wall.

EFFECT: compact design, expanded performances, higher reliability and lower costs.

4 cl, 2 dwg