Waste heat recovery device and rare earth metal electrolytic furnace thereof

Abstract

The utility model relates to the technical field of rare earth metal smelting and energy utilization, and discloses a waste heat recovery device and a rare earth metal electrolytic furnace and a waste heat recovery tank thereof. The cleaning structure comprises a rotating disc, the rotating disc is arranged in the waste heat recovery tank, and the rotating disc is in a disc shape; the waste heat recovery structure comprises a first heat absorption pipe, and the first heat absorption pipe is arranged in the waste heat recovery tank; the first fixing plate is fixedly installed at the top of the waste heat recovery tank, the cleaning structure further comprises a fixing frame plate fixedly installed in the waste heat recovery tank, and a hole is formed in the fixing frame plate, so that the purpose of cleaning and scraping impurities on the filtering hole is achieved, manual cleaning of the device is replaced, and the cleaning efficiency is improved. The condition that smoke impurities block the gas filtering holes is reduced, the manual cleaning pressure is relieved, the smoke filtering rate of the device is increased, the waste heat recovery efficiency is improved, and the use experience of the device is optimized.

Description

Technical Field

[0001] The utility model belongs to the technical field of rare earth metal smelting and energy utilization, and specifically relates to a waste heat recovery device and a rare earth metal electrolytic furnace thereof. Background Art

[0002] During the rare earth metal smelting process, the electrolytic furnace will generate a large amount of waste heat. If this waste heat is not recycled, it will not only cause energy waste but also cause thermal pollution to the environment.

[0003] The utility model with announcement number CN216115462U belongs to the field of rare earth metal smelting technology, and specifically relates to a waste heat recovery device for rare earth metal smelting processing, including a flue gas pipe, a heat absorbing water tank is fixedly connected to the outside of the flue gas pipe, a heat absorbing pipe is fixedly connected to the inside of the heat absorbing water tank, a water outlet pipe is fixedly connected to the heat absorbing water tank, one end of the heat absorbing pipe is fixedly connected to a connecting pipe, a connecting cover is threadedly connected to the inside of the connecting pipe, a water inlet pipe is fixedly connected to the inside of the connecting cover, a sealing ring is bonded to the inside of the connecting pipe, and a limiting block is fixedly connected to the outside of the connecting pipe. The utility model adds structures such as a heat absorbing pipe and a heat preservation tube to the heat absorbing water tank, and when in use, the heat absorbing pipe can directly contact the flue gas inside the flue gas pipe, and the water flow can preheat the water through the heat absorbing pipe before entering the heat absorbing water tank, thereby effectively improving the heat absorption efficiency of the device.

[0004] However, the above patent still has the following problems: when the waste heat in the flue gas is recovered and utilized, the impurities in the flue gas will clog the holes of the filter plate, affecting the heat energy transfer efficiency in the flue gas. The impurities clogged on the filter plate need to be cleaned. The waste heat of the device is used to heat the injected water to recover the waste heat. The water heating rate is slow and the waste heat recovery structure needs to be improved.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above-mentioned technical problem of smoke impurities blocking the filter holes, the basic concept of the technical solution adopted by the utility model is:

[0007] A waste heat recovery device, comprising:

[0008] Waste heat recovery tank, the waste heat recovery tank is placed on the ground;

[0009] The cleaning structure includes a turntable, which is arranged inside the waste heat recovery tank and is in the shape of a disc;

[0010] A waste heat recovery structure, the waste heat recovery structure comprises a first heat absorption pipe, and the first heat absorption pipe is arranged inside the waste heat recovery tank;

[0011] The first fixing plate is fixedly installed on the top of the waste heat recovery tank.

[0012] As a preferred embodiment of the utility model, the cleaning structure also includes a fixed frame plate fixedly installed inside the waste heat recovery tank, a hole is opened inside the fixed frame plate, a filter hole plate is fixedly installed in the hole, a cleaning brush plate is fixedly installed on the outer wall of one side of the turntable, and the outer wall of the cleaning brush plate is in close contact with the outer wall of the filter hole plate.

[0013] As a preferred embodiment of the utility model, the waste heat recovery structure also includes a partition fixedly installed inside the waste heat recovery tank, a group of holes are opened inside the partition, one end of the first heat absorption tube is fixedly installed in the holes inside the partition, an air outlet pipe is fixedly installed on the top of the waste heat recovery tank, the other end of the first heat absorption tube is fixedly installed inside the air outlet pipe, a first sealing cover plate is fixedly installed on the front side of the waste heat recovery tank, and a water pipe is fixedly installed inside the first sealing cover plate.

[0014] As a preferred embodiment of the utility model, the waste heat recovery structure also includes a first servo motor fixedly installed on the top of the first fixed plate, a first rotating rod is rotatably installed on the bottom of the first fixed plate, the output shaft of the first servo motor is fixedly connected to one end of the first rotating rod through a coupling, a second rotating rod is rotatably installed inside the waste heat recovery tank, one end of the first rotating rod extends and is fixedly connected to one end of the second rotating rod, a fixed sleeve is fixedly installed on the outer wall of the second rotating rod, and twelve groups of stirring plates are fixedly installed on the outer wall of the fixed sleeve.

[0015] As a preferred embodiment of the utility model, a first pulley is fixedly installed on the outer wall of the first rotating rod, a hole is opened on the top of the waste heat recovery tank, and a third rotating rod is rotatably installed in the hole, a second pulley is fixedly installed on the outer wall of the third rotating rod, a transmission belt is sleeved and installed between the first pulley and the second pulley, one end of the third rotating rod extends to the interior of the waste heat recovery tank, a limiting ring plate is fixedly installed on the inner wall of one side of the waste heat recovery tank, the third rotating rod is rotatably installed inside the limiting ring plate, and a first circular bevel gear is fixedly installed on one end of the third rotating rod.

[0016] As a preferred embodiment of the utility model, a fixed ring plate is fixedly installed on the inner wall of one side of the waste heat recovery tank, a fourth rotating rod is rotatably installed inside the fixed ring plate, a second circular bevel gear is fixedly installed on the outer wall of the fourth rotating rod, a fifth rotating rod is fixedly installed at one end of the fourth rotating rod, the fifth rotating rod is fixedly installed inside the turntable, the first circular bevel gear is meshed with the second circular bevel gear, a hole is opened on the outer wall of one side of the waste heat recovery tank, and a first flue gas pipe is fixedly installed in the hole.

[0017] A rare earth metal electrolytic furnace comprises a waste heat recovery device as described in any one of the above items and an electrolytic furnace body, a second fixed plate is fixedly installed on one side outer wall of the electrolytic furnace body, an electric control box is fixedly installed on one side outer wall of the second fixed plate, a second sealing cover plate is clamped and installed on the top of the electrolytic furnace body, a second servo motor is fixedly installed on the top of the second sealing cover plate, a first hydraulic cylinder is fixedly installed on the top of the second fixed plate, a first hydraulic push rod is fixedly installed on the bottom of the second fixed plate, an output end of the first hydraulic cylinder is fixedly connected to one end of the first hydraulic push rod, a third fixed plate is fixedly installed on the top of the second sealing cover plate, the other end of the first hydraulic push rod is fixedly connected to the top of the third fixed plate, two groups of dampers are arranged between the second fixed plate and the third fixed plate, a return spring rod is fixedly installed on the top of the damper, one end of the return spring rod is fixedly connected to the top of the third fixed plate, a stirring rod is rotatably installed on the bottom of the second sealing cover plate, the output shaft of the second servo motor is fixedly connected to one end of the stirring rod through a coupling, and the electrolytic furnace body is electrically connected to the electric control box.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. To achieve the purpose of cleaning and scraping impurities on the filter holes, instead of manual cleaning of the device, reduce the situation of flue gas impurities blocking the filter holes, reduce the pressure of manual cleaning, increase the filtration rate of the device for flue gas, improve the efficiency of waste heat recovery, and optimize the use experience of the device.

[0020] 2. To achieve the purpose of flue gas transportation and waste heat recovery, heat water through waste heat, improve the efficiency of water heating, improve waste heat recovery efficiency, and improve resource utilization efficiency.

[0021] 3. To achieve the purpose of processing rare earth raw materials and conveying flue gas, improve the processing efficiency of rare earth metals, improve the sealing degree of the device, improve the safety of the device, and enhance the durability of the device.

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 It is a front view of the utility model;

[0025] Figure 2 This is the internal structure diagram of the waste heat recovery tank of the utility model;

[0026] Figure 3 This is a schematic diagram of the electrolytic furnace body structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the first fixing plate structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the fixed frame structure of the utility model;

[0029] Figure 6 This is a schematic diagram of the turntable structure of the utility model;

[0030] Figure 7 This is the node diagram of part A of the utility model.

[0031] In the figure: 10, waste heat recovery tank; 11, first sealing cover plate; 12, water pipe; 13, exhaust pipe; 14, first flue gas pipe; 15, partition; 16, fixed frame plate; 17, filter hole plate; 18, first fixed plate; 19, first servo motor; 20, first rotating rod; 21, second rotating rod; 22, fixed sleeve; 23, stirring plate; 24, third rotating rod; 25, first pulley; 26, second pulley; 27, transmission belt; 28, limit Ring plate; 29, first circular bevel gear; 30, fixed ring plate; 31, second circular bevel gear; 32, fourth rotating rod; 33, fifth rotating rod; 34, turntable; 35, cleaning brush plate; 36, second fixed plate; 37, electrolytic furnace body; 38, electric control box; 39, second sealing cover plate; 40, second servo motor; 41, third fixed plate; 42, first hydraulic cylinder; 43, first hydraulic push rod; 44, return spring rod; 45, first heat absorption tube. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0033] Embodiment 1: A waste heat recovery device and a rare earth metal electrolysis furnace thereof, specifically Figure 1 and Figure 2 As shown, it includes a waste heat recovery tank 10, which is placed on the ground; a cleaning structure, which includes a turntable 34, which is arranged inside the waste heat recovery tank 10 and is in the shape of a disc; a waste heat recovery structure, which includes a first heat absorption pipe 45, which is arranged inside the waste heat recovery tank 10; and a first fixing plate 18, which is fixedly installed on the top of the waste heat recovery tank 10. The filter plate is cleaned by the cleaning structure, and the waste heat recovery efficiency is accelerated by the waste heat recovery structure.

[0034] Specific as Figure 1 , Figure 5 and Figure 6As shown, the cleaning structure also includes a fixed frame plate 16 fixedly installed inside the waste heat recovery tank 10, a hole is opened inside the fixed frame plate 16, a filter hole plate 17 is fixedly installed in the hole, a cleaning brush plate 35 is fixedly installed on the outer wall of one side of the rotating disk 34, and the outer wall of the cleaning brush plate 35 is closely attached to the outer wall of the filter hole plate 17. When the rotating disk 34 rotates, the cleaning brush plate 35 is driven to clean and scrape the outer wall of the filter hole plate 17.

[0035] According to the above conclusions, by fixing the structure of the frame plate 16, the filter hole plate 17, the turntable 34 and the cleaning brush plate 35, the purpose of cleaning and scraping the impurities on the filter holes is achieved, replacing manual cleaning of the device, reducing the situation where flue gas impurities block the filter holes, reducing manual cleaning pressure, improving the device's filtration rate for flue gas, improving the efficiency of waste heat recovery, and optimizing the user experience of the device.

[0036] Embodiment 2: Based on Embodiment 1, the specific Figure 1 , Figure 2 and Figure 4 As shown, the waste heat recovery structure also includes a partition 15 fixedly installed inside the waste heat recovery tank 10, a group of holes are opened inside the partition 15, one end of the first heat absorption pipe 45 is fixedly installed in the hole inside the partition 15, an outlet pipe 13 is fixedly installed on the top of the waste heat recovery tank 10, the other end of the first heat absorption pipe 45 is fixedly installed inside the outlet pipe 13, a first sealing cover plate 11 is fixedly installed on the front side of the waste heat recovery tank 10, and a water pipe 12 is fixedly installed inside the first sealing cover plate 11. The flue gas is transported to the inside of the first heat absorption pipe 45 through the partition 15, the flue gas is output through the outlet pipe 13, and the water is injected and output through the water pipe 12.

[0037] Specific as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, the waste heat recovery structure also includes a first servo motor 19 fixedly mounted on the top of the first fixed plate 18, a first rotating rod 20 is rotatably mounted on the bottom of the first fixed plate 18, the output shaft of the first servo motor 19 is fixedly connected to one end of the first rotating rod 20 through a coupling, a second rotating rod 21 is rotatably mounted inside the waste heat recovery tank 10, one end of the first rotating rod 20 extends and is fixedly connected to one end of the second rotating rod 21, a fixed sleeve 22 is fixedly mounted on the outer wall of the second rotating rod 21, and twelve groups of stirring plates 23 are fixedly mounted on the outer wall of the fixed sleeve 22. Start the first servo motor 19, drive the first rotating rod 20 to rotate, drive the second rotating rod 21 to rotate, drive the stirring plates 23 to stir and mix the water, and improve the water heating efficiency.

[0038] Specific as Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, a first pulley 25 is fixedly installed on the outer wall of the first rotating rod 20, a hole is opened on the top of the waste heat recovery tank 10, and a third rotating rod 24 is rotatably installed in the hole, a second pulley 26 is fixedly installed on the outer wall of the third rotating rod 24, a transmission belt 27 is sleeved and installed between the first pulley 25 and the second pulley 26, one end of the third rotating rod 24 extends to the inside of the waste heat recovery tank 10, a limiting ring plate 28 is fixedly installed on one side of the inner wall of the waste heat recovery tank 10, the third rotating rod 24 is rotatably installed inside the limiting ring plate 28, and a first circular bevel gear 29 is fixedly installed on one end of the third rotating rod 24. When the first rotating rod 20 rotates, the third rotating rod 24 is driven to rotate by the first pulley 25, the second pulley 26 and the transmission belt 27, and the first circular bevel gear 29 is driven to rotate.

[0039] Specific as Figure 1 , Figure 6 and Figure 7 As shown, a fixed ring plate 30 is fixedly installed on the inner wall of one side of the waste heat recovery tank 10, a fourth rotating rod 32 is rotatably installed inside the fixed ring plate 30, a second circular bevel gear 31 is fixedly installed on the outer wall of the fourth rotating rod 32, a fifth rotating rod 33 is fixedly installed at one end of the fourth rotating rod 32, the fifth rotating rod 33 is fixedly installed inside the rotating disk 34, the first circular bevel gear 29 is meshed with the second circular bevel gear 31, a hole is opened on the outer wall of one side of the waste heat recovery tank 10, and a first flue gas pipe 14 is fixedly installed in the hole. When the first circular bevel gear 29 rotates, it drives the first circular bevel gear 29 and the second circular bevel gear 31 to mesh, drives the fourth rotating rod 32 to rotate inside the fixed ring plate 30, drives the fifth rotating rod 33 to rotate, and drives the rotating disk 34 to rotate.

[0040] According to the above, through the structures of the first sealing cover plate 11, the water pipe 12, the air outlet pipe 13, the first flue gas pipe 14, the partition 15, the first fixed plate 18, the first servo motor 19, the first rotating rod 20, the second rotating rod 21, the fixed sleeve 22, the stirring plate 23, the third rotating rod 24, the first pulley 25, the second pulley 26, the transmission belt 27, the limiting ring plate 28, the first circular bevel gear 29, the fixed ring plate 30, the second circular bevel gear 31, the fourth rotating rod 32 and the fifth rotating rod 33, the purpose of transporting the flue gas and recycling the waste heat is achieved, the water is heated by the waste heat, the efficiency of water heating is improved, the waste heat recovery efficiency is improved, and the utilization efficiency of resources is improved.

[0041] Embodiment 3: Based on Embodiment 1 and Embodiment 2, the specific Figure 1 and Figure 3As shown, a rare earth metal electrolysis furnace comprises any of the waste heat recovery devices described above and an electrolysis furnace body 37, a second fixing plate 36 is fixedly mounted on one side outer wall of the electrolysis furnace body 37, an electric control box 38 is fixedly mounted on one side outer wall of the second fixing plate 36, a second sealing cover plate 39 is clamped and mounted on the top of the electrolysis furnace body 37, a second servo motor 40 is fixedly mounted on the top of the second sealing cover plate 39, a first hydraulic cylinder 42 is fixedly mounted on the top of the second fixing plate 36, a first hydraulic push rod 43 is fixedly mounted on the bottom of the second fixing plate 36, and an output end of the first hydraulic cylinder 42 is connected to the first hydraulic push rod 43. One end of the rod 43 is fixedly connected, the third fixed plate 41 is fixedly installed on the top of the second sealing cover plate 39, the other end of the first hydraulic push rod 43 is fixedly connected to the top of the third fixed plate 41, two groups of dampers are arranged between the second fixed plate 36 and the third fixed plate 41, a return spring rod 44 is fixedly installed on the top of the damper, one end of the return spring rod 44 is fixedly connected to the top of the third fixed plate 41, a stirring rod is rotatably installed on the bottom of the second sealing cover plate 39, the output shaft of the second servo motor 40 is fixedly connected to one end of the stirring rod through a coupling, and the electrolytic furnace body 37 is electrically connected to the electric control box 38. Place the rare earth metal raw material inside the electrolytic furnace body 37, start the first hydraulic cylinder 42 to drive the first hydraulic push rod 43 downward, clamp the second sealing cover plate 39 on the top of the electrolytic furnace body 37, start the second servo motor 40 to drive the stirring rod to rotate, start the electric control box 38 to process the rare earth raw material, and transport the flue gas generated by the rare earth metal processing to the inside of the waste heat recovery tank 10 through the first flue gas pipe 14.

[0042] In summary, through the structure of the second fixed plate 36, the electrolytic furnace body 37, the electric control box 38, the second sealing cover plate 39, the second servo motor 40, the third fixed plate 41, the first hydraulic cylinder 42, the first hydraulic push rod 43 and the return spring rod 44, the purpose of processing the rare earth raw materials and conveying the flue gas is achieved, the processing efficiency of rare earth metals is improved, the sealing degree of the device is improved, the safety of the device is improved, and the durability of the device is enhanced.

[0043] Working principle: The waste heat recovery tank 10 is placed on the ground as the main structure of the entire waste heat recovery system. The turntable 34 is arranged inside the waste heat recovery tank 10 and is in the shape of a disc. The filter plate 17 is located in the hole of the fixed frame plate 16 and is used to filter impurities in the flue gas. The cleaning brush plate 35 is fixed on one side of the turntable 34. When the turntable rotates, the filter plate is cleaned and scraped by the cleaning brush plate to prevent blockage. A group of holes are opened inside the partition 15 to guide the flue gas into the first heat absorption pipe 45. The first heat absorption pipe 45 is arranged inside the waste heat recovery tank 10, one end of which is connected to the hole of the partition 15, and the other end is connected to the exhaust pipe 13 to absorb the heat of the flue gas. The stirring plate 23 is driven by the first servo motor 19 to stir and mix the water in the waste heat recovery tank to improve the water heating efficiency. The transmission system consists of a first pulley 25 and a second pulley 26 and a transmission belt 27. When the first rotating rod 20 rotates, the third rotating rod 24 is driven to rotate through the transmission system, and then the turntable 34 is driven to rotate through the meshing of the first circular bevel gear 29 and the second circular bevel gear 31, so as to realize the automatic operation of the cleaning structure. The electrolytic furnace body 37, as the main container for rare earth metal electrolysis, drives internal stirring or other electrolysis operations through the second servo motor 40 to control the electrical system of the rare earth metal electrolytic furnace, including the start and stop of the second servo motor 40. The second sealing cover plate 39 is used to seal the processing tank 37 to ensure that the electrolysis process is carried out in a closed environment. The first hydraulic cylinder 42 and the first hydraulic push rod 43 control the lifting and lowering of the second sealing cover plate through the hydraulic system, which is convenient for feeding and removing the electrolysis product. The damper and the return spring rod 44 assist in the lifting and lowering of the sealing cover plate and provide a certain buffering effect.

[0044] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A waste heat recovery device, characterized in that: include: A waste heat recovery tank (10), wherein the waste heat recovery tank (10) is placed on the ground; A cleaning structure, the cleaning structure comprising a rotating disk (34), the rotating disk (34) being arranged inside the waste heat recovery tank (10), and the rotating disk (34) being in the shape of a disk; A waste heat recovery structure, the waste heat recovery structure comprising a first heat absorption pipe (45), the first heat absorption pipe (45) being arranged inside the waste heat recovery tank (10); A first fixing plate (18) is fixedly mounted on the top of the waste heat recovery tank (10).

2. The waste heat recovery device according to claim 1, characterized in that: The cleaning structure also includes a fixed frame plate (16) fixedly mounted inside the waste heat recovery tank (10), a hole being provided inside the fixed frame plate (16), a filter hole plate (17) being fixedly mounted inside the hole, a cleaning brush plate (35) being fixedly mounted on an outer wall of one side of the rotating disk (34), and an outer wall of the cleaning brush plate (35) being in close contact with an outer wall of the filter hole plate (17).

3. The waste heat recovery device according to claim 1, characterized in that: The waste heat recovery structure also includes a partition (15) fixedly mounted inside the waste heat recovery tank (10), a group of holes being opened inside the partition (15), one end of the first heat absorption pipe (45) being fixedly mounted inside the holes inside the partition (15), an air outlet pipe (13) being fixedly mounted on the top of the waste heat recovery tank (10), the other end of the first heat absorption pipe (45) being fixedly mounted inside the air outlet pipe (13), a first sealing cover plate (11) being fixedly mounted on the front side of the waste heat recovery tank (10), and a water pipe (12) being fixedly mounted inside the first sealing cover plate (11).

4. The waste heat recovery device according to claim 1, characterized in that: The waste heat recovery structure further comprises a first servo motor (19) fixedly mounted on the top of the first fixed plate (18); a first rotating rod (20) is rotatably mounted on the bottom of the first fixed plate (18); an output shaft of the first servo motor (19) is fixedly connected to one end of the first rotating rod (20) via a coupling; a second rotating rod (21) is rotatably mounted inside the waste heat recovery tank (10); one end of the first rotating rod (20) extends and is fixedly connected to one end of the second rotating rod (21); a fixed sleeve (22) is fixedly mounted on the outer wall of the second rotating rod (21); and twelve groups of stirring plates (23) are fixedly mounted on the outer wall of the fixed sleeve (22).

5. The waste heat recovery device according to claim 4, characterized in that: A first pulley (25) is fixedly mounted on the outer wall of the first rotating rod (20); a hole is provided on the top of the waste heat recovery tank (10), in which a third rotating rod (24) is rotatably mounted; a second pulley (26) is fixedly mounted on the outer wall of the third rotating rod (24); a transmission belt (27) is sleeved and mounted between the first pulley (25) and the second pulley (26); one end of the third rotating rod (24) extends to the interior of the waste heat recovery tank (10); a limiting ring plate (28) is fixedly mounted on the inner wall of one side of the waste heat recovery tank (10); the third rotating rod (24) is rotatably mounted inside the limiting ring plate (28); and a first circular bevel gear (29) is fixedly mounted on one end of the third rotating rod (24).

6. The waste heat recovery device according to claim 1, characterized in that: A fixed ring plate (30) is fixedly mounted on the inner wall of one side of the waste heat recovery tank (10), a fourth rotating rod (32) is rotatably mounted inside the fixed ring plate (30), a second circular bevel gear (31) is fixedly mounted on the outer wall of the fourth rotating rod (32), a fifth rotating rod (33) is fixedly mounted on one end of the fourth rotating rod (32), the fifth rotating rod (33) is fixedly mounted inside the rotating disk (34), the first circular bevel gear (29) is meshed with the second circular bevel gear (31), and a hole is opened on the outer wall of one side of the waste heat recovery tank (10), and a first flue gas pipe (14) is fixedly mounted in the hole.

7. A rare earth metal electrolysis furnace, characterized in that: The invention comprises a waste heat recovery device and an electrolytic furnace body (37) as described in any one of claims 1 to 6, wherein a second fixing plate (36) is fixedly mounted on an outer wall of one side of the electrolytic furnace body (37), an electric control box (38) is fixedly mounted on an outer wall of one side of the second fixing plate (36), a second sealing cover plate (39) is clamped and mounted on the top of the electrolytic furnace body (37), a second servo motor (40) is fixedly mounted on the top of the second sealing cover plate (39), a first hydraulic cylinder (42) is fixedly mounted on the top of the second fixing plate (36), a first hydraulic push rod (43) is fixedly mounted on the bottom of the second fixing plate (36), an output end of the first hydraulic cylinder (42) is connected to the first hydraulic push rod (43), and a second servo motor (40) is fixedly mounted on the top of the second fixing plate (36). 3), a third fixed plate (41) is fixedly installed on the top of the second sealing cover plate (39), the other end of the first hydraulic push rod (43) is fixedly connected to the top of the third fixed plate (41), two groups of dampers are arranged between the second fixed plate (36) and the third fixed plate (41), a return spring rod (44) is fixedly installed on the top of the damper, one end of the return spring rod (44) is fixedly connected to the top of the third fixed plate (41), a stirring rod is rotatably installed on the bottom of the second sealing cover plate (39), the output shaft of the second servo motor (40) is fixedly connected to one end of the stirring rod through a coupling, and the electrolytic furnace body (37) is electrically connected to the electric control box (38).

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