Centrifugal pump with electromagnetic actuator mechanism

Details Centrifugal pump with electromagnetic actuator mechanism Centrifugal pump with electromagnetic actuator mechanism

1995-01-06

1996-12-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

For shaft sealing, packing, lubricating or bearing means

415230, F04D 2914

Patent

active

055802150

ABSTRACT:
An electromagnetic seal for a centrifugal pump controls movement of a valve member away from a normally closed position against a sealing surface at the entrance to a reservoir behind the expeller region of the pump, the valve member being controlled by a magnetizable clapper movable within a sealed enclosure toward and away from an electromagnetic coil which may be energized either by the drive motor of the pump or a self-contained generator in the pump driver assembly. Circulation of fluids between the impeller and expeller regions of the pump is enhanced by placement of vents in the impeller and a circumferential groove in the path of flow of fluid through the expeller to create increased turbulence and assist in flushing out foreign particles along with fluid in the expeller region when the pump is in operation. The effectiveness of this combination permits the employment of dry running secondary containment seals which do not require elaborate seal support systems.

REFERENCES:
patent: 3708177 (1973-01-01), Baermann
patent: 4304411 (1981-12-01), Wilcock et al.
patent: 4335885 (1982-06-01), Neshmet
patent: 4439096 (1984-03-01), Rockwood et al.
patent: 4455026 (1984-06-01), Pinkus et al.
patent: 4527802 (1985-07-01), Wilcock et al.
patent: 4915579 (1990-04-01), Whittier et al.
patent: 5228844 (1993-07-01), Klopfer et al.
patent: 5261786 (1993-11-01), Sidelko
patent: 5411366 (1995-05-01), Rockwood

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