GB728778A - Improvements in or relating to apparatus for removing liquid from a wet running yarn - Google Patents

Abstract

<PICT:0728778/IV (a)/1> <PICT:0728778/IV (a)/2> Apparatus for removing liquid from a wet running yarn, e.g. a freshly coagulated artificial-filament yarn, comprises one or more suckers each comprising a tubular member provided, as its only opening to the atmosphere, with a transverse slot communicating with the interior of the member, in combination with means for applying suction to the interior of each member and thereby drawing air through the slot into the interior of the member and with means for causing the yarn to travel through the slot or slots. Preferably the axes of all the tubular members lie in a single plane, and the slots all lie in a single plane normal to it. Preferably, also, some liquid is removed from the yarn by means of a wiper or wipers arranged in advance of the suckers. As shown in Fig. 2 (a front-elevational view, partly in section), a yarn 11 passes upwardly together with a stream of liquid through a conduit 12 and then through a chamber 13. Part of the liquid which the yarn carries up from the conduit 12 is wiped from the yarn by causing the yarn to pass through vertically aligned slots 24, 26 in two short sloping cylindrical rods 25, 27 mounted on a vertical header 21 having its upper end closed by a cap 22 and its lower end passing through the wall of the chamber 13 to a coupling 23. The liquid discharged from the conduit 12 and dripping from the wipers 25, 27 escapes from the lower end of the chamber 13 through an outlet conduit 17, 18, 19 provided with a screen 20. The yarn passes upwards from the wipers 25, 27 through vertically aligned slots 32 in four suckers each comprising a tubular member 29 having one end communicating with the interior of the header 21 and the other end closed by means of a screw 31. The header 21 is connected by means of the coupling 23 to a source of suction (not shown). The yarn after leaving the uppermost tubular member contacts a rod yarn guide supported by the header 21 and then passes through an annular yarn guide 34 in the top of the chamber 13 to the pulley 35. In a modification the slots 44, 46 (Fig. 6) are on opposite sides of the wipers 45, 47 respectively and extend to a depth short of the axes of the wipers. Similarly the slots 54 in the suckers 51 are on alternate sides of the tubular members and do not extend as far as their axes. As a result the yarn 43 passing through the apparatus is forced into a zig-zag path, and is to some extent flattened. The ends 48, 49 of the wipers and the ends 53 of the suckers are bevelled so as to facilitate the initial guiding of the yarn into the slots when threading up.