Electromagnetic induction device for continuously synthesizing metal catalytic material

Abstract

The invention discloses an electromagnetic induction device for continuously synthesizing a metal catalytic material. The electromagnetic induction device comprises an induction furnace cavity fixedly connected with an induction furnace cover, a temperature sensor and a track suite are fixedly connected to the lower heat preservation die holder, and a lower magnetic core fixing seat is fixedly connected to the lower part of the lower heat preservation die holder; an upper magnetic core fixing seat is fixedly connected to the upper heat preservation die holder, and an upper magnetic core and a lower magnetic core which are inserted into the two ends of the induction coil are correspondingly and fixedly connected to the upper magnetic core fixing seat and the lower magnetic core fixing seat; the induction coil is formed by coiling a hollow induction tube; a stepping motor is fixedly arranged in the cavity of the induction furnace and is fixedly connected with a material tray; a control system and a heat dissipation circulator are arranged outside the induction furnace cavity, the induction coil is connected with a hot water inlet and a cold water outlet of the heat dissipation circulator, and the cold water inlet and the hot water outlet of the heat dissipation circulator are externally connected with a water tank; the induction coil, the temperature sensor and the stepping motor are connected with a control system, and the control system is connected with a mains supply and a PC. The problems of oxidation and heat dissipation of the induction coil are solved, and different materials can be efficiently, stably and continuously heated.

Description

Technical Field

[0001] The present invention belongs to the technical field of electromagnetic induction heating, and specifically relates to an electromagnetic induction device for continuously synthesizing metal catalytic materials. Background Art

[0002] Electromagnetic induction heating technology is an efficient heating method that converts electrical energy into heat energy using the principle of electromagnetic induction. Its core is to generate eddy currents inside a conductive material through an alternating magnetic field, causing the material to heat itself and quickly reach the high temperature state required for synthesis, thereby achieving a fast and uniform heating effect. It has been widely used in fields such as metal smelting, heat treatment, welding, and material synthesis.

[0003] During the thermal synthesis of materials, induction heating technology can precisely control the heating rate and temperature distribution. Combined with high-purity raw materials and a protective atmosphere (such as argon, nitrogen, or hydrogen) or a reaction atmosphere, it can achieve chemical reactions, solid-phase diffusion, or melting of the raw materials to synthesize high-performance materials. It has the advantages of fast heating speed, high energy utilization rate, and low environmental pollution, and is particularly suitable for synthesizing magnetic materials. For example, when preparing CuCo bimetallic or CoNi bimetallic catalytic materials, induction heating technology can precisely control the heating rate and temperature distribution to ensure that the raw materials melt at high temperatures, forming products with high purity and high density.

[0004] Currently, a variety of melting furnaces related to induction heating technology have been publicly disclosed at home and abroad. However, they all have some problems: 1) Chinese Patent Application CN 201020592296 discloses an electromagnetic induction melting furnace with the characteristics of high efficiency and easy maintenance. However, its coil is exposed, and it cannot solve the oxidation problem during the heating process; 2) Chinese Patent Application CN201320039078 discloses a waterless cooling induction heating melting furnace. There is a furnace lining between the induction coil and the crucible. Its coil operates at a relatively low temperature, resulting in low heating efficiency. Moreover, it lacks a cooling process and cannot dissipate heat quickly. Furthermore, the induction coil is exposed and is extremely easy to be oxidized during use, and it cannot process non-magnetic materials; 3) Chinese Patent Application CN201610144810 discloses a relatively complex induction melting furnace. Although it can heat non-magnetic substances, its structure is extremely complex, the installation difficulty is high, and the cost and maintenance are high; Chinese Patent Application CN 202411267885 discloses a barrel-shaped electromagnetic induction melting furnace with good magnetic circuit sealing and high heating efficiency. However, it adopts an open system and has a single function. It cannot avoid the oxidation of the heated materials and cannot provide a chemical reaction atmosphere. Summary of the Invention

[0005] The object of the present invention is to provide an electromagnetic induction device for continuously synthesizing a metal catalytic material, which adopts a simple structure, solves the problems of oxidation and heat dissipation of the induction coil during the heating process, and can provide different reaction atmospheres to achieve efficient, stable and continuous heating of different materials.

[0006] The present invention is realized by the following technical solutions:

[0007] An electromagnetic induction device for continuously synthesizing a metal catalytic material, comprising an induction furnace cavity, an induction furnace cover is connected to the top of the induction furnace cavity by bolts, a ventilation port is provided on the induction furnace cover, and a sealing plug is connected to the ventilation port;

[0008] A heating assembly is fixedly arranged inside the induction furnace cavity. The heating assembly includes an induction coil, an upper heat insulation mold base and a lower heat insulation mold base fixedly connected to the inner wall surface of the induction furnace cavity. The upper heat insulation mold set and the lower heat insulation mold base are both provided with grooves, temperature sensors are fixedly installed inside the grooves, and a track kit is fixedly installed on the upper surface of the lower heat insulation mold base;

[0009] The upper heat insulation mold base, the lower heat insulation mold base and the track kit are all provided with through holes for both ends of the induction coil to pass through. An upper magnetic core fixing seat is fixedly installed on the top of the upper heat insulation mold base, a lower magnetic core fixing seat is fixedly installed on the bottom of the lower heat insulation mold base, an upper magnetic core is fixedly installed under the upper magnetic core fixing seat, a lower magnetic core is fixedly installed on the upper surface of the lower magnetic core fixing seat, and the upper magnetic core and the lower magnetic core pass through the through holes and are respectively inserted into the interiors of both ends of the induction coil;

[0010] A stepping motor is fixedly installed inside the induction furnace cavity. The output shaft of the stepping motor is fixedly connected to a horizontal material tray through a connecting rod. The lower surface of the material tray fits with the track kit, and a gap is left between the upper surface of the material tray and the upper heat insulation mold base;

[0011] A control box is fixedly connected to the outer wall surface of the induction furnace cavity. A control system and a heat dissipation circulator are fixedly installed inside the control box. Both ends of the induction coil extend out of the induction furnace cavity and enter the control box, and are electrically connected to the control system;

[0012] The induction coil is wound by a hollow induction tube, and both ends thereof penetrate through the box body of the control system and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator. The cold water inlet of the heat dissipation circulator is externally connected to the water outlet of the water tank, and the hot water outlet of the heat dissipation circulator is externally connected to the water inlet of the water tank;

[0013] The temperature sensors and the stepping motor are both connected to the control system, and the control system is connected to the mains power supply and the PC.

[0014] Further, both the induction furnace cover and the induction furnace cavity are made of glass.

[0015] Further, it also includes a pressure dividing pad and a sealing ring;

[0016] Multiple connecting lugs are fixedly connected to the pressure dividing pad, the induction furnace cover, and the induction furnace cavity. Bolt holes are provided in the connecting lugs, and bolts pass through the bolt holes to connect the pressure dividing pad, the induction furnace cover, and the induction furnace cavity in sequence;

[0017] The sealing ring is fixedly installed under the induction furnace cover and fits with the upper edge of the induction furnace cavity.

[0018] Further, the pressure dividing pad, the upper heat preservation mold base, the lower heat preservation mold base, and the track kit are all made of materials with high modulus and low magnetic permeability.

[0019] Further, the material with high modulus and low magnetic permeability is one or several of alumina, magnesia, zirconia, tungsten, and molybdenum.

[0020] Further, it also includes a mold base fixing plate, which is fixedly connected to the backs of the upper heat preservation mold base and the lower heat preservation mold base, and the mold base fixing plate is fixedly connected to the inner wall surface of the induction furnace cavity.

[0021] Further, two ends of the induction coil are respectively fixedly sleeved with a first hollow induction tube connector and a second hollow induction tube connector, and both the first hollow induction tube connector and the second hollow induction tube connector are fixedly connected to the inner wall surface of the induction furnace cavity;

[0022] An outlet adapter and an inlet adapter are fixedly connected to the outer wall surface of the induction furnace cavity. Two ends of the induction coil penetrate the induction furnace cavity and are respectively fixedly connected to the outlet adapter and the inlet adapter. Both the outlet adapter and the inlet adapter are fixedly connected with hollow induction tube extension pipes. The two hollow induction tube extension pipes penetrate the box body of the control system and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator.

[0023] Further, a circuit board is provided inside the box body of the control system. The circuit board integrates a storage unit and a control unit that are connected to each other. The GPIO pins of the circuit board are connected to a display screen, a knob, a Run key, an Enter key, numeric keys, a Down key, an Up key, an indicator light, an alarm light, a control system circuit port, a power connection terminal, and a PC connection terminal arranged on the outer wall of the box through jumpers.

[0024] The temperature sensor and the stepper motor are connected to the control system circuit port through wires, and the control system circuit port is electrically connected to the hollow induction tube extension pipe;

[0025] The power connection terminal is externally connected to the mains electricity, and the PC connection terminal is connected to a PC.

[0026] Furthermore, a multi-core adapter is fixedly connected to the outer wall surface of the induction furnace cavity. The jumpers of the stepping motor and the temperature sensor are both connected to the multi-core adapter, and the multi-core adapter is connected to the control system circuit port.

[0027] Furthermore, both the upper magnetic core and the lower magnetic core are rectangular parallelepipeds made of silicon steel.

[0028] The present invention has the following beneficial technical effects:

[0029] First, both ends of the induction coil are respectively inserted into the through holes opened in the upper heat preservation mold base and the lower heat preservation mold base. The upper heat preservation mold base and the lower heat preservation mold base are both located inside the sealed induction furnace cavity. The sealed induction furnace cavity can prevent the outside air from contacting the induction coil, solving the oxidation problem during the heating process, and the structure is simple. Second, the induction coil and the upper magnetic core and the lower magnetic core inserted therein concentrate the inductance. Just by energizing the induction coil, the metal powder and alloy materials can be heated efficiently and continuously by means of the electromagnetic induction heating principle. Third, during the heating process, the real-time temperature of the material is collected by the temperature sensor and fed back to the control system, and real-time monitoring is carried out by using a PC or a display screen. When the temperature is too high or too low, the heating parameters and the movement control of the stepping motor are adjusted by the control system or the PC to heat the material within the set temperature range, and the metal catalytic material can be synthesized efficiently and stably. Fourth, the shape of the induction coil can be flexibly replaced according to the state and process requirements of the material to be heated, and it can adapt to the heating requirements of different materials. Fifth, according to different materials, the reaction atmosphere can be adjusted through the air exchange port, thereby changing the gas composition in the synthesis environment. For example: inert gas or reducing gas, which has good applicability. Sixth, with the help of an external water tank to provide coolant and using the hollow induction tube as a circulation pipeline, heat dissipation can be carried out efficiently to prevent the temperature from being too high. In short, the present invention adopts a simple structure, not only solves the oxidation problem and heat dissipation problem of the induction coil during the heating process, but also can provide different reaction atmospheres according to different materials to realize the efficient, stable and continuous heating function of different materials.

[0030] The upper heat preservation mold base, the lower heat preservation mold base and the track kit of the present invention are all made of materials with high modulus and low magnetic conductivity, and the induction furnace cavity and the induction furnace cover are made of glass, which significantly improves the heating efficiency and the safety of material synthesis. In addition, by installing a pressure dividing pad on the induction furnace cover, the problem of poor sealing caused by the deformation of the induction furnace cover due to high heat is overcome. At the same time, by setting a sealing ring, the sealing performance of the induction furnace cover to the induction furnace cavity is further increased.

[0031] The voltage dividing pad, upper heat preservation die holder, lower heat preservation die holder and track kit of the present invention are all made of materials with high modulus and low magnetic conductivity, which not only have good dimensional stability and high temperature resistance characteristics, but also can reduce eddy current loss and local overheating, improving the heating efficiency.

[0032] The present invention uses an outlet adapter and an inlet adapter to connect the hollow induction tube extension tube to both ends of the induction coil, and is connected through a multi-core adapter and the jumper wires of the stepper motor and temperature sensor. Compared with pulling out the induction coil and jumper wires through an opening in the induction furnace cavity, it can play a good sealing and fixing role, increasing the sealing performance of the induction furnace cover to the induction furnace cavity.

[0033] The present invention is provided with a display screen, an alarm lamp and a variety of buttons on the surface of the control system box, which is convenient to obtain real-time data and the operating state of the device during operation at the operation site, and adjust the heating parameters and the motion control of the stepper motor through the buttons, which is more convenient. Brief Description of the Drawings

[0034] Figure 1 Isometric view of the invention;

[0035] Figure 2 Structural schematic diagram of the magnetic core and the magnetic core fixing seat of the invention;

[0036] Figure 3 Structural schematic diagram of the die holder, track kit and induction coil of the present invention;

[0037] Figure 4 Isometric view of the heating component of the present invention;

[0038] Figure 5 Front isometric view of the heating component and the induction furnace cavity of the present invention;

[0039] Figure 6 Back isometric view of the heating component and the induction furnace cavity of the present invention;

[0040] Figure 7 Exploded structural schematic diagram of the voltage dividing pad, induction furnace cover, sealing ring and induction furnace cavity of the present invention;

[0041] Figure 8 Circuit schematic diagram of the present invention;

[0042] Figure 9 Isometric view of the control system of the present invention;

[0043] Figure 10 Swing angle-time graph of the controlled motion in the embodiment of the present invention;

[0044] Figure 11 Interface diagram of the control software of the present invention;

[0045] Figure 12 This is the swing angle - time graph of the preset function in the embodiment of the present invention;

[0046] Figure 13 This is the principle block diagram of the control system of the present invention.

[0047] In the figure: 1. Voltage dividing pad; 2. Sealing ring; 3. Induction furnace cavity; 4. Bolt; 5. Control box; 6. Ventilation port; 7. Induction furnace cover; 8. Upper magnetic core fixing seat; 9. Upper magnetic core; 10. First screw; 11. Lower magnetic core fixing seat; 12. Lower magnetic core; 13. Second screw; 14. Induction coil; 15. Upper heat preservation mold base; 16. First square through - hole; 17. Lower heat preservation mold base; 18. Second square hole; 19. First threaded hole; 20. Second threaded hole; 21. Temperature sensor; 22. Groove; 23. Track kit; 24. Threaded through - hole; 25. Counterbore; 26. Mold base fixing plate; 27. Stepper motor; 28. Material tray; 29. Outer wall surface; 30. Outlet adapter; 31. Inlet adapter; 32. Multi - core adapter; 33. Inner wall surface; 34. First hollow induction tube connector; 35. Second hollow induction tube connector; 36. Hollow induction tube extension; 37. Control system; 38. Heat dissipation circulator; 39. Cold water inlet; 40. Hot water outlet; 41. Display screen; 42. Knob; 43. Run key; 44. Enter key; 45. Number keys; 46. Down key; 47. Up key; 48. Indicator light; 49. Alarm light; 50. Control system circuit port; 51. Power connection terminal; 52. PC connection terminal. Detailed implementation manners

[0048] The following further elaborates on the present invention in detail in combination with specific embodiments, which is an explanation rather than a limitation of the present invention.

[0049] As Figure 1 and Figure 7 shown, an electromagnetic induction device for continuously synthesizing metal catalytic materials includes a voltage dividing pad 1, a sealing ring 2, an induction furnace cavity 3, and an induction furnace cover 7. The voltage dividing pad 1, the induction furnace cover 7, and the induction furnace cavity 3 are all fixedly connected with a plurality of connecting ears, and bolt holes are provided in the connecting ears. The bolt 4 passes through the bolt holes to connect the voltage dividing pad 1, the induction furnace cover 7, and the induction furnace cavity 3 in sequence; The sealing ring 2 is pasted under the induction furnace cover 7 and fits with the upper edge of the induction furnace cavity 3;

[0050] The upper surface of the induction furnace cover 7 is provided with a ventilation port 6, and the ventilation port 6 is connected with a sealing plug. The ventilation port 6 is used for vacuum pumping, introducing inert gases (such as argon, helium, or nitrogen) or reaction gases (nitrogen, carbon monoxide, or hydrogen);

[0051] As Figures 1 - 6As shown, a heating component is fixedly arranged inside the induction furnace cavity 3. The heating component includes an upper magnetic core fixing seat 8, a lower magnetic core fixing seat 11, an induction coil 14, an upper heat preservation mold seat 15 and a lower heat preservation mold seat 17, where: on the back surfaces of the upper heat preservation mold seat 15 and the lower heat preservation mold seat 17, a mold seat fixing plate 26 is fixedly installed by screws. The upper heat preservation mold seat 15 and the lower heat preservation mold seat 17 are fixedly connected through the mold seat fixing plate 26, and the mold seat fixing plate 26 is fixedly connected to the inner wall surface 33 of the induction furnace cavity 3 by screws;

[0052] As Figure 3 and Figure 4 shown, the upper heat preservation mold seat 15 and the lower heat preservation mold seat 17 are both provided with grooves 22. After the upper heat preservation mold seat 15 and the lower heat preservation mold seat 17 are fixedly connected, the grooves 22 formed on the surfaces of the upper heat preservation mold seat 15 and the lower heat preservation mold seat 17 form a cavity. A temperature sensor 21 is installed inside the cavity. A track kit 23 is fixedly installed on the upper surface of the lower heat preservation mold seat 17. The track kit 23 is provided with a threaded through hole 24, and the lower heat preservation mold seat 17 is provided with a counterbore 25. A countersunk head bolt sequentially passes through the counterbore 25 and the threaded through hole 24 to fixedly connect the track kit 23 and the lower heat preservation mold seat 17;

[0053] Preferably, both the induction furnace cavity 3 and the induction furnace cover 7 are made of glass. Glass has the advantages of low magnetic conductivity and transparency, which can not only improve the heating efficiency but also facilitate observing the internal condition of the induction furnace cover 7;

[0054] Preferably, the voltage dividing pad 1, the upper heat preservation mold seat 15, the lower heat preservation mold seat 17 and the track kit 23 are all made of materials with high modulus and low magnetic conductivity. The materials with high modulus and low magnetic conductivity are one or several of alumina, magnesia, zirconia, tungsten and molybdenum;

[0055] As Figure 2 and Figure 3 shown, an upper magnetic core 9 is fixedly installed under the upper magnetic core fixing seat 8, and a lower magnetic core 12 is fixedly installed on the upper surface of the lower magnetic core fixing seat 11; the upper heat preservation mold seat 15 is provided with a first square through hole 16, the lower heat preservation mold seat 17 is provided with a second square through hole 18, and the track kit 23 is provided with a third square through hole. The upper end of the induction coil 14 is inserted into the first square through hole 16, and the lower end of the induction coil 14 is inserted into the second square through hole 18 and the third square through hole;

[0056] Preferably, both the upper magnetic core 9 and the lower magnetic core 12 are made of silicon steel, and both the upper magnetic core 9 and the lower magnetic core 12 are cuboids;

[0057] Preferably, both the upper heat preservation mold seat 15 and the lower heat preservation mold seat 17 are cuboid-shaped.

[0058] The upper magnetic core 9 penetrates through the first square through-hole 16 and is inserted into the upper end inside the induction coil 14, and the lower magnetic core 12 penetrates through the second square through-hole 18 and the third square through-hole and is inserted into the lower end inside the induction coil 14, thereby concentrating the inductance;

[0059] Both the upper heat-insulating die base 15 and the upper magnetic core fixing seat 8 are provided with first threaded holes 19, and the first screw 10 is threadedly connected inside the first threaded holes 19, thereby fixedly connecting the upper heat-insulating die base 15 and the upper magnetic core fixing seat 8;

[0060] Both the lower heat-insulating die base 17 and the lower magnetic core fixing seat 11 are provided with second threaded holes 20, and the second screw 13 is threadedly connected inside the second threaded holes 20 to fixedly connect the lower heat-insulating die base 17 and the lower magnetic core fixing seat 11;

[0061] As Figures 4 - 6 shown, a stepping motor 27 is fixedly installed inside the induction furnace cavity 3. The output shaft of the stepping motor 27 is fixedly connected with a connecting rod, and a horizontal material tray 28 is fixedly installed on the connecting rod. A part of the lower surface of the material tray 28 can be attached to the track kit 23. There is a gap between the upper surface of the material tray 28 and the upper heat-insulating die base 15. The material tray 28 is used to place the sample to be heated. By rotating the stepping motor 27, the material tray 28 is driven to feed the sample into the gap;

[0062] The outer wall surface 29 of the induction furnace cavity 3 is fixedly connected with a control box 5. A control system 37 and a heat dissipation circulator 38 are fixedly installed inside the control box 5. Both ends of the induction coil 14 extend out of the induction furnace cavity 3 and enter the control box 5, and are electrically connected to the control system 37; The induction coil 14 is wound by a hollow induction tube, and both ends thereof penetrate through the box body of the control system 37 and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator 38. The cold water inlet 39 of the heat dissipation circulator 38 is externally connected to the water outlet of the water tank through a hose, and the hot water outlet 40 of the heat dissipation circulator 38 is externally connected to the water inlet of the water tank through a hose. Specifically: A first hollow induction tube connector 34 is fixedly sleeved on the upper end of the induction coil 14, and a second hollow induction tube connector 35 is fixedly sleeved on the lower end of the induction coil 14. Both the first hollow induction tube connector 34 and the second hollow induction tube connector 35 are fixedly connected to the inner wall surface 33 of the induction furnace cavity 3 to fix and limit both ends of the induction coil 14; An outlet adapter 30, an inlet adapter 31 and a multi-core adapter 32 are fixedly connected to the outer wall surface 29 of the induction furnace cavity 3. The upper end of the induction coil 14 penetrates through the induction furnace cavity 3 and is connected to the outlet adapter 30, and the lower end of the induction coil 14 penetrates through the induction furnace cavity 3 and is connected to the inlet adapter 31. Both the outlet adapter 30 and the inlet adapter 31 are fixedly connected with a hollow induction tube extension 36;

[0063] Preferably, the coolant in the water tank is pure water, which can reduce scale formation;

[0064] Preferably, the coolant in the water tank is a fluorinated liquid, which can improve the heat dissipation efficiency;

[0065] Such as Figure 9 and Figure 13 As shown, the control system 37 includes a box body. Inside the box body, there is a circuit board. The circuit board integrates a storage unit and a control unit that are connected to each other. The GPIO pins of the circuit board are connected to a display screen 41, a knob 42, a Run key 43, an Enter key 44, numeric keys 45, a Down key 46, an Up key 47, an indicator light 48, an alarm light 49, a control system circuit port 50, a power connection terminal 51, and a PC connection terminal 52 arranged on the outer wall of the box body through jumpers;

[0066] The jumpers of the temperature sensor 21 and the stepper motor 27 are both connected to a multi-core adapter 32, and the multi-core adapter 32 is connected to the control system circuit port 50; The control system circuit port 50 is also electrically connected to the hollow induction tube extension 36;

[0067] The power connection terminal 51 is externally connected to the commercial power, the PC connection terminal 52 is connected to a PC. The indicator light 48 flashes to start the self-check of the control system 37. When the indicator light 48 is constantly on, the control system 37 is powered on, the display screen 41 is lit, the control system 37 is powered on, and the PC automatically enters the function interface. The induction heating parameters and the motion control of the stepper motor 27 are assisted to be set through the function interface.

[0068] Such as Figure 5 As shown, two hollow induction tube extensions 36 penetrate through the box body of the control system 37 and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator 38. The coolant from the external water tank enters the heat dissipation circulator 38 from the cold water inlet 39, flows through a hollow induction tube extension 36 and the induction coil 14 in sequence, absorbs the heat inside the induction furnace cavity 3, and then, after flowing out from the other hollow induction tube extension 36, enters through the hot water inlet of the heat dissipation circulator 38, and then flows out from the hot water outlet 40 and enters the water tank for cooling, circulating in this way to achieve heat dissipation.

[0069] For the convenience of understanding, the circuit schematic diagram of this embodiment is drawn, see Figure 8, including a water tank T, a hollow induction tube L, an ammeter A, a motor M, a resistor R, a temperature sensor t°, and a control system 37. The control system 37 is within the thick black wireframe. The electronic components involved in the control system 37 include the temperature sensor t°, a pump P, a controller C, alternating current AC, and a ground GND. The control system 37 has multiple functions, including a rectification function, outputting a pulse signal to control the motor M and thus control the feeding of the material tray 28, an inversion function, controlling the induction frequency to adjust the heating process of the hollow induction tube L, a temperature feedback function, adjusting the rotation speed of the water pump P, adjusting the induction heating time of the hollow induction tube L, a current and voltage detection function, and providing overload protection. It can also be expanded as needed by connecting the control system 37 to a PC for control.

[0070] The control system 37 is used to supply power to the stepper motor 27 and the induction coil 14, control the operation of the stepper motor 27, collect the real-time temperature uploaded by the temperature sensor 21, and set the heating conditions. The control system 37 interacts with a PC. The PC is installed with control software. For the interface of the software, see Figure 11 , and the parameters of the interface include: "Sample", "Temperature", "Time", "Current", "Voltage", "Frequency", "Flow Rate", and "Cycle". And the interface has the function of outputting induction heating parameters;

[0071] The "Cycle" parameter supports a variety of conventional motion controls. Refer to Figure 11 and Figure 12 , and the motion control includes five forms, namely: None cycle, Trigonometric Wave (abbreviated as Tri Wave), Triangle Wave (abbreviated as Tri Wave), Square Wave (abbreviated as Squ Wave), and SelfDefine control;

[0072] The interface includes nine options, namely "Sample", "Temperature", "Time", "Current", "Voltage", "Frequency", "Flow Rate", "Cycle", and "Setting". Their functions and parameter ranges are shown in Table 1. In the table, "Setting" includes the setting of "Log" log export, default operating parameters, and overload parameters;

[0073] Table 1 Functions and Parameter Ranges of Nine Options

[0074] Option Function Description Parameter Range / Remarks Sample Number of Samples ≤8 Temperature Heating Temperature ≤2400℃ Time Heating Time 0～1800s Cycle Rotation Speed / Current Electric Current 5～100A Voltage Voltage 0～110V Frequency Induction Frequency 1 - 50 kHz Flow Rate Flow Rate of Water - Coolant 10 - 300 mL / s Setting Other Settings /

[0075] Exemplarily, when inputting parameters, press the Up key 47 and the Down key 46 to select an option. After locking the option by pressing the Enter key 44, input the parameters by the numeric keys 45, then press the Enter key 44 to confirm, and it will be automatically saved.

[0076] Example 1

[0077] Taking the heating of 4 samples as an example, place them at intervals on the material tray 28, and use temperature and time as the operating conditions: In the first stage, heat up to 200 °C and run for 15 s; in the second stage, rise to 800 °C and run for 50 s; in the third stage, rise to 1300 °C and run for 360 s; the induction frequency is 30 kHz, and the flow rate of the water cooling liquid is 100 mL / s; the heating interval between every two samples is 300 s; through the PC, set "Sample" to 4, "Time" to "15", "50", "360" and "300"; "Temperature" to "200", "800" and "1300", without additional setting of voltage, current, induction frequency and water cooling liquid flow rate, and the default physical quantity values are shown in Table 2;

[0078] After the parameter setting is completed, turn the knob 42, and the stepper motor 27 rotates and drives the material tray 28 to rotate until the sample to be heated coincides with the upper heat preservation mold base 15 and the lower heat preservation mold base 17 in the vertical direction. The heating starts, and the indicator light 48 changes from being constantly on to flashing rapidly (3 Hz). After a few seconds, the electromagnetic induction device starts to operate, and the indicator light 57 changes to flashing slowly (1 Hz). The display screen 41 outputs multiple pieces of real-time data. After all 4 materials are synthesized, the induction heating automatically stops, and the water cooling cycle continues for heat dissipation. When the water temperature and the temperature of the hollow induction tube drop to the default temperature shown in Table 2, the water cooling cycle stops, the indicator light 48 becomes constantly on, disconnect the connection between the water tank and the cold water inlet 39, press the Up key 47, turn on the water pump, drain the water in the electromagnetic induction device, the indicator light 57 goes out, and turn off the electromagnetic induction device;

[0079] During the heating process, when an abnormality occurs in the electromagnetic induction device, such as current overload, temperature abnormality or motor jamming, the alarm light 49 flashes rapidly, and the control system 37 disconnects the connection between the stepper motor 27 and the induction coil 14 and the power supply to stop heating.

[0080] Table 2 shows the default physical quantity values during the operation of the electromagnetic induction device. The water cooling stop condition is triggered when the temperature conditions of both "water temperature" and "hollow induction tube" are met;

[0081] Table 2 Default Physical Quantity Values during the Operation of the Electromagnetic Induction Device

[0082]

[0083] Preferably, after mixing various metal powders with a mesh number of not less than 100, add an ethanol solution with a mass fraction of 75%, mix using a mechanical stirrer, place it in an oven, dry it at 60 - 80 °C, and use a mold and a hydraulic press to form it. The pressure for hydraulic forming is not less than 10 T, and the pressure holding time is not less than 1 min to obtain the sample to be heated, whose mass is less than 5 g and thickness is less than 2 mm.

[0084] Example 2

[0085] The only difference from Example 1 is that the feeding mode of the material tray 28 is changed from static to periodic reciprocating motion, and the motion of the stepping motor 27 is set to be a periodic motion as shown in Figure 10 shown, with a period of 9 s and a swing amplitude of 30°. The variation of the motion with time is shown in Table 3, where: through the "Cycle" parameter, select "Self Define", "Browse", "Initial", and "Enter" in sequence to complete custom control, parameter selection, and initialization. Click "Run" to start the control system 37, and the running process is presented in the form of a "Processing" progress bar.

[0086] Table 3 Variation of motion with time

[0087] Time / s 0 1.6 2.7 3.9 5.1 6.2 7.8 9.0 Angle / deg 0 30 30 0 0 -30 -30 0

Claims

1. An electromagnetic induction device for continuous synthesis of metal catalytic materials, characterized in that: The induction furnace cavity (3) comprises an induction furnace cover (7) connected to the induction furnace cavity (3) via bolts (4), a ventilation port (6) is provided on the induction furnace cover (7), and a sealing plug is connected to the ventilation port (6); A heating assembly is fixedly arranged inside the induction furnace cavity (3), the heating assembly comprising an induction coil (14) and an upper insulation mold base (15) and a lower insulation mold base (17) fixedly connected to the inner wall surface (33) of the induction furnace cavity (3), the upper insulation mold base (15) and the lower insulation mold base (17) are both provided with a groove (22), a temperature sensor (21) is fixedly installed inside the groove (22), and a track kit (23) is fixedly installed on the lower insulation mold base (17); The upper insulation mold base (15), the lower insulation mold base (17) and the track kit (23) are all provided with through holes for the two ends of the induction coil (14) to pass through; an upper magnetic core fixing seat (8) is fixedly installed on the top of the upper insulation mold base (15); a lower magnetic core fixing seat (13) is fixedly installed on the bottom of the lower insulation mold base (17); an upper magnetic core (9) is fixedly installed below the upper magnetic core fixing seat (8); a lower magnetic core (12) is fixedly installed above the lower magnetic core fixing seat (11); the upper magnetic core (9) and the lower magnetic core (12) pass through the through holes and are respectively plugged into the two ends of the induction coil (14); A stepper motor (27) is fixedly installed inside the induction furnace cavity (3), and the output shaft of the stepper motor (27) is fixedly connected to a horizontal material tray (28) through a connecting rod, the lower surface of the material tray (28) is in contact with the track kit (23), and a gap is left between the upper surface of the material tray (28) and the upper insulation mold base (15); The outer wall surface (29) of the induction furnace cavity (3) is fixedly connected to a control box (5), a control system (37) and a heat dissipation circulator (38) are fixedly installed inside the control box (5), and both ends of the induction coil (14) extend through the induction furnace cavity (3) and enter the control box (5), and are electrically connected to the control system (37); The induction coil (14) is formed by winding a hollow induction tube, and its two ends penetrate the box of the control system (37) and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator (38); the cold water inlet (39) of the heat dissipation circulator (38) is connected to the water outlet of an external water tank, and the hot water outlet (40) of the heat dissipation circulator (38) is connected to the water inlet of the external water tank; The temperature sensor (21) and the stepper motor (27) are both connected to a control system (37), and the control system (37) is connected to a mains power supply and a PC.

2. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 1, characterized in that: The induction furnace cover (7) and the induction furnace cavity (3) are both made of glass.

3. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 2, characterized in that: It also includes a pressure dividing pad (1) and a sealing ring (2); The pressure dividing pad (1), the induction furnace cover (7) and the induction furnace cavity (3) are all fixedly connected with a plurality of connecting ears, the connecting ears are provided with bolt holes, and the bolts (4) pass through the bolt holes to sequentially connect the pressure dividing pad (1), the induction furnace cover (7) and the induction furnace cavity (3); The sealing ring (2) is fixedly installed under the induction furnace cover (7) and fits with the upper edge of the induction furnace cavity (3).

4. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 3, characterized in that: The pressure dividing pad (1), the upper heat-insulating mold base (15), the lower heat-insulating mold base (17) and the track kit (23) are all made of a material with a high modulus and low magnetic conductivity.

5. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 4, characterized in that: The high modulus and low magnetic permeability material is one or more of aluminum oxide, magnesium oxide, zirconium oxide, tungsten and molybdenum.

6. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to any one of claims 1 to 5, characterized in that: It also includes a mold base fixing plate (26), which is fixedly connected to the backs of the upper heat-insulating mold base (15) and the lower heat-insulating mold base (17), and the mold base fixing plate (26) is fixedly connected to the inner wall surface (33) of the induction furnace cavity (3).

7. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to any one of claims 1 to 5, characterized in that: The two ends of the induction coil (14) are respectively and correspondingly fixedly sleeved with a first hollow induction tube connector (34) and a second hollow induction tube connector (35), and the first hollow induction tube connector (34) and the second hollow induction tube connector (35) are both fixedly connected to the inner wall surface (33) of the induction furnace cavity (3); The outer wall surface (29) of the induction furnace cavity (3) is fixedly connected with an outlet adapter (30) and an inlet adapter (31); the two ends of the induction coil (14) pass through the induction furnace cavity (3) and are respectively fixedly connected to the outlet adapter (30) and the inlet adapter (31); the outlet adapter (30) and the inlet adapter (31) are both fixedly connected with a hollow induction tube extension tube (36); the two hollow induction tube extension tubes (36) pass through the box of the control system (37) and are respectively connected to the hot water inlet and the cold water outlet of the heat dissipation circulator (38).

8. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 7, characterized in that: A circuit board is provided inside the box of the control system (37), the circuit board is integrated with a storage unit and a control unit which are connected to each other, and the GPIO pins of the circuit board are connected to a display screen (41), a knob (42), a Run key (43), an Enter key (44), numeric keys (45), a Down key (46), an Up key (47), an indicator light (48), an alarm light (49), a control system circuit port (50), a power connection terminal (51) and a PC connection terminal (52) arranged on the outer wall of the box through jumpers. The temperature sensor (21) and the stepper motor (27) are connected to the control system circuit port (50) via a wire, and the control system circuit port (50) is connected to the hollow induction tube extension tube (36) via an electric wire; The power connection terminal (51) is externally connected to the mains, and the PC connection terminal (52) is connected to a PC.

9. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to claim 8, characterized in that: The outer wall surface (29) of the induction furnace cavity (3) is also fixedly connected to a multi-core adapter (32), the jumper wires of the stepping motor (27) and the temperature sensor (21) are connected to the multi-core adapter (32), and the multi-core adapter (32) is connected to the control system circuit port (50).

10. The electromagnetic induction device for continuous synthesis of metal catalytic materials according to any one of claims 1 to 5, characterized in that: The upper magnetic core (9) and the lower magnetic core (12) are both rectangular parallelepipeds made of silicon steel.

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