Rotary kinetic fluid motors or pumps – With separating means or guard for solid matter in working...
Patent
1990-01-19
1992-01-07
Kwon, John T.
Rotary kinetic fluid motors or pumps
With separating means or guard for solid matter in working...
75671, 266227, F04D 2970
Patent
active
050785729
ABSTRACT:
A molten metal pump includes a filter that prevents ingestion of foreign material such as dross from molten metal within which the pump is immersed. The filter is a large structure that is secured to the base of the pump surrounding the pump's inlet. The filter forms a cavity adjacent the pump's inlet. The filter has a low porosity while maintaining a high flow rate for the pump. The filter is a semi-toroidal structure that is attachable to a pump base having an upper inlet. The filter surrounds the pump's inlet. The filter includes a central opening through which access can be had to the pump's impeller for purposes of inspection, repair, or replacement without disturbing the attachment between the filter and base.
REFERENCES:
patent: 2832292 (1958-04-01), Edwards
patent: 3255702 (1966-06-01), Gehrm
patent: 4940384 (1990-07-01), Amra et al.
Amra Lutfi
Gilbert Ronald E.
Mordue George S.
Curatolo Joseph G.
Evans Larry W.
Kwon John T.
McCollister Scott A.
The Carborundum Company
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