How to choose a pump station for the device country water
The provision of a country house the water system was a necessary condition for a comfortable life. If the plot has its own well or wells, pumping station for questioning is reasonable and effective solution. Its presence is a guarantee of water supply in the required quantity to any home the point of demand. To select the right unit for your home, you should get acquainted with its structure and working principle.
The contents
Structure and purpose of the unit
In the suburban area of household pumping station is used with the sole purpose is to provide apartment building and the surrounding area with water from sources of any kind of artificial (well, borehole) or natural (river, pond). Water is provided either in a special storage tank, for example, for watering flower beds or garden trees, either directly to the traditional draw-points – faucets, taps, toilets, gas systems, washing machines.
Station average power can move 3 m?/h. Such quantity of clean water sufficient to provide a family of 3 or 4 people. Powerful units able to pass 7-8 m?/h Power comes from the power supply (~220 V) in manual or automatic mode. Some devices have electronic control.
The composition of the pumping station: 1 — expansion tank; 2 — pump; 3 — pressure gauge;
4 — pressure switch; 5 — anti-vibration hose
If you need to install, capable of operating without human intervention, suitable automatic pumping station with an expansion tank (hydropneumatic) tank. The composition looks like this:
- the hydropneumatic tank (tank volume on average from 18 l to 100 l);
- pump surface type motor;
- pressure switch;
- the hose connecting the pump and the tank;
- electric power cable;
- water filter;
- pressure gauge;
- check valve.
The last three devices are not required.
The scheme of installation of pump station for a country house, provided that the source of water (well, well) is next to the building
Many gardeners prefer pumping stations due to their easy installation and ready to work. Defense mechanisms of the human factor also plays a significant role. Before selecting a pump station will examine the mechanisms of its operation, the pump and the hydropneumatic tank, as well as the possibility of electronic control.
Pump
Design of pumping stations for village and country homes involve the use of surface pumps, featuring a view of the ejector – internal or external. This choice is based on the location of the axis of the device relative to the surface of the water. The pump power is different from 0,8 kW to 3 kW.
The choice of the model surface of the pump depends on the depth of the location of the mirror in the well
Models with built-in ejector
If the depth at which the water surface does not exceed 7-8 meters, we should look at models with built-in ejector. Pumping station water supply with such a device is able to pump water containing mineral salts, air and foreign elements with a diameter of 2 mm. in addition to low sensitivity, they have high pressure (40 m and more).
Pumping station Marina CAM 40-22, equipped with a surface pump with built in ejector
Water is pumped through rigid plastic pipe or reinforced hose, the diameter of which is set by the manufacturer. The end immersed in water, with non-return valve. The filter eliminates the presence in water of large particles. First start up of the pump should be performed according to the instructions. Part of the hose to the check valve and the internal cavity of the pump filled with water, filled through a special hole with a cork.
The most popular models with built-in ejector: Grundfos Hydrojet Jumbo from the company Dzhileks, Wilo-Jet HWJ ITSELF (Marina).
The device with external ejector
For boreholes and wells, the water of which is located below the level of 9 metres (and up to 45 m), suitable water pumping station, equipped with devices with external ejectors. The minimum borehole diameter of 100 mm. Connecting elements are two pipes.
Pumping station Aquario ADP-255A, equipped with a surface pump with external ejector
Installation of this type require particularly careful installation and careful treatment: water with exceeded content of impurities or breakdown strainer provoke the blockage and equipment failure. But they have one advantage – they are recommended to be installed if the pump station is located far from the wells, say, in the basement or in an outbuilding near the house.
To protect the pumping station it is set in the storage room or heated room on site
Many pump features – durability, noise level, price, stability — depend on the material of its body, which happens to be:
- steel, stainless steel looks beautiful, retains the properties of the water unchanged, but has a high noise level, besides the cost of this device above;
- iron pleased with the moderate noise level; the only disadvantage is the possibility of corrosion, so the choice should pay attention to the presence of the protective layer;
- plastic — pros: low noise, no rust in the water, cheap cost; the downside is shorter life spans than that of metal buildings.
The scheme of installation of the pumping station, equipped with a surface pump with external ejector
The choice of a hydropneumatic tank
Ranked of pumping stations to the private house, should be aware of the volume of the surge tank, which performs several important functions. It helps to regulate the water pressure. When you enable one or more points of demand, the amount of water in the system decreases, the pressure will drop, and when it reaches the lower mark (approximately 1.5 bar), the pump will automatically turn on and begin to fill it with water. It will be up until the pressure stabilizes (reaches 3 bar). The relay responds to the stabilization of the pressure and shuts off the pump.
In private homes, the volume of surge tanks for pumping stations depends on the amount of the water consumed in the system. The more water consumption – the greater the volume of the tank. If the tank has sufficient amount of water is rarely, respectively, the pump will also be involved rarely. Bulk tanks are also used as storage tanks for water during a power outage. The most popular model with parameters of 18-50 L. the Minimum amount necessary, when the country is occupied by one person, and all possible points of demand are in the bathroom (toilet, shower) and the kitchen (faucet).
Electronic control: dual protection
Is there any point in installing equipment with electronic control? To accurately answer this question, we need to consider the benefits of such stations.
Pumping station ESPA TECNOPRES with electronic control has an extra degree of protection
Functions, which are controlled by the electronic unit:
- prevention «dry run» — when the well water level falls, the pump automatically stops working;
- the pump responds to the operation of the draw-points – turns on or off;
- indication of the functioning of the pump;
- preventing frequent inclusions.
A number of models after the protection function «dry run» restarted in standby mode, the flow of water. The restart intervals vary from 15 minutes to 1 hour.
A useful feature is the gradual change speed of the electric motor, which is executed with the electronic Converter speed. Thanks to this feature, the water system does not suffer from hydraulic shock, this results in savings of electricity.
The only disadvantage of the models with electronic control – high cost, so such equipment is not available to all cottagers.
Before you choose the most appropriate pumping station, you should carefully examine the specifications of the pump, expansion tank and installation conditions of the equipment and then the supply system will work properly and effectively.