MACHINERY | MATERIALS HANDLING
stainless steel surfaces ensure reliable, and dust- and contamination-free operation. A highlight is the revised membrane implo- sion vacuum valve, which does not require compressed air and can operate inside strict cleanroom environments.
An optional dedusting unit ensures high
Above: Moretto’s OTX dehumidifica- tion hopper is compact in size, says the company
material quality of the plastics to be processed. The dust removed from the material is sucked to the central filter with a filtered air flow and separated there. An implosion vacuum valve with HEPA H13 filter is installed as standard. After each convey- ing operation, an implosion cleans the stainless-steel material sieve. While the standard implosion vacuum valve opens and closes pneumatically for this purpose, the optional membrane implosion vacuum valve uses the vacuum generated for the valve operation. This is an optimum prerequisite for installation in clean rooms. High-quality seals ensure a dust-free environment for all variants. The company also offers a variant mounted
directly on the feed throat of the processing machine. This machine loader – without an outlet flap – does not require a separate material hopper, operates with a low material supply, and so reduces residence time – making it appropriate for conveying hygroscopic materials and where space is at a premium.
Thermal exchange Moretto says that its OTX dehumidification hopper – developed using sophisticated mathematical simulations – ensures a regular flow of material, guaranteeing the correct drying of each individual granule being treated. In addition, optimisation of process parameters has made it possible to reduce hopper size, technological airflow and treatment time by 40% for the same hourly throughput.
The reduction in hopper size was made possible by the energy efficiency of OTX, which has been improved by 66% at the same production capacity. Because OTX is not a simple hopper – but a combination of seven patents – it ensures high drying performance, says Moretto. The use of a smaller hopper also allows the use of a smaller dryer, it adds. In addition, through its Hyper Flow turbocom-
pressor, it can help to raise energy efficiency. A 1,200 mc/h generator with side channel pumps in continuous operation consumes 16.5 kW/h, while a Hyper Flow – for the same performance – con- sumes 4.8 kW/h, it says, to deliver energy savings of more than 11 kW/h and annual cost savings above €35,000.
Joint technology Kubota Brabender Technologie introduced its first joint product development – the enhanced NX Series feeder – at last year’s Powtech show in Germany. The company was formed when Kubota of Japan bought Brabender Technologie of Germany. The NX Series feeder handles poor-flowing,
sticky powders as well as fibres and pellets. The feeder features a special negative angle wall hopper geometry and a diagonal agitator that prevents bridging and ensures optimal bulk material flow into the screw. In combination with other components, mass flow is optimised and a uniform screw fill level is achieved. The company showcased other products at
Powtech, including Flexwall 40 – which provides live insights into its operation thanks to a transpar- ent hopper.
“Our ambition is to harness the synergies of both companies and jointly develop high-quality products for the global market,” said Bruno Dautzenberg, managing director of Kubota Brabender Technologie.
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IMAGE: MORETTO
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