VERFAHREN ZUM KLEINSTUECKIGEN ABSPRENGEN DES FILTERKUCHENS AN EINEM AUSPRESSFILTER

摘要

A pressure filter for liquid-solid mixtures comprises an outer casing, a removable lid for closing the outer casing, a tubular filter element which projects from the lid into the outer casing and on the outside of which the filter cake is deposited, a membrane which during operation folds back between the outer casing and the filter element, a pressure joint on the outer casing for inlet and outlet of a pressure medium, an inlet line which conveys the liquid-solid mixture into the space between the membrane and the filter element and an outlet line which conveys the filtrate from the interior of the filter element. In order to split off small pieces of the filter cake from the filter element, a gaseous pressure medium is admitted into the filter cake formed on the outside of the filter element for as long as the filter cake is still completely or partly surrounded by the fold-back membrane.