水泵是輸(shu)送(song)液體(ti)(ti)(ti)或(huo)使液體(ti)(ti)(ti)增壓(ya)的機械。它將(jiang)原動機的機械能或(huo)其他外部能量傳(chuan)送(song)給液體(ti)(ti)(ti)，使液體(ti)(ti)(ti)能量增加，主(zhu)要用來輸(shu)送(song)液體(ti)(ti)(ti)包括(kuo)水、油、酸堿液、乳化液、懸乳液和液態(tai)金屬等，也(ye)可輸(shu)送(song)液體(ti)(ti)(ti)、氣體(ti)(ti)(ti)混合(he)物以及含(han)懸浮固體(ti)(ti)(ti)物的液體(ti)(ti)(ti)。

水(shui)泵(beng)具有不(bu)(bu)同的用途，不(bu)(bu)同的輸送液體(ti)介質，不(bu)(bu)同的流量、揚程(cheng)的范圍，因此，它的結構(gou)形式當然也(ye)不(bu)(bu)一樣，材料也(ye)不(bu)(bu)同，概括起(qi)來，大(da)致可以分(fen)為城(cheng)市供水(shui)、污(wu)水(shui)系(xi)(xi)(xi)統(tong)、土木(mu)和建筑(zhu)系(xi)(xi)(xi)統(tong)、農業水(shui)利系(xi)(xi)(xi)統(tong)、電站系(xi)(xi)(xi)統(tong)、化工(gong)系(xi)(xi)(xi)統(tong)、石油工(gong)業系(xi)(xi)(xi)統(tong)、礦山(shan)冶(ye)金系(xi)(xi)(xi)統(tong)、輕(qing)工(gong)業系(xi)(xi)(xi)統(tong)、船舶系(xi)(xi)(xi)統(tong)。