25-01-2012, 01:19 PM
Design of a Manually Operated Paper-Recycling Machine
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Introduction
Paper is one of the most important products ever invented by man. Widespread use of a written language would not have been possible without some cheap and practical material to write on. The invention of paper means that more people would be educated because more books would be printed and distributed.
Description of the Recycling Plant
The designed of a waste paper recycling plant included the determination of the volume of the refiner, hydropulper and head box and also the selection of a convenient material for the construction of the individual units. The bulk of the parts of the plant were fabricated using mild steel, this is because it is the easiest to be joined among all other metals.
The Head Box
This unit is made out of an 18" gauge flat sheet into a square tank. Its purpose is to ensure that a continuous flow of stock at constant velocity across the width of the machine is provided.
The Dryers
This unit consists of two hollow cylinders designed in the form of a roller, an external mild steel metal cylinder and an internal ceramic cylinder.
Conclusions
The development of a manually operated used paper-recycling machine is much cheaper than the automated recycling industries worldwide. The fabricated machine can serve dual purposes, it can be manned permanently at a stationary position or it could be shifted from one place to another as the case may be.
