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 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.
Claims15
A molten metal pump, comprising:
- a base member, the base member having a fluid inlet along one side and an opening in a bottom surface;
- an impeller disposed for rotation within the base member, the impeller being in fluid communication with the fluid inlet and being removable from the base member through the opening in the bottom surface of the base member;
- and
- a filter secured to the base member and defining a portion of a cavity therebetween, the filter completing surrounding the fluid inlet and the opening in the bottom surface of the base member such that the impeller can be removed from the base member while the filter is attached to the base member in said molten metal pump.
A filter for a molten metal pump having a base member, the base member having a fluid inlet along one side and an opening in a bottom surface, comprising;
- a porous, refractory member adapted to be secured to the base member so as to define a cavity therebetween, the member in use completing surrounding the fluid inlet and the opening in the bottom surface of the base member in said molten metal pump.
Dependencies are inferred from the claim text.