具體參數

隨著現代工(gong)(gong)(gong)業的興(xing)起，以混(hun)(hun)凝(ning)土(tu)(tu)為主(zhu)材料的建設方式已(yi)經成為了建筑業施(shi)(shi)工(gong)(gong)(gong)的主(zhu)要構造之一(yi)，在各種工(gong)(gong)(gong)程施(shi)(shi)工(gong)(gong)(gong)建設中(zhong)占據了很大的比例(li)，使得混(hun)(hun)凝(ning)土(tu)(tu)機械(xie)的發展經久不衰(shuai)，且有越演(yan)越烈的形(xing)勢(shi)。拖式混(hun)(hun)凝(ning)土(tu)(tu)泵，簡稱拖泵，是(shi)各種混(hun)(hun)凝(ning)土(tu)(tu)機械(xie)中(zhong)的一(yi)種，用于混(hun)(hun)凝(ning)土(tu)(tu)施(shi)(shi)工(gong)(gong)(gong)中(zhong)的輸送和澆注工(gong)(gong)(gong)作。

拖泵分類選型

37千(qian)(qian)(qian)(qian)瓦(wa)(wa)（目前國(guo)內標準混凝(ning)土(tu)泵，37千(qian)(qian)(qian)(qian)瓦(wa)(wa)以下為細(xi)石(shi)砂漿泵）、45千(qian)(qian)(qian)(qian)瓦(wa)(wa)、55千(qian)(qian)(qian)(qian)瓦(wa)(wa)、75千(qian)(qian)(qian)(qian)瓦(wa)(wa)、90千(qian)(qian)(qian)(qian)瓦(wa)(wa)、110千(qian)(qian)(qian)(qian)瓦(wa)(wa)、130千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴(chai)油）、132千(qian)(qian)(qian)(qian)瓦(wa)(wa)、162千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴(chai)油）、174千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴(chai)油）等。

選擇多大(da)電機(ji)混凝(ning)土泵，首先要考慮變壓(ya)器容量(liang)，其次考慮距(ju)離混凝(ning)土泵的遠近和線徑大(da)小(xiao)，以免(mian)壓(ya)降過(guo)(guo)大(da)造成電流增高或跳閘(zha)停機(ji)，過(guo)(guo)大(da)功率造成成本增加和使用不(bu)便。電機(ji)過(guo)(guo)小(xiao)，同(tong)時也滿足不(bu)了工程需要。

混(hun)凝(ning)土(tu)輸送泵功(gong)率、混(hun)凝(ning)土(tu)輸送泵出口壓力、混(hun)凝(ning)土(tu)輸送泵輸送量之間的關系

一(yi)(yi)臺(tai)混凝土輸(shu)送泵的(de)(de)電(dian)機功率(lv)是決定出口(kou)壓(ya)(ya)力(li)和(he)輸(shu)送方量的(de)(de)前提條件，在電(dian)機功率(lv)一(yi)(yi)定的(de)(de)情(qing)況(kuang)下，壓(ya)(ya)力(li)的(de)(de)升(sheng)高必將使輸(shu)送量降低(di)；相反，降低(di)出口(kou)壓(ya)(ya)力(li)，將會使輸(shu)送量增加。

為了(le)保(bao)證混凝(ning)土輸(shu)(shu)(shu)送(song)(song)泵既(ji)要有(you)較大(da)輸(shu)(shu)(shu)送(song)(song)量(liang)(liang)(liang)，又(you)能有(you)一定的(de)(de)(de)(de)出口壓力(li)和與之相匹配的(de)(de)(de)(de)經濟功(gong)(gong)率，在混凝(ning)土輸(shu)(shu)(shu)送(song)(song)泵的(de)(de)(de)(de)設計中，大(da)都采(cai)用(yong)了(le)恒功(gong)(gong)率柱塞泵；即恒功(gong)(gong)率值選定后，當出口壓力(li)升高(gao)時(shi)，油泵輸(shu)(shu)(shu)出排量(liang)(liang)(liang)會自動降低(di)，達到與功(gong)(gong)率設計相對應(ying)的(de)(de)(de)(de)值；如果既(ji)要達到出口壓力(li)高(gao)，又(you)想得到輸(shu)(shu)(shu)送(song)(song)量(liang)(liang)(liang)大(da)的(de)(de)(de)(de)目的(de)(de)(de)(de)。惟一的(de)(de)(de)(de)途徑就是(shi)增加(jia)電機功(gong)(gong)率。

因此，在(zai)國家新標(biao)準中，引用了(le)混(hun)凝(ning)土(tu)輸(shu)(shu)送(song)(song)泵的(de)(de)(de)(de)能(neng)(neng)力(li)(li)(li)(li)指數(shu)概念（以(yi)MPa·m3/h為度量單位）；即混(hun)凝(ning)土(tu)輸(shu)(shu)送(song)(song)泵的(de)(de)(de)(de)實(shi)(shi)際(ji)出口(kou)壓力(li)(li)(li)(li)與每小(xiao)時(shi)實(shi)(shi)際(ji)輸(shu)(shu)送(song)(song)量之乘積(ji)，該值越(yue)大(da)(da)，其能(neng)(neng)力(li)(li)(li)(li)指數(shu)也(ye)越(yue)大(da)(da)，電機(ji)的(de)(de)(de)(de)功(gong)率(lv)也(ye)將(jiang)越(yue)大(da)(da)，由此實(shi)(shi)現大(da)(da)排(pai)量、高(gao)揚程的(de)(de)(de)(de)目的(de)(de)(de)(de)。科(ke)尼樂公(gong)司在(zai)設計時(shi)，還采用了(le)高(gao)低壓切換的(de)(de)(de)(de)功(gong)能(neng)(neng)設計，以(yi)滿足(zu)不同(tong)的(de)(de)(de)(de)施(shi)工(gong)要(yao)求，在(zai)經濟狀態下，又能(neng)(neng)產生較(jiao)大(da)(da)的(de)(de)(de)(de)輸(shu)(shu)送(song)(song)量，或者(zhe)以(yi)相同(tong)的(de)(de)(de)(de)電機(ji)功(gong)率(lv)，產生較(jiao)高(gao)的(de)(de)(de)(de)出口(kou)壓力(li)(li)(li)(li)。