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The conveying device has a conveying pipe which comprises a tubular inlet flange (1) at the upper end and a pipe outlet flange (3) at the lower end. The pipe outlet flange is provided with rotationally symmetric receiving collars (11). The quick-clamping elements (5) are provided as pipe supports and are hooked with flanges with the rotationally symmetric receiving collars so as to ensure fast and tight connection of the flanges to each other.