Alfa Laval TE20B200, Instruction Manual

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Instruction Manuall Toftejorg SaniJet 20 Electrically Driven Page 9
IM-TE91A794-EN6
General Description
(continued)
Machine with External Motor Drive
The machine is driven by a gear motor mounted on top of the Inlet housing. Via a Magnetic clutch the
rotation of the gear motor is transmitted from the outside through a closed wall to the Output shaft
placed inside the Inlet housing. The Output shaft is in mesh with the Down pipe and rotates the Down
pipe in the same way as in the media driven version.
The output shaft of the gear motor is equipped with a Rotor with permanent magnets. The rotor is
placed inside the cavity in the Motor flange, made by the cup protruding into the liquid chamber in the
Inlet housing. The cup is welded to the motor flange as a hermetic sealed closed wall between the
liquid chamber and the outside. The magnetic field from the permanent magnets is transferred through
the wall, to a ring with permanent magnets inside the Output shaft, which is placed around the cup on
the inside the liquid chamber.
Gear motor
Cup-shaped closed wall
Output shaft
Motor flange
Rotor w. magnets
Cup-shaped closed wall
Ring w. magnets inside Output
shaft