What is a diaphragm pump?
Pneumatic double-diaphragm pump, also known as AODD pump, membrane pump, pneumatic diaphragm pump is a kind of volumetric pump with compressed air as the power source. Compressed air is transferred from one chamber to another via a connecting shaft, causing the chambers to move simultaneously. This reciprocating motion forces the liquid to enter the exhaust pipe from one chamber, while the other chamber is filled with liquid.
Diaphragm pumps fall under the category of "positive displacement" pumps because the flow rate of the diaphragm pump does not change too much with the "head" (or pressure) of the pump flow rate. Diaphragm pumps can transport low, medium and high viscosity liquids, as well as liquids with large solids content. They can also handle many corrosive chemicals such as acids, as they can be constructed with a variety of valve body materials and diaphragms.
How does a diaphragm pump work?
The air double-diaphragm pump uses two flexible diaphragms to reciprocate to form a temporary chamber through which fluid is sucked in and out. The diaphragm acts as a wall of separation between air and fluid. The specific working principle is as follows:
The first trip
It is through the central part where the air valve is located, and the two diaphragm membranes are connected by a shaft. The air valve is used to direct the compressed air behind diaphragm No. 1 away from the central section. The first diaphragm creates a pressure stroke that removes fluid from the pump. Meanwhile, the diaphragm no. 2 is inhaling. The air behind diaphragm 2 is pushed into the atmosphere, causing atmospheric pressure to push the fluid to the suction side. The suction ball valve is pushed off the seat, allowing the fluid to enter the liquid chamber through the ball valve.
When you have to start working with any pump control system, whether the pump be a HVAC pump or a VFD pump in NYC, it’s very important to know the basics first.
You must follow some steps to check the rotation of pump.
