The pump for the well is not afraid of sand. Borehole pumps for dirty water with sand. What borehole pumps to buy

In individual housing construction, when building a water supply system, surface pumps are used for a well for water and for a well. When a water supply system is built on the basis of a well, pumping stations equipped with a relay unit and a membrane tank make it possible to build a system with quick-detachable equipment. Such equipment can be used seasonally, or you can even put it under lock and key every time you leave the country, or take it with you.

In the case of using a well, a similar usage pattern can also be built. However, it has a number of features that should be considered when using surface stations as pumping equipment.

Into the well, in view of it design features, water from the sandy aquifer enters gradually. The main volume of water in the well is from 4 to 20 tons. This amount of water allows solid impurities to settle to the bottom. In the subsurface layer, well water is relatively free of solids.

In a well, the situation is somewhat different. In the cavern of the well, with increased pumping, water enters from the aquifer with a large pressure. The volume of the cavity is small, because the sand brought by water has virtually nowhere to settle. Sand is sucked up by pumping equipment.

In which wells can a surface pump be used?

One more moment. In deep wells, a surface pumping station will not work. For these purposes, a submersible borehole pump is more suitable. The surface station can be used in shallow wells, comparable in depth to ordinary wells - 8-12 meters. We must not forget that just like from a well, from a well you need not only to raise water, but also to supply it to the house, sometimes to the second and third floors.

We discussed the difference between a shallow well and an ordinary well in the previous paragraph. It turns out that at the same depth in the same area, the well will not “give out” water with sand, but the well will. We will have to select a pumping station for the well, which is guaranteed to work in such conditions.

Now let's move on to the question of which pump is best for a sand well in these conditions. It is worth stopping at the option that has the following characteristics:

1. Increased capacity to allow scheduling a 20-30 percent redundancy for adverse conditions.
2. Increased throughput and, as a result, increased cross-sections of all through holes and pipelines.
3. Basic equipment of a dry-running relay in case of clogging of the sand filter.
4. Sand filter complete with built-in separator.
5. Possibility of easy replacement of the filter on the supply pipeline.

Not every pumping station is suitable for working with a tubular well, the trunk of which is saturated with sand. However, almost any station can be used by providing its supply line with a sand filter and inserting an additional filter with flushing between the electric motor and the membrane tank.

Why can't a washable filter be used in front of the station's electric motor? Because in this case, a clogged filter will reduce pressure and eventually the engine will burn out.

Why is it necessary to put a washable filter in front of the membrane tank? Because if you put a filter after the tank, after 1-2 months of operation you will have a non-working membrane tank completely clogged with sand.

The washable filter is good because it can be cleaned by draining the pulp (sand with water) through the drain hole with a tap. Filters with a transparent housing now available allow you to visually monitor the condition of the filter and the amount of sand deposited in it.

If the mesh is too fine, the pump motor will not be able to create the necessary pressure in the water supply system behind the filter.

Of course, the cost of a washable filter is an order of magnitude higher than that of filter replacement elements. But it does not need to be changed, it is enough to wash it.

The cost of the simplest washable filter starts from 1500 rubles.

Which surface pumps can be used

So, surface pumps for a well for water with sand must be of increased power, must have a sufficient electric motor resource and must be equipped with a sand filter. Surface pumps for sandy water wells can also be optionally equipped with washable filters that protect the station itself and plumbing system houses where water enters the tapping points.

For advice on surface pumps for use in shallow wells, .

Submersible pumps in sand wells

A few words about submersible pumps that can be used in deep wells. What is the best pump for a sand well? One that is able to "digest" water with sand and supply it upward to the water pressure unit. Already here, at the top, it is possible to organize filtration and removal of sand from the water coming from the submersible pump.

There are domestic and imported pumps on sale, which are designed to work in such conditions. Several types of Aquarius pumps, and the well-known Brook, are capable of supplying water with sand to the surface without harm to themselves.

Why not put a sand filter in front of a submersible pump in a well? Because in case of clogging, you will have to raise to the surface both the filter and the pump, and 8-10 meters of the supply pipeline.

In the case when the filter element is on the surface, it will be enough just to rinse it.

Well pumping

Another case when you need a pump that can "digest" water with sand is pumping any well after drilling. At this moment, the final formation of the well cavity takes place, and its pumping is required for further successful use.

How to choose sand from the well at this stage? The best option is to pump it out. Can be used surface station if the well is shallow, or submersible pump. If the well has a depth of 15-20 meters.

In everyday life and production, it is often necessary to pump out water. This may be necessary, for example, to clean reservoirs, wells or wells.

But it is not always necessary to “cope” with clean water, without impurities, sand, silt and other deposits: when it becomes necessary to pump out water with various kinds of inclusions, sand pumps will help to cope with this task perfectly.

1 What is a sand pump?

The sand pump is a pumping equipment: these are single-stage, cantilever centrifugal pumps with an impeller (open) on one side. Its main task is to pump various kinds, including sandy, abrasive slurries, ore dressing products, as well as alumina production, water mixed with clay, silt, etc. However, there are certain limitations on the physical and chemical properties of that fluid that needs to be pumped or cleaned.

Indicators that the pumped solution should have:

1. The temperature can be from 5ºC and not exceed 60ºC.
2. Density of pumped liquid up to 1300 kg/m³.
3. The concentration of solids (inclusions) should not exceed 25%.
4. The maximum size of these same inclusions can reach up to 10 mm, no more.
5. The maximum microhardness is 9000 MPa.

It is better to pay attention to these indicators, since if they are observed, pumping equipment will work most efficiently and for a long time.

1.1 Applications

The main areas of application of this type of pumps are metallurgical, mining, construction and other industries, while this is not an exhaustive list of areas where it can be useful.

The silt and sand pump can perform the following tasks:

• for cleaning and subsequent filling of trenches (when laying cables, pipelines, etc.);
• removal of sludge, silt, settled dirt, clay, Wastewater, various types of household and industrial waste;
• for cleaning caissons during construction work;
• restoration of coastal zones;
• marble dust pumping;
• for cleaning various kinds of reservoirs;
• extraction of sand from the bottom of the ocean;
• the pump is also suitable for pumping sand from a well and a well;
• this drainage pump can be useful in the destruction of gold mining tailings, to improve the operation of the well in ball mills;
• on the treatment facilities, for the collection well of concentration plants, as well as in order to remove materials from settling tanks.

This pumping equipment is not intended for pumping, pumping water and other works for cleaning in fire and explosion hazardous conditions.

2 What types of sand pumps are there?

The protection of the flow path determines the division of pumps by type, and also demonstrates the maximum allowable size of solids that the pump can pass:

1. Gummed (PR) Particle size up to 2 mm.
2. Corundated (PC) Particles with a diameter of 1 mm.
3. Created from wear-resistant cast iron (types P and Pb). Pumps of this kind are capable of passing particles of clay, silt, sand and other substances up to 6 mm in size.

Depending on how the shaft is located, horizontal and vertical pumps are distinguished. Horizontal models include models of types PR, P, PB, as well as PK, while vertical models include PKVP and PRVP.

1. Type P pumps are console horizontal single-stage pumps with an impeller for one-way inlet. These centrifugal samples are used for pumping and pumping products obtained as a result of ore dressing and alumina production. The material from which the solid part is made is wear-resistant cast iron. Solution density up to 1300 kg/m³. Permissible cavitation reserve-height below which the designer cannot fall is 2.0 m.
2. The pump type PB is also horizontal and cantilever. But at the same time, centrifugal pumps of the PB type allow you to have a cavitation reserve of 5.0 m.
3. PR differs from previous models in that the main part of the flow part is lined with corundum on an organic binder.
4. Pumps of PKVP and PRVP types are also cantilever pumps, but at the same time they are vertical. They are submersible with supports outside the pumping of water or other liquid.

The strong part in PRVP consists of wear-resistant rubber, and in PKVP - corundum lining with an organic binder.

2.1 Surface and immersion models

Downhole (in particular, sand) drainage pump in its structure can be both surface and submersible.

In the first case, it is a powerful device with a rotor that pumps water or sludge by sucking it through the working chamber. Such pumps are capable of lifting slurry at a depth of up to 10 meters.

Advantages of surface pumping equipment:

• the ability to transport liquids over sufficiently long distances;
• the possibility of continuous long-term work;
• high degree of reliability, as there is no need for immersion in an aggressive water environment.

Flaws:

• high noise level;
• the impossibility of the pump to work deeper than 10 meters.

As for submersible models, this is equipment designed to pump water directly to a well or from a well. During operation, they are immersed under the very thickness of the water and left there until the completion of the process of pumping the well.

A device of this type is more productive than the previous type. Also, their advantage is the ability to work at more serious depths of a well or well (the exact characteristics depend on the specific manufacturer and model of pumping equipment).

Strengths of submersible pumps:

• small size and weight;
• long-term use without maintenance is possible;
• high performance;
• dry protection;
• it is possible to use in automatic mode for a drainage well;

Which type of pump to choose - surface or submersible - depends on the depth at which you are going to work (the process of cleaning, pumping, etc.), at what speed you need to carry out these works. The issue of price is also important, as immersed samples are more expensive.

2.2 How does a screw well pump work?

The screw borehole drainage pump is a type of submersible pump that specializes in pumping water from a well (hence the name), and is one of the most popular examples of sand pumps.

In these pumps, the working element is a broaching screw or an auger (hence the second name - auger). Systems of this type allow them to be used in wells with a high level of contamination. The auger design does not allow sand and other small debris to clog anywhere and block the operation of the pump.

And the fact that when the rotor accelerates, the productivity increases, but the outlet pressure remains practically unchanged, makes it possible to use screw pumps not only for pumping and purifying water from a well or well, but also in production, for example, when pumping oil products.

Screw models have a number of advantages, among them:

1. Convenience of design. Such pumps are extremely easy to operate: no special knowledge is required.
2. Ease of repair. Both mechanical seals and stuffing boxes are designed in such a way that if the need arises, they can be replaced in the shortest possible time without using any additional equipment.
3. Absence of vibrations. Screw pumps create practically no vibrations, despite the high power and a large number of working revolutions. This happens due to the use of rotors with the extraction of hollow parts.
4. Long service life. This advantage "follows" from the previous one: it is precisely from the absence of vibrations that screw pumps are distinguished by a long service life.

2.3 How does a sand pump work? (video)

From the correct choice of pumping equipment for the well, its productivity, durability, and sometimes the operational life of the hydraulic structure itself will depend.

MAIN TYPES OF PUMPS AND THEIR FEATURES

• Vibrating- are more often used in wells, since as a result of vibrations they can not only lift sediment from the bottom, but also damage the walls of the wells
• Centrifugal submersible– more than once I was convinced that this is the best solution for wells. During operation, a minimum of vibrations is formed, the productivity is large enough, as is the height of the water rise, and overheating is excluded due to the design features of the engine
• Drainage or self-priming– their use is relevant for shallow wells or as dehumidifiers for caissons

selection of a pump and equipment for a well, criteria

• Water lifting height- these are the total values ​​of the depth of the well (from the point of immersion of the pump to the surface of the earth) and the height of the highest point of the water intake from the ground level. The coefficient of horizontal movement of water is also taken into account if the hydraulic structure is located at a sufficient distance from the house (20-30 meters)
• Well type(on sand, artesian) and casing material - we have experienced in practice the damage that vibration pumps can cause to a PET pipe or downhole filter
• Volumes of water consumption and maximum total loads
• Well flow rate
• Water quality in the well and the presence of solid impurities in it

I advise you to rely on the experience and qualifications of professionals in this matter. We will select a suitable pump, offer it to you at a dealer price, and carry out professional installation.

Now I will answer the questions that our clients most often ask us.

Which pump is best for a well?

Based on personal experience, I can say that for wells, regardless of their depth, the material of the walls of the casing string and the type of downhole filter, it is better to use centrifugal (vortex) submersible pumps.

Why?

During operation, they do not vibrate, so they do not raise sediment from the bottom, and most importantly, they are not able to damage the walls of the casing string and the downhole filter. They are also highly efficient and, unlike vibratory pumps, can run longer continuously.

Important!

How to choose a pump The basis of choice is the productivity of the well in relation to the consumption volumes (peak and average).

What types of wells do we drill

Advantages of centrifugal submersible pumps

Centrifugal pumps cannot physically overheat, as water passes through the motor, which consists of a rotor freely rotating due to the force of electromagnetism, and a stator. A stream of cold water moves between them, providing natural cooling.

If there is no more than 10-15 meters to the water surface from the surface, you can use self-priming pump, but there are a number of difficulties here, including the need for its additional maintenance and control.

Below I will review the characteristics of several centrifugal pumps in comparison with a vibrating counterpart, so that it is easier for you to understand the difference in performance.

Pump Model	Power	lifting height	Capacity l/h	Immersion depth	Price
Vibration pump BELAMOS BV012, 25 m	300 W	70 m	990 l	3m	2800 rubles
Centrifugal submersible pump Caliber NPCS- 1.5 / 50-550	550 W	50 m	1500 l	5 m	5300 rubles
Centrifugal submersible pump QUATTRO ELEMENTI Deep 1500 Pro 772-531	1500 W	115 m	5460 l	2 m	19500 rubles
Submersible borehole pump BELAMOS TF-60	900 W	60 m	4000 l	5 m	15000 rubles
GRUNDFOS SP 5A-25 3x400V 05001K25 with dry run protection	2200 W	153 m	6500 l	600 m	67000 rubles
Gileks Vodomet PROF 55/75 House (set for automatic autonomous water supply)	900 W	75 m	3300 l	30 m	26000 rubles

As you can see, the characteristics of the pump directly affect its price, but in each price category There are different types of pumps. I have been convinced more than once that only a professional can determine the priority selection criteria.

Common mistakes when choosing and installing a pump

So what not to do?

• “The neighbors have one of these, which means it will suit me too” – classic mistake. Two wells located 20-50 meters apart can vary greatly in flow rate. In addition, it is important to take into account such factors as material, casing diameter, bottomhole filter type, consumption volumes.
• "I'll buy more powerful - in reserve" is another common misconception. First, why pay more? Secondly, a pump that is too efficient can kill a well with a low flow rate by volley pumping. We often had to repair a well, the water quality of which was lost precisely because of the wrong choice of pump
• "I'll do all the calculations myself"- even many of my colleagues who have switched to free bread do not always make calculations with high accuracy - there are too many factors and coefficients to take into account. Better leave it to the professionals

Classic when installing pumping equipment yourself:

• Incorrect choice of installation depth
• Incorrect fastening of the pump on the carrying cable, as a result of which part of the load falls on the power cord
• Incorrect connection to the mains

IMPORTANT!

Do-it-yourself installation - is it necessary? I strongly recommend not to regret one or two thousand rubles for the work of specialists who will make all the calculations and carry out the installation correctly.

The optimal installation depth of the pump between the bottom and the water surface for standard water intake

Here we completely turn off the fantasy - the installation depth of the pump is a constant value recommended by the equipment manufacturer. The nuances take place only for high-performance models with a large installation depth. In this case, at least one meter of water column must remain to the bottom of the well.

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At what depth should a submerged pump be installed for pumping a well?

At the stage of pumping a well, we always pursue the same goal - to pump out sand and turbidity from the bottomhole. It is irrational to do this with a centrifugal pump, since they are very sensitive to the presence of fine solid impurities in the water.

Therefore, for pumping (if possible), a vibration pump with a lifting height of up to 80-110 meters is used.

They are not afraid of sand, and they can be installed almost at the very bottom in order to pump out unnecessary dirt from the well to the maximum.

If the well is pumped by a centrifugal pump, then at least one meter must remain to its bottom, as required by the instructions for the equipment.

Dry running protection for borehole pump

Imagine such a situation - you are not at home, a tap leaked, and as a result, the pump pumped out all the water from the well and continued to work.

The result is the replacement of expensive equipment, since the plastic impeller will not withstand high temperatures. If it is protected from dry running - relays, special floats and automation, then such incidents are excluded.

Drilling cost calculation
fine sand wells

Select your region: Solnechnogorsky District Istrinsky District Dmitrovsky District Odintsovsky District Krasnogorsky District Klinsky District Narofominsky District

If you are not in your area, please call us and we will make an individual calculation.

Casing pipe HDPE Pipe PVC-U 129 mm

Filter: For HDPE (stainless steel). For PVC-U (slotted with spraying).

Cable conduit for borehole pump. submersible pump cable extension for a well

I can assure you that you will not find a pump that comes with an electrical cable of the same length as the lifting height for which it is designed, because 120 meters of cable is a lot. The maximum that the manufacturer offers is 15-30 meters.

How to be? Ramp up! I categorically do not recommend doing this on your own, but if you still decide, then here are some of my professional tips:

• Use a submersible cable- yes, it is a little more expensive, yes - there will be no disaster if you take a regular one, but if for some reason damage occurs in a simple cable, the consequences can be serious. Submersible is designed for direct contact with water, it is better
• Connection must be at maximum height from the water surface - do not cut the cable just before entering the pump - cut the plug
• Use special connectors and epoxy resin for hermetic sealing of the joint or special heat shrink sleeves
• Use an appropriate cable section corrected for resistance along the length

In general, everything is not simple here either, so I recommend leaving this work to specialists.

Pump and automation for sand wells

Wells for sand in the Moscow region are used mainly for irrigation in garden plots.

The flow rate in such wells is usually low and variable, and the water quality is low, as it contains a lot of sand.

The optimal solution is a submersible vibration pump. It is affordable, picky about water quality.

The subtleties of installing a vibration pump
When installing the pump, it is important to fix it so that it does not touch the walls of the casing string or the bottom filter, otherwise vibrations can lead to mechanical damage to the equipment or the structure itself.

We automate the system based on the vibration pump

The easiest option to automatically turn off such a pump is a switch with a timer.

If you know the flow rate of the well, and it is, for example, 500 liters per hour, and your pump pumps this volume in half an hour, then simply set the timer for 20 minutes to select the desired volume of water, and go about your business.

You can also use a float system.

Inefficient pump for a well with a low flow rate

Wells with low flow rates present a serious problem. I often came across the fact that people are looking for low-performance pumps as a solution, but you will not find them, because even the smallest pump has a minimum capacity of 450 liters per hour, and if the well flow rate is 250 liters, then this discrepancy is almost doubled.

What to do? I suggest the following solution:

• We install a storage tank for 500-1000 liters in the basement or in the attic. If in the basement, then with a membrane to maintain pressure, if in the attic, then without
• We connect automation to the tank in order to constantly keep it full
• We install automation to protect against dry running in the well

What do we get as a result? Your country house provided with water, because even with a very strong desire, you will not make a salvo discharge of 500 liters. The volume of water in the bathroom is 200 liters, one wash in an automatic machine is 60-80 liters, a toilet tank is 8-15 liters.

The pump works in segments of 5-7 minutes, if necessary, replenishing the tank or stopping work if the water in the well goes below a certain level. Problem solved!

Is a vibration pump harmful to a well?

Harmful, and I'll tell you more, if installed incorrectly, it will destroy the well faster than you think. Vibration is to blame. Sometimes the use of a centrifugal type pump is irrelevant, and in these cases it is important to at least follow the installation rules:

• Install the vibration pump at least 1.5 meters above the bottom of the well
• The pump should not touch the walls of the casing - it should hang freely in the water column
• I also recommend using models with an upper water intake - this way it will disturb the face less

Water hammer when turning on the pump and strong shock when turning it off

Water hammer in the water supply system not only leads to the failure of plumbing, but also the pumping equipment itself. This phenomenon occurs when the pump is directly wedged into the system.

It is easy to avoid this - for this I advise you to definitely use membrane accumulators. They dampen sudden pressure surges in the system, extending the life of your expensive plumbing equipment.

Features of maintenance of pumping equipment

During my career, I have come across this issue many times. In fact, in the case correct installation and operation of the submersible pump does not require additional maintenance. Some models require prelubrication individual elements just before installation - nothing more.

When using centrifugal submersible pumps for pumping water with sand impurities, repair may be required - replacement of impellers. All these works should be carried out only by a professional - on your own you can only do harm.

Pump modeAlways follow the operating mode recommended by the manufacturer, do not overload the pump, then it will work properly throughout the entire operating period.

Individual water supply of a private house cannot be imagined without pumping equipment that delivers water to the consumer; for this, several modifications of electric pumps with different operating principles are used. One of popular types is a screw pump for a well, mainly used for water intake from sources whose water basins are located on sand.

Screw (screw) electric pumps, represented on the market by submersible models, are produced by many leading domestic and foreign manufacturers of pumping equipment, their cost does not go beyond the average price for this category of units. In order to choose the right electric pump, several classes with different operating principles are considered, while a screw borehole pump under certain conditions has some advantages over other varieties.

Rice. 1 Popular models screw pumps

Pumps installed for pumping water, depending on the location relative to the water source, are conditionally divided into two groups: surface and submersible.

The first ones are installed on the ground next to the well, a pipe or a pressure hose is lowered into the mine for water intake, while the maximum suction depth (location of the water mirror from the surface soil layer) does not exceed 9 m. technical characteristics with a maximum volume of pumped liquid of 5 m 3 / h and a head of about 50 m, the efficiency of devices is not more than 50%. Usually surface aggregates are included in the package of pumping stations, which are a single unit, in which, in addition to the electric pump, a hydraulic accumulator and a pressure gauge are installed.

Submersible pumps are presented on the market in several varieties with different operating principles, depending on the design, cost and quality of well water, they are used in the household for a variety of purposes.

Rice. 2 The principle of operation and design of a centrifugal electric pump

Centrifugal

Centrifugal electric pumps occupy a leading position among other types due to the following design features arising from their operating principle - the inlet water flow enters the impeller axis and is displaced by its blades through a pipe on the side of the casing. Thus, it became possible to connect any number of centrifugal wheels with chambers (stages) in series with an increase in pressure at each stage.

The pressure in household modifications reaches 200 m or more, the throughput is up to 20 m 3 / h, the efficiency increases with an increase in the dimensions of the pump unit and reaches 65% for household high-quality models of Danish and Italian production.

High-quality centrifugal electric pumps from world-famous European concerns are equipped with internal protection against overheating of the winding in the absence of coolant, have a built-in check valve, expensive models are equipped with an electronic shaft speed control unit depending on the volume of water consumption using pulse-width modulation. This solution makes it possible to reduce the dimensions of pumping equipment, practically eliminating them, as well as save electricity, reducing its consumption by 40%.

Consumers are in high demand for centrifugal pumps from the world's best manufacturers of pumping equipment: Grundfos (Denmark), Pedrollo, Speroni (Italy), Wilo (Germany), Russian brands Belamos, Aquarius, Unipump (manufactured in China). It should be noted that the difference in prices between the products of leading foreign companies and products of Russian or Chinese production is quite significant, a high-quality electric pump from Grundfos costs about 1000 USD, while a domestic or Chinese pump with similar characteristics can be purchased for 200 USD. e.

Rice. 3 Vibrating electric pump - device

Vibrating

The manufacturing technology of vibration electric pumps has not undergone significant changes since Soviet times, so there are many Russian brands on the market, there are products of Ukrainian and Belarusian production, and Chinese models are present in sufficient quantities.

The difference between vibrating electric pumps from other types is the absence of rotating parts and, accordingly, bearings, the principle of operation is based on the reciprocating movement of the coil armature when applied to its winding alternating current. A rod with a piston that draws in water is welded to the armature of the electromagnet; a check valve is installed near the inlets to prevent the outflow of liquid into the source.

Vibrating models have a rather low efficiency of about 35%, the maximum volume of the pumped liquid does not exceed 1.5 m 3 / h, the head is not more than 80 m.

These characteristics are considered not too high to provide water to a private house with even one person living, therefore, vibrating pumps are mainly used for household purposes: for irrigating garden beds, filling pools, ponds, various types of containers with water, and carrying out drainage work.

Since vibrational species are not too sensitive to a high content of suspended particles in water, they are often used for pumping wells and wells, extracting turbid water with clay-sand fractions from them.

Vibrating pumps are classified as products of the budget price category, their minimum cost is about 20 USD, the average price of a typical high-quality unit is 30 USD. On the market, vibropumps are represented by a large number of domestic (Brook, Malysh, Summer Resident, Aquarius, Whirlwind, Bison) and Chinese (Oasis, Patriot) brands.

Rice. 4 Peripheral pump - design

Vortex

In vortex varieties, water is sucked in through the side opening of the hydraulic part of the housing by the blades of the impeller and then thrown out through the discharge pipe located next to the suction channel.

A feature of vortex pumps is the small distance between the impeller of the petal wheel and the walls of the working chamber, which is necessary to reduce hydraulic losses, so the units operate only in clean water. The highest pumping volume of household electric pumps of the vortex principle of operation does not exceed 5 m 3 / h, the pressure reaches 100 meters, the efficiency is not more than 50%.

In vortex models for domestic use the feed wheel is located at the top near the outlet, and the electric motor with a vertical shaft, on which the vortex wheel is mounted, is installed below.

Liquid suction occurs through a perforated filter located around the impeller - by its location in the upper part near the outlet pipe, it is easy to determine the vortex principle of operation of the electric pump.

On the market, vortex pumps are less common than centrifugal models, domestic producers represented by the brands Belamos, Whirlwind, Unipump, Italian is popular submersible pump Pedrollo Davis.

Rice. 5 Screw pump - internal organization and screw assembly

Screw (screw)

Electric pumps that suck in and push water using the Archimedean screw method are called screw pumps, this is the second most popular group after centrifugal pumps. In household appliances, the screw is located in the upper part and is connected through an adapter to the motor shaft.

The advantage of screw electric pumps is the simplicity of design and the possibility effective work with cloudy and dirty water, as well as with viscous media, thanks to the latter feature, screw modifications are widely used in industry for pumping oils and refined products.

There are no screw electric pumps from world trade leaders (Grundfos, Wilo, DAB, Pedrollo, Speroni) on sale, the units are represented by well-known Russian brands Belamos, Jemix, Whirlwind, Unipump Eco Vint, Aquarius, Sturm group of companies.

On sale you can find screw electric pumps and less popular brands of Russian and Chinese production: Host, Alba, Oasis, Patriot, Vodotok, as well as Sprut from the Ukrainian company Varna from Kharkov.

On a note: Distinctive feature vortex electric pumps of domestic production - perforated rectangular holes in the upper third of the body through which water is taken.

Rice. 6 The principle of operation of the screw pump

The principle of operation and design of the screw pump

In a standard auger household electric pump, the working screw is made in the form of a spiral pin made of corrosion-resistant material, which is chrome-plated steel, stainless steel or high-strength plastic. The fluid sucked in by the rotating screw enters the technical polymer cage and is then pushed out into the upper outlet pipe of the electric pump.

A screw electric pump used in everyday life consists of the following main components (Fig. 7):

1 — The electrical part with a vertically located single-phase electric motor with a dry rotor and an oil-filled chamber separating the engine compartment from the hydraulic part, a starting capacitor is located inside the lower part of the housing.

2 - The hydraulic part consists of a housing, a water intake filter and a working auger rotating in a holder made of an elastic polymer (rubber) - a screw and rubber coupling assembly pushes the liquid entering the housing through perforated holes 3 to the outlet pipe.

3 - The intake part is a stainless steel cylinder with holes made in the side walls for drawing in water.

4 - On the top cover of the pump, made of brass or stainless steel, there is an outlet pipe and lugs.

5 - The outlet pipe is made with an internal thread standard diameter 1 inch, a check valve and a lifting sleeve are attached to it.

6 - A nylon or metal cable in synthetic protective insulation is tied to the eyes.

Rice. 7 Structural arrangement of the screw pump

Distinctive features and parameters of screw electric pumps

A typical screw pump for wells used in individual water supply has the following technical parameters:

• Power supply voltage: variable 220V ± 10%, with a frequency of 50 Hz.
• Temperature range of pumped liquid: from 0 to 35 °С.
• Pumped water pH: 6.5 - 8.5.
• Working temperature range external environment: from 0 to +40 °С.
• Minimum immersion depth under the water mirror: 0.5 m.
• Permissible volume of mechanical particles in the pumped water: - no more than 500 g/m 3 , the content of fibrous materials in the liquid is not allowed.
• Permissible diameter of mechanical fractions: - 1 mm.
• Maximum pressure: 3 m 3 / h, for most models it does not exceed the threshold of 1.5 m 3 / h.
• Limit head: up to 200 m, this indicator is a rare exception, most modifications create a head pressure of no more than 100 m.

Rice. 8 Key Features of Chinese Oasis

The main advantages of screw electric pumps:

• Low cost, the price of the cheapest models is about 80 USD, in general, all models are cheaper than centrifugal types.
• Simplicity of design. The working part consists of a screw and a rubber cage, they are easy to maintain and, if necessary, simply replace, which makes the repair of auger units very simple.
• A screw pump for a well, due to its principle of operation, can transport liquid with large fractions of sand and clay deposits - this is its main advantage. A submersible screw pump is preferably used for water intake from well sources on sand, often with a high content of suspended particles of clay and sand. Although their parts are mechanically attacked by solid particles, the life of the screw pump in turbid sources will be longer than that of centrifugal models.

The disadvantages of screw units include the mediocre quality of many products (chrome-plated screw, quickly abraded clip) and not too high technical characteristics, noticeably inferior to centrifugal types, as well as low efficiency, not exceeding 45%.

Application area

We can say that a screw pump for a well, due to the ability to pump out dirty water, is the leader in the number of areas in which it is used in household chores. A screw borehole pump is purchased for:

• arrangement of water supply for cottages and wells;
• filling artificial ponds, pools, tanks for heating and drip irrigation;
• irrigation of vegetable gardens, orchards and any areas with plants in the garden;
• drainage in case of flooding of basements, cellars and basements in the house;
• pumping wells after drilling, some professionally engaged firms specifically purchase screw pumps for this purpose;
• cleaning wells and wells from silt deposits.

Rice. 10 Parameters of screw pumps of the Unipump Eco Vint series

Well installation rules

To immerse a screw electric pump into the well, either an adapter is used, to which a cable is tied and a water supply pipeline coming from the unit is attached. Usually, before diving, tie the pressure hose, power cable and retaining cable together with insulating tape or plastic ties, the following rules are observed during installation:

• Water-lifting pipes can be selected from low-pressure polyethylene (HDPE), steel or flexible elastic polymers, the main condition is the ability to withstand the maximum pressure in the system and an internal bore diameter not lower than the thread size inside the outlet pipe.
• When using a flexible hose, make sure that there are no kinks or twists.
• For lowering and lifting, use only a nylon or metal (stainless) cable, it is forbidden to hang the unit by an electric cable.
• Before diving, make sure that the inner diameter of the casing string is higher than the outer dimensions of the pump casing together with the electric cable, and that the pipes do not have bends or narrowed sections.
• It is not recommended to place the power cable in a coiled coil - this leads to its overheating and melting of the insulation.
• The minimum distance of the pump from the bottom of the well is 0.5 meters, the optimal distance is 1 m.
• It is forbidden to operate the pump on a closed tap - this will lead to its failure.
• Mandatory installation in the control system, even if there is an internal protective automation against overheating of the winding.
• When installing modifications that do not have a built-in check valve, it is installed on the outlet pipe in front of the water-lifting pipeline.

Rice. 10 Scheme of installation and connection of the screw unit

When comparing which borehole pump is better: centrifugal or screw, there is no definite answer, since the scope of these pumping units is slightly different. Screw electric pumps are usually used in situations where it is necessary to work with contaminated water, while due to their relatively low technical characteristics, the well should have a shallow depth or be located closer to an individual house. It is impossible to find European-made screw pumps on the domestic market, all goods are supplied to the distribution network by domestic and Chinese firms, so user reviews regarding the quality and materials for manufacturing screw units are contradictory.

Boreholes are increasingly replacing wells as water abstraction sources. To extract water from them, special submersible pumps are needed, the range of which is wide on the market. To quickly understand the models, namely their characteristics, and then decide which unit to purchase, study our rating.

Pumps for wells of which company to choose

On the modern market well pumps there are many noteworthy manufacturers.

1. Wilo is a leading German corporation whose pumping units are sold all over the world. household electrical High Quality produced since the distant 1872.

2. Aquario is a trademark (Italy), the brand of which is on many high-quality electric pumps sold in the CIS countries.

3. JILEX is a successful manufacturer of water pumping equipment - founded in 1993. Production facilities are located in the city of Klimovsk near Moscow.

4. Pedrollo is an Italian company that has been producing high-quality electric pumps since 1974. Well proven advanced technologies and qualified personnel.

5. Aquarius is a well-known trademark from the Ukrainian manufacturer Promelectro-Kharkov. Since 1995, the company has been producing competitive products for water transportation.

6. ESPA is a popular Spanish company specializing in innovative pumping technology. The industrial business was opened in 1952.

7. VORTEX is a leading Russian brand, known primarily for high-quality pumping equipment. Products under this name have been produced since 1974 at a plant in Kuibyshev. Now production has moved to China.

Rating of the best borehole pumps

• Demand for different models based on popularity, rating and positive reviews.
• Type of submersible unit (screw, vortex, centrifugal) and method of its installation (vertical, horizontal).
• Type of well (on sand, on limestone).


• Purpose of the transported liquid.
• Technical parameters (immersion depth and head, flow rate and power, level of protection and noiselessness, weight and size) and their veracity under operating conditions.
• Materials used in the manufacture of the hull, assemblies and parts.
• Ease of operation and maintenance, as well as the level of automated control and management.
• The manufacturing company and its status in the market.
• Warranty obligations and quality of customer service.
• Real service life.
• Total cost (pump + installation + potential repair).

The best electric pumps for wells 10 m deep

Q=2.40 m3/h

DAB IDEA 75M is a quiet, thermally protected vortex pump that works in a vertical position. There should be up to 40 g of sand per 1 m3 of pumped water.

Advantages:

• immersion / flow / head: 10 m / 2.40 m3 / h / 39 m;
• power (P) / voltage (U): 550 W / 220 V;
• D outlet holes: 1";
• network cable: 15 m;
• price: 15.5 ... 20.0 thousand ₽;
• unpretentious in work;
• good combination technical parameters and energy consumption.

Flaw:

• poorly finished inner edges can stop the rotation of the brass wheel.

The unit is highly rated in reviews - small technical flaws are not significant, in addition, they are easily corrected.

Q=3.00 m3/h

Elpumps BP 1/4 is a multi-stage centrifugal model with an improved cooling system. The installation is vertical, the amount of sand is up to 40 g/m3, the body is made of stainless steel, the impeller is made of bronze.

Advantages:

• head / immersion / flow: 55 m / 10 m / 3.00 m3/h;
• P/U: 1300W/220V;
• Outlet D: 1";
• power cord: 20 m;
• price: 18.4 ... 19.2 thousand rubles.

Flaw:

• over time, the bolts in the filter area loosen.

The vast majority of correspondents agreed: the Hungarian electric pump is well made and will last a long time.

Q=5.10 m3/h

Elpumps BP 10 is a vertically mounted centrifugal device that pumps liquid with a solids weight of 40 g per cubic meter. In the presence of thermal protection and cutting nozzle.

Advantages:

• flow / head / immersion: 5.10 m3/h / 60 m / 10 m;
• P/U: 1400W/220V;
• Outlet Hole Ø: 1¼";
• network wire: 20 m;
• price: 18.0 ... 2.0 thousand ₽;
• The body is made of stainless steel.

Flaw:

• filter clogs over time.

Most of the reviews are positive, and the filter is simply pumped with water.

Electric pumps for wells 15 m deep

Q=1.20 m3/h

UNIPUMP ECO VINT1 is a low-speed vertical unit operating at liquid temperatures up to 35 °C.

Advantages:

• head / immersion / flow: 73 m / 15 m / 1.20 m3/h;
• P/U: 370W/220V;
• Outlet Ø: 1";
• network cable: 15 m;
• price: 4.9 ... 7.6 thousand rubles.

Flaws:

• rusty gears;
• the screw is unreliably designed - it works intermittently.

Reviews are largely positive, but not everyone is satisfied with the quality of the materials used.

Q=2.50 m3/h

Belamos 3SP 90/2.5 is a vertically mounted submersible device protected from overheating. It works with clean water, the amount of sand in 1 m3 of which should not exceed 40 g.

Advantages:

• delivery / immersion / head: 2.50 m3/h / 15 m / 90 m;
• P/U: 1400W/220V;
• D outlet holes: 1";
• network cable: 20 m;
• price: 7.5 ... 12.7 thousand rubles;
• main parts in stainless steel.

Flaws:

• not yet discovered.

Consumers are satisfied with the equipment - the pressure and performance are satisfied, weak spots not identified.

Q=4.50 m3/h

Elitech NG 900-60 is a Russian-Chinese centrifugal electric pump, a feature of which is the control unit. Equipped with an electronic switch and a protective complex against excessive heating. Suction system - 9-stage.

Advantages:

• immersion / productivity / head: 15 m / 4.50 m3 / h / 60 m;
• P/U: 900W/220V;
• D nozzle outlet: 1 ";
• network cord: 20 m;
• price: 9.5 ... 12.9 thousand rubles;
• the impeller is made of technopolymer.

Flaw:

• unreliably and inconveniently attached to the body of the cord leading to the launcher. Over time, it may break.

Reviews about the model are mostly positive: its technical characteristics and performance indicators turned out to be at a good level.

Electric pumps for wells 20 m deep

Q=2.70 m3/h

Aquario ASP 1E-30-90 is a centrifugal submersible technical product located vertically in the well. There must be ≤ 120 g of sand in a cubic meter of water.

Advantages:

• immersion / head / productivity: 20 m / 32 m / 2.70 m3 / h;
• P/U: 450W/220V;
• Outlet D: 1";
• network wire: 30 m;
• price: 10.1 ... 13.5 thousand rubles;
• silent in operation.

Flaw:

• after a few years of good service, the motor may burn out.

Judging by the user reviews, the unit is good, but not eternal - over time, the motor cannot withstand overloads.

Q=5.10 m3/h

UNIPUMP ECO AUTOMAT is a centrifugal vertical unit with thermal protection. The content of mechanical inclusions in water should be up to 0.1 kg per m3.

Advantages:

• head / immersion / productivity: 56 m / 20 m / 5.10 m3 / h;
• P/U: 750W/220V;
• Outlet nozzle Ø: 1 ";
• network cable: 20 m;
• price: 14.3 ... 19.2 thousand rubles;
• non-return valve and pressure switch are pre-mounted in the structure;
• quietly pumps liquid;
• if the quality assembly, it works flawlessly.

Flaws:

• sensitive to power surges;
• automatics periodically work incorrectly;
• sometimes the bearings get stuck.

There are more pros than cons in the reviews. It should be noted that some of the dissatisfied transported dirty water.

The best electric pumps for wells 25 m deep

Q=4.20 m3/h

ESPA Neptun fl60 65M is a centrifugal vertical instrument with many additional options: smooth start of the motor, anti-thermal protection, suction filter. The weight of sand per 1 m3 of water should not exceed 100 g.

Advantages:

• head / productivity / immersion: 92 m / 4.20 m3 / h / 25 m;
• P/U: 1500W/220V;
• Outlet Ø: 1 ";
• electric cable: 30 m;
• price: ≈41.8 thousand rubles;
• engine running is not heard.

Flaw:

• the cutting attachment is dull.

Based on the reviews, the unit worthy of attention buyers.

Electric pumps for wells 30 m deep

Q=1.92 m3/h

PATRIOT SP 3250S is a vertical submersible pump that creates high head and pressure in the network. It passes particles up to 2 mm in size through its filter.

Advantages:

• productivity / immersion / head: 1.92 m3 / h / 30 m / 100 m;
• P/U: 500W/220V;
• D fitting outlet: 1";
• electric wire: 18 m;
• price: 5.3 ... 7.3 thousand rubles;
• can pump contaminated liquid.

Flaws:

• a crookedly welded clamp does not allow the threaded connection to be made correctly;
• After connecting to the network, it starts working after a pause.

From the reviews it is clear that the device is solid, but not without some assembly curiosities.

Q=3.60 m3/h

Aquarius BTsPE 0.5-32U is a vertical centrifugal type unit with a smooth start of the motor and protection of the latter from overheating.

Advantages:

• productivity / head / immersion: 3.60 m3 / h / 47 m / 30 m;
• P/U: 820W/220V;
• D Outlet Fitting: 1";
• electric cord: long;
• price: 8.2 ... 13.0 thousand rubles;
• remote start capacitor;
• reliable - even without a voltage stabilizer that can be delivered.

Flaw:

• performance depends on the "behavior" of the voltage;

The conclusion, based on the reviews: household appliances fully meet the expectations of consumers - it works without failures.

Q=6.60 m3/h

JILEX Waterjet PROF 110/110 is a vertically mounted submersible pump, the filter of which retains particles larger than 1.5 mm. There is protection against "zero load".

Advantages:

• immersion / flow / head: 30 m / 6.60 m3 / h / 110 m;
• P/U: 2200W/220V;
• outlet fitting Ø: 1¼ ";
• Electric cable: 70 m;
• price: 18.6 ... 45.0 thousand rubles;
• frequencies are regulated, electricity is saved.

Flaws:

• a bit pricey;
• not always on sale.

The reviews are wonderful: unpretentious in operation, the declared indicators coincide with the real ones, it works 100%.

The best electric pumps for wells 35 m deep

Q=2.40 m3/h

VORTEX CH-100V - a vertical vortex apparatus with a diameter of 10.2 cm. Pollution in the water should not be more than 40 g per cubic meter.

Advantages:

• immersion / flow / head: 35 m / 2.40 m3 / h / 100 m;
• P/U: 110W/220V;
• outlet fitting Ø: 1 ";
• electric cable: 20 m;
• price: 7.1 ... 7.6 thousand rubles.

Flaws:

• bolts rot in six months of service;
• interruptions with the "on-off" mode;
• customer service is not working well.

As some correspondents write: "at first it shakes well, and then in different ways." Others praise.

Q=5.10 m3/h

Oasis SN 85/70 is a quiet model with a durable valve and piston system. It is installed vertically in wells, the inner diameter of which does not exceed 9 cm. 100 g per cubic meter is the maximum sand content in the transported liquid.

Advantages:

• immersion / head / flow rate: 70 m / 35 m / 5.10 m3/h;
• P/U: 750W/220V;
• Discharge pipe D: 1½ ";
• electric cable: 30 m;
• price: 9.5 ... 10.5 thousand rubles.

Flaws:

• Not detected.

The well-made Chinese model did not receive a single negative feedback, including on a specialized forum.

Electric pumps for wells 40 m deep

Q=3.60 m3/h

PRORAB 8776 BP/65 is a vertical household pump designed for installation of a water supply system in country house. Equipped with a silent electric motor, thermal sensor, built-in capacitor. It pumps water with a significant amount of impurities: 0.2 kg/m3.

Advantages:

• flow / immersion / head: 3.60 m3/h / 40 m / 106 m;
• P/U: 110W/220V;
• D discharge pipe: 1¼ ";
• electric cord: 65 m;
• price: 16.0 ... 20.2 thousand rubles;
• stainless body.

Flaw:

• high pressure can damage the mixers.

The reviews also lack laudatory odes and serious complaints about the Russian product assembled in China. To buy or not to buy is up to consumers.

Q=6.00 m3/h

Pedrollo 4BLOCKm 4/14 is a monoblock vertical unit with thermal protection and a soft start motor. A non-return valve is installed in the discharge part of the body. The weight of sand in water is limited to 0.15 kg/m3.

Advantages:

• flow / head / immersion: 6.00 m3/h / 92 m / 40 m;
• P/U: 1100W/220V;
• D discharge fitting: 1¼ ";
• electric cable: 20 m;
• price: 32.4 ... 49.4 thousand rubles;
• widely used as an integral part of automatic water lifting stations.

Flaw:

• is relatively expensive.

The reviews note that the model is crammed with everything necessary for quality work devices and systems. And this played a positive role in its popularity.

Electric pumps for wells 45 m deep

Q=8.40 m3/h

ESPA Neptun fl120 60M is a centrifugal monobloc pump with soft start motor, suction filter and protective device from overheating. It is contraindicated for the device to pump water with an excessive amount of sand - the limit is 100 g / m3.

Advantages:

• head / flow / immersion: 63 m / 8.40 m3 / h / 45 m;
• P/U: 1900W/220V;
• D discharge fitting: 1 ";
• cable: 30 m;
• price: ≈43.6 thousand rubles;
• quiet running, long service life.

Flaw:

• high price.

Reviewers have a high opinion of this model with high performance - breakdowns at the time of writing the reviews did not happen.

The best electric pumps for wells 50 m deep

Q=3.60 m3/h

VORTEX CH-50N is a unit with a lower water intake, the body of which is made of stainless steel. To protect the engine from overheating, a thermal relay is provided.

Advantages:

• head / immersion / flow rate: 50 m / 50 m / 3.60 m3/h;
• P/U: 600W/220V;
• Ø discharge pipe: 1 ";
• wire: 20 m;
• price: 9.8 ... 11.3 thousand rubles.

Flaw:

• after several years of operation, the motor fails, the impeller key is deformed, the parts are loosened, oil flows out.

From the reviews, the conclusion is obvious that the water-lifting equipment works well, but not for long. Although, it should be emphasized, the comments were quite controversial.

Electric pumps for wells 55 m deep

Q=22.50 m3/h

Pedrollo 4SR 15/10-F is a powerful downhole unit that can be installed both vertically and horizontally. The motor and pump are connected via a caliper. 150 g of sand per 1 m3 of water is allowed.

Advantages:

• depth / productivity / head: 55 m / 22.50 m3 / h / 60 m;
• P/U: 3000W/380V;
• Ø discharge pipe: 2 ";
• cord: 1.5 m;
• price: ≈73.1 thousand ₽;
• special hydraulic design;
• knots and details are made of strong corrosion-proof materials.

Flaws:

• weak pressure, not enough pressure;
• for irrigation large area not enough debit.

Users generally speak positively about the technical device, while they blame the quality of drilling robots.

Electric pumps for wells 60 m deep

Q=4.20 m3/h

ESPA Neptun fl60 45M is a vertical multistage centrifugal design pump. 0.1 kg of sand does not impede the operation of mechanisms, which also have abrasive resistance.

Advantages:

• depth / head / flow rate: 60 m / 61 m / 4.20 m3/h;
• P/U: 1200W/220V;
• Ø discharge fitting: 1 ";
• rope: 30 m;
• price: ≈36.3 thousand ₽;
• internal cooling of the motor, complete tightness;
• noiselessness, efficiency, durability.

Flaw:

• when using different plumbing fixtures, pressure surges may occur. After the relay trips, the situation changes, but does not improve.

ESPA equipment is considered by users to be one of the best, and deservedly so. As for the above misunderstanding: you need to carry out diagnostics - it is likely that this is a minor automatic nuisance that is easy to fix.

The best electric pumps for wells 70 m deep

Q=2.00 m3/h

DAB MICRA HS 302 – 6 is a vertically directional multistage pump with frequency control and built-in dry-running protection. Regulated weight of sand in 1 cubic meter of water: up to 30 g.

Advantages:

• head / depth / productivity: 60 m / 70 m / 2.00 m3/h;
• P/U: 1600W/220V;
• discharge fitting Ø: 1 ";
• network cable: 1.4 m;
• price: 46.6 ... 53.9 thousand rubles;
• in the manufacture of various components are used: stainless steel, bronze and technopolymers.

Flaws:

• with permitted installation in horizontal position failures in engine cooling are possible;
• technically difficult to maintain;
• expensive.

The device in question rarely fails, is durable, pays for itself by extracting pure artesian water in the limestone layer.

Q=5.52 m3/h

Storm! WP9711DW is a twin-shaped vertical vortex electric pump that passes sand fractions up to 2 mm in size. The ratio of impurities and water: 1/400.

Advantages:

• head / flow / depth: 108 m / 5.52 m3 / h / 70 m;
• P/U: 1100W/220V;
• D discharge pipe: 1¼ ";
• network wire: 65 m;
• price: ≈22.3 thousand ₽;
• Easy to operate, durable body.

Flaws:

• Not detected.

From the reviews, we can conclude that when pumping out artesian waters serious problems does not occur.

Electric pumps for wells 80 m deep

Q=2.70 m3/h

Belamos TF3-60 is a vertically mounted pump protected against overheating, which is capable of pumping water with a maximum amount of sand: 180 g/m3.

Advantages:

• depth / head / capacity: 80 m / 60 m / 2.70 m3/h;
• P/U: 800W/220V;
• D pressure fitting: 1¼ ";
• mains cord: 35 m;
• price: 10.4 ... 16.4 thousand rubles;
• production materials: stainless steel, brass, polycarbonate.

Flaw:

• may be depressurized with consequences.

Reviews are mostly positive. Much is worth the recommendation of this model by a professional driller.

Q=4.80 m3/h

Aquatech SP 3.5” 4-65 is a vertical unit made of stainless steel on the outside. It has a starting capacitor, a check valve, a protective thermal relay.

Advantages:

• productivity / depth / head: 4.80 m3 / h / 80 m / 65 m;
• P/U: 950W/220V;
• Ø discharge pipe: 1¼ ";
• network cable: 40 m;
• price: 9.3 ... 13.4 thousand rubles;
• quality assembly.

Flaws:

• insufficient pressure.

Consumers claim that the pump is solid.

The best electric pumps for wells 150 m deep

Q=6.50 m3/h

Wilo TWU 3-0501-HS-E-CP is a vertically or horizontally installed multi-stage unit with a frequency converter and thermal protection. Water should be as clean as possible - only 50 g of impurities are allowed per 1 m3.

Advantages:

• head / depth / flow: 26 m / 150 m / 6.50 m3/h;
• P/U: 600W/220V;
• pressure connection Ø: 1 ";
• network electric cable: 1.75 m;
• price: 66.2 ... 95.6 thousand rubles;
• multifaceted protection; smooth start; rewinding of the motor stator is possible;
• built-in valve parts in contact with the liquid are corrosion resistant;
• many additional options.

Flaws:

• small pressure;
• installation costs a little less than the electric pump itself.

According to reviews: many pluses and a minimum of minuses - an elite high-quality pump that pumps premium water.

What borehole pumps to buy

1. If you need to irrigate agricultural crops in large areas, 4SR 15/10-F from Pedrollo will do.

2. For a small family living in a house with several taps, ECO VINT1 from UNIPUMP or MICRA HS 302 - 6 from DAB will do.

3. For an average family living in a house with a complete set of plumbing and household appliances, the best option would be TF3-60 from Belamos or BTsPE 0.5-32U from Aquarius.

4. Owners of houses with a pool and a fountain can purchase a Water cannon PROF 110/110 from JILEX or 4BLOCKm 4/14 from Pedrollo.

5. For residents of several cottages with one well, Neptun fl120 60M from ESPA is suitable.

6. Customers who are satisfied with the quality of fluid from a sand well can install Elpumps BP 1/4.

When buying, you also need to take into account that for an expensive downhole unit there is always a cheaper, but not inferior in quality, alternative.

vyboroved.ru

Negative consequences of well pollution during operation

In the vast majority, not only after drilling, but also during operation or after a long downtime, pumping a well is most often necessary for sandy species. The bottom of their aquifer usually consists of sand, clay or pebbles, silting leads to the following negative consequences:

Reducing the depth of the water source

This can have negative consequences for submersible electric pumps located at a small distance from the bottom - filters and components of the working mechanism supplying water will begin to clog with dirt, which will lead to an accelerated failure of pumping equipment.

Water quality is deteriorating

In addition to the fact that the silted bottom approaches the water-sucking units, the rising water, passing through the silted layer, carries along small particles of dirt, which contribute to the turbidity of the liquid. Water becomes unfit for drinking and domestic use, and it becomes too expensive to clean it with filters.

Debit is falling

The water pressure is prevented by a layer of dirt formed during the silting process, which resists its passage. Water may simply not be enough for domestic needs if the pump pumps out all the water from the well.

The water level is dropping

A drop in static and dynamic levels is a consequence of a change in flow rate and can lead to dry running of operating electric pumps.

These negative consequences do not appear immediately and serve as signs indicating the need to pump the well source.

Requirements for electric priming pumps

Not every electric pump pumps out contaminated water, for example, the answer to the question - “is it possible to clean the well with vortex views?” will be negative. Vortex models due to design features (small gaps between the impeller of the vortex wheel and the walls of the working chamber), they are absolutely not intended for working with contaminated water. When choosing the right pumping equipment, the following criteria should be followed:

Well Compliance

A pump for pumping a well must be suitable for its parameters, primarily due to its pressure and immersion depth.

Water Quality Compliance

The polluted bottom of well sources may consist of various fractions: sand, clay or pebbles. The type of pumping device must be suitable for the structure of pollution, otherwise its operation in an unsuitable environment will be inefficient and lead to failure.

low cost

It is irrational to spend a lot of money in everyday life to buy an expensive pumping electric pump - when working in a polluted environment, the mechanism of any device wears out faster, and replacing parts in expensive equipment, in addition to its high cost, will lead to even greater costs.

This statement does not apply to organizations involved in the pumping of wells on professional level. For example, expensive high-quality Gundfos submersible electric pumps, due to their high reliability after many years of operation, are more profitable to pump wells than domestic models.

High performance

This parameter affects the pumping time of contaminated water, which in some cases can take more than a day, and the cleaning efficiency. More powerful models suck up liquid from greater depths, respectively, taking away more contaminants than low-power devices.

The main types of electric pumps for cleaning wells

Due to their design features, several types of electric pumps most commonly used in everyday life can work effectively with contaminated water.

Vibrating

Using vibrating views for pumping dirty water has the following advantages and disadvantages:

low cost. All vibration models belong to products of the budget price category, the minimum cost of the Aquarius pump is about 20 USD.

Simplicity of design. Allows you to repair or replace worn parts without much effort and special equipment.

Working with dirty water. Vibrating electric pumps are best suited for pumping mud, sand and small pebbles quickly erase their rubber parts.

Principle of operation. The use of vibration pumps adversely affects the casing pipes, causing their deformation, and can also lead to complete silting of the well source due to the compaction of the sedimentary layer during vibration.

Low performance and uptime. These are the main disadvantages of vibration pumps, excluding their use for permanent water supply.

Screw (screw) submersible electric pumps

Screw electric pumps have the following distinctive features:

High price. The cheapest Unipump ECO VINT1 models are 4 times more expensive than vibration models - about 80 USD.

Working with contaminated liquids. The devices work well with very viscous clay soils, sand and small stones wear out the screw.

Simplicity of design. Single-screw household screw pumps have a simple device that allows you to independently clean, repair and replace parts without special skills.

Centrifugal pumps

Centrifugal types are the most common; both surface and submersible types are used to take pumped water from wells, which have the following features:

High price. Centrifugal electric pumps are quite expensive, the price of the cheapest Whirlwind models is 70 USD.

Working environment type. Special submersible centrifugal electric pumps are designed to work with fine solids - this allows them to pump water with sand.

Performance. Centrifugal electric pumps have a high efficiency and pumping volume, they can lift water to the highest height of all types presented.

For efficient pumping of wells, centrifugal electric pumps are most often used, designed to work with large particle sizes. Vibration types are best used as auxiliary equipment for supplying water under pressure to the bottom of the well, causing the mud to rise and mix it.

oburenie.ru

How does a sand well work?

Sand wells are the most common sources, as they are located on the first layer. This design requires careful selection of the pump. The resulting water will initially be heavily polluted with sand, so not every unit will be able to pump it efficiently. This will create an additional load on the pump, so the sand source requires the use of special powerful equipment.

The aquifer is represented by sand deposits. The porosity of the material is large, and therefore the mobility of each grain of sand is also high. Sandy water flow creates an additional load on the pump. The device cannot pump dirty water for a long time, so it burns out quickly. It is beyond repair. What to do in such a situation? The reasons for the rapid failure of equipment is a poor-quality pump.

Specialists in the field of water supply have developed a methodology additional protection water and equipment from sand. When arranging a hydraulic structure, a natural filter made of fine crushed stone or pebbles is used. it good way inhibition of any washing or movement of sand in the entire well. For greater efficiency, a mesh look filter.

Machine description

The sand pump is a single-stage and centrifugal equipment. The main task of this design is the pumping of abrasive slurries, waters with various impurities. But for effective pumping, a liquid must have certain properties.

The pumped solution must have:

• certain temperature (+5…60°С);
• density up to 1300 kg/m³;
• content of solid inclusions (up to 25%);
• maximum microhardness up to 9,000 MPa.