What is the working principle of the high pressure diaphragm pump? How does it achieve liquid transportation through the reciprocating motion of the diaphragm?

The working principle of the High pressure diaphragm pump is simple and reliable, mainly using the diaphragm to transport the working medium. The following is a detailed explanation of the working principle of the High pressure diaphragm pump and how it achieves liquid transportation through the reciprocating motion of the diaphragm:

1. Working principle

The High pressure diaphragm pump consists of components such as a drive device, a pump body, a diaphragm and a valve. When the drive device (such as an electric motor or a pneumatic motor) is started, the motion is converted into the reciprocating motion of the diaphragm through the connecting rod transmission.

2. Liquid transportation process

Suction stage: When the diaphragm moves to the right (or backward), it forms a negative pressure area in the pump body, that is, the negative pressure of chamber A. At this time, the inlet valve opens, and the working medium (such as liquid) is sucked into chamber A through the inlet valve. At the same time, when the diaphragm moves to the left (or forward), chamber B forms a positive pressure, but because the outlet valve is closed at this time, the working medium will not flow out.

Discharge phase: When the diaphragm moves to the left (or forward), the pressure in chamber A increases, forming a positive pressure, and the inlet valve closes to prevent the liquid from flowing back. At the same time, the pressure in chamber B decreases, but since the outlet valve is open at this time, the working medium is discharged into the outlet pipe. Subsequently, when the diaphragm moves to the right (or backward) again, chamber B forms a negative pressure, ready to suck the working medium again, while chamber A forms a positive pressure, pressing the working medium into the outlet pipe.

Reciprocating motion: By continuously repeating the above-mentioned suction and discharge processes, the diaphragm reciprocates in the pump body, thereby continuously transporting the working medium from the inlet to the outlet.

3. The role of the diaphragm

The diaphragm is the core component of the High pressure diaphragm pump. It is located in the pump body and divides the pump into two isolated chambers. During the reciprocating motion, the diaphragm changes the volume of the two chambers, thereby realizing the suction and discharge of the liquid. At the same time, the material selection of the diaphragm is also very important, and it needs to be determined according to the characteristics of the working medium to ensure the normal operation and service life of the pump.

High pressure diaphragm pump realizes liquid delivery through the reciprocating motion of the diaphragm. This working principle enables High pressure diaphragm pump to withstand high pressure, and has the advantages of simple structure, convenient operation, strong corrosion resistance, etc. It has been widely used in chemical, petroleum, food, medicine and other industries.