SU1612003A1 - Apparatus for forming synthetic fibre - Google Patents

Abstract

The invention relates to the production of synthetic fibers, in particular, to equipment for forming fibers from a polymer solution into a precipitation bath. It improves the uniformity of the concentration of the precipitating liquid. A device for forming synthetic fiber contains a trough with a sloping bottom, a spinneret set, a take-up drum and means for supplying and removing a precipitation liquid. In this case, the means for removing the liquid is made in the form of two drain pockets, one of which is located in the bottom of the trough under the spinneret set, and the other in the area of the pickup roller, behind the latter. The pockets are interconnected by pipelines into a single drainage system having an overflow wall, and the connection point of the drain pockets by pipelines is made below the bottom of the pockets. 1 il.

Description

The invention relates to the production of synthetic fiber, in particular to equipment for spinning a fiber from a polymer solution into a precipitation bath, and can be used in the continuous nitron production process of a fiber using a salt method in forming strands and filaments.

The aim of the invention is to increase the homogeneity of the concentration of the precipitating liquid in the trough.

The drawing is a diagram of the proposed device.

The device contains a trough 1, which has an inclined bottom 2 and is filled with a precipitating liquid 3. In the deepest part of it is the die set 4, the receiving roll 5 is located on the opposite side of the trough 1, On the side of the die set 4 there is a trough 1

sedimentation fluid supply means - supplying inlet 6 with distribution grid 7. The device includes means for removing precipitation liquid, which has 1 pocket 8 in the lower part of the trough and another pocket 9 located in the area of the receiving drum 5, pockets 8 and 9 are closed with grids 10, at the bottom 2 of the trough 1, interconnected by pipes 11 and 12 and communicate with a sleep system divided by an overflow partition 14 into two parts. The drain system 13 has a drain nipple 15. The pipes 11 and 12 are located under the bottom 2 of the trough 1. When the device is in operation, the precipitation liquid 3 flows through the supply nozzle 6 and the distribution grid 7 into the trough 1 and fills it to the level determined by the overflow 14 The die set 4 is lowered into the precipitation fluid.

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the bone 3 is washed by the flow coming from the distribution grid 7. Pockets 8 and 9 are intended to collect the spent precipitating liquid 3 and then remove it through pipelines 11 and 12, entrance 8 which is closed by grids 10, which protect the pipelines 11 and 12 from clogged with fiber waste. The pipe 11 is connected to the pipe 12, and the place of their connection is below the bottom of the trough 1. All the excess precipitating liquid 3 (testing) is drained through the pipe 15 of the drain system 13.

The device works as follows.

The spinning solution is forced through the die set 4 into the trough 1 filled with precipitation liquid 3. Immediately the process of diffusion of the sodium from the spinning solution into the precipitation liquid 3 begins. Freshly formed tow is taken on the drum 5 for further transportation. At the same time on the roller 5 there is a spin of the tow, which increases the diffusion of Rodanite sodium. Part of the spent precipitation liquid 3 is removed through the pocket 9, the grate 10 and the pipe 11. Another part due to the increased density gradually rolls along the inclined bottom 2 and through the grate 10 enters the pocket 8 and further into the pipe 12. The exhausted precipitating liquid 3 then enters the drainage system 13, overflows through the partition 14 and is removed through the nozzle 15. The optimum ratio of sections of pipelines 11 and 12 is chosen depending on the length and depth of the trough 1, the steepness of the inclined bottom 2, supply and removal dkosti 3, positioning of the receiving roller 5, etc. and in the final version is selected experimentally.

Piping 11 and 12 and their place of connection should be located

below the bottom of the trough 1. In this case, more concentrated and, therefore, more heavy liquid 3 is removed from pockets 8 and 9 in proportion to its flow.

in them, as the decisive factor here is the weight of the liquid pillars above the pocket 8 or in the system pocket 9 - pipeline 11 - the junction of pipelines 11 and 12. Next, the concentrated precipitation liquid rises into the drain system 13. There are no difficulties in this process, since the heavier liquid is compensated by a slight increase in the level in the trough 1. The location

The joints between pipelines 11 and 12 above (for example, adjacent to pocket 9) inevitably lead to fluid withdrawals, mainly from pocket 9, and accumulation of rodanite sodium at the bottom of the trough. .

The use of the invention allows to increase the homogeneity of the precipitation liquid during the molding process, which ultimately leads to an increase in the quality of the fiber, an increase in the grade of the final

products.

f o rm u l a and 3 o b e te n u

A device for shaping synthetic fiber, containing a trough with a sloping bottom, a die set and a receiving drum and means for supplying and removing a precipitating fluid, located in the trough, with the aim of increasing the uniformity of the concentration of precipitating liquid in the trough, The means for removing the precipitation liquid contains a pair of drain pockets made in the bottom of the trough, one of which is located under the spinneret set and the other behind the take-up roller, and interconnected by pipelines; Dineni which is located below the bottom of the trough. 45

eight

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Claims (1)

Claim A device for forming a synthetic fiber containing a trough with an inclined bottom, a spinneret kit and a pickup roller and means for feeding and removing sedimentary liquid located in the trough, characterized in that, in order to increase the uniformity of the concentration of sedimentary liquid in the trough, a means for removing sedimentary liquid contains a pair of drain pockets made at the bottom of the trough, one of which is located under the spinneret kit, and the other behind the intake roll, and interconnected by pipelines, the junction otorrhea located below the bottom of the trough. Compiled by A. Blechman Editor I. Schull Tehred M. Morgenthal Corrector M. Samborskaya Order 3816 Circulation 378 Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology 113035, Moscow, Zh-35, Raushskaya nab .. 4/5 Production and Publishing Plant Patent ”, Uzhgorod, 101 Gagarina St.