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China University of Mining and the revitalization of national industry as its mission, take the initiative to assume the development of non-leakage pump history mission, based on the international advanced sealing theory and years of practical teaching experience, the use of mechanical seals combined with the deputy impeller seal sealing technology, In 2002, the company cooperated with Shandong Huifeng Machinery Group Co., Ltd. to develop a slurry pump and a circulating pump that did not leak water. To fill the gaps in the domestic leak-free technology.
Today, HSBC Machinery Group Corporation has successively developed a series of non-leaking slurry pumps and circulating water pumps based on this "leak-free sealing technology", which is the only media pump manufacturer in China who bid farewell to the packing seal.
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 seals are sometimes not as reliable as packing, so the Chinese media pump sealing technology has always been the world packing, sealing effect is far behind and imported pumps.