Short quick pulser pump explaination

[Leonbartolome]

Hey Gaiatechnician, i like to explore differents kind of tecnologies for development projects in Sierra Tarahumara in México and I'm intrested in this pump. i saw all the videos and also the appropedia article and i understand everithing exept the thing that makes the bubbles come in into the washer... i understand the rest but how does that bubbles come in? i dont get it could you please post a video response with it or some pics... thanks a lot

[gaiatechnician]

@Leonbartolome I have a webpage at tripod, and a yahoogroup, you could try there? The washer? I forget what is in the video. I washed beets for animals and I washed river sand (to get rid of silt). In both cases, I piped air from the pump to the place where I did the washing. So just the air pressure from the pump made the bubbles, and the bubbles rising makes the water move.

I hope that helps. The appropedia page will change on May 15th. (Field tests)

Best of luck with your work.

Brian

[Massio89]

How does the air become "sucked down" into the lower chamber? Would the bubbles not rise rather than flow down the tube?

[gaiatechnician]

Bubbles rise at a certain speed in still water, (you can see this in some displays in pet shops and malls). in the pump, the water is flowing down at a faster rate than the bubbles can rise. So the bubbles have to descend!

[ozzirt]

By the same method that air is "sucked down" the plug hole when draining the bath when the water level gets low enough.

Gravity induces the water to fall at an accelerating rate 32ft/sec squared. This causes a localised lowering of pressure and the constant air pressure fills the void(s)

This is why the intake is located ideally about 1 pipe diameter below the surface of the water.

A 6 inch pipe is located about 6 inches +/- below the surface. The less fall, the closer to the surface.

[gaiatechnician]

@ozzirt good explanation. I actually put a shut off on one of mine later. It has a pipe going up through the center. (It is on the tripod pulser pump site). With the shutoff, you do not need to worry about the water going too high over the "plug hole".

[viking1au]

This needs better explanation.

[gaiatechnician]

Try the longer version then or better still, do a video response.