CN108913858B - Heat treatment furnace with stable pressure - Google Patents
Heat treatment furnace with stable pressure Download PDFInfo
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- CN108913858B CN108913858B CN201810701176.8A CN201810701176A CN108913858B CN 108913858 B CN108913858 B CN 108913858B CN 201810701176 A CN201810701176 A CN 201810701176A CN 108913858 B CN108913858 B CN 108913858B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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Abstract
The present invention provides a pressure-stabilized heat treatment furnace including: a furnace body and a heating assembly; the furnace body is provided with a working cavity, the side wall of the furnace body is provided with an air inlet and an air outlet, the air inlet is communicated with the working cavity, and the air outlet is communicated with the working cavity; the heating assembly comprises a shell, an air return component and an air supply component, the shell is provided with a heating cavity, one end of the air supply component is communicated with the heating cavity, the other end of the air supply component is communicated with the air inlet, one end of the air return component is communicated with the heating cavity, and the other end of the air return component is communicated with the air outlet; wherein, the air supply quantity of the air supply component is less than the air return quantity of the air return component. Because the air supply volume of the air supply component is less than the air return volume of the air return component, the micro negative pressure control of the working cavity is realized, the outward expansion of the gas in the working cavity after heating is avoided, so that the loss of heat is reduced, the condition that the furnace body deforms due to the outward expansion of the gas after heating is also avoided, and the use safety of the heat treatment furnace is improved.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a heat treatment furnace with stable pressure.
Background
At present, in the related art, a heating cavity and a working cavity of a heat treatment furnace are provided, and the pressure in the heating cavity is the same as the pressure in the working cavity; when the gas is heated in the heating cavity of the heat treatment furnace, the gas flows into the working cavity and heats the workpiece in the working cavity, and meanwhile, the gas in the working cavity flows into the heating cavity, and the gas expands after being heated, so that the pressure in the working cavity is higher than the pressure in the heating cavity; when the gas in the heating cavity is in full load, the gas in the working cavity expands outwards due to overlarge pressure, so that heat in the heat treatment furnace is dissipated, the furnace body is deformed, and potential safety hazards are caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
Therefore, the invention provides a heat treatment furnace with stable pressure.
In view of the above, the present invention provides a pressure-stabilized heat treatment furnace, including: a furnace body and a heating assembly; the furnace body is provided with a working cavity, the side wall of the furnace body is provided with an air inlet and an air outlet, the air inlet is communicated with the working cavity, and the air outlet is communicated with the working cavity; the heating assembly comprises a shell, an air return component and an air supply component, the shell is provided with a heating cavity, one end of the air supply component is communicated with the heating cavity, the other end of the air supply component is communicated with the air inlet, one end of the air return component is communicated with the heating cavity, and the other end of the air return component is communicated with the air outlet; wherein, the air supply quantity of the air supply component is less than the air return quantity of the air return component.
In the technical scheme, firstly, a working cavity is arranged on a furnace body; then, an air inlet and an air outlet are arranged on the side wall of the furnace body, the air inlet is communicated with the working cavity, and the air outlet is connected with the working cavity, so that gas can circularly flow in the furnace body; then, one end of the air supply part is communicated with the heating cavity in the shell, and the other end of the air supply part is communicated with the air inlet, so that the air heated by the heating cavity is sent into the working cavity from the air inlet through the air supply part; simultaneously, one end of the air return component is communicated with the heating cavity, and the other end of the air return component is communicated with the air outlet, so that gas in the working cavity is discharged to the heating cavity from the air outlet through the air return component, the gas circularly flows in the furnace body, heat loss in the heat treatment furnace is reduced, the time and energy consumption for secondary heating of the gas are reduced, and the production cost is reduced. Because the air supply volume of the air supply part is less than the air return volume of the air return part, the micro negative pressure control of the working cavity is realized, the outward expansion of the gas in the working cavity after heating is avoided, so that the loss of heat is reduced, and meanwhile, the condition that the furnace body deforms due to the outward expansion of the gas after heating is also avoided, so that the use safety of the heat treatment furnace is improved, the service life of the heat treatment furnace is prolonged, and the use cost of products is reduced.
In addition, the heat treatment furnace in the above technical scheme provided by the invention can also have the following additional technical features:
in the above technical solution, preferably, the heating assembly further includes: a heating member; the heating part is connected with the shell and is arranged in the heating cavity, and the heating cavity is arranged at the side edge of the furnace body.
In this technical scheme, through being connected the heater block with the casing to improve the stability of heater block, simultaneously, set up the heater block in the heating chamber, and set up the side at the furnace body with the heating chamber, in order to realize the gas heating with in the heating chamber. By heating the gas and performing the heat treatment process on the workpiece in the heat treatment furnace by the heated gas, the workpiece can be heated more uniformly, and the heat treatment quality of the workpiece is improved.
In the above technical solution, preferably, the heating assembly further includes: a first fan and a second fan; the first fan is connected with the air supply component and arranged at the air inlet so as to adjust the air supply quantity; the second fan is connected with the air return component and arranged at the air outlet to adjust the air return quantity.
In the technical scheme, the first fan is connected with the air supply component and arranged at the air inlet to realize the adjustment of the air supply quantity; through being connected second fan and return air part to set up the second fan in air outlet department, with the realization volume of adjusting the return air. Because the air inlet amount and the air return amount are adjustable, the heat treatment furnace can adjust the heating temperature of the workpiece according to the specification and the number of the workpiece and the heat treatment process, the heat treatment quality of the workpiece can be improved, the applicability of the product can be improved, and the application range of the product is widened; and moreover, through adjusting the air intake and the air return quantity, the micro negative pressure control of the working cavity can be realized, the outward expansion of the gas in the working cavity after the gas is heated is avoided, so that the heat loss is reduced, and meanwhile, the condition that the furnace body is deformed due to the outward expansion after the gas is heated can be avoided, so that the use safety of the heat treatment furnace is improved, the service life of the heat treatment furnace is prolonged, and the use cost of the product is reduced.
In the above technical solution, preferably, the heating assembly further includes: a first pressure sensor and a second sensor; the first pressure sensor is connected with the furnace body, arranged in the working cavity and used for detecting the pressure in the working cavity; the second pressure sensor is connected with the heating cavity, arranged in the heating cavity and used for detecting the pressure in the heating cavity.
In the technical scheme, the first pressure sensor is connected with the furnace body, so that the stability of the first pressure sensor is improved; the first pressure sensor is arranged in the working cavity, so that the pressure in the working cavity is detected through the first pressure sensor, and the real-time monitoring of the pressure in the working cavity is realized; the second pressure sensor is connected with the heating cavity and arranged in the heating cavity, so that the second pressure sensor detects the pressure in the heating cavity; through setting up first pressure sensor and second pressure sensor not only can avoid taking place the condition emergence that the furnace body takes place to warp because of the too big messenger of working chamber and heating intracavity pressure, and then improved the heat treatment furnace and used the security, still can provide data reference for the little negative pressure control in working chamber and heating chamber, improve the accuracy nature to the little negative pressure control in working chamber and heating chamber.
In the above technical solution, preferably, the heating assembly further includes: a control device; the signal receiving end of the control device is respectively connected with the first pressure sensor and the second pressure sensor, the signal output end of the control device is respectively connected with the control end of the first fan and the control end of the second fan, and the control device is used for respectively controlling the rotating speeds of the first fan and the second fan according to the pressure values detected by the first pressure sensor and the second pressure sensor.
In the technical scheme, a signal receiving end of a control device is respectively connected with a first pressure sensor and a second pressure sensor, so that the control device receives pressure values detected by the first pressure sensor in a working cavity and the second pressure sensor in a heating cavity; the signal output end of the control device is respectively connected with the control end of the first fan and the control end of the second fan, so that the control device respectively controls the rotating speeds of the first fan and the second fan according to the pressure values detected by the first pressure sensor and the second pressure sensor, and micro-negative pressure control on the working cavity and the heating cavity is realized; the pressure in the working cavity is detected through the first pressure sensor, the pressure in the heating cavity is detected through the second pressure sensor, the accuracy of micro negative pressure control of the working cavity and the heating cavity can be improved, and therefore the quality of heat treatment of the heat treatment furnace on workpieces is improved.
In the above technical scheme, preferably, the housing is provided with an air outlet and a waste heat pipeline, the air outlet is communicated with the waste heat pipeline, and the waste heat pipeline is communicated with the top of the heating cavity to adjust the pressure and temperature in the heating cavity.
In this technical scheme, through set up air exit and waste heat pipeline on the casing, and be linked together air exit and waste heat pipeline, waste heat pipeline and the top intercommunication of heating chamber looks, in order to realize adjusting pressure and the temperature of heating intracavity, avoid heating the gas heating of intracavity and then expand outward, in order to reduce thermal scattering and disappearing, also can avoid simultaneously the gas heating to cause the condition of furnace body deformation to expand outward to take place, not only improved the security that heat treatment furnace used, heat treatment furnace's life has still been prolonged, thereby reduce the use cost of product.
In the above technical solution, preferably, the air inlet is located below the air outlet.
In the technical scheme, the gas rises after being heated, so that the air inlet is arranged below the air outlet, heated gas can flow into the air inlet and then flow out of the air outlet from the upper part, and the heated gas flows in the working cavity so as to heat a workpiece in the working cavity, thereby realizing a heat treatment process of the workpiece; by adopting the structure, the temperature in the working cavity can be more balanced, the temperature difference in heating the workpiece is avoided, and the quality of heat treatment of the workpiece is improved.
In the above technical solution, preferably, the number of the heating assemblies is at least one.
In this technical scheme, through setting the quantity of heating element to be one at least, can realize heating the gas in the heating chamber through a plurality of heating elements to improve the rate of heating to gas, thereby improve the work efficiency of heat treatment furnace.
In the above technical solution, preferably, the number of the heating assemblies is plural, and the plural heating assemblies are arranged along the length direction of the furnace body.
In this technical scheme, set up to a plurality ofly through the quantity with heating element, and arrange a plurality of heating element along the length direction of furnace body, in order to realize being in heating chamber mobile gas by a plurality of heating element in proper order, make gas reach the highest temperature in air intake department, in order to improve gaseous rate of heating, simultaneously, the realization makes the gas temperature in air intake department the same, avoid entering into the gas in the work chamber temperature difference appears, thereby reduce the calorific loss of heat treatment furnace, reduce the energy consumption of heat treatment furnace, improve the work efficiency of heat treatment furnace.
In the above technical solution, preferably, the heating component is a natural gas heating component, a gas heating component or an electric heating component.
In the technical scheme, the heating component is set as a natural gas heating component, a coal gas heating component or an electric heating component, so that the heat treatment furnace can heat gas by utilizing energy sources such as natural gas, coal gas or electricity, the applicability of the heat treatment furnace is improved, and the application range of the heat treatment furnace is expanded.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural view of a heat treatment furnace according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating the flow of gas in a heat treatment furnace according to an embodiment of the present invention;
wherein, the correspondence between the reference numbers and the component names in fig. 1 to 2 is:
the device comprises a furnace body 1, a working chamber 12, an air inlet 14, an air outlet 16, a heating assembly 2, a shell 22, an air return part 23, an air supply part 24, a heating chamber 25, a heating part 26 and a conveying device 3.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A heat treatment furnace according to some embodiments of the present invention will be described below with reference to fig. 1 to 2.
In an embodiment of the present invention, as shown in fig. 1, the present invention provides a pressure-stabilized heat treatment furnace including: a furnace body 1 and a heating assembly 2; the furnace body 1 is provided with a working cavity 12, the side wall of the furnace body 1 is provided with an air inlet 14 and an air outlet 16, the air inlet 14 is communicated with the working cavity 12, and the air outlet 16 is communicated with the working cavity 12; the heating assembly 2 comprises a shell 22, an air return component 23 and an air supply component 24, the shell 22 is provided with a heating cavity, one end of the air supply component 24 is communicated with the heating cavity, the other end of the air supply component is communicated with the air inlet 14, one end of the air return component 23 is communicated with the heating cavity, and the other end of the air return component is communicated with the air outlet 16; the amount of air supplied by the air supply member 24 is smaller than the amount of return air of the return air member 23.
In this embodiment, first, the furnace body 1 is provided with the working chamber 12; then, an air inlet 14 and an air outlet 16 are arranged on the side wall of the furnace body 1, the air inlet 14 is communicated with the working cavity 12, and the air outlet 16 is connected with the working cavity 12, so that the gas can circularly flow in the furnace body 1; then, one end of the air supply component 24 is communicated with the heating cavity in the shell 22, and the other end of the air supply component 24 is communicated with the air inlet 14, so that the air heated by the heating cavity is supplied to the working cavity 12 from the air inlet 14 through the air supply component 24; meanwhile, one end of the air return component 23 is communicated with the heating cavity, and the other end of the air return component 23 is communicated with the air outlet 16, so that the air in the working cavity 12 is discharged from the air outlet 16 to the heating cavity through the air return component 23, the circular flow of the air in the furnace body 1 is realized, the heat loss in the heat treatment furnace is reduced, the time and the energy consumption for secondarily heating the air are reduced, and the production cost is reduced. Because the air supply quantity of the air supply part 24 is less than the air return quantity of the air return part 23, the micro negative pressure control of the working cavity 12 is realized, the outward expansion of the gas in the working cavity 12 after heating is avoided, the loss of heat is reduced, meanwhile, the deformation of the furnace body 1 caused by the outward expansion of the gas after heating is also avoided, the use safety of the heat treatment furnace is improved, the service life of the heat treatment furnace is prolonged, and the use cost of the product is reduced.
Specifically, first, the workpiece is placed on the conveyor 3 of the feeding area; then, the first furnace door is opened, and the conveying device 3 is controlled to enable the workpiece to enter the working cavity 12 through the feeding hole; then, controlling the air supply part 24 to enable the gas heated by the heating cavity to enter the working cavity 12 through the air inlet 14 so as to heat the workpiece, and controlling the air return part 23 to enable the gas in the working cavity 12 to flow out through the air return opening so as to realize the circulation of the gas in the heat treatment furnace; then, after the workpiece is heated, controlling the conveying device 3 to enable the workpiece to enter a discharging area; and then, opening the second furnace door, and controlling the conveying device 3 to convey the workpiece to a quenching frame through a discharge hole to finish the quenching process.
In one embodiment of the present invention, preferably, as shown in fig. 2, the heating assembly 2 further includes: a heating member 26; the heating member 26 is connected to the housing 22 and disposed in the heating chamber, and the heating chamber 25 is disposed at a side of the furnace body 1.
In this embodiment, the heating member 26 is connected to the housing 22 to improve the stability of the heating member 26, and at the same time, the heating member 26 is disposed in the heating chamber, and the heating chamber 25 is disposed at the side of the furnace body 1 to heat the gas in the heating chamber. By heating the gas and performing the heat treatment process on the workpiece in the heat treatment furnace by the heated gas, the workpiece can be heated more uniformly, and the heat treatment quality of the workpiece is improved.
In one embodiment of the present invention, preferably, as shown in fig. 2, the heating assembly 2 further includes: a first fan and a second fan; the first fan is connected with the air supply component 24 and arranged at the air inlet 14 to adjust the air supply amount; the second fan is connected with the air return component 23 and arranged at the air outlet 16 to adjust the air return quantity.
In this embodiment, the air supply amount is adjusted by connecting the first fan with the air supply component 24 and arranging the first fan at the air inlet 14; the second fan is connected with the air return component 23 and arranged at the air outlet 16, so that the air return quantity can be adjusted. Because the air inlet amount and the air return amount are adjustable, the heat treatment furnace can adjust the heating temperature of the workpiece according to the specification and the number of the workpiece and the heat treatment process, the heat treatment quality of the workpiece can be improved, the applicability of the product can be improved, and the application range of the product is widened; moreover, by adjusting the air inlet volume and the air return volume, the micro negative pressure control of the working cavity 12 can be realized, the outward expansion of the gas in the working cavity 12 after heating is avoided, so that the loss of heat is reduced, and the deformation of the furnace body 1 caused by the outward expansion of the gas after heating can be avoided, so that the use safety of the heat treatment furnace is improved, the service life of the heat treatment furnace is prolonged, and the use cost of the product is reduced.
In one embodiment of the present invention, preferably, the heating assembly 2 further comprises: a first pressure sensor and a second pressure sensor; the first pressure sensor is connected with the furnace body 1, arranged in the working cavity 12 and used for detecting the pressure in the working cavity 12; the second pressure sensor is connected to the heating chamber 25, and disposed in the heating chamber 25 for detecting the pressure in the heating chamber 25.
In this embodiment, the stability of the first pressure sensor is improved by connecting the first pressure sensor with the furnace body 1; the first pressure sensor is arranged in the working cavity 12, so that the pressure in the working cavity 12 is detected through the first pressure sensor, and the pressure in the working cavity 12 is monitored in real time; the second pressure sensor is connected with the heating cavity 25 and is arranged in the heating cavity 25, so that the second pressure sensor detects the pressure in the heating cavity 25; through setting up first pressure sensor and second pressure sensor not only can avoid taking place the condition emergence that the deformation takes place for too big messenger furnace body 1 of working chamber 12 and heating chamber 25 internal pressure, and then improved the heat treatment furnace and used the security, still can provide data for the little negative pressure control of working chamber 12 and heating chamber 25 and refer to, improve the accuracy nature to the little negative pressure control of working chamber 12 and heating chamber 25.
In one embodiment of the present invention, preferably, the heating assembly 2 further comprises: a control device; the signal receiving end of the control device is respectively connected with the first pressure sensor and the second pressure sensor, the signal output end of the control device is respectively connected with the control end of the first fan and the control end of the second fan, and the control device is used for respectively controlling the rotating speeds of the first fan and the second fan according to the pressure values detected by the first pressure sensor and the second pressure sensor.
In this embodiment, the signal receiving end of the control device is respectively connected with the first pressure sensor and the second pressure sensor, so that the control device receives the pressure values detected by the first pressure sensor in the working chamber 12 and the second pressure sensor in the heating chamber 25; the signal output end of the control device is respectively connected with the control end of the first fan and the control end of the second fan, so that the control device respectively controls the rotating speeds of the first fan and the second fan according to the pressure values detected by the first pressure sensor and the second pressure sensor, and micro negative pressure control on the working cavity 12 and the heating cavity 25 is realized; the first pressure sensor is used for detecting the pressure in the working cavity 12, and the second pressure sensor is used for detecting the pressure in the heating cavity 25, so that the micro-negative pressure control accuracy of the working cavity 12 and the heating cavity 25 can be improved, and the heat treatment quality of the heat treatment furnace on workpieces can be improved.
In one embodiment of the present invention, the housing 22 is preferably provided with an air outlet and a waste heat pipe, the air outlet is communicated with the waste heat pipe, and the waste heat pipe is communicated with the top of the heating cavity to adjust the pressure and temperature in the heating cavity.
In this embodiment, through set up air exit and waste heat pipeline on casing 22, and be linked together air exit and waste heat pipeline, waste heat pipeline and the top intercommunication of heating chamber looks, in order to realize adjusting pressure and the temperature of heating intracavity, avoid heating the gas heating back of intracavity and expand outward, in order to reduce thermal scattering and disappearing, also can avoid simultaneously the gas heating back to expand outward and cause the condition emergence that furnace body 1 warp, not only improved the security that heat treatment furnace used, heat treatment furnace's life has still been prolonged, thereby reduce the use cost of product.
In one embodiment of the present invention, the intake vent 14 is preferably located below the outlet vent 16.
In this embodiment, since the gas rises after being heated, the air inlet 14 is disposed below the air outlet 16, so that the heated gas can flow into the air inlet 14 and flow out through the air outlet 16 above, and thus the heated gas flows in the working chamber 12, and further heats the workpiece in the working chamber 12, thereby implementing the heat treatment process on the workpiece; by adopting the structure, the temperature in the working cavity 12 can be more balanced, the temperature difference caused by heating the workpiece is avoided, and the quality of heat treatment of the workpiece is improved.
In one embodiment of the present invention, it is preferable that the number of the heating assemblies 2 is at least one.
In this embodiment, by setting the number of the heating assemblies 2 to be at least one, the gas in the heating cavity can be heated by the plurality of heating assemblies 2, so as to increase the heating speed of the gas, and thus the working efficiency of the heat treatment furnace is improved.
In one embodiment of the present invention, it is preferable that the number of the heating assemblies 2 is plural, and the plural heating assemblies 2 are arranged along the length direction of the furnace body 1.
In this embodiment, the number of the heating assemblies 2 is set to be plural, and the plural heating assemblies 2 are arranged along the length direction of the furnace body 1, so that the gas flowing in the heating cavity is sequentially heated by the plural heating assemblies 2, the gas reaches the highest temperature at the air inlet 14, the heating speed of the gas is increased, meanwhile, the temperature of the gas at the air inlet 14 is the same, the temperature difference of the gas entering the working cavity 12 is avoided, the heat loss of the heat treatment furnace is reduced, the energy consumption of the heat treatment furnace is reduced, and the working efficiency of the heat treatment furnace is improved.
In one embodiment of the present invention, heating element 26 is preferably a natural gas heating element, a gas heating element, or an electric heating element.
In this embodiment, the heating component 26 is a natural gas heating component, a gas heating component, or an electric heating component, so that the heat treatment furnace can heat gas by using energy sources such as natural gas, or electricity, thereby improving the applicability of the heat treatment furnace and expanding the application range of the heat treatment furnace.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A pressure stabilized heat treatment furnace, comprising:
the furnace body is provided with a working cavity, the side wall of the furnace body is provided with an air inlet and an air outlet, the air inlet is communicated with the working cavity, and the air outlet is communicated with the working cavity;
the heating assembly comprises a shell, an air return component and an air supply component, the shell is provided with a heating cavity, one end of the air supply component is communicated with the heating cavity, the other end of the air supply component is communicated with the air inlet, one end of the air return component is communicated with the heating cavity, and the other end of the air return component is communicated with the air outlet;
the heating assembly further comprises: the first fan is connected with the air supply component and arranged at the air inlet so as to adjust the air supply quantity; the second fan is connected with the air return component and arranged at the air outlet so as to adjust the air return amount;
the air supply quantity of the air supply component is less than the return air quantity of the return air component;
the first pressure sensor is connected with the furnace body, arranged in the working cavity and used for detecting the pressure in the working cavity;
the second pressure sensor is connected with the heating cavity, arranged in the heating cavity and used for detecting the pressure in the heating cavity;
the signal receiving end of the control device is respectively connected with the first pressure sensor and the second pressure sensor, the signal output end of the control device is respectively connected with the control end of the first fan and the control end of the second fan, and the control device is used for respectively controlling the rotating speeds of the first fan and the second fan according to the pressure values detected by the first pressure sensor and the second pressure sensor.
2. The pressure stabilized heat treatment furnace of claim 1, wherein the heating assembly further comprises:
the heating component is connected with the shell and arranged in the heating cavity, and the heating cavity is arranged at the side edge of the furnace body.
3. The pressure-stabilized heat treatment furnace according to claim 1,
be provided with air exit and waste heat pipeline on the casing, the air exit with waste heat pipeline is linked together, waste heat pipeline with the top in heating chamber is linked together, in order to adjust pressure and temperature in the heating chamber.
4. The pressure-stabilized heat treatment furnace according to claim 1,
the air inlet is positioned below the air outlet.
5. The pressure-stabilized heat treatment furnace according to any one of claims 1 to 4,
the number of the heating assemblies is at least one.
6. The pressure-stabilized heat treatment furnace according to claim 5,
the heating assembly is in a plurality of numbers, and the heating assemblies are arranged along the length direction of the furnace body.
7. The pressure-stabilized heat treatment furnace according to claim 2,
the heating component is a natural gas heating component, a coal gas heating component or an electric heating component.
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| CN108913858A (en) | 2018-11-30 |
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