The Mechanical Handling and Storing of Material
Forfatter: A.-M.Inst.C E., George Frederick Zimmer
År: 1916
Forlag: Crosby Lockwood and Son
Sted: London
Sider: 752
UDK: 621.87 Zim, 621.86 Zim
Being a Treatise on the Handling and Storing of Material such as Grain, Coal, Ore, Timber, Etc., by Automatic or Semi-Automatic Machinery, together with the Various Accessories used in the Manipulation of such Plant
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THE HANDLING OF HOT COKE IN GASWORKS
front part of the succeeding plate,
147
of a water-tight trough, through which pass closely-fitting tray plates attached to a single
chain. These plates are 1 ft. 6 in. to 2 ft. in width, and 13| in. in length ; they are
joggled downwards at one end to receive the flat
in order to prevent the “ breeze ” from penetrating
beneath the carrying plate. The chain now used
is constructed entirely of steel, having steel bushes
secured to the inner links and steel pins to the
outer links. Small rollers are attached by means
of angle-brackets to the under side of the conveyor
plate, to carry the plates and chain, and, as they
run in water, oiling is dispensed with. The chain
has a breaking strength of 29 tons. The brackets
which carry the rollers are made of manganese
steel, either as shown in Fig. 199, or in one piece
with the spindle or pin. The rollers are in.
in diameter, and are also of manganese steel. The
framework which carries the whole conveyor is
built of angle-bars. To prevent side play of the
return strand, rubbing strips are fitted above the
lower angle bars of the conveyor. The speed of
travel of these conveyors is about 45 ft. per minute,
and the capacity when handling coke from 20-ft.
retorts is about 30 tons per hour.
Graham, Morton & Co.’s Hot Coke
Conveyor.—This conveyor consists of a> travelling
tray, the sections of which are joined together
by steel spindles provided with a roller at either
end running on suitable rails. The sections them-
selves practically form the links of a wide chain
upon which the coke is carried. They consist
of steel castings containing a number of lateral
slots, so that they present the appearance of a
grating. It is obvious that these links must suffer
less from the action of the hot coke than would
a plate, but on the other hand there is the difficulty
of catching and removing the water and dust which
escape through
the grating;
this is effected
by means of a
trough beneath
the grating, and
a scraper.
Marshall’s
Hot Coke
Conveyor. This conveyor was designed by Mr F. D. Marshall, of the Copenhagen
Gasworks. It consists of a water-tight wrought-iron trough, fitted on either side
with a series of guide rollers, upon which the two conveyor chains run. Both guide
wheels and chains are amply protected by sheet-iron coverings. The chains consist