| 摘要 |
In underground mining, in particular in coal mining, the dam construction material required for making dams is transported hydraulically. Required for this purpose is a silo with a mixer, which is necessary for moistening the dam construction material, and normally a transport line which can be loaded via a spindle drag pump or a double piston pump. On account of the sealing problems occurring in pumps, hydraulic delivery of this type is limited in delivery volume and length of delivery line. For the problem-free transport over large distances in a cost-effective and operationally reliable manner, the invention provides for a three-chamber pipe feeder to be arranged as a pressure intensifier in the delivery line (4), which three-chamber pipe feeder is connected via a flow and return line (6, 8) to a water reservoir (7), the flow line (6) being fed from the water reservoir (7) via a high-pressure pump (9). <IMAGE>
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