A fire may have several causes. The materials and build-ups in a dryer can quickly be ignited by overheating, friction or machine break. Sparks or glowing embers from upstream production areas can end up in the dryer via the material feed point and act as the source of a re there. Operators therefore need a solution which detects res quickly and ghts them speci cally on the dryer and related extraction devices. In addition, a protection concept which allows for coordinated re protection for interlinking production areas would be desirable. Minimax has the right solution: DryerProtect.
Advantages at a glance
DryerProtect combines re detection, water mist and spark extinguishing technology
to form a holistic solution. This combination provides re protection which is tailored individually to the requirements of the various protection zones.
Fire detection is carried out with the aid of the Minifog ProCon fine spray extinguishing system, which is divided into one or more extinguishing areas with corresponding area subdivision, water supply and fire detection and extinguishing control technology. The dryers are now extinguished by Minifog ProCon fine spray extinguishing systems, which operate on a low-pressure basis and spray the extinguishing water particularly finely over the defined protected area.
Sparks or glowing embers in the exhaust- and conveyor systems of a dryer must be detected and extinguished quickly. Spark extinguishing systems are the suitable choice for these requirements. Detection is provided by spark detectors of the FUX3001 series. These detectors have a detection spectrum that is tailored specically for the detection of sparks or hot parts.If an FUX3001 spark detector detects sparks or glowing embers, the spark detector will activate a high-speed solenoid valve within milliseconds via the re detection control panel and will re- lease extinguishing water through the at spray nozzles.
The FMZ 5000 re detection and extinguishing control panel is responsible for controlling the re event. If ame detectors of the Minifog ProCon water mist system or spark detectors of the spark extinguishing system detect a re, they transmit a signal to the re detection control panel. It activates the affected extinguishing zone and triggers the extinguishing action and simultaneously releases an acoustic and optical alarm. In addition, potential-free contacts are available at the re detection and extinguishing control panel to switch off the machine controls in the event of a fault or fire.