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Features of air operated double diaphragm pump
1. Principle
The pneumatic double diaphragm pump uses compressed air, nitrogen or natural gas as power. The main directional (pneumatic) control valve distributes compressed air to the gas chamber, applying uniform pressure on the inner surface of the diaphragm. At the same time, the discharged gas is discharged from the back of the other side of the pump through the guide port of the gas valve assembly. The pneumatic double diaphragm pump pulls the suction diaphragm through the stroke mechanism. The inner plate of the pneumatic double diaphragm pump comes into contact with the aligned driving plunger to move the guide valve core. After the pilot valve is activated, it sends a pressure signal to the other end of the main directional air valve, and the pneumatic double diaphragm pump changes the direction of the compressed air to the other side of the internal chamber. This repeated movement completes the continuous delivery of the medium.
2. Features of pneumatic double diaphragm pump
The characteristics of pneumatic double diaphragm pumps are similar to those of single diaphragm pumps, except that double diaphragm pumps refer to double suction chambers, and single diaphragm pumps have one suction chamber. However, the diaphragm pump pressure cannot be increased and is limited by the air source pressure. Diaphragm pump flow is usually not too large, most of which are used in small systems. It is different from traditional centrifugal pumps used in large flow.
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