Heating equipment and glass processing device

Abstract

The utility model discloses heating equipment which comprises a heating furnace, a heating chamber is arranged in the heating furnace, the heating furnace is provided with an end wall, a heat insulation structure is arranged on the end wall, and the heat insulation structure comprises an aerogel heat insulation layer. A conveying opening is formed in the end wall, penetrates through the end wall and the aerogel heat insulation layer and communicates with the heating chamber. The glass processing device comprises a cold quenching assembly and the heating equipment, and the cold quenching assembly is arranged on the outer side of the conveying opening of the heating equipment. According to the heating equipment disclosed by the utility model, after the glass is heated, when the glass is conveyed out of the heating furnace through the conveying port, the heat loss of the glass is less, and the glass can enter the cold quenching component in a high-temperature state, so that the glass quality is ensured, and the energy consumption of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tempering furnaces, in particular to a heating device and a glass processing device. Background Art

[0002] At present, in the existing heating furnace, the insulation layer at both ends of the furnace body is composed of multiple layers of ceramic fiber products, and its thermal conductivity is 0.14-0.15w / (m·k) -1 In order to ensure that the furnace temperature does not lose, it needs to be laid in multiple layers, and the laying thickness is not less than 200mm. Due to the thick insulation layer, the equipment has a large size. The inlet and outlet of the equipment belong to the cooling zone. When the glass is sent out of the heating furnace from the inlet and outlet of the equipment and enters the cold quenching section, the glass temperature has a certain loss, which will have a certain impact on the stability of the product and increase energy consumption.

[0003] Therefore, there is an urgent need for a heating device and a glass processing device to overcome the above-mentioned defects. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art described above, one of the purposes of the present invention is to provide a heating device which can reduce energy consumption and reduce heat loss during glass output.

[0005] The second purpose of the utility model is to provide a glass processing device, which can ensure that the glass enters the cold quenching component under high temperature, ensure the stability of the glass, and reduce energy consumption.

[0006] One of the technical solutions adopted by the utility model to solve the problem is:

[0007] A heating device comprises a heating furnace, wherein a heating chamber is arranged in the heating furnace, the heating furnace has an end wall, an insulation structure is arranged on the end wall, and the insulation structure comprises an aerogel insulation layer; a conveying port is arranged on the end wall, the conveying port passes through the end wall and the aerogel insulation layer and is connected to the heating chamber.

[0008] Furthermore, the laying thickness of the aerogel thermal insulation layer is 20-100 mm.

[0009] Furthermore, the thermal insulation structure comprises a high temperature resistant material layer, and the high temperature resistant material layer is arranged on a side of the aerogel thermal insulation layer close to the heating chamber.

[0010] Furthermore, the thermal insulation structure comprises a thermal insulation layer, which is arranged on a side of the aerogel thermal insulation layer away from the heating chamber, and the thermal conductivity of the thermal insulation layer is greater than the thermal conductivity of the aerogel thermal insulation layer.

[0011] Furthermore, a first conveying roller is provided in the heating chamber, and the first conveying roller extends to the outside of the heating furnace through the conveying port; the first conveying roller is used to convey the workpiece along a first direction.

[0012] Furthermore, a heating element is provided in the heating chamber, and the heating element includes a first heating element and a second heating element, the first heating element is arranged between the first conveying roller and the top wall of the heating chamber, the second heating element is arranged between the first conveying roller and the bottom wall of the heating chamber, and the first heating element and the second heating element both extend along the first direction.

[0013] Furthermore, it comprises a support member, which is protrudingly arranged on the top wall and the bottom wall of the heating chamber, and the heating element is installed on the support member.

[0014] The second technical solution adopted by the utility model to solve the problem is:

[0015] A glass processing device comprises a quenching component and the heating device as described above, wherein the quenching component is arranged outside the conveying port of the heating device.

[0016] Furthermore, the quenching assembly includes a second conveying roller, the second conveying roller extends toward the heating device to the conveying port, and the second conveying roller is used to receive the workpiece at the conveying port.

[0017] Furthermore, the quenching component includes an air supply component, and the air supply component includes an air nozzle, and the air nozzle is used to blow cold air toward the second conveying roller to cool the workpiece.

[0018] In summary, the heating device and glass processing device provided by the utility model have the following technical effects:

[0019] 1) The thermal conductivity of the aerogel insulation layer is small, and its thermal insulation performance is excellent, which can reduce the energy loss of heating equipment and save energy;

[0020] 2) The thickness of the thermal insulation structure is small, which can reduce the overall size of the equipment and reduce the length of the output end of the furnace. Since the output end of the furnace is a cooling section, it can reduce the heat loss during glass output and ensure that the glass enters the cold quenching component at a high temperature, thereby ensuring the stability of the glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal structure of the heating device along the conveying direction of an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a glass processing device according to an embodiment of the utility model.

[0023] The meanings of the reference numerals are as follows:

[0024] 1. Heating furnace; 11. Heating chamber; 12. End wall; 13. Heat insulation structure; 14. Conveying channel; 15. First heating element; 16. Second heating element; 17. Support element; 18. First conveying roller; 2. Quenching assembly; 21. Second conveying roller; 22. Air nozzle. DETAILED DESCRIPTION

[0025] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] Embodiment 1

[0029] See also Figure 1 This embodiment discloses a heating device, which includes a heating furnace 1. Specifically, a heating chamber is provided in the heating furnace 1, and the heating furnace 1 has an end wall 12; wherein a heat insulation structure 13 is provided on the end wall 12, and the heat insulation structure 13 includes an aerogel heat insulation layer. In addition, a conveying port is also provided on the end wall 12, and the conveying port passes through the end wall 12 and the aerogel heat insulation layer and communicates with the heating chamber 11.

[0030] It should be noted that the end walls 12 are arranged at both ends of the heating furnace 1 along the length direction, and the length direction of the heating furnace 1 is the conveying direction of the conveying roller. In addition, the end wall 12 arranged upstream in the conveying direction is the inlet end wall 12, and the conveying port on the inlet end wall 12 is the input port; the end wall 12 arranged downstream in the conveying direction is the outlet end wall 12, and the conveying port on the outlet end wall 12 is the output port, and the heat insulation structure 13 is at least arranged on the outlet end wall 12, and the output port passes through the end wall 12 and the heat insulation structure 13. The following description takes the heat insulation structure 13 arranged on the outlet end wall 12 as an example.

[0031] On this structural basis, during assembly, the heat insulation structure 13 can be fixed to the inner side of the end wall 12 by anchoring nails or heat-resistant glue. When using the heating device of the utility model, the workpiece is first sent into the heating chamber 11 through the input port on the heating furnace 1 for heating. When the workpiece is heated to a certain temperature, the workpiece is sent out from the output port to the next station for processing.

[0032] The workpiece may be glass. During the tempering process, the glass needs to be heated in a heating furnace 1 to about 700 degrees, which is close to the softening point, and then quickly and evenly cooled at high temperature; the tempered glass thus obtained forms uniform compressive stress on the surface and tensile stress inside, thereby improving the bending and impact resistance of the glass.

[0033] However, the conventional insulation structure 13 used in the existing heating furnace 1 is usually composed of a combination of multiple layers of aluminum silicate refractory fiber blankets and / or ceramic fiberboards, and in order to ensure the insulation effect, the laying thickness of the insulation structure 13 is not less than 200 mm; the insulation structure 13 formed in this way is thicker, and the length of the conveying channel 14 formed after the conveying port on the end wall 12 is penetrated through the insulation structure 13 is longer. It should be noted that since the conveying channel 14 gradually moves away from the heating chamber 11 along the conveying direction, the conveying channel 14 in the conveying port is a cooling section, and the glass will lose heat when it is transported through the conveying port. However, the conventional insulation structure 13 has a thicker laying thickness, resulting in a longer length of the conveying channel 14 on the end wall 12. Then, the glass stays in the conveying channel 14 for a longer time when it is output, and the heat lost on the surface of the glass is more, which will cause the glass to lose too much heat before entering the cold quenching component 2, affecting the stability of the glass.

[0034] Therefore, the utility model provides a thermal insulation structure 13 on the end wall 12, and the thermal insulation structure 13 includes an aerogel thermal insulation layer, specifically a silica aerogel thermal insulation layer, so as to thin the thermal insulation structure 13; specifically, since the thermal conductivity of the aerogel thermal insulation layer is lower than the thermal conductivity of conventional thermal insulation structures 13 such as aluminum silicate refractory fiber blankets or ceramic fiber boards, the thermal insulation structure 13 of the utility model has better thermal insulation performance at the same laying thickness.

[0035] Similarly, since the thermal conductivity of the aerogel insulation layer is relatively small, when achieving the same thermal insulation effect, the laying thickness of the insulation structure 13 with an aerogel insulation layer with a smaller thermal conductivity is thinner than the laying thickness of the conventional insulation structure 13 with a larger thermal conductivity, that is, the insulation structure 13 of the present application is relatively thin after laying, so the length of the conveying channel 14 formed after the conveying port passes through the insulation structure 13 is shorter, and the time that the glass stays in the conveying channel 14 is shortened, thereby reducing the heat loss of the glass and ensuring that the glass is rapidly cooled in the cold quenching component 2 in a high temperature state, thereby ensuring the quality of the glass.

[0036] In addition, under the premise that the volume of the heating chamber 11 remains unchanged, the utility model adopts an aerogel insulation layer as the insulation structure 13 arranged at the end of the heating furnace 1, which can reduce the length of the heating equipment and reduce the energy consumption of the heating furnace 1.

[0037] Furthermore, the laying thickness of the aerogel thermal insulation layer is 20-100 mm.

[0038] Since the aerogel insulation layer has a low thermal conductivity, when it is arranged on the end wall 12 of the heating furnace 1 for thermal insulation, the laying thickness does not exceed 100 mm, which can reduce the heat loss of the glass during transportation in the conveying port, and can meet the insulation requirements and ensure the insulation effect without wasting materials; at the same time, its laying thickness is at least 20 mm to ensure its insulation effect.

[0039] Furthermore, the heat insulation structure 13 also includes a high temperature resistant material layer, and the high temperature resistant material layer is arranged on a side of the aerogel heat insulation layer close to the heating chamber 11 .

[0040] On the basis of this structure, during assembly, anchor nails can be passed through the high temperature resistant material layer, the aerogel insulation layer and the end wall 12 in sequence to fix the insulation structure on the heating furnace 1 .

[0041] It should be noted that the aerogel insulation layer is a brittle material, which is prone to local material shedding and slagging in a high-temperature environment. The utility model arranges the high-temperature resistant material layer on the inner side of the aerogel insulation layer, which can ensure that when local material shedding and slagging occur in the aerogel insulation layer, the high-temperature resistant material layer will block it and prevent contamination of the glass in the heating chamber 11.

[0042] Among them, the high temperature resistant material layer can be asbestos material, ceramic material or graphite material, etc., which can withstand high temperatures and insulate; in addition, since the insulation effect of the heating furnace 1 is determined by the aerogel insulation layer, the high temperature resistant material layer can also be a fire-resistant and heat-conductive titanium alloy material.

[0043] In addition, the overall thickness of the insulation structure 13 formed by the high temperature resistant material layer and the aerogel insulation layer does not exceed 100 mm to prevent the extension length of the conveying channel 14 in the conveying port from being too long and reduce the heat loss during the transportation of the glass from the conveying port.

[0044] Furthermore, the thermal insulation structure 13 includes a thermal insulation layer. Specifically, the thermal insulation layer is arranged on a side of the aerogel thermal insulation layer away from the heating chamber 11, and the thermal conductivity of the thermal insulation layer is greater than the thermal conductivity of the aerogel thermal insulation layer.

[0045] The thermal insulation layer may be a ceramic fiber blanket, polyurethane foam, etc. The thermal insulation layer is disposed between the aerogel thermal insulation layer and the end wall 12 to supplement the thermal insulation effect of the aerogel thermal insulation layer and block the heat inside the end wall 12 to prevent the heating furnace 1 from getting hot outside. Since the heat is greatly reduced after being insulated by the aerogel thermal insulation layer, the thermal conductivity of the thermal insulation layer can be set to be greater than the thermal conductivity of the aerogel thermal insulation layer.

[0046] In addition, the thickness of the insulation structure 13 formed by the aerogel insulation layer and the thermal insulation layer, or the high-temperature resistant material layer, the aerogel insulation layer and the thermal insulation layer shall not exceed 100 mm, so as to prevent the conveying channel 14 formed after the conveying port passes through the thermal insulation structure 13 from being too long, thereby causing the glass to stay too long in the conveying channel 14 during the delivery process, resulting in a large amount of heat loss.

[0047] Furthermore, a first conveying roller 18 is provided in the heating chamber 11 , and the first conveying roller 18 extends to the outside of the heating furnace 1 through the conveying opening, and the first conveying roller 18 is used to convey the workpiece along a first direction.

[0048] It should be noted that the first direction is the length direction of the heating device, and the first direction is also the conveying direction of the heating furnace 1. The conveying port may include an input port located on the input end wall 12 and an output port located on the output end wall 12; the first conveying roller 18 extends from the input port of the heating furnace 1 to the output port along the first direction. Specifically, the first conveying roller 18 may be formed by laying a plurality of high-temperature resistant ceramic rollers along the first direction, and the ceramic rollers extend along the second direction, and the second direction is perpendicular to the first direction.

[0049] When in use, the first conveying roller 18 conveys the glass workpiece from the input port into the heating chamber 11 for heating. After the glass is heated to a certain temperature, the first conveying roller 18 conveys the glass from the output port to the next processing position.

[0050] In this way, the glass workpiece is conveyed by high-temperature resistant ceramic rollers, and an aerogel insulation layer is provided on the output end wall 12 of the heating furnace 1, so that the heat loss at the conveying port can be reduced and the energy consumption of the heating furnace 1 can be reduced; since the thickness of the insulation structure 13 is relatively small, the residence time of the glass transported by the ceramic roller through the conveying channel 14 in the conveying port is relatively short, which can reduce the heat loss of the glass.

[0051] Furthermore, a heating element is provided in the heating chamber 11, specifically, the heating element includes a first heating element 15 and a second heating element 16, wherein the first heating element 15 is arranged between the first conveying roller 18 and the top wall of the heating chamber 11, the second heating element 16 is arranged between the first conveying roller 18 and the bottom wall of the heating chamber 11, and the first heating element 15 and the second heating element 16 both extend along the first direction.

[0052] The first heating element 15 and the second heating element 16 can be heating wires, ceramic heating tubes, or heating rods. During the transmission process, the first heating element 15 and the second heating element 16 perform radiation heating on the glass on the first conveying roller 18, so that the temperature of the glass gradually rises to the softening temperature. Since the extension direction of the first heating element 15 and the second heating element 16 is the same as the conveying direction of the first conveying roller 18, the glass can receive radiation heating for a sufficient time during the conveying process, thereby ensuring that the glass can be heated to a specific temperature.

[0053] Furthermore, the heating device comprises a support member 17 , and the support member 17 is protrudingly arranged on the top wall and the bottom wall of the heating chamber 11 , and the heating element is mounted on the support member 17 .

[0054] Among them, the support member 17 can be a high-temperature resistant titanium alloy support frame or anchor nail. The heating element is fixedly installed on the support member 17 and separated from the top wall or bottom wall of the heating chamber 11, which is conducive to the heating element to radiate heating of the heating chamber 11 in all directions, ensuring that the temperature everywhere in the heating chamber 11 meets the requirements.

[0055] Embodiment 2

[0056] See also Figure 2 Different from the first embodiment, the present embodiment discloses a glass processing device, which includes a quenching component 2 and the heating device in the first embodiment, and the quenching component 2 is arranged outside the conveying port of the heating device.

[0057] Specifically, the quenching assembly 2 includes a second conveying roller 21, and the second conveying roller 21 extends toward the heating device to the conveying port to receive the workpiece at the conveying port.

[0058] It should be noted that the second conveyor roller 21 also transports the workpiece in the first direction, and the conveyor rollers in the first conveyor roller 18 and the second conveyor roller 21 have the same conveying speed and the same roller diameter, so that the two can be stably transitioned and connected to ensure stable transportation of the workpiece. Among them, since the second conveyor roller 21 is arranged outside the heating furnace 1, the requirements for its high temperature resistance are relatively low, so the second conveyor roller 21 can be a steel roller.

[0059] On the basis of this structure, when using the glass processing device of the present application, the glass workpiece is first conveyed into the heating chamber 11 by the first conveying roller 18, and is heated to soften and stabilize during the conveying process in the heating chamber 11, and then is conveyed to the conveying port by the first conveying roller 18. After receiving the glass workpiece at the conveying port, the second conveying roller 21 conveys it into the quenching assembly 2 for rapid air cooling.

[0060] At the same time, since a thinner insulation structure 13 is provided on the end wall 12 of the heating furnace 1 and the length of the conveying channel 14 in the conveying port is shorter, the first conveying roller 18 can deliver the glass faster and quickly deliver it to the quenching assembly 2 by the second conveying roller 21, thereby reducing the heat loss of the glass after leaving the heating chamber 11 and ensuring that the glass enters the quenching assembly 2 at a high temperature.

[0061] Furthermore, the quenching assembly 2 includes an air supply assembly, which includes an air nozzle 22, and the air nozzle 22 is used to blow cold air toward the second conveying roller 21 to cool the workpiece.

[0062] Based on this structure, the air nozzle 22 can be connected to the external air supply system so that the air nozzle 22 blows out cold air with lower temperature and higher wind pressure; the glass workpiece can be quickly cooled after being transported by the second conveying roller 21 to the wind field formed by the air nozzle 22.

[0063] In this way, since the glass stays in the cooling section for a short time when it is sent out of the heating furnace 1, the surface of the glass has a higher temperature when it enters the quenching assembly 2. Its surface is quickly cooled down by the high-pressure cold air blown out by the air nozzle 22, but the temperature inside the glass is still high, thereby forming compressive stress on the surface of the glass. When the glass is subjected to external force, the surface stress is first offset, thereby improving the bearing capacity.

[0064] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A heating device, characterized in that: It comprises a heating furnace, wherein a heating chamber is arranged in the heating furnace, the heating furnace has an end wall, an insulation structure is arranged on the end wall, and the insulation structure comprises an aerogel insulation layer; a conveying port is arranged on the end wall, the conveying port passes through the end wall and the aerogel insulation layer and is connected with the heating chamber; the laying thickness of the aerogel insulation layer is 20-100mm.

2. The heating device according to claim 1, characterized in that: The heat insulation structure comprises a high temperature resistant material layer, and the high temperature resistant material layer is arranged on a side of the aerogel heat insulation layer close to the heating chamber.

3. The heating device according to claim 1 or 2, characterized in that: The thermal insulation structure comprises a thermal insulation layer, which is arranged on a side of the aerogel thermal insulation layer away from the heating chamber, and the thermal conductivity of the thermal insulation layer is greater than the thermal conductivity of the aerogel thermal insulation layer.

4. The heating device according to claim 1, characterized in that: A first conveying roller is provided in the heating chamber, and the first conveying roller extends to the outside of the heating furnace through the conveying port; The first conveying roller is used for conveying the workpiece along a first direction.

5. The heating device according to claim 4, characterized in that: A heating element is provided in the heating chamber, and the heating element includes a first heating element and a second heating element. The first heating element is arranged between the first conveying roller and the top wall of the heating chamber, and the second heating element is arranged between the first conveying roller and the bottom wall of the heating chamber. The first heating element and the second heating element both extend along the first direction.

6. The heating device according to claim 5, characterized in that: It comprises a support member, which is protrudingly arranged on the top wall and the bottom wall of the heating chamber, and the heating element is installed on the support member.

7. A glass processing device, characterized in that: It comprises a quenching component and a heating device as described in any one of claims 1 to 6, wherein the quenching component is arranged on the outer side of the conveying port of the heating device.

8. The glass processing device according to claim 7, characterized in that: The quenching assembly includes a second conveying roller, which extends toward the heating device to the conveying port, and the second conveying roller is used to receive the workpiece at the conveying port.

9. The glass processing device according to claim 8, characterized in that: The quenching component includes an air supply component, and the air supply component includes an air nozzle, and the air nozzle is used to blow cold air toward the second conveying roller to cool the workpiece.

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