Molten tin bath pollution gas guide device

Abstract

The invention relates to a molten tin bath pollution gas guide device. The molten tin bath pollution gas guide device comprises a molten tin bath top brick (1), a molten tin bath top cover (3), a hanging component (2) arranged between the molten tin bath top brick and the molten tin bath top cover, and a gas inflow pipeline (4) arranged on the molten tin bath top cover. The molten tin bath pollution gas guide device is characterized in that a set of partition bricks (6) are arranged in a bath top space (5) between the molten tin bath top brick and the molten tin bath top cover, the bath top space is divided into a plurality of partition areas by the partition bricks, and a pressure meter (7) and a gas inflow valve (8) are respectively arranged in the corresponding partition. Due to the adoption of the technical scheme, the pressure of protecting gas from a molten tin bath inlet to a molten tin bath outlet is controlled to gradually increase, pollution gas is forced to overflow from the molten tin bath inlet, the probability that glass is contaminated is reduced, and the quality of products is improved.

Description

Technical field: [0001] The invention relates to glass production equipment, in particular to a tin bath polluted gas guiding device. Background technique: [0002] In the flat glass float process, the tin bath is a forming device for containing molten tin liquid. The forming principle of flat glass is that the molten glass enters the tin bath from one end of the tin bath, and the glass liquid floats on the tin liquid and spreads flat. While forming flat glass, the formed flat glass is sent out from the other end of the tin bath. Since the tin liquid is easy to oxidize, it is necessary to inject a protective gas mixed with nitrogen and hydrogen into the tin tank to keep a positive pressure in the tin tank to prevent oxygen outside the tin tank from entering the tin tank, and the protective gas is injected from the top cover of the tin tank, by The cracks of the top tiles of the tin tank seep into the tin tank, overflow from the inlet and outlet of the tin tank and seep out ...

AI Technical Summary

Problems solved by technology

In actual use, there will always be a small amount of oxygen infiltrated into the tin bath to oxidize the tin liquid, and the polluting gas stannous oxide (SnO) will be generated in the high temperature area of ​​the tin bath entrance, and the polluted gas will drift to the low temperature area, and the temperature will drop to 870 Below ℃, stannous oxide gas will turn into solid powder containing tin compounds, which is called tin ash. If tin ash falls off on the glass belt, it will produce optical distortion points, forming pollution points and affecting the quality of products.

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