CN216273743U - Stress relieving device and annealing device for flexible glass - Google Patents
Stress relieving device and annealing device for flexible glass Download PDFInfo
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- CN216273743U CN216273743U CN202121489941.8U CN202121489941U CN216273743U CN 216273743 U CN216273743 U CN 216273743U CN 202121489941 U CN202121489941 U CN 202121489941U CN 216273743 U CN216273743 U CN 216273743U
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Abstract
The utility model provides a stress relieving device and an annealing device for flexible glass, which have the advantages of simple equipment structure, convenience and quickness in installation and more detailed thermal field, and are matched with a cooling air duct, so that the residual local tensile stress and compressive stress of the flexible glass are effectively relieved, and the flexible glass is ensured to meet the technological requirements. A stress relieving device for flexible glass comprises a heat preservation box, a heating coil and a circuit controller; the heating coils are arranged on the outer surface of one side of the heat preservation box and are uniformly arranged side by side along the length direction of the heat preservation box; the interior of the heat preservation box is filled with heat preservation materials; the heating coil and the circuit controller form a heating loop. A flexible glass annealing device comprises a heating area, a constant temperature area, a cooling area and a stress relief area, wherein the heating area, the constant temperature area and the cooling area are arranged along the movement direction of glass; the stress relieving area comprises a first stress relieving area and a second stress relieving area which are arranged above and below the glass in a mirror symmetry manner; the stress relief zone is formed by at least one stress relief means.
Description
Technical Field
The utility model relates to the field of flexible glass manufacturing, in particular to a stress relieving device and an annealing device for flexible glass.
Background
In a flexible glass making process, a glass melt is supplied to a trough in a refractory shaped body. The molten glass overflows the top of the trough on both sides of the body to form two glass sheet halves, which flow downward and then inward along the outer surface of the forming body, along the flow-directing plates at both ends of the bottom of the forming body, meet at the bottom or root of the forming body where they fuse together to form a single glass sheet. The glass is changed from liquid state to solid state in the forming process, the temperature of the glass leaving the forming body is reduced after the glass plate is formed in the solid state, particularly the temperature of the outer layer is reduced faster than that of the inner side, and the glass generates thermal stress due to the temperature difference between the inner side and the outer side.
In the prior art, stress is eliminated through an annealing furnace, a plurality of heating devices are arranged in the annealing furnace in the width direction of glass, each heating device divides the glass into heating zones, the heat of the heating devices is adjusted to generate radiant heat on the surface of the glass, and annealing of each section of the glass is completed through the heating zones. However, the thickness of the flexible glass is very thin, and some other components cause that the thermal stress and the structural stress are different from those of the general glass, the traditional stress relief device cannot completely relieve the residual tensile stress and the compressive stress in the flexible glass, and the residual tensile stress and the compressive stress are more complicated in distribution, while the heating area division in the prior art is not fine enough, even if the processing time is prolonged, the residual tensile stress and the compressive stress cannot be well relieved, so that the glass is easy to break and cannot be normally produced and used.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a stress relieving device and an annealing device for flexible glass, which have the advantages of simple equipment structure, convenience and quickness in installation and more delicate thermal field, and are matched with a cooling air duct, so that the residual local tensile stress and compressive stress of the flexible glass are effectively relieved, and the flexible glass is ensured to meet the technological requirements.
The utility model is realized by the following technical scheme:
a stress relief device for flexible glass, comprising: the heat preservation box, the heating coil and the circuit controller;
the heating coils are arranged on the outer surface of one side of the heat preservation box and are uniformly arranged side by side along the length direction of the heat preservation box; the interior of the heat-insulating box is filled with heat-insulating materials;
the heating coil is connected with the circuit controller to form a heating control loop.
Preferably, a plurality of the heating coils are connected in series to form a group of heating modules, and the plurality of groups of heating modules are respectively connected with the plurality of circuit controllers to respectively form corresponding control loops.
Preferably, the cooling device also comprises a plurality of cooling air channels which are uniformly arranged on the heat preservation box in a penetrating way; the outlet of the cooling air duct is arranged at one side of the heat preservation box, which is provided with the heating coil.
Preferably, the heating coils and the cooling air outlet channel are sequentially and alternately arranged along the length direction of the heat preservation box.
Preferably, one side of the heat preservation box is provided with a groove shape, and the heating coil is arranged in the groove.
Preferably, the heating coil is an iron-chromium-aluminum heating wire.
A flexible glass annealing device comprises a heating area, a constant temperature area, a cooling area and a stress relief area, wherein the heating area, the constant temperature area and the cooling area are sequentially arranged along the movement direction of glass;
the stress relieving area comprises a first stress relieving area and a second stress relieving area which are arranged above and below the glass in a mirror symmetry mode respectively;
the first stress relief area and the second stress relief area are both formed by at least one stress relief device;
the stress relief device is arranged along the width direction of the glass to form a stress relief area.
Preferably, the stress relief device is arranged adjacent to the heating device on the same side in the heating area, compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides a stress relieving device for flexible glass, which comprises a heat preservation box, a heating coil and a circuit controller. The heating coils are uniformly arranged side by side along the length direction of the outer surface of one side of the heat preservation box, so that the uniformity of the distribution of the thermal field on the surface of the glass can be ensured. The heat preservation box is filled with heat preservation materials and is arranged close to the heating coil, so that heat dissipation loss is effectively avoided.
Furthermore, a plurality of heating coils are connected in series to form a group of heating units to form a control loop, so that the cost of the power loop is saved. The multiple groups of heating units are respectively connected with the multiple circuit controllers to respectively form corresponding control loops, and each control loop can independently control the on-off and the size of the control loop, so that the temperature distribution of the thermal field corresponds to the stress defect position of the glass plate, and the heating control is more delicate and changeable.
Furthermore, a plurality of cooling air ducts are arranged along the length direction of the heat preservation box and penetrate through the box body of the heat preservation box. The cooling air duct can cool the glass according to the requirement so as to eliminate the compressive stress which cannot be reduced by heating but still exists.
Furthermore, the heating coil and the cooling air duct are arranged at intervals along the length direction of the heat preservation box. The distribution of the thermal field for eliminating the local tensile stress and the distribution of the cold field for eliminating the local compressive stress are ensured to be more uniform.
Further, one side of the heat-insulating box may be formed in a groove shape, and the heating coil is disposed in the groove. The heating coil can be prevented from being collided by other foreign matters such as glass, the heating coil is better protected, and the service life of the heating coil is prolonged.
Furthermore, the heating coil is an iron-chromium-aluminum heating wire which can be set into different shapes, so that different working condition requirements are met, and the use cost of the equipment can be effectively controlled.
The utility model also provides a flexible glass annealing device which comprises at least one stress relief device. The stress relief device is arranged along the width direction of the glass, and forms stress relief areas above and below the mirror surface of the glass in a mirror symmetry mode. The stress relief area is arranged between the heating area and the constant temperature area in the original annealing furnace, a more detailed thermal field can be provided in the width direction of the glass, the defect that stress relief caused by less distribution of the original heating units is not detailed is overcome, stress adjustment is more detailed, and residual stress is effectively eliminated. The stress relieving areas are arranged on two sides of the glass mirror surface, so that the stress of the glass can be relieved more thoroughly, and the flexible glass can meet the technological requirements.
Drawings
FIG. 1 is a diagram of a flexible glass stress relief device in an embodiment of the present invention.
FIG. 2 is a three-dimensional schematic view of the installation of a flexible glass stress relief device in an embodiment of the present invention.
FIG. 3 is a schematic structural view of a flexible glass annealing apparatus according to the present invention.
In the figure: a glass molding 1, a plate glass 2, a glass roll 3, a first heating zone 41, a second heating zone 42, a first stress relief zone 51, a second stress relief zone 52, a first constant temperature zone 61; a second constant temperature area 62, a first cooling area 71, a second cooling area 72, an annealing furnace 8, a heating unit 411, a stress relieving device 511, a heat preservation box 512, a heating coil 513, a cooling air duct 514 and a control circuit 515.
Detailed Description
The present invention will now be described in further detail with reference to the attached drawings, which are illustrative, but not limiting, of the present invention.
As shown in fig. 1, a stress relief device for flexible glass comprises: a heat-preserving box 512, a heating coil 513 and a circuit controller 515.
A plurality of heating coils 513 are uniformly arranged in parallel along the length direction of the outer surface of one side of the heat preservation box 512; the heat preservation box 512 is filled with heat preservation materials, so that heat dissipation loss is effectively avoided. One side of the heat-retaining case 512 may be further provided in a groove shape, and the heating coil 513 is disposed in the groove. Can effectively protect the heating coil from being damaged by other foreign matters such as glass, better protect the heating coil and prolong the service life of the heating coil
The heating coils 513 are connected in series, and the series circuit of the heating coils is electrically connected with the circuit controller 515 through a lead to form a control loop, so that the cost of the power loop is saved. The number of the heating coils 513 is 1 to 10. The quantity is more than the heating coil of the heating area in the existing equipment, can form multiple thermal fields according to the residual stress distribution, make the stress adjustment more accurate. The material of the heating wire is an iron-chromium-aluminum heating wire. As shown in figure 1, the heating wire can be arranged in a spiral shape, the length of the heating wire is prolonged as far as possible on the premise that the space of the equipment is limited, the heating requirement of the working condition is met, and the use cost of the equipment can be effectively controlled.
The heating coils 513 are connected in series to form a group of heating modules, the heating modules are respectively connected with the circuit controllers (515) to form corresponding control loops, and the on-off and the size of each loop can be independently controlled to form various control loops and provide various detailed thermal fields.
The stress relieving device further comprises a plurality of cooling air ducts 514, wherein the cooling air ducts 514 penetrate through the heat preservation box 512 and are uniformly arranged in the length direction of the heat preservation box 512 for relieving residual compressive stress, and the holes are sealed at ordinary times. The outlet of the cooling air duct 514 is arranged at the side of the heat preservation box 512 where the heating coil 513 is arranged. The number of the cooling air ducts 514 is 1-10, so that the residual compressive stress distributed on the glass can be effectively eliminated.
In this embodiment, the heating coils 513 and the cooling air ducts 514 are sequentially and alternately arranged along the length direction of the heat preservation box, so that the distribution of the hot field and the distribution of the cold field are more uniform.
As shown in fig. 2 to 3, a flexible glass annealing apparatus includes a heating zone, a constant temperature zone and a cooling zone which are sequentially arranged along a glass moving direction, and a stress relieving zone which is arranged between the heating zone and the constant temperature zone. The stress relief region comprises a first stress relief region 51 and a second stress relief region 52 arranged mirror-symmetrically above and below the glass, respectively; both the first stress relief region 51 and the second stress relief region 52 are formed by stress relief means along the width direction of the glass; in this embodiment, the stress relief means is disposed adjacent to the same side of the heating zone.
The stress relief regions are arranged above and below the glass mirror surface, so that residual stress of the glass can be relieved more thoroughly. The stress relief zone is located behind the heating zone to compensate for lack of fine stress relief of the heating zone. Because the glass is converted from liquid state to solid state, and the glass is clamped by an edge roller and the like, the structural stress, the mechanical stress and the thermal stress in the glass are very large, the first section of heating zone in the annealing furnace is used for eliminating most of the stress, then the stress eliminating device eliminates the residual tensile stress of the glass plate through further more detailed heating, and the compressive stress which still cannot be eliminated after further heating is eliminated again through a cooling mode. And then, the glass passes through the heat preservation area until entering the cooling area to be cooled and then is discharged from the furnace. A plurality of heating units 411 are sequentially arranged in the heating zone in the glass width direction.
The installation and main working process of the utility model are as follows:
FIG. 3 illustrates a flexible glass annealing apparatus incorporating the stress relief apparatus of the present invention. The sheet glass 2 is shaped in the glass shaped body 1, passes through the glass rolls 3, and then enters the lehr body 8. In the lehr furnace body 8, the glass passes through a heating zone, a stress relief zone, a hold zone, and a cooling zone in that order. The heating zones comprise a first heating zone 41 and a second heating zone 42, the stress relieving zones comprise a first stress relieving zone 51 and a second stress relieving zone 52, the heat preservation zones comprise a first heat preservation zone 61 and a second heat preservation zone 62, and the cooling zones comprise a first cooling zone 71 and a second cooling zone 72. The first areas of the functions are positioned above the glass mirror surface, and the second areas of the functions are symmetrically arranged below the glass mirror surface.
In the using process, in order to save the cost of the electric power circuit, 3 or 4 heating coils can be connected in series, the electric power connection is connected to the head and the tail of the coils connected in series to form a control circuit, and the control circuit adopts a silicon controlled rectifier power regulator to adjust the opening degree. When the device is used, the number of each series loop coil is adjusted according to the stress detection result of the glass plate, so that the heating area corresponds to a tensile stress area which needs to be eliminated by the glass plate. And then adjusting the electric power opening degree to control the whole temperature of the thermal field to eliminate the stress, and opening an access hole of high-pressure air on the heat preservation box when the stress cannot be eliminated when the power is closed, wherein cooling air can be accessed to the access hole to reduce the temperature so as to eliminate the compression stress.
Claims (8)
1. A stress relief device for flexible glass, comprising: a heat preservation box (512), a heating coil (513) and a circuit controller (515);
the heating coils (513) are arranged on the outer surface of one side of the heat preservation box (512), and the heating coils (513) are uniformly arranged side by side along the length direction of the heat preservation box (512); the heat preservation box (512) is filled with heat preservation materials;
the heating coil (513) is connected with the circuit controller (515) to form a heating control loop.
2. The stress relieving device of claim 1, wherein a plurality of the heating coils (513) are connected in series to form a set of heating modules, and the sets of heating modules are respectively connected with a plurality of circuit controllers (515) to form corresponding control loops.
3. The stress relief device for flexible glass as claimed in claim 1, further comprising a plurality of cooling air ducts (514) uniformly penetrating the insulating box (512); the outlet of the cooling air duct (514) is arranged at one side of the heat preservation box (512) where the heating coil (513) is arranged.
4. The stress relief device for flexible glass as claimed in claim 3, wherein the heating coils (513) and the cooling air ducts (514) are alternately arranged in sequence along the length direction of the thermal insulation box.
5. The stress relief device for flexible glass as defined in claim 1, wherein one side of said thermal box (512) is formed in a groove shape, and said heating coil (513) is disposed in said groove.
6. Stress relief device for flexible glass according to claim 1, characterized in that the heating coil (513) is an iron-chromium-aluminum heating wire.
7. The flexible glass annealing device is characterized by comprising a heating area, a constant temperature area and a cooling area which are sequentially arranged along the movement direction of glass, and a stress relief area arranged between the heating area and the constant temperature area;
the stress relieving area comprises a first stress relieving area (51) and a second stress relieving area (52) which are arranged above and below the glass in a mirror symmetry mode respectively;
-said first stress relief zone (51) and said second stress relief zone (52) are each constituted by at least one stress relief means according to any one of claims 1 to 6;
the stress relief device is arranged along the width direction of the glass to form a stress relief area.
8. The flexible glass annealing apparatus according to claim 7, wherein the stress relief device is disposed adjacent to the heating device on the same side of the heating zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489941.8U CN216273743U (en) | 2021-06-30 | 2021-06-30 | Stress relieving device and annealing device for flexible glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121489941.8U CN216273743U (en) | 2021-06-30 | 2021-06-30 | Stress relieving device and annealing device for flexible glass |
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| Publication Number | Publication Date |
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| CN216273743U true CN216273743U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121489941.8U Active CN216273743U (en) | 2021-06-30 | 2021-06-30 | Stress relieving device and annealing device for flexible glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115043581A (en) * | 2022-06-30 | 2022-09-13 | 绍兴旗滨玻璃有限公司 | Method for prolonging annealing cellar and annealing cellar |
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2021
- 2021-06-30 CN CN202121489941.8U patent/CN216273743U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115043581A (en) * | 2022-06-30 | 2022-09-13 | 绍兴旗滨玻璃有限公司 | Method for prolonging annealing cellar and annealing cellar |
| CN115043581B (en) * | 2022-06-30 | 2023-11-24 | 绍兴旗滨玻璃有限公司 | Method for prolonging annealing cellar and annealing cellar |
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Effective date of registration: 20230109 Address after: 712000 Western Zhigu Park, high tech Industrial Development Zone, Qindu District, Xianyang City, Shaanxi Province Patentee after: Shaanxi Rainbow Industrial Intelligent Technology Co.,Ltd. Patentee after: CAIHONG GROUP Co.,Ltd. Address before: 712000 Western Zhigu Park, high tech Industrial Development Zone, Qindu District, Xianyang City, Shaanxi Province Patentee before: Shaanxi Rainbow Industrial Intelligent Technology Co.,Ltd. |