6.13 Fuel discharge by means of funnel discharge
Funnel discharge
Material discharge for round silos is carried out with an agitator inte-
grated in the discharge casing. In its centre, the discharge screw con-
veyor is driven via a solid universal joint. When the silo is full, the screw
conveyor moves into a vertical position. The funnel limits the angle of
the screw conveyor when the silo is empty. Drive is via a spur geared
screw conveyor motor to the agitator. In the case of material compres-
sion in the discharge casing, as a result of increased drive power con-
sumption, the supply direction of the screw conveyor is changed auto-
matically for a period set at the factory. This releases the compression,
preventing a fault.
Standard delivery:
■ Funnel discharge as per order data with drive unit 3 x 400 V
■ Automatic control of the drive for the spur geared screw conveyor
motor for both rotational directions
■ Safety limit switch installed on inspection cover of discharge casing
Version and drives
Funnel discharge AP-11 AP-12
Part no. 7837 794 7837 958
Diameter discharge circuit max. m 6.0 7.5
Boiler outputs with
Pellets S 650 kW 3000 2500
Woodchips from forest S 200 kW 1250 2500
Shavings S 130 kW 1250 2500
Torque at screw conveyor Nm ~1500 ~3000
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