CN104178604A - Energy-consumption-optimized isothermal normalizing furnace - Google Patents
Energy-consumption-optimized isothermal normalizing furnace Download PDFInfo
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- CN104178604A CN104178604A CN201410378930.0A CN201410378930A CN104178604A CN 104178604 A CN104178604 A CN 104178604A CN 201410378930 A CN201410378930 A CN 201410378930A CN 104178604 A CN104178604 A CN 104178604A
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Abstract
The invention discloses an energy-consumption-optimized isothermal normalizing furnace which is modified based on the structure of a traditional heat recovery type isothermal normalizing furnace. An independent and partially through modular hearth is arranged in the furnace body; the hearth is straight through at the front ends of upper and lower layers of combustion flues so that a heat convection region can be formed; the hearth is isolated at the middle rear ends of the upper and lower layers of combustion flues so that a heating region on the upper side and a cooling region on the lower side can be formed and straight through at the tail ends; the isothermal normalizing furnace is provided with gas impulse burners in the heating region, and an upper row of air blast pipes and a low row of air blast pipes which are both based on a centrifugal fan and opposite to conveying mesh belts in a quick cooling section of the cooling region, and the centrifugal fan is controllable to take air from air outside the furnace and a relatively low-temperature gas from the tail end of a slow cooling section. The energy-consumption-optimized isothermal normalizing furnace maintains the advantage of high heat utilization rate of a traditional furnace; besides, the heat-exchange centrifugal fan, and the independent and partially through air flues and a heat exchange device in the furnace are adopted to form a systematic heat recovery system, and therefore, efficient utilization of heat in each temperature region in the furnace can be realized and the furnace temperature uniformity can be guaranteed actually.
Description
Technical field
The present invention relates to a kind of isothermal normalizing treatment unit of metal parts, relate in particular to and a kind of heat energy in normalizing treatment is rationally utilized, energy consumption is controlled isothermal normalizing furnace flexibly, belongs to casting equipment field.
Background technology
Normalizing and dry quenching for metal works (such as low medium carbon steel, steel alloy etc.) in prior art are processed, and as forging or casting workpiece Deng Hou road Cutting Process, provide necessary preparation.Generally in stove after heating and thermal insulation, succeeded by Rapid cooling in the air, in cooling rear a large amount of losses, there is the defects such as energy dissipation is large, and thermal pollution is serious in the heat energy of workpiece wherein thus.
Thus, there is creator this to be proposed to improvement project, as the disclosed a kind of thermal recovery type continuous isothermal normalizing furnace of patent (ZL 2008201163260), although it provides the heat recovery that utilizes slow cooling section to carry out the technical solution of preheating to material recently, and obtained and reduced heat waste, save the certain effect of energy consumption.But still there is larger imperfection part in such scheme, especially show for high temperature workpiece rapidly cooling still consume energy larger, and directly introduce cool exterior air and carry out rapid cooling, can not meet the different cooling requirement of different workpieces, and make the tissue of workpiece and mechanical property all be difficult to reach perfect condition, when serious, even affect dry quenching effect.
Summary of the invention
Object of the present invention is intended to propose a kind of isothermal normalizing furnace of energy optimization, solves the problem that normalizing and dry quenching technique cannot rationally save control energy consumption for a long time.
The technical solution that the present invention realizes above-mentioned purpose is: a kind of isothermal normalizing furnace of energy optimization, in body of heater, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, the middle rear end of upper strata combustion flue is heating and thermal insulation section, the front end of lower floor's combustion flue is slow cooling section, the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction, on, in lower floor's combustion flue, foraminous conveyer is set, it is characterized in that: in described body of heater, be provided with cord wood burner hearth independent and that part connects, burner hearth is upper, the front end of lower floor's combustion flue is formed through thermal convection district and is provided with feeding mouth and discharge port, burner hearth is upper, the middle rear end of lower floor's combustion flue is separated by and forms the heating zone of upside and the cooling zone of downside and connect in end, described isothermal normalizing furnace is provided with gas impulse burner in heating zone, instant cold section in cooling zone is provided with upper row's blast pipe and the lower row's blast pipe based on centrifugal blower and relative foraminous conveyer, and the controlled wind of getting of centrifugal blower is from stove outer air and slow cooling section end relative low temperature gas.
Further, be respectively equipped with and be only applicable to the thorax interior passageway that foraminous conveyer and material pass through between described thermal convection district and heating zone and between thermal convection district and cooling zone, burner hearth Nei Ge district air is relatively static.
Further, the slow cooling section of the preheating section of upper strata combustion flue and lower floor's combustion flue is oppositely arranged and is formed through thermal convection district, and preheating section top is provided with convection flow fan.
Further, in the combustion flue of described upper strata, be provided with the first foraminous conveyer, the middle rear end of lower floor's combustion flue is provided with the second foraminous conveyer, and the front end of lower floor's combustion flue is provided with the 3rd foraminous conveyer of certain slope, and second, third foraminous conveyer is in the isothermal section handing-over of lower floor's combustion flue.
Further, described the first foraminous conveyer is provided with and maintains guipure and steady upper supporting roller and the snub pulley transmitting of material.
Further, the flame end that described heating zone is provided with 12 gas impulse burners and gas impulse burner is provided with the thermal conductive metal pipe of bee-hole shape.
Further, the gas impulse burner of described heating zone is made as the first heating burner group, the second heating burner group and the 3rd heating burner group of controlled unlatching respectively successively with material delivery direction, and more last group of high 10-20 ℃ of heating burner group of one group of heating burner group after the Heating temperature of corresponding material.
Further, described thermal convection district is along furnace depth to being divided into the above convection cavity of two-stage, and convection cavities at different levels top is respectively equipped with a convection flow fan.
Further, the guipure end in the combustion flue of upper strata is provided with the blanking slideway mouth that material slips into lower floor's combustion flue.
Further, described centrifugal blower is provided with the remote-controlled wind switch of getting, and gets air port for one of centrifugal blower and connects stove outer air, and another is got air port pipeline and is connected to slow cooling section end relative low temperature gas.
This normalizing furnace proposed by the invention, compare to prior art and possess comparatively significant advantage: it has retained traditional stove and accessory and has utilized cooling heat energy workpiece to be carried out outside the advantage of preheating raising heat utilization efficiency, and more perfect scheme further proposed, adopt air channel and heat exchanger independent and that part connects in heat exchange centrifugal blower, stove to realize systematic heat recovery system, the heat energy that can realize each temperature province in stove efficiently utilizes, and has conscientiously guaranteed temperature uniformity.
Accompanying drawing explanation
Fig. 1 is the axle side direction structure sectional view of isothermal normalizing furnace one preferred embodiment of the present invention.
Fig. 2 is the plan structure schematic diagram of isothermal normalizing furnace shown in Fig. 1.
Fig. 3 is that the A-A of Fig. 1 is to sectional view.
Fig. 4 is that the B-B of Fig. 1 is to sectional view.
Fig. 5 is the structure enlarged diagram of C part in Fig. 1.
Embodiment
The present invention is by the problems that traditional isothermal normalizing furnace is run in process practice, and innovation proposes a kind of isothermal normalizing furnace of energy optimization, with the energy consumption of this rationally joint control normalizing and dry quenching technique.
The constitutional features of isothermal normalizing furnace of the present invention is by the clear displaying of the detailed description from a preferred embodiment of the present invention.As shown in Figures 1 to 5, common isothermal normalizing furnace, in its body of heater 1, be provided with upper strata combustion flue 11He lower floor combustion flue 12, the front end of upper strata combustion flue 11 is preheating section I, the middle rear end of upper strata combustion flue 11 is heating and thermal insulation section II, the front end of lower floor's combustion flue is slow cooling section III, and the middle rear end of lower floor's combustion flue is followed successively by instant cold section IV and isothermal section with material delivery direction.In upper and lower layer combustion flue, foraminous conveyer is set.With this, carry workpiece and carry out art breading by each temperature section.
Texture improvement as this creation, in body of heater 1, be provided with cord wood burner hearth independent and that part connects, burner hearth is formed through thermal convection district and is provided with feeding mouth 13 and discharge port 14 at the front end of upper and lower floor combustion flue, and burner hearth is separated by and is formed the heating zone of upside and the cooling zone of downside and connect in end in the middle rear end of upper and lower layer combustion flue.Especially, this isothermal normalizing furnace is provided with gas impulse burner 3 in heating zone, instant cold section in cooling zone is provided with upper row's blast pipe 42b and the lower row's blast pipe 42a based on centrifugal blower 41 and relative foraminous conveyer, and the controlled wind of getting of centrifugal blower is from stove outer air and slow cooling section end relative low temperature gas.When workpiece has the demand of fast speed cooling, just switch and get wind from stove outer air thus, direct and high temperature workpiece carries out heat exchange cooling; When the cooling rate of workpiece requires just not switch and get wind from slow cooling section end relative low temperature gas while being very extreme, utilize furnace air internal recycle to realize cooling.
As such scheme, further optimize, between above-mentioned thermal convection district and heating zone, between (being between I, II) and thermal convection district and cooling zone, (being between III, IV) is only respectively equipped with and is applicable to the thorax interior passageway that foraminous conveyer and material pass through, and makes thus in burner hearth except foraminous conveyer is relative static with material (being workpiece) Wai Ge district air.
The foraminous conveyer of this isothermal normalizing furnace is step-by-step design, particularly, in the combustion flue of upper strata, be provided with the first foraminous conveyer 21, the middle rear end of lower floor's combustion flue is provided with the second foraminous conveyer 22, the front end of lower floor's combustion flue is provided with the 3rd foraminous conveyer 23 of certain slope, and second, third foraminous conveyer is in isothermal section handing-over, the continuity of lower floor's combustion flue.Further, this first foraminous conveyer 21 is provided with and maintains guipure and steady upper supporting roller 211 and the snub pulley 212 transmitting of material.Guipure end in the combustion flue of upper strata is provided with the blanking slideway mouth 16 that material slips into lower floor's combustion flue.
This isothermal normalizing furnace is provided with 12 gas impulse burners 3 and gas impulse burner flame end in heating zone is provided with the thermal conductive metal pipe 31 of bee-hole shape, and enlarged diagram is as shown in Figure 5 visible.
By the described isothermal normalizing furnace of such scheme is applied in normalizing and dry quenching technique, conscientiously realized that preheating to material, heating, speed are cold, reasonable temperature control and the heat energy utilization of slow cooling, each segment process of discharging, the energy consumption of its production of units in the time compares to traditional isothermal normalizing furnace and reduces more than 20%
Except such scheme, the present invention also has the embodiment of following plurality of optional, is exemplified below.
One, this isothermal normalizing furnace have several gas impulse burners 3 of a row, and be made as successively the first heating burner group X, the second heating burner group Y and the 3rd heating burner group Z of controlled unlatching respectively with material delivery direction, and more last group of high 10-20 ℃ of heating burner group of one group of heating burner group after the Heating temperature of corresponding material.So just can effectively control the heating efficiency that each section removed in heating, according to the different operating modes of technique initial stage preheating deficiency and abundant preheating of middle and later periods, controllably select one or more groups heating burner, can effectively reduce gas consumption.
The two, this isothermal normalizing furnace is in thermal convection district along furnace depth to being divided into the above convection cavity of two-stage, and convection cavities at different levels top is respectively equipped with a convection flow fan 5, this convection flow fan 5 by baffle plate 51 directly towards lower floor's combustion flue air-out.Embodiment illustrated in fig. 1 is three grades of convection cavities, according to the cooling real time temperature of material and cooling efficiency requirement, rationally controls the startup of convection flow fan or closes, and further saves energy consumption.
Moreover, this isothermal normalizing furnace is provided with the remote-controlled wind switch of getting on centrifugal blower, gets air port for one of centrifugal blower and connects stove outer air, another is got air port pipeline and is connected to slow cooling section end relative low temperature gas.Can select flexibly the air-out of instant cold section thus, rationally regulate cooling efficiency.
In addition the pan feeding guipure 131 that, the corresponding feeding mouth 13 of this isothermal normalizing furnace is provided with self-feeding and docks with the first foraminous conveyer 21; The discharging guipure 141 that corresponding discharge port 14 is provided with self-feeding and docks with the 3rd foraminous conveyer 23.The automatic loading and unloading that is conducive to realize treating material and processes rear material.And be also provided with a maintenance process hole 18 that openable is airtight at the end of this isothermal normalizing furnace upper strata combustion flue, if desired for normalizing furnace overhauls, safeguards and facilitate.
As fully visible, this normalizing furnace proposed by the invention, compare to prior art and possess comparatively significant advantage: it has retained traditional stove and accessory and has utilized cooling heat energy workpiece to be carried out outside the advantage of preheating raising heat utilization efficiency, and more perfect scheme further proposed, adopt air channel and heat exchanger independent and that part connects in heat exchange centrifugal blower, stove to realize systematic heat recovery system, the heat energy that can realize each temperature province in stove efficiently utilizes, and has conscientiously guaranteed temperature uniformity.
Below embodiment by reference to the accompanying drawings describes, and is intended to be convenient to understand innovation essence of the present invention, but not with this, limits the claim protection domain of the multifarious embodiment of the present invention and requirement.In every case understand the present invention, and the equivalent structure carrying out according to above-described embodiment changes or member is replaced, and can realize the design of identical object and effect, all should be considered as the infringement to present patent application protection content.
Claims (10)
1. the isothermal normalizing furnace of an energy optimization, in body of heater, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, the middle rear end of upper strata combustion flue is heating and thermal insulation section, the front end of lower floor's combustion flue is slow cooling section, the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction, on, in lower floor's combustion flue, foraminous conveyer is set, it is characterized in that: in described body of heater, be provided with cord wood burner hearth independent and that part connects, burner hearth is upper, the front end of lower floor's combustion flue is formed through thermal convection district and is provided with feeding mouth and discharge port, burner hearth is upper, the middle rear end of lower floor's combustion flue is separated by and forms the heating zone of upside and the cooling zone of downside and connect in end, described isothermal normalizing furnace is provided with gas impulse burner in heating zone, instant cold section in cooling zone is provided with upper row's blast pipe and the lower row's blast pipe based on centrifugal blower and relative foraminous conveyer, and the controlled wind of getting of centrifugal blower is from stove outer air and slow cooling section end relative low temperature gas.
2. the isothermal normalizing furnace of energy optimization according to claim 1, it is characterized in that: between described thermal convection district and heating zone and between thermal convection district and cooling zone, be respectively equipped with and be only applicable to the thorax interior passageway that foraminous conveyer and material pass through, burner hearth Nei Ge district air is relatively static.
3. the isothermal normalizing furnace of energy optimization according to claim 1, is characterized in that: the slow cooling section of the preheating section of upper strata combustion flue and lower floor's combustion flue is oppositely arranged and is formed through thermal convection district, and preheating section top is provided with convection flow fan.
4. the isothermal normalizing furnace of energy optimization according to claim 1, it is characterized in that: in the combustion flue of described upper strata, be provided with the first foraminous conveyer, the middle rear end of lower floor's combustion flue is provided with the second foraminous conveyer, the front end of lower floor's combustion flue is provided with the 3rd foraminous conveyer of certain slope, and second, third foraminous conveyer is in the isothermal section handing-over of lower floor's combustion flue.
5. the isothermal normalizing furnace of energy optimization according to claim 4, is characterized in that: described the first foraminous conveyer is provided with and maintains upper supporting roller and the snub pulley that guipure and material steadily transmit.
6. the isothermal normalizing furnace of energy optimization according to claim 1, is characterized in that: the flame end that described heating zone is provided with 12 gas impulse burners and gas impulse burner is provided with the thermal conductive metal pipe of bee-hole shape.
7. according to the isothermal normalizing furnace of energy optimization described in claim 1 or 6, it is characterized in that: the gas impulse burner of described heating zone is made as the first heating burner group, the second heating burner group and the 3rd heating burner group of controlled unlatching respectively successively with material delivery direction, and more last group of high 10-20 ℃ of heating burner group of one group of heating burner group after the Heating temperature of corresponding material.
8. the isothermal normalizing furnace of energy optimization according to claim 1, is characterized in that: described thermal convection district is along furnace depth to being divided into the above convection cavity of two-stage, and convection cavities at different levels top is respectively equipped with a convection flow fan.
9. the isothermal normalizing furnace of energy optimization according to claim 1, is characterized in that: the guipure end in the combustion flue of upper strata is provided with the blanking slideway mouth that material slips into lower floor's combustion flue.
10. the isothermal normalizing furnace of energy optimization according to claim 1, it is characterized in that: described centrifugal blower is provided with the remote-controlled wind switch of getting, get air port for one of centrifugal blower and connect stove outer air, another is got air port pipeline and is connected to slow cooling section end relative low temperature gas.
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| CN201410378930.0A CN104178604A (en) | 2014-08-04 | 2014-08-04 | Energy-consumption-optimized isothermal normalizing furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911307A (en) * | 2015-05-08 | 2015-09-16 | 湖州华虹工业炉有限公司 | Mesh belt normalizing furnace |
| CN109237938A (en) * | 2018-11-02 | 2019-01-18 | 黄翔鸥 | A kind of bilayer chain-bar type net strip sintering furnace |
| CN111004907A (en) * | 2019-12-31 | 2020-04-14 | 广东凤铝铝业有限公司 | Furnace temperature control system of isothermal normalizing furnace |
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| CN201193236Y (en) * | 2008-05-12 | 2009-02-11 | 黄培 | Thermal recovery type continuous isothermal normalizing furnace |
| CN202297686U (en) * | 2011-10-21 | 2012-07-04 | 苏州工业园区久禾工业炉有限公司 | Cooling device for isothermal normalizing furnace |
| CN103320590A (en) * | 2013-06-17 | 2013-09-25 | 苏州新凌电炉有限公司 | Internal circulating air cooling device |
| CN203999686U (en) * | 2014-08-04 | 2014-12-10 | 苏州新凌电炉有限公司 | A kind of isothermal normalizing furnace of energy optimization |
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2014
- 2014-08-04 CN CN201410378930.0A patent/CN104178604A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193236Y (en) * | 2008-05-12 | 2009-02-11 | 黄培 | Thermal recovery type continuous isothermal normalizing furnace |
| CN202297686U (en) * | 2011-10-21 | 2012-07-04 | 苏州工业园区久禾工业炉有限公司 | Cooling device for isothermal normalizing furnace |
| CN103320590A (en) * | 2013-06-17 | 2013-09-25 | 苏州新凌电炉有限公司 | Internal circulating air cooling device |
| CN203999686U (en) * | 2014-08-04 | 2014-12-10 | 苏州新凌电炉有限公司 | A kind of isothermal normalizing furnace of energy optimization |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911307A (en) * | 2015-05-08 | 2015-09-16 | 湖州华虹工业炉有限公司 | Mesh belt normalizing furnace |
| CN109237938A (en) * | 2018-11-02 | 2019-01-18 | 黄翔鸥 | A kind of bilayer chain-bar type net strip sintering furnace |
| CN109237938B (en) * | 2018-11-02 | 2024-02-09 | 黄翔鸥 | Double-layer chain rod type mesh belt sintering furnace |
| CN111004907A (en) * | 2019-12-31 | 2020-04-14 | 广东凤铝铝业有限公司 | Furnace temperature control system of isothermal normalizing furnace |
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Application publication date: 20141203 |