| 摘要 |
<p>Disclosed are a rotary cylinder type scroll pump, a sediment intake device, a sediment dredger and a dredging method. The rotary cylinder type scroll pump includes a rotatable retentive cylinder shell (3); multiple supercharging sections (6) arranged within the cylinder shell, with one of the sections arranged at the side of the pump inlet; and one conveying section (7) arranged between every two neighbouring supercharging sections, and every section being in fluid communication with the two neighbouring supercharging sections, wherein each supercharging section includes a scroll worm (8) which has a spindle (9) and a first scroll impeller (10) thereon, and the end edge of the first scroll impeller is fixedly engaged with the inner wall of the cylinder shell so as to form a spiral conveying space bounded by the inner wall, the outside surface of the spindle and the first scroll impeller; each conveying section includes a second scroll impeller (11) fixedly arranged on the inner wall of the cylinder shell, the end thereof extending toward the longitudinal axis of the cylinder shell; the cylinder shell rotates with the first scroll worm synchronously so that the conveying space volume of the spiral conveying space becomes gradually smaller.</p> |
