Development of pump industry equipment
Along with industrial pumps are undertaken and carried out together. In the 19th century, foreign countries have had the perfect match types and varieties of pumps, and have been widely used. According to statistics, around 1880, generally use centrifugal pump output accounted for more than 90% of the entire output of a power unit with pumps, chemical pumps, mining pumps and other special use of pumps, only about 10% of the pump output. By 1960, the use of the pump is usually only 45%, and especially useful pump accounted for 55%. According to the ongoing trend, especially use of the pump, the pump will have to progress than the usual share of useless. In the early 20th century, the first submersible sewage pump successfully developed by the United States, use it to replace deep-well pump. Subsequently, the Western European countries have also carried out research and development, and continue to improve gradually improve. Such as the Rhine lignite mines in Germany, using a variety of submersible sewage pump more than 2,500 units, the highest capacity of 1600kW, head 410m. China submersible sewage pump is a 1960s era unfolded, during which the work surface submersible pumps used to irrigate farmland in the south already, and small and medium-capacity submersible pump series has been constituted and put into batch production up. Large-capacity high-voltage submersible pumps, submersible motors have also come out,large submersible pumps which are 500-1200kw have been put into operation at the mine.
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