Gardening equipment

Submersible pumps for water: how to choose and how to set

Submersible pumps for water

Often, water garden and suburban areasleaves much to be desired. Basically, water is extracted from wells and wells. Many site owners, caring for convenience, try to automate this process, using submersible pumps for water. Some pumps are mounted on top (surface), and the other is submerged under water (immersion). Submersible pumps for water is most often used to:

  • supplying water to the water supply system;
  • pumping water;
  • organization of irrigation systems;
  • to create artificial streams, waterfalls, and fountains;
  • to carry out drainage works.


  • a submersible pump assembly
  • How to choose the best option?
  • Connection and installation of submersible pump

The types of submersible pumps may include drainage and sewage pumpsAnd submersible pump garden, whichIt is used for irrigation and watering. To drain dirty water with a lot of debris from the basin and pump sump pit drainage submersible use. Fecal pumps are commonly used for cleaning of cesspits, thorough cleaning of the wells from the clay and sand, etc. These pumps can pump liquid containing particles of impurities up to 5 cm. In suburban areas, especially in the spring, it may be desirable to quickly pump the water from the pond to drain the basement, to pump water out of the basement, often not very clean.

A good helper in this situation would beSubmersible pump for dirty water. Submersible water pump on the principle of action can be a centrifugal or vibrating. Submersible pump in the selected vibratory if required inexpensive, with small capacity, but a large depth of the suction unit, which can be lowered into the well. A more perfect from a practical and technical point of view is a centrifugal water pump. It does not create noise and rattle as vibration, it allows its use not only in the wells, but also wells. Performance of domestic centrifugal pump considerably higher. In turn are divided into screw centrifugal and vortex pumps.

  • A screw pump has a simple structure andintended for pumping liquid or pure water, which contains impurities (not more than 300 g / m?). It differs, often, low cost and reliability.
Typical screw pump

Typical screw pump is used to supply water to the system without contaminating inclusions

  • Centrifugal-vortex submersible pump at highPower is characterized by high pressure. The lack of it - excessive sensitivity to impurities in the liquid. Under the influence of particulate matter and the wheel housing (vanes) subjected to intense wear, the clearance between them becomes greater and the efficiency is markedly reduced.
Options centrifugal submersible pumps

Models centrifugal submersible pumps

a submersible pump assembly

a submersible pump assembly depends on itsmodel. The centrifugal pump has an impeller with blades enclosed in the housing and coupled to the motor shaft. Water, during rotation of the impeller, the pump and fills the centrifugal force is pushed out of the housing, which is in the form of a snail shell, into the pipeline and it is supplied to the tank or directly to water extraction points. Upon rotation of the impeller in the pipe, which serves for the suction, a vacuum is created, so water flows continuously in the pipeline.

Inside the submersible pump

Inside the submersible pump

At the drainage pump working chamber ratherwide, it allows impurities to pass freely through it, without stopping and without prejudice to the mechanism. Since the suction opening is in the bottom of the unit, it is able to pump almost all of the liquid, it suffices to lower it to the bottom of the container. Additional convenience is provided by the built in automatic devices that disable the engine at the "dry" or overheating. Float switch, which are equipped with submersible pumps of this kind allows the unit to run in their own work, if necessary. Pumps for dirty water, often has an impeller made of cast iron or stainless steel.

How to choose the best option?

Pump selection should be based onKnowledge about the planned level of water consumption and, consequently, the desired pressure. There is quite a simple formula that will allow to answer the question, how to choose a submersible pump power required: Ntreb Ndine = + In which Nnap Ntreb - the required water pressure; Ndine - dynamic water level (distance to water level above the ground when the pump; Nnap - the distance to the point of consumption skvazhiny.Takim, choosing submersible garden, it is necessary, first of all, to determine the operating parameters: flow (Q .) and head (H) water consumption can be easily determined if we summarize the performance of all water intake points and take into account the possibility of simultaneous use of simplified calculation can be done using the following rules.:

  • sink - 60 l / h;
  • kitchen sink - 500 l / h;
  • bathroom - 300 l / h;
  • shower - 500 l / h;
  • cistern - 83 l / h;
  • tap for irrigation - 1080 l / h (coverage depends on the intensity and irrigation);
  • bath, sauna - about 1,000 l / h.

Consider it also follows that the summer is often athe need for watering the garden and the garden, and it affects the level of water consumption. Furthermore, the number of users is set and water extraction points. When selecting a pump for dirty water, it is important to decide where and for what purpose it will be used. The degree of contamination of water supplied - an important criterion. The passport of each said article, a particle size, it may be pumped along with water without damage to the mechanism. Many believe that the 10 mm to give enough.

Since the drain pump is not used forwater supply up, and the pressure they often small, in the range of 10 m, but horizontal filing this figure can be multiplied by 10. Current models of drainage pumps are virtually maintenance in the complex. The owner himself could easily cope with the change and the cleaning of the filter.

Connection and installation of submersible pump

It is noted, unfortunately, that the submersible pumpsoften fail. The reason, however, is not always in low quality equipment, and more often that the selection of the equipment of the project development and installation of a submersible pump is not always carried out by professionals. Sometimes the wiring diagram of the submersible pump is made by the owners of private houses, which have a very vague idea of ​​how it should look. Few people know that the pump motor, which is matched with plenty of power can burn very quickly, if at the time of installation and configuration of the entire system does not bring the pump in the optimum operating range. Therefore, cheaper and more rational to choose the pump, taking into account the real needs and with the direct assistance of experts.

Driving a typical installation of all submersible pump

Driving a typical installation of all submersible pump

How to install a submersible pump? When installing any pump must align its operating point in all operating modes that are possible. When you enter it into operation is measured:

  • feed consumption, for this determines the speed with which filled every container of known volume;
  • generated pressure (it is determined by the pressure gauge);
  • current consumption, measured with special forceps.

These data are carefully checked againstpassport characteristics. With a significant excess of the operating parameters must be taken: the valve cover, create a resistance to set the correct operating point - the middle of the characteristic Q (H). All these manipulations are not necessary to produce their own. Installation, as well as the choice of the pump must be undertaken by trained specialist, only then can we count on its durable and efficient operation.

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