FILTER DEVICE

摘要

The present invention relates to a method for filtering out of a liquid at least one solid substance comprised therein with mainly tube-shaped filter means, said method comprising consecutively: supplying said fluid containing said substance via axial supply means to said filter means; filtering said fluid containing said substance where said substance remains in said filter means as residue; draining away said fluid; and removing said residue via axial closable discharge means opposite to said supply means out of said filter means, where compressing a predetermined amount of residue to the shape of mainly a solid bar under the influence of pressure in said supplied fluid, when filtering; opening said closable discharge at a predetermined moment; and removing said bar under influence of pressure on said bar exerted by said fluid. With the use of a filter device according to the present invention a filtering process does not have to be interrupted in order to clean the filter means, since a compact accumulation of residue formed during a filtering process under pressure from the supplied flow of liquid is ejected in its entirety by opening the closeable second discharge means, whereafter the filtering process can be immediately resumed.