CN113915992A

CN113915992A - Atmosphere-adjustable electricity-saving heating furnace with balanced temperature

Info

Publication number: CN113915992A
Application number: CN202111361310.2A
Authority: CN
Inventors: 郑辰; 夏祥松; 李凤路
Original assignee: Dezhou Aoshen Esep Technology Co ltd
Current assignee: Dezhou Aoshen Esep Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-01-11

Abstract

The invention discloses an atmosphere-adjustable electric heating furnace with balanced temperature, which comprises an equipment body, wherein the equipment body comprises an equipment frame structure and an equipment decoration panel, and the equipment decoration panel is fixedly arranged on the equipment frame structure; the device body is divided into an upper layer and a lower layer, the upper layer is provided with an electric heating furnace hearth, the lower layer is provided with a front control box, a storage box and a rear junction box, and the PLC control system is electrically connected with the device control panel; the bottom of the hearth of the electric heating furnace is provided with a heat exchange area filled with heat exchange materials, the lower inlet and outlet of the heat exchange area are respectively connected with an air inlet main pipe and an air outlet main pipe of atmosphere adjusting gas through gas pipelines and pipeline tee joints, and the atmosphere adjusting gas is supplied by an external air source. The electric heating furnace not only realizes the automatic regulation and control of the heating temperature, but also can automatically control the selection and supply amount of atmosphere regulating gas, and simultaneously solves two major factors in the oxidation sintering process engineering, namely the accurate regulation and control of the temperature and the atmosphere.

Description

Atmosphere-adjustable electricity-saving heating furnace with balanced temperature

Technical Field

The invention belongs to the technical field of refined oxidizing and sintering reaction equipment, and particularly relates to an atmosphere-adjustable electric heating furnace with balanced temperature.

Background

The regulation of atmosphere is an important part in the oxidation sintering process, especially in the sintering process of ceramic products, the temperature is only relied on, the requirements of specific physical and chemical properties are not met, the atmosphere is another decisive factor, the requirements of the atmosphere are as strict as the requirements of the temperature, and the two requirements are not indispensable.

The atmosphere has two manifestations, one is an oxidizing atmosphere and the other is a reducing atmosphere. The oxidizing atmosphere is generated by a complete combustion reaction, and the reducing atmosphere is generated by an incomplete combustion reaction.

In the firing process, heating and firing are carried out under the condition of fully supplying oxygen, and the condition is called as an oxidizing atmosphere, when the concentration of free oxygen in the hearth flue gas is 8% -10%, the condition is called as a strong oxidizing atmosphere, and when the concentration of free oxygen is 4% -5%, the condition is called as a common oxidizing atmosphere.

In the firing process, the furnace is heated and fired in an oxygen-deficient environment within a certain temperature range, which is called as a reducing atmosphere, the furnace flue gas is called as a weak reducing atmosphere when the concentration of free oxygen is less than 1% and the concentration of carbon monoxide is lower, and the furnace flue gas is called as a strong reducing atmosphere when the concentration of free oxygen is higher.

The firing colors of the ceramic materials with different component ratios have different sensitivity to atmosphere and are difficult to control in process, so that the products in the furnace can form different substances and artistic effects by adjusting the atmosphere of the furnace and the fluctuation of the temperature.

The firing atmosphere required by the oxidation firing process of different materials in different stages is different, and in order to realize fine operation, higher requirements are put forward on oxidation firing equipment, and heating equipment for oxidation firing at the present stage is provided with atmosphere regulating gas in a closed space to realize atmosphere control in a hearth. In the process of adjusting the furnace atmosphere, when an oxidizing atmosphere is needed, a certain amount of oxygen or air is introduced into the furnace to improve the oxygen concentration; when reducing atmosphere is needed, a certain amount of inert gas is introduced into the hearth to reduce the oxygen concentration, and meanwhile, the airflow disturbance in the hearth is realized. However, in the existing process, in the process of adjusting the atmosphere, the introduced gas, whether oxygen, air or inert gas is normal-temperature gas, when the introduced gas enters the hearth, the local quenching of the inner space of the hearth is caused, the temperature distribution in the whole hearth space is not uniform, and the regional quality difference of the internal fired products is easily caused.

If the atmosphere adjusting gas supplemented in the oxidation sintering process can be preheated in advance through one step, the temperature is increased to a temperature close to the oxidation temperature of the hearth and then enters the hearth space, the phenomenon of temperature imbalance of the inner space is avoided, the control of the oxidation sintering process is more refined, and the requirements of the sintering processes in different degrees can be met.

Disclosure of Invention

In order to solve the technical problems, the invention provides an atmosphere-adjustable electric heating furnace with balanced temperature, which preheats atmosphere adjusting gas by using a honeycomb ceramic heat accumulator material, so that the temperature of the atmosphere adjusting gas reaches the internal temperature requirement when the atmosphere adjusting gas enters a hearth space, thereby realizing the recycling of heat energy of discharged gas and improving the self temperature of the gas which enters the space in advance

In order to achieve the purpose, the invention provides the following technical scheme:

an atmosphere-adjustable electric heating furnace with balanced temperature comprises an equipment body, wherein the equipment body comprises an equipment frame structure and an equipment decoration panel, and the equipment decoration panel is fixedly arranged on the equipment frame structure; the device body is divided into an upper layer and a lower layer, the upper layer is provided with an electric heating furnace hearth, the lower layer is provided with a front control box, a storage box and a rear junction box, one side of the front control box and one side of the storage box are provided with a device control panel, the front control box and the storage box are used for installing a PLC (programmable logic controller) system and a high-temperature operation tool, and the PLC system is electrically connected with the device control panel;

the bottom of the hearth of the electric heating furnace is provided with a heat exchange area filled with heat exchange materials, the lower inlet and outlet of the heat exchange area are respectively connected with an air inlet main pipe and an air outlet main pipe of atmosphere adjusting gas through gas pipelines and pipeline tee joints, and the atmosphere adjusting gas is supplied by an external gas source.

Further, a hearth electrical heating unit is arranged in the hearth of the electrical heating furnace, hearth shaping plates are arranged around the hearth of the electrical heating furnace, and the hearth shaping plates are adjacent to each other and connected through bolts.

Further, the furnace chamber of the electric heating furnace is provided with a furnace door, the furnace door is connected with the equipment body through a quick opening and closing pressing door lock, and the furnace door is provided with a proximity inductive switch for detecting the closing state of the furnace door.

Furthermore, the bottom of the hearth of the electric heating furnace is provided with two gas inlet and outlet channel ports, wherein one is a gas inlet channel, and the other is a gas outlet channel.

Furthermore, a silicon carbide material burning bearing plate is laid at the bottom of the hearth of the electric heating furnace.

Further, the number of the heat exchange areas is two, and the heat exchange areas are respectively positioned below the two gas inlet and outlet channel ports.

Further, an atmosphere gas inlet stop valve and an atmosphere gas outlet stop valve are arranged on the lower inlet and outlet pipeline of the heat exchange area.

Furthermore, one end of the air inlet main pipe of the atmosphere adjusting gas is provided with a plurality of atmosphere gas supply branches, and each atmosphere gas supply branch is sequentially provided with a cut-off ball valve, an atmosphere adjusting gas flow regulating valve and an atmosphere adjusting gas flow meter; and an oxygen analyzer sensor is arranged on the gas outlet main pipe of the atmosphere adjusting gas.

Furthermore, a temperature sensing transmitter is mounted at the top of the hearth of the electric heating furnace and used for detecting the temperature change of the space in the hearth in real time.

Further, universal wheel type heavy anchor is installed at the bottom of the equipment body.

The invention has the beneficial effects that:

(1) according to the atmosphere-adjustable electric heating furnace with balanced temperature, the heating part, the atmosphere adjusting part, the gas preheating part and the automatic control part are integrated into a whole, the whole process is automatically controlled, the equipment is conveniently and fast designed, the heating efficiency is high, the heat loss is small, the economical and practical performance is high, and the popularization and the use of heating processes in various industries are facilitated;

(2) the atmosphere-adjustable electric heating furnace with balanced temperature realizes balanced control of the temperature of the internal space during atmosphere adjustment in the process of oxidizing and firing the electric heating furnace, and the equipment can meet special process requirements when aiming at a firing process of a fired product with strict requirements on atmosphere and temperature, thereby overcoming the defects of the existing equipment in the market;

(3) the temperature-balanced atmosphere-adjustable electric heating furnace provided by the invention not only realizes automatic adjustment and control of heating temperature, but also can detect the atmosphere type of an internal space through an oxygen analyzer at a flue gas outlet, thereby automatically controlling selection and supply of atmosphere adjusting gas, and simultaneously solving two major factors in the process engineering of oxidizing and firing, namely accurate adjustment and control of temperature and atmosphere.

Drawings

FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;

FIG. 2 is a schematic view of the internal structure of the apparatus of the present invention;

FIG. 3 is a schematic view of the structure of the furnace and its lower part of the apparatus of the present invention;

FIG. 4 is a schematic diagram of the working principle of the apparatus of the present invention;

in the figure: 1-temperature sensor, 2-equipment frame structure, 3-equipment decoration panel, 4-electric heating furnace hearth, 5-furnace door, 6-quick opening and closing pressing door lock, 7-equipment control panel, 8-rear junction box, 9-front control box and storage box, 10-heavy foot margin, 11-hearth shaping plate, 12-hearth bracket, 13-proximity inductive switch, 14-hearth electric heating unit, 15-gas inlet and outlet channel port, 16-heat exchange area, 17-atmosphere gas outlet stop valve, 18-atmosphere gas inlet stop valve, 19-gas pipeline, 20-oxygen analyzer sensor, 21-atmosphere regulation gas flow regulating valve and 22-atmosphere regulation gas flow meter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiment 1 an atmosphere-adjustable electric heating furnace with balanced temperature, the structure of which is shown in fig. 1-3, comprises an equipment body, the equipment body comprises an equipment frame structure 2 and an equipment decoration panel 3, and the equipment decoration panel 3 is fixedly arranged on the equipment frame structure 2; the frame structure 2 and the decoration panel 3 of the electric heating furnace equipment are both of sheet metal structures, the processing and manufacturing procedures are simple, the controllability of the overall equipment quality is high, the movement and the transportation are convenient, and the popularization and the application are facilitated;

considering that the electric heating furnace is heating equipment, hot air moves upwards, and components such as electric elements are protected from being influenced by high temperature, the overall layout of the equipment is that a hearth 4 of the electric heating furnace is arranged on the upper layer, a front control box and a storage box 9 and a rear junction box 8 are arranged on the lower layer, and in order to facilitate the installation of wiring, wiring and control elements of an electric heating part of the hearth of the electric heating furnace, the rear junction box 8 is further arranged to provide an installation space for the electric heating furnace. The front control box and the storage box 9 are mainly used for installing a PLC control system and electrical components, and meanwhile, small areas can be separated for storing high-temperature operation tools such as high-temperature gloves and clamps, and the front control box and the storage box are convenient to use;

an equipment control panel 7 is arranged on one side of the front control box and the storage box 9, and the PLC control system is electrically connected with the equipment control panel 7.

In order to keep the whole equipment stable and firm, the lower part of the hearth is provided with a hearth support 12, and the hearth support 12 is preferably assembled and fixed by aluminum profiles in a composition form, so that the supporting requirement can be met, the self weight can be reduced, and the disassembly and the assembly of workers can be facilitated when necessary;

the material of the hearth 4 of the electric heating furnace is made of a ceramic fiber cotton plate, a hearth electric heating unit 14 is arranged in the hearth 4 of the electric heating furnace, and the electric heating wire structure forming the hearth electric heating unit 14 is prefabricated in the ceramic fiber cotton plate while the electric heating wire structure is manufactured, and only the electric heating wire binding post is led out of the furnace body for heat preservation; the ceramic fiber material is selected, so that the ceramic fiber material has good heat insulation and heat preservation performance and light material weight, can effectively shorten the time of temperature rise and temperature reduction in the starting and closing processes of equipment, and is light in overall weight and beneficial to moving and carrying of the equipment;

for guaranteeing long-term, safe, the stable use of whole equipment, keep electric heating furnace 4's long-term design, all be provided with furnace stereotype board 11 around furnace, offset for guaranteeing the displacement that the steel sheet thermal deformation is heated, increase the steel sheet heat dissipation, all set up expansion joint, louvre on the stereotype board of each face as the circumstances, all fasten the installation through bolted connection between the furnace stereotype board 11, make things convenient for later maintenance, dismouting when changing to dismantle the installation

The electric heating furnace hearth 4 is provided with the furnace door 5, the furnace door 5 is connected with the equipment body through the quick opening and closing pressing door lock 6, the structure of the furnace door 5 is also made of a ceramic fiber cotton plate with a customized outline, the furnace door 5 is used as an access passage of an oxidation sintering product, the switch is used frequently, the door lock is preferably used for quickly opening and closing the pressing door lock 6 structure, the manual operation of operators is facilitated, and the tightness of the furnace door 5 can be ensured.

Because the electric heating furnace equipment is high-temperature oxidation equipment, workers are prevented from being scalded, as a safety protection measure, the proximity inductive switch 13 is arranged at the position where the furnace door 5 is closed in place, and when the furnace door 5 is not detected to be in place, the whole electric heating furnace equipment control system is completely in a stop state, so that unpredictable dangers are avoided.

The top of the hearth 4 of the electric heating furnace is provided with a temperature sensing transmitter 1 which is used for detecting the temperature change of the space in the hearth in real time and transmitting a temperature signal to a control system of an equipment control panel 7.

Two gas inlet and outlet channel openings 15 are formed in the bottom of the hearth 4 of the electric heating furnace, one of the gas inlet and outlet channel openings is a gas inlet channel, the other gas outlet channel is a gas outlet channel, and the flow direction of inlet and outlet gas is realized according to the opening and closing of a valve, so that two gas flow directions in the space in the hearth are provided, and when the two gas inlet and outlet channel openings 15 are distributed at two ends of the space in the hearth as much as possible, the uniform flow and heat transfer of gas flow in the whole space in the hearth are facilitated.

In order to ensure the integrity of the electric heating furnace hearth 4 in long-term use and avoid the abrasion and falling of the ceramic fibers at the bottom layer, a silicon carbide material burning bearing plate with proper thickness is laid on the bottom surface of the hearth and at the position avoiding the gas inlet and outlet passage port 15, so that the ceramic fibers are protected, and the integral uniform stress of the bottom surface of the hearth can be optimized.

The bottom of the electric heating furnace hearth 4 is provided with two heat exchange areas 16 filled with heat exchange materials, and the two heat exchange areas 16 are respectively positioned below the two gas inlet and outlet passage ports 15.

The atmosphere-adjustable electric heating furnace with balanced temperature can keep the temperature balance in the atmosphere adjusting process, mainly plays a role of a heat exchange area 16 on a hearth gas inlet and outlet channel, after the heat energy conversion of the heat exchange area, the gas entering a hearth is preheated to the temperature of the hearth from the normal temperature, the temperature of the gas led out of the hearth is reduced to the safety temperature slightly higher than the normal temperature from the furnace temperature, thereby not only recovering the heat energy, but also ensuring the personal and property safety during the operation of the equipment.

The heat exchange zone 16 can absorb and release heat energy, and needs to be filled with heat-storing materials, preferably, the equipment adopts a honeycomb ceramic heat accumulator as the heat exchange material, the material of the honeycomb ceramic heat accumulator can be divided into cordierite and mullite, different filling amounts can be calculated and installed according to different selected materials, and therefore the heat energy which is enough to enable the gas to reach the specified temperature rise can be stored and released.

The central part of the heat exchange area 16 is filled with a honeycomb ceramic heat accumulator heat exchange material, the heat exchange area is isolated and insulated from the outside through a ceramic fiber cotton plate and a ceramic fiber shaping plate, the shaping plate is also fastened and installed by adopting bolt connection, and the inspection and the maintenance are convenient when necessary.

The lower inlet and outlet of the heat exchange area 16 are respectively connected with an inlet manifold and an outlet manifold of atmosphere adjusting gas through a gas pipeline 19 and a pipeline tee joint, and the atmosphere adjusting gas is supplied by an external gas source. An atmosphere gas inlet stop valve 18 and an atmosphere gas outlet stop valve 17 are arranged on the lower inlet and outlet pipeline of the heat exchange zone 16. The on-off of the cut-off valve determines whether each heat exchange area 16 is air inlet or air outlet, thereby realizing the function switching of internal heat storage and heat release.

As a thermotechnical device capable of accurately adjusting internal heating atmosphere, the atmosphere adjustable electric heating furnace with balanced temperature can be respectively provided with a plurality of corresponding gas branches for accurately supplying atmosphere gas of each path according to the type of the atmosphere adjusting gas required by the heating furnace, each gas branch is sequentially provided with a cut-off ball valve, a flow regulating valve and a flow meter, the cut-off ball valve, the flow regulating valve and the flow meter are used for independently controlling and accurately measuring the supply flow of the atmosphere adjusting gas of each path, data support is provided for the accurate adjustment of the atmosphere of an internal space, and the opening and closing state of the valve, the opening degree of the flow regulating valve and the flow detection numerical value signals of the flow meter are all collected to a PLC control system of an equipment control panel 7 to participate in centralized coordination control.

Specifically, one end of an air inlet main pipe of atmosphere adjusting gas is provided with a plurality of atmosphere gas supply branches, and each atmosphere gas supply branch is sequentially provided with a cut-off ball valve, an atmosphere adjusting gas flow regulating valve 21 and an atmosphere adjusting gas flowmeter 22;

the atmosphere gas supply branches are arranged according to the actual required quantity, are arranged at the left side and the right side of the hearth support 12, and the interfaces of the gas pipes are arranged on the side equipment decoration panel 3 of the electric heating furnace through the plate penetrating clamping sleeves, so that the external gas cylinders or the supply pipelines can be conveniently arranged; the connection between the gas pipelines at the lower parts of the two heat exchange areas 16 adopts a stainless steel hose connection, so that the deformation release of the heated pipelines is facilitated, and the disassembly and the assembly are convenient.

An oxygen analyzer sensor 20 is arranged on the gas outlet header pipe of the atmosphere adjusting gas and used for detecting the oxygen content and the carbon monoxide content in the space in the hearth, providing basis for atmosphere adjustment, judging whether the atmosphere is an oxidizing atmosphere or a reducing atmosphere according to the oxygen content, selecting the attribute of the gas inlet gas and controlling the flow of the gas inlet gas through monitoring data, and realizing the atmosphere adjustment of the space in the hearth so as to meet the process requirements. The detection data signals are also acquired to a PLC control system of the equipment control panel 7 to participate in control.

Because of giving vent to anger hot-blast temperature and having passed through the heat transfer cooling, do not constitute safe danger, the hot-blast pipeline mouth of pipe of giving vent to anger can be kept somewhere in equipment decoration panel 3, has all seted up the louvre on all decoration panels 3 of whole equipment, gives vent to anger the louvre on the hot-blast accessible and draws forth equipment itself, so design makes whole equipment outward appearance level and smooth, succinct, compromises the function and beautifully, and masses' acceptance is high.

The touch screen, the emergency stop button, the indicating lamp, the alarm lamp and the ampere meter are arranged on the equipment control panel 7 as required, manual observation and operation are facilitated, and automatic and accurate operation can be realized in the whole process. All automatic control units in the equipment comprise adjustment of electric heating power, on-off control of an air inlet and outlet valve, detection data of a flowmeter and an oxygen analyzer sensor, and flow adjustment of a gas flow regulating valve, all control signals and detection signals are transmitted to a touch screen on an equipment control panel 7, manual and automatic control switching is achieved, and a human-computer interface is friendly.

Universal wheel type heavy anchor 10 is installed to equipment body bottom. The device is convenient to transport and move, and the device is fixed in place by adjusting the vertical support of the universal wheel of the heavy anchor 10 after being placed in place.

Referring to the schematic diagram of the working principle of fig. 4, it can be known that: the lower channel spaces of the two heat exchange areas are respectively provided with two gas pipeline branch pipes, one is a gas inlet pipeline, the other is a gas outlet pipeline, each gas pipeline is provided with a gas circuit cut-off valve, and the function of the gas circuit cut-off valve is to realize the periodic switching of the heat absorption and heat exchange functions of the two heat exchange areas through the opening and closing of the valve. The method specifically comprises the following steps: in the first period, air enters the No. 1 heat exchange area and exits the No. 2 heat exchange area, an air inlet cut-off valve of the No. 1 heat exchange area is opened, an air outlet cut-off valve is closed, an air inlet cut-off valve of the No. 2 heat exchange area is closed, an air outlet cut-off valve is opened, the honeycomb ceramic heat accumulator of the No. 1 heat exchange area releases heat and cools, and the honeycomb ceramic heat accumulator of the No. 2 heat exchange area absorbs heat and heats; in the second period, the No. 1 heat exchange area is used for discharging air and the No. 2 heat exchange area is used for feeding air, the No. 1 heat exchange area air inlet stop valve is closed, the air outlet stop valve is opened, the No. 2 heat exchange area air inlet stop valve is opened, the air outlet stop valve is closed, the No. 1 heat exchange area honeycomb ceramic heat accumulator absorbs heat to raise the temperature, and the No. 2 heat exchange area honeycomb ceramic heat accumulator releases heat to lower the temperature. The fixed switching interval time is set, so that the function switching between the first period and the second period is realized, namely, the preheating and warming effects of gas are realized, and the heat energy loss of the discharged gas is reduced.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The atmosphere-adjustable electric heating furnace with balanced temperature comprises an equipment body, and is characterized in that the equipment body comprises an equipment frame structure (2) and an equipment decoration panel (3), wherein the equipment decoration panel (3) is fixedly arranged on the equipment frame structure (2); the device body is divided into an upper layer and a lower layer, the upper layer is provided with an electric heating furnace hearth (4), the lower layer is provided with a front control box and a storage box (9) and a rear junction box (8), one side of the front control box and the storage box (9) is provided with a device control panel (7), the front control box and the storage box (9) are used for installing a PLC control system and a high-temperature operation tool, and the PLC control system is electrically connected with the device control panel (7);

the bottom of the electric heating furnace hearth (4) is provided with a heat exchange area (16) filled with heat exchange materials, the lower part inlet and outlet of the heat exchange area (16) are respectively connected with an inlet manifold and an outlet manifold of atmosphere adjusting gas through a gas pipeline (19) and a pipeline tee joint, and the atmosphere adjusting gas is supplied by an external gas source.

2. The temperature-balanced atmosphere-adjustable electric heating furnace according to claim 1, characterized in that a furnace electric heating unit (14) is arranged in the furnace chamber (4) of the electric heating furnace, furnace sizing plates (11) are arranged around the furnace chamber (4) of the electric heating furnace, and the adjacent furnace sizing plates (11) are connected through bolts.

3. The temperature-equalized atmosphere-adjustable electric heating furnace according to claim 1, characterized in that the furnace chamber (4) of the electric heating furnace is provided with a furnace door (5), the furnace door (5) is connected with the equipment body through a quick opening and closing pressing door lock (6), and the furnace door (5) is provided with a proximity inductive switch (13) for detecting the closing state of the furnace door.

4. The temperature-equalized atmosphere-adjustable electric heating furnace according to claim 1, characterized in that the bottom of the furnace chamber (4) of the electric heating furnace is provided with two gas inlet and outlet channel ports (15), one of which is a gas inlet channel and the other is a gas outlet channel.

5. The temperature-balanced electric heating furnace with adjustable atmosphere according to claim 4, characterized in that the bottom of the furnace chamber (4) of the electric heating furnace is paved with a silicon carbide material burning plate.

6. A temperature-equalized atmosphere tunable electric heating furnace according to claim 4, characterized in that the heat exchange areas (16) are two in number, respectively located below the two gas inlet and outlet passage ports (15).

7. A temperature equalized atmosphere tunable electric heating furnace according to claim 1, characterized in that an atmosphere gas inlet cut-off valve (18) and an atmosphere gas outlet cut-off valve (17) are provided on the lower inlet and outlet pipes of the heat exchange zone (16).

8. The temperature-equalized atmosphere adjustable electric heating furnace according to claim 1, wherein one end of the atmosphere adjusting gas inlet main pipe is provided with a plurality of atmosphere gas supply branches, and each atmosphere gas supply branch is sequentially provided with a cut-off ball valve, an atmosphere adjusting gas flow regulating valve (21) and an atmosphere adjusting gas flow meter (22); an oxygen analyzer sensor (20) is arranged on the gas outlet main pipe of the atmosphere adjusting gas.

9. The temperature-equalized atmosphere-adjustable electric heating furnace according to claim 1, characterized in that a temperature sensing transmitter (1) is installed on the top of the furnace chamber (4) of the electric heating furnace for detecting the temperature variation of the space in the furnace chamber in real time.

10. The temperature-equalized atmosphere-adjustable electric heating furnace according to claim 1, wherein universal wheel type heavy anchor feet (10) are mounted at the bottom of the equipment body.