What are the signs that you can choose a pump for a well? In this article, you will get an idea about different market offerings and how to evaluate their advantages and disadvantages. Furthermore, you will know the correct installation and connection of the pumping equipment from ceme .
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What starts the selection of a pump for a well? We must determine the modality of his work. For constant water supply and periodic irrigation, the choice will be considerably different.
In this case, the requirements for water quality and suspended substance content are minimal. Water can be sampled almost at the lower level along with the silt that accumulates there.
Pay attention: the full pumping of water and mud will have a beneficial effect on the duration and the flow rate of the well. Removing sediments from the bottom will improve water filtration; in addition, the increased flow will wash the nearby areas of the aquifer.
The obvious choice is a drain pump: Its price does not exceed 3-4 thousand dollars; at the same time, high content of suspensions, including coarse fractions, is permissible. The drainage and faecal pumps are able to pump particles up to 30 millimetres in size.
Do drainage pumps have restrictions? Yes. They are associated with limited pressure, which flows directly from the impeller device: a rare drain pump is able to lift the water column by more than 20 meters.
Permanent water supply
Here the image is different. We need a sufficiently large head for a long time; at the same time, the water should be filtered already at the entrance: the entry of sand and coarse sediments into the water supply system from the well is extremely undesirable. The modern market can offer us different water pumping schemes.
This group of devices consists of an air-cooled electric motor and an auger, whose body, in fact, looks a lot like a shell of clams. The centrifugal impeller creates a high-pressure zone on the periphery of the cochlea; along its axis, on the contrary, a vacuum is created, which draws water through a pipe, or a rigid pipe lowered into a well.
What are the pros and cons of surface pumps?
It is a great performance and considerable pressure. The size of the pumping station is not limited. Increasing the diameter is the easiest way to increase engine torque.
Easy maintenance: The pumping station does not need to be raised to replace the packing gland or tighten the hose clamp.
The absence of stringent requirements for holding the case: Normally, only the terminal block on the motor housing is sealed.
A small maximum distance from the body of water: It is limited to seven to eight meters. In a deeper well, the vacuum created by the pump will not raise the water column: the maximum height of the column is related to atmospheric pressure.
The overpressure in an atmosphere corresponds to a water column of 10 meters. It is at this height theoretically that a surface pump can lift the water, creating an absolute vacuum inside the cochlea.