Pusher pump resistant to corrosion by molten aluminum and having an improved flow profile
US10480500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2014 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jan 6, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D27/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bubble pump having a steel tube pump body having an interior formed from a ceramic material that resists attack by molten metal. The pump further has a nitrogen supply line attached to a lower portion of the pump body. The pump body and nitrogen supply line are covered with a ceramic cloth material that resists attack by molten metal. The pump also includes a discharge head attached to the top of the pump body. The discharge head is formed of a cast ceramic material that resists attack by molten metal and includes a distribution chamber therein which has an ellipsoidal dome shape with a generally flat bottom and an ellipsoidal top. The discharge head also includes two discharge nozzles which have a square cross section. These features provide the inventive pump with extended service life and reduced discharge turbulence of the molten metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.