According to national statistics, the power consumption of the pump products accounted for about 20% of the total generating capacity, accounting for 5% of the country's total fuel consumption. Therefore, the strengthening of the pump industry energy-saving technology has become an important part of the national energy conservation. The Ministry of Science and Technology and the Development and Reform Commission jointly issued "China Energy Technology Policy" (2006) made it clear that the development, promotion of high-efficiency pumping equipment. Pump by perfect three-dimensional flow field, two-phase flow analysis and calculation methods to improve processing technology, so that the pump energy efficiency of 83% to 87%. "revised in October 2007, 28 new" Energy Conservation Law "," The state encourages industrial enterprises to adopt efficient, energy-saving motors, boilers, furnaces , fans, pumps and other equipment. " Abstract: multistage centrifugal pump manufacturers from Hunan well-known the Changsha Pump manufacturers Huali Pump (www.csshuibeng.com), finishing, reproduced, please keep the source. Man I. Overview 100 DM / MD 16 horizontal multi-stage pumps, centrifugal principle, the use of the state recommended energy-efficient products hydraulic model, living in a technology leader in the industry. Changsha multi-stage pump prices of such products are moderate, is a cost-effective product. DM / MD mining multi-stage pump for conveying solid particles content is not more than 1.5% neutral mineral water (particle size less than 0.5 mm) and other similar sewage transmission medium temperature not greater than 80 ° C, apply to steel mills, mine drainage, sewage, transportation and other occasions., model description of cases of 100 DM / MD 16 * 5 100 - pump inlet diameter (mm) DM/MD- multi-stage, segmental wear pump 16 - the pump head (m) 5 - pump series 5, the structure shows a pump housing part of the pump housing part by the bearings, front section, the middle segment, the guide vane bolt connection into a whole, the preceding suction the mouth line was horizontal, after segment spit out the mouth line and the horizontal and vertical. 2, the rotor part of the rotor is mainly composed of bearings and installed in the shaft of the impeller, bushings, balance plates and other parts. Axis parts with flat key and the sleeve nut fastening to become one with the shaft. The entire rotor is supported by bearings at both ends in the pump housing, the number of the rotor portion of the impeller is under pump stages may be. 3, the bearing part of the DM / MD pump bearings sliding bearings and rolling two, according to the model may be, are not subjected to axial force. Pump operation should be allowed the rotor part of the axial swimming in the pump housing, can not be used radial bearings. 4, pump seal pump of the preceding paragraph, the middle, the sealing surface between the rear section are made of molybdenum disulfide grease seal between the rotor portion and the fixed portion by the seal ring, the guide vane sets, packing seal, when the sealing ring and the guide vanes sets wear has affected the work and performance of the pump should be replaced. 5, the balance mechanism balancing mechanism by gimbals, balance disc, balance sets the balance mechanism is used to balance the axial force of pump.