Advantages of annular vortex shell for submerged  pump

    The design of the annular water pressure chamber for the submerged  pump is relatively simple, and it is easy to be processed, so it is widely used and it has the following advantages.
    If small size high lift or low specific speed pump is installed with circular volute, hydraulic performance can be improved.
    If the high specific speed pump is installed with circular spiral casing, hydraulic performance will be declined. Specific, specific speed is less than 40 pump. The pump efficiency will be improved. The comparative speed is greater than 40 pump, pump efficiency may be the 95% of the efficiency to match with ordinary single volute pump.
    In the ordinary single volute, pressure and velocity along the circumference of the impeller is in a uniform distribution when it is only in the optimal condition. The situation of the circular volute is just the opposite. At shut-off points, pressure and velocity along the circumference of the impeller evenly distributed. If the flow rate increases, this uniform disappear.
    Therefore, under the optimal conditions the circular volute hydraulic is generally big than ordinary single volute. But for low specific speed pump, circular volute pump efficiency is improved. This dues to processing machinery in the volute surface. It improves the surface roughness and reduces the hydraulic loss. It exceeds the adverse consequences of the uneven pressure and velocity distribution resulting.
    If you want to know more about the content of the molten salt pump, please see Warwick pump company official website: www.hwpump.com.