Pump impeller and coupling magnet structures

摘要: Cylindrical impeller-coupling magnets of the ceramic type in magnetically-coupled centrifugal pumps according to disclosure are encircled by guard banding aid retaining cylindrical configuration cases cracking and fissuring magnet body occasioned exposure superheated liquids impeller chamber. Supplements subject: may be characterized as (1) non-metallic or metallic non-magnetic; (2) multiple narrow bands a single wide embracing aspect its entirety; (3) cup-shaped jacket with bottom portion additionally shielding one axial end magnet; (4) totally-enclosing encasement; (5) thin cross section lie upon surface (6) moderately thick ring-like stock seating recessing grooves surface; (7) all forms constrained against projection more than slightly into magnetic air gap.