Functional Description (refer to figures below)
The Sicon comprises and endless, rubberized 'pear-shaped' conveyor belt which is supported on a series of idlers and which is driven by one or more drive pulleys.
The conveyor belt is folded to enclose the product and a significant feature of this conveyor is the ability to accommodate multiple loading and discharge stations.
With exceptions, Sicon conveyors are used to convey difficult or dusty or precious products within factories and Plants where spillage, pollution or security of the material is important.
Sicons are not usually used as overland conveyors however, where a number of troughed conveyors would be needed to convey materials through a process building, the Sicon would need only one conveyor !
A typical Sicon conveyor incorporates at least one loading station (1) where material is fed onto the open belt at a regulated or controlled rate. The belt is then closed once the material has been given time to settle. From the loading point the belt is then routed around bend stations (2) and drive station pulleys (3) until the discharge point (4) is reached.
At the discharge the material is guided past the closing belt (5) by the discharge chute (6). It may be a requirement to offer a re-loading point here as well, in which case the chute would incorporate a flopper gate to enable material to be routed either off of the Sicon, or back onto the return strand.
From the discharge station the belt is closed and passes around a 180 degree pulley (7) to commence its return path to the loading station. The return belt however does not necessarily have to return to the tail along the same route.
To maintain the required belt tension, the tail pulley (8) is conveniently mounted onto a moving trolley assembly which is connected to a gravity take-up mass and thus this 180 degree turning station is also referred to as the take-up station.
Both the carrying belt (9) and the return belt (10) are closed at all times and therefore material cannot 'spill' out of the belt, thereby providing dust free and spillage free service.
The belt is supported along the conveying and return strands by means of special idler sets mounted onto brackets (11) - see adjacent diagram.
The overlapping belt profiles (12) are kept tightly closed by means of the vertical guide roller (13) while the weight of the belt and material (14) is carried by the angled support rollers (15).
The steel cords (16) which are vulcanised into the two profiles (12) provide the necessary tensile strength in the belt and thus no tension is transmitted into the reinforced backing strips (17) or the bag (18).
As can be seen from the diagram, when the belt is 'closed', one steel cable is located vertically above the other, which means that when the belt turns through a corner, the cables have the same radius which is the fundamental reason why the belt can negotiate radii of less than 1m.
Once loaded, the material (14) is surrounded by the elastic rubber bag (18) and is carried gently to the discharge point.