Patent ID: 7785475

Claim:
A magnetic separation purifying apparatus that makes use of a magnetic force to separate sludge contained in a processed fluid to purify the processed fluid, the magnetic separation purifying apparatus comprising: a rotating filtering body arranged in a water tank and having a cylindrical-shaped filtering net to filter sludge and a magnetic substance from a processed fluid containing the magnetic substance; a cylindrical-shaped sludge recovery rotating body facing the rotating filtering body to be horizontally close thereto, the sludge recovery rotating body rotating to place sludge and the magnetic substance on a surface thereof to convey the same; a magnetic rotating body, which has an axis in the sludge recovery rotating body and comprises a rotating body and a plurality of magnets mounted on a circumference of the rotating body, the magnetic rotating body rotating, independently of the sludge recovery rotating body, around its axis, the axis being concentric with respect to the plurality of magnets, at least a side of said magnetic rotating body toward the rotating filtering body being arranged close to an inner peripheral surface of the sludge recovery rotating body, by which the magnetic substance filtered by the rotating filtering body is magnetically attracted to a surface of the sludge recovery rotating body, whereby sludge is transported onto the surface of the sludge recovery rotating body; and a scraping device that scrapes sludge and the magnetic substance being transported on the surface of the sludge recovery rotating body.