Tube Screw Conveyor

Tube Screw Conveyor is a fully enclosed tubular bulk material conveying device designed for dust‑free,leakage‑free and clean material transportation.Different from open trough screw conveyors,this machine adopts a full circular pipe shell with completely sealed internal conveying space,making it the preferred equipment for powdery,fine granular,easily flying and environmentally sensitive materials.It realizes continuous,stable and quantitative material delivery through rotating spiral blades inside the closed tube.Suitable for horizontal,inclined and short vertical conveying routes,it is widely matched with dust removal systems,silo discharging lines,chemical processing,food production and building material industries,providing zero‑pollution material handling solutions for industrial clean production.

The working principle is based on axial spiral propulsion.Driven by the speed‑reducing motor,the precision‑manufactured spiral rotor rotates steadily inside the seamless steel tube.Bulk materials entering the feeding inlet are pushed forward uniformly by spiral blades.Under the constraint of the fully closed tubular cavity,materials will not scatter,float or overflow during transportation.The continuous rotating propulsion ensures even material flow and stable conveying volume without material stratification or segregation.After reaching the designated discharge outlet,materials are delivered to the next process equipment such as dust collectors,storage bins or packaging machines,completing fully enclosed cyclic conveying.

The tubular screw conveyor supports diversified material configurations to meet different industrial standards.Standard models adopt high‑quality carbon steel pipe with anti‑corrosion primer and topcoat treatment,suitable for conventional dust,cement powder,mineral granules and building materials.For corrosive,humid,food‑grade and pharmaceutical materials,304 or 316L stainless steel tubular structures are available with polished inner surfaces to prevent material adhesion,residue and cross‑contamination.The integral spiral blade is made of thickened steel plate with wear‑resistant welding treatment,improving durability and extending service life under long‑term abrasive working conditions.

Compared with traditional trough screw conveyors,the tube screw conveyor has obvious sealing and environmental advantages.Its fully closed tubular structure completely eliminates dust flying and material leakage,perfectly complying with strict industrial emission and clean workshop standards.The compact round pipe structure occupies smaller installation space and allows more flexible layout,supporting high‑angle inclined and vertical lifting that open trough conveyors cannot achieve.The integrated pipe body has high rigidity,no deformation and stable operation with low vibration and low noise.Equipped with variable frequency drive,it can adjust conveying speed accurately to realize quantitative feeding and automatic production matching.

In practical industrial operation,the tubular screw conveyor delivers excellent stable performance.The sealed structure effectively reduces material moisture absorption and avoids external impurity mixing,ensuring material quality consistency.Multiple feeding and discharging ports can be customized to realize single‑in multi‑out or multi‑in single‑out conveying,improving production line flexibility.The simplified internal structure reduces failure points,enabling 24‑hour continuous operation.Wearing parts such as bearings and shaft seals are easy to access and replace on site,greatly reducing maintenance time and operational costs.

Widely applied in dust collector ash conveying,chemical powder transportation,grain processing,plastic particle conveying,pharmaceutical production,cement and building material industries,Tube Screw Conveyor is a high‑sealing,high‑efficiency and eco‑friendly conveying equipment.With dust‑free operation,flexible installation and stable volumetric delivery,it has become standard supporting equipment for modern environmental protection engineering and clean industrial production lines.