Silica glass continuous melting oven

Abstract

The invention discloses a quartz continuous-melting furnace, which consists of furnace and copple in the furnace, wherein the insulating layer is loaded between copple and furnace wall; the heating device is set between the copple periphery and insulating layer; the upper lid is placed on the furnace with through-out hole in the middle; one small lid is set on the through-out hole; the bottom of small lid possesses boss to mate sliding through-out hole; the sealing coil is set between boss periphery and through-out hole; the upper hole of copple connects boss of small lid; the lifting device is set between small lid and upper lid; 3-5 screw rods are fixed around small lid on the upper lid of lifting device, which loads planet lifting gear with big inner gear coil.

Description

technical field [0001] The invention relates to a quartz glass production technology, and mainly relates to continuous melting production equipment for ordinary quartz tubes, quartz rods and large-sized quartz tubes. Background technique [0002] At present, all types and specifications of resistance heating furnaces used in the production of quartz glass tubes at home and abroad all adopt crucibles with fixed fused silica. The outer circumference of the crucible has a heating element made of tungsten and molybdenum materials. The common point is that any cross section of the heating element is equal, which shows that the temperature emitted by the heating element is basically constant in the longitudinal distribution during the production process, and the longitudinal direction of the crucible cannot be adjusted. temperature. The production process of quartz glass tubes in the crucible and out of the crucible mouth is divided into several parts: preheating zone-melting zon...

AI Technical Summary

Problems solved by technology

When producing quartz glass tubes or rods of different specifications, there are different requirements for the temperature index of the whole process, especially the higher temperature requirements in the forming area. If the power of the heating element is changed, the preheating area, melting area, The temperature in the exhaust zone, which can cause serious defects in the production of quartz glass tubes or rods

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