Off-line coating feeding system

Abstract

The invention discloses an off-line coating feeding system which comprises a coating pot group and a heating component. The coating pot group is provided with at least two coating pots, each coating pot is connected with a coating storage pot through a feeding pipe with a pump and connected with a coating die holder through a discharging pipe, and a feeding switching unit selects one coating pot to feed coatings into the coating die holder. The heating component is used for heating the coating storage pots, the feeding pipes, the discharging pipes and the coating pots. According to the coatingfeeding system, before entering the coating die holders, the coatings are sequentially subjected to heating in the coating storage pots, pipeline heating and heating in the coating pots, particularly, the coatings are heated in a zero pressure standing environment in the coating pots, bubbles in the heated coatings float upwards (to liquid level or above the liquid level), expand and fracture andare discharged to the outside of the coating pots, so that the bubbles entrained in the coatings are removed, the purity of the coatings entering the coating die holder is ensured, and optical fiberquality is guaranteed.

Description

technical field [0001] The invention relates to a paint supply system, in particular to a low-pressure, off-line, bubble-free paint supply system. Background technique [0002] In order to save labor costs and improve the quality of optical fiber production, the centralized coating feeding method of the wire drawing production line has been valued by enterprises. Ton-level paint buckets are used instead of small paint buckets, and automatic centralized feeding replaces manual scattered paint replacement. The centralized feeding technology has brought about innovations in production efficiency. [0003] Patent Application No. 201410039702.0 "A Coating Material Continuous Concentrated Feeding Device and Its Feeding Method" introduces a method of online feeding to the paint buffer tank, and also introduces an automatic control method of paint feeding pressure. Since the paint is supplied to the buffer tank online, the requirements for pipeline pressure control are relatively h...

AI Technical Summary

Problems solved by technology

In addition, this method similarly adopts the online supply method. In order to control the pressure, a pressure pump is added to each paint tank. This structure has the problem of unstable pressure control and complicated structure, which belongs to high-pressure supply.

Due to the influence of the detection accuracy of the air bubble detector, the quality of the paint delivered to the mold base cannot be effectively guaranteed

The patent application No. 201010522799 "Feeding System for Preventing Bubbles in Optical Fiber Coating" introduces a method to remove bubbles in the paint by improving the structure of the feed pipe and detecting bubbles with a bubble detector. It is also limited by the detection accuracy of the detector and cannot Remove air bubbles completely

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