Magnetic liquid filter

Abstract

A machine for filtering particles, in particular magnetically attractable particles, from a liquid comprises a housing having a vessel, a weir in the vessel subdividing same into an elongated treatment compartment having a predetermined compartment length and an outlet compartment, this housing being formed in the treatment compartment with a sump, and an inlet for introducing a liquid to be cleaned into the treatment compartment and an outlet for withdrawing liquid from the outlet compartment. In addition the apparatus has a carriage displaceable longitudinally on the vessel above the treatment compartment and suspending a vertical carriage frame in the treatment compartment, an array of horizontally extending spaced magnetic bars carried on the carriage frame in the treatment compartment, with the bars each having a bar length measured parallel to this treatment compartment that is substantially less than the compartment length. Respective scrapers are fixed on the housing above the sump and engaging the bars. This carriage with these bars can be displaced longitudinally relative to the housing and scrapers through a distance equal generally to the bar length and thereby scraping particles off the bars, whereby the particles scraped off the bars drop in the treatment compartment.