Homeliness, Tools and equipment
Pumps for wells, their technical characteristics
The extraction of water from the well is carried out by immersing a special pump there. Submersible pumps for wells differ from self-priming pumps in that they have a multi-stage suction system. This fact causes their high cost and complex mechanism of work. The pump is a small cylinder that can flow huge amounts of water per hour. The principle of operation is that the engine, due to its high speed and high power, lifts the liquid from the depth to the surface.
All well pumps have documentation that specifies the permissible rates of water velocity, so the diameter of the well should correspond to the diameter of the cylinder of the downhole pump. The pump head can be determined using the simple formula H = H1 + H2 + H3 + 20%, where H is the required head, H1 is the distance from the earth's surface to the water level in the well, H2 is the distance from the earth's point to the water supply point in the house, H3 - water pressure pressure, and 20% - allowance for error and resistance in the pipe. Thus, the pressure created depends on the distance between the house and the well.
You can avoid such troubles in two ways.
Very often in the suburban areas there is no possibility to install an electric generator or connect the central electricity, so the submersible electric pump will not work. Consider another type - a hand pump for a well. The principle of his work is very simple, with some physical effort, you can get enough water. Demand for these pumps for wells is very low, so the price for them is significantly lower than for a submersible pump. Although in some situations this is the only option to get water on your site.
A hand pump can extract water from a well depth of 7 meters or a depth of 15-30 meters. The average volume of lifted water is 20-30 liters per minute from any depth. But a pump that provides a water lift from 30 meters will be much larger and heavier than a pump designed for a 7-meter deep well. A hand pump can come in handy if a good electric pump is not available.
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