Pump semisubmersible: an overview, prices, reviews

Semi-submersible pumps were widely used not only in everyday life, but also in industrial areas. Especially it concerns vertical models. Their main advantage is the vertical arrangement of the shaft, so that such equipment can be placed in narrow and small boreholes. A semi-submersible vertical pump can be used not only as a separate unit. It can be one of the elements of the water supply system.

General information

Pumps semi-submersible serve for pumping clean or dirty water in water supply and sewerage networks. They are quite small in size, easy to operate, and also have a low noise threshold. Due to such advantages, the semi-submersible pump is used in many areas, such as heating, water supply, drainage, irrigation and much more. With the help of such an aggregate, the liquid is raised by increasing the pressure. The device also includes an electric motor.

Chemical pump semisubmersible

Under this kind of represent a variety of centrifugal devices that serve for pumping liquids, which differ in chemical composition from ordinary water. They have a second name. These are the elements for chemical production. The material from which the semisubmersible centrifugal pump is made must be resistant to some of them. In addition, it must be ready for various states of the pumped liquid, that is, to withstand temperature, density and possible presence of solids. The semi-submersible pump is not made from conventional cast iron, as this material is unstable to different chemical media. When interacting with them, iron ions are released, which is unacceptable. Therefore, choose a quality metal that is able to withstand not only chemical elements, but also withstand work at high pressure.

Properties of semisubmersible devices

Popupogruzhnye pumps are used for cleaning domestic sewage. They fall into the necessary liquid exactly half. That is, the pumping part is immersed in contaminated water, and the electric motor is attached to the surface by means of a float. Thanks to such equipment, it became possible to extract liquid silt, fecal matter, and also mazut and peat from the bottom of the gutters. The electric motor and submersible pump serve as a drive. The case is made of high-quality steel, which protects the engine from mechanical influences and moisture. In addition, such pumping equipment can be supplemented with special shredders. But for this, it is necessary to additionally install a more powerful engine with a high throughput of solid particles. There should also be a fairly high-quality cooling system, since grinding various substances can lead to overheating. Fecal semisubmersible pumps are economical and easy to use. Thanks to their quiet operation, they are increasingly used for pumping sewage water.

terms of Use

To centrifugal semisubmersible devices do not break, it is necessary to ensure the correct working conditions, as well as to install monitoring instruments. The main cause of failure is the ingress of solids into the impeller. To avoid this, you need to install a special coarse filter.

It is also necessary to protect the equipment from a process such as cavitation, in which water hammers occur. They adversely affect the internal mechanisms, as well as the pipeline itself. Therefore, pressure gauges are installed on the check valve to measure the pressure at the pump inlet. When there are high indicators, you should switch to a gentle mode.

What to look for when choosing?

When choosing centrifugal devices, you need to pay attention to such characteristics as power consumption, performance, weight and overall dimensions. Also it is necessary to take into account the material from which all the working elements are made.

Terms of Service

The life of a semi-submerged pump depends on how it will be used. Apparatus should be installed strictly vertically. Excludes installation in a horizontal position or the slightest bias. Do not pumping a fluid that is not listed in the operating instructions. Such pumps may not withstand some aggressive chemical compounds. If solids are contained in the pumped liquid, shredders and an additional cooling system must be installed.

It happens that the semisubmersible pump must be used in the cold season. Under such conditions it is necessary to insulate it or install it in a heated room. If this is not done, the case may be damaged. It is important to follow all the rules of operation, then your device will last a long time.

Positive and negative sides

This type of pumping equipment has a powerful drive, which provides high rates of productivity and pressure. To increase productivity, it is sufficient to strengthen the shaft located between the motor and the pump. Due to the fact that the device is divided into two parts, repair and maintenance is not difficult.

Semi-submersible pump is equipped with a special float, so you can quickly arrange pumping water from any gutter. All you need to do is find out the length of the pit and provide an optimal pipeline layout.

Among the shortcomings is the lack of an internal chopper. When pumping liquid with the presence of solids, it is necessary to additionally purchase and install a grinding device. Another negative side is the lack of engine protection from atmospheric precipitation and aggressive chemical fluid. Compared to submersible pumps, semi-submersible pumps create more noise.

Installation

The installation process can differ only from the type and purpose of the pump. There is a mobile view, the installation of which is to immerse in the liquid and secure the motor with a float. It is necessary to ensure a good supply of power cable. To remove dirty water, use flexible hoses of different lengths.

If the pump has a fixed structure, then all its elements should be attached to the tank enclosure. To fix the engine, erect a special platform.

Cost

The price of semisubmersible pumps varies from 35,000 to 100,000 rubles. Everything depends on the design and technical characteristics of the device.

Reviews

Many users are satisfied with the operation of semisubmersible pumps. The advantages are high performance and ease of installation and operation. A huge drawback is noise, which can not be got rid of, and lack of built-in chopper.

Conclusion

Semi-submersible centrifugal pumps play an important role in pumping a liquid that is chemically different from ordinary water. They fully justify the money spent on them.