3. The speed of the pump shaft speed means revolutions per minute, with the "n" represents, the unit is r / min 4. efficiency and shaft power pumping efficiency slurry is called slurry efficiency, with "η" said pumping water efficiency and when it has the following relationship ηm = ER η% (1-6) Where:? ER- and slurry characteristics related to efficiency reduction factor, the value lower coefficient of HR and head equal, namely HR = efficient transport water pump when ERη-%, obtained from the test first slurry pump disassembly packing ring (cap), is the most common kind of seal, seal water by injection in the form of slurry pump sleeve (interval sets), continuous injection of the filler material inside a certain pressure of water, a slurry pump to prevent leakage; for expeller seal not suitable for multi-stage pumps in series, with packing seal. Simple packing seal structure, easy maintenance slurry pump vacuum cover (spiral), cheap. Mechanical seals, sealing is usually relatively high demand situations. In particular, some chemicals, the food industry, not only requires sealing slurry pump, but most are not allowed to add extra ingredients into the pump. The disadvantage is that the high cost, maintenance difficulties. Slurry pumps, slurry bush (spacers) 80ZJ-I-A33 (certified merchants) are provided by Shijiazhuang-Pump Co., Ltd. faction. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is specialized in "slurry pumps, submersible pumps, sewage pumps, chemical pump, pulp pump, water pump, mud pump, multi-stage" of the enterprise, the company of " honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Manager Xu.