Centrifugal pump having a floating seal ring

Details Centrifugal pump having a floating seal ring Centrifugal pump having a floating seal ring

1998-09-29

2000-07-04

Look, Edward K.

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

Means to seal radial flow pump runner inlet from outlet

415113, 415230, 415231, F04D 2916

Patent

active

060829648

ABSTRACT:
A pump has an impeller, a casing defining a pump chamber around the impeller for receiving a fluid discharged from the impeller; and, a seal mechanism provided between the impeller and the casing to prevent a fluid from leaking from the pump chamber through an annular space formed between the casing and the impeller. The seal mechanism comprises an annular seal member for blocking the annular space leaving an annular gap between the impeller and the seal member. The annular seal member is movably supported so that the annular seal member is supported in a floating condition in the fluid therearound in operation.

REFERENCES:
patent: 3779667 (1973-12-01), Johnson
patent: 4083647 (1978-04-01), Tatkov et al.
patent: 4909707 (1990-03-01), Wauligman et al.
patent: 4948336 (1990-08-01), Mosure
patent: 4976444 (1990-12-01), Richards
patent: 5006043 (1991-04-01), Katsumata et al.
patent: 5518256 (1996-05-01), Gaffal

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