Sichuan Provincial Bureau of Quality Supervision recently in the province of water pump manufacturers to produce a special spot checks. Mainly to 35 production enterprises in Leshan, Chengdu, Meishan, Yibin and other four regions extracted 35 sets of (70) pump samples for testing. Including small submersible pump 19, submersible sewage pump 13 groups, submersible screw pump 2, submersible pump with a group of wells, of which 29 were qualified, with a pass rate of 82.9% over the same period increased by 23.3% . The unsafe safety performance and measures accounted for 66.6% of this substandard spot checks, there are three companies without grounding measures or set up a false grounding device, there are two companies insulation products failed, this product directly Endanger the user's life and safety, safety performance is still the province's submersible pump product quality weaknesses. In addition, some companies to reduce costs, motor shortage of materials and the selection of inferior materials, hydraulic model of the pump without careful design selection, coupled with to improve production efficiency, reduce manufacturing and assembly quality, impeller mouth rings, bearings and shaft seal Mechanical friction loss is also contributed to the main reason for substandard product efficiency.
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