CN118495796B - A non-uniformly spaced cooling air grille - Google Patents
A non-uniformly spaced cooling air grille Download PDFInfo
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- CN118495796B CN118495796B CN202410970965.7A CN202410970965A CN118495796B CN 118495796 B CN118495796 B CN 118495796B CN 202410970965 A CN202410970965 A CN 202410970965A CN 118495796 B CN118495796 B CN 118495796B
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- glass
- cooling air
- conveying
- conveying roller
- spacing
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- 238000001816 cooling Methods 0.000 title claims abstract description 81
- 239000011521 glass Substances 0.000 claims abstract description 86
- 238000007664 blowing Methods 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000005341 toughened glass Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005496 tempering Methods 0.000 description 15
- 238000007599 discharging Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000001788 irregular Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/044—Tempering or quenching glass products using gas for flat or bent glass sheets being in a horizontal position
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
一种非等间距冷却风栅，涉及钢化玻璃生产设备，在输送辊道输送方向上具有多个冷却风区，每个冷却风区的吹风嘴具有相同的风压，在衔接玻璃加热炉的一个冷却风区中，输送辊道采用非等间距排布，靠近输送辊道输出方向的一端具有比另一端更大的辊间距，吹风嘴同样采用非等间距的排布，靠近输送辊道输出方向一端的吹风嘴与靠近输入方向一端的吹风嘴相比具有相同的风压以及更大的分布间距，在玻璃输送方向上形成不同的气流密度分布。在满足玻璃出炉需求的同时，增大后续吹风嘴的间距，提高热风排出效率。既不影响玻璃在输送方向上的冷却均匀性，又降低了玻璃宽度方向上中部和边缘的冷却速度差异，提高了玻璃的质量。
A non-uniformly spaced cooling air grid relates to a tempered glass production device, which has multiple cooling air zones in the conveying direction of the conveying roller, and the blowing nozzles in each cooling air zone have the same wind pressure. In a cooling air zone connected to a glass heating furnace, the conveying rollers are arranged in non-uniform spacing, and the roller spacing at one end close to the output direction of the conveying rollers is larger than that at the other end. The blowing nozzles are also arranged in non-uniform spacing, and the blowing nozzles at one end close to the output direction of the conveying rollers have the same wind pressure and a larger distribution spacing compared with the blowing nozzles at one end close to the input direction, forming different air flow density distributions in the glass conveying direction. While meeting the demand for glass to be discharged from the furnace, the spacing between subsequent blowing nozzles is increased to improve the hot air discharge efficiency. It does not affect the cooling uniformity of the glass in the conveying direction, and reduces the difference in cooling speed between the middle and the edge in the width direction of the glass, thereby improving the quality of the glass.
Description
Technical Field
The invention relates to toughened glass production equipment, in particular to a non-equidistant cooling air grid of glass toughening equipment.
Background
The cooling air grid in the glass tempering unit is used for tempering, semi-tempering and cooling the heated glass, and for the reciprocating glass tempering unit, the glass swings back and forth when tempering is completed in the cooling air grid, and in order to ensure uniform cooling of the glass, the cooling air grid air nozzle spacing and the roller spacing are uniformly distributed. For glass tempering units applied to special occasions, glass moves from the equipment inlet end to the glass outlet end in a unidirectional manner in the process of tempering glass, the glass does not reciprocate, and each group of air nozzles blows air to the glass in a full-scale single time.
In the glass tempering machine set in the current market, the distance between cooling air nozzles is generally set according to wind pressure, wind quantity, glass temperature and other factors, and the glass tempering process generally needs to gradually cool the heated glass according to different cooling rates. For this reason, the cooling section of the glass tempering unit is generally divided into a plurality of cooling air areas with different wind pressures, and in the same cooling air area with a certain wind pressure, the cooling air grids all adopt a structure with uniformly distributed roller spacing and air nozzle spacing, so as to maintain the uniformity of the cooling temperature of the glass in one section. Due to the requirements of glass tempering technology, a certain time is needed to finish quick cooling after the glass leaves the heating furnace, and a sufficient length is needed for a cooling air area of an air grid for finishing quick cooling. Under the condition that glass produced by a glass tempering unit is increasingly thinner, the roller spacing needs to be compressed to be small to meet the discharging requirement of the glass, and meanwhile, due to the arrangement mode of the equal roller spacing, a conveying roller way in a long section of cooling air area connected with a heating furnace adopts a smaller roller spacing, such as CN208327809U, CN203683362U. Because the air nozzles are arranged at the positions between the adjacent conveying rollers, the space between the air nozzles is correspondingly reduced because the space between the rollers is small, high-pressure air blown from the air nozzles to the glass after the glass completely enters the cooling air grid from the heating furnace has insufficient air exhaust space, hot air after heat exchange with the glass cannot be timely discharged to the outside, the cooling and heat dissipation speed of the surface of the glass, particularly the middle part of the glass is seriously influenced, the layout deformation caused by uneven cooling of the glass is caused, and meanwhile, a large amount of energy loss is caused by unsmooth air exhaust.
Disclosure of Invention
The invention aims to solve the technical problems of improving the hot air discharge efficiency of a cooling air grid cooling section after discharging glass, reducing the uneven cooling condition of the middle part and the edge of the glass and providing a non-equidistant cooling air grid.
The invention aims to solve the technical problems, and adopts the technical scheme that the non-equidistant cooling air grid comprises air grid groups arranged above and below a glass conveying roller way, a plurality of air blowing nozzles facing the conveying roller way are distributed in the air grid groups at intervals along the conveying direction of the conveying roller way, the air grid groups are provided with a plurality of cooling air areas in the conveying direction of the conveying roller way, the air blowing nozzles of each cooling air area have the same air pressure, one cooling air area connected with a glass heating furnace adopts a non-equidistant conveying roller arrangement mode, one end close to the output direction of the conveying roller way has a larger roller distance than the other end, the air blowing nozzles opposite to the conveying roller way also adopt a non-equidistant arrangement mode, so that the air blowing nozzles close to one end of the output direction of the conveying roller way have the same air pressure and larger distribution distance compared with the air blowing nozzles close to one end of the input direction, and different air flow density distributions are formed in the conveying direction of the glass.
Further, the position of the air blowing nozzle is opposite to the gap between the adjacent conveying rollers in the conveying roller way.
Further, the blowing nozzles above and below the conveying roller way are arranged symmetrically up and down.
Further, in one cooling air zone, the opposite conveyor table is divided into a plurality of segments, and the segment near one end of the conveyor table in the output direction has a larger roller spacing than the segment at the other end.
Further, the conveying rollers in the same section of the conveying roller table have the same roller spacing.
Further, among the plurality of sections of the conveying roller way, the conveying rollers in one section have the same roller spacing, the conveying rollers in the other section are distributed in a non-equidistant mode, and one end, close to the output direction of the conveying roller way, has a larger roller spacing than the other end.
Further, in a cooling wind zone, the distribution distance of the conveying rollers increases from the input end to the output end of the conveying roller way.
Further, the distribution intervals of the conveying rollers are sequentially increased according to a rule or gradually increased irregularly.
Further, in the air grid group above the conveying roller way, air pressing plates are arranged between adjacent air blowing nozzles.
Further, the size of the air pressing plate is matched with the distance between the adjacent air blowing nozzles.
The invention has the beneficial effects that the conveying rollers and the air nozzles in the cooling air area with the same air pressure are arranged in a non-equidistant way, so that the distance between the follow-up air blowing nozzles in the cooling air area is increased while the glass discharging requirement is met by smaller roller distance, and the hot air discharging efficiency is improved. The arrangement mode of the blowing nozzles with the same wind pressure and different distribution intervals enables different air flow density distribution to be formed in the conveying direction of the glass, and the flow and discharge efficiency of hot air reflected from the glass is further enhanced. The structural mode does not influence the cooling uniformity of the glass in the conveying direction, reduces the difference of the cooling speeds of the middle part and the edge of the glass in the width direction, and improves the quality of the toughened glass.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of embodiment 2 of the present invention.
The drawing is marked with a heating furnace 1, a blowing nozzle 2, a wind pressing plate 3, glass 4 and a conveying roller way 5. L1 and L2 represent different segments, and L3 represents the spacing of the two conveying rollers.
Detailed Description
The technical scheme of the invention is clearly and completely described below with reference to the accompanying drawings and the specific embodiments. The specific matters listed in the following examples are not limited to the technical features necessary for solving the technical problems of the technical solutions described in the claims. Meanwhile, the list is only a part of embodiments of the present invention, but not all embodiments.
As shown in fig. 1 and 2, the cooling air grid of the glass comprises an upper air grid group and a lower air grid group which are respectively arranged above and below the conveying roller table 5 of the glass and used for blowing air to cool the upper surface and the lower surface of the glass. In the upper air grid group and the lower air grid group, a plurality of air blowing nozzles 2 are distributed at intervals along the conveying direction of the conveying roller way 5. The blowing nozzles 2 are also spaced apart and are arranged opposite the gap between adjacent conveyor rolls in the conveyor table 5, typically at a central position between adjacent conveyor rolls. The blowing nozzle 2 faces the conveying roller way 5 and is used for blowing air to the surface of the glass. The air blowing nozzles in the upper air grid group and the lower air grid group are generally arranged symmetrically up and down, the upper and lower arrangement positions are opposite, and the arrangement intervals are the same. But can be adjusted and changed correspondingly according to actual requirements.
The air grid group of the glass cooling air grid can be provided with a plurality of cooling air areas according to the requirement in the conveying direction of the conveying roller way 5, and the air blowing nozzles 2 of each cooling air area have the same air pressure. The wind pressure, the wind quantity and the like of each cooling wind area are determined according to different glass tempering processes. In the embodiment shown in fig. 1 and 2, a cooling air zone is shown in connection with the glass heating furnace 1, in which cooling air zone the blowing nozzles 2 each have the same blowing air pressure. The conveying roller ways 5 corresponding to the positions of the cooling wind areas adopt a non-equidistant conveying roller arrangement mode, and the roller spacing adjacent to the positions of the heating furnaces 1 is smaller, so that the discharging requirements of the heated and softened glass are met. One end close to the output direction of the conveying roller way 5 is provided with a larger roller distance than the other end so as to enlarge the exhaust space and facilitate the exhaust of hot air reflected from the glass. The blowing nozzles 2 opposite to the section of conveying roller way 5 are also arranged in a non-equidistant way. The distance between the blowing nozzles close to one end of the conveying roller way in the output direction is larger than the distance between the blowing nozzles close to one end of the conveying roller way in the input direction. In the glass conveying direction, each blowing nozzle has the same wind pressure and different distribution intervals, different air flow density distribution is formed in the glass conveying direction, and the flow and discharge efficiency of hot air reflected from the glass are enhanced.
In the embodiment shown in fig. 1 and 2, a wind-pressing plate 3 is arranged between adjacent wind blowing nozzles 2 in the wind grid group above the conveying roller table 5, and is used for adjusting the flow condition of the air flow above the glass. The width dimension of the air pressing plate 3 is correspondingly adjusted according to the size of the interval between the adjacent air blowing nozzles 2.
The roller spacing of the conveying roller table 5 and the blowing nozzles in the air grid group can be gradually increased according to a certain rule or can be irregularly increased. The specific value is determined according to the thickness of the glass, the layout, the required air hole density, the air return interval and the like. For example, in one cooling wind zone, the conveyor table 5 opposite thereto is divided into a plurality of segments, and the segment near one end in the output direction of the conveyor table 5 has a larger roller spacing than the segment at the other end. And the same roll spacing between the conveyor rolls in the same segment. For example, in example 1 shown in fig. 1, a conveyor table 5 in a cooling air zone connected to a heating furnace 1 is divided into two segments L1 and L2. Wherein the roll pitch of the segment L1 and the pitch of the blowing nozzle 2 are smaller, and the roll pitch of the segment L2 and the pitch of the blowing nozzle 2 are larger. The glass 4 is heated in the heating furnace 1 to reach a softening point and then is conveyed out, and enters a cooling air zone of the cooling air grid under the conveying of the conveying roller way 5, and the interval between rollers of the L1 zone is smaller and is used for receiving the heated glass 4 conveyed out of the heating furnace 1. The smaller roller spacing in the L1 interval can ensure that the glass 4 runs stably in the process of being conveyed out of the heating furnace 1, and the wave bending phenomenon can not occur. After the glass 4 passes through the L1 section, the glass is cooled through the upper and lower air blowing nozzles 2, the front end of the glass 4 has certain strength, and the glass can be stably conveyed on the conveying roller way 5 with larger roller spacing without damage, and the glass 4 cannot be affected by the large roller spacing section entering the L2. The distance between the upper air blowing nozzle 2 and the lower air blowing nozzle 2 of the L2 larger roller distance section is correspondingly larger, and on the premise of meeting the wind pressure and the blowing quantity of the glass 4 tempering requirement, the larger roller distance can ensure enough air return space, so that the cooling wind blown to the surface of the glass 4 can be smoothly discharged to the outside of the air grid, thereby not only meeting the requirement of uniform cooling of the glass 4, but also reducing the energy loss of a cooling system and improving the energy utilization rate.
In example 2 shown in fig. 2, L3 represents the distance between two conveying rollers in the conveying roller table 5. The roller way spacing varies progressively from the first conveyor roller close to the heating furnace 1 to the last conveyor roller far from the heating furnace 1. This variation meets the glass delivery requirements of gradual cooling hardening. The incremental change may be a regularly incremental array of numbers, the incremental change being the same or increasing stepwise according to a regular incremental change. The incremental change may also be irregular, with the incremental change being irregular.
In a non-drawing embodiment, the embodiments of fig. 1 and 2 can be combined, in which the opposite conveyor table 5 is divided into several segments in one cooling wind zone. Wherein the partial segments refer to the embodiment of fig. 1 with the same roll spacing between the conveyor rolls and the segments near one end of the run-out direction of the conveyor table 5 have a larger roll spacing than the segments at the other end. Another part of the segments refers to the embodiment of fig. 2, in which the conveying rollers are arranged in a non-equidistant manner, and one end near the output direction of the conveying roller way has a larger roller spacing than the other end.
Compared with the mode that the roller spacing in one cooling air area is uniformly arranged, the glass cooling air grid has better flatness and quality after tempering. Through comparison test, the glass with the thickness of 3.2mm, the length of 2280mm and the width of 1150mm is toughened, the technological parameters of the glass heating furnace are the same, and the length of a cooling partition connected with the heating furnace is 2900mm. The embodiment in this cooling zone employs a non-equidistant arrangement of roller conveyor and air blowers, arranged in two segments, a first segment of length 630mm, a roll spacing of 90mm, a second segment of length 2200mm, and a roll spacing of 100mm. The comparative example adopts an equidistant arrangement of a conveying roller way and a blowing nozzle, and the roller distance is 90mm. The cooling section is followed by the equipment and process, examples and comparative examples being identical. The glass toughened by the embodiment of the invention has no bulge, the flatness and the surface optical property are superior to those of the glass toughened by the comparative example, the stress value can be the same as that of the glass toughened by the comparative example, and the energy consumption of the embodiment is obviously reduced. The structure of the glass cooling air grid does not affect the cooling uniformity of the glass in the conveying direction, reduces the difference of cooling speeds of the middle part and the edge of the glass in the width direction, and improves the quality of the toughened glass.
The above description of the specific embodiments is only for aiding in understanding the technical concept of the present invention and its core idea, and although the technical solution has been described and illustrated using specific preferred embodiments, it should not be construed as limiting the present invention itself. Workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit of the invention. Such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410970965.7A CN118495796B (en) | 2024-07-19 | 2024-07-19 | A non-uniformly spaced cooling air grille |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410970965.7A CN118495796B (en) | 2024-07-19 | 2024-07-19 | A non-uniformly spaced cooling air grille |
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| Publication Number | Publication Date |
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| CN118495796A CN118495796A (en) | 2024-08-16 |
| CN118495796B true CN118495796B (en) | 2024-12-10 |
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| CN202410970965.7A Active CN118495796B (en) | 2024-07-19 | 2024-07-19 | A non-uniformly spaced cooling air grille |
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| CN119038864B (en) * | 2024-08-27 | 2025-03-28 | 东莞市乐际电子科技有限公司 | Prevent on-vehicle industrial control equipment for toughened glass of blue light |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202400961U (en) * | 2012-01-10 | 2012-08-29 | 洛阳北方玻璃技术股份有限公司 | Air blowing unit adopting compressed air tempering thin glass |
| CN203683362U (en) * | 2014-01-15 | 2014-07-02 | 洛阳兰迪玻璃机器股份有限公司 | Non-equidistant conveying roller table of glass tempering furnace |
| CN216785987U (en) * | 2021-12-29 | 2022-06-21 | 郴州旗滨光伏光电玻璃有限公司 | Heat radiation structure and air grid room |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201746448U (en) * | 2010-08-13 | 2011-02-16 | 浙江鼎玻自动化设备有限公司 | Glass tempering furnace |
| CN202671402U (en) * | 2012-06-22 | 2013-01-16 | 杭州精工机械有限公司 | Compressed air quenching section special for ultrathin toughened glass production line |
| FI126859B (en) * | 2016-03-18 | 2017-06-30 | Glaston Finland Oy | A method and apparatus for bending and curing a sheet of glass |
| CN208327809U (en) * | 2018-06-07 | 2019-01-04 | 吴江南玻玻璃有限公司 | A kind of reinforcing device of 2mm glass |
| CN112321139A (en) * | 2019-08-05 | 2021-02-05 | 洛阳兰迪玻璃机器股份有限公司 | Tempered glass heat setting roller way system and tempered glass production equipment |
| CN211814153U (en) * | 2019-12-24 | 2020-10-30 | 洛阳北方玻璃技术股份有限公司 | A pressure aerofoil for tempering equipment air grid |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202400961U (en) * | 2012-01-10 | 2012-08-29 | 洛阳北方玻璃技术股份有限公司 | Air blowing unit adopting compressed air tempering thin glass |
| CN203683362U (en) * | 2014-01-15 | 2014-07-02 | 洛阳兰迪玻璃机器股份有限公司 | Non-equidistant conveying roller table of glass tempering furnace |
| CN216785987U (en) * | 2021-12-29 | 2022-06-21 | 郴州旗滨光伏光电玻璃有限公司 | Heat radiation structure and air grid room |
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