在密閉管(guan)道內(nei)，以鏈(lian)(lian)片(pian)為傳動(dong)(dong)構件帶動(dong)(dong)物(wu)(wu)(wu)料(liao)沿(yan)管(guan)道運動(dong)(dong)。當(dang)水平輸送(song)時(shi)，物(wu)(wu)(wu)料(liao)顆粒(li)(li)受到鏈(lian)(lian)片(pian)在運動(dong)(dong)方(fang)向(xiang)(xiang)的推(tui)力(li)(li)(li)。當(dang)料(liao)層間的內(nei)摩(mo)(mo)擦(ca)力(li)(li)(li)大于物(wu)(wu)(wu)料(liao)與管(guan)壁的外摩(mo)(mo)擦(ca)力(li)(li)(li)時(shi)，物(wu)(wu)(wu)料(liao)就隨鏈(lian)(lian)片(pian)向(xiang)(xiang)前運動(dong)(dong)，形(xing)成穩定的料(liao)流(liu)；當(dang)垂直(zhi)輸送(song)時(shi)，管(guan)內(nei)物(wu)(wu)(wu)料(liao)顆粒(li)(li)受鏈(lian)(lian)片(pian)向(xiang)(xiang)上推(tui)力(li)(li)(li)，因為下部給料(liao)阻止上部物(wu)(wu)(wu)料(liao)下滑(hua)，產生了(le)橫向(xiang)(xiang)側壓力(li)(li)(li)，所以增強了(le)物(wu)(wu)(wu)料(liao)的內(nei)摩(mo)(mo)擦(ca)力(li)(li)(li)，當(dang)物(wu)(wu)(wu)料(liao)間的內(nei)摩(mo)(mo)擦(ca)力(li)(li)(li)大于物(wu)(wu)(wu)料(liao)與管(guan)內(nei)壁外摩(mo)(mo)擦(ca)力(li)(li)(li)及(ji)物(wu)(wu)(wu)料(liao)自重時(shi)，物(wu)(wu)(wu)料(liao)就隨鏈(lian)(lian)片(pian)向(xiang)(xiang)上輸送(song)，形(xing)成連續料(liao)流(liu)。
