GAS COLLECTING APPARATUS FOR COKE OVENS

1381899 Gas collecting device SIMON CARVES Ltd 24 Oct 1972 [28 June 1972] 48910/72 Heading C5E A gas collecting device for a coke oven battery. by which gas can be drawn off from each oven. through an ascension pipe 14 and bend 17 selectively into one of two collecting mains, comprises two drain pipes 32, 42, arranged side by side in a lower part of the bend, each communicating with one of the mains and arranged to be sealed selectively by a pivotable cup 30, 40 and each associated with a sprinkler 51, 52. The two collecting mains may be constituted by a single pipe 19 divided into two mains 33, 43 by a continuous partition wall 20 fitted generally in a vertical position to the top part of the pipe wall, each of the mains being connected to each bend by one of the drain pipes. The pivotable cups can be pivoted on shafts 31,41 extending parallel to each other and to the collecting main, and projecting through a housing, the shafts being rotatable to pivot the cups. A lever arm extends radially from each shaft extension substantially diametrically opposite its associated cup and carrying at its free end a roller, the rollers of the two arms being arranged to contact a guide rod when the cups are in a sealing position, the guide rod extending transversely to the collecting main and being movable longitudinally in two directions selectively to release the rollers and associated arms to enable the cups to pivot downwardly under their own weight. The guide rod is so arranged that in a central position of longitudinal movement, the rollers of both adjusting levers are in abutment with the rod and both cups are in the sealing position, while each end of the rod carries a ramp causing release of one of the rollers in each end position of the rod whereby only one lever is retained thereby and only of the cups is in the sealing position, the other being in the open position.