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混凝土輸送泵采用電動機或柴油機驅動泵送系統，通過液壓系統恒功率控制自動調節混凝土輸送泵的輸送量，也可用手動控制來選擇混凝土輸送量。混凝土泵泵送系統主要由料斗、攪拌機構、混凝土分配閥、混凝土輸送缸、洗滌室以及主油缸等構成。

工作原理：

如(ru)圖(tu)所示，當液壓(ya)系(xi)統壓(ya)力(li)油(you)(you)進(jin)入一(yi)主(zhu)油(you)(you)缸(gang)(gang)(gang)時(shi)(shi)，活(huo)塞(sai)桿(gan)伸(shen)出(chu)，同(tong)時(shi)(shi)通(tong)過密封(feng)回路連(lian)(lian)通(tong)管(guan)(guan)的(de)壓(ya)力(li)油(you)(you)使另(ling)一(yi)活(huo)塞(sai)桿(gan)回縮。與(yu)主(zhu)油(you)(you)缸(gang)(gang)(gang)活(huo)塞(sai)桿(gan)相連(lian)(lian)的(de)混凝(ning)(ning)(ning)土輸送(song)(song)(song)活(huo)塞(sai)回縮時(shi)(shi)在(zai)輸送(song)(song)(song)缸(gang)(gang)(gang)內產生自吸(xi)(xi)作(zuo)用(yong)，料(liao)斗(dou)中的(de)混凝(ning)(ning)(ning)土在(zai)大(da)氣壓(ya)力(li)作(zuo)用(yong)和(he)攪拌(ban)葉片的(de)助(zhu)推作(zuo)用(yong)下通(tong)過滑閥(fa)吸(xi)(xi)入口被(bei)(bei)吸(xi)(xi)入輸送(song)(song)(song)缸(gang)(gang)(gang)。同(tong)時(shi)(shi)，另(ling)一(yi)主(zhu)油(you)(you)缸(gang)(gang)(gang)在(zai)油(you)(you)壓(ya)的(de)作(zuo)用(yong)下，推動(dong)主(zhu)油(you)(you)缸(gang)(gang)(gang)的(de)活(huo)塞(sai)桿(gan)伸(shen)出(chu)并同(tong)時(shi)(shi)推動(dong)混凝(ning)(ning)(ning)土活(huo)塞(sai)壓(ya)出(chu)輸送(song)(song)(song)缸(gang)(gang)(gang)中的(de)混凝(ning)(ning)(ning)土，通(tong)過滑閥(fa)輸送(song)(song)(song)口Y字管(guan)(guan)進(jin)入混凝(ning)(ning)(ning)土輸送(song)(song)(song)管(guan)(guan)。動(dong)作(zuo)完成(cheng)后，系(xi)統自動(dong)換向使壓(ya)力(li)油(you)(you)進(jin)入另(ling)一(yi)主(zhu)油(you)(you)缸(gang)(gang)(gang)，完成(cheng)另(ling)一(yi)次不(bu)同(tong)輸送(song)(song)(song)缸(gang)(gang)(gang)的(de)吸(xi)(xi)、送(song)(song)(song)行(xing)程。如(ru)此(ci)反復，料(liao)斗(dou)里的(de)混凝(ning)(ning)(ning)土就源源不(bu)斷地被(bei)(bei)吸(xi)(xi)入和(he)壓(ya)送(song)(song)(song)出(chu)輸送(song)(song)(song)缸(gang)(gang)(gang)，通(tong)過Y型管(guan)(guan)和(he)出(chu)口連(lian)(lian)接的(de)管(guan)(guan)道(dao)到達作(zuo)業點，完成(cheng)泵送(song)(song)(song)作(zuo)業。