As an important form of centrifugal pump, double suction pump has been widely used in engineering due to its characteristics of high lift and large flow rate. This pump-type impeller is actually composed of two back-to-back impeller combination, the flow of water from the impeller into a volute. Double suction pump has the following characteristics: It is equivalent to two single-suction impeller of the same diameter at the same time work at the same impeller diameter flow can be doubled; pump shell level in the open, easy inspection and maintenance, while double Pump inlet and outlet in the same direction and perpendicular to the pump shaft, which will help pump and out of the water pipe layout and installation; double suction pump impeller structure is symmetrical, there is no axial force, the operation is relatively stable. In our country along the Yellow River lift pumping stations larger flow, head are higher, mostly with double suction centrifugal pump. The South-North Water Transfer Center Hui Nanzhuang pumping station also uses a double suction pump for water supply.
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