Compared With Other Types Of Pumps, Vortex Pumps Have The Following Characteristics

(1) A vortex pump is the simplest high head pump in terms of structure. Compared with centrifugal pumps of the same size, its head is 2-4 times higher than that of centrifugal pumps; Compared to volumetric pumps with the same head, its size is much smaller and its structure is much simpler.
(2) The efficiency of a vortex pump is very low (due to the large impact loss of liquid in the flow channel), with a maximum of 45% and usually between 15% and 40%. Therefore, it is difficult to make a high-power pump. From the current production of vortex pumps, the power generally does not exceed 30 kW. But the efficiency of centrifugal pumps with low specific speed is lower than it, so vortex pumps are used in many situations to replace centrifugal pumps with low specific speed.
(3) Most vortex pumps have self suction capability, and some vortex pumps can also extract air or transport vapor-liquid mixtures, which is beyond the capabilities of ordinary centrifugal pumps.
Specifically, for a closed impeller vortex pump, self suction can be achieved by installing a simple additional device. For vortex pumps with open impellers and closed channels, they have self-priming ability and are usually used for air extraction; However, vortex pumps with open impellers and open flow channels are used for transporting liquids and cannot self suction. Usually, these two types of pumps are assembled together, with the former serving as a vacuum pump and the latter as a working pump. For example, there are vortex pumps for fuel trucks and other structures of vortex pumps.