How does a pump get water from a low low elevation to a higher elevation.
To understand the working of a hand pump, you have to understand the working of a basic pump. Pumps work by creating a difference in pressure ( in this case of water). A sort of vacuum is created at the top of the pipe while water is present at the lower end. There is a difference in pressure hence water rushes to the top-end of the pump from where we get water. This vacuum is created by the mechanics in the electrical pump. Regards -M.S P.S : Please select as 'best answer' if you like my answer...
The simplest form of water pump is a plastic spiral where the outermost spiral dips under the water and out as it rotates. The spiral can be driven by attached paddles if the water is flowing. As the water progresses down smaller spirals the pressure increases. The water exits through a rotating coupling at the centre of the spiral. A single stage pump can only raise water 15 feet (1 atmosphere) A windmill is a good example of a simple pump where a lever moves up and down, A valve closes at the bottom of a tube on the up stroke and raises the water by the length of the stroke. This water opens a second valve near the top of the tube as soon as the upstroke starts and the water is pushed up. This pump does not work by creating a vacuum. On the downstroke the upper valve closes due to the raised water pushing on it, and also due to its own weight, and the lower valve opens from the water below pushing on it as the cylinder descends. At the end of the downstroke the valve closes under its own weight and the weight of the water above it and the cycle repeats To raise water higher than 15 feet using a windmill, it is necessary to install a small tank at, say 14 feet, with a second lower and upper valve in a tube. The first stage pump fills the tank which the second stage pump then lifts another 15 feet, This process can be repeated until the water reaches the surface, but a bigger windmill will be needed to power multiple pumps
