螺旋輸送機是一種利用電機帶動螺旋回轉，推移物料以實現輸送目的的機械。它能水平、傾斜或垂直輸送，具有結構簡單、橫截面積小、密封性好、操作方便、維修容易、便于封閉運輸等優點。螺旋輸送機在輸送形式上分為有軸螺旋輸送機和無軸螺旋輸送機兩種，在外型上分為U型螺旋輸送機和管式螺旋輸送機。有軸螺旋輸送機適用于無粘性的干粉物料和小顆粒物料.（例如：水泥、粉煤灰、石灰、糧等）而無軸螺旋輸送機適合輸送機由粘性的和易纏繞的物料。（例如：污泥、生物質、垃圾等）螺旋輸送機的工作原理是旋轉的螺旋葉片將(jiang)物(wu)料(liao)推移而進行螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)輸(shu)(shu)(shu)送(song)(song)(song)機(ji)輸(shu)(shu)(shu)送(song)(song)(song)，使物(wu)料(liao)不與螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)輸(shu)(shu)(shu)送(song)(song)(song)機(ji)葉片(pian)(pian)一起旋(xuan)(xuan)(xuan)(xuan)轉(zhuan)的(de)(de)(de)力(li)是物(wu)料(liao)自身重量和螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)輸(shu)(shu)(shu)送(song)(song)(song)機(ji)機(ji)殼(ke)對物(wu)料(liao)的(de)(de)(de)摩擦阻力(li)。螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)輸(shu)(shu)(shu)送(song)(song)(song)機(ji)旋(xuan)(xuan)(xuan)(xuan)轉(zhuan)軸(zhou)(zhou)上焊(han)的(de)(de)(de)螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)葉片(pian)(pian)，葉片(pian)(pian)的(de)(de)(de)面(mian)型根據輸(shu)(shu)(shu)送(song)(song)(song)物(wu)料(liao)的(de)(de)(de)不同(tong)有實體面(mian)型、帶式面(mian)型、葉片(pian)(pian)面(mian)型等型式。螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)輸(shu)(shu)(shu)送(song)(song)(song)機(ji)的(de)(de)(de)螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)軸(zhou)(zhou)在(zai)物(wu)料(liao)運動方向的(de)(de)(de)終端有止推軸(zhou)(zhou)承以隨物(wu)料(liao)給螺(luo)(luo)旋(xuan)(xuan)(xuan)(xuan)的(de)(de)(de)軸(zhou)(zhou)向反(fan)力(li)，在(zai)機(ji)長(chang)較長(chang)時，應加中(zhong)間吊(diao)掛軸(zhou)(zhou)承。