Second, the structure and working principle NSQ submersible slurry pump for the pump and motor coaxial one, driven by the motor shaft while working pump impeller rotates NSQ150-55-75 mechanical seal, transfer energy to the slurry medium, to produce certain flow rate, 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. 1. Check and precautions before installation: 1) operating environment should comply with the conditions of use. 2) the actual flow rate, head should be consistent with the performance curve, the optimum flow rate range is between 80% to 120% of rated flow; the flow rate exceeds 120% of rated flow may cause serious damage to the unit. 3) Check the unit's assembly quality is good NSQ300-30-55 mechanical seals, fasteners without loosening NSQ150-60-75 mechanical seal, cables for damage, power supply and electrical equipment is reliable. 4) Check the supply voltage, frequency and whether the nameplate matches the requirements; check starting, control, protection facilities are starting to be intact. 5) Check the oil in the oil chamber is moderate; unit at the vertical position to the fuel inlet oil level should be, or should be, such as turbine oil to taste. NSQ250-35-55 _NSQ100-25-22 mud pump mechanical seal provided by the Shijiazhuang-Pump Co., Ltd. faction. 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!