A magnet pump includes a synthetic resin casing, divided into a front casing and a rear casing and configured to internally form an impeller housing chamber and a magnet can housing chamber contiguous thereto,Magnetic pumps having an inlet and an outlet for a target fluid to be transferred. The casing forms an eddy chamber at a position for dividing the front casing and the rear casing along the outer rim of the impeller housing chamber to surround the outer rim of the impeller. Sweage pumps &Sludge pumpsThe eddy chamber has overhangs formed at an entry of the eddy chamber hanging over from both sides in the rotational-axis direction of the impeller.  A magnet pump, comprising: a synthetic resin casing divided into a front casing and a rear casing and configured to internally form a first housing chamber, a second housing chamber contiguous thereto, having an inlet and an outlet formed at said first housing chamber for a target fluid to be transferred; a substantially cylindrical magnet can with a follower magnet mounted on an outer rim thereof, housed in said second housing chamber; a support means for rotatably supporting said magnet can relative to said synthetic resin casing; a disk-like impeller fixed at the front end of said magnet can so as to rotate integrally with said magnet can, having a flow path formed inside to suck said target fluid from the center, transfer said target fluid outward in the radial direction, and discharge said target fluid from an outer rim thereof, and housed in said first housing chamber; and a rotational driving means magnetically coupled to said follower magnet through said rear casing for applying a rotational driving force to said impeller through said follower magnet, wherein said synthetic resin casing has as eddy chamber formed at a position for dividing said front casing and said rear casing to surround the outer rim of said impeller, said eddy chamber having overhangs formed at an entry thereof hanging over from both sides in the rotational-axis direction of said impeller, and wherein a cooling hole is formed at a coupling portion between said magnet can and said impeller to flow said target fluid outward from the axial center thereof in the radial direction.

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2011-12-29

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