PNEUMATIC VALVE VALVE FOR SEALING OF DRAINAGE SYSTEMS AND RETAINING OF CHEMICAL SUBSTANCE

摘要

The utility model relates to public utilities and relates to a shut-off device for blocking the pipelines of drainage systems and storm sewers, used to contain a spill of hazardous chemicals. The technical result of the patented solution is to increase the protection of storm sewers from dangerous contaminants due to the reliable fixation of the air chamber in the pipeline and the auto-centering of the cylindrical chamber in the pipe when it is activated, which ensures its exact position in the pipe and filling of the in-pipe space without the formation of gaps between the chamber walls and the inner surface sewer. The pneumatic shut-off valve for sealing drainage systems and holding the spill of chemicals contains an elastic cylindrical chamber with sleeves at the ends and a chamber fixing mechanism in the pipeline, the chamber sleeves are pressed into two tubular covers by clamps between which a reinforced tube is fixed with a threaded fastening with holes on surfaces and shaft movably connected by means of a sleeve mounted in a tool tray formed in the inner surface of the reinforced tube and, and fixed in it by means of a retaining ring, tubular guides are coaxially fixed on the tubular covers, into which the calipers are inserted diametrically and supported by nuts, nuts are installed on the ends of the guides, while one of them is blind and the second is connected to a fitting made with the ability to connect to the air line to supply air to the chamber through a tubular guide and a reinforced tube with pressure holes, from the nozzle side a camera fixing mechanism is fixed in the pipeline, including earrings, on the one hand coaxially mounted on supports, and on the other hand, on studs that can be moved along the studs on which the filter is fixed on one side and the ring-shaped fastening element for engagement with the end of the sewer pipe of the pipeline on the other side, between the ring-shaped element fastenings and the filter the shell fixed on hairpins is installed.