On-line heating device and method for tin liquor backflow in float glass tin bath

Abstract

The invention relates to the technical field of glass production adopting a float forming process, which particularly relates to an on-line heating device and a method for tin liquor backflow in float glass tin bath. The method is characterized in that the backflow tin liquor temperature measured by a temperature measuring element (3) is gathered; the input electric power of an electric heating element (2) is adjusted; tin liquor flowing back to a lower side wall brick (4) is heated, so that the tin liquor reaches the set temperature; and tin liquor in the downstream position of a tin bath flows back through a groove structure of the lower side wall brick (4) to be separated from other tin liquor, so that tin liquor flows back and is fixed in the bath and flows to an upstream position. The device properly solves the influence on glass in the tin bath, which is flattened and thinned by the backflow temperature and flow direction of the downstream tin liquor in the tin bath, can effectively and conveniently adjust the temperature of the tin liquor at the side part of the tin bath and control the flow direction, avoids the mutual and severe disturbing influence caused by the high heat conductivity of the tin liquor when bath top electric heating control is adopted, and is very beneficial to reducing the horizontal temperature difference in the tin bath and building reasonable glass forming temperature field.

Description

[technical field] [0001] The invention relates to the technical field of glass production using a float forming process, in particular to a method for controlling the temperature and flow of tin liquid in a tin bath during float glass production, and particularly relates to the production of ultra-thin float glass. [Background technique] [0002] For a long time, in the traditional float glass production line, the return flow of tin liquid in the tin bath lacks temperature regulation and liquid flow control methods, resulting in serious temperature difference and convection of the horizontal tin liquid, which greatly affects the flattening and thinning of the glass liquid after entering the tin bath. The drawn glass is restricted in the optical performance index of the zebra angle, especially when the ultra-thin glass is produced by the float method, the thickness difference, micro-wave and other indicators cannot meet the quality requirements, and the ideal ultra-thin glass ...

AI Technical Summary

Problems solved by technology

[0002] For a long time, in the traditional float glass production line, the return flow of tin liquid in the tin bath lacks temperature regulation and liquid flow control methods, resulting in serious temperature difference and convection of the horizontal tin liquid, which greatly affects the flattening and thinning of the glass liquid after entering the tin bath. The optical properties of the drawn glass are restricted in terms of the zebra angle, especially when the ultra-thin glass is produced by the float method, the thickness difference, micro-wave and other indicators cannot meet the quality requirements, and the ideal ultra-thin glass cannot be produced

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