Auxiliary heating device and medium-frequency induction furnace
By using an auxiliary heating device consisting of a stirring plate and heating rods in a medium-frequency induction furnace, the problems of uneven heating and safety hazards have been solved, achieving efficient and uniform material heating and improving production efficiency and material quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-27
AI Technical Summary
Existing medium-frequency induction furnaces have problems such as the inability of materials to generate eddies during the heating process, slow heating rate, uneven heating, the need for manual stirring, and safety hazards, which affect material quality and heating efficiency.
An auxiliary heating device, including a stirring plate and multiple heating rods, combined with a detachable temperature measuring component, is used to achieve uniform heating of materials through rotational stirring, ensuring heating efficiency and safety.
It achieves efficient and uniform heating of materials, improves production efficiency and material quality, reduces safety hazards, and is easy to operate.
Smart Images
Figure CN224051019U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to smelting technical field especially, relates to a kind of auxiliary heating device and intermediate frequency induction furnace. BACKGROUND
[0002] With the continuous development of industrial production, especially in smelting, casting and other industries, intermediate frequency induction furnace is usually used to heat materials, and the intermediate frequency induction furnace forms an electromagnetic field through the inductor coil in the furnace, so that the material generates eddy current, thereby converting electrical energy into heat energy, and then achieving the required performance.
[0003] In the related art, the operator puts the required material into the furnace for heating, and controls the heat temperature and time to ensure the quality of the material and the stability of the subsequent process operation.
[0004] However, the existing intermediate frequency induction furnace heating has the following problems: some materials cannot generate eddy current in the existing intermediate frequency induction furnace due to their own physical properties, or although they can be heated, the heating speed is slow, or the material is not uniformly heated, the temperature difference between the surface and the interior of the material causes the material properties to change, or manual stirring is required during the heating process, which has safety hazards. The above problems affect the application range of the intermediate frequency furnace heating of the material, and reduce the overall quality of the material and the subsequent use effect and heating efficiency. SUMMARY
[0005] The utility model discloses in order to solve above -mentioned problem, provides a kind of auxiliary heating device and intermediate frequency induction furnace, the technical solutions as follows are used:
[0006] According to the first aspect of the application, an auxiliary heating device is provided for an intermediate frequency induction furnace, comprising:
[0007] A stirring disc in a cylindrical structure;
[0008] A heating assembly is arranged at the bottom of the stirring disc, and the heating assembly is composed of a plurality of heating rods, and the plurality of heating rods are arranged along the circumference of the stirring disc.
[0009] A temperature measuring assembly is installed on one side of the stirring disc having a plurality of heating rods, and the temperature measuring assembly is detachably connected with the stirring disc.
[0010] In some embodiments, the heating rod has a first end in a cylindrical structure and a second end in a conical structure, the first end is fixedly connected with the stirring disc, and the second end is used for inserting into the interior of the intermediate frequency induction furnace.
[0011] In some embodiments, the first end has a preset included angle between the axial direction and the radial direction of the stirring disc, and the preset included angle is 80° to 90°.
[0012] In some embodiments, the stirring disc is provided with a viewing hole in the form of a fan ring structure, and the viewing hole is arranged along the circumferential direction of the stirring disc.
[0013] One side of the viewing hole is provided with a temperature measuring hole in the form of a circle, and the temperature measuring hole is coaxially arranged with the stirring disc.
[0014] In some embodiments, the temperature measuring assembly is a thermocouple device, and the thermocouple device has a working end and a cold end.
[0015] In the assembled state, the working end penetrates through the temperature measuring hole and is located inside the medium-frequency induction furnace, and the cold end is located on the top of the stirring disc.
[0016] In some embodiments, a plurality of hanging rings are arranged on the side of the stirring disc away from the heating assembly, the plurality of hanging rings are arranged at intervals along the circumferential direction of the stirring disc, and the hanging rings are fixedly connected with the stirring disc.
[0017] According to the second aspect of the present application, a medium-frequency induction furnace is provided, which comprises a furnace body and a crucible located in the furnace body, the interior of the crucible is placed with a material, and the auxiliary heating device as described in the first aspect;
[0018] Among them, along the height direction of the furnace body, the auxiliary heating device is vertically inserted into the material.
[0019] In some embodiments, an induction coil is arranged between the furnace body and the crucible.
[0020] Compared with the prior art, the technical progress achieved by the present application is that:
[0021] The auxiliary heating device of the present application comprises a heating assembly composed of a stirring disc and a plurality of heating rods, and a detachable temperature measuring assembly, which provides efficient and accurate auxiliary heating function for the medium-frequency induction furnace. In the heating process, a plurality of heating rods are dispersedly inserted into the material, which can realize efficient heating of the material. At the same time, the auxiliary heating device is rotated to ensure that the material in each region is uniformly heated, thereby improving the production efficiency and the quality of the material. The whole device has the advantages of efficient heating, simple operation and safety. BRIEF DESCRIPTION OF DRAWINGS
[0022] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application.
[0023] In the drawings:
[0024] Figure 1 It is a schematic view of the medium-frequency induction furnace in the present application;
[0025] Figure 2For Figure 1 Cross-sectional view of A-A in the middle;
[0026] Figure 3 Structure diagram of the medium frequency induction furnace in the utility model;
[0027] Figure 4 Structure diagram of the auxiliary heating device in the utility model;
[0028] Figure 5 Structure diagram of the auxiliary heating device in the utility model.
[0029] In the figure: 1, stirring disc; 11, observation hole; 12, temperature measurement hole; 13, hanging ring; 2, heating rod; 21, first end; 22, second end; 3, temperature measurement assembly; 31, working end; 32, cold end; 100, auxiliary heating device; 200, furnace body; 300, crucible; 400, material; 500, induction coil. DETAILED DESCRIPTION
[0030] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the utility model will be described below with reference to the drawings.
[0031] As Figures 1 to 5 shown, the utility model discloses an auxiliary heating device, is applied to medium frequency induction furnace, and auxiliary heating device 100 includes stirring disc 1, heating assembly and temperature measurement assembly 3, and stirring disc 1 can effectively reduce the heat loss in medium frequency induction electric furnace in the heating process, and stirring disc 1 can be cylindrical structure, also can be cubic structure, as long as matching medium frequency induction electric furnace can, in an example, the overall stirring disc 1 is cylindrical structure, and the edge of cylindrical structure stirring disc 1 is circular arc and has safety, and can stably place in medium frequency induction electric furnace, and simultaneously in subsequent stirring process, has relative stability and makes rotation more balanced, thereby improves work efficiency and service life, and the bottom of stirring disc 1 is provided with heating assembly, and heating assembly provides heat and heats the material 400 in medium frequency induction electric furnace, and heating assembly is composed of multiple heating rods 2, and multiple heating rods 2 are along the circumference direction of stirring disc 1 (such as Figure 3The plurality of heating rods 2 are arranged at intervals in the I direction shown in the figure, and in use, the plurality of heating rods 2 are inserted into the material 400, thereby ensuring that the material 400 is heated uniformly inside and outside, avoiding local overheating or overcooling. The number of heating rods 2 can be six or eight, which can be adapted according to requirements, and the application does not make too many limitations on this. In addition, the heating rod 2 is made of a material that is resistant to high temperature, oxidation and reaction with the material 400, such as heat-resistant alloy steel. The heat-resistant alloy steel has good thermal conductivity and high-temperature resistance to adapt to the high-temperature environment in the medium-frequency induction furnace. The operator places the auxiliary heating device 100 into the medium-frequency induction furnace, and the heating rod 2 generates heat through the medium-frequency induction furnace. Since the plurality of heating rods 2 are arranged dispersedly and inserted into the material 400, they can uniformly heat each area of the material 400, avoiding uneven temperature or local overheating, thereby affecting the quality of the material 400.
[0032] With reference to the foregoing description Figures 1 to 5 , the auxiliary heating device also has a temperature measuring assembly 3 for real-time monitoring of the temperature inside the material 400, ensuring that the temperature during heating does not exceed the preset range. The temperature measuring assembly 3 is installed on the side of the stirring disc 1 having the plurality of heating rods 2. The temperature measuring assembly 3 can be a thermocouple or an infrared temperature probe, etc. The temperature measuring assembly 3 is detachably connected with the stirring disc 1, facilitating maintenance, inspection or replacement by the operator, thereby improving the maintainability of the entire device and the production efficiency.
[0033] In the application, the auxiliary heating device with the heating assembly composed of the stirring disc and the plurality of heating rods and the detachable temperature measuring assembly provides efficient and accurate auxiliary heating function for the medium-frequency induction furnace. In the heating process, the plurality of heating rods are inserted dispersedly into the material, thereby achieving efficient heating of the material. At the same time, the auxiliary heating device is rotated to ensure that each area of the material is uniformly heated, thereby improving the production efficiency and the quality of the material. The entire device has efficient heating, simple operation and safety.
[0034] In some embodiments, as shown in Figure 4 , the heating rod 2 has a first end 21 in the form of a cylinder and a second end 22 in the form of a cone. The first end 21 is fixedly connected with the stirring disc 1, which can be welded to ensure that the heating rod 2 is stably installed on the stirring disc 1, avoiding loosening or falling off due to uneven stress or vibration. The second end 22 in the form of a cone can reduce resistance and facilitate insertion into the interior of the medium-frequency induction furnace. In an example, the first end 21 is in the form of a cylinder, and the second end 22 is in the form of a cone, so that the heating rod 2 has a larger contact area. The operator inserts the heating rod 2 into the medium-frequency induction furnace and directly contacts the material 400 in the furnace, so that the heat of the heating rod 2 is uniformly distributed in each area of the material 400, thereby improving the heating efficiency and uniformity.
[0035] In some embodiments, as shown in Figures 3 to 5As shown, the axial direction of the first end 21 (as shown) Figure 3 (as shown in the z-direction) and the radial direction of the stirring plate 1 (as shown in the z-direction) Figure 3 There is a preset angle between the x-direction shown, which is 80° to 90°. In one example, as... Figure 3 As shown, the preset included angle is 90°, that is, the heating rod 2 and the stirring plate 1 are perpendicular to each other. This ensures the position of the heating rod 2, making it easy for the operator to place the auxiliary heating device 100 into the medium-frequency induction furnace. It also provides stirring and heat distribution, thereby achieving uniform heating and stability. In another example, such as... Figure 5 As shown, the preset included angle is 85°, and the heating rod 2 is inclinedly set at the bottom of the stirring plate 1, along the radial direction of the stirring plate 1 (e.g., Figure 5 The second ends 22 of the heating rods 2 on both sides (as shown in the y-direction) are oriented towards the axial direction of the stirring plate 1 (e.g., Figure 5 The cross-tilt (as shown in the z-direction) makes the use of heating rod 2 in the furnace flexible and efficient.
[0036] In some embodiments, such as Figure 3 and Figure 4 As shown, the stirring plate 1 has an observation hole 11 with a fan-shaped ring structure, and the observation hole 11 is along the circumference of the stirring plate 1 (e.g., Figure 4 As shown in the diagram (direction I), the fan-shaped observation hole 11 provides operators with a wider field of vision, facilitating observation of the heating and stirring of the material 400 inside the furnace. This allows for timely adjustment of heating parameters or stirring speed, preventing adverse effects caused by uneven heating or overheating of the material 400. A circular temperature measuring hole 12 is located on one side of the observation hole 11, coaxially aligned with the stirring plate 1. This allows operators to obtain real-time temperature information of the material 400 inside the furnace, providing precise temperature control data for the heating process and ensuring safety and controllability.
[0037] In some embodiments, the temperature measuring component 3 is a thermocouple device with a working end 31 and a cold end 32. In the assembled state, the working end 31 passes through the temperature measuring hole 12 and is placed inside the medium-frequency induction furnace in contact with the material 400, directly sensing temperature changes and converting the temperature information into an electrical signal through the thermoelectric effect. The cold end 32 is located on top of the stirring plate 1. It should be noted that the size of the cold end 32 is larger than the size of the temperature measuring hole 12, so that the thermocouple device is not easy to fall into the medium-frequency induction furnace and to ensure that the working end 31 always stays in the correct position during the heating process. The temperature signal of the cold end 32 is transmitted to the control system for real-time monitoring and adjustment of the furnace temperature to ensure the stability and accuracy of the heating process.
[0038] In some embodiments, such as Figures 1 to 5As shown, multiple hanging rings 13 are provided on the side of the stirring plate 1 away from the heating rod 2. The number of hanging rings can be three, four, six, etc., and can be adapted to meet specific needs. In one example, such as... Figure 4 As shown, three hanging rings 13 are provided, and the three hanging rings 13 are arranged along the circumference of the stirring plate 1 (e.g., Figure 4 As shown in the I direction, the hanging rings 13 are arranged at intervals and have a U-shaped structure. They are fixedly connected to the stirring plate 1. The hanging rings 13 provide a stable hanging point for the stirring plate 1, so that the hanging equipment can suspend the entire auxiliary heating device 100 through the hanging rings 13 and rotate it. This ensures that the auxiliary heating device 100 is accurately placed into the medium frequency induction furnace. The material 400 is heated evenly in all areas by rotating and stirring, so as to achieve rapid installation and operation. At the same time, it provides convenience for operators and ensures safety and stability.
[0039] like Figures 1 to 3 As shown, this application provides a medium-frequency induction furnace for calcining, decomposing, and drying non-metallic materials. The furnace includes a furnace body 200 and a crucible 300 located within the furnace body 200. The crucible 300 holds the material 400 to be heated. The crucible 300 is made of a high-temperature resistant (greater than 1100 degrees Celsius) and corrosion-resistant metal material, such as a molybdenum crucible or a tungsten crucible, and can be adapted as needed. Further details are omitted here. The furnace also includes an auxiliary heating device 100 as described above. The furnace body 200 is made of refractory material to ensure heating time and service life. Along the height of the furnace body 200 (e.g., along the height direction of the furnace body 200...), the furnace body 200 is constructed of refractory material. Figure 3 (as shown in the z direction), the auxiliary heating device 100 is vertically inserted into the material 400 and works in conjunction with the heating source in the medium frequency induction furnace to provide additional heat to the material 400, thereby achieving uniform heating of the material 400.
[0040] In some embodiments, an induction coil 400 is provided between the furnace body 200 and the crucible 300. The medium-frequency induction furnace converts three-phase power frequency AC into medium-frequency current. The induction coil 400 generates an alternating magnetic field, causing eddy currents to form inside the metal material. When the eddy currents flow inside the metal, the electrical energy is converted into heat energy due to the metal's resistance characteristics. The auxiliary heating device 100 is placed within the magnetic field of the medium-frequency induction furnace. The alternating magnetic field cuts through the auxiliary heating device 100, causing it to heat up, thereby indirectly heating the heated material 400. It should be noted that the material 400 can be a solid substance with poor electrical conductivity, such as mineral powder or granular material (grain, chemical products, etc.).
[0041] The working principle of the auxiliary heating device and medium-frequency induction furnace in this application is as follows:
[0042] like Figures 1 to 5Firstly, the operator places the required material 400 into the crucible 300 in the intermediate frequency induction furnace, fills it up, then uses the hoisting equipment to hang and place the auxiliary heating device 100 into the intermediate frequency induction furnace through the hanging ring 13, ensures that the plurality of heating rods 2 are evenly inserted into the material 400, adjusts the insertion depth of the heating rods 2, so as to realize sufficient contact with the material 400 and provide effective heating, inserts the temperature measuring assembly 3 into the material 400 through the temperature measuring hole 12 to detect the temperature in the material 400 in real time, the operator adjusts the temperature in the intermediate frequency induction furnace to the required temperature, for example, the working temperature is 1100 DEG C, so that the induction coil 400 is powered on and generates an alternating magnetic field, starts to heat the material 400 in the crucible 300, at the same time, the heating rods 2 of the auxiliary heating device 100 start to heat under the assistance of the induction furnace, after a period of time, the operator rotates the auxiliary heating device 100 again through the hoisting equipment to stir the material 400 to realize uniform heating, in this process, the operator observes the state change of the material 400 through the observation hole 11 and adjusts in time to ensure the heating uniformity and quality of the material 400.
[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the claims of the present application.
Claims
1. An auxiliary heating device, characterized in that, The auxiliary heating device is applied to a medium-frequency induction electric furnace, and comprises: a stirring disc in a cylindrical structure; a heating assembly arranged at the bottom of the stirring disc, the heating assembly being composed of a plurality of heating rods, the plurality of heating rods being arranged at intervals along the circumference of the stirring disc; a temperature measuring assembly mounted on the side of the stirring disc with the plurality of heating rods, the temperature measuring assembly being detachably connected with the stirring disc.
2. The supplemental heating device of claim 1, wherein, The heating rod has a first end in a cylindrical structure and a second end in a conical structure, the first end being fixedly connected with the stirring disc, and the second end being used for inserting into the interior of the medium-frequency induction electric furnace.
3. The supplemental heating device of claim 2, wherein, The axial direction of the first end and the radial direction of the stirring disc have a preset included angle, and the preset included angle is 80° to 90°.
4. The supplemental heating device of claim 1, wherein, The stirring disc has an observation hole in a fan ring structure, the observation hole being arranged along the circumference of the stirring disc; one side of the observation hole is provided with a temperature measuring hole in a circular structure, the temperature measuring hole being coaxially arranged with the stirring disc.
5. The supplemental heating device of claim 4, wherein, The temperature measuring assembly is a thermocouple device, the thermocouple device having a working end and a cold end; in the assembled state, the working end passes through the temperature measuring hole and is placed in the interior of the medium-frequency induction electric furnace, and the cold end is located at the top of the stirring disc.
6. The supplemental heating device of claim 1, wherein, The stirring disc is provided with a plurality of hanging rings on the side away from the heating assembly, the plurality of hanging rings being arranged at intervals along the circumference of the stirring disc, and the hanging rings being fixedly connected with the stirring disc.
7. An intermediate frequency induction furnace characterized by comprising: The auxiliary heating device comprises a furnace body and a crucible located in the furnace body, the interior of the crucible is placed with materials, and the auxiliary heating device is as claimed in any one of claims 1-6. The auxiliary heating device is vertically inserted into the materials along the height direction of the furnace body.
8. The intermediate frequency induction furnace according to claim 7, characterized by The furnace body and the crucible are provided with an induction coil.