Centrifugal pump: varieties, features of construction and use

A centrifugal pump is a device that is used in sewerage and water supply systems. In general, such devices are used in the communal economy. Due to the peculiarities of their design, they can pump a large amount of fluid of different viscosities.

The presented device can be of several types, and the design of the device of each particular kind is slightly different. However, the only principle for all is the principle of the pump. Fluids are injected and sucked by centrifugal force, which results from the rotation of the wheel with blades in the body of the device. The water leaves the apparatus much faster than it enters.

The centrifugal pump can be either single-stage or cantilever. As for its location in space, it can be installed both vertically and horizontally. Use the devices can be at low, medium or high pressure. Fluid from the pump is output from one side or both. As to the way of water drainage from the apparatus, it can be a scapular or spiral. Depending on where the device will be used, it is normal, fast and slow.

The centrifugal pump can be used in sewers, fire systems, and also pump alkali, oil or chemicals. You can install the device on the surface or immerse it to a certain depth.

Obligatory for the presented unit is a flowing part, which consists of a branch, an occasion and an impeller. The last element is usually fixed at the end of the rotational shaft. The wheel transfers the fluid energy from the engine. This consists of the slave and the master disk. Between them are the blades, which have a definite one-sided bend.

A centrifugal pump provides movement of water from the impeller to the discharge nozzle. If the device has a multi-stage structure, then the liquid is transferred from one pair of disks to the next one. The operation and design of the single-stage instrument are very simple.

When choosing centrifugal pumps for water, it is necessary to pay attention to the speed of rotation of the wheel, as well as the gap between the discs and the body of the device. These parameters determine the pressure under which water will flow from the pump.

It should be noted that single-stage devices have a low level of maximum pressure. The largest number of impellers in a multistage device is 5 pieces. Naturally, the water centrifugal pump must be properly operated to have the maximum performance. Also it is necessary to take into account the head of the network, in which the device will operate.

If you need a powerful pump that will work in a fairly large network, you need to pay attention to those devices that have a high speed rotor impeller.

The most common are the cantilever centrifugal pumps. They have the simplest possible device and they manage their task remarkably well.