Apparatus for eliminating heterogeneous glass and glass manufacturing apparatus comprising the same

Patent metadata

Field	Value
Publication number	US-9862631-B2
Application number	US-201414426909-A
Country	US
Kind code	B2
Filing date	Sep 3, 2014
Priority date	Sep 3, 2013
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

The present disclosure provides an apparatus for eliminating a heterogeneous glass present in the top surface of a molten glass effectively, and a melting furnace and a glass manufacturing apparatus comprising the same. The apparatus for eliminating a heterogeneous glass according to one aspect of the present disclosure comprises a storage bath having an inlet and an outlet to receive a molten glass fed into the inlet and to discharge the received molten glass through the outlet, and an evacuating opening formed on the top of the storage bath, the evacuating opening allowing the received molten glass to overflow; a first gate being mounted close to the outlet of the storage bath to adjust an open area, thereby controlling the flow rate of the molten glass to be discharged through the outlet; and a second gate being mounted close to the inlet of the storage bath to control the height of the molten glass received in the storage bath at the section in which the evacuating opening is formed.

First claim

What is claimed is:

1. An apparatus for eliminating a heterogeneous glass, comprising:
a storage bath having an inlet to receive a molten glass fed into the inlet and an outlet to discharge the received molten glass through the outlet, and an evacuating opening formed on a top of the storage bath, the evacuating opening located in a section between a first gate and a second gate, the evacuating opening positioned below the top surface of the molten glass maintained between the first gate and the second gate and configured to allow the received molten glass to overflow and eliminate heterogeneous glass on the top surface thereof;
the first gate being mounted on an outlet side of the section and configured to move up and down so that the gate can open and close so that a distance between a lower end of the first gate and a bottom of the storage bath can be adjusted to thereby control the flow rate of the molten glass to be discharged through the outlet;
the second gate being mounted on an inlet side of the section, the second gate having a bottom that can be inserted in the molten glass, and the second gate having rounded bottom corners, the second gate being configured to move up and down so that the gate can open and close so that the height of the molten glass received in the storage bath can be controlled in the section where the evacuating opening is located, the second gate configured to maintain the height of the molten glass received in the storage bath in the section where the evacuating opening is located between the first gate and second gate at a constant value or within a constant range whereby an overflow rate through the evacuating opening can be constantly maintained thereby eliminating the heterogenous glass even if operation conditions of a melting furnace producing the molten glass or properties of the molten glass are changed; and
a height-measuring unit for measuring the height of the molten glass received in the storage bath at the section in which the evacuating opening is formed, the height-measuring unit transferring an information of the height measurement to the second gate,
wherein the second gate is controlled to operate using the information transferred by the height-measuring unit and configured to move upwardly or downwardly such that the double length of the depth of the second gate inserted in the molten glass at the side in which the evacuating opening is positioned is less than a horizontal distance between the second gate and the evacuating opening.

2. The apparatus for eliminating a heterogeneous glass according to claim 1 , wherein the second gate is configured to increase an open area when it moves upwardly from the bottom.

3. The apparatus for eliminating a heterogeneous glass according to claim 1 , wherein the second gate is made of a refractory material.

4. The apparatus for eliminating a heterogeneous glass according to claim 1 , wherein the second gate is surface-coated with platinum.

5. A glass melting furnace, comprising the apparatus for eliminating a heterogeneous glass according to claim 1 .

6. A glass manufacturing apparatus, comprising the apparatus for eliminating a heterogeneous glass according claim 1 .

Assignees

• Lg Chemical Ltd

Inventors

• Min Kyoung-Hoon
• Im Ye-Hoon
• Moon Won-Jae
• Lee Ji-Seob

Classifications

• C03B5/18 Primary

  Stirring devices; Homogenisation {(mixing in general B01F)} · CPC title

• C03B5/245

  Regulating the melt or batch level, depth or thickness · CPC title

• C03B5/267

  specially adapted for supplying the float tank · CPC title

• Y02P40/57

  Improving the yield, e-g- reduction of reject rates · CPC title

• C03B5/262

  Drains, i.e. means to dump glass melt or remove unwanted materials · CPC title