Ekobots - Archimedes screw

thingiverse

This is an illustration model of Archimedes' screw. "Archimedes' screw, also called the Archimedean screw or screwpump, is a machine historically used for transferring water from a low-lying body of water into irrigation ditches. Water is pumped by turning a screw-shaped surface inside a hollow pipe." Today is still used as a pump, in its original form in Egypt, and how small electric hydro generator in some engineering applications. this text above are a extract of the Wikipedia:wiki article: Archimedes' screw Caution this model is very dangerous for children under 8 years, see intructions News Version: V1.001 - 05/13/2015 - Corrected interference of the screw with the support. Versions V1_001. uploaded. source of data: Rorres, Chris: "The turn of the Screw: Optimum design of an Archimedes Screw", ASCE Journal of Hydraulic Engineering, Volume 126, Number 1, Jan.2000, pp. 72–80. Instructions Archimedes screw Instructions Warning: This scaled model is not a toy, it is inappropriate for children, the parts are small and fragile, very easy to be broken and can cause fatal injuries if aspirated by children. Please look intohttp://en.wikipedia.org/wiki/Toy_safetyhttp://en.wikipedia.org/wiki/Home_Safety_Council Use glue to attach the handle crank The ideal rotation is very slow, only 20 to 50 rpm