SU595261A1

SU595261A1 - Device for cooling fibres in forming zone

Info

Publication number: SU595261A1
Application number: SU2164358K
Authority: SU
Inventors: Ризван Закирович Алиев; Хасбулат Гусейнович Дандамаев; Раиса Ивановна Васильева; Николай Петрович Павлов
Original assignee: Дагестанский Политехнический Институт
Priority date: 1975-07-25
Filing date: 1975-07-25
Publication date: 1978-02-28
Also published as: SU595260A1

Description

1one

Изобретение касаетс устройства дл выработки непрерывного волокна и может быть использовано нрн производстве непрерывного стекл нного волокна.The invention relates to a device for the production of continuous fibers and can be used in the production of continuous glass fibers.

Известно устройство дл охлаждени волокон в зоне формовани , выполненное в виде охлаждаемого полого контура с ребрами-экранами 1.A device for cooling the fibers in the forming zone is known, made in the form of a cooled hollow contour with ribs 1.

Наиболее близким к изобретению вл етс устройство дл охлаждени , выполненное в виде контура с ребрами-экранами из пористого материала, соединенного с коллектором дл подачи охлаждающего агента 2.Closest to the invention is a device for cooling, made in the form of a contour with ribs-screens of porous material connected to a collector for supplying a cooling agent 2.

Однако это устройство не позвол ет достичь необходимой локальной компенсации разрежени по всему фильерному полю и осуществл ть независимое от величины теплосъема регулирование влажности воздуха в нодфильерной зоне формовани .However, this device does not allow to achieve the necessary local compensation of the vacuum over the entire spinnerette field and to carry out air humidity control in the no-filter molding zone, independent of the magnitude of the heat removal.

Отрывность волокон при этом сохран етс , не достигаетс необходимой стабильности процесса и, кроме того, устройство одинаково интенсивно охлаждает как луковицы формирующего волокна, так и фильеры и фильерную пластину, что снижает производительность .The detachment of the fibers is maintained, the required stability of the process is not achieved and, moreover, the device equally intensively cools both the bulbs of the forming fiber, and the spinnerets and the die plate, which reduces productivity.

Целью изобретени вл етс уменьшение обрывности.The aim of the invention is to reduce breakage.

Дл этого в предлагаемом устройстве контур выполнен в виде двухканальной трубки.For this, in the proposed device, the contour is made in the form of a two-channel tube.

верхн из которых соединена с коллектором дл подачи воды, а нижн - с коллектором подачи воздуха, причем верхн поверхностьтрубки выполнена нз непроницаемого материала , а нижн - с отверсти ми, диаметр которых уменьшаетс от центра к периферии.the upper part of which is connected to the water supply collector, and the lower one - to the air supply manifold, the upper surface of the tube is made of impermeable material, and the lower surface has holes whose diameter decreases from the center to the periphery.

На фиг. 1 показано предлагаемое устройство , вид сбоку; на фиг. 2 - вид по стрелкеFIG. 1 shows the proposed device, side view; in fig. 2 - view along the arrow

А на фиг. 1; на фиг. 3 - разрез по Б-Б на фиг. 1.And in FIG. one; in fig. 3 is a section along BB in FIG. one.

Предлагаемое устройство дл охлаждени волокон включает ребра-экраны в виде двухканальных трубок 1 из пористого материала.The proposed device for cooling fibers includes ribs-screens in the form of two-channel tubes 1 of porous material.

Верхние каналы 2 двухканальных трубок 1 через контур 3 соединены с трубопроводом 4 подачи воды. Нилсние каналы 5 двухканальных трубок через контур 6 соединены с трубопроводом 7 подачи воздуха. Верхн поверхность 8 двухканальных трубок выполнена нз непроницаемого материала, а на нижней поверхности имеютс отверсти 9, диаметр которых или плотность расположени (количество отверстий на единицу длины трубки)The upper channels 2 of the two-channel tubes 1 through the circuit 3 are connected to the pipe 4 water supply. Nilsny channels 5 dual-channel tubes through the circuit 6 is connected to the pipeline 7 air supply. The upper surface 8 of two-channel tubes is made of impermeable material, and on the lower surface there are holes 9, the diameter of which or density of arrangement (the number of holes per unit length of the tube)

Claims

decreases from the center to the periphery of the draw plate, i.e., symmetrically to the distance from the axial lines a-a and b-b of the draw plate. The axial lines of the holes 9 are parallel to the stretching of the nearest fibers 10. The most preferred material of porous two-channel tubes is metal-ceramic. In the process of drawing the fibers 10 from the spinneret feeder 11, a controlled amount of water is continuously supplied to circuit 3, and a controlled amount of air is supplied to circuit 6. Water percolates through the porous walls of the two-channel tubes 1 and evaporates into the under-filler zone through their outer surface and into the lower channels 5 through the porous bridge 12 between the channels. Moist air escapes from the openings 9 and flows around the forming fibers 10 in the direction of their drawing. This eliminates transverse streams and ambient air inflows into the underfilter zone. This increases the stability of the process and reduces the breakage of elementary fibers. The implementation of the upper (facing to the die plate and the plate plate) walls of the rib screens made of solid material allows maintaining low heat removal from the plate plate and the die plates, the high temperature of the glass melt in the die plate and the spinnerets and, consequently, the low viscosity of the glass melt and high vessel performance. The proposed facility makes it possible to regulate the aerodynamic and heat – moisture conditions in the subfilter zone by changing the water supplied to the device and the water evaporated from the surface of the rib screens and supplied to the device air. It allows one to selectively regulate the heat removal from the bulbs of the forming fiber and, therefore, to create optimal conditions corresponding to the greatest stability of the process and performance of the spunbond feed through the fiber in the under-filler zone. Apparatus of the invention for cooling the fibers in the forming zone, comprising a loop of porous material connected to a manifold for supplying a cooling agent, characterized in that, in order to reduce the breakage, the loop is made in the form of a two-channel tube whose upper channels are connected to a collector for water supply and the lower ones with an air supply manifold, the upper surface of the tube being made of an impermeable material, and the lower one with holes whose diameter decreases from the center to the periphery. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 254732, cl. S OZ 37/02, 1967.

2. US Patent No. 3518069, cl. 65-2, 1970.

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