A photovoltaic glass annealing furnace inlet insulation device

Abstract

This utility model discloses a heat preservation device for the inlet of a photovoltaic glass annealing furnace, including an upper panel and a lower panel of the annealing furnace. The inlet of the annealing furnace is located between the upper and lower panels. The first conveyor roller of the annealing furnace is positioned slightly forward of the inlet. The heat preservation device includes an upper lifting rod and a lower lifting rod, with a heat preservation block between them. Frames are fixedly installed above both sides of the inlet, with the upper lifting rods hanging from the frames at both ends. The upper lifting rods are in close contact with the upper panel, and the lower lifting rods are in close contact with the lower panel. The heat preservation block seals the entire inlet of the annealing furnace, and an arc-shaped groove is provided on the heat preservation block at a position corresponding to the first conveyor roller, with the arc-shaped groove fitting snugly against the first conveyor roller. This utility model can isolate the annealing furnace cavity from the external environment, providing good heat preservation and maintaining the thermal environment required for the hot glass after restarting the annealing furnace.

Description

Technical Field

[0001] This utility model relates to auxiliary facilities for photovoltaic glass rolling and forming production, specifically to a photovoltaic glass annealing furnace inlet insulation device. Background Technology

[0002] The production of photovoltaic rolled glass involves pressing molten glass into glass sheets and then annealing them. Each zone of the annealing furnace requires a relatively constant temperature range; exceeding this range will cause problems with the glass sheets. Too high a temperature will result in wave deformation, while too low a temperature will cause scratches and breakage. During production, due to machine malfunctions or quality requirements, the rolling mill or lip brick may be replaced periodically or irregularly. When this happens, no hot glass sheets enter the annealing furnace, and cold air from the outside environment enters the furnace cavity through the inlet. Despite measures such as turning on heaters and turning off fans, the temperature will still drop significantly. Once the rolling mill and lip brick are replaced with hot glass sheets, the shock of the lower temperature will cause the glass sheets to crack, resulting in economic losses and significant production safety hazards.

[0003] The most effective way is to seal and insulate the inlet of the annealing kiln when changing the calender and lip bricks. In the past, most methods used asbestos cloth as a curtain. However, firstly, due to the special structure of the annealing kiln, its first conveyor roller is exposed outside the kiln body, making it difficult to seal tightly and the gaps are large; secondly, the asbestos cloth is thin and has poor insulation effect. At the same time, the asbestos cloth volatilizes a lot of dust at high temperatures, polluting the environment and causing harm to people. Therefore, designing a more suitable insulation mechanism for the annealing kiln inlet is particularly important. Utility Model Content

[0004] In order to solve the problems in the prior art, this utility model provides a heat preservation device for the inlet of a photovoltaic glass annealing furnace.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A photovoltaic glass annealing furnace inlet insulation device includes an upper panel and a lower panel of the annealing furnace located at the inlet end of the annealing furnace, with the annealing furnace inlet located between the upper panel and the lower panel. The first conveying roller of the annealing furnace is located at a position slightly protruding forward from the inlet of the annealing furnace. Its features are:

[0007] The annealing kiln inlet insulation device includes an upper lifting rod and a lower lifting rod, with an insulation block between the upper and lower lifting rods; a frame is fixedly installed on both sides above the annealing kiln inlet, with the upper lifting rod hanging on the frame at both ends, and the upper lifting rod is in close contact with the upper panel of the annealing kiln, and the lower lifting rod is in close contact with the lower panel of the annealing kiln.

[0008] The insulation block seals the entire annealing furnace inlet, and the insulation block has a matching arc-shaped groove at the position corresponding to the first conveyor roller of the annealing furnace. The arc-shaped groove is in close contact with the first conveyor roller of the annealing furnace.

[0009] Preferably, the arc-shaped groove is divided into an intermediate groove portion that is adapted to the body of the first conveyor roller of the annealing kiln and an end groove portion that is adapted to the shaft head of the first conveyor roller of the annealing kiln in the horizontal direction.

[0010] Preferably, the width of the insulation block is greater than the width of the annealing kiln inlet, and the height of the insulation block is greater than the height of the annealing kiln inlet.

[0011] Preferably, the side of the insulation block closest to the annealing furnace inlet is the inner insulation surface, which includes an arc-shaped groove, an upper plane located above the arc-shaped groove, and a lower plane located below the arc-shaped groove.

[0012] Preferably, the side of the insulation block opposite to the inner insulation surface is the outer insulation arc surface, and the left and right ends of the insulation block are insulation end faces.

[0013] Preferably, the insulation block consists of an insulation mesh frame and an insulation layer laid outside the insulation mesh frame, with the upper and lower sides of the insulation mesh frame fixedly connected to the upper lifting rod and the lower lifting rod, respectively.

[0014] Preferably, the insulation layer has a multi-layer structure, including an inner lining layer and outer outer layers attached above and below the inner lining layer.

[0015] Preferably, the outer layer is made of fire-resistant quartz cloth, and the inner lining layer is made of rock wool.

[0016] Preferably, the frame includes a connecting plate fixedly connected to the annealing furnace, and a horizontally extending outward support rib is fixed on the connecting plate. Two upwardly extending limiting ribs are fixed at intervals on the support ribs, and an upper lifting rod installation position is formed between the two limiting ribs.

[0017] The beneficial effects of this utility model are:

[0018] 1. The annealing furnace inlet insulation device of this utility model can isolate the annealing furnace cavity from the external environment, thereby playing a good insulation role. This enables stable control of the annealing furnace temperature when there is no hot glass during the replacement of the rolling mill and lip brick. It maintains the thermal environment required for hot glass after the annealing furnace cavity is restarted, avoiding economic losses and production safety hazards caused by the glass strips breaking.

[0019] 2. In this utility model, the shape of the insulation block is designed to completely cover the annealing kiln inlet and tightly cover the first conveyor roller of the annealing kiln, thereby sealing the entire annealing kiln inlet tightly and achieving good insulation effect.

[0020] 3. This utility model achieves quick installation of the annealing kiln inlet insulation device through the cooperation of the lifting rod and the frame. It can be removed after use, which is very convenient. Attached Figure Description

[0021] Figure 1 A schematic diagram of the annealing furnace inlet;

[0022] Figure 2 This is an installation diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the combination of the upper lifting rod, the insulation mesh frame, and the lower lifting rod in this utility model;

[0025] Figure 5 This is a schematic diagram of the insulation layer in this utility model;

[0026] Figure 6 This is a schematic diagram of the scaffolding in this utility model.

[0027] In the diagram: 1: Insulation mesh frame, 2: Insulation layer, 3: scaffolding, 101-1: Upper lifting rod, 101-2: Lower lifting rod, 102: Outer insulation arc surface, 103: Insulation end face, 104: Arc-shaped groove, 201: Outer surface layer, 202: Inner lining layer, 301: Supporting rib, 302: Limiting rib, 303: Connecting plate, 401: Upper panel of annealing kiln, 402: Lower panel of annealing kiln, 403: Inlet of annealing kiln, 404: First conveyor roller of annealing kiln, 405: Conveyor roller support beam.

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] like Figures 1 to 6 As shown, this embodiment provides a photovoltaic glass annealing furnace inlet insulation device, including an annealing furnace upper panel 401 and an annealing furnace lower panel 402 located at the annealing furnace inlet. The annealing furnace inlet 403 is located between the annealing furnace upper panel 401 and the annealing furnace lower panel 402. The first conveyor roller 404 of the annealing furnace is supported by a conveyor roller support beam 405 at a position slightly protruding forward from the annealing furnace inlet 403. This is the reason why it is difficult to seal tightly with ordinary asbestos cloth.

[0031] The annealing kiln inlet insulation device includes an upper lifting rod 101-1 and a lower lifting rod 101-2. Between the upper lifting rod 101-1 and the lower lifting rod 101-2 is an insulation mesh frame 1. An insulation layer 2 is laid outside the insulation mesh frame 1 to form an insulation block.

[0032] The insulation block is used to seal the entire annealing furnace inlet. The width of the insulation block is greater than the width of the annealing furnace inlet, and the height of the insulation block is greater than the height of the annealing furnace inlet. The side of the insulation block closest to the annealing furnace inlet 403 is the inner insulation surface, and the side opposite the inner insulation surface is the outer insulation arc surface 102. The left and right ends of the insulation block are the insulation end faces 103.

[0033] The inner insulation surface includes an arc-shaped groove 104, an upper surface located above the arc-shaped groove, and a lower surface located below the arc-shaped groove. The arc-shaped groove 104 corresponds to the position of the first conveyor roller 404 of the annealing furnace. The arc-shaped groove 104 is divided into a middle groove portion adapted to the roller body of the first conveyor roller of the annealing furnace and an end groove portion adapted to the shaft head of the first conveyor roller of the annealing furnace in the horizontal direction. The middle groove portion is slightly larger than the radius of the roller body of the first conveyor roller of the annealing furnace and basically matches it, while the end groove portion is slightly larger than the radius of the shaft head of the first conveyor roller of the annealing furnace and basically matches it, so as to achieve complete sealing of the first conveyor roller portion of the annealing furnace.

[0034] During the processing of the insulation mesh frame 1, it is constructed by welding large arc-shaped steel bars (for forming the outer insulation arc surface 102), small arc-shaped steel bars (for forming the insulation end face 103), and several connecting steel bars. The insulation mesh frame 1 is then welded to the upper lifting rod 101-1 and the lower lifting rod 101-2. Then, according to the size and shape of the insulation arc surface 102 and the insulation end face 103, the insulation layer 2 is made by attaching an outer layer 201 to the top and bottom surfaces of the inner lining layer 202 and fixing them together. The outer layer 201 is made of fireproof quartz cloth, and the inner lining layer 202 is made of rock wool.

[0035] Frames 3 are fixedly installed on both sides above the annealing kiln inlet 403. When the calender and lip brick are replaced, the calender and roller table are pulled out of the production line. At this time, the two frames 3 can be welded to both sides above the annealing kiln inlet as fixed positioning points at the top of the entire insulation device.

[0036] Specifically, the frame includes a connecting plate 303 that is fixedly connected to the annealing furnace. A horizontally extending support rib 301 is fixed on the connecting plate 303. Two upwardly extending limiting ribs 302 are fixed at intervals on the support rib 301, and an upper lifting rod installation position is formed between the two limiting ribs 302.

[0037] The assembly and use of this utility model are as follows:

[0038] The two ends of the upper lifting rod 101-1 are respectively hung on the two supports 3. The supporting ribs 301 and limiting ribs 302 of the supports 3 limit and fix the heat preservation device. At this time, the entire upper lifting rod 101-1 is closely attached to the upper panel 401 of the annealing furnace, and the lower lifting rod 101-2 rests on the lower panel 402 of the annealing furnace. In this way, the outer heat preservation arc surface 102 of the inlet heat preservation device covers the entire annealing furnace inlet 403 and the protruding first conveyor roller 404 from the front. At the same time, since the end of the arc-shaped groove 104 is slightly larger than the radius of the conveyor roller shaft and basically matches, it can also be tightly sealed from both sides. This will seal the entire inlet part airtight, thereby playing a good heat preservation role and maintaining the thermal environment required for the hot glass after the annealing furnace is restarted.

[0039] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

[0040] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A photovoltaic glass annealing furnace inlet insulation device, comprising an upper annealing furnace panel and a lower annealing furnace panel located at the inlet end of the annealing furnace, wherein the annealing furnace inlet is located between the upper annealing furnace panel and the lower annealing furnace panel, and the first conveying roller of the annealing furnace is located at a position slightly protruding forward from the annealing furnace inlet, characterized in that: The annealing kiln inlet insulation device includes an upper lifting rod and a lower lifting rod, with an insulation block between the upper and lower lifting rods; a frame is fixedly installed on both sides above the annealing kiln inlet, with the upper lifting rod hanging on the frame at both ends, and the upper lifting rod is in close contact with the upper panel of the annealing kiln, and the lower lifting rod is in close contact with the lower panel of the annealing kiln. The insulation block seals the entire annealing furnace inlet, and the insulation block has a matching arc-shaped groove at the position corresponding to the first conveyor roller of the annealing furnace. The arc-shaped groove is in close contact with the first conveyor roller of the annealing furnace.

2. The photovoltaic glass lehr entry insulation apparatus of claim 1, wherein: The arc-shaped groove is divided into an intermediate groove portion that is adapted to the body of the first conveyor roller of the annealing kiln, and an end groove portion that is adapted to the shaft head of the first conveyor roller of the annealing kiln.

3. The photovoltaic glass lehr entry insulation apparatus of claim 2, wherein: The width of the insulation block is greater than the width of the annealing furnace inlet, and the height of the insulation block is greater than the height of the annealing furnace inlet.

4. The photovoltaic glass annealing furnace inlet insulation device according to claim 3, characterized in that: The side of the insulation block closest to the annealing furnace inlet is the inner insulation surface, which includes an arc-shaped groove, an upper plane above the arc-shaped groove, and a lower plane below the arc-shaped groove.

5. The photovoltaic glass lehr entry insulation apparatus of claim 4, wherein: The side of the insulation block opposite to the inner insulation surface is the outer insulation arc surface, and the left and right ends of the insulation block are insulation end faces.

6. The photovoltaic glass lehr entry insulation apparatus of claim 5, wherein: The insulation block consists of an insulation mesh frame and an insulation layer laid outside the insulation mesh frame. The upper and lower sides of the insulation mesh frame are fixedly connected to the upper lifting rod and the lower lifting rod, respectively.

7. The photovoltaic glass lehr entry insulation apparatus of claim 6, wherein: The insulation layer has a multi-layer structure, including an inner lining layer and outer outer layers attached above and below the inner lining layer.

8. The photovoltaic glass lehr entry insulation apparatus of claim 7, wherein: The outer layer is made of fire-resistant quartz cloth, and the inner lining is made of rock wool.

9. The photovoltaic glass lehr entry insulation apparatus of claim 1, wherein: The frame includes a connecting plate that is fixedly connected to the annealing furnace. A horizontally extending outward support rib is fixed on the connecting plate. Two upwardly extending limiting ribs are fixed at intervals on the support ribs, and an upper lifting rod installation position is formed between the two limiting ribs.

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