Pump

Details Pump Pump

1976-01-12

1977-05-17

Raduazo, Henry F.

Rotary kinetic fluid motors or pumps

With lubricating, sealing, packing or bearing means having...

For shaft sealing, packing, lubricating or bearing means

415170A, 277 27, F04D 2908, F04D 2922

Patent

active

040239187

ABSTRACT:
This invention relates to a device for balancing radial forces in rotor dynamic machines, especially centrifugal pumps which are provided with a seal between the pump impeller and the surrounding pump housing. A stationary seal ring is provided with two or two groups of notches. These are arranged peripherally and one of the groups of notches is exposed to the interior of the pump housing and the second group of notches is exposed to the surroundings, generally atmospheric. A pressure differential then exists which brings about a radial force on the impeller in a direction opposite that caused by radial reaction forces from the surrounding pump housing.

REFERENCES:
patent: 1146079 (1915-07-01), Krogh
patent: 1326064 (1919-12-01), Keller
patent: 1555023 (1925-09-01), Prokofieff
patent: 2162486 (1939-06-01), Le Tourneau
patent: 2680410 (1954-06-01), Kolb
patent: 2796027 (1957-06-01), Brown
patent: 2811109 (1957-10-01), Brill et al.
patent: 2977142 (1961-03-01), Alford
patent: 3228342 (1966-01-01), Page
patent: 3494291 (1970-02-01), Carter, Jr.
patent: 3512788 (1970-05-01), Kilbane

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