Hi-Flo Air Pump
thingiverse
I needed a syringe pump system that could move air at high prescribed flowrates - up to 10 L/min - to test some flowrate sensors, so I designed this one! It's specifically built for a pair of large 300 mL syringes, offering a 0.6L total capacity available on Amazon (https://www.amazon.com/Scientific-Dispensing-Measuring-Refilling-150ml-2pack/dp/B07NZLVMCP/ref=sr_1_7?dchild=1&keywords=300+ml+syringe&qid=1584807616&sr=8-7). This design uses a Nema 17 Stepper Motor with a GT2 pulley stage, which is adjustable and can accommodate various pulley combinations to increase or decrease the maximum flowrate / maximum pressure ratio.
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