Pneumatic mine barrier forming equipment - has flap and lever system controlling mix of water, additives and bulk material

摘要

Equipment for forming barriers in mine galleries, in which the bulk material, chemical additives and water is forced from a delivery tube into flexible containers. A mixing and blowing unit are combined with a screw conveyor (4) which passes through the discharge tube under a hopper (14) supplying the bulk material. At the end of this tube is a flap (5) controlling the flow of the bulk material into a duct (13) for delivery under pressure to the discharge point. This flap is connected by a lever system (6) with valves (15) controlling the discharge of chemical additives (47) from containers (9) connected to the duct. This system is also connected with the water injection valve further down the line, to ensure efficient and even wetting of the substances.