MACHINERY | BULK MATERIALS HANDLING
Right: The net5 system material conveying system from Wittmann
conveying line in the Pneumati- Con pneumatic system delivers up to 1,000 kg/h of material to a filter-receiver and receiving hopper located above the extruder. The mineral powder is separated from the air stream by a filter-receiver that includes a 220 litre capacity receiving hopper. Four air-jet fluidisers in the bottom of the hopper assist the flow of material and a volumetric feeder meters it into the extruder. System operation is under PLC control, including timed filter cleaning, starting and stopping the pneumatic conveyor based on level sensor readings, and opening and closing of valves. The Spanish customer says that the bulk bag
discharger and pneumatic conveying system have reduced the manual handling that its workers have to do and have helped clean up the plant. It reports that the equipment has improved efficiency, as when the hopper above the extruder runs low, the controller alerts the operators, who then load another bulk bag, thereby reducing downtime.
Below: KruiseKontrol is an automatic system from Moretto for control and management of velocity in plastics conveying
Granular conveying Italian materials handling firm Moretto has developed its KruiseKontrol system for automatic control and management of plastic granule conveying velocity. The company says KruiseKon- trol is designed to constantly optimise the system, transporting granules at the appropriate speed without the creation of angel hair and dust, as well as avoiding pipe wear and increasing productivity. The system is claimed to maintain the correct material velocity for different polymers and is said
to better manage the problematic initial and final conveying phases. Management of the system is via Moretto’s touch view control, which requires the user only to select the material type and the machine to be fed. KruiseKontrol is then sent the appropriate input data relating to the material and its correct velocity. The system is fully automatic and dynamic, managing parameters such as vacuum level and air flow as required. Meanwhile,
Wittmann says it has developed its net5 system material conveying system for maximum flexibility in use and application (it can
be used, for instance, to control a single difficult-to- reach material loader or a mid-sized conveying system of up to 24 loaders). In addition, the net5 system can control the material conveying system through one of the company’s Aton Plus series dryers. Up to four touch-screen controls can be used in this way and, when a system consists of three Teachbox Basic controls and a dryer, each console can be used to imput commands. Adminis- tration of the system can also be executed via any of the four control displays. Wittmann says a further advantage of the
Teachbox Basic is in the ability to position it anywhere within the net5 system. For example, it is possible to connect one control unit to the system at the beginning of a conveying line and a second one somewhere in the middle of the system. This means the operator is free to arrange short distances for material handling in the system, or to reserve a particular control unit for a particularly critical component. The concept of the control unit allows for
unrestricted flexibility, even when the system is fully engaged. For example, the Teachbox Basic can be connected to a central pump and then later to any conveying unit. All the settings that define the suction process and the conveying times (and the 2-component valve settings) are stored directly in the conveying unit.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.bulk-solids.k-state.edu (Kansas State University) �
www.coperion.com �
http://penta.piovan.com �
www.brabender-technologie.com �
www.flexicon.com �
www.moretto.com �
www.wittmann-group.com
40 COMPOUNDING WORLD | February 2018
www.compoundingworld.com
PHOTO: MORETTO
PHOTO: WITTMANN GROUP
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