| 摘要 |
471,973. Shaft furnaces. BRASSERT & CO., Ltd., H. A., and BRASSERT, H. A. Feb. 14, 1936, Nos. 4572/36 and 4471/37. [Class 51 (ii)] Walls, cooling.-The shell of a shaft furnace such as a blast or cupola furnace, is formed with a number of spaced, longitudinally-extending cooling ribs, each comprising a series of hollow elements to the interior of which water or other cooling medium is supplied. By this arrangement normal wear of the lining produces a vertical fluting, which does not obstruct the free descent of the charge. The elements c are of the U-form shown, and they are arranged one upon another as seen in the lower part of Fig. 3, or are spaced apart, according to the degree of cooling required. The limbs of the U are extended to form water connections c<8>, which are screw-threaded externally so that the elements can be secured to the metal casing d by nuts i. Angle plates h on the casing serve to position the elements and to tie those in the same vertical row together. All the elements in the same horizontal plane may be secured by the rods e. The casing d is supported by pairs of angle bars f, from which the plates g extend at intervals into the lining. Water may be supplied by gravity or under pressure, and in the latter case a series connection is described, Fig. 7 (not shown), from the first and second elements of each vertical row to the third and fourth of the next row and so on upwards and around the furnace. |
