Carbon Steel Trough Screw Conveyors

Hydroscrew Ltd, Fir Street, Cadishead, Manchester, M44 5AG, UK. Tel. +44(0)161 777 9290 Fax. +44(0)161 775 2145 email: info@hydroscrew.co.uk

Description

The modular Hydroscrew Trough Screw Conveyor system is highly versatile offering numerous solutions for conveying powdery or granular materials. CA Screw Conveyors are manufactured from carbon steel with a suitable surface finishing. They are made up from a U or V-shape trough that is equipped with at least one outlet spout, an end plate at each trough end, helicoid screw flighting welded on a centre pipe with a coupling bush at each end, two end bearing assemblies complete with shaft sealing unit, a certain number of intermediate hanger bearings depending on the overall length of the screw conveyor, and bolted trough cover sections. Furthermore, CA Trough Screw Conveyors are equipped with a gear motor that suits the application.
Depending on the material to be handled CA Trough Screw Conveyors come in a light, medium-heavy, or extra-heavy-duty design.
All types are available with ATEX, zone 22 certification.

Function

The light-duty version, CA-L, is mainly used to convey powders or granular materials in the production of pet-food, in the plastics industry, and in soap, washing powder and detergent processing. The medium-heavy-duty version, CA-P, is mainly used in animal feed milling, in wood processing, in the chemical industry, and in environmental technology for both municipal and industrial applications. The extra-heavy-duty version, CA-E, is mainly used in the cement / lime /gypsum, as well as in the mining industry.
According to the application various types of screws, inlet and outlet spout models are available.

Performance & Technical Features - Benefits

Powder-coated
Helicoid flighting welded on centre pipe
Trough in modular flanged sections in standard lengths
Flanged end bearing assemblies protected against material infiltration by shaft sealing units
Robust cast iron body flanged end bearing assemblies with externally positioned bearing units and manually adjustable packed gland seals
Square or rectangular outlet spouts with integrated drilled flanges according to our standards
Drive units mounted at inlet or outlet end:
Bare shaft
Direct compact gear motor drive
Direct gear motor drive with semi-elastic coupling
Offset gear motor drive with chain transmission
Offset drive with belt transmission

For light-duty version:

Splined shaft couplings (bolted couplings for special applications)
Intermediate cast or fabricated hanger bearings with greased or self-lubricating slide bushes

For medium-heavy-duty version:
Splined shaft couplings (bolted couplings for special applications)
Intermediate cast hanger bearings with greased or self-lubricating slide bushes

For extra-heavy-duty version:
Flanged shaft couplings
Intermediate steel or cast hanger bearings with slide bushes
Offset drive with belt transmission and with semi-elastic coupling

Options & Accessories

Bolted trough cover modules (end module with integrated inlet spout)
Square, rectangular or circular substitute/additional inlet/outlet spouts with or without connecting flange
Trough feet
Overflow hatches
Screws in various configurations (ribbon flight, paddles, others)
Special shaft seals (gas or air-purged, grease chamber, others)
Different drive configurations

For medium-heavy and extra-heavy-duty version only:
Screws made from special wear-resistant materials

ALL SCREW CONVEYOR TYPES ARE AVAILABLE ALSO WITH ATEX, ZONE 22 CERTIFICATION.