Itt Manufacturing Enterprises, Inc.

Johan Bratthall

Borje Stahl

Lars Ogren

The invention concerns a seal device for a submersible machine, such as a pump or a mixer. The seal device is designed as an easily replaceable unit comprising two mechanical face seals ( ) and ( ) resp. with an intermediate room for a barrier liquid in which a pump for circulation of said liquid is arranged. A spring housing ( ) which serves as a uniting means for the seal device is provided with connecting means for the rotary seal rings ( ) and ( ) resp. and acts as a hub for impeller vanes ( ) in said circulation pump.

Seal arrangement

The invention concerns a device for mutual locking of two concentric cylindrical parts such as parts to be used in a submersible pump unit. One outer part ( ) and two inner parts ( ) and ( ) are locked mutually by help of a circumferential locking element ( ) having resilient abilities and which is arranged at the intersectional point between the three parts ( ), ( ) and ( ).

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Saltsjo-Boo, Sweden

Johan Bratthall