Tempered glass cooling device and cooling method

Abstract

A toughened glass cooling device and a cooling method, comprising a conveying rack (10), an air grille (20) and an air supply pipe (30). The air grille (20) further includes a plurality of air guiding units (200) arranged in a dot matrix structure, and any two adjacent air guiding units (200) are in contact with each other. Each air guiding unit (200) is provided with more than one air nozzle (21), and an exhaust window (201) is provided on the air outlet side of each air guiding unit (200). The air guiding unit (200) is configured to evenly guide the air flow discharged from the air nozzle (21) to the exhaust window (201). After the cold air is blown out by the air nozzle (21) in the air guiding unit (200) and passes through the diffuser (23), the single-beam air flow can be evenly dispersed into an air flow beam with the same area as the exhaust window (201) to cool the surface of the glass plate (100), so as to evenly apply the cold air flow ejected from the air nozzle (21) to the surface of the glass plate (100).

Description

Technical Field

[0001] The present invention belongs to the technical field of glass processing, and specifically refers to a tempered glass cooling device and a cooling method. Background Art

[0002] Tempered glass is a kind of prestressed glass. To improve the strength of the glass, chemical or physical methods are usually used to form compressive stress on the glass surface. When the glass bears external force, the surface stress is offset first, thereby improving the bearing capacity and enhancing the wind pressure resistance, cold and heat resistance, impact resistance, etc. of the glass itself. Currently, the air-cooling method is commonly used to cool the glass surface, thereby forming compressive stress on the glass surface.

[0003] In order to improve the cooling effect of air on the glass surface, generally, the air from the air grille needs to blow vertically towards the glass surface. Since the nozzles on the air grille are distributed at intervals, the airflow blowing towards the glass surface shows a situation where the local wind pressure is sometimes large and sometimes small, resulting in uneven cooling, which will cause unevenly distributed stress on the glass surface and the formation of stress spots on the glass surface. Therefore, how to improve the uniformity of wind pressure on the glass surface has become an urgent problem to be solved. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the present invention creatively adopts a tempered glass cooling device and a cooling method to at least partially solve the problems raised in the above background art.

[0005] The technical solutions adopted are as follows: In the first aspect of the embodiments of the present invention, a tempered glass cooling device is proposed, including:

[0006] A conveying rack configured to carry and convey a glass plate;

[0007] An air grille including a first air grille and a second air grille distributed on the upper and lower sides of the glass plate;

[0008] An air supply pipe, the input end of the air supply pipe is connected to an external air supply device, the output end of the air supply pipe is communicated with the air grille, and is used to supply cold air to the air grille, so that the air grille can respectively export cold air to the glass plate from the upper and lower sides;

[0009] Wherein, the air grille further includes a plurality of air guiding units arranged in a dot matrix structure, and any two adjacent air guiding units are in contact with each other. Each air guiding unit is provided with more than one air nozzle, and an exhaust window is provided on the air outlet side of the air guiding unit. The air guiding unit is configured to evenly guide the airflow discharged from the air nozzle to the exhaust window.

[0010] Further, a wind guide plate is provided on the exhaust port side of the air nozzle. The wind guide plate is arranged in an inverted conical structure. The wind guide plate includes a first end connected to the port of the air nozzle and a second end connected to the exhaust window. The cross-section of the second end is larger than that of the first end;

[0011] A plurality of diffusers are fixedly arranged inside the wind guide plate. The diffusers are arranged to diffuse the air flow at the first end towards the second end.

[0012] Further, the distance between any two adjacent diffusers increases successively from the first end to the second end inside the wind guide plate.

[0013] Further, the diffuser includes:

[0014] A bracket, which is arranged parallel to the glass plate and fixed on the inner wall of the wind guide plate;

[0015] Diffusion plates, which are distributed in a matrix on the bracket;

[0016] Among them, the bracket is constructed in a wire mesh structure and is used to connect each diffusion plate, and a plurality of diffusion plates are constructed in a tower structure inside the air nozzle.

[0017] Furthermore, the diffusion plate is connected to the bracket in a rotatable or fixed manner, and the diffusion plate is constructed in a pyramid shape, impeller shape, sphere shape or cylinder shape.

[0018] Further, an air extraction window is also provided on the air outlet side of the air guide unit. Along the diffusion direction of the outer periphery of the center of the air guide unit, there is at least one group of the exhaust windows and an air extraction window surrounding the outside of the exhaust windows;

[0019] An air extraction pipe is further included. The input end of the air extraction pipe is arranged to communicate with the air extraction window, and the output end of the air extraction pipe is arranged to be connected to an external air extraction device.

[0020] Furthermore, the plane where the air extraction window is located is closer to the glass plate than the plane where the exhaust window is located.

[0021] Further, the conveying rack includes:

[0022] A driving shaft, which is arranged to be connected to an external power device and can be driven to rotate by the power device;

[0023] Mounting frames, which are symmetrically fixed on both sides of the driving shaft along the axis of the driving shaft, and multiple groups are arranged at equal distances along the axis direction of the driving shaft;

[0024] Support columns, which are arranged to be rotatably installed inside the mounting frames;

[0025] Wherein, the support column has a first end for supporting the glass plate and a second end for keeping the first end always facing upward. When the drive shaft rotates to any angle, at least one of the support columns on the symmetrically distributed two mounting brackets always contacts the glass plate, and when the connection line of the two support columns is parallel to the glass plate, the conveying frame is in the first position, and when the connection line of the two support columns is perpendicular to the glass plate, the conveying frame is in the second position.

[0026] Furthermore, the center of gravity of the support column is close to the second end, so that the first end is always above the second end.

[0027] A second aspect of the embodiments of the present invention provides a method for cooling tempered glass, using the above-mentioned tempered glass cooling device, including the following steps:

[0028] Step 1, glass conveying: Transmit the glass plate heated to the tempering temperature above the conveying frame, and the conveying frame conveys the glass plate to the inside of the air grille;

[0029] Step 2, cooling treatment: Blow cold air from the air grille to the upper and lower surfaces of the glass plate, and perform rapid treatment and cooling treatment on the glass plate in sequence;

[0030] In step 2, the conveying frame supports the glass plate in the second position, and while multiple air guiding units blow cold air to the surface of the glass plate, the airflow rebounding from the surface of the glass plate can be inhaled to reduce the horizontal diffusion range of the airflow on the surface of the glass plate.

[0031] The beneficial effects achieved by the present invention with the above structure are as follows:

[0032] (1) The air grille includes a number of air guiding units arranged in a dot matrix structure. After the air nozzles in the air guiding units blow out cold air and pass through the diffuser, a single beam of airflow can be evenly dispersed into an airflow beam with the same area as the exhaust window area to cool the surface of the glass plate, realizing the uniform action of the cold air flow ejected from the air nozzles on the surface of the glass plate.

[0033] (2) The cold air is directly and evenly applied to the surface of the glass plate by the closely arranged air guiding units, and there is no problem of high air pressure in the area of the air nozzles and low air pressure in the area between the air nozzles. The airflow ejected from the air nozzles can act on the surface of the glass plate uniformly, further weakening the appearance of stress spots after the glass is formed. Description of the Drawings

[0034] Figure 1 It is a three-dimensional structural schematic diagram of the tempered glass cooling device proposed by the embodiments of the present invention;

[0035] Figure 2Schematic three-dimensional structure diagram of the air guiding unit proposed in the embodiment of the present invention;

[0036] Figure 3 Schematic structure diagram of the air inlet / outlet side of the air guiding unit proposed in the embodiment of the present invention;

[0037] Figure 4 Schematic internal structure diagram of the air guiding unit proposed in the embodiment of the present invention;

[0038] Figure 5 Partial enlarged structure diagram of the conveying rack in the horizontal state proposed in the embodiment of the present invention;

[0039] Figure 6 Partial enlarged structure diagram of the conveying rack in the vertical state proposed in the embodiment of the present invention;

[0040] Figure 7 a is a schematic structure diagram of the conveying rack in the conveying state when rotated to the first angle proposed in the embodiment of the present invention;

[0041] Figure 7 b is a schematic structure diagram of the conveying rack in the conveying state when rotated to the second angle proposed in the embodiment of the present invention;

[0042] Figure 7 c is a schematic structure diagram of the conveying rack in the conveying state when rotated to the third angle proposed in the embodiment of the present invention;

[0043] Figure 7 d is a schematic structure diagram of the conveying rack in the conveying state when rotated to the fourth angle proposed in the embodiment of the present invention.

[0044] Wherein, 100, glass plate; 10, conveying rack; 11, drive shaft; 12, mounting rack; 121, movable slot; 13, support column; 131, contact part; 132, rotating shaft; 133, counterweight part; 20, air grille; 200, air guiding unit; 201, exhaust window; 202, air extraction window; 20a, first air grille; 20b, second air grille; 21, air nozzle; 22, air guiding plate; 23, diffuser; 231, bracket; 232, diffuser plate; 30, air supply pipe; 40, air extraction pipe.

[0045] The accompanying drawings are used to provide a further understanding of the embodiments, and constitute a part of the specification. They are used together with the present embodiments for explanation and do not constitute a limitation to the embodiments. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection.

[0047] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments.

[0048] In order to obtain more air volume in the direction perpendicular to the glass surface, the air nozzles of the general air grille are arranged compactly, but the coverage range of the air nozzles is limited. The area covered by the air nozzles shows a large air pressure, while the area between the air nozzles shows a small air pressure. Moreover, the air flow on the side with a large air pressure will flow towards the side with a small air pressure after contacting the glass, resulting in a poor cooling effect in the area with a small air pressure and uneven cooling. Therefore, in the first aspect of the embodiments of the present invention, a tempered glass cooling device is provided, aiming to solve the problem of uneven cooling of the glass surface caused by uneven air pressure formed by the distribution of the air nozzles of the air grille. The device mainly includes a conveying rack 10, an air grille 20, and an air supply pipe 30.

[0049] As Figure 1 shown, the conveying rack 10 is arranged to carry and convey the glass plate 100. The air grille 20 includes a first air grille 20a and a second air grille 20b distributed on the upper and lower sides of the glass plate 100. The input end of the air supply pipe 30 is connected to an external air supply device, and the output end of the air supply pipe 30 is communicated with the air grille 20 and is used to supply cold air to the air grille 20, so that the first air grille 20a and the second air grille 20b can respectively lead out cold air from the upper and lower sides to the glass plate 100 to cool the upper and lower sides of the glass plate 100.

[0050] Furthermore, in order to enable the cold air flow led out from the air grille 20 to be evenly guided to the surface of the glass plate 100, the air grille 20 further includes a plurality of air guiding units 200 arranged in a dot matrix structure, and any two adjacent air guiding units 200 are in contact with each other. Each air guiding unit 200 is provided with more than one air nozzle 21, and an exhaust window 201 is provided on the air outlet side of the air guiding unit 200. The air guiding unit 200 is arranged to evenly guide the air flow discharged from the air nozzle 21 to the exhaust window 201.

[0051] As Figure 2As shown, in some embodiments, the cross-section of the air guiding unit 200 is set to be rectangular, so that the air guiding units 200 can be arranged compactly. Optionally, the cross-sectional shape of the air guiding unit 200 can also be set to be a regular hexagon, a square, an equilateral triangle, etc.

[0052] As Figure 4 shown, a wind guiding plate 22 is provided on the exhaust port side of the wind nozzle 21.

[0053] In some embodiments, in order to make the cold air flow discharged from the wind nozzle 21 completely cover the exhaust window 201, the wind guiding plate 22 is set to be an inverted conical structure. The wind guiding plate 22 includes a first end connected to the port of the wind nozzle 21 and a second end connected to the exhaust window 201, and the cross-section of the second end is larger than that of the first end, so that the air flow can diffuse to a larger range to improve the action range of the cold air discharged from the wind nozzle 21.

[0054] Furthermore, in order to make the cold air flow discharged from the wind nozzle 21 evenly guided to the exhaust window 201, a plurality of diffusers 23 are fixedly provided on the inner side of the wind guiding plate 22. The diffusers 23 are configured to diffuse the air flow at the first end to the second end. At the same time, in order to make the air flow inside the wind guiding plate 22 gradually diffuse to a larger range during the process of flowing from the first end (near the wind nozzle 21) to the second end (near the exhaust window 201), the distance between any two adjacent diffusers 23 increases in sequence from the first end to the second end inside the wind guiding plate 22. In this way, during the process of the cold air flow flowing from the first end to the second end, it will collide with the diffusers 23 and then evenly diffuse around, so that the action area of the cold air flow also gradually becomes larger after colliding with the diffusers 23 until it is the same as the area of the exhaust window 201.

[0055] In some embodiments, the diffuser 23 includes a bracket 231 and a diffusing plate 232.

[0056] Among them, the bracket 231 is arranged parallel to the glass plate 100 and fixed on the inner wall of the wind guiding plate 22, and the diffusing plates 232 are distributed in a matrix on the bracket 231.

[0057] Furthermore, the bracket 231 is configured as a wire mesh structure and is used to connect each diffusing plate 232, and a plurality of diffusing plates 232 are configured as a tower-shaped structure inside the wind nozzle 21. In this way, the cold air flow can pass through the bracket 231, diffuse around after colliding with the diffusing plates 232, and successively collide with the diffusing plates 232 distributed layer by layer during the process of approaching the exhaust window 201. Finally, the single beam of air flow ejected from the wind nozzle 21 is evenly dispersed into an air flow beam with the same area as the exhaust window 201.

[0058] Further, in order to improve the dispersion effect of the diffuser plate 232 on the air flow bundle and ensure uniform dispersion of the air flow bundle, the diffuser plate 232 is connected to the bracket 231 in a rotatable or fixed manner, and the diffuser plate 232 is configured as a pyramid, an impeller body, a sphere or a cylinder; among them, the pyramid and the impeller body can be installed in a rotatable manner, while the sphere and the cylinder can be installed in a fixed manner, and the distribution distance of the pyramid and the impeller body installed in a rotatable manner can be larger, and the distribution distance of the sphere and the cylinder installed in a fixed manner should be smaller to improve the dispersion effect on the air flow.

[0059] In this way, the cold air flow ejected from the air nozzle 21 can be evenly applied to the surface of the glass plate 100, and there is no problem that the air pressure is high in the area of the air nozzle 21 and the air pressure is low in the area between the air nozzles 21. The air flow ejected from the air nozzle 21 can act on the surface of the glass plate 100 uniformly, thereby further reducing the occurrence of stress marks after the glass is formed.

[0060] As Figure 2 and Figure 3 shown, in order to reduce the diffusion of the cold air flow to the surroundings after reaching the surface of the glass plate 100 and affect the subsequent contact between the cold air and the glass plate 100, an air extraction window 202 is further provided on the air outlet side of the air guiding unit 200. Along the diffusion direction from the center to the outer periphery of the air guiding unit 200, it includes at least one set of exhaust windows 201 and the air extraction window 202 surrounding the outside of the exhaust windows 201.

[0061] Further, the device further includes an air extraction pipe 40. The input end of the air extraction pipe 40 is arranged to communicate with the air extraction window 202, and the output end of the air extraction pipe 40 is arranged to be connected to an external air extraction device.

[0062] In this way, during operation, the air supply device (such as an air compressor) supplies cold air to the air grille 20 through the air supply pipe 30. The plurality of air guiding units 200 distributed on the upper and lower sides of the glass plate 100 blow cold air from the upper and lower sides of the glass plate 100 to cool the surface of the glass plate 100. When the air flow reaches the surface of the glass plate 100 and exchanges heat with the glass plate 100, it will be extracted by the air extraction window 202 to reduce the diffusion of the cold air after heat exchange to the surroundings and affect the subsequent contact and heat exchange between the cold air and the glass plate 100.

[0063] Further, in order to reduce the direct extraction of unheated cold air by the air extraction window 202, the plane where the air extraction window 202 is located is closer to the glass plate 100 than the plane where the exhaust window 201 is located. In this way, the cold air discharged from the exhaust window 201 will flow along the protruding exhaust window 201 and is not easily sucked by the air extraction window 202 before contacting the glass plate 100, while when the cold air contacts the glass plate 100, it is more easily sucked by the air extraction window 202 during the diffusion process to the surroundings.

[0064] Since the current conveyance of the 100-length glass plate adopts roller conveyance, and the area of the rollers is large, during the upward blowing process of the air grille 20 on the lower side, it will be affected by the rollers, resulting in inconsistent wind pressure and cooling effect in this part of the area. Therefore, the conveying components of the glass plate 100 are improved to reduce the influence on the cold air.

[0065] As Figure 1 、 Figure 5 and Figure 6 shown, the conveying frame 10 includes a driving shaft 11, a mounting frame 12 and a support column 13.

[0066] Among them, the driving shaft 11 is arranged to be connected to an external power device and can be driven to rotate by the power device. The mounting frames 12 are symmetrically fixed on both sides of the driving shaft 11 along the axis of the driving shaft 11, and multiple groups are arranged at equal distances along the axis direction of the driving shaft 11. The support columns 13 are arranged to be rotatably mounted inside the mounting frames 12.

[0067] During operation, the driving shaft 11 is driven to rotate by an external power device (the motor drives with gears or a transmission belt), and drives the mounting frames 12 on both sides to rotate around the axis of the driving shaft 11. During the rotation process, as Figure 7 a, 7b, 7c and 7d shown, the two support columns 13 alternately support the glass plate 100 to move forward, realizing the conveying process of the glass plate 100.

[0068] Furthermore, the support column 13 has a first end for supporting the glass plate 100 and a second end for keeping the first end always facing upward, so that when the driving shaft 11 rotates to any angle, at least one first end of the support columns 13 on the symmetrically distributed two mounting frames 12 is always in contact with the glass plate 100. Among them, the center of gravity of the support column 13 is close to the second end, so that the first end is always above the second end.

[0069] Even further, the support column 13 includes a contact portion 131, a rotating shaft 132 and a counterweight portion 133. Among them, the end of the contact portion 131 is a round head structure, made of a stainless steel core wrapped with aramid rope, having high heat resistance, and can protect the glass plate 100 without scratching the glass plate 100. The rotating shaft 132 is rotatably mounted in a "U"-shaped movable groove 121 formed inside the mounting frame 12. The length of the counterweight portion 133 is relatively long, so that the counterweight portion 133 always faces downward and the contact portion 131 always faces upward. In this way, when the two support columns 13 move alternately, it can also ensure that the contact portion 131 is always in contact with the glass plate 100.

[0070] In some embodiments, as Figure 5 and Figure 7As shown in Fig. a, when the line connecting the two support columns 13 is parallel to the glass plate 100, the conveying frame 10 is in the first position. At this time, the mounting frame 12 is parallel to the glass plate 100. When the cold air from the lower side blows vertically towards the glass plate 100, it will pass through the mounting frame 12. Although it can also reduce the obstruction to the air flow relative to the conveying rollers, there is still some obstruction. For example, Figure 6 and Figure 7 As shown in Fig. c, when the line connecting the two support columns 13 is perpendicular to the glass plate 100, the conveying frame 10 is in the second position. At this time, the mounting frame 12 is perpendicular to the glass plate 100. When the cold air from the lower side blows vertically towards the glass plate 100, it will pass through the overlapping mounting frames 12. Compared with the mounting frame 12 in the horizontal position, the obstruction to the cold air can be further reduced, and the influence on the cold air can be ignored.

[0071] In the second aspect of the embodiment of the present invention, a method for cooling tempered glass is provided. Using the above-mentioned tempered glass cooling device, it includes the following steps:

[0072] Step 1: Glass conveying: The glass plate 100 heated to the tempering temperature is transferred above the conveying frame 10, and the conveying frame 10 conveys the glass plate 100 to the inside of the air grid 20. During the conveying process, the driving shaft 11 is driven to rotate by an external power device (the motor drives with gears or belts). During the rotation of the driving shaft 11, the mounting frames 12 on both sides are driven to rotate around the axis of the driving shaft 11. As shown in Figure 7 Figs. a, b, c and d, the two support columns 13 alternately support the glass plate 100 to move forward to realize the conveying process of the glass plate 100. And when the glass plate 100 is conveyed in place, the conveying frame 10 is in the second position. At this time, the mounting frame 12 is perpendicular to the glass plate 100. When the cold air from the lower side blows vertically towards the glass plate 100, it will pass through the overlapping mounting frames 12. Compared with the mounting frame 12 in the horizontal position, the obstruction to the cold air can be further reduced, and the influence on the cold air can be ignored.

[0073] Step 2, Cooling treatment: Cold air is blown from the air grille 20 to the upper and lower surfaces of the glass plate 100, and the glass plate 100 is subjected to rapid treatment and cooling treatment in sequence. During the cooling process of the glass plate 100, a cold air gas is provided to the air grille 20 by a air supply device (such as an air compressor) through an air supply pipe 30. A plurality of air guiding units 200 distributed on the upper and lower sides of the glass plate 100 blow cold air to the glass plate 100 from the upper and lower sides of the glass plate 100 respectively. After the cold air is blown out from the air nozzle 21, it flows from the first end to the second end inside the air guiding plate 22, passes through the support 231 during the flowing process, diffuses around after colliding with the diffusion plate 232, and successively collides with the diffusion plates 232 distributed layer by layer during the process of approaching the exhaust window 201. Finally, the single beam of air flow ejected from the air nozzle 21 is uniformly dispersed into an air flow beam with the same area as the exhaust window 201 to cool the surface of the glass plate 100. In this way, the cold air flow ejected from the air nozzle 21 is uniformly applied to the surface of the glass plate 100, and there is no problem that the air pressure is strong in the area of the air nozzle 21 and the air pressure is small in the area between the air nozzles 21. The air flow ejected from the air nozzle 21 can act on the surface of the glass plate 100 uniformly, so as to further weaken the appearance of stress spots after the glass is formed; when the air flow reaches the surface of the glass plate 100 and exchanges heat with the glass plate 100, it will be sucked away by the air extraction window 202 to reduce the diffusion of the cold air after heat exchange around and affect the subsequent heat exchange between the cold air and the glass plate 100, and the horizontal diffusion range of the air flow on the surface of the glass plate 100 can be reduced.

[0074] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0075] Although the embodiments have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit. The scope of this embodiment is defined by the appended claims and their equivalents.

[0076] The above describes the implementation manners, and this description is not restrictive. What is shown in the drawings is only one of the implementation manners, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose, they shall fall within the protection scope.

Claims

1. A toughened glass cooling device, characterized in that, Comprising: A conveying rack (10) configured to carry and convey a glass plate (100); An air grille (20) including a first air grille (20a) and a second air grille (20b) respectively arranged on the upper side and the lower side of the glass plate (100); An air supply pipe (30) whose input end is connected to an external air supply device, and the output end of the air supply pipe (30) is communicated with the air grille (20) and is used to supply cold air to the air grille (20) so that the air grille (20) can respectively discharge cold air from the upper and lower sides to the glass plate (100); An air extraction pipe (40); Wherein, the air grille (20) further includes a plurality of air guiding units (200) arranged in a dot matrix structure, and any two adjacent air guiding units (200) are in contact with each other. Each air guiding unit (200) is provided with more than one air nozzle (21), and an exhaust window (201) is provided on the air outlet side of each air guiding unit (200). The air guiding unit (200) is configured to uniformly guide the air flow discharged from the air nozzle (21) to the exhaust window (201); A wind guiding plate (22) is provided on the exhaust port side of the air nozzle (21). A plurality of diffusers (23) are fixedly provided on the inner side of the wind guiding plate (22). The diffuser (23) includes a bracket (231) and a diffusing plate (232). The bracket (231) is constructed in a wire mesh structure and is used to connect each diffusing plate (232), and a plurality of diffusing plates (232) are constructed in a tower structure on the inner side of the air nozzle (21); An air extraction window (202) is further provided on the air outlet side of the air guiding unit (200). The input end of the air extraction pipe (40) is arranged to be communicated with the air extraction window (202), and the output end of the air extraction pipe (40) is arranged to be connected to an external air extraction device. The plane where the air extraction window (202) is located is closer to the glass plate (100) than the plane where the exhaust window (201) is located.

2. The toughened glass cooling device according to claim 1, wherein: The wind guiding plate (22) is arranged in an inverted conical structure. The wind guiding plate (22) includes a first end connected to the port of the air nozzle (21) and a second end connected to the exhaust window (201). The cross section of the second end is larger than that of the first end. The diffuser (23) is arranged to diffuse the air flow at the first end to the second end.

3. The toughened glass cooling device according to claim 1, characterized in that: The distance between any two adjacent diffusers (23) increases sequentially from the first end to the second end within the wind guiding plate (22).

4. The toughened glass cooling device according to claim 1, characterized in that: The bracket (231) is arranged parallel to the glass plate (100) and fixed on the inner wall of the wind guiding plate (22), and the diffusing plates (232) are distributed in a matrix on the bracket (231).

5. The toughened glass cooling device according to claim 4, characterized in that: The diffusing plate (232) is connected to the bracket (231) in a rotatable or fixed manner, and the diffusing plate (232) is constructed in a pyramid shape, an impeller shape, a spherical shape or a cylindrical shape.

6. The toughened glass cooling device according to any one of claims 1, characterized in that: Along the outer peripheral diffusion direction of the center of the air guiding unit (200), at least one group of the exhaust windows (201) and the air extraction windows (202) surrounding the outside of the exhaust windows (201) are included.

7. The toughened glass cooling device according to claim 1, characterized in that: The conveying rack (10) includes: A drive shaft (11) is provided to be connected to an external power device and can be driven to rotate by the power device; Mounting brackets (12) are fixedly arranged symmetrically on both sides of the drive shaft (11) along the axis of the drive shaft (11), and multiple groups are arranged at equal distances along the axial direction of the drive shaft (11); Support columns (13) are provided to be rotatably mounted inside the mounting brackets (12); Wherein, the support column (13) has a first end for supporting the glass plate (100) and a second end for keeping the first end always facing upward, so that when the drive shaft (11) rotates to any angle, at least one of the first ends of the support columns (13) on the two symmetrically distributed mounting brackets (12) is always in contact with the glass plate (100), and when the connection line of the two support columns (13) is parallel to the glass plate (100), the conveying frame (10) is in the first position, and when the connection line of the two support columns (13) is perpendicular to the glass plate (100), the conveying frame (10) is in the second position.

8. The toughened glass cooling device according to claim 7, characterized in that: The center of gravity of the support column (13) is close to the second end, so that the first end is always above the second end.

9. A method for cooling tempered glass, using the tempered glass cooling device described in any one of claims 1-8, characterized in that, Including the following steps: Step 1, glass conveying: The glass plate (100) heated to the tempering temperature is transported above the conveying frame (10), and the conveying frame (10) transports the glass plate (100) to the inside of the air grille (20); Step 2, cooling treatment: Cold air is blown out from the upper and lower surfaces of the glass plate (100) by the air grille (20) to perform rapid treatment and cooling treatment on the glass plate (100) in sequence; In Step 2, the conveying frame (10) supports the glass plate (100) in the second position, and while multiple air guiding units (200) blow cold air to the surface of the glass plate (100), they can inhale the airflow rebounding from the surface of the glass plate (100) to reduce the horizontal diffusion range of the airflow on the surface of the glass plate (100).

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