A heating furnace with air supply device and a glass tempering production line using the same

Abstract

The present invention relates to glass tempering equipment, and discloses a heating furnace with an air supply device and a glass tempering production line using the same, comprising a plurality of fans and a plurality of diverter air boxes; the fans are installed on the top surface of the heating furnace; the plurality of diverter air boxes correspond one to one with a plurality of groups of heating wires, and the diverter air boxes are located directly above a corresponding group of heating wires; the diverter air box comprises an air inlet pipe, an air hood, a diverter plate, and an air outlet plate; the upper end of the air inlet pipe is connected to the air outlet of the fan, and the lower end of the air inlet pipe is connected to the top surface of the air hood; the periphery of the air outlet plate is connected to the periphery of the bottom of the air hood; the diverter plate is located between the top surface of the air outlet plate and the lower end of the air inlet pipe; the diverter plate is provided with a plurality of first through holes; and the air outlet plate is provided with a plurality of second through holes. The air entering the air hood passes through the plurality of first through holes and the plurality of second through holes in sequence and is homogenized, and then blown downward above the heating wires and forms turbulence below the heating wires, thereby improving the uniformity of temperature distribution in the furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of glass tempering equipment, and in particular to a heating furnace with an air supply device and a glass tempering production line using the same. Background Art

[0002] The Chinese invention patent with the authorized patent number CN218058815U discloses a double-layer wind bag with uniform wind pressure distribution. Multiple groups of heating wires are installed in the wind bag cover, and a first wind plate and a second wind plate are installed at intervals below the heating wires.

[0003] In actual use, the bottom surface of the second air plate of this patent is close to the surface of the glass to be tempered 6. The hot air output from the multiple second through holes has good wind pressure uniformity after being equalized by the first air plate and the second air plate. However, due to the uneven heating of the multiple groups of heating wires, the temperature distribution around the multiple groups of heating wires is uneven, causing the hot air output from the multiple first through holes of the first air plate to have the defect of uneven temperature distribution, and the hot air output from the second air plate also has the defect of uneven temperature distribution, which ultimately causes the surface of the glass to be tempered 6 to be heated unevenly, affecting the quality of glass tempering. Summary of the Invention

[0004] In response to the above-mentioned shortcomings, the first purpose of the present invention is to propose a heating furnace with an air supply device, which first makes the wind speed and pressure of the wind input into the air hood uniform through the diversion plate and the air outlet plate, and then uses the uniformed wind to blow the heat around the heating wire to the bottom of the heating wire and form a turbulent flow, thereby improving the temperature distribution uniformity of the heating furnace.

[0005] A second object of the present invention is to provide a glass tempering production line using a heating furnace with an air supply device to improve the quality of glass tempering.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A heating furnace with an air supply device, wherein a plurality of groups of heating wires are installed in the heating furnace and spaced apart in the front-to-back direction, including a plurality of fans and a plurality of diversion air boxes;

[0008] The fan is installed on the top surface of the heating furnace; the plurality of diversion air boxes correspond one to one with the plurality of groups of heating wires, and the diversion air boxes are located directly above the corresponding group of heating wires;

[0009] The diversion air box includes an air inlet pipe, an air cover, a diversion plate and an air outlet plate;

[0010] The upper end of the air inlet pipe passes upward through the top of the heating furnace and is connected to the air outlet of the fan, and the lower end of the air inlet pipe is connected to the top surface of the wind cover; the periphery of the air outlet plate is connected to the periphery of the bottom of the wind cover; the diverter plate is installed in the wind cover, the diverter plate is located between the top surface of the air outlet plate and the lower end of the air inlet pipe, and the periphery of the diverter plate is connected to the inner wall of the wind cover;

[0011] The diverter plate is provided with a plurality of first through holes, which are distributed at intervals and pass through the plate surface of the diverter plate; the air outlet plate is provided with a plurality of second through holes, which are distributed at intervals and pass through the plate surface of the air outlet plate.

[0012] Furthermore, the heating wire includes a plurality of spiral portions, and the spiral portions extend in the front-to-back direction;

[0013] The plurality of first through holes and the plurality of second through holes are staggered up and down in a one-to-one correspondence;

[0014] The plurality of second through holes are divided into a plurality of groups. The plurality of second through holes in each group are arranged at intervals along the front-to-back direction. A group of the second through holes is located between two of the spiral portions spaced apart from each other on the left and right sides.

[0015] Furthermore, the diverter bellows further includes a plurality of first mounting tubes and a plurality of second mounting tubes;

[0016] The plurality of first mounting tubes are divided into two groups. The plurality of first mounting tubes in one group are arranged at intervals along the left-right direction at the rear or front of the diverter bellows. The upper ends of the first mounting tubes pass through the top surface of the wind shield, and the lower ends of the first mounting tubes pass downwardly through the diverter plate and the air outlet plate in sequence.

[0017] The first mounting tube is used to mount a suspension rod for suspending the heating wire;

[0018] A plurality of second mounting tubes are spaced apart in the middle of the diversion air box along the left-right direction, the upper ends of the second mounting tubes pass through the top surface of the air cover, and the lower ends of the second mounting tubes pass downward through the diversion plate and the air outlet plate in sequence;

[0019] The second mounting tube is used for inserting a thermocouple.

[0020] Furthermore, the plurality of diverter bellows are divided into two groups aligned one by one on the left and right, and the plurality of diverter bellows in one group are spaced apart along the front-to-back direction, and the two opposite outer sides of the two aligned diverter bellows on the left and right abut against each other;

[0021] The fan is a centrifugal fan.

[0022] Preferably, the distance between the air outlet plate and the top surface of the heating wire aligned below is distance a, the distance between the bottom surface of the heating wire and the top surface of the transmission roller below is distance b, and the distance a is smaller than the distance b.

[0023] Furthermore, the outer circumference of the heating wire is wrapped with a metal sleeve, the metal sleeve is located in the porcelain tube, and the porcelain tube is inserted into the upper insulation layer or the lower insulation layer;

[0024] A gap is left between the outer circumference of the metal sleeve and the inner wall of the porcelain tube; both ends of the porcelain tube respectively penetrate the upper insulation layer upward or penetrate the lower insulation layer downward; and both ends of the heating wire are equipped with porcelain heads.

[0025] Preferably, the metal sleeve is made of austenitic chromium-nickel stainless steel.

[0026] Furthermore, the heating furnace is divided into an upper furnace body and a lower furnace body, and a plurality of drive rollers extending in the left-right direction are mounted on the upper part of the lower furnace body at intervals. The insulation layer of the heating furnace includes a plurality of transverse insulation blocks, a plurality of longitudinal insulation blocks, and a plurality of detachable insulation blocks. The longitudinal insulation blocks are composed of a plurality of insulation sheets abutting against each other on the left and right sides.

[0027] The plurality of transverse heat-insulating blocks are divided into two groups, and the plurality of transverse heat-insulating blocks in one group are connected front to back and cover the top surface of the inner wall of the upper furnace body or the bottom surface of the inner wall of the lower furnace body;

[0028] The plurality of longitudinal heat-insulating blocks are divided into four groups; the plurality of longitudinal heat-insulating blocks in one group are connected front to back and cover the left side of the inner wall of the upper furnace body or the right side of the inner wall of the upper furnace body, and the left side of the inner wall of the lower furnace body or the right side of the inner wall of the lower furnace body;

[0029] The multiple detachable insulation blocks are divided into four groups; the multiple detachable insulation blocks in one group are connected to each other front and back, and are embedded between the innermost longitudinal insulation block and the roller surface of the transmission roller; the top surface or bottom surface of the detachable insulation block is against the bottom surface or top surface of the innermost insulation sheet;

[0030] A first semicircular hole is formed on the top or bottom surface of the detachable heat-insulating block near the driving roller, and the first semicircular hole penetrates the detachable heat-insulating block from left to right; a second semicircular hole is formed on the top or bottom surface of the longitudinal heat-insulating block near the driving roller, and the second semicircular hole penetrates the longitudinal heat-insulating block from left to right; the first semicircular hole and the second semicircular hole are aligned left and right and are connected;

[0031] The first semicircular hole and the second semicircular hole are connected to each other and are used to accommodate the transmission roller.

[0032] Furthermore, the insulation layer of the heating furnace further includes a plurality of lining insulation sheets, a first fixing sheet, a first rivet, a second fixing sheet, and a second rivet;

[0033] The plurality of lining insulation sheets are divided into five groups; the plurality of lining insulation sheets in one group are connected front to back and cover the inner side surface of the innermost insulation sheet or the top surface of the transverse insulation block located on the lower furnace body;

[0034] The top surface or bottom surface of the lining insulation sheet covering the inner side surface of the innermost insulation sheet abuts against the bottom surface or top surface of the detachable insulation block;

[0035] The first fixing plate is located above the transmission roller, one end of the first rivet is fixed to the first fixing plate, and the other end of the first rivet passes through the detachable heat-insulating block and the side wall of the upper furnace body in sequence and is fixed to the outer side surface of the upper furnace body; the first fixing plate passes over the gap between the heat-insulating sheet and the detachable heat-insulating block, and the first fixing plate abuts against the inner side surface of the heat-insulating sheet and the inner side surface of the detachable heat-insulating block;

[0036] The second fixing plate is located between the two transmission rollers facing each other and below the transmission rollers;

[0037] One end of the second rivet is fixed to the second fixing plate, and the other end of the second rivet passes through the detachable heat-insulating block and the side wall of the lower furnace body in sequence and is fixed to the outer side surface of the lower furnace body; the second fixing plate abuts against the inner side surface of the detachable heat-insulating block;

[0038] The transverse insulation block, the detachable insulation block and the lining insulation sheet are all aluminum silicate ceramic fiber boards.

[0039] Furthermore, the present invention provides a glass tempering production line using the heating furnace with the air supply device described above.

[0040] In the heating furnace with an air supply device of the present invention, the wind output by the fan enters the wind hood through the air inlet pipe, and the wind entering the wind hood passes through multiple first through holes and multiple second through holes in sequence and is homogenized. The homogenized wind is then blown downward above a group of heating wires, so that the heat around each group of heating wires is carried by the wind into the bottom of the group of heating wires, and a turbulent flow is formed below the group of heating wires. The heat of the hot air flow of the turbulent flow is homogenized below the group of heating wires, thereby improving the uniformity of temperature distribution in the heating furnace, and then improving the heating uniformity of the tempered glass, thereby improving the quality of glass tempering.

[0041] Furthermore, the glass tempering production line proposed by the present invention uses a heating furnace with an air supply device. Not only does the heating furnace have good temperature distribution uniformity, but the insulation layer also contains detachable insulation blocks and insulation sheets, the quality of glass tempering is good, and the maintenance cost of the insulation layer is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a structural schematic diagram of the heating furnace with an air supply device of the present invention;

[0043] Figure 2 for Figure 1 Schematic diagram of the structure of the diverter bellows;

[0044] Figure 3 for Figure 2 Cross-sectional view of the BB part;

[0045] Figure 4 for Figure 1 Rear view;

[0046] Figure 5 for Figure 1 A partial enlarged view of part A in FIG;

[0047] Figure 6 Schematic diagram of the installation structure of the heating wire in the heating furnace of the present invention;

[0048] Figure 7 For Figure 6 The schematic diagram of the heating wire structure below;

[0049] Figure 8 It is a schematic structural diagram of the insulation layer of the heating furnace 1 of the present invention;

[0050] Figure 9 for Figure 8 Schematic diagram of the three-dimensional structure;

[0051] Figure 10 for Figure 8 A partial enlarged view of part C in FIG;

[0052] Among them: heating furnace 1; fan 2; diverter bellows 3; heating wire 4; upper insulation layer 5; tempered glass 6; transmission roller 7; thermocouple 9; lower insulation layer 10; porcelain head 11; metal sleeve 12; porcelain tube 13; horizontal insulation block 21; longitudinal insulation block 22; lining insulation sheet 23; detachable insulation block 24; first rivet 25; first fixing plate 26; second fixing plate 27; second rivet 28; air inlet pipe 31; wind cover 32; diverter plate 33; air outlet plate 34; first mounting tube 35; second mounting tube 36; spiral portion 41; upper furnace body 101; lower furnace body 102; insulation sheet 221; first semicircular hole 241; first through hole 331; second through hole 341; second semicircular hole 2210. DETAILED DESCRIPTION

[0053] The following is combined with Figure 1-10 The technical solution of the present invention is further illustrated through specific implementation methods.

[0054] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0055] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium, or the internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0056] A heating furnace with an air supply device, wherein a plurality of groups of heating wires 4 arranged at intervals in the front-to-back direction are installed in the heating furnace 1, and the heating furnace includes a plurality of fans 2 and a plurality of diversion air boxes 3;

[0057] The fan 2 is installed on the top surface of the heating furnace 1; the plurality of diverter air boxes 3 correspond one to one with the plurality of heating wires 4, and the diverter air boxes 3 are located directly above the corresponding group of heating wires 4;

[0058] The diverter air box 3 includes an air inlet pipe 31, an air cover 32, a diverter plate 33 and an air outlet plate 34;

[0059] The upper end of the air inlet pipe 31 passes upward through the top of the heating furnace 1 and is connected to the air outlet of the fan 2. The lower end of the air inlet pipe 31 is connected to the top surface of the wind cover 32. The periphery of the air outlet plate 34 is connected to the periphery of the bottom of the wind cover 32. The diverter plate 33 is installed in the wind cover 32. The diverter plate 33 is located between the top surface of the air outlet plate 34 and the lower end of the air inlet pipe 31. The periphery of the diverter plate 33 is connected to the inner wall of the wind cover 32.

[0060] The diverter plate 33 is provided with a plurality of first through holes 331 , which are spaced apart and pass through the plate surface of the diverter plate 33 ; the air outlet plate 34 is provided with a plurality of second through holes 341 , which are spaced apart and pass through the plate surface of the air outlet plate 34 .

[0061] Figure 1-3It is a structural schematic diagram of the heating furnace with air supply device of the present invention. Figure 1 In the heating furnace 1, a plurality of transmission rollers 7 are provided for conveying the tempered glass 6 and are arranged at intervals along the front-to-back direction. The diversion bellows 3 is located directly above the corresponding group of heating wires 4, and the top surface of the wind cover 32 is close to the bottom surface of the upper insulation layer 5.

[0062] In the heating furnace with an air supply device of the present invention, the wind output by the fan 2 enters the wind cover 32 through the air inlet pipe 31, and the wind entering the wind cover 32 passes through multiple first through holes 331 and multiple second through holes 341 in sequence and is homogenized. The homogenized wind is then blown downward above a group of heating wires 4, so that the heat around each group of heating wires 4 is carried by the wind into the bottom of the group of heating wires 4, and a turbulent flow is formed below the group of heating wires 4. The heat of the hot air flow of the turbulent flow is homogenized below the group of heating wires 4, thereby improving the uniformity of temperature distribution in the heating furnace 1, and then improving the heating uniformity of the tempered glass 6, thereby improving the quality of glass tempering.

[0063] Furthermore, the heating wire 4 includes a plurality of spiral portions 41, and the spiral portions 41 extend in the front-to-back direction;

[0064] The first through holes 331 and the second through holes 341 are staggered vertically in a one-to-one correspondence;

[0065] The plurality of second through holes 341 are divided into a plurality of groups. The plurality of second through holes 341 in each group are arranged at intervals along the front-to-back direction. A group of second through holes 341 is located between two of the spiral portions 41 spaced apart from each other on the left and right.

[0066] like Figure 3 and Figure 5 As shown, a group of multiple second through holes 341 are arranged between two spiral portions 41 spaced apart on the left and right sides, which can prevent the wind output from the second through holes 341 from blowing directly on the surface of the heating wire 4, thereby avoiding the phenomenon of uneven temperature of the heating wire 4 and shortening the service life of the heating wire 4.

[0067] like Figure 3 As shown, the multiple first through holes 331 and the multiple second through holes 341 are offset up and down in a one-to-one correspondence, which can avoid the phenomenon that the wind output by the fan 2 passes through the aligned first through holes 331 and second through holes 341 from top to bottom in sequence and blows directly onto the surface of the tempered glass 6 below, thereby improving the wind pressure uniformity of the guide wind output by the multiple second through holes 341 and avoiding wind spots on the surface of the tempered glass 6.

[0068] Furthermore, the diverter bellows 3 further includes a plurality of first mounting tubes 35 and a plurality of second mounting tubes 36;

[0069] The plurality of first mounting tubes 35 are divided into two groups. The plurality of first mounting tubes 35 in one group are arranged at intervals along the left-right direction at the rear or front of the diverter bellows 3. The upper ends of the first mounting tubes 35 pass through the top surface of the wind shield 32, and the lower ends of the first mounting tubes 35 pass downward through the diverter plate 33 and the air outlet plate 34 in sequence.

[0070] The first mounting tube 35 is used to install a suspension rod for suspending the heating wire 4;

[0071] A plurality of second mounting tubes 36 are arranged in a left-right spaced relationship in the middle of the diverter bellows 3. The upper ends of the second mounting tubes 36 pass through the top surface of the wind shield 32, and the lower ends of the second mounting tubes 36 pass downward through the diverter plate 33 and the air outlet plate 34 in sequence.

[0072] The second mounting tube 36 is used for inserting the thermocouple 9 .

[0073] like Figure 1-3 As shown, the hanger for suspending the heating wires 4 passes through the first mounting tube 35 and is suspended on the top of the heating furnace 1. The lower end of the thermocouple 9 passes through the second mounting tube 36 from the top of the heating furnace 1 and extends below the heating wires 4 to detect the temperature of the area below the corresponding group of heating wires 4.

[0074] Furthermore, the plurality of diverter bellows 3 are divided into two groups, one aligned on the left and one aligned on the right. The plurality of diverter bellows 3 in one group are spaced apart along the front-to-back direction, and the two opposite outer sides of the two aligned diverter bellows 3 on the left and right abut against each other.

[0075] The fan 2 is a centrifugal fan.

[0076] like Figure 4 As shown, the two diversion bellows 3 facing each other on the left and right are offset from each other, which can avoid the generation of turbulent airflow due to the gap between the two diversion bellows 3 facing each other on the left and right, thereby avoiding the phenomenon of uneven temperature distribution in the area between the two groups of heating wires 4 facing each other on the left and right.

[0077] The centrifugal fan has the advantages of low air flow velocity and small wind pressure variation, which can reduce the influence of wind pressure and flow velocity on the temperature distribution uniformity in the heating furnace 1.

[0078] Preferably, the distance between the air outlet plate 34 and the top surface of the heating wire 4 aligned below is a distance a, and the distance between the bottom surface of the heating wire 4 and the top surface of the transmission roller 7 below is a distance b, and the distance a is smaller than the distance b.

[0079] like Figure 5 As shown, the spacing b is greater than the spacing a, so that the hot air entering under the heating wire 4 has enough space to form turbulence and be homogenized, thereby improving the uniformity of temperature distribution in the heating furnace 1.

[0080] Furthermore, the outer circumference of the heating wire 4 is wrapped with a metal sleeve 12, and the metal sleeve 12 is located in a porcelain tube 13, and the porcelain tube 13 is inserted into the upper insulation layer 5 or the lower insulation layer 10;

[0081] A gap is left between the outer circumference of the metal sleeve 12 and the inner wall of the porcelain tube 13; both ends of the porcelain tube 13 respectively penetrate the upper insulation layer 5 upward or penetrate the lower insulation layer 10 downward; the ends of both ends of the heating wire 4 are both equipped with porcelain heads 11.

[0082] Figure 6 This is a schematic diagram of the installation structure of the heating wire in the heating furnace 1 of the present invention. Figure 7 This is a schematic diagram of the structure of the heating wire 4 located below the heating furnace 1. The middle part of the heating wire 4 in the figure is spiral-shaped, and the outer periphery of the heating wire 4 near both ends is sheathed with a porcelain tube 13 and is located in the upper insulation layer 5 or the lower insulation layer 10. The two ends of the porcelain tube 13 pass through the upper insulation layer 5 upward or pass through the lower insulation layer 10 downward, and the ends of both ends of the heating wire 4 are sheathed with porcelain heads 11.

[0083] The metal sleeve 12 wrapped around the outer surface of the heating wire 4 has a heat dissipation function. Even if the heating wire 4 in the metal sleeve 12 breaks, the metal sleeve 12 can still be conductive, thereby avoiding the short circuit phenomenon of the heating wire 4, and then avoiding the phenomenon that the heating wire 4 cannot output heat, thereby ensuring the normal operation of the heating furnace 1 and reducing the impact on the temperature distribution uniformity of the heating furnace 1.

[0084] The gap between the outer peripheral surface of the metal sleeve 12 and the inner wall of the porcelain tube 13 will form a hot air flow leaking from the furnace to the outside of the furnace, which is beneficial to prevent heat accumulation in the metal sleeve 12 and thus prevent the temperature of the metal sleeve 12 from being too high.

[0085] The ends of both ends of the heating wire 4 are both covered with porcelain heads 11, which can prevent the two ends of the energized heating wire 4 from contacting other objects and causing leakage or short circuit.

[0086] Preferably, the metal sleeve 12 is made of austenitic chromium-nickel stainless steel.

[0087] Austenitic chromium-nickel stainless steel has good high temperature resistance and also has good oxidation resistance and corrosion resistance.

[0088] Furthermore, the heating furnace 1 is divided into an upper furnace body 101 and a lower furnace body 102. A plurality of drive rollers 7 extending in the left-right direction are mounted above the lower furnace body 102 at intervals. The insulation layer of the heating furnace 1 includes a plurality of transverse insulation blocks 21, a plurality of longitudinal insulation blocks 22, and a plurality of detachable insulation blocks 24. The longitudinal insulation blocks 22 are composed of a plurality of insulation sheets 221 that are mutually opposed.

[0089] The plurality of transverse heat-insulating blocks 21 are divided into two groups. The plurality of transverse heat-insulating blocks 21 in one group are connected front to back and cover the top surface of the inner wall of the upper furnace body 101 or the bottom surface of the inner wall of the lower furnace body 102.

[0090] The plurality of longitudinal heat-insulating blocks 22 are divided into four groups; the plurality of longitudinal heat-insulating blocks 22 in one group are connected front to back and cover the left side of the inner wall of the upper furnace body 101 or the right side of the inner wall of the upper furnace body 101, and the left side of the inner wall of the lower furnace body 102 or the right side of the inner wall of the lower furnace body 102;

[0091] The multiple detachable insulation blocks 24 are divided into four groups; the multiple detachable insulation blocks 24 in one group are connected to each other front and back, and are embedded between the innermost longitudinal insulation block 22 and the roller surface of the transmission roller 7; the top surface or bottom surface of the detachable insulation block 24 is against the bottom surface or top surface of the innermost insulation sheet 221;

[0092] A first semicircular hole 241 is formed on the top or bottom surface of the detachable heat-insulating block 24 near the driving roller 7, and the first semicircular hole 241 penetrates the detachable heat-insulating block 24 from left to right; a second semicircular hole 2210 is formed on the top or bottom surface of the longitudinal heat-insulating block 22 near the driving roller 7, and the second semicircular hole 2210 penetrates the longitudinal heat-insulating block 22 from left to right; the first semicircular hole 241 and the second semicircular hole 2210 are aligned with each other and are connected;

[0093] The first semicircular hole 241 and the second semicircular hole 2210 are connected to each other for accommodating the driving roller 7 .

[0094] Figure 8-10 It is a schematic structural diagram of the insulation layer of the heating furnace 1.

[0095] Removable insulation blocks 24 are embedded above the upper roller surface and below the lower roller surface of the transmission roller 7, and the removable insulation block 24 is located on the inner side of the longitudinal insulation block 22 composed of multiple insulation sheets 221 abutting each other on the left and right. The tempered glass 6 runs on the upper roller surface of the transmission roller 7. When the tempered glass 6 is displaced, the edges and corners of the tempered glass 6 will scratch the inner side of the removable insulation block 24, while the longitudinal insulation block 22 will not be damaged. Therefore, only the damaged removable insulation block 24 needs to be replaced. The removable insulation block 24, which is a wearing part, is small in size, easy to disassemble and assemble, and has lower maintenance costs.

[0096] Furthermore, the insulation layer of the heating furnace 1 further includes a plurality of lining insulation sheets 23, a first fixing sheet 26, a first rivet 25, a second fixing sheet 27 and a second rivet 28;

[0097] The plurality of lining insulation sheets 23 are divided into five groups; the plurality of lining insulation sheets 23 in one group are connected front to back and cover the inner side surface of the innermost insulation sheet 221 or the top surface of the transverse insulation block 21 located on the lower furnace body 102;

[0098] The top surface or bottom surface of the lining insulation sheet 23 covering the inner side surface of the innermost insulation sheet 221 abuts against the bottom surface or top surface of the detachable insulation block 24;

[0099] The first fixing plate 26 is located above the driving roller 7. One end of the first rivet 25 is fixed to the first fixing plate 26. The other end of the first rivet 25 passes through the detachable heat-insulating block 24 and the side wall of the upper furnace body 101 in sequence and is fixed to the outer side surface of the upper furnace body 101. The first fixing plate 26 passes over the gap between the heat-insulating sheet 221 and the detachable heat-insulating block 24. The first fixing plate 26 abuts against the inner side surface of the heat-insulating sheet 221 and the inner side surface of the detachable heat-insulating block 24.

[0100] The second fixing plate 27 is located between the two front and rear opposite transmission rollers 7 and below the transmission rollers 7;

[0101] One end of the second rivet 28 is fixed to the second fixing plate 27, and the other end of the second rivet 28 passes through the detachable heat-insulating block 24 and the side wall of the lower furnace body 102 in sequence and is fixed to the outer side surface of the lower furnace body 102; the second fixing plate 27 abuts against the inner side surface of the detachable heat-insulating block 24;

[0102] The transverse insulation block 21 , the detachable insulation block 24 and the lining insulation sheet 23 are all aluminum silicate ceramic fiber boards.

[0103] The lining insulation sheet 23 , the insulation sheet material 221 and the transverse insulation block 21 are made of the same material, and the thickness of the lining insulation sheet 23 is smaller than the thickness of the insulation sheet material 221 or the transverse insulation block 21 .

[0104] like Figure 8 and Figure 9 As shown, when performing furnace maintenance and slag cleaning, the insulation materials located on the inner side and bottom of the heating furnace 1 may be damaged. For example, a thinner lining insulation sheet 23 is used to cover the inner side of the innermost insulation sheet 221 and the top surface of the horizontal insulation block 21 in the lower furnace body 102. Only the damaged lining insulation sheet 23 needs to be replaced. The lining insulation sheet 23, which is a wearing part, is easy to disassemble and assemble, and the lining insulation sheet 23 has a lower material cost than the insulation sheet 221 or the horizontal insulation block 21.

[0105] like Figure 8 and Figure 10 As shown, the insulation sheet 221 and the detachable insulation block 24 located above the driving roller 7 are fixed by a first fixing piece 26 and a first rivet 25 to prevent the insulation sheet 221 and the detachable insulation block 24 from becoming loose when the tempered glass 6 is hung thereon, thereby avoiding affecting the normal operation of the heating furnace 1. The detachable insulation block 24 located below the driving roller 7 is fixed by a second fixing piece 27 and a second rivet 28 to prevent the detachable insulation block 24 from becoming loose during the normal operation of the heating furnace 1 or when cleaning slag.

[0106] The aluminum silicate ceramic fiberboard not only has good temperature resistance, but also has the advantages of being flame retardant, light in bulk density, sound-insulating and shock-resistant, which can improve the energy utilization rate of the heating furnace 1 and reduce noise during operation.

[0107] Furthermore, the present invention provides a glass tempering production line using the heating furnace with the air supply device described above.

[0108] The glass tempering production line using a heating furnace with an air supply device of the present invention not only has a good temperature distribution uniformity in the heating furnace 1 used, but also has an insulation layer containing detachable insulation blocks 24 and insulation sheets 221, so that the quality of glass tempering is good and the maintenance cost of the insulation layer is low.

[0109] In summary, if Figure 1-5 In the embodiment of the present invention shown, the heating furnace with an air supply device, the wind output by the fan 2 enters the wind cover 32 through the air inlet pipe 31, and the wind entering the wind cover 32 passes through multiple first through holes 331 and multiple second through holes 341 in sequence and is homogenized. The homogenized wind is then blown downward above a group of heating wires 4, so that the heat around each group of heating wires 4 is carried by the wind into the bottom of the group of heating wires 4, and a turbulent flow is formed below the group of heating wires 4. The heat of the hot air flow of the turbulent flow is homogenized below the group of heating wires 4, thereby improving the uniformity of temperature distribution in the heating furnace 1, and then improving the heating uniformity of the tempered glass 6, thereby improving the quality of glass tempering.

[0110] Furthermore, the glass tempering production line proposed by the present invention using a heating furnace with an air supply device not only has good temperature distribution uniformity in the heating furnace 1 used, but also the insulation layer contains detachable insulation blocks 24 and insulation sheets 221, the quality of glass tempering is good, and the maintenance cost of the insulation layer is low.

[0111] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A heating furnace with an air supply device, wherein a plurality of heating wires are installed in the heating furnace and arranged at intervals along the front-to-back direction, characterized in that: including multiple fans and multiple diversion air boxes; The fan is installed on the top surface of the heating furnace; the plurality of diversion air boxes correspond one to one with the plurality of groups of heating wires, and the diversion air boxes are located directly above the corresponding group of heating wires; The diversion air box includes an air inlet pipe, an air cover, a diversion plate and an air outlet plate; The upper end of the air inlet pipe passes upward through the top of the heating furnace and is connected to the air outlet of the fan, and the lower end of the air inlet pipe is connected to the top surface of the wind cover; the periphery of the air outlet plate is connected to the periphery of the bottom of the wind cover; the diverter plate is installed in the wind cover, the diverter plate is located between the top surface of the air outlet plate and the lower end of the air inlet pipe, and the periphery of the diverter plate is connected to the inner wall of the wind cover; The manifold plate is provided with a plurality of first through holes, which are spaced apart and pass through the plate surface of the manifold plate; the air outlet plate is provided with a plurality of second through holes, which are spaced apart and pass through the plate surface of the air outlet plate; The outer circumference of the heating wire is wrapped with a metal sleeve, the metal sleeve is located in the porcelain tube, and the porcelain tube is inserted into the upper insulation layer or the lower insulation layer; A gap is left between the outer circumference of the metal sleeve and the inner wall of the porcelain tube; both ends of the porcelain tube respectively penetrate the upper insulation layer upward or penetrate the lower insulation layer downward; and both ends of the heating wire are equipped with porcelain heads.

2. The heating furnace with air supply device according to claim 1, characterized in that: The heating wire includes a plurality of spiral portions, and the spiral portions extend in a front-to-back direction; The plurality of first through holes and the plurality of second through holes are staggered up and down in a one-to-one correspondence; The plurality of second through holes are divided into a plurality of groups. The plurality of second through holes in each group are arranged at intervals along the front-to-back direction. A group of the second through holes is located between two of the spiral portions spaced apart from each other on the left and right sides.

3. The heating furnace with air supply device according to claim 1, characterized in that: The diverter bellows further comprises a plurality of first mounting tubes and a plurality of second mounting tubes; The plurality of first mounting tubes are divided into two groups. The plurality of first mounting tubes in one group are arranged at intervals along the left-right direction at the rear or front of the diverter bellows. The upper ends of the first mounting tubes pass through the top surface of the wind shield, and the lower ends of the first mounting tubes pass downwardly through the diverter plate and the air outlet plate in sequence. The first mounting tube is used to mount a suspension rod for suspending the heating wire; A plurality of second mounting tubes are spaced apart in the middle of the diversion air box along the left-right direction, the upper ends of the second mounting tubes pass through the top surface of the air cover, and the lower ends of the second mounting tubes pass downward through the diversion plate and the air outlet plate in sequence; The second mounting tube is used for inserting a thermocouple.

4. The heating furnace with air supply device according to claim 1, characterized in that: The plurality of diverter bellows are divided into two groups aligned one by one on the left and right, wherein the plurality of diverter bellows in one group are arranged at intervals along the front-to-back direction, and the two opposite outer sides of the two aligned diverter bellows on the left and right abut against each other; The fan is a centrifugal fan.

5. The heating furnace with air supply device according to claim 1, characterized in that: The distance between the air outlet plate and the top surface of the heating wire aligned below is distance a, and the distance between the bottom surface of the heating wire and the top surface of the transmission roller below is distance b, and the distance a is smaller than the distance b.

6. The heating furnace with an air supply device according to any one of claims 1 to 5, characterized in that: The metal sleeve is made of austenitic chromium-nickel stainless steel.

7. The heating furnace with air supply device according to claim 6, wherein the heating furnace is divided into an upper furnace body and a lower furnace body, and a plurality of transmission rollers extending in the left-right direction are mounted on the upper part of the lower furnace body at intervals in front and back. The insulation layer of the heating furnace includes a plurality of transverse insulation blocks, a plurality of longitudinal insulation blocks and a plurality of detachable insulation blocks, wherein the longitudinal insulation blocks are composed of a plurality of insulation sheets abutting against each other; The plurality of transverse heat-insulating blocks are divided into two groups, and the plurality of transverse heat-insulating blocks in one group are connected front to back and cover the top surface of the inner wall of the upper furnace body or the bottom surface of the inner wall of the lower furnace body; The plurality of longitudinal heat-insulating blocks are divided into four groups; the plurality of longitudinal heat-insulating blocks in one group are connected front to back and cover the left side of the inner wall of the upper furnace body or the right side of the inner wall of the upper furnace body, and the left side of the inner wall of the lower furnace body or the right side of the inner wall of the lower furnace body; The multiple detachable insulation blocks are divided into four groups; the multiple detachable insulation blocks in one group are connected to each other front and back, and are embedded between the innermost longitudinal insulation block and the roller surface of the transmission roller; the top surface or bottom surface of the detachable insulation block is against the bottom surface or top surface of the innermost insulation sheet; A first semicircular hole is formed on the top or bottom surface of the detachable heat-insulating block near the driving roller, and the first semicircular hole penetrates the detachable heat-insulating block from left to right; a second semicircular hole is formed on the top or bottom surface of the longitudinal heat-insulating block near the driving roller, and the second semicircular hole penetrates the longitudinal heat-insulating block from left to right; the first semicircular hole and the second semicircular hole are aligned left and right and are connected; The first semicircular hole and the second semicircular hole are connected to each other and are used to accommodate the transmission roller.

8. The heating furnace with air supply device according to claim 7, characterized in that: The insulation layer of the heating furnace further includes a plurality of lining insulation sheets, a first fixing sheet, a first rivet, a second fixing sheet and a second rivet; The plurality of lining insulation sheets are divided into five groups; the plurality of lining insulation sheets in one group are connected front to back and cover the inner side surface of the innermost insulation sheet or the top surface of the transverse insulation block located on the lower furnace body; The top surface or bottom surface of the lining insulation sheet covering the inner side surface of the innermost insulation sheet abuts against the bottom surface or top surface of the detachable insulation block; The first fixing plate is located above the transmission roller, one end of the first rivet is fixed to the first fixing plate, and the other end of the first rivet passes through the detachable heat-insulating block and the side wall of the upper furnace body in sequence and is fixed to the outer side surface of the upper furnace body; the first fixing plate passes over the gap between the heat-insulating sheet and the detachable heat-insulating block, and the first fixing plate abuts against the inner side surface of the heat-insulating sheet and the inner side surface of the detachable heat-insulating block; The second fixing plate is located between the two transmission rollers facing each other and below the transmission rollers; One end of the second rivet is fixed to the second fixing plate, and the other end of the second rivet passes through the detachable heat-insulating block and the side wall of the lower furnace body in sequence and is fixed to the outer side surface of the lower furnace body; the second fixing plate abuts against the inner side surface of the detachable heat-insulating block; The transverse insulation block, the detachable insulation block and the lining insulation sheet are all aluminum silicate ceramic fiber boards.

9. A glass tempering production line, characterized in that: Use the heating furnace with air supply device according to claim 8.

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