Types of well pumps

The main function of pumping units for a well is the ability to raise water from the depths. The deeper the water is, the cleaner it is. The pump ensures the supply of water for municipal needs in the required volume and quality.

What are well pumps

Superficial Surface pumps are installed next to the well, avoiding immersion in water. At the same time, they must be protected from water and low temperatures. Their use makes sense if the height of the well does not exceed 10 m.

Centrifugal. The centrifugal pump works under high pressure and has high performance. Suitable for long-term work at depth (up to 100 m). It is used in artesian wells.

Vibrating. The vibration pump design is based on a rubber membrane. Abrasive particles constantly get inside and clog the mechanism. It is suitable for temporary work on the site, with long-term use it destroys the wall of the well. It has a small productivity. Such a device is suitable for primary pumping of the well and short-term irrigation of the site.

Helical. The screw design uses a worm screw. The rotation that is created causes the water to rise up and enter the hose. Suitable for household autonomous water supply systems and narrow wells.

Whirling. The working element of such a pump is an impeller wheel. In terms of pressure power, such models are 3-7 times superior to centrifugal devices - the water inside them moves in a spiral. They can be installed at a depth of 10 m. But they are demanding on water quality. Such pumps are recommended to be installed in artesian wells, from which water with a minimum of impurities is extracted.

Basic parameters of well pumps

Well pumps have three main parameters: diameter, performance and lift height.

When choosing the diameter, it is necessary to focus on the dimensions of the well and the casing pipe, which helps the well not to collapse. To protect the pump from overheating, it is necessary to ensure a free entry into the pipe. If it sticks to the walls, it can quickly become defective. The difference in diameter should be at least 10 mm.

The pump head determines the maximum height of the water column that the pump can deliver water. It is usually measured in meters or atmospheres (1 atm = 10 m). Head = (distance from the installation point of the pump in the well to the surface of the earth + horizontal distance from the well to the nearest point of water distribution/10 + height of the highest point of water distribution in the house + pressure in the storage tank) × coefficient of water resistance. * - When calculating, take into account that 1 vertical meter is equal to 10 horizontal meters, for this we divide by 10.

The productivity of the pumping equipment depends on the number of water distribution points. This is the volume of water that the pump can pump per unit of time. This parameter should not exceed the flow rate of the well. You can see it in the data sheet, or you can calculate it yourself.

What is the flow rate of the well

The flow rate of a water intake well is the volume of water that fills the well per unit of time. To find out, it is necessary to determine the static and dynamic water level.

A static level measures the height of water at rest. Two hours after drilling, it is necessary to calculate the distance from the mirror surface to the bottom of the well.

The dynamic level defines the limit to which the water drops during continuous pumping. To avoid "dry" operation of the pump, it is necessary to place it two meters below this mark.

There is such a formula for calculating the debit:

D=V*Hв/(Hdyn – Hstat), where:

V – pump performance; Nv is the height of the water column; Ndyn - dynamic level; Nstat - static level.

Water consumption should be 5-10% lower than the flow rate of the pumping equipment. Otherwise, the water level will be below the suction part of the device.

For example, we have a well 60 meters deep; the statics of which is 40 meters; the dynamic level during the operation of the pump with a capacity of 3 cubic meters per hour was set at the mark of 47 meters.

In total, the flow rate will be: Dt = (3/(47-40))*20= 8.57 cubic meters/hour.

When choosing a pump, you should consider the purposes for which it is needed. It is also necessary to know the parameters of the well in order to calculate the height, performance and diameter of the pump.

Ledermann energy-efficient pump units

LEDERMANN Industrie Werke (LIW) is a brand that offers ready-made solutions for the completeness of the required pump unit.

The peculiarity of the company's solutions is that, with German quality, the price is lower than that of competitors.

Advantages of LEDERMANN pump units:

• Energy efficiency. >20% electricity savings compared to GOST pumps;
• Reliability and excellent performance. The maximum productivity is up to 500 m3/h; maximum pressure - up to 700 m;
• High production standards. Modern technologies and materials used in the manufacture of aggregates.
• Full production cycle. Quality control at all stages. A modern laboratory for testing each unit before it leaves the factory.
• Durability and convenient maintenance;
• Electric motors with the possibility of increasing power (rewinding) up to 220 kW.

Why should you choose Ledermann well pumps?

• German quality at an affordable price.
• The payback period is 1 year due to lower electricity consumption.
• The pumps meet European and Ukrainian quality standards.
• The exclusive representative of Ledermann in Ukraine is the Ekvives company.

For our part, we will provide:

• Quality service;
• Professional consultation and flexibility of working with clients;
• We will provide certificates of conformity;
• Convenient delivery: we will deliver to your warehouse or organize a quick pick-up.