Patent GB-768809-A (GB)
Title: Improvements relating to horizontal coke oven batteries
IPC: C10B41/02
Filed: 1955-04-27
Abstract: 768,809. Multiple fastenings; sliding bolts; fastenings operated from a distance. KOPPERS GES., H. April 27, 1955 [April 28, 1954], No. 12121/55. Addition to 741,398. Class 44. [Also in Groups XII and XXVIII] In apparatus for discharging horizontal coke oven batteries having a locking device associated with the latch of one or both doors of each oven and operable by fluid pressure as disclosed in the parent Specification, pipe coupling parts on the coke guide machine and on the various control conduits at the coke side of the battery are eliminated. The preferred embodiment comprises a battery of coke ovens 1, conventional pusher and coke guide machines 6 and 7 with a quenching car 13, and a control conduit 15 interconnecting locking devices 22, 22a engaging the latches 16, 16a of each set of doors 2, 2a. Low and high pressure air mains 19 and 20 respectively extend along the coke side of the battery, and a cam-operated, four-way control valve 17 is provided at each oven, by which either of the mains may be connected to the appropriate control conduit 15. Hydraulic liquid may be used instead of air as the operating fluid. A jack 18 (see Group XXVIII) is connected to each conduit 15 and is arranged to give visible indications when the pusher machine is positioned for the removal of a door and for the discharge of an oven respectively, and also to control the release of the pusher ram motor. Each jack 18 is mounted on girders 62 which carry a rail 64 engaging rollers 65, 65a supported from the cross-head 66 of an arm 67, Fig. 7, resiliently located in a sleeve 69 pivoted on a hinge pin 68 on the pusher machine. The cross-head 66 carries parallel members 75, 77 on which the rollers 65, 65a are mounted and a lever 76 engaging the tip of the jack. The lever 76 carries two plates 90, one of which engages a bellows 91, and the other the plunger 101 of a switch 100 in the power circuit of the pusher ram motor. The tip 80 of the jack 18 has two positions according as the jack is connected to the low or the high pressure air main through the control conduit 15. The pivoted arm 67 and its associated apparatus is duplicated on the pusher machine, and positioned to engage the tip 80 when the door handling mechanism 37 and the pusher ram 10 are respectively in alignment with the oven. Each bellows 91 is connected by pipes 96, 96a to a bellows 92 operating a pivoted indicating lever 93 which moves over a scale 95 to the mark 104 when the jack is connected to the low pressure main and to the mark 105 when it is connected to the high pressure main. In operation, when the pusher and coke guide machines 6 and 7 are positioned to remove the doors from an oven 1, the coke guide machine operator actuates a lever 23 on the control valve 17 to connect the low pressure main 19 to the control conduit 15, thereby releasing the locking devices 22, 22a from the door latches 16, 16a, and moving the indicator arm 93 to the mark 104 on the scale 95. The doors are then unlatched and removed by the door handling mechanisms 24 and 37. The pusher and coke guide machines are then moved into the positions shown in Fig. 2 and the flopper plate 9 is locked in position by a lever 25, movement of which also brings a fluid-pressure operated jack 29 carried by a lever 28 up to the operating lever 23 on the control valve 17. Movement of the quenching car 13 into position rocks a lever 34 controlling a valve 31 connected to a compressor 33 mounted on the coke guide machine and admitting air to the jack 29. This moves the operating lever 23 of the valve to connect the control conduit 15 with the high pressure main 20, resulting in a full extension of the jack 18. Provided the pusher machine is correctly positioned, the pusher ram motor switch 100 is closed by release of the plunger 101, and the indicating lever 93 moves to the mark 105 on the scale 95. After discharge of the coke, the quenching car is driven away, and the lever 34 falls by gravity, operating the valve 31 to exhaust pressure fluid from the jack 29 and releasing the operating lever 23 to move the control valve 17 into the exhaust position.