CS259583B1 - Spasab zone washing of filament yarn and equipment for this kind - Google Patents

Abstract

The method of zone washing and refining of continuous fibers passing in coils over two rotating bodies, so-called washing cylinders, solves the economy of production as well as ecology by reducing the volumes of waste baths by the fact that the bath sulfurized from the zone of the upper rotating body is repeatedly transferred to another working or refining zone of the lower rotating body by means of a scraping member with a flexible scraping bar and with separate collection troughs, drain channels and drains.

Description

BACKGROUND OF THE INVENTION The present invention relates to a method and apparatus for zinc refining and washing endless, in particular viscose, filaments, generally in the form of two rotating bodies, such as cylinders, conoids, and the like, in order to reduce the number and ob -washing and washing media with maximum utilization in the production of chemical fibers.

In the semi-continuous and continuous production of viscose fibers resulting from the spinning of the viscous solution, the viscose is spun into the spinning bath, the fibers of this bath being pulled, for example, by a galet, and guided to two rotating bodies, such as rollers, conoids and the like. with a rotational or incremental relative rotational position. After the two rotating cylindrical bodies, the filament passes through, the fibers in the wraps from one side to the other, whereby it is subjected to refining and washing compositions. The length of the fiber, possibly the fibers, at the moment of the cylinders and the intensity of the rinse and wash processes, are a factor in both the technological production speed of the fiber and its quality. As a rule, the maximum fiber length on the val-coch is limited by adhering to the acceptable size of the knot and also by keeping the minimum value of the thread pitch on the rollers in view of the operational reliability of the knot. The intensification of the technological processes involved in the formation, refinement and fibrillation leads to an increase in the number of technological baths fed to the fiber; to increase the supplied volumes of these baths as well as their temperatures.

However, such solutions bring more complex supply and distribution systems to the spinning machines, and at the same time deteriorate the material and energy performance of the fiber production. A considerable problem also appears to be to maintain the constant flow rates of the refining and washing media as well as between the time points. Currently, there are several methods of supplying the refining and washing fibers to the fibers, respectively to the rolls of which the fiber passes. The most common method of supplying the refining and washing media to one of the pairs of rollers over which the filaments are guided by multiple wrapping, the mutual separation of the baths is solved by the use of wipers or grooving of the rollers located in the zone between the two baths and the by-pass bath of the rotating rollers -I sprayed. A disadvantage of such a bathing process is the uneven spraying of the bath from the cylinder due to the rolling of the cylinders, their surface tension on the liquid coating on the cylinder, the undefined residence of the fresh bath on the surface of the cylinder, and the like. fiber refinement in this time unusable and for its possible use it is necessary to remove it from the machine and transport it carefully to the technological process of refining the fibers.The losses resulting from the spraying of the bath increase the consumption of these baths. the number of finishing and washing baths used.

The aforementioned drawbacks are solved by the novel sponge scrubbing and refining apparatus of the present invention with the fibers passing through at least two cylinders, whereby the sponge bath is fed to the surface generally of the lower rotating roller and forming a cylindrical roller with an annular shell bath. of the filaments wound onto the upper rotating cylinder, of which it is wiped and fed to any other zone at the bottom of the lower cylinder, the cycle of discharging the bath to the upper cylinder and its subsequent wiping and transfer to 1 ' Any zone on the surface of the lower cylinder is then plated at least 2 times.

Such a method of washing the fibers passing through the wraps over at least two rolls makes it possible to produce an effective countercurrent protection with the multiple times the bath being brought to the washing and thus minimizing the consumption of the baths and the energy needed to heat them. Further, it allows the formation of a coherent zone refinement, wherein the refining bath is preferably formed by transferring the waste water of the waste, or a portion thereof, to that zone on the valts to which the fiber or fibers carry the spinning bath. Such a solution makes it possible, without the need for an additional piping system, to create a refining bath in the washing roller compartment, taking part in the satechnological process and generating favorable conditions for the subsequent regeneration of the substances contained therein. A further advantage of the zone washing and refining fibers is the removal of the spraying of the accumulated bath from the lower cylinder, and thus the refinement and washing conditions on the individual mixing machines of the coupling machine. The advantages of the zone washing and refinement method are shown in the accompanying drawings, in which Fig. 1 shows the first case of zone washing in 3 zones and Fig. 2 shows the case of zoning in 6 zones.

According to the invention, the zone washing and refining method is provided by means of which a wiper member 1, located above the upper rotating body 3, has a resilient wiper strip 2 adjacent the upper rotating hotel surface 3, and the wiper member 1 is under the spring

Claims (2)

1. A method of zone washing and refinement, in particular of continuous filaments passing in a wrap around at least two rotating bodies, wherein the bath fed to the fibers wrapped on the lower rotating body, is fed to the upper rotating body, characterized in that the washing bath is used in one the fiber winding group and thus brought into the upper washing zone is continuously wiped and fed to one of the preceding or following fiber winding groups. Apparatus for washing and quenching, in particular, continuous filaments in at least two rotating bodies according to claim 1, characterized in that under the upper rotating body (3) there is a scraper member (11) at the top provided with a flexible scraper (2) adjacent to a surface of the upper rotating body (3), wherein at least three collecting grooves (5) are provided in the body of the scraper member (1j), provided with outflow channels (6) and outflows (7), each outlet (7) extending above the lower rotating body (8) outside the zone of this collecting groove (5).