Slurry magnetic filter apparatus and cleaning method thereof

A slurry magnetic filter apparatus for allowing a fluidic slurry to flow and pass therethrough and for adsorbing magnetic impurity contained in the fluidic slurry, comprising a magnetic adsorption device which comprises a plurality of magnetic adsorption barrels, the magnetic adsorption barrels each comprising a barrel body, a magnetic roller, and a scrape ring, the magnetic roller being arranged in an interior of the barrel body, the magnetic roller being reciprocally slidable relative to the scrape ring that is fit outside of the magnetic roller;

• wherein the slurry magnetic filter apparatus further comprises:
• a parallel-connection flow collection device and an impurity clearing device, the parallel-connection flow collection device comprising:
• an in-feed flow collection member, a transit flow collection member, and an out-feed flow collection member;
• wherein the plurality of magnetic adsorption barrels are grouped as:
• an in-feed barrel set, a transit barrel set, and an out-feed barrel set, the in-feed barrel set being respectively in communication with the in-feed flow collection member and the transit flow collection member, the transit barrel set being in communication with the transit flow collection member, the out-feed barrel set being respectively in communication with the transit flow collection member and the out-feed flow collection member, so that the fluidic slurry flows in sequence through the in-feed flow collection member, the in-feed barrel set, the transit flow collection member, the transit barrel set, the out-feed barrel set, and the out-feed flow collection member;
• wherein the magnetic roller comprises:
• a roller body, a permanent magnet, a directing end-wing, and a permanent magnet driving and moving mechanism, the roller body being reciprocally slidable relative to the scrape ring that is fit outside of the magnetic roller, the permanent magnet being arranged in an interior of the roller body, the directing end-wing being connected to a free end of the roller body, the permanent magnet driving and moving mechanism being connected to the permanent magnet and operable to drive the permanent magnet to move in a direction approaching or away from the directing end-wing;
• and
• wherein the impurity clearing device is in communication with the transit flow collection member;
• wherein the in-feed barrel set comprises a multiplicity of parallel-connected ones of the magnetic adsorption barrels;
• and
• wherein the in-feed flow collection member comprises an in-feed valve, an in-feed curved tube, an in-feed flow collection cone, and an in-feed closure board, the in-feed curved tube being respectively in communication with the in-feed valve and the in-feed flow collection cone, the in-feed closure board covering and closing the in-feed flow collection cone, each of the magnetic adsorption barrels of the in-feed barrel set being connected, at an end thereof, to the in-feed closure board, so that the end of each of the magnetic adsorption barrels of the in-feed barrel set is in communication with the in-feed flow collection cone.