| 摘要 |
1,162,601. Discharging rotary kilns; cooling cement clinker. F. L. SMIDTH & CO. A.S. 21 Feb., 1968 [22 March, 1967; 11 Dec., 1967], Nos. 13531/67 and 56261/67. Heading F4B. The planetary cooling tubes of a rotary cement kiln (Fig. 1, not shown) are formed from a plurality of sections 8, 9 connected together by a spigot and socket joint 25, 26 which is provided with an annular seal permitting relative axial or radial movement of the tube sections on expansion. The seal is formed from ring members 29, 31 secured to tube section 8, and a ring member 33 attached to ring member 31 by resiliently mounted bolts 34 extending through radial slots in the latter. A sealing ring 37 secured to ring member 33 abuts tube section 9. The ring members 29, 31 and 33 may be assembled from four quadrants. A trough 38 and conduits 39, 41, 42 are provided to allow any dust escaping between spigot 25 and socket 26 into chamber 32, to pass back into the cooling tube interior as it rotates. In a modification (Fig. 3, not shown) the seal is formed by an annular sealing member provided with copper asbestos sealing rings abutting against the cooling tube sections. A similar seal may connect the cooling tube to the kiln discharge tube. The cooling tubes are supported from the kiln at spaced intervals along their length by alternate clamps (Fig. 2, not shown) and means allowing longitudinal expansion of the tube sections.
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