Stirrer device capable of efficiently homogenizing and clarifying

Abstract

The invention disclosesa stirrer device capable of efficiently homogenizing and clarifying, belongs to the technical field of glass smelting, and aims to increase a glass transmittance by increasing the homogenizing efficiency and clarifying efficiency, and shortening the smelting time. The stirrer device is mainly characterized by comprising a stirring shaft, pore array tubes or the pore array tubes and a stirring frame and a rotary vent joint, wherein pore array tubes are arranged on a lower part of the stirring shaft; the stirring frame or the pore array tubes are arranged at a bottom end of the stirring shaft; the whole walls of the pore array tubes are provided with pores; the stirring shaft is provided with an inner cavity which is provided with an opening at an upper end; the inner cavity is in communication with inner cavities of the pore array tubes; the rotary vent joint is arranged at an upper end of the stirring shaft. The stirrer device has the characteristics that upper large-area molten glass and lower large-area molten glass are homogenized simultaneously, bubbles in the molten glass are gathered and eliminated by floating, the homogenizing time and the clarifying time are shortened, and the stirrer device is mainly applied to the preparation and production of small-batch or experimental clinkers by intermittent crucibles.

Description

technical field [0001] The invention belongs to the technical field of glass smelting, in particular to a stirring and homogenizing device for an intermittent crucible glass furnace. Background technique [0002] The optical glass used in small batches or experiments is generally produced in batch crucibles. This production method mainly uses agitator for homogenization or stirring and bubbling for homogenization. With the improvement of imaging quality requirements, the requirements for optical glass transmittance also increase. Therefore, major optical glass manufacturers have researched ways to increase transmittance. Shortening the homogenization or clarification time is the method to increase transmittance. one. In the patent CN 202046986 U, the method of bubbling and stirring is proposed to accelerate the homogenization of the glass. The advantage of this method is that it can mix the upper and lower glass liquids and increase the homogenization speed. The disadvantag...

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Problems solved by technology

In the patent CN 202046986 U, the method of bubbling and stirring is proposed to accelerate the homogenization of glass. The advantage of this method is that it can mix the upper and lower glass liquids and increase the homogenization speed. The disadvantage is that it is inconvenient to use and requires two or more One person looks at the position of the vent tube when it is lowered into the crucible, and one person puts and fixes the vent tube from the furnace top. At the same time, because the platinum vent tube is prone to deformation and bending at high temperature, it is easy to cause adhesion to the crucible wall. In severe cases, it may cause shutdown of the furnace

Patent CN 105174692 A proposes to add a stirrer above the general stirrer to speed up the homogenization. This method can improve the effect in theory, but it is rarely used in actual production. The platinum consumption is large and the loss is increased. , which is not conducive to cost saving, and cannot achieve the purpose of quickly mixing the upper and lower layers of glass liquid

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