Whenever we open the toilet cover, we will see a water level of a certain height sealing the toilet drain pipe opening. This is the water seal of the toilet. Since the standards of each country are different, the height of the water seal is also different: in China, the current general water seal height range is ≥50 mm according to the national standard. At present, the water seal of imported toilets is higher, and the water seal of Japanese toilets is higher. It is generally 60 mm, 70 mm in the UK, and as high as 75-80 mm in the United States. So what is the real role of the water seal? Mainly the following two points:
1. Anti-odor effect: Because all the odor in the bathroom is transmitted to the room through the sewage pipe. As long as the connection between the sewage pipe and the toilet is sealed, the odor will not be transmitted into the room. Therefore, in addition to sealing the bottom of the toilet with a sealing method when installing the toilet, it is also necessary to seal the seat with water. Only the pipes of the toilet itself are sealed well to completely block the odor.
2. It is the pressure guarantee for the second flush: because there is still a distance between the sewage from the toilet and the main pipe. If there is no pressure formed by the water seal in the pipe of the toilet itself to suppress the biogas that rushes up in the sewage pipe, the sewage will not be completely discharged to the main pipe simply by relying on the momentum of water from the toilet flush eye. of. In a siphon toilet, the height of the water seal is an important factor that affects the size of the siphon force and the drainage function. For a siphon toilet, the higher the water seal, the stronger the siphon force, and the stool and water can be quickly removed be discharged.
At this time, someone may ask, isn’t the higher the water seal, the easier it is to splash water? But in fact, what the experiment tells us is that the higher the water seal is and the closer it is to the buttocks, the smaller the impact of feces entering the water seal, and the lower the possibility of splashing water. Although these are all reasonable in theory, they are not always like this in real life. Everyone’s living habits and health conditions are different, and the shape of their feces is different. Some people will have diarrhea after eating unclean food, and some people will have diarrhea after eating unclean food. People who take too many supplements are not the same. So if you want to solve this problem, a relatively simple method is to pull a piece of paper to cover the water before pulling. You can pull as much as you like without fear of splashing water.
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