CN103274586A - Glass toughening furnace - Google Patents
Glass toughening furnace Download PDFInfo
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- CN103274586A CN103274586A CN2013102610676A CN201310261067A CN103274586A CN 103274586 A CN103274586 A CN 103274586A CN 2013102610676 A CN2013102610676 A CN 2013102610676A CN 201310261067 A CN201310261067 A CN 201310261067A CN 103274586 A CN103274586 A CN 103274586A
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Abstract
The invention discloses a glass toughening furnace which comprises an upper hearth, a lower furnace, a live-roller gear, furnace wires, radiant panels, a radiant tube set and convection tubes, wherein the radiant tube set is mounted in the upper hearth in a hoisting manner, arranged below the furnace wires, and formed by connecting a plurality of parallel radiant tubes side by side; the convection tubes are hoisted and mounted below the radiant tubes; air inlet ends of the convection tubes are communicated with fans; and air spray holes are formed in the convection tubes. The glass toughening furnace adopts the heat-resistance stainless steel radiant tubes to replace the traditional radiant panels, so that a surface area of a radiant surface is increased by about 60%, and a heat transfer speed is high. The fans supply air to the convection tubes, so that deformation of glass is controlled effectively.
Description
Technical field
The present invention relates to stove and accessory, particularly relate to a kind of glass tempering furnace.
Background technology
At present, thickness is the common ultra-thin glass of 1.8-2.2mm, and intensity is very low, and in processing or handling process, as easy as rolling off a log generation is broken.People can only reduce the making area of glass, and to reduce the broken probability of glass, this just causes the scope of its use more narrow.Trace it to its cause, it mainly is the glass tempering furnace that uses now, only be suitable for processing the glass of 3-19mm thickness, there is following problem in the glass that is 2mm with this annealing furnace production thickness: the first, the planeness of glass does not reach requirement≤3 ‰, especially 1.6-2.5 square metre large-area glass of GB.The second, the one side of glass contact live rollers, and since the distortion that glass produces in heat-processed, the local contact of glass roller-way overlong time, and produce fraying of surface, form white mist.Three, because heating inhomogeneous and enhancement method is improper, the glass surface unbalanced stress after make strengthening is even, is difficult for cutting again.
The reason that produces these problems mainly is: the first, have the type of heating of glass tempering furnace and the ultra-thin glass that control method is not suitable for 1.8-2.2mm thickness now.The radiation heating mode is mainly used in traditional heating, and glass enters in the process furnace with normal temperature, and the bottom of glass is with radiation, transmits heat form acquisition heat; But the stove that has does not have the top heat form; The stove that has is stove silk or radial lamella direct radiation glass.Change conveniently for the stove silk, radial lamella is divided into some unit by the stove silk,
There is bigger gap between each radial lamella, can causes the radiation of glass inhomogeneous; And the temperature between each radial lamella is not transmitted.Glass is inhomogeneous owing to being heated, and can produce distortion, and the distortion of glass has just caused local and ceramic roller friction, and several local point of contact bear weight of glass, thereby the part that has produced glass frays, and produces " white mist ", and also has bigger distortion.So mostly the thin glass of the processing of general annealing furnace is that thickness is the thin glass of 3-5mm, it is very big that " white mist " appears at thin probability on glass, and thickness to be the ultra-thin glass of 1.8-2.2mm can't process in this stove at all.
The second, the convective heating on top arranges for eliminating " white mist ", but the employing of annealing furnace convection current now is pressurized air, and compressed-air actuated convection current is high pressure, and is few to flow point; Can cause between excessive, adjacent two gas orifices of convection current dot center pressure and the too small phenomenon of pressure between two row's convection tubess, can make thin glass heats initial deformation more serious, so that the glass of 1.8-2.2mm can't use.
Based on the problems referred to above, the simple glass annealing furnace is difficult to the ultra-thin glass of 1.8-2.2mm is carried out efficient hardening, therefore, urgent need is invented out a kind of glass tempering furnace, effectively solve the problem of the glass of 1.8-2.2mm thickness being carried out tempering, fill up this technical blank, and this equipment can be strengthened still to the glass of general thickness.
Summary of the invention
The purpose of this invention is to provide a kind of glass tempering furnace, in order to solve the defective of above-mentioned prior art.
In order to achieve the above object, technical scheme provided by the present invention is: a kind of glass tempering furnace, and it comprises body of heater, live rollers, stove silk, radial lamella; Described body of heater comprises upper furnace and lower hearth, described live rollers device is between upper furnace and lower hearth, and described stove silk installs respectively in upper furnace and lower hearth, and the stove silk is towards the ceramic roller setting, described radial lamella device and places stove silk top in lower hearth; It also comprises radiator tube group and convection tubes, described radiator tube group is lifted in the upper furnace, and be arranged on the below of stove silk, the radiator tube group is joined side by side by some radiator tubes and is formed, described radiator tube is an one-piece construction, and laterally be lifted in the upper furnace, the diameter of radiator tube is 30-40mm, and wall thickness is 3-5mm; Described convection tubes is provided with a plurality of, and be lifted on the below of radiator tube side by side, the inlet end of convection tubes is connected with blower fan, the diameter of convection tubes is 20-30mm, the convection tubes spacing is 260-300mm: convection tubes is provided with some gas orifices, the diameter of described gas orifice is 2-3mm, is 45-55mm along the spacing of gas orifice on the convection tubes length direction.
Further, described live rollers comprises roller-way support and some ceramic roll shafts, and described ceramic roll shaft is set up on the roller-way support.
Further, described radiator tube adopts the heat-resistance stainless steel pipe to make.
Further, the diameter of described radiator tube is 35mm, and wall thickness is 4mm.
Further, the diameter of described ceramic roll shaft is 55mm, and the spacing of ceramic roll shaft is 110mm.
Further, the diameter of described convection tubes is 25mm, and the spacing of convection tubes is 280mm.
Further, the spacing along gas orifice on the convection tubes length direction is 50mm.
Adopt technique scheme, technique effect of the present invention has:
1, annealing furnace of the present invention adopts the heat-resistance stainless steel radiator tube, substitute traditional radial lamella, place the bottom of upper furnace stove silk, some radiator tubes that parallel join side by side and form, and form corrugated radiating surface, during radiation, formed a cross one another radiating surface, than common radial lamella, the surface-area of radiator tube has increased about 60%, and heat passage speed is fast; Radiator tube is accepted the stove silk heating of different units, and radiator tube is heated evenly, and has effectively reduced all around temperature difference in the stove, and heats is good.
2, the present invention changes the mode of top convective heating, rational convection intensity is set and to flow area, realizes that the top and the bottom of glass are evenly heated, and avoids glass to produce bigger distortion.What the present invention adopted is that burner hearth adds the blower fan convection type, be different from compressed-air actuated to streamed, to flowing pressure by 3-5kg/cm
2Drop to 2000-4000pa/cm
2, convection current air outlet opening area is increased to 500 square millimeters/every square metre by 25 square millimeters/every square metre.The spacing of equilibration tube changes 280 millimeters into by 600mm, has effectively controlled the distortion of glass.
3, select rational ceramic roll shaft diameter and spacing; The diameter of roll shaft is the 50-60 millimeter, and the spacing of roller-way is the 95-115 millimeter, above-mentioned rational diameter and spacing, and it is more even that glass is heated, and reduces the friction problem of glass and ceramic roll shaft, effectively reduced the generation of " white mist ".
4, utilize the glass surface stress of the 1.8-2.2mm thickness after this equipment is strengthened even, can cut again, and glass planeness≤3 ‰ of strengthening 1.8-2.2mm thickness have later reached the requirement of GB.
Description of drawings
Fig. 1 is the sectional view of structure of the present invention;
Fig. 2 is the side-view of structure of the present invention;
Fig. 3 is the structural representation of existing glass tempering furnace;
Wherein: 1, body of heater, 2, live rollers, 3, the stove silk, 4, radial lamella, 5, the radiator tube group, 6, convection tubes, 11, upper furnace, 12, lower hearth, 21, ceramic roll shaft, 51, radiator tube, 61, gas orifice.
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As depicted in figs. 1 and 2, a kind of glass tempering furnace, it comprises body of heater 1, live rollers 2, stove silk 3, radial lamella 4; Body of heater 1 comprises upper furnace 11 and lower hearth 12, and live rollers 2 comprises roller-way support and some ceramic roll shafts 21, and ceramic roll shaft 21 is set up on the roller-way support, and the diameter of ceramic roll shaft 21 is 50-60mm, is preferably 55mm; The spacing of pottery roll shaft 21 is 95-115mm, is preferably 110mm.Adopt diameter and the spacing of above-mentioned rational ceramic roll shaft 21, make the heat transfer rate of live rollers 2 moderate, reduced the friction problem of glass and ceramic roll shaft 21.Live rollers 2 device is between upper furnace 11 and lower hearth 12, and stove silk 3 installs respectively in upper furnace 11 and lower hearth 12, and stove silk 3 arranges towards live rollers 2, and radial lamella 4 devices and place stove silk 3 tops in lower hearth 12.
Glass tempering furnace of the present invention also comprises radiator tube group 5 and convection tubes 6, radiator tube group 5 is lifted in the upper furnace 11, and be arranged on the below of stove silk 3, radiator tube group 5 is joined side by side by some radiator tubes that parallel 51 and is formed, radiator tube 51 is an one-piece construction, and adopt the heat-resistance stainless steel pipe to make, have high temperature resistant, stable height, thermal conduction and the strong characteristics of radiation capacity.The radiating surface that some radiator tubes 51 are formed is the waviness radiating surface, compare with the existing radial lamella that adopts, swept area of the present invention has increased nearly 60%, improved swept area greatly, heat passage speed is faster, the diameter of radiator tube 51 is 30-40mm, is preferably 35mm, and wall thickness is 3-5mm, be preferably 4mm, like this, when radiator tube 51 was subjected to each stove silk radiation of top, being heated of radiator tube integral body can be very even, accordingly, radiator tube 51 adopts rational length, diameter and wall thickness, more even to the radiation heating of glass, avoided the thin glass of 1.8-2.2mm to produce distortion because of local heating.Convection tubes 6 is lifted on the below of radiator tube 51, the diameter of convection tubes 6 is 20-30mm, be preferably 25mm, the spacing of convection tubes 6 is 260-300mm, is preferably 280mm, the inlet end of convection tubes 6 is communicated with blower fan, convection tubes 6 is provided with gas orifice 61, and gas orifice 61 arranges towards live rollers 2, and the diameter of gas orifice 61 is made as 2-3mm, spacing along gas orifice 61 on convection tubes 61 length directions is 45-55mm, is preferably 50mm; Air feeder of the present invention replaces common gas-holder with blower fan, change the form of top convection current simultaneously, changed near working pressure and many forms to discharge orifice by the few form to discharge orifice of high pressure, to rolling up of discharge orifice, avoided compressed-air actuated inequality to flow, blower fan adopts the frequency conversion procedure auto-control, comes rate of heating and the equalization temperature on reinforced glass top with this.
As shown in Figure 3, the structural representation of existing glass tempering furnace, adopt radial lamella to carry out thermal conduction in the upper furnace 11, it is convenient for the stove silk is changed, the radial lamella 4 of casting is divided into some unit by the stove silk, have bigger gap between the adjacent two stove silks, this just causes the radiation of 4 pairs of glass of radial lamella inhomogeneous; And, the position difference of the thermocouple that each stove silk is subjected to and the influence of change over signal difference, the temperature of stove silk has nothing in common with each other, temperature between each stove silk can not be transmitted mutually, and, very easily produce distortion 1.8-2.2mm the glass of thickness is heated when inhomogeneous, this has just caused the thick glass tempering difficulty of 1.8-2.2mm very big.
It should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (7)
1. glass tempering furnace, it comprises body of heater (1), live rollers (2), stove silk (3), radial lamella (4); It is characterized in that: described body of heater (1) comprises upper furnace (11) and lower hearth (12), described live rollers (2) device is between upper furnace (11) and lower hearth (12), described stove silk (3) installs respectively in upper furnace (11) and lower hearth (12), described radial lamella (4) installs in lower hearth (12), and places stove silk (3) top; It also comprises radiator tube group (5) and convection tubes (6), described radiator tube group (5) is lifted in the upper furnace (11), and be arranged on the below of stove silk (3), radiator tube group (5) is joined side by side by some radiator tubes (51) and is formed, described radiator tube (51) is an one-piece construction, and laterally be lifted in the upper furnace (11), the diameter of radiator tube (51) is 30-40mm, and wall thickness is 3-5mm; Described convection tubes (6) is provided with a plurality of, and is lifted on the below of radiator tube (51) side by side, and the inlet end of convection tubes (6) is connected with blower fan, and the diameter of convection tubes (6) is 20-30mm, and the spacing of convection tubes (6) is 260-300mm; Convection tubes (6) is provided with some gas orifices (61), and the diameter of described gas orifice (61) is 2-3mm, is 45-55mm along the spacing of gas orifice (61) on convection tubes (6) length direction.
2. glass tempering furnace according to claim 1, it is characterized in that: described live rollers (2) comprises roller-way support and some ceramic roll shafts (21), and described ceramic roll shaft (21) is set up on the roller-way support.
3. glass tempering furnace according to claim 1 is characterized in that: described radiator tube (51) adopts the heat-resistance stainless steel pipe to make.
4. according to claim 1 or 3 described glass tempering furnaces, it is characterized in that: the diameter of described radiator tube (51) is 35mm, and wall thickness is 4mm.
5. glass tempering furnace according to claim 2, it is characterized in that: the diameter of described ceramic roll shaft (21) is 55mm, the spacing of ceramic roll shaft (21) is 110mm.
6. glass tempering furnace according to claim 1, it is characterized in that: the diameter of described convection tubes (6) is 25mm, the spacing of convection tubes (6) is 280mm.
7. glass tempering furnace according to claim 1, it is characterized in that: the spacing along gas orifice (61) on convection tubes (6) length direction is 50mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310261067.6A CN103274586B (en) | 2013-06-27 | 2013-06-27 | Glass tempering furnace |
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| CN201310261067.6A CN103274586B (en) | 2013-06-27 | 2013-06-27 | Glass tempering furnace |
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| CN103274586A true CN103274586A (en) | 2013-09-04 |
| CN103274586B CN103274586B (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236718A (en) * | 2015-08-23 | 2016-01-13 | 洛阳新兆电子有限公司 | Heating process of heating section of thermal-forming furnace for mobile phone 3D curve-surface glass cover plate |
| CN110844280A (en) * | 2019-11-22 | 2020-02-28 | 江苏中美达制冷科技有限公司 | Heating preservation box |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640492B (en) * | 2018-07-25 | 2019-11-29 | 温州美富达工艺品有限公司 | A kind of glass tempering furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2039819U (en) * | 1988-09-12 | 1989-06-21 | 山东淄博色釉料厂 | Tubes assembled plate far infra-red radiation heater |
| WO2007107791A1 (en) * | 2006-03-20 | 2007-09-27 | Westcrowns Contracting Services Limited | Tempering apparatus |
| CN101844862A (en) * | 2009-03-25 | 2010-09-29 | 洛阳北方玻璃技术股份有限公司 | Glass toughening furnace based on net array type heating |
| CN101848875A (en) * | 2007-11-08 | 2010-09-29 | 单玻璃工程公司 | Method of heating a glass panel and apparatus applying the method |
| CN101905948A (en) * | 2010-08-06 | 2010-12-08 | 杭州精工机械有限公司 | Radiation heating furnace with external circulating device |
| CN201817377U (en) * | 2010-02-10 | 2011-05-04 | 陈杰 | Quick convection heating furnace |
-
2013
- 2013-06-27 CN CN201310261067.6A patent/CN103274586B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2039819U (en) * | 1988-09-12 | 1989-06-21 | 山东淄博色釉料厂 | Tubes assembled plate far infra-red radiation heater |
| WO2007107791A1 (en) * | 2006-03-20 | 2007-09-27 | Westcrowns Contracting Services Limited | Tempering apparatus |
| CN101848875A (en) * | 2007-11-08 | 2010-09-29 | 单玻璃工程公司 | Method of heating a glass panel and apparatus applying the method |
| CN101844862A (en) * | 2009-03-25 | 2010-09-29 | 洛阳北方玻璃技术股份有限公司 | Glass toughening furnace based on net array type heating |
| CN201817377U (en) * | 2010-02-10 | 2011-05-04 | 陈杰 | Quick convection heating furnace |
| CN101905948A (en) * | 2010-08-06 | 2010-12-08 | 杭州精工机械有限公司 | Radiation heating furnace with external circulating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236718A (en) * | 2015-08-23 | 2016-01-13 | 洛阳新兆电子有限公司 | Heating process of heating section of thermal-forming furnace for mobile phone 3D curve-surface glass cover plate |
| CN110844280A (en) * | 2019-11-22 | 2020-02-28 | 江苏中美达制冷科技有限公司 | Heating preservation box |
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| CN103274586B (en) | 2016-01-20 |
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