Screw Conveyor

| Controlled Mechanical Conveying for Bulk Solids

VOLDE Screw Conveyors are engineered for the enclosed and controlled transfer of powders, granules and bulk solids between storage and process equipment. From silo and hopper discharge to mixer, dosing and production line feeding, each conveyor is configured according to material characteristics, required capacity, conveying distance and plant layout.

Screw diameter, pitch, rotational speed and trough geometry are selected as part of the complete conveying design. Horizontal and inclined configurations, multiple inlet and discharge arrangements and different construction materials allow the system to be adapted to a wide range of bulk material handling applications.

• Ø114 / Ø139 / Ø168 / Ø219 / Ø273 / Ø323 / Ø406 mm screw diameters
• Horizontal and inclined conveying configurations
• Single or multiple inlet and discharge points
• Direct connection to silos, hoppers, mixers and process equipment
• Enclosed construction for controlled material transfer
• Screw pitch and speed selected according to capacity and material behavior
• Continuous conveying and controlled process feeding applications
• Carbon steel, AISI 304 and AISI 316 construction options

| Screw Geometry & Mechanical Design

Reliable screw conveying depends on matching the mechanical design to the behavior of the material. Bulk density, flowability, particle size, abrasiveness, tendency to compact and required throughput are evaluated to determine the screw geometry, operating speed and drive configuration.

Depending on the application, constant or variable-pitch screws can be used to control material loading along the conveyor. Drive arrangement, shaft and intermediate supports, bearings and sealing systems are selected according to conveyor length, operating conditions and material characteristics. For abrasive products, wear-resistant components can be incorporated into high-wear areas.

• Constant or variable-pitch screw configurations
• Application-specific screw speed and drive sizing
• Feed-side or discharge-side drive arrangement
• Carbon steel or stainless steel screw construction
• Wear-resistant options for abrasive materials
• Material-compatible bearing and sealing systems
• Intermediate support configurations for longer conveyors
• Reversible and bidirectional conveying options
• Inspection and maintenance access points
• Integration with weighing, dosing and process automation systems