Twin-Shaft Screw Conveyor

A Twin-Shaft Screw Conveyor(also known as a Double-Shaft Screw Conveyor)is an industrial bulk material handling equipment that efficiently transports,mixes,and agitates difficult-to-move materials by utilizing two parallel,counter-rotating helical screws.

Working Principle

It consists of two synchronized screw shafts(one left-handed and one right-handed)enclosed in a U-shaped trough or closed casing.Driven by a motor and gearbox,the two shafts rotate in opposite directions.This counter-rotation pushes material axially along the trough while the intermeshing blades create a gentle mixing and fluidizing effect,preventing clogging,bridging,and material segregation.

Key Features&Advantages

High Conveying Efficiency:Boasts 1.5–2 times the capacity of single-shaft conveyors,ideal for high-volume throughput.

Anti-Clogging Performance:The intermeshing screw blades break up agglomerates and ensure smooth flow of sticky,fibrous,or poorly flowing materials.

Integrated Mixing Function:Provides simultaneous conveying and gentle blending,ideal for homogenizing batches.

Robust&Durable Design:Bearings are mounted outside the casing for extended service life;available in carbon steel,stainless steel,or abrasion-resistant alloys.

Excellent Sealing:Fully enclosed structure minimizes dust emissions and contamination.

Flexible Installation:Operates horizontally or on an incline(up to 15°–30°).

Technical Specifications

Capacity:Up to 458 m³/h

Length:Standard up to 20–70 meters

Trough Width:200–600 mm

Materials of Construction:Carbon steel,SUS304/SUS316 stainless steel

Drive:Geared motor with optional variable frequency drive(VFD)

Applications

Widely used across industries for handling challenging materials:

Construction Materials:Cement,fly ash,sand,slag

Environmental&Waste:Sludge,municipal solid waste,biomass

Chemical&Food:Powders,granules,additives,flour,bran

Agriculture&Forestry:Sawdust,wood chips,straw,feed

Mining&Minerals:Coal,ore dust,mineral powders

Conclusion

The Twin-Shaft Screw Conveyor is a versatile workhorse for material handling systems.Its unique dual-screw design solves the common problems of clogging and poor mixing associated with single-screw conveyors,making it the preferred choice for efficient,reliable,and clean transport of a wide range of bulk materials.