A tin bath inlet channel for float electronic display glass production

Abstract

The invention provides a tin bath inlet passage for the production of float electronic display glass, which includes a main body (1) of the tin bath inlet passage, and is characterized in that: the main body (1) of the tin bath inlet passage is sequentially provided with adjusting gates (2) ), the safety gate (3), the first 0 shell (4), one end of the main body (1) of the tin bath inlet passage is provided with a baffle (5), and the main body of the tin bath inlet passage on the side of the baffle (5) (1) is equipped with a group of silicon carbide rods (6) and thermocouples (7), and a second 0B (8) is also provided in the main body (1) of the tin bath inlet channel on the side of the first 0B (4) . The invention has a simple structure, reduces the difficulty of flattening and forming the glass liquid in the tin bath, stabilizes the glass liquid level and flow rate, and ensures the stability of the physical properties of the glass; reduces the damage of the reducing atmosphere of the tin bath to the platinum in the platinum channel, etc. advantage.

Description

Technical field: [0001] The invention relates to the field of float electronic display glass production, in particular to a tin bath inlet channel for float electronic display glass production. Background technique: [0002] The tin bath is an important part of the float glass production line. It forms the entire production line together with the melting furnace, the annealing kiln and the cold end equipment. In actual production, the high-temperature glass liquid that has been melted, clarified and cooled in the furnace enters the tin bath for forming through the inlet end of the tin bath, then goes through the annealing kiln for annealing, and finally enters the cold end for cutting. [0003] The inlet end of the tin bath is the channel for introducing the molten glass into the tin bath, which acts as a link. For ordinary float glass, the temperature of the molten glass entering the tin bath through the inlet end of the tin bath is about 1000 °C, and the viscosity of the ...

AI Technical Summary

Problems solved by technology

Due to the small width of the outlet of the platinum channel, when using the inlet end structure of the tin bath in the traditional float glass production, it will increase the difficulty of flattening and forming the molten glass in the tin bath due to the narrow flow channel and short length.

[0006] In order to facilitate the flattening and forming of the molten glass in the tin bath, the temperature of the high-temperature section of the tin bath is usually raised. On the one hand, the energy consumption increases after the temperature is raised. Need to use more high-grade materials, increase cost input, and run at high temperature for a long time, increasing the probability of failure

[0007] In addition, the liquid level gauge in the production of ordinary float glass is installed at the position of the cross passage or branch passage of the melting furnace. Since the volume of glass liquid in the furnace is very large, the change of the opening of the flow regulating gate will not cause the liquid level at the liquid level detection point to decrease. large fluctuations, thus affecting the detection of the real liquid level

However, in the production of float electronic display glass, the liquid level gauge is installed in the platinum channel. Since the platinum channel is usually a round tube within 500mm, the volume of the glass liquid in the platinum channel is very small, and the change of the opening of the flow adjustment gate will cause the liquid level detection point. The large fluctuation of the liquid level affects the detection of the real liquid level; furthermore, the feeder is affected by the increase or decrease in the process of linkage with the liquid level gauge, which intensifies the fluctuation of the liquid level, affects the stability of the glass flow, and causes glass Fluctuations in a series of glass physical properties such as thickness, thickness difference, and stress

[0008] Conversely, when using the structure of the inlet end of the tin bath in the traditional float glass production, due to the narrow flow channel and short length, when the temperature of the platinum channel changes, the viscosity of the glass liquid will also change due to the temperature change. Affect the flow rate of the glass liquid, causing fluctuations in a series of glass physical properties such as glass thickness, thickness difference, and stress

The feedback of the test results of glass physical properties is relatively lagging. When the flow of glass liquid and other conditions that affect the physical properties of glass occur, a large amount of glass will be discarded, causing losses to glass manufacturers.

[0009] There is a reducing atmosphere in the tin bath. If it enters the platinum channel, the reducing atmosphere will destroy the oxide protective film on the surface of the platinum and enhance the activity of the platinum, which will lead to increased corrosion of the platinum channel and affect its service life.

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