CN113698074A - Preparation process of optical glass with low bubble rate and high refractive index - Google Patents
Preparation process of optical glass with low bubble rate and high refractive index Download PDFInfo
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- CN113698074A CN113698074A CN202110698920.5A CN202110698920A CN113698074A CN 113698074 A CN113698074 A CN 113698074A CN 202110698920 A CN202110698920 A CN 202110698920A CN 113698074 A CN113698074 A CN 113698074A
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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
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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Abstract
The invention discloses a process for preparing optical glass with low bubble rate and high refractive index, which belongs to the field of optical glass, and the process for preparing the optical glass with low bubble rate and high refractive index comprises the steps of putting a radial moving ball into a melting material in the melting process, matching with the guiding action of an external magnetic field, enabling the radial moving ball to move in the melting material, generating a cutting effect on bubbles when contacting the bubbles, and enabling the air in the bubbles to overflow upwards, compared with the mode of mechanically stirring and removing the bubbles in the prior art, stirring the internal of the melting material, effectively avoiding the condition of introducing external air, obviously improving the refractive index of the optical glass, and under the arrangement of a radial moving rod, when the radial moving ball moves under the action of gravity, the radial moving rod moves on the radial moving ball, thereby radially and outwards expanding the cutting range of an outer temperature-resistant layer on the bubbles, the bubble removal efficiency is remarkably improved.
Description
Technical Field
The invention relates to the field of optical glass, in particular to a preparation process of optical glass with low bubble rate and high refractive index.
Background
Optical glasses are glasses that change the direction of light propagation and change the relative spectral distribution of ultraviolet, visible, or infrared light. Optical glass in the narrow sense means colorless optical glass; the optical glass in a broad sense also includes colored optical glass, laser glass, quartz optical glass, radiation-resistant glass, ultraviolet infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optic glass and photochromic glass. The optical glass can be used for manufacturing lenses, prisms, reflectors, windows and the like in optical instruments. Components made of optical glass are critical elements in optical instruments.
In the prior art, when optical glass is produced, in a smelting process, in order to remove bubbles in a molten material and ensure the refractive index of a finished product, the molten material is often required to be stirred in the smelting process, but the mechanical stirring difficulty is high due to overhigh temperature in a smelting furnace, external air is often introduced into the mechanical stirring, the air in the molten material cannot be effectively removed, and the refractive index of the finished product is not ideal.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a process for preparing optical glass with low bubble rate and high refractive index, which comprises the steps of putting a radioactive moving ball into a molten material in the melting process, enabling the radioactive moving ball to move in the molten material under the guiding action of an external magnetic field, and when contacting bubbles, can generate cutting effect on the air bubbles to ensure that the air in the air bubbles overflows upwards, compared with the mode of removing the air bubbles by mechanical stirring in the prior art, the stirring is realized in the molten material, the condition of introducing external air is effectively avoided, the refractive index of the optical glass is obviously improved, in addition, under the arrangement of the radioactive moving rod, the radioactive moving rod moves on the radioactive moving ball under the action of gravity when the radioactive moving ball moves, therefore, the cutting range of the outer temperature-resistant layer to the bubbles can be radially expanded outwards, and the bubble removal efficiency is obviously improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation process of optical glass with low bubble rate and high refractive index comprises the following steps:
s1, melting the raw materials of the optical glass at the temperature of 1400-1450 ℃ to obtain molten materials, and then putting the molten materials into a smelting furnace for smelting;
s2, throwing a radial moving ball into the molten material in the smelting process, wherein the radial moving ball continuously sinks in the molten material, so that bubbles in the molten material are cut, and the air in the bubbles floats upwards and overflows;
s3, externally applying a magnetic field outside the smelting furnace, and controlling the radial moving balls to sink and float in the molten material at intervals to cut bubbles in a large range;
and S4, pouring the smelted materials into a mold, annealing, and naturally cooling to form the optical glass.
Further, the smelting process lasts for 4-7h, and the sinking and floating interval of the radial dynamic ball in the molten material is controlled to be not more than 30min every two times in the step S3.
Furthermore, after the optical glass is molded, the part of the optical glass obviously containing more bubbles is mechanically cut off.
Furthermore, the radial moving ball comprises an outer temperature-resistant layer, the outer temperature-resistant layer is of a hollow structure, an inner heat insulation layer is attached to the inner wall of the outer temperature-resistant layer, a radial moving rod is movably inserted on the outer temperature-resistant layer, a magnetic push ring is arranged at the joint of the radial moving rod and the outer temperature-resistant layer, when the radial moving ball is put into a molten material, firstly, in the process of sinking down or under the control of an external magnetic field, when the radial moving ball is contacted with bubbles, a cutting effect can be generated on the bubbles, so that the air in the radial moving ball overflows upwards, compared with a mode of mechanically stirring and removing the bubbles in the prior art, the radial moving ball realizes stirring in the molten material, the condition of introducing external air is effectively avoided, the refractive index of optical glass is obviously improved, meanwhile, the stirring mode is simpler, the preparation efficiency of the optical glass is improved, and the arrangement of the radial moving rod radially expands the cutting range of the outer temperature-resistant layer to the bubbles outwards, the bubble removal efficiency is remarkably improved.
Furthermore, the magnetic push ring comprises a plurality of magnetic push rods which are distributed in an annular shape, each magnetic push rod comprises a support rod fixedly connected with the inner heat insulation layer and an outward push ball fixedly connected to the end part of the support rod, and the inner diameter of the ring formed by the outward push balls is larger than the diameter of the radiation moving rod, so that the magnetic push ring is not easy to influence the movement of the radiation moving rod on the outer temperature-resistant layer.
Furthermore, the outer temperature-resistant layer is made of a high-temperature ceramic material, the high-temperature ceramic material can resist the high temperature of 1700 ℃, so that the high-temperature ceramic material can maintain a relatively stable state under the high-temperature action in the smelting furnace, the cutting action of the high-temperature ceramic material on bubbles in molten materials is effectively ensured, the double-penetration moving rod and the inner heat-insulating layer are made of foamed ceramic materials, the foamed ceramic can normally work at 1600 ℃, the high temperature of the double-penetration moving rod is not easily introduced into the outer temperature-resistant layer when the double-penetration moving rod moves, meanwhile, the outer high temperature is effectively isolated by the inner heat-insulating layer, and the bidirectional moving ball and the inner temperature-resistant layer can keep a relatively stable state.
Furthermore, the radioactive moving rod comprises a double-penetration moving rod and a double-direction moving ball, wherein the two ends of the double-penetration moving rod penetrate through the outer temperature-resistant layer and the inner heat-insulating layer, the two-direction moving ball is fixedly connected to the middle of the double-penetration moving rod, the outer end of the double-direction moving ball and the outer end of the outer push ball, which faces the center of the outer temperature-resistant layer, are fixedly connected with magnetic sheets, the magnetic sheets on the double-direction moving ball and the outer push ball repel each other, the radioactive moving ball can move on the outer temperature-resistant layer due to the action of gravity and the action of a magnetic field in the moving process, and when the double-direction moving ball is close to the magnetic push ring, the magnetic push ring generates repulsive force to the magnetic push ring, so that the radioactive moving rod generates certain reverse motion, and the cutting effect of the radioactive moving rod on bubbles is better.
Further, two adjacent two run through move the pole and be located the minimum distance of outer temperature resistant layer internal portion and be greater than two-way moving ball diameter, make the radiation move the pole and be difficult for causing mutual blockking because of two-way moving balls in the removal on the temperature resistant layer outward, effectively guarantee that two run through move the pole and can move in great scope, make the getting rid of the cutting effect to the bubble better.
Furthermore, the bidirectional moving ball is of a hollow structure, a plurality of counterweight particles are filled in the bidirectional moving ball, and the counterweight particles are used as counterweights, so that the gravity of the bidirectional moving ball is larger, and the radial moving rod can move more conveniently under the condition that the radial moving ball moves.
Furthermore, the radioactive moving rod comprises a semi-through moving rod movably penetrating through the outer temperature-resistant layer and the inner heat insulation layer and a one-way moving ball fixed at the inner end part of the semi-through moving rod positioned on the outer temperature-resistant layer, the structure of the one-way moving ball is consistent with that of the two-way moving ball, and compared with the direct completely-through radioactive moving rod, the semi-through radioactive moving rod is stronger in mobility and wider in range of cutting bubbles by external radiation.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through throwing the radiation movable ball in melting material in the melting process, the guide effect of cooperation external magnetic field, make the radiation movable ball remove in the melting material, when contacting the bubble, can produce the cutting effect to the bubble, make its inside air upwards spill over, compare the mode that removes the bubble in the mechanical stirring among the prior art, it realizes its stirring to it inside the melting material, the condition of effectively avoiding introducing outside air takes place, show improvement optical glass's refracting index, in addition under the setting of radiation movable rod, the radiation movable rod is under the action of gravity, when the radiation movable ball removes, the radiation movable rod removes on the radiation movable ball, thereby can be radial outside and enlarge the cutting scope of outer temperature-resistant layer to the bubble, show the efficiency of getting rid of improvement bubble.
(2) The radial moving ball comprises an outer temperature-resistant layer, the outer temperature-resistant layer is of a hollow structure, an inner heat insulation layer is attached to the inner wall of the outer temperature-resistant layer, a radial moving rod is movably inserted on the outer temperature-resistant layer, a magnetic push ring is arranged at the joint of the radial moving rod and the outer temperature-resistant layer, when the radial moving ball is put into a melting material, firstly, the radial moving ball can generate a cutting effect on bubbles in the sinking process or under the control of an external magnetic field when contacting the bubbles, so that the air in the radial moving ball overflows upwards, compared with the mode of mechanically stirring and removing the bubbles in the prior art, the radial moving ball realizes stirring in the melting material, effectively avoids the introduction of external air, obviously improves the refractive index of optical glass, is simpler in stirring mode, improves the preparation efficiency of the optical glass, and radially expands the cutting range of the outer temperature-resistant layer on the bubbles outwards, the bubble removal efficiency is remarkably improved.
(3) The magnetic push ring comprises a plurality of magnetic push rods which are distributed in a ring shape, the magnetic push rods comprise support rods fixedly connected with the inner heat insulation layer and outer push balls fixedly connected to the end parts of the support rods, and the inner diameter of the ring formed by the plurality of outer push balls is larger than the diameter of the radiation moving rod, so that the magnetic push ring is not easy to influence the movement of the radiation moving rod on the outer temperature-resistant layer.
(4) The outer temperature-resistant layer is made of a high-temperature ceramic material, the high-temperature ceramic material can resist the high temperature of 1700 ℃, so that the high-temperature ceramic material can maintain a relatively stable state under the high-temperature action in a smelting furnace, the cutting action of the high-temperature ceramic material on bubbles in molten materials is effectively ensured, the double-penetration moving rod and the inner heat-insulating layer are made of foamed ceramic materials, the foamed ceramic can normally work at 1600 ℃, the double-penetration moving rod is not easy to introduce the high temperature into the outer temperature-resistant layer when moving, and meanwhile, the inner heat-insulating layer effectively isolates the external high temperature, so that the outer temperature-resistant layer and the bidirectional moving ball can maintain a relatively stable state.
(5) The radioactive moving rod comprises a double-penetration moving rod and a bidirectional moving ball, wherein the two ends of the double-penetration moving rod penetrate through the outer temperature-resistant layer and the inner heat-insulating layer in a movable mode, the bidirectional moving ball is fixedly connected to the middle of the double-penetration moving rod, the outer end of the bidirectional moving ball and the outer end, facing the center of the outer temperature-resistant layer, of the outer push ball are fixedly connected with magnetic sheets, the magnetic sheets on the bidirectional moving ball and the outer push ball repel each other, the radioactive moving ball moves on the outer temperature-resistant layer due to the action of gravity and the action force of a magnetic field in the moving process, the double-penetration moving rod can move on the outer temperature-resistant layer, when the bidirectional moving ball is close to the magnetic push ring, the magnetic push ring generates repulsive force to the magnetic push ring, the magnetic push ring generates certain reverse motion, and the cutting effect of the radioactive moving rod on bubbles is better.
(6) The minimum distance that two adjacent two run-through move the pole and be located outer temperature resistant layer internal portion is greater than two-way moving ball diameter, makes the radiation move the pole and is difficult for causing mutual blockking because of two-way moving balls on outer temperature resistant layer, effectively guarantees that two run-through move the pole and can remove in great range, makes the getting rid of the cutting effect to the bubble better.
(7) The bidirectional moving ball is of a hollow structure, a plurality of counterweight particles are filled in the bidirectional moving ball, and the counterweight particles are used as counterweights, so that the gravity of the bidirectional moving ball is larger, and the movement of the radioactive moving rod is more beneficial to falling under the condition that the radioactive moving ball moves.
(8) The radioactive moving rod comprises a semi-through moving rod movably penetrating through the outer temperature-resistant layer and the inner heat insulation layer and a unidirectional moving ball fixed at the inner end part of the semi-through moving rod positioned in the outer temperature-resistant layer, the unidirectional moving ball structure is consistent with the bidirectional moving ball structure, and compared with a direct completely-through radioactive moving rod, the semi-through radioactive moving rod is stronger in activity and wider in range of cutting bubbles by external radiation.
Drawings
FIG. 1 is a principal flow diagram of the present invention;
FIG. 2 is a schematic view of the structure of the radial moving ball of the present invention;
FIG. 3 is a schematic structural view of a radial moving ball section of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic structural diagram of a magnetic push ring according to the present invention;
FIG. 6 is a schematic structural view of a middle portion of a discharge rod in embodiment 1 of the present invention;
FIG. 7 is a schematic structural view of a radial ball according to embodiment 2 of the present invention;
fig. 8 is a block diagram of a main flow of the prior art.
The reference numbers in the figures illustrate:
the heat insulation device comprises an outer temperature resistant layer 1, a double through moving rod 2, an inner heat insulation layer 3, an outer pushing ball 41, a support rod 42, a bidirectional moving ball 5, a magnetic sheet 6, a counterweight particle 7, a semi-through moving rod 8 and a unidirectional moving ball 9.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a process for preparing optical glass with low bubble rate and high refractive index includes the following steps:
s1, melting the raw materials of the optical glass at the temperature of 1400-1450 ℃ to obtain molten materials, and then putting the molten materials into a smelting furnace for smelting;
s2, throwing a radial moving ball into the molten material in the smelting process, wherein the radial moving ball continuously sinks in the molten material, so that bubbles in the molten material are cut, and the air in the bubbles floats upwards and overflows;
s3, externally applying a magnetic field outside the smelting furnace, and controlling the radial moving balls to sink and float in the molten material at intervals to cut bubbles in a large range;
and S4, pouring the smelted materials into a mold, annealing, and naturally cooling to form the optical glass.
The smelting process lasts for 4-7h, the sinking and floating intervals of the radial dynamic ball in the molten material are controlled to be not more than 30min every two times in the step S3, and after the optical glass is formed, the part of the optical glass obviously containing more bubbles is mechanically cut off.
Referring to fig. 2-3, the radial moving ball includes an outer temperature-resistant layer 1, the outer temperature-resistant layer 1 is a hollow structure, an inner heat-insulating layer 3 is attached to the inner wall of the outer temperature-resistant layer 1, the outer temperature-resistant layer 1 is made of a high-temperature ceramic material, the high-temperature ceramic material can resist a high temperature of 1700 ℃, so that the high-temperature ceramic material can maintain a relatively stable state under the high-temperature action in a smelting furnace, the cutting action of the high-temperature ceramic material on bubbles in a molten material is effectively ensured, the dual through moving rod 2 and the inner heat-insulating layer 3 are made of a foamed ceramic material, the foamed ceramic can normally work at 1600 ℃, the high temperature is not easily introduced into the outer temperature-resistant layer 1 when the dual through moving rod 2 moves, the heat-insulating layer 3 effectively isolates the external high temperature, so that the inner heat-insulating layer 4 in the outer temperature-resistant layer 1 and the bidirectional moving ball 5 can maintain a relatively stable state, the radial moving rod is movably inserted in the outer temperature-resistant layer 1, a magnetic push ring is arranged at the connection position of the radial moving rod and the outer temperature-resistant layer 1, when the radial moving ball is put into the molten material, firstly, the radial moving ball sinks in the process or under the control of an external magnetic field, when the radial moving ball contacts with bubbles, the cutting effect can be generated on the bubbles, so that the air in the radial moving ball overflows upwards, compared with a mode of mechanically stirring to remove the bubbles in the prior art, the radial moving ball stirs the molten material in the interior, the condition of introducing the external air is effectively avoided, the refractive index of the optical glass is obviously improved, meanwhile, the stirring mode is simpler, the preparation efficiency of the optical glass is improved, in addition, the arrangement of the radial moving rod radially expands the cutting range of the outer temperature-resistant layer 1 to the bubbles, and the removal efficiency of the bubbles is obviously improved.
Referring to fig. 4-5, the magnetic push ring includes a plurality of magnetic push rods distributed in a ring shape, the magnetic push rods include a support rod 42 fixedly connected to the inner heat insulation layer 3 and an outer push ball 41 fixedly connected to an end of the support rod 42, and an inner diameter of the ring surrounded by the outer push balls 41 is larger than a diameter of the radial moving rod, so that the magnetic push ring is not easily influenced by the movement of the radial moving rod on the outer temperature-resistant layer 1.
Referring to fig. 6, the radioactivity rod comprises a dual penetrating rod 2 with two ends movably penetrating through the outer temperature-resistant layer 1 and the inner heat-insulating layer 3 and a dual moving ball 5 fixedly connected to the middle of the dual penetrating rod 2, the outer end of the dual moving ball 5 and the outer end of the outer pushing ball 41 facing the center of the outer temperature-resistant layer 1 are fixedly connected with magnetic sheets 6, the dual moving ball 5 and the magnetic sheets 6 on the outer pushing ball 41 repel each other, the radioactivity ball can move on the outer temperature-resistant layer 1 due to the action of gravity and the action force of a magnetic field during the moving process, and when the dual moving ball 5 approaches the magnetic pushing ring, the magnetic pushing ring generates a repulsive force to the magnetic pushing ring, so that the magnetic pushing ring generates a certain reverse motion, and the radioactivity rod has a better bubble cutting effect.
Two adjacent two run through move pole 2 and lie in outer temperature resistant layer 1 internal portion's minimum distance and be greater than two-way moving ball 5 diameters, make the radiation move pole be difficult for causing mutual blockking because of two-way moving balls 5 on outer temperature resistant layer 1, effectively guarantee that two run through move pole 2 can move in great within range, make the cutting effect of getting rid of to the bubble better, two-way moving ball 5 is hollow structure, and two-way moving ball 5 intussuseptions are filled with a plurality of counter weight granules 7, counter weight granule 7 is as the counter weight, make its gravity great, move the ball removal condition in the radiation, the removal of radiation move pole is more sharp-falling.
In addition, under the arrangement of the radioactive moving rod, the radioactive moving rod moves on the radioactive moving ball under the action of gravity when the radioactive moving ball moves, so that the cutting range of the outer temperature-resistant layer 1 to the bubbles can be radially expanded outwards, and the removal efficiency of the bubbles is obviously improved.
Example 2:
the radioactive moving rod comprises a semi-through moving rod 8 movably penetrating through the outer temperature-resistant layer 1 and the inner heat insulation layer 3 and a one-way moving ball 9 fixed at the inner end part of the semi-through moving rod 8 positioned in the outer temperature-resistant layer 1, the structure of the one-way moving ball 9 is consistent with that of the two-way moving ball 5, compared with the radioactive moving rod directly penetrating completely, the radioactive moving rod of the semi-through type has stronger activity, and the range of cutting bubbles by external radiation is wider.
The construction of the radioactivity rod was not changed from that of example 1, and the rest of the construction was the same as that of example 1.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. A preparation process of optical glass with low bubble rate and high refractive index is characterized in that: the method comprises the following steps:
s1, melting the raw materials of the optical glass at the temperature of 1400-1450 ℃ to obtain molten materials, and then putting the molten materials into a smelting furnace for smelting;
s2, throwing a radial moving ball into the molten material in the smelting process, wherein the radial moving ball continuously sinks in the molten material, so that bubbles in the molten material are cut, and the air in the bubbles floats upwards and overflows;
s3, externally applying a magnetic field outside the smelting furnace, and controlling the radial moving balls to sink and float in the molten material at intervals to cut bubbles in a large range;
and S4, pouring the smelted materials into a mold, annealing, and naturally cooling to form the optical glass.
2. The process for preparing optical glass with low bubble rate and high refractive index according to claim 1, wherein: the smelting process lasts for 4-7h, and the sinking and floating interval of the radial dynamic ball in the molten material is controlled to be not more than 30min every two times in the step S3.
3. The process for preparing optical glass with low bubble rate and high refractive index according to claim 2, wherein: after the optical glass is formed, the part of the optical glass obviously containing more bubbles is mechanically cut off.
4. The process for preparing optical glass with low bubble rate and high refractive index according to claim 1, wherein: the movable radial ball comprises an outer temperature-resistant layer (1), wherein the outer temperature-resistant layer (1) is of a hollow structure, an inner heat insulation layer (3) is attached to the inner wall of the outer temperature-resistant layer (1), a movable radial rod is movably inserted into the outer temperature-resistant layer (1), and a magnetic push ring is arranged at the joint of the movable radial rod and the outer temperature-resistant layer (1).
5. The process for preparing optical glass with low bubble rate and high refractive index according to claim 4, wherein: the magnetic push ring comprises a plurality of magnetic push rods which are distributed in a ring shape, each magnetic push rod comprises a support rod (42) fixedly connected with the inner heat insulation layer (3) and an outer push ball (41) fixedly connected to the end part of each support rod (42), and the inner diameter of the ring surrounded by the outer push balls (41) is larger than the diameter of the radial moving rod.
6. The process for preparing optical glass with low bubble rate and high refractive index according to claim 4, wherein: the outer temperature-resistant layer (1) is made of high-temperature ceramic materials, and the double penetrating rod (2) and the inner heat insulation layer (3) are made of foamed ceramic materials.
7. The process for preparing optical glass with low bubble rate and high refractive index according to claim 4, wherein: the radioactive moving rod comprises a double-penetration moving rod (2) with two ends movably penetrating through an outer temperature-resistant layer (1) and an inner heat-insulating layer (3) and a bidirectional moving ball (5) fixedly connected to the middle of the double-penetration moving rod (2), the outer end of the bidirectional moving ball (5) and the outer end of an outer pushing ball (41) towards the center of the outer temperature-resistant layer (1) are fixedly connected with magnetic sheets (6), and the magnetic sheets (6) on the bidirectional moving ball (5) and the outer pushing ball (41) are mutually exclusive.
8. The process for preparing optical glass with low bubble rate and high refractive index according to claim 7, wherein: the minimum distance between every two adjacent double penetrating moving rods (2) and the inner part of the outer temperature-resistant layer (1) is larger than the diameter of the bidirectional moving ball (5).
9. The process for preparing optical glass with low bubble rate and high refractive index according to claim 8, wherein: the bidirectional moving ball (5) is of a hollow structure, and a plurality of counterweight particles (7) are filled in the bidirectional moving ball (5).
10. The process for preparing optical glass with low bubble rate and high refractive index according to claim 5, wherein: the radioactive moving rod comprises a semi-through moving rod (8) movably penetrating through the outer temperature-resistant layer (1) and the inner heat insulation layer (3) and a one-way moving ball (9) fixed at the inner end part of the outer temperature-resistant layer (1) of the semi-through moving rod (8).
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| CN212655684U (en) * | 2020-06-08 | 2021-03-05 | 杭州鑫隆玻璃有限公司 | Fire fighting equipment is used in glass production |
| CN213141801U (en) * | 2020-08-06 | 2021-05-07 | 冯振新 | Molten liquid defoaming device for producing glass |
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