20SH-13中开泵 20SH-13中开泵是一种卧式离心泵，该类型的水泵具有流量范围比IS型的广，扬程不是很高的特点，主要适用于工厂、城市、电站、水利工程、农田灌溉等排水或给水用泵。
输送的物质固体颗粒杂质直径不能超过10mm，含量不能超过5%。
水泵输送的介质温度不能超过80°，入口压力不能超过0.6Mpa。
20SH-13中开泵结构说明： 20SH-13中开泵的吸入口与吐出口均在水泵轴心线下方，水平方向与轴线成垂直位置、泵壳.中开，检修时无需拆卸进水，排出管路及电动机(或其他原动机)从联轴器向泵的方向看去，水泵均为逆吋针方向旋转。
如根据用户特殊订货需要也可改为顺吋针旋转。
SH型农田灌溉水泵的主要另件有：泵体、泵盖、叶轮、轴、双吸密封环、轴套、轴承等。
除轴的材料为优质碳素钢外，其馀多为铸铁制成。
泵体与泵盖构成叶轮的工作室，在进出水法兰上制有安装真空表和压力表的管螺孔，进出水法兰的下部制有放水的管螺孔。
叶轮经过静平衡校验，用轴套和两侧的轴套螺母固定，其轴向位置可以通过轴套螺母进行调整，叶轮的轴向力利用其叶片的对称布置达到平衡，可能还有一些剩馀轴向力则同轴端的轴承承受。
泵轴由两个单列向心球轴承支承，轴承装在泵体两端的轴承体内，用黄油润滑，双吸密封环用以减少水泵压水室的水漏回吸水室。
20SH-13中开泵参数范围： 流量(Q):160—18000m3/h 扬程(H):12—125m 20SH-13中开泵型号意义： 6-SH-6-A 6-泵的进口直径为6寸 SH-卧式单级双吸清水中开泵 6-泵的比转速的1/10取整 A-叶轮外径切割代号 20SH-13中开泵装配、拆卸与安装 装配与拆卸 1 、装配转子部件：依次将叶轮、轴套、轴套螺母、填料套、填料环、填料压盖，挡水圈、轴承部件装在泵轴上，并套上双吸密封环，然后装上联轴器。
2、将转子部件装在泵体上，调整叶轮的轴向位暈到两侧双吸密封环的中间加以固定，将轴承体压盖同固定螺钉紧固。
3、装上填料，放好中开面纸垫，盖上泵盖打紧螺尾柱销后，拧紧泵盖螺母，最后装上墳料压盖。
但不要将填料压得太紧，填料过紧会使轴套发热，耗费功率较大，也不要压得太松，过松会使 液体渗漏大，水泵效率降低。
装配完成后，用手转动泵轴，没有擦碰现象，转动比较轻滑均勻即可，拆卸可按上述装配顺序相反地进行。
安装 1 、检査水泵和电动机应无损坏。
2、水泵的安装高度，加上吸入管路的水力损失，及其速度能，不得大于样本规定的允许吸上真空高度值。
基础尺寸应符合泵机组的安装尺寸。
泵型号流量Q扬程H（m）转速n（r/min）功率N（KW）效率η（%）最大允许吸上真空高度（m）m3/h L/S轴功率Pa配套功率6SH-612616219835455584787029004045.851.05572757456SH-6A 11214418031405067625529003033.838.54568727056SH-913017022036.247.261.25247.635290025.327.631.33774806756SH-9A 12014418031405043.84035290018.520.924.53072757058SH-629023428850658010093.582.5290079.185.088.61106271734.58SH-6A 16021526544.559.773.685.175.670.2290060.364.271.4906169714.58SH-9213288351608097.56962.55029005561.367.8757480715.34.558SH-9A 18027032450709054.54637.529004148.351556570655.55.03.88SH-132162883426080954841.335290034.938.140.2458185815.03.61.88SH-13A 198270310557586433631290030.533.134.4377680765.24.23.010SH-63604861001357165.1145091.510913276796612170561307210SH-6A 36048654095130150615450145076.789.498110747775610SH-936048661210013517042.538.532.5145055.561.567.775758380610SH-9A 3244685769013016035.530.525145040.245.747.855788582610SH-133604865761001351602723.519145033.136.236.445808682610SH-13A 3424144829511513422.220.317.4145025.827.628.637808380610SH-1936048657610013516017.51411145021.421.822.130808578610SH-19A 3204325048912014013.7118.6145015.415.815.822788272612SH-659079293616422026098908214502132452793007480755.44.53.512SH-6A 57675591816021025586787014501902172462607174715.54.73.612SH-6B 5402090015020025072675714501611802002507073705.64.93.812SH-957679297216022027065585014501281491681808084794.54.54.512SH-9A 530720893147200248554942145099.21161311558083784.512SH-9B 50468483514019023247.24337145082.597.71081357982784.512SH-136127929001702002503832.225.5145076.279.878.1908387804.512SH-13A 550720810153200225312620.5145058.160.758758084784.512SH-196127929351702202602319.414145047.349.847.6558184754.512SH-19A 504720900140200250201611.5145034.838.337.6457982754.512SH-2861179290017022025014.51210145021.832.233.1378183744.512SH-28A 52268579214519022011.8108.7145022.423.324.4307580774.514SH-6850125023634714012514504505256807281 3.516634611006207314SH-6A 85011801570223328436125112901470391462550630708703.514SH-6B 7451100146020730540510896771470313373422500707772.53.514SH-99721260144027035040080756514702683063194007984803.514SH-9A 9001170133025032537070655614502202472573007884793.514SH-9B 82610801225230300340595547.514501781982062607582773.514SH-13972126014802703504105043.83714701641791882208184793.514SH-13A 8641120133024031037041363014701211301361808084803.514SH-1997112601440270350400322622145099.710295.71328588823.514SH-19A 864112012962403103602621.516.5145076.577801108085733.514SH-28971126014402703504002016.213.4145064.465.370758285753.514SH-28A 864104412602402903501613.410145050.247.648.3557580713.520SH-614502016230040356064010898.48997058568073580072.579.576420SH-6A 1349187021403755205959385779704905646076307077743.620SH-9115020162450430560680665950970340390433500828377420SH-9A 140519102270390530630585042970300347360400747572420SH-9B17634904297027335574420SH-131550201624104305606704035.130970206219247280828880420SH-13A18705203197018624085420SH-191620201623404505606502722159701481171371808082704 1296360231117320SH-19A1870201652056017149701081011308076420SH-2816202016232545056064615.2112.810.697078.97978110858986424SH-927503420393076495010928071609606897277309008791881.324SH-9A 25503168364070888010106461539605165856107108690862.524SH-9(J)26007503973031938090 4.824SH-132502316834996958809725647.4389704604654265508388802.524SH-1924803170396070088011003732229702953102793808689852.524SH-19A 230428803600640800100031.527209702352382312808489852.524SH-20250036003800694.41000105524.52120.4745238.3248255.9340708382.55.554.824SH-2823402880342065080095023.521189701871952072508084.5812.524SH-28A 23402880342065080095017.515.513970145148154185778278.52.532SH-1947005500601064601305135016707953532.528.925.4730575580567567630788483.580.43.532SH-19A 45505310580062501260147516001735312926.523730492500496487560788483.580.43.5。