Patent · US Expired

Control device for a rotary valve-controlled jigging machine

US4394260A · kind A · utility

0Cited by

7References

9Claims

0Family size

Assignee

Klockner-Humboldt-Deutz AG · DE

Inventors

Siegfried Heintges · Haltern, DE
Werner Strauss · Kehl, DE
Karl-Heinz Weiffen · Hemer, DE

Key dates

Filing date	Oct 15, 1981
Grant date	Jul 19, 1983
Priority date	—
Expiry date	Oct 15, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03B5/24
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A control apparatus for a rotary valve-driven jigging machine for processing coal or other minerals, particularly for a rotary valve-driven throughput jigging machine whose pulse chambers periodically are charged with compressed air in order to generate a pulse motion and are disposed under the jig screen, is characterized in that the level of the working air pressure in the pulse chambers is changed as a function of changes of the size of the stroke of the separating liquid. The change of the level of the working air pressure in the pulse chambers occurs by a controlled throttling of the outgoing air and/or of the incoming air.

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