A rare earth oxide burning device

Abstract

The present invention relates to the field of rare earth technology and discloses a rare earth oxide calcining device, comprising a calcining tank, wherein a driving mechanism is arranged in the calcining tank, wherein the driving mechanism comprises a heavy roller and a driving shaft, and wherein an auger conveying mechanism is arranged on the heavy roller, and wherein the auger conveying mechanism comprises a conical driving gear, a driven shaft, a first conical driven gear and a spiral blade, wherein the conical driving gear is sleeved on the driving shaft, and the driven shaft is rotatably engaged with the heavy roller, and the first conical driven gear is sleeved on the driven shaft, and the first conical driven gear is meshed with the conical driving gear, and the conical driving gear drives the first stirring mechanism to rotate, and the cross bar is converted from a state of cutting into rare earth precipitates to a state of obstructing the precipitates, thereby increasing the contact area with the rare earth precipitates and improving the stirring effect, whereas adjacent spiral blades are fitted together to form an auger conveying mechanism to convey the calcined rare earth precipitates.

Description

Technical Field

[0001] The present invention relates to the field of rare earth technology, in particular to rare earth oxide burning equipment. Background Art

[0002] Rare earth elements are a collective term for 17 metallic elements in the periodic table, including the lanthanides, scandium, and yttrium. There are 250 rare earth minerals found in nature. The Finnish chemist Gadolin first discovered rare earth elements in 1794, isolating them from a heavy ore resembling asphalt. Because rare earth minerals were relatively rare in the 18th century, only small amounts of insoluble oxides could be produced chemically. Historically, these oxides were often referred to as "earths," hence the name rare earth.

[0003] Chinese patent CN109868377B discloses a rare earth precipitate calcining device. The technical problem addressed by this patent is to provide a rare earth precipitate calcining device that conserves energy, achieves sufficient calcination, is simple to operate, and saves manpower and material resources. To address the aforementioned technical problems, the patent provides a rare earth precipitate calcining device comprising a first drive motor, a transmission shaft, a stirring paddle, a preheating and water removal mechanism, a feed pipe, a fine-tuning drive mechanism, a support post, a hydraulic cylinder, a crushing mechanism, a calcining body, and a discharge gate. The bottom side of the calcining body is hingedly connected to a hydraulic cylinder, the bottom of which is hingedly connected to the ground. The side of the calcining body away from the hydraulic cylinder is fixedly connected to a fine-tuning drive mechanism, the bottom of which is hingedly connected to a support post. This patent achieves the effects of saving energy, sufficient burning, simple operation, saving manpower and material resources, good crushing effect and easy removal of the rare earth precipitate after burning. After use, the device needs to be tilted at a certain angle and use gravity to make the rare earth precipitate after burning automatically pour out, but this method is likely to cause unclean discharge, and when preheating the rare earth precipitate, it is easy to cause the rare earth precipitate to stick to the wall and insufficient preheating. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a rare earth oxide burning device with the advantages of good discharge and preheating effects. It solves the problem that the device needs to be tilted at a certain angle after use and use gravity to automatically pour out the rare earth precipitate after burning. However, this method easily causes unclean discharge and easily causes the rare earth precipitate to stick to the wall when preheating the rare earth precipitate, resulting in insufficient preheating.

[0006] (2) Technical solution

[0007] In order to solve the technical problem that the above-mentioned device needs to be tilted at a certain angle after use and gravity is used to automatically pour out the rare earth precipitate after calcination, but this method easily causes unclean discharge and easily causes the rare earth precipitate to stick to the wall and insufficient preheating when preheating the rare earth precipitate, the present invention provides the following technical solution: A rare earth oxide calcining device includes a calcining tank, a driving mechanism is provided in the calcining tank, the driving mechanism includes a heavy roller and a driving shaft, the heavy roller is provided with an auger conveying mechanism, the auger conveying mechanism includes a conical drive gear, a driven shaft, a first conical driven gear and a spiral blade, the conical drive gear is sleeved on the drive shaft, the driven shaft is rotatably engaged with the heavy roller, the first conical driven gear is sleeved on the driven shaft, and the first conical driven gear is meshed with the conical drive gear, the spiral blade is provided on one end of the driven shaft located outside the heavy roller, and the heavy roller is provided with a first stirring mechanism, the first stirring mechanism is used to stir the rare earth precipitate to prevent agglomeration.

[0008] Preferably, the auger conveying mechanism and the first stirring mechanism have two-stage modes. The first stage mode is the stirring mode. When the driving mechanism rotates forward, the driving shaft drives the conical driving gear to rotate, and the conical driving gear drives the first conical driven gear to drive the driven shaft to drive the spiral blades to deflect so that adjacent spiral blades move away from each other. At the same time, the conical driving gear drives the first stirring mechanism to rotate, and the state of cutting into rare earth precipitates is converted into a state of obstructing precipitates. After the driving shaft rotates to the set position, it drives the heavy roller, spiral blades and the first stirring mechanism to rotate simultaneously. When rotating synchronously, the spiral blades and the first stirring mechanism stop deflecting; the second stage mode is the conveying mode. When the driving mechanism is reversed, the first stirring mechanism is driven to deflect and cut into the rare earth precipitates. At the same time, the adjacent spiral blades are fitted together, and the driving shaft drives the heavy roller to drive the spiral blades and the first stirring mechanism to rotate synchronously.

[0009] Preferably, the heavy roller is rotatably fitted in the calcination tank, the drive shaft is rotatably fitted in the heavy roller, and one end of the drive shaft extends to the outside of the calcination tank, the first stirring mechanism includes a stirring shaft and a second conical driven gear, the stirring shaft is rotatably fitted on the heavy roller, and one end of the stirring shaft extends into the heavy roller, the second conical driven gear is sleeved on the end of the stirring shaft located in the heavy roller, and the second conical driven gear is meshed with the conical drive gear, and a cross bar is provided on the stirring shaft; during stirring, the driving mechanism drives the conical drive gear to drive the second conical driven gear to rotate, and the second conical driven gear drives the cross bar through the stirring shaft from a state of cutting into rare earth precipitates to a state of blocking precipitates; conversely, during discharging, the cross bar is converted from a state of blocking rare earth precipitates to a state of cutting into precipitates.

[0010] Preferably, a mounting seat is provided on the outer wall of the burning pot, a spiral tube is provided on the mounting seat, and the bottom end of the spiral tube extends into the burning pot, and the spiral tube is communicated with the burning pot.

[0011] Preferably, the driving mechanism includes a driving motor, a fixed shaft and two groups of obstruction shafts. A mounting plate is provided on one side of the burning tank, the driving motor is provided on the top of the mounting plate, the fixed shaft is provided on the outer wall of the driving shaft, the two groups of obstruction shafts are provided on one end of the heavy roller, and the two groups of obstruction shafts are distributed on both sides of the fixed shaft; starting the driving motor drives the driving shaft to drive the fixed shaft to rotate, and after the fixed shaft rotates forward and reverse and contacts the two groups of obstruction shafts, the heavy roller is driven to rotate forward and reverse.

[0012] Preferably, a feed pipe is provided on the top of the sintering tank, the bottom end of the feed pipe extends into the inside of the sintering tank, a preheating barrel is provided on the top of the feed pipe, the preheating barrel is connected to the feed pipe, and the preheating barrel is provided in the spiral tube, and a first electric control valve is provided on one side of the feed pipe.

[0013] Preferably, a second stirring mechanism is provided in the preheating barrel, and the second stirring mechanism includes a fixed plate, a spiral stirring shaft, a scraper, a first bevel gear, a rotating shaft, a second bevel gear, a driven pulley, a driving pulley and a belt. The fixed plate is arranged in the preheating barrel, and the spiral stirring shaft is rotatably fitted on the fixed plate. The scraper is arranged on the spiral stirring shaft, and the scraper is in contact with the inner wall of the preheating barrel. The first bevel gear is arranged at the top end of the spiral stirring shaft, and the rotating shaft is rotatably fitted on the top of the preheating barrel. The second bevel gear is sleeved on the rotating shaft, and the second bevel gear is meshed with the first bevel gear. The driven pulley is arranged on one end of the rotating shaft, the driving pulley is sleeved on the drive shaft, and the belt is sleeved on the driving pulley and the driven pulley.

[0014] Preferably, a discharge pipe is provided on the outer wall of the burning pot, the discharge pipe is communicated with the burning pot, and a second electric control valve is provided on one side outer wall of the discharge pipe.

[0015] Preferably, U-shaped mounting frames are provided on both sides of the burning pot, and two sets of universal wheels are provided at the bottom of the two sets of U-shaped mounting frames, and the four sets of universal wheels are distributed in a rectangular shape.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a rare earth oxide burning device with the following beneficial effects:

[0018] 1. The rare earth oxide burning equipment, when stirring, starts the driving motor in the forward direction to drive the spiral blade to deflect, wherein the driving shaft drives the fixed shaft to rotate, when the fixed shaft is not in contact with the obstruction shaft, the driving shaft can move relative to the weight roller under the weight of the weight roller itself, at this time the driving shaft drives the auger conveying mechanism to deflect and the first stirring mechanism to deflect from the state of cutting into the rare earth precipitate to the state of obstructing the precipitate, when the fixed shaft contacts the obstruction shaft, the auger conveying mechanism and the first stirring mechanism stop rotating; on the contrary, when discharging, the second electric control valve is opened, and the reverse driving mechanism drives the first stirring mechanism to rotate. The mechanism deflects and cuts into the rare earth precipitate, thereby reducing the contact area with the burnt rare earth precipitate and reducing the loss of kinetic energy. While the adjacent spiral blades are in contact, the drive shaft drives the heavy roller to drive the spiral blades and the first stirring mechanism to rotate synchronously. After the adjacent spiral blades are in contact, an auger conveyor is formed to transport the burnt rare earth precipitate. The cross bar is converted from a state of cutting into the rare earth precipitate to a state of obstructing the precipitate, thereby increasing the contact area with the rare earth precipitate material and improving the stirring effect. Conversely, after the adjacent spiral blades are in contact, an auger conveyor is formed to transport the burnt rare earth precipitate.

[0019] 2. The rare earth oxide burning equipment can heat the spiral tube through the high-temperature gas in the flask to achieve preheating of the preheating barrel. The driving motor drives the active pulley to rotate through the belt, and the driven pulley drives the rotating shaft to drive the second bevel gear to drive the first bevel gear to rotate. The first bevel gear drives the spiral stirring shaft to rotate. At the same time, the spiral stirring shaft stirs the rare earth precipitate, thereby improving the preheating effect.

[0020] 3. The rare earth oxide burning equipment drives the driving pulley through the belt by the driving motor to rotate the driven pulley, the driven pulley drives the rotating shaft to drive the second bevel gear to drive the first bevel gear to rotate, the first bevel gear drives the spiral stirring shaft to drive the rotating scraper to make a circular motion along the inner wall of the preheating barrel, thereby effectively avoiding the wall sticking phenomenon that affects the next preheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A local enlarged structural diagram of point A;

[0024] Figure 4 This is one of the partial three-dimensional structural diagrams of the present invention;

[0025] Figure 5 For the present invention Figure 4A schematic diagram of the partially enlarged structure at point B;

[0026] Figure 6 This is the second schematic diagram of a partial three-dimensional structure of the present invention;

[0027] Figure 7 This is the third schematic diagram of a partial three-dimensional structure of the present invention;

[0028] Figure 8 This is the fourth schematic diagram of the partial three-dimensional structure of the present invention.

[0029] In the figure: 1. burning pot; 11. mounting base; 12. spiral tube; 13. mounting plate; 14. feed pipe; 15. preheating barrel; 16. first electric control valve; 17. discharge pipe; 18. second electric control valve; 19. U-shaped mounting frame; 2. driving mechanism; 21. heavy roller; 22. driving shaft; 23. driving motor; 24. fixed shaft; 25. obstruction shaft; 3. auger conveying mechanism; 31. conical driving gear; 32. driven shaft; 33. first conical driven gear; 34. spiral blade; 4. first stirring mechanism; 41. stirring shaft; 42. second conical driven gear; 43. cross bar; 5. second stirring mechanism; 51. fixed plate; 52. spiral stirring shaft; 53. scraper; 54. first conical gear; 55. rotating shaft; 56. second conical gear; 57. driven pulley; 58. driving pulley; 59. belt. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0031] See also Figures 1-8 , a rare earth oxide calcining equipment, including a calcining tank 1, a driving mechanism 2 is provided in the calcining tank 1, the driving mechanism 2 includes a heavy roller 21 and a driving shaft 22, the heavy roller 21 is provided with an auger conveying mechanism 3, the auger conveying mechanism 3 includes a conical driving gear 31, a driven shaft 32, a first conical driven gear 33 and a spiral blade 34, the conical driving gear 31 is sleeved on the driving shaft 22, the driven shaft 32 is rotatably fitted on the heavy roller 21, the first conical driven gear 33 is sleeved on the driven shaft 32, and the first conical driven gear 33 is meshed with the conical driving gear 31, the spiral blade 34 is provided on one end of the driven shaft 32 located outside the heavy roller 21, and the heavy roller 21 is provided with a first stirring mechanism 4, the first stirring mechanism 4 is used to stir the rare earth precipitate to prevent agglomeration;

[0032] Furthermore, the auger conveying mechanism 3 and the first stirring mechanism 4 have two-stage modes. The first stage mode is the stirring mode. When the driving mechanism 2 rotates forward, the driving shaft 22 is driven to drive the conical driving gear 31 to rotate. The conical driving gear 31 drives the first conical driven gear 33 to drive the driven shaft 32 to drive the spiral blades 34 to deflect so that the adjacent spiral blades 34 move away from each other. At the same time, the conical driving gear 31 drives the first stirring mechanism 4 to rotate, and the state of cutting into the rare earth precipitate is converted into the state of obstructing the precipitate. After the driving shaft 22 rotates to the set position, it drives the heavy roller 21, the spiral blades 34 and the first stirring mechanism 4 to rotate simultaneously. When rotating synchronously, the spiral blades 34 and the first stirring mechanism 4 stop deflecting; the second stage mode is the conveying mode. When the driving mechanism 2 is reversed, the first stirring mechanism 4 is driven to deflect and cut into the rare earth precipitate. While the adjacent spiral blades 34 are in contact, the driving shaft 22 drives the heavy roller 21 to drive the spiral blades 34 and the first stirring mechanism 4 to rotate synchronously.

[0033] During stirring, the driving mechanism 2 is started in the forward direction to drive the driving shaft 22 to drive the bevel driving gear 31 to rotate, and the bevel driving gear 31 drives the first bevel driven gear 33 to drive the driven shaft 32 to drive the spiral blade 34 to deflect to the set position, thereby making the adjacent spiral blades 34 move away from each other, forming a gap of a certain width between them, so that it does not have a feeding function. At the same time, the bevel driving gear 31 drives the first stirring mechanism 4 to rotate, and changes from a state of cutting into the rare earth precipitate to a state of obstructing the precipitate, thereby increasing the contact area with the rare earth precipitate and improving the stirring effect. After the driving shaft 22 rotates to the set position, it can drive the heavy roller 21, the spiral blade 34 and the first stirring mechanism 4 to rotate simultaneously. When rotating synchronously, the spiral blade 34 and the first stirring mechanism 4 stop deflecting to achieve the stirring effect;

[0034] On the contrary, when discharging, the reverse drive mechanism 2 drives the first stirring mechanism 4 to deflect and cut into the rare earth precipitate, thereby reducing the contact area with the burnt rare earth precipitate and reducing the loss of kinetic energy. While the adjacent spiral blades 34 are in contact, the drive shaft 22 drives the heavy roller 21 to drive the spiral blades 34 and the first stirring mechanism 4 to rotate synchronously. After the adjacent spiral blades 34 are in contact, an auger conveyor is formed to transport the burnt rare earth precipitate.

[0035] Furthermore, the heavy roller 21 is rotatably fitted in the burning tank 1, the drive shaft 22 is rotatably fitted in the heavy roller 21, and one end of the drive shaft 22 extends to the outside of the burning tank 1, the first stirring mechanism 4 includes a stirring shaft 41 and a second conical driven gear 42, the stirring shaft 41 is rotatably fitted on the heavy roller 21, and one end of the stirring shaft 41 extends into the heavy roller 21, the second conical driven gear 42 is sleeved on one end of the stirring shaft 41 located in the heavy roller 21, and the second conical driven gear 42 is meshed with the conical drive gear 31, and a transverse gear is provided on the stirring shaft 41. Rod 43; during stirring, the driving mechanism 2 drives the conical driving gear 31 to drive the second conical driven gear 42 to rotate, and the second conical driven gear 42 drives the cross bar 43 through the stirring shaft 41 to change from the state of cutting into the rare earth precipitate to the state of blocking the precipitate; conversely, during discharging, the cross bar 43 is converted from the state of blocking the rare earth precipitate to the state of cutting into the precipitate; wherein the two states of the cross bar 43, the state of blocking the rare earth precipitate and the state of cutting into the precipitate, respectively correspond to increasing the contact area with the rare earth precipitate and reducing the contact area with the rare earth precipitate, thereby reducing kinetic energy loss.

[0036] Furthermore, a mounting seat 11 is provided on the outer wall of the burning tank 1, on which a spiral tube 12 is installed, and the bottom end of the spiral tube 12 extends into the burning tank 1, and the spiral tube 12 is connected to the burning tank 1; when in use, the high-temperature gas in the burning tank 1 can enter the spiral tube 12 to heat the spiral tube 12.

[0037] Furthermore, the driving mechanism 2 includes a driving motor 23, a fixed shaft 24 and two sets of blocking shafts 25. A mounting plate 13 is provided on one side of the burning pot 1. The driving motor 23 is provided on the top of the mounting plate 13. The fixed shaft 24 is provided on the outer wall of the driving shaft 22. The two sets of blocking shafts 25 are provided on one end of the heavy roller 21, and the two sets of blocking shafts 25 are distributed on both sides of the fixed shaft 24. When the driving motor 23 is started, the driving shaft 22 drives the fixed shaft 24 to rotate. The fixed shaft 24 rotates forward and backward to connect with the two sets of blocking shafts 25. After the contact, the heavy roller 21 is driven to rotate forward and backward; the driving shaft 22 drives the fixed shaft 24 to rotate. When the fixed shaft 24 is not in contact with the obstruction shaft 25, the driving shaft 22 can move relative to the heavy roller 21 under the gravity of the heavy roller 21 itself. At this time, the driving shaft 22 can drive the auger conveying mechanism 3 and the first stirring mechanism 4 to deflect through the conical driving gear 31. When the fixed shaft 24 contacts the obstruction shaft 25, the driving shaft 22 moves synchronously with the obstruction shaft 25, and the auger conveying mechanism 3 and the first stirring mechanism 4 stop rotating.

[0038] Furthermore, a feed pipe 14 is provided on the top of the calcination tank 1, and the bottom end of the feed pipe 14 extends into the inside of the calcination tank 1. A preheating barrel 15 is provided on the top of the feed pipe 14. The preheating barrel 15 is connected to the feed pipe 14, and the preheating barrel 15 is arranged in the spiral tube 12. A first electric control valve 16 is provided on one side of the feed pipe 14; when in use, rare earth precipitates can be added into the preheating barrel 15, and the rare earth precipitates in the preheating barrel 15 can be preheated under the heating action of the spiral tube 12.

[0039] Furthermore, a second stirring mechanism 5 is provided in the preheating barrel 15, and the second stirring mechanism 5 includes a fixed plate 51, a spiral stirring shaft 52, a scraper 53, a first bevel gear 54, a rotating shaft 55, a second bevel gear 56, a driven pulley 57, a driving pulley 58 and a belt 59. The fixed plate 51 is provided in the preheating barrel 15, and the spiral stirring shaft 52 is rotatably fitted on the fixed plate 51. The scraper 53 is provided on the spiral stirring shaft 52, and the scraper 53 is fitted with the inner wall of the preheating barrel 15. The first bevel gear 54 is provided at the top end of the spiral stirring shaft 52, and the rotating shaft 55 is rotatably fitted on the top end of the preheating barrel 15. The second bevel gear 56 is sleeved on the rotating shaft 55, and the second bevel gear 56 is meshed with the first bevel gear 54. The driven pulley 57 is set on one end of the rotating shaft 55, the driving pulley 58 is sleeved on the driving shaft 22, and the belt 59 is sleeved on the driving pulley 58 and the driven pulley 57; the driving motor 23 is started to drive the driving pulley 58 to rotate through the belt 59, and the driven pulley 57 drives the rotating shaft 55 to drive the second bevel gear 56 to drive the first bevel gear 54 to rotate, and the first bevel gear 54 drives the spiral stirring shaft 52 to rotate, and at the same time, the spiral stirring shaft 52 drives the scraper 53 to rotate; wherein the driving motor 23 can synchronously drive the spiral stirring shaft 52 to stir the rare earth precipitate when rotating forward and reverse, thereby improving the preheating effect. At the same time, the scraper 53 can make a circular motion along the inner wall of the preheating barrel 15, thereby effectively avoiding the wall sticking phenomenon that affects the next preheating.

[0040] Furthermore, a discharge pipe 17 is provided on the outer wall of the calcination tank 1 , the discharge pipe 17 is communicated with the calcination tank 1 , and a second electric control valve 18 is provided on one side of the outer wall of the discharge pipe 17 .

[0041] Furthermore, U-shaped mounting frames 19 are provided on both sides of the burning pot 1, and two sets of universal wheels are provided at the bottom of the two sets of U-shaped mounting frames 19, and the four sets of universal wheels are distributed in a rectangular shape.

[0042] Working principle: When in use, the high-temperature gas in the calcination tank 1 can enter the spiral tube 12 to heat the spiral tube 12, and then the rare earth precipitate is added to the preheating barrel 15. Under the heating effect of the spiral tube 12, the rare earth precipitate in the preheating barrel 15 can be preheated. After the preheating is completed, the first electric control valve 16 is opened, and the rare earth precipitate can enter the calcination tank 1 from the feeding pipe 14;

[0043] During stirring, the drive motor 23 is started in the forward direction to drive the drive shaft 22 to drive the conical drive gear 31 to rotate, and the conical drive gear 31 drives the first conical driven gear 33 to drive the driven shaft 32 to drive the spiral blade 34 to deflect to the set position, wherein the drive shaft 22 drives the fixed shaft 24 to rotate. When the fixed shaft 24 is not in contact with the obstruction shaft 25, the drive shaft 22 can move relative to the heavy roller 21 under the gravity of the heavy roller 21 itself. At this time, the drive shaft 22 can drive the auger conveying mechanism 3 and the second conical driven gear 42 to rotate through the conical drive gear 31. The second conical driven gear 42 drives the cross bar 43 through the stirring shaft 41 to change from a state of cutting into rare earth precipitates to a state of obstructing precipitates and deflect. When the fixed shaft 24 contacts the obstruction shaft 25, the drive shaft 22 moves synchronously with the obstruction shaft 25, and the auger conveying mechanism 3 and the first stirring mechanism 4 stop rotating;

[0044] On the contrary, when discharging, the second electric control valve 18 is opened, and the reverse driving mechanism 2 drives the first stirring mechanism 4 to deflect and cut into the rare earth precipitate, thereby reducing the contact area with the incinerated rare earth precipitate and reducing the loss of kinetic energy. At the same time, when the adjacent spiral blades 34 are in contact, the driving shaft 22 drives the heavy roller 21 to drive the spiral blades 34 and the first stirring mechanism 4 to rotate synchronously. After the adjacent spiral blades 34 are in contact, an auger conveyor is formed to transport the incinerated rare earth precipitate.

[0045] At the same time, the driving motor 23 drives the driving pulley 58 to rotate through the belt 59, and the driven pulley 57 drives the rotating shaft 55 to drive the second bevel gear 56 to drive the first bevel gear 54 to rotate. The first bevel gear 54 drives the spiral stirring shaft 52 to rotate. At the same time, the spiral stirring shaft 52 drives the scraper 53 to rotate to stir the rare earth precipitate, thereby improving the preheating effect. The scraper 53 can make a circular motion along the inner wall of the preheating barrel 15, thereby effectively avoiding the wall sticking phenomenon that affects the next preheating.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rare earth oxide burning device, comprising a burning tank (1), characterized in that: A driving mechanism (2) is provided in the burning pot (1), the driving mechanism (2) comprising a heavy roller (21) and a driving shaft (22), an auger conveying mechanism (3) is provided on the heavy roller (21), the auger conveying mechanism (3) comprising a conical driving gear (31), a driven shaft (32), a first conical driven gear (33) and a spiral blade (34), the conical driving gear (31) being sleeved on the driving shaft (22), the driven shaft (32) being rotatably engaged with the heavy roller (21), the first conical driven gear (33) being sleeved on the driven shaft (32), and the first conical driven gear (33) being meshed with the conical driving gear (31), the spiral blade (34) being provided on one end of the driven shaft (32) located outside the heavy roller (21), and a first stirring mechanism (4) being provided on the heavy roller (21), the first stirring mechanism (4) being used to stir the rare earth precipitate to prevent agglomeration; The auger conveying mechanism (3) and the first stirring mechanism (4) have two-stage modes. The first stage mode is a stirring mode. When the driving mechanism (2) rotates forward, the driving shaft (22) drives the conical driving gear (31) to rotate. The conical driving gear (31) drives the first conical driven gear (33) to drive the driven shaft (32) to drive the spiral blades (34) to deflect so that adjacent spiral blades (34) are separated from each other. At the same time, the conical driving gear (31) drives the first stirring mechanism (4) to rotate, and the state of cutting into the rare earth precipitate is converted into the state of blocking the precipitate. After the driving shaft (22) rotates to the set position, it drives the heavy roller (21), the spiral blades (34) and the first stirring mechanism (4) to rotate simultaneously. When rotating synchronously, the spiral blades (34) and the first stirring mechanism (4) stop deflecting. The second-stage mode is a conveying mode, in which the driving mechanism (2) is reversed to drive the first stirring mechanism (4) to deflect and cut into the rare earth precipitate, and the adjacent spiral blades (34) are abutted while the driving shaft (22) drives the heavy roller (21) to drive the spiral blades (34) and the first stirring mechanism (4) to rotate synchronously; The driving mechanism (2) comprises a driving motor (23), a fixed shaft (24) and two groups of obstructing shafts (25); a mounting plate (13) is provided on one side of the burning pot (1); the driving motor (23) is provided on the top of the mounting plate (13); the fixed shaft (24) is provided on the outer wall of the driving shaft (22); the two groups of obstructing shafts (25) are provided on one end of the heavy roller (21), and the two groups of obstructing shafts (25) are distributed on both sides of the fixed shaft (24); the driving motor (23) is started to drive the driving shaft (22) to drive the fixed shaft (24) to rotate; after the fixed shaft (24) rotates forward and reverse and contacts the two groups of obstructing shafts (25), the heavy roller (21) is driven to rotate forward and reverse.

2. A rare earth oxide burning device according to claim 1, characterized in that: The heavy roller (21) is rotatably fitted in the burning pot (1), the driving shaft (22) is rotatably fitted in the heavy roller (21), and one end of the driving shaft (22) extends to the outside of the burning pot (1), the first stirring mechanism (4) comprises a stirring shaft (41) and a second conical driven gear (42), the stirring shaft (41) is rotatably fitted on the heavy roller (21), and one end of the stirring shaft (41) extends into the heavy roller (21), the second conical driven gear (42) is sleeved on the stirring shaft (41) at the position where the stirring shaft (41) is located. On one end of the weight roller (21), the second conical driven gear (42) is meshed with the conical drive gear (31), and a cross bar (43) is provided on the stirring shaft (41); during stirring, the driving mechanism (2) drives the conical drive gear (31) to drive the second conical driven gear (42) to rotate, and the second conical driven gear (42) drives the cross bar (43) through the stirring shaft (41) to change from a state of cutting into rare earth precipitates to a state of blocking precipitates; conversely, during discharging, the cross bar (43) changes from a state of blocking rare earth precipitates to a state of cutting into precipitates.

3. A rare earth oxide burning device according to claim 1, characterized in that: The outer wall of the burning pot (1) is provided with a mounting seat (11), the mounting seat is provided with a spiral tube (12), and the bottom end of the spiral tube (12) extends into the burning pot (1), and the spiral tube (12) is connected to the burning pot (1).

4. A rare earth oxide burning device according to claim 3, characterized in that: A feed pipe (14) is provided on the top of the sintering tank (1), the bottom end of the feed pipe (14) extends into the interior of the sintering tank (1), a preheating barrel (15) is provided on the top end of the feed pipe (14), the preheating barrel (15) is connected to the feed pipe (14), and the preheating barrel (15) is arranged in the spiral tube (12), and a first electric control valve (16) is provided on one side of the feed pipe (14).

5. A rare earth oxide burning device according to claim 4, characterized in that: A second stirring mechanism (5) is provided in the preheating barrel (15), and the second stirring mechanism (5) includes a fixed plate (51), a spiral stirring shaft (52), a scraper (53), a first bevel gear (54), a rotating shaft (55), a second bevel gear (56), a driven pulley (57), a driving pulley (58) and a belt (59). The fixed plate (51) is provided in the preheating barrel (15), the spiral stirring shaft (52) is rotatably engaged with the fixed plate (51), the scraper (53) is provided on the spiral stirring shaft (52), and the scraper (53) is connected to the preheating barrel (15). 5), the first bevel gear (54) is arranged on the top end of the spiral stirring shaft (52), the rotating shaft (55) is rotatably fitted on the top of the preheating barrel (15), the second bevel gear (56) is sleeved on the rotating shaft (55), and the second bevel gear (56) is meshed with the first bevel gear (54), the driven pulley (57) is arranged on one end of the rotating shaft (55), the driving pulley (58) is sleeved on the driving shaft (22), and the belt (59) is sleeved on the driving pulley (58) and the driven pulley (57).

6. The rare earth oxide burning device according to claim 1, characterized in that: A discharge pipe (17) is provided on the outer wall of the burning pot (1), the discharge pipe (17) is connected to the burning pot (1), and a second electric control valve (18) is provided on one side outer wall of the discharge pipe (17).

7. The rare earth oxide burning device according to claim 1, characterized in that: Both sides of the burning pot (1) are provided with U-shaped mounting frames (19), and the bottoms of the two sets of U-shaped mounting frames (19) are provided with two sets of universal wheels, and the four sets of universal wheels are distributed in a rectangular shape.

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