Patent ID: 9093891
Filing Date: 2015-07-28
Classification: G21C,H02K,Y02E

Abstract:
1. A drive device for a sealed transmission of a helium space having a chamber body, comprising: a motive member; an executing member; a transmission member, the transmission member comprising a magnetic shaft coupling which comprises a pressure-bearing casing, a driving magnetic component located outside the pressure-bearing casing and a driven magnetic component located inside the pressure-bearing casing, the pressure-bearing casing connecting and supporting the driving magnetic component and the driven magnetic component respectively by a first bearing pair and a second bearing pair, and the pressure-bearing casing connected to the chamber body of the helium space; a heat dissipation structure outside a cylindrical shell of the pressure-bearing casing; and a dustproof plate located inside the cylindrical shell of the pressure-bearing casing, and a metal dust screen located on a driven shaft.