CN116768460A - Glass tempering production line using convection air distribution structure - Google Patents

Abstract

The invention relates to glass tempering equipment and discloses a glass tempering production line using a convection air distribution structure, which also comprises a convection air conveying mechanism, wherein the convection air conveying mechanism comprises a convection air pipeline and a plurality of convection pipes; the convection air pipeline comprises a plurality of air pressure distribution boxes; a partition board along the horizontal direction is arranged in the wind pressure distribution box; the partition plate is provided with a plurality of first diversion holes; a plurality of convection tubes are arranged below each group of heating wires at intervals, and each convection tube comprises an inner tube and an outer tube which are sleeved inside and outside; the top of the inner tube is provided with a plurality of second diversion holes which are arranged at intervals along the length direction of the inner tube; the bottom of the outer tube is provided with a plurality of third diversion holes which are arranged at intervals along the length direction of the outer tube; the second diversion hole and the third diversion hole are respectively communicated with a wind pressure homogenization 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 air pressure homogenization, so that the consistency of the air pressure of the convection air can be improved, and the heating uniformity of the glass to be tempered in the heating furnace can be improved.

Description

Glass tempering production line using convection air distribution structure

Technical Field

The utility model relates to the technical field of glass tempering equipment, in particular to a glass tempering production line using a convection air distribution structure.

Background

The heating furnace in the prior art is provided with the convection air conveying pipeline, and the temperature distribution uniformity of the heating space between the heating wire and the surface of the glass to be tempered is adjusted through the convection air output by the convection air conveying pipeline, so that the heating uniformity of the glass to be tempered in the heating furnace is improved, and the defect that the surface of the glass to be tempered is generated due to uneven heating is avoided.

The Chinese patent publication No. CN114956534A discloses a high-efficiency energy-saving convection system of a glass heating furnace, which is provided with a plurality of heat exchangers for recovering heat of exhausted waste gas, occupies more space for air flow in the heating furnace, seriously influences the fluidity of convection wind in the furnace, and leads to poor uniformity of temperature distribution in the furnace.

The Chinese patent with the publication number of CN217077395U discloses a convection tube comprising an upper convection section and a lower convection section, wherein the upper convection section is distributed above a heating wire, the lower convection section is distributed below the heating wire, and simultaneously occupies the space above and below the heating wire, so that the structure is complex, more space for air flow in a heating furnace is occupied, the flowing effect of convection air in the heating furnace is influenced, and the uniformity of temperature distribution in the heating furnace is further influenced.

Disclosure of Invention

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

To achieve the purpose, the invention adopts the following technical scheme:

the glass tempering production line with the convection air distribution structure comprises a heating furnace positioned between an upper sheet table and a lower sheet table, wherein a plurality of groups of heating wires which are arranged at intervals are arranged in the heating furnace, and the glass tempering production line also comprises a convection air conveying mechanism, wherein the convection air conveying mechanism comprises a convection air pipeline and a plurality of convection pipes; the convection air pipeline comprises a plurality of air pressure distribution boxes;

a partition board along the horizontal direction is arranged in the wind pressure distribution box; the periphery of the partition plate is connected with the inner wall of the wind pressure distribution box; the partition plate is provided with a plurality of first diversion holes which are distributed at intervals and penetrate through the plate surface of the partition plate;

a plurality of convection tubes are arranged below each group of heating wires at intervals, and each convection tube comprises an inner tube and an outer tube which are sleeved inside and outside; the left end and the right end of the inner tube are exposed out of the left end and the right end of the outer tube, and the left end and the right end of the inner tube are respectively communicated with the output end of a convection fan outside the furnace through convection air pipelines; the top of the inner tube is provided with a plurality of second diversion holes which are arranged at intervals along the length direction of the inner tube, and the second diversion holes penetrate through the tube wall of the inner tube; the bottom of the outer tube is provided with a plurality of third diversion holes which are arranged at intervals along the length direction of the outer tube, and the third diversion holes penetrate through the tube wall of the outer tube; the cavity between the outer wall of the inner pipe and the inner wall of the outer pipe forms a wind pressure homogenizing cavity, and the second diversion hole and the third diversion hole are respectively communicated with the wind pressure homogenizing cavity; the third diversion hole faces downwards to the top surface of the glass to be tempered;

All convection pipes in the heating furnace are arranged at equal intervals along the front-back direction, and the center points of all third diversion holes are positioned on the same horizontal plane.

Further, the convection air pipeline also comprises two air supply pipes and a plurality of air inlet pipes;

the left and right sides above the heating furnace are respectively provided with the air supply pipes extending along the front and rear directions; the input end of the air supply pipe is communicated with the output end of the convection fan, and the top end of the air supply pipe is communicated with the output end of the air supply pipe;

the wind pressure distribution box comprises a box body; the hollow box body extends along the left-right direction, the strip-shaped partition plate is arranged in the box body, and the bottom end of the air inlet pipe is communicated with the top of the box body; the left end and the right end of the inner tube are respectively communicated with the bottoms of the two box bodies which are left and right separated;

the blast pipe, the air inlet pipe and the wind pressure distribution box which are communicated in sequence form the convection air pipeline.

Specifically, a plurality of third diversion holes near the bottom of the outer tube of the furnace door of the heating furnace are arranged in a straight line extending along the left-right direction, and a plurality of third diversion holes arranged in a straight line are positioned at one side of the bottom of the corresponding outer tube, which is towards the middle part of the heating furnace;

The plurality of third diversion holes which are positioned in the heating furnace and are not close to the bottom of the outer tube of the furnace door of the heating furnace are arranged into two straight lines extending along the left-right direction, and the two third diversion holes which are positioned on the same outer tube and are aligned and separated from each other are respectively positioned on the front side and the rear side of the bottom of the outer tube;

the central axes of the inner tube and the outer tube are in the same straight line, an included angle a between a connecting line between the central point of the third diversion hole and the central axis and a vertical plane where the central axis is located is an included angle a, and the included angle a is 30-45 degrees.

Further, the convection air conveying mechanism further comprises a connecting pipe, a sealing plate, a hanging frame and a regulating valve;

the wind pressure distribution box further comprises an output pipe;

the top end of the output pipe penetrates through the bottom of the box body and is communicated with the inner cavity of the box body, and the bottom end of the output pipe is a free end extending downwards;

the top of the connecting pipe is welded to the top surface of the box body, and the connecting pipe is sleeved on the periphery of the bottom end of the output pipe; the left end or the right end of the inner pipe is communicated with the side wall of the connecting pipe, and the top surface of the sealing plate is detachably propped against and seals the bottom end of the connecting pipe;

The suspension bracket comprises two suspension rods, two cross rods, a plurality of hooks and a plurality of bolts; the hook is a concave hook part, and the front end and the rear end of the hook face upwards and are provided with pin bolt holes;

the cross bars extend along the front-back direction, and two cross bars are left and right arranged on the top surfaces of a plurality of outer tubes of the same group at intervals;

the top ends of the two hanging rods which are separated front and back are respectively and detachably fixed on the top of the heating furnace, and the bottom ends of the hanging rods are detachably fixed on the cross rod;

the hook part of each hook is sleeved on the periphery of one outer tube from below, the two hooks which are aligned left and right are respectively propped against the left surface and the right surface of the cross rod, and the two pins respectively pass through the cross rod and the corresponding pin holes and fix the two hooks on the left surface and the right surface of the cross rod;

the air inlet pipe is connected with the air supply pipe through the air inlet pipe, and the air inlet pipe is connected with the air supply pipe through the air inlet pipe.

Further, the device also comprises a glass tempering section, wherein the glass tempering section 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 frame is provided with a plurality of tempering section driving rollers which are arranged at intervals from front to back, the plurality of tempering section driving rollers form a driving roller group and are driven by the same set of driving device, and the top surfaces of the plurality of tempering section driving rollers form a tempering conveying surface; the rear section of the toughened conveying surface is a quenching area;

the quenching fan and the cooling fan run at different times; the quenching fan outputs high-pressure quenching air to the quenching area; the cooling fan outputs low-pressure cooling air to the whole toughened conveying surface.

Further, 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 along the front-back direction, and the air grid assembly comprises an upper air grid assembly and a lower air grid assembly;

a plurality of tempering section driving rollers are arranged between the upper air grid assembly and the lower air grid assembly in an up-down aligned mode;

the right side surface of the upper air grid assembly and the right side surface of the lower air grid assembly are provided with a plurality of cold air input ports in a one-to-one correspondence manner;

the right side surface of the air collecting box is provided with a cooling air inlet and a quenching air inlet which are adjacent front and back, and the left side surface of the air collecting box is provided with a plurality of upper air outlets and a plurality of lower air outlets which are corresponding one by one up and down;

The gate valve is arranged on the air collecting box along the length direction perpendicular to the air collecting box, and the gate valve is positioned between the cooling air inlet and the quenching air inlet;

the cold air outlet of the cooling fan is communicated with the cooling air inlet, and the cold air outlet of the quenching fan is communicated with the quenching air inlet; the upper air outlet is communicated with a cold air inlet corresponding to the upper air grid assembly, and the lower air outlet is communicated with a cold air inlet corresponding to the lower air grid assembly;

the gate valve is opened and closed along with the start and stop of the cooling fan.

Specifically, the transmission device comprises a chain wheel transmission assembly and a driving motor;

the tempering section driving rollers extend in the left-right direction, the left ends of the tempering section driving rollers are respectively connected with the sprocket driving assembly in a driving way, and the driving motor drives the sprocket driving assembly.

Specifically, the cooling fan comprises a first motor, a first shell, a first air pipe and a first air guide cover;

the first motor is arranged in the first shell, the input end of the first air pipe is communicated with the air outlet of the first shell, the air outlet of the first shell is the cold air outlet, the output end of the first air pipe is communicated with the input end of the first air guide cover, and the output end of the first air guide cover is communicated with the cooling air inlet;

The first air pipe and the first air guide cover form a cooling air conveying channel;

the first shell is positioned at the right front of the cooling air inlet; the first wind scooper is in a horn shape which gradually expands along the wind flow direction;

the plane of the opening of the cooling air inlet is parallel to the extending direction of the air collecting box;

an included angle b in the horizontal direction between the central axis of the first air guide cover and the plane where the opening of the cooling air inlet is located is 40-45 degrees.

Specifically, the quenching fan comprises a second motor, a second shell, a second air pipe and a second air guide cover;

the second motor is arranged in the second shell, the input end of the second air pipe is communicated with the air outlet of the second shell, the output end of the second air pipe is communicated with the input end of the second air guide cover, and the output end of the second air guide cover is communicated with the quenching air inlet;

the second air pipe and the second air guide cover form a rapid cold air conveying channel;

the second shell is positioned right to the quenching wind inlet; the extending direction of the quenching wind conveying channel is perpendicular to the plane of the opening of the quenching wind inlet.

Further, 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 arranged in the first air pipe and is used for controlling the opening and closing of the first air pipe;

the second flap gate valve is arranged in the second air pipe and is used for controlling the opening and closing of the second air pipe.

According to the glass tempering production line with the convection air distribution structure, the convection air conveying mechanism comprises the wind pressure distribution box, the inner cavity of the wind pressure distribution box is provided with the partition plate, so that the wind pressure distribution box has a wind pressure distribution function on the input convection air, the convection air in the inner cavity of the wind pressure distribution box is homogenized and then is input into the convection pipe, and then the convection air is homogenized again in the wind pressure homogenizing cavity in the convection pipe, therefore, the glass tempering production line with the convection air distribution structure has a function of twice wind pressure homogenization on the convection air output from the third diversion holes, the consistency of the wind pressure of the convection air output from each third diversion hole can be effectively improved, the temperature distribution of the heating furnace and the wind pressure with uniform pressure distribution on the surface of glass to be tempered are improved, and the heating uniformity and the heat energy conversion rate of the glass to be tempered in the heating furnace are further improved.

Drawings

Fig. 1 is a schematic top view of a glass tempering line using a convection current distribution mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view showing the installation structure of a heating furnace and a convection air delivery mechanism of the glass tempering production line using a convection air distribution structure according to the present invention;

fig. 3 is a schematic structural view of part of a convection air conveying mechanism of an embodiment of the glass tempering production line using a convection air distribution mechanism according to the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

fig. 5 is a schematic view showing an internal structure of a distribution assembly of an embodiment of the glass tempering line using a convection air distribution mechanism according to the present invention;

fig. 6 is a schematic view showing an open structure of a distribution pipe near a door of the glass tempering line using a convection air distribution structure according to an embodiment of the present invention;

FIG. 7 is a schematic view showing an open structure of a distribution pipe not close to a furnace door of an embodiment of the glass tempering line using a convection air distribution structure according to the present invention;

fig. 8 is a schematic top view of a glass tempering section of the glass tempering production line using a convection air distribution mechanism according to the present invention;

FIG. 9 is a schematic cross-sectional view of the portion C-C of FIG. 8;

FIG. 10 is a schematic cross-sectional view of the portion B-B of FIG. 8;

wherein: a loading table 1; a heating furnace 2; a glass tempering section 3; a lower sheet table 4; a convection air conveying mechanism 5; a conveyor line 6;

a heating wire 21; a quench fan 31; a cooling fan 32; a wind collecting box 33; a tempering section driving roller 34; a damper assembly 35; a gate valve 36; a second flap gate valve 37; a first flap gate valve 38; a sprocket drive assembly 39; a drive motor 30;

an air supply duct 51; an air inlet pipe 52; a wind pressure distribution box 53; a convection tube 54; a connection pipe 55; a sealing plate 56; a hanger 57; a regulating valve 58; a tempered conveying section 61;

a tempered conveying surface 300; a quench zone 301; a first housing 311; a first air duct 312; a first wind scooper 313; a second casing 321; a second air duct 322; a second air guide cover 323; a blast inlet 331; a cooling air inlet 332; an upper air outlet 333; a lower air outlet 334; an upper air grille assembly 351; a lower louver assembly 352;

a case 531; a partition 532; an output pipe 533; an inner tube 541; an outer tube 542; boom 571; a cross bar 572; a hook 573; a first split hole 5321; a second diversion hole 5411; third split aperture 5421.

Detailed Description

The technical scheme of the invention is further described below by referring to fig. 1-10 and specific embodiments.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, so to speak, the two elements are communicated internally. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present invention.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

The glass tempering production line using a convection air distribution structure comprises a heating furnace 2 positioned between an upper sheet table 1 and a lower sheet table 4, wherein a plurality of groups of heating wires 21 which are arranged at intervals are arranged in the heating furnace 2, and the glass tempering production line also comprises a convection air conveying mechanism 5, wherein the convection air conveying mechanism 5 comprises a convection air pipeline and a plurality of convection pipes 54; the convection air pipeline comprises a plurality of air pressure distribution boxes 53;

a partition 532 is arranged in the wind pressure distribution box 53 along the horizontal direction; 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 splitting holes 5321, and the plurality of first splitting holes 5321 are arranged at intervals and penetrate through the plate surface of the partition 532;

a plurality of convection tubes 54 are arranged below each group of heating wires 21 at intervals, and each convection tube 54 comprises an inner tube 541 and an outer tube 542 sleeved inside and outside; the left and right ends of the inner tube 541 are exposed to the left and right ends of the outer tube 542, and the left and right ends of the inner tube 541 are respectively communicated with the output end of the convection fan outside the furnace through convection air pipelines; a plurality of second diversion holes 5411 are arranged at intervals along the length direction of the inner tube 541 at the top of the inner tube 541, and the second diversion holes 5411 penetrate through the wall of the inner tube 541; the bottom of the outer tube 542 is provided with a plurality of third flow distribution holes 5421 arranged at intervals along the length direction of the outer tube 542, and the third flow distribution holes 5421 penetrate through the wall of the outer tube 542; a cavity between the outer wall of the inner pipe 541 and the inner wall of the outer pipe 542 forms a wind pressure homogenizing chamber 540, and the second and third diversion holes 5411 and 5421 are respectively communicated with the wind pressure homogenizing chamber 540; the third diversion hole 5421 faces downwards towards the top surface of the glass to be tempered;

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

Fig. 1 is a layout view of a glass tempering line using a convection air distribution structure according to the present invention; fig. 2 is a schematic view showing the internal structure of the heating furnace 2 of the glass tempering line using the convection current wind distribution structure according to the present invention, in which the convection current pipe 54 is located below the heating wire 21.

As shown in fig. 2-7, in the glass tempering production line using a convection air distribution structure according to the present invention, the convection air conveying mechanism 5 includes a wind pressure distribution box 53, and a partition 532 is disposed in an inner cavity of the wind pressure distribution box 53, so that the wind pressure distribution box 53 has a wind pressure distribution function for the input convection air, the convection air in the inner cavity of the wind pressure distribution box 53 is homogenized and then is input to the convection pipe 54, and then the convection air is homogenized again in a wind pressure homogenizing cavity 540 in the convection pipe 54, so that the glass tempering production line using a convection air distribution structure according to the present invention has a function of twice wind pressure homogenization for the convection air output from the third diversion holes 5421, and can effectively improve the uniformity of the wind pressure of the convection air output from each third diversion hole 5421, thereby improving the temperature distribution of the heating furnace 2 and the wind pressure generated by the convection air on the surface of the glass to be tempered, and further improving the heating uniformity and the heat energy conversion rate of the glass to be tempered in the heating furnace 2.

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

Further, the convection air pipeline further comprises two air supply pipes 51 and a plurality of air supply pipes 52;

the left and right sides above the heating furnace 2 are respectively provided with the air supply pipes 51 extending along the front and rear directions; the input end of the air supply pipe 51 is communicated with the output end of the convection fan, and the top end of the air supply pipe 52 is communicated with the output end of the air supply pipe 51;

the wind pressure distribution box 53 comprises a box body 531; the hollow box 531 extends along the left-right direction, the strip-shaped partition 532 is installed in the box 531, and the bottom end of the air inlet pipe 52 is communicated with the top of the box 531; the left and right ends of the inner tube 541 are respectively communicated with the bottoms of the two cases 531 spaced left and right;

the blast pipe 51, the air inlet pipe 52 and the air pressure distribution box 53, which are sequentially communicated, form the convection air pipeline.

As shown in fig. 3 to 5, 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 supplied to the convection pipe 54 through a convection air pipe composed of the air supply pipe 51, the air supply pipe 52 and the air pressure distribution box 53.

Specifically, the plurality of third split holes 5421 near the bottom of the outer tube 542 of the oven door of the heating oven 2 are aligned in a straight line extending in the left-right direction, and the plurality of third split holes 5421 aligned in a straight line are located on the side of the corresponding bottom of the outer tube 542 toward the middle of the heating oven 2;

the plurality of third split holes 5421 located in the heating furnace 2 and not close to the bottom of the outer tube 542 of the furnace door of the heating furnace 2 are arranged in two straight lines extending in the left-right direction, and the two third split holes 5421 located in front-rear alignment of the same outer tube 542 are respectively located on the front-rear sides of the bottom of the outer tube 542;

the central axes of the inner tube 541 and the outer tube 542 are in the same straight line, and an included angle a between a connecting line between a central point of the third split hole 5421 and the central axis and a vertical plane where the central axis is located is 30 ° -45 °.

As shown in fig. 6, the third diverting holes 5421 near the bottom of the outer tube 542 of the oven door of the heating oven 2 are aligned and located at one side of the middle of the inward heating oven 2, so that it is possible to prevent the heat of the heating oven 2 from being discharged by the convection wind blown outward when the front oven door or the rear oven door is opened.

As shown in fig. 7, the plurality of third split holes 5421 of the bottom of the outer tube 542 which is not close to the door of the heating furnace 2 are arranged in two straight lines extending in the left-right direction, so that the convection wind outputted from the third split holes 5421 located at the front side of the bottom of the outer tube 542 collides with the convection wind outputted from the third split holes 5421 located at the rear side of the bottom of the other outer tube 542 in front to form turbulence, thereby further improving the uniformity of the temperature distribution in the heating furnace 2.

As shown in fig. 6 and 7, when the included angle a is 30 ° -45 °, convection wind outputted from two outer tubes 542 adjacent to each other in front and back can form turbulence which is sheared from each other and moves downward, and has a good effect on improving uniformity of temperature distribution in the heating furnace 2.

Further, the convection air conveying mechanism 5 further comprises a connecting pipe 55, a sealing plate 56, a hanging frame 57 and a regulating valve 58;

the wind pressure distribution box 53 further comprises an output pipe 533;

the top end of the output pipe 533 penetrates through the bottom of the box 531 to be communicated with the inner cavity of the box 531, and the bottom end of the output pipe 533 is a free end extending downwards;

the top of the connecting pipe 55 is welded to the top surface of the box 531, and the connecting pipe 55 is sleeved on the periphery of the bottom end of the output pipe 533; the left end or the right end of the inner tube 541 is communicated with the side wall of the connecting tube 55, and the top surface of the sealing plate 56 is detachably abutted against and sealed with the bottom end of the connecting tube 55;

The hanger 57 includes two hanger bars 571, two cross bars 572, a plurality of hooks 573, and a plurality of pins; the hook 573 is a concave hook part, and the front end and the rear end of the hook 573 face upwards and are provided with pin bolt holes;

the cross bars 572 extend in the front-rear direction, and two cross bars 572 are disposed at left-right intervals on top surfaces of the plurality of outer tubes 542 of the same group;

the top ends of two hanging rods 571 which are spaced front and back are respectively detachably fixed on the top of the heating furnace 2, and the bottom ends of the hanging rods 571 are detachably fixed on the cross rod 572;

the hook portion of each hook 573 is sleeved on the periphery of one outer tube 542 from below, two hooks 573 aligned left and right respectively prop against the left and right sides of the cross bar 572, and two pins respectively pass through the cross bar 572 and the corresponding pin holes and fix the two hooks 573 on the left and right sides of the cross bar 572;

the adjusting valve 58 is installed at the connection between the air inlet pipe 52 and the air supply pipe 51, and the adjusting valve 58 is used for adjusting the air pressure input into the air inlet pipe 52.

As shown in fig. 3 to 5, the bottom end of the connection pipe 55 is provided as a detachable sealing structure, which improves the convenience of operation for cleaning the residues in the wind pressure distribution box 53 and the residues in the convection pipe 54.

As shown in fig. 3, a group of convection tubes 54 are suspended and fixed by two hangers 7, and the installation stability of the convection tubes 54 can be ensured by only opening four suspension holes in the top of the heating furnace 2 for fixing the top ends of the four suspension rods 571, so that the installation can also avoid that too many suspension holes are opened in the top of the heating furnace 2 for suspending the convection tubes 54 one by one, thereby reducing the leakage of heat in the suspension holes.

As shown in fig. 2, the air pressure of the air inlet pipes 52 is regulated by the regulating valve 6, so that the air pressure of each air inlet pipe 52 is kept consistent, and the air pressure distribution uniformity of the input convection air can be ensured from the source.

Further, the glass tempering device also comprises a glass tempering section 3, wherein the glass tempering section 3 is arranged between the heating furnace 2 and the lower sheet table 4;

the glass tempering section 3 is provided with a quenching fan 31 and a cooling fan 32;

the glass tempering section 3 is provided with a plurality of tempering section driving rollers 34 which are arranged at intervals in the front-back direction, the plurality of tempering section driving rollers 34 form a driving roller group and are driven by the same set of driving device, and the top surfaces of the plurality of tempering section driving rollers 34 form a tempering conveying surface 300; the rear section of the tempering conveying surface 300 is a quenching area 301;

The quenching fan 31 and the cooling fan 32 are operated at a time; 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 tempered conveying surface 300.

When a group of glass to be tempered enters the heating furnace 2 in sequence through the upper sheet table 1, after being heated to a set temperature in the heating furnace 2, the glass to be tempered leaves the heating furnace 2 in sequence and enters the quenching area 301, the quenching fan 31 is started, the quenching fan 31 outputs high-pressure quenching air to the quenching area 301 to quench each piece of glass to be tempered passing through the quenching area 301 to be tempered, after the group of glass to be tempered passes through the quenching area 301 to be quenched, the group of glass to be tempered is covered with the tempering conveying surface 300, at the moment, the quenching fan 31 stops running, the cooling fan is started and outputs cooling air to the tempering conveying surface 300 to cool each piece of glass positioned on the tempering conveying surface 300 to 50-60 ℃, and then the cooling fan is output to the lower sheet table 4 to be cooled to room temperature, so as to finish the circulation operation of tempering treatment of the group of glass to be tempered.

In the glass tempering production line in the prior art, the pass-through section comprises a group of air grid assemblies and a section of conveying line matched with the air grid assemblies, the cooling section comprises another group of air grid assemblies and another section of conveying line matched with the air grid assemblies, and each section of conveying line is independently provided with a driving motor and a chain wheel transmission assembly.

The plurality of tempering section driving rollers 34 form a driving roller group and are driven by the same set of driving device, so that the parts of the production line can be simplified, and the manufacturing cost can be saved.

Further, the glass tempering section 3 is also provided with a wind collecting box 33, a wind grid assembly 35 and a gate valve 36;

the air collection box 33 extends in the front-rear direction, and the air grid assembly 35 includes an upper air grid assembly 351 and a lower air grid assembly 352;

a plurality of tempering section driving rollers 34 are arranged between the upper air grid assembly 351 and the lower air grid assembly 352 which are aligned up and down;

a plurality of cold air inlets are correspondingly arranged on the right side surface of the upper air grid assembly 351 and the right side surface of the lower air grid assembly 352 one by one;

the right side surface of the air collection box 33 is provided with a cooling air inlet 332 and a quenching air inlet 331 which are adjacent front and back, and the left side surface of the air collection box 33 is provided with a plurality of upper air outlets 333 and a plurality of lower air outlets 334 which are vertically corresponding one by one;

the gate valve 36 is mounted on the air collection box 33 along the length direction perpendicular to the air collection box 33, and the gate valve 36 is positioned between the cooling air inlet 332 and the quenching air inlet 331;

a cold air outlet of the cooling fan 32 is communicated with the cooling air inlet 332, and a cold air outlet of the quenching fan 31 is communicated with the quenching air inlet 331; the upper air outlet 333 is communicated with a cold air inlet corresponding to the upper air grid assembly 351, and the lower air outlet 334 is communicated with a cold air inlet corresponding to the lower air grid assembly 352;

The gate valve 36 is opened and closed in response to the start and stop of the cooling fan 32.

As shown in fig. 8-10, the gate valve 36 is opened and closed following the start and stop of the cooling fan 32, that is, when the cooling fan 31 is operated, the gate valve 36 is closed and separates the inner cavity of the air collection box 33 into front and rear sections, and the plurality of upper air outlets 333 and the plurality of lower air outlets 334 positioned at the front end of the air collection box 33 output high-pressure rapid cooling air from the up-down direction to the quenching area 301 through the up-down aligned upper air grid assembly 351 and lower air grid assembly 352 respectively.

Conversely, when the quench fan 31 is turned off and the cooling fan 32 is operated, the shutter valve 36 is opened, and all the upper air outlets 333 and the lower air outlets 334 that are in communication with the air collection box 33 output low-pressure cooling air to the tempered conveying surface 300 from the up-down direction through all the upper air grill assemblies 51 and all the lower air grill assemblies 52, respectively.

Specifically, the transmission device comprises a sprocket transmission assembly 39 and a driving motor 30;

the tempering section driving rollers 34 extend in the left-right direction, the left ends of a plurality of tempering section driving rollers 34 are respectively connected with the sprocket driving assembly 39 in a driving manner, and the driving motor 30 drives the sprocket driving assembly 39.

As shown in fig. 8 and 10, the sprocket driving assembly 39 is driven by the driving motor 30, and the plurality of tempering section driving rollers 34 which are one driving roller group are driven to synchronously rotate, so that the group of tempered glass is driven to reciprocate back and forth in the tempering conveying surface 300 to be cooled by cooling air, thereby cooling the surface temperature of the group of tempered glass to room temperature, further completing cooling and meeting the process requirements of quality control.

Specifically, the cooling fan 32 includes a first motor, a first housing 311, a first air duct 312, and a first air guiding cover 313;

the first motor is installed in the first casing 311, an input end of the first air pipe 312 is communicated with an air outlet of the first casing 311, the air outlet of the first casing 311 is the cold air outlet, an output end of the first air pipe 312 is communicated with an input end of the first air guiding cover 313, and an output end of the first air guiding cover 313 is communicated with the cooling air inlet 332;

the first air duct 312 and the first air guide cover 313 form a cooling air conveying channel;

the first housing 311 is positioned in front of the cooling air inlet 332; the first wind scooper 313 is in a horn shape that gradually expands along the wind flow direction;

The plane of the opening of the cooling air inlet 332 is parallel to the extending direction of the air collection box 33;

an included angle b in a horizontal direction between the central axis of the first wind scooper 313 and a plane where the opening of the cooling wind inlet 332 is located is 40 ° -45 °.

As shown in fig. 8 and 10, the cooling fan 32 of the present invention makes cooling air enter the cooling air inlet 332 along the oblique line direction by guiding the cooling air conveying channel, so that the phenomenon that the wind pressure is high in the middle of the wind collecting box 33 due to the fact that the air outlet of the cooling fan 32 is aligned with the cooling air inlet 332 can be avoided, and accordingly, the uniformity of wind pressure distribution of the cooling air in the wind collecting box 33 is improved, the uniformity of the cooling temperature of glass tempering is improved, and the quality of glass tempering is improved.

As shown in fig. 8 and 10, the included angle b is 40 ° -45 °, and the cooling air entering the air collection box 33 through the cooling air conveying channel has better air pressure distribution uniformity; especially, when the included angle a is 40 °, the uniformity of the wind pressure distribution of the cooling wind in the wind collecting box 33 of the present invention is in an optimal state.

Specifically, the quenching fan 31 includes a second motor, a second casing 321, a second air duct 322, and a second air guiding cover 323;

The second motor is installed in the second casing 321, an input end of the second air pipe 322 is communicated with an air outlet of the second casing 321, an output end of the second air pipe 322 is communicated with an input end of the second air guiding cover 323, and an output end of the second air guiding cover 323 is communicated with the quenching air inlet 331;

the second air duct 322 and the second air guide cover 323 form a rapid cooling air conveying channel;

the second casing 321 is located right of the quench wind inlet 331; the direction of extension of the quench wind transport channels is perpendicular to the plane of the opening of the quench wind inlet 331.

As shown in fig. 8 and 9, the wind pressure loss of the rapid cooling wind in the rapid cooling wind conveying channel can be reduced, the rapid cooling effect of the rapid cooling wind can be guaranteed to the maximum extent, and the glass tempering quality can be further ensured.

Further, the glass tempering section 3 is also provided with a first flap gate valve 38 and a second flap gate valve 37;

the first flap gate valve 38 is installed in the first air duct 312, and the first flap gate valve 38 is used for controlling the opening and closing of the first air duct 312;

the second flap gate valve 37 is installed in the second air duct 322, and the second flap gate valve 37 is used for controlling the opening and closing of the second air duct 322.

As shown in fig. 8 and 10, at the moment of starting the cooling fan 32, the first air pipe 312 is closed by the first flap gate valve 38, so that the phenomenon that the current of the cooling fan 32 is too high due to no load can be avoided, and then after the cooling fan 32 normally operates, the first flap gate valve 38 is opened and the conduction area of the first air pipe 312 is gradually increased, so that the service life of the cooling fan 32 can be prolonged.

As shown in fig. 8 and 9, when the cooling fan 32 is turned on and outputs cooling air after the quenching fan 31 stops operating, the second air duct 322 is closed by the second flap gate valve 37, so that the cooling air can be prevented from leaking through the quenching air conveying passage.

In summary, as shown in fig. 1-6, in the embodiment of the invention, the glass tempering production line using the convection air distribution structure, the convection air conveying mechanism 5 includes the wind pressure distribution box 53, the inner cavity of the wind pressure distribution box 53 is provided with the partition 532, so that the wind pressure distribution box 53 has a wind pressure distribution function on the input convection air, the convection air in the inner cavity of the wind pressure distribution box 53 is homogenized and then is input to the convection pipe 54, and then the convection air is homogenized again in the wind pressure homogenizing cavity 540 in the convection pipe 54, so that the glass tempering production line using the convection air distribution structure of the invention has a function of twice wind pressure homogenization on the convection air output from the third diversion holes 5421, and can effectively improve the uniformity of the wind pressure of the convection air output from each third diversion hole 5421, thereby improving the temperature distribution of the heating furnace 2 and the wind pressure of the convection air with uniform pressure distribution on the surface of the glass to be tempered, and further improving the heating uniformity and the heat energy conversion rate of the glass to be tempered in the heating furnace 2.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (10)

1. The glass tempering production line using the convection air distribution structure comprises a heating furnace positioned between an upper sheet table and a lower sheet table, wherein a plurality of groups of heating wires which are arranged at intervals are arranged in the heating furnace; the convection air pipeline comprises a plurality of air pressure distribution boxes;

a partition board along the horizontal direction is arranged in the wind pressure distribution box; the periphery of the partition plate is connected with the inner wall of the wind pressure distribution box; the partition plate is provided with a plurality of first diversion holes which are distributed at intervals and penetrate through the plate surface of the partition plate;

a plurality of convection tubes are arranged below each group of heating wires at intervals, and each convection tube comprises an inner tube and an outer tube which are sleeved inside and outside; the left end and the right end of the inner tube are exposed out of the left end and the right end of the outer tube, and the left end and the right end of the inner tube are respectively communicated with the output end of a convection fan outside the furnace through convection air pipelines; the top of the inner tube is provided with a plurality of second diversion holes which are arranged at intervals along the length direction of the inner tube, and the second diversion holes penetrate through the tube wall of the inner tube; the bottom of the outer tube is provided with a plurality of third diversion holes which are arranged at intervals along the length direction of the outer tube, and the third diversion holes penetrate through the tube wall of the outer tube; the cavity between the outer wall of the inner pipe and the inner wall of the outer pipe forms a wind pressure homogenizing cavity, and the second diversion hole and the third diversion hole are respectively communicated with the wind pressure homogenizing cavity; the third diversion hole faces downwards to the top surface of the glass to be tempered;

All convection pipes in the heating furnace are arranged at equal intervals along the front-back direction, and the center points of all third diversion holes are positioned on the same horizontal plane.

2. The glass tempering production line using a convection air distribution structure according to claim 1, wherein the convection air line further comprises two air supply pipes and a plurality of air supply pipes;

the left and right sides above the heating furnace are respectively provided with the air supply pipes extending along the front and rear directions; the input end of the air supply pipe is communicated with the output end of the convection fan, and the top end of the air supply pipe is communicated with the output end of the air supply pipe;

the wind pressure distribution box comprises a box body; the hollow box body extends along the left-right direction, the strip-shaped partition plate is arranged in the box body, and the bottom end of the air inlet pipe is communicated with the top of the box body; the left end and the right end of the inner tube are respectively communicated with the bottoms of the two box bodies which are left and right separated;

the blast pipe, the air inlet pipe and the wind pressure distribution box which are communicated in sequence form the convection air pipeline.

3. The glass tempering production line using a convection current wind distribution structure according to claim 2, wherein a plurality of the third diversion holes near the bottom of the outer tube of the door of the heating furnace are arranged in a straight line extending in the left-right direction, and a plurality of the third diversion holes arranged in a straight line are located at a side of the bottom of the corresponding outer tube toward the middle of the heating furnace;

The plurality of third diversion holes which are positioned in the heating furnace and are not close to the bottom of the outer tube of the furnace door of the heating furnace are arranged into two straight lines extending along the left-right direction, and the two third diversion holes which are positioned on the same outer tube and are aligned and separated from each other are respectively positioned on the front side and the rear side of the bottom of the outer tube;

the central axes of the inner tube and the outer tube are in the same straight line, an included angle a between a connecting line between the central point of the third diversion hole and the central axis and a vertical plane where the central axis is located is an included angle a, and the included angle a is 30-45 degrees.

4. The glass tempering production line using a convection air distribution structure according to claim 1, wherein the convection air delivery mechanism further comprises a connection pipe, a sealing plate, a hanging frame and a regulating valve;

the wind pressure distribution box further comprises an output pipe;

the top end of the output pipe penetrates through the bottom of the box body and is communicated with the inner cavity of the box body, and the bottom end of the output pipe is a free end extending downwards;

the top of the connecting pipe is welded to the top surface of the box body, and the connecting pipe is sleeved on the periphery of the bottom end of the output pipe; the left end or the right end of the inner pipe is communicated with the side wall of the connecting pipe, and the top surface of the sealing plate is detachably propped against and seals the bottom end of the connecting pipe;

The suspension bracket comprises two suspension rods, two cross rods, a plurality of hooks and a plurality of bolts; the hook is a concave hook part, and the front end and the rear end of the hook face upwards and are provided with pin bolt holes;

the cross bars extend along the front-back direction, and two cross bars are left and right arranged on the top surfaces of a plurality of outer tubes of the same group at intervals;

the top ends of the two hanging rods which are separated front and back are respectively and detachably fixed on the top of the heating furnace, and the bottom ends of the hanging rods are detachably fixed on the cross rod;

the hook part of each hook is sleeved on the periphery of one outer tube from below, the two hooks which are aligned left and right are respectively propped against the left surface and the right surface of the cross rod, and the two pins respectively pass through the cross rod and the corresponding pin holes and fix the two hooks on the left surface and the right surface of the cross rod;

the air inlet pipe is connected with the air supply pipe through the air inlet pipe, and the air inlet pipe is connected with the air supply pipe through the air inlet pipe.

5. The glass tempering production line using a convection current wind distribution structure according to claim 1, further comprising a glass tempering section provided 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 frame is provided with a plurality of tempering section driving rollers which are arranged at intervals from front to back, the plurality of tempering section driving rollers form a driving roller group and are driven by the same set of driving device, and the top surfaces of the plurality of tempering section driving rollers form a tempering conveying surface; the rear section of the toughened conveying surface is a quenching area;

the quenching fan and the cooling fan run at different times; the quenching fan outputs high-pressure quenching air to the quenching area; the cooling fan outputs low-pressure cooling air to the whole toughened conveying surface.

6. The glass tempering production line using a convection air distribution structure according to claim 5, wherein the glass tempering section is further provided with a wind collecting box, a wind grid assembly and a gate valve;

the air collecting box extends along the front-back direction, and the air grid assembly comprises an upper air grid assembly and a lower air grid assembly;

a plurality of tempering section driving rollers are arranged between the upper air grid assembly and the lower air grid assembly in an up-down aligned mode;

the right side surface of the upper air grid assembly and the right side surface of the lower air grid assembly are provided with a plurality of cold air input ports in a one-to-one correspondence manner;

The right side surface of the air collecting box is provided with a cooling air inlet and a quenching air inlet which are adjacent front and back, and the left side surface of the air collecting box is provided with a plurality of upper air outlets and a plurality of lower air outlets which are corresponding one by one up and down;

the gate valve is arranged on the air collecting box along the length direction perpendicular to the air collecting box, and the gate valve is positioned between the cooling air inlet and the quenching air inlet;

the cold air outlet of the cooling fan is communicated with the cooling air inlet, and the cold air outlet of the quenching fan is communicated with the quenching air inlet; the upper air outlet is communicated with a cold air inlet corresponding to the upper air grid assembly, and the lower air outlet is communicated with a cold air inlet corresponding to the lower air grid assembly;

the gate valve is opened and closed along with the start and stop of the cooling fan.

7. The glass tempering production line using a convection current wind distribution structure according to claim 1, wherein the transmission device comprises a sprocket transmission assembly and a driving motor;

the tempering section driving rollers extend in the left-right direction, the left ends of the tempering section driving rollers are respectively connected with the sprocket driving assembly in a driving way, and the driving motor drives the sprocket driving assembly.

8. The glass tempering production line using a convection air distribution structure according to claim 1, wherein the cooling fan comprises a first motor, a first cabinet, a first air duct, and a first air guide cover;

the first motor is arranged in the first shell, the input end of the first air pipe is communicated with the air outlet of the first shell, the air outlet of the first shell is the cold air outlet, the output end of the first air pipe is communicated with the input end of the first air guide cover, and the output end of the first air guide cover is communicated with the cooling air inlet;

the first air pipe and the first air guide cover form a cooling air conveying channel;

the first shell is positioned at the right front of the cooling air inlet; the first wind scooper is in a horn shape which gradually expands along the wind flow direction;

the plane of the opening of the cooling air inlet is parallel to the extending direction of the air collecting box;

an included angle b in the horizontal direction between the central axis of the first air guide cover and the plane where the opening of the cooling air inlet is located is 40-45 degrees.

9. The glass tempering production line using a convection air distribution structure according to claim 8, wherein the quenching fan comprises a second motor, a second casing, a second air duct, and a second air guide cover;

The second motor is arranged in the second shell, the input end of the second air pipe is communicated with the air outlet of the second shell, the output end of the second air pipe is communicated with the input end of the second air guide cover, and the output end of the second air guide cover is communicated with the quenching air inlet;

the second air pipe and the second air guide cover form a rapid cold air conveying channel;

the second shell is positioned right to the quenching wind inlet; the extending direction of the quenching wind conveying channel is perpendicular to the plane of the opening of the quenching wind inlet.

10. The glass tempering production line using a convection air distribution structure according to claim 9, wherein the glass tempering section is further provided with a first flap gate valve and a second flap gate valve;

the first flap gate valve is arranged in the first air pipe and is used for controlling the opening and closing of the first air pipe;

the second flap gate valve is arranged in the second air pipe and is used for controlling the opening and closing of the second air pipe.