CN111718109A - Graded static pressure air grid of glass tempering furnace and glass tempering cooling method - Google Patents
Graded static pressure air grid of glass tempering furnace and glass tempering cooling method Download PDFInfo
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- CN111718109A CN111718109A CN202010471835.0A CN202010471835A CN111718109A CN 111718109 A CN111718109 A CN 111718109A CN 202010471835 A CN202010471835 A CN 202010471835A CN 111718109 A CN111718109 A CN 111718109A
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- 238000001816 cooling Methods 0.000 title claims abstract description 134
- 239000011521 glass Substances 0.000 title claims abstract description 63
- 230000003068 static effect Effects 0.000 title claims abstract description 57
- 238000005496 tempering Methods 0.000 title claims abstract description 42
- 238000007664 blowing Methods 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract description 55
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
- 239000005341 toughened glass Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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- 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
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
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Abstract
The invention discloses a graded static pressure air grid of a glass tempering furnace and a glass tempering cooling method, which comprise an air collecting box and a plurality of air grid units, wherein each air grid unit comprises a small air box, a cooling nozzle, an air blowing part and a pressure equalizing device, the air blowing part is provided with a hollow cavity, one end of the hollow cavity is connected with the small air box, the other end of the hollow cavity is provided with a plurality of cooling nozzles, the pressure equalizing device is arranged in the small air box and/or the air blowing part and/or between the small air box and the air blowing part, the pressure equalizing device is of a pore plate structure and/or a wind distributing guide plate, the pore plate structure is provided with a plurality of vent holes, and the total area of the vent holes of the pore plate structure is 1-12 times of; the invention makes the wind pressure sprayed out by the cooling nozzle more uniform and stable by arranging the wind collecting box, the small wind box and the pressure equalizing device between the small wind box and the blowing part of the cooling air grid.
Description
Technical Field
The invention relates to the technical field of glass tempering furnace accessories, in particular to a graded static pressure air grid of a glass tempering furnace and a glass tempering cooling method.
Background
In the prior art, a glass tempering furnace is required for producing tempered glass, and a generally adopted production method is that the glass tempering furnace heats and then carries out quenching treatment on plate glass, so that cooled glass is changed due to internal stress, the strength of the glass is improved, and a cooling air grid is usually used in the process of cooling the heated glass. The uniformity of air blowing of the air grid plays a crucial role in the quality of glass tempering processing, in order to ensure the uniformity as much as possible, the air inlet box of the cooling air grid of the existing glass tempering furnace adopts a side air inlet or middle air inlet mode, the air outlet of the air grid is uniform as much as possible through a mode that the cross section is gradually reduced, and the small air boxes in the prior art adopt structures with angles, so that the uniformity effect of the air pressure at two sides of the air grid is improved, but the air pressure at two ends of the air grid still has certain difference, thereby influencing the stress uniformity of glass in the tempering process and causing the formation of air spots on the surface of the tempered glass.
Therefore, how to ensure the uniformity and stability of the wind pressure sprayed by the air grid and the more uniform glass heating becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a graded static pressure air grid of a glass tempering furnace, wherein a pressure equalizing device is arranged between a small air box and an air blowing part of a cooling air grid, so that the air pressure in the air blowing part is stable and uniform.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a glass tempering furnace grading static pressure air grid, includes album of wind case, little bellows, cooling nozzle, blows wind portion and pressure-equalizing device, it is equipped with the cavity to blow the wind portion, and little bellows is connected to one end, and the other end is provided with a plurality of cooling nozzle, pressure-equalizing device set up in little bellows and/or in the portion of blowing and/or little bellows and between the portion of blowing, pressure-equalizing device is orifice plate structure and/or divides the wind guide plate, the cooling nozzle is round hole formula or slot type air outlet.
Further, the pore plate structure is a circular hole type pore plate or a slit type pore plate.
Furthermore, the number of the pore plate structures is one, and the total area of the vent holes of the pore plate structures is 1-12 times of the total area of the air outlets of the cooling nozzles. Preferably, the total area of the vent holes of the orifice plate structure is 3-7 times the total area of the air outlet of the cooling nozzle.
Furthermore, the pore plate structures are multiple and parallel to each other, and the total area of the vent holes of one pore plate structure closest to the cooling nozzle is 1-12 times of the total area of the air outlet of the cooling nozzle. Preferably, the total area of the vent holes of the orifice plate structure is 3-7 times the total area of the air outlet of the cooling nozzle.
Furthermore, the pore plate structure is a strip-shaped pore plate, and the strip-shaped pore plate is arranged at the air outlet of the small air box.
Furthermore, a plurality of supporting structures are arranged in the hollow cavity of the air blowing part and used for supporting the air blowing part.
Furthermore, the slit type pore plate is formed by uniformly arranging a plurality of obliquely arranged slit type pores.
Further, the air blowing part and the orifice plate structure are independent parts.
Furthermore, the holes at all positions on the pore plate structure are reduced along with the increase of the wind pressure above the holes, so that the uniformity of the wind pressure at all positions of the small wind box after passing through the pore plate structure is ensured.
Furthermore, the air inlet mode of the small air box is side air inlet or middle air inlet.
Furthermore, the wind distribution guide plates are multiple, and the wind distribution guide plates are flat plates or flat plates with bent part tail ends.
Furthermore, the slit type air outlet is a linear long strip air outlet extending along the direction vertical to the glass conveying direction, and the length of the linear long strip air outlet is matched with that of the air grid. The matching relation is that the length of the air outlet is slightly smaller than that of the air grid so as to ensure that the length of the slit air outlet is larger than the width of the maximum glass which can be contained by the existing air grid.
Furthermore, the slit type air outlet is a linear strip-shaped air outlet with the width being uniformly reduced.
According to the graded static pressure air grid of the glass tempering furnace, graded static pressure is formed by the air collecting box and the small air box, and the pressure equalizing device is arranged between the air blowing part of the cooling air nozzle and the small air box, so that the air pressure of cooling air is more stable and uniform. Cooling air enters the air collecting box from the fan, and primary static pressure is formed in the air collecting box; cooling air in the air collecting box enters the small air box through the air inlet to form a first-stage static pressure; cooling air in the small air box forms second-stage static pressure after passing through the pressure equalizing device; finally, the cooling air reaches the glass surface to be cooled from the cooling air nozzle. After the layered static pressure, the wind pressure of the cooling wind is kept uniform and stable.
The wind deflector can make the wind of the inside different positions of little bellows more even, and the size design in the hole of each position on the orifice plate structure can be according to the increase of its top wind pressure and reduce to guarantee the homogeneity of the wind pressure behind the orifice plate structure of the wind pressure of the different positions of little bellows. Further, the optimized layout design of the air guide plates and the pore plate structure can ensure that the air sprayed by the cooling nozzles in the small air box and at different positions is more uniform, and finally the glass toughening effect is improved.
The invention also provides a technical scheme, which comprises the following steps:
a glass tempering and cooling method, comprising:
the method comprises the following steps: cooling air is guided to enter the small air box to form first-stage static pressure;
step two: after cooling air in the small air box passes through the pressure equalizing device, a second-stage static pressure is formed;
step three: and spraying the cooling air subjected to the second-stage static pressure to the surface of the glass to be cooled from the cooling nozzle to cool the surface of the glass.
Further, the method also comprises the initial step before the step one: the cooling air enters the air collecting box, and primary static pressure is formed in the air collecting box.
Further, the pressure equalizing device is a round hole type orifice plate, a slit type orifice plate or a square hole type orifice plate.
Drawings
FIG. 1 is a schematic structural diagram of a staged static pressure air grid according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a two-stage static pressure air grid mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a three-stage static pressure air grid according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a four-staged static pressure air grid according to an embodiment of the present invention;
FIG. 5 is a first schematic view of the installation of the orifice plate structure of the present invention;
FIG. 6 is a schematic structural diagram of a first orifice plate according to the present invention;
FIG. 7 is a schematic structural diagram of a second orifice plate according to the present invention;
FIG. 8 is a first schematic structural diagram of a cooling nozzle according to a fourth embodiment of the present invention;
FIG. 9 is a schematic view of a second embodiment of the cooling nozzle of the present invention;
FIG. 10 is a schematic structural view of a five-stage static pressure air grid according to an embodiment of the present invention;
FIG. 11 is a second schematic view of the installation of the orifice plate structure of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the example of the present invention, and it is obvious that the described example is only a part of the example of the present invention, and not a whole example. All other embodiments obtained by a person skilled in the art based on the examples of the present invention without any inventive step shall fall within the scope of protection of the present invention.
In the description of the present embodiment, the terms "inside", "outside", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish similar items and are not to be construed as requiring a particular order or sequence, and it is to be understood that such uses are interchangeable under appropriate circumstances.
To clearly illustrate the idea of the present invention, the present invention is described below with reference to examples.
The utility model provides a glass tempering furnace grading static pressure air grid includes the wind-collecting box, includes wind-collecting box, little bellows, cooling nozzle, blows wind portion and pressure-equalizing device, it is equipped with the cavity to blow the wind portion, and little bellows is connected to one end, and the other end is provided with a plurality of cooling nozzle, pressure-equalizing device set up in little bellows and/or in the portion of blowing and/or little bellows with between the portion of blowing, pressure-equalizing device is orifice plate structure and/or divides the wind guide plate, cooling nozzle is round hole formula or slot type air outlet.
According to the graded static pressure air grid of the glass tempering furnace, the pressure equalizing device is arranged in the small air box and/or the blowing part and/or between the small air box and the blowing part, primary static pressure is formed in the air collecting box in the working process, secondary static pressure is formed after air in the air collecting box enters the small air box through the air inlet, the air after the air pressure is uniform enters the blowing part of the cooling air nozzle through the pressure equalizing device, the air pressure at two ends of the blowing part is guaranteed to be kept uniform and stable, the air pressure is uniformly dispersed to the cooling nozzle, and the air pressure of the air discharged from the cooling nozzle is stable and uniform.
Example one
As shown in fig. 1, 5 and 6, the graded static pressure air grid of the glass tempering furnace comprises an air collecting box 3 and a plurality of air grid units, wherein each air grid unit comprises a small air box 2, a cooling nozzle 5, an air blowing part 4 and a pressure equalizing device, the pressure equalizing device is arranged between the small air box 2 and the air blowing part 4, the pressure equalizing device comprises a pore plate structure 1, the pore plate structure 1 is one of a circular hole type pore plate or a slit type pore plate or a square hole type pore plate, in the embodiment, the pore plate structure is a circular hole type pore plate, a plurality of vent holes are arranged on the pore plate structure 1, and the total area of the vent holes of the pore plate structure 1 is twice of the total area of air outlets of the cooling nozzle 5.
In the above example, as shown in fig. 1, the glass tempering furnace is provided with a wind collecting box 3, and the wind collecting box 3 is communicated with the wind inlet of the small wind box 2 through a wind inlet pipe, wherein the wind inlet of the small wind box 2 is in a necking structure, and as can be seen from fig. 1, the top plate of the small wind box 2 is arranged obliquely. The air outlet of the small air box 2 is provided with a long strip-shaped round hole type pore plate, all the air in the small air box 2 passes through the round hole type pore plate and then enters the air blowing part 4, and four rows of round holes 1-1 which are arranged in a staggered mode are arranged on the round hole type pore plate, so that the air pressure of the air blown out by the air blowing part 4 is balanced. In this embodiment, the cooling nozzle 5 of the cooling air grid is provided with a slit-type air outlet as an air outlet of the cooling nozzle 5, and the total area of the ventilation holes of the circular hole-type hole plate is twice as large as the total area of the ventilation holes of the air outlet of the cooling nozzle 5. In some application environments, the aperture of the round hole 1-1 on the round hole type orifice plate is changed from large to small along the direction from the near end to the far end of the air inlet of the small air box 2, so that the change of the air pressure above the round hole type orifice plate is adapted, and the air pressure is relatively uniform after different air pressures above the round hole type orifice plate pass through the round hole type orifice plate.
It should be noted that the ratio of the total area of the vent holes of the circular hole type orifice plate to the total area of the vent holes of the air outlet of the cooling nozzle 5 can be changed by adjusting the number and the diameter of the circular holes 1-1 on the circular hole type orifice plate, for example, two rows of mutually staggered circular holes can be arranged on the circular hole type orifice plate, so that the total area of the vent holes of the circular hole type orifice plate is equal to the total area of the vent holes of the air outlet of the cooling nozzle 5; and so on.
As shown in fig. 2, the circular hole type orifice plate as the orifice plate structure 1 is installed between two side walls of the hollow cavity of the blowing part 4 perpendicular to the axis of the cooling air nozzle 5, and since the length of the cooling air grid is large during the production of large tempered glass in the actual production, the structural strength of the cooling air grid itself often affects the stability and uniformity of the air pressure of the air discharged from the cooling nozzle 5. In this embodiment, as shown in fig. 1, two rows of support columns are arranged in the hollow cavity of the blowing part 4 to support the blowing part 4, and the circular hole type hole plate can also play a role in supporting the blowing part 4, thereby improving the structural strength of the cooling air grid and further improving the air pressure stability of the air outlet of the cooling nozzle 5.
According to the graded static pressure air grid of the glass tempering furnace, the pressure equalizing device is arranged, primary static pressure is formed in the air collecting box 3 in the working process, air in the air collecting box 3 forms primary static pressure after entering the small air box 2 through the air inlet, secondary static pressure is formed after the air pressure is uniform and passing through the pressure equalizing device, cooling air enters the air blowing part 4 of the cooling air nozzle 5, the air pressure of the cooling air in the air blowing part 4 keeps balanced and stable and is uniformly dispersed to the cooling nozzle 5, the air pressure of air discharged from the cooling nozzle 5 is stable and uniform, the cooling effect on glass is improved when the cooling air is blown to the surface of the glass, the generation of wind spots on tempered glass is avoided to the greatest extent, and the quality of products is improved.
Example two
As shown in figure 2, the graded static pressure air grid of the glass tempering furnace comprises an air collecting box 3 and a plurality of air grid units, wherein each air grid unit comprises a small air box 2, a cooling nozzle 5, an air blowing part 4 and a pressure equalizing device, and the pressure equalizing device is arranged in the small air box 2. In this embodiment, the pressure equalizing device is a wind distributing guide plate 6, the upper and lower surfaces of the wind distributing guide plate 6 perpendicular to the small air box 2 are arranged, as shown in fig. 4, the small air box 2 is internally provided with three wind distributing guide plates 6 for guiding cooling wind in the air collecting box 3 into the small air box 2, the wind distributing guide plate 6 is divided into a long strip-shaped plate and an arc-shaped plate, and the wind pressure is balanced when the cooling wind reaches the cooling nozzle 5.
In the above example, as shown in fig. 2, the glass tempering furnace is provided with a wind collecting box 3, the wind collecting box 3 is communicated with the wind inlet of the small wind box 2 through a wind inlet pipe, wherein the wind inlet of the small wind box 2 is of a throat structure, the top plate of the small wind box 2 is arranged obliquely, the wind distributing guide plate 6 comprises three plates, two long strip plates and one bent-end plate, as shown in fig. 4, the two long strip plates are arranged on the upper half part of the small wind box 2 and extend to the far end of the small wind box 2, and the bent-end plate is arranged on the lower half part of the small wind box 2 and is close to the wind inlet of the small wind box 2. In the above example, since the air pressure at the air inlet far from the small air box 2 is higher than the air pressure at the air inlet close to the small air box 2, the three plates provided in the present embodiment can adjust and equalize the air pressure inside the small air box 2, and reduce the air pressure difference between the near end and the far end of the air inlet of the small air box 2.
In this embodiment, the cooling nozzle 5 of the cooling air grid is provided with a slit-type air outlet as an air outlet of the cooling nozzle 5.
According to the graded static pressure air grid of the glass tempering furnace, the pressure equalizing device is arranged, primary static pressure is formed in the air collecting box 3 in the working process, primary static pressure is formed after air in the air collecting box 3 enters the small air box 2 through the air inlet, secondary static pressure is formed after the air pressure is uniform through the pressure equalizing device, cooling air enters the air blowing part 4 of the cooling air nozzle 5, the cooling air in the air blowing part 4 is uniformly dispersed to the cooling nozzle 5, the air pressure of air outlet of the cooling nozzle 5 is stable and uniform, the cooling effect on glass is improved when the cooling air is blown to the surface of the glass, the generation of wind spots on tempered glass is avoided to the greatest extent, and the product quality is improved.
EXAMPLE III
As shown in fig. 3 and 11, the graded static pressure air grid of the glass tempering furnace comprises an air collecting box 3, a small air box 2, a cooling nozzle 5 and an air blowing part 4, wherein pressure equalizing devices are arranged in the small air box 2 and the air blowing part 4, each pressure equalizing device comprises a pore plate structure 1 and an air distribution guide plate 6, the pore plate structure 1 is a circular hole type pore plate, and the total area of air vents of the pore plate structure 1 is 6 times of the total area of air outlets of the cooling nozzle 5.
In the above example, as shown in fig. 3, the glass tempering furnace is provided with a wind collecting box 3, and the wind collecting box 3 is communicated with the wind inlet of the small wind box 2 through a wind inlet pipe, wherein the wind inlet of the small wind box 2 is in a necking structure, and as can be seen from the figure, the top plate of the small wind box 2 is arranged obliquely. A long circular hole type orifice plate is attached to the joint between the small wind box 2 and the blowing part 4, and in the present embodiment, as shown in fig. 9, the outlet of the cooling nozzle 5 is a slit type outlet.
As shown in fig. 5, the circular hole type orifice plate as the orifice plate structure 1 is installed between the two side walls of the blowing part 4 perpendicular to the axis of the cooling air nozzle, and since the length of the cooling air grid is generally long in actual production, the structural strength of the cooling air grid often affects the stability and uniformity of the air pressure of the air discharged from the cooling nozzle 5. As shown in fig. 1, two rows of support columns 7 are arranged in the blowing part to support the blowing part, and the round hole type pore plate can also play a role in supporting the blowing part 4, so that the structural strength of the cooling air grid is improved, and the stability of the air pressure of the air outlet of the cooling nozzle 5 is further improved.
The air distributing guide plates 6 are arranged on the upper surface and the lower surface of the small air box 2, in the embodiment, three air distributing guide plates 6 are arranged in the small air box 2 to guide cooling air in the air collecting box 3 into the small air box 2, each air distributing guide plate 6 comprises two strip-shaped plates and a flat plate with the tail end bent, and the air pressure is balanced when the cooling air reaches the cooling nozzle. As shown in the figure, two strip-shaped flat plates are obliquely arranged on the upper half part of the small air box 2 in parallel with the inclined top plate of the small air box and extend to the far end of the small air box 2, and the flat plate with the bent tail end is arranged on the lower half part of the small air box 2 and is close to the air inlet of the small air box 2. Because the air pressure at the air inlet far away from the small air box 2 is higher than the air pressure at the air inlet close to the small air box 2, the three plates arranged in the embodiment can adjust and homogenize the air pressure in the small air box 2, and reduce the air pressure difference between the near end and the far end of the air inlet of the small air box 2;
as shown in fig. 7, along the direction from the near end to the far end of the air inlet of the small air box 2, the aperture of the hole 1-1 on the circular hole type pore plate is changed from large to small, so as to adapt to the change of the air pressure above the slit type pore plate, so that the air pressure is relatively uniform after different air pressures on the circular hole type pore plate pass through the circular hole type pore plate; the slit orifice plate and the air distribution guide plate are mutually matched, so that the air pressure of cooling air entering the air blowing part 4 from the small air box 2 is balanced.
Through the combined application of the circular hole type pore plate structure and the air distribution guide plate, cooling air can more uniformly reach the cooling nozzle.
According to the graded static pressure air grid of the glass tempering furnace, the pressure equalizing device is arranged, primary static pressure is formed in the air collecting box 3 in the working process, air in the air collecting box 3 forms primary static pressure after entering the small air box 2 through the air inlet, secondary static pressure is formed after the air pressure is uniform and passing through the pressure equalizing device, cooling air enters the air blowing part 4 of the cooling air nozzle 5, the air pressure of the cooling air in the air blowing part 4 keeps balanced and stable and is uniformly dispersed to the cooling nozzle 5, the air pressure of air discharged from the cooling nozzle 5 is stable and uniform, the cooling effect on glass is improved when the cooling air is blown to the surface of the glass, the generation of wind spots on tempered glass is avoided to the greatest extent, and the quality of products is improved.
Example four
As shown in FIG. 4, the staged static pressure air grid of the glass tempering furnace comprises an air collecting box 3 and a plurality of grid units, wherein each grid unit comprises a small air box 2, a cooling nozzle 5, an air blowing part 4 and a pressure equalizing device, and the pressure equalizing device is arranged in the small air box 2. In this embodiment, the pressure equalizing device is a wind distributing guide plate 6, the wind distributing guide plate 6 is arranged on two upper and lower surfaces of the small air box 2, as shown in fig. 4, three wind distributing guide plates 6 are arranged in the small air box 2 to guide cooling wind in the air collecting box 3 into the small air box 2, the wind distributing guide plate 6 is divided into a strip-shaped plate and a flat plate with a bent end, and the wind distributing guide plates are matched with each other to balance wind pressure when the cooling wind reaches the cooling nozzle. The glass tempering furnace is provided with an air collecting box 3, the air collecting box 3 is communicated with an air inlet of a small air box 2 through an air inlet pipe, wherein the air inlet of the small air box 2 is of a necking structure, a top plate of the small air box 2 is arranged in an inclined mode, an air distribution guide plate 6 comprises three plates, two long strip-shaped flat plates and a flat plate with a bent tail end are arranged, as shown in the figure, one end of each long strip-shaped flat plate is connected with the inclined top plate of the small air box 2, and the flat plate with the bent tail end is arranged at the position close.
In the above example, the cooling nozzle 5 is a slit outlet, as shown in fig. 8, which is a linear strip outlet with a uniformly decreasing width along the direction from the proximal end to the distal end of the inlet of the small air box 2.
In the above example, since the wind pressure at the wind inlet far from the small wind box 2 is higher than the wind pressure at the wind inlet close to the small wind box 2, the three plates provided in this embodiment can adjust and homogenize the wind pressure inside the small wind box 2, and reduce the wind pressure difference between the near end and the far end of the wind inlet of the small wind box 2; meanwhile, a gap type air outlet with uniformly reduced width is arranged to control the air volume and the air pressure of the near end and the far end of the air inlet of the small air box 2; the above two are combined to equalize the wind pressure of the cooling wind blown out from the slit type outlet of the cooling nozzle 5.
EXAMPLE five
As shown in fig. 5, 6 and 10, the graded static pressure air grid of the glass tempering furnace of the present invention comprises an air collecting box 3 and a plurality of air grid units, wherein each air grid unit comprises a small air box 2, a cooling nozzle 5, an air blowing part 4 and a pressure equalizing device, the pressure equalizing device is arranged between the small air box 2 and the air blowing part 4, the pressure equalizing device comprises a pore plate structure 1, the pore plate structure 1 is one of a circular hole type pore plate, a slit type pore plate or a square hole type pore plate, in the present embodiment, the pore plate structure is a circular hole type pore plate, a plurality of vent holes are arranged on the pore plate structure, and the total area of the vent holes of the pore plate structure is 12 times of the total area of the air outlets of the cooling nozzle.
The difference from the first embodiment is that in the present embodiment, the small air box 2 is used for middle air intake, and an air intake opening is formed on a top plate of the small air box 2 and communicated with the air collecting box 3. In addition, the orifice plate structure 1 is a circular orifice plate, a plurality of rows of circular orifices are arranged on the circular orifice plate, and the apertures of the circular orifices gradually change from the middle part of the circular orifice plate to the apertures at two ends so as to adapt to the change of the air pressure above the circular orifice plate and balance the air pressure of the air blown out by the air blowing part 4.
The rest of this embodiment is consistent with the other embodiments, and thus, the description thereof is omitted.
EXAMPLE six
The structure of the embodiment is the same as that of the embodiment, and the difference is that a plurality of pore plate structures 1 serving as the air equalizing device can be arranged between the small air box 2 and the air blowing part 4 and are parallel to each other, the total area of the vent holes of one pore plate structure 1 closest to the cooling nozzles is 3 times of the total area of the air outlets of the cooling nozzles 5, and a plurality of circular holes are arranged on the pore plate structure 1 and are shown in fig. 6; the aperture of the round holes on the other orifice plate structures 1 is not changed, and the total ventilation area of the round holes 1-1 is the same as the total air outlet area of the cooling nozzle 5.
Besides, the position of the orifice plate structure 1 may be in the small bellows, in the blowing part 4, or dispersed in the small bellows 2 and the blowing part 4, and may be placed at the connection of the small bellows 2 and the blowing part 4 as described above. In the actual production process, the placing positions of the above components can be flexibly combined. In the above example, the orifice plate structure 1 is connected to both side walls of the blowing part 4 or the small air box 2, and the orifice plate structure 1 is perpendicular to both side walls of the blowing part 4 or the small air box 2.
EXAMPLE seven
The invention relates to a glass toughening cooling method, which comprises the following steps: the cooling air in the air collecting box forms primary static pressure in the air collecting box and enters the small air box through guiding to form primary static pressure; after cooling air in the small air box passes through the pressure equalizing device, a second-stage static pressure is formed; and spraying the cooling air subjected to the second-stage static pressure to the surface of the glass to be cooled from the cooling nozzle to cool the surface of the glass. The pressure equalizing device comprises a round hole type pore plate, a slit type pore plate or a square hole type pore plate, and the total area of the vent holes of the pressure equalizing device is 7 times of the total area of the air outlets of the cooling nozzles.
It is noted that some of the structures may be selected differently than the specific examples given above. For example, the shapes of the vent holes of the orifice plate structure and the air outlets of the cooling nozzles do not have a one-to-one correspondence, and only the area ratio needs to be satisfied. Alternatively, the orifice plate structure may have square or slotted holes instead of circular holes. Alternatively, as shown in fig. 9, the plurality of slit outlets may be inclined strip outlets or wave-shaped outlets. Not all embodiments are listed in the above examples; and so on. These are all made by those skilled in the art based on their basic skills in understanding the idea of the present invention, and are not to be exemplified herein.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not intended to be limiting. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention, and these changes and modifications are to be considered as within the scope of the invention.
Claims (10)
1. A glass tempering and cooling method is characterized by comprising the following steps:
the method comprises the following steps: cooling air is guided to enter the small air box to form first-stage static pressure;
step two: after cooling air in the small air box passes through the pressure equalizing device, a second-stage static pressure is formed;
step three: and spraying the cooling air subjected to the second-stage static pressure to the surface of the glass to be cooled from the cooling nozzle to cool the surface of the glass.
2. The cooling method for glass tempering according to claim 1, further comprising an initial step before step one: the cooling air enters the air collecting box, and primary static pressure is formed in the air collecting box.
3. The glass tempering and cooling method according to claim 1, wherein said pressure equalizing device is a round hole type orifice plate or a slit type orifice plate or a square hole type orifice plate.
4. The utility model provides a glass tempering furnace grading static pressure air grid, its characterized in that includes album wind box and a plurality of air grid unit, every air grid unit includes little bellows, cooling nozzle, blows wind portion and voltage-sharing device, it is equipped with the cavity to blow the wind portion, and one end is connected little bellows, and the other end is provided with a plurality of cooling nozzle, voltage-sharing device sets up in little bellows and/or in the portion of blowing and/or little bellows with between the portion of blowing, voltage-sharing device is orifice plate structure and/or branch wind guide plate, the total area of ventilation hole of orifice plate structure is 1-12 times of the total area of the air outlet of cooling nozzle, the cooling nozzle is round hole formula or slot type air outlet.
5. The staged static pressure air grid for a glass tempering furnace according to claim 4, wherein said orifice plate structure is a circular orifice plate or a slit orifice plate or a square orifice plate.
6. The staged static pressure air grid for a glass tempering furnace according to claim 5, wherein said orifice plate structure is one, and the total area of said air vents is 1-12 times the total area of said air outlets of said cooling nozzles.
7. The staged static pressure air grid for a glass tempering furnace according to claim 5, wherein said perforated plate structure is plural and parallel to each other, and the total area of the vent holes of one perforated plate structure closest to the cooling nozzles is 1-12 times the total area of the air outlet of the cooling nozzles.
8. The staged static pressure air grid for a glass tempering furnace according to any one of claims 6 to 7, wherein said orifice plate structure is an elongated orifice plate, and said elongated orifice plate is arranged at the air outlet of said small air box.
9. The staged static pressure air grid for a glass tempering furnace according to claim 4, wherein a plurality of supporting structures are provided in said hollow chamber for supporting said blowing part.
10. The staged static pressure air grid for a glass tempering furnace according to claim 4, wherein said air blowing part and said orifice plate structure are independent parts.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115043582A (en) * | 2022-07-14 | 2022-09-13 | 洛阳北方玻璃技术股份有限公司 | Air supply method and device for glass bending and toughening equipment |
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| CN212315925U (en) * | 2020-05-29 | 2021-01-08 | 洛阳兰迪玻璃机器股份有限公司 | Graded static pressure air grid of glass tempering furnace |
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| CN201648224U (en) * | 2009-11-25 | 2010-11-24 | 中国科学院上海硅酸盐研究所 | Whole-surface uniform air-cooling device for glass toughening equipment |
| US20110167871A1 (en) * | 2010-01-11 | 2011-07-14 | Glaston Services Ltd. Oy | Method and apparatus for supporting and heating glass sheets on a hot gas cushion |
| CN102167502A (en) * | 2010-01-11 | 2011-08-31 | 格拉斯顿服务有限公司 | Method and apparatus for supporting and heating glass sheets on a hot gas cushion |
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