CN203999687U - Heat exchanger for isothermal normalizing furnace slow cooling preheating - Google Patents
Heat exchanger for isothermal normalizing furnace slow cooling preheating Download PDFInfo
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- CN203999687U CN203999687U CN201420435275.3U CN201420435275U CN203999687U CN 203999687 U CN203999687 U CN 203999687U CN 201420435275 U CN201420435275 U CN 201420435275U CN 203999687 U CN203999687 U CN 203999687U
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- combustion flue
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- heat exchanger
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- slow cooling
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Abstract
The utility model has disclosed a kind of heat exchanger for isothermal normalizing furnace slow cooling preheating, in the body of heater of isothermal normalizing furnace, 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, in upper and lower layer combustion flue, foraminous conveyer is set.Especially, this body of heater is formed through thermal convection district at the front end of upper and lower floor combustion flue, and this heat exchanger is located at thermal convection district, and heat exchanger is provided with the blower fan that is positioned at top, thermal convection district, the semiclosed air channel that extends to lower floor's combustion flue, the air in thermal convection district flows through upper strata combustion flue, blower fan and air channel internal recycle from lower floor's combustion flue.The application of the utility model heat exchanger, can realize the internal recycle rate of isothermal normalizing furnace slow cooling and preheating controlledly, and the abundant recycling that has greatly improved heat energy, meets the demand of industrial production of outstanding energy-saving and emission-reduction.
Description
Technical field
The utility model relates to a kind of isothermal normalizing treatment unit of metal parts, relates in particular to a kind of heat energy in normalizing treatment rationally to be utilized to the heat exchanger of realizing workpiece slow cooling thermal pretreatment, belongs to casting equipment field.
Background technology
Normalizing and dry quenching for metal works (such as grey cast iron, high chromium steel ball 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 many imperfection parts in such scheme, for example, when the heat energy discharging in utilizing high temperature workpiece annealing process carries out the thermal pretreatment of workpiece recently, moderate due to thermal convection effect, efficiency of utilization is difficult to improve, and adopt outside blower fan air intake to drive the words of convection current, will have a strong impact on thermal equilibrium, cause heat-energy losses, be that slow cooling effect or pre-heat effect are all difficult to arrive expection.
Summary of the invention
The purpose of this utility model is intended to propose a kind of heat exchanger for isothermal normalizing furnace slow cooling preheating, solves the thermal convection strength problem of slow cooling warm-up control in normalizing and dry quenching technique.
The technical solution that the utility model is realized above-mentioned purpose is: for the heat exchanger of isothermal normalizing furnace slow cooling preheating, in the body of heater of isothermal normalizing furnace, 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: described body of heater is upper, the front end of lower floor's combustion flue is formed through thermal convection district, described heat exchanger is located at thermal convection district, and heat exchanger is provided with the blower fan that is positioned at top, thermal convection district, the semiclosed air channel that extends to lower floor's combustion flue, air in thermal convection district from lower floor's combustion flue through upper strata combustion flue, blower fan and air channel internal recycle flow.
Further, described blower fan has modular foundation, and blower fan is connected with body of heater detachable-type sealed.
Further, described thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, and each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.
Further, described air channel has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, and the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.
This heat exchanger that the utility model proposes, compare to prior art and possess comparatively significant advantage: it can realize the internal recycle rate of isothermal normalizing furnace slow cooling and preheating controlled, greatly improve the abundant recycling of heat energy, met the demand of industrial production of outstanding energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model heat exchanger.
Embodiment
The utility model is by the problems that traditional isothermal normalizing furnace is run in process practice, and innovation proposes a kind of heat exchanger for isothermal normalizing furnace slow cooling preheating, with this, optimizes the energy consumption of joint control normalizing and dry quenching technique.
The constitutional features of the utility model heat exchanger as shown in Figure 1.Common isothermal normalizing furnace, in its body of heater 1, be provided with upper strata combustion flue and lower floor's combustion flue, the front end of upper strata combustion flue is preheating section, and 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, and the middle rear end of lower floor's combustion flue is followed successively by instant cold section and isothermal section with material delivery direction.In upper and lower layer combustion flue, foraminous conveyer is set, with this, carries workpiece and carry out art breading by each temperature section.
Texture improvement as this creation, this body of heater 1 is formed through thermal convection district at the front end of upper and lower floor combustion flue, and this heat exchanger is just located at thermal convection district, and heat exchanger is provided with the blower fan 5 that is positioned at top, thermal convection district, the semiclosed air channel 51 that extends to lower floor's combustion flue, the air in thermal convection district flows through upper strata combustion flue 21, blower fan 5 and air channel 51 internal recycle from lower floor's combustion flue 22.Wherein, air channel 51 has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, and the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.As can be seen here, this heat exchanger is to realize by the internal air circulation in this region.
It should be noted that, in this heat exchanger, because the temperature of charge in lower floor's combustion flue is higher than the material recently in the combustion flue of upper strata, therefore generally thermal convection can exist all the time.But this pure natural convection action cannot meet the slow cooling thermal pretreatment effect under technological design, therefore need to apply the power that external force provides thermal convection to accelerate to this normalizing furnace.
As the further optimization of such scheme, this blower fan has modular foundation, and blower fan is connected with body of heater detachable-type sealed.Illustrated modular foundation is that right cylinder is embedded in furnace wall, and the flabellum of blower fan stretches in body of heater, and the flabellum drive shaft one of blower fan is connected to controlled rotation among modular foundation.Except illustrated embodiment, this modular foundation can have more contour structures, only need meet flexible dismounting, with the requirement of furnace wall sealing engagement.
In addition, this thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, and each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.For material, from isothermal section, deliver to slow cooling section and lower the temperature gradually, can control flexibly driving blower fan, maintain or accelerate the thermal convection internal recycle air-flow of respective heat exchanger, further promote air cooling effect.
As fully visible, this heat exchanger that the utility model proposes, compare to prior art and possess comparatively significant advantage: it can realize the internal recycle rate of isothermal normalizing furnace slow cooling and preheating controlled, greatly improve the abundant recycling of heat energy, met the demand of industrial production of outstanding energy-saving and emission-reduction.
Below embodiment by reference to the accompanying drawings describes, and is intended to be convenient to understand innovation essence of the present utility model, but not with this, limits the claim protection domain of the multifarious embodiment of the utility model and requirement.In every case understand the utility model, 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 (4)
1. for the heat exchanger of isothermal normalizing furnace slow cooling preheating, in the body of heater of isothermal normalizing furnace, 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: described body of heater is upper, the front end of lower floor's combustion flue is formed through thermal convection district, described heat exchanger is located at thermal convection district, and heat exchanger is provided with the blower fan that is positioned at top, thermal convection district, the semiclosed air channel that extends to lower floor's combustion flue, air in thermal convection district from lower floor's combustion flue through upper strata combustion flue, blower fan and air channel internal recycle flow.
2. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described blower fan has modular foundation, blower fan is connected with body of heater detachable-type sealed.
3. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described thermal convection district is divided into along material delivery direction the heat exchanger that two-stage is separated by above, each heat exchanger is respectively equipped with the blower fan that is positioned at top, thermal convection district, and the drive end of whole blower fans is connected to the electrical control panel of isothermal normalizing furnace.
4. according to claim 1 for the heat exchanger of isothermal normalizing furnace slow cooling preheating, it is characterized in that: described air channel has from combustion flue top side, upper strata covers to the dividing plate of lower floor's combustion flue bottom side, the blast inlet of blower fan is the top of upper strata combustion flue, and the air outlet of blower fan passes straight through to the foraminous conveyer bottom of lower floor's combustion flue along dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435275.3U CN203999687U (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for isothermal normalizing furnace slow cooling preheating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435275.3U CN203999687U (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for isothermal normalizing furnace slow cooling preheating |
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| Publication Number | Publication Date |
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| CN203999687U true CN203999687U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420435275.3U Expired - Fee Related CN203999687U (en) | 2014-08-04 | 2014-08-04 | Heat exchanger for isothermal normalizing furnace slow cooling preheating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164546A (en) * | 2014-08-04 | 2014-11-26 | 苏州新凌电炉有限公司 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
-
2014
- 2014-08-04 CN CN201420435275.3U patent/CN203999687U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164546A (en) * | 2014-08-04 | 2014-11-26 | 苏州新凌电炉有限公司 | Heat exchanger for slow cooling and preheating of isothermal normalizing furnace |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |