Alfa Laval Corporate Ab

Anders Ekström

Peter Thorwid

Jouko Juhani Pitkämäki

Klas Hilding

A seal assembly for providing a seal between a first zone and a second zone includes a rotatable sealing member including a first sealing ring, a stationary sealing member including a second sealing ring and a device for bringing the first and second sealing rings into engagement with each other. The first and second sealing rings are arranged so that a double contact seal having at least one chamber arranged at a radial plane is formed upon engagement between the first and second sealing rings. The seal assembly further includes at least one fluid connection to the chamber. A centrifugal separator includes such a seal assembly.

Seal assembly for a centrifugal separator

A centrifugal separator for separation of at least two components of a fluid mixture which are of different densities. The centrifugal separator includes a rotor rotatable about an axis of rotation and including a rotor wall which surrounds an inner space with a separating chamber within the rotor. The rotor wall is divided into an upper bowl hood, with an end portion, and a lower bowl body which are dismountably attached to each other. The centrifugal separator further includes an inlet for feeding the fluid mixture into the rotor's separating chamber, at least one outlet for discharging out from the rotor component separated from the fluid mixture, and a rotor shaft attached to the rotor and drivably connected to a motor for rotation of the rotor about the axis of rotation. The bowl hood and the bowl body are dismountably attached to each other by an annular flange portion of the bowl hood resting on a stop flange of the bowl body. The rotor includes a pressure media supply port for supplying pressure media to a space between the annular flange portion, having a lower free end surface, and the stop flange when dismounting the bowl hood from the bowl body where the pressure media is acting on the lower free end surface for displacing the bowl hood upwards out of the attachment from the stop flange.

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Täby, Sweden

Anders Ekström