Introduction

The Stainless steel trough screw conveyors offer a variety of solutions for conveying or feeding powdery or granular materials. Designed for application in the food industry and in environMental technology,they are suitable for applications in which any contamination of the material handled has to be strictly avoided and where absolute cleanliness and perfect resistance to corrosion are required.Trough screw conveyors are also used in flour and animal feed milling, in plastics and chemicals, as well as in the pharmaceutical industry.

Trough screw conveyors

Technical Specification

Description

The modular Trough Screw Conveyor system is highly versatile. Stainless steel trough screw conveyors are manufactured from stainless steel with surface finishing grade suitable for the application . Fabrication of the troughs is carried out on machines ensuring perfectly smooth surfaces which is why material residue is reduced to the minimum. Trough screw conveyors are made up of a U or V shaped trough equipped with at least on outlet spout, an end plate at each trough end, helicoid screw flighting welded on a centre pipe with coupling bush at each end, two end bearing assemblies complete with adjustable shaft seal, a number of intermediate hanger bearings depending on the overall length of the screw conveyor, and bolted trough covers. Furthermore, our trough screw conveyors are equipped with a gear motor appropriate for the application.

Depending on the material to be handled, Trough screw conveyors come in a light or medium heavy -duty design.

Feature

Standard 304L or 316L stainless steel design

Troughs and screws in modular lengths

WAM standard polygonal or cylindrical inlet and outlet spouts

End bearing assemblies with externally adjustable shaft seal (stuffing box ,air or gas-purged, others )

Wide ranges of intermediate hanger beairngs appropriate for the application ( self-lubricating on request )

End flanges welded orthogonally on trough on special jigs.

End plates carrying flanged end bearing assemblies or closing -off-trough plates

Modular length helicoid screw flighting with square or variable pitch welded on centre pipe with shaft coupling at each end

Screws accurately balanced

Bearing assemblies entirely designed by WAM providing the most suitable model for each application.

Benefits

Perfectly smooth troughs for minimum material residue

WAM drive units with integrated end bearing assembly and adjustable shaft seal ( screws run perfectly balanced due to drive unit directly mounted on screw pipe; substitutes coupling or chain transmission with special drive mount )

Options

Modeular bolted trough cover with closed cell flange gasket

Trough drop bottom

Coupling, chain or belt transmission

Double pitch flight in outlet zone

Intermediate slide bearings

Intermediate hanger bearings with splined shaft

Inspection hatches with gasket

Both types are available with ATEX ,ZONE 22 certification.

Application