Vortex pump also known as vortex pump, is a vane pump. Mainly by the impeller, pump and pump into. The impeller is a disk, and the leaves on the circumference are arranged radially. An annular flow passage is formed between the pump body and the impeller, and the suction inlet and the discharge outlet are both located at the outer circumference of the impeller. There is a partition between the suction port and the discharge port, thereby isolating the suction port from the discharge port. We divide the fluid in the pump into two parts: the fluid between the blades and the fluid inside the fluid path. When the impeller rotates, under the action of centrifugal force, the peripheral velocity of the liquid in the impeller is greater than the circumferential velocity of the liquid in the flow path, so that an annular flow is formed. In turn, since the liquid sucked in from the suction port to the discharge port follows the impeller, the combined result of these two movements causes the liquid to produce the same longitudinal vortex as the impeller. So get the name of the vortex pump. It should be specially pointed out that the liquid particles in the pump body circumferential velocity less than the impeller circumferential velocity. In the longitudinal vortex process, the liquid mass enters the impeller blades several times and transfers the energy to the liquid particles in the flow channel through the impeller blades. Every time the liquid particle passes the leaf, it gains energy once. This is also the case of the same impeller diameter, the vortex pump vane pump head higher than other reasons. Not all liquid particles pass through the impeller. As the flow rate increases, the annular flow decreases. When the flow rate is zero, the annular flow is the strongest and the lift is the highest. Since the liquid in the flow channel is impinged by the liquid to transfer energy. At the same time also cause a greater impact loss, so the efficiency of the vortex pump is relatively low.
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