CN103466926A - Energy-saving tempered glass homogenizing furnace - Google Patents
Energy-saving tempered glass homogenizing furnace Download PDFInfo
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- CN103466926A CN103466926A CN2013103620694A CN201310362069A CN103466926A CN 103466926 A CN103466926 A CN 103466926A CN 2013103620694 A CN2013103620694 A CN 2013103620694A CN 201310362069 A CN201310362069 A CN 201310362069A CN 103466926 A CN103466926 A CN 103466926A
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Abstract
The invention relates to an energy-saving tempered glass homogenizing furnace, and belongs to the technical field of glass deep-processing. The energy-saving tempered glass homogenizing furnace comprises a furnace body; an air inlet is formed in the lower end of the side wall of the furnace body, and is connected to a hot air inlet communicated with an exhaust port of an annealing kiln and a cold air inlet for introducing cold air through an air inlet pipeline; a hot air non-return valve and a hot air regulating valve are arranged at the hot air inlet; a cold air regulating valve is arranged at the cold air inlet; an air intake induced draft fan is arranged in the air inlet pipeline; the upper end of the furnace body is communicated with one end of a circulated air system, and the other end of the circulated air system is communicated with the air inlet pipeline. According to the tempered glass homogenizing furnace, waste heat generated by a glass annealing kiln is used for performing homogenizing processing on glass, and the problem that the temperature of the waste heat generated by the glass annealing kiln is relatively large in fluctuation is solved; through improvement of a heating cycle manner, the furnace body structure and a control manner, relatively high requirements of temperature control precision on a glass homogenizing processing technology are met.
Description
Technical field
The invention belongs to glass deep process technology field, be specifically related to a kind of energy-saving tempering glass homogeneous furnace.
Background technology
The toughened glass self-explosion reason is to sneak into sulphur and nickel impurity in glass manufacturing process, at high temperature generates nickelous sulfide.Nickelous sulfide has two kinds of crystallizations, and during high temperature, (t > 380 ℃) is the β phase while being α phase, low temperature.When tempering, due to cooling rapidly, α has little time to be transformed into the β phase mutually.In use, the metastable α of normal temperature slowly is transformed into stable β phase mutually, follows approximately 4% volumetric expansion just may cause toughened glass self-explosion.
The effect of homogeneous furnace is by glass second-heating to 270～285 ℃ and keeps for some time, makes nickelous sulfide α thoroughly change mutually the β phase of cryostatic stabilization into, can greatly reduce the self-destruction rate of toughened glass, improves the reliability of product.
At present there is following problem in toughened glass homogenizing furnace: the one, because will and keep about 2 hours glass second-heating to 270～285 ℃, existing homogeneous furnace adopts electricity, Sweet natural gas, fuel oil etc. as thermal source usually, the heating energy consumption is very large, production cost is very high, in aluminium industry processed, have the industrial exhaust heat of employing aluminum products to be carried out to the application of homogenization treatment, but temperature control precision is not high; The 2nd, homogeneous body of heater inner transverse excessive temperature differentials in the heat temperature raising process, the fluctuation of constant temperature phase temperature is excessive, and because temperature control precision is poor, easily the interior temperature of body of heater that makes out of control surpasses 300 ℃, causes the toughened glass glass annealing, produces waste product.
Summary of the invention
Purpose of the present invention is exactly the defect for prior art, and a kind of energy-saving tempering glass homogeneous furnace is provided.Utilize the thermal source of industrial exhaust heat as homogeneous furnace, to solve the high problem of energy consumption.
The technical solution used in the present invention is: a kind of energy-saving tempering glass homogeneous furnace, it comprises body of heater, described sidewall of the furnace body lower end has blast inlet, described blast inlet is connected with the hot-wind inlet be communicated with the annealing furnace exhaust outlet and the cold air inlet that cold wind is introduced by intake stack, described hot-wind inlet place is provided with hot blast check valve and hot blast variable valve, and described cold air inlet place is provided with cold air adjusting valve; Be provided with the air intake induced draft fan in described intake stack; Described body of heater upper end and wind circulating system one end are communicated with, and the described wind circulating system the other end is communicated with described intake stack.
Further preferred structure, described wind circulating system comprises the recirculating air pipeline, the circulation induced draft fan that is arranged on recirculating air pipeline and body of heater junction that are communicated with the body of heater upper end, is arranged on the return valve of recirculating air pipeline and intake stack junction and is arranged on the decompression control valve on the recirculating air pipeline.Decompression control valve is pneumatic adjusting valve, can change and carry out corresponding regulation according to the body of heater internal pressure, controls the body of heater internal pressure stable.
Further preferred structure, described blast inlet comprise the air collecting box that is connected with intake stack, with air collecting box, be connected lead to the some branches intake stack in body of heater and be arranged on the transverse temperature variable valve in branch's intake stack.Air collecting box is guaranteed the consistence of gas temperature, makes each branch's intake stack that the same blast be arranged, and the transverse temperature variable valve further improves accuracy of temperature control, reduces the disturbance of inlet temperature to system.
Further preferred structure, form big top and small bottom trapezoidal heating chamber in described body of heater, between described trapezoidal heating chamber inwall and furnace body outer wall, be provided with thermal insulation layer.Can guarantee that air-flow flows to upper end from glass lower end in body of heater uniformly, make the glass each several part can be by homogeneous heating and cooling.
Further preferred structure, be provided with the A type glass supporter for placing glass in described trapezoidal heating chamber.
Further preferred structure, described blast inlet in the vertical direction is lower than described A type glass supporter.To guarantee that air-flow is all from the glass bottom to cocycle.
Further preferred structure, described blast inlet leads to the bore area that the interior side bore area of body of heater is less than a side of leading to intake stack.
Further preferred structure, described body of heater upper end has the circulating air opening be communicated with described wind circulating system.
Further preferred structure, described intake stack comprises that two portions pipeline passed into from both sides, sidewall of the furnace body lower end respectively in body of heater forms.
The waste heat that the present invention utilizes lear to produce carries out homogenization treatment to glass, there is the problem of larger fluctuation in the waste heat supply temperature that has simultaneously solved the lear generation, by improving heating cycle mode, furnace binding and control mode, reached the requirement of the accuracy of temperature control that the glass homogenization treatment is higher.
The accompanying drawing explanation
Fig. 1 structure vertical view of the present invention;
Fig. 2 structure left view of the present invention;
Fig. 3 is the body of heater front view.
In figure, 101-hot-wind inlet; The import of 102-cold wind; 103-hot blast variable valve; 104-cold air adjusting valve; 105-hot blast check valve; 106-air intake induced draft fan; 107-intake stack; 201-circulation induced draft fan; 202-recirculating air pipeline; 203-decompression control valve; 204-return valve; 301-body of heater; 302-blast inlet; 303-thermal insulation layer; 304-recycle air port; 305-A type glass supporter; 306-glass; 307-heating chamber; 308-air collecting box; 309-transverse temperature variable valve; 310-branch intake stack; 401-temperature-detecting device; 402-pressure-detecting device.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, be convenient to be well understood to the present invention, but they do not form restriction to the present invention.
As shown in Fig. 1-Fig. 3, the present invention includes body of heater 301, described body of heater 301 side wall lower ends both sides have blast inlet 302, described blast inlet 302 is connected with the hot-wind inlet 101 be communicated with the annealing furnace exhaust outlet and the cold air inlet 102 that cold wind is introduced by intake stack 107, described hot-wind inlet 101 places are provided with hot blast check valve 105 and hot blast variable valve 103, and described cold air inlet 102 places are provided with cold air adjusting valve 104; Be provided with air intake induced draft fan 106 in described intake stack 107; Described body of heater 301 upper ends and wind circulating system one end are communicated with, and the described wind circulating system the other end is communicated with described intake stack 107.
Described wind circulating system comprises the recirculating air pipeline 202 that is communicated with body of heater 301 upper ends, be arranged on recirculating air pipeline 202 and body of heater 301 junctions circulation induced draft fan 201, be arranged on the return valve 204 of recirculating air pipeline 202 and intake stack 107 junctions and be arranged on the decompression control valve 203 on recirculating air pipeline 202.Described hot blast variable valve 103, cold air adjusting valve 104, return valve 204 are pneumatic adjusting valve, using pressurized air as power, by standard signal, are controlled, and can to air flow quantity, be controlled quickly and accurately; Air intake induced draft fan 106, circulation induced draft fan 201 adopt Frequency Converter Control, accurately control compressor flow.Wherein, described return valve 204 is butterfly valve.
Described blast inlet 302 comprise the air collecting box 308 that is connected with intake stack 107, with air collecting box 308, be connected lead to the some branches intake stack 310 in body of heater 301 and be arranged on the transverse temperature variable valve 309 in branch's intake stack 310.
Described hot blast check valve 105, hot blast variable valve 103, cold air adjusting valve 104, return valve 204, decompression control valve 203 and transverse temperature variable valve 309 are electrically connected with respectively control unit.Control and can quantitatively regulate total air output by ECU, according to setting processing parameter, control cold wind and regulate the state of 104 valves, hot blast variable valve 103, decompression control valve 203 apertures and backflow trip valve, and then regulate the wind-warm syndrome entered in body of heater 301, reach heating and cooling function.
Be provided with temperature-detecting device 401 and pressure-detecting device 402 in described body of heater 301, described temperature-detecting device 401 and pressure-detecting device 402 are electrically connected to described control unit respectively.Detect feedback body of heater internal space temperature by the temperature-detecting device be electrically connected to described control unit 401 in body of heater 301, described temperature-detecting device 401 is arranged on each branch's intake stack 310 place of blast inlet 302, intake air temperature to each branch's intake stack 310 is controlled separately, so that the interior temperature equalisation of body of heater 301 changes; By the pressure-detecting device 402 be electrically connected to described control unit in body of heater 301, control decompression control valve 203, regulate the ratio of air intake and recirculating air, further improve accuracy of temperature control.Described temperature-detecting device 401 is temperature sensor, and temperature sensor is for detection of the interior horizontal each point temperature of body of heater 301, the control of the transverse temperature variable valve 309 gone out for each branch's intake stack 310 blast inlets, guarantee in body of heater transverse temperature poor≤3 ℃; The mean value of point for measuring temperature, for controlling the control of cold wind, hot blast variable valve, is controlled inlet temperature and is met the control requirement.Described pressure-detecting device 402 is differential pressure transmitter, detects the pressure in body of heater 301.Force value, for controlling decompression control valve, is controlled body of heater 301 internal pressures and is kept stable.
The trapezoidal heating chamber 307 that the interior formation of described body of heater 301 is big top and small bottom, be provided with thermal insulation layer 303 between described trapezoidal heating chamber 307 inwalls and body of heater 301 outer walls, can guarantee that air-flow flows from the interior glass of body of heater 301 lower end to upper end uniformly, make the glass each several part can be by homogeneous heating and cooling; Be provided with the A type glass supporter 305 for placing glass 306 in described trapezoidal heating chamber 307, described blast inlet 302 in the vertical directions are lower than described A type glass supporter 305; Described blast inlet 302 leads to the bore area that body of heater 301 interior side bore areas are less than a side of leading to intake stack 107.In the present embodiment, trapezoidal heating chamber 307 adopts the angle parallel with A type glass supporter 305, has reduced wasted space, can guarantee that air-flow is mobile from glass 306 lower ends to upper end uniformly simultaneously, makes glass 306 each several parts can be by homogeneous heating and cooling.
Described body of heater 301 upper ends have the circulating air opening 304 be communicated with described wind circulating system, for the interior gas of body of heater 301 is circulated.
Workflow of the present invention: draw the hot blast process hot blast variable valve 103 from lear A district, cold wind is regulated 104 valves by cold wind and is entered the homogeneous furnace system, control unit is controlled cold air adjusting valve 104, hot blast variable valve 103 simultaneously, be mixed into temperature required gas, again with after recirculating air in wind circulating system from body of heater 301 is mixed, through air intake induced draft fan 106, make a gift to someone in body of heater 301, in figure, direction shown in arrow is hot blast, cold wind and the recirculating air direction that flows.
When glass is admitted to homogeneous furnace and starts homogeneous, control unit, according to processing parameter and in situ temperature detected value, is controlled cold air adjusting valve 104, hot blast variable valve 103, when system has just been started working, and cold air adjusting valve 104 aperture maximums, hot blast variable valve 103 minimums; Control unit, according to the Temperature Feedback of temperature-detecting device 401, reduces cold air adjusting valve 104 apertures gradually, increases hot blast variable valve 103 apertures, progressively improves inlet temperature; According to the detection of pressure-detecting device 402, control unit is regulated decompression control valve 203, so that body of heater 301 internal pressures keep the force value of setting.
After the interior temperature of body of heater 301 reaches set(ting)value, system keeps homo(io)thermism in body of heater to start insulation.In heating and insulating process, return valve 204 is full-gear.
After reaching soaking time, return valve 204 is closed, and control unit provides controls cold air adjusting valve 104 and hot blast variable valve 103, temperature lowering curve according to setting, progressively reduce hot blast variable valve 103 apertures, increases cold air adjusting valve 104 apertures, to reduce inlet temperature, cooled glass.After the interior glass temperature of body of heater 301 is lower than 70 ℃, the control unit release, allow to open fire door, and homogenizing process finishes.
The content that this specification sheets is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. an energy-saving tempering glass homogeneous furnace, it comprises body of heater, it is characterized in that: described sidewall of the furnace body lower end has blast inlet, described blast inlet is connected with the hot-wind inlet be communicated with the annealing furnace exhaust outlet and the cold air inlet that cold wind is introduced by intake stack, described hot-wind inlet place is provided with hot blast check valve and hot blast variable valve, and described cold air inlet place is provided with cold air adjusting valve; Be provided with the air intake induced draft fan in described intake stack; Described body of heater upper end and wind circulating system one end are communicated with, and the described wind circulating system the other end is communicated with described intake stack.
2. energy-saving tempering glass homogeneous furnace according to claim 1 is characterized in that: described wind circulating system comprises the recirculating air pipeline, the circulation induced draft fan that is arranged on recirculating air pipeline and body of heater junction that are communicated with the body of heater upper end, is arranged on the return valve of recirculating air pipeline and intake stack junction and is arranged on the decompression control valve on the recirculating air pipeline.
3. energy-saving tempering glass homogeneous furnace according to claim 2 is characterized in that: described blast inlet comprise the air collecting box that is connected with intake stack, with air collecting box, be connected lead to the some branches intake stack in body of heater and be arranged on the transverse temperature variable valve in branch's intake stack.
4. energy-saving tempering glass homogeneous furnace according to claim 3, is characterized in that: form big top and small bottom trapezoidal heating chamber in described body of heater, between described trapezoidal heating chamber inwall and furnace body outer wall, be provided with thermal insulation layer.
5. energy-saving tempering glass homogeneous furnace according to claim 4, is characterized in that: be provided with the A type glass supporter for placing glass in described trapezoidal heating chamber.
6. energy-saving tempering glass homogeneous furnace according to claim 5, it is characterized in that: described blast inlet in the vertical direction is lower than described A type glass supporter.
7. energy-saving tempering glass homogeneous furnace according to claim 6 is characterized in that: described blast inlet leads to the bore area that a side bore area in body of heater is less than a side of leading to intake stack.
8. energy-saving tempering glass homogeneous furnace according to claim 1 and 2, it is characterized in that: described body of heater upper end has the circulating air opening be communicated with described wind circulating system.
9. energy-saving tempering glass homogeneous furnace according to claim 1 is characterized in that: described intake stack comprises that two portions pipeline passed into from both sides, sidewall of the furnace body lower end respectively in body of heater forms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103620694A CN103466926A (en) | 2013-08-19 | 2013-08-19 | Energy-saving tempered glass homogenizing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103620694A CN103466926A (en) | 2013-08-19 | 2013-08-19 | Energy-saving tempered glass homogenizing furnace |
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| CN103466926A true CN103466926A (en) | 2013-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328915A (en) * | 2018-04-10 | 2018-07-27 | 洛阳托普热能技术有限公司 | A kind of traverse cycle formula toughened glass homogenizing furnace |
| CN112939433A (en) * | 2021-04-13 | 2021-06-11 | 齐伟 | Toughened glass preparation process |
| CN114230158A (en) * | 2021-11-30 | 2022-03-25 | 中国建材国际工程集团有限公司 | Annealing kiln waste heat utilization system of photovoltaic calendering glass production line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2787657Y (en) * | 2004-09-13 | 2006-06-14 | 河南安彩高科股份有限公司 | Thermostatic control system for combustion-supporting wind of kinescope glass bulb furnace |
| CN201746447U (en) * | 2010-07-15 | 2011-02-16 | 深圳市汉东玻璃机械有限公司 | Toughened glass homogeneous furnace |
| CN102092926A (en) * | 2010-12-30 | 2011-06-15 | 天津南玻节能玻璃有限公司 | Toughened grass homogenizing furnace |
-
2013
- 2013-08-19 CN CN2013103620694A patent/CN103466926A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2787657Y (en) * | 2004-09-13 | 2006-06-14 | 河南安彩高科股份有限公司 | Thermostatic control system for combustion-supporting wind of kinescope glass bulb furnace |
| CN201746447U (en) * | 2010-07-15 | 2011-02-16 | 深圳市汉东玻璃机械有限公司 | Toughened glass homogeneous furnace |
| CN102092926A (en) * | 2010-12-30 | 2011-06-15 | 天津南玻节能玻璃有限公司 | Toughened grass homogenizing furnace |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328915A (en) * | 2018-04-10 | 2018-07-27 | 洛阳托普热能技术有限公司 | A kind of traverse cycle formula toughened glass homogenizing furnace |
| CN108328915B (en) * | 2018-04-10 | 2024-04-19 | 洛阳托普热能技术有限公司 | Transverse circulating toughened glass homogenizing furnace |
| CN112939433A (en) * | 2021-04-13 | 2021-06-11 | 齐伟 | Toughened glass preparation process |
| CN112939433B (en) * | 2021-04-13 | 2022-10-18 | 新李英玻璃工艺(深圳)有限公司 | Toughened glass preparation process |
| CN114230158A (en) * | 2021-11-30 | 2022-03-25 | 中国建材国际工程集团有限公司 | Annealing kiln waste heat utilization system of photovoltaic calendering glass production line |
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Application publication date: 20131225 |