Since the domestic non-leak seal technology - mechanical seal applied to industrial pumps, China has a number of pump seals the use of mechanical seals, but the effect is not satisfactory, especially in the coal washing industry, because the pump conveys the liquid solid particles Many operating conditions are poor, mechanical seal is sometimes not as reliable as the packing, so the Chinese media pump sealing technology has always been packing the world, the sealing effect is far behind and imported pumps China University of Mining to revitalize the national industry as its mission, take the initiative To assume the history of the development of non-leakage pump medium, according to the international advanced sealing theory and years of practical teaching experience, the use of mechanical seals combined with Deputy impeller seal sealing technology, in 2002 with Shandong Province HSBC Machinery Group Corporation Developed a "drip leak" of the slurry pump, circulating pump. Fill the gap of the domestic leak-free sealing technology Today, HSBC Machinery Group Corporation has developed a series of non-leaking slurry pump and circulating water pump based on this "leak-free sealing technology", which is the only one in China to bid farewell to packing gas pump production factory.
