Augers

An auger is a straight shaft or tube equipped with a helical surface along the axis of rotation.

The prototype of a screw or screw conveyor is the so-called "Archimedes' screw", which appeared long before our era and was used as a water pump.

Screw conveyors can be horizontal, inclined (if the angle of inclination is up to 45˚), and vertical (if the angle of inclination is over 45˚). As the degree of inclination increases, the efficiency of the conveyor decreases, which requires a significant increase in drive power. The decrease in efficiency can be overcome by increasing the speed or diameter of the screw.

As a rule, screw conveyors move materials up to 40 meters in length and 30 meters in height.

Screw conveyors are ideal for transporting dry and semi-liquid, powdery, small lumpy, dusty, and powder-like materials, and are more economically efficient compared to other transport devices based on belt, pneumatic, or aeromechanical mechanisms.

This type of conveyor is widely used in many industries, but has found the greatest popularity:

in the construction industry;
in agriculture;
in wastewater treatment plants;
in drilling wells;
in the coal industry;
in the food industry;
in plastic production;
in the pulp and paper industry;
in the chemical industry and other sectors.

When selecting and designing a screw conveyor, the following factors must be taken into account:
1) The type and condition of the material being transported, taking into account the particle size and density of the load.
2) The conveyor's capacity expressed in tons per hour, including the volume and speed of the material to be transported.
3) The distance and height to which the material needs to be moved.
4) The working temperature and feeding conditions of the material into the conveyor.