Impeller structure of submersible sewage pump

Impeller structure of submersible sewage pump
1, impeller structure type: the structure of the impeller is divided into four categories: blade (open, closed), swirling, flow channel, (including the single flow and dual flow) spiral centrifugal four, Semi-open impeller manufacturing convenience, when the impeller caused by plugging, it can be easily cleaned and maintenance, but in the long run, the erosion of the particles will make the blade and the pressure chamber side wall of the gap increases, so that efficiency reduce. And the increase in the gap will destroy the pressure distribution on the blade. Not only produce a lot of vortex loss, but also increase the axial force of the pump, at the same time, due to increased clearance, liquid flow in the flow channel stability is damaged, the pump vibration, the type impeller is not easy to transport Large particles and long fiber medium, from the performance point of view, the type of impeller efficiency is low, the maximum efficiency is about equivalent to about 92% of ordinary closed impeller, lift curve is relatively flat.
2, whirlpool impeller: the use of the impeller pump, impeller part or all of the compression chamber flow. So no clogging performance, particle capacity and long fiber through the ability of strong. Particle flow in the pressurized water chamber by impeller rotation generated by the eddy current driven by the movement of suspended particles itself does not produce energy, but in the liquid and the exchange of energy within the channel. In the course of the flow, suspended particles or long fibers do not contact with the leaves, leaves more wear and more light, there is no gap due to increased wear and tear in the long run will not cause serious decline in efficiency, the use of the Type impeller pump suitable for pumping large particles and long fibers containing medium. From the performance point of view, the efficiency of the impeller is low, only about 70% of the ordinary closed impeller, lift curve is relatively flat.