| 摘要 |
mechanical engineering. SUBSTANCE: inflatable cock is designed to shut off separate branches of water-supply line of industrial plants, for example, meat-packing plants, milk plants, fish factories and tanneries in case of performance of repair and welding operations. Inflatable cock for remote-control pipelines has bowl-shaped body with flange, two through holes and two branch pipes, flat cover with pipe connection for control medium, and membrane clamped between flange and cover. Membrane is made of one or several layers of sheet rubber. Position of branch pipes provides for forward flow of liquid relative to cock. Branch pipes are stretched along sides of bowl-shaped body to increase width of space between through holes in bowl and to form surface between them for pressing of membrane when cock is shut off. Through holes of bowl-shaped body are provided with partitions. EFFECT: enhanced cock reliability and durability. 4 dwg
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