Describe working of screw conveyor with neat sketch.

Describe working of screw conveyor with neat sketch.
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1. A Screw conveyor consist of a continuous or broken blade helix or screw fastened to the shaft (or a pipe) 2. This helix or screw rotates in trough so that revolving screw advances the material. 3. This type of conveyor is used for handling material in the form of finely divided solids or pasty solids. 4. This conveyor can also be used as mixture or blender. 

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