CN112159076A - Medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying - Google Patents
Medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying Download PDFInfo
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- CN112159076A CN112159076A CN202010923666.XA CN202010923666A CN112159076A CN 112159076 A CN112159076 A CN 112159076A CN 202010923666 A CN202010923666 A CN 202010923666A CN 112159076 A CN112159076 A CN 112159076A
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- borosilicate glass
- melting furnace
- neutral borosilicate
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/04—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in tank furnaces
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/182—Stirring devices; Homogenisation by moving the molten glass along fixed elements, e.g. deflectors, weirs, baffle plates
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/18—Stirring devices; Homogenisation
- C03B5/193—Stirring devices; Homogenisation using gas, e.g. bubblers
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention provides a medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying, wherein a row or a plurality of rows of bubbling systems are arranged at the bottom of the glass melting furnace; a discharging kiln bank is arranged at the downstream of the bubbling system; the bubbling system and the bubble discharging weir are arranged along the vertical direction of the longitudinal central line of the glass melting furnace; the middle of the bubble discharging kiln bank is provided with a perforated brick, the bottom of the bubble discharging kiln bank is provided with a kiln bank cushion brick, kiln bank tiling bricks are arranged on the two sides of the upper and lower positions of the perforated brick, a cooling water bag is placed in the middle of the perforated brick, and the homogenization and clarification of the medicinal neutral borosilicate glass liquid are realized by the bubbling system and the bubble discharging kiln bank together. Compared with the existing vertical stirring system of the melting furnace and the bubble discharging weir built by the inverted U-shaped bricks, the invention can effectively solve the problems of homogenization and subsequent clarification caused by higher viscosity of the medicinal neutral borosilicate glass liquid, and realizes the aims of energy conservation and efficiency improvement in the production process of the medicinal neutral borosilicate glass.
Description
Technical Field
The invention relates to the technical field of glass manufacturing, in particular to a medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying.
Background
According to the related medicine packaging standards issued by the State food and drug administration, the medicine packaging materials refer to packaging materials and containers which are in direct contact with medicines, and glass materials are widely used in the fields of biological products, injection and the like due to the advantages of high temperature resistance, easy disinfection, recoverability and the like. The glass materials related in the prodrug packaging material can be divided into borosilicate glass and soda-lime glass according to different components, and neutral borosilicate glass gradually replaces other types of packaging materials due to the advantages of small expansion coefficient, strong extreme cold and heat resistance, high mechanical strength, strong impact resistance, good chemical stability, high acid, alkali and water resistance and the like, so that the prodrug packaging material becomes a high-end biological product and an injection, and is particularly preferred for storing vaccines.
Silica and boron oxide act as glass former oxides, acting as a framework in the glass network structure. On the one hand, in the process of manufacturing neutral borosilicate glass, molten glass can be layered in a melting furnace due to different densities of raw materials such as silicon dioxide, boron oxide and the like, and the quality of a final product is influenced. On the other hand, although the neutral borosilicate glass has excellent performance, the bond energy between glass network structures is stronger due to the high content of boron and silicon, which is reflected in that the liquid phase viscosity of the glass liquid is higher at high temperature.
At present, the problem of glass liquid layering is solved by using a vertical stirring system in the manufacturing industry of other types of glass, but because the viscosity of neutral borosilicate glass liquid is higher, the stirring system is difficult to cover the whole melting furnace, so that the problem of glass liquid layering at the bottom of the melting furnace still cannot be solved. And the stirring rod of the existing stirring system is mostly made of platinum materials, so that the price is high, and the maintenance cost is very high. The high-viscosity glass liquid also enables the generated bubbles not to float upwards and be discharged by self, so that the glass liquid is difficult to transfer to a production line of neutral borosilicate glass.
Therefore, the medical neutral borosilicate glass melting furnace improves the existing glass liquid homogenizing technology on the basis of comprehensively considering the characteristics of glass liquid and the property requirements of related standards on medicine packaging materials, and provides a bubbling and bubble discharging mode to effectively improve the homogenizing and clarifying effects of the high-viscosity neutral borosilicate glass liquid and ensure the quality of a finished product.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying, wherein a row or a plurality of rows of bubbling systems are arranged at the bottom of the glass melting furnace; a discharging kiln bank is arranged at the downstream of the bubbling system; the bubbling system and the bubble discharging weir are arranged along the vertical direction of the longitudinal central line of the glass melting furnace; the middle of the bubble discharging kiln bank is provided with a perforated brick, the bottom of the bubble discharging kiln bank is provided with a kiln bank cushion brick, kiln bank tiling bricks are arranged on the two sides of the upper and lower positions of the perforated brick, a cooling water bag is placed in the middle of the perforated brick, and the homogenization and clarification of the medicinal neutral borosilicate glass liquid are realized by the bubbling system and the bubble discharging kiln bank together.
Preferably, the heating mode of the glass melting furnace is combustion heating or/and electric heating.
Preferably, suitable gases for the bubbling system are one or more of purified air, helium, carbon dioxide, nitrogen, oxygen, neon or argon.
Preferably, the cooling mode of the bubbling system is air cooling or/and liquid cooling.
Preferably, the width of the bubble discharge weir is 600mm-1400 mm.
Preferably, the perforated brick, the weir backing brick and the weir tile are made of one or more of zirconia corundum, clay, graphite, corundum or silicon carbide.
Preferably, the weir tile is wedge-shaped or/and arc-shaped.
Preferably, the material of the cooling water bag is heat-resistant stainless steel or/and heat-resistant copper alloy.
Preferably, the gap between the perforated brick and the cooling water drum is air-cooled.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the glass melting furnace forms an effective reaction zone due to the interception of the bubble discharge weir, and raw materials fed into the glass melting furnace can be fully heated and melted in the reaction zone and have corresponding melting reaction; a bubbling system at the bottom of the reaction zone blows a proper amount of purified gas into the molten glass, the rising bubbles push the peripheral molten glass to form a circulating flow with a higher speed, the internal convection of the molten glass around the bubbles and the external circulation of the molten glass in the whole reaction zone are strengthened, the sufficient mixing and heat exchange of the molten glass at the bottom, the middle and the surface layer are enhanced, and the effective homogenization of the molten glass is realized; the bubble discharging weir aims at controlling the flow rate of the glass liquid and increasing the specific surface area of the glass liquid, on one hand, the glass liquid is promoted to be fully heated on the upper surface of the bubble discharging weir, on the other hand, residual fine bubbles in the liquid can be discharged in time, so that the clarification of the glass liquid is completed while the homogenization effect of the glass liquid is ensured, and the clarification quality of the glass liquid is improved. Compared with the existing vertical stirring technology, the bubbling system does not need to use a large amount of platinum materials, can effectively reduce the construction and maintenance cost of the production line, and effectively saves power and energy compared with a stirring system; in addition, compared with a stirring system, the glass melting furnace using the bubbling system does not need to discharge the glass liquid which is not completely homogenized at the bottom of the glass melting furnace, so that the production efficiency is obviously improved; different with using the type of falling U brick to build row's bubble kiln bank among other technologies, it is often limited to build row's bubble kiln bank by the type of falling U brick width, generally can not exceed 700mm, and the cooling hole of its centre can restrict the cooling effect of cooling water drum slightly for a short time, and can design the row's bubble kiln bank of adjustment width by oneself according to specific needs in this application on the one hand can make full use of cooling system promote row's bubble kiln bank life-span itself, on the other hand effectively increases glass liquid specific surface area and also is favorable to promoting glass production quality.
Drawings
FIG. 1 is a schematic partial plan view of example 1 of the present invention;
FIG. 2 is a schematic partial elevational view of embodiment 1 of the present invention;
wherein the reference numerals are: a bubbling system 1; discharging the foam kiln ridge 2; 3, pool wall bricks; medicinal neutral borosilicate glass liquid 4; a perforated brick 5; a kiln ridge cushion brick 6; a kiln ridge tile 7; and a cooling water bag 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a pharmaceutical neutral borosilicate glass melting furnace capable of homogenizing and clarifying, the glass melting furnace is full oxygen combustion-supporting + electric auxiliary heating, a row of water-cooled bubbling systems 1 is arranged at the bottom of a tank at the hot point of the glass melting furnace, and the medium is oxygen with the purity of 99%; the downstream of the bubbling system 1 is provided with a bubble discharging weir 2 with the width of 600mm-1400mm, the molten neutral borosilicate glass liquid 4 is positioned in a melting tank surrounded by tank wall bricks 3, the middle of the bubble discharging weir 2 is provided with a perforated brick 5, the bottom of the bubble discharging weir 2 is provided with a weir pad brick 6, the upstream and downstream sides of the perforated brick 5 are both provided with weir tiles 7 with wedge-shaped appearances, the middle of the perforated brick 5 is provided with a cooling water drum 8, namely, the bubble discharging weir 2 is formed by combining three electric melting high zirconium bricks made of zirconia corundum materials, the middle of the bubble discharging weir is cooled by using a water cooling and air cooling combination mode, the weir tiles 7 can play a role in protecting the structural stability of the bubble discharging weir 2, and effectively avoid the formation of devitrification in a retention area by the glass liquid flow to cause glass defects; the bubbling system 1 and the bubble discharge weir 2 are arranged along the vertical direction of the longitudinal central line of the glass melting furnace, and the homogenization and clarification of the medicinal neutral borosilicate glass liquid are realized by the bubbling system 1 and the bubble discharge weir 2 together.
The diameter of the medical neutral borosilicate glass tube product produced by the glass melting furnace is 4mm-40mm, the total product rate is higher than 95 percent, and the expansion coefficient is 5.0 multiplied by 10-6K-1And the quality is excellent.
In conclusion, the glass melting furnace forms an effective reaction zone due to the interception of the bubble discharge weir, and raw materials fed into the glass melting furnace can be fully heated and melted in the reaction zone and have corresponding melting reaction; a bubbling system at the bottom of the reaction zone blows a proper amount of purified gas into the molten glass, the rising bubbles push the peripheral molten glass to form a circulating flow with a higher speed, the internal convection of the molten glass around the bubbles and the external circulation of the molten glass in the whole reaction zone are strengthened, the sufficient mixing and heat exchange of the molten glass at the bottom, the middle and the surface layer are enhanced, and the effective homogenization of the molten glass is realized; the bubble discharging weir aims at controlling the flow rate of the glass liquid and increasing the specific surface area of the glass liquid, on one hand, the glass liquid is promoted to be fully heated on the upper surface of the bubble discharging weir, on the other hand, residual fine bubbles in the liquid can be discharged in time, so that the clarification of the glass liquid is completed while the homogenization effect of the glass liquid is ensured, and the clarification quality of the glass liquid is improved. Compared with the prior vertical stirring technology, the bubbling system does not need to use a large amount of platinum materials, can effectively reduce the construction and maintenance cost of a production line, and effectively saves power and energy compared with a stirring system; different with using the type of falling U brick to build row's bubble kiln bank among other technologies, it is often limited to build row's bubble kiln bank by the type of falling U brick width, generally can not exceed 700mm, and the cooling hole of its centre can restrict the cooling effect of cooling water drum slightly for a short time, and can design the row's bubble kiln bank of adjustment width by oneself according to specific needs in this application on the one hand can make full use of cooling system promote row's bubble kiln bank life-span itself, on the other hand effectively increases glass liquid specific surface area and also is favorable to promoting glass production quality.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying is characterized in that a row or a plurality of rows of bubbling systems are arranged at the bottom of the glass melting furnace; a discharging kiln bank is arranged at the downstream of the bubbling system; the bubbling system and the bubble discharging weir are arranged along the vertical direction of the longitudinal central line of the glass melting furnace; the kiln ridge brick structure is characterized in that a perforated brick is arranged in the middle of the foam discharging kiln ridge, kiln ridge cushion bricks are arranged at the bottom of the foam discharging kiln ridge, kiln ridge tile bricks are arranged on the two sides of the upper portion and the lower portion of the perforated brick, and a cooling water bag is placed in the middle of the perforated brick.
2. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the glass melter is heated by combustion heating or/and electrical heating.
3. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the suitable gas for the bubbling system is one or more of purified air, helium, carbon dioxide, nitrogen, oxygen, neon, or argon.
4. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the cooling of the bubbling system is air cooled or/and liquid cooled.
5. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the perforated brick, the weir pad brick and the weir tile are made of one or more of zirconia alumina, clay, graphite, corundum or silicon carbide.
6. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the weir tiles are wedge-shaped and/or arc-shaped.
7. The pharmaceutical neutral borosilicate glass melting furnace according to claim 1, wherein the cooling water bag is made of heat-resistant stainless steel or/and heat-resistant copper alloy.
8. The pharmaceutical neutral borosilicate glass melter of claim 1 wherein the gap between the perforated brick and the cooling water drum is air cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923666.XA CN112159076A (en) | 2020-09-04 | 2020-09-04 | Medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010923666.XA CN112159076A (en) | 2020-09-04 | 2020-09-04 | Medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying |
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| Publication Number | Publication Date |
|---|---|
| CN112159076A true CN112159076A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010923666.XA Pending CN112159076A (en) | 2020-09-04 | 2020-09-04 | Medical neutral borosilicate glass melting furnace capable of homogenizing and clarifying |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1060033A (en) * | 1964-01-03 | 1967-02-22 | Saint Gobain | Improvements in or relating to the manufacture of glass |
| US4932035A (en) * | 1987-05-30 | 1990-06-05 | Sorg Gmbh & Co. Kg | Discontinuous glass melting furnace |
| CN203033875U (en) * | 2012-12-21 | 2013-07-03 | 彩虹集团电子股份有限公司 | Kiln ridge device of ultra-white glass kiln |
| CN108975655A (en) * | 2018-09-10 | 2018-12-11 | 中国建材国际工程集团有限公司 | A kind of rolled glass melting furnaces suitable for producing coloured glass |
| CN109111085A (en) * | 2018-09-19 | 2019-01-01 | 彩虹（合肥）光伏有限公司 | A kind of novel glass kiln weir structure |
-
2020
- 2020-09-04 CN CN202010923666.XA patent/CN112159076A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1060033A (en) * | 1964-01-03 | 1967-02-22 | Saint Gobain | Improvements in or relating to the manufacture of glass |
| US4932035A (en) * | 1987-05-30 | 1990-06-05 | Sorg Gmbh & Co. Kg | Discontinuous glass melting furnace |
| CN203033875U (en) * | 2012-12-21 | 2013-07-03 | 彩虹集团电子股份有限公司 | Kiln ridge device of ultra-white glass kiln |
| CN108975655A (en) * | 2018-09-10 | 2018-12-11 | 中国建材国际工程集团有限公司 | A kind of rolled glass melting furnaces suitable for producing coloured glass |
| CN109111085A (en) * | 2018-09-19 | 2019-01-01 | 彩虹（合肥）光伏有限公司 | A kind of novel glass kiln weir structure |
Non-Patent Citations (1)
| Title |
|---|
| 田英良: "《新编玻璃工艺学》", 中国轻工业出版社, pages: 317 - 320 * |
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