The Working Principle of the Micro Diaphragm Pump

The micro diaphragm pump refers to the micro vacuum pump, which has one suction nozzle and one exhaust nozzle with one inlet and one outlet. The diaphragm inside the pump is made to reciprocate through a mechanical device, and it can continuously form a vacuum or negative at the inlet. Pressure, a slight positive pressure is formed at the exhaust nozzle; the working medium is mainly gas, a compact instrument. Micro diaphragm pumps have two working methods. Sailingflo pump will introduce you to the working principle of micro diaphragm pumps.

The first working mode is the circular motion of the motor. The diaphragm inside the pump is reciprocated through a mechanical device, thereby compressing and stretching the air in the pump cavity to form a negative pressure, and a pressure difference is generated between the suction port and the outside atmospheric pressure. Under the action of the pressure difference, the gas is sucked into the pump cavity and then discharged from the exhaust port.

The second working mode is that the micro diaphragm pump uses the rotation of the screw to suck and discharge the liquid. The middle screw of the micro diaphragm pump is the driving screw, which is driven by the prime mover to rotate, and the screws on both sides are the driven screws, which rotate in the opposite direction with the driving screw. The threads of the main and driven screws are both double-ended threads. Due to the mutual engagement of the screws and the close fit between the screw and the inner wall of the liner, the suction port and the discharge port of the micro diaphragm pump will be partitioned into one or more sealed spaces. 

With the rotation and engagement of the screw, these sealed spaces are continuously formed at the suction end of the pump, which seals the liquid in the suction chamber, and continuously moves from the suction chamber along the screw axis to the discharge end, closing the space in each space. The liquid is continuously discharged, as if a nut is continuously pushed forward when the screw is rotated. This is the basic working principle of the micro diaphragm pump.

After a clear understanding of the working principle of the micro diaphragm pump, we can better choose the diaphragm pump. Miniature diaphragm pump has low noise, corrosion resistance, high pressure, self-priming height of 5m, medium temperature up to 60℃, dry operation is allowed, built-in pressure switch to protect the pump from damage during operation, built-in overflow valve to control the normal operation of the pump , Easy to disassemble and assemble, use safe low voltage to ensure personal safety.

It can be used for household tap water pressurization, car washing, and ship water desalination. It is suitable for use in reverse osmosis pure water machines, water treatment equipment, filters, spray devices, chemical metering and liquid addition, sanitation, environmental protection, printing and other industries.