Working principle of the pneumatic diaphragm pump

Pneumatic diaphragm pump is powered by compressed air and designed according to 1:1 pressure ratio. Pneumatic diaphragm pump has two chambers and two working chambers, diaphragm respectively installed between the two chambers and the working chamber, each other is connected through the intermediate shaft.

When ventilated to the diaphragm pump, the air first enters an air chamber, at this time, the diaphragm suddenly expands outward, the working chamber space in this case becomes smaller, and do the press motion, the liquid is discharged out of the working chamber.

At the same time, the diaphragm on the other side shrinks due to the tension of the intermediate shaft, and the working chamber space on the other side becomes larger instantly.

It creates suction, which draws the liquid into the working chamber. After the continuous ventilation and exhaust of the inlet valve and the outlet valve, the diaphragm pump has been doing reciprocating motion, so as to achieve the role of pumping liquid.

The conversion of air is achieved by the piston inside the inlet valve, the piston moves to one end, the air is discharged to one end, the movement to the other end, the air is discharged to the other end, it does the non-stop action, so as to achieve the purpose of air exchange, with the valve ball and ball seat inside, to complete the one-way flow of liquid together.

Features of aluminum alloy pneumatic diaphragm pump: 

1. The aluminum alloy pneumatic diaphragm pump does not need to be filled with water, the suction lift is up to 7m, the head is up to 50m, and the outlet pressure is ≥6kgf/c㎡. The flow is wide, and the passing performance is good. It allows the QBY pneumatic diaphragm pump to pump the flowing liquid and also transport some difficult-to-flow media. It has self-priming pumps, submersible pumps, canned pumps, mud pumps and impurity pumps. Many advantages.
   
   
2. The aluminum alloy pneumatic diaphragm pump has no rotating parts and no shaft seal diaphragm to completely separate the pumped medium from the moving parts of the pump, and the working medium will not leak out. Therefore, when pumping toxic, volatile or corrosive media, it will not cause environmental pollution and endanger personal safety. 
   
   
3. Large particles with a diameter of 10mm will cause little wear on the pump when pumping mud and impurities.
   
   
4. The head and flow can be adjusted steplessly through the valve opening. (The air pressure is adjusted between 1-7kg/c㎡). 
   
   
5. The aluminum alloy pneumatic diaphragm pump has simple structure and few wearing parts. The pump has simple structure, easy installation and maintenance. The medium conveyed by the pump will not touch the moving parts such as the valve, linkage, etc., unlike other types of pumps. The wear of rotors, pistons, gears, blades and other components gradually decreases performance. 
   
   
6. Aluminum alloy pneumatic diaphragm pump does not need electricity, it is safe and reliable to use in flammable and explosive places. 
   
   
7. It can be immersed in the medium to work. 
   
   
8. The aluminum alloy pneumatic diaphragm pump does not need to be lubricated with oil, even if it is idling, it will not have any effect on the pump. This is a major feature of the pump.
   
   
9. The aluminum alloy pneumatic diaphragm pump is easy to use, reliable in work, and it only needs to simply open and close the gas valve to start and stop the pump. Even if it runs without medium for a long time or suddenly stops due to unexpected circumstances, the pump will not be damaged. Overload, the pump will automatically stop, with self-protection performance, when the load returns to normal, it can automatically start operation.