Working principle and structure of pneumatic diaphragm pump

Working principle and structure of pneumatic diaphragm pump
The working principle of the pneumatic diaphragm pump is based on compressed air driving the diaphragm to do reciprocating movement in the pump body, so as to achieve the suction and discharge of liquid. The specific process is as follows;
When the compressed air enters the pneumatic part of the pneumatic diaphragm pump, it first pushes a diaphragm to move in the other direction, so that one chamber of the pump produces negative pressure, thus opening the suction valve and drawing the liquid into the pump.
The compressed air then passes through a pneumatic valve in the pneumatic section, driving another diaphragm in the opposite direction. At this time, the diaphragm in the chamber that originally produced negative pressure moves, so that the liquid is discharged out of the pump through the discharge valve under the action of pressure.
With the continuous switching of the pneumatic valve in the pneumatic part, the two diaphragms move alternately to achieve continuous and uninterrupted liquid transportation.
Another feature of the pneumatic diaphragm pump is that the medium only touches the diaphragm and the pump body, and will not touch other components. This characteristic makes it able to transport some flammable and explosive, corrosive or high viscosity media.