Multifunctional quartz glass continuous melting furnace

Abstract

The invention discloses a multifunctional quartz glass continuous melting furnace which comprises a crucible (1), a furnace body (2), a heater (3), a mandrel (4) and a forming die (5), and is characterized in that a through hole is formed in the center of a furnace cover (6); a crucible lifting seat (20) is mounted in the through hole; the upper end of the crucible (1) is supported on the crucible lifting seat (20); the crucible lifting seat (20) is adjusted and located in the height direction in the through hole through at least three groups of screw-nut structures (21) mounted on the furnace cover (6), so that a distance between the bottom of the mandrel and the forming die is adjusted to adjust the pipe diameter of a quartz tube rod (10); a cross deviation adjustment device (8) is mounted at the upper part of the crucible lifting seat (20); one end, which extends out of the furnace cover (6), of the mandrel (4) is mounted in the cross deviation adjustment device (8); the mandrel (4) can be adjusted in the X and Y directions on the horizontal plane under the control of the cross deviation adjustment device (8), so that adjustment of wall deviation of a pipe is realized. The multifunctional quartz glass continuous melting furnace is simple in structure and convenient to adjust, and can substantially improve the consistency of pipe walls and improve the product quality.

Description

technical field [0001] The invention relates to a quartz technology, in particular to a quartz melting furnace technology, in particular to a multifunctional quartz glass continuous melting furnace. Background technique [0002] As we all know, an important factor that determines the quality of the quartz tube is the wall deviation of the quartz tube. If the wall deviation occurs, it will directly affect the quality of the quartz tube. The core rods of existing melting furnaces are all suspended on the furnace cover, and the length of the core rods is generally greater than 1.5 meters. The wall deviation of the pipe is adjusted by using the tightness of the screws around the furnace cover. There is a high temperature of more than 2200 degrees in the tungsten pot. The thermal expansion coefficient of the tungsten-molybdenum material of the core rod will be deformed due to high temperature, and the instability caused by the downward flow of the quartz sand melt will cause the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the pipe wall thickness is inconsistent due to the offset of the mandrel gap in the existing continuous melting furnace during the pipe forming process, which affects the product quality and cannot realize the online adjustment of the pipe size. Adjust the position of the core rod to achieve high-precision control of the wall thickness adjustment of the pipe wall, and adjust the height of the crucible to realize the multi-functional quartz glass continuous melting furnace.

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