Screw Conveyor

Spiral conveyors are classified into axial and non axial types based on their structure and applicable material types, as well as U-shaped and tubular screw conveyors based on their appearance. The shaft screw conveyor is suitable for non viscous dry powder and small particle materials, such as cement, fly ash, lime, and grain. Its design center shaft and spiral blades rotate around the shaft to efficiently transport such materials. The shaftless screw conveyor is suitable for viscous and easily entangled materials such as sludge and biomass, and its shaftless design reduces the risk of material blockage. The U-shaped conveyor has a U-shaped groove, while the tube conveyor adopts a closed circular tube shape, suitable for more enclosed material conveying needs.

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conveying distance
≤20m
conveying capacity
90m³/h
Application field
Spiral conveyors are widely used in industries such as food, chemical, power, metallurgy, and coal mining charcoal
Applicable materials
Suitable for horizontal or inclined transportation of powdery, granular, and small block materials such as cement, fly ash, pesticides, titanium dioxide, pigments, etc., with material temperatures below 200 ℃

Product advantages

High conveying efficiency
The new suspended intermediate suspension bearing frame increases the material transportation space, reduces logistics resistance, and combines small diameter, high speed, and variable pitch design to ensure smooth, fast, and uniform feeding.
Flexible arrangement
The high-quality seamless steel pipe shell is connected by flanges, which can achieve continuous transportation at horizontal or large inclination angles. Directly connected to supporting equipment, no foundation required, easy to move and disassemble, fully utilizing space.
Diversified connection methods
Various connection methods can be used for import and export, such as flange connection, fabric installation connection, fabric installation suspension rod connection, universal joint connection, etc.
Reliable sealing
The anti-seepage device and improved process hole design prevent rainwater from infiltrating and causing material clumping and blockage.
No additional lubrication required
Using a new type of intermediate bearing material, it has the characteristics of reducing friction, wear resistance, and self-lubricating, without the need to add lubricating grease.
Specialized reducer
Design advanced customized reducers with small size, light weight, high torque, fast speed, no oil leakage, no noise, and equipped with anti slip structures, suitable for high inclination thrust transmission.

working principle

The working principle of a screw conveyor is based on the movement of materials and the rotation of the screw shaft:

The function of a spiral shape:When the screw shaft rotates, the material can only be pushed forward along the bottom of the groove by the blades due to its own gravity and friction with the conveyor groove wall, similar to a fixed nut translating along a rotating screw.

Sliding motion of materials: The transportation of materials in a conveyor is a sliding motion, and the movement of the material depends on the thrust of the material behind it.

Device layout:To keep the screw shaft in a favorable tension state, the drive device and discharge port are usually set at the same end of the conveyor, while the feed port is as close as possible to the tail of the other end.

Material transfer:The rotating spiral blades push the material for transportation, preventing the force of the material rotating with the blades from coming from the weight of the material itself and the frictional resistance of the casing on the material.

Blade design:The design of blades varies depending on the nature of the conveyed material, such as solid surface, belt surface, blade surface, etc.

Support and bearings:The screw shaft of the screw conveyor is equipped with a thrust bearing at the end of the material movement direction to withstand axial force. For longer machines, an intermediate suspension bearing needs to be installed to provide support..

Contact Information

Address
802, No. 35, Lane 1555, Jinshajiang West Road, Jiading District, Shanghai
Telephone
+86-021-69002362
Email
ocean.lau@winraychina.com
Fax
+86-021-69002372