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負(fu)壓(ya)運(yun)送(song)風(feng)機(ji)有(you)時(shi)也(ye)采(cai)用(yong)容(rong)積(ji)式(shi)鼓(gu)風(feng)機(ji)。粉(fen)體(ti)輸(shu)送(song)泵(beng)在(zai)較(jiao)深(shen)的(de)真(zhen)空(kong)給(gei)定(ding)的(de)生(sheng)產(chan)線(xian)尺(chi)度(du)下(xia),需(xu)求(qiu)離(li)心(xin)風(feng)機(ji)具(ju)有(you)更(geng)高(gao)的(de)容(rong)量(liang)。粉(fen)體(ti)輸(shu)送(song)泵(beng)一(yi)般(ban)用(yong)於(yu)運(yun)送(song),容(rong)量(liang)是(shi)至(zhi)關(guan)重(zhong)要(yao)的(de)。這(zhe)個(ge)體(ti)係(xi)的(de)缺(que)點(dian)是(shi)PD鼓風機隻能消化非常少數的塵埃,所以一般需求一個過濾器接收器而不是旋風接收器。
一個典型的粉體輸送泵它(ta)適(shi)用(yong)於(yu)稀(xi)相(xiang)體(ti)係(xi),在(zai)粉(fen)體(ti)輸(shu)送(song)泵(beng)中(zhong),必(bi)須(xu)保(bao)持(chi)最(zui)小(xiao)運(yun)送(song)空(kong)氣(qi)速(su)度(du),在(zai)所(suo)有(you)關(guan)於(yu)核(he)算(suan)管(guan)道(dao)長(chang)度(du)上(shang)的(de)速(su)度(du)和(he)壓(ya)力(li)的(de)方(fang)程(cheng)中(zhong),都(dou)必(bi)須(xu)使(shi)用(yong)溫(wen)度(du)和(he)壓(ya)力(li)的(de)絕(jue)對(dui)值(zhi)。在(zai)自(zi)在(zai)空(kong)氣(qi)條(tiao)件(jian)下(xia),空(kong)氣(qi)的(de)高(gao)真(zhen)空(kong)階(jie)梯(ti)管(guan)道(dao)速(su)度(du)散(san)布(bu)粉(fen)體(ti)輸(shu)送(song)泵(beng)。假(jia)如(ru)真(zhen)空(kong)度(du)略(lve)高(gao)則(ze)需(xu)求(qiu)一(yi)步(bu)走(zou)到(dao)第(di)三(san)段(duan)的(de)管(guan)道(dao)。由(you)於(yu)穩(wen)定(ding)管(guan)徑(jing)曲(qu)線(xian)的(de)斜(xie)率(lv)跟(gen)著(zhe)壓(ya)力(li)的(de)下(xia)降(jiang)而(er)增(zeng)加(jia),因(yin)此(ci)在(zai)低(di)氣(qi)壓(ya)下(xia)需(xu)求(qiu)更(geng)多(duo)的(de)階(jie)梯(ti)管(guan)道(dao)。當(dang)壓(ya)力(li)值(zhi)很(hen)低(di)時(shi),在(zai)高(gao)真(zhen)空(kong)體(ti)係(xi)中(zhong)壓(ya)力(li)的(de)一(yi)個(ge)小(xiao)改(gai)變(bian)會(hui)導(dao)致(zhi)運(yun)送(song)空(kong)氣(qi)速(su)度(du)的(de)一(yi)個(ge)大(da)改(gai)變(bian)。
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