A drying device for a cryolite production line

Abstract

The application belongs to the technical field of drying processing, in particular to a drying device for an ice crystal production line, which comprises a butt joint component, left and right sides of the butt joint component are symmetrically provided with traction components, a drying component is arranged on one side of the top of the traction component close to the butt joint component, and a pressurizing component is arranged on the other side of the top of the traction component away from the butt joint component; the pressurizing component comprises an outer rotating cylinder shell, and an oil tank is fixedly connected to the shaft center of the inner cavity of the outer rotating cylinder shell. The device can simultaneously spray fire from the inside and outside of the mesh baffle through the inner flame spray head and the ignition lance, uniformly heat the ice crystal inside and outside of the mesh baffle, and avoid the problems of uneven heating of the ice crystal and over-drying of the ice crystal, thereby avoiding the problem of burning of the ice crystal.

Description

Technical Field

[0001] This invention belongs to the field of drying and processing technology, specifically a drying device for cryolite production lines. Background Technology

[0002] Cryolite, chemically known as sodium fluoroaluminate, is mainly used industrially as a flux in electrolytic aluminum smelting, a wear-resistant filler for rubber and grinding wheels, a whitening agent for enamel, and a flux for metals. Its primary industrial use is as a combustion aid during aluminum electrolysis. Naturally occurring cryolite is rare; therefore, most modern cryolite is artificially synthesized. During cryolite production, drying is necessary to prevent it from becoming slightly soluble in water.

[0003] Because cryolite is not afraid of high temperatures, it is dried by direct baking with an open flame. The key to the drying process is to ensure that the cryolite fully contacts all the heat energy. Existing drum-type cryolite dryers usually spray flames from the axis of the drum to the inner wall of the drum to dry the cryolite adhering to the drum wall. However, this will cause uneven heating of the cryolite. It is necessary to constantly stir the cryolite and control the flame to prevent the cryolite from being over-dried and scorched. Therefore, improvements are needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention to solve its technical problems is: a drying device for a cryolite production line, comprising a docking component, traction components symmetrically arranged on the left and right sides of the docking component, a drying component arranged on the top side of the traction component near the docking component, and a pressurizing component arranged on the top side of the traction component away from the docking component.

[0005] The pressurizing component includes an outer rotating cylinder shell, an oil tank is fixedly connected to the axial center of the inner cavity of the outer rotating cylinder shell, insertion nozzles are evenly arranged on the outer surface of the oil tank, ignition nozzles are evenly arranged in the inner cavity of the outer rotating cylinder shell, the oil tank can evenly supply oil to the external ignition nozzles through the insertion nozzles, a main nozzle is fixedly connected to the axial center of the inner cavity of the oil tank, the oil tank can evenly spray fire outward from the axial center position through the main nozzle, and a compression pad is fixedly connected to the inner wall of the outer rotating cylinder shell away from the docking component;

[0006] The drying component includes an insulated inner cylinder. A flow-guiding component is evenly arranged on the side of the inner cavity away from the docking component. A mesh partition is fixedly connected to the inner wall of the insulated inner cylinder, which can separate the internal cryolite blocks from the outer rotating shell. Elastic push plates are evenly arranged on the inner wall of the mesh partition. A flow-dividing shaft is fixedly connected to the axis of the inner cavity of the insulated inner cylinder. Inner flame nozzles are evenly arranged within the inner cavity of the flow-dividing shaft, and the flow-dividing shaft sprays flame outward through the inner flame nozzles.

[0007] Furthermore, the traction component includes a guide base plate, which is fixed to the ground. An adjusting support rod is slidably connected to the left side of the inner wall of the guide base plate, and a vertical support rod is slidably connected to the right side of the inner wall of the guide base plate. An external traction ring is fixedly connected to the top of the vertical support rod. A torque drum is evenly arranged in the inner cavity of the external traction ring, and a meshing wheel is fixedly connected to the outer surface of the output shaft of the torque drum.

[0008] Furthermore, the inner wall of the external traction ring is rotatably connected to the outer surface of the heat-insulating inner cylinder via the outer shell, and the side of the heat-insulating inner cylinder near the docking component is fixedly connected to the inner wall of the outer shell. The outer surface of the meshing wheel is meshed with the outer surface of the outer rotating shell via a mating groove. The end of the ignition nozzle away from the fuel tank is slidably connected to the outer surface of the mesh partition via a sliding groove. The outer surface of the main nozzle is slidably connected to the inner wall of the splitting shaft tube. The outer surface of the elastic push plate is fixedly connected to the inner wall of the mesh partition. The top of the adjusting support rod is rotatably connected to the axis of the outer surface of the fuel tank. The end of the ignition nozzle away from the heat-insulating inner cylinder is fixedly connected to the outer surface of the fuel tank via a plug-in nozzle. The inner wall of the outer rotating shell is slidably connected to the outer surface of the heat-insulating inner cylinder, and the side of the compression pad away from the fuel tank is pressed against the outer surface of the heat-insulating inner cylinder.

[0009] Furthermore, the docking component includes a fixed base, with receiving frames symmetrically arranged on the front and rear sides of the outer surface of the fixed base. A bidirectional clamping claw is fixedly connected to the middle of the upper surface of the fixed base. After the bidirectional clamping claw clamps the outer surface of the vertical support rod on the corresponding side, the outer cylinder shell can be moved horizontally by pulling the external traction ring. A docking disc shell is fixedly connected to the top of the bidirectional clamping claw. Sliding inner sleeves are evenly arranged on the left and right sides of the inner cavity of the docking disc shell.

[0010] Furthermore, the sliding inner sleeve includes a limiting slide cylinder, with a solid end fixedly connected to the end of the limiting slide cylinder away from the drying component. The inner cavity of the limiting slide cylinder is evenly provided with drainage grooves, and a spring washer is fitted onto the outer surface of the limiting slide cylinder. The outer surface of the limiting slide cylinder is slidably connected to the inner cavity of the docking plate shell through a through-hole. Both the left and right sides of the outer surface of the docking plate shell are inserted into the end of the heat insulation inner cylinder away from the oil tank through circular grooves.

[0011] Furthermore, the drainage component includes a mesh cylinder shell, a solid sliding plate is slidably connected to the left side of the inner wall of the mesh cylinder shell, a folded inner tube is fixedly connected to the axis on the right side of the outer surface of the solid sliding plate, a temperature sensing rod is fixedly connected to the right end of the folded inner tube through the sliding plate, the temperature sensing rod can detect the temperature of the surrounding environment through a thermometer on its outer surface, a heat-insulating inner plug is fixedly connected to the right end of the temperature sensing rod, and an outer sealing plate is fixedly connected to the right end of the heat-insulating inner plug.

[0012] Furthermore, the outer surface of the mesh shell is fixedly connected to the side of the inner cavity of the heat-insulating inner cylinder away from the docking component, the outer surface of the heat-insulating inner plug is slidably connected to the axis of the inner cavity of the mesh shell through the through-hole, and the outer surface of the outer sealing plate is pressed against the outer surface of the mesh shell.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This device can simultaneously spray fire from both inside and outside the mesh partition through the inner flame nozzle and the ignition nozzle, uniformly heating the cryolite inside and outside the mesh partition. Because the outer rotating cylinder reciprocates under the control of the adjusting support rod, the inner flame nozzle and the ignition nozzle work together to uniformly heat the inside of the mesh partition, thus avoiding the problems of uneven heating of the cryolite and over-drying of the cryolite, which would result in scorching.

[0015] 2. When heating cryolite, the device continuously rotates the pressurizing and drying components, preventing the cryolite inside the drying component from piling up. Meanwhile, the internally compressed elastic pusher continuously impacts the cryolite as it tumbles, further breaking up any clumps and preventing the cryolite from sticking together due to open flame heating, thus avoiding the problem of cryolite clumping.

[0016] 3. During the drying of cryolite, the high temperature of the water vapor will increase the internal pressure of the mesh partition. Therefore, during processing, the inner shell of the outer cylinder may burst due to the high pressure. At this time, the sliding inner sleeves on both sides of the docking plate shell need to automatically guide the high pressure water vapor to reduce the pressure of the outer cylinder shell. This will ensure that the cryolite inside does not flow into the docking plate shell, thus achieving the pressure reduction.

[0017] 4. When the outer rotating shell slides into the interior of the outer shell under the traction of the adjusting support rod, the temperature sensing rod extends into the interior of the mesh partition and comes into direct contact with the cryolite inside. It cyclically measures the average temperature of the outer surface of the cryolite, thereby achieving temperature control and avoiding problems such as overheating and carbonization of the cryolite. After heating is completed, the temperature sensing rod will retract into the interior of the mesh shell for heat insulation protection, preventing the temperature sensing rod from being in a high-temperature environment at all times, which could cause abnormal temperature sensing and maintain the sensitivity of the temperature sensing rod. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the pressurizing component of the present invention;

[0021] Figure 4 This is a cross-sectional view of the drying component of the present invention;

[0022] Figure 5 This is a schematic diagram of the traction component of the present invention;

[0023] Figure 6 This is a cross-sectional view of the docking component of the present invention;

[0024] Figure 7 This is a schematic diagram of the sliding inner sleeve of the present invention;

[0025] Figure 8 This is a cross-sectional view of the drainage component of the present invention.

[0026] In the diagram: 1. Docking component; 2. Traction component; 3. Pressurizing component; 4. Drying component; 31. Outer rotating shell; 32. Fitting groove; 33. Oil tank; 34. Insert nozzle; 35. Ignition nozzle; 36. Main nozzle; 37. Compression pad; 41. Insulated inner cylinder; 42. Mesh baffle; 43. Elastic push plate; 44. Diverter shaft tube; 45. Inner flame nozzle; 46. Outer shell; 21. Guide base plate; 22. Adjusting support rod; 23. Vertical support 24. Rod; 25. External traction ring; 26. Torque drum; 17. Engaging wheel; 18. Fixed base; 19. Receiving frame; 10. Two-way clamping claw; 11. Connecting disc shell; 12. Sliding inner sleeve; 13. Limiting slide cylinder; 14. Drainage groove; 15. Solid end; 16. Spring washer; 17. Drainage component; 18. Mesh cylinder shell; 19. Solid slide plate; 20. Folded inner tube; 21. Temperature sensing rod; 22. Heat insulation inner plug; 23. Outer sealing plate. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0028] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: a drying device for a cryolite production line, including a docking component 1, traction components 2 symmetrically arranged on the left and right sides of the docking component 1, a drying component 4 arranged on the top side of the traction component 2 close to the docking component 1, and a pressurizing component 3 arranged on the top side of the traction component 2 away from the docking component 1.

[0029] The pressurizing component 3 includes an outer rotating cylinder shell 31. An oil tank 33 is fixedly connected to the axial center of the inner cavity of the outer rotating cylinder shell 31. Insert nozzles 34 are evenly arranged on the outer surface of the oil tank 33. Ignition nozzles 35 are evenly arranged in the inner cavity of the outer rotating cylinder shell 31. The oil tank 33 can evenly supply oil to the external ignition nozzles 35 through the insert nozzles 34. A main nozzle 36 is fixedly connected to the axial center of the inner cavity of the oil tank 33. The oil tank 33 can evenly spray fire outward from the axial center position through the main nozzle 36. A compression pad 37 is fixedly connected to the inner wall of the outer rotating cylinder shell 31 on the side away from the docking component 1.

[0030] The drying component 4 includes an insulated inner cylinder 41. A flow guiding component 5 is evenly arranged on the side of the inner cavity of the insulated inner cylinder 41 away from the docking component 1. A mesh partition 42 is fixedly connected to the inner wall of the insulated inner cylinder 41. The mesh partition 42 can separate the ice crystal blocks inside from the outer rotating cylinder shell 31. An elastic push plate 43 is evenly arranged on the inner wall of the mesh partition 42. A diversion shaft tube 44 is fixedly connected to the axis of the inner cavity of the insulated inner cylinder 41. An inner flame nozzle 45 is evenly arranged in the inner cavity of the diversion shaft tube 44. The diversion shaft tube 44 sprays fire outward through the inner flame nozzle 45.

[0031] The traction component 2 includes a guide base plate 21, which is fixed to the ground. An adjustment support rod 22 is slidably connected to the left side of the inner wall of the guide base plate 21, and a vertical support rod 23 is slidably connected to the right side of the inner wall of the guide base plate 21. An external traction ring 24 is fixedly connected to the top of the vertical support rod 23. A torque drum 25 is evenly arranged in the inner cavity of the external traction ring 24, and a meshing wheel 26 is fixedly connected to the outer surface of the output shaft of the torque drum 25.

[0032] The inner wall of the external traction ring 24 is rotatably connected to the outer surface of the heat-insulating inner cylinder 41 via the outer shell 46, and the side of the heat-insulating inner cylinder 41 closest to the docking component 1 is fixedly connected to the inner wall of the outer shell 46. The outer surface of the meshing wheel 26 is engaged with the outer surface of the outer rotating shell 31 via the mating groove 32. The end of the ignition nozzle 35 away from the fuel tank 33 is slidably connected to the outer surface of the mesh partition 42 via a sliding groove. The outer surface of the main nozzle 36 is slidably connected to the inner wall of the split shaft tube 44, and the outer surface of the elastic push plate 43 is fixedly connected to the inner wall of the mesh partition 42. The top of the adjustment support rod 22 is rotatably connected to the axis of the outer surface of the oil tank 33. The end of the ignition nozzle 35 away from the heat insulation inner cylinder 41 is fixedly connected to the outer surface of the oil tank 33 through the plug nozzle 34. The inner wall of the outer rotating cylinder shell 31 is slidably connected to the outer surface of the heat insulation inner cylinder 41, and the side of the compression pad cylinder 37 away from the oil tank 33 is pressed against the outer surface of the heat insulation inner cylinder 41.

[0033] When using this device to dry cryolite, the outer shells 46 on both sides are pushed open by the docking component 1 at the shaft. Cryolite raw material is then placed into the opened mesh partition 42. The docking component 1 then pulls the outer shells 46 back to their original positions, completing the loading process. Figure 1 As shown.

[0034] During the drying process, the oil tank 33 sprays fuel to the outside through the outer insertion nozzle 34 and the main nozzle 36 at the shaft center. The main nozzle 36 in the middle directly ignites the fuel and starts to spray flames to the outside. At this time, after the ignition nozzle 35 supplies fuel, it sprays flames through the end. The flames are then applied to the mesh of the mesh partition 42 by the groove of the heat-insulating inner cylinder 41, directly heating the cryolite inside. The main nozzle 36 at the shaft center is also inserted into the interior of the split shaft tube 44, and the flames are directly sprayed and heated to the inner wall of the mesh partition 42 through the inner flame nozzle 45.

[0035] During the heating process, the guide base plate 21 will uniformly pull the side adjustment support rod 22 to move closer to the docking part 1, and then push the adjustment support rod 22 back to its original position. At this time, the ignition nozzle 35 will slide along the horizontal groove of the heat insulation inner cylinder 41, and the main nozzle 36 will also slide along the inner wall of the split axis tube 44, thereby uniformly controlling the flame spray range and ensuring uniform heating.

[0036] When the support rod 22 is moved, the torque drum 25 in the inner cavity of the external traction ring 24 will control the outer rotating shell 31 to rotate through the meshing wheel 26. At this time, the end of the ignition nozzle 35 will drive the heat insulation inner cylinder 41 to rotate around the axis of the outer shell 46 through the sliding groove of the heat insulation inner cylinder 41, so that the ice crystals inside the heat insulation inner cylinder 41 will continuously turn over. When the ice crystals turn over, they will continuously hit the elastic push plate 43, causing the elastic push plate 43 to rebound and generate an impact, further dispersing the accumulated ice crystals.

[0037] When the heating operation begins, the bidirectional locking claws 13 on both sides of the fixed base 11 extend and clamp the outer surface of the vertical support rod 23. Then, the locking claws push the vertical support rods 23 on both sides apart, so that the side of the heat-insulating inner cylinder 41 is separated from the slot on the outer surface of the docking plate shell 14, thereby realizing the feeding and discharging operation. The receiving frames 12 on the front and rear sides collect the poured ice crystals through the mesh partition 42.

[0038] Example 2, please refer to Figures 1-8The present invention provides a technical solution: Based on the first embodiment, the docking component 1 includes a fixed base 11, and receiving frames 12 are symmetrically arranged on the front and rear sides of the outer surface of the fixed base 11. A bidirectional clamping claw 13 is fixedly connected to the middle of the upper surface of the fixed base 11. After the bidirectional clamping claw 13 clamps the outer surface of the vertical support rod 23 on the corresponding side, the outer cylinder shell 46 can be moved horizontally by pulling the external traction ring 24. A docking disc shell 14 is fixedly connected to the top of the bidirectional clamping claw 13. Sliding inner sleeves 15 are evenly arranged on the left and right sides of the inner cavity of the docking disc shell 14.

[0039] The sliding inner sleeve 15 includes a limiting slide cylinder 151. A solid end 153 is fixedly connected to the end of the limiting slide cylinder 151 away from the drying component 4. The inner cavity of the limiting slide cylinder 151 is evenly provided with a flow-guiding groove 152, and a spring washer 154 is sleeved on the outer surface of the limiting slide cylinder 151. The outer surface of the limiting slide cylinder 151 is slidably connected to the inner cavity of the docking plate shell 14 through a through-hole. The left and right sides of the outer surface of the docking plate shell 14 are inserted into the end of the heat insulation inner cylinder 41 away from the oil tank 33 through a circular groove.

[0040] The drainage component 5 includes a mesh cylinder shell 51. A solid slide plate 52 is slidably connected to the left side of the inner wall of the mesh cylinder shell 51. A folded inner tube 53 is fixedly connected to the axis on the right side of the outer surface of the solid slide plate 52. A temperature sensing rod 54 is fixedly connected to the right end of the folded inner tube 53 through the slide plate. The temperature sensing rod 54 can detect the temperature of the surrounding environment through a thermometer on its outer surface. A heat-insulating inner plug 55 is fixedly connected to the right end of the temperature sensing rod 54. An outer sealing plate 56 is fixedly connected to the right end of the heat-insulating inner plug 55.

[0041] The outer surface of the mesh shell 51 is fixedly connected to the side of the inner cavity of the heat-insulating inner cylinder 41 away from the docking part 1. The outer surface of the heat-insulating inner plug 55 is slidably connected to the axis of the inner cavity of the mesh shell 51 through the through hole. The outer surface of the outer sealing plate 56 is pressed against the outer surface of the mesh shell 51.

[0042] During heating, the water on the outer surface of the cryolite turns into water vapor, which increases the actual pressure inside the heat-insulating inner cylinder 41. The high pressure then pushes the solid end 153 into the interior of the docking plate shell 14, allowing the water vapor to be discharged into the interior of the docking plate shell 14 through the drainage groove 152 of the limiting slide cylinder 151, thus achieving pressure reduction.

[0043] When the outer rotating shell 31 slides into the inner part of the outer shell 46 under the traction of the adjusting support rod 22, the internal space of the outer rotating shell 31 decreases and the compression pad 37 is squeezed. Therefore, the solid sliding plate 52 will slide into the inner part of the mesh shell 51. Then, the temperature sensing rod 54 is pushed by the folded inner tube 53. After the heat insulation inner plug 55 slides out from the inside of the mesh shell 51, it extends into the inside of the mesh partition 42 along with the temperature sensing rod 54 and comes into direct contact with the cryolite inside. The average temperature of the outer surface of the cryolite is measured in a cycle, thereby achieving the temperature control effect.

[0044] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A drying device for a cryolite production line, comprising a docking component (1), wherein traction components (2) are symmetrically arranged on the left and right sides of the docking component (1), a drying component (4) is arranged on the top side of the traction component (2) near the docking component (1), and a pressurizing component (3) is arranged on the top side of the traction component (2) away from the docking component (1), characterized in that: The pressurizing component (3) includes an outer rotating cylinder shell (31), an oil tank (33) is fixedly connected to the axial center of the inner cavity of the outer rotating cylinder shell (31), insertion nozzles (34) are uniformly arranged on the outer surface of the oil tank (33), ignition nozzles (35) are uniformly arranged in the inner cavity of the outer rotating cylinder shell (31), a main nozzle (36) is fixedly connected to the axial center of the inner cavity of the oil tank (33), and a compression pad (37) is fixedly connected to the side of the inner wall of the outer rotating cylinder shell (31) away from the docking component (1). The drying component (4) includes an insulated inner cylinder (41). A flow guiding component (5) is uniformly arranged on the side of the inner cavity of the insulated inner cylinder (41) away from the docking component (1). A mesh partition (42) is fixedly connected to the inner wall of the insulated inner cylinder (41). An elastic push plate (43) is uniformly arranged on the inner wall of the mesh partition (42). A flow splitting core tube (44) is fixedly connected to the axis of the inner cavity of the insulated inner cylinder (41). An inner flame nozzle (45) is uniformly arranged in the inner cavity of the flow splitting core tube (44). The end of the ignition nozzle (35) away from the fuel tank (33) is slidably connected to the outer surface of the mesh partition (42) via a groove.

2. The drying apparatus for a cryolite production line according to claim 1, characterized in that: The traction component (2) includes a guide base plate (21), an adjusting support rod (22) is slidably connected to the left side of the inner wall of the guide base plate (21), a vertical support rod (23) is slidably connected to the right side of the inner wall of the guide base plate (21), an external traction ring (24) is fixedly connected to the top of the vertical support rod (23), a torque drum (25) is evenly arranged in the inner cavity of the external traction ring (24), and a meshing wheel (26) is fixedly connected to the outer surface of the output shaft of the torque drum (25).

3. The drying apparatus for a cryolite production line according to claim 2, characterized in that: The inner wall of the external traction ring (24) is rotatably connected to the outer surface of the heat-insulating inner cylinder (41) through the outer cylinder shell (46), and the side of the heat-insulating inner cylinder (41) near the docking component (1) is fixedly connected to the inner wall of the outer cylinder shell (46). The outer surface of the meshing wheel (26) is meshed with the outer surface of the outer rotating cylinder shell (31) through the mating groove (32).

4. The drying apparatus for a cryolite production line according to claim 3, characterized in that: The outer surface of the main nozzle (36) is slidably connected to the inner wall of the split shaft tube (44), and the outer surface of the elastic push plate (43) is fixedly connected to the inner wall of the mesh partition (42).

5. The drying apparatus for a cryolite production line according to claim 4, characterized in that: The top of the adjusting support rod (22) is rotatably connected to the center of the outer surface of the oil tank (33). The end of the ignition nozzle (35) away from the heat insulation inner cylinder (41) is fixedly connected to the outer surface of the oil tank (33) through the plug-in nozzle (34). The inner wall of the outer rotating cylinder shell (31) is slidably connected to the outer surface of the heat insulation inner cylinder (41), and the side of the compression pad cylinder (37) away from the oil tank (33) is pressed against the outer surface of the heat insulation inner cylinder (41).

6. The drying apparatus for a cryolite production line according to claim 1, characterized in that: The docking component (1) includes a fixed base (11), and receiving frames (12) are symmetrically arranged on the front and rear sides of the outer surface of the fixed base (11). A bidirectional locking claw (13) is fixedly connected to the middle of the upper surface of the fixed base (11). A docking disc shell (14) is fixedly connected to the top of the bidirectional locking claw (13). Sliding inner sleeves (15) are evenly arranged on the left and right sides of the inner cavity of the docking disc shell (14).

7. The drying apparatus for a cryolite production line according to claim 6, characterized in that: The sliding inner sleeve (15) includes a limiting slide cylinder (151). A solid end (153) is fixedly connected to one end of the limiting slide cylinder (151) away from the drying component (4). The inner cavity of the limiting slide cylinder (151) is evenly provided with a drainage groove (152). A spring washer (154) is sleeved on the outer surface of the limiting slide cylinder (151). The outer surface of the limiting slide cylinder (151) is slidably connected to the inner cavity of the docking plate shell (14) through a through-hole. The left and right sides of the outer surface of the docking plate shell (14) are inserted into the end of the heat insulation inner cylinder (41) away from the oil tank (33) through a circular groove.

8. The drying apparatus for a cryolite production line according to claim 1, characterized in that: The drainage component (5) includes a mesh cylinder shell (51), a solid slide plate (52) is slidably connected to the left side of the inner wall of the mesh cylinder shell (51), a folded inner tube (53) is fixedly connected to the axis on the right side of the outer surface of the solid slide plate (52), a temperature sensing rod (54) is fixedly connected to the right end of the folded inner tube (53) through the slide plate, a heat-insulating inner plug (55) is fixedly connected to the right end of the temperature sensing rod (54), and an outer sealing plate (56) is fixedly connected to the right end of the heat-insulating inner plug (55).

9. The drying apparatus for a cryolite production line according to claim 8, characterized in that: The outer surface of the mesh shell (51) is fixedly connected to the side of the inner cavity of the heat-insulating inner cylinder (41) away from the docking component (1). The outer surface of the heat-insulating inner plug (55) is slidably connected to the axis of the inner cavity of the mesh shell (51) through the through hole. The outer surface of the outer sealing plate (56) is pressed against the outer surface of the mesh shell (51).

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