| 摘要 |
<p>A sludge screw vacuum hydroextractor comprises a dewatepng device and a feeding device for the dewatepng device The dewatering device comprises a dewatering drum (300) and a combined screw rod provided therein A right hand screw thread conveying member (20) and a left hand screw thread conveying member (22) are provided in the combined screw rod m an alternating arrangement, and a back pressure plate (21 ) is provided in the combined screw rod, provided with a hole (211) for sludge through therein A drain hole (24) is provided in the drum wall, and a vacuum suction device (13) is provided at the drain hole In addition, a heater (14) isprovided in the lydroextractor for heating the sludge The hydroextractor is used for secondly dewatepng the sludge with about 80% water ratio, finally to attain to the sludge within 40% water ratio</p> |
