氣力輸送機的動力源(風機、鼓風機、壓縮機);動力源或氣源是氣力輸送系統的主要組成部分。了解氣力輸送機有效輸(shu)(shu)送(song)(song)(song)稀相(xiang)或(huo)密相(xiang)材料所(suo)需的(de)(de)(de)氣(qi)流(liu)非(fei)常重(zhong)要。如果設置不當,可能會導致容量減少。必須對散裝固體(ti)和(he)輸(shu)(shu)送(song)(song)(song)管線(xian)進行仔(zi)細的(de)(de)(de)計算或(huo)實驗(yan),以(yi)確保正確估計從(cong)氣(qi)力(li)輸(shu)(shu)送(song)(song)(song)機通(tong)過管線(xian)的(de)(de)(de)總壓降。氣(qi)動(dong)輸(shu)(shu)送(song)(song)(song)線(xian)長度(du)和(he)彎曲:許(xu)多流(liu)程都(dou)經過修改,可能需要擴展以(yi)支(zhi)持容量的(de)(de)(de)增(zeng)加。通(tong)常會修改現有的(de)(de)(de)氣(qi)動(dong)管線(xian)以(yi)適應新設備的(de)(de)(de)運輸(shu)(shu)。這通(tong)常會導致生產能力(li)下降。氣(qi)動(dong)輸(shu)(shu)送(song)(song)(song)管道的(de)(de)(de)長度(du)和(he)彎曲增(zeng)加會增(zeng)加系統的(de)(de)(de)整體(ti)壓降,同時降低可用于輸(shu)(shu)送(song)(song)(song)固體(ti)的(de)(de)(de)壓力(li)。
氣(qi)力輸(shu)(shu)送(song)(song)(song)線可能(neng)只是問題的(de)一部分,然(ran)而,料斗和給料機通(tong)常在實(shi)現可靠的(de)氣(qi)力輸(shu)(shu)送(song)(song)(song)方面發揮著同樣重要(yao)的(de)作用。將(jiang)(jiang)固體輸(shu)(shu)送(song)(song)(song)到正壓(ya)氣(qi)動輸(shu)(shu)送(song)(song)(song)機中(zhong)需要(yao)一種密(mi)封裝置來(lai)抵抗管(guan)道中(zhong)的(de)壓(ya)力。對于低壓(ya)氣(qi)動輸(shu)(shu)送(song)(song)(song)機,旋(xuan)轉閥、固體泵(beng)和噴(pen)射器是常見的(de)選擇。對于高(gao)壓(ya)氣(qi)力輸(shu)(shu)送(song)(song)(song)機,可以(yi)使用發送(song)(song)(song)罐(guan),以(yi)及高(gao)壓(ya)密(mi)封旋(xuan)轉閥。其中(zhong)一些(xie)設(she)備(bei)控制固體排放到管(guan)道中(zhong)的(de)速率,因此是真正的(de)進料設(she)備(bei),而其他設(she)備(bei)僅(jin)提供壓(ya)力密(mi)封。旋(xuan)轉閥可用作進料器以(yi)提供密(mi)封,這一特性使得它(ta)們在將(jiang)(jiang)材料送(song)(song)(song)入高(gao)壓(ya)環境(jing)時(shi)非(fei)常有用。然(ran)而,通(tong)風(feng)至(zhi)關重要(yao),尤其是在處(chu)理(li)精致(zhi)材料時(shi)。如果不通(tong)風(feng),氣(qi)體將(jiang)(jiang)泄(xie)漏到進料斗中(zhong),導致(zhi)料斗出口處(chu)出現橋接問題。
氣力輸(shu)送固體泵由(you)三(san)個主要部(bu)(bu)件組成:入口/輸(shu)送部(bu)(bu)分(fen)、密(mi)封部(bu)(bu)分(fen)和排出部(bu)(bu)分(fen)。入口部(bu)(bu)分(fen)接受來自(zi)上游給料(liao)機或輸(shu)送機的材料(liao)。密(mi)封部(bu)(bu)分(fen)的設(she)計(ji)使得通(tong)過(guo)螺(luo)桿(gan)輸(shu)送的固體形成足夠(gou)長度和密(mi)度的塞子(zi),以(yi)提供必(bi)要的氣體密(mi)封,而不需要高固體壓力。通(tong)過(guo)保持(chi)較低的固相壓力,可以(yi)*大限度地減(jian)少螺(luo)桿(gan)扭矩和磨損(sun)。密(mi)封機構不依賴于(yu)機械公差(cha)或移動部(bu)(bu)件。如有必(bi)要,出料(liao)部(bu)(bu)分(fen)可設(she)計(ji)用于(yu)壓碎粘塞并將均勻(yun)的料(liao)流輸(shu)送至氣力輸(shu)送機。
有(you)時使用噴射器將固體從(cong)料(liao)斗出(chu)(chu)口排出(chu)(chu)到正壓氣(qi)動輸送管(guan)中(zhong)。動力空氣(qi)通過噴嘴膨(peng)脹,在吸(xi)入室中(zhong)形成真空并吸(xi)入大塊材料(liao)。然后夾(jia)帶的物質通過并排放到管(guan)道(dao)中(zhong)。注射器沒有(you)移動部件或內部機(ji)械(xie)裝置。