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Boiler functionality
2 Boiler functionality
1 Agitator plate
2 Clutch
3 Flat springs
4 Discharge screw
5 Rotary valve
6 Stoker screw
7 Combustion chamber
8 Actuator for primary air
9 Actuator for secondary air
10 Downdraught channel
11 Heat exchanger with turbulators
12 Draught fan
13 Ash screw under tilting grate
14 Heat exchanger ash screw
15 Ash box
Spring arms adjust to load
The wood chips are transported to the discharge screw
by the floor agitator. The spring arms adjust
themselves to the load above them. If the storage
room is full, the floor agitator is subjected to a heavy
load and the spring arms are pressed against the
agitator plate, reducing the force needed to turn the
agitator and thus the electricity consumption. As the
storage room empties, the spring arms extend toward
the wall and clear out the bunker.
Floor agitator must turn during filling
To prevent the spring arms from being stuck in an
extended position under the pile of wood chips, the
floor agitator must be turning during filling. Details can
be found in chapter 7 "
Filling the storage room".
Discharge screw torque control
The power consumption of the motors is monitored so
that any sluggishness in the conveyor screws is
registered immediately. This triggers the screws to run
briefly in reverse, up to three times if necessary. The
floor agitator is simultaneously decoupled via the
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