Improved spray fans provide ventilation solutions

The Sprayfan System is an auxiliary ventilation system. It consists of several spray manifolds strategically placed on continuous miners to effectively ventilate the immediate face area. A series of water sprays redirect the main ventilation flow to the face and sweep contaminated air (methane and dust) across the face toward the return. This improved system provides increased sweeping power across the face with a new front spray bar configuration and concentrated side power for effective face ventilation. Additional water sprays have been incorporated into the design for improved dust suppression. As with the original system, a dual-sided system is required on sections with ventilation returns on either side. To ensure proper operation, the Improved Sprayfan System requires a minimum operating pressure of 80 psi (measured at the nozzle) for most applications. Different pressure levels may be necessary to balance system power with the primary air-flow.