"This unit is safe and easy to maintain, and cost tens of thousands of yuan saved every year." Recently, Sichuan Coal Group Tatsu Bamboo Tieshan South Coal Mine successfully developed a bottomless valve diversion device to completely solve the main drainage pump maintenance problems, To ensure mine safety production. The mine east and west wings of a total of 12 main drainage pump, bottled water filling with the way to start each year about 6 main drainage pump due to damage at the end of the valve was replaced, invested about 1.8 million. In the daily operation, the pump often occurs at the end of the valve damage and can not be irrigated, almost every 2 to 4 times a year at the end of the valve leakage fault, maintenance workload is large, seriously affecting the normal mine drainage, in the event of a rainy season, on Mine safety poses a serious threat. Centrifugal pump bottomless valve drainage mainly vacuum pump, set the vacuum tank in two ways. The engineering technology (valves, pumps) comparative analysis of personnel, compared with the vacuum pump vacuum tank with less investment, only a one-time investment material costs, processing fees, no maintenance and so on. However, because there is no ready-made device reference, engineering and technical personnel after repeated access to information, calculation, by setting the vacuum tank, the use of pump self-priming to achieve the purpose of automatic water diversion valve, finally designed a set of bottomless valve diversion device. After three days of production, the device installed in the West Wing 0 horizontal pump room, a one-time test success. At present, the device works well, not only improves the water pump drainage efficiency, but also greatly reduces the power consumption and saves the cost investment.
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