Centrifugal pump with an annular shroud
US5171126A · kind A · utility
7Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/126
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal pump has a housing which defines an annular chamber disposed downstream of the impeller and surrounding the shaft seal. The chamber receives a hollow cylindrical or frustoconical shroud which surrounds the shaft seal with spacing and protects it from solid particles in the conveyed fluid. A non-contact type annular seal between the impeller and the housing surrounds the shroud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.