Patent · US Expired

Method for vacuum filtration

US4211653A · kind A · utility

4Cited by

0References

4Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Eberhard Koppe · Johannesburg, ZA
Peter Schonteich · Cologne, DE
Wolfgang Epper · Bergheim, DE

Key dates

Filing date	Apr 5, 1979
Grant date	Jul 8, 1980
Priority date	—
Expiry date	Apr 5, 1999

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/282
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A rotary vacuum filter for the separation of solids-liquid mixtures has a rotatably supported filter drum having a stationary hollow conduit extending through the interior of the drum which is attached to a vacuum pump. The drum is rotated in a tank containing a mixture to be separated, so that the vacuum action draws the mixture through a filter disposed on the surface of the drum into the interior thereof, where an interior pump removes the filtered liquid and discharges same through the hollow conduit. At no time during the filtration process is air mixed with the filtered liquid, so that subsequent processing to remove air from the liquid is not required.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.