《水处理技术（双语）》课件——泵的基础知识.pptxVIP

PumpBasics泵的基础知识

泵的类型及应用Typesofpumpsandapplications泵是输送液体或使液体增压的机械。它将原动机的机械能或其他外部能量传送给液体，使液体能量增加。Apumpisamachinethatconveysaliquidorpressurizesaliquid.Ittransmitsmechanicalenergyfromtheprimemoverorotherexternalenergytotheliquidtoincreasetheenergyoftheliquid.泵主要用来输送水、油、酸碱液、乳化液、悬乳液和液态金属等液体，也可输送液、气混合物及含悬浮固体物的液体。Pumpsaremainlyusedtoconveyliquidssuchaswater,oil,acidandalkaliliquids,emulsions,suspensionliquidsandliquidmetals,andcanalsoconveyliquidandgasmixturesandliquidscontainingsuspendedsolids.

泵的类型及应用Typesofpumpsandapplications按泵的工作原理可将泵分为容积式泵、叶片式泵和其他类型的泵。Pumpscanbedividedintopositivedisplacementpumps,vanepumpsandothertypesofpumpsaccordingtotheworkingprincipleofthepump。图为动力式泵PoweredPumps图为容积式泵Volumetricpumps

泵的类型及应用Typesofpumpsandapplications除按工作原理分类外，还可按其他方法分类和命名。如，按驱动方法可分为电动泵和水轮泵等Inadditiontoclassificationaccordingtotheworkingprinciple,canalsobeclassifiedandnamedaccordingtoothermethods.Forexample,accordingtothedrivingmethodcanbedividedintoelectricpumpsandwaterwheelpumps,etc.图为水轮泵Waterwheelpumps图为电动泵ElectricPumps

泵的类型及应用Typesofpumpsandapplications按结构可分为单级泵和多级泵Accordingtothestructurecanbedividedintosingle-stagepumpandmulti-stagepump图为多级泵Multi-stagepumps图为单级泵Single-stagepumps

泵的类型及应用Typesofpumpsandapplications按用途可分为锅炉给水泵和计量泵等Accordingtotheusecanbedividedintoboilerfeedpumpandmeteringpump,etc.图为锅炉给水泵Boilerfeedpump图为计量泵MeteringPumps

泵的类型及应用Typesofpumpsandapplications按输送液体的性质可分为水泵、油泵和泥浆泵等Accordingtothenatureofthetransportedliquidcanbedividedintopumps,oilpumpsandmudpumps,etc.图为油泵Oilpumps图为水泵WaterPump图为泥浆泵Mudpumps

泵的类型及应用Typesofpumpsandapplications泵的各个性能参数之间存在着一定的相互依赖变化关系，可以画成曲线来表示，称为泵的特性曲线，每一台泵都有自己特定的特性曲线。Thereisacertaininterdependentchangerelationshipbetweeneac