Angle-adjustable medium-frequency induction heating furnace and using method thereof

Abstract

The invention discloses an angle-adjustable medium-frequency induction heating furnace and a using method thereof, and belongs to the technical field of design of medium-frequency furnaces. The medium-frequency induction heating furnace comprises a furnace body movably supported on a furnace body support, and the furnace body is horizontally placed when not working. An inlet of the furnace body is of an upward inclined structure; the furnace body sequentially comprises a furnace lining structure, an induction coil and a furnace shell from inside to outside; the induction coil is connected with a medium-frequency power supply module, and the medium-frequency power supply module is connected with a digital control system. The using method comprises the steps that during working, the furnace body support is moved into a slag well, then the furnace body is rotated, the angle of the furnace body on the furnace body support is adjusted, an inlet of the furnace body is perpendicularly aligned with the slag liquid flowing direction, the position of the furnace body support is fixed, and the furnace body is locked. The furnace body bracket and the furnace body are reasonable in structural design, so that the angle adjustment operation of the furnace body is simple and convenient. And the reasonable design of the furnace body is also beneficial to reduction of heat radiation and noise pollution, and the environmental protection performance of the equipment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medium frequency furnace design, and relates to an angle-adjustable medium frequency induction heating furnace and a use method thereof. Background Art

[0002] In the industrial production process, especially in the process of high-temperature liquid slag treatment, such as steel smelting, non-ferrous metal smelting and other industries, the treatment of liquid slag has always been a key technology. Liquid slag is not only high in temperature, but also has the characteristics of strong fluidity and easy splashing, which brings great challenges to safe treatment and resource recovery. Traditional treatment methods often have problems such as low efficiency, environmental pollution and safety hazards. After the liquid slag flows out of the high-temperature furnace, the temperature drops below about 1360℃ and begins to solidify, and the fluidity decreases. Therefore, how to maintain the high temperature during the slag liquid drainage is also urgently needed. The liquid slag contains a lot of heat energy. Once the cooling rate is too fast or the ambient temperature drops, the liquid slag will solidify rapidly to form a hard solid block, which is difficult to drain through pipes or other equipment. The solidified liquid slag not only blocks the drainage channel, but also may damage the equipment and increase maintenance costs. Traditional drainage methods rely on natural gravity or simple mechanical devices, which are not effective for high-viscosity or easy-to-solidify liquid slag. During the drainage process, the temperature of the liquid slag drops rapidly, which increases the risk of solidification. The heat and harmful gases released during the liquid slag treatment process need to be properly managed to avoid environmental pollution and personal injury. The drainage operation needs to ensure the safety of the operator and avoid direct contact with the high-temperature liquid slag. In order to solve the above problems, technicians in this field have proposed an innovative technical solution - using a medium frequency furnace for heating and drainage. With its efficient and flexible heating characteristics, the medium frequency furnace has become an ideal choice to prevent the liquid slag from solidifying and ensure smooth drainage.

[0003] In the modern metallurgical and casting industry, medium frequency furnaces are important melting and refining equipment and are widely used in the smelting and casting processes of various metals. However, when treating slag liquid in the slag pit, there are often some problems in the operation of traditional medium frequency furnaces, such as poor drainage of slag liquid, easy blockage of slag mouth, and easy erosion of furnace lining by high-temperature slag liquid. When traditional medium frequency furnaces treat slag liquid in the slag pit, due to factors such as poor fluidity of slag liquid and unreasonable design of slag mouth, the drainage of slag liquid is often poor, and even the slag mouth is blocked. This not only affects the slag discharge efficiency, but also may cause the pressure in the furnace to increase, increasing safety hazards. The high temperature characteristics of slag liquid put forward extremely high requirements on the lining material. Under the erosion of high-temperature slag liquid, traditional lining materials are prone to cracks, peeling and other phenomena, shortening the service life of the lining and increasing production costs. In the process of slag liquid treatment, due to insufficient operational flexibility, it is difficult to adjust the angle and speed of slag liquid drainage according to actual needs in the traditional medium frequency furnace, which limits the improvement of production efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem that the performance of the medium frequency furnace in the prior art cannot meet the working conditions for heating and draining slag liquid, and to provide an angle-adjustable medium frequency induction heating furnace and a method for using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides an angle-adjustable medium-frequency induction heating furnace, comprising a furnace body movably supported on a furnace body bracket, wherein the furnace body is placed horizontally when not in operation; the entrance of the furnace body is an upwardly inclined structure; the furnace body comprises a furnace lining structure, an induction coil and a furnace shell from the inside to the outside; the induction coil is connected to a medium-frequency power supply module, and the medium-frequency power supply module is connected to a digital control system.

[0006] Further improvements are: The furnace shell is made of stainless steel.

[0007] The furnace lining structure comprises, from the inside to the outside, a mullite+rare earth casting tube, a graphite tube and a mullite tube.

[0008] The mullite+rare earth casting pipe located at the outlet end of the furnace body extends out of the furnace shell to prevent the high-temperature fluid in the furnace body from flowing into the furnace lining structure.

[0009] A trumpet-shaped inlet structure is arranged at the inlet of the furnace body; a center line of the trumpet-shaped inlet structure forms an angle of 45° with a center line of the furnace shell.

[0010] The trumpet-shaped inlet structure is made by casting with heat-insulating material.

[0011] Temperature measuring points are arranged on the outer wall surface of the furnace shell at positions close to the outlet and the inlet, and temperature measuring thermocouples are arranged at the temperature measuring points; the temperature measuring thermocouples are connected to a digital control system; the temperature measuring thermocouples are R-grade or S-grade.

[0012] A temperature sensor is integrated inside the induction coil, and the temperature sensor is connected to a digital control system.

[0013] The lower part of the furnace body support is provided with walking wheels.

[0014] In a second aspect, the present invention discloses a method for using the above-mentioned angle-adjustable medium-frequency induction heating furnace, comprising: During operation, the furnace body support is moved into the slag pit, and then the furnace body is rotated to adjust the angle of the furnace body on the furnace body support so that the inlet of the furnace body is vertically aligned with the direction of slag liquid flow, and the position of the furnace body support is fixed and locked to lock the furnace body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses an angle-adjustable medium-frequency induction heating furnace. The invention realizes the adjustability of the angle of the furnace body by designing a furnace body that is movably supported on a furnace body bracket. This design enables the heating furnace to adjust the inclination angle of the furnace body according to different working conditions, so as to better adapt to the operation of heating and draining slag liquid, and improves the flexibility and applicability of the equipment. The inlet of the furnace body is designed as an upwardly inclined structure, which is conducive to the smooth inflow of slag liquid and the uniform distribution during the heating process. At the same time, the furnace lining structure, induction coil and furnace shell arranged in sequence from the inside to the outside of the furnace body, and the connection between the induction coil and the medium-frequency power supply module ensure efficient energy transfer during the heating process and improve the heating efficiency. By connecting the digital control system of the medium-frequency power supply module, the invention realizes precise control of the heating process. The digital control system can automatically adjust the output power and frequency of the medium-frequency power supply according to the preset heating parameters, so as to realize precise control of the heating temperature and improve the stability and reliability of the heating process. The furnace body bracket and the furnace body structure of the invention are reasonably designed, so that the angle adjustment operation of the furnace body is simple and convenient. At the same time, the introduction of the digital control system also simplifies the operation steps of the heating process, reduces the operation difficulty and labor cost. Since the present invention improves the heating efficiency and intelligent control level, the energy consumption in the heating process is reduced, and unnecessary heat loss and environmental pollution are reduced. In addition, the reasonable design of the furnace body also helps to reduce heat radiation and noise pollution, and improves the environmental performance of the equipment.

[0016] Furthermore, by adopting a composite furnace lining structure composed of mullite + rare earth casting tubes, graphite tubes and mullite tubes, the present invention significantly improves the high temperature resistance and thermal shock resistance of the furnace lining. The addition of mullite and rare earth elements enhances the thermal stability and chemical stability of the material, while the graphite tube provides good thermal conductivity and corrosion resistance, so that the furnace lining structure can withstand higher heating temperatures and more drastic temperature changes, extending the service life of the furnace body. The design of the mullite + rare earth casting tube at the outlet end of the furnace body extending out of the furnace shell effectively prevents the high-temperature fluid (such as molten metal or slag liquid) in the furnace body from directly flowing into the furnace lining structure. This design not only protects the furnace lining structure from erosion and damage by the high-temperature fluid, but also ensures the smooth discharge of the high-temperature fluid, thereby improving the safety and stability of the heating furnace. The optimized furnace lining structure and high-temperature fluid protection measures help reduce heat loss and energy waste, so that the heating furnace can more efficiently utilize the energy provided by the medium frequency power supply for heating. This not only improves the heating efficiency, but also reduces energy consumption and operating costs. By adopting high-performance furnace lining materials and reasonable design structures, the present invention enhances the overall reliability and durability of the heating furnace. This enables the heating furnace to operate stably under harsh working conditions, reducing the failure rate and maintenance costs. Since the heating furnace provided by the present invention has excellent high temperature resistance, thermal shock resistance and high temperature fluid protection capabilities, it can be applied to the heating treatment of more types of metals and slag liquids. This broadens the application range of the heating furnace, enabling it to meet the heating needs of more industries and fields.

[0017] Furthermore, the trumpet-shaped inlet structure is arranged at the inlet of the furnace body, and its center line forms an angle of 45° with the center line of the furnace shell. This design optimizes the fluid introduction path. It allows the fluid to enter the furnace body more smoothly and evenly, reduces the impact and vortex of the fluid at the inlet, thereby improving the heating efficiency and the uniformity of fluid treatment. The trumpet-shaped inlet structure is cast with insulating materials, and this design effectively reduces the heat loss from the inlet of the furnace body. The insulating material has good thermal insulation performance and can block the high-temperature heat inside the furnace body from being transferred outward, thereby improving the thermal efficiency and energy utilization of the heating furnace. The design of the trumpet-shaped inlet structure not only optimizes the fluid introduction, but also enhances the structural stability at the inlet of the furnace body. Its unique shape and the use of insulating materials enable the inlet structure to withstand higher temperatures and pressures, reduce deformation and damage caused by temperature changes, and extend the service life of the furnace body. By optimizing the fluid introduction path and reducing heat loss, the trumpet-shaped inlet structure also improves the operational safety of the heating furnace. It reduces the accumulation and splashing of fluid at the inlet, lowers the risk of fire and scalding caused by fluid overflow or splashing, and makes the heating furnace safer and more reliable during operation.

[0018] Furthermore, temperature measuring points are set on the outer wall of the furnace shell near the outlet and inlet ends, and R-class or S-class temperature measuring thermocouples are equipped to accurately monitor the temperature inside the heating furnace. R-class and S-class thermocouples are suitable for a higher operating temperature range, up to 0℃-1600℃, which fully meets the measurement requirements for the temperature of liquid slag. R-class or S-class temperature measuring thermocouples have high precision and stability, can accurately reflect the changes in the temperature in the furnace, and provide reliable data support for the digital control system. The digital control system receives and analyzes the temperature data provided by the R-class or S-class temperature measuring thermocouples, and can accurately control the heating process. The system can automatically adjust the output power and frequency of the medium frequency power supply according to the preset temperature curve and heating parameters, thereby optimizing the heating process and ensuring the stability and uniformity of the temperature in the furnace. Accurate temperature monitoring and optimized heating process help improve product quality. During the heating process, accurate control of the temperature in the furnace can ensure that the metal or slag liquid reaches an ideal temperature state during the heating process, thereby improving its physical and chemical properties and improving the quality and consistency of the product. By monitoring the temperature in the furnace in real time, the digital control system can detect and warn of potential faults in a timely manner. For example, when the temperature in the furnace rises or drops abnormally, the system can sound an alarm to remind the operator to take corresponding measures to prevent the occurrence of faults and ensure the safe operation of the heating furnace. Accurate temperature monitoring and optimized heating process help reduce energy consumption and costs. By accurately controlling the heating process, unnecessary energy waste can be reduced and energy utilization can be improved. At the same time, the optimized heating process can also reduce the oxidation and burning of metal or slag liquid, reduce raw material consumption and production costs.

[0019] Furthermore, a temperature sensor is integrated inside the induction coil to monitor the working temperature of the induction coil in real time. This design enables the digital control system to obtain the most direct temperature information of the induction coil, so as to more accurately understand the temperature status inside the heating furnace. Through the real-time monitoring and analysis of the temperature of the induction coil by the digital control system, the output power of the medium frequency power supply can be automatically adjusted to ensure that the induction coil operates within the optimal temperature range. This helps to reduce energy waste, improve heating efficiency, and extend the service life of the induction coil. The temperature sensor integrated inside the induction coil can also effectively prevent the occurrence of overheating faults. When the temperature of the induction coil exceeds the preset safety threshold, the digital control system can immediately issue an alarm and take corresponding protective measures, such as reducing the output power of the medium frequency power supply or shutting down the heating furnace to prevent equipment damage and safety accidents. Real-time temperature monitoring and automatic adjustment functions enable the heating furnace to operate more stably. By reducing the occurrence of faults such as overheating and overload, the reliability and stability of the equipment are improved, and the maintenance cost and downtime are reduced. The digital control system can record and analyze the temperature data of the induction coil, providing important reference information for the maintenance and management of the equipment. Through data analysis, potential problems in the heating process can be discovered, and timely measures can be taken to improve them, thereby improving the overall performance and efficiency of the equipment.

[0020] The invention discloses a method for using an angle-adjustable medium-frequency induction heating furnace. By moving a furnace body support into a slag well and rotating the furnace body to adjust its angle, the inlet of the furnace body can be vertically aligned with the direction in which the slag liquid flows down. This method enables the heating furnace to flexibly adapt to a variety of different working conditions. Regardless of the size of the slag liquid flow rate, the speed of the flow, or the depth and shape of the slag well, the heating furnace can achieve the best heating effect by adjusting the angle. The adjustment of the furnace body angle ensures that the slag liquid can flow smoothly into the interior of the heating furnace, reduces the accumulation and eddy current of the fluid at the inlet, and thus improves the heating efficiency. At the same time, by accurately controlling the heating process, it can be ensured that the slag liquid reaches an ideal temperature state during the heating process, further improving the heating efficiency and quality. The method simplifies the operation process of the heating furnace, so that the operator can more easily complete the adjustment and fixing of the furnace body angle. The design of the furnace body support and the furnace body makes the angle adjustment process more intuitive and easy to operate, reducing the difficulty of operation and labor costs. By fixing the furnace body support and locking the furnace body, the stability and safety of the heating furnace during operation are ensured. This design avoids safety hazards caused by furnace shaking or tilting, ensuring the safety of operators and the stability of the production environment. This method of use enables the heating furnace to adapt to more types of slag and liquid heating treatment needs, improving the versatility and utilization of the equipment. Whether it is processing high-temperature molten metal or other types of slag and liquid, the heating furnace can achieve the best heating effect by adjusting the angle, thereby improving the overall performance and economic benefits of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a front cross-sectional view of an angle-adjustable medium-frequency induction heating furnace in the present invention; Figure 2 It is a side view of an angle-adjustable medium-frequency induction heating furnace in the present invention; Figure 3 It is a front view of an angle-adjustable medium-frequency induction heating furnace in the non-working state in the present invention; Figure 4 This is a front view of an angle-adjustable medium-frequency induction heating furnace in the present invention when it is in working state.

[0023] Among them: 1-furnace body; 2-furnace body bracket; 3-mullite + rare earth casting tube; 4-graphite tube; 5-mullite tube; 6-induction coil; 7-furnace shell; 8-traveling wheel; 9-temperature measuring point; 10-trumpet-shaped inlet structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings: Example 1 See also Figure 1 and Figure 2The embodiment of the present invention provides an angle-adjustable medium-frequency induction heating furnace, characterized in that it includes a furnace body 1 movably supported on a furnace body support 2, and the furnace body 1 is placed horizontally when not in operation; the inlet of the furnace body 1 is an upwardly inclined structure; the furnace body 1 includes a furnace lining structure, an induction coil 6 and a furnace shell 7 from the inside to the outside; the material of the furnace shell 7 is stainless steel, specifically S310 steel. The furnace lining structure includes a mullite + rare earth casting tube 3, a graphite tube 4 and a mullite tube 5 from the inside to the outside. The induction coil 6 is connected to a medium-frequency power supply module, and the medium-frequency power supply module is connected to a digital control system. The induction coil 6 includes one or more induction coils, which are made of high-magnetic permeability materials and are designed as a variable-size structure to meet the heating requirements of workpieces of different sizes and shapes; a temperature sensor is integrated inside the induction coil for real-time monitoring of the workpiece temperature during the heating process. The mullite + rare earth casting tube located at the outlet end of the furnace body 1 extends out of the furnace shell 7 to prevent the high-temperature fluid in the furnace body from flowing into the furnace lining structure. A trumpet-shaped inlet structure 10 is provided at the entrance of the furnace body 1; the center line of the trumpet-shaped inlet structure 10 forms an angle of 45° with the center line of the furnace shell 7. The trumpet-shaped inlet structure 10 is made of heat-insulating materials, such as mullite, graphite, etc. The trumpet-shaped inlet structure provided at the entrance of the furnace body forms an angle of 45° with the center line of the furnace shell, and this design optimizes the fluid introduction path. It enables the fluid to enter the interior of the furnace body more smoothly and evenly, reduces the impact and eddy current of the fluid at the entrance, thereby improving the heating efficiency and the uniformity of fluid treatment. The trumpet-shaped inlet structure is made of heat-insulating materials, and this design effectively reduces the heat loss from the entrance of the furnace body. The heat-insulating material has good heat-insulating properties and can prevent the high-temperature heat inside the furnace body from being transferred to the outside, thereby improving the thermal efficiency and energy utilization of the heating furnace. The design of the trumpet-shaped inlet structure not only optimizes the fluid introduction, but also enhances the structural stability at the entrance of the furnace body. Its unique shape and the use of insulating materials enable the inlet structure to withstand higher temperatures and pressures, reduce deformation and damage caused by temperature changes, and extend the service life of the furnace body. The trumpet-shaped inlet structure also improves the operational safety of the heating furnace by optimizing the fluid introduction path and reducing heat loss. It reduces the accumulation and splashing of fluid at the inlet, reduces the risk of fire and scalding caused by fluid overflow or splashing, and makes the heating furnace safer and more reliable during operation. The lower part of the furnace body bracket 2 is provided with walking wheels 8. The digital control system can also be connected to a remote monitoring and fault diagnosis system, which allows remote access and control of the heating furnace's operating interface through a network connection, and displays the heating status, temperature curve and historical data in real time; at the same time, the system has a built-in fault diagnosis module that can automatically identify and report potential fault points and provide maintenance suggestions.

[0031] See also Figure 3, the outer wall surface of the furnace shell 7 is provided with a temperature measuring point 9 at a position near the outlet and the inlet, and a temperature measuring thermocouple is provided at the temperature measuring point; the temperature measuring thermocouple is connected to a digital control system, and the temperature measuring thermocouple is R-grade or S-grade, and the R-grade and S-grade thermocouples are suitable for a higher operating temperature range, which can reach 0°C-1600°C. These high-temperature grade thermocouples are commonly used for high-temperature measurements in the fields of boilers, petrochemicals, aviation, aerospace, etc. The temperature of the liquid slag is about 1360°, and the R-grade or S-grade temperature measuring thermocouple meets its temperature measurement requirements. When the temperature of any temperature measuring point at the inlet and outlet is less than 1360°, a signal is transmitted to the digital control system to increase the power of the medium frequency power supply module, and the medium frequency induction heating furnace heats the inflowing liquid slag to about 1360°. The R-grade or S-grade temperature measuring thermocouple has high precision and stability, can accurately reflect the changes in the temperature in the furnace, and provide reliable data support for the digital control system. The digital control system receives and analyzes the temperature data provided by the R-class or S-class temperature measuring thermocouple, which can achieve precise control of the heating process. The system can automatically adjust the output power and frequency of the medium frequency power supply according to the preset temperature curve and heating parameters, thereby optimizing the heating process and ensuring the stability and uniformity of the temperature in the furnace. Accurate temperature monitoring and optimized heating process help improve product quality. During the heating process, the precise control of the furnace temperature can ensure that the metal or slag liquid reaches the ideal temperature state during the heating process, thereby improving its physical and chemical properties and improving the quality and consistency of the product. By monitoring the furnace temperature in real time, the digital control system can promptly detect and warn of potential faults. For example, when the temperature in the furnace rises or falls abnormally, the system can issue an alarm to remind the operator to take corresponding measures to prevent the occurrence of faults and ensure the safe operation of the heating furnace. Accurate temperature monitoring and optimized heating process help reduce energy consumption and costs. By accurately controlling the heating process, unnecessary energy waste can be reduced and energy utilization can be improved. At the same time, the optimized heating process can also reduce the oxidation and burning of metal or slag liquid, reduce raw material consumption and production costs.

[0032] Example 2 See also Figure 1 and Figure 2The embodiment of the present invention provides an angle-adjustable medium-frequency induction heating furnace, characterized in that it includes a furnace body 1 movably supported on a furnace body support 2, and the furnace body 1 is placed horizontally when not in operation; the inlet of the furnace body 1 is an upwardly inclined structure; the furnace body 1 includes a furnace lining structure, an induction coil 6 and a furnace shell 7 from the inside to the outside; the material of the furnace shell 7 is stainless steel, specifically S310 steel. The furnace lining structure includes a mullite + rare earth casting tube 3, a graphite tube 4 and a mullite tube 5 from the inside to the outside. The induction coil 6 is connected to a medium-frequency power supply module, and the medium-frequency power supply module is connected to a digital control system. The induction coil 6 includes one or more induction coils, which are made of high-magnetic permeability materials and are designed as a variable-size structure to meet the heating requirements of workpieces of different sizes and shapes; a temperature sensor is integrated inside the induction coil for real-time monitoring of the workpiece temperature during the heating process. The mullite + rare earth casting tube located at the outlet end of the furnace body 1 extends out of the furnace shell 7 to prevent the high-temperature fluid in the furnace body from flowing into the furnace lining structure. A trumpet-shaped inlet structure 10 is provided at the entrance of the furnace body 1; the center line of the trumpet-shaped inlet structure 10 forms an angle of 45° with the center line of the furnace shell 7. The trumpet-shaped inlet structure 10 is made of heat-insulating materials, such as mullite, graphite, etc. The trumpet-shaped inlet structure provided at the entrance of the furnace body forms an angle of 45° with the center line of the furnace shell, and this design optimizes the fluid introduction path. It enables the fluid to enter the interior of the furnace body more smoothly and evenly, reduces the impact and eddy current of the fluid at the entrance, thereby improving the heating efficiency and the uniformity of fluid treatment. The trumpet-shaped inlet structure is made of heat-insulating materials, and this design effectively reduces the heat loss from the entrance of the furnace body. The heat-insulating material has good heat-insulating properties and can prevent the high-temperature heat inside the furnace body from being transferred to the outside, thereby improving the thermal efficiency and energy utilization of the heating furnace. The design of the trumpet-shaped inlet structure not only optimizes the fluid introduction, but also enhances the structural stability at the entrance of the furnace body. Its unique shape and the use of insulating materials enable the inlet structure to withstand higher temperatures and pressures, reduce deformation and damage caused by temperature changes, and extend the service life of the furnace body. The trumpet-shaped inlet structure also improves the operational safety of the heating furnace by optimizing the fluid introduction path and reducing heat loss. It reduces the accumulation and splashing of fluid at the inlet, reduces the risk of fire and scalding caused by fluid overflow or splashing, and makes the heating furnace safer and more reliable during operation. The lower part of the furnace body bracket 2 is provided with walking wheels 8. The digital control system can also be connected to a remote monitoring and fault diagnosis system, which allows remote access and control of the heating furnace's operating interface through a network connection, and displays the heating status, temperature curve and historical data in real time; at the same time, the system has a built-in fault diagnosis module that can automatically identify and report potential fault points and provide maintenance suggestions.

[0033] The induction coil 6 is integrated with a temperature sensor, which is connected to a digital control system. The temperature sensor is integrated inside the induction coil to monitor the working temperature of the induction coil in real time. This design enables the digital control system to obtain the most direct temperature information of the induction coil, so as to more accurately understand the temperature state inside the heating furnace. Through the real-time monitoring and analysis of the temperature of the induction coil by the digital control system, the output power of the medium frequency power supply can be automatically adjusted to ensure that the induction coil operates within the optimal temperature range. This helps to reduce energy waste, improve heating efficiency, and extend the service life of the induction coil. The temperature sensor integrated inside the induction coil can also effectively prevent the occurrence of overheating faults. When the temperature of the induction coil exceeds the preset safety threshold, the digital control system can immediately issue an alarm and take corresponding protective measures, such as reducing the output power of the medium frequency power supply or shutting down the heating furnace to prevent equipment damage and safety accidents. Real-time temperature monitoring and automatic adjustment functions enable the heating furnace to operate more stably. By reducing the occurrence of faults such as overheating and overload, the reliability and stability of the equipment are improved, and the maintenance cost and downtime are reduced. The digital control system can record and analyze the temperature data of the induction coil, providing important reference information for the maintenance and management of the equipment. Through data analysis, potential problems in the heating process can be discovered and timely measures can be taken to make improvements, thereby improving the overall performance and efficiency of the equipment.

[0034] The present invention also discloses a method for using the angle-adjustable medium-frequency induction heating furnace, comprising: During operation, the furnace body support 2 is moved into the slag pit, and then the furnace body 1 is rotated to adjust the angle of the furnace body 1 on the furnace body support 2 so that the inlet of the furnace body 1 is vertically aligned with the direction of the slag liquid flowing down, and the position of the furnace body support 2 is fixed and locked to lock the furnace body 1.

[0035] The invention discloses a method for using an angle-adjustable medium-frequency induction heating furnace. By moving a furnace body support into a slag well and rotating the furnace body to adjust its angle, the inlet of the furnace body can be vertically aligned with the direction in which the slag liquid flows down. This method enables the heating furnace to flexibly adapt to a variety of different working conditions. Regardless of the size of the slag liquid flow rate, the speed of the flow, or the depth and shape of the slag well, the heating furnace can achieve the best heating effect by adjusting the angle. The adjustment of the furnace body angle ensures that the slag liquid can flow smoothly into the interior of the heating furnace, reduces the accumulation and eddy current of the fluid at the inlet, and thus improves the heating efficiency. At the same time, by accurately controlling the heating process, it can be ensured that the slag liquid reaches an ideal temperature state during the heating process, further improving the heating efficiency and quality. The method simplifies the operation process of the heating furnace, so that the operator can more easily complete the adjustment and fixing of the furnace body angle. The design of the furnace body support and the furnace body makes the angle adjustment process more intuitive and easy to operate, reducing the difficulty of operation and labor costs. By fixing the furnace body support and locking the furnace body, the stability and safety of the heating furnace during operation are ensured. This design avoids safety hazards caused by furnace shaking or tilting, ensuring the safety of operators and the stability of the production environment. This method of use enables the heating furnace to adapt to more types of slag and liquid heating treatment needs, improving the versatility and utilization of the equipment. Whether it is processing high-temperature molten metal or other types of slag and liquid, the heating furnace can achieve the best heating effect by adjusting the angle, thereby improving the overall performance and economic benefits of the equipment.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An angle-adjustable medium-frequency induction heating furnace, characterized in that: The invention comprises a furnace body (1) movably supported on a furnace body support (2), wherein the furnace body (1) is placed horizontally when not in operation; the entrance of the furnace body (1) is an upwardly inclined structure; the furnace body (1) comprises, from the inside to the outside, a furnace lining structure, an induction coil (6) and a furnace shell (7); the induction coil (6) is connected to a medium frequency power supply module, and the medium frequency power supply module is connected to a digital control system.

2. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: The furnace shell (7) is made of stainless steel.

3. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: The furnace lining structure comprises, from the inside to the outside, a mullite+rare earth casting tube (3), a graphite tube (4) and a mullite tube (5).

4. The angle-adjustable medium-frequency induction heating furnace according to claim 3, characterized in that: The mullite + rare earth casting tube located at the outlet end of the furnace body (1) extends out of the furnace shell (7) to prevent the high-temperature fluid in the furnace body from flowing into the furnace lining structure.

5. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: A trumpet-shaped inlet structure (10) is provided at the inlet of the furnace body (1); a center line of the trumpet-shaped inlet structure (10) forms an angle of 45° with a center line of the furnace shell (7).

6. The angle-adjustable medium-frequency induction heating furnace according to claim 5, characterized in that: The trumpet-shaped inlet structure (10) is made by casting with a heat-insulating material.

7. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: Temperature measuring points (9) are provided on the outer wall surface of the furnace shell (7) at positions close to the outlet end and the inlet end, and temperature measuring thermocouples are provided at the temperature measuring points; the temperature measuring thermocouples are connected to a digital control system; the temperature measuring thermocouples are of R grade or S grade.

8. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: A temperature sensor is integrated inside the induction coil (6), and the temperature sensor is connected to a digital control system.

9. The angle-adjustable medium-frequency induction heating furnace according to claim 1, characterized in that: The lower part of the furnace body support (2) is provided with walking wheels (8).

10. A method for using the angle-adjustable medium-frequency induction heating furnace according to any one of claims 1 to 9, characterized in that: include: During operation, the furnace body support (2) is moved into the slag pit, and then the furnace body (1) is rotated to adjust the angle of the furnace body (1) on the furnace body support (2) so that the inlet of the furnace body (1) is vertically aligned with the direction in which the slag liquid flows downward, and the position of the furnace body support (2) is fixed and locked to lock the furnace body (1).

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