A positive displacement inductive pump which includes a pair of steel cylinders or sleeves having a non-magnetic corrosion resistant inner surface and non-magnetic alloy rings disposed at each cylinder end.Magnetic pumps Three ferromagnetic pole pieces having an axial opening are provided with each cylinder disposed between a respective pair of the pole pieces and connected to the pole pieces with the alloy rings. A pair of oppositely disposed steel plates connected to the pole pieces forms a magnetically conductive circuit between the pole pieces. A piston positioned within the bore defining a displacement chamber adjacent to each end of the bore.Self-priming pumps The piston includes a rod formed of magnetic material with a corrosion resistant lining encapsulating the rod. The pistons outer lining surface forms a seal with the material on the inner surface of the cylinders. Respective inductive coils are wound around each cylinder and are alternatingly energized to produce magnetic fields which cause the piston to move to oppositely located ends of the bore. Respective check valve assemblies are attached to each outer pole piece at the ends of the bore. The check valve assemblies allow for the ingress and egress of material into and out of the associated adjacent displacement chamber dependent upon the directional movement of the piston.

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2011-11-29

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