Shaftless Screw Conveyor Description

the conveyors are of robust and simple construction which means limited maintenance and low running costs. the conveyors are constructed in stainless steel and after machining completely pickled. Thus, an optimal durability of material is ensured.

Transportation takes place by a shaftless screw conveyors which is embedded in a wearing plate of plastic material. the screw is made of high-strength carbon steel with a stainless steel screw available as an option.

Can also be used to transport other materials such as wood chips to the stoker, or applesauce.

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

• Easy to access and clean;
• Low maintenance;
• Modular components can be easily adapted to various problems (resulting in extremely;
• Versatile conveyor for a variety of difficult materials and high volume applications);
• High self-cleaning.

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

Shaftless Screw (Spiral) Conveyors are specially designed for handling difficult, heterogeneous materials such as urban solid waste, screenings and floating matter, de-watered, thickened, conditioned sludge, packaged food, creams or pastes, as well as waste from: meat, fish, fruit and vegetable processing.

the main sectors of application are: wastewater treatment, sugarhouse rejects, fish industry, solid waste treatment, fruit and vegetable processing, beverage industry, pulp and paper, chemicals, food industry in general, meat processing plants, abattoirs/ slaughterhouses, restaurants, canteens, catering in general.


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Wuxi Dajiang Environmental Technology Co., Ltd.

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