One of the main tasks in the engineering arrangement of a private house involves solving the issue of water disposal. Removal 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, or it can function with the support of power equipment. The second option is preferable, as it makes the system stable and reduces the risk of flooding on the site. The submersible drainage pump acts as a power unit, which is selected according to specific operating parameters, taking into account operating conditions.
Hardware highlights
When choosing a suitable transfer pump, it is important to consider the following technical and operational parameters:
- Power - from 250 to 1000 W on average. The performance of the engine depends on this indicator, the speedpumping water and the possibility of non-stop operation.
- Productivity – from 70 to 600-700 l/min. During operation, submersible drainage pumps for water pump at a certain pace. Capacity indicates the amount of work environment that is serviced in 1 minute.
- Dive depth - from 5 to 15 m. Here it is 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 like 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 withdrawal?
Usually, two indicators are taken into account in evaluating optimal performance - flow and pressure. In domestic conditions, as a rule, a water flow 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 at excessively high power, you can make an individual calculation. For example, the task is to pump water out of a flooded basement or garage. At the first stage, the volume of the room is calculated. On average, such objects have 20-25 m3. Next, the optimum pump flow is determined. To do this, it is necessary to divide the volume of a conditional garage of 24 m3 by the planned pumping time - for example, 3 hours. It turns out that you need to focus on submersible drainage pumps with a intake of 8 m3 / h. WhatAs for the pressure indicators, they depend on many conditions, including the height of the lift, the angle of the channel, the location of the pump itself, etc.
Control system - which one to choose?
Depending on the model of the pump, the control of its functions can be carried out manually or through automation. The second option is more reliable and safer for the equipment itself, since it provides for a constant analysis of performance indicators. If the system detects a drop in water level or overheating of the engine, the unit switches off automatically. This is how submersible drainage pumps work with a built-in float, which is an adjusting switch lever. When it drops, the equipment turns off - and vice versa, as the water reaches a certain level, the system restarts the pumping process. But complex control systems usually require separate electrical cabinets.
Zubr models
You can start the rating with a budget modification from domestic developers "MASTER M1 NPC-M1-250". The model is designed to serve clean water in garden plots. The advantages of the unit should immediately include a modest mass 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 of 2000 rubles.
The low power of 250 W also does not add to the attractiveness of the drainagesubmersible pump "Zubr" of this version. Immersion depth of 7 m with a lift of up to 6 m against a performance of 90 l/min. significantly limits the scope of this equipment. On the other hand, it is for solving simple problems of drainage with small volumes that this option will be optimal. Moreover, there are no serious claims to the build quality and reliability of this model.
Drainage submersible pumps "Caliber"
An equally well-known domestic manufacturer of construction and household equipment, whose products are also recommended for those who are looking for high-quality and inexpensive household appliances.
First of all, the budget model "NPC-250/5P" stands out, which, in general, corresponds in terms of characteristics to the previous proposal of the Zubr brand. With a power of 250 W, the unit provides a performance of 100 liters per minute, lifting 7 m with immersion up to 6 m. Significant advantages of the Kalibr submersible drainage pumps of this series include a 10 m long cable, which allows you to connect equipment over long distances. The cost of this unit is about 1800 rubles.
The owners of large plots will also find a suitable option in the Caliber assortment. For example, a modification of the "NPTs-750/25 NK" worth 7000 rubles. has a 750 m motor and pumps water at a speed of 300 l/min. The owners of this pump point to the strength of the design, the presence of an air valve and the ergonomics of the cord with a soft sheath. As for the criticism, it refers to the "plastic" smell of consumables and the lack of chopping knives, which would greatly increase the functionality of this model.
Model "Dzhileks Kachok 550/14"
Model of the middle class, which can serve summer cottages, home gardens or provide water supply to the garden. The power potential of the pump of 2000 W allows it to pump water at a speed of 550 l/min, extracting from wells and pits up to 14 m deep. support for septic tanks and other treatment plants.
The filtering capacity of the unit allows the passage of particles with a fraction of up to 40 mm. However, experienced users recommend using this pump with caution in ponds and reservoirs where fibrous and hard objects can enter in large quantities. In general, the device causes positive impressions both in terms of performance and ergonomics, but the presence of plastic in the case raises doubts.
Drainage pump Sterwins DW-3
Special solution for those who are looking for an inexpensive pumping unit for dirty water. In this case, the size of the passed particles is 35 mm, but it is necessary to take into account the improved mechanism for processing small debris, due to which the pump can be used on nearby shallow streams, reservoirs and ponds. The Sterwins DW-3 submersible drainage pump is also suitable as a maintenance tool for cellars, basements and pools with small debris. The power of the unit is average - 750 W, which allows you to count on a performance of 225 l / min. The device can be submerged to 7 m by connecting it to the network via a 10 m cable. The disadvantages of this proposal include only limited possibilities for automatic control and a polypropylene housing. Otherwise, for home use, this is a worthy option.
Model 1100 F Inox from the Quattro Elementi Drenaggio series
Inexpensive (5000 rubles) and at the same time powerful (1100 W) tool for convenient pumping of water from flooded wells, basements and cellars. The delivery height will be 9 m, and the productivity, subject to the use of a hose with a diameter of 38 mm, will be 315 l / min. As practice shows, submersible drainage pumps 1100 F Inox cope well with dirty water, however, they are sensitive to voltage drops in the mains and the temperature of the working environment. Therefore, the conditions for the use of 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 note high power consumption even with standard load.
Model Gardena 4000/2 Comfort
One of the leaders in the household pump segment, Gardena offers a universal submersible unit for use in systemsdrainage and irrigation with the possibility of connecting sprinklers. Model 4000/2 Comfort does not require constant manual control. A high degree of automation ensures that the engine starts and stops depending on the current water level. It is important to emphasize that this technique is focused on working with clean water, which also determines its low productivity (66 l / min). At the same time, reviews of the Gardena submersible drainage pump of this modification indicate the effectiveness of protective systems. Blocking the motor in case of dry running, for example, protects the pump from overheating and damage.
Model Grundfos Unilift CC 7 A1
The youngest version of the Grundfos family drain pump, which can be considered as the best option for domestic needs. The unit is equipped with a 380 W motor, the capacity is 158 l / min, and the lifting height is 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 efficiency of the suction filter made of stainless steel alloy. It allows you to pump domestic sewage, rain and melt water without harm to communications, preventing backflow. The manufacturer traditionally takes into account the needs of different consumer groups, providing various accessories in the basic configuration. In this case, the pump is supplemented with a check valve on the nozzle and an adapter nozzle with a changingdiameter.
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 nozzles, impeller and motor. You can minimize negative factors with the help of a small platform on which the equipment will be installed. It should raise the structure by 2-4 cm from the floor or the bottom of the well. This solution minimizes the risk of debris being sucked in. On a regular basis, the submersible drainage pump should be diagnosed, which can be performed using hydraulic equipment and electrical multimeters. During a comprehensive examination, indicators of the supply current, tightness, quality of fasteners, degree of wear of working units, condition of consumables, etc. are evaluated.
Conclusion
To make it easier for the consumer in the selection process, manufacturers of pumping equipment carefully segment their products. This approach is practiced even in a narrow and far from the most popular segment of drainage submersible 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 operation, designers provide models with materials that are appropriate in terms of properties (steel, composites, plastics) and calculate optimum throughput. In this case, several different submersible pumps can be combined into one group. Manymanufacturers today also produce universal control modules that allow you to control the work processes of several equidistant pumps from one point. Again, the organization of complex control complexes requires more resource costs, but in this case, both ergonomics and system efficiency increase in principle.
