A destructive fire left Taranaki Sawmills with severe building damage and a planer beyond repair. Egmont Air, New Zealand specialists in dust extraction, completed a full in-depth evaluation of the company’s requirements and specified a super-performance dust extraction system to suit the requirements of the replacement planer.
Taranaki Sawmills recently installed a new Egmont Air high-performance dust extraction system to extract wood shavings from its new high-speed planer. Capable of machining heavy profiles at 100m/m, the new 9-head planer required high suction power to extract the large volume of shavings. Egmont Air’s high-efficiency fan series was used in conjunction with a variable speed drive to provide ultimate control and maximum suction levels, while saving power.
Egmont Air’s modular filter units feature a massive decantation chamber and high filter surface area to effectively separate the dust load from the airstream and guarantee clean air discharge.
Filter resistance of less than 150Pa can be achieved which significantly reduces back pressure on the fan and maximizes suction at the planer. Further to this, an automated reverse air cleaning system maintains the filter sleeves in optimum working condition and reduces maintenance to a minimum.
The larger challenge lay with the transfer of wood shavings 300m across the site to the silos in preparation for feeding the kiln boilers. Egmont Air specified a new 3-lobe ‘Roots Blower’ that develops high-pressure to transport 8,500kg of shavings per hour through a 200mm diameter blow line across the site.
Extra-heavy gauge ducting and long-radius bends were also specified to maintain integrity against factors of the shaving load, abrasive wear and the high pressure involved. Two large blow-through rotary valves were positioned on the Egmont Air modular filter to discharge the shavings into the blow line.
A pneumatic diverter system allows the shavings to be directed to either the kiln silos or a bulk-truck silo. Quick couplings also allow connection of 20ft containers to the system if separation of shavings from special treated timbers is required.
Egmont Air – recommended its spark detection system to monitor the new extraction system. The spark detection system provides full detection and extinguishing of any dangerously heated or smouldering particles.
Egmont Air always uses dual high-sensitivity sensors placed opposing each other on the duct line. These high-sensitivity sensors scan the full width of the duct without obstructing the airflow and have a unique self-testing feature that provides true through-the-lens results to guarantee the system will perform when required. Heat sensors and filter deluge are also coupled to the spark detection system to provide complete safety and assurance.
Egmont Air offers a huge range of fan and filter sizes for woodworking applications and provides solutions for many timber processors, kitchen makers and joinery shops who previously considered filter units as an expensive option.
Egmont Air offers a free consultation and professional advice for any dust or fume extraction issue.
For more information:
Phone: 0800 781 200
or 06 278 1200
Photo: Egmont Air’s filter units effectively separate the dust load from the air stream and guarantee clean air discharge.