| 摘要 |
To ensure that liquid and/or vapours do not escape from a tank space during cleaning by means of cleaning equipment, a housing ( 2 ) is provided with magnetic coupling equipment according to the invention, comprising two cooperating pole elements ( 8,9 ) which extend hermetically isolated from each other with pole parts extending in the turbine housing ( 3 ) on the tank space side and the gear housing ( 1 ) itself outside the tank space, respectively. This provides a considerable degree of security against liquid and gas leakage, while making it possible to achieve a compact structure with easy access for service and maintenance.
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