extraction of water from the wells is carried out by dipping to a special pump.Submersible pumps for wells are different from those of self-priming, that they have a multi-tier system of water absorption.This fact leads to their high cost and complex operation mechanism.The pump is a small cylinder, which can transmit large volumes of water per hour.The principle of operation is that the engine due to its high speed and high power raise liquid from the bottom to the surface.The electric motor is cooled by the flow of water created for his work properly you need to properly calculate the required power.
All pumps for wells have documentation that indicates the permissible limits the speed of the water, so the diameter of the hole should match the diameter of the cylinder borehole pump.The pump head may be determined by a simple formula H = H1 + H2 + H3 + 20%, where H - is the desired pressure, H1 - distance from the ground to the water level in the well, H2 - distance from the earth's point to the poin
Today, pumps for wells can be bought as well as three-inch, and a ten in diameter.Pump capacity can range from 1 cubic meterup to 200 cubic metersat one o'clock.The better and more powerful pump, so it is more expensive and better.Therefore it is necessary to select a pump that is best suited to your case.A prerequisite is the installation of a downhole pump assembly of the check valve.This is to ensure that in the event of a power failure or shutdown of the pump, water does not go back into the well.Pumps for wells with a minimum differential voltage may not work correctly or completely break down.You also can not avoid the moment when the pump is running on "dry" if the water level in the well dropped or suction hose is above this level.
avoid such troubles can be in two ways.This is, firstly, to use a special float which is triggered at a critical level, whereby the pump is automatically turned off, and secondly, no control of the water level and for its movement.If water from wells does not rise up, pumping unit is also disabled.
Very often in suburban areas is not possible to install an electric generator, or connect the central electricity, so the submersible motor pump is not suitable.Let us consider another kind - hand pump for the well.Its operation is very simple, with a bit of physical effort, it is possible to obtain a sufficient amount of water.The demand for these pumps for wells is very low, so the price is much lower than on the submersible pump.Although in some cases this is the only option to get water on the site.
hand pump can extract water from the well to a depth of 7 meters and a depth of 15-30 meters.The average volume of uplifted water is 20-30 liters per minute at any depth.But the pump, which provides water rise from 30 meters, will be much more headroom and heavier than the pump, designed for 7-meter deep well.The manual pump can be useful in case a good electric purchase failed.