1.High Head: Through the series connection of multiple impellers, D-type multi-stage centrifugal pumps can lift the liquid to a relatively high height, meeting the requirements of working conditions with high head needs.

2.Stable Flow Rate: The design of multiple impellers enables the liquid to flow more smoothly inside the pump, resulting in a relatively stable output flow rate with small fluctuations.

3.Compact Structure: The overall structure is relatively compact, occupying a small floor area. This makes it convenient for installation and maintenance, and it is suitable for use in places with limited space.

4.High Efficiency: Under the designed working conditions, multi-stage centrifugal pumps can maintain a high efficiency, effectively converting the mechanical energy of the motor into the pressure energy and kinetic energy of the liquid, reducing energy consumption.

5.Wide Application Range: It can transport a variety of media, including clean water, slightly polluted sewage, and liquids with certain corrosiveness. It has a wide application range and can be applied in many fields such as mines, metallurgy, chemical industry, and urban water supply and drainage.

Working Principle of D-type Multi-stage Centrifugal Pumps

The motor drives the pump shaft to rotate, which in turn drives the impeller to rotate at a high speed. The blades in the impeller push the liquid to rotate together, enabling the liquid to obtain centrifugal force. Under the action of the centrifugal force, the liquid is thrown from the center of the impeller to the outer edge of the impeller. During this process, the speed and pressure of the liquid are increased, and then the liquid enters the pump casing. In the pump casing, due to the gradual expansion of the flow channel, the flow rate of the liquid gradually decreases, and part of the kinetic energy is converted into pressure energy, and finally, the liquid is discharged from the outlet of the pump. At the same time, a low-pressure area is formed at the center of the impeller because the liquid is thrown out. Under the action of atmospheric pressure, the liquid in the suction tank enters the center of the impeller through the suction pipeline. This cycle repeats continuously, realizing the continuous transportation of the liquid. In a multi-stage centrifugal pump, the liquid passes through multiple impellers in sequence. Each time it passes through an impeller, the pressure and energy of the liquid are increased once, thus achieving high-head transportation.