One of the main tasks in the engineering arrangement of a private house involves solving the issue of water disposal. Disposal of domestic wastewater, unloading of accumulated groundwater in the basement, as well as regular drainage of precipitation - all this is done by a properly organized drainage system. It can be natural, and can function with the support of power equipment. The second option is preferable, as it makes the system stable and reduces the risks of floods on the site. The power unit is a submersible drainage pump, which is selected according to specific operating parameters, taking into account operating conditions.
Key Features
When choosing a suitable transfer pump, it is important to consider the following technical and operational parameters:
- Power - from 250 to 1000 watts on average. Engine performance, water pumping speed and non-stop operation capabilities depend on this indicator.
- Productivity - from 70 to 600-700 l / min. In the process, submersible drainage pumps for water pump at a certain pace. Productivity indicates the volume of the working medium that is serviced in 1 min.
- The depth of immersion is from 5 to 15 m. It is also worth noting the maximum height of water rise already on the surface, which averages 6-10 m.
- The mass of the unit is from 2 to 10 kg. Depends on the materials of construction, configuration and type of engine. At first glance, light weight may seem an advantage, but in practice, many homeowners note the ease of immersion of heavy equipment in wells and wells.
How to calculate the intensity of water intake?
Usually, two indicators are taken into account in evaluating optimal performance - flow rate and pressure. In domestic conditions, as a rule, a water flow rate of 14 m3 / h is sufficient, and a pressure of up to 10 m3 / h. But, in order not to overpay for excess energy consumption with excessively high power, you can make an individual calculation. For example, the task is to pump water from a flooded basement or garage. At the first stage, the volume of the room is calculated. On average, such facilities have 20-25 m3. Next, the optimum pump flow is determined. For this it is necessary to divide the conditional garage volume of 24 m3 by the planned pumping time - for example, 3 hours. It turns out that you need to focus on drainage submersible pumps with a fence at the level of 8 m3 / h. As for the pressure indicators, they depend on many conditions, among which are the lifting height, the channel angle, the location of the pump itself, etc.
Management system - which one to prefer?
Depending on the model of the pump, control of its functions can be carried out manually or through automation. The second option is more reliable and safer for the technology itself, since it provides for a constant analysis of performance indicators. If the system detects a drop in water level or engine overheating, the unit shuts off automatically. This is how drainage submersible pumps work with an integrated float, which is an adjusting lever-switch. When it drops, the equipment turns off - and on the contrary, as the water reaches a certain level, the system starts the pumping process again. But for complex control systems, as a rule, separate electrical cabinets are required.
Models "Bison"
You can start the rating with a budget modification from domestic developers “MASTER M1 NPCH-M1-250”. The model is designed to serve clean water in garden areas. The advantages of the unit should immediately include a modest weight of about 4 kg, small size and the presence of a float with support for automatic operation. For the budget segment, these are good qualities, although many complain about the optimization of the design due to plastic. Actually, he largely determined the low price tag of this model in 2000 rubles.
The low power of 250 W also does not add attractiveness to the Zubr drainage submersible pump of this version. Immersion depth of 7 m with a rise of up to 6 m against a background of productivity of 90 l / min. significantly limits the scope of this equipment. On the other hand, it is precisely for solving simple drainage problems with small volumes that this option will be optimal. Moreover, there are no serious complaints about the build quality and reliability of this model.
Drainage submersible pumps "Caliber"
No less well-known domestic manufacturer of construction and household equipment, the products of which are also recommended for those who are looking for high-quality and inexpensive appliances for domestic needs.
First of all, the budget model “NPC-250 / 5P” stands out, which in general corresponds to the characteristics of the previous proposal of the “Zubr” brand. With a power of 250 W, the unit provides a capacity of 100 l per minute, lifting up to 7 m with an immersion of up to 6 m. The significant advantages of the Caliber drainage submersible pumps in this series include a long cable of 10 m, which allows connecting equipment over long distances . The cost of this unit is about 1800 rubles.
The owners of large sections will find a suitable option in the Caliber assortment. For example, the modification "NPC-750/25 NK" worth 7,000 rubles. has a 750 m engine and pumps water at a speed of 300 l / min. The owners of this pump indicate the strength of the structure, the presence of an air valve and the ergonomics of the cord with a soft shell. As for criticism, it refers to the “plastic” smell of consumables and the absence of chopping knives that would significantly enhance the functionality of this model.
Model "Dzhileks Kachok 550/14"
The middle class model, which can serve cottage plots, household territory or provide water to the garden. The pump’s power potential of 2000 W allows it to pump water at a speed of 550 l / min, taking out wells and pits up to 14 m deep. Balanced power characteristics and a well-protected design open up the possibility of using the Gileks submersible drainage pumps as this power support of septic tanks and other treatment plants.
The filtering ability of the unit allows the passage of particles with a fraction of up to 40 mm. Nevertheless, experienced users recommend using this pump with caution when working with ponds and ponds, where fibrous and solid objects can get in large quantities. In general, the device causes positive impressions both in performance and ergonomics, but the presence of plastic in the case causes doubts.
Drain pump Sterwins DW-3
A special solution for those who are looking for an inexpensive pumping unit for dirty water. In this case, the size of the transmitted particles is 35 mm, but it is necessary to take into account the improved mechanism for processing small debris, thanks to which the pump can be used in the nearest shallow streams, ponds and ponds. Sterwins DW-3 submersible drainage pump is also suitable as a means of servicing cellars, basements and pools with small debris. The power of the unit is average - 750 W, which allows you to count on a productivity of 225 l / min. The device can be immersed at 7 m, connecting it to the network via a 10-meter cable. The disadvantages of this proposal include only limited automatic control capabilities and a polypropylene housing. Otherwise, for home use this is a worthy option.
Quattro Elementi Drenaggio 1100 F Inox
Inexpensive at a price (5000 rubles) and at the same time a powerful (1100 W) tool for conveniently pumping water from flooded wells, basements and cellars. The feed height will be 9 m, and the productivity, provided that a hose with a diameter of 38 mm is used, will be 315 l / min. Operating practice shows that the 1100 F Inox drainage submersible pump copes well with dirty water, but it is sensitive to power surges and the temperature of the medium. Therefore, the conditions for using the equipment should be calculated in advance. Also, this option is not suitable for those who plan to acquire an economical assistant in organizing the drainage system. Users notice high electricity consumption even with standard load.
Model Gardena 4000/2 Comfort
One of the leaders in the segment of domestic pumps, Gardena offers a universal submersible unit for use in drainage and irrigation systems with the ability to connect sprinklers. The 4000/2 Comfort model does not require constant manual control. A high degree of automation provides starting and shutting down the engine depending on the current water level. It is important to emphasize that this technique focuses on working with clean water, which determines its low productivity (66 l / min). At the same time, reviews of Gardena submersible drainage pump of this modification indicate the effectiveness of protective systems. Blocking the engine in case of dry running, for example, protects the pump from overheating and breakdowns.
Model Grundfos Unilift CC 7 A1
The youngest version of the drainage pump in the Grundfos family, which can be considered as the best option for domestic needs. The unit is equipped with a 380 W engine, productivity is 158 l / min and a lift height of 6.5 m. The main advantage of the Grundfos Unilift submersible drainage pump of this modification is the combination of wide automation of the control process and structural reliability. Users especially praise the effectiveness of the suction filter made of stainless steel alloy. It allows you to pump household wastewater, rain and melt water without harm to communications, preventing the reverse outflow. The manufacturer traditionally takes into account the needs of different consumer groups, providing various accessories as standard. In this case, the pump is supplemented by a check valve on the nozzle and a nozzle adapter with a varying diameter.
Pump Operation Tips
During operation, the main task of the user is to monitor the technical condition of the unit. The main hazards are associated with clogging of the nozzles, impeller and engine. Negative factors can be minimized with the help of a small platform on which the equipment will be installed. It should raise the structure 2-4 cm from the floor or bottom of the well. This solution minimizes the risk of garbage suction. The drainage submersible pump should be diagnosed on a regular basis, which can be performed using hydraulic equipment and electrical multimeter devices. With a comprehensive examination, the indicators of the supply current, the tightness, the quality of the fasteners, the degree of wear of the working units, the condition of consumables, etc. are evaluated.
Conclusion
To facilitate consumer tasks in the selection process, pumping equipment developers carefully segment their products. This approach is practiced even in the narrow and far from the most popular segment of submersible drainage pumps. Grundfos, in particular, offers specialized modifications of the Unilift family, designed to work with clean water, dirty drains, sewer masses, etc. Depending on the direction of use, the designers provide the models with materials corresponding to their properties (steel, composites, plastics) and calculate optimal throughput. However, several different submersible pumps can be combined into one group. Many manufacturers today also produce universal control modules that allow controlling the work processes of several equidistant pumps from one point. Again, the organization of complex control systems requires more resource costs, but in this case both ergonomics and system efficiency increase in principle.