🚿 Deep Well Pump: how to choose the diameter, the pressure and performance

Internals downhole pump and its working principle

a submersible pump design type can vary depending on its operation principle. For example, binding components of the vibrating device is a pump mechanism and a built-in motor. Last is the bottom of the unit and is protected against water. Also in a vibrator device is provided, by which the pressure created to inflate by opening and closing the water conduit.

Sam vibrator includes anchor regulating washers and rubber shock absorber. Such a mechanism enables more stable operation of the equipment without failures and disturbances sealing walls.

As for the depth of centrifugal machines, their design has some differences. Huge role scapular engine type. In such pumps provides its own cooling system. Due to the fact that the liquid passes through the internal mechanisms, bearings, running during startup, do not have time to cool. Therefore, such a device is considered to be the most durable. Such pumps has special safety devices. All the details of the mechanism are packed in robust metal housing.

The principle of operation of submersible pumps also has some differences. The vibration pump the whole process the water injection takes place through a special movable piston. When running inside the device is formed by an electromagnetic field which causes the vibrator to move, driving the piston.

Centrifugal pump shall work with a special wheel which creates a centrifugal force that performs the ejection of water in the flow channel from the water intake pipe. A similar principle of operation of screw pump in the well.

Distinctive properties of submersible pumps depending on the type of

Submersible pump is a device which may be partially or fully lowered into the water. Such designs and other different characteristics. We offer the possibility to study each type of pump.

Radial construction

There are pumps with a working shaft normal suction and self-priming. First Embodiment aggregates starts to operate when the inlet is completely filled with water. For the second type of pump is characterized by the presence of air in the tube in order to start the operation.

Vortex pump stations

The purpose of the use of vortex pumps - pumping of water from the well. However, such arrangements are suitable for conveying the gaseous substances. This type of equipment can be operated at low water level in the well. In all of this, this situation will not affect the quality of the head.

Screw Assemblies, as an alternative to surface

Submersible screw pumps lowered into the water for the duration of use. The main component of this type of pump mechanism is "Archimedes' screw". Water is pumped into the pipeline system by means of an impeller with wide blades. However, such models are too sensitive to small particles from entering the land of rocks: rocks, sand and limestone.

Vibrating machines for wells

The vibration-type constructions provide for a special mechanism which lacks any kind of moving parts. This suggests that these pumps can last for much longer than analogs having rotating engine parts. Most of these units are used as a protector for independent cooling systems.

Leading manufacturers of submersible pumps

Equally commendable both domestic and imported submersible pumping device. Consider the popular foreign designs.

1. Grundfos. Known brand specializing in the production of pumping technology in Denmark. Concern manufactures submersible and surface models. The main feature is the use of products in the production of stainless steel.
2. Marina. Pumps of this brand have centrifugal inner structure with a single impeller. Such devices are used for filling bulk tank water from wells and deep wells.
3. Speroni. These units are considered to be quite expensive. They are designed to pump only perfectly clean water, which is suitable for drinking. This is due to the fact that the strainer is installed inside, which is able to protect the internal mechanism from sawmills only large fraction (up to 3 mm).
4. Amarex. Units with normal suction and one worker monoblock. Such units may be single or multi-channel. Apparatus claimed trademark equipped with explosion protection, are asynchronous three-phase motor.

Typically, the products of foreign manufacturers has high performance usability. Of course, the equipment with multiple degrees of protection will cost several times more expensive than the classic modification devices.

Among the Russian brands that produce deep well pumps, stands out:

• "Irtysh" (A density liquids should be less than 1100 kg / m³);
• "Kid" (Structure very different quality depending on the cities in which the producer has branches. Positive references are only those products that are produced in the shower);
• "JEELEX" - models that resemble Chinese pump units. I found a few options. They differ in thickness and method of operation.

However, each of the proposed brand offers its customers a wide range. Among these manufacturers, you can select a suitable unit for individual application needs.

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The best models of submersible pumps, according to the wording Tehno.guru

As previously revealed by deep pump manages to pump water from the deepest sources without loss of pressure. However, not all users are well versed in this type of technology. Our editorial staff is ready to provide information on existing best possible models with excellent quality performance and beyond.

Pump Grundfos SQ 2-85

Submersible pump, which develops more power and capable of generating the maximum pressure force. Such a unit may be installed horizontally and vertically. The pump design is intended for transporting liquids exclusively in pure form without the presence of impurities and metals.

Pump JEELEX Poplar 3D 70/60

The pump is designed for pumping drinking water. Used for artesian springs. Such units are not recommended for use in wells-vadose intended for watering the garden.

Pump PATRIOT SP 3250S

This pump may be used only for vertical installation. Stated analogue is also intended for use only in a perfectly clean wells.

Pump BELAMOS TF3-40

Model with good performance and low noise. The device copes with transportation perfectly clean water. The unit is installed in the upright position, has a built-in protection against overheating.

Pump CALIBER NPTSS 1.2 / 50

Standard immersion device, which body is made of stainless steel. The unit is designed for shallow wells, because it has relatively weak performance and, accordingly, the minimum immersion depth.

Features of the unit of choice for the well

Having dealt with the existing models, the general requirements that must be met underwater structure should be considered. In the first place, the unit must not have external defects and comply with their performance. Worth noting the following important points:

1. The integrity of the body - this is an important feature that should always be observed. If it has any chips, scratches or cracks, this unit is obviously defective or has operated. Such defects are not allowed. They quickly withdraw the unit from damage. In addition, there is a risk of short circuit.
2. Eyeing yet to the models that have several degrees of protection. Binding factor is the presence of dry running protection. This characteristic of the vadose-wells, however, the gap between the water surface and let in artesian springs.
3. The equipment must be clean. Discard the units in which rust has already appeared. This indicates that the unit is kept in damp conditions.
4. Take care to make, model and specifications of the unit correspond to those shown on the packaging. Typically, such data is duplicated on labels of the pump housing.

These are the basic requirements that will not make a mistake in the choice of equipment.

What is important to know when choosing a subsurface pump: key points

Selection subsea pumping equipment is strictly dependent on what are the characteristics of the well. If it drilled professionals, the owner remains in the hands of the necessary technical source of passport, which has all the necessary data. On them and should be guided when buying a downhole pump.

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quality performance

Power output (performance) should be calculated based on the number of family members and norms at an additional cost. For example, if the house lives one person, then it lacks the resource of 200 liters per day, respectively unit capacity should not be less than 1.9 m³, for example, for watering the garden these characteristics over enough. As a reference should be added per-minute flow of water in the water intake points at home:

• Bathroom, shower - 10 l / min;
• Restroom - 6 l / min;
• Sink - 6 l / min.

For an average family of three to four people for domestic water use efficiency of the pump must be in the range of 2-3 m³ / h.

The height of the head

Typically, water from the well to the point of water intake must be transported smoothly and air pockets. It is therefore important to take care of the post of head of the unit. To calculate this parameter, use the following formula: H = Hgeo + (0,2 · L) + 10 [m], where

• H - for a given source pressure intake and measure the vibratory pump;
• Ngeo - height immersion nozzle from the pump space to the highest point of intake;
• 0.2 - drag coefficient of casing length;
• L - length of the pipeline (horizontal) leading to the intake point;
• 10 - a figure that should be added as a reserve.

Please note that the quality of the supply pressure affects the inner surface of the pipe, that is, if they are rough, then the pressure will be lower than supply.

What should be the diameter of casing

Optimal pump diameter should be at least 76 mm, in this calculation, it is lowered into the casing with a diameter of 90 mm. However, for private houses optimal variant wellbore must be at least 110 mm, respectively, similar indicators of deep pumping equipment will not exceed 100 mm for centrifugal and no more than 90 mm vibration.

Remember that a well with a small diameter rapidly silting, so it is advisable to carry out its regular maintenance.

Dear readers, if you have any questions relating to the publication, write in the comments under the article. Our team is willing to help sort out all kinds of nuances.