Pneumatic closure device is composed of valve body, airbag sealing component, air station, control cabinet, SCADA system, rain gauge, camera, liquid level sensor, installation accessories, etc. Suitable for rainwater or sewage environment, it is a new product developed by black and smelly water treatment, source control and pollution interception project. It is a closure device for drainage system, instead of the traditional flat gate. Easy control, simple structure, small footprint, easy installation and maintenance, rubber aging resistance and long service life.

    Cover and rubber sleeve, cover and sealing rubber sleeve connection, gas cavity, on the cover is equipped with air inlet, rubber sleeve has certain elasticity, and filling the compressed gas in the chamber, the gas pressure makes the rubber sleeve to tighten, realize the closed channel of the river, when releases pressure gas chamber, rubber sleeve recovery deformation, Realize the action of opening the intercepting channel.