CN104296159B - Device and method for adjusting sintering atmospheres - Google Patents
Device and method for adjusting sintering atmospheres Download PDFInfo
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- CN104296159B CN104296159B CN201410527439.XA CN201410527439A CN104296159B CN 104296159 B CN104296159 B CN 104296159B CN 201410527439 A CN201410527439 A CN 201410527439A CN 104296159 B CN104296159 B CN 104296159B
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Abstract
The invention provides a device and a method for adjusting sintering atmospheres. When only one of an oxidizing atmosphere, a neutral atmosphere and a reducing atmosphere is needed in the whole sintering process of a product, the ratio of air to a fuel gas is accurately adjusted by use of a proportional valve, after the fuel gas goes into a kiln, the fuel gas is combusted sufficient to establish the desired atmosphere for sintering the product, and in the sintering process, due to the stability of the proportional valve, unstable introduction proportion of the air or the fuel gas can be avoided so that the sintering of the product cannot be affected; when two or three of the oxidizing atmosphere, the neutral atmosphere and the reducing atmosphere are needed or the three atmospheres need to be alternated in the sintering process of the product, firstly, the ratio of the air to the fuel gas is accurately adjusted by use of the proportional valve, the mixed gas is introduced into the kiln and then sufficiently combusted to reach the oxidizing atmosphere, and then the throughput of the fuel gas is adjusted by use of the proportional valve so that the air and the fuel gas go into the kiln in a desired ratio to achieve the sintering atmosphere needed by the product until the sintering of the product is completed. The device and the method for adjusting the sintering atmospheres has the advantages of simple structure and convenient operations.
Description
Technical field
The present invention relates to a kind of adjusting means is and in particular to a kind of device and method of regulation firing atmosphere.
Background technology
Nowadays, firing firing of product is ceramic body to be positioned in kiln fire, and kiln generally comprises kiln body, combustion
Burning system, control system etc., and in combustion system, air and gas proportion input passing ratio valve to control, combustion system is selected
Proportioning valve can ensure that air is effectively adjusted according to set proportion with combustion gas, and it not only can ensure the automatic control of temperature
System, and also ensure that stable the automatically controlling of kiln atmosphere.Under normal circumstances, air-fuel ratio (i.e. air and the fuel of proportioning valve
Input ratio) determine after, be difficult to air-fuel ratio is adjusted change.
In actual production process, fire product and adopt which kind of firing atmosphere in sintering procedure, basis can burn till product
In the composition of raw material and sintering procedure in formula, the physical reaction situation in each stage is determining.If firing product in sintering procedure
When only needing a kind of firing atmosphere, kiln combustion system adoption rate valve fully achieves requirement.If but firing product and exist
If needing in sintering procedure firing atmosphere is made a change, being difficult to adjust and change it is impossible to burning till because of proportioning valve air-fuel ratio
Atmosphere is adjusted changing, and this will bring a lot of inconvenience to sintering procedure, affects firing of product.
Content of the invention
Present invention is primarily targeted at solution the problems referred to above, provide one kind can adjust change in sintering procedure and burn till gas
The method of atmosphere.
A kind of method of regulation firing atmosphere that the present invention provides, using a kind of device adjusting firing atmosphere, this device
Including:Gas pipeline (10), air line (30), bypass duct (20), described gas pipeline (10) along combustion gas input direction according to
Secondary be provided with electromagnetic valve (11), proportioning valve (12), branch road hand-operated valve (13), described air line (30) and proportioning valve (12) pass through to lead
Pressure pipe (31) connects, and described bypass duct (20) on described gas pipeline (10), fix by one end of this bypass duct (20)
Between electromagnetic valve (11) and proportioning valve (12), the other end is fixed between described proportioning valve (12) and branch road hand-operated valve (13),
And described bypass duct (20) is provided with regulating valve (21) it is characterised in that the method comprises the following steps:S10:According to product
Firing atmosphere required for the physical reaction of each stage forecast judges in the composition of raw material and sintering procedure in formula, if judge knot
When fruit is to need oxidizing atmosphere or one of neutral atmosphere or reducing atmosphere all the time in work process, then enter step S20, if
Judged result is to need two or three of oxidizing atmosphere, neutral atmosphere, reducing atmosphere or when it replaces in work process, then
Enter step S30;
S20:According to judged result setting ratio valve air and combustion gas passing ratio, for required firing atmosphere, now ratio
Valve is closed with regulating valve, and described air and Natural Gas ratio are 7:1~13:1;
S21:After proportioning valve is set as required firing atmosphere, it is first turned on kiln fan on and off switch, then open branch road
Hand-operated valve, air pressure is imported proportioning valve by connecting pipe, and proportioning valve is opened in the presence of air pressure, opens electromagnetism afterwards
Valve, now air and combustion gas is entered in kiln by burner with setting ratio, until product is fired and completed, in this sintering procedure
The coefficient of excess air of oxidizing atmosphere is 1.05~1.15;
S22:After the completion of product is fired, it is first shut off kiln fan on and off switch, is then shut off electromagnetic valve, electromagnetic valve closes
After closing, close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve be not free
Close in the presence of atmospheric pressure, end-of-job;
S30:Be firing atmosphere needed for first according to judged result setting ratio valve air and combustion gas passing ratio, now than
Example valve is closed with regulating valve, is set as, after required first firing atmosphere, opening kiln fan power supply and opening after proportioning valve
Close, air pressure is imported proportioning valve by connecting pipe, and proportioning valve is opened in the presence of air pressure, then opens electromagnetic valve, this
When air and combustion gas entered in kiln by gas pipeline with the first setting ratio, complete up to the first firing atmosphere stage, institute
Stating air and Natural Gas ratio is 7:1~13:1, in this sintering procedure, the coefficient of excess air of oxidizing atmosphere is 1.05
~1.15;
S31:After the completion of the first firing atmosphere stage, open regulating valve, control bypass duct combustion by adjusting valve regulation
The intake of gas, now air and combustion gas is entered in kiln by gas pipeline with the second ratio, until the second firing atmosphere rank
Section completes, and after the completion of the second firing atmosphere stage, controls the intake of bypass duct combustion gas by adjusting valve regulation, empty afterwards
Gas and combustion gas are entered in kiln by gas pipeline with the 3rd ratio, till product is fired and is completed, described air with natural
Gas gas proportion is 6:1~11:1, in this sintering procedure, the coefficient of excess air of reducing atmosphere is 0.85~0.95;
S32:After the completion of product is fired, it is first shut off kiln main switch, be then shut off electromagnetic valve, after closed electromagnetic valve,
Close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve cuts out, and finally closes
Regulating valve, end-of-job.
Particularly, described combustion gas is natural gas.
Particularly, described proportioning valve is proportional pressure control valve.
Particularly, described regulating valve is manual modulation valve or electric control valve, and described manual modulation valve is provided with scale.
Compared to prior art, a kind of device and method adjusting firing atmosphere provided by the present invention, when product is burning
When during system, whole process only needs one of oxidizing atmosphere, neutral atmosphere, reducing atmosphere, passing ratio valve accurately adjusts control
Air and the ratio of combustion gas, after combustion gas enters kiln, abundant burning reaches product and burns till required atmosphere, in sintering procedure, and
Because of the stability of proportioning valve, do not result in air or combustion gas to be passed through ratio unstable and affect firing of product;When product exists
Need two or three of oxidizing atmosphere, neutral atmosphere, reducing atmosphere in sintering procedure or when it replaces, first pass through ratio
Valve accurately adjusts the ratio controlling air and combustion gas so as to fully burning reaches oxidizing atmosphere after being passed through kiln, passes through afterwards to adjust
The throughput of section valve regulation combustion gas, makes air and combustion gas to need to reach the firing atmosphere needed for product in ratio entrance kiln,
Until product is fired and completed, have the advantages that structure is simple and convenient to operate.
Brief description
Fig. 1 is a kind of structural representation of the device adjusting firing atmosphere of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention further describes.
Refer to Fig. 1, a kind of device adjusting firing atmosphere of the present invention, including:Gas pipeline 10, air line
30th, bypass duct 20,
Described gas pipeline 10 is sequentially provided with electromagnetic valve 11, proportioning valve 12, branch road hand-operated valve 13 along combustion gas input direction,
Described air line 30 is connected by connecting pipe 31 with proportioning valve 12, and the internal gas producing of described air line 30
Body pressure passes to proportioning valve 12 by connecting pipe 31,
Described bypass duct 20 on described gas pipeline 10, one end of this bypass duct 20 be fixed on electromagnetic valve 11 with
Between proportioning valve 12, the other end is fixed between described proportioning valve 12 and branch road hand-operated valve 13, and sets on described bypass duct 20
There is regulating valve 21.
Particularly, described air line 30 remains opening.
Particularly, proportioning valve 12 adoption rate pressure-control valve, air line 30 is connected with outside air by blower fan, kiln
When stove does not work, blower fan is closed, and branch road hand-operated valve 13 cuts out, and makes air pressure in air line 30 be zero-pressure,
Proportioning valve 12 is closed simultaneously;Conversely, blower fan starts, then form air pressure, now proportioning valve in air line 30
12 can realize automatically turning in the presence of air pressure, and after opening branch road hand-operated valve 13, combustion gas and air enter burner certainly
Dynamic burning.
Particularly, described regulating valve 21 adopts electric control valve, and when work, the control system of kiln sends signal, electricity
After dynamic regulating valve receives the signal that control system sends, enter working condition, adjust the intake of bypass duct 30 combustion gas, work
After making to terminate, the decorum is controlled to be signaled to electric control valve, electric control valve cuts out after receiving signal, prevents shunt valve
The intake of road 30 combustion gas.
Particularly, described regulating valve 21 is to carry graduated manual modulation valve, when work, opens manual modulation valve, leads to
Cross the intake that the scale on manual modulation valve controls bypass duct 30 combustion gas, after end-of-job, close manual modulation valve.
The present invention also provides a kind of method adjusting firing atmosphere, below by specific embodiment, this method is carried out in detail
Explanation.
First oxidizing atmosphere, neutral atmosphere, reducing atmosphere are explained.
Referred to as oxidizing atmosphere (wherein referred to as Strong oxdiative more than 8% for the free oxygen content more than 4% for the free oxygen content
Atmosphere, free oxygen content 4%~5% referred to as common oxidizing atmosphere);The referred to as neutral gas of free oxygen content 1%~1.5%
Atmosphere;The content of free oxygen is less than 1%, and carbon monoxide content more than 1% when, referred to as reducing atmosphere, (wherein free oxygen
Content be less than 1%, and carbon monoxide content below 3% when, referred to as weakly reducing atmosphere, carbon monoxide content is more than 5%
Referred to as strongly reducing atmosphere).Product, in sintering procedure, is if desired passed through different combustion atmospheres, generally initiates rank
, it is desirable that oxidizing atmosphere, below by specific embodiment, the present invention is described in detail for section, and following examples combustion gas adopts
Natural gas explains.
Embodiment 1:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, whole process selects oxidizing atmosphere;After judging result, according to judged result setting ratio valve air and natural gas
The ratio passed through is 13:1;Open kiln main switch and branch road hand-operated valve afterwards, now air forms pressure difference, in air pressure
In the presence of proportioning valve automatically turn on, proportioning valve is electronic after opening to open electromagnetic valve, and air and natural gas are with 13:1 ratio is led to
Cross gas pipeline and enter in kiln, combustion gas in kiln is burnt through abundant, calculates air excess through detector in kiln
Coefficient is 1.1;After the completion of product is fired, it is first shut off kiln main switch, is then shut off electromagnetic valve, after closed electromagnetic valve, close
Close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve is lacking air thrust
Effect is lower to close, end-of-job.
Embodiment 2:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, whole process selects reducing atmosphere;After judging result, according to judged result setting ratio valve air and natural gas
The ratio passed through is 7:1;Open kiln main switch and branch road hand-operated valve afterwards, now air forms pressure difference, in air pressure
In the presence of proportioning valve automatically turn on, proportioning valve is electronic after opening to open electromagnetic valve, and air and natural gas are with 7:1 ratio is passed through
Gas pipeline enters in kiln, and combustion gas in kiln is burnt through abundant, calculates air excess system through detector in kiln
Number is 1.05;After the completion of product is fired, it is first shut off kiln main switch, is then shut off electromagnetic valve, after closed electromagnetic valve, close
Branch road hand-operated valve, due to the cut out of branch road hand-operated valve, has cut off the input of air, and now proportioning valve is lacking the work of air thrust
Use lower closing, end-of-job.
Embodiment 3:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, whole process selects neutral atmosphere;After judging result, according to judged result setting ratio valve air and natural gas
The ratio passed through is 10:1;Open kiln main switch and branch road hand-operated valve afterwards, now air forms pressure difference, in air pressure
In the presence of proportioning valve automatically turn on, proportioning valve is electronic after opening to open electromagnetic valve, and air and natural gas are with 10:1 ratio is led to
Cross gas pipeline and enter in kiln, combustion gas in kiln is burnt through abundant, calculates air excess through detector in kiln
Coefficient is 1.15;After the completion of product is fired, it is first shut off kiln main switch, is then shut off electromagnetic valve, after closed electromagnetic valve, close
Close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve is lacking air thrust
Effect is lower to close, end-of-job.
Embodiment 4:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, the first stage selects oxidizing atmosphere, and second stage selects reducing atmosphere;After judging result, according to judgement knot
The ratio that fruit setting ratio valve air and natural gas pass through is first stage oxidizing atmosphere 12:1;Open afterwards kiln main switch with
Branch road hand-operated valve, now forms pressure difference between ratio valve inlet and outlet, and in the presence of air pressure, proportioning valve is opened, than
Example valve is electronic after opening to open electromagnetic valve, and air and natural gas are with 12:1 ratio enters in kiln by gas pipeline, in kiln
In stove, combustion gas is burnt through abundant, and calculating coefficient of excess air through detector in kiln is 1.08;Treat that the first stage fires
After the completion of, open regulating valve, control the intake of bypass duct combustion gas by adjusting valve regulation, now air and natural gas are thought
6:1 ratio enters in kiln by gas pipeline, and combustion gas in kiln is burnt through abundant, calculates through detector in kiln
Going out coefficient of excess air is 0.85;After the completion of product is fired, it is first shut off kiln main switch, be then shut off electromagnetic valve, electromagnetism
After valve cuts out, close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve cuts out,
Finally close regulating valve, end-of-job.
Embodiment 5:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, the first stage selects oxidizing atmosphere, and second stage selects neutral atmosphere, and the phase III selects oxidizing atmosphere;Sentence
Break after result, be first stage oxidizing atmosphere 8 according to the ratio that judged result setting ratio valve air and natural gas pass through:1;
Open kiln main switch and branch road hand-operated valve afterwards, now form pressure difference between ratio valve inlet and outlet, in air pressure
In the presence of proportioning valve open, proportioning valve is electronic after opening to open electromagnetic valve, and air and natural gas are with 8:1 ratio passes through combustion gas
Pipeline enters in kiln, and combustion gas in kiln is burnt through abundant, and calculating coefficient of excess air through detector in kiln is
1.12;After the completion for the treatment of that the first stage fires, open regulating valve, control the intake of bypass duct combustion gas by adjusting valve regulation,
Now air and natural gas think 8:1 ratio enters in kiln by gas pipeline, and in kiln, natural gas fires through abundant
Burn, calculating coefficient of excess air through detector in kiln is 0.95;After the completion of band second stage is fired, adjusted by regulating valve
Section controls the intake of bypass duct combustion gas, afterwards air and natural gas with combustion gas with 11:1 ratio is entered by gas pipeline
In kiln, in kiln, natural gas burns through abundant, and calculating coefficient of excess air through detector in kiln is 0.9;Produce
After the completion of product are fired, it is first shut off kiln main switch, is then shut off electromagnetic valve, after closed electromagnetic valve, close branch road hand-operated valve, by
In the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve cuts out, finally close regulating valve, end-of-job.
Embodiment 6:
In composition first according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges to produce
In product sintering procedure, the first stage selects oxidizing atmosphere, and second stage selects neutral atmosphere, and the phase III selects reducing atmosphere, the
Four stages selected neutral atmosphere;After judging result, the ratio passed through according to judged result setting ratio valve air and natural gas
For first stage oxidizing atmosphere 9:1;Open kiln main switch and branch road hand-operated valve afterwards, now between ratio valve inlet and outlet
Form pressure difference, proportioning valve is opened in the presence of air pressure, proportioning valve is electronic after opening to open electromagnetic valve, and air is fired with sky
Gas is with 9:1 ratio enters in kiln by gas pipeline, and combustion gas in kiln is burnt through abundant, through detector meter in kiln
Calculation show that coefficient of excess air is 1.15;After the completion for the treatment of that the first stage fires, open regulating valve, by adjust valve regulation control other
The intake of road pipe gas, now air and natural gas think 7:1 ratio enters in kiln by gas pipeline, in kiln
Interior natural gas burns through abundant, and calculating coefficient of excess air through detector in kiln 8 stove is 0.92;Treat that second stage is fired
After the completion of, control the intake of bypass duct combustion gas by adjusting valve regulation, air and natural gas are with 6 afterwards:1 ratio is passed through
Gas pipeline enters in kiln, and in kiln, natural gas burns through abundant, calculates air excess through detector in kiln
Coefficient is 0.9;After the completion for the treatment of that the phase III fires, control the intake of bypass duct combustion gas by adjusting valve regulation, air with
Natural gas is with 6:1 ratio enters in kiln by gas pipeline, and in kiln, natural gas burns through abundant, through visiting in kiln
Surveying device and calculating coefficient of excess air is 0.88;After the completion of product is fired, it is first shut off kiln main switch, is then shut off electromagnetism
Valve, after closed electromagnetic valve, cuts out branch road hand-operated valve, due to the cut out of branch road hand-operated valve, has cut off the input of air, now ratio
Valve cuts out, and finally closes regulating valve, end-of-job.
Through above example it can be concluded that the accurate control of combustion atmosphere can be realized using device of the present invention
System, and can precisely detect coefficient of excess air, and then improves the quality firing product, have that structure is simple, operation side
Just advantage.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (4)
1. a kind of method adjusting firing atmosphere, using a kind of device adjusting firing atmosphere, this device includes:Gas pipeline
(10), air line (30), bypass duct (20), described gas pipeline (10) is sequentially provided with electromagnetic valve along combustion gas input direction
(11), proportioning valve (12), branch road hand-operated valve (13), described air line (30) and proportioning valve (12) pass through connecting pipe (31) even
Connect, on described gas pipeline (10), electromagnetic valve is fixed in one end of this bypass duct (20) to described bypass duct (20)
(11) and proportioning valve (12) between, the other end is fixed between described proportioning valve (12) and branch road hand-operated valve (13), and described side
Road pipeline (20) is provided with regulating valve (21) it is characterised in that the method comprises the following steps:
S10:Required in composition according to raw material in formula for a product and sintering procedure, the physical reaction of each stage forecast judges
Firing atmosphere, if judged result is to need oxidizing atmosphere or one of neutral atmosphere or reducing atmosphere all the time in work process
When, then enter step S20, if judged result is two kinds needing in work process in oxidizing atmosphere, neutral atmosphere, reducing atmosphere
Or three kinds or when it replaces, then enter step S30;
S20:It is required firing atmosphere according to judged result setting ratio valve air and combustion gas passing ratio, now proportioning valve and tune
Section valve is closed;
S21:After proportioning valve is set as required firing atmosphere, it is first turned on kiln power supply switch, starts blower fan, then open branch road
Hand-operated valve, air pressure is imported proportioning valve by connecting pipe, and proportioning valve is opened in the presence of air pressure, opens electromagnetism afterwards
Valve, now air and combustion gas is entered in kiln by gas pipeline with setting ratio, until product is fired and completed, here was fired
In journey, coefficient of excess air is 1.05~1.15;
S22:After the completion of product is fired, it is first shut off kiln power supply switch, closes blower fan, be then shut off electromagnetic valve, electromagnetic valve
After closing, close branch road hand-operated valve, due to the closing of branch road hand-operated valve, cut off the input of air, now proportioning valve is not having
Close in the presence of air pressure, end-of-job;
S30:It is firing atmosphere needed for first according to judged result setting ratio valve air and combustion gas passing ratio, now proportioning valve
It is closed with regulating valve, be set as, after required first firing atmosphere, opening kiln fan on and off switch, leading after proportioning valve
Air pressure is imported proportioning valve by pressure pipe, and proportioning valve is opened in the presence of air pressure, then opens electromagnetic valve, now air
Entered in kiln by gas pipeline with the first setting ratio with combustion gas, until the first firing atmosphere stage completed, here is fired
During coefficient of excess air be 1.05~1.15;
S31:After the completion of the first firing atmosphere stage, open regulating valve, control bypass duct combustion gas by adjusting valve regulation
Intake, now air and combustion gas is entered in kiln by gas pipeline with the second ratio, until the second firing atmosphere stage is complete
Become, after the completion of the second firing atmosphere stage, by adjust valve regulation control bypass duct combustion gas intake, afterwards air with
Combustion gas is entered in kiln by gas pipeline with the 3rd ratio, until till product is fired and completed, reduction in this sintering procedure
The coefficient of excess air of atmosphere is controlled to 0.85~0.95;S32:After the completion of product is fired, it is first shut off kiln fan power supply
Switch, is then shut off electromagnetic valve, after closed electromagnetic valve, closes branch road hand-operated valve, due to the closing of branch road hand-operated valve, has cut off sky
The input of gas, now proportioning valve closing, finally close regulating valve, end-of-job.
2. a kind of method adjusting firing atmosphere according to claim 1 is it is characterised in that described combustion gas is natural gas.
3. a kind of method adjusting firing atmosphere according to claim 1 is it is characterised in that described proportioning valve is ratio pressure
Force control valve.
4. a kind of method adjusting firing atmosphere according to claim 1 is it is characterised in that described regulating valve is manual tune
Section valve or electric control valve, described manual modulation valve is provided with scale.
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CN104296159B true CN104296159B (en) | 2017-02-15 |
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CN107990350A (en) * | 2017-12-28 | 2018-05-04 | 广东摩德娜科技股份有限公司 | Kiln air-fuel ratio regulation system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2869606Y (en) * | 2006-02-17 | 2007-02-14 | 刘培新 | High-temp, gas intermittent kiln double-ratio combustion control device |
CN202511322U (en) * | 2012-05-02 | 2012-10-31 | 华美洁具有限公司 | Combustion control device for shuttle kiln |
CN202521629U (en) * | 2012-05-02 | 2012-11-07 | 华美洁具有限公司 | Natural gas three-level pressure regulating device of shuttle kiln |
Family Cites Families (5)
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JP3404516B2 (en) * | 1997-04-25 | 2003-05-12 | 日本ファーネス工業株式会社 | Firing control device and firing control method |
CN2511924Y (en) * | 2001-11-05 | 2002-09-18 | 叶荣堂 | Automatic reduction quick sintered shuttle kiln |
CN201787580U (en) * | 2010-05-27 | 2011-04-06 | 潍坊同晟工贸有限公司 | Combustion control device of gas combustor for industrial kiln |
CN203550639U (en) * | 2013-09-30 | 2014-04-16 | 重庆锦和鸿科技有限公司 | Full-automatic control system of shuttle kiln |
CN204176676U (en) * | 2014-10-09 | 2015-02-25 | 景德镇陶瓷学院 | A kind of device regulating firing atmosphere |
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2014
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2869606Y (en) * | 2006-02-17 | 2007-02-14 | 刘培新 | High-temp, gas intermittent kiln double-ratio combustion control device |
CN202511322U (en) * | 2012-05-02 | 2012-10-31 | 华美洁具有限公司 | Combustion control device for shuttle kiln |
CN202521629U (en) * | 2012-05-02 | 2012-11-07 | 华美洁具有限公司 | Natural gas three-level pressure regulating device of shuttle kiln |
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