Second, the structure and working principle NSQ submersible slurry pump for the pump and motor coaxial one, NSQ300-30-55 pumping sand pump, rotary pump impeller driven by the motor shaft work, NSQ150-60-75 pumping sand pump, energy passed to the slurry medium, to produce a certain velocity, pumping sand pump, driven solids flow to achieve slurry transport. Its main features are as follows: 1, the whole structure of the dry pump motor. Motor with mechanical seal protection, can effectively prevent high pressure water and impurities into the motor cavity. XI, what is the efficiency of the pump? How formula? It refers to the effective power and shaft power ratio pump. η = Pe / P pump power usually refers to the input power, that power the pump shaft reached the prime mover, it is also known as shaft power, with P said. Effective power ie: pump head and mass flow rate and the acceleration of gravity. Pe = ρg QH (W) or Pe = γQH / 1000 (KW) ρ: pumped liquid density (kg / m3) γ: pumping liquid severe γ = ρg (N / m3) NSQ500-15-45 pumping sand pumps, pumping sand pumps, submersible suction pump sand Ltd provided by the Shijiazhuang-send pump. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) strong, credible, and other industries in other Shijiazhuang, Hebei accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shijiazhuang-faction pump into the brilliant and you work for a better future!