Immersible aerator and/or mixer apparatus
AssigneeOutokumpu Oy
InventorsErkki J. Jarvinen, Pekka M. Taskinen, Jarmo J. Pullo, Seppo T. Kinnunen, Arvo E. Andersson
Life of this patent
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Abstract
The invention relates to an immersible aerator and/or mixer apparatus to be lowered onto the bottom of a basin or tank containing liquid, often also solid substances, and particularly the invention relates to the supporting structures of the said apparatus as well as to the devices for protecting the motor and power transmission chambers of the said aerator and/or mixer apparatus from the liquid contained in the said vessel.
Claims9
An immersible apparatus for agitating liquid, comprising an operation unit and an agitator unit, said operation unit having an outer casing, inlet means for supplying gas under pressure to the outer casing, a motor enclosure disposed within the outer casing in spaced relationship with respect thereto, a motor disposed within the motor enclosure and operatively connected to the agitator unit, and outlet duct means for conducting gas from the space between the outer casing and the motor enclosure to leave the apparatus by way of the agitator unit, said inlet means including a non-return valve for preventing gas from leaving the outer casing by way of the inlet means, said valve, said outer casing and said motor enclosure together defining a gas trap which, in the event of interruption in the supply of gas to the outer casing, prevents liquid that enters the operation unit by way of the agitator unit from contacting the motor.
Dependencies are inferred from the claim text.