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混凝土輸送(song)泵的閘板閥(fa)和S管閥(fa)都是分配閥(fa)的一(yi)種(zhong)形式(shi)，都是混凝土輸送(song)泵中的一(yi)個關鍵部件(jian)，那么(me)它們(men)有何(he)不同呢？

閘板(ban)(ban)閥(fa)(fa)的(de)(de)(de)(de)(de)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)輸(shu)(shu)送(song)(song)(song)(song)泵(beng)吸粗(cu)料能力(li)比較(jiao)(jiao)強(qiang)，應用(yong)較(jiao)(jiao)廣，但由于使(shi)用(yong)和(he)(he)保(bao)養(yang)(yang)情況(kuang)的(de)(de)(de)(de)(de)不同，閘板(ban)(ban)閥(fa)(fa)的(de)(de)(de)(de)(de)壽命(ming)有很(hen)(hen)大的(de)(de)(de)(de)(de)差(cha)異(yi)，有的(de)(de)(de)(de)(de)泵(beng)雖已泵(beng)送(song)(song)(song)(song)了2萬多個立(li)方(fang)(fang)的(de)(de)(de)(de)(de)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)，但還能正常使(shi)用(yong)，而(er)有的(de)(de)(de)(de)(de)卻(que)只(zhi)泵(beng)送(song)(song)(song)(song)了上千個立(li)方(fang)(fang)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)就得更(geng)換(huan)(huan)閘板(ban)(ban)，甚至要(yao)(yao)更(geng)換(huan)(huan)整個閘板(ban)(ban)閥(fa)(fa)，所以在施工(gong)時(shi)必須注意嚴格按操作(zuo)規(gui)程進行(xing)操作(zuo)，及時(shi)保(bao)養(yang)(yang)，保(bao)持潤滑油路的(de)(de)(de)(de)(de)暢(chang)通，適(shi)時(shi)調整各(ge)部的(de)(de)(de)(de)(de)間隙與(yu)及時(shi)修復損壞件。閘板(ban)(ban)閥(fa)(fa)構造簡單、維修方(fang)(fang)便、換(huan)(huan)向(xiang)(xiang)力(li)大、吸料性好，對(dui)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)的(de)(de)(de)(de)(de)要(yao)(yao)求不像S管閥(fa)(fa)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)泵(beng)那(nei)樣高，可泵(beng)送(song)(song)(song)(song)自拌混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)(適(shi)應于低(di)(di)塌落(luo)度(du)(du)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)的(de)(de)(de)(de)(de)泵(beng)送(song)(song)(song)(song))。但由于它的(de)(de)(de)(de)(de)密封(feng)受結構限制(zhi)，密封(feng)壓(ya)力(li)較(jiao)(jiao)低(di)(di)，在施工(gong)中(zhong)不可避免地需要(yao)(yao)用(yong)Y形管去連接混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)泵(beng)的(de)(de)(de)(de)(de)雙(shuang)缸體和(he)(he)輸(shu)(shu)送(song)(song)(song)(song)管，而(er)Y形管將產(chan)生較(jiao)(jiao)大的(de)(de)(de)(de)(de)壓(ya)力(li)損失。另外采(cai)用(yong)閘板(ban)(ban)閥(fa)(fa)輸(shu)(shu)送(song)(song)(song)(song)時(shi)，還要(yao)(yao)求在垂直輸(shu)(shu)送(song)(song)(song)(song)管道的(de)(de)(de)(de)(de)前方(fang)(fang)安裝一個水(shui)平輸(shu)(shu)送(song)(song)(song)(song)管段(duan)，其長度(du)(du)為混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)提升高度(du)(du)的(de)(de)(de)(de)(de)1／2。因為閘板(ban)(ban)對(dui)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)垂直方(fang)(fang)向(xiang)(xiang)產(chan)生的(de)(de)(de)(de)(de)流體壓(ya)力(li)所造成(cheng)的(de)(de)(de)(de)(de)回流有很(hen)(hen)大的(de)(de)(de)(de)(de)敏感性，形成(cheng)液壓(ya)阻力(li)，而(er)這種阻力(li)將會降低(di)(di)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)的(de)(de)(de)(de)(de)輸(shu)(shu)送(song)(song)(song)(song)高度(du)(du)，這也是(shi)閘板(ban)(ban)閥(fa)(fa)混(hun)凝(ning)(ning)(ning)土(tu)(tu)(tu)泵(beng)的(de)(de)(de)(de)(de)輸(shu)(shu)送(song)(song)(song)(song)高度(du)(du)受到(dao)限制(zhi)的(de)(de)(de)(de)(de)主(zhu)要(yao)(yao)因素之(zhi)一。

S管(guan)(guan)閥(fa)(fa)(fa)是(shi)(shi)目前國內外混凝土(tu)泵(beng)中(zhong)使用廣泛的(de)(de)一(yi)種管(guan)(guan)型分配閥(fa)(fa)(fa)，它置(zhi)于料(liao)斗內，一(yi)端與輸(shu)(shu)送(song)(song)(song)管(guan)(guan)相連，另一(yi)端通過油缸(gang)作(zuo)用可以擺動(dong)(dong)，工(gong)(gong)作(zuo)中(zhong)它與兩個(ge)混凝土(tu)缸(gang)交替對接(jie)，完成混凝土(tu)吸料(liao)和排料(liao)功(gong)能，它在工(gong)(gong)作(zuo)的(de)(de)可靠性(xing)是(shi)(shi)泵(beng)送(song)(song)(song)混凝土(tu)能順暢流動(dong)(dong)到達澆注點。其(qi)優點是(shi)(shi)S管(guan)(guan)閥(fa)(fa)(fa)安裝在集(ji)(ji)料(liao)斗內，可使用集(ji)(ji)料(liao)斗的(de)(de)離地高(gao)度降低，便(bian)于混凝土(tu)攪(jiao)拌運輸(shu)(shu)車向集(ji)(ji)料(liao)斗中(zhong)卸料(liao)，S型管(guan)(guan)閥(fa)(fa)(fa)本身就是(shi)(shi)輸(shu)(shu)送(song)(song)(song)管(guan)(guan)的(de)(de)一(yi)部分，使輸(shu)(shu)送(song)(song)(song)管(guan)(guan)道通暢，S型管(guan)(guan)閥(fa)(fa)(fa)結構簡單、耐用、磨(mo)損后易于更換，由于省去了輸(shu)(shu)送(song)(song)(song)管(guan)(guan)口處(chu)的(de)(de)Y形(xing)管(guan)(guan)，輸(shu)(shu)送(song)(song)(song)混凝土(tu)時不(bu)(bu)易堵管(guan)(guan)。S管(guan)(guan)閥(fa)(fa)(fa)有變(bian)徑和不(bu)(bu)變(bian)徑兩種形(xing)式(shi)，其(qi)中(zhong)不(bu)(bu)變(bian)徑管(guan)(guan)閥(fa)(fa)(fa)在工(gong)(gong)作(zuo)時閥(fa)(fa)(fa)體所受的(de)(de)沖擊小，阻力小，磨(mo)損小，混凝土(tu)在其(qi)中(zhong)流動(dong)(dong)順暢且加(jia)工(gong)(gong)容易。目前大(da)多數混凝土(tu)泵(beng)均采用不(bu)(bu)變(bian)徑的(de)(de)S型管(guan)(guan)閥(fa)(fa)(fa)。

三民重科的(de)混凝土輸(shu)送(song)(song)泵(beng)不(bu)管(guan)是微型的(de)、小(xiao)型的(de)、還是大型或帶攪(jiao)拌(ban)功能的(de)，都是采用S管(guan)閥(fa)設計研(yan)發制造的(de)，結(jie)構簡單，流道(dao)暢通，混凝土流動(dong)阻力小(xiao)，泵(beng)送(song)(song)壓力高，換向速度快(kuai)，噪音小(xiao)等，而(er)且S管(guan)閥(fa)比同規格的(de)閘板閥(fa)泵(beng)輸(shu)送(song)(song)高度更(geng)高，更(geng)適合各種工況的(de)需求(qiu)。