Molten metal pump with filter
AssigneeThe Carborundum Company
InventorsLutfi Amra, Ronald E. Gilbert, George S. Mordue
Life of this patent
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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 ratio of the surface area of the filter to the inlet area of the pump is very large due in part to a corrugated end wall included as part of the filter. The filter has a low porosity while maintaining a high flow rate for the pump.
Claims24
A molten metal pump, comprising:
- a base member, the base member having a fluid inlet;
- and
- a filter secured to the base member and defining a portion of a cavity therebetween, the filter completely surrounding the inlet, the filter being a generally cup-like structure having an annular side wall and a corrugated end wall.
A filter for a molten metal pump, comprising:
- a porous, refractory, cup-like member, the member being defined by a side wall and an end wall that closes the side wall, the side wall and the end wall creating a cavity, the end wall in cross-section including a plurality of corrugations.
Dependencies are inferred from the claim text.