Archimedes screw or Archimedes screw pump

Archimedes screw or Archimedes screw pump

Cross section of an Archimedes screw pump

 

 

 

 

 

 

 

 

 

 

The basic principle of an Archimedes screw

Is shown in the diagram above.  If the handle at the top was turned in an anti-clockwise direction it would draw the water up from the lower level to the top.

 

The Archimedes screw pump is an example of simple machine

Application that has survived the ages to fit diverse products in the modern era. Historians date the first evidence of Archimedes screw pumps being used hundreds of years before Archimedes was born, and it is so-named because tradition suggests it was invented by Archimedes of Syracuse (287-212 BC) natural philosopher and scientist. However, archaeological evidence has led others to posit its earlier invention in Assyria (modern day Iraq) or Egypt; Archimedes simply improved upon an earlier design.

 

Archimedes screw pumps represent

The combination of two common simple machines: the inclined plane and the cylinder. The plane wraps around the cylinder, making a common screw shape. The rotation of the Archimedes screw forces liquid or small materials upwards. This movement is intended to process liquid, irrigate, move corn, and many other applications.

 

The lowest portion of the screw pump just dips into the water

And as the cylinder is turned a small quantity of water is scooped up. The inclination of the cylinder is such that at the next revolution the water is raised above the next thread, whilst the lowest thread scoops up another quantity. The successive revolutions, therefore, raise the water thread by thread until it emerges at the top of the cylinder.

Archimedes hydro screw pump

Is believed to have been invented to remove water from the hold of Greek navy ships when Archimedes worked for his cuisine the king. The revolving screw-shaped blade inside an angled pipe was turned by a handle, scooping up water and carrying it to the top.

The Archimedes screw pump had been widely used to pump water from low-lying rivers for crop irrigation since Egyptian pharos times, as it is still used to date in the Nile delta in Egypt.

Use of Archimedes screw hydro pumps

Declined after the invention of steam power, combustion engine and electricity. Until then about a quarter of the word population used the Archimedes screw pump before the industrial revolution.

http://www.archimedeshydroscrew.com/archimedes-screw-pump/