A water pump is a machine that transports or pressurizes liquid. It transfers the mechanical energy or other external energy of the prime mover to the liquid, which increases the energy of the liquid. Mainly used for conveying liquids, including water, oil, acid-base liquid, emulsion, suspension emulsion and liquid metal.

It can also transport liquids, gas mixtures and liquids containing suspended solids. The technical parameters of pump performance include flow, suction, lift, shaft power, hydraulic power and efficiency. According to different working principles, it can be divided into positive displacement pump and vane pump.

Extended data;

The water pump appeared around 300 BC. Archimedes invented a kind of pump called Archimedes screw pump, which is still produced by manufacturers. The pressure pump invented by the Greek Ketcibius (285-222 BC) is a primitive piston pump.

It is mainly used to produce water column and lift water from wellhead. It is still preserved in ancient Roman ruins, such as Silchester, England. As a kind of chain pump, the square plate chain pump which appeared in the Southern and Northern Dynasties in China is an important invention of pump machinery.

1475, Francesco Di Giorgio Martini, an Italian Renaissance engineer, put forward the original model of centrifugal pump in his paper.

1588, Italian Agostino Ramelli published Le Diversity t Artificio se Machine del Capitano Ramelli at his own expense.

This book describes in detail many tools and mechanical equipment that were successfully manufactured and became commodities after two or three hundred years. There are descriptions about chain pump, water pump and vane pump.

Reference source; Baidu encyclopedia-water pump