CN216808598U

CN216808598U - Glass crystallization device

Info

Publication number: CN216808598U
Application number: CN202220353493.7U
Authority: CN
Inventors: 李青; 李赫然; 李刚; 赵志龙; 郭志胜; 张克俭; 王海周; 侯小军
Original assignee: Henan Xuyang Photoelectric Technology Co Ltd; Beijing Yuanda Xinda Technology Co Ltd
Current assignee: Henan Xuyang Photoelectric Technology Co Ltd; Beijing Yuanda Xinda Technology Co Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-06-24
Anticipated expiration: 2032-02-21

Abstract

The utility model relates to the field of glass manufacturing, and discloses a glass crystallization device which comprises a tunnel furnace (1) and a conveying device (3), wherein the conveying device (3) comprises a movable tray (30) for placing a glass plate (2), and the tray (30) is arranged to be capable of conveying the glass plate (2) into the tunnel furnace (1) for crystallization heat treatment and conveying the glass plate (2) subjected to crystallization heat treatment out of the tunnel furnace (1). The glass crystallization device realizes the transportation of the glass plate in the crystallization furnace through the movement of the tray, and the glass plate and the tray always keep moving at the same speed in the transportation process without relative friction between the glass plate and the tray, thereby avoiding the possibility that the surface of the glass plate is scratched by the tray in the crystallization process and ensuring the quality of products.

Description

Glass crystallization device

Technical Field

The utility model relates to the field of glass manufacturing, in particular to a glass crystallization device.

Background

The microcrystalline glass is a multi-phase complex in which a large number of fine crystals are uniformly precipitated in glass by performing crystallization heat treatment under a certain temperature system to form a dense microcrystalline phase and a glass phase. By controlling the number of types and sizes of the microcrystals, transparent microcrystalline glass, microcrystalline glass with zero expansion coefficient and surface-strengthened microcrystalline glass can be obtained. The crystal production process of the microcrystalline glass comprises the processes of nucleation, crystallization, annealing and cooling, and the process needs to be completed in a glass crystallization device. The currently used glass crystallization device is a roller way continuous crystallization furnace, which can realize continuous crystallization heat treatment of glass plates, but because glass is continuously conveyed to the crystallization furnace through a roller way, rollers used for conveying the glass plates rub the glass plates when rotating, the glass plates on the surfaces of the rollers are easily scratched, and the quality of products is finally influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a glass plate is easily scratched in the crystallization process in the prior art, and provides a glass crystallization device which can effectively prevent the glass plate from being scratched in the crystallization process and fully ensure the quality of a product.

In order to achieve the above object, the present invention provides a glass crystallization apparatus comprising a tunnel furnace and a conveying device, including a movable tray for placing a glass sheet, the tray being configured to convey the glass sheet into the tunnel furnace for crystallization heat treatment and convey the glass sheet after crystallization heat treatment out of the tunnel furnace.

Preferably, the conveying device comprises a conveying track and a tray support, the conveying track and the tray support are arranged on the outer side of the tunnel furnace, the tray support is movably arranged on the conveying track, part of the tray support penetrates through a guide hole in the tunnel furnace and then extends into the tunnel furnace, the guide hole is arranged to guide the tray support to move in the tunnel furnace, and the tray is fixed on the tray support extending into the tunnel furnace.

Preferably, the tunnel furnace is an annular tunnel furnace provided with an opening, the two ends of the opening are respectively an inlet and an outlet of the tunnel furnace, and the conveying track is a closed annular track extending along the length direction of the tunnel furnace.

Preferably, the tray is provided in plurality and is arranged at intervals along the length direction of the conveying track.

Preferably, the tray is configured to be capable of placing a plurality of the glass sheets simultaneously.

Preferably, the conveying device comprises a driving mechanism for driving the tray support to move along the conveying track, and the driving mechanism is arranged outside the tunnel furnace.

Preferably, the interior of the tunnel furnace comprises a plurality of functional zones along the length direction, and a thermal insulation wall allowing the tray to bear the glass plate to pass through is arranged between the adjacent functional zones.

Preferably, the number of the functional areas is five, and the five functional areas are a heating area, a nucleation area, a crystallization area, an annealing area and a cooling area from the inlet to the outlet in sequence.

Preferably, the glass crystallization apparatus includes a thermal cycling control system for controlling the temperature of the functional zone.

Preferably, the thermal cycle control system includes a heating system for providing heat to the tunnel furnace and a temperature control system for precisely controlling the temperature of the nucleation, crystallization and annealing zones.

Preferably, the heat circulation control system comprises a hot air system for supplying hot air to the heating area to gradually increase the temperature of the heating area.

The glass crystallization device realizes the transportation of the glass plate in the crystallization furnace through the movement of the tray, and the glass plate and the tray always keep moving at the same speed in the transportation process without relative friction between the glass plate and the tray, thereby avoiding the possibility that the surface of the glass plate is scratched by the tray in the crystallization process and ensuring the quality of products.

Drawings

FIG. 1 is a schematic view of a glass crystallization apparatus according to an embodiment of the present invention.

Description of the reference numerals

The method comprises the following steps of 1 tunnel furnace, 10 openings, 101 positioning grooves, 11 inlets, 12 outlets, 13 guide holes, 14 heating areas, 15 nucleation areas, 16 crystallization areas, 17 annealing areas, 18 cooling areas, 2 glass plates, 3 conveying devices, 30 trays, 31 conveying tracks, 32 tray supports and 4 thermal cycle control systems.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, the use of the terms of orientation such as "upper, lower, left, and right" generally refer to upper, lower, left, and right as shown in fig. 1, and "inner and outer" refer to the inner and outer of the outline of the structure.

The utility model provides a glass crystallization device, as shown in figure 1, comprising a tunnel furnace 1 and a conveying device 3, wherein the conveying device 3 comprises a movable tray 30 for placing a glass plate 2, and the tray 30 is arranged to convey the glass plate 2 into the tunnel furnace 1 for crystallization heat treatment and convey the glass plate 2 after crystallization heat treatment out of the tunnel furnace 1. Before crystallizing the glass plate, the glass plate 2 to be crystallized is firstly placed on a movable tray 30 of a conveying device 3, the glass plate 2 is conveyed into a tunnel furnace 1 through the tray 30 for crystallization heat treatment, and after the crystallization heat treatment of the glass plate 2, the tray 30 is conveyed out of the tunnel furnace 1 through the glass plate 2. In the whole crystallization process of the glass plate, the glass plate 30 is always positioned on the tray 30, and the glass plate is conveyed in the crystallization furnace through the movement of the tray 30, so that the glass plate and the tray always move at the same speed, and no relative friction occurs between the glass plate and the tray, thereby avoiding the possibility that the surface of the glass plate is scratched by the tray in the crystallization process, and ensuring the quality of products.

Because the temperature in the tunnel furnace 1 is very high, in order to avoid the tray 30 from conveying glass plates in the tunnel furnace, the conveying device 3 needs to be cooled, the conveying device 3 comprises a conveying track 31 and a tray support 32 which are arranged outside the tunnel furnace 1, the tray support 32 is movably arranged on the conveying track 31, part of the tray support 32 penetrates through a guide hole 13 in the tunnel furnace 1 and then extends into the tunnel furnace 1, the guide hole 13 is arranged to be capable of guiding the tray support 32 to move in the tunnel furnace 1, and the tray 30 is fixed on the tray support 32 extending into the tunnel furnace 1. In the present embodiment, the conveying rail 31 is located below the tunnel kiln 1, and the guide holes 13 are opened at the bottom of the tunnel kiln 1 to correspond to the conveying rail 31 up and down to facilitate the movement of the tray support 32. The lower ends of the tray supports 32 are movably disposed on the conveying rails, and the upper ends of the tray supports 32 are located in the guide holes 13 and move along the guide holes 13. The tray 30 and tray support 32 located within the tunnel furnace are made of a high temperature resistant material. By driving the tray support 32 to move on the conveying rail 31, the tray support 32 carries the tray 30 fixed to the upper end thereof to move in the tunnel furnace 1 for the crystallization heat treatment. In the glass plate crystallization process, only the upper end of 32 between tray 30 and the tray is located the tunnel furnace, and conveyor 3's delivery track 31 is located the below of tunnel furnace 1, does not need to contact the high temperature area of tunnel furnace 1, consequently, when using the utility model discloses a glass crystallization device is crystallized to the glass plate, does not need to carry out continuous cooling to heat-labile delivery track 31 and handles, has effectively reduced the loss of energy. In the prior art, when the roller continuous crystallization furnace is used for crystallizing the glass plate, because the roller transmission mechanism for conveying cannot resist high temperature, the spraying areas are required to be arranged on the two sides of the roller to continuously cool the two sides of the roller, which causes loss and waste of a large amount of heat. Compared with the prior art, the glass crystallization device of the utility model reduces the energy loss generated by cooling the roller way in the prior art by arranging the conveying track 31 in the outer side of the tunnel furnace 1, and reduces the production cost of enterprises.

Further, the tunnel furnace 1 is a ring-shaped tunnel furnace provided with an opening 10, both ends of the opening 10 are an inlet 11 and an outlet 12 of the tunnel furnace 1, respectively, and the conveying track 31 is a closed ring-shaped track extending in a length direction of the tunnel furnace 1. At the opening 10 of the tunnel furnace, the glass plate to be crystallized is placed on a tray 30 positioned at the upper end of a tray support 32, the tray support 32 moves along a conveying track 31 to drive the tray 30 to carry the glass plate 2 to enter the tunnel furnace from an inlet 11 of the tunnel furnace 1, after crystallization heat treatment in the tunnel furnace is completed, the glass plate comes out from an outlet 12 of the tunnel furnace and returns to the opening of the tunnel furnace 1, an operator takes the crystallized glass plate down, and the next glass plate to be crystallized is placed on the tray 30 to enter the tunnel furnace 1 for crystallization heat treatment. The tunnel furnace is arranged to be annular, so that the workshop layout is more reasonable, an operator only needs to stand at the opening 10 of the tunnel furnace 1 to place the glass plate to be crystallized and take down the crystallized glass plate, the working procedures are simplified, and the condition that the operator needs to be arranged at the inlet and the outlet of the tunnel furnace respectively to carry out related operation in the prior art is avoided; meanwhile, the layout of the workshop is more reasonable and effective. In order to make the upper end of the tray support 32 at the opening 10 smoothly enter the guiding hole 13 at the bottom of the tunnel furnace 1, a positioning groove 101 connected with the guiding hole 13 in the tunnel furnace 1 is arranged at the opening 10, the positioning groove 101 is connected with the guiding hole 13 to form a closed annular groove, and the annular groove is corresponding to the annular conveying track 31. The positioning groove 101 is arranged to keep the upper end of the tray support 32 in the closed annular groove all the time, so that the tray support 32 can be ensured to enter and exit the tunnel furnace very smoothly.

In order to improve the conveying efficiency of the conveyor 3, a plurality of trays 30 are provided at intervals along the longitudinal direction of the conveying rail 31. A plurality of tray holders 32 corresponding one-to-one to the plurality of trays 30 are provided at intervals on the conveying rail 31. Thus, the space in the tunnel furnace can be fully utilized, and the glass plates on different trays are in different crystallization stages at the same time.

In order to further improve the crystallization efficiency of the tunnel furnace, the space in the tunnel furnace is sufficiently utilized, and the tray 30 is provided so that a plurality of glass plates 2 can be placed at the same time. A plurality of glass plates can be simultaneously conveyed to the tunnel furnace for crystallization on the tray support.

Further, the conveyor 3 includes a driving mechanism for driving the tray support 32 to move along the conveying rail 31, the driving mechanism being disposed outside the tunnel furnace 1. Because the conveying track 31 is located the outside of tunnel furnace, need not cool down, actuating mechanism can adopt multiple transmission mode to drive the tray support and remove on conveying track, for example can select motor and driving chain for use, drives tray support 32 through motor drive driving chain and removes along conveying track 31, also can select the compound mode of motor and hold-in range for use, and the mode of moving along conveying track between the drive tray through motor drive hold-in range. The conveying rail 31 is provided outside the tunnel furnace so that when the driving mechanism is selected, an appropriate driving mechanism is selected according to the needs of the site without considering the influence of high temperature.

Further, the tunnel furnace 1 includes a plurality of functional zones along the length direction thereof, and a thermal insulation wall for allowing the tray 30 to carry the glass sheet 2 therethrough is provided between the adjacent functional zones. The heat insulation wall can realize different settings of the temperatures of a plurality of functional areas.

Further, the functional areas are five, and the five functional areas are a temperature rising area 14, a nucleation area 15, a crystallization area 16, an annealing area 17 and a cooling area 18 from the inlet 11 to the outlet 12. In the utility model, the temperature of the temperature rising region 14 is set to gradually transit from the normal temperature at the inlet 11 to the temperature of the nucleation region 15, the temperature of the nucleation region 15 is controlled to be 650-750 ℃, the temperature of the crystallization region 16 is controlled to be 700-800 ℃, the temperature of the annealing region 17 is controlled to be 550-700 ℃, the temperature of the cooling region is gradually reduced from the annealing region to the outlet 12, and the tapping temperature is not more than 40 ℃. The temperature setting of the following functional areas needs to be set according to specific process requirements.

Further, the glass crystallization apparatus includes a thermal cycle control system 4 for controlling the temperature of the functional zone. The thermal cycle control system 4 can control the heat of the five functional areas to complement each other, so as to achieve the function of fully utilizing the heat in the tunnel furnace. For example, the heat of the crystallization area can be supplemented to the annealing area or the nucleation area adjacent to the crystallization area, so that the heat of the whole tunnel furnace can be reasonably utilized to avoid energy waste caused by excessive heating.

Further, the thermal cycle control system 4 includes a heating system for supplying heat to the tunnel furnace 1 and a temperature control system for precisely controlling the temperatures of the nucleation zone 15, the crystallization zone 16 and the annealing zone 17. The tunnel furnace is heated by a heating system, and the temperatures of a nucleation area, a crystallization area and an annealing area are controlled by a temperature control system according to specific production process requirements, so that the production requirements are met.

The thermal cycle control system 4 includes a hot air system for supplying hot air to the temperature-raising section 13 to gradually raise the temperature of the temperature-raising section 13.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, numerous simple modifications can be made to the technical solution of the utility model, including combinations of the individual specific technical features in any suitable way. The utility model is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A glass crystallization device, characterized in that it comprises a tunnel furnace (1) and a conveyor (3), said conveyor (3) comprising a movable tray (30) for placing glass sheets (2), said tray (30) being arranged so as to be able to convey said glass sheets (2) into said tunnel furnace (1) for crystallization heat treatment and to convey said glass sheets (2) after crystallization heat treatment out of said tunnel furnace (1).

2. The glass crystallization device according to claim 1, wherein the conveying device (3) comprises a conveying track (31) and a tray support (32) which are arranged outside the tunnel furnace (1), the tray support (32) is movably arranged on the conveying track (31), a part of the tray support (32) passes through a guide hole (13) on the tunnel furnace (1) and then extends into the tunnel furnace (1), the guide hole (13) is arranged to guide the tray support (32) to move in the tunnel furnace (1), and the tray (30) is fixed on the tray support (32) extending into the tunnel furnace (1).

3. The glass crystallization apparatus according to claim 2, wherein the tunnel furnace (1) is an annular tunnel furnace provided with an opening (10), both ends of the opening (10) are an inlet (11) and an outlet (12) of the tunnel furnace (1), respectively, and the conveying track (31) is a closed annular track extending in a length direction of the tunnel furnace (1).

4. The glass crystallization apparatus according to claim 3, wherein the tray (30) is provided in plurality and spaced apart along a longitudinal direction of the conveying rail (31).

5. The glass crystallization apparatus according to claim 4, wherein the tray (30) is provided so as to be able to place a plurality of the glass sheets (2) simultaneously.

6. The glass crystallization apparatus according to claim 4, wherein the conveying device (3) comprises a driving mechanism for driving the tray support (32) to move along the conveying rail (31), the driving mechanism being disposed outside the tunnel furnace (1).

7. A glass crystallization device according to claim 3, characterized in that the tunnel furnace (1) comprises a plurality of functional zones along its length, and between adjacent functional zones there are provided thermal barriers allowing the trays (30) to carry the glass sheets (2) therethrough.

8. The glass crystallization device according to claim 7, wherein the number of the functional zones is five, and the five functional zones are a heating zone (14), a nucleation zone (15), a crystallization zone (16), an annealing zone (17), and a cooling zone (18) in this order from the inlet (11) to the outlet (12).

9. The glass crystallization apparatus according to claim 8, characterized in that the glass crystallization apparatus comprises a thermal cycle control system (4) for controlling the temperature of the functional zone.

10. The glass crystallization apparatus according to claim 9, characterized in that the thermal cycle control system (4) comprises a heating system for supplying heat to the tunnel furnace (1) and a temperature control system for precisely controlling the temperature of the nucleation zone (15), the crystallization zone (16) and the annealing zone (17).

11. The glass crystallization apparatus according to claim 9, wherein the thermal circulation control system (4) comprises a hot air system for supplying hot air to the heating zone (14) to gradually raise the temperature of the heating zone (14).