In building drainage pipes, water seal refers to setting a water column with a certain height under the drain of sanitary ware to resist the change of air pressure difference in the drainage pipe and prevent the gas in the drainage pipe system from escaping into the room, usually through the trap. Water seal is a method to separate two parts of gas by water.
This method is most commonly used in domestic toilets, followed by industrial ventilation isolation, such as zipper water seal device under sintering machine, but the biggest disadvantage of water seal is that the airflow contains water vapor, which makes it inconvenient to use electric dust collector (which is easy to corrode the dust collector).
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Matters needing attention in using water seal:
1, replenish water in time and maintain a certain water seal height.
The water seal of the trap is easily damaged due to insufficient water seal depth and other reasons. Some sanitary wares, especially floor drains, have been used intermittently for a long time, and the water surface of the water seal is constantly evaporating, losing its water seal function. This is the main reason for odor escape. Therefore, managers are required to have common sense in this field, and it is necessary to regularly inject water into the trap of the floor drain to maintain a certain water seal height.
2, regular cleaning
Ordinary floor drain can only filter out larger impurities, and some tiny substances can easily enter the trap through the floor drain, thus causing dirt deposition in the pipeline. After a long time, all kinds of bacteria and microorganisms can easily breed in it, thus entering the room through pipes, producing various odors and endangering the health of family members. Therefore, it is necessary to clean the trap in the pipeline regularly during use.
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