Drainage pumps are used for pumping water in a wide variety of technical fields. They are superficial and submersible. The choice of model depends on its technical characteristics and preferences.
Advantages and disadvantages
Drainage pumps for water have the following main advantages:
- mobility, reliability and small dimensions;
- ease of use
- greater productivity and economy;
- reasonable cost
- possibility of pumping contaminated liquid media.
Pumps of this type can not raise water to a high altitude, as they are not able to create a large pressure. In comparison with other varieties, they require more complex maintenance and repair.
Applications of drainage pumps
By appointment, the pumps are divided into household and industrial. The division is conditional and basically lies in their productivity. Household pumps are used in a private household for the following purposes:
- pumping water from the cellars;
- emptying of tanks (basins, tanks);
- pumping water in plumbing systems.
Industrial submersible drainage pumps for water serve for drying of building pits, sewerage and drainage systems.
Materials for manufacturing are cast iron, stainless steel and a strong polymer.
Main parameters of drainage pumps
Each unit has certain characteristics, the main ones being capacity, outlet pressure and permissible water contamination.
When choosing drainage pumps for water, it is necessary to determine which tasks can be solved with them. By performance, it is determined how much water can be pumped in a certain time.
Pressure is an important parameter on which it depends, on what height it is possible to raise water and how much to pump. These indicators are summarized. With a horizontal water supply, a design factor of 0.1 is introduced (loss of 1 m head to 10 m of the pipe).
Submersible drainage pumps
The pump falls below the water level. It is pumped up through a rubber hose or pipe. The simplest models provide water supply to a small height, and more powerful ones can be immersed to a depth of 80 m.
Pumps submersible drainage for water are divided into 2 large groups. One of them is designed for pumping water from different sources. Many of them are multistage, which makes it possible to create a great pressure to lift the liquid for several tens of meters and create network pressure. Dirty water by conventional units is not pumped because of the rapid wear of the impellers.
The following group of submersible pumps include drains for drains. When selecting them, it is necessary to have data on the degree of contamination of the pumped water. The impeller is made single-channel, which makes it possible to pump water with large mechanical inclusions. If it is of an open type, then it can be used for liquids with more contamination. Some models have a chopper at the input, which allows to crush the particles. Naturally, he can not cope with stones or wood. The pressure is created high, thanks to modern technologies. The cost depends on the parameters. It is always possible to select drainage pumps for water, the price of which corresponds to the importance of the tasks being solved.
The submersible pump with the attached hose and cable is lowered to the required depth with the help of a safety wire.
Then it is turned on and after 1 hour of work without load is put into operation.
Drainage pump for dirty water: how to choose, tips
Each model has a special purpose. For ordinary wastewater, an ordinary drainage device is suitable. With sewage, he can not cope. A fecal pump is required here.
To make the analysis of water pollution as it is given in the characteristics (g / m 3), the ordinary user is unlikely to succeed, but approximately the maximum particle size he can determine.Errors here should not be, otherwise the filter and the drainage pump for water will constantly be clogged. How to choose it and find a compromise solution? In most cases, the particle size is 5-20 mm. Most drainage devices cope with them. At the pump inlet, a protective net must always be installed.
If the sewage is heavily contaminated, a fecal pump equipped with a chopper is required. This type is used for sewerage and heavily soiled sewage.
A characteristic of all drainage pumps is the large diameter of the outlet branch pipe. It requires a hose of the appropriate size.
The best pump manufacturers are in Germany (WILO), Denmark (Grundfos) and Italy (Pedrollo, DAB). Danish drainage pumps for water have high reliability and durability. The model range is diverse. Most products are made of stainless steel and are used for pumping water of different pollution and temperature.
Often used for pumping clean and slightly contaminated water pump type Unilift CC 9 A1 Grundfos. A single-stage unit generates a head of 8.6 m. At a power of 0.78 kW it has a capacity of 13.8 m 3 / h. The pump is equipped with a filter at the inlet and a float switch. The price is about 15 thousand rubles.
Pumps of Italian and German brands are distinguished by a new design, purpose, technology and many other qualities. Drainage pumps for water, the price of which is high, are in great demand, as it fully corresponds to quality.
Pumps of the series Pedrollo ТОР-GM are designed for pumping out sedimented water with suspensions. Their productivity is 9.6 m 3 / h with a head of 9.5 m. Models such as Pedrollo TOP VORTEX can pump very dirty drains with a size of suspensions up to 20 mm. The units are designed for cleaning septic tanks and rainwater tanks. The price of household models is 10-12 thousand rubles.
The single-bladed type Drain MTS 40 from WILO with a capacity of 14 m 3 / h and a head of 20 m contains a cutting device. The pump can be immersed to a depth of 10 m. Its price exceeds 70 thousand rubles.
Some German companies that manufacture industrial drainage pumps for dirty water, the price by our standards literally goes off scale, but impressive and the quality, which allows to solve complex problems.
Domestic pumps "GNOME" are also reliable, convenient to use and widely used. Some types work even with incomplete immersion, due to the fact that the pumped water is washing the body through the shirt.
Drainage pumps for water make life easier and more rational to solve problems that previously required significant costs and efforts. These include drainage and water supply to suburban areas. It requires imported drainage pumps for dirty water, the price of which is quite high. But you can always choose an acceptable option, thanks to the variety of models produced.