In ancient times, the use of kinetic energy in the natural world was only wind and water. It was not until the invention of the steam engine that thermal energy was effectively converted into kinetic energy. The water drain invented in ancient China is a machine that converts the potential energy of water flow into kinetic energy that can be used for production through water wheels, shafts, cranks, etc., thereby greatly saving manpower and improving production efficiency.

Water drain is a machine invented by Du Shi during the Eastern Han Dynasty to use water energy to blow iron. Before this invention, iron blasting was mostly driven by human or animal power. The invention of the water row realizes the conversion of the power of the water flow into mechanical kinetic energy, thereby driving the skin of the blast, and by controlling the speed of the water flow, the speed of the blast can be adjusted to provide continuous and stable kinetic energy. Greatly improve the efficiency of iron smelting.

The principle of the water row work is to select the shore of a turbulent river, erect a wooden frame, erect a rotating shaft on the wooden frame, install a large horizontal wheel on each of the upper and lower ends, and install leaf plates around the shaft of the lower horizontal wheel to bear the water flow. Is a device that transforms hydraulic power into mechanical rotation; a drum-shaped small wheel is installed in front of the upper horizontal wheel, which is connected with a string of the upper horizontal wheel; a crank is mounted on the top of the small horizontal wheel, and then the crank is installed again A swingable connecting rod. The other end of the connecting rod is connected to a ear on the horizontal shaft. A straight wood is installed between the other ear on the horizontal shaft and the disc fan. In this way, when the water current hits the lower sheave, it drives the upper sheave to rotate. Because the upper lying wheel and the drum small wheel are connected by a string, a rotation of the upper lying wheel can make the drum small wheel rotate for several weeks, and the rotation of the drum small wheel drives the top crank to rotate, which makes and The connected connecting rod moves, and the connecting rod drives the straight wood to reciprocate through the ear and the horizontal axis, so that the exhaust fan is opened and closed for air blowing.

The water row cleverly utilizes water wheels, belts, cranks, connecting rods and other devices to convert the potential energy of the water flow into mechanical kinetic energy, which can completely get rid of the constraints of human and animal power and work back and forth on its own. At the same time, for ironmaking, the temperature requirements for fire are extremely high, and water discharge energy provides stable kinetic energy, which largely solves this problem.

The invention of the water drain fully reflects the wisdom of the ancients. They observe nature, summarize and learn in production, and successfully transform natural forces such as wind and water into kinetic energy that can serve production, and realize the effective use of natural forces. Compared with today's human beings using hydropower and wind power, there is no substantial difference!Editor / Zhao Yongjing