Molten metal pump with filter

Details Molten metal pump with filter Molten metal pump with filter

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 15/04 (2006.01) F04B 39/16 (2006.01)

Patent

CA 2044697

MOLTEN METAL PUMP WITH FILTER 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. In an alternative embodiment, 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.

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