Vertical-type quartz tube automatic cleaning machine and cleaning method

Abstract

The invention discloses a vertical-type quartz tube automatic cleaning machine and a cleaning method. The vertical-type quartz tube automatic cleaning machine comprises a shell, and further comprisesa control system, a cleaning cavity, a liquid storing tank and a spraying mechanism which are arranged in the shell; a backflow hole and a base plate support seat are arranged at the bottom of the cleaning cavity; a pneumatic distribution valve group is mounted below the backflow hole and connected with the liquid storing tank, a wastewater discharging outlet and a waste liquid discharging outlet,wherein the wastewater discharging outlet and the waste liquid discharging outlet are formed in the shell; and the base plate support seat is connected with the liquid storing tank, a cleaning pipeline and a first nitrogen pipeline through a liquid inlet pipeline. The cleaning efficiency and cleaning quality of the cleaning machine can be improved, meanwhile acid liquid and alkali liquid can be recycled, and thus the production cost of enterprises is lowered.

Description

technical field [0001] The invention relates to the technical field of optical fiber production auxiliary equipment, in particular to a vertical quartz tube automatic cleaning machine and a cleaning method. Background technique [0002] In the optical fiber manufacturing industry, the in-pipe process is an irreplaceable process method for the manufacture of preform core rods. Among the four major optical fiber preform manufacturing processes, MCVD process and PCVD process all adopt the in-pipe method. The in-tube manufacturing process generally uses a high-purity quartz tube as the substrate tube. The high-purity gas-phase raw material reacts with oxygen to form oxide glass particles deposited on the inner wall of the substrate tube. After the deposition is completed, the optical fiber is formed through the melting process. Preform mandrel. Obviously, the base tube will also become a part of the preform core rod after the deposition process is completed. Therefore, the clea...

AI Technical Summary

Problems solved by technology

In the prior art, the cleaning of the substrate tube is generally carried out manually or automatically by equipment on the inner wall of the quartz tube by using lye, HF acid solution, pure water, etc., and more manual operations are required in the whole cleaning process. This method On the one hand, the degree of automation is low, and the cleaning efficiency and effect are poor. On the other hand, the excessive entry of manual operations in the cleaning process also brings a very large safety hazard.

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