Furnace pressure stabilizing device for TFT liquid crystal glass kiln

Abstract

The invention discloses a TFT liquid crystal glass kiln furnace pressure stabilizing device which comprises a steel flue assembly, a condensate cleaning assembly is arranged in a condensate pipe opening of the steel flue assembly in a telescopic mode, a condensate falling pipeline assembly is fixedly arranged at the bottom of the steel flue assembly, and when condensate exists on the top of the steel flue inlet pipe, an upper gate valve is opened, a lower gate valve is closed, it is ensured that the whole steel flue is still in a closed state, and thus it is ensured that the furnace pressure is stable, telescopic translation of the semicircular condensate receiving disc in the steel flue inlet pipe is achieved through rotation of the first driving motor and cooperation of the internal thread translation block and the translation screw rod, and when the condensate is cleaned, the semi-circular condensate receiving disc extends into an inlet pipe of the steel flue, the condensate scraper rotates in the semi-circular condensate receiving disc in a scraping mode through rotation of the second driving motor and cooperation of the scraper rotating rod and the hexagonal guide rod, and scraped condensate falls into the semi-circular condensate receiving disc.

Description

technical field [0001] The invention belongs to the technical field of TFT glass manufacture, and in particular relates to a furnace pressure stabilizing device for a TFT liquid crystal glass furnace. Background technique [0002] Liquid crystal glass belongs to borate glass, and the content of borides and nitrogen oxides in the flue gas is relatively high. In order to ensure that the flue gas discharge meets the standard, NCR and other treatments are required for the flue gas. During the process of flue gas from the furnace to the NCR reaction tower, It is necessary to reduce the boride and other dust in the flue gas. In the design, the front-end flue part (3 supplementary air pipe) is used to quickly cool down the temperature with cooling air, so that the boride and other dust can be quickly condensed to meet the process requirements, but the condensation at the mouth of the flue The blockage is serious, and there is a large amount of condensation at the bottom of the flue...

AI Technical Summary

Problems solved by technology

[0002] Liquid crystal glass belongs to borate glass, and the content of borides and nitrogen oxides in the flue gas is relatively high. In order to ensure that the flue gas discharge meets the standard, NCR and other treatments are required for the flue gas. During the process of flue gas from the furnace to the NCR reaction tower, It is necessary to reduce the boride and other dust in the flue gas. In the design, the front-end flue part (3 supplementary air pipe) is used to quickly cool down the temperature with cooling air, so that the boride and other dust can be quickly condensed to meet the process requirements, but the condensation at the mouth of the flue The blockage is serious, and there is a large amount of condensation at the bottom of the flue outlet, which blocks the mouth of the flue and affects the internal pressure of the kiln.

[0003] The following problems exist in the prior art: in order to ensure normal furnace pressure and stable process, regular cleaning is required. At present, measures are taken to open the flue ash box and use stainless steel hooks (shovels) to take out (press and pull out the flow) and other methods to ensure that The flue gas is normally discharged to stabilize the furnace pressure. Due to the design of the kiln, the cleaning site area is small, the condensate cleaned out is large in dust, high in temperature, and has a high glass-like viscosity. The platform needs to be cooled before it can be cleaned, which will affect the operation of peripheral equipment and personal safety. During the cleaning process, the flue mouth is often opened to form a large amount of supplementary air, resulting in large fluctuations in furnace pressure. Fluctuations in furnace pressure will cause glass liquid in the kiln. Fluctuation brings a large number of defects. In order to ensure the safety of the internal equipment in this area and the stability of the furnace pressure, it is necessary to improve the flue cleaning operation. There is a lack of a method that can clean the condensate without opening the flue, and at the same time can control the pressure in the furnace. The flue cleaning structure that does not cause fluctuations is not conducive to ensuring the normal furnace pressure and the stability of the process

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