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目录1、概述·················································12、结构特征·············································23、技术特性—性能曲线及性能表···························44、安装图及安装尺寸表··································435、安装、调整··········································856、使用、操作··········································877、故障分析与排除······································888、保养、维修··········································889、随机备件及易损件明细表······························9010、运输、贮存·········································9111、开箱及检查·········································9112、简单计算说明·······································911本使用说明书编写依据：GB9969.1—1998《工业产品使用说明书总则》1、概述1.1MD型煤矿用耐磨多级离心泵，是我厂在D型煤矿用多级清水离心泵的基础上，改进设计的一种耐磨多级离心泵。MD型煤矿用耐磨多级离心泵高效节能，耐磨可靠，寿命长。适用于输送清水及固体颗粒含量不大于1.5%(体积浓度)的中性矿井水(粒度小于0.5mm)，以及类似的其他污水的液体。特别适用于煤矿等矿山排水。MD型煤矿用耐磨多级离心泵输送的介质温度不高于80℃。1.2泵型号意义说明MD450-60×6100MD45×8MD—煤矿用耐磨多级离心泵100—吸入口直径为100mm450—设计点流量（m3/h）MD—煤矿用耐磨多级离心泵60—设计点单级扬程（m）45—设计点单级扬程（m）6—泵的级数8—泵的级数1.3性能范围（按设计点）流量：6.3～720m3/h扬程：22.8～1140m1.4产品执行标准：MT/T114-2005《煤矿用多级离心泵》。警告警告a）本系列泵的配套电机：YB(高压)及YB2系列隔爆电动机可用于井下，但不能用于采掘工作面，用于采掘工作面必须配用YBK系列电动机，电动机必须要可靠接地！b）泵不允许在无液体介质状态下点动或运转！c）泵组的转动部分在运行时不准触摸！22、结构特征MD型煤矿用耐磨多级离心泵为两端支承，壳体部分为节段式，泵的传动方式是通过柱销弹性联轴器与电机联结，泵的旋转方向，从驱动端看，泵为顺时针方向旋转。泵的结构见图1。2.1定子部分主要由吸入段（进水段）、中段、吐出段（出水段）、导叶、填料函体（尾盖）和轴承体等分别用拉紧螺栓联接成一体，从联轴器端看，泵吸入口为水平右方向，吐出口为垂直向上。2.2转子部分主要由轴、叶轮、平衡盘、轴承及轴套等组成。2.3泵的密封2.3.1泵吸入段（进水段）、中段、吐出段（出水段）之间的静止结合面用纸垫或二硫化钼来密封。2.3.2泵各级间采用节流密封。2.3.3泵的两侧轴封采用软填料密封。2.3.4采用挡水圈挡水，防止水进入轴承。2.4轴承部分除MD6-25、MD12-25型泵轴承采用《GB/T292-94》角接触球轴承以外，其余泵型的整个转子由两端的圆柱滚子轴承《GB/T283-94》支承；轴承采用3号通用锂基润滑脂润滑。由于MD6-25、MD12-25型泵轴承采用了《GB/T292-94》角接触球轴承，所以转子无轴向窜动量，其余泵型的转子应有轴向窜动量。2.5平衡部分由于叶轮前后盖板受压面积不等，产生轴向力，此轴向力由平衡装置承担。泵的平衡装置由平衡盘、平衡套、平衡环组成。泵的平衡室由吐出段（出水段）、填料函体（尾盖）、平衡水管部件所组成，平衡水管部件绝对不允许堵塞，可用闸阀调节平衡水管部件内水的流动。320、填料压盖19、填料18、水封管部件17、平衡盘16、填料函体（尾盖）15、平衡环14、平衡套13、吐出段（出水段）12、导叶套11、平衡水管部件10、导叶9、中段8、叶轮7、密封环6、吸入段（进水段）5、拉紧螺栓4、轴3、滚动轴承部件2、滚动轴承1、柱销弹性联轴器部件2019181716151413121110987654321图1 MD型煤矿用耐磨多级离心泵结构图43、技术特性—性能曲线及性能表01.534.567.5910.51213.51505101520253035H(m)00.511.522.533.5P(kW)0102030405060η(%)012345NPSHR(m)HPηNPSHRMD6-25n=2950r/min3Q(m/h)性能曲线图性能表型号流量Q(m3/h)扬程H(m)转速n(r/min)效率η(%)功率(kW)必需汽蚀余量NPSHR(m)叶轮直径(mm)质量(kg)轴功率P电机功率MD6-25×33.756.37.5807570.4295033.042.043.82.483.063.285.52.02.02.214386MD6-25×4106.810093.83.304.084.377.596MD6-25×5133.5125117.34.135.115.477.5106MD6-25×6160.1150140.74.966.136.5611116MD6-25×7186.3175164.25.787.157.6511126MD6-25×8213.5200187.66.618.178.7515136MD6-25×9240.2225211.17.439.199.8415146MD6-25×10266.9250234.58.2610.2110.9418.5156MD6-25×11293.62752589.0911.2312.0318.5166MD6-25×12320.3300281.49.9112.2513.1218.5176MD6-25×13347325304.910.7413.2814.2218.5186MD6-25×14373.7350328.311.5614.3015.3118.519650246810121416182005101520253035H(m)01234567P(kW)0153045607590η(%)012345NPSHR(m)HPηNPSHRMD12-25n=2950r/min3Q(m/h)性能曲线图性能表型号流量Q(m3/h)扬程H(m)转速n(r/min)效率η(%)功率(kW)必需汽蚀余量NPSHR(m)叶轮直径(mm)质量(kg)轴功率P电机功率MD12-25×37.512.515.081.37568.3295043.352.152.63.834.905.307.52.02.02.3146106MD12-25×4108.4100915.116.537.0711119MD12-25×5135.6125113.86.408.178.8411131MD12-25×6162.7150136.67.679.8010.6115144MD12-25×7189.8175159.38.9511.4312.3715157MD12-25×8216.9200182.110.2313.0714.1418.5170MD12-25×9244.0225204.811.5114.7015.9118.5183MD12-25×10271.1250227.612.7916.3317.6822195MD12-25×11298.2275250.414.0717.9719.4522208MD12-25×12325.3300273.115.3519.6021.2130223MD12-25×13352.4325295.916.6221.2422.9830236MD12-25×14379.5350318.617.9022.8724.7430250602.557.51012.51517.52022.525010203040506070H(m)02468101214P(kW)0102030405060η(%)012345NPSHR(m)HPηNPSHRMD12-50n=2950r/min3Q(m/h)性能曲线图性能表型号流量Q(m3/h)扬程H(m)转速n(r/min)效率η(%)功率(kW)必需汽蚀余量NPSHR(m)叶轮直径(mm)质量(kg)轴功率P电机功率MD12-50×36.312.515.0158.8150142.7295030.642.544.68.9012.0113.0718.52.02.02.1204258MD12-50×4211.7200190.311.8716.0217.4322279MD12-50×5264.6250237.914.8420.0221.7930300MD12-50×6317.5300285.517.8024.0326.1530321MD12-50×7370.4350333.120.7728.0330.5137342MD12-50×8423.4400380.623.7432.0434.8645363MD12-50×9476.3450428.226.7036.0439.2245384MD12-50×10529.2500475.829.6740.0543.5855405MD12-50×11582.1550523.432.6444.0547.9455426MD12-50×1263560057135.6048.0652.30754477048121620242832364006121824303642H(m)01.534.567.5910.5P(kW)0153045607590η(%)012345NPSHR(m)HPηNPSHRMD25-30n=2950r/min3Q(m/h)性能曲线图性能表型号流量Q(m3/h)扬程H(m)转速n(r/min)效率η(%)功率(kW)必需汽蚀余量NPSHR(m)叶轮直径(mm)质量(kg)轴功率P电机功率MD25-30×3152530104.79077.7295055.259.856.97.7510.2511.16152.02.02.3160175MD25-30×4139.6120103.610.3313.6614.8818.5192MD25-30×5174.5150129.512.9117.0818.5922209MD25-30×6209.4180155.415.5020.4922.3130226MD25-30×7244.3210181.318.0823.9126.0330243MD25-30×8279.2240207.220.6627.3229.7537260MD25-30×9314.1270233.123.2430.7433.4737277MD25-30×1034930025925.8334.1637.194529480714212835424956637006121824303642H(m)036912151821P(kW)0153045607590η(%)012345NPSHR(m)HPηNPSHRMD46-30n=2950r/min3Q(m/h)性能曲线图性能表型号流量Q(m3/h)扬程H(m)转速n(r/min)效率η(%)功率(kW)必需汽蚀余量NPSHR(m)叶轮直径(mm)质量(kg)轴功率P电机功率MD46-30×3304655107.39076.2295060.066.862.514.6116.8818.26222.22.42.9164180MD46-30×4143120101.619.4722.5024.3530197MD46-30×5178.815012724.3428.1330.4437214MD46