Water mill, a single-disc grinder designed specifically for grinding terrazzo floors, has gradually replaced traditional manual grinding methods since its birth in the early 1980s. In the 1950s and 1960s, my country's terrazzo floors mainly relied on manual hand-held grinding wheels for friction grinding, which was inefficient. With the development of technology, people fixed grinding wheels and sandpaper on a frame made of wooden strips, and used pressurized stones and human drag to improve efficiency, but it still looked clumsy.
For this reason, water mills came into being and became an innovative work of the old water mills. In Hunan, this machine is called a grinder or floor grinder, and the floor is called a polished floor.
The water mill is fixed to the grinding disc through a diamond grinding block (single-grain grinding head) to grind the newly made terrazzo and cement floors. The grinding disc has a moderate diameter of 25-35 cm, and is directly driven by a motor, belt and pulley, without a gearbox for speed change. The grinding disc speed is maintained between 1000-2000 rpm. In order to reduce friction resistance and flush the mud, the machine needs to be directly connected to the tap water pipe for flushing. This water mill has a simple structure and is affordable, so it is still popular in rural and suburban construction fields.
However, with the development of technology, more advanced grinding machines are now emerging on the market. These machines can not only be used for grinding floors and stones, but also for grinding, polishing, crystal surface treatment and other processes. Some models even support driving grinding and speed-adjustable grinding to meet different ground process requirements. At the same time, dry grinding models are also equipped with dust collection devices to make the grinding process more environmentally friendly and efficient. The birth of these modern machines has undoubtedly brought the functions of water mills to a new level.
