Efaflex High-Speed Spiral Doors for Mine Site by DMF International

DMF has recently completed a project for blue chip company BHP, at one of their large mine sites in South Australia, supplying and overseeing 8 units of Efaflex high-speed spiral doors. After much design consideration, the model selected was the Efaflex STR, complete with a 900gsm flexible PVC panel, strengthened by closely spaced wind bars, and allowing operating speeds of over 1.5m/sec with door blade tracking around the spiral design.

This door model has a high wind capacity at over 100km/h, remaining fully operational under this wind pressure. With door sizes of 6 metres in height, and up to 7m in width meaning a large sail area, these doors perform very well.

The doors are complete with a unique Efatronic control system, being a simplified design with fully programmable features, allowing a single phase power source with VSD control, providing soft start / stop operation of the door. This feature removes considerable loading of the door operation, especially when working at such high speeds.

The doors required a high level of safety and are complete with a light curtain fitted into the door columns, which ensures the doors do not close with any traffic type within the opening. In addition, laser-wide scan sensors are incorporated for activation and safety, which have the ability to determine cross traffic, safety zoning and virtual pullcord functions, all programmable by an app and Bluetooth.

Efaflex High-Speed Spiral Doors for Mining Sites.

DMF worked closely with the design team, head contractor, and BHP to deliver a product suited to the harsh conditions. These high-speed doors are recognised globally as a premium product, manufactured in Germany by Efaflex Gmbh, under specification by DMF. The doors were installed by the head contractor, with the oversight of DMF engineering to final commissioning.

This is now the third mine site operated by BHP that DMF has supplied the Efaflex high-speed doors to. DMF has enjoyed success on many projects around Australia, installing and maintaining the Efaflex doors, and DMF-manufactured high-speed doors.

For more information, contact DMF via www.dmf.com.au.