Patent GB-682811-A (GB)
Title: Improvements in apparatus for cleaning the sealing means of self-sealing coke oven doors
IPC: C10B43/04
Filed: 1950-07-26
Abstract: 682,811. Cleaning pipes. KOPPERS GES., H. July 26, 1950 [Sept. 2, 1949], No. 18671/50. Class 99 (ii). In apparatus for cleaning the sealing means for the self-sealing doors 8, Fig. 1, of horizontal coke ovens, such apparatus comprising mechanically operated cleaning tools 10, 17 which are adapted to be pressed against and traversed over the surfaces 6, 7 of the door frame 5 and door 8, respectively, of an oven chamber, the tools 10, 17 being arranged on a supporting structure, such as a carrier 9, Fig. 3, which is movable transversely of the axis of the oven chamber, and the tools 10, 17, Fig. 1, being arranged in two sets one set 10 being located on the door frame 5 or oven side of the carrier and the other set 17 being positioned on the opposite or outer side of the carrier, it is arranged that at least one of the sets of tools, such as the set 10, is so mounted on the carrier as to be movable in the direction of the axis of the oven chamber; the door frame cleaning tools 10 may be pressed against the cleaning surface whilst the oven door is lifted and retracted; means may also be provided for traversing the cleaning tools along the sealing surfaces. The carrier 9, Fig. 3 is provided with wheels driven through a transmission unit 16 from a motor 15 in order to traverse the carrier across the front of the oven on rails 11; the carrier 9 has an upstanding structure 9' which includes the two sets of tools 10, 17 Fig. 1, which are shown in the operative position with the oven door 8 retracted. The cleaning unit 10 which comprises a vertical frame 46, Fig. 3, is movable across the carrier toward the mouth of the oven through gears 18 that are connected to runner wheels 53, the gears 18 engaging racks 19; the upper part of the cleaning unit 10 is provided with a similar mechanism. The movement of the cleaning unit 10 is effected by a motor 22, Fig. 1, and transmission gear 23 carried by the frame 46 through bevel gears 24, vertical shaft 25, Fig. 3, upper and lower bevel gears 26 to the gears 18, 20. The other cleaning unit 17 comprises a frame 28, Fig. 4, which is supported at its lower part by a universal joint so that the door may be cleaned no matter what position it assumed. Between the frame 28 and the door 8 is an endless chain 30 having guide rollers 31 engaging plates 32 for guiding the chain around the frame 28. All or some of the bolts 33, which are slidably located in bushes 60 of the chain 30 and loaded by springs 41, carry a scraping tool 34 whilst the latter may be provided with an enlarged portion 62 for cleaning the door cover frame 63. A guard 36, preferably covered with low-heat conductivity material such as asbestos, is fastened to the frame 28 and the end faces of the bushes 60 are guided by a flange 61 whilst the chain is driven by a sprocket 42, Fig. 1, from a motor 43 through a gear box and bevel gears 45 so that the chain is driven round the frame and carries with it the scrapers 34. The cleaning unit 10 with its scraping tools 62 and driving chain 48 is constructed and operates in a similar manner to unit 17. The pressure applied to the door 8 by its removing apparatus, not shown, is transmitted to the cleaning apparatus in order that the pressure on the cleaning tools will remain substantially constant. Either sets of tools may be independently movable or one set may be fixed and the other set movable.