| 摘要 |
1,128,604. Mounting arc furnace electrodes. KNAPSACK A.G. 14 Dec., 1965 [15 Dec., 1964], No. 53034/65. Heading H5H. Apparatus for rotating and feeding a consumable arc electrode 40 comprises a rotating member 27 carrying electrode feeding means 23a, (23) Fig. 2 (not shown), first and second prime movers 8, 1, a common differential gear unit 2 ... 10, and first and second transmissions to rotate and drive the electrode, the first prime mover driving one transmission directly and tho other indirectly through the gear unit and the second prime mover driving the other transmission. An inclined carbon electrode extending through a furnace head 41 in a gas-tight manner is frictionally held by a pair of feed rolls 23a, (23) mounted with worm-wheels (22), 22a on shafts 49, (49a). The shafts are carried on frames 24, 25 mounted on the upper part of member 27 rotating on roller bearings 17, 18 about a stationary member 28 attached to a contact holder 30 in a support 39 inserted in a receptacle in the furnace head. To rotate the electrode, member 27 is turned by a worm and ring assembly 47, 15. To feed the electrode, a second worm 48 turns the rolls 23a (23) via a combined worm ring 16 and toothed ring 16a, rotatably mounted on member 27, gear 20 and worm 21 which engages wheels (22), 22a. The worms 47, 48 are driven by variable speed electric motors 1, 8 through a differential gear unit 2 ... 10 and articulated shafts 11, 12. When the electrode is rotated by the motor 8 both worms are driven through the gear-box to prevent feeding of the electrode. Current is supplied to the electrode via the holder 30 having at its lower end tongues (55), Fig. 5 (not shown) pressed against the electrode by pretensioned springs. Pure or hydrocarbon containing H 2 flows through a bore 33, around the electrode into the furnace for the production of acetylene and ethylene. Several electrodes can be mounted in the furnace head and supplied with A.C. or D.C. |
