CN113480143A

CN113480143A - Preparation process of optical glass with high refractive index

Info

Publication number: CN113480143A
Application number: CN202110868945.5A
Authority: CN
Inventors: 梅军
Original assignee: Shuyang Feitian Photoelectric Instrument Co ltd
Current assignee: Shuyang Feitian Photoelectric Instrument Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-08

Abstract

The invention discloses a preparation process of optical glass with high refractive index, belonging to the field of optical glass, and the preparation process comprises the following steps: putting optical glass production raw materials into mixing equipment according to a preparation formula for mixing; smelting; stirring and defoaming; molding; heat treatment; heat preservation and annealing; quality inspection; the optical glass is packaged and put in storage, a side-blowing defoaming stirring rod can be added during stirring and smelting to assist in removing bubbles in optical glass melt, existence of micro bubbles is reduced, preparation quality of the optical glass is effectively improved, the formed optical glass can be effectively processed into a thinner thickness, the refractive index of the optical glass is further improved, efficiency of bubble release is improved in a mode of adding a mechanical structure, preparation difficulty of the optical glass is further effectively reduced, technical requirements on process personnel are lowered, batch production of the optical glass is facilitated, and economic benefits of optical glass preparation are further improved.

Description

Preparation process of optical glass with high refractive index

Technical Field

The invention relates to the field of optical glass, in particular to a preparation process of optical glass with high refractive index.

Background

The optical glass can change the propagation direction of light and change the relative spectral distribution of ultraviolet, visible or infrared light. The refractive index is the ratio of the propagation speed of light in a vacuum to the propagation speed of light in the medium. The higher the refractive index of the optical glass, the stronger the ability to refract incident light. The higher the refractive index is, the thinner the optical glass is, namely the center thickness of the optical glass is the same, the same material with the same degree is used, and the edge of the optical glass with the higher refractive index is thinner than the edge of the optical glass with the lower refractive index.

The optical glass can generate bubbles caused by various reasons in the production and preparation process, and whether the bubbles can be eliminated directly influences the quality of the optical glass and the refractive index of the optical glass, so that the service performance of the optical glass is reduced. In the existing optical glass preparation process, bubbles are released by changing the mixture ratio or increasing the melting temperature, but the method is troublesome to operate, has low problem solving efficiency, has high technical requirements on process personnel, and is not beneficial to the mass production and preparation of optical glass.

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 high refractive index, which can be used for assisting the removal of bubbles in an optical glass melt by adding a side-blowing defoaming stirring rod during stirring and smelting, reducing the existence of micro bubbles, further effectively improving the preparation quality of the optical glass, effectively enabling the formed optical glass to be processed into a thinner thickness, further improving the refractive index of the optical glass, improving the efficiency of releasing the bubbles by adding a mechanical structure, further effectively reducing the preparation difficulty of the optical glass, reducing the technical requirements on process personnel, facilitating the batch production of the optical glass and further improving the economic benefit of the preparation of the optical glass.

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 high refractive index comprises the following steps:

s1, mixing ingredients: putting optical glass production raw materials into mixing equipment according to a preparation formula for mixing;

s2, smelting: raising the temperature in the smelting equipment to 1400-1600 ℃ in advance for heat preservation, and then putting the mixed ingredients into the smelting equipment for smelting;

s3, stirring and defoaming: in the smelting process, a stirring mechanism is used for stirring the molten liquid, and bubbles generated in the optical glass molten liquid are eliminated through the intermittent action of a side-blowing type defoaming stirring rod;

s4, forming: after smelting, conveying the optical glass melt into a forming device, and cooling and forming;

s5, heat treatment: quenching and annealing the formed optical glass;

s6, heat preservation annealing: then preserving the heat of the optical glass after the heat treatment at the temperature of 80-100 ℃ for 3 hours, and naturally cooling and annealing in air;

s7, quality inspection: carrying out quality detection on the prepared optical glass, and judging whether the optical glass meets the standard requirements or not;

s8, packaging and warehousing: and (5) subpackaging and warehousing the optical glass qualified in quality inspection. Through increasing the side-blowing formula defoaming puddler when stirring is smelted to the getting rid of bubble in the supplementary optical glass melt, reduce the existence of small bubble, and then effectively improve optical glass's preparation quality, effectively make the optical glass after the shaping can process into thinner thickness, and then improve optical glass's refracting index, and to the efficiency that improves the bubble release through the mode of addding mechanical structure, and then effectively reduce optical glass's the preparation degree of difficulty, reduce the technical requirement to the process personnel, do benefit to optical glass's batch production, and then improve optical glass's economic benefits.

Further, install rabbling mechanism in the melting equipment, the rabbling mechanism lower extreme extends to inside the melting equipment to a plurality of side-blown defoaming puddlers of fixedly connected with, a plurality of defoaming branch pipes of fixedly connected with in the side-blown defoaming puddler, defoaming branch pipe outer end extends to the side-blown defoaming puddler outside, and fixedly connected with floater gas board, be connected with a plurality of semi-transparent floater subassemblies on the floater gas board. Through side-blowing formula defoaming puddler, floater gas board and semi-permeable floater subassembly realize letting in gas in to the optical glass molten liquid, and then supplementary slight bubble's discharge when the stirring, according to the size control defoaming effect of pouring into atmospheric pressure and tolerance, effectively reduce the preparation degree of difficulty in the optical glass preparation process, shorten the debug time, reduce the debugging rejection rate, and then reduced the loss of raw materials.

Furthermore, an air suction channel is formed in the stirring mechanism, an air dredging channel communicated with the air suction channel is formed in the side blowing type defoaming stirring rod, and the defoaming branch pipe is communicated with the air dredging channel. Gas is conveyed into the gas dredging channel through the stirring mechanism to form an airflow channel, so that the preparation quality of the optical glass is improved, the use of other parts is effectively reduced, the airflow is promoted to collect dispersed micro bubbles in the optical glass melt under the action of stirring force of the airflow, and the bubble release efficiency is improved.

Furthermore, the semi-permeable floating ball assembly comprises a retractable air-permeable semi-ball sleeve, a plurality of air-blowing through holes are formed in the floating ball air plate, a plurality of retractable air-permeable semi-ball sleeves matched with the air-blowing through holes are fixedly connected to the outer end of the floating ball air plate, air-permeable rigid semi-ball sleeves matched with the retractable air-permeable semi-ball sleeves are fixedly connected to the air-blowing through holes, and a light air floating ball is arranged between the retractable air-permeable semi-ball sleeve and the air-permeable rigid semi-ball sleeve. The ventilative hemisphere cover of contraction type, the rigid hemisphere cover of breathing freely and mutually supporting of light gas floater effectively play the effect of imitative pellicle for inside gas in the optical glass molten liquid can not reverse entering defoaming branch pipe, and then influence the release of bubble, the effective control bubble release direction improves the precision of defoaming.

Furthermore, the inner part of the defoaming branch pipe is far away from one end of the floating ball gas plate and is fixedly connected with a breathable partition plate, one end, close to the floating ball gas plate, of the inner part of the defoaming branch pipe is slidably connected with an electromagnetic piston, and one end, close to the electromagnetic piston, of the breathable partition plate is fixedly connected with an adjustable electromagnetic coil matched with the electromagnetic piston. Through ventilative baffle, mutually supporting of electromagnetic piston and adjustable solenoid for the electromagnetic piston can remove in the defoaming branch pipe, form piston gas injection action, effectively supplementary defoaming branch pipe disperses the air current to have the gas stream bundle of pressure, with the moving speed that improves the gas stream bundle in the optical glass melt, improve the rising and the cracked efficiency of bubble, and can effectively take away the mechanical bubble near side-blown defoaming puddler, reduce the production of stirring in-process micro bubble.

Furthermore, a plurality of arc-shaped magnetic grooves are formed in the electromagnetic piston, a limiting rotating rod is fixedly connected to the middle of each arc-shaped magnetic groove, and a flexible sealing arc-shaped plug matched with the arc-shaped magnetic grooves is rotatably connected to the limiting rotating rod. Through the cooperation of the flexible closed arc-shaped plug and the arc-shaped magnetic groove, the sealing property of the electromagnetic piston is changed, so that the electromagnetic piston can effectively pressurize and suck air, and the applicability of the electromagnetic piston is improved.

Furthermore, the side wall of the flexible closed arc-shaped plug is fixedly connected with a circle of magnetic telescopic arc-shaped strip, and the magnetic telescopic arc-shaped strip is matched with the arc-shaped magnetic groove. The flexible arc strip of magnetism produces the magnetism back and arc magnetism groove absorption at electromagnetic piston, and then improves electromagnetic piston's sealed degree, improves air current transport pressure.

Furthermore, ventilative baffle is close to a plurality of direction spacing sliding sleeves of electromagnetic piston one end fixedly connected with, and a plurality of direction spacing sliding sleeves center around in the adjustable solenoid outside, electromagnetic piston is close to ventilative baffle one end fixedly connected with direction spacing slide bar, and direction spacing slide bar and direction spacing sliding sleeve form telescopic link structure. The telescopic rod structure formed by the guide limiting sliding sleeve and the guide limiting sliding rod guides and limits the movement of the electromagnetic piston, so that the phenomenon that the electromagnetic piston is excessively moved to cause release or adhesion is effectively avoided while mechanical loss is reduced.

Furthermore, one end of the guide limiting sliding sleeve, which is close to the electromagnetic piston, is fixedly connected with a pair of ventilating struts, and the ventilating struts are matched with the corresponding flexible closed arc-shaped plugs. The flexible sealed arc-shaped plug is pressed after the return demagnetization of the electromagnetic piston by the ventilation supporting rod, so that the flexible sealed arc-shaped plug is deformed, the electromagnetic piston has air permeability, the electromagnetic piston is assisted to complete the air suction action through the arc-shaped magnetic groove, and the adjustability of the electromagnetic piston is improved.

Furthermore, one end of the ventilating partition plate, which is close to the electromagnetic piston, is fixedly connected with a coil sheath sleeved on the outer side of the adjustable electromagnetic coil, and one end of the adjustable electromagnetic coil, which is close to the electromagnetic piston, is fixedly connected with a magnetic force transmission block. The coil sheath protects the adjustable electromagnetic coil, reduces the magnetic loss of the adjustable electromagnetic coil, improves the magnetic conduction efficiency, controls the magnetic force of the adjustable electromagnetic coil by controlling the voltage on the adjustable electromagnetic coil, effectively controls the moving speed of the electromagnetic piston, and is convenient for adjusting the air flow and the air flow pressure.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through increasing the side-blowing formula defoaming puddler when stirring is smelted to the getting rid of bubble in the supplementary optical glass melt, reduce the existence of small bubble, and then effectively improve optical glass's preparation quality, effectively make the optical glass after the shaping can process into thinner thickness, and then improve optical glass's refracting index, and to the efficiency that improves the bubble release through the mode of addding mechanical structure, and then effectively reduce optical glass's the preparation degree of difficulty, reduce the technical requirement to the process personnel, do benefit to optical glass's batch production, and then improve optical glass's economic benefits.

(2) Through side-blowing formula defoaming puddler, floater gas board and semi-permeable floater subassembly realize letting in gas in to the optical glass molten liquid, and then supplementary slight bubble's discharge when the stirring, according to the size control defoaming effect of pouring into atmospheric pressure and tolerance, effectively reduce the preparation degree of difficulty in the optical glass preparation process, shorten the debug time, reduce the debugging rejection rate, and then reduced the loss of raw materials.

(3) Gas is conveyed into the gas dredging channel through the stirring mechanism to form an airflow channel, so that the preparation quality of the optical glass is improved, the use of other parts is effectively reduced, the airflow is promoted to collect dispersed micro bubbles in the optical glass melt under the action of stirring force of the airflow, and the bubble release efficiency is improved.

(4) The ventilative hemisphere cover of contraction type, the rigid hemisphere cover of breathing freely and mutually supporting of light gas floater effectively play the effect of imitative pellicle for inside gas in the optical glass molten liquid can not reverse entering defoaming branch pipe, and then influence the release of bubble, the effective control bubble release direction improves the precision of defoaming.

(5) Through ventilative baffle, mutually supporting of electromagnetic piston and adjustable solenoid for the electromagnetic piston can remove in the defoaming branch pipe, form piston gas injection action, effectively supplementary defoaming branch pipe disperses the air current to have the gas stream bundle of pressure, with the moving speed that improves the gas stream bundle in the optical glass melt, improve the rising and the cracked efficiency of bubble, and can effectively take away the mechanical bubble near side-blown defoaming puddler, reduce the production of stirring in-process micro bubble.

(6) Through the cooperation of the flexible closed arc-shaped plug and the arc-shaped magnetic groove, the sealing property of the electromagnetic piston is changed, so that the electromagnetic piston can effectively pressurize and suck air, and the applicability of the electromagnetic piston is improved.

(7) The flexible arc strip of magnetism produces the magnetism back and arc magnetism groove absorption at electromagnetic piston, and then improves electromagnetic piston's sealed degree, improves air current transport pressure.

(8) The telescopic rod structure formed by the guide limiting sliding sleeve and the guide limiting sliding rod guides and limits the movement of the electromagnetic piston, so that the phenomenon that the electromagnetic piston is excessively moved to cause release or adhesion is effectively avoided while mechanical loss is reduced.

(9) The flexible sealed arc-shaped plug is pressed after the return demagnetization of the electromagnetic piston by the ventilation supporting rod, so that the flexible sealed arc-shaped plug is deformed, the electromagnetic piston has air permeability, the electromagnetic piston is assisted to complete the air suction action through the arc-shaped magnetic groove, and the adjustability of the electromagnetic piston is improved.

(10) The coil sheath protects the adjustable electromagnetic coil, reduces the magnetic loss of the adjustable electromagnetic coil, improves the magnetic conduction efficiency, controls the magnetic force of the adjustable electromagnetic coil by controlling the voltage on the adjustable electromagnetic coil, effectively controls the moving speed of the electromagnetic piston, and is convenient for adjusting the air flow and the air flow pressure.

Drawings

FIG. 1 is a schematic view of the flow structure of the preparation process of the present invention;

FIG. 2 is a schematic structural view of a cross section of a smelting plant according to the present invention;

FIG. 3 is a schematic view of a partial cross-sectional structure of a side-blowing defoaming stirring bar according to the present invention;

FIG. 4 is a schematic diagram of a sectional view of the defoaming branch pipe in blowing according to the present invention;

FIG. 5 is a schematic view of the axial measurement structure of the floating ball air plate during blowing of the present invention;

FIG. 6 is a schematic sectional view of the semi-permeable float ball assembly in air blowing according to the present invention;

FIG. 7 is a schematic diagram of the explosion structure of the invention with the cooperation of the air-permeable partition and the electromagnetic piston;

FIG. 8 is a schematic axial view of a flexible closed arc plug according to the present invention;

FIG. 9 is a schematic sectional view of the defoaming branch pipe in a front view according to the present invention;

FIG. 10 is a schematic view of the axial structure of the floating ball air plate during air suction according to the present invention;

FIG. 11 is a schematic view of the structure of the stirring mechanism of the present invention showing the reverse axial direction of the airflow during the defoaming action.

The reference numbers in the figures illustrate:

1 smelting equipment, 2 stirring mechanisms, 201 side-blowing type defoaming stirring rods, 202 gas dredging channels, 3 defoaming branch pipes, 4 floating ball gas plates, 5 semi-permeable floating ball assemblies, 501 contraction type permeable semi-ball sleeves, 502 permeable rigid semi-ball sleeves, 503 light gas floating balls, 6 permeable partition plates, 7 electromagnetic pistons, 701 arc-shaped magnetic grooves, 702 limiting rotating rods, 8 adjustable electromagnetic coils, 801 coil sheaths, 802 magnetic force transmission blocks, 9 flexible sealing arc-shaped plugs, 901 magnetic telescopic arc-shaped strips, 10 guiding limiting sliding sleeves, 11 guiding limiting sliding rods and 12 ventilating support rods.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope 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 to 11, a process for preparing an optical glass with a high refractive index includes the following steps:

s2, smelting: raising the temperature in the smelting equipment 1 to 1400-1600 ℃ in advance for heat preservation, and then putting the mixed ingredients into the smelting equipment 1 for smelting;

s3, stirring and defoaming: in the smelting process, the melt is stirred by using the stirring mechanism 2, and bubbles generated in the optical glass melt are eliminated through the intermittent action of the side-blowing type defoaming stirring rod 201;

s5, heat treatment: quenching and annealing the formed optical glass;

s8, packaging and warehousing: and (5) subpackaging and warehousing the optical glass qualified in quality inspection. Through increasing side-blowing defoaming puddler 201 when stirring is smelted to the elimination of bubble in the supplementary optical glass melt, reduce the existence of small bubble, and then effectively improve optical glass's preparation quality, effectively make the optical glass after the shaping can process into thinner thickness, and then improve optical glass's refracting index, and to the efficiency that improves the bubble release through the mode of addding mechanical structure, and then effectively reduce optical glass's the preparation degree of difficulty, reduce the technical requirement to the technology personnel, do benefit to optical glass's batch production, and then improve optical glass's economic benefits.

Example 2:

referring to fig. 1 to 11, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 1, only the points different from embodiment 1 will be described below for the sake of convenience. This example 2 differs from example 1 in that: referring to fig. 2 and fig. 3, an agitating mechanism 2 is installed in the melting equipment 1, the lower end of the agitating mechanism 2 extends into the melting equipment 1 and is fixedly connected with a plurality of side-blowing defoaming stirring rods 201, a plurality of defoaming branch pipes 3 are fixedly connected in the side-blowing defoaming stirring rods 201, the outer ends of the defoaming branch pipes 3 extend to the outer side of the side-blowing defoaming stirring rods 201 and are fixedly connected with a floating ball air plate 4, and a plurality of semi-permeable floating ball assemblies 5 are connected on the floating ball air plate 4. Through side-blown defoaming puddler 201, floater gas board 4 and semi-permeable floater subassembly 5 realize letting in gas in to the optical glass molten liquid, and then supplementary slight bubble's discharge when the stirring, according to the size control defoaming effect of pouring into atmospheric pressure and tolerance, effectively reduce the preparation degree of difficulty in the optical glass preparation process, shorten the debug time, reduce the debugging rejection rate, and then reduced the loss of raw materials.

Referring to fig. 3 and 11, the stirring mechanism 2 is provided with an air suction channel, the side-blowing type defoaming stirring rod 201 is provided with an air evacuation channel 202 communicated with the air suction channel, and the defoaming branch pipe 3 is communicated with the air evacuation channel 202. Gas is conveyed into the gas dredging channel 202 through the stirring mechanism 2 to form a gas flow passage, so that the preparation quality of the optical glass is improved, the use of other parts is effectively reduced, the gas flow is promoted to collect dispersed micro bubbles in the optical glass melt under the action of the stirring force of the gas flow, and the bubble release efficiency is improved.

Referring to fig. 5, 6 and 10, the semi-permeable floating ball assembly 5 includes a retractable air-permeable semi-ball sleeve 501, a plurality of air-blowing through holes are formed on the floating ball air plate 4, a plurality of retractable air-permeable semi-ball sleeves 501 matched with the air-blowing through holes are fixedly connected to the outer end of the floating ball air plate 4, an air-permeable rigid semi-ball sleeve 502 matched with the retractable air-permeable semi-ball sleeve 501 is fixedly connected to the air-blowing through holes, and a light air floating ball 503 is disposed between the retractable air-permeable semi-ball sleeve 501 and the air-permeable rigid semi-ball sleeve 502. The cooperation each other of the ventilative hemisphere cover of contraction type 501, ventilative rigid hemisphere cover 502 and light gas floater 503 effectively plays the effect of imitative pellicle for inside gas in the optical glass melt can not reverse entering defoaming branch pipe 3, and then influences the release of bubble, effective control bubble release direction improves the precision of defoaming.

Referring to fig. 1-11, the method of use: by starting the stirring mechanism 2, the side-blowing defoaming stirring rod 201 rotates in the smelting equipment 1 to stir the optical glass melt, when defoaming is needed, the air suction channel on the stirring mechanism 2 is used for ventilating the air dredging channel 202 in the side-blowing defoaming stirring rod 201, so that air flow is provided in the defoaming branch pipe 3 (please refer to fig. 11, the air suction direction and the air blowing direction of the air flow), the air flow blows the air permeable rigid hemispherical sleeve 502 through the air blowing through hole on the floating ball air plate 4, the light air floating ball 503 is further kept away from the air permeable rigid hemispherical sleeve 502, the retractable air permeable hemispherical sleeve 501 is expanded (please refer to fig. 5), the air flow enters the optical glass melt through the air hole on the light air floating ball 503 to adsorb micro bubbles in the optical glass melt, and forms bubbles under the assistance of the stirring force, the bubbles float to the surface of the optical glass melt to be broken, and the micro bubbles in the optical glass melt are further reduced, the quality of the optical glass is improved; when defoaming is not needed, airflow exists in the defoaming branch pipe 3, the retractable breathable hemispherical sleeve 501 retracts (please refer to fig. 10) at the moment, and the light air floating ball 503 is extruded in a memorial manner, so that the light air floating ball 503 is respectively attached to the retractable breathable hemispherical sleeve 501 and the light air floating ball 503, a blowing through hole is further sealed, bubbles in the optical glass melt cannot reversely enter the defoaming branch pipe 3, regulation variables are reduced, and the regulation difficulty is reduced.

Example 3:

referring to fig. 1 to 11, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 2, only the points different from embodiment 2 will be described below for the sake of convenience. This example 3 differs from example 2 in that: referring to fig. 4, 9 and 7, a ventilating partition plate 6 is fixedly connected to one end of the defoaming branch pipe 3 away from the floating ball air plate 4, an electromagnetic piston 7 is slidably connected to one end of the defoaming branch pipe 3 close to the floating ball air plate 4, and an adjustable electromagnetic coil 8 matched with the electromagnetic piston 7 is fixedly connected to one end of the ventilating partition plate 6 close to the electromagnetic piston 7. Through ventilative baffle 6, electromagnetic piston 7 and adjustable solenoid 8 mutually support, make electromagnetic piston 7 can remove in defoaming branch pipe 3, form piston gas injection action, effective supplementary defoaming branch pipe 3 disperses the air current to have the air current bundle of pressure, in order to improve the moving speed of air current bundle in the optical glass melt, improve the rising and the cracked efficiency of bubble, and can effectively take away the mechanical bubble near side-blown defoaming puddler 201, reduce the production of stirring in-process micro bubble.

Referring to fig. 7, a plurality of arc-shaped magnetic grooves 701 are formed in the electromagnetic piston 7, a limiting rotating rod 702 is fixedly connected to the middle of each arc-shaped magnetic groove 701, and a flexible closed arc-shaped plug 9 matched with the arc-shaped magnetic grooves 701 is rotatably connected to the limiting rotating rod 702. Through the cooperation of the flexible closed arc-shaped plug 9 and the arc-shaped magnetic groove 701, the sealing property of the electromagnetic piston 7 is changed, so that the electromagnetic piston 7 can effectively pressurize and suck air, and the applicability of the electromagnetic piston 7 is improved.

Referring to fig. 8, a circle of magnetically telescopic arc-shaped strip 901 is fixedly connected to the side wall of the flexibly sealed arc-shaped plug 9, and the magnetically telescopic arc-shaped strip 901 is matched with the arc-shaped magnetic slot 701. The magnetic telescopic arc-shaped strip 901 is adsorbed to the arc-shaped magnetic groove 701 after the electromagnetic piston 7 generates magnetism, so that the sealing degree of the electromagnetic piston 7 is improved, and the air flow conveying pressure is improved.

Referring to fig. 4 and 9, one end of the air-permeable partition 6 close to the electromagnetic piston 7 is fixedly connected with a plurality of guiding limiting sliding sleeves 10, the plurality of guiding limiting sliding sleeves 10 surround the adjustable electromagnetic coil 8, one end of the electromagnetic piston 7 close to the air-permeable partition 6 is fixedly connected with a guiding limiting sliding rod 11, and the guiding limiting sliding rod 11 and the guiding limiting sliding sleeves 10 form a telescopic rod structure. The telescopic rod structure formed by the guide limiting sliding sleeve 10 and the guide limiting sliding rod 11 guides and limits the movement of the electromagnetic piston 7, so that the phenomenon that the electromagnetic piston 7 is moved excessively to cause loose separation or adhesion is effectively avoided while mechanical loss is reduced.

Referring to fig. 4, one end of the guiding and limiting sliding sleeve 10 close to the electromagnetic piston 7 is fixedly connected with a pair of ventilating struts 12, and the ventilating struts 12 are matched with the corresponding flexible closed arc plugs 9. The ventilation supporting rod 12 presses the flexible closed arc-shaped plug 9 after the electromagnetic piston 7 returns to demagnetize, so that the flexible closed arc-shaped plug 9 deforms, the electromagnetic piston 7 has air permeability, the electromagnetic piston 7 is assisted to complete air suction through the arc-shaped magnetic groove 701, and the adjustability of the electromagnetic piston 7 is improved.

Referring to fig. 10, a coil sheath 801 sleeved on the outer side of the adjustable electromagnetic coil 8 is fixedly connected to one end of the air-permeable partition 6 close to the electromagnetic piston 7, and a magnetic force transmission block 802 is fixedly connected to one end of the adjustable electromagnetic coil 8 close to the electromagnetic piston 7. The coil sheath 801 protects the adjustable electromagnetic coil 8, reduces the magnetic loss of the adjustable electromagnetic coil 8, improves the magnetic conduction efficiency, controls the voltage on the adjustable electromagnetic coil 8, controls the magnetic force of the adjustable electromagnetic coil, effectively controls the moving speed of the electromagnetic piston 7, and is convenient for adjusting the air flow and the air flow pressure.

Referring to fig. 1-11, the method of use: on the basis of the method in embodiment 2, during defoaming, the electromagnetic piston 7 and the adjustable electromagnetic coil 8 are simultaneously energized to generate repulsive magnetic force therebetween, so that the electromagnetic piston 7 moves toward the floating ball air plate 4 under the guidance of the guide limit sliding sleeve 10 and the guide limit sliding rod 11, and since the electromagnetic piston 7 has magnetic force, the arc-shaped magnetic groove 701 magnetically adsorbs the magnetic telescopic arc-shaped strip 901, so that a sealed space is formed between the electromagnetic piston 7 and the floating ball air plate 4, and further pressurizes the air flow to improve the flow rate thereof, and the air flow is blown out of the semi-permeable floating ball assembly 5 to act on the optical glass solution for defoaming (see fig. 4); after one-way operation is completed, the electromagnetic piston 7 is powered off, the adjustable electromagnetic coil 8 is enabled to carry out magnetic adsorption on the electromagnetic piston 7, the electromagnetic piston 7 is enabled to reset and move under the guidance of the guide limiting sliding sleeve 10 and the guide limiting sliding rod 11, after the electromagnetic piston 7 is demagnetized, the arc-shaped magnetic groove 701 releases the adsorption on the magnetic telescopic arc-shaped strip 901, the flexible closed arc-shaped plug 9 generates a gap, the electromagnetic piston 7 is ventilated, when the electromagnetic piston 7 moves to be close to the guide limiting sliding sleeve 10, the ventilating support rod 12 presses the flexible closed arc-shaped plug 9, the flexible closed arc-shaped plug 9 generates action, the gap between the flexible closed arc-shaped plug 9 and the arc-shaped magnetic groove 701 is increased, the air inlet efficiency is improved (please refer to fig. 9), and air suction return is completed; and in the reciprocating movement process of the electromagnetic piston 7, the air flow is controlled, and the control effect is improved.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A preparation process of optical glass with high refractive index is characterized in that: the method comprises the following steps:

s2, smelting: raising the temperature in the smelting equipment (1) to 1400-1600 ℃ in advance for heat preservation, and then putting the mixed ingredients into the smelting equipment (1) for smelting;

s3, stirring and defoaming: in the smelting process, a stirring mechanism (2) is used for stirring the melt, and bubbles generated in the optical glass melt are eliminated through the intermittent action of a side-blowing defoaming stirring rod (201);

s5, heat treatment: quenching and annealing the formed optical glass;

s8, packaging and warehousing: and (5) subpackaging and warehousing the optical glass qualified in quality inspection.

2. A process for the preparation of an optical glass having a high refractive index according to claim 1, characterized in that: install rabbling mechanism (2) in smelting equipment (1), rabbling mechanism (2) lower extreme extends to inside smelting equipment (1) to a plurality of side-blown defoaming puddlers of fixedly connected with (201), a plurality of defoaming branch pipes of fixedly connected with (3) in side-blown defoaming puddler (201), defoaming branch pipe (3) outer end extends to the side-blown defoaming puddler of (201) outside to fixedly connected with floater gas board (4), be connected with a plurality of semi-permeability floater subassembly (5) on floater gas board (4).

3. A process for the preparation of an optical glass having a high refractive index according to claim 2, characterized in that: the stirring mechanism (2) is provided with an air suction channel, the side-blowing type defoaming stirring rod (201) is internally provided with an air dredging channel (202) communicated with the air suction channel, and the defoaming branch pipe (3) is communicated with the air dredging channel (202).

4. A process for the preparation of an optical glass having a high refractive index according to claim 2, characterized in that: the semi-permeable floating ball assembly (5) comprises a contraction type breathable semispherical sleeve (501), a plurality of air blowing through holes are formed in a floating ball air plate (4), the outer end of the floating ball air plate (4) is fixedly connected with a plurality of contraction type breathable semispherical sleeves (501) matched with the air blowing through holes, air blowing through holes are internally and fixedly connected with rigid semispherical sleeves (502) matched with the contraction type breathable semispherical sleeves (501), and light air floating balls (503) are arranged between the contraction type breathable semispherical sleeves (501) and the rigid semispherical sleeves (502).

5. A process for the preparation of an optical glass having a high refractive index according to claim 2, characterized in that: the defoaming branch pipe (3) is internally far away from one end of the floating ball gas plate (4) and is fixedly connected with a breathable partition plate (6), one end of the defoaming branch pipe (3) which is close to the floating ball gas plate (4) is internally connected with an electromagnetic piston (7) in a sliding manner, and the breathable partition plate (6) is close to one end of the electromagnetic piston (7) and is fixedly connected with an adjustable electromagnetic coil (8) matched with the electromagnetic piston (7).

6. A process for the preparation of an optical glass having a high refractive index according to claim 5, characterized in that: a plurality of arc-shaped magnetic grooves (701) are formed in the electromagnetic piston (7), the middle of each arc-shaped magnetic groove (701) is fixedly connected with a limiting rotating rod (702), and a flexible sealing arc-shaped plug (9) matched with the arc-shaped magnetic grooves (701) is rotatably connected to the limiting rotating rods (702).

7. A process for the preparation of an optical glass having a high refractive index according to claim 6, characterized in that: the side wall of the flexible closed arc-shaped plug (9) is fixedly connected with a circle of magnetic telescopic arc-shaped strip (901), and the magnetic telescopic arc-shaped strip (901) is matched with the arc-shaped magnetic groove (701).

8. A process for the preparation of an optical glass having a high refractive index according to claim 6, characterized in that: ventilative baffle (6) are close to a plurality of direction limiting sliding sleeve (10) of electromagnetic piston (7) one end fixedly connected with, and a plurality of direction limiting sliding sleeve (10) center on adjustable solenoid (8) outside, electromagnetic piston (7) are close to ventilative baffle (6) one end fixedly connected with direction limiting sliding rod (11), and direction limiting sliding rod (11) and direction limiting sliding sleeve (10) form telescopic link structure.

9. A process for the preparation of an optical glass having a high refractive index according to claim 8, characterized in that: one end of the guide limiting sliding sleeve (10) close to the electromagnetic piston (7) is fixedly connected with a pair of ventilating support rods (12), and the ventilating support rods (12) are matched with the corresponding flexible closed arc-shaped plugs (9).

10. A process for the preparation of an optical glass having a high refractive index according to claim 5, characterized in that: one end of the ventilating partition plate (6) close to the electromagnetic piston (7) is fixedly connected with a coil sheath (801) sleeved on the outer side of the adjustable electromagnetic coil (8), and one end of the adjustable electromagnetic coil (8) close to the electromagnetic piston (7) is fixedly connected with a magnetic force transmission block (802).