Magnetic Coupled Pumps
Magnetic Coupled Pumps
Magnetic Coupled Pumps. A magnetic coupling can be used to transfer power to centrifugal pumps. It consists of a primary part which is rigidly connected to the motor shaft, and a secondary part which is arranged on a shaft together with the impeller.
The magnetic coupling is based on a completely different sealing principle. Here the drive for the hydraulic part of the pump takes place through the pairing of permanent magnets whose external unit transmits the torque generated by the motor to an internal unit, which in turn transfers this to the impeller.
The external or atmosphere side magnet system is separated from the internal product side magnetic system by a spacer can made of non-magnetic material. The torque needed to drive the impeller is transmitted exclusively by magnetic forces which act through the spacer can. The pump it is thus hermetically sealed.
The axial and radial mountings for the pump shaft are through hydro-dynamic sleeve bearings made of silicon-free silicon carbide. Bearing lubrication and heat removal normally takes place through the pumped medium, in two separate circuits.
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The magnetic drive for vertical pumps is different from the horizontal drive in that the drive is not situated in the fluid area, but only seals the gas phase in the container. Here the pump shaft is mounted in grease lubricated anti-friction bearings. Since non-metallic spacer cans are used exclusively there are no eddy current losses, so heat extraction is not necessary.
Both the primary and the secondary parts are fitted with permanent magnets. Poles of opposite polarity face each other. They attract each other due to the magnetic flux. When the primary part is driven, the secondary part rotates synchronously (at the same rotational speed).
PTMS has one of the widest range of pumps, which comes with many unique built-in protections to overcome above challenge. We understand water better, so we handle it better, water of various types & qualities.