V 03/13
OptiSpray DPP01 Function description • 9
Diffusers
The powder guns must be equipped with a corresponding diffuser. The
diffuser is grounded by transport hoses with conductive strips!
OptiSpray DPP01 Dense phase pump - function-
ing
Suction procedure
In powder chamber 1, a vacuum (negative pressure) is produced. This
vacuum aspirates the coating powder in the powder chamber. A fine-
porous filter element (1) in the powder chamber separates the powder.
The powder chamber is closed at the output side by a pinch valve (2).
Conveying procedure
The pinch valve (3) on the input side of the powder chamber 2 is closed,
the pinch valve (4) on the output side is opened. The coating powder is
pressed out of the powder chamber by overpressure, which is created
with compressed air by the fine-porous filter element, and continued to
convey.
The suction and the conveying procedure alternate between both powder
chambers.
OptiSpray DPP01 Dense phase pump - functioning
Powder quantity control
The OptiSpray DPP01 Dense phase pump operates always with the
same frequency. The powder quantity is controlled by the opening time of
the pinch valves on the inlet of the dense phase pump. The longer the
pinch valves on the inlet of the dense phase pump remain open during
the suction procedure, the more powder will be aspirated into the powder
chamber and then will be transported in conveying direction.
Powder chamber 1
1
2
3
Suction
procedure
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