SU842067A1 - Glass smelting vessel for moulding continuous glass fiber - Google Patents

Description

one

The invention relates to the building materials industry, in particular to equipment for producing glass fiber.

Apparatus for producing glass fibers are known, comprising a housing with a screen separating it in the smelting and working zones 1.

In order to provide the required vessel smelting capacity, the highest temperature is created in the smelting zone. However, due to the high temperature in the smelting zone, glass mass may be foamed, making it difficult for glass beads to continuously flow into the glass melting vessel, which violates the stability of the glass fiber drawing process, and causes overheating of the vessel to overlap, leading to its destruction.

Closest to the proposed technical essence and the achieved result is a glass melting vessel for forming continuous glass, fibers, including a body with a draw plate installed one above another iV-pC different screens facing to each other, and tokbodvodi 2j;

The goal is achieved by the fact that in a glass melting vessel for forming continuous glass fiber containing a body with a draw plate, mounted one above another V-shaped screens facing vertices to each other, and the current leads, the ratio of the thickness of the upper and lower screens is from

0 Oh, 8: 1 to Oh, 7: 1.

But since in this vessel the ratio of upper and lower screens tolstsyn from 1.2: 1 to 6: 1, causing different heat emission, leads to an increase in temperature in the upper part of the vessel. - the smelting zone, the device is applicable only for the production of refractory and high0 modular fibers. In order to obtain fibers from more low-melting glasses, for example, alkaline 7-A, the vessels of this construction are not applicable, since conditions are created

5 contributing to foaming glass melt.

The purpose of the invention is an increase in the service life of the vessel and the increase in productivity due to excluded I

0 foaming of glass melt.

In order to equalize the temperature of the glass melt to the width of the vessel, the lower screen is made in cross section in the form of a plate, the ratio of the distance between the walls of the lower screen to the width of the vessel being from 1: 3 to .1: 4. The height of the lower screen is 0.2-0.3 the height of the body. In order to improve the homogenization of the glass, the lower screen is evenly perforated and the area of the holes is 0.5-1.0 of the area of the holes of the top screen.

FIG. 1 shows the proposed device, a general view; in fig. 2 the same cross section; in fig. 3A-A in FIG. one.

The vessel body 1 is made without end walls in the form of a prism, at the base of which is a spout plate 2, having the shape of an elongated hexagon. Inside the body there are V-shaped screens: the top 3 and bottom 4. The edge of the top 3 screen is connected to the vessel body, and the bottom 4 is rigidly attached with its top along the entire length to the top of the top 3 screen. As the housing narrows, the screens also narrow. To the acute corners of the housing and the shields, through the inserts 5, the current leads 6 are attached. The upper part of the housing is the overlap 7, in which there are tubes 8 for loading glass beads

The device works as follows.

The glass balls 9 through the tubes 8 enter the melting zone formed by the overlap 7 and the V-shaped screen 3. The molten glass passes into the homogenization zone, where it undergoes additional heating due to the heat obtained from the heating element — the lower screen 4 — becomes thermally uniform. A homogeneous glass mass enters the working area adjacent to the spin plate 2 and through the nozzles 10 is drawn into the fiber 11.

The indicated vessel design, due to the displacement of the zone of maximum heating from the upper part of the vessel to the middle one, prevents foaming of the glass melt, facilitates the continuous flow of glass beads into the glass melting vessel, and equalizes the glass melt temperature in the vessel. As a result of achieving the required glass melt preparation, a sustainable process for the production of continuous glass fiber is provided when working with an alkaline glass.

The proposed design can be used when working with glasses of other compositions, such as aluminoborosilicate type E, as well as in slit-loading vessels.

Claims (3)

1. A glass melting vessel for forming a continuous glass fiber, comprising a body with a draw plate, installed, one above the other V-shaped screens facing each other, and a current lead, characterized in that, in order to increase service life and increase productivity by eliminating foaming of the glass melt, the ratio of the thicknesses of the upper and lower screens is from 0: 6: 1 to 0: 7: 1. 2. A glass-melting vessel according to claim 1, similar to the fact that, in order to equalize the temperature of the glass mass over the width of the vessel, the lower screen is made in cross section in horseshoe, the ratio of the distance between the walls of the lower screen to the width of the vessel is from 1: 3 to 1: 4, and the height of the lower screen is 0.2-0.3 of the height of the body. 3. Glass melting vessel on PP. 1-2, in order to improve the homogenization of the glass mass, the lower screen is evenly perforated and the aperture area is from 0.5 to 1.0 aperture area of the upper screen. sources of information taken into account in the examination 1. US Patent 3,628,930, cl. 652 published 1971. 2. Authors certificate of the USSR 544620, cl. From 03 to 37/02, 1975. (fut. i