Slide ring seal between pump impeller wheel and housing

摘要

The slide ring seal (10) seals the hole (16) through the pump housing (12) and through which passes the drive shaft (18) for the impeller wheel (14). An elastic corrugated piece (20) has an opening in its wall for a slide ring (30) holding the drive shaft and resting against a sealing surface of the impeller wheel. A sprung element (32) pressing the slide ring against the impeller wheel's sealing surface is in the form of a toothed or non-toothed plate spring (40) whose outer edge (43a) touches the support surface (46) of the pump housing, or touches a separate support ring. The wall (28) of the corrugated piece supporting the slide ring is at least approximately on the same plane as the pump housing holding the corrugated piece.