| 摘要 |
<p>The invention relates to an apparatus for separating solid substances from a liquid and increasing the total solids of the separated solid substances. A shaftless spiral (3) is disposed to rotate in a substantially horizontally oriented casing (2). Between the infeed section (15) of the apparatus and the discharge section (29), a portion (21) of the casing is provided as a drainage device (7) which forms a rotating part of the casing. The drainage device is followed by a compaction section (23a) with a stationary casing. The discharge end (31) of the spiral reaches only a distance into the compaction section which is followed by a discharge section (29) with a discharge aperture (240). A mechanical counterpressure device (8) is disposed to close and open the discharge aperture. The major fraction of the liquid in the mixture of liquid and solid substances is removed by the drainage device (7). The separated solid substances are displaced by the spiral to the compaction section (23a, b), where the total solids is increased by compression of the substances between the end (31) of the spiral and the counterpressure device (8). Thereafter, they depart from the apparatus through the discharge aperture (24).</p> |
