A substrate glass forming device and a heating device for the drainage area thereof

Abstract

The invention discloses a heating device for the drainage area of ​​a substrate glass forming device, comprising a partition plate, a thermal insulation layer and a plurality of heating rods; one end of the partition plate is connected to the steel structure of the substrate glass forming device, and the other end is located inside the substrate glass forming device, and the partition plate is located inside the substrate glass forming device. The end is provided with an opening through which the substrate glass can pass, and the opening is located above the gap between the two edge pulling rollers of the substrate glass forming device; the thermal insulation layer is located between the steel structure and the drainage area of ​​the substrate glass forming device, and is connected to the inner surface of the steel structure The insulation layer is located above the partition plate; one end of the heating rod is located in the drainage area of ​​the substrate glass forming device after passing through the steel structure and the through holes opened on the insulation layer in turn, and the other end is located outside the steel structure. By using heating rods and insulation layers to make up for the loss of the temperature field caused by the cooling of the edge pulling machine, the influence on the temperature field of the drainage area is reduced, the purpose of stabilizing the temperature field of the drainage area is achieved, the occurrence of glass crystallization is prevented, and the service life of the equipment is improved. stable production.

Description

technical field

[0001] The invention belongs to the field of plate glass manufacturing equipment, and relates to a substrate glass forming device and a heating device for a drainage area thereof. Background technique

[0002] According to the Taman theory, the process of glass crystallization is the formation of nuclei and the growth of crystals. The main factors for crystallization are the formation rate of nuclei, the growth rate of crystals and the viscosity of the melt. When the temperature is higher than the liquid phase. At the line temperature, since no nuclei are formed, the glass melt will not crystallize.

[0003] In the production of substrate glass by the overflow method, when the molten glass enters the forming zone through the overflow device, the molten flat glass will shrink inward, and it needs to be clamped and rapidly cooled by the edge pulling machine to restrain the glass plate width. continued to shrink. However, at the same time, the temperature in t...

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