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Pneumatic flow control mechanism
OzShan posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi all, Below is my first build of a flow control device to operate a bank of single acting cylinders. It's built on top of Sariel's dual output worm drive gearbox. In this application when the motor runs forward, air is delivered through the near set of valves and black loop to the cylinders on the right. Running in reverse drives the other pair of valves to drain air through the grey loop. Each pair of valves are offset 180deg so they can never be open at the same time. This way it doesn't matter when you start, stop or change direction nothing can get stuck open. The shaft turns counter clockwise and the valves are on a spring return. I've seen mechanisms that drive double acting cylinders but not single acting. Any suggestions for other examples I might be able to learn from? (Ideally it would be a lot smaller but this was as compact as I could make it). Many thanks, OzShan.