The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 1978
Filed:
Jul. 13, 1977
Applicant:
Inventor:
Fritz Strub, St. Gallen, CH;
Assignee:
Filtrox Maschinenbau A.G., St. Gallen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; B01D / ;
U.S. Cl.
CPC ...
364502 ; 210193 ; 364109 ;
Abstract
A method of and an apparatus for controlling the quantity of filter aid fed to a settling filter in a given unit of time during filtration. The pressure drop across the filter is determined and used to provide a first control magnitude, the quantity of liquid flowing through the filter per unit of time is determined and used to give a second magnitude, and the ratio of the first to the second magnitudes is determined as a third control magnitude, the quantity of filter aid delivered to the liquid feed to the filter is adjusted in proportion to such third control magnitude. Various ways of relating each control magnitude to its control variable are disclosed.