Structural work of magnetic seals
- Jul 18, 2018 -

As with the ordinary spring-loaded end-face sealing device, the main structure of the magnetic end-face seal is also composed of dynamic ring, static ring and two times seal ring, the dynamic ring and the static ring contact each other to form the friction pair, bear the high speed friction, realize the seal between the rotor structure and the static

The 1 of the movable ring and static ring can be axially moved, which automatically compensates for the wear of the sealing surface and ensures good following behavior in the work. Unlike the ordinary spring-loaded end-face sealing device, the magnetic end-face sealing device cancels the spring element, and the close fitting of the movable ring and the static ring is achieved by its magnetic attraction. The static ring is a permanent magnet material, and the movable ring is composed of a carbon graphite ring inlay person soft magnetic material ring. The static ring (magnetic material) and the dynamic ring (soft magnetic material) rely on magnetic attraction to ensure that the graphite ring and the movable ring close together, to prevent the work fluid leakage.

The movable ring and the shaft are relatively movable seals, and can be axially and angular floated to compensate the wear of the sealing surface automatically. Ordinary spring-loaded end-face seals need special transmission parts, so that the dynamic ring and the shaft synchronous rotation.

The magnetic end face Seal can cancel the special transmission parts, and rely on the friction of two times sealing ring to play the driving function.


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