Stacked Screw Sludge Dewatering Machine Chemical Plant Wastewater
Treatment Equipment Pig Farm Manure Sewage Sludge
First, the working principle of the screw-type sludge dewatering
machine
The structure and working principle of the snail sludge thickening
dewatering machine:
(Concentration part) The sludge enters the cylindrical cavity of
the laminated sludge dewatering machine through positive pressure
(pump or high-level self-flow), and is fully and effectively mixed
with the polymer flocculant solution under the action of the
stirring paddle to form a hard flocculation It moves slowly to the
upper part of the thickener cavity with the liquid level, and
enters the liquid inlet of the laminated sludge dewatering machine
through the liquid outlet. After the sludge is flocculated, the
clear liquid passes through the filter element composed of the
moving ring and the fixed ring (the relative movement of the moving
ring and the fixed ring forms a gap), and the dehydrator cavity is
discharged through the drainage device to realize the concentration
of the sludge.
(Dehydration part) The main body of the dehydrator is a filter
device formed by a fixed ring and a floating ring stacked on each
other, and the screw shaft runs through it. It integrates
concentration and dehydration. Each moving ring is embedded in the
middle of the two fixed rings, and the filter gap formed between
them and the pitch of the screw shaft gradually decrease from the
concentration part to the dehydration part. The inner diameter of
the fixed ring and the moving ring is the same as the helical
diameter of the screw shaft, and there is almost no wear during
operation; there is a back pressure plate at the end of the
dewatering section to generate internal pressure.
The main body of the stacked snail is installed at an inclination,
and the dehydration part is at a high position, and the whole
process of concentration and dehydration will have the effect of
gravity. The rotation of the screw shaft drives the moving ring to
make a circular motion, and the filter structure composed of the
fixed ring and the moving ring is in a moving state and is not easy
to be blocked. The water flows out from the filter seam, which has
the function of self-cleaning, and the sludge is continuously
pushed forward by the screw shaft. The sludge is transported to the
dewatering section after gravity concentration and small pressure
extrusion in the thickening section. In the process of advancing,
with the reduction of the filter seam and the screw pitch, the
concentration of the sludge continues to increase, and the back
pressure plate is blocked.
Under the action, internal pressure is generated, and a small
amount of water contained in the sludge is squeezed out and finally
becomes a mud cake.
| Model | abs dry mud
kg-DS/h | 0.20% | 1% | 2% | 3% | 5% |
| YWDL-101 | 6~12 | ~1.2m3/h | ~ 1m3/h | ~ 0.5m3/h | ~ 0.4m3/h | ~ 0.3m3/h |
| YWDL-102 | 12~25 | ~2.4m3/h | ~2m3/h | ~1m3/h | ~0.8m3/h | ~ 0.5m3/h |
| YWDL-201 | 9-20 | ~2m3/h | ~1.5m3/h | ~0.8m3/h | ~ 0.6m3/h | ~ 0.45m3/h |
| YWDL-202 | 18~40 | ~4m3/h | ~ 5m3/h | ~ 1.6m3/h | ~ 1.2m3/h | ~ 0.9m3/h |
| YWDL-251 | 20~50 | ~5m3/h | ~ 3.5m3/h | ~ 3m3/h | ~ 2m3/h | ~ 1m3/h |
| YWDL-252 | 40~ 100 | ~10m3/h | ~ 8m3/h | ~ 4m3/h | ~ 3m3/h | ~ 2m3/h |
| YWDL.301 | 30~60 | ~6.5m3/h | ~ 5m3/h | ~ 2.5m3/h | ~ 2m3/h | ~ 1.5m3/h |
| YWDL-302 | 60~120 | ~13m3/h | ~ 10m3/h | ~5m3/h | ~ 4m3/h | ~ 3m3/h |
| YWDL-351 | 70-150 | ~13m3/h | ~ 10m3/h | ~5m3/h | ~ 4m3/h | ~ 3m3/h |
| YWDL-352 | 90-180 | ~17m3/h | ~ 15m3/h | ~7.5m3/h | ~ 6m3/h | ~ 4.5m3/h |
| YWDL-401 | 40-200 | ~10m3/h | ~ 8m3/h | ~ 6m3/h | ~ 5m3/h | ~4m3/h |
| YWDL-402 | 80~400 | ~20m3/h | ~ 16m3/h | ~ 12m3/h | ~ 10m3/h | ~ 8m3/h |
| YWDL-403 | 120-600 | ~30m3/h | ~ 24m3/h | ~ 18m3/h | ~ 15m3/h | ~ 12m3/h |
| YWDL-404 | 100-800 | ~40m3/h | ~ 32m3/h | ~ 24m3/h | ~ 20m3/h | ~ 16m3/h |
