WO2023001062A1

WO2023001062A1 - Heating furnace

Info

Publication number: WO2023001062A1
Application number: PCT/CN2022/105874
Authority: WO
Inventors: 安健; 李�浩; 王波
Original assignee: 苏州普热斯勒先进成型技术有限公司
Priority date: 2021-07-19
Filing date: 2022-07-15
Publication date: 2023-01-26
Also published as: CN115634983A

Abstract

A heating furnace comprising a furnace body, a first wall (1), a second wall (14), a first heating device and a conveying device. The first wall (1) and the second wall (14) are arranged inside the furnace body opposite each other in a first direction, and cooling liquid flows inside the first wall (1). The first heating device comprises a plurality of first heating elements arranged spaced apart from each other in a second direction, any one of the first heating elements (2) is arranged between the first wall (1) and the second wall (14), and a wiring end of any one of the first heating elements (2) penetrates the first wall (1). The conveying device comprises at least one transmission roller (9), any one transmission roller (9) is arranged between the first wall (1) and the second wall (14), and any one transmission roller (9) penetrates and extends from the first wall (1) so as to be in transmission connection with a first transmission device. The first direction is not parallel to or does not coincide with the second direction. The heating furnace can ensure that a plate rolls in from one side and rolls out from the other side, and continuous production is performed by means of high-beat heating, and in addition, elements in a side hearth work at a non-high temperature, such that the service life thereof is prolonged, and the deformation of a steel structure of the furnace body caused by high temperature can be reduced.

Description

heating furnace

Cross Reference Related References

This application claims the priority of the Chinese patent application with application number 2021108111623 and titled "Heating Furnace" filed on July 19, 2021, which is incorporated herein by reference.

technical field

The invention relates to the technical field of heating equipment, in particular to a heating furnace.

Background technique

At present, there are generally two types of high-strength steel materials in the automotive hot stamping industry, 22MnB5 coated plate and bare plate. Bare boards are used more and more because of their low price. Since the bare board will produce oxide skin after heating, the thermoforming production line on the market adopts a production process that inhibits the oxidation of the bare board. The method is to pass inert gas into the heating furnace to reduce the oxygen content. The low-oxygen environment can only slow down the oxidation rate of the bare board at high temperature, but cannot prevent the formation of scale, especially when the furnace gas is not mixed uniformly, the oxidation of the bare board will be aggravated, resulting in the surface of the bare board after thermoforming The quality can never reach the surface quality effect of the coated board after thermoforming, so there is a shot blasting and oil spraying process after the bare board is thermoformed, the purpose is to remove the oxide scale generated during thermoforming.

The oxide skin after thermoforming of the bare board is mainly composed of ferrous oxide, ferric oxide, and ferric oxide. It is brittle and has no extensibility. It is easy to crack and detach under mechanical action and thermal processing. And the hardness of the oxide skin is higher than that of the mold, so when the bare board is formed on the mold, the oxide skin on it will increase the friction between the bare board and the mold, increase the die loss of the mold, and reduce the service life of the mold. The formation of the bare board will reduce the formability of the bare board, making the bare board prone to strain. And the thermal conductivity of the scale is very low, which seriously affects the heat transfer between the bare board and the mold.

After the bare board is formed, shot blasting is required to remove the oxide skin, and shot blasting is to use the high-speed moving steel sand flow to continuously impact the surface of the bare board workpiece to remove the oxide skin. Continuous mechanical impact will easily cause unacceptable deformation of the parts, and its dimensional accuracy cannot be guaranteed. , For parts with thin wall thickness such as 1.0mm and below, the possibility of deformation is very high, especially for parts with poor rigidity such as door knockers, 100% of them will cause deformation. In addition, shot blasting will generate dust and have a greater impact on the environment.

At present, inert gas is introduced into the heating furnace to reduce the oxygen content, thereby suppressing the oxidation of the bare board. Most of the production methods use roller hearth long-line heating furnaces or box furnaces. The roller hearth long-line heating furnace has a long furnace body, a large floor area and a large furnace space. Most of the box-type heating furnaces have a 4-8-layer structure. Compared with the roller hearth long-line heating furnace, although the length of the box-type heating furnace is reduced, its height is increased, and the furnace volume is not greatly reduced.

For roller hearth long-line heating furnaces or box-type furnaces, neither of them has a sealed structure, and external air can enter the interior of the furnace. Due to the large space of the furnace, it is difficult to quickly establish a vacuum in the roller-hearth long-line heating furnace or box-type furnace. Therefore, both the roller hearth long-line heating furnace and the box-type heating furnace heat the bare board material in a protective gas atmosphere, which cannot prevent the generation of scale.

There is no cooling structure on the furnace wall of the roller hearth long-line heating furnace or the box furnace. The temperature rise of the steel structure of the furnace wall will affect the structural and functional parts of the furnace wall, and even cause the deformation of the furnace wall.

In summary, the auto parts industry urgently needs a heating furnace that can control the _O2 content to an extremely low level, so vacuum furnace heating is a good choice, but at present, there is no vacuum furnace applied to the hot stamping of high-strength steel for automobiles at home and abroad. In the production line, the main reason is that most of the vacuum furnaces on the market are cylindrical, periodic, and multi-cavity stepping, and the uniformity of heating temperature, production cycle, positioning accuracy and speed of continuous feeding and discharging, and maintainability are all critical. It cannot meet the production needs of ultra-high-strength steel for automobiles. Therefore, the auto parts industry urgently needs to develop a new vacuum heating furnace.

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application content

In order to overcome the defects in the prior art, the present invention provides a heating furnace, which can be connected in series by opening the furnace doors between multiple vacuum chambers to form a continuous high-temperature vacuum furnace with flat openings, and the plates are conveyed by dense ceramic rollers , the plate is rolled in from one side to the other and rolled out from the other side. The densely arranged heating elements meet the production cycle and temperature uniformity of a set of plate heating in 20 seconds. At the same time, a vacuum-sealed side furnace is installed with ceramic roller transmission elements and detection units. It can ensure that the components in the side furnace work at a non-high temperature, prolong their service life, and reduce the deformation of the steel structure of the furnace due to high temperature, ensure its structural strength, and facilitate the replacement of ceramic rollers.

The invention discloses a heating furnace, comprising:

Furnace body;

a first wall body and a second wall body, the first wall body and the second wall body are disposed opposite to the inside of the furnace body along a first direction, and cooling liquid flows inside the first wall body;

A first heating device, the first heating device includes a plurality of first heating elements arranged at intervals along the second direction, any one of the first heating elements is arranged between the first wall and the second wall During the interval, the terminal of any one of the first heating elements passes through the first wall; and

A transmission device, the transmission device can transmit materials along the second direction, the transmission device includes at least one transmission roller, any one of the transmission rollers is arranged between the first wall and the second wall , any one of the drive rollers passes through the first wall to be able to drive and connect with the first transmission device;

Wherein, the first direction is not parallel to or coincides with the second direction.

Preferably, cooling liquid is arranged in the second wall.

Preferably, the end surface of the first wall facing the second wall has thermal insulation material.

Preferably, the furnace body includes two side covers oppositely arranged along the first direction, two furnace doors oppositely arranged along the second direction, and a cover body and a seat oppositely arranged along the third direction, so The cover body, any one of the side covers and any one of the furnace doors have sealing rings on the peripheral sides, so that the inside of the furnace body can be kept in a sealed state, and any one of the furnace doors can be opposite to the furnace body. When opening and closing, the first direction, the second direction and the third direction are perpendicular to each other.

Further preferably, cooling liquid flows inside both the cover and the seat, the end face of the cover facing the first heating device has a thermal insulation material, and the end face of the seat facing the transmission device also has a Insulation Materials.

Further preferably, at least one pipeline is provided on the cover body, the outlet end of any one of the pipelines is located on the end surface of the cover body facing away from the first heating device, and the inlet end of any one of the pipelines is connected to the furnace. The interior of the body communicates, and the outlet end of the pipeline communicates with the vacuum device.

Further preferably, the cover is provided with a temperature measuring port that runs through its thickness direction, and a vacuum glass is provided at the temperature measuring port to be able to close the temperature measuring port, and a vacuum glass is provided between the vacuum glass and the cover. There is a sealing ring, and the vacuum glass is arranged on the end surface of the cover body facing away from the first heating device.

Preferably, the first wall has opposite first side walls and second side walls along the second direction, and the inside of the first wall is provided with a plurality of first partitions and a plurality of second partitions plate, a plurality of the first partitions and a plurality of the second partitions are arranged at intervals, and the opposite ends of any one of the first partitions and any one of the second partitions along the first direction are Connected to the first wall, any one of the first partitions is connected to the first side wall of the first wall, and any one of the first partitions is connected to the second side of the first wall There is a first preset distance between the walls, any one of the second partitions is connected to the second side wall of the first wall, and any one of the second partitions is connected to the first side wall of the first wall. There is a second preset distance between the side walls.

Preferably, the first wall is provided with a material intake, and the material intake sequentially passes through the corresponding first wall and the thermal insulation material on the first wall along the first direction, Materials are placed on the conveying device, and the material taking port is arranged corresponding to the material so as to be able to touch the material from the material taking port.

Preferably, the heating furnace includes at least one first thermocouple, and the measuring point of any one of the first thermocouples is set close to the first heating device.

The beneficial effects of the present invention are as follows:

The heating furnace of the present invention can drive and connect with the first transmission device by setting any one of the transmission rollers to pass through the first wall, so that the first transmission device is arranged in the first side furnace, and the first wall can play an isolation role. function, so as to protect the circuit of the first heating element and the first transmission device in the first side furnace. By setting the coolant flowing inside the first wall, it is possible to prevent the heat in the main furnace from being transferred to the first side furnace, thereby ensuring that the lines in the first side furnace and the first transmission device work at a non-high temperature, Extend its service life.

In the heating furnace of the present invention, cooling liquid flows inside the cover body, which reduces the deformation of the steel structure of the cover body due to high temperature and protects the sealing ring arranged around the cover body, thereby ensuring its structural strength and sealing effect. By arranging the cooling fluid flowing inside the seat body, the deformation of the steel structure of the seat body due to high temperature is reduced, and the structural strength thereof is ensured.

The heating furnace of the present invention can connect a plurality of heating furnaces through the open furnace door to form a continuous high-temperature furnace in series. The plates are rolled in from one side and rolled out from the other, and the heating elements arranged at intervals can evenly heat the plates, thereby realizing multiple Continuous high-tempo production of each furnace body improves production efficiency and product quality.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of heating furnace in the embodiment of the present invention;

Fig. 2 is the sectional view of heating furnace in the embodiment of the present invention;

Fig. 3 is the top view after removing the lid body of heating furnace in the embodiment of the present invention;

Fig. 4 is a schematic structural view of a side cover in an embodiment of the present invention;

Fig. 5 is a schematic structural view of a cover body in an embodiment of the present invention;

Fig. 6 is a sectional view of the cover body in the embodiment of the present invention;

Fig. 7 is a structural schematic diagram of a driving mechanism in an embodiment of the present invention;

Fig. 8 is a sectional view of the first wall body in the embodiment of the present invention;

Reference signs of the above drawings: 1-first wall; 101-first partition; 102-second partition; 2-first heating element; 201-circuit; 3-driving mechanism; 301-driving unit; 302-steel seat; 303-rotary dynamic sealing device; 304-transmission shaft; 4-cover body; 401-pipeline; 402-temperature measuring port; 403-vacuum degree measuring system; 5-side cover; 6-furnace door; 7-first thermocouple; 8-second thermocouple; 9-transmission roller; 10-material; 11-insulation material; 12-base; 13-feeding port; 14-second wall; 15 - Second heating element.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

With reference to accompanying drawing 1-8, present embodiment provides a kind of heating furnace, comprises:

Furnace body;

The first wall body 1 and the second wall body 14, the first wall body 1 and the second wall body 14 are disposed opposite to the inside of the furnace body along the first direction, and the inside of the first wall body 1 Coolant flows;

A first heating device, the first heating device includes a plurality of first heating elements 2 arranged at intervals along the second direction, any one of the first heating elements 2 is arranged on the first wall body 1 and the second wall body 1 Between the walls 14, the terminal of any one of the first heating elements 2 passes through the first wall 1; and

A transmission device, the transmission device can transmit the material 10 along the second direction, the transmission device includes at least one transmission roller 9, any one of the transmission rollers 9 is arranged on the first wall body 1 and the second wall body 1 Between the walls 14, any one of the transmission rollers 9 passes through the first wall 1 so as to be able to drive and connect with the first transmission device;

In this embodiment, the first wall 1 and the second wall 14 are arranged inside the body of furnace, so that the main furnace for heating is formed between the first wall 1 and the second wall 14, and the first wall 1 The side facing away from the end surface of the second wall 14 constitutes the first side furnace, and the side of the second wall 14 facing away from the end surface of the first wall 1 constitutes the second side furnace. Since the cooling liquid flows inside the first wall body 1 , the temperature in the furnace on the first side can be kept relatively low.

In this embodiment, the terminal of any one of the first heating elements 2 passes through the first wall 1, so that the line 201 connected to the terminal of any one of the first heating elements 2 can be placed in the first side furnace, In this embodiment, any one of the transmission rollers 9 is set to pass through the first wall 1 so as to be able to be connected with the first transmission device, so that the first transmission device is arranged in the first side furnace, and the first wall body 1 can play a role. The function of isolation protects the circuit 201 of the first heating element 2 and the first transmission device in the first side furnace.

In this embodiment, cooling liquid flows inside the first wall body 1, thereby preventing the heat in the main furnace from being transferred to the first side furnace, thereby ensuring that the circuit 201 and the first transmission device in the first side furnace are in the Work under high temperature to prolong its service life.

In this embodiment, the inside of the second wall body 14 also has a cooling fluid flowing therethrough, thereby keeping the temperature in the furnace at the second side relatively low.

The third direction described in this embodiment is a vertical direction, and both the first direction and the second direction are horizontal directions.

In this embodiment, the first heating device is arranged above the conveying device, and this embodiment further includes a second heating device, and the second heating device is arranged below the conveying device.

The first heating device includes a plurality of first heating elements 2 arranged side by side at intervals along the second direction, any one of the first heating elements 2 is wound with a heating wire, and any one of the first heating elements 2 is arranged along the first direction. The opposite ends of any one of the first heating elements 2 along the first direction are terminals, and the two terminals of any one of the first heating elements 2 are respectively installed in the first wall 1 and the second wall 14, by This enables the lines 201 connected to both ends of the first heating element 2 to be respectively placed in the first side furnace and the second side furnace, and thus can work at a non-high temperature.

The second heating device includes a plurality of second heating elements 15 arranged side by side at intervals along the second direction, any one of the second heating elements 15 is wound with a heating wire, and any one of the second heating elements 15 is arranged along the first direction. The opposite ends of any one of the second heating elements 15 along the first direction are terminals, and the two terminals of any one of the second heating elements 15 are respectively installed in the first wall 1 and the second wall 14, by This enables the lines 201 connected to the two ends of the second heating element 15 to be placed in the first side furnace and the second side furnace respectively, and thus can work at a non-high temperature.

In this embodiment, the transmission device includes a plurality of driving rollers 9 arranged side by side and at intervals along the second direction, and any one of the driving rollers 9 is arranged along the first direction. One end of any drive roller 9 passes through the first wall body 1 to be able to be connected to the first transmission device, and the other end passes through the second wall body 14 to be able to be connected to the second transmission device. In other words, the first transmission device is arranged in the first side furnace, and the second transmission device is arranged in the second side furnace.

Both ends of any one of the drive rollers 9 are provided with gears.

Multiple gears located on the same side of the transmission are connected by chains. In other words, the multiple gears located in the furnace on the first side are all connected by chains, and the multiple gears located in the furnace on the second side are also connected by chains. The first transmission device described in this embodiment is the gear and chain in the furnace on the first side, and the second transmission device is the gear and chain in the furnace on the second side.

The heating furnace in this embodiment also includes a driving mechanism 3 , and the driving mechanism 3 includes a driving unit 301 , a rotary dynamic sealing device 303 , a steel seat 302 and a transmission shaft 304 . The steel seat 302 is installed on one of the side covers 5, and the side cover 5 is provided with a mounting seat 501 for installing the steel seat 302, and the sealing connection between the mounting seat 501 and the steel seat 302 is realized by a sealing ring. The transmission shaft 304 is penetrated in the body of the furnace, and the transmission shaft 304 is connected with the gear at one end of one of the transmission rollers 9, thus, the transmission shaft 304 can drive one of the transmission rollers 9 to rotate, and under the transmission of the chain, Other driving rollers 9 can also rotate synchronously. The output end of the driving unit 301 is connected with a transmission shaft 304 through a rotary dynamic sealing device 303 . The rotary dynamic sealing device 303 is sheathed in the steel seat 302 , in other words, the steel seat 302 and the driving unit 301 are connected through the rotary dynamic sealing device 303 . A sealing ring is provided between the rotary dynamic sealing device 303 and the steel seat 302 to achieve a sealing effect.

In this embodiment, the end surface of the first wall body 1 facing the second wall body 14 has a thermal insulation material 11 . The end surface of the second wall body 14 facing the first wall body 1 also has the thermal insulation material 11 . In this way, the main furnace can be kept warm, heat loss can be reduced, and the temperature of the first side furnace and the second side furnace can be insulated to further reduce the temperature of the first side furnace and the second side furnace.

The furnace body includes two side covers 5 oppositely arranged along the first direction, two furnace doors 6 oppositely arranged along the second direction, and a cover body 4 and a base body oppositely arranged along the third direction. The surrounding sides of the body 4, any one of the side covers 5 and any one of the furnace doors 6 all have sealing rings, so that the inside of the furnace body can be kept in a sealed state, thereby improving the airtightness inside the furnace body. Any one of the furnace doors 6 can be opened and closed relative to the furnace body, and the first direction, the second direction and the third direction are perpendicular to each other. In this embodiment, when the furnace body is discharging, the furnace door 6 at the discharging end can be opened. When retrieving, the furnace door 6 at the retrieving end is opened. The inside of the furnace body can be kept in a sealed state, so that the inside of the furnace body can quickly form a vacuum state, and can continuously maintain the vacuum state.

The cover body 4 is arranged on the side of the end surface of the first heating device facing away from the transmission device, and the seat is arranged on the side of the end surface of the second heating device facing away from the transmission device. The cover body 4 Cooling liquid flows inside the seat body. By arranging that the cooling liquid flows inside the cover body 4, the deformation of the steel structure of the cover body 4 due to high temperature is reduced and the sealing ring arranged around the cover body 4 is protected, thereby ensuring its structural strength and sealing effect. By arranging the cooling liquid flowing inside the seat, the deformation of the steel structure of the seat due to high temperature is reduced, and the structural strength thereof is ensured.

The end surface of the cover body 4 facing the first heating device has an insulating material 11 , and the end surface of the seat body facing the second heating device also has an insulating material 11 . Thus, the main furnace can be kept warm to reduce heat loss, and the cover 4 and the seat can be insulated to reduce the temperature of the cover 4 and the seat to further reduce deformation.

The cover 4 is provided with at least one pipeline 401, the outlet end of any one of the pipelines 401 is located on the end face of the cover 4 facing away from the first heating device, and the inlet end of any one of the pipelines 401 is connected to the furnace. internal communication of the body. In other words, the inlet end of any one of the pipes 401 passes through the cover body 4 and the insulation material 11 on the cover body 4 , and communicates with the interior of the furnace body. The outlet end of the pipeline 401 communicates with a vacuum device, so that the vacuum device can vacuum the inside of the furnace body. A vacuum measurement system 403 communicating with the inside of the furnace body is also provided on the cover body 4 for real-time detection of the pressure value in the furnace body.

A temperature measuring port 402 is provided on the cover body 4 through its thickness direction, and a vacuum glass is provided at the temperature measuring port 402 so as to be able to close the temperature measuring port 402 . The vacuum glass is arranged on the end surface of the cover body 4 facing away from the first heating device. By setting the temperature measuring port 402, the temperature measuring device can be extended into the furnace body from the temperature measuring port 402, and then the temperature inside the furnace body can be tested, so as to monitor the temperature in the furnace body in real time. In this embodiment, the temperature measuring port 402 is set between two adjacent first heating elements 2 in the first heating device, so that the temperature measuring device can pass through the first heating device to monitor the temperature of the material 10 in real time.

The first wall 1 has opposite first sidewalls and second sidewalls along the second direction, and the inside of the first wall 1 is provided with a plurality of first partitions 101 and a plurality of second partitions 102, and the interior of the first wall 1 is provided with multiple first partitions 101 and multiple second partitions 102. A plurality of first partitions 101 and a plurality of second partitions 102 are arranged at intervals. The opposite ends of any one of the first partitions 101 along the first direction are connected to the first wall 1, and the opposite ends of any one of the second partitions 102 along the first direction are connected to each other. It is connected with the first wall body 1 . Any one of the first partitions 101 is connected to the first side wall of the first wall 1 and there is a second partition between any one of the first partitions 101 and the second side wall of the first wall 1 A preset distance, any one of the second partitions 102 is connected to the second side wall of the first wall 1 and any one of the second partitions 102 is connected to the first side of the first wall 1 There is a second preset distance between the walls. By arranging a plurality of first partitions 101 and a plurality of second partitions 102, the inside of the first wall 1 is divided into a plurality of cooling liquid passages, and the cooling liquid in each cooling liquid passage passes through the first partition 101 It communicates with the second side wall of the first wall 1, and can communicate between the second partition 102 and the first side wall of the first wall 1, thus, the cooling liquid in the first wall 1 The flow direction is a curved "S" shape, which makes the distribution of the cooling liquid in the first wall 1 more uniform, thereby improving the cooling effect. The interior of the first wall body 1 communicates with the outside through pipelines, so as to inject cooling liquid into the first wall body 1 .

The internal structure of the second wall 14 is the same as that of the first wall 1 , thus, the flow direction of the cooling liquid in the second wall 14 is a curved "S" shape, so that the cooling liquid flows in the second wall 14 The distribution inside is more uniform, thereby improving the cooling effect.

A plurality of third partitions and a plurality of fourth partitions are provided inside the cover body 4 . The cover body 4 has a third side wall and a fourth side wall oppositely disposed along the second direction. A plurality of third partitions and a plurality of fourth partitions are arranged at intervals inside the cover body 4 . The opposite ends of any third partition along the third direction are connected to the cover body 4 , and the opposite ends of any fourth partition along the third direction are connected to the cover body 4 . Any one of the third partitions is connected to the third side wall of the cover 4 , and there is a third preset distance between any one of the third partitions and the fourth side wall of the cover 4 . Any one of the fourth partitions is connected to the fourth side wall of the cover 4 , and there is a fourth preset distance between any one of the fourth partitions and the third side wall of the cover 4 . Thus, the flow direction of the cooling liquid in the cover body 4 is a curved "S" shape, so that the distribution of the cooling liquid in the cover body 4 is more uniform. The internal structure of the base 12 is the same as that of the cover 4 , and the flow direction of the coolant inside the base 12 is also curved in an "S" shape.

The first wall 1 is provided with a material taking port 13, and the material taking port 13 runs through the corresponding wall and the thermal insulation material 11 on the wall along the first direction in sequence, and the conveying device is The material 10 is placed, and the material intake 13 is set corresponding to the material 10 so that the material 10 can be touched from the material intake 13 . Specifically, the material 10 is located above the conveying device, and the material taking port 13 is arranged between the first heating device and the material 10 . The material intake 13 extends along the second direction. When the material 10 cannot move forward or backward on the conveying device, the material 10 in the main furnace can be taken out from the side by opening the material intake 13 .

A baffle is provided on the material intake 13 for closing the material intake 13 . An insulating material 11 is also provided on the end face of the baffle plate facing the main furnace.

The furnace comprises at least one first thermocouple 7 and at least one second thermocouple 8 . The measuring point of any one of the first thermocouples 7 is set close to the first heating device, and the measuring point of any one of the second thermocouples 8 is set close to the second heating device.

The first thermocouple 7 is installed on the cover 4, and the test end of the first thermocouple 7 passes through the cover 4 and the heat insulating material 11 on the cover 4, so that the measuring point of the first thermocouple 7 is close to the first heating device. The second thermocouple 8 is installed on the base body, and the test end of the second thermocouple 8 passes through the base body and the heat insulating material 11 on the base body, so that the measuring point of the second thermocouple 8 is close to the second heating device. Thus, the first thermocouple 7 and the second thermocouple 8 can measure the temperature of the first heating device and the second heating device in real time, so as to facilitate the temperature control of the two first heating devices and the second heating device.

The heating furnaces in this embodiment can be connected in series to form a continuous high-temperature furnace. The high-temperature furnace includes a plurality of heating furnaces arranged in sequence, wherein the conveying device in one of the heating furnaces is located downstream of the conveying device in the adjacent heating furnace, so that the material 10 can be transported in a plurality of the heating furnaces. circulated in the heating furnace. Specifically, the furnace doors 6 of multiple heating furnaces are opened, and the multiple heating furnaces are connected through the opened furnace doors 6 to form a continuous high-temperature furnace in series, thereby realizing simultaneous production of multiple furnace bodies and improving production efficiency.

In this embodiment, the furnace body has a box-shaped structure, which can greatly reduce the height and space occupancy of the furnace body. A first heating device and a second heating device are respectively arranged above and below the conveying device to ensure that the material 10 is evenly heated during the heating process in the main furnace. By arranging the main furnace, the first side furnace and the second side furnace, and setting the first wall body 1 and the second wall body 14 with cooling liquid flowing inside, heat can be prevented from being transferred from the main furnace chamber to the first side furnace chamber and the second side furnace chamber. The side furnace ensures that the first side furnace and the second side furnace are in a low-temperature environment, enables the first transmission device and the second transmission device to operate normally, and can protect the circuit 201 of the first heating device and the second heating device.

The principle of the present invention and the implementation mode have been set forth in the present invention by using specific embodiments, and the description of the above embodiments is only used to help understand the technical scheme and core idea of the present invention; meanwhile, for those of ordinary skill in the art, according to The idea of the present invention will have changes in specific implementation methods and application ranges. To sum up, the contents of this specification should not be construed as limiting the present invention.

Claims

A heating furnace is characterized in that it comprises:

Furnace body;

a first wall body and a second wall body, the first wall body and the second wall body are disposed opposite to the inside of the furnace body along a first direction, and cooling liquid flows inside the first wall body;

A first heating device, the first heating device includes a plurality of first heating elements arranged at intervals along the second direction, any one of the first heating elements is arranged between the first wall and the second wall During the interval, the terminal of any one of the first heating elements passes through the first wall; and

A transmission device, the transmission device can transmit materials along the second direction, the transmission device includes at least one transmission roller, any one of the transmission rollers is arranged between the first wall and the second wall , any one of the drive rollers passes through the first wall to be able to drive and connect with the first transmission device;

Wherein, the first direction is not parallel to or coincides with the second direction.
The heating furnace according to claim 1, characterized in that a cooling liquid is arranged inside the second wall.
The heating furnace according to claim 1, wherein the end surface of the first wall facing the second wall has an insulating material.
The heating furnace according to claim 1, wherein the furnace body comprises two side covers oppositely arranged along the first direction, two furnace doors oppositely arranged along the second direction, and The cover body and the seat body which are arranged in opposite directions, the cover body, any one of the side covers and any one of the furnace doors have sealing rings on the peripheral side, so that the inside of the furnace body can be kept in a sealed state, any One of the furnace doors can be opened and closed relative to the furnace body, and the first direction, the second direction and the third direction are perpendicular to each other.
The heating furnace according to claim 4, wherein cooling liquid flows inside both the cover body and the seat body, and the end surface of the cover body facing the first heating device has an insulating material, the The end surface of the base body facing the transmission device also has heat insulating material.
The heating furnace according to claim 4, wherein at least one pipeline is provided on the cover body, and the outlet end of any one of the pipelines is located on the end surface of the cover body facing away from the first heating device, any The inlet end of one of the pipes communicates with the interior of the furnace body, and the outlet end of the pipe communicates with the vacuum device.
The heating furnace according to claim 4, wherein the cover body is provided with a temperature measuring port through its thickness direction, and the temperature measuring port is provided with a vacuum glass to be able to close the temperature measuring port, so A sealing ring is provided between the vacuum glass and the cover, and the vacuum glass is provided on the end surface of the cover facing away from the first heating device.
The heating furnace according to claim 1, wherein the first wall has opposite first side walls and second side walls along the second direction, and the inside of the first wall is provided with multiple A first partition and a plurality of second partitions, a plurality of the first partitions and a plurality of the second partitions are arranged at intervals, any one of the first partitions and any one of the second partitions Both opposite ends along the first direction are connected to the first wall, any one of the first partitions is connected to the first side wall of the first wall, and any one of the first partitions There is a first preset distance from the second side wall of the first wall, any one of the second partitions is connected to the second side wall of the first wall, and any one of the second partitions There is a second preset distance between the board and the first side wall of the first wall.
The heating furnace according to claim 1, wherein the first wall is provided with a material intake, and the material intake sequentially penetrates the corresponding first wall and the first wall along the first direction. As for the thermal insulation material on the first wall, materials are placed on the conveying device, and the material taking port is set corresponding to the material so as to be able to touch the material from the material taking port.
The heating furnace according to claim 1, characterized in that the heating furnace comprises at least one first thermocouple, and the measuring point of any one of the first thermocouples is set close to the first heating device.