MIXER SYSTEMS

摘要

A mixer system for aggressive materials which are mixed in a vessel (12) with an impeller (14) connected to a drive shaft (16) mounted to an assembly (18) which covers the opening of the tank and seals the outside environment from the interior of the vessel by a magnetic coupling (26). The drive shaft (16) is mounted within a bearing assembly (20, 22) made up of silicon nitride coated balls (76) and coated races (78, 80, 82, 84) selected from the group of chromium zirconium/zirconium nitride on the exposed surfaces of the race.