Equipping a well with a pump: selection and installation. Submersible pumps for a well: which one is better to choose, types and features of well pumps Sanding in vibration and centrifugal pumps

Submersible pump for well WSN 1000D 1000W, 40m max, 5.5m3/h max, 35.0 m max art. J1000WSND Waterstry

Art. J1000WSND

Multistage submersible centrifugal pumps of the WSN-D series are designed for pumping clean rainwater, drainage and groundwater, which does not contain abrasive substances and long-fiber inclusions from wells, storage tanks, tanks, etc.
The pump is equipped with a modern multi-stage hydraulic system with closed impellers (4 pcs.) and passes small impurities up to 1.0 mm in size.

Purpose:
For pumping clean or slightly contaminated, chemically non-aggressive water from wells, shallow wells with an internal diameter of at least 50 cm, as well as surface water supply sources.

Areas of application:
When the pump is equipped with a pressure regulator (relay, press control) and pressure membrane tank it turns out optimal solution for supplying water to the pressure water supply system in the domestic sector.
Recommended for irrigation systems in agriculture and horticulture.
WSN-D is ideal for wells, rainwater storage tanks, storage tanks, swimming pools, clean ponds etc.

If necessary, the pump can be used to completely drain new flooded areas.

Advantages:
low weight and dimensions due to the use of composite materials and sheet metal of stainless steel;
sufficiently high pump pressure;
built-in thermal protection of the electric motor;
Installation in both vertical and horizontal positions is allowed.

The upper location of the pressure pipe allows the electric pump to be operated even with partial immersion, because Cooling of the electric motor is ensured by the flow of pumped liquid washing the motor inside the casing.
The pump is equipped with a float switch which ensures reliable protection from dry running, and also allows automatic restart after the water level in the source is restored.

Well pump IDROGO M40/08 N07RN-F G 1 1/4 0.6 kW ~3x400V 50Hz with rubber cable 20 m art. 1582030004 Ebara

Art. 1582030004

5" Submersible monoblock well pumps Idrogo (Ebara, Italy) made of AISI 304 stainless steel are used in water supply and irrigation systems. Pumps of these series are ideal pumps for wells, as they provide lifting water from depths that are not accessible to centrifugal pumps ejector pumps. Due to the cooling of the engine by the water pumped by the pump, they have better cooling compared to borehole pumps, which minimizes the possibility of overheating during prolonged periods. continuous operation. Unlike well pumps, less sensitive to solid particles contained in water.
Application:
Innings clean water from wells, cisterns and reservoirs.
Household systems water supply
Garden irrigation.
Carwash.
General purpose pressure boosting.
Technical data:
Equipped with a double mechanical seal with an intermediate oil chamber.
Comes with power cable 20 m long, type H07RN-F (5 m for IDROGO 40/06 M).
Single-phase version with optional float (version "A").
There is a three-phase version 230 V ±10% 50 Hz.
Installation: horizontal or vertical position.

Pump technical data:
Maximum operating pressure: 10 bar.
Max. liquid temperature: 40°C.
with 20 meter cable max. immersion depth (version "A") 10 m.
with 20 meter cable max. immersion depth 17 m.
with 5 meter cable max. immersion depth 2 m.
Maximum passage of solid particles 2.5 mm.
Output connection G1¼.

Engine technical data:
Asynchronous self-ventilated 2-pole motor, cooled by the pumped liquid.
Insulation class F.
Electrical safety class IP68.
Single phase voltage 230V ±10% 50Hz, three phase voltage 230V ±10% 50Hz, three phase voltage 400V ±10% 50Hz
Always-on capacitor and built-in thermal protection with automatic restart for single-phase motors.
For the three-phase version, thermal protection must be provided by the consumer.

Materials:
Outer casing, motor cover, mechanical seal bottom, filter and retaining ring made of AISI 304 stainless steel.
Working wheel, diffuser and spacer made of PPE+PS, reinforced with glass fiber.
Shaft made of AISI 431 stainless steel.
Upper mechanical seal (motor side) made of Graphite/Ceramic/NBR and lower (pump side) made of SiC/Graphite/NBR.

Submersible well pump SB 3-45 M (without float) art. 97686704 Grundfos

Art. 97686704

Features and Benefits

Submersible well pump SB 3-35 M (without float) art. 97686700 Grundfos

Art. 97686700

Grundfos SB is a submersible well pump for water supply systems. Used for efficient pumping of clean water from wells and rain storage tanks. The well pump is available in two main versions:
with built-in mesh filter (perforation 1 mm);
with side entry, which includes a flexible suction hose and a floating strainer (1mm perforation).

In both versions, the Grundfos SB pump can be supplied with or without a float switch. The float switch can be used for automatic operation or dry-running protection.
Pump options (model)
Built-in strainer with float switch A
Integrated strainer without float switch M
Float filter with float switch AV

Features and Benefits
Quiet operation. When submerged, the SB pump operates silently and is therefore an advantageous alternative to non-submersible pumps.
High reliability. The SB well pump is made of composite materials and stainless steel, resistant to corrosion. In addition, the pump is equipped with a stainless steel filter that prevents large particles from entering.
Built-in protection. The pump is equipped with thermal overload protection.
Float strainer. The float strainer model sucks water just below the surface where the water is clear and free of solids.

The SB series pump is a submersible auxiliary pump for pumping clean water, particularly suitable for pumping rainwater. The pump is available in two main versions:
with a mesh filter on the pump suction line (mesh with a hole diameter of 1 mm);
with a side suction line which includes a suction tube with a floating strainer (mesh with 1mm hole diameter).
If the distance from the wall of the tank (well) to the pump is more than 1.5 meters, it is recommended to use a model with a side entrance.

If the distance from the wall of the tank (well) to the pump is less than 1.5 meters, a model with a mesh filter is recommended.

Installation features:
Maximum diving depth:
SBA 3-35 – 10m;
SBA 3-45 – 10m.
Maximum height difference from pump to hydraulic tank:
SBA 3-35 – 13m;
SBA 3-45 – 20m.
Minimum free length of the float cable from the float to the fixing point: 10-18 cm.

Submersible well pump SB 3-35 AW (with float, suction hose, filter) art. 97686703 Grundfos

Art. 97686703

If the distance from the wall of the tank (well) to the pump is less than 1.5 meters, a model with a mesh filter is recommended.

A surface pump is located next to the well or in the house, and a submersible pump is lowered into the well. In well models, the suction hole is located at the bottom, so the pump works even if it is not completely submerged in water. A float switch that is activated when the water level drops prevents dry running. It is recommended to maintain a distance of one meter from the pump to the bottom of the well, no less. This prevents the pump from sucking up silt and sand from the bottom.

Pumps differ in their mode of operation:

Centrifugal - with an impeller screw; when rotating, the screw creates an area low blood pressure, and water is absorbed.
Vibrating - water is pumped by a piston, which is a moving part of an electromagnet.

Pump models differ in pressure, functionality, and performance.

Pumps for ten-meter wells: make the right choice

The height of water lifting for centrifugal and vibration pumps is up to 60-70 meters. The vibration-type range includes pumps with a capacity of up to 1000 liters per hour, while centrifugal pumps can operate ten times more efficiently.

The advantages of a vibration pump are its simple design and energy efficiency. With the same power, the productivity of the vibration model is higher than that of the centrifugal model.

Disadvantage: vibration causes the ground to move. The sandy bottom rises when such a pump operates for a long time. Buildings may suffer from ground vibrations.

Pumps for ten-meter wells: price depends on design

Vibration pumps are cheaper than centrifugal pumps, with equal power. For occasional use, not too long, buyers choose a vibration pump. If you need to pump water constantly, then use a centrifugal one, although it is more expensive.

Characteristics of pumps for ten-meter wells

Water must be raised to the surface and delivered to the place of consumption. Therefore, pumps for ten-meter wells are chosen with a reserve in the height of water rise.

Models of vibration pumps designed to lift water to a height of more than 10 meters are few in number. Buyers prefer centrifugal well pumps to supply water from a ten-meter well.
type.

The power of vibration pumps is 250-300 W, and centrifugal pumps

develop a power of 0.5-2 kW.
The productivity of a 300 W vibration pump will be 16 l/min, and the productivity of a 1.1 kW centrifugal pump will be 150 l/min.

When installing a well pump, you need to consider max and min water level in the well(dynamic level), total depth of the well, flow rate (replenishment) of the well.
Don't chase high throughput pump. The high performance of the pumping unit must be commensurate with the flow rate of the well (the amount of moisture entering it per unit time), otherwise there will simply be nothing for the powerful device to pump.
The average water flow through one tap is 4 l/min. The required flow rate is calculated as the total water consumption of all plumbing fixtures in the system, as if they were operating simultaneously - taps, washing machine and dishwasher, cistern etc., - multiplied by 1.75 (reserve). Pump capacity must be equal to or greater than the obtained value.
Water supply height, indicated in the product passport, is the maximum possible. It requires recalculation taking into account the length water supply network, number of pipeline bends and number of floors of the building.
Almost all manufacturers recommend installation of prefilters from getting silt and sand into the pump.
Float switch, included in the pump design, will protect the device from running “dry” when the water level drops below the operating level.
It is recommended to connect all pumps to the electrical network through a differentiated RCD automatic machine(device protective shutdown), which, in the event of depressurization of the housing or electrical cable, as well as other malfunctions, will emergency disconnect the pump from the network.
To automate the water supply of a dacha, garden house, country cottage convenient to use pumping stations and, equipped with a well pump, a pressure switch and a hydraulic storage tank.
TO drainage wells or tanks where silt and sand can be sucked in from the bottom, it is better to purchase drainage pump.

And further. If to summer cottage there is no electricity supply, it is worth considering purchasing hand pump for a well or motor pump. Happy shopping!

Quite often the well personal plot is the main or auxiliary source of water. The depth of such a structure does not exceed 10 meters, but is within 1.5-2 meters (to extract water from a greater depth, it is more economical to drill a well). Raising water the old fashioned way, using a bucket, using a chain wound on a drum or a crane, it is impossible to satisfy the needs of the people living in the house. Well pumps various types solve the problem of supplying water in sufficient quantity for consumption, technical needs and irrigation.

Water does not enter the water supply system on its own, for this you need a device that is responsible for transportation - a pump

Variety of products offered on the market pumping equipment allows you to select a model that meets specific operating conditions and consumer needs. A properly selected well pump will ensure an uninterrupted water supply for many years.

The well depends on many factors. First of all, they take into account the following characteristics water source:

When choosing water pumps for wells and boreholes, take into account the depth of the aquifer. The power must be sufficient to lift water to the required height and deliver it to the building (taking into account the number of floors of the building). Transportation of water over a distance of 10 m through a water pipeline in a horizontal plane is assumed in calculations to be equal to 1 m of pressure. The depth of wells rarely exceeds 10 m, however, it is recommended to select equipment whose power is 15-20% greater than the minimum required. In this case, the pump operates in a gentle mode, does not overheat, wear is reduced and the service life of the product increases.
The distance from the surface to the water surface under conditions of no flow for several days (static level) and the same distance under conditions of constant water intake (dynamic, minimum level at which the flow is compensated by the inflow). Based on the difference between the static and dynamic levels, the performance of the unit is calculated.
The percentage of sand, soil and other particles in the water. To determine this indicator, it is recommended to carry out a laboratory analysis of water and select equipment taking into account the data obtained. To prevent the suction of silt and sand, the pump is installed in the well at a distance of at least 30 cm from the bottom.
Seasonality of operation. , intended for operation exclusively in the summer, has simple design and will cost less than “all-season” models.

The most important characteristic influencing the choice of a pump for a well is its performance, i.e. supplying the required amount of water to water collection points. When calculating consumption during peak periods, the number of faucets, bathrooms, special rooms and extensions (baths, saunas, laundry rooms), watering points, etc. is taken into account. Water consumption for private houses is at least 2.5 m³ per hour and rarely exceeds 8 m³. If equipment is turned on/off frequently, it is recommended to install a hydraulic accumulator.

Types of pumps

Having determined the optimal characteristics for specific operating conditions, we begin to select a pump.

The surface pump is suitable for shallow wells and modest budgets; it is quite easy to install and simple to maintain.

Depending on the location, there are two groups of units, each of which has advantages and disadvantages:

. This type is installed on a surface in close proximity to the source or in a specially equipped room. The advantages include affordable price, ease of installation (installation possible on our own), electrical connections and repairs, small size, reliability and long service life. Such equipment copes with its tasks even if the water layer is less than 80 cm. At the same time, this type of equipment is sensitive to the presence of impurities in the supplied liquid, is not suitable for wells more than 8-9 m deep, and the noise produced during operation requires the allocation of a separate room for installation.
Semi-submersible or . Such units supply liquid to a great height, while the body is partially or completely submerged in water. The supply is carried out due to the pressure of the liquid coming from below. Taking into account the operating conditions, the submersible well pump is manufactured in a sealed housing made of stainless steel or plastic, and electrical cable reliably isolated. A submersible well pump has a number of advantages compared to a surface pump: to start working, it is not necessary to fill the water supply system with water, cooling is carried out by the pumped and surrounding liquid, and the installation of filters prevents sand and other impurities from entering the water.

When installing, it should be taken into account that the well is located at a distance of at least 1 m from the bottom. Otherwise, under the influence of traction, silt and sand from the well bottom will flow into the water supply system. Top part the pump must also be constantly below the dynamic water level, otherwise it will trigger automatic protection The unit will periodically shut down due to overheating.

Types of submersible and surface pumps

When choosing equipment, you should focus primarily on the quality of the product. Attempts to save money and purchase a pump for a well of dubious quality at a low price end in the rapid failure of the equipment. In addition, depressurization of the submersible pump housing leads to contamination of the well with oil, and in this case, cleaning work will be expensive.

To decide which pump to choose for a well, it is worth considering separately the types of surface and submersible units.

A submersible pump is suitable for deep wells; its cost is relatively high, but its service life is long.

Surface ones are used both as the main equipment for supplying water, and additionally, increasing the pressure in the water supply system and reducing the load on the submersible pump for the well. All models of units of this type consist of three main elements:

power part, the main component of which is the electric motor;
a discharge part that regulates the pressure level in the working chamber;
control unit.

Depending on the principle of operation, there are three types surface pumps:

used for lifting water from wells no more than 9 m deep. Structurally, such units are divided into single-stage and multi-stage. Single-stage due to the impeller located opposite the working shaft and are capable of pumping large volumes of liquid at a relatively low pressure. Multi-stage models offer equal performance and create more pressure on the way out thanks simultaneous work several impellers.
Vortex tubes are not intended for drawing water from great depths and are often used as additional equipment to maintain the required pressure level in the system. They are characterized by high productivity and the ability to maintain pressure 3-5 times higher compared to centrifugal ones.
WITH . The operating principle of this self-priming pump similar to a vortex, but it is capable of lifting water from a much greater depth (up to 30-40 m). The disadvantages of this variety include low performance and noise produced during operation.

Unlike a well with automation, there are no restrictions regarding the dimensions and diameter of the body. Automatic well pumps are equipped with a built-in float switch that protects the unit from overheating if the water drops below permissible level. In addition to the dry running sensor, the automation unit includes a pressure switch, pressure gauge and other elements that ensure safe and effective work equipment. The following types of units are used to supply water from a well:

Vibration pumps. Due to the absence of rotating parts, such equipment is reliable and wear-resistant. The suction and supply of water is carried out due to the difference in pressure resulting from the vibrations of the rubber diaphragm. Vibrating pumps for wells are sensitive to voltage changes in the network. As a result of a decrease in voltage, performance drops noticeably, and with an increase, damage to the diaphragm is possible. At the same time, this problem is easily solved with the help of a voltage stabilizer.
for a well does not create vibration during operation, is silent and has high performance. Water supply is carried out due to the rotation of the impeller, while the water flow moves from the center to the edge and is forced out in the direction of the pipe.
The well drainage pump does not create the pressure necessary for the normal functioning of the water supply system and does not provide the proper level of water purification. Such a unit is used primarily for cleaning structures or supplying water for site irrigation and other technical needs.

Thus, the main criterion when choosing is the water level in the well and its depth. For a deep source with sufficient water level, it is better to choose deep well pump for a well with automation, if the water level is not high and the depth does not exceed 8-10 m, optimal choice will become one of the models of surface pumps.

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If the depth, water level and other conditions allow you to choose any of the described types, an additional argument in favor of the submersible will be its efficiency.