Delivery tube structure of molten glass

Abstract

The invention provides a delivery tube structure of molten glass, which can prevent the molten glass effused from a joint part between electric-melting bricks which form the delivery tube from corroding refractory bricks which form a lining material. The delivery tube structure of the molten glass is characterized in that the delivery tube structure comprises a delivery tube formed by a hollow pipe which is prepared from the electric-melting bricks and the lining material which is prepared from the refractory bricks distributed around the delivery tube; a barrier layer, which is manufactured from a metal material with excellent heat resistance and excellent corrosion resistance to the molten glass, is arranged between the delivery tube which is prepared from the electric-melting bricks and the lining material which is prepared from the refractory bricks. The invention also provides a pressure-reducing and de-foaming device, a glass manufacturing device and a method for manufacturing the molten glass by utilizing the delivery tube structure.

Description

technical field [0001] The invention relates to a conduit structure for molten glass. The conduit structure for molten glass of the present invention can be used as a conduit for molten glass in a glass manufacturing apparatus, for example, as a vacuum degassing tank, riser, or downcomer of a vacuum degassing apparatus. The conduit structure for molten glass of the present invention is suitable as a riser or a downcomer of a vacuum degassing device. [0002] In addition, the present invention also relates to a conduit for molten glass, and particularly relates to a vacuum degassing device and a vacuum degassing method using the conduit structure as a riser or a downcomer of the vacuum degassing device. [0003] Moreover, this invention also relates to the glass manufacturing apparatus which used this conduit structure as a conduit for molten glass. Background technique [0004] In a glass manufacturing apparatus such as a vacuum degassing apparatus, refractory bricks may b...

AI Technical Summary

Problems solved by technology

However, the general joint filling material has poor density compared with the electric fused brick, so compared with the electric fusion brick, the joint filling material that is in direct contact with the molten glass is easily corroded

Therefore, there is a problem that even if the corrosion of the fused brick itself is small, the corrosion of the joint between the fused bricks will selectively develop.

Therefore, although the time for the molten glass seeping out from the seam to reach the lining material is delayed compared with the case where no compacting material is used, the molten glass seeping out from the joint after the tamping material is corroded will reach the lining

[0015] In addition, in the invention described in Patent Document 1, the gap between adjacent bricks is reduced to 1 mm or less by precisely grinding the contact surfaces of the bricks in the inner surface brick layer, thereby delaying the seepage of molten glass from the joint, and expecting the seepage However, since the initial dense structure, that is, the gap of the joint, may gradually expand due to the gradual corrosion of the bricks around the joint.

Therefore, in the case of long-term observation, the leakage of molten glass from the seam cannot be completely prevented.

[0016] On the other hand, in the invention described in Patent Document 2, the corrosion of the joint is minimized by forming the joint at the corner where the flow velocity of the molten glass is slow, and the cooling unit is provided on the outer side of the joint. To prevent the seepage of molten glass from the joint, however, even in the corner where the flow rate of molten glass is slow, the bricks around the joint will be gradually corroded by the molten glass

As a result, the gap at the joint gradually expands, and eventually molten glass may seep out from the joint.

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