1. Technical field The products of the MJ centrifugal low-pressure coal slurry pump project meet the general machinery and novel machinery fields in the transformation of high-tech industries in the "High-tech Fields Supported by the State"; this project belongs to fluid machinery and fluid power engineering technology in the petrochemical industry.  2. Main technical innovation content The MJ centrifugal low-pressure coal slurry pump undertaken by Shanghai Forrest Fluid Machinery Co., Ltd. started in April 2009. After research on process, technology and equipment, the key has been overcome.   1) Technology has achieved the expected goal.  The specific innovative contents are as follows: 2) The vertical and double-shell structure of the novel pump can meet the requirements of preventing clogging and sticking; 3) The pump adopts a vertical structure, and the impeller and the pump frame are disassembled upward as a whole, which is convenient for the installation and maintenance of the pump; 4) The parts of the flow parts are made of wear-resistant materials to extend the service life of the equipment; 5) The pump mechanical seal and auxiliary circulation system meet the requirements of transporting special media; 6) The on-site instrument data collection and automatic speed adjustment are realized, with a high degree of automation.      3. Intellectual property rights: Since the project began research and development in 2009, a total of 6 patents have been applied for and obtained, including 1 invention patent.  5 utility novel patents. The details are as follows: 1) Invention patent: A fluid machinery impeller (Patent No.: 201410534614.8; authorization announcement date: 2016/9/21) 2) Utility model: vertical detachable dual-housing centrifugal pump (Patent No.: 201120181913.X; authorization announcement date: 2011/12/21) 3) Utility model: A pump sealing structure with purification and protection device (Patent No.: 201320591932.9; authorization announcement date: 2014/4/16) 4) Utility model: A pump sealing structure with bearings placed in a double-end mechanical seal (Patent No.: 201320595481.6; authorization announcement date: 2014/5/7) 5) Utility model: A mechanical seal flushing device (Patent No.: 201420617952.3; authorization announcement date: 2015/3/11) 6) Utility model: A vertical two-stage centrifugal coal slurry pump (Patent No.: 201620093293.7; authorization announcement date: 2016/7/13) 4. Application promotion: The development and good working performance of MJ centrifugal low-pressure coal slurry pump project products have been used in national large-scale coal chemical engineering projects, such as Shenhua Group, Huayi Group, Guangdong Shunxin Coal-to-Liquids, and Yitai Group., and customers have responded well!       With the improvement of product brands, it has been widely used in engineering projects in Guangdong, Xinjiang, Shanxi, Inner Mongolia, and Yunnan such as PetroChina, Sinopec, CNOOC, and Shenhua. The successful development of products not only replaces imports, but also achieves the goal of localization, localization, and industrialization proposed by the country.&&