RU77270U1 - DEVICE FOR PRODUCING GLASS FIBER - Google Patents

Abstract

The proposed utility model relates to devices for producing capillaries, fibers, optical fibers and can be used in the manufacture of technical and optical glassware. The technical result from the use of the proposed utility model is to reduce the resistance to the movement of glass through openings in the vessels. The specified technical result is achieved by the fact that the device is equipped with a centering cover and a vibrator, while the centering cover is mounted on an external vessel, and the vibrator is connected to the internal vessel.

Description

The proposed utility model relates to devices for producing capillaries, fibers, optical fibers and can be used in the manufacture of technical and optical glassware.

Known devices that are close to the proposed purpose. For example, the devices described in [1] - [5] comprise a furnace for heating a workpiece, a mechanism for moving the workpiece in the furnace, and a drawing mechanism. The use of preforms, and not molten glass, complicates the preparation of the final glass product.

In the devices described in [6] - [8], the stretching of glassware is made from molten glass. However, these devices cannot ensure the dimensional stability of the cross section along the entire length of the drawn product.

Closest to the proposed utility model is a device for producing fiberglass [9], including a double vessel with holes in the bottom, equipped with a die made in the form of a flange, and coaxially located inner and outer nozzles. In this case, an axial channel and inclined channels are made in the flange, connecting the gap between the vessels with the gap between the nozzles, and the device is made of refractory material based on refractory oxides of aluminum, silicon and zirconium.

The disadvantages of the known device include the need to heat the glass to high temperatures to ensure the continuity of the process of drawing the glass through inclined channels, which reduces the viscosity of the glass and makes it difficult to obtain a stable cross-sectional geometry of the drawn glass along its entire length.

The task to which the creation of the proposed utility model is aimed is to ensure the stability of the geometry of the cross section of the manufactured glassware.

The technical result from the use of the proposed utility model is to reduce the resistance to the movement of glass through openings in the vessels.

The specified technical result is achieved by the fact that the device is equipped with a centering cover and a vibrator, while the centering cover is mounted on an external vessel, and the vibrator is connected to the internal vessel.

The essence of the utility model is illustrated by the drawing of figure 1.

The device contains an inner 1 and an outer 2 vessels with coaxial holes 3, 4. The outer vessel is closed by a lid 5, centering it relative to the inner vessel. Holes are made in the lid 6. The inner vessel rests on the vibrator 7, and the vibrator on the housing 8.

The device operates as follows.

Glass for the core is placed in the inner vessel 1, and glass for the shell is placed in the outer vessel 2 through the openings of the flap 5. Then the glass is heated to a predetermined temperature. After that, a vibrator 7 is turned on, which can be used as a piezoelectric vibration exciter, and the fiber is pulled through holes 3, 4.

In the proposed device does not create additional obstacles (in the form of channels, jumpers, etc.) for the passage of glass through the holes in the vessels (spunbond node). In this case, the alignment of the holes is ensured by the centering of the vessels with the help of a centering cover, which is located outside the spinneret assembly. Vibrations of the inner vessel further reduce resistance to the movement of glass through openings in the vessels. This allows you to reduce

glass heating temperature, increase the viscosity of the glass. As a result, the quality of the stretched fiberglass is improved [10].

Known devices do not allow to actively influence the molten glass in the fiber formation zone [11]. In the proposed device, vibrations, affecting the entire volume of the glass melt located in the vessels, make it possible to achieve great uniformity of the glass melt in viscosity. It also improves the quality of the drawn fiberglass. In addition, by varying the frequency of oscillations, it is possible to adjust the rate of flow of glass from the holes. Therefore, it becomes possible to control the process, achieving minimal deviations in the cross-sectional dimensions of the stretched fiber from the set values.

Thus, the introduction of the proposed device in the production of fiberglass will significantly improve its quality.

LITERATURE

1. A.S. USSR №310870

2. A.S. USSR No. 647264

3. A.S. USSR No. 983088

4. A.S. USSR No. 1209615

5. A.S. USSR No. 1330082

6. A.S. USSR No. 561707

7. A.S. USSR No. 945095

8. A.S. USSR No. 1368280

9. A.S. USSR No. 975613, (prototype).

10. Weinberg. V.B. Optic fiber / VB Veinberg, D.K. Sattarov - L .: Engineering, - 1977. - 320 p.

11. Fiber-optic communication: devices, circuits, and systems / ed. M. J. Howes and D.V. Morgan. - M .: Radio and communications, 1982. - 167 p.

Claims (1)

A device for producing fiberglass, containing external and internal vessels with holes in the bottom, characterized in that it is equipped with a centering cover and a vibrator, while the centering cover is mounted on an external vessel, and the vibrator is connected to the internal vessel.