Pump assembly, system and method for controlled delivery of molten metal to molds
US11136984B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2012 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Mar 28, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/0473
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a centrifugal molten metal pump assembly and associated system for controlled delivery of molten metal to molds. The pump assembly comprises a shaft, an impeller coupled to the shaft, a controller to control a rotational speed of the impeller according to a programmable fill profile while delivering the molten metal to the mold. In some embodiments, the pump assembly further comprises a throttle to manipulate a flow rate or pressure of the molten metal relative to a rotational speed of the impeller. The associated system comprises a melting furnace and one or more holding furnaces, each holding furnace including at least one pump assembly therein. Each holding furnace may be of an open configuration to allow for uninterrupted flow of the molten metal from the melting furnace. The system may provide controlled delivery of the molten metal to the mold at a desired flow rate or pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.