Mechanism Ideas for: Rotary Action-input fuel tank Suction Pump?

[Hisham Maalik]

I am trying to come up with a design for a handheld pump used to suck/siphon/extract diesel from a car's tank. There's definitely going to be a pipe dipping into the fuel tank, and there's definitely going to be a human manually operating the pump.

I'm trying to think of a mechanism that would transform rotary action input, (like a rotatable lever) into suction force that would pull the diesel in the fuel tank into the pipe. But I can't think of anything lol.

Any ideas? TYSM

 

[zeusfaber]

If it needs to be rotary, try Googling "flexible vane pump" or "flexible impeller pump". That's a comfortably low-tech approach to the job.

You mentioned the word "siphon". If you have the height difference available, another search term might be "jiggle siphon". Usually more effective than it is rotary though.

A.