對(dui)于輸送可(ke)(ke)(ke)能危害生(sheng)態環境的(de)(de)介質，泵可(ke)(ke)(ke)采用磁力(li)驅動密封結(jie)構的(de)(de)磁力(li)泵，提高機組的(de)(de)可(ke)(ke)(ke)靠性，擴大使用范(fan)圍(wei)。

螺桿泵(beng)的壓(ya)力(li)(li)是(shi)(shi)(shi)由(you)吸入腔(qiang)(qiang)內的壓(ya)力(li)(li)經過各(ge)級 密封(feng)(feng)腔(qiang)(qiang)增大到(dao)排出(chu)(chu)腔(qiang)(qiang)壓(ya)力(li)(li)，是(shi)(shi)(shi)逐漸建立的。壓(ya)力(li)(li)建立慢(man)，除了有低脈(mo)(mo)動(dong)(dong)的優(you)點(dian)外，聲(sheng)壓(ya)級也很低，并具(ju)有保證(zheng)輸送(song)介質完(wan)好，不會(hui)快速老化的優(you)點(dian)。在(zai)理論上螺桿泵(beng)是(shi)(shi)(shi)無脈(mo)(mo)動(dong)(dong)的，因為每個旋轉(zhuan)角排出(chu)(chu)相同(tong)體積的流(liu)量。實(shi)際上由(you)于(yu)加(jia)工的誤差和存在(zai)間隙以及工作長(chang)度不是(shi)(shi)(shi)密封(feng)(feng)腔(qiang)(qiang)的整倍數等原(yuan)因，還是(shi)(shi)(shi)會(hui)存在(zai)一些脈(mo)(mo)動(dong)(dong)。但其(qi)排出(chu)(chu)壓(ya)力(li)(li)的脈(mo)(mo)動(dong)(dong)遠遠小于(yu)其(qi)他(ta)類型泵(beng)。壓(ya)力(li)(li)脈(mo)(mo)動(dong)(dong)會(hui)引起整個裝置(zhi)的振動(dong)(dong)，是(shi)(shi)(shi)噪聲(sheng)增大的一個很重要的原(yuan)因。因此(ci)壓(ya)力(li)(li)脈(mo)(mo)動(dong)(dong)小這一重要特性，也使它優(you)于(yu)很多類型的泵(beng)，因而在(zai)液壓(ya)等系統中得到(dao)優(you)先(xian)采用(yong)。

螺桿泵由于沒(mei)有閥門(men)、脈(mo)動小(xiao)等原因，其水力損失小(xiao)，因此它通常和機械摩擦損失合在一(yi)起(qi)，不(bu)單獨計算。

螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)總體來說螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)輸(shu)送(song)介質(zhi)(zhi)平穩、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)排出介質(zhi)(zhi)低(di)紊流(liu)性、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)壓力(li)脈(mo)動(dong)微(wei)弱、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)機械振動(dong)小、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)噪聲低(di)、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)自吸(xi)性能、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)吸(xi)上性能好、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)較高轉速的(de)(de)(de)工(gong)作能力(li)、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)對介質(zhi)(zhi)的(de)(de)(de)粘度不(bu)敏感(gan)、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)結構簡單緊湊、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)外形尺寸較小、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)質(zhi)(zhi)量(liang)較輕、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)效(xiao)率高、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)工(gong)作可靠、螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)具(ju)(ju)(ju)有(you)(you)(you)壽命長及操作和(he)維(wei)修方(fang)便等特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)。因(yin)此螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)的(de)(de)(de)用(yong)途(tu)極為廣泛，綜合各類螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)選(xuan)型，僅從輸(shu)送(song)的(de)(de)(de)介質(zhi)(zhi)而言，它的(de)(de)(de)輸(shu)送(song)各種介質(zhi)(zhi)的(de)(de)(de)能力(li)超過其他(ta)所有(you)(you)(you)泵(beng)(beng)(beng)類的(de)(de)(de)輸(shu)送(song)能力(li)。對于同(tong)類型的(de)(de)(de)單螺(luo)(luo)桿(gan)(gan)泵(beng)(beng)(beng)，它們的(de)(de)(de)特(te)(te)(te)(te)(te)點(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和(he)應用(yong)范圍有(you)(you)(you)所不(bu)同(tong)。

經過(guo)對比螺桿泵(beng)更經久耐用。