Powering Ventilation, Driving Progress — Achieve Your Mining Goals with MiningFan.
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A press-in local fan is an auxiliary ventilator that supplies fresh intake air under positive pressure to specific underground workplaces—such as working faces, headings, workshops, and stations—via a ducted distribution system. The aim is to ensure target airflow at the point of need despite resistance from duct length, bends, and fittings, thereby achieving methane dilution, dust suppression, improved visibility, and better thermal comfort.
Local fans are typically axial for compactness and efficiency; where additional head is required, contra-rotating stages can be applied. Explosion-proof (Ex) construction, anti-static ducting, and compliant controls are specified in gassy mines. Variable-frequency drives (VFDs) provide flexible performance control as the system curve changes with advance or rearrangement of the duct line.
Effective installations use smooth inlets, sealed joints, and correctly proportioned face diffusers or nozzles. Selection is based on a realistic estimate of total pressure—including allowances for leakage and fittings—and the fan’s ability to meet the duty near peak efficiency. Commissioning confirms the delivered quantity and static pressure at the face and checks noise and vibration against limits. Preventive maintenance—blade inspection, bearing lubrication, and fastener checks—extends service life and preserves energy performance.
