Gyratory crusher having a sealing arrangement

摘要

A gyratory crusher (1) comprises an outer crushing shell (12) and an inner crushing shell (18) forming between them a crushing chamber (23) communicating with a discharge zone (36). The inner crushing shell (18) is supported on a crushing head (16) and the outer crushing shell (12) is supported on a crusher frame (2). The crusher (1) comprises at least one sealing arrangement (37) arranged between the discharge zone (36) and a working part zone (25). The sealing arrangement (37) comprises a sealing surface (40) and a sealing member (38) arranged to seal against the sealing surface (40) and comprising an inner circumferential flexible sealing lip, an outer circumferential flexible sealing lip and at least one inlet for pressurized fluid to be supplied to an overpressure zone arranged between the inner and outer sealing lips and the sealing surface (40).