Ekobots - Archimedes screw

thingiverse

This is an image model of Archimedes' screw. "Archimedes' screw, also known as the Archimedean screw or screwpump, was a machine historically used for lifting water from low-lying bodies of water into irrigation ditches. Water is pumped by rotating a screw-shaped surface inside a hollow pipe." It is still widely used today as a pump in its original form in Egypt and as a small electric hydro generator in various engineering applications. The above text is an excerpt from the Wikipedia article on Archimedes' screw. Caution: This model is extremely hazardous for children under 8 years old, see instructions. News Version: V1.001 - May 13, 2015 - Interference with the support screw was corrected in versions V1_001, which were uploaded. Source of data: Chris Rorres' article "The Turn of the Screw: Optimum Design of an Archimedes Screw" published in the ASCE Journal of Hydraulic Engineering, Volume 126, Number 1, January 2000, pp. 72-80. Instructions Archimedes Screw Instructions Warning: This scaled model is not a toy and is completely unsuitable for children, as the parts are small and fragile, easily broken, and can cause fatal injuries if inhaled by children. Please refer to http://en.wikipedia.org/wiki/Toy_safety and http://en.wikipedia.org/wiki/Home_Safety_Council. Use glue to attach the handle crank. The ideal rotation speed is extremely slow, only 20-50 rpm.