The bathroom drain pipe is made of a trap, why does it still stink?

The interface is not sealed, although the problem of the sewer pipe is solved, but the sewer pipe and the ground interface are not sealed, it will still smell bad.

The reason may be that it is not flushed, or the trap is not correct, and the stored water is not ,... enough

Answer: The trap refers to a fitting with a water seal set on the drainage pipe section. Its most significant function is to prevent odors, and to reduce odors by storing water to isolate gases. In addition, the standard trap lower access opening is closed with a screw cap, which can be unscrewed for unscrewing if the pipe is clogged.

Main channels: First, the floor drain is not odorproof, second, the connection between the bathroom cabinet drain pipe and the sewer pipe is not sealed, the third is the toilet backsmell, and the fourth is that the bathroom exhaust fan is not installed with a check valve.

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The bathroom drain pipe has been made a trap, is it all done? For example, the floor drain to see if the water seal is not enough, if so, there is also a problem with the aftertaste, in short, there must still be a problem, check it well, and solve it completely.

1. Bathroom equipment such as washbasins and toilets are not tightly sealed at the connections without sewer pipes.

2. Floor drain. There is no water seal, and no odor-proof floor drain is used, resulting in dirty air entering the room through the floor drain hole.

3. The vent on the ventilation duct does not use a check valve.

or the check valve has no ventilation duct and the contact part is not tightly sealed.

4. The water seal in the trap fails, that is, the trap naturally dries up due to not being used for a long time.

5. Siphon. If you want to completely solve the problem, it is recommended that you install an imported suction valve to solve the problem of aftertaste in the toilet and increase the drainage speed.

Many owners have such a puzzle: when the drainage pipe of my house is renovated, the drainage points are obviously made of water traps, how can there be a peculiar smell? Especially after using it for a period of time after decoration, the smell is greater.

In fact, many times, the problem is just the trap. We first need to understand the types, working principles and components of the trap.

There are two types of traps: one is a "P" bend and the other is an "S" bend. The "P" bend is composed of a half-bend, a "V" shaped part, and then a short pipe to connect the two; The "S" bend consists of two "V" shaped parts, which are connected by a short tube.

Most of the time the "P" bend is used. The "S" bend is only used in a few special cases.

There are two types of traps: with and without access openings. Normally, sunken toilets are used without access openings. The one with the access port is generally used for surface installation. For example, the kind of bathroom that is not sunken, and the drainage pipes of the bathroom are all on the roof downstairs.

As for the principle of the trap, it is very simple, it is to store the water there"V"type, use water to isolate the odor. Don't let the smell come over. But here's one thing worth noting:

When making a trap, the short pipe connecting the "V" part to the half-bend should not be less than 6 cm long. Otherwise, the trap is a fake trap that can only hold half or two-thirds of the water. Because the gap is not enough.

Many people ignore this point when making a trap, and some even have a "V" part and a half bend completely next to each other, and such a trap is meaningless at all. In particular, some people don't want the toilet to be raised, so they let the workers find a way. The worker had to make a trap in the squatting urinal.

When making a trap, in order to make the trap lower and lower, the "V" part and the semi-curved saw a little bit so that it is lower, and then buy a squatting toilet without a trap to install it, so that you don't need to raise the ground. As everyone knows, the consequence of this is that it directly affects the effect of anti-odor. Because the trap is not full of water at all.

It doesn't play a blocking role.

Hello, the general bathroom is installed with a trap will not have a smell, it may be the smell of the yellow unclean matter remaining at the upper end of the pipe, take the toilet cleaner to clean it thoroughly, and rinse it frequently to eliminate the odor.

Hello! If you have installed a trap in the toilet drain pipe (the developer will usually install a trap for the toilet drain pipe), a squatting toilet with a trap cannot be installed. In fact, the advantage between with and without a trap is not very large, and the squatting toilet with a trap is only odor-proof.

Even if the toilet drain pipe has a trap, there is a situation where the smell may regurgitate at the first noise. This could be due to one of the following reasons:

Insufficient water in the trap: The amount of water in the trap is insufficient to form an effective water seal, resulting in odor reflux.

Leakage in the trap: Leakage in the trap will cause the water in the trap to gradually decrease, which will not effectively protect the water seal, resulting in odor regurgitation.

Clogged pipes: Clogged pipes can cause sewage to not be discharged in time and remain in the pipes, resulting in odors.

Unreasonable pipeline design: Unreasonable pipeline design leads to insufficient pipeline slope and inability to discharge sewage in time, resulting in odor reflux.

Therefore, if your bathroom drain pipe has a trap but still has a foul backflow, it is recommended to check the design and maintenance of the drain to ensure that the orange locust pipe is unblocked and the trap is effectively protected. At the same time, consider replacing the trap or other odour prevention measures to minimize odor reflux.

Pro, why does the bathroom drain pipe stink when it has a water trap: there is a trap and it smells because the water seal height is not enough. In the water supply and drainage project, there are clear requirements for the height of the water seal, the standard requires that the height of the water seal should not be less than 50mm, and the best range is within 50mm and 100mm, so as to ensure the normal operation of the water trap, so as to achieve the effect of anti-odor, slow down the breeding of bacteria and insects into the room.

Some sanitary appliances due to the use of the interval time is too long, especially the floor drain, there is no water for a long time, the water in the inner spike of the water seal continues to evaporate, the height of the water seal decreases, and the water seal loses its effect, which is the main reason for the overflow of the odor of the missing branches. It is recommended to regularly fill the trap with water, maintain a certain water seal height, drain the old and dirty water in the trap, and replace it with fresh and clean water.