Magnetic liquid filter

A machine for filtering particles, in particular magnetically attractable particles, from a liquid, said machine comprising:

• a housing having a vessel;
• a weir in said vessel subdividing same into an elongated treatment compartment having a predetermined compartment length and an outlet compartment, said housing being formed in said treatment compartment with a sump;
• means for introducing a liquid to be cleaned into said treatment compartment and for withdrawing liquid from said outlet compartment;
• a carriage displaceable longitudinally on said vessel above said treatment compartment and suspending a vertical carriage frame in said treatment compartment;
• an array of horizontally extending spaced magnetic bars carried on said carriage frame in said treatment compartment, said bars each having a bar length measured parallel to said treatment compartment that is substantially less than said compartment length;
• respective scrapers fixed on said housing above said sump and engaging said bars;
• respective annular nozzles fixed on said scrapers surrounding and directed at the respective bars;
• means for feeding a fluid under pressure to said nozzles to direct annular fluid streams at the respective bars and thereby loosen particles from the bars adjacent the scrapers;
• means for displacing said carriage with said bars longitudinally relative to said housing and scrapers through a distance equal generally to said bar length and thereby scraping particles off said bars, whereby the particles freed from said bars drop in said treatment compartment;
• and
• means for withdrawing liquid from said sump.

A machine for filtering particles, in particular magnetically attractable particles, from a liquid, said machine comprising:

• a housing having a vessel;
• a weir in said vessel subdividing same into an elongated treatment compartment having a predetermined compartment length and an outlet compartment, said housing being formed in said treatment compartment with a sump;
• means for introducing a liquid to be cleaned into said treatment compartment and for withdrawing liquid from said outlet compartment;
• a carriage displaceable longitudinally on said vessel above said treatment compartment and suspending a vertical carriage frame in said treatment compartment, said frame including horizontally spaced end members each having a plurality of vertically and horizontally spaced holes;
• an array of horizontally extending spaced magnetic bars carried on said carriage frame in said treatment compartment, said bars each having a bar length measured parallel to said treatment compartment that is substantially less than said compartment length, said bars further having respective ends received in the respective holes of the end members, said ends of said bars being each formed with a radially outwardly open groove, each of said end members being provided with a slidable element engageable in the respective grooves;
• respective scrapers fixed on said housing above said sump and engaging said bars and including nozzles directed at the respective bars;
• means for feeding air under pressure to said nozzles.;
• means for displacing said carriage with said bars longitudinally relative to said housing and scrapers through a distance equal generally to said bar length and thereby scraping particles off said bars, whereby the particles scraped off said bars drop in said treatment compartment;
• and
• means for withdrawing liquid from said sump.