Sealing system for coupling a container to the underside of a melting furnace

摘要

A sealing system for coupling a container (24) to the underside of a melting pot containing a molten material. The system includes a shell (30) surrounding a nozzle (40) aligned with the axis of the container neck for pouring the material from the melting pot into the container. The shell (30) includes a coupling seal for coupling it to the nozzle (40), a base (32) with a bearing surface for engaging a corresponding bearing surface on the container neck, and at least one bellows (33, 34) surrounding the nozzle and connecting the coupling seal to said nozzle. The bellows enables the shell to be retracted axially relative to the nozzle, and means are provided for delivering a gas flow between said bearing surfaces to enable a part of said flow to be fed towards the nozzle.