Choosing a pump for dirty water. The best submersible drainage pumps for dirty water Submersible drainage pump for dirty water

Model overview

• Pedrollo VXm 10/35 is a bright representative of the family of fecal pumps from the Italian manufacturer. Works with very dirty water containing abrasive substances and heavy impurities. Productivity is 18 cubic meters an hour. Creates pressure up to two meters. It belongs to household appliances and has low power consumption - 750 W per hour. Market price from 13,000 rubles.
• Karcher SDP 14000 is a drainage type pump with impeccable German quality. Works with water containing an average amount of mud particles. The recommended size of solid dirt elements is up to two centimeters. The built-in filter reliably protects the device from abrasive impurities and elements of the specified size. Able to lift liquid from a depth of eight meters, while creating a pressure of 0.8 bar. Differs in extremely high productivity - pumps out up to 14,000 liters per hour. Power 800 watts, refers to household models. The body is made of plastic. The average price is from 8,000 rubles.
• Grundfos KP 350-A-1 is a high-quality drainage unit supplied to world markets by the Danish company of the same name, a leader in the manufacture of pumping equipment. Works with pure and water containing small impurities. Perfectly copes with pumping water from drains located under showers and washing machines. It has a capacity of up to 14 cubic meters of water per hour. Creates a pressure of nine meters with a pressure of 10 bar. The body is made of stainless steel. Refers to household appliances. It is quite economical in terms of energy consumption - the power is 700 watts. The average price is from 27,000 rubles.

If on a suburban area the house is still not connected to the mains, but there is an acute the need to pump out dirty water, the owners can use a manual type pump. It is not cheap, about 9,000 rubles. The main advantage of such a device is the absolute independence from the power supply. When buying a pump, you should also pay attention to the size of solid mud particles, in the presence of which the technical data sheet allows the operation of a particular device.

The problem of pumping melt and storm water is well known to most owners of country houses and summer cottages. Therefore, sooner or later, each of them has to think about how to choose a drainage pump for pumping out dirty water, because getting rid of it with buckets is very difficult physically, and calling utilities is not very cheap. So, the purchase of such a drainage pump can be a real salvation for the household, especially since, together with the pumping out of water formed during a heavy downpour or flood, the pump can help solve many household problems. For example, it can be used to quickly pump out water from a pool or pond, and even water the garden by lowering the hose into a water source located in the immediate vicinity of the house. Moreover, drainage pumps can be called more convenient and versatile compared to devices designed to work inside wells and wells, since they can pump not only clean, but also heavily polluted water.

According to the method of fluid intake, drainage pumps for dirty water divided into two types: submersible and surface.

Surface pumps are used for pumping liquids with a small level of pollution, containing particles with a fraction size, not exceeding 10 mm. Surface drainage to start work must be placed on a solid, even surface, lowering the inlet pipe coming from the device to the bottom of the cleaned reservoir or room. A distinctive feature of units of this type is their low power, so they are more suitable for occasional use. For example, they can effectively clean a flooded basement once or twice a season and water the garden from time to time. Submersible Drainage Pumps during operation, they are placed at the bottom of the water intake source. Designed for pumping contaminated water containing in its composition large particles up to 5 cm in size.

Important: To clean a septic tank or cesspool, you need to use a special pump for pumping dirty water, called faecal. Its difference from the drainage pump lies in the presence in its design of a special grinder that crushes all the solid particles present in the wastewater. Thanks to this device, the fecal pump does not clog and works more efficiently in heavily polluted waters with various fibrous inclusions.

The advantages of both types of pumps, as well as their "weaknesses" are presented in the following table:

Please note that a submersible pump for pumping dirty water is more intended for operation in wells with a great depth or for pumping heavily polluted water, so if you need to pump out a small amount of relatively clean water, it is not advisable to use it. To do this, it is better to use a pump with a surface intake.

Application and operating conditions

Due to their practicality and versatility, drainage pumps for pumping dirty water have a fairly wide range of applications on an industrial and domestic scale. In particular, they are used for the following purposes:

• Pumping water in case of breakthroughs and accidents of the centralized sewerage pipeline.
• Drainage of basements and basements when they are flooded with flood waters.
• Removal of excess water accumulated as a result of intense and prolonged rainfall.
• Cleaning of reservoirs of artificial origin (pools, ponds, etc.).
• Irrigation of large areas by drip irrigation.

In order for the drainage pumps to function correctly and smoothly, the following conditions must be met:

• Operating temperature of pumps: no more than +40 ⁰С.
• Density of liquid intended for pumping: 1000-1200 kg/m 3 .
• The presence of solid impurities: no more than 10%.
• Voltage: for industrial pumps - three-phase, 380 V; for household - single-phase, 220 V.
• Frequency: 50 Hz.

Device and principle of operation

The Dirty Water Garden Drainage Pump is a compact device consisting of a body with a pump assembly and an electric motor inside. The electric motor consists of a stator, a rotor and bearing assemblies. On the rotor shaft is a centrifugal impeller. As a rule, it is made of durable, wear-resistant materials: stainless steel, cast iron, plastic, which may vary depending on the scope of use and the power of the device.

The working chamber of the drainage pump is quite capacious and spacious, so that large elements present in the water pass freely from the suction grate to the outlet pipe without affecting the performance of the device. However, this does not mean that such a pump can suck particles of any size. Its lower part is equipped with a suction grate, which has two rows of holes that allow impurities of a certain diameter to pass through. For example, 5, 25 mm, etc.

The pump may include temperature relay, which automatically turns off the device in case of overheating. Many modern pump models are also equipped with a special dry run protection. This is a float switch that turns off the pump motor when the water drops below the set level.

Drainage pumps of submersible and surface type can operate on a vortex, centrifugal and vibration principle. At the same time, vibration-type units, due to their sensitivity to the content of impurities in the liquid, are designed for pumping clean water. Devices pumping heavily contaminated liquids most often operate according to a centrifugal scheme. Mechanism of action: A running electric motor transmits rotation to the impeller, which throws water to the outer surface of the pump chamber, which creates high pressure in the outlet pipe. At the same time, the working chamber is equipped with a system of valves installed at its inlet in order to prevent the reverse flow of water. Due to the occurrence of high pressure in the outlet pipe, a rarefaction occurs in the intake part of the pump, which ensures the suction of the liquid.

Selection rules

In order to decide which drainage pump for dirty water is best, it is necessary, first of all, to decide what tasks it will perform, taking into account the following factors:

• Type of liquid being pumped.

That is, if you have to pump clean water, without impurities of sand, silt and other contaminants, you can use models with a small nominal diameter. For cleaning construction pits, cesspools and other places with heavy pollution, it is necessary to use pumps of the appropriate types, equipped with special filters.

• Performance.

In this case, one should focus on the nature and degree of use of the pump (the amount of liquid that it has to pump out per unit time), given that the vertical rise of one meter of water is equal to ten meters pumped from a horizontal plane.

Please note: models with a power of 200-400 W can pump up to 80-100 liters of fluid per minute. Pumps of the "middle class", having a power of 400-1000 W - up to 200-300 liters per minute.

• The location of the suction pipe.

It can be lower, side and upper. To clean flooded rooms and containers, you should choose models with a lower nozzle location. For the intake of liquid from silty reservoirs - with an upper one.

• Availability of additional features.

This is an automation system, a float system for starting and installing, protection against overheating and short circuits, etc. When buying a drainage pump for dirty water, before choosing this device, you need to pay attention to the following points:

• For a family of 4 people and maintenance of a plot of 6 acres, a pump with a capacity of 120 l / min is enough.
• The device must be connected to the power supply using a differential circuit breaker.
• Drainage pumps must not be used for pumping liquids of a flammable and chemically aggressive nature.

Prices for drainage pumps

When wondering which drainage pump to choose for dirty water, the price for making a decision is also an important factor. Below is an estimated cost for some popular models.

Water for every person is a vital substance. But what if she starts to deliver a whole bunch of trouble? And this happens more often than you might think. Initially, of course, water is a fairly pure liquid. Especially the one that people use for drinking and domestic needs. But there are other waters - after the melting of snow, heavy rains. This happens, and then the basements are flooded, and the foundation is eroded, which threatens to destroy the whole building. These issues have to be addressed somehow, and household drainage pumps for dirty water usually help with this.

What is a sump pump for?

It is these most useful devices that will be considered now. Naturally, they are used for one single purpose - to pump out excess water, sometimes even polluted. That is why the drainage pump for dirty water is indispensable in country houses and on plots. In addition to this function, it allows you to do other things. For example, pools or pits also sometimes need to be pumped out, and it is these mechanisms that help in such cases. So we will consider not only the description of the mechanisms themselves and their principle of operation, but also deal with another important question: “Dirty water drainage pump - how to choose the best model?”.

Main components

In order not to delve too deeply into the mechanism of the device (which you absolutely do not need), you can simply describe it in a nutshell. So, the drainage pump for dirty water consists of two most important parts - the engine and the pump assembly. All this is placed in a sealed case. The latter, at least usually, is made of stainless steel. For cheaper models, durable types of plastic are used. The impeller of the engine is equipped with blades and is attached to the rotor shaft.

Principle of operation

Before deciding which drainage pump for dirty water is better, you need to figure out how it still works. It is not worth going into the design or mechanism of action especially - this is the lot of specialists. But the owners of such units need to know the main points. This will help to avoid many mistakes and troubles, both when choosing an element and during its operation.

So, the node, which has already been mentioned as one of the two most important parts of the structure, sucks in water. The whole process passes through special holes that each drainage pump for dirty water is equipped with. The functionality of the mechanism depends on their diameter: the larger they are, the more polluted water they can suck. For ease of operation, such units are equipped with a float switch.

Main characteristics

Before choosing a drainage pump for dirty water, you need to find out in what conditions it will have to work. This will all affect the range of your options as there are different models for different types of jobs. You can determine how suitable this or that device is for you, not only by the technical specifications from the manufacturer, but also by reading the section of our article “Dirty Water Drainage Pumps - Reviews”. So, the main characteristics of the devices are as follows:

• The location of the suction hole. Household pumps are best purchased with its lower position. But for industrial devices, this is generally unimportant.
• Frame. It can be either steel or plastic. This will affect the weight and ease of operation of the device. There are also cast-iron models, but they are intended for industrial work.
• Working chamber. If the water pumped by the device does not contain impurities, then the size of the chamber does not matter. But if the substances in the water are large enough, then the size of the chamber should allow them to pass through it unhindered. Otherwise, it will simply damage the working mechanism.
• Design. Household models are usually simpler, and this allows the owner to take care of them on their own.
• suction device. This is usually a centrifugal mechanism that allows you to suck in both just water and contaminated liquid with various impurities.

Drainage pump for dirty water - how to choose? Materials for parts and body

This characteristic is the main indicator of the service life and also greatly affects the price. Pumps can be made from the following materials:

• plastic is the least durable and cheapest option;
• case plastic and stainless steel of the working mechanism - such a device lasts longer, but also costs a little more; this is the best option for household models;
• stainless steel or cast iron provide structures made from them with durability and resistance to damage, but small models from such materials are rarely produced and they are quite expensive.

Marking

Vane pumps are usually marked according to the material of the vanes. The following options are possible:

• stainless steel - cheap models;
• technopolymer - durable, resistant to external influences, but quite an expensive option.

Classification by installation method

Dirty water drainage pump is a rather complicated device. Therefore, such structures can be installed in different ways. The type of installation determines the principle of operation and the capabilities of the pumps. According to this criterion, such devices are classified as follows:

• Submersible drainage pumps for dirty water - the working mechanism is completely immersed in the pumped medium. This is how pools and basements are drained.
• Semi-submersible pumps for dirty water. They are mainly used for pumping water from reservoirs and cellars. They are used by immersing the body approximately half in water.
• A surface drainage pump for dirty water is commonly used in stations. So they are connected to wells and wells. This type of units allows you to quickly pump out water even from very great depths.

What can extend the life of the pump?

In fact, the service life is a very important line in the characteristics of this element. Drainage pump for dirty water which one to choose? The answer to this question usually lies in how long this or that mechanism can work. There are several problems that may arise during its operation, but it would be better to describe only the main ones.

For example, during operation of the device, the engine may overheat. Drainage pumps often sin with this. This is very dangerous, as it can lead to serious damage that can no longer be repaired. You can avoid overheating in a very simple way: by installing a thermal relay that will monitor the temperature and turn off the engine when a critical point is reached.

Liquid level

Besides, there is another problem. The drainage pump for dirty water, in principle, can work with any liquid level, but if it is low, then this is fraught with a decrease in the life of the unit. Buying a pump with a built-in float can help here. Not only will this shut off the engine at very low fluid levels, avoiding mechanical problems, but it can also keep your basement from flooding. The point here is that such devices can be configured to automatically turn on at a certain water level. So when the snow melts and it rains, the water that gets into the basement will not rise above the minimum level required to start the element. And this is even in the absence of the owners.

What specifications should be taken into account when choosing?

In fact, there is simply no such thing as the best drainage pumps for dirty water. All of them are designed to work in different conditions and in different volumes. It is under such, one might say, individual characteristics that such a device must be selected. Otherwise, you can achieve completely different results.

• Performance. It is easy to find out, since all manufacturers indicate this characteristic. For domestic pumps, a capacity of more than two hundred liters per minute is unlikely to be needed - this is more than enough to drain a basement, cellar or pool.
• Required pressure. It is important to know at what height and distance the water is supplied. Height can be defined as the distance between the immersion level of the device and the outlet points of water from the nozzle. It must be remembered that ten meters of a pipe or hose will mean a loss of one meter of pressure.
• Pumped out medium. Here the choice will be what impurities the pump can pass through. This is a very important component, and therefore you need to pay special attention to it.

Drainage pumps for dirty water - reviews

As you probably already understood, choosing the right device is quite difficult. The point here is not only and not so much in the variety of different models on the market. Rather, the problem lies in the multiplicity of pump assembly options.

So, users rate models made entirely of plastic as very functional. This is mainly because they are light. But there is also a minus: they are unstable to mechanical damage. And the service life of such mechanisms will not be very long. That is, plastic models are suitable for those who want to save on purchases and at the same time are not going to pump out water daily. In addition, the plastic mechanism is poorly adapted to dirty water - this must also be remembered.

According to reviews, the models that combine a plastic case with a stainless steel mechanism are the most popular among buyers. Such pumps promise lightness, durability and quality of work. However, large masses of water, especially dirty ones, cannot be pumped in this way. But if you do not plan to pump water from an underground well with a household pump, then this is definitely your choice.

Cast iron pump models are the most expensive. But the user opinion is such that it is not possible to break something in such a unit. In addition, the efficiency of work will be higher than that of similar models from other materials.

The most popular pumps are Wilo, Ranger, Makita, IBO.