20
Member of Exel group
DRT7142
B - 2023/06
2.5.11. Blowing out the dense phase powder pump
The powder pump is blown by several air supply sources:
1 Via the KK9 valve, which sends trains of air at network pressure through the porous filters
1 filters of the pump to clean them and evacuate the powder into the ventilation system through the draw pipe.
2 Valves QR 23 and KK 23 send air streams to the pump's chambers A&B (depending on the opening of valves
PV1...PV4).
DES09289
KK23
KK523
KK8
KK7
KK5
KK6
KK9
PV2
CHB
CHA
PV4
PV1
PV3
QR23
QR11
N225
KH24
KKCHA
KKCHB
Powder
tank
Air network
Air flow
Aspiration/blowing
Aspiration/blowing
Evacuation
to ventilation
Powder supply
plunger in its housing
along the
powerstation
Air tank
Vacuum
generator
Regulator
RQ see in cycle if
QR11 is still closed