Drainage vent pipe system thattop ventilation pipe, main vent pipe, side vent pipe and the vent pipe, combined with annular ventilation pipe, vent pipe, vent pipe confluence device and special ventilation pipe types, respectively for different positions, which cover type ventilation tube for water tank and water tank installation. The utility model relates to a cover type ventilating pipe, which is a pipe with the same atmosphere, which is provided with the air circulation in the drainage system, the pressure is stable and the waterproof seal is damaged.
The hood can be divided into four points:
1, the drainage pipeline of toxic and harmful gases discharged to meet the health requirements;
2, the ventilation pipe to the reservoir, water tanks and drainage pipes to add fresh air, in order to reduce the corrosion of metal pipes, extend the service life;
3, reservoir, water tank ventilation should be set up two or more of the pipe to improve the capacity of the drainage system, (for example, when a drip bottle down to liquid outflow, must be inserted a snorkel, one end through the atmosphere, through the gap between the end surface and the bottom of the bottle, the negative pressure, to prevent the formation of to ensure the smooth drainage pipe) to prevent stagnant water formation, odor, reduce the pressure fluctuation, the protection of water, to prevent water damage.
4, can quickly in the reservoir and the water tank of water vapor and harmful gas discharge, built-in gauze gauze gauze can effectively prevent the prevention of impurities, insects and dust into the destruction of water quality.
1, ventilation pipe is arranged the gas flow rate is m/s, the average flow rate of 0.75m/s gas filter layer, the filtering layer should be installed with the same materials were stitched inside cover Wudu non-metallic material made available;
2, according to the thickness of the soil layer (H3) 0.0m, 0.5m, 1.0m three kinds of design, 0.0m applies to the south, 0.5m applies to the central region, 1.0m is suitable for cold areas.
3, after the rust, corrosion resistance requirements according to customer design requirements.
4, the conditions of regional ventilation cap can be designed according to the requirements of glass fiber reinforced plastic or stainless steel material, in order to achieve better corrosion and prolong service life