Patent GB-909810-A (GB)
Title: Improvements in or relating to means for charging the ovens of horizontal coke oven batteries
Inventor: RANDELL GEOFFREY EDWARD CHARLE
IPC: C10B31/04
Filed: 1959-12-22
Abstract: 909,810. Charging coke-ovens; handling charging lids for coke-ovens. WOODALLDUCKHAM CONSTRUCTION CO. Ltd. Dec. 14, 1960 [Dec. 22, 1959], No. 43573/59. Classes 51 (2) and 55 (1). In apparatus for charging horizontal cokeovens with four charging holes in which charging hole lids are removed and replaced, arcuate valves for the charging car coal hoppers and one or more telescopic shoots therefor are operated in sequence by hydraulic jacks as disclosed in Specification 909,809, the sequence of operation of the jacks is controlled by an hydraulic system initiated by the battery top man, operating a readily accessible control unit 57. The hydraulic control system, which is carried by the charging car 9, comprises a power unit 56 including a reservoir a motor 60 driving a pump 61 and pressure and flow control valves and filters, the control unit 57 carrying various control valves, an electric control unit 58 including a panel carrying controls for the motor 60 and switches controlling hopper vibrators, and four sequence units 59 controlling jacks 31, 35 removing or replacing lids 5. At each charging hole lid 5 is removed, arcuate valves 49, 50 are opened, the hopper vibrator is actuated if required, valves 49, 50 are closed, and the lid 5 replaced. In addition, and at the last charging hole, telescopic shoot 39 is lowered prior to opening the arcuate valves and raised after closing said valves. Shifting of one of the valves 72 on the control unit 57 to the " lid off " position admits fluid by line 82 to the appropriate sequence unit 59, changing over reversing valves 74, 75. Movement of valve 74 ensures that air from port 35a of jack 35 reaches four-way valve 67 retaining jack 31 retracted, and operation of valve 75 allows air from port 31a of jack 31 momentarily to reach four-way valve 66 thus reversing it and causing jack 35 to extend. At the end of its stroke, pressure at port 35b lifts sequence valve 76, and fluid passes through valves 74 and 69 to reverse valve 67 causing jack 31 to extend. When fully extended, pressure at port 31b lifts sequence valve 80 and fluid passes through valves 75 and 68 to reverse valve 66 causing jack 35 to retract. At the end of this stroke, pressure at port 35a lifts sequence valve 77 and fluid passes through valves 74 and 69 to reverse valve 67 retracting jack 31. When the latter is retracted, pressure at port 31a attempting to lift valve 79 is overcome by pressure in line 84. A similar sequence of operations in reverse is initiated by shifting valve 72 to the " lid on " position. In the interval between the operations control valve 94 is actuated to operate jacks 53 controlling the arcuate valves 49, 50, and in the case of hopper 14 the telescopic shoot 39 is lowered and raised at the appropriate time by control valve 98 operating jack 42. An interlocking valve 99 prevents movement of the lid-moving jacks 31 and 35 while the shoot is moving. The whole charging operation can be made completely automatic being initiated by the battery top man. Specification 909,807 also is referred to.