GB867761A - Improvements in and relating to the cleaning of coke oven doors - Google Patents

Abstract

867,761. Cleaning coke oven doors. SIMONCARVES Ltd. Feb. 29, 1960 [May 6, 1959], No. 6975/60. Class 99(2). Means for mechnically cleaning condensation deposits from coke oven doors comprises a rectangular frame 20a, Fig. 1, formed from a hollow member adapted to be brought into encircling relationship with the inner surface of a coke oven door, a carriage in the hollow member, means within the hollow member for moving the carriage in a closed doorencircling circuit therewithin, means on the carriage projecting from the hollow member on the inner periphery of the rectangular frame, scraper means resiliently attached to the projecting means externally of the hollow member and means to move the carriage in the closed circuit. The scraper means comprises a scraper portion 51 adapted to lie parallel with the plane of the door 10, Fig. 3, when the door is encircled by the frame and is adapted to move into scraping engagement with the sealing edge 12 of the sealing strip 11 on the door upon engagement of the scraper portion with a condensation deposit on the sealing edge when the door and frame are brought into encircling relationship and upon activation of the means to move the carriage in the closed circuit. The frame 20a is supported by pins 19 in eyes 18 formed at the lower ends of spaced vertical arms 18a depending from a supporting structure 17, and is provided with a bifurcated lug 26, Fig. 3, forming two spaced members 27 between which a lug 25 on the door fits. Cam surfaces 28, 29 hold the frame into exact co-operation with the door. The scraper 51 is arranged on a carriage consisting of a base plate 30 from which extend two spaced webs 31 on which are rotatably mounted two flanged wheels 32, Fig. 6, running on continuous rails 34, 35. The carriage is connected to two roller chains 36 and 37 by a bolt 42, a connecting rod 43 and rod 44 which is secured at each end to a coupling link 45 inserted in each chain. The scraper 51 is secured to a spindle 46 axially slidable and rotatable in a boss 47. A spring 48 is provided to project spindle 46 from the boss 47 until cap 49 engages the boss and also to provide a torque tending to turn the spindle so that scraper 51 lies at 90 degrees to the surface 12. When the carriage is moved, by the chains 36 and 37 driven by a motor 41, Fig. 1, through driving sprocket 39 connected to sprocket 38 over which the chain passes, the scraper 51 moves so that the knife edge 53, Fig. 3, comes into scraping engagement with the inner surface of the strip 11. A second similar carriage, connected to the two chains' 36 and 37, may be provided, on which a scraper blade is resiliently and pivotally associated with the projecting means of the second carriage and adapted to be brought into scraping engagement with a plug portion 13 of the oven door. The chains may carry two or four pairs of carriages as above.