Products & applications Materials handling & conveying
Crane installation improves handling at biomass cogeneration facility The biomass cogeneration facility burns woodchip by-
Demag Cranes has installed an automatic materials han- dling system at a wood fired cogeneration power station in Hamburg, Germany.
products from local forestry and landscaping activities, generating heat and electricity, whilst reducing the deple- tion of fossil fuel resources. The Hamburg power station processes 32,000t of woodchip annually, generating over 13,000MWh of electricity per year and some 60,000MWh of heat, which warms 8,000 households in the district. To meet the specific materials handling requirements of the Hamburg operation, Demag Cranes installed a 16.4m span, 11t SWL, automatic double girder overhead travel- ling crane, mounted with a specially developed 8m3 multi-jaw grab. The process crane features frequency reg- ulated speeds in three directions for optimum travel and lifting characteristics. Controlled by warehouse manage- ment software, the system is designed for high volume handling. Long travel speeds of up to 50m/min, cross travel of up to 40m/min and hoisting rates of up to 50m/min facilitate the movement of 140m3 of woodchip per hour. A load sway damping system provides smooth lifting and movement, avoiding the possibility of damage
caused by collision of the grab and the pit walls. Raw biomass is delivered to the plant by trucks and deposited in a 300m3 tipping pit, where it is automatical- ly monitored for moisture content and fuel grade. Once the vehicle has cleared the tipping area, the crane system moves the woodchip to three pre-determined zones, with- in the 900m3 intermediate bunker, according to fuel grade. The system is programmed to maintain a fixed fill level within the silo, which feeds the furnace. When fixed sensors indicate that the minimum fill level is reached, the crane system automatically transports biomass mate- rial from the storage bunker to replenish the silo. The Demag automatic crane system offers a number of advantages over alternative materials handling systems, such as wheel loaders. Increased productivity, lower noise emissions, less manpower and reduced operating costs are amongst the benefits. Demag Cranes & Components T: 01295 676177
www.demagcranes.com
Enter 358
Bag compactor offers safer operational performance Flexicon Europe has developed a Bag Compactor as an integral part of its
range of Bad Dump Stations, enabling operators to easily and safely dis- card and compress up to 80 used bags into a compact neat bundle for subsequent disposal.
The Flexicon Bag Dump Station is said to provide a simple and effec- tive method of manually introducing bagged materials for hopper replenishment or direct feed into a processing line via flexible screw or pneumatic conveyors. As each bag is split and manually emptied into the bag dump station high velocity vacuum fans automatically draw dust
away from the operator onto two cartridge filters, protecting workers and preventing plant contamination. The Bag Compactor brings added safety and improvements to the work area as emptied bags can now be contained within the confines of the machine rather than being discarded into adjacent wire cages. Since the compactor becomes an integral part of the bag dump station any residual dust is also contained within the machine structure preventing escape during the compaction process.
The Bag Compactor can be mounted to either the left or right of the bag dump station and is accessed via a small horizontal letterbox-style flapper in the side panel of the dump station. A pneumatically powered ram compresses the used bags and depending on size and thickness, it is estimated that between 50 and 80 bags can be compacted into a removable polybag lined bin. A full indicator light signals time to remove the bin from the Flexicon Bag Compactor, tie the polybag ready for collection, reline and replace the bin, the final bale size is no larger than 440x440x600mm high. Flexicon (Europe)
T: 01227 374710
www.flexicon.co.uk Enter 359 Polyurethane timing belt is now FDA approved
Habasit Rossi has extended its high performance range of HabaSYNC timing belts for food production and packaging applications to include a new blue Thermoplastic Polyurethane (TPU) belting solution which is specifically designed for use in wet envi- ronments, where humidity, wash down and oily conditions can be found.
FDA approved, the HabaSYNC Blue 90 Shore A Polyether TPU timing belt is reinforced with aramide cords to ensure consistent and exact posi- tioning, and is available in T5 and T10 pitches. The HabaSYNC range of timing belts have been specifi- cally designed for applications where precise product posi- tioning, indexing or synchronisation are
S10
vital. Belts can be made to exact dimensional needs and can be supplied complete with guides, profiles and covers to suit every application including accu- mulation and indexing, to ensure a customer’s prod- uct or component is always in the right place at the right time.
This range of belts is suitable for tray handling and filling, slicing and portioning, pick ‘n’ place systems, packaging and palletising lines. The whole range fea- tures precisely formed teeth with accurate tolerance, which together with the robust steel and aramide cords, ensures consistent and exact positioning. Available in both imperial and metric pitches, the range is designed to deliver many years of high perfor- mance. It is made from thermoplastic polyurethane and manufactured in open lengths, which can be slit to width and cut to length to make exact size belts. Habasit Rossi
www.habasitrossi.co.uk
T: 0844 835 9555 Enter 361
SEPTEMBER 2011 Materials Handling & Logistics Heavy duty welded
conveyor chain A range of heavy duty conveyor chain specially designed for harsh environ- ments is now available in the UK from Letchworth-based FB Chain. Made in Finland, where it has been used to power conveyors working in the demanding timber industry, the chain’s pins and bushes are welded to the side plate - unlike a standard chain where the pins and bushes are usually simply riveted in place. According to FB Chain, the welded construction method results in a chain with a breaking load some 30 per cent higher than the riveted alternative. FB Chain claims this construction offers greater resistance to shock loading and improved fatigue strength. The chain is especially recommended for the quar- rying, construction and recycling industries.
Although perhaps best known for the leaf chain that it supplies to the materi- als handling sector, FB Chain offers an extensive range of heavy duty chain and transmission products that are used across a wide variety of industries. FB Chain T: 01462 670844 Enter 360
www.conveyorchain.co.uk
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