Pneumatic pipe conveyor installation for fibres

摘要

Known pneumatic pipe conveyor installations for fibres, particularly for textile fibre strands, comprise a conveyor pipe and a selectively operable feeder apparatus for feeding the fibres to the inlet opening of the conveyor pipe. For permitting the feeder apparatus to be automatically stopped in response to the formation of a fibre congestion adjacent the inlet opening of the conveyor pipe, there is provided a pressure-receiving surface (6) at least partially surrounding the inlet opening (5) of the conveyor pipe (2) and operatively connected to a switch (7) adapted to generate a stop signal for stopping operation of the feeder apparatus (3) in response to the pressure acting on the pressure-receiving surface (6) exceeding a predetermined value. The pneumatic pipe conveyor installation is useful for conveying fibre strands or slubbings in the textile industry.