Single-stage single-suction centrifugal pump is a common type of centrifugal pump, and its working principle is as follows:
1.Pump body: The main component of a centrifugal pump is the pump body, which is usually composed of an inlet, outlet, impeller, pump shaft and bearing.
2.Impeller: The impeller of a centrifugal pump is usually composed of multiple curved blades, and when the pump turns, the impeller also rotates, sucking the liquid from the inlet through centrifugal force, and then pushing the liquid towards the outlet.
3.Pump shaft and bearing: The pump shaft is the part that connects the impeller and the motor, and it needs to withstand the weight of the impeller and the pressure of the liquid under the condition of high-speed rotation. In order to ensure the stability of the pump shaft, bearings are often used to support the pump shaft.
4.Inlet and outlet: The inlet and outlet of centrifugal pumps are used to suck in and discharge liquids, respectively. Filters or grids are often required at the inlet to prevent large particulate matter from entering the pump body, resulting in clogging or damage to the pump.
When the motor starts, the pump shaft and impeller begin to rotate, and the liquid is then drawn into the pump body and pushed to the outlet by the impeller. Due to the very high rotation speed of the impeller, the liquid will also rotate at high speed and be subjected to centrifugal force, resulting in a certain pressure difference that pushes the liquid from the inlet to the outlet. When the liquid is discharged, the pressure inside the pump body decreases, allowing the liquid to continue to be drawn into the pump body, creating a continuous flow of liquid.