What is a pump? What is the pump used to do?

Pumps are machines that transport liquid or pressurize liquid. It transfers the mechanical energy of the prime mover or other external energy to the fluid, increasing the fluid's energy. The prime mover drives the impeller to rotate through the pump shaft, doing work on the liquid to increase its energy, transporting the liquid from the sump to a height or where pressure is required. The use of pumps: Pumps are widely used, it can be said that in all sectors of the national economy, where there is liquid flow, there is a pump at work, the main pump applications are: farmland irrigation and drainage, urban water supply and drainage, oil , Chemical, electric power, textile, machinery, power, civil engineering, energy, transportation, water conservancy, shipping, shipbuilding, mining, aerospace technology.