The official name of the toilet is toilet, which is a covered bucket for defecation. The history of toilets can be traced back to the Han Dynasty. At that time, the toilet was called nothing, which was dedicated to the emperor. Legend has it that it is made of jade.
It was held by eunuchs who served the emperor specially for the convenience of the emperor at any time. Later, in the Tang Dynasty, because there was a man named Li Hu in the royal family, he changed his name to Beast or Maiden in order to avoid taboo.
Later, in the circulation, it evolved into the name of the toilet. There are many kinds of toilets, both split and conjoined. With the development of science and technology, there are many novel varieties, such as toilets using siphon, spiral siphon, jet siphon and super spiral siphon.
The choice of toilet depends on the direction of sewage discharge. If it's in the back row, you should choose the toilet and directly discharge the dirt with the help of the impulse of water. The flushing sewage outlet is large and deep, and the sewage is directly discharged by the impulse of flushing water. The disadvantage is that the flushing noise is loud.
If it is in the lower row, you should choose a siphon toilet. There are two kinds of siphon subdivision, jet siphon and vortex siphon.
The principle of siphon toilet is to use flushing water to form siphon effect in sewage pipe and discharge the dirt. Its sewage outlet is very small, so it is very quiet to use. The disadvantage is that the water consumption is large, and generally 6 liters of water storage is used up at one time.