A glass tempering production line using a convection air distribution structure

Abstract

The present invention relates to glass tempering equipment and discloses a glass tempering production line using a convection air distribution structure. The convection air conveying mechanism also includes a convection air duct and a plurality of convection tubes. The convection air duct includes a plurality of air pressure distribution boxes. The air pressure distribution box is provided with a partition in a horizontal direction. The partition is provided with a plurality of first diversion holes. A plurality of convection tubes are arranged in a group below each group of heating wires. The convection tubes include an inner tube and an outer tube that are nested inside and outside. The top of the inner tube is provided with a plurality of second diversion holes arranged at intervals along the length of the inner tube. The bottom of the outer tube is provided with a plurality of third diversion holes arranged at intervals along the length of the outer tube. The second diversion holes and the third diversion holes are respectively connected to the air pressure equalization cavity between the outer wall of the inner tube and the inner wall of the outer tube. The convection air output from the third diversion hole has the function of twice equalizing the air pressure, thereby improving the consistency of the convection air pressure and improving the heating uniformity of the tempered glass in the heating furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of glass tempering equipment, and in particular to a glass tempering production line using a convection air distribution structure. Background Art

[0002] The heating furnaces in the prior art are all provided with convection air delivery pipelines, through which the convection air output by the convection air delivery pipelines adjusts the temperature distribution uniformity of the heating space between the heating wire and the surface of the tempered glass, thereby improving the heating uniformity of the tempered glass in the heating furnace and avoiding defects on the surface of the tempered glass caused by uneven heating.

[0003] The Chinese invention patent with publication number CN114956534A discloses a high-efficiency and energy-saving convection system for a glass heating furnace. The system is equipped with multiple heat exchangers for recovering the heat of the exhaust gas. This system occupies a large amount of air flow space in the heating furnace, seriously affecting the fluidity of the convection wind in the furnace and resulting in poor temperature distribution uniformity in the furnace.

[0004] The Chinese utility model patent with announcement number CN217077395U discloses a convection tube including an upper convection section and a lower convection section. The upper convection section is distributed above the heating wire, and the lower convection section is distributed below the heating wire. At the same time, it occupies the space above and below the heating wire. Not only is the structure complex, but it also occupies more space for air flow in the heating furnace, thereby affecting the flow effect of the convection wind in the heating furnace, and further affecting the uniformity of the temperature distribution in the heating furnace. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide a glass tempering production line using a convection air distribution structure, which can improve the temperature distribution uniformity in the heating furnace.

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

[0007] A glass tempering production line using a convection air distribution structure includes a heating furnace located between an upper platen and a lower platen, wherein a plurality of heating wires are arranged at intervals within the heating furnace, and a convection air delivery mechanism including a convection air duct and a plurality of convection tubes; the convection air duct includes a plurality of air pressure distribution boxes;

[0008] A partition plate is provided in the wind pressure distribution box along a horizontal direction; the periphery of the partition plate is connected to the inner wall of the wind pressure distribution box; the partition plate is provided with a plurality of first diversion holes, which are arranged at intervals and pass through the plate surface of the partition plate;

[0009] A plurality of convection tubes are arranged at intervals below each group of heating wires, and the convection tubes include an inner tube and an outer tube that are sheathed inside and outside; the left and right ends of the inner tube are exposed at the left and right ends of the outer tube, and the left and right ends of the inner tube are respectively connected to the output end of the convection fan outside the furnace through a convection air duct; the top of the inner tube is provided with a plurality of second diversion holes arranged at intervals along the length direction of the inner tube, and the second diversion holes pass through the tube wall of the inner tube; the bottom of the outer tube is provided with a plurality of third diversion holes arranged at intervals along the length direction of the outer tube, and the third diversion holes pass through the tube wall of the outer tube; the cavity between the outer wall of the inner tube and the inner wall of the outer tube forms a wind pressure equalization cavity, and the second diversion hole and the third diversion hole are respectively connected to the wind pressure equalization cavity; the third diversion hole faces downwardly toward the top surface of the glass to be tempered;

[0010] All the convection tubes in the heating furnace are arranged at equal intervals along the front-to-back direction, and the center points of all the third diversion holes are located in the same horizontal plane.

[0011] Furthermore, the convection air duct further includes two air supply ducts and multiple air inlet ducts;

[0012] The air supply pipe extending in the front-to-back direction is installed on both the left and right sides above the heating furnace; the input end of the air supply pipe is connected to the output end of the convection fan, and the top end of the air inlet pipe is connected to the output end of the air supply pipe;

[0013] The air pressure distribution box includes a box body; the hollow box body extends in the front-to-back direction, the strip-shaped partition is installed in the box body, the bottom end of the air inlet pipe is connected to the top of the box body; the left and right ends of the inner tube are respectively connected to the bottoms of the two box bodies separated on the left and right sides;

[0014] The air supply pipe, the air inlet pipe and the air pressure distribution box connected in sequence constitute the convection air duct.

[0015] Specifically, the plurality of third diversion holes at the bottom of the outer tube near the furnace door of the heating furnace are arranged in a straight line extending in the left-right direction, and the plurality of third diversion holes arranged in a straight line are located on one side of the bottom of the corresponding outer tube facing the middle of the heating furnace;

[0016] The plurality of third diversion holes at the bottom of the outer tube located in the heating furnace and not near the furnace door of the heating furnace are arranged in two straight lines extending in the left-right direction, and two third diversion holes located in the front and rear of the same outer tube and spaced apart from each other are respectively located on the front and rear sides of the bottom of the outer tube;

[0017] The central axes of the inner tube and the outer tube are the same straight line, and the angle between the line connecting the center point of the third diversion hole and the central axis and the vertical plane where the central axis is located is angle a, and the angle a is 30°-45°.

[0018] Furthermore, the convection air conveying mechanism further includes a connecting pipe, a sealing plate, a hanging bracket and a regulating valve;

[0019] The wind pressure distribution box also includes an output pipe;

[0020] The top end of the output tube passes through the bottom of the box body and is connected to the inner cavity of the box body, and the bottom end of the output tube is a free end extending downward;

[0021] The top of the connecting pipe is welded to the bottom surface of the box body, and the connecting pipe is sleeved on the outer periphery of the bottom end of the output pipe; the left end or the right end of the inner pipe is connected to the side wall of the connecting pipe, and the top surface of the sealing plate is detachably abutted against and seals the bottom end of the connecting pipe;

[0022] The suspension frame includes two suspension rods, two cross rods, a plurality of hooks and a plurality of pins; the hooks are concave curved hooks, and the front and rear ends of the hooks face upward and are both provided with pin holes;

[0023] The crossbar extends in the front-to-back direction, and two crossbars are placed on the top surfaces of the plurality of outer tubes in the same group at intervals.

[0024] The top ends of the two suspension rods spaced apart from each other are detachably fixed to the top of the heating furnace, and the bottom ends of the suspension rods are detachably fixed to the cross bar.

[0025] The hook portion of each hook is fitted onto the outer circumference of one of the outer tubes from below, and the two hooks aligned on the left and right sides respectively abut against the left and right sides of the crossbar, and the two pins respectively pass through the crossbar and the corresponding pin holes to fix the two hooks to the left and right sides of the crossbar;

[0026] The regulating valve is installed at the connection between the air inlet pipe and the air supply pipe, and the regulating valve is used to adjust the air pressure input into the air inlet pipe.

[0027] Furthermore, it also includes a glass tempering section, which is arranged between the heating furnace and the lower sheet table;

[0028] The glass tempering section is provided with a quenching fan and a cooling fan;

[0029] The glass tempering section is provided with a plurality of tempering section drive rollers arranged in a front-to-rear manner. The plurality of tempering section drive rollers form a drive roller group and are driven by the same set of transmission devices. The top surfaces of the plurality of tempering section drive rollers form a tempering conveying surface; the rear section of the tempering conveying surface is a rapid cooling area;

[0030] The quenching fan and the cooling fan operate at different times; the quenching fan outputs high-pressure quenching air to the quenching area; and the cooling fan outputs low-pressure cooling air to the entire tempering conveying surface.

[0031] Furthermore, the glass tempering section is also provided with an air collecting box, an air grid assembly and a gate valve;

[0032] The air collecting box extends in the front-to-back direction, and the air grille assembly includes an upper air grille assembly and a lower air grille assembly;

[0033] A plurality of the tempering section transmission rollers are mounted between the upper air grid assembly and the lower air grid assembly aligned vertically;

[0034] The right side of the upper air grille assembly and the right side of the lower air grille assembly are provided with a plurality of cold air inlets in a corresponding manner.

[0035] The right side of the air collecting box is provided with a cooling air inlet and a quenching air inlet adjacent to each other in front and back, and the left side of the air collecting box is provided with a plurality of upper air outlets and a plurality of lower air outlets corresponding to each other in the upper and lower directions;

[0036] The gate valve is installed on the air collecting box along a length direction perpendicular to the air collecting box, and the gate valve is located between the cooling air inlet and the quenching air inlet;

[0037] The cold air outlet of the cooling fan is connected to the cooling air inlet, and the cold air outlet of the quenching fan is connected to the quenching air inlet; the upper air outlet is connected to the cold air inlet corresponding to the upper air grid assembly, and the lower air outlet is connected to the cold air inlet corresponding to the lower air grid assembly;

[0038] The gate valve opens and closes following the start and stop of the cooling fan.

[0039] Specifically, the transmission device includes a sprocket transmission assembly and a drive motor;

[0040] The tempering section drive rollers extend in the left-right direction, and the left ends of the plurality of tempering section drive rollers are respectively connected to the sprocket drive assembly, and the drive motor drives the sprocket drive assembly.

[0041] Specifically, the cooling fan includes a first motor, a first housing, a first air duct and a first air guide cover;

[0042] The first motor is installed in the first housing, the input end of the first air duct is connected to the air outlet of the first housing, the air outlet of the first housing serves as the cold air outlet, the output end of the first air duct is connected to the input end of the first air guide cover, and the output end of the first air guide cover is connected to the cooling air inlet;

[0043] The first air duct and the first air guide cover form a cooling air delivery channel;

[0044] The first housing is located in the front right of the cooling air inlet; the first air guide cover is a trumpet shape that gradually expands along the air flow direction;

[0045] The plane where the opening of the cooling air inlet is located is parallel to the extension direction of the air collecting box;

[0046] The horizontal angle between the central axis of the first air guide cover and the plane where the opening of the cooling air inlet is located is angle b, and the angle b is 40°-45°.

[0047] Specifically, the quenching fan includes a second motor, a second housing, a second air duct and a second air guide cover;

[0048] The second motor is installed in the second housing, the input end of the second air duct is connected to the air outlet of the second housing, the output end of the second air duct is connected to the input end of the second air duct, and the output end of the second air duct is connected to the quenching air inlet;

[0049] The second air duct and the second air guide cover form a quenching air delivery channel;

[0050] The second housing is located directly to the right of the quenching air inlet; and the extension direction of the quenching air delivery channel is perpendicular to the plane where the opening of the quenching air inlet is located.

[0051] Furthermore, the glass tempering section is further provided with a first flap gate valve and a second flap gate valve;

[0052] The first flap gate valve is installed in the first air duct, and the first flap gate valve is used to control the opening and closing of the first air duct;

[0053] The second flap gate valve is installed in the second air duct, and the second flap gate valve is used to control the opening and closing of the second air duct.

[0054] The above-mentioned technical solution of the present invention has a glass tempering production line using a convection wind distribution structure as described below, and the convection wind conveying mechanism includes an air pressure distribution box, and the inner cavity of the air pressure distribution box is provided with a partition, so that the air pressure distribution box has an air pressure distribution function for the input convection wind, and the convection wind in the inner cavity of the air pressure distribution box is homogenized and then input into the convection tube, and then the convection wind is homogenized again in the air pressure equalization cavity in the convection tube. Therefore, the glass tempering production line using a convection wind distribution structure of the present invention has the function of twice equalizing the air pressure of the convection wind output from the third diversion hole, which can effectively improve the consistency of the convection wind pressure output from each third diversion hole, thereby improving the temperature distribution of the heating furnace and the convection wind generates a uniformly distributed air pressure on the surface of the glass to be tempered, thereby improving the heating uniformity and thermal energy conversion rate of the glass to be tempered in the heating furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic top view of an embodiment of a glass tempering production line using a convection air distribution structure according to the present invention;

[0056] Figure 2 This is a schematic diagram of the installation structure of the heating furnace and the convection air conveying mechanism of the glass tempering production line using the convection air distribution structure of the present invention;

[0057] Figure 3 This is a structural schematic diagram of some components of a convection air delivery mechanism of an embodiment of the glass tempering production line using the convection air distribution structure of the present invention;

[0058] Figure 4 for Figure 3 A partial enlarged view of part A;

[0059] Figure 5 This is a schematic diagram of the internal structure of an air pressure distribution box of an embodiment of the glass tempering production line using the convection air distribution structure of the present invention;

[0060] Figure 6 Schematic diagram of the opening structure of the distribution pipe near the furnace door of an embodiment of the glass tempering production line using the convection air distribution structure of the present invention;

[0061] Figure 7 A schematic diagram of the opening structure of the distribution pipe not close to the furnace door of an embodiment of the glass tempering production line using the convection air distribution structure of the present invention;

[0062] Figure 8 1 is a schematic diagram of the structure of a glass tempering section of a glass tempering production line using a convection air distribution structure according to the present invention, viewed from above;

[0063] Figure 9 yes Figure 8Schematic diagram of the cross-sectional structure of the middle CC part;

[0064] Figure 10 yes Figure 8 Schematic diagram of the cross-sectional structure of the middle BB area;

[0065] Among them: loading platform 1; heating furnace 2; glass tempering section 3; unloading platform 4; convection air conveying mechanism 5; conveying line 6;

[0066] Heating wire 21; quenching fan 31; cooling fan 32; air collecting box 33; tempering section drive roller 34; wind grid assembly 35; gate valve 36; second flap gate valve 37; first flap gate valve 38; sprocket drive assembly 39; drive motor 30;

[0067] Air supply pipe 51; air inlet pipe 52; air pressure distribution box 53; convection pipe 54; connecting pipe 55; sealing plate 56; hanging bracket 57; regulating valve 58; tempering conveying section 61;

[0068] Tempered conveying surface 300; quenching area 301; second housing 311; second air duct 312; second air guide cover 313; first housing 321; first air duct 322; first air guide cover 323; quenching air inlet 331; cooling air inlet 332; upper air outlet 333; lower air outlet 334; upper air grille assembly 351; lower air grille assembly 352;

[0069] Box body 531; partition 532; output pipe 533; inner pipe 541; outer pipe 542; suspension rod 571; cross bar 572; hook 573; first diversion hole 5321; second diversion hole 5411; third diversion hole 5421. DETAILED DESCRIPTION

[0070] The following is combined with Figure 1-10 The technical solution of the present invention is further illustrated through specific implementation methods.

[0071] 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.

[0072] 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.

[0073] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0074] A glass tempering production line using a convection air distribution structure includes a heating furnace 2 located between an upper sheeting table 1 and a lower sheeting table 4. The heating furnace 2 is provided with a plurality of groups of heating wires 21 arranged at intervals. The heating furnace 2 also includes a convection air conveying mechanism 5. The convection air conveying mechanism 5 includes a convection air duct and a plurality of convection tubes 54. The convection air duct includes a plurality of air pressure distribution boxes 53.

[0075] A horizontal partition 532 is provided in the wind pressure distribution box 53; the periphery of the partition 532 is connected to the inner wall of the wind pressure distribution box 53; the partition 532 is provided with a plurality of first diversion holes 5321, which are arranged at intervals and penetrate the plate surface of the partition 532;

[0076] A plurality of convection tubes 54 are arranged at intervals below each group of heating wires 21. The convection tubes 54 include an inner tube 541 and an outer tube 542 that are sheathed inside and outside. The left and right ends of the inner tube 541 are exposed at the left and right ends of the outer tube 542. The left and right ends of the inner tube 541 are respectively connected to the output end of the convection fan outside the furnace through the convection air duct. The top of the inner tube 541 is provided with a plurality of second diversion holes 5411 arranged at intervals along the length direction of the inner tube 541. The second diversion holes 5411 penetrate The wall of the inner tube 541; the bottom of the outer tube 542 is provided with a plurality of third diversion holes 5421 arranged at intervals along the length direction of the outer tube 542, and the third diversion holes 5421 penetrate the wall of the outer tube 542; the cavity between the outer wall of the inner tube 541 and the inner wall of the outer tube 542 forms a wind pressure equalization cavity 540, and the second diversion hole 5411 and the third diversion hole 5421 are respectively connected to the wind pressure equalization cavity 540; the third diversion hole 5421 is downward toward the top surface of the glass to be tempered;

[0077] All the convection tubes 54 located in the heating furnace 2 are arranged at equal intervals along the front-to-back direction, and the center points of all the third diversion holes 5421 are located in the same horizontal plane.

[0078] Figure 1This is a layout diagram of the glass tempering production line using the convection air distribution structure of the present invention; Figure 2 The figure shows the internal structure of the heating furnace 2 of the glass tempering production line using the convection air distribution structure of the present invention, in which the convection tube 54 is located below the heating wire 21 .

[0079] like Figure 2-7 As shown, in the glass tempering production line using a convection wind distribution structure of the present invention, the convection wind conveying mechanism 5 includes a wind pressure distribution box 53, and the inner cavity of the wind pressure distribution box 53 is provided with a partition 532, so that the wind pressure distribution box 53 has a wind pressure distribution function for the input convection wind, and the convection wind in the inner cavity of the wind pressure distribution box 53 is homogenized and then input into the convection tube 54, and then the convection wind is homogenized again in the wind pressure homogenization cavity 540 in the convection tube 54. Therefore, the glass tempering production line using a convection wind distribution structure of the present invention has a function of twice equalizing the wind pressure of the convection wind output from the third diversion hole 5421, which can effectively improve the consistency of the convection wind pressure output from each third diversion hole 5421, thereby improving the temperature distribution of the heating furnace 2 and the convection wind generates a wind pressure with uniform pressure distribution on the surface of the glass to be tempered, thereby improving the heating uniformity and thermal energy conversion rate of the glass to be tempered in the heating furnace 2.

[0080] In addition, the convection tube 54 included in the glass tempering production line using the convection air distribution structure of the present invention only occupies the space below the heating wire 21, and has the advantages of simple structure and easy installation.

[0081] Furthermore, the convection air duct further includes two air supply ducts 51 and multiple air inlet ducts 52;

[0082] The air supply pipe 51 extending in the front-to-back direction is installed on both the left and right sides above the heating furnace 2; the input end of the air supply pipe 51 is connected to the output end of the convection fan, and the top end of the air inlet pipe 52 is connected to the output end of the air supply pipe 51;

[0083] The air pressure distribution box 53 includes a box body 531; the hollow box body 531 extends in the front-to-back direction, and the strip-shaped partition plate 532 is installed in the box body 531. The bottom end of the air inlet pipe 52 is connected to the top of the box body 531; the left and right ends of the inner tube 541 are respectively connected to the bottoms of the two box bodies 531 separated on the left and right sides.

[0084] The air supply pipe 51 , the air inlet pipe 52 and the air pressure distribution box 53 connected in sequence constitute the convection air duct.

[0085] like Figure 3-5As shown, the input end of the air supply pipe 51 is connected to the air outlet of the convection fan, and the convection air is sequentially transported to the convection pipe 54 through the convection air pipeline composed of the air supply pipe 51, the air inlet pipe 52 and the air pressure distribution box 53.

[0086] Specifically, the plurality of third diversion holes 5421 at the bottom of the outer tube 542 near the furnace door of the heating furnace 2 are arranged in a straight line extending in the left-right direction. The plurality of third diversion holes 5421 arranged in a straight line are located on one side of the bottom of the corresponding outer tube 542 toward the middle of the heating furnace 2.

[0087] The plurality of third diversion holes 5421 at the bottom of the outer tube 542 located in the heating furnace 2 and not near the furnace door of the heating furnace 2 are arranged in two straight lines extending in the left-right direction. Two third diversion holes 5421 located in the front and rear of the same outer tube 542 and spaced apart from each other are respectively located at the front and rear sides of the bottom of the outer tube 542.

[0088] The central axes of the inner tube 541 and the outer tube 542 are the same straight line, and the angle between the line connecting the center point of the third diversion hole 5421 and the central axis and the vertical plane where the central axis is located is angle a, and the angle a is 30°-45°.

[0089] like Figure 6 As shown, the third diversion holes 5421 at the bottom of the outer tube 542 near the furnace door of the heating furnace 2 are arranged in a straight line and are located on the side facing inward toward the middle of the heating furnace 2. This arrangement can prevent the heat of the heating furnace 2 from being leaked out by the convection wind blowing outward when the front furnace door or the rear furnace door is opened.

[0090] like Figure 7 As shown, multiple third diversion holes 5421 at the bottom of the outer tube 542 that is not close to the furnace door of the heating furnace 2 are arranged into two straight lines extending in the left-right direction, so that the convection wind output by the third diversion holes 5421 on the front side of the bottom of the outer tube 542 and the convection wind output by the third diversion holes 5421 on the rear side of the bottom of another outer tube 542 located in front form turbulence due to collision, thereby further improving the uniformity of temperature distribution in the heating furnace 2.

[0091] like Figure 6 and Figure 7 As shown, when the angle a is 30°-45°, the convection winds output by the two adjacent outer tubes 542 can form turbulent flows that shear each other and move downward, which has a good effect on improving the uniformity of temperature distribution in the heating furnace 2.

[0092] Furthermore, the convection air conveying mechanism 5 further includes a connecting pipe 55, a sealing plate 56, a hanging bracket 57 and a regulating valve 58;

[0093] The wind pressure distribution box 53 further includes an output pipe 533;

[0094] The top end of the output tube 533 passes through the bottom of the box body 531 and is connected to the inner cavity of the box body 531. The bottom end of the output tube 533 is a free end extending downward.

[0095] The top of the connecting tube 55 is welded to the bottom surface of the box body 531, and the connecting tube 55 is sleeved around the outer periphery of the bottom end of the output tube 533. The left or right end of the inner tube 541 is connected to the side wall of the connecting tube 55. The top surface of the sealing plate 56 is detachably abutted against and seals the bottom end of the connecting tube 55.

[0096] The suspension frame 57 includes two suspension rods 571, two cross bars 572, a plurality of hooks 573 and a plurality of pins; the hooks 573 are concave hooks, and the front and rear ends of the hooks 573 face upward and are both provided with pin holes;

[0097] The crossbar 572 extends in the front-to-back direction, and two crossbars 572 are placed on the top surfaces of the plurality of outer tubes 542 in the same group at intervals.

[0098] The top ends of the two suspension rods 571 spaced apart from each other are detachably fixed to the top of the heating furnace 2, and the bottom ends of the suspension rods 571 are detachably fixed to the cross bar 572.

[0099] The hook portion of each hook 573 is fitted onto the outer circumference of one of the outer tubes 542 from below, and the two hooks 573 aligned on the left and right sides respectively abut against the left and right sides of the crossbar 572. The two pins respectively pass through the crossbar 572 and the corresponding pin holes to fix the two hooks 573 to the left and right sides of the crossbar 572.

[0100] The regulating valve 58 is installed at the connection between the air inlet pipe 52 and the air supply pipe 51 . The regulating valve 58 is used to adjust the air pressure input into the air inlet pipe 52 .

[0101] like Figure 3-5 As shown, the bottom end of the connecting pipe 55 is set as a detachable sealing structure, which can improve the convenience of cleaning the residue in the wind pressure distribution box 53 and the residue in the convection pipe 54.

[0102] like Figure 3 As shown, a group of convection tubes 54 are suspended and fixed by two suspension brackets 57. It is only necessary to open four suspension holes on the top of the heating furnace 2 for fixing the top ends of the four suspension rods 571 to ensure the installation stability of the convection tubes 54. Such installation can also avoid opening too many suspension holes on the top of the heating furnace 2 for hanging the convection tubes 54 one by one, thereby reducing heat leakage in the suspension holes.

[0103] like Figure 2 As shown, the air pressure input from the air supply pipe 51 to the air inlet pipe 52 is adjusted by the regulating valve 58 so that the input air pressure of each air inlet pipe 52 remains consistent, thereby ensuring the uniformity of the wind pressure distribution of the input convection wind from the source.

[0104] Furthermore, it also includes a glass tempering section 3, which is arranged between the heating furnace 2 and the lower sheet table 4;

[0105] The glass tempering section 3 is provided with a quenching fan 31 and a cooling fan 32;

[0106] The glass tempering section 3 is provided with a plurality of tempering section drive rollers 34 arranged in a front-to-rear manner. The plurality of tempering section drive rollers 34 form a drive roller group and are driven by the same set of transmission devices. The top surfaces of the plurality of tempering section drive rollers 34 form a tempering conveying surface 300. The rear section of the tempering conveying surface 300 is a rapid cooling area 301.

[0107] The quenching fan 31 and the cooling fan 32 operate at different times; the quenching fan 31 outputs high-pressure quenching air to the quenching area 301 ; the cooling fan 32 outputs low-pressure cooling air to the entire tempering conveying surface 300 .

[0108] When a group of glasses to be tempered enter the heating furnace 2 in sequence through the upper plate 1, are heated to the set temperature in the heating furnace 2, and then leave the heating furnace 2 in sequence and enter the quenching area 301, the quenching fan 31 is started, and the quenching fan 31 outputs high-pressure quenching air to the quenching area 301, so that each piece of glass to be tempered passing through the quenching area 301 is quenched and tempered. When the group of glasses to be tempered has completed quenching in the quenching area 301, the group of glasses to be tempered covers the tempering conveying surface 300. At this time, the quenching fan 31 stops running, and the cooling fan is started and outputs cooling air to the tempering conveying surface 300, so that each piece of glass on the tempering conveying surface 300 is cooled to 50-60°C, and then output to the lower plate 4 to be cooled to room temperature. This is the cycle operation of the tempering treatment of a group of glasses to be tempered.

[0109] In the prior art, the glass tempering production line comprises a set of air grille assemblies and a matching conveyor line in the passing section, and another set of air grille assemblies and another matching conveyor line in the cooling section. Each conveyor line is separately equipped with a drive motor and a sprocket transmission assembly.

[0110] The multiple tempering section drive rollers 34 of the present invention form a drive roller group and are driven by the same set of transmission devices, which can not only simplify the components of the production line but also save manufacturing costs.

[0111] Furthermore, the glass tempering section 3 is also provided with an air collecting box 33, an air grid assembly 35 and a gate valve 36;

[0112] The air collecting box 33 extends in the front-to-back direction, and the air grille assembly 35 includes an upper air grille assembly 351 and a lower air grille assembly 352;

[0113] A plurality of the tempering section transmission rollers 34 are mounted between the upper air grid assembly 351 and the lower air grid assembly 352 which are aligned with each other.

[0114] The right side of the upper air grille assembly 351 and the right side of the lower air grille assembly 352 are provided with a plurality of cold air inlets corresponding to each other.

[0115] The right side of the air collecting box 33 is provided with a cooling air inlet 332 and a quenching air inlet 331 adjacent to each other in front and back, and the left side of the air collecting box 33 is provided with a plurality of upper air outlets 333 and a plurality of lower air outlets 334 corresponding to each other in the upper and lower directions.

[0116] The gate valve 36 is installed on the air collecting box 33 along a longitudinal direction perpendicular to the air collecting box 33 , and the gate valve 36 is located between the cooling air inlet 332 and the quenching air inlet 331 ;

[0117] The cold air outlet of the cooling fan 32 is connected to the cooling air inlet 332, and the cold air outlet of the quenching fan 31 is connected to the quenching air inlet 331; the upper air outlet 333 is connected to the cold air inlet corresponding to the upper air grid assembly 351, and the lower air outlet 334 is connected to the cold air inlet corresponding to the lower air grid assembly 352;

[0118] The gate valve 36 opens and closes according to the start and stop of the cooling fan 32 .

[0119] like Figure 8-10 As shown, the gate valve 36 opens and closes following the start and stop of the cooling fan 32, and the quenching fan 31 and the cooling fan 32 operate at staggered times, that is, when the quenching fan 31 is running, the gate valve 36 is closed and separates the inner cavity of the air collecting box 33 into two sections, front and back, and the multiple upper air outlets 333 and the multiple lower air outlets 334 located at the front end of the air collecting box 33 output high-pressure quenching air to the quenching area 301 from the upper and lower directions respectively through the upper air grid assembly 351 and the lower air grid assembly 352 aligned with each other.

[0120] On the contrary, when the quenching fan 31 is shut down and the cooling fan 32 is running, the gate valve 36 is opened, and all the upper air outlets 333 and lower air outlets 334 connected to the air collecting box 33 output low-pressure cooling air from the upper and lower directions to the tempering conveying surface 300 through all the upper air grid assemblies 51 and all the lower air grid assemblies 52 respectively.

[0121] Specifically, the transmission device includes a sprocket transmission assembly 39 and a drive motor 30;

[0122] The tempered section drive rollers 34 extend in the left-right direction. The left ends of the plurality of tempered section drive rollers 34 are respectively connected to the sprocket drive assembly 39 . The drive motor 30 drives the sprocket drive assembly 39 .

[0123] like Figure 8 and Figure 10 As shown, the sprocket transmission assembly 39 is driven by the drive motor 30, and the multiple tempering segment drive rollers 34 forming a drive roller group are driven to rotate synchronously, so as to drive the group of tempered glasses to move back and forth in the tempering conveying surface 300 and be cooled by the cooling air, so that the surface temperature of the group of tempered glasses is reduced to room temperature, thereby completing the cooling and meeting the process requirements of quality control.

[0124] Specifically, the cooling fan 32 includes a first motor, a first housing 321 , a first air duct 322 and a first air guide cover 323 ;

[0125] The first motor is installed in the first housing 321. The input end of the first air duct 322 is connected to the air outlet of the first housing 321. The air outlet of the first housing 321 serves as the cold air outlet. The output end of the first air duct 322 is connected to the input end of the first air guide cover 323. The output end of the first air guide cover 323 is connected to the cooling air inlet 332.

[0126] The first air duct 322 and the first air guide cover 323 form a cooling air delivery channel;

[0127] The first housing 321 is located in the front right of the cooling air inlet 332; the first air guide cover 323 is a trumpet shape that gradually expands along the air flow direction;

[0128] The plane where the opening of the cooling air inlet 332 is located is parallel to the extension direction of the air collecting box 33;

[0129] The horizontal angle between the central axis of the first air guide cover 323 and the plane where the opening of the cooling air inlet 332 is located is angle b, and the angle b is 40°-45°.

[0130] like Figure 8 and Figure 10 As shown, the cooling fan 32 of the present invention guides the cooling air into the cooling air inlet 332 along the oblique direction through the cooling air delivery channel. In this way, the phenomenon of high wind pressure in the middle of the air collecting box 33 caused by the air outlet of the cooling fan 32 being aligned with the cooling air inlet 332 can be avoided, thereby improving the uniformity of the wind pressure distribution of the cooling air in the air collecting box 33, and then improving the consistency of the cooling temperature of the glass tempering, thereby improving the quality of the glass tempering.

[0131] like Figure 8 and Figure 10 As shown, the angle b is 40°-45°, and the cooling air entering the air collecting box 33 through the cooling air delivery channel has better wind pressure distribution uniformity; especially when the angle a is 40°, the uniformity of the wind pressure distribution of the cooling air in the air collecting box 33 of the present invention is in the best state.

[0132] Specifically, the quenching fan 31 includes a second motor, a second housing 311, a second air duct 312 and a second air guide cover 313;

[0133] The second motor is installed in the second housing 311. The input end of the second air duct 312 is connected to the air outlet of the second housing 311. The output end of the second air duct 312 is connected to the input end of the second air guide cover 313. The output end of the second air guide cover 313 is connected to the quenching air inlet 331.

[0134] The second air duct 312 and the second air guide cover 313 form a quenching air delivery channel;

[0135] The second housing 311 is located right to the quenching air inlet 331 ; the extension direction of the quenching air delivery channel is perpendicular to the plane where the opening of the quenching air inlet 331 is located.

[0136] like Figure 8 and Figure 9 As shown, this can reduce the wind pressure loss of the quenching air in the quenching air conveying channel, maximize the rapid cooling effect of the quenching air, and thus ensure the quality of glass tempering.

[0137] Furthermore, the glass tempering section 3 is further provided with a first flap gate valve 38 and a second flap gate valve 37;

[0138] The first flap gate valve 38 is installed in the first air duct 322 and is used to control the opening and closing of the first air duct 322;

[0139] The second flap gate valve 37 is installed in the second air duct 312 , and the second flap gate valve 37 is used to control the opening and closing of the second air duct 312 .

[0140] like Figure 8 and Figure 10 As shown, at the moment of starting the cooling fan 32, the first flap gate valve 38 is first used to close the first air duct 322, which can avoid the cooling fan 32 from having excessive current due to no load. Then, after the cooling fan 32 is operating normally, the first flap gate valve 38 is opened and the conduction area of ​​the first air duct 322 is gradually increased, which can extend the service life of the cooling fan 32.

[0141] like Figure 8 and Figure 9 As shown, when the quenching fan 31 stops running, the gate valve 36 is opened, and the cooling fan 32 is turned on and outputs cooling air, the second air duct 312 is closed by the second flap gate valve 37 to prevent the cooling air from leaking through the quenching air delivery channel.

[0142] In summary, if Figure 1-6 In the embodiment of the present invention shown, the glass tempering production line using a convection wind distribution structure, the convection wind conveying mechanism 5 includes a wind pressure distribution box 53, and the inner cavity of the wind pressure distribution box 53 is provided with a partition 532, so that the wind pressure distribution box 53 has a wind pressure distribution function for the input convection wind, and the convection wind in the inner cavity of the wind pressure distribution box 53 is homogenized and then input into the convection tube 54, and then the convection wind is homogenized again in the wind pressure homogenization cavity 540 in the convection tube 54. Therefore, the glass tempering production line using a convection wind distribution structure of the present invention has the function of twice equalizing the wind pressure of the convection wind output from the third diversion hole 5421, which can effectively improve the consistency of the convection wind pressure output from each third diversion hole 5421, thereby improving the temperature distribution of the heating furnace 2 and the convection wind generates a wind pressure with uniform pressure distribution on the surface of the glass to be tempered, thereby improving the heating uniformity and thermal energy conversion rate of the glass to be tempered in the heating furnace 2.

[0143] 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 glass tempering production line using a convection air distribution structure, comprising a heating furnace located between an upper sheeting table and a lower sheeting table, wherein a plurality of groups of heating wires arranged at intervals are provided in the heating furnace, characterized in that: It also includes a convection air delivery mechanism, the convection air delivery mechanism includes a convection air pipeline and a plurality of convection tubes; the convection air pipeline includes a plurality of air pressure distribution boxes; A partition plate is provided in the wind pressure distribution box along a horizontal direction; the periphery of the partition plate is connected to the inner wall of the wind pressure distribution box; the partition plate is provided with a plurality of first diversion holes, which are arranged at intervals and pass through the plate surface of the partition plate; A plurality of convection tubes are arranged at intervals below each group of heating wires, and the convection tubes include an inner tube and an outer tube that are sheathed inside and outside; the left and right ends of the inner tube are exposed at the left and right ends of the outer tube, and the left and right ends of the inner tube are respectively connected to the output end of the convection fan outside the furnace through a convection air duct; the top of the inner tube is provided with a plurality of second diversion holes arranged at intervals along the length direction of the inner tube, and the second diversion holes pass through the tube wall of the inner tube; the bottom of the outer tube is provided with a plurality of third diversion holes arranged at intervals along the length direction of the outer tube, and the third diversion holes pass through the tube wall of the outer tube; the cavity between the outer wall of the inner tube and the inner wall of the outer tube forms a wind pressure equalization cavity, and the second diversion hole and the third diversion hole are respectively connected to the wind pressure equalization cavity; the third diversion hole faces downwardly toward the top surface of the glass to be tempered; All the convection tubes located in the heating furnace are arranged at equal intervals in the front-to-back direction, and the center points of all the third diversion holes are located in the same horizontal plane; It also includes a glass tempering section, which is arranged between the heating furnace and the lower sheet table; The glass tempering section is provided with a quenching fan and a cooling fan; The glass tempering section is provided with a plurality of tempering section drive rollers arranged in a front-to-rear manner. The plurality of tempering section drive rollers form a drive roller group and are driven by the same set of transmission devices. The top surfaces of the plurality of tempering section drive rollers form a tempering conveying surface; the rear section of the tempering conveying surface is a rapid cooling area; The quenching fan and the cooling fan operate at different times; the quenching fan outputs high-pressure quenching air to the quenching area; and the cooling fan outputs low-pressure cooling air to the entire tempering conveying surface.

2. The glass tempering production line using a convection air distribution structure according to claim 1, characterized in that: The convection air duct also includes two air supply ducts and multiple air inlet ducts; The air supply pipe extending in the front-to-back direction is installed on both the left and right sides above the heating furnace; the input end of the air supply pipe is connected to the output end of the convection fan, and the top end of the air inlet pipe is connected to the output end of the air supply pipe; The air pressure distribution box includes a box body; the hollow box body extends in the front-to-back direction, the strip-shaped partition is installed in the box body, the bottom end of the air inlet pipe is connected to the top of the box body; the left and right ends of the inner tube are respectively connected to the bottoms of the two box bodies separated on the left and right sides; The air supply pipe, the air inlet pipe and the air pressure distribution box connected in sequence constitute the convection air duct.

3. The glass tempering production line using a convection air distribution structure according to claim 2, characterized in that: The plurality of third diversion holes at the bottom of the outer tube near the furnace door of the heating furnace are arranged in a straight line extending in the left-right direction, and the plurality of third diversion holes arranged in a straight line are located on one side of the bottom of the corresponding outer tube facing the middle of the heating furnace; The plurality of third diversion holes at the bottom of the outer tube located in the heating furnace and not near the furnace door of the heating furnace are arranged in two straight lines extending in the left-right direction, and two third diversion holes located in the front and rear of the same outer tube and spaced apart from each other are respectively located on the front and rear sides of the bottom of the outer tube; The central axes of the inner tube and the outer tube are the same straight line, and the angle between the line connecting the center point of the third diversion hole and the central axis and the vertical plane where the central axis is located is angle a, and the angle a is 30°-45°.

4. The glass tempering production line using a convection air distribution structure according to claim 2, characterized in that: The convection air conveying mechanism also includes a connecting pipe, a sealing plate, a hanging bracket and a regulating valve; The wind pressure distribution box also includes an output pipe; The top end of the output tube passes through the bottom of the box body and is connected to the inner cavity of the box body, and the bottom end of the output tube is a free end extending downward; The top of the connecting pipe is welded to the bottom surface of the box body, and the connecting pipe is sleeved on the outer periphery of the bottom end of the output pipe; the left end or the right end of the inner pipe is connected to the side wall of the connecting pipe, and the top surface of the sealing plate is detachably abutted against and seals the bottom end of the connecting pipe; The suspension frame includes two suspension rods, two cross rods, a plurality of hooks and a plurality of pins; the hooks are concave curved hooks, and the front and rear ends of the hooks face upward and are both provided with pin holes; The crossbar extends in the front-to-back direction, and two crossbars are placed on the top surfaces of the plurality of outer tubes in the same group at intervals. The top ends of the two suspension rods spaced apart from each other are detachably fixed to the top of the heating furnace, and the bottom ends of the suspension rods are detachably fixed to the cross bar. The hook portion of each hook is fitted onto the outer circumference of one of the outer tubes from below, and the two hooks aligned on the left and right sides respectively abut against the left and right sides of the crossbar, and the two pins respectively pass through the crossbar and the corresponding pin holes to fix the two hooks to the left and right sides of the crossbar; The regulating valve is installed at the connection between the air inlet pipe and the air supply pipe, and the regulating valve is used to adjust the air pressure input into the air inlet pipe.

5. The glass tempering production line using a convection air distribution structure according to claim 1, characterized in that: The glass tempering section is also provided with an air collecting box, an air grid assembly and a gate valve; The air collecting box extends in the front-to-back direction, and the air grille assembly includes an upper air grille assembly and a lower air grille assembly; A plurality of the tempering section transmission rollers are mounted between the upper air grid assembly and the lower air grid assembly aligned vertically; The right side of the upper air grille assembly and the right side of the lower air grille assembly are provided with a plurality of cold air inlets in a corresponding manner. The right side of the air collecting box is provided with a cooling air inlet and a quenching air inlet adjacent to each other in front and back, and the left side of the air collecting box is provided with a plurality of upper air outlets and a plurality of lower air outlets corresponding to each other in the upper and lower directions; The gate valve is installed on the air collecting box along a length direction perpendicular to the air collecting box, and the gate valve is located between the cooling air inlet and the quenching air inlet; The cold air outlet of the cooling fan is connected to the cooling air inlet, and the cold air outlet of the quenching fan is connected to the quenching air inlet; the upper air outlet is connected to the cold air inlet corresponding to the upper air grid assembly, and the lower air outlet is connected to the cold air inlet corresponding to the lower air grid assembly; The gate valve opens and closes following the start and stop of the cooling fan.

6. The glass tempering production line using a convection air distribution structure according to claim 5, characterized in that: The transmission device includes a sprocket transmission assembly and a drive motor; The tempering section drive rollers extend in the left-right direction, and the left ends of the plurality of tempering section drive rollers are respectively connected to the sprocket drive assembly, and the drive motor drives the sprocket drive assembly.

7. The glass tempering production line using a convection air distribution structure according to claim 5, characterized in that: The cooling fan includes a first motor, a first housing, a first air duct and a first air guide cover; The first motor is installed in the first housing, the input end of the first air duct is connected to the air outlet of the first housing, the air outlet of the first housing serves as the cold air outlet, the output end of the first air duct is connected to the input end of the first air guide cover, and the output end of the first air guide cover is connected to the cooling air inlet; The first air duct and the first air guide cover form a cooling air delivery channel; The first housing is located in the front right of the cooling air inlet; the first air guide cover is a trumpet shape that gradually expands along the air flow direction; The plane where the opening of the cooling air inlet is located is parallel to the extension direction of the air collecting box; The horizontal angle between the central axis of the first air guide cover and the plane where the opening of the cooling air inlet is located is angle b, and the angle b is 40°-45°.

8. The glass tempering production line using a convection air distribution structure according to claim 7, characterized in that: The quenching fan includes a second motor, a second housing, a second air duct and a second air guide cover; The second motor is installed in the second housing, the input end of the second air duct is connected to the air outlet of the second housing, the output end of the second air duct is connected to the input end of the second air duct, and the output end of the second air duct is connected to the quenching air inlet; The second air duct and the second air guide cover form a quenching air delivery channel; The second housing is located directly to the right of the quenching air inlet; and the extension direction of the quenching air delivery channel is perpendicular to the plane where the opening of the quenching air inlet is located.

9. The glass tempering production line using a convection air distribution structure according to claim 8, characterized in that: The glass tempering section is also provided with a first flap gate valve and a second flap gate valve; The first flap gate valve is installed in the first air duct, and the first flap gate valve is used to control the opening and closing of the first air duct; The second flap gate valve is installed in the second air duct, and the second flap gate valve is used to control the opening and closing of the second air duct.

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