What is the toilet bowl siphon effect

Interpretation of the working principle of the siphon toilet: The siphon type is a siphon phenomenon formed after the flushing water is filled with water in the sewage pipe (usually called the water storage curve) of the toilet to discharge the dirt. The structure of a siphon toilet is characterized by a complete pipe inside the toilet.

The shape is sideways "S" shape, the water level difference when the water is supplied to promote the formation of siphon effect, because the dirt is not washed away by hydraulic power, the slope of the pool wall is slow, and the bottom of the pool also expands the water storage area, which solves the shortcomings of excessive flushing noise.

Siphon principle: It is the principle of the communicator. The siphon is filled with water, there is no gas, the water level at the incoming end is high, and the water outlet is closed with the palm of the hand or other objects.

At this time, the pressure in the tube is equal everywhere. After everything is settled, open the water outlet, although the atmospheric pressure on both sides is equal, but the water level at the incoming end is high, and the pressure is strong, pushing the incoming water to flow out of the outlet. Principle Summary:

Due to the pressure difference at work. When the pressure of the same liquid level on both sides of the elbow is different, the water (or other liquid) in the pipe will flow to the side with less pressure.

Three conditions must be met to utilize the siphon principle:

1. Fill the tube with water (or liquid) first.

2. The height of the highest point of the pipe from the water surface of the container shall not be higher than the height of the water column supported by atmospheric pressure.

3. The water surface of the water outlet must be lower than that of the upper container. In this way, the downward pressure (atmospheric pressure of adding water) to the outlet sheet is greater than the upward atmospheric pressure. Ensure the outflow of water.

Due to the pressure difference at work. When the pressure of the same liquid level on both sides of the elbow is different, the water (or other liquid) in the pipe will flow to the side with less pressure.

To be able to produce siphoning, the water outflow end of the elbow must be lower than the water inlet end. Let the horizontal plane of the inlet end be A, the horizontal plane of the outlet end is B, and the atmospheric pressure value acting upward on the two horizontal planes is P0, but there is a water column of long h below the A surface in the right pipe, so the pressure P P0 gh on the same surface as A in the right pipe, that is, Po P, will cause the water column in the pipe to flow to the right pipe, and finally flow out from the B end.

Note: The elbow should be filled with water in advance, and the air can not enter the whole elbow, otherwise, the pressure of the internal air will change the relationship between the pressure difference between the two ends, and the siphon phenomenon cannot occur.

While flushing, the siphon effect is achieved through a special curved pipe, and the dirt is quickly discharged.

They say a whole bunch of things that you and I can understand.

The flush toilet is relatively loud

The siphon sound is relatively small