Pneumatic conveying device for dam-building materials

摘要

A pneumatic conveying device is continuously driven in that a pipe screw which is arranged in a pressure tube is arranged additionally between the pressure container having a metering screw and the bin and is designed to be closable by means of blocking elements positioned in the inlet and outlet. The metering screw charges directly into the conveying line and is controlled as a function of the load. The pressure container has a usable capacity which is increased with respect to the pressure tube, the metering screw intentionally being so designed that it has a higher conveying capacity in the region of charging than at the rear end in the region of discharging. By this means, a buffering effect is assigned to the pressure container, which makes possible the metered and uniform charging. The two pressure containers connected one behind the other ensure the continuous charging of the dam-building material. <IMAGE>