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Vortex pump (also known as vortex pump) is a vane pump. Mainly by the impeller, pump and pump cover composition. The impeller is a disc blades radially arranged uniformly on the circumference. Between the impeller and pump body forming an annular flow channel, inlet and discharge port are in the outer circumference of the impeller. A separator between the inlet and outlet port, whereby the suction and discharge outlet isolated.

We pump the liquid inside is divided into two parts: the liquid and the liquid flow passage between the blades. When the impeller rotates, centrifugal force, the circumferential speed of the impeller is greater than the peripheral speed of the liquid flow path of the liquid, so the formation of "annular flow" shown in Figure 1. Also, because from the suction port to the discharge outlet in advance along with the impeller, the synthesis results of these two movements, causes the liquid to produce the same steering wheel "vertical vortex." Thereby obtaining the name of the vortex pump. Of particular note is that the liquid particles in the pump flow path circumferential speed less than the peripheral speed of the impeller.
In the longitudinal vortex process, the liquid particles repeatedly into between the impeller blades, impeller blades by energy transfer to the liquid particles within the flow path. Each liquid particle after a blade, once you get energy. This is the same under the impeller diameter, the vortex pump vane pump head higher than any other reason. Not all the liquid particles through the impeller, with the increase in traffic, "annular flow" weakened. When the flow is zero, "annular flow" the strongest, the highest lift. Since the liquid flow channel is transmitted through the liquid impact energy. But also cause greater impact losses, relatively low efficiency of the vortex pump.
By rotation of the impeller to force the liquid in the direction of motion of the liquid to the liquid in the impulse to pass kinetic energy to achieve the pumping liquid. First impeller is thick disc, on both sides of its radial outer edge had a lot of small leaves. On the blade corresponding parts of the pump casing has a first-class section of the annular passage, the entire flow path is divided into a suction compartment tongue, two rows of square, respectively, and the suction pump, exhaust pipe linked. Together with the liquid to produce the pump impeller rotation when a certain centrifugal force, thrown out into the pump casing in the annular flow channel, and in limiting the flow channel shape reflux forced to re-enter from the back of the blade root leaves another channel. Thus, motion of the liquid between the vanes and the annular flow path trace, stationary pump housing is a forward helix; and for rotating the impeller for a reverse helix. That is because this vortex pump vortex motion of the liquid is named. Liquid can enter between the blades repeatedly to get energy, until finally discharged from the discharge port. Vortex pump work somewhat like a multi-stage centrifugal pumps, but did not like the centrifugal vortex pump volute or vanes as energy conversion devices. Vortex pump is mainly for power through multiple sequential manner to transfer energy to the liquid, they are able to produce higher pressure. In the energy transfer process, due to the liquid multiple impacts, energy loss is large, less efficient pump, generally 20 to 50%. Vortex pump is only suitable for applications requiring low flow (1 to 40 m3 / h), the higher lift (up to 250 m) applications, such as fire pumps, aircraft refueling car petrol pump, a small boiler feed water pump. Vortex pump can deliver high volatility and a liquid containing a gas, but should not be used to transport a viscosity greater than 7 Pas relatively thick liquid and the clean liquid containing solid particles. Vortex pump flow characteristics of small, high lift, self-priming, can be used to transport the viscosity of less than 5 degrees E without solid particles and similar to water. Such as gasoline, kerosene, alcohol, etc., as a small steam boiler water, chemical, pharmaceutical, water towers and other purposes. Flow components as well as stainless steel and other materials can be used to transport acid, alkali corrosive liquids. Transmission medium temperature -20 to + 80 degrees. It can be divided into the structure; single-stage, two-stage, multi-stage; Direct forms and the like.