東(dong)莞市銳鑫(xin)機電有(you)限公司
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B棟401
具體參數
隨(sui)著現代工業的(de)興起,以混凝土為主材(cai)料的(de)建設方(fang)式已經成(cheng)為了(le)建筑業施(shi)工的(de)主要構造之一,在各種(zhong)(zhong)工程施(shi)工建設中(zhong)占據了(le)很大的(de)比例,使(shi)得(de)混凝土機(ji)械(xie)的(de)發展經久不衰,且有(you)越演越烈的(de)形勢。拖式混凝土泵(beng),簡稱拖泵(beng),是各種(zhong)(zhong)混凝土機(ji)械(xie)中(zhong)的(de)一種(zhong)(zhong),用于混凝土施(shi)工中(zhong)的(de)輸送(song)和澆注工作。
拖泵分類選型
37千(qian)(qian)(qian)(qian)(qian)瓦(wa)(目前國內標準混凝土泵(beng),37千(qian)(qian)(qian)(qian)(qian)瓦(wa)以(yi)下為(wei)細石(shi)砂漿泵(beng))、45千(qian)(qian)(qian)(qian)(qian)瓦(wa)、55千(qian)(qian)(qian)(qian)(qian)瓦(wa)、75千(qian)(qian)(qian)(qian)(qian)瓦(wa)、90千(qian)(qian)(qian)(qian)(qian)瓦(wa)、110千(qian)(qian)(qian)(qian)(qian)瓦(wa)、130千(qian)(qian)(qian)(qian)(qian)瓦(wa)(柴油(you))、132千(qian)(qian)(qian)(qian)(qian)瓦(wa)、162千(qian)(qian)(qian)(qian)(qian)瓦(wa)(柴油(you))、174千(qian)(qian)(qian)(qian)(qian)瓦(wa)(柴油(you))等。
選擇多大電機(ji)混(hun)凝土泵,首(shou)先要考(kao)(kao)慮變(bian)壓器(qi)容(rong)量,其次考(kao)(kao)慮距(ju)離混(hun)凝土泵的遠近(jin)和線徑大小(xiao),以(yi)免壓降過(guo)(guo)大造成電流增高或(huo)跳閘停(ting)機(ji),過(guo)(guo)大功率造成成本增加和使用不便。電機(ji)過(guo)(guo)小(xiao),同時也滿足不了工(gong)程需要。
混凝土(tu)輸(shu)送(song)泵(beng)功率、混凝土(tu)輸(shu)送(song)泵(beng)出口壓(ya)力、混凝土(tu)輸(shu)送(song)泵(beng)輸(shu)送(song)量之間的關系
一臺混凝(ning)土(tu)輸(shu)(shu)送泵的(de)(de)電(dian)機功(gong)率是決(jue)定出口(kou)壓力(li)和輸(shu)(shu)送方(fang)量的(de)(de)前提條件,在電(dian)機功(gong)率一定的(de)(de)情況下,壓力(li)的(de)(de)升高必將使(shi)輸(shu)(shu)送量降(jiang)低;相反(fan),降(jiang)低出口(kou)壓力(li),將會使(shi)輸(shu)(shu)送量增加。
為了保證混凝土輸(shu)送(song)泵(beng)既(ji)要有較大輸(shu)送(song)量(liang),又(you)能有一定的(de)出口(kou)壓(ya)力(li)和與之相匹配的(de)經濟功率,在(zai)混凝土輸(shu)送(song)泵(beng)的(de)設(she)計中,大都采用了恒功率柱塞泵(beng);即(ji)恒功率值(zhi)選(xuan)定后(hou),當出口(kou)壓(ya)力(li)升高時,油(you)泵(beng)輸(shu)出排量(liang)會自動降低,達到(dao)與功率設(she)計相對(dui)應的(de)值(zhi);如果(guo)既(ji)要達到(dao)出口(kou)壓(ya)力(li)高,又(you)想得到(dao)輸(shu)送(song)量(liang)大的(de)目的(de)。惟一的(de)途徑(jing)就是增(zeng)加電機功率。
因此(ci),在(zai)國家新標準中,引用(yong)了混(hun)凝土輸(shu)送(song)(song)泵(beng)的(de)(de)能(neng)力指(zhi)數(shu)概念(nian)(以MPa·m3/h為度量(liang)(liang)單位);即混(hun)凝土輸(shu)送(song)(song)泵(beng)的(de)(de)實際出口壓力與每(mei)小時(shi)實際輸(shu)送(song)(song)量(liang)(liang)之乘積,該值越大(da),其(qi)能(neng)力指(zhi)數(shu)也越大(da),電機的(de)(de)功率也將(jiang)越大(da),由此(ci)實現(xian)大(da)排(pai)量(liang)(liang)、高(gao)(gao)(gao)揚程(cheng)的(de)(de)目(mu)的(de)(de)。科尼樂公司在(zai)設計(ji)時(shi),還采用(yong)了高(gao)(gao)(gao)低壓切(qie)換(huan)的(de)(de)功能(neng)設計(ji),以滿(man)足不同(tong)的(de)(de)施工要求,在(zai)經濟狀態下,又(you)能(neng)產生較(jiao)大(da)的(de)(de)輸(shu)送(song)(song)量(liang)(liang),或者以相同(tong)的(de)(de)電機功率,產生較(jiao)高(gao)(gao)(gao)的(de)(de)出口壓力。