SEALING AND COOLING DEVICE

摘要

The invention concerns a sealing- and cooling system for a submersible machine, such as a pump or a mixer. The device comprises an easily replaceable (4) containing mechanical face seals with an intermediate room for a barrier liquid where a circulation pump (10) is arranged for circulation of said liquid along the seals as well as around th e driving unit (1) of the machine. During circulation, the liquid passes a first narro w gap (6) around the driving unit where heat is absorbed and a second narrow gap (7) where heat is discharged.