ELECTRICALLY DRIVEN PERIPHERAL PUMP Russian patent published in 2013 - IPC F04D13/06 F04D5/00 F04D29/60 

FIELD: engines and pumps.

SUBSTANCE: proposed pump comprises casing 1 with diameter d bore 2 to house motor 3 with impeller 5, medium casing 7 with working chamber 8 to accommodate impeller 5 and cover 9, inlet and discharge channels 12, 13. Cover 9 is pressed by its flat end to medium casing 7. The latter thrusts against face 11 of casing cylindrical bore 2. Medium casing 7 is composed of disc 15 with central hole 16 and ring 17. Disc flat end face surface 18 faces impeller 5. Three regularly spaced bosses 20 are arranged on opposite face 19 of disc 15 to thrust against end face 11 of casing cylindrical bore 2. Ring 17 is arranged between cover 9 and disc 5. Flanges 21 with width b are made on outer cylindrical surface of disc 15 and ring 17 and calculated by the formula.

EFFECT: higher efficiency.

3 dwg