A pump is a device which moves slurries and fluids with the help of mechanical action. Pumps can be classified into three major groups according to the method they use to move fluid: displacement, direct lift or gravity pumps.
The design of a conventional water pump is to take the existing water and increase the rate of flow of water. By speeding up the water in the pump, the pump is creating a lower pressure at the inlet and thus creating a vacuum. The water comes in from the low-pressure side, the outlet of the pump gets a higher pressure and pushes the water out.
An impeller inside the pump housing is like a propeller blade, but not so dramatically curved. Hence creating a low pressure on one side and a higher pressure on the other. Every pump is supposed to have a screw to create a suction force. The pressure differential pulls water, or liquid toward the low pressure and out the high-pressure side, much like an airplane pushes air rearward to propel forward. It is then sealed with a double or triple neoprene rubber to avoid wear and tear.
New cars use an electric temperature controlled fan that will continue to cool the engine even after shut down.
- Downstroke: When we lift the handle of the water pump is upwards, the piston gets pushed down. This is known as downstroke. In this condition, the volume of the lower part decreases while the pressure increases. As a result, water from the lower level increases.
- Upstroke: The handle of the water pump is pushed down and the piston shifts upward. Water pressure increases and water level decreases. And water comes out if the spout.
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