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摘要

A method is provided for feeding in and transporting material in a pneumatic conveying system for material, which conveying system includes at least one input point of material, a material conveying pipe, which can be connected to the input point, and a material container, in which the material being transported is separated from the transporting air, and also a device configured to product a partial vacuum/a pressure difference and/or a transporting air current in the conveying pipe at least during the transporting of the material, which device includes at least one partial-vacuum source. In the method, the suction side of the partial-vacuum source is connected to act in the conveying pipe and onwards to an input point arranged in the conveying pipe, or to act at least in the feeder channel that is between the conveying pipe and the input point, in which case the input point, or at least the feeder channel, intended for emptying that is closest to the material container in the conveying direction of the material empties and the material displaces into the conveying pipe, that arranged in the input point, on the inside of said input point and on the opposite side of the input aperture with respect to the feeder channel, is a shut-off element, which is moved by means of the suction produced by the partial-vacuum source from a first position, in which the shut-off element does not make the pathway through the input aperture into the feeder channel essentially smaller, into a second position, in which the shut-off element does make the pathway through the input aperture into the feeder channel essentially smaller, when the pressure on the first side, on the feeder channel side, of the shut-off element is smaller than on the second side, on the opposite side with respect to the feeder channel, of the shut-off element. An input point and to a pneumatic material-conveying system are also disclosed.