1. Screw conveyor
Principle:-
Using screw conveyor material is transported by
rotation of helical screws which moves material in
forward direction in tube from feed point to discharge
point.

2. Construction:-
 Consists of an U tube made up of steel. Two or more
tubes can be joined together for travelling material to
discharge point.
 Screw element:- contains spiral blades called as
flights. Made up of single sheet of metal twisted into
spiral shape. Flights are welded into central shaft
through hanger.

3.  Bavel gears:- Installed at the drive end and used for
maintaining speed and rotation for shaft.
 Hopper:- used for feed arrangement. Discharge point
is called as spout.

4. Screw conveyor

5. Working:-
 Working:-

6. Applications:-
 Conveying fine, pasty solids, abrasive and non
abrasive material.
 Can transport material with capacity of 280 m3/hr.
 Incorporated for in situ devices for
mixing,heating,cooling.

7. Advantages:-
 Operated at positive as well as negative pressure.
 Material can be conveyed horizontally as well as
vertically.
Disadvantages:-
 High power consumption.