Lining device for a centrifugal pump designed for handling suspensions

Abstract

The invention relates to a lining device (1) for a centrifugal pump (2) intended for processing suspensions and comprising an impeller and a drive shaft (6) connected to the rear portion of the impeller (3). The lining device comprises a rear lining (10) arranged around at least the rear portion of the impeller and around the drive shaft, and a complementary lining (20) arranged on the drive shaft and on the central rear portion (5) of the impeller (3). The rear lining comprises an inclined portion (11) having an inclined surface (12) of the rear lining, and the complementary lining (20) has an inclined surface (22). The inclined surface (12) of the rear lining is located opposite the inclined surface (22) of the complementary lining. The lining device (1) is configured to form a channel (30) between the inclined surface (12) of the rear lining and the inclined surface (22) of the complementary lining. The invention also relates to a centrifugal pump (2) for processing suspensions, containing this sealing device.