Conveyors: power-driven – Conveyor having means specialized for collecting a load from... – Power-driven feed means
Patent
1997-12-04
2000-03-07
Valenza, Jospeh E.
Conveyors: power-driven
Conveyor having means specialized for collecting a load from...
Power-driven feed means
198511, 198518, 198703, 4141407, 4141425, 4141411, B65G 6522
Patent
active
060327863
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a filling arrangement for a bulk unloader having a conveyor belt travelling in an endless path and provided with material receiving pockets.
Unloaders of the kind referred to above are described for instance in SE 9201558-5, SE 9202034-6 and SE 9302695-3. In SE 9202034-6 is described a ship unloader comprising a vertically movable horizontal arm and a vertical arm, the latter being supported at the outer end of the horizontal arm for pendulum movements, said conveyor belt travelling in an endless path along the horizontal and vertical arms. The conveyor belt travels around a turning wheel disposed at a lower end of the vertical arm, and adjacent said turning wheel is arranged a screw conveyor receiving bulk material from the ship hull at its lower end and having a peripheral side opening at its upper end, formed in the screw housing, for transferring (of) the material to the conveyor belt pockets. This prior-art unloader, as well as the unloaders described in the other two documents referred to above, is characterised in that the open sides of the pockets are turned away from one another, i.e. the bulk material is loaded and unloaded on the outwardly facing side of the belt. For this reason the material-carrying transportation part of the belt must run above the return part in the horizontal arm, and consequently the return part pockets open downwards in the horizontal arm. A disadvantage inherent in this arrangement is that any remaining material that may be present in the incompletely emptied pockets in the belt return part will be shaken loose from said pockets as the latter are travelling along the horizontal arm, and thus fall down from the unloader. Considering the comparatively high capacity of such unloaders considerable quantities of the material may fall down from incompletely emptied pockets.
The subject invention has for its purpose to remedy this disadvantage found in the prior-art technology.
In accordance with the invention a filling arrangement for a bulk unloader thus is provided by means of which it becomes possible to turn the conveyor belt pockets towards each other and yet achieve efficient filling of the material into the belt pockets. Thus, it becomes possible to arrange for the transportation part of the belt to travel below the return part inside the horizontal arm, with the result that the return part pocket will open downwards, towards the upwardly open pockets of the transportation part. The advantage of this arrangement is that any material that may fall out of any incompletely emptied pockets in the return part will be guided into the pockets below in the transportation part and be carried by said part to the intended belt discharge station.
In this manner, undesired emptying of material from the unloader is avoided.
More precisely, the subject invention provides an arrangement whereby it becomes possible to fill inwardly-facing pockets of the kind indicated, in a safe and efficient manner.
The arrangement in accordance with the invention is characterised in that it comprises a filler wheel having an essentially horizontal main axis and arranged to be used specifically but not exclusively as a turning wheel at the lower end of a vertical arm in an unloader of the kind defined above. However, the filler wheel is generally useful also in other applications than in connection with the type of ship unloader described above.
In accordance with the invention, the filler wheel comprises two runners, which are rotatable about the main axis and against which belt edge portions of the conveyor belt abut, said pockets travelling between the runners with the pockets opening towards the interior of the filler wheel for receiving material supplied essentially axially via an inlet opening through a first one of said runners. In order to prevent the material supplied into the inlet opening from causing undesired clogging of the filler wheel and/or build-up of layers of material therein, and also to ensure that the material supplied is safely transferred into t
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BMH Marine AB
Valenza Jospeh E.
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