4.1
OPERATION DESCRIPTION
Based on a simple manufacture, the operation consists in two diaphragm movement, which are both
fixed at the end of a rod, pressurizing and sending the paint.
The compressed air enters the air chamber from side A in picture 1. The diaphragm is moved to the
left, by pushing the paint.
At the same time, the diaphragm on the opposite end (side B) moves to the left by sucking the paint.
When the rod is completely on the left, the double pneumatic valve reverses the operations.
The compressed air enters the air chamber from side B in picture 2. The diaphragm is moved to the
right, by pushing the paint.
At the same time, the diaphragm on side A end sucks the paint.
The pump repeats the above-mentioned suction and delivery movements. The result is a steady and
pulsation-free material flow.
The main feature is the action of two pneumatic valves: the first one is a power valve feeding the
pump, and the other one a control valve always ensuring the movement.
20
4. PUMP OPERATION
FIG.1
FIG.2
A
A
B
Material outlet
Material outlet
Material suction
Material suction
Air inlet
Air outlet
Air inlet
Air outlet
B
