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A pump that transfers kinetic energy to liquid by applying a force to it through rotating impellers, thereby imparting an impulse to the liquid in the direction of its flow in order to transport it. The impeller is a disk of uniform thickness, with numerous radial small blades on both sides of its outer edge. On the pump casing at the corresponding position to the blade, there is an annular flow channel of constant cross-section; this entire flow channel is divided into a suction side and a discharge side by a partition, which are connected to the pump’s suction and discharge pipelines respectively. As the liquid inside the pump rotates along with the impeller, a certain centrifugal force is generated, pushing the liquid into the annular flow channel within the pump casing. Due to the shape of this flow channel, the liquid is forced to flow back and enter another flow channel behind it, starting from the root of the blades. Therefore, the path of motion of the liquid between the blade and the annular flow channel is a helical path that moves forward with respect to the stationary pump casing ； For a rotating impeller, it is a backward spiral. Vortex pumps are named after this swirling motion of the liquid. The liquid can enter between the blades multiple times to absorb energy, until it is finally discharged from the outlet. The operation of a vortex pump is somewhat similar to that of a multi-stage centrifugal pump, but it lacks energy conversion devices such as the volute or guide vanes found in centrifugal pumps. Vortex pumps transfer energy to the liquid by performing work repeatedly in succession, which allows them to generate high pressures. During the energy transfer process, significant energy loss occurs due to the repeated impacts of the liquid, resulting in a low efficiency of the pump, typically ranging from 20% to 50%. Vortex pumps are suitable only for applications that require a low flow rate (1–40 m3/h) and a high head (up to 250 meters), such as fire pumps, gasoline pumps in aircraft refueling trucks, and feed water pumps for small boilers. Vortex pumps can transport highly volatile liquids and those containing gases, but they should not be used to convey thicker liquids with a viscosity greater than 7 Pa·s or dirty liquids containing solid particles. Vortex pumps are characterized by low flow rates and high head pressure; they have a self-priming capability and can be used to transport liquids with a viscosity of less than 5 degrees E that contain no solid particles, as well as liquids similar to water. Such as gasoline, kerosene, alcohol, etc., it can be used for topping up water in small steam boilers, in the chemical and pharmaceutical industries, as well as for supplying water to high-rise buildings. For overcurrent components, materials such as stainless steel can also be used to transport corrosive liquids like acids and alkalis. The temperature of the conveying medium is -20 to +80 degrees. From a structural perspective, they can be divided into: single-stage, two-stage, and multi-stage ； Direct connection format, etc.