Patent GB-853489-A (GB)
Title: Improvements in or relating to a machine for treating rope-or ribbon-like materials and more particularly textile materials
IPC: G01N33/487
Filed: 1957-01-24
Abstract: Apparatus for dyeing, bleaching, washing &c. ribbon- or rope-like material, comprises a closed pressure container containing a treating fluid through which the material to be treated is to be guided, at least one guiding conduit for guiding the material into and or out of the pressure container, a flow of sealing fluid in the conduit or conduits being provided during operation of the machine, the guiding conduit forming or including throttling means which serves to increase the flow resistance of the sealing fluid in the <PICT:0853489/IV (c)/1> <PICT:0853489/IV (c)/2> <PICT:0853489/IV (c)/3> conduit and build up pressure in the container.  I Fig. 1 the material is passed into an open bath collecting container 7, the liquid of which acts as a sealing fluid, through a guide conduit 5 into the treatment tank 1, and then out via conduit 6 and the container 7.  A pump 12 maintains a circulating and sealing flow of liquid in the conduits 5, 6, and raises the pressure in the tank 1. The temperature of the treatment liquid in the tank may be raised by a heater 13 to normal boiling point without working the pump 12, and then a further temperature rise may be provided by the heater when the pump is started to raise the pressure.  In Fig. 2 the guiding conduits are continued into the tank 1, and in co-operation with walls 20, 21 provide liquid seals 17, 18 defining a vapour pressure treatment chamber 19.  If different liquids are used in the respective seals then separate containers 7 are provided.  In another embodiment employing vapour treatment the inlet and outlet conduits are provided with sealing labyrinths and the container 7 is closed. A blower circulates and pressurises the vapour.  In a further liquid treating embodiment, Fig. 4 (not shown), the arrangement is similar to that of Fig. 1 but the guiding conduits are cooled.  In other constructions the guiding conduits contain squeezing rollers arranged in pairs or in threes as in Fig. 7 (not shown) in which the inlet and outlet conduits are combined.  The rollers so positioned not only provide guides but act as inefficient liquid seals.  In Fig. 8 the guiding conduits each bear nozzles 54 directed against the flow in the conduits, and a counterpressure fluid which may be the sealing and treating fluid itself is fed in counterflow through the nozzles. The nozzles may however be inserted through the container 7 and terminate close to the openings of the conduits into the container. In Fig. 10 (not shown) a cushion of compressed gas is maintained above the liquid in the container 7. In a further modification the conduits 5, 6 are each associated with a separate container 7, the container co-operating with the conduit 6 being sealed and maintained at a higher gauge pressure than the tank 1 so that the sealing and treating liquid moves in counterflow through the conduit 6 into the tank and then through the conduit 5.  The cross-section of the inlet conduit may be made variable, and substances such as starch paste, glucose &c. may be added to the treating fluids to increase the sealing action.