Application
Shaftless screw conveyors for sludge and wastewater treatment plants
The problem
At a treatment plant, the material to be conveyed is the hardest case there is: sludge is sticky, screenings contain textile fibres and foreign objects, and the environment is chemically aggressive.
An ordinary screw with a centre shaft clogs. Fibrous material wraps around the shaft until the machine jams, and the intermediate bearings that support the shaft on long runs are additional blocking points — each one a place where the conveyor stops and someone has to open it by hand.
What we deliver
A shaftless screw: the flight is a load-bearing helical ribbon with no centre shaft, running on a wear liner in the trough.
Flights sized on the real behaviour of sticky material, not on a theoretical rate for free-flowing material.
A build that resists the aggressive environment of a treatment plant, with the wear liner selected for the abrasiveness of the screenings.
Route lengths and opening positions built to the layout of your plant.
Reference
For ALAVAL PROD we built a shaftless screw conveying system for sludge and screenings at their treatment plant, with the flights sized for sticky material and the build specified for the aggressive environment.
