Ss Magnetic Drive Pump By Mechanical Seal Engineering

In a magnetic drive centrifugal pump, the impeller and the pumped fluid are contained within a hermetically sealed housing. The drive shaft from the motor rotates an assembly of magnets on the outside of the housing. Opposing this, on the inside of the housing, is a matching ring of magnets on a shaft attached to the impeller (Figure 2). Torque is transferred through the housing as a result of the coupled magnets.

There are also magnetic drive positive displacement pumps, vane pumps, internal gear pumps, and external gear pumps and the basic principles and advantages are the same: the pumped fluid is contained within a sealed housing eliminating the risk of leakage. For the purposes of this article, we shall continue to describe magnetic drives in the context of centrifugal pump design.