shaftless screw conveyor
Shaftless auger has no central shaft, the conveyed material will not tangle or stick, residues and pulper residue can be easily transported, can handle sticky, sticky, wet and lumpy materials, the output is 1.5 times or more than the shafted auger.
Conveying capacity: 1.4-458m³/h
Conveying length: ≤70m
Inclination angle: ≤25°
Application scenarios: It can be used in food processing plants, beverage processing plants, waste treatment plants, paper mills, restaurants, etc.
Introduction of Shaftless Screw Conveyor
Shaftless screw conveyor, also called shaftless auger, adopts a centerless design, which provides a non-clogging conveying surface, eliminates the accumulation of viscous materials, and makes it easier to convey materials that are difficult to convey, especially suitable for conveying Small, viscous, wet and lumpy materials, due to the fully enclosed shaftless screw conveyor, can achieve a structure that is resistant to steam and odor, and has been successfully used in the chemical, food, mineral processing and wastewater treatment industries for conveying from Bulk solids from centrifuges, filter presses or mixers.
Since the shaftless screw conveyor has no central shaft support, the contact area between the conveying screw and the material is reduced, and the friction force is reduced. Generally, horizontal conveying is selected, and the inclined conveying angle is preferably not more than 25°.
Features and Benefits
1. The conveyed materials will not be tangled or stuck: because there is no intermediate bearing, it has special advantages for conveying belt-like, viscous materials, and easily entangled materials, which can avoid material blockage.
2. Large conveying capacity: The conveying length of a single machine can reach 60 meters, and the conveying capacity is 1.5 times that of the traditional shaft screw conveyor of the same diameter.
3. Sealed and pollution-free: the tank cover of the gasket ensures that the tank body and the tank cover are sealed to avoid material leakage, no odor leakage, and prevent any gas medium from entering the production system, ensuring the sanitation of the conveying environment.
4. Not easy to damage: the thickness of the screw blade of the shaftless screw conveyor is more than 20mm, and the width of the blade is not less than 80mm, which is more wear-resistant and difficult to be twisted.
5. Flexible layout: single-point or multi-point feeding can be achieved, which can realize the effect of discharging from the bottom and discharging from the end.
Video
Technical parameters
The shaftless screw conveyors produced by Dahan Company are available in various models, and we can also customize them according to your needs.
Model | WLS150 | WLS200 | WLS250 | WLS300 | WLS400 | WLS500 |
Spiral diameter(mm) | 150 | 184 | 237 | 284 | 365 | 470 |
Outer diameter(mm) | 180 | 219 | 273 | 351 | 402 | 500 |
Incline degree(a) | 0 °-30 ° | 0 °-30 ° | 0 °-30 ° | 0 °-30 ° | 0 °-30 ° | 0 °-30 ° |
Max Length(m) | 12 | 13 | 16 | 18 | 22 | 25 |
Capacity(t/h) | 2.4 | 7 | 9 | 13 | 18 | 28 |
Motor | Model | L ≤ 7 | Y90L-4 | Y100L1-4 | Y100L2-4 | Y132S-4 | Y160M-4 | Y160M-4 |
Power kW | L ≤ 7 | 1.5 | 2.2 | 3 | 5.5 | 11 | 11 | |
Model | L>7 | Y100L1-4 | Y100L2-4 | Y112M-4 | Y132M-4 | Y160L-4 | Y160L-4 | |
Power kW | L>7 | 2.2 | 3 | 4 | 7.5 | 15 | 15Notes : The parameter above is just for reference, Model please inquiry us directly. We accept customization. |
Alternative designs
Material | Feed hopper | Auger | Drive |
carbon steel | flange connection ring | conventional | fixed speed |
carbon steel painted | Standard size | Shaftless | variable speed |
Stainless Steel Type 304 | cone | ribbon | Explosion-proof |
Stainless Steel 316L Type | square | dentate | water proof |
Manganese steel | multiple | paddle | Special custom |
plastic | other | other | |
other |
Customized Models of Shaftless Screw Conveyors
Single shaftless screw conveyor: It is composed of 1 screw body and does not have mixing and stirring functions.
Double shaftless screw conveyor: It is composed of two screw bodies. The direction of rotation of the screw blades is reversed to avoid jamming. The conveying capacity is 1.5-2 times that of a single screw.
The difference between a shaft screw conveyor and a shaftless screw conveyor
gist | Shaftless Screw Conveyor | Shafted screw conveyor |
conveying material | Can be sticky, wet, block, ribbon, etc. without clogging | Suitable for conveying most dry granular and powdery materials |
Tilt angle | 0-25° | 0-90° |
Rotation speed | medium or low speed | support high speed |
Material filling rate | 35%-40% | 15%-30% |
How to choose a shaft screw conveyor and a shaftless screw conveyor?
The choice of shafted screw conveyor and shaftless screw conveyor mainly depends on the state of the material to be conveyed. The above is the selection reference table, I hope to help you.
Structure of Shaftless Screw Conveyor
Shaftless screw conveyor consists of shaftless screw blade, U-shaped helical groove, cover plate, lining plate, inlet/outlet port, discharge port and driving device.
Driving device: It is placed at one end of the screw conveyor. It adopts the form of direct connection between the motor reducer and the screw drive shaft. No coupling is required. It is easy to disassemble and maintain. The drive shaft can bear the load of bending distance and axial extrusion force at the same time.
Shaftless Spiral: The material is stainless steel or carbon steel.
Cover: Removable, easy to observe the material conveying condition and later machine maintenance.
Tank liner: The material is wear-resistant molecular polyethylene or 16 manganese, etc.
Inlet and outlet: There are two kinds of square and round. Generally, the form of inlet and outlet is determined by the user.
Application
Shaftless screw conveyors with shaftless design are used to handle municipal solid waste, sieves and floats, dewatered, thickened or conditioned sludge, packaged foods, creams or pastes, as well as meat, fish, fruit and waste from vegetable processing. Main application areas are: wastewater treatment, sugar mill waste, fish industry, solid waste treatment, fruit and vegetable processing plants, beverage industry, pulp and paper, chemical industry, general food industry, meat processing plants, slaughterhouses/slaughterhouses , restaurants, canteens and general catering.
Industry Solutions
1、garbage collection
Shaftless Screw Conveyor has a good effect when conveying sticky, clumping, clogging domestic waste, industrial waste or kitchen waste, without worrying about the entanglement and clogging of ribbon or cotton waste.
2. Sewage treatment
Shaftless Screw Conveyor is the best choice for conveying viscous dewatered sludge. The design without a central shaft can avoid sludge clogging, and the thickened screw design will not twist the screw due to excessive conveying resistance.
3. Paper slurry
Strictly speaking, the papermaking slurry contains many fibers and is highly viscous, which is easy to adhere to the pipe wall of the conveyor. The Shaftless Screw Conveyor has a removable groove cover, which can be easily disassembled for machine cleaning, and the pipe groove is designed without a central axis. The inner space is larger, and it is not easy to be blocked.
Layout of Shaftless Screw Conveyor
The arrangement of the shaftless screw conveyor is generally horizontal, or it can be inclined, but the inclination angle is generally not more than 25°.
Installation method: The company can provide hanging type; ground and hanging mixed type; mobile type, rotary type and turret type that can be rotated around the axis of the feed inlet.