Dry Scroll Vacuum Pump is also called vortex pump, regeneration pump, etc. It is called dry Scroll Vacuum Pump because it sucks and discharges liquid by the action of vortex motion caused by the rotation of impeller. According to different types, vortex pump can be divided into single-stage vortex pump, centrifugal vortex pump, stainless steel dry Scroll Vacuum Pump and other vortex pumps.
At present, the flow rate of general Dry Scroll Vacuum Pump is 0.2 ~ 27m3 / h. The working principle of general vortex pump when the prime mover drives the impeller in the pump to rotate through the shaft, the liquid enters the flow passage from the suction population, and is impacted by the centrifugal force of the rotating impeller, falling into the surrounding annular flow passage, so that the liquid rotates in the flow passage. Because every liquid particle is affected by centrifugal force, the liquid inside the impeller is more affected by centrifugal force, while the liquid inside the runner is less affected by centrifugal force. Because of the different magnitude of centrifugal force, the liquid makes longitudinal vortex motion. The liquid circulates through the passage between the blades many times in the passage by the longitudinal vortex.
Every time the liquid passes through the passage between blades, the head will be increased once, and finally the liquid will be squeezed out and discharged from El. After the liquid is discharged, a local vacuum will be formed in the passage between the blades, and the liquid will continuously enter the impeller from the suction port, and repeat the above movement process. In this way, the vortex pump sucks the liquid at the same time and discharges the liquid at the same time, so as to work continuously. It can be seen from the working principle of general vortex pump that it is like the function of multi-stage centrifugal pump. Each blade passage is equivalent to one stage, and the energy increases once the liquid passes through the passage. Therefore, the head of general vortex pump is 2-5 times larger than that of centrifugal pump under the same impeller diameter, so it is a high head and small flow pump. Compared with the centrifugal pump with the same performance, the volute pump is smaller and lighter; compared with the volute pump with the same head, the volute pump has much smaller size and simpler structure. So the general vortex pump has the advantages of simple structure, compact, small volume, light weight and low cost.
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