Various models of submersible pumps are widely used in the organization of a water supply system, where a well is the source of water. Therefore, special requirements are imposed on their design, technical execution and materials for manufacturing.
Submersible pumps have a cylindrical body shape, and they have great performance. This they favorably differ from surface pumps. For the production of submersible pumps, only waterproof materials are used, and the housing is reliably sealed. Such pumps are advisable to use at depths of more than 8 - 10 m. It should be noted that if the pump is placed closer to the bottom, it will suck in the sand and silt. Another condition - the water level in the well should not be significantly reduced. Otherwise, the pump will start to work "for wear", without load, in "dry" mode. And this is a guarantee of a quick breakdown.
By its design, the pumps are divided into several types. Centrifugal models of deep pumps are well suited for wells. However, when selecting a pump, one should take into account such "raw" data: daily water demand for all family members and household needs. Such a calculation implies that all the tapping cocks are open at the same time( all family members use water and at the same time watering the infield).This will eliminate the possibility of water shortage at its maximum consumption.
When choosing a submersible pump, these "standards" are usually oriented:
- Consumption of about 5 liters of water per day per square meter.site meter;
- Daily water consumption of a family of three people - within 500 liters;
- Remoteness of the well from the house( length of the water pipe);
- The height difference( its difference) between the house and the well( if it is).
The value has two indicators - the length of the pipeline, as well as the difference in the heights of the pump sinking site and the highest point of draw-off( for example, cranes on the second floor of the building).It is believed that at 1 running meter of the length of the water pipe, "1 meter head is lost".For quality water supply, it is necessary to increase the performance of all pump characteristics.
The pump power calculation formula
The simplified formula for calculating the head is: H = Hp +( 0,2 x L) + 15
- H - required head( in meters);
- Hp - height difference between the top and bottom points of the system;
- L - water pipe length;
- 15 - recommended correction( "stock").
When installing the system, it is necessary to consider the following. Each owner himself decides, from which pipes and joints to collect the entire water supply system. However, it must be borne in mind that the walls of pipes must withstand the pressure of water that will be created by the pump. Therefore, it is recommended that you first choose the appropriate pump model, and only after that, based on its characteristics, be determined and with all other elements of the water supply.
