CN115215530A

CN115215530A - Swing furnace for chalcogenide glass smelting

Info

Publication number: CN115215530A
Application number: CN202210833071.4A
Authority: CN
Inventors: 焦胜兵; 杨睿; 陈传兵
Original assignee: Hubei New Huaguang Information Materials Co Ltd
Current assignee: Hubei New Huaguang Information Materials Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-10-21
Anticipated expiration: 2042-07-15
Also published as: CN115215530B

Abstract

The invention discloses a swing furnace for chalcogenide glass melting. Belongs to the technical field of optical glass melting. The melting furnace mainly solves the problems that the service life of mechanical transmission parts is shortened and the electrical connection of a heating and temperature detection loop is frequently broken because the conventional swinging furnace is in integral swinging in the melting process. It is mainly characterized in that: comprises a heating component, a swinging component and a translation mechanism; the heating assembly comprises a furnace body and a movable furnace cover; the translation mechanism realizes the opening and closing of the movable furnace cover and the furnace body; the swinging assembly comprises a swinging cylinder and a swinging cylinder driving mechanism; the swing cylinder driving mechanism is arranged on the movable furnace cover, and the swing cylinder is positioned on the inner side of the movable furnace cover. The invention has the characteristics of realizing swinging by only swinging the barrel, reducing mechanical and electrical failure rate and improving the stability of the chalcogenide glass production process, and is mainly used for melting and producing chalcogenide glass.

Description

Swing furnace for chalcogenide glass smelting

Technical Field

The invention belongs to the technical field of optical glass smelting, and particularly relates to a swing furnace for chalcogenide glass smelting.

Background

The swing furnace is melting equipment commonly used in the preparation process of chalcogenide glass by adopting a quartz ampoule bottle method, the purified mixture is usually placed in an ampoule bottle firstly, the ampoule bottle is placed in the swing furnace after being vacuumized and sealed by melting, high-temperature melting and homogenization are carried out, and then quenching and annealing treatment are carried out to finally prepare a chalcogenide glass blank.

The traditional chalcogenide glass swinging furnace adopts a mode that a furnace body integrally swings, the service life of a mechanical transmission part is shortened by a frequent forward and reverse swinging process due to large running inertia, and in addition, the electrical connection of a heating loop and a temperature detection loop is often broken because a heating element and a temperature detection element in a hearth also rotate forward and reverse along with the furnace body, so that the mechanical and electrical failure rate is higher, and the stability of the chalcogenide glass production process is influenced. Meanwhile, in the process of melting chalcogenide glass by adopting a traditional swing furnace, as the solid chalcogenide glass mixture is melted into liquid at the melting temperature and is evaporated to generate a small amount of gaseous substances, the ampoule bottle bears a certain positive pressure, when the quality of the ampoule bottle is poor or the ampoule bottle collides due to poor fixation in the swing process, the ampoule bottle is easy to break, harmful raw materials or gases in the bottle escape and pollute the environment, particularly when the temperature in the furnace abnormally rises and exceeds a certain limit value due to the failure of a control system, the evaporation amount and the pressure of the gases in the ampoule bottle sharply increase, when the strength of the ampoule bottle exceeds the limit value, the bottle body bursts, and if the pressure cannot be released in time, a hearth possibly bursts, and serious production and safety accidents are caused. In addition, the development of the industry requires to improve the automation level of the chalcogenide glass production process, but when the traditional swinging furnace stops swinging, the furnace body is not accurately stopped, the furnace cover is opened and closed, ampoule bottles in the furnace are installed through manual operation, and the like, so that various factors are not beneficial to the implementation of automatic production means such as ampoule bottle manipulator clamping and the like.

Chinese patent publication No. CN 105174691B discloses a vacuum melting device for non-oxide optical glass, which comprises a melting furnace body and a swinging device, wherein the furnace body is installed on the ground, and a vacuum melting container is installed in a swinging box and swings along with the swinging box, so that frequent disconnection of a lead in the production process can be effectively avoided, but harmful gas escape after bottle explosion cannot be solved, explosion risks under abnormal conditions can be effectively eliminated, furnace body positioning, container clamping and the like are manually completed, and automatic production operation cannot be performed.

Disclosure of Invention

In view of the above background art, the technical problem to be solved by the present invention is to improve the safety of chalcogenide glass melting process while ensuring the stability thereof, and to facilitate the automation operation matched with the melting process.

The invention provides a swing furnace for chalcogenide glass melting, which comprises a heating component and a swing component and is characterized in that: the heating assembly comprises a furnace body and a movable furnace cover; the furnace also comprises a translation mechanism for realizing the opening and closing of the movable furnace cover and the furnace body; the swinging assembly comprises a swinging cylinder and a swinging cylinder driving mechanism; the swing cylinder driving mechanism is arranged on the movable furnace cover, and the swing cylinder is positioned on the inner side of the movable furnace cover.

The swing assembly in the technical scheme of the invention also comprises a clamping assembly; the clamping assembly, the swinging cylinder and the swinging cylinder driving mechanism form a clamping swinging assembly.

The furnace body in the technical scheme of the invention consists of a furnace shell, a metal inner container and an exhaust pipe; one end of the exhaust pipe is arranged on the inner metal container and communicated with the inner metal container, and the other end of the exhaust pipe is connected with the exhaust device.

In the technical scheme of the invention, a step-shaped heat preservation lining is arranged on the inner side of the movable furnace cover; the furnace shell is provided with a step-shaped furnace door opening matched with the movable furnace cover and the heat preservation lining.

The swing cylinder driving mechanism in the technical scheme of the invention consists of a servo motor, a driving gear, a driven gear, a rotating shaft and a bearing sleeve; the rotary shaft is of a hollow tubular structure and is arranged in the center of the movable furnace cover through a bearing sleeve, one end of the rotary shaft is connected with the swinging cylinder through a through hole in the centers of the movable furnace cover and the heat-preservation lining, and the other end of the rotary shaft is connected with the center of the driven gear; the servo motor is fixedly arranged on the movable furnace cover and is connected with the driven gear through the driving gear.

The clamping assembly in the technical scheme of the invention consists of a clamping cylinder, a clamping shifting fork, a U-shaped fork opening plate, a transmission pin, a clamping shaft, a rotary supporting sleeve, a movable V-shaped block and a fixed V-shaped block; wherein, the clamping cylinder is fixedly arranged on the outer side of the movable furnace cover; the U-shaped fork orifice plate is cylindrical, a groove is formed in the middle of a cylindrical surface, and the U-shaped fork orifice plate is arranged on the driven gear through a transmission pin; one end of the clamping shifting fork is inserted into the groove of the U-shaped fork opening plate, and the other end of the clamping shifting fork is connected with an output shaft of the clamping cylinder; the clamping shaft is fixed in the rotating shaft through the rotating support sleeve, one end of the clamping shaft is vertically connected with the U-shaped fork plate, and the other end of the clamping shaft extends into the swinging cylinder and is connected with the movable V-shaped block; the fixed V-shaped block is fixed on the inner wall of the swing cylinder and matched with the movable V-shaped block.

The translation mechanism in the technical scheme of the invention consists of a linear guide rail and a translation cylinder; the movable furnace cover is vertically arranged on the linear guide rail and is connected with the moving slide block of the translation cylinder through a connecting part.

In the technical scheme of the invention, a furnace cover maintaining pressure sensor is arranged at one end of the translation cylinder, which is far away from the furnace body.

In the technical scheme of the invention, one end of the clamping cylinder, which is far away from the movable furnace cover, is provided with a clamping pressure sensor.

In the technical scheme of the invention, the furnace body and the translation mechanism are fixed on the mounting bottom plate; the movable furnace cover is arranged on the translation mechanism; the swing cylinder and the swing cylinder driving mechanism are arranged on the movable furnace cover.

The invention adopts the rocking furnace for the chalcogenide glass smelting, which consists of the heating component, the rocking component and the translation mechanism, wherein the heating component comprises a furnace body and a movable furnace cover, the rocking component comprises a rocking cylinder and a rocking cylinder driving mechanism, the rocking cylinder driving mechanism is arranged on the movable furnace cover, the rocking cylinder is positioned on the inner side of the movable furnace cover, and the translation mechanism realizes the opening and closing of the movable furnace cover and the furnace body, so that in the chalcogenide glass preparation process, an ampoule bottle filled with a mixture is placed in the rocking cylinder, the rocking is realized through the rocking cylinder driving mechanism, and the heating component is fixed, thereby overcoming the defects that the service life of a mechanical transmission part is shortened due to the frequent forward and reverse rotation rocking of the rocking furnace body and the stability of the chalcogenide glass production process is influenced due to frequent open circuit of an electric connection of a heating and temperature detection loop in the existing furnace body integral rocking mode.

The invention has the characteristics of realizing swinging by only swinging the barrel, reducing the mechanical and electrical failure rate and improving the stability of the production process of the chalcogenide glass, and is mainly used for melting and producing the chalcogenide glass.

Drawings

FIG. 1 is a schematic structural diagram of a rocking furnace for chalcogenide glass melting according to the present invention.

Labeled as: 1. a furnace shell; 2. a metal liner; 3. an exhaust pipe; 4. mounting a bottom plate; 5. a translation cylinder; 6. shaking the cylinder; 7. a bearing housing; 8. a linear guide rail; 9. the furnace cover keeps a pressure sensor; 10. a servo motor; 11. a driving gear; 12. a driven gear; 13. a U-shaped fork plate; 14. a clamping shaft; 15. rotating the supporting sleeve; 16. clamping the shifting fork; a drive pin; 18. a clamping cylinder; 19. clamping the pressure sensor; 20. a movable furnace cover; 21. insulating the inner lining; 22. a rotating shaft; 23. a movable V-shaped block; 24. an ampoule bottle; 25. and fixing the V-shaped block.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, an embodiment of a swing furnace for chalcogenide glass melting comprises a heating assembly, a swing assembly, a clamping assembly, a translation mechanism, a mounting bottom plate 4 and the like, wherein the heating assembly and the translation mechanism are sequentially fixed on the mounting bottom plate 4.

The heating assembly includes a furnace body and a movable furnace lid 20. The furnace body comprises a furnace shell 1, a metal inner container 2 and an exhaust pipe 3, an electric heating furnace wire and a thermocouple are arranged between the furnace shell 1 and the metal inner container 2, the metal inner container 2 is arranged in the middle of a furnace chamber, one end of the exhaust pipe 3 is arranged at the bottom of the inner metal inner container 2 and is communicated with the inner metal inner container, and the other end of the exhaust pipe is connected with an air draft device. The furnace body is fixed on the mounting bottom plate 4. The movable furnace cover 20 is a circular metal plate processed with assembling steps, and a step-shaped heat preservation lining 21 is embedded on the inner surface of the movable furnace cover 20. The furnace shell 1 is provided with a step-shaped furnace door opening matched with a movable furnace cover 20 and a heat preservation lining 21.

The translation mechanism is composed of a linear guide rail 8, a translation cylinder 5 and a furnace cover holding pressure sensor 9. Wherein, the movable furnace cover 20 is vertically arranged on the linear guide rail 8 and is connected with the moving slide block of the translation cylinder 5 through a connecting part. The translation cylinder 5 is a rectangular rodless cylinder, and under the action of the translation cylinder, the movable furnace cover 20 can move left and right along the linear guide rail 8, so that the opening and closing of the furnace cover are realized. When the movable furnace cover 20 moves to the right to a position tightly abutting against the furnace shell 1, the movable furnace cover 20 is matched with the corresponding contact surface of the furnace shell 1 through the assembly step surface, and the relative sealing of the hearth is realized. A furnace cover holding pressure sensor 9 is arranged at one end of the translation cylinder 5 far away from the furnace shell 1 and is used for detecting the holding pressure when the movable furnace cover 20 is in a closed state.

The rocking assembly comprises a rocking cylinder 6 and a rocking cylinder drive mechanism. The rocking cylinder driving mechanism is composed of a servo motor 10, a drive gear 11, a driven gear 12, a rotary shaft 22, and a bearing housing 7. The servo motor 10 is fixed to the movable lid 20 by a mounting member, and the driving gear 11 is connected to an output shaft of the servo motor 10 at a central position thereof. The movable furnace cover 20 and the heat preservation lining 21 are provided with a through hole in the center. The rotating shaft 22 is a hollow tubular structure and is arranged at the center of the movable furnace cover 20 through a bearing sleeve 7. One end of the rotating shaft 22 is connected with the swinging cylinder 6 through a through hole at the center of the movable furnace cover 20 and the heat preservation lining 21, the other end is connected with the center of the driven gear 12, and the driving gear 11 is meshed with the driven gear 12. Under the driving of the positive and negative rotation of the servo motor 10, the swinging cylinder 6 can swing back and forth according to a certain angle.

The clamping assembly consists of a clamping cylinder 18, a clamping pressure sensor 19, a clamping shifting fork 16, a U-shaped fork opening plate 13, a transmission pin 17, a clamping shaft 14, a rotary supporting sleeve 15, a movable V-shaped block 23 and a fixed V-shaped block 25. Wherein, the clamping cylinder 18 is horizontally fixed on a movable furnace cover 20 and is positioned outside the movable furnace cover 20. The U-shaped fork plate 13 is cylindrical, a groove is formed in the middle of the cylindrical surface, and the U-shaped fork plate is arranged on the outer side of the driven gear 12 in parallel through a transmission pin 17. An output shaft of the clamping cylinder 18 is connected with one end of the clamping shifting fork 16, and the other end of the clamping shifting fork 16 is inserted into a groove in the middle of the cylindrical surface of the cylindrical U-shaped fork opening plate 13. The U-shaped fork opening plate 13 is vertically connected with one end of a clamping shaft 14 at the center position, the clamping shaft 14 is fixed in a rotating shaft 22 through a rotating support sleeve 15 and is concentric with the rotating shaft 22, the other end of the clamping shaft 14 extends into the swing cylinder 6 and is connected with a movable V-shaped block 23, a fixed V-shaped block 25 is fixed on the inner wall of the swing cylinder 6 and is symmetrical with the movable V-shaped block 23, and an ampoule bottle 24 is placed in the swing cylinder and is placed between the movable V-shaped block 23 and the fixed V-shaped block 25. The clamping cylinder 18 drives the movable V-shaped block 23 to move left and right, so that the ampoule bottle 24 can be clamped and released, the driving pin 17 drives the U-shaped fork opening plate 13 to rotate, and the ampoule bottle 24 and the swing cylinder 6 can synchronously swing together. A clamping pressure sensor 19 is mounted on the end of the clamping cylinder 18 remote from the movable furnace cover 20 for detecting the holding pressure of the movable V-block 23 in the clamped state.

The clamping assembly and the swinging assembly form a clamping swinging assembly.

The swing furnace for chalcogenide glass melting needs to be provided with a corresponding control system in the use process.

The specific implementation process is as follows.

The chalcogenide glass raw material is subjected to purification treatment and then is vacuum-sealed in a quartz ampoule bottle 24, and the ampoule bottle 24 is placed in the swing cylinder 6 and is arranged between the movable V-shaped block 23 and the fixed V-shaped block 25. Under the action of the control system, the clamping cylinder 18 acts, the movable V-shaped block 23 is driven to move rightwards through the clamping shifting fork 16, the U-shaped fork opening plate 13 and the clamping shaft 14, and the ampoule bottle 24 is clamped and fixed between the movable V-shaped block 23 and the fixed V-shaped block 25. During the actuation of the clamping cylinder 18, the control system monitors the clamping pressure of the ampoule 24 via the clamping pressure sensor 19 and closes the inlet valve of the clamping cylinder 18 when a certain pressure P1, for example 0.3MPa, is reached.

After the raw material clamping is completed, under the action of the control system, the translation cylinder 5 drives the clamping assembly to move rightwards until the movable furnace cover 20 is matched with the furnace shell 1 to realize the sealing of the hearth. During the action of the translation cylinder 5, the control system monitors the holding pressure of the movable furnace lid 20 in the closed state by means of the lid holding pressure sensor 9, and closes the intake valve of the translation cylinder 5 when a certain pressure P2 is reached, for example 0.6 MPa. Then the hearth begins to heat up according to the process requirement, when the melting temperature is reached, the servo motor 10 does forward and reverse reciprocating motion, the swinging cylinder 6 and the ampoule bottle 24 are driven to swing back and forth according to the set speed and angle, and the homogenization treatment of the molten sulfur series raw materials in the bottle is realized. After the melting process is finished, the hearth stops heating, meanwhile, the servo motor 10 runs at a low speed, the swing cylinder 6 stops running when being vertically upwards positioned, when the temperature of the hearth is reduced to the tapping temperature, the translation cylinder 5 drives the movable furnace cover 20 to run leftwards, the swing cylinder 6 is moved out of the hearth, meanwhile, the clamping cylinder 18 drives the movable V-shaped block 23 to move leftwards, the ampoule bottle 24 is in a relaxed state, the ampoule bottle 24 is clamped out in a manual or mechanical arm mode, and the next quenching process is carried out.

In the melting process, if the ampoule bottle 24 has cracks due to the self-quality or collision and the like, the wall of the bottle is broken due to the gas pressure generated by heating and gasifying raw materials in the bottle, the movable V-shaped block 23 moves rightwards, the clamping pressure P1 is obviously reduced relative to a normal value, at the moment, the control system stops heating and swinging of the swinging furnace, and simultaneously starts the air draft device and the alarm device, so that harmful gas or dust is timely drawn out and an alarm signal is sent out.

In the melting process, if the ampoule bottle bursts due to abnormal rise of the temperature in the furnace, the pressure in the hearth rises sharply at the moment, and when the pressure is greater than the holding pressure P2 of the movable furnace cover, the movable furnace cover 20 pops open instantly to release the pressure, so that the hearth is prevented from exploding, and meanwhile, the swinging furnace stops heating and swings and starts the air draft device and the alarm device.

Compared with the prior art, the invention has the following beneficial effects:

(1) The automatic clamping and automatic stopping of the raw material container in the chalcogenide glass melting process are realized, the automatic operation matched with the melting process is convenient to perform, and the production efficiency is greatly improved;

(2) The automatic identification and treatment when raw materials leak in the melting process are realized, and the environmental pollution is avoided;

(3) When the temperature in the furnace rises abnormally and leads to the raw material container to burst, the furnace cover can be automatically bounced open to release the pressure, and safety accidents are avoided.

Claims

1. The utility model provides a chalcogenide glass smelts with swaing stove, includes heating element and swaps the subassembly, its characterized in that: the heating assembly comprises a furnace body and a movable furnace cover (20); the furnace also comprises a translation mechanism for realizing the opening and closing of the movable furnace cover (20) and the furnace body; the swing assembly comprises a swing cylinder (6) and a swing cylinder driving mechanism; the swing cylinder driving mechanism is arranged on the movable furnace cover (20), and the swing cylinder (6) is positioned on the inner side of the movable furnace cover (20).

2. The swing furnace for chalcogenide glass melting according to claim 1, characterized in that: the swing assembly further comprises a clamping assembly; the clamping assembly, the swinging cylinder (6) and the swinging cylinder driving mechanism form a clamping swinging assembly.

3. The swing furnace for chalcogenide glass melting according to claim 2, characterized in that: the furnace body consists of a furnace shell (1), a metal inner container (2) and an exhaust pipe (3); one end of the exhaust pipe (3) is arranged on the inner metal liner (2) and communicated with the inner metal liner, and the other end of the exhaust pipe is connected with the exhaust device.

4. The swing furnace for chalcogenide glass melting according to claim 2, characterized in that: a step-shaped heat preservation lining (21) is arranged on the inner side of the movable furnace cover (20); the furnace shell (1) is provided with a step-shaped furnace door opening matched with the movable furnace cover (20) and the heat-insulating lining (21).

5. The swing furnace for chalcogenide glass melting according to claim 2, characterized in that: the swing cylinder driving mechanism is composed of a servo motor (10), a driving gear (11), a driven gear (12), a rotating shaft (22) and a bearing sleeve (7); the rotary shaft (22) is of a hollow tubular structure and is arranged at the center of the movable furnace cover (20) through a bearing sleeve (7), one end of the rotary shaft (22) is connected with the swinging cylinder (6) through a through hole at the centers of the movable furnace cover (20) and the heat-insulating lining (21), and the other end of the rotary shaft is connected with the center of the driven gear (12); the servo motor (10) is fixedly arranged on the movable furnace cover (20) and is connected with the driven gear (12) through the driving gear (11).

6. The swing furnace for chalcogenide glass melting according to claim 5, characterized in that: the clamping assembly consists of a clamping cylinder (18), a clamping shifting fork (16), a U-shaped fork opening plate (13), a transmission pin (17), a clamping shaft (14), a rotary supporting sleeve (15), a movable V-shaped block (23) and a fixed V-shaped block (25); wherein, the clamping cylinder (18) is fixedly arranged on the outer side of the movable furnace cover (20); the U-shaped fork plate (13) is cylindrical, a groove is formed in the middle of the cylindrical surface, and the U-shaped fork plate is arranged on the driven gear (12) through a transmission pin (17); one end of the clamping shifting fork (16) is inserted into the groove of the U-shaped fork opening plate (13), and the other end of the clamping shifting fork is connected with an output shaft of the clamping cylinder (18); the clamping shaft (14) is fixed in the rotating shaft (22) through a rotating support sleeve (15), one end of the clamping shaft is vertically connected with the U-shaped fork plate (13), and the other end of the clamping shaft extends into the swinging cylinder (6) and is connected with the movable V-shaped block (23); the fixed V-shaped block (25) is fixed on the inner wall of the swing cylinder (6) and is matched with the movable V-shaped block (23).

7. The swing furnace for chalcogenide glass melting according to any one of claims 1 to 6, characterized in that: the translation mechanism is composed of a linear guide rail (8) and a translation cylinder (5); the movable furnace cover (20) is vertically arranged on the linear guide rail (8) and is connected with the moving slide block of the translation cylinder (5) through a connecting component.

8. The swing furnace for chalcogenide glass melting according to claim 7, wherein: and one end of the translation cylinder (5) far away from the furnace body is provided with a furnace cover holding pressure sensor (9).

9. The swing furnace for chalcogenide glass melting according to claim 6, characterized in that: one end of the clamping cylinder (18) far away from the movable furnace cover (20) is provided with a clamping pressure sensor (19).

10. The swing furnace for chalcogenide glass melting according to any one of claims 1 to 6 and 8 to 9, characterized in that: the furnace body and the translation mechanism are fixed on the mounting bottom plate (4); the movable furnace cover (20) is arranged on the translation mechanism; the swinging cylinder (6) and the swinging cylinder driving mechanism are arranged on the movable furnace cover (20).