Liquid ring pump having tapered blades and housing
US5078573A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05B2250/292
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A liquid ring vacuum pump includes a vacuum pump housing composed by two opposed end walls spaced by an annular wall defining a vacuum pump chamber; a shaft extends into the vacuum pump chamber; a rotor is mounted on the shaft and is arranged eccentrically in the chamber; the rotor includes a rotor central portion and a plurality of vacuum pump vanes extending therefrom toward the annular wall; the rotor central portion and the vanes having at least one lateral edge adjacent the end walls facing the annular wall, the lateral edges and the end walls form a clearance therebetween; and the clearance between the edges and at least one of the adjacent end walls of the vacuum pump chamber increases towards the annular wall. A combination of the liquid ring vacuum pump with a centrifugal pump for pumping multi-phase liquids such as gas and solids containing fiber suspensions of the pulp and paper industry is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.