Description
Shaftless Screw Conveyor Description
DLS shaftless screw or screw conveyors are an alternative.The concept of traditional shaft screw conveyor. Material conveyed by extra heavy duty shaftless screw sliding on the inner low friction, wear resistant lining chute housing. u-slots, they are longitudinally split, made of carbon steel or available in 304 l / 316 l stainless steel, including appropriate surface treatment. Manufactured parts other than screws, of which it is super heavy and medium heavy.
The cross section of the lower part of the groove is slightly wider than side channels to allow for lining insert the lower slot part. After assembly the lining of the slot is held in place by the upper slot side channel.
There is a vertical or flush type outlet at one tank end. On the drive end, the screw conveyor is equipped with an end plate for securing.the end bearing assemblies have threaded flange couplings. The installed drive unit is suitable for the application. ssc can be obtained from access to open sinks from above (standard), or through inlet spouts in bolted slot covers (optional), or from the side special side air inlet in the trough loading area (optional).
Shaftless Screw Conveyor Structure
Shaftless screw conveyor is mainly composed of shaftless screw, U-shaped spiral groove, cover plate, lining plate, inlet and outlet, discharge outlet and driving device.
Shaftless Screw Conveyor Type
Single shaftless screw conveyor screw shaft, without mixing and stirring functions.
Twin Shaftless Screw Conveyor It adopts double screw blades with mixing and stirring functions. The two screw blades rotate in opposite directions to avoid material blocking. The conveying capacity is 1.5-2 times that of a single shaft.
Inclined Shaftless Screw Conveyor mainly used for conveying materials at a small angle of 25°.
Shaftless Screw Conveyor Technical
DLS
Model
Capacities
(m3/h)
Length
Speed
Size
00
150
300
(m)
(r/min)
A(mm)
B(mm)
B0(mm)
DLS200
2
1.4
0.9
10
20
200
310
270
DLS260
3.5
2.5
1.5
10
20
260
370
340
DLS320
9
6.5
4.1
15
20
320
430
400
DLS355
11.5
7.8
5.5
20
20
355
465
435
DLS420
15
11
7.5
20
20
420
530
500
DLS500
30
25
21
20
20
500
560
680
Shaftless Screw Conveyor Benefits
- Bolt slot cover
- Standard water inlet
- Inspection and overflow
- Drain Kit
- Slot feet
- Cleaning nozzle
- Different types of power transmission: direct drive, coupling drive, chain drive, belt drive
- Different linings available: with wear signal, bottom strip or base plate, white or black plastic
- Spiral guide rod
Shaftless Screw Conveyors VS Shafted Screw Conveyors
Conveying materials
Shaftless is suitable for conveying sludge, household garbage, grid slag and other viscous, entangled materials and massive materials. It is precisely because the design of the shaftless screw conveyor without a central axis has great advantages for these materials.
The shaft screw conveyor is suitable for conveying materials: powder, small particle materials, etc. If you convey viscous
materials such as sludge, it will stick to the inner tube shaft and blades, and the conveying block materials are easy to jam.
Conveying form
Shaftless screw conveyor is suitable for: horizontal conveying, and the large inclination angle should not exceed 20°, according to the actual usage.
The shaft screw conveyor is suitable for: horizontal conveying, inclined conveying, and vertical conveying.
Conveying capacity
Due to the use of shaftless, the single-machine conveying length of the shaftless screw conveyor can reach 60 meters, and the conveying capacity is 1.5 times that of the traditional shafted screw conveyor with the same diameter
Shaftless Screw Conveyors Application
- Throughput rates: up to 65 m³/h (38 cfm) for sludge, up to 25 m³/h (15 cfm) for screenings
- Drive power: 0.55 kW (0.75 HP) to 7.5 kW (10 HP)
- Trough and spiral manufactured from carbon or stainless steel 304L or 316L
- Trough liner in UHMWP
- Small footprint
- Odour-free operation
- High efficiency- Complete emptying
- Simple design (few components)
