Product Introduction:
The stacked screw sludge dewatering machine follows the principles
of the same direction of power and water, thin-layer dewatering,
proper pressure and extension of the dewatering path, which solves
the problem of the easy clogging of previous generations of sludge
dewatering equipment and the inability to treat low-concentration
sludge and oily sewage. Technical problems such as mud, high energy
consumption, complex operation, etc., have achieved the goal of
high-efficiency and energy-saving dehydration. The dewatering
machine can realize high-efficiency flocculation under the
condition of fully automatic operation, and continuously complete
the sludge concentration and squeezing dewatering work, and finally
return or discharge the collected filtrate. It is widely used in
municipal sewage treatment projects and water treatment systems in
food, starch, oil, pharmaceutical, chemical, paper, leather and
other industries.
| Parameter / model | DNT-500 | DNT-1000 | DNT-1500 | DNT-2000 | DT-2500 | DNT-3000 |
| Filter - band width b(mm) | 500 | 1000 | 1500 | 2000 | 2500 | 3000 |
| Handling capacity Q(m3／h) | 5~10 | 10~20 | 20~30 | 30~40 | 40~60 | 60~80 |
| Outline dimension (BxLxH) | 1200x5160x2350 | 1700x5160x2350 | 2200x5160x2570 | 2700x5160x2570 | 3200x5300x2570 | 3700x5300x2570 |
Filter - belt running speed V(m／min) Concentrate motor power N1(KW) | 3.0～15(enriching section ),1.2～6.0( dewatering period ) |
| 0.55 | 0.55 | 0.75 | 1.1 | 1.5 | 1.5 |
| Dewatering motor power N2(KW) | 0.75 | 1.1 | 2.2 | 3.0 | 3.0 | 5.0 |
| Hecharge discharge height h(mm) | 1250 | 1250 | 1500 | 1500 | 1800 | 1800 |
| Wash water | Water consumption (m3／h) | 4.0 | 7.5 | 12.0 | 15.0 | 25.0 | 30.0 |
| Water gage(MPa) | ≥0.5 |
| Compressed air | Gas consumption (m3／h) | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.4 |
| Pressure(MPa) | ≥0.7 |
| Ineding water content(％) | 99.61/99.0 |
| Water content rate of mud cake (％) | 80/78 |
| Dry mud(kgds／h·m) | 110~130 |
| hydraulic load (m3／h·m) | 22~26/12~16 |
| Installation size (ww) | B1 | 1850 | 2450 | 2950 | 3450 | 3950 | 4450 |
| B2 | 1350 | 1950 | 2450 | 2950 | 3450 | 3950 |
| B3 | 1150 | 1750 | 2250 | 2750 | 3250 | 3750 |
| B4 | 950 | 1450 | 1950 | 2450 | 2950 | 3450 |
| B5 | 800 | 1300 | 1800 | 2300 | 2800 | 3300 |
| L1 | 5300 | 5300 | 5650 | 5650 | 5850 | 5850 |
| L2 | 250 | 250 | 250 | 250 | 300 | 300 |
| L3 | 4600 | 4600 | 4950 | 4950 | 5050 | 5050 |
| H1 | 200 | 200 | 250 | 250 | 250 | 250 |
| H2 | 150 | 150 | 150 | 150 | 150 | 150 |
| H3 | 300 | 300 | 300 | 300 | 300 | 300 |
Structure principle: Stacked screw sludge dewatering machine
integrates fully automatic control cabinet, flocculation and
tempering tank, sludge thickening and dewatering body and liquid
collecting tank in one. The main body is a filtering device formed
by stacking a fixed ring and a moving ring with a spiral shaft
passing through it. The front section is the concentration section,
and the rear section is the dehydration section. The filter gap
formed between the fixed ring and the moving ring and the pitch of
the screw shaft gradually decrease from the concentration part to
the dehydration part. The screw shaft continuously drives the ring
to clean the filter gap to prevent clogging. While the rotation of
the screw shaft pushes the sludge from the thickening section to
the dewatering section, and under the blocking action of the back
pressure plate, a great internal pressure is generated, and the
volume is continuously reduced to achieve the purpose of sufficient
dehydration.
Selection reference:
Comparison of advantages :
The stacked screw sludge dewatering machine can process oily
sludge, can process low-concentration sludge, can operate
continuously and automatically, use less water for cleaning, can
suppress secondary pollution, and is easy to maintain. The stacked
screw sludge dewatering machine produced by our company is a
small-volume combined machine with related equipment and control
cabinets set on the same base, so the installation is very simple,
and because the output power is low, it has the effect of energy
saving. The stack screw sludge dewatering machine can be
automatically operated by simple operation, and at the same time,
it can also be used for unattended continuous operation by
selecting the use of polymer flocculant (liquid product) dissolving
device; There is no clogging of the machine structure, so there is
no problem of recovery cleaning due to reduced capacity, and only
the sludge seeping from the dewatering section can be washed.
◆Comparison diagram of stacked screw sludge dewatering machine and
traditional dewatering machine◆
1. Widely applicable:
2. Suitable for sludge in municipal sewage, food, beverage,
chemical, leather, welding materials, papermaking, printing and
dyeing, pharmaceutical and other industries.
3. It is suitable for the dewatering of high and low concentration
sludge. When dewatering low-concentration (2000mg/L~) sludge, there
is no need to build thickening tanks and storage tanks, which
reduces construction costs and reduces the release of phosphorus
and the generation of anaerobic odors.
2. Simple design:
1. Compact design, the dehydrator contains an electric control
cabinet, a metering tank, a flocculation mixing tank and a
dehydrator main body.
2. It occupies a small space and is easy to repair and replace; it
is small in weight and easy to carry.
3. Not easy to be blocked:
1. It has the function of self-cleaning. There is no need to clean
in order to prevent clogging of the filter, reduce the amount of
flushing water and reduce the burden of internal circulation.
2. Good at dewatering oily sludge.
4. Low speed operation:
1. The rotation speed of the screw shaft is about 2~3 revolutions
per minute, with low electrode consumption.
2. Few failures, low noise and vibration, safe operation.
5. Simple operation:
1. Through the electric control cabinet, it is linked with the
bubble machine, the mud pump, the dosing pump, etc., to achieve
continuous unmanned operation for 24 hours.
2. The daily maintenance time is short and the maintenance
operation is simple.
6. Durable:
1. Almost all the machine body is made of stainless steel, which
can maximize the service life.
2. Only the screw shaft and the moving ring are the replacement
parts, and the service life is long.
