Find the structure of the urinal toilet

About the internal structure of the toilet:

The passage inside the toilet hides a U-shaped pipe. This U-shaped design is very important, its A end is open, from which the water of the poop and the water tank enters, and the B end is a large turn, which is connected to a pipe that goes straight down, and this pipe will be connected to the sewage mouth and sewage pipe, so that the poop goes straight to the septic tank underground. You can imagine that according to the principle of connecting pipes, the water level at both ends of the U-shaped pipe should be of equal height, so the water level at the A end and the B end will be the same, unless, the water level at the A end is raised to exceed the highest point of the turn at the B end, at this time, the sewage at the B end will overflow and fall down along the sewage pipe, which is why it is called a flush toilet.

Let's follow the facts. When you're done, pull down the switch of the tank, and the water from the whole tank pours down and is injected into the A end, and the water level increases, and the water level at the B end of course also rises, and it is higher than the highest point, and the filth that is strongly washed into by the water will be like falling into a cliff, and it will be gone forever!

However, when the water level has stabilized, there will be a section of water left in the U-shaped pipe, and the water level is exactly equal to the height of the B end, which is why we see that there is always a small pool of water at the bottom of the toilet.

Brainstorming, now you can understand why no matter how much water we pour into the toilet, the water surface always stays the same (unless, the pipe in the toilet is too plugged)?

Speaking of which, I have to sincerely praise the design of this U-shaped pipe, because the water left in the pipe forms an effective barrier to block the odor of urine and feces floating up the pipeline, and can keep the indoor air fresh and clean. In our homes, the dishwashing in the kitchen, the washbasin in the bathroom, and the water pipes connected to the bottom are also often designed with this U-shaped pipe, all to isolate the odor in the sewage pipe.

The washed out mum and other sewage and filth will run through the pipes of the building and go down to the septic tank buried in the ground; The septic tank is like a small domestic water and fertilizer treatment plant, where the sewage will ferment, heat up and sterilize. Every once in a while, we have to hire a cleaning company's fertilizer truck to help clean up the accumulated dirt in the septic tank to keep the home environment clean and healthy. Reprinted from.