Patent ID: 8636907

Claim:
A magnetic filter for separating magnetic and non-magnetic contaminants from a contaminated liquid process stream that comprises: a housing having (i) an upper opening that is sealed with a detachable cover plate (ii) a process stream inlet (iii) a process stream outlet (iv) an interior region between the inlet and outlet and (v) a lower end, wherein the cover plate supports a plurality of vertically oriented, elongated non-magnetic holder sleeves with each holder sleeve being configured to accommodate one or more magnets that are disposed therein; and a screen cylinder that is positioned in the interior region wherein the screen cylinder has (i) a rim defining an opening through which the plurality of holder sleeves are disposed and (ii) a filter screen that encloses lower portions of the plurality of holder sleeves wherein the filter screen is configured to capture contaminants thereon wherein the rim and cover plate define a flow channel that directs the contaminated liquid process stream from the inlet through the opening of the rim, pass the holder sleeves so that magnetic contaminants adhere to the exterior of the holder sleeves and through the filter screen where non-magnetic contaminants of the desired size are removed to form a treated process stream that leaves via the outlet and wherein the one or more magnets that are disposed in each holder sleeve can be removed, from the holder sleeve without having to open the cover plate and exposing, the interior region to the environment.