Convection device of fireproof toughening furnace and glass toughening furnace
By setting heating wires above the quartz roller conveyor and utilizing the air supply and return channel design, on-demand heating of the convection device is achieved, solving the problems of low glass flatness and box deformation caused by heat mixing in the prior art, thus improving glass quality and equipment life.
Patent Information
- Application Number
- CN202423180332.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In existing convection devices, the heating elements are placed inside the convection chamber, causing heat mixing and preventing the glass from absorbing heat on demand. This reduces the flatness of the glass and causes severe deformation of the convection chamber, increasing energy waste and maintenance costs.
The heating element of the convection device is placed above the quartz roller conveyor. Through the design of the air supply and return channels, the high-temperature gas passes through the heating element before being blown onto the glass surface, forming a temperature gradient to achieve on-demand heating. The nozzle is placed below the convection box to separate it from the heating element and avoid heat mixing.
It improves the flatness of the glass, reduces the deformation of the convection box, lowers power consumption, simplifies the replacement and maintenance of the furnace wire, and extends the service life of the equipment.
Smart Images
Figure CN223659980U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to technical field, concretely relates to a convection device of fireproof toughening furnace and glass toughening furnace. BACKGROUND
[0002] The current convection device is that the furnace wire is arranged in the box body, a certain number of spray holes are arranged in the lower part of the box body and are parallel to the quartz roller, and are distributed at a certain interval distance, high-temperature gas is pressurized and sprayed into the box body by the high-temperature fan and then sprayed to the upper surface of the glass.
[0003] The current convection device is that the furnace wire is uniformly arranged in the same convection box body, the nozzle of the convection box body sprays the high-temperature gas in the box body to the upper surface of the glass, and the high-temperature gas is mixed in the same convection box body before being sprayed out, so that the gas temperature sprayed to different positions of the upper surface of the glass is basically the same even if the furnace wire releases different power. The furnace wire of the current convection device is arranged in the interior of the convection box body, the high-temperature gas in the convection box body is mixed, the high-temperature wind sprayed to the upper surface of the glass cannot produce a temperature difference, and the power distribution of the glass according to the required heat absorption cannot be realized, thereby reducing the flatness of the glass.
[0004] The furnace wire is arranged in the interior of the convection box body, which hinders the heating of the furnace wire to the glass, thereby wasting the electric energy, and the deformation of the convection box body is also very serious, which greatly reduces the service life of the convection box body; and the high-temperature wind in the convection box body flows out through the hole of the furnace wire lead-out line, thereby wasting the electric energy of the high-temperature fan; the furnace wire is arranged in the interior of the convection box body, and the furnace wire is difficult to replace after being damaged, thereby increasing the maintenance and use cost. UTILITY MODEL CONTENTS
[0005] To solve the above technical problems, the utility model provides a convection device of fireproof toughening furnace and glass toughening furnace, so as to solve the problem that the furnace wire is arranged in the convection box body in the prior art and the convection box body is deformed seriously, and also solve the technical problem that the high-temperature wind sprayed to the upper surface of the glass cannot produce a temperature difference and the flatness of the glass is reduced.
[0006] To achieve the above purpose, the technical solution of the utility model is as follows:
[0007] The utility model provides a convection device of fireproof steeling furnace, the convection device includes convection fan and convection box body, the convection box body includes air supply channel and return air channel, the convection fan is connected with convection box body through air supply channel, the convection fan is used to provide the power of gas air supply and return air, the convection box body is used to set up the top of heating furnace wire, the heating furnace wire is used to set up the top of quartz roller, the return air channel is used to flow the gas above quartz roller from convection box body to convection fan through heating furnace wire, the air supply channel is used to blow the gas from convection fan to the glass surface on quartz roller through heating furnace wire downwards.
[0008] Further, the air supply pipeline includes two air supply pipelines, the first ends of the two air supply pipelines are connected with the air outlets at the two ends of the convection fan respectively, and the second ends of the two air supply pipelines are connected with the convection box body, for conveying the gas centrifugally accelerated by the convection fan to the convection box body.
[0009] Further, the bottom of the convection box body is provided with a plurality of nozzles arranged along the width direction of the glass, and the nozzles are used to blow the gas in the convection box body to the glass surface.
[0010] Further, the nozzles are arranged at intervals with the heating furnace wires, and the height of the nozzles is higher than that of the heating furnace wires.
[0011] Further, the nozzle holes of the nozzles are in strip shape or multi-angle hole shape.
[0012] Further, the return air channel includes a plurality of return gas channels, the first ends of the return gas channels are arranged at the bottom of the convection box body, and the second ends of the return gas channels are arranged at the top of the convection box body and correspond to the air inlets of the convection fan.
[0013] Further, the return gas channels are arranged at intervals with the nozzles.
[0014] Further, more than one return gas channel is arranged between every two nozzles.
[0015] Further, the convection device is arranged along the width direction of the glass, and more than one convection device is arranged along the length direction of the glass.
[0016] The utility model has the advantages of:
[0017] The convection device is arranged at the upper portion of the heating wire, so that the phenomenon of serious deformation due to the heating wire arranged in the convection box and insufficient heat release is avoided.
[0018] The convection device comprises a convection fan and a convection box, the convection fan is connected with the convection box through a blowing channel, the convection fan is used for providing power for air blowing and air returning, the air returning channel is used for returning the gas above the quartz roller to the convection fan through the convection box and the heating wire, and the heating wire heats the gas in the process of passing through the convection box. The blowing channel is used for blowing the gas from the convection fan to the glass surface on the quartz roller through the heating wire in the convection box, and the heating wire heats the gas again in the process of passing through the heating wire from the convection box. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is the front view of the convection device of the utility model;
[0020] Figure 2 is the top view of the convection box of the utility model;
[0021] Figure 3 is the structure schematic view of the strip-shaped nozzle hole of the utility model;
[0022] Figure 4 is the structure schematic view of the multi-angle hole-shaped nozzle hole of the utility model;
[0023] Figure 5 is the side view of the convection device of the utility model;
[0024] Figure 6 is the structure schematic view of the convection device in the heating furnace of the utility model.
[0025] In the drawing: 1, convection fan; 2, convection box; 3, blowing pipeline; 4, return gas channel; 5, heating wire; 6, quartz roller; 7, nozzle; 8, strip-shaped nozzle hole; 9, multi-angle hole-shaped nozzle hole; 10, air suction port; 11, heating wire hanging rod; 12, hanging rod; 13, heat insulation cotton layer. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.
[0027] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.
[0028] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0029] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0030] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.
[0031] Referring to Figures 1 to 6According to the embodiment of the utility model, provide a convection device of fire -proof steeling furnace, the convection device includes convection fan 1 and convection box 2, the convection box 2 includes air supply passage and return air passage, the convection fan 1 is connected with convection box 2 through air supply passage, the convection fan 1 is used to provide the power of gas air supply and return air, the convection box 2 is used to set in the upper of heating furnace wire 5, the heating furnace wire 5 is used to set in the upper of quartz roller 6, the return air passage is used to flow the gas above quartz roller 6 from convection box 2 to convection fan 1 through heating furnace wire 5, the air supply passage is used to blow the gas from convection fan 1 to the glass surface on quartz roller 6 downwards through heating furnace wire 5 in convection box 2.
[0032] The utility model convection device includes convection fan 1 and convection box 2, the convection box 2 includes air supply passage and return air passage, the convection fan 1 is connected with convection box 2 through air supply passage, wherein air supply passage sets up at both ends of convection fan 1, return air passage sets up at the just below of convection fan 1, the convection fan 1 adopts high temperature centrifugal fan, and the rotation of impeller will the gas on the glass surface through return air passage inhale in convection fan 1, and through the centrifugal acceleration of convection fan 1 from both sides air supply passage will gas accelerate and spray out. The convection fan 1 is used to provide the power of gas air supply and return air, the return air passage is used to flow the gas above quartz roller 6 from convection box 2 to convection fan 1 through heating furnace wire 5, in the process that gas passes through heating furnace wire 5 from convection box 2, heating furnace wire 5 heats the gas, the air supply passage is used to blow the gas from convection fan 1 to the glass surface on quartz roller 6 downwards through heating furnace wire 5 in convection box 2, in the process that gas passes through heating furnace wire 5 from convection box 2, heating furnace wire 5 heats the gas again, and the heating work of glass is carried out repeatedly;The utility model convection device sets in the upper of heating furnace wire 5, and heating furnace wire 5 sets up along the glass width direction, sets up several heating furnace wires 5 in the glass width direction, and heating furnace wire 5 sets up between convection device and quartz roller 6, and the gas sprayed from convection device passes heating furnace wire 5 downwards, blows the heat of heating furnace wire 5 to the glass, can adjust the temperature of heating furnace wire 5 according to the different heating temperature of different regions on the glass surface, the temperature of heating furnace wire 5 will not be mixed, can form temperature gradient, realizes the power distribution of glass according to demand heat absorption, thereby improved the flatness of glass.
[0033] In the embodiment, the air supply duct 3 comprises two air supply ducts 3, the first ends of the two air supply ducts 3 are connected with the air outlets at the two ends of the convection fan 1 respectively, and the second ends of the two air supply ducts 3 are connected with the convection box 2 respectively, for conveying the gas centrifugally accelerated by the convection fan 1 to the convection box 2. The gas accelerated by the centrifugal fan enters the convection box 2 from the air supply ducts 3 connected at the two sides.
[0034] Referring to Figure 2 In the embodiment, the bottom of the convection box 2 is provided with a plurality of nozzles 7 arranged along the glass width direction, the nozzles 7 are used for blowing the gas in the convection box 2 to the glass surface. The nozzles 7 are arranged along the glass width direction, and the number of the nozzles 7 is set according to actual requirements.
[0035] In the embodiment, the nozzles 7 are arranged at intervals with the heating furnace wires 5, and the height of the nozzles 7 is higher than the height of the heating furnace wires 5. The heating furnace wires 5 are hung below the convection box 2 by the furnace wire hanging rods 11, the nozzles 7 are arranged between the two heating furnace wires 5 and are higher than the heating furnace wires 5, so that the gas sprayed from the convection box 2 can pass through the heating furnace wires 5 and spray the heat of the heating furnace wires 5 to the glass surface. It should be noted that in the embodiment, the heating furnace wires 5 are also arranged along the glass width direction, and the nozzles 7 are arranged parallel to the heating furnace wires 5.
[0036] Referring to Figure 3 and Figure 4 In the embodiment, the spray holes of the nozzles 7 are strip-shaped or multi-angle hole-shaped. By arranging a plurality of strip-shaped spray holes 8 or multi-angle hole-shaped spray holes 9 perpendicular to the quartz roller at the bottom of the box, during the heating process of the glass moving back and forth in the tempering furnace, the high-temperature wind blown by the nozzles 7 passes through the interval between the lower heating furnace wires and blows to the upper surface of the glass. Because the nozzles 7 are continuous and not distributed at a larger interval distance, the high-temperature wind obtained by the front and rear positions of the glass is very uniform, thereby greatly reducing the phenomenon of glass stress marks.
[0037] In the process of blowing and heating the upper surface of the glass by the nozzles 7, the high-temperature gas inside the convection box 2 is blown to the upper surface of the glass by the nozzles 7, and at the same time, flows through the gaps between two adjacent furnace wires, taking away the heat at the gaps between the furnace wires and blowing to the upper surface of the glass, and at the same time, reducing the excessive heating of the convection box by the heat at the gaps between the furnace wires, thereby avoiding the phenomenon of serious deformation of the convection box. Many groups of furnace wires are arranged in the width direction of the furnace body, and each group of furnace wires generates different power release according to the different positions of the glass, and the high-temperature gas blown by the nozzles 7 flows through the gaps between two adjacent furnace wires, and due to the flow through the furnace wires with different power release, the heat obtained by the glass is distributed according to the needs. Instead of arranging the furnace wires in the convection box 2 at a uniform temperature, this heating process according to the needs of the glass greatly improves the flatness of the glass. In the prior art, the furnace wires are arranged in the convection box 2, and the high-temperature air blown by the nozzles 7 to the upper surface of the glass produces different power release of the furnace wires in the width direction of the glass, but due to the mixing in the same convection box 2, the high-temperature air blown to the upper surface of the glass cannot produce temperature difference, and cannot realize the power distribution according to the heat absorption needs of the glass, thereby reducing the flatness of the glass.
[0038] In the present embodiment, the return air passage includes a plurality of return air passages 4, the first end of the return air passage 4 is arranged at the bottom of the convection box 2, and the second end of the return air passage 4 is arranged at the top of the convection box 2 and corresponds to the air suction port 10 of the convection fan 1. The return air passage 4 communicates between the lower part and the upper part of the convection box 2, and corresponds to the air suction port 10 of the convection fan 1, so that the convection fan 1 can suck the gas on the surface of the glass upward into the convection fan 1 to circulate the gas.
[0039] In the present embodiment, the return air passage 4 is arranged separately from the nozzle 7. The number of return air passages 4 is set according to actual needs.
[0040] In the present embodiment, more than one return air passage 4 is arranged between every two nozzles 7. In the present embodiment, three return air passages 4 are arranged corresponding to each nozzle 7, and 1-5 return air passages 4 can also be arranged according to actual needs.
[0041] Referring to Figure 5 In the present embodiment, the convection device is arranged in the width direction of the glass, and more than one convection device is arranged in the length direction of the glass. The width of the convection device is set according to the air suction range of the convection fan 1, so that according to the length of the tempering furnace, a plurality of convection devices can be arranged in the length direction of the glass to meet the needs of different areas in the tempering furnace.
[0042] In the embodiment of the present application, the convection device is arranged in the heating furnace, see Figure 6 The steeling furnace is provided with a heat insulation cotton layer inside the furnace, which plays a heat insulation role, and the convection device is connected with the top of the steeling furnace through a hanging rod 12.
[0043] The working principle of the present application is as follows:
[0044] During the heating process of the glass in the heating furnace, the high-temperature fan absorbs air through a plurality of backflow gas passages 4 arranged above the heating wires by high-speed rotation of the impeller (the air flows through the gap between the two heating wires, and the gas is heated for the first time), and then enters the convection box 2 through the rotation and pressurization of the impeller. When the convection nozzle 7 below the convection box 2 sprays, the gas flows through the gap between the two adjacent heating wires (the gas is heated for the second time) and blows to the upper surface of the glass. A plurality of nozzles 7 are arranged continuously in the front and rear directions of the glass, so that the heat of the heating wires received by the front and rear upper surfaces of the glass is very uniform during the swinging heating process, thereby causing the internal stress of the glass to be very uniform, which is reflected in the optical wind spot feature and thus is reduced and improved; the high-temperature gas blown to the upper surface of the glass is folded back after reaching the upper surface of the glass, and the above process is repeated to heat the glass.
[0045] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process conversion using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A convection device for a fireproofing steel furnace, characterized by, The convection device is used for being arranged above the heating furnace wire (5), the heating furnace wire (5) is used for being arranged above the quartz roller (6), the convection device includes a convection fan (1) and a convection box (2), the convection box (2) includes a supply air passage and a return air passage, the convection fan (1) is connected with the convection box (2) through the supply air passage, the convection fan (1) is used for providing the power of gas supply air and return air, the return air passage is used for flowing the gas above the quartz roller (6) from the convection box (2) to the convection fan (1) through the heating furnace wire (5), the supply air passage is used for blowing the gas from the convection fan (1) to the glass surface on the quartz roller (6) downward through the convection box (2) and the heating furnace wire (5).
2. The convection apparatus of a fireproofed steel furnace according to claim 1, characterized in that, The supply air passage includes a supply air pipe (3) and a nozzle (7), the supply air pipe (3) includes two supply air pipes (3), the first ends of the two supply air pipes (3) are connected with the air outlets at the two ends of the convection fan (1) respectively, and the second ends of the two supply air pipes (3) are connected with the convection box (2), so as to convey the gas centrifugally accelerated by the convection fan (1) to the convection box (2).
3. The convection apparatus of a fireproofed steel furnace according to claim 2, wherein, The bottom of the convection box (2) is provided with a plurality of nozzles (7) arranged along the glass width direction, and the nozzles (7) are used for blowing the gas in the convection box (2) to the glass surface.
4. The convection apparatus of claim 3, wherein, The nozzles (7) are arranged at intervals with the heating furnace wire (5), and the height of the nozzles (7) is higher than that of the heating furnace wire (5).
5. The convection apparatus of claim 3, wherein, The nozzle (7) is in the form of a strip or a multi-angle hole.
6. The convection apparatus for a fire safe steel furnace as defined in claim 2 wherein, The return air passage includes a plurality of return air passages (4), the first ends of the return air passages (4) are arranged at the bottom of the convection box (2), and the second ends of the return air passages (4) are arranged at the top of the convection box (2) and correspond to the air suction port (10) of the convection fan (1).
7. The convection apparatus of a fire safe steel furnace as claimed in claim 6, wherein, The return air passages (4) are arranged at intervals with the nozzles (7).
8. The convection apparatus of claim 7, wherein, More than one return air passage (4) is arranged between every two nozzles (7).
9. The convection apparatus for a fire safe steel furnace as defined in claim 1 wherein, The convection device is arranged along the glass width direction, and more than one convection device is arranged along the glass length direction.
10. A glass toughening furnace, characterized in that, The convection device of the fireproof toughening furnace.