CN215440200U

CN215440200U - Low-stress high-generation substrate glass online annealing equipment

Info

Publication number: CN215440200U
Application number: CN202120270382.5U
Authority: CN
Inventors: 李淼; 徐莉华; 王答成; 王涛
Original assignee: Irico Display Devices Co Ltd
Current assignee: Irico Display Devices Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-01-07
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses low-stress high-generation substrate glass online annealing equipment which comprises a plurality of annealing furnace units which are arranged in parallel, wherein adjacent annealing furnace units are not in contact, a gap between adjacent annealing furnace units is a substrate glass passageway, each annealing furnace unit comprises a plurality of unit shells which are stacked in sequence, the outer walls of the tops of the unit shells are detachably connected with baffles, the baffles are detachably connected with the adjacent unit shells, the unit shells are of a structure with openings at two ends, heating bricks are arranged in the inner cavities of the unit shells, and soaking plates are arranged on the unit shells positioned in the substrate glass passageway. The utility model has simple processing and manufacturing, easy assembly and high equipment expandability, and simultaneously, the structure of the utility model is beneficial to the adjustment of process operation and can anneal the glass substrate on line.

Description

Low-stress high-generation substrate glass online annealing equipment

Technical Field

The utility model belongs to the technical field of glass substrate manufacturing, and particularly belongs to low-stress high-generation substrate glass online annealing equipment.

Background

The substrate glass needs to be annealed after being formed so as to eliminate the thermal stress generated in the uneven temperature reduction process of the glass. High quality substrate glass requires that the glass have a low stress grade. Non-uniform stress in the substrate glass causes a reduction in the strength of the glass and even affects its optical uniformity, reducing its subsequent processing and use properties.

In the prior art, the annealing equipment structure of the substrate glass has rough control on the annealing process, secondary annealing is often needed to reduce the internal stress of the glass, and a large amount of energy and manpower are consumed. As the size of the substrate glass is increased, an annealing apparatus for in-line one-time annealing is increasingly required.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides the low-stress high-generation substrate glass online annealing equipment, which solves the problems that the annealing equipment in the prior art is rough in annealing process, needs secondary annealing to reduce the internal stress of glass, and consumes a large amount of energy and manpower.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a low stress high generation base plate glass online annealing equipment, includes a plurality of parallel arrangement's annealing stove unit, contactless between the adjacent annealing stove unit, and the clearance between the adjacent annealing stove unit is the base plate glass passageway, annealing stove unit includes a plurality of piled up unit shell in proper order, and all detachable on the top outer wall of unit shell is connected with the baffle, and the connection can be dismantled to baffle and adjacent unit shell, and the unit shell is both ends open structure, is provided with the heating brick in the inner chamber of unit shell, is located and is provided with the soaking plate on the unit shell in base plate glass passageway.

Furthermore, an insulating brick is arranged in the inner cavity of the unit shell, the insulating brick is of a concave structure, the heating brick is arranged in a groove of the insulating brick, and a gap is reserved between the opening end of the groove of the insulating brick and the inner cavity of the unit shell.

Furthermore, the end face of the heating brick is provided with a heating wire groove, and a heating wire is wound in the heating wire groove.

Further, adjacent annealing furnace units are connected through annealing furnace side plates, and the annealing furnace side plates cover the openings of the unit shells.

Furthermore, the annealing furnace side plate comprises a first metal plate, a middle heat-insulating layer and a second metal plate which are sequentially stacked.

Furthermore, a plurality of openings are formed on the side plate of the annealing furnace.

Further, the soaking plate is made of ceramic materials.

Furthermore, the insulating brick is an alumina hollow brick.

Compared with the prior art, the utility model has at least the following beneficial effects:

the utility model provides low-stress high-generation substrate glass online annealing equipment, which controls heat flow in a region by detachably arranging a connecting baffle on the outer wall of the top of a unit shell, reduces heat flow disturbance and stabilizes the heat flow, so that substrate glass is heated more uniformly when passing through a substrate glass passageway, and simultaneously, uneven heat radiation of a heating brick is converted into uniform heat radiation through a vapor chamber arranged on the outer wall of the unit shell, so that the surface of the substrate glass passing through the substrate glass passageway is uniformly heated in the transverse direction.

Furthermore, the insulating brick is arranged in the inner cavity of the unit shell, so that the heating brick is protected, the insulating effect is achieved, the heat leakage can be reduced, and the energy consumption is saved.

Furthermore, the annealing furnace side plate enables the middle heat-insulating layer to be pressed between the first metal plate and the second metal plate, so that heat insulation is performed on the inner cavity of the unit shell, and heat loss is reduced.

Furthermore, the plurality of holes arranged on the side plates of the annealing furnace facilitate the placement of rollers for clamping the substrate glass and the observation of the working condition of the annealing furnace unit and the condition of the substrate glass.

Drawings

FIG. 1 is an isometric view of an annealing furnace without side panels;

FIG. 2 is a front view of an annealing furnace;

FIG. 3 is a side view of an annealing furnace;

FIG. 4 is a top view of an annealing furnace;

FIG. 5 is a partial view taken at A of FIG. 1;

FIG. 6 is a schematic view showing the structure of a side plate of an annealing furnace;

FIG. 7 is a longitudinal temperature profile of an annealing process;

FIG. 8 is a lateral power profile of an annealing process;

in the drawings: 1-baffle plate, 2-unit shell, 3-insulating brick, 4-heating brick, 5-substrate glass, 6-soaking plate and 7-annealing furnace side plate;

x1 is the temperature change of the heating brick in the upper annealing zone and x2 is the temperature change of the heating brick in the lower annealing zone.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in figures 1 and 2, the utility model provides low-stress high-generation substrate glass online annealing equipment which comprises a plurality of annealing furnace units and annealing furnace side plates 7, wherein each annealing furnace unit is arranged in parallel, adjacent annealing furnace units are not contacted, as shown in figures 3 and 4, a gap between every two adjacent annealing furnace units is a substrate glass passage, the annealing furnace units are divided into an upper annealing area and a lower annealing area according to the whole length of the annealing furnace units, and the length of the upper annealing area is 4-6 times of the length of the lower annealing area;

in this embodiment, the annealing furnace unit includes a baffle 1, a unit casing 2, insulating bricks 3, heating bricks 4, and soaking plates 6.

Specifically, the unit housing 2 is made of heat-resistant steel material and used for mechanical support, two ends of the unit housing 2 are opened, and a plurality of unit housings 2 are stacked in sequence;

baffle 1 is located the top of every unit shell 2, and baffle 1 and unit shell 2 can be dismantled the connection, and adjacent unit shell 2 passes through baffle 1 contact, and baffle 1 and adjacent unit shell 2 can be dismantled the connection through the bolt, and baffle 1 is used for controlling the heat current in an area for reduce the effect of heat current disturbance and stable heat current, baffle 1 adopts heat-resisting and adiabatic combined material.

The insulating brick 3 is placed in the inner cavity of the unit shell 2, the insulating brick 3 has certain strength and insulating effect, heat leakage is reduced, energy consumption is saved, the insulating brick 3 is of a concave structure, the heating brick 4 is placed in the groove of the insulating brick 3, and a gap is reserved between the opening end of the groove of the insulating brick 3 and the inner cavity of the unit shell 2; the insulating brick 3 is made of alumina hollow bricks or zirconia hollow bricks and the like.

As shown in fig. 5, the heating brick 4 is composed of a plurality of heating units, the grooves of the insulating brick 3 are filled with the plurality of heating bricks 4 in linear arrangement, two ends of the heating brick 4 respectively face the openings of two ends of the unit shell 2, heating wire grooves are arranged at two ends of the heating brick 4, heating wires are wound in the heating wire grooves, and the heating wires are platinum or iron-chromium-aluminum resistance wires.

The soaking plate 6 is made of ceramic material with good thermal conductivity, is plate-shaped, and is manufactured by adopting a cold isostatic pressing process. The soaking plate 6 is positioned on the outer side of the unit shell 2 and has a certain space with the heating brick 4, and specifically, the soaking plate 6 is positioned on the outer wall of the unit shell 2 on the substrate glass passageway. The uneven heat radiation of the single heating brick 4 can be converted into soaking heat radiation, so that the surface of the substrate glass 5 on the substrate glass passageway is uniformly heated in the transverse direction.

As shown in fig. 6, the annealing furnace side plate 7 is formed by sequentially stacking three materials, namely a first metal plate, an intermediate insulating layer and a second metal plate, to form a sandwich structure, and is used for insulating the openings of two sides of two adjacent annealing furnace units, and the annealing furnace side plate 7 covers the opening of the unit housing 2.

The annealing method using the annealing apparatus of the present invention includes the temperature control in the longitudinal direction of the whole annealing furnace and the lateral power control of the single unit case 2;

the longitudinal temperature control of the entire annealing furnace is the temperature history of the entire process from the time when the substrate glass 5 flows into the annealing furnace from the forming region to the time when it flows out of the annealing furnace. The inlet of the annealing furnace unit is towards the outlet direction of the annealing furnace unit, the length of the annealing furnace unit is sequentially divided into an upper annealing zone and a lower annealing zone, as shown in fig. 7, wherein X1 is the temperature change of the heating bricks in the upper annealing zone, X2 is the temperature change of the heating bricks in the lower annealing zone, the inlet of the annealing furnace unit is towards the outlet direction of the annealing furnace unit, the temperature of the heating bricks 4 in each unit housing 2 is in a descending trend, and the temperature descending rate of the heating bricks 4 in the upper annealing zone is lower than that of the heating bricks 4 in the lower annealing zone.

The transverse power of the single unit shell 2 is controlled to be symmetrically distributed from the near end of the annealing furnace to the far end of the annealing furnace, meanwhile, because the heat dissipation of the two side surfaces of the annealing furnace is larger than that of the middle part, the power of the two ends is larger, namely the heating power of the two ends of the heating brick 4 is the same, and the heating power of the two ends of the heating brick 4 is larger than the heating power between the two ends of the heating brick 4. The overall lateral power distribution is shown in fig. 8. It is noted that this distribution is only schematic and does not represent the best process conditions.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a low stress high generation base plate glass online annealing equipment, its characterized in that, including a plurality of parallel arrangement's annealing stove unit, contactless between the adjacent annealing stove unit, the clearance between the adjacent annealing stove unit is the base plate glass passageway, annealing stove unit includes a plurality of unit shell (2) piled up in proper order, all can dismantle on the top outer wall of unit shell (2) and be connected with baffle (1), and baffle (1) and adjacent unit shell (2) can be dismantled and connect, and unit shell (2) are both ends open structure, are provided with in the inner chamber of unit shell (2) and heat brick (4), are provided with soaking plate (6) on unit shell (2) that are located base plate glass passageway.

2. The on-line annealing equipment for low-stress advanced substrate glass according to claim 1, wherein an insulating brick (3) is further arranged in the inner cavity of the unit housing (2), the insulating brick (3) is of a concave structure, the heating brick (4) is arranged in the groove of the insulating brick (3), and a gap is reserved between the opening end of the groove of the insulating brick (3) and the inner cavity of the unit housing (2).

3. The on-line annealing equipment for low-stress advanced substrate glass according to claim 1, wherein the end face of the heating brick (4) is provided with a heating wire groove, and a heating wire is wound in the heating wire groove.

4. A low stress advanced substrate glass in-line annealing apparatus according to claim 1, wherein adjacent lehr units are connected by lehr side panels (7), the lehr side panels (7) covering the opening of the unit housing (2).

5. The in-line annealing apparatus for low-stress advanced substrate glass according to claim 4, wherein said lehr side plate (7) comprises a first metal plate, an intermediate insulating layer and a second metal plate laminated in this order.

6. A low stress advanced substrate glass on-line annealing equipment according to claim 4, wherein the side plate (7) of the annealing furnace is opened with several openings.

7. The in-line annealing equipment for low-stress advanced substrate glass according to claim 1, wherein the soaking plate (6) is a ceramic material.

8. The on-line annealing equipment for low-stress advanced substrate glass according to claim 2, wherein the insulating brick (3) is an alumina hollow brick.