The Chinese noria is also known as the “rotating water drum car”. A kind of tool structure that uses water flow as energy to draw water for field irrigation. It has an upper and lower wheel half submerged in water. There is a wheel belt between the two wheels. -long bamboo tubes on the wheel belt. When the running water reaches the water wheel below, the bamboo tube is filled with water, and the river water is brought to a higher place from bottom to top and poured out. A roller is a scraper-type continuous water lifting machine, also known as a keel water wheel. It is one of the most famous agricultural irrigation machines in ancient China. The "Book of the Later Han Dynasty" records that Bi Lan made a wheel and was upgraded by Ma Jun of the Three Kingdoms. The turning can be operated by hand, pedal, cow, wateror by the wind. The keel plate is used as a chain, laid in a rectangular slot, and the body is tilted by the river or pond. The lower gear and part of the car body were submerged in water. By driving the gear, the blades will scrape the water along the groove and move up, and send the water to the upper end of the long groove. Such a continuous cycle transports water to where it is needed and can continuously draw water, which greatly improves efficiency and is easy to use and transport. The water intake point can also be transferred in time for irrigation and drainage. The first application of chain transmission in ancient China was in overturning, which was a major improvement in agricultural irrigation machinery.
Water drainage: This is a water conservation device used for iron smelting in ancient times.e China. Most early human blowers were skin bags. A furnace uses several bladders, which are assembled and arranged in a row, called a "water row." Using water to push these bladders is called "water row." Water drainage was invented in the early Eastern Han Dynasty. It was invented by Du Shi (?-38), the prefect of Nanyang, based on a synthesis of the practical experience of workers.
~~Potential energy is converted into kinetic energy, then into electrical energy~~