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Magnetically coupled pumps, or magnetic drive pumps, vary from the traditional pumping style, as the motor is coupled to the pump by magnetic means rather than by a direct mechanical shaft. The pump works via a drive magnet, 'driving' the pump rotor, which is magnetically coupled to the primary shaft driven by the motor. [8]
An electromagnetic pump is a pump that moves liquid metal, molten salt, brine, or other electrically conductive liquid using electromagnetism. A magnetic field is set at right angles to the direction the liquid moves in, and a current is passed through it. This causes an electromagnetic force that moves the liquid.
HMD Pumps (A Sundyne subsidiary) invented the magnetic drive pump in 1947. The Sundyne sealless magnetic drive pumps are leak-free and ideal for difficult, high-value, and hazardous fluid processing where containment, reliability, and safety are imperative. Sundyne Ansimag sealless magnetic drive pumps are non-metallic and fit ANSI standards.
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
The inductive pump piston is driven directly by the magnetic field formed within the body structure about the bore and within the piston. There are minimal friction losses between the piston and bore due to a circumferential magnetic field that pulls the piston equally in all directions towards the wall of the bore.
Some aquariums use magnetic drive pumps, which have a magnetic coupling between the motor on the dry side of an aquarium wall and the propeller or impeller in the water on the other side of the wall. [4] This coupling features two face-to-face magnetized disks: the driving magnet on the dry side, and the driven magnet on the underwater side.
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