Balancing method and balancing device for temperature of rolled molten glass runner

Abstract

The invention discloses a balancing method and a balancing device for temperature of a rolled molten glass runner, and the balancing method comprises the steps: arranging a plurality of groups of vertically-arranged cylindrical turbulent flow assemblies on a flowing path of molten glass, so that the molten glass flowing along the molten glass runner is guided by the vertically-arranged cylindrical turbulent flow assemblies to be transversely shunted for multiple times, and the molten glass flow at the edge part of the molten glass runner is increased; the balancing device comprises a plurality of groups of vertically arranged cylindrical turbulent flow assemblies which are arranged in a molten glass runner along the flowing direction of molten glass, and each cylindrical turbulent flow assembly is provided with an incident flow surface facing the molten glass. According to the invention, the transverse temperature difference of molten glass in the molten glass runner can be effectively reduced, and the temperature difference when the molten glass enters the calender for molding treatment is greatly reduced, so that the production quality of glass plates is improved, and the production benefit is improved.

Description

technical field [0001] The invention relates to the technical field of glass furnaces, in particular to a method and a balancing device for balancing the temperature of a rolling glass molten flow path. Background technique [0002] In the production and manufacture of rolled glass, the molten glass that meets the molding requirements flows out from the flow hole of the kiln and then enters the molten glass channel, and the molten glass flows through the molten glass channel and then enters the calender for molding. When the molten glass flows in the molten glass flow channel, the molten glass at the edge of the molten glass flow channel is due to heat exchange with the edge of the molten glass flow channel, resulting in a fast cooling rate and a low temperature for the molten glass at the edge of the molten glass flow channel. The temperature of the molten glass in the middle of the liquid flow channel is relatively high because the heat is not easy to dissipate, which make...

AI Technical Summary

Problems solved by technology

When the molten glass flows in the molten glass flow channel, the molten glass at the edge of the molten glass flow channel is due to heat exchange with the edge of the molten glass flow channel, resulting in a fast cooling rate and a low temperature for the molten glass at the edge of the molten glass flow channel. The temperature of the molten glass in the middle of the liquid flow channel is high because the heat is not easy to dissipate, which makes the temperature distribution of the molten glass in the molten glass channel uneven in the lateral direction. When the molten glass with a temperature difference in the lateral direction enters the calender When the molding process is carried out in the interior, it will lead to uneven thickness of the formed glass plate, which will affect the quality of the produced glass plate. quality has an important impact

[0003] In the prior art, there are mainly two technical solutions for solving the above-mentioned technical problems. The first solution is usually to increase heating facilities at the edge of the molten glass channel, and use the heating facility to heat the glass flowing to the edge of the molten glass channel. The temperature difference of the molten glass at different positions in the lateral direction is reduced by increasing the temperature of the molten glass at the edge of the molten glass flow channel. However, the temperature control accuracy of the heating facility for the molten glass at the edge is not high. The service life of the equipment below is not long and it is easy to bring in impurities, so the temperature balance cannot be effectively controlled; the second solution is to change the bottom structure of the glass liquid channel, and set a stepped climbing slope at the bottom of the glass liquid channel Structure, or the masonry bricks in the middle of the molten glass channel are higher than the edge of the molten glass channel, so that the molten glass flowing into the inner edge of the molten glass channel is more and the glass molten in the middle is less, so as to make the edge of the molten glass channel The purpose of increasing the temperature of the inner part to balance the temperature of the molten glass in the lateral direction, but in actual production, in order to adapt to different production situations, the height of the liquid glass level needs to be adjusted in real time, but the structure of the bottom of the molten glass channel cannot follow Change, when the height of the glass liquid level changes, it will cause the amount of glass liquid flowing into the edge and middle of the glass liquid channel to change, which will lead to the loss of temperature balance. In addition, when the glass liquid level drops a lot, it will even cause glass liquid. The higher part of the bricks in the middle of the channel exposes the glass liquid surface, which will easily cause the bricks to burst due to severe temperature changes, and will also form an uncontrollable dead glass liquid area, which will affect the quality and normal production of the glass plate.

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