We are Team Shark, a group of Product Design Engineering students and as part of our uni course we've been given the challenge to design and build a water pump. The task is to design and manufacture a pump that could lift 5 litres of water up a height of 600mm in a time of 5 minutes or less. We've decided to make an Archimedes Screw and here's how we're getting on.
Step 1: Materials/ Tools Needed
Wooden dowel (27mm Diameter)
1mm thick sheet steel
1.5m steel rod (19mm Outer Diameter)
1.25m plastic downpipe (65mm Inner Diameter)
Bracket for downpipe
Gearbox (We used one out of a cheap drill)
Step 2: Calculations
Our results gave us 40 blades with a pitch of 30mm and we kept our angle flexible at this stage.
Step 3: Making Templates
In order to make the screw more efficient, we wanted all of the blades to be of equal size and pitch. To make the blades of equal size we simply cut a template out of wood by turning a cylinder of wood on a wood lathe, slicing it into discs then drilling through the centre.
For the pitch we created a template using a CNC machine. We know that a lot of people don't have access to a CNC machine so the discs can also just be bent into shape during the welding process using a hammer.