The difference of structure between vortex pump and centrifugal pump:
A vortex pump (also called a vortex pump) is a vane pump. It is mainly composed of impeller, pump body and pump cover. The impeller is a disk, and the blades on the circumference are arranged in a radial arrangement. The annular flow passage is formed between the impeller and the pump body, the inlet and outlet of the impeller in the outer circumference. There is a barrier between the suction port and the discharge port, whereby the suction port is separated from the discharge port.
The main flow passage parts of centrifugal pump are suction chamber, impeller and water chamber. The front room is located on the water inlet of the impeller to the liquid into the impeller; the pressurized water chamber main spiral water pressure chamber (spiral), guide vane and guide vane three forms; the impeller is the most important work element pump, is the heart of the flow passage components, impeller cover and blade by an intermediate.
Difference in principle:
Centrifugal pump before work, the liquid pump is full, and then start the fast rotating impeller, centrifugal pump, impeller blades driven by fluid rotation, the liquid is rotated by the inertia to flow to the outer edge of the impeller, the impeller from the suction chamber into the liquid at the same time, in this process, the liquid flow around the blades of the impeller, around the liquid flow movement a lift in the leaves, leaves with a masterpiece in turn and the lift is equal and opposite to the force acting on liquid liquid, the liquid can be energy flow out of the impeller, the liquid kinetic energy and pressure energy were increased.
When the impeller rotates, under the action of centrifugal force, the speed of the liquid in the impeller is larger than the velocity of the liquid in the channel, so the &ldquo shown in Figure 1 is formed. The annular flow ”. Also, from the suction port to the exhaust port, the liquid moves along the impeller. The composite results of the two movements make the liquid produce the same &ldquo as the impeller; the longitudinal vortex ”. Thus get the name of vortex pump. It is important to point out that the circumferential velocity of the liquid particles in the flow passage of the pump is less than the circumferential velocity of the impeller.
In the longitudinal vortex process, the liquid particles enter the impeller blades several times, and the energy is transmitted to the liquid particles in the passage through the impeller blades. Once a liquid particle passes through a blade, one energy is gained. This is the same impeller diameter, the vortex pump than other vane pump head high. Not all liquid particles pass through the impeller; as the flow increases, the “ annular flow ” weakens. When the flow rate is zero, “ annular flow ” the strongest and highest lift.