How Water Pumps Work

Water pumps, like any other machine, are designed to reduce effort and save time. Recently, the manual water pumps that were operated by pumping a lever up and down have been replaced by pressurized and centrifugal water pumps. If you need to understand how water pumps work, start off by taking a look at the two main water pumps. After doing this, go ahead and consider the elements that are common between them to get a clear understanding of how water pumps work.

In order to understand how water pumps work, make a point of understanding the main elements of most water pumping systems. These are the impeller, motor, reservoir and centrifugal pump. Here, are two different types of pumps that utilize all of these elements in their functioning.

The pressurized water pumps

This type of water pump has a contoured chamber, an impeller, pressure tank and pressure switch. The impeller is what pumps water into the contoured chamber and the water leaves the outlet with a lot of pressure due to the contoured design.

The pressure tank is a reserve for excess water, and it also maintains the water pressure in the system application. Pressure is maintained with the help of a rubber bladder embedded within the metal tank which also prevent the water pump from turning on and off frequently (hard cycling) thereby destroying the pump motor and any plastic fittings on the pump.

This bladder is also filled with a sufficient amount of air, around 40 pounds so that the equilibrium of the system is maintained well. This allows water to flow out of the kitchen or bathroom taps at a reasonable pressure. Pressurized water pumps must have a pressure switch that electrically maintains the pressure of the entire system. The switch can be adjusted by the owner, but in most cases, it comes preset by the manufacturer.

The centrifugal water pumps

This type of water pump also has an impeller which simply channels the water inside the pump. With the centrifugal pump, the high speed of the impeller introduces centrifugal force which compresses water with a high pressure on the outlet and through the pipe. These pumps are created with a rotor that has coils surrounding it with a number of magnets.

Whenever the motor is activated, a magnetic field is created that allows the rotor to spin continuously, driving the impeller to spin extremely fast and generate enough power to pump water to the desired direction.

Common features that make up most pumps available today

In most cases, the similarity of water systems lies in their outlet components. The tank or reservoir must be there to store water that is pumped even when the taps 0or any other fixtures are not opened. The tank must have an air bladder to maintain pressure as discussed above. A switch must be in place so that whenever the pressure hits a certain preset level, it turns off automatically in order to stop the pump. Other pumps like the jet pumps must have elements such as an electric motor, impeller and a centrifugal pump which help to explain how water pumps work.