The present invention proposes a relief module comprising a tubular body (10) for the passage of bulk material, at least a lateral opening (12) in the tubular body (10), a window (20) to cover the respective lateral opening (12), the window (20) operating in a closed position preventing the bulk material from exiting through the lateral opening (12) or in an open position allowing the material to exit through the lateral opening (12), the window (20) having at least one portion made of filtering material allowing the air to pass through and retain solid particles, when the window (20) is in the closed position. The present invention also proposes a bulk material discharge device which receives the bulk material from a feeding system and discharges the bulk material to a destination, the discharge device comprising a relief module configured according to the invention.