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The bunker should be designed so that it can be completely emptied.
In practical application of auger delivery systems, long rectangular
rooms have proved their worth in keeping the unusable space as
small as possible.
I
NJECTION AND EXTRACTION
NOZZLES
If possible, the bunker should be arranged with an outer wall on the
narrow side as the injection and extraction nozzles must be
accessible from outside. If the bunker is in an inner-lying room, the
injection and extraction pipes (made of metal) must be extended out
to an external wall.
1 Injection or extraction nozzles
2Ceiling
3Earth cable
4 Outer wall
5 PVC pipe Ø 150 mm (supplied by customer)
6 Coupling nozzle Storz “A” system, Ø 100 mm with cap
A) Spacing to ceiling approx. 20 cm
Both nozzles must be properly earthed (equipotential bonding).
The injection and extraction nozzles are installed on the narrow side,
just underneath the ceiling.
The injection nozzle should be in the middle of the space to ensure
even filling.
The passages through the wall for the nozzles must be watertight.
P
ELLET ANTI-SHATTER
PROTECTIVE MAT
Pellets are blown into the bunker at high pressure. To prevent
damage to the pellets and to the wall, a protective mat must be
installed opposite the injection nozzle. This must be made of a
durable material which will not deteriorate with age, e.g. rubber or
plastic. The minimum clearance between protective mat and wall
must be 30 cm.
Figure 4/3 - Injection and extraction nozzles
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