Eleven conveyors were installed at Durban Bulk Shipping establishing a new market place for aeroconveyors by revealing system suitability for the loading and discharge of ships in harbours (Fig. 4). Fig. 4: A ship loader incorporating aeroconveyors within its structure Further suitability for such an application arises from the ability to convey at high speed. Accelerated importation of maize resulting from the drought throughout the Afdcan continent was the issue two years ago and the air principle system proved to be highly efficient with the off-loading of this material and at a speed faster than other materials handling systems previously used. Capacity for the DBS conveyors is 500 t/h and a 750 mm wide conveyor belt was selected, running at a belt speed of 4.2 m/sec. Top conveyors were an easy addition, reducing dusting, providing weatherproofing and preventing spillage. Sight-glasses were also fitted in some of the conveyors to allow the operator to see the material should regulating or blending of A 70 m long, 1,200 mm vyide belt conveyor situated inside the gantry of South Afdca's newest ship loader at the time, was also commissioned. This conveyor, along with the loader, is hinged in the middle and can load vessels efficiently at a rate of 1,500 t/h and at a belt speed in excess of 4 m/see. The result is that the time needed to load vesseis is greatly reduced. At the time that these aeroconveyors were utilised, it was evident that they had formed one of the most vital links between the importation of maize and the drought-stricken continent of Africa. At present, bagasse, sugar cane and other sugar-related products, are by far the most important items on Aero-conveyors' agenda. The sugar projects began when the company was recently awarded contracts to supply cane-yard conveyors to a new Transvaal sugar factory in the Eastern The conveyors embrace the following: 1. The main cane conveyor which conveys the freshly cut cane up to the caneknives (the cut cane lies 2 m deep in the conveyor belt). 2. The cane-knives then cut the cane stalks into billets which are fed onto the shredder feed-conveyor which in turn conveys the billets to the shredding 3. Another conveyor is situated below the shredder conveyor which conveys the shredded cane into the diffuser. 4. Finally, the last aeroconveyor handles the diffused cane to the dewatering mill. These conveyors have a belt width of 2.1 m and are designed to handle cane at a rate of 225 t/h. Unlike the normal aeroconveyor which is troughed, these have a flat-belt The introduction of these wide conveyors heralds a first for South Africa, making them the widest air-supported conveyors Aeroconveyors have yet manufactured. Running concurrently with this project are several other conveyors being built for the sugar industry. These contracts came about after supplying 4 conveyors for a new depithing station. The conveyors handle bagasse pith at 40 t/h. The bagasse pith is a dry, stringy fibre resulting from the sugar making process and is primarily used for cattle feed. A feature of one of the conveyors situated within the roof trusses of the bagasse store is that it is reversible and can distribute material over the whole store The conveyors were installed within the existing plant arrangement and special emphasis was placed on erection without affecting continuous running of the plant. This criteria was successfully met by Aeroconveyors. The aeroconveyor, an intriguing, yet simple way of materials handling, finds a market place in most industries in South Africa. Having started slowly, yet surely and not without trepidation, it now appears as if the penny has dropped and finally the demand for its utilisation in many diverse industrial fields has stepped up | 
IP卡
狗仔卡
发表于 2008-5-27 11:17:36
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
显身卡
