Method for removing a filter cake
AssigneeOutomec Oy
InventorsBjarne S. L. Ekberg, Jan O. M. Hognabba, Marti A. Sointusalo
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Abstract
The invention relates to a method for removing a filter cake from a liquid-saturated suction surface, when the liquid in the creation of the filter cake is sucked through the filter surface of the filter element. According to the invention, on the filter surface of the filter element (1) there is formed a liquid film (3) by means of reversed pressure effected through the filter element (1). Essentially immediately after the creation of the liquid film, at least one gas blowing is directed to the filter surface of the filter element (1) in order to detach the filter cake (2) located on the filter surface.
Claims8
A method for removing a filter cake from a liquid-saturated suction surface in a process in which the filter cake is formed by sucking liquid through a filter surface of a filter element, comprising creating a liquid film on the filter surface of the filter element by reversing liquid pressure through the filter element, and essentially immediately after creating said liquid film, blowing gas from an oblique direction to the filter surface in order to detach the filter cake from the filter surface.
Dependencies are inferred from the claim text.