CN211255677U - Tin bath protective gas adjusting device - Google Patents
Tin bath protective gas adjusting device Download PDFInfo
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- CN211255677U CN211255677U CN201922285661.4U CN201922285661U CN211255677U CN 211255677 U CN211255677 U CN 211255677U CN 201922285661 U CN201922285661 U CN 201922285661U CN 211255677 U CN211255677 U CN 211255677U
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Abstract
The utility model discloses a molten tin bath protective gas adjusting device, include: the gas mixing system comprises a gas mixing main path and a plurality of gas mixing branches, wherein one ends of the gas mixing branches are respectively communicated with the gas mixing main path; one end of each pure nitrogen branch is communicated with the pure nitrogen main path; and each conveying branch is respectively communicated with the other end of a mixed gas branch and the other end of a pure nitrogen branch. The utility model discloses a nitrogen-hydrogen ratio is mixed to the second time to reach nitrogen-hydrogen ratio in the gas mixture of adjustable entering every section overhead guard, to float forming process, there is more accurate distribution mode, can improve the protective gas distribution of inslot space, optimized gas distribution system, all had certain benefit to production operation.
Description
Technical Field
The utility model relates to a technical field of float bath especially relates to a molten tin bath protective gas adjusting device.
Background
According to the description of page 235 of the 1 st edition of production process and defect control of flat glass, 2010, 12 th edition, Wuhan university Press, high-purity nitrogen and hydrogen produced by a nitrogen station and a hydrogen station are delivered to each part of a tin bath according to different proportions and distribution quantities through a gas distribution system before entering the tin bath. The protective gas is generally distributed in the tin bath according to the first, middle and last three zones.
According to the description of the Wuhan university of industry, Press, 1997, 8, 1 edition float glass, page 89, the tin bath space must be introduced with a reducing shielding gas to prevent oxidation of tin in order to keep the tin level smooth and clean for the glass forming needs.
According to the description of page 222 in the 1 st edition of flat glass production process and defect control of the university of wuhan theory of press, 2010, 12 months, the protective gas in the tin bath is a mixed gas consisting of nitrogen and hydrogen, and the protective gas mainly plays a role in increasing the gas pressure in the tin bath, preventing external air from entering tin oxide liquid in the tin bath, or reducing the tin oxide liquid through hydrogen after trace air enters the tin bath, so that the protective tin liquid is protected and is always kept in a relatively pure effect. Most of the protective gas enters the tin bath through three areas of the tin bath top cover according to different nitrogen-hydrogen ratios, and a small amount of pure nitrogen is used for sealing the edge seal of the tin bath, the observation hole, the inlet and the outlet of the tin bath.
According to field experience, the proportion of nitrogen in the nitrogen-hydrogen mixed gas entering the top cover is 92-96%, the proportion of hydrogen is about 4-8%, the demand of protective gas quantity at the outlet end is large at the inlet of the top cover, and the proportion of hydrogen is also large, so that a mechanism for independently adjusting the content and proportion of the nitrogen-hydrogen mixed gas entering the top cover is needed.
Referring to fig. 1, fig. 1 shows a conventional tin bath shielding gas adjusting apparatus, which mixes nitrogen and hydrogen in a tin bath shielding gas distribution chamber in a certain ratio and sends the mixture to a top cover, and then sends the mixture to the top cover in a subregion, so that the design is simple, the construction is convenient, the cost is low, but the disadvantages are obvious, and the nitrogen-hydrogen ratio in each region of the top cover can not be changed because the nitrogen-hydrogen ratio is only adjusted in the distribution chamber, so that the nitrogen-hydrogen ratio in each section of the top cover mixture can not be adjusted in a targeted manner in the actual production process.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a molten tin bath shielding gas adjusting device.
In order to achieve the purpose, the invention adopts the technical scheme that:
a molten tin bath shielding gas regulating device, comprising:
the gas mixing system comprises a gas mixing main path and a plurality of gas mixing branches, wherein one ends of the gas mixing branches are respectively communicated with the gas mixing main path;
the system comprises a pure nitrogen main path and a plurality of pure nitrogen branches, wherein one ends of the pure nitrogen branches are respectively communicated with the pure nitrogen main path;
and each conveying branch is respectively communicated with the other end of the mixed gas branch and the other end of the pure nitrogen branch.
In the molten tin bath protective gas regulating device, the plurality of conveying branches are respectively communicated with the inside of each section of the top cover of the molten tin bath top cover.
The molten tin bath protective gas adjusting device is characterized in that each mixed gas branch is sequentially provided with: the first ball valve, the first glass rotameter and the first stop valve.
The molten tin bath protective gas adjusting device is characterized in that each pure nitrogen branch is sequentially provided with: the second ball valve, the second glass rotameter and the second stop valve.
The utility model discloses owing to adopted above-mentioned technique, make it compare the positive effect that has with prior art and be:
(1) the utility model discloses a nitrogen-hydrogen ratio is mixed to the second time to reach nitrogen-hydrogen ratio in the gas mixture of adjustable entering every section overhead guard, to float forming process, there is more accurate distribution mode, can improve the protective gas distribution of inslot space, optimized gas distribution system, all had certain benefit to production operation.
Drawings
Fig. 1 is a schematic structural view of a conventional tin bath protective gas conditioning device.
Fig. 2 is a schematic structural diagram of the molten tin bath protective gas adjusting device of the present invention.
In the drawings: 1. a mixed gas main path; 2. a mixed gas branch; 21. a first ball valve; 22. a first glass rotameter; 23. a first shut-off valve; 3. a pure nitrogen main line; 4. a pure nitrogen branch; 41. a second ball valve; 42. a second glass rotameter; 43. a second stop valve; 5. a conveying branch.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 2 is a schematic structural diagram of the molten tin bath shielding gas adjusting device of the present invention, please refer to fig. 2, which shows a molten tin bath shielding gas adjusting device of a preferred embodiment, comprising: the gas mixing device comprises a gas mixing main path 1 and a plurality of gas mixing branches 2, wherein one ends of the gas mixing branches 2 are respectively communicated with the gas mixing main path 1. Mixing nitrogen and hydrogen in a gas distribution chamber of the tin bath protector according to a certain proportion to form mixed gas, and conveying the mixed gas to the top cover.
Further, as a preferred embodiment, the tin bath shielding gas adjusting device further includes: a pure nitrogen gas main path 3 and a plurality of pure nitrogen gas branches 4, wherein one end of each pure nitrogen gas branch 4 is respectively communicated with the pure nitrogen gas main path 3. Introducing one path of pure nitrogen for independently adjusting the nitrogen-hydrogen ratio in the mixed gas entering each section of top cover, and mixing the two paths of gas again and then entering the top cover. The secondary adjustment of the nitrogen-hydrogen ratio is carried out, so that the mixed gas of each top cover can be accurately adjusted and distributed.
Further, as a preferred embodiment, the tin bath shielding gas adjusting device further includes: and each conveying branch 5 is respectively communicated with the other end of the mixed gas branch 2 and the other end of the pure nitrogen branch 4.
Further, as a preferred embodiment, a plurality of delivery branches 5 are respectively communicated with the interior of each segment of the tin bath top cover.
The above description is only an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The utility model discloses still have following embodiment on above-mentioned basis:
the utility model discloses a further embodiment, all be equipped with in proper order on each gas mixture branch road 2: a first ball valve 21, a first glass rotameter 22 and a first shut-off valve 23.
The utility model discloses a further embodiment, all be equipped with in proper order on each pure nitrogen branch road 4: a second ball valve 41, a second glass rotameter 42 and a second shut-off valve 43.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (4)
1. A molten tin bath protective gas regulating device is characterized by comprising:
the gas mixing system comprises a gas mixing main path and a plurality of gas mixing branches, wherein one ends of the gas mixing branches are respectively communicated with the gas mixing main path;
the system comprises a pure nitrogen main path and a plurality of pure nitrogen branches, wherein one ends of the pure nitrogen branches are respectively communicated with the pure nitrogen main path;
and each conveying branch is respectively communicated with the other end of the mixed gas branch and the other end of the pure nitrogen branch.
2. A molten tin bath shielding gas regulating device according to claim 1, wherein a plurality of said delivery branches are respectively communicated with the inside of each segment of the tin bath top cover.
3. A molten tin bath shielding gas adjusting apparatus according to claim 1, wherein each of the mixed gas branches is provided with: the first ball valve, the first glass rotameter and the first stop valve.
4. A molten tin bath shielding gas adjusting apparatus according to claim 1, wherein each of the pure nitrogen branches is provided with: the second ball valve, the second glass rotameter and the second stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922285661.4U CN211255677U (en) | 2019-12-18 | 2019-12-18 | Tin bath protective gas adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922285661.4U CN211255677U (en) | 2019-12-18 | 2019-12-18 | Tin bath protective gas adjusting device |
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| CN211255677U true CN211255677U (en) | 2020-08-14 |
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| CN201922285661.4U Active CN211255677U (en) | 2019-12-18 | 2019-12-18 | Tin bath protective gas adjusting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794628A (en) * | 2021-01-14 | 2021-05-14 | 河北光兴半导体技术有限公司 | Tin bath device |
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2019
- 2019-12-18 CN CN201922285661.4U patent/CN211255677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794628A (en) * | 2021-01-14 | 2021-05-14 | 河北光兴半导体技术有限公司 | Tin bath device |
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