Rapid cooling device of smelting furnace for high-performance rare earth permanent magnetic material

Abstract

The utility model relates to the technical field of smelting furnace cooling, in particular to a smelting furnace rapid cooling device for high-performance rare earth permanent magnet materials, which comprises a top plate, two supporting frames are respectively welded on two sides of the bottom of the top plate, a bottom plate is welded at the bottoms of the supporting frames, and an electric telescopic rod is fixed at the top of the bottom plate through a bolt. A movable platform is fixed to the top of the electric telescopic rod, the bottom of the movable platform is connected with a first conveying air pipe through a flange, a plurality of second conveying air pipes are welded to the outer side of the first conveying air pipe at equal intervals, and a plurality of air outlets are formed in the tops of the second conveying air pipes at equal intervals. When the smelting furnace is cooled, the spreading range of cold air in the furnace can be expanded from the bottom in the furnace, meanwhile, the cold air injected into the furnace can comprehensively convert and discharge high-temperature gas in the furnace from bottom to top, the cooling speed of the smelting furnace is increased, and follow-up operation of operators is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting furnace cooling, in particular to a smelting furnace rapid cooling device for high-performance rare earth permanent magnet materials. Background Art

[0002] The melting furnace utilizes a 200-2500Hz medium-frequency power supply for induction heating, with a power range of 20-2500kW. Due to its characteristics, it is also known as a medium-frequency electric furnace. It is primarily used for melting and heating precious metals such as gold, platinum, silver, copper, iron, stainless steel, aluminum alloys, and other metals. It is ideal for university laboratories, research institutes, jewelry processing, and precision castings. The power supply utilizes imported IGBT power devices, which are more integrated and miniaturized, achieving an effective output power of over 90%, saving 60% in energy compared to traditional thyristor medium-frequency furnaces.

[0003] When using a melting furnace to melt high-performance rare earth permanent magnet materials, high temperature will be generated inside the melting furnace. After a certain number of uses, the operator needs to clean the inside of the melting furnace. Before cleaning, the furnace needs to be completely cooled. Therefore, a rapid cooling device is needed to quickly cool the melting furnace.

[0004] An existing rapid cooling device for a smelting furnace used for high-performance rare earth permanent magnet materials chooses to inject cold air into the furnace for cooling during use. However, after the cold air enters the furnace, it spreads slowly and over a small range, and cannot quickly convert the high-temperature gas in the furnace into cooling gas or carry it out of the furnace body, making it impossible to quickly cool the smelting furnace.

[0005] For this purpose, a rapid cooling device for a smelting furnace used for high-performance rare earth permanent magnet materials is proposed. Utility Model Content

[0006] The purpose of the present invention is to provide a rapid cooling device for a smelting furnace of high-performance rare earth permanent magnet materials to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A rapid cooling device for a smelting furnace of high-performance rare earth permanent magnet materials, comprising a top plate, two support frames are welded on both sides of the bottom of the top plate, a bottom plate is welded to the bottom of the support frame, an electric telescopic rod is fixed to the top of the bottom plate by bolts, a mobile platform is fixed to the top of the electric telescopic rod, and a first conveying air supply is connected to the bottom of the mobile platform by a flange. Tube, multiple second air delivery ducts are welded at equal distances on the outside of the first air delivery duct, multiple air outlets are opened at equal distances on the top of the second air delivery duct, a fan casing is welded on the bottom of the first air delivery duct, a fan is installed inside the fan casing through a bearing, a motor is fixed to the bottom of the fan casing by bolts, a refrigeration fan body is fixed on the top of the top plate, one side of the refrigeration fan body is connected to an air outlet duct, one end of the air outlet duct is connected to a high-temperature resistant telescopic air duct, one end of the high-temperature resistant telescopic air duct passes through and extends out of the interior of the mobile platform and is connected with the interior of the first air delivery duct.

[0007] Preferably, a fixed caster is fixed to each side of the bottom of the base plate by bolts, and a plurality of reinforcing rods are welded to the outside of the support frame, and one end of the reinforcing rod is welded to the bottom of the top plate.

[0008] Preferably, the second air delivery duct is communicated with the interior of the first air delivery duct, and the output end of the motor extends into the interior of the blower housing and is fixedly connected to the bottom end of the fan shaft.

[0009] Preferably, a slide groove is provided on one side of the support frame, and a slider is welded on both sides of the movable platform, and the slider is slidably installed inside the slide groove.

[0010] Preferably, a plurality of air slots are provided on the top of the fan housing, and a filter is fixed inside each of the plurality of air slots.

[0011] Preferably, a plurality of exhaust vents are provided inside the mobile platform, and the exhaust vents run through the interior of the mobile platform.

[0012] Compared with the prior art, the present invention provides a rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials, which has the following beneficial effects:

[0013] The spray range of cold air inside the smelting furnace can be expanded through multiple second air delivery ducts and air outlets, and then the rotation of the fan can drive the flow rate of air inside the smelting furnace, and discharge the high-temperature gas inside the smelting furnace while accelerating the diffusion rate of cold air in the furnace, accelerating the heat exchange rate between the cold air and the high-temperature gas in the furnace, and accelerating the temperature drop rate in the furnace. When the smelting furnace is cooled by the device, it can start from the bottom of the furnace, expand the diffusion range of cold air in the furnace, and at the same time, the cold air injected into the furnace can fully transform and discharge the high-temperature gas in the furnace from bottom to top, thereby improving the cooling rate of the smelting furnace and facilitating subsequent operations of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of the utility model;

[0015] Figure 2 This is a side structural diagram of the present utility model;

[0016] Figure 3 This is a schematic diagram of the top view of the fan housing, the first air delivery duct and the second air delivery duct of the utility model;

[0017] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0018] In the figure: 1. Top plate; 2. Refrigeration fan body; 3. Air outlet duct; 4. High-temperature resistant telescopic air duct; 5. Support frame; 6. Reinforcement rod; 7. Mobile platform; 8. Electric telescopic rod; 9. Bottom plate; 10. Fixed casters; 11. Second air duct; 12. Fan housing; 13. Motor; 14. Fan; 15. First air duct; 16. Slide; 17. Slider; 18. Air outlet; 19. Air trough; 20. Exhaust vent. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Two support frames 5 are welded to both sides of the bottom of the top plate 1, and a bottom plate 9 is welded to the bottom of the support frame 5. An electric telescopic rod 8 is fixed to the top of the bottom plate 9 by bolts. A mobile platform 7 is fixed to the top of the electric telescopic rod 8. A first air duct 15 is connected to the bottom of the mobile platform 7 by a flange. A plurality of second air ducts 11 are welded to the outside of the first air duct 15 at equal distances. A plurality of air outlets 18 are opened at equal distances on the top of the second air duct 11. A fan housing 12 is welded to the bottom of the first air duct 15. A fan 14 is installed inside through a bearing, a motor 13 is fixed to the bottom of the fan casing 12 by bolts, a refrigeration fan body 2 is fixed to the top of the top plate 1, one side of the refrigeration fan body 2 is connected to an air outlet duct 3, one end of the air outlet duct 3 is connected to a high-temperature resistant telescopic air duct 4, one end of the high-temperature resistant telescopic air duct 4 passes through and extends out of the interior of the mobile platform 7 and is connected to the interior of the first conveying air duct 15, the second conveying air duct 11 is connected to the interior of the first conveying air duct 15, and the output end of the motor 13 extends into the interior of the fan casing 12 and is fixedly connected to the bottom end of the fan 14 rotating shaft.

[0021] Specifically, such as Figure 1 、 Figure 2 and Figure 3As shown, by moving the entire device, the first air delivery duct 15 is moved to the top of the smelting furnace, and then the mobile platform 7 is driven downward by controlling the contraction of the output ends of the two electric telescopic rods 8. By controlling the downward movement of the mobile platform 7, the first air delivery duct 15 can be driven to be inserted into the interior of the smelting furnace. Since the fan housing 12 is fixed at the bottom of the first air delivery duct 15, the fan housing 12 is inserted into the bottom end of the smelting furnace, and then the outside air is cooled by the refrigeration fan body 2 and injected into the interior of the high-temperature resistant telescopic air duct 4 through the air outlet pipe 3. The cold air is then transmitted to the interior of the first air delivery duct 15 through the high-temperature resistant telescopic air duct 4. Since a plurality of second air delivery ducts 11 are fixed at equal distances on the outside of the first air delivery duct 15, and the second air delivery ducts 11 are connected to the interior of the first air delivery duct 15, the cold air will be injected into the interior of the plurality of second air delivery ducts 11 through the first air delivery duct 15. A plurality of air outlets 18 are provided at equal intervals on the top of the air supply pipe 11. Therefore, the cold air inside the second air supply pipe 11 will be ejected through the air outlet 18. The multiple second air supply pipes 11 and the air outlet 18 can expand the ejection range of the cold air inside the smelting furnace. Then, by controlling the rotation of the output end of the motor 13, the fan 14 installed inside the fan housing 12 is driven to rotate. The rotation of the fan 14 can drive the flow speed of the air inside the smelting furnace, and the high-temperature gas inside the smelting furnace can be discharged while accelerating the diffusion speed of the cold air in the furnace, accelerating the heat exchange speed between the cold air and the high-temperature gas in the furnace, and accelerating the temperature drop speed in the furnace. When the smelting furnace is cooled by the device, it can start from the bottom of the furnace, expand the diffusion range of the cold air in the furnace, and enable the cold air injected into the furnace to fully convert and discharge the high-temperature gas in the furnace from bottom to top, thereby improving the cooling speed of the smelting furnace and facilitating subsequent operations of the operator.

[0022] Example 2: A fixed caster 10 is fixed to both sides of the bottom of the base plate 9 by bolts, and a plurality of reinforcing rods 6 are welded to the outside of the support frame 5, one end of the reinforcing rod 6 is welded to the bottom of the top plate 1, a slide groove 16 is provided on one side of the support frame 5, and a slider 17 is welded on both sides of the mobile platform 7, and the slider 17 is slidably installed inside the slide groove 16, a plurality of air slots 19 are provided on the top of the fan housing 12, and a filter is fixed inside each of the plurality of air slots 19, a plurality of exhaust outlets 20 are provided inside the mobile platform 7, and the exhaust outlets 20 pass through the interior of the mobile platform 7.

[0023] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, since a fixed caster 10 is fixed on both sides of the bottom of the base plate 9, the entire device can be easily moved through the fixed casters 10. Since a plurality of reinforcing rods 6 are welded on the outside of the support frame 5 and fixedly connected to the bottom of the top plate 1, the strength and stability of the entire device can be improved by the plurality of reinforcing rods 6, and the safety of use can be guaranteed. In the process of controlling the mobile platform 7 to slide up and down, the sliders 17 fixed on both sides of the mobile platform 7 will slide up and down inside the slide groove 16, thereby ensuring the stability of the mobile platform 7 during the up and down movement. Since a plurality of exhaust vents 20 are opened inside the mobile platform 7, the plurality of exhaust vents 20 can ensure that when the bottom of the mobile platform 7 is completely covered on the top of the smelting furnace, the gas in the furnace can also be discharged through the exhaust vents 20, thereby ensuring the normal use of the device.

[0024] It should be noted that the refrigeration fan body 2, electric telescopic rod 8 and motor 13 described in this article are respectively products and devices that can be realized in the prior art, so their structures and working principles are not described in detail in this article.

[0025] Working principle: When in use, move the entire device so that the first conveying air duct 15 moves to the top of the smelting furnace, and then control the contraction of the output ends of the two electric telescopic rods 8 to drive the mobile platform 7 to move downward. By controlling the downward movement of the mobile platform 7, the first conveying air duct 15 can be driven to be inserted into the interior of the smelting furnace. The outside air is cooled by the refrigeration fan body 2 and then injected into the interior of the high-temperature resistant telescopic air duct 4 through the air outlet pipe 3. The cold air is then transmitted to the interior of the first conveying air duct 15 through the high-temperature resistant telescopic air duct 4. The cold air will be injected into multiple second conveying air ducts through the first conveying air duct 15. Inside the air duct 11, the cold air inside the second conveying air duct 11 will be ejected through the air outlet 18. The multiple second conveying air ducts 11 and the air outlet 18 can expand the injection range of the cold air inside the smelting furnace. Then, by controlling the rotation of the output end of the motor 13, the fan 14 installed inside the fan housing 12 is driven to rotate. The rotation of the fan 14 can drive the flow speed of the air inside the smelting furnace, and while discharging the high-temperature gas inside the smelting furnace, it can also speed up the diffusion speed of the cold air in the furnace, speed up the heat exchange speed between the cold air and the high-temperature gas in the furnace, and speed up the temperature drop rate in the furnace.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials, comprising a top plate (1), characterized in that: Two support frames (5) are welded to both sides of the bottom of the top plate (1), a bottom plate (9) is welded to the bottom of the support frame (5), an electric telescopic rod (8) is fixed to the top of the bottom plate (9) by bolts, a mobile platform (7) is fixed to the top of the electric telescopic rod (8), a first air duct (15) is connected to the bottom of the mobile platform (7) by a flange, a plurality of second air ducts (11) are welded to the outside of the first air duct (15) at equal distances, a plurality of air outlets (18) are opened at equal distances on the top of the second air duct (11), A fan housing (12) is welded to the bottom of the first air delivery duct (15), a fan (14) is installed inside the fan housing (12) through a bearing, a motor (13) is fixed to the bottom of the fan housing (12) through bolts, a refrigeration fan body (2) is fixed to the top of the top plate (1), one side of the refrigeration fan body (2) is connected to an air outlet pipe (3), one end of the air outlet pipe (3) is connected to a high-temperature resistant telescopic air duct (4), and one end of the high-temperature resistant telescopic air duct (4) passes through and extends out of the interior of the mobile platform (7) and is connected to the interior of the first air delivery duct (15).

2. The rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials according to claim 1, characterized in that: A fixed caster (10) is fixed to each side of the bottom of the base plate (9) by bolts, and a plurality of reinforcing rods (6) are welded to the outside of the support frame (5), and one end of the reinforcing rod (6) is welded to the bottom of the top plate (1).

3. The rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials according to claim 1, characterized in that: The second air delivery duct (11) is connected to the interior of the first air delivery duct (15), and the output end of the motor (13) extends into the interior of the blower housing (12) and is fixedly connected to the bottom end of the fan (14) shaft.

4. The rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials according to claim 3, characterized in that: A slide groove (16) is provided on one side of the support frame (5), and a slider (17) is welded on both sides of the movable platform (7), and the slider (17) is slidably installed inside the slide groove (16).

5. The rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials according to claim 1, characterized in that: A plurality of air slots (19) are provided on the top of the fan housing (12), and a filter is fixed inside each of the plurality of air slots (19).

6. The rapid cooling device for a smelting furnace for high-performance rare earth permanent magnet materials according to claim 1, characterized in that: A plurality of air exhaust ports (20) are provided inside the mobile platform (7), and the air exhaust ports (20) run through the interior of the mobile platform (7).

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