An online filtration circulation system and method for etching solution containing glass powder

Abstract

The invention belongs to the technical field of liquid crystal display panel etching, and discloses a glass powder-containing etching solution on-line filtering circulating system and a method. The glass powder-containing etching solution on-line filtering circulating system is provided with a press filtration system; the press filtration system comprises an online press filtration circulating system, and two standby liquid press filtration devices; the online press filtration circulating system is arranged at the bottom of an acid storage tank, is tapered, and is used for on-line continuous clearing of waste residue accumulated at a cone bottom via continuous passing through of a press filter; the two standby liquid press filtration devices are used for alternative circulating applications in filtration of waste residue-containing etching solution. According to the glass powder-containing etching solution on-line filtering circulating system, filtering and settlement are adopted, waste residue removing is carried out as far as possible in production process, accumulation of waste residue in etching solution is reduced, etching solution using cycle is prolonged; reduction of wasteresidue accumulation is also realized via on-line press filtration; the two standby liquid press filtration devices are adopted, removing of waste residue through press filtration of standby liquid isrealized; the above design is capable of realizing etching solution purification as far as possible, and ensuring production quality and batch production continuity.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display panel etching, and in particular relates to an online filtration circulation system and method for etching solution containing glass powder. Background technique [0002] The etching process of the liquid crystal display panel changes from the immersion type to the top spraying type. The magnetic pump used in the top spraying sprays the etching solution evenly on the surface of the product through the nozzle, so that the product can be uniformly thinned to the thickness required by the customer. However, due to the repeated etching of the etching solution During the reaction process, a large amount of glass powder is easily produced. These glass powders are accumulated at the nozzle through the high-pressure circulation of the magnetic pump, which eventually leads to the blockage of the nozzle, uneven thickness of the etched product and even batch scrapping of the product. [0003] ...

AI Technical Summary

Problems solved by technology

The present invention deeply analyzes the glass top-spraying process and finds out the mass production process conditions of the top-spraying process. However, the biggest difficulty hindering mass production is the problem of nozzle clogging. The "waste residue" of the final realization of continuous production

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