Salt lake lithium extraction equipment

Abstract

The utility model relates to salt lake lithium extraction equipment, which effectively solves the problem that part of lithium carbonate crystals are easy to adhere to the inner wall of a tank body in the mixing process of lithium liquid and sodium carbonate. Comprising a shell and a feeding assembly arranged at the top of the shell, the feeding assembly comprises two feeding ports, a stirring shaft is coaxially arranged in the shell, the tail end of the stirring shaft penetrates through the shell, a spiral blade is coaxially fixed to the stirring shaft, a conical plate located below the spiral blade is coaxially fixed in the shell, and the tail end of the conical plate penetrates through the shell. The shell is divided into an upper chamber and a lower chamber by the conical plate; the device is ingenious in structure and convenient to use, through the arrangement of the conical plate, the arc-shaped barrel, the bearing plate and the like, falling lithium carbonate crystals are buffered through the arc-shaped barrel, the situation that the crystals directly impact on the bearing plate and consequently the lithium carbonate is broken is avoided, meanwhile, an accelerated sodium chloride solution also flushes the filter holes, and the service life of the lithium carbonate is prolonged. Fine substances carried in the solution are prevented from blocking the filter holes.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium extraction devices, in particular to a salt lake lithium extraction device. Background Art

[0002] With the widespread application of lithium and lithium salts and the continuous development of high-tech, especially the rapid development of the lithium battery industry in recent years, the market demand for lithium has grown rapidly.

[0003] In Chinese Patent Application No.: 202223606831.2, a device for extracting lithium from a salt lake is disclosed, comprising a device body, a liquid outlet is fixedly provided on the rear side of the device body, a material outlet is provided on the right side of the device body, a processing bin is provided inside the device body, a solid-liquid separation mechanism is provided inside the processing bin, a feed pipe is fixedly installed on the left side of the top of the device body, a material solenoid valve is fixedly provided on the outside of the feed pipe, a sedimentation tank is fixedly installed on the top of the feed pipe, a sealing cover is fixedly provided on the top surface of the sedimentation tank by screws, and a feed port and a drive motor are fixedly provided on the top of the sealing cover; by providing the solid-liquid separation mechanism in the device for extracting lithium from a salt lake, the purpose of alleviating the blockage of the filter plate is achieved, the separation effect between the NaCL solution and Li2CO3 is ensured, and the efficiency of lithium extraction of the device is improved.

[0004] However, the existing salt lake lithium extraction equipment still has the following problems:

[0005] 1. When lithium liquid and sodium carbonate are mixed in the lithium extraction equipment, the mixed lithium carbonate is irregular crystals. When the lithium carbonate crystals fall downward, some lithium carbonate crystals are easily broken due to direct impact on the sieve plate, which not only causes waste of lithium carbonate, but also the broken fine particles are easy to clog the filter holes, affecting the solid-liquid separation.

[0006] 2. During the mixing process of lithium liquid and sodium carbonate, some lithium carbonate crystals tend to adhere to the inner wall of the tank, which is very difficult to clean after the equipment has been used for a long time. Utility Model Content

[0007] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a salt lake lithium extraction equipment, which effectively solves the problems mentioned in the background technology.

[0008] The technical solution is as follows: the utility model comprises a shell, a feeding assembly arranged on the top of the shell, the feeding assembly comprises two feeding ports, a stirring shaft is coaxially arranged in the shell, the end of the stirring shaft passes through the shell, a spiral blade is coaxially fixed on the stirring shaft, a conical plate located below the spiral blade is coaxially fixed in the shell, the conical plate divides the shell into an upper chamber and a lower chamber, an arc-shaped cylinder coaxially fixed with the stirring shaft is arranged below the conical plate, a receiving plate is coaxially fixed to the bottom of the arc-shaped cylinder, filter holes are provided on the arc-shaped cylinder and the receiving plate, and a stirring motor located at the top of the shell is coaxially fixed on the stirring shaft;

[0009] The conical plate includes an inclined conical portion and a vertical vertical portion, a cylinder is fixed on the vertical portion, two semicircular baffles are arranged inside the cylinder, and semicircular holes matching the stirring shaft are opened on the two baffles, threaded rods penetrating the cylinder are fixed on the two semicircular plates, threaded cylinders are respectively threadedly connected to the two threaded rods, and coaxial transmission gears are sleeved on the threaded cylinders, and the transmission gears are rotatably connected to the cylinder, a tooth plate located below the cylinder is coaxially rotated on the vertical portion, a toothed ring is fixed at the outer edge of the toothed plate, and the two transmission gears are respectively meshed with the toothed rings, a transmission motor is fixed above the cylinder, a transmission gear is coaxially fixed to the output end of the transmission motor, and the transmission gear is meshed with the toothed ring.

[0010] Preferably, a plurality of scraping frames evenly distributed around the circumference are coaxially fixed on the stirring shaft, the scraping frames are respectively fitted with the inner wall of the shell and the tapered portion, and a scraper is fixed on the side of the scraping frame.

[0011] Preferably, a cavity is provided inside the stirring shaft, a jet groove is provided inside the scraper frame, a guide hole penetrating the cavity and the jet groove is provided on the stirring shaft, a through groove is provided on the fitting surface between the scraper frame, the inner wall of the shell and the conical portion, and a plurality of spray holes are provided in the through groove that penetrate into the jet groove.

[0012] Preferably, a material guide trough matching the receiving plate is obliquely arranged on the outer wall of the shell, a discharge port is arranged at the lowest point of the material guide trough, the bottom of the shell is an inclined surface, and a liquid outlet pipe located at the lowest point of the inclined surface is opened on the side wall of the shell.

[0013] Preferably, the fitting surfaces of the two baffles are both provided with sealing strips.

[0014] Preferably, a water inlet pipe is provided at the bottom of the stirring shaft, and the water inlet pipe is rotatably connected to the stirring shaft.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the settings of conical plates, arc-shaped cylinders and receiving plates, when the lithium liquid and sodium carbonate are completely fused, the transmission motor starts to separate the two baffles, and the lithium carbonate crystals and sodium chloride solution formed by the two fall vertically. The arc-shaped cylinder buffers the falling lithium carbonate crystals to prevent the crystals from directly impacting the receiving plate and causing the lithium carbonate to break. At the same time, the accelerated sodium chloride solution will also flush the filter holes to prevent the fine substances carried in the solution from clogging the filter holes.

[0017] 2. Through the arrangement of a scraper and a scraper frame, the scraper frame rotates along with the stirring shaft, and during the rotation, the scraper cleans the inner wall of the shell.

[0018] 3. Through the settings of water inlet pipe, jet groove and spray hole, when cleaning the inner wall, start the stirring motor so that the stirring shaft drives the scraper frame to rotate. Then the worker only needs to connect the water inlet pipe to the water pump and the water source. The clean water passes through the cavity, the jet groove in turn, and then is sprayed out through the spray hole. On this basis, the scraper is used to not only facilitate cleaning but also has a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a stereogram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the arc-shaped cylinder in the utility model.

[0022] Figure 4 It is a structural schematic diagram of the conical plate in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the baffle in the utility model.

[0024] Figure 6 It is a structural schematic diagram of the scraping frame in the utility model.

[0025] Figure 7 It is a structural schematic diagram of the jet flow slot in the utility model.

[0026] Explanation of the symbols in the schematic diagram:

[0027] 10. Shell; 101. Upper chamber; 102. Lower chamber; 11. Feed port; 12. Stirring shaft; 121. Cavity; 122. Guide hole; 13. Spiral blade; 14. Stirring motor; 15. Liquid outlet pipe; 20. Conical plate; 201. Conical part; 202. Vertical part; 203. Cylinder; 30. Arc cylinder; 31. Receiver plate; 40. Baffle; 401. Semicircular hole; 402. Threaded rod; 41. Threaded cylinder; 42. Transmission gear; 43. Tooth plate; 44. Gear ring; 45. Transmission motor; 46. Transmission gear; 50. Scraper frame; 501. Jet slot; 51. Scraper; 52. Through slot; 53. Spray hole; 60. Guide slot; 61. Feed port; 70. Water inlet pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Depend on Figures 1 to 5 The invention provides a method for preparing a material comprising a shell 10 and a feeding assembly disposed on the top of the shell 10. The feeding assembly comprises two feeding ports 11. Lithium liquid and sodium carbonate powder are poured into the shell 10 through the two feeding ports 11. A stirring shaft 12 is coaxially arranged in the shell 10. The end of the stirring shaft 12 passes through the shell 10. The stirring shaft 12 is rotatably connected to the shell 10. A spiral blade 13 is coaxially fixed on the stirring shaft 12. A conical plate 20 located below the spiral blade 13 is coaxially fixed in the shell 10. The conical plate 20 divides the shell 10 into an upper chamber 101 and a lower chamber 102. When lithium carbonate crystals and sodium chloride are mixed, the upper chamber 101 and the lower chamber 102 are separated. When the solution falls from the conical plate 20, the flow rate of the solution can be accelerated. An arc cylinder 30 coaxially fixed with the stirring shaft 12 is provided below the conical plate 20 to receive the lithium carbonate crystals coming down from the conical plate 20 to avoid direct impact on the sieve plate and causing damage to the lithium carbonate crystals. A receiving plate 31 is coaxially fixed to the bottom of the arc cylinder 30. Filter holes are provided on the arc cylinder 30 and the receiving plate 31. When the lithium carbonate crystals and the sodium chloride solution fall from the conical plate 20, the arc cylinder 30 and the receiving plate 31 can both play a role in solid-liquid separation. A stirring motor 14 located at the top of the housing 10 is coaxially fixed on the stirring shaft 12;

[0030] Considering that a dedicated valve needs to be set inside the conical plate 20 to control the falling of lithium carbonate crystals and sodium chloride solution after fusion, the conical plate 20 includes an inclined conical portion 201 and a vertical portion 202, a cylinder 203 is fixed on the vertical portion 202, and two semicircular baffles 40 are arranged inside the cylinder 203. The two baffles 40 are both provided with semicircular holes 401 matching the stirring shaft 12, and the fitting surfaces of the two baffles 40 are both provided with sealing strips. When the two semicircular plates are close to each other and form a full circle, the sealing strips The two semicircular plates are fitted with the stirring shaft 12 to strengthen the sealing of the upper chamber 101 and the lower chamber 102. The two semicircular plates are fixed with threaded rods 402 that penetrate the cylinder 203. The two threaded rods 402 are respectively threadedly connected with threaded cylinders 41. The threaded cylinders 41 are sleeved with coaxial transmission gears 42. The transmission gears 42 are rotatably connected with the cylinder 203. A toothed plate 43 located below the cylinder 203 is coaxially rotated on the vertical portion 202. A toothed ring 44 is fixed at the outer edge of the toothed plate 43. The two transmission gears 42 are respectively meshed with the toothed ring 44. A transmission motor 45 is fixed above the cylinder 203, and a transmission gear 46 is coaxially fixed to the output end of the transmission motor 45. The transmission gear 46 is meshed with the gear ring 44. Through the arrangement of the conical plate 20, the arc cylinder 30 and the receiving plate 31, when the lithium liquid and the sodium carbonate are mixed inside the shell 10, the stirring motor 14 is started to drive the stirring shaft 12 and the spiral blade 13 to rotate, and the lithium liquid and the sodium carbonate are accelerated to merge inside the shell 10 and form lithium carbonate crystals. After a period of fusion, the transmission motor 45 is started, and the two baffles 40 move away from the stirring shaft 1 2, the sodium chloride solution and lithium carbonate crystals generated inside thereof increase their flow rate when passing through the vertical portion 202 of the conical plate 20, and the lithium carbonate crystals are protected by the buffer of the arc tube 30 so that they will not be broken due to excessive impact force. The arc tube 30 is cleaned by the accelerated sodium chloride solution to prevent the irregular corners of the lithium carbonate crystals from being embedded in the filter holes, and also to prevent the fine impurities carried in the solution from being blocked in the filter holes. Finally, the lithium carbonate crystals gather at the outer edge of the receiving plate 31 under the action of centrifugal force, and the worker can then open the shell 10 to collect them.

[0031] refer to Figure 6 As shown, considering that part of the lithium carbonate crystals produced during the mixing process of the lithium liquid and the sodium carbonate solution will adhere to the inner wall of the upper chamber 101, a plurality of circumferentially evenly distributed scraper frames 50 are coaxially fixed on the stirring shaft 12, and the scraper frames 50 are respectively fitted with the inner wall of the shell 10 and the tapered portion 201, and a scraper 51 is fixed to the side of the scraper frame. Through the arrangement of the scraper 51 and the scraper frame 50, the scraper frame 50 rotates along with the stirring shaft 12, and during the rotation, the scraper 51 cleans the inner wall of the shell 10.

[0032] refer to Figure 6 and Figure 7 As shown, considering that lithium liquid or sodium chloride solution is easy to remain on the inner wall of the shell 10, it is necessary to clean the inside of the shell 10 regularly. In order to facilitate cleaning, a cavity 121 is provided inside the stirring shaft 12, a jet groove 501 is provided inside the scraper frame 50, and a guide hole 122 penetrating the cavity 121 and the jet groove 501 is provided on the stirring shaft 12. A through groove 52 is provided on the contact surface between the scraper frame 50 and the inner wall of the shell 10 and the conical portion 201, and a plurality of through holes 122 penetrating to the jet groove 501 are provided in the through groove 52. The spray hole 53, the bottom of the stirring shaft 12 is provided with a water inlet pipe 70, the water inlet pipe 70 is rotatably connected to the stirring shaft 12, through the water inlet pipe 70, the spray groove 501 and the spray hole 53, when cleaning the inner wall, start the stirring motor 14, so that the stirring shaft 12 drives the scraper frame 50 to rotate, and then the worker only needs to connect the water inlet pipe 70 with the water pump and the water source, and the clean water passes through the cavity 121, the spray groove 501 in turn, and then is sprayed out through the spray hole 53. On this basis, the scraper 51 is used to facilitate cleaning and has a better cleaning effect.

[0033] refer to Figure 1 and Figure 2 As shown, considering that lithium carbonate crystals gather at the outer edge of the receiving plate 31, there is still a problem of inconvenience in collection, a guide trough 60 matching the receiving plate 31 is obliquely arranged on the outer wall of the shell 10, and a discharge port 61 is arranged at the lowest point of the guide trough 60 for discharging lithium carbonate crystals. The bottom of the shell 10 is an inclined surface, and a liquid outlet pipe 15 located at the lowest point of the inclined surface is provided on the side wall of the shell 10 for discharging waste liquid, such as sodium chloride solution. Through the guide trough and the discharge port 61, lithium carbonate crystals enter the guide trough 60 under the action of centrifugal force. Since the guide trough 60 has a certain inclination angle, the lithium carbonate crystals are discharged from the discharge port 61 under the action of gravity. At the same time, in order to facilitate the discharge of lithium carbonate crystals from the guide trough 60, a material with a smooth surface and not easy to stick is selected as the lining of the guide trough 60.

[0034] When the utility model is used:

[0035] First, lithium liquid and sodium carbonate are respectively put into the housing 10 through two feed ports 11, and the stirring motor 14 is started to drive the stirring shaft 12 and the spiral blade 13 to rotate. After a period of fusion, the lithium liquid and sodium carbonate inside finally react to form lithium carbonate crystals and sodium chloride solution. At the same time, as the scraping frame 50 rotates, the scraper 51 cleans the inner wall of the housing 10;

[0036] Then, the transmission motor 45 is started, and the two baffles 40 are driven by the gear ring 44, the transmission gear 42, the threaded cylinder 41 and the threaded rod 402 to move away from each other, and the lithium carbonate crystals and the sodium chloride solution are discharged from the vertical portion 202;

[0037] Secondly, during the falling process, the lithium carbonate crystals first pass through the buffer of the arc tube 30 to prevent the lithium carbonate crystals from directly impacting the receiving plate 31 and causing the crystals to break. When the lithium carbonate crystals fall onto the receiving plate 31, the solid-liquid separation is basically completed. At this time, the lithium carbonate crystals enter the inside of the guide groove 60 under the action of centrifugal force. Finally, the lithium carbonate crystals are discharged from the discharge port 61 under the action of gravity, and the sodium chloride solution is discharged from the liquid outlet pipe 15.

[0038] Finally, when cleaning the shell 10, start the stirring motor 14 so that the stirring shaft 12 drives the scraper frame 50 to rotate. Then the worker only needs to connect the water inlet pipe 70 to the water pump and the water source. The clean water passes through the cavity 121, the jet groove 501 in turn, and then is sprayed out through the spray hole 53. On this basis, the scraper 51 is used to not only facilitate cleaning but also has a better cleaning effect.

[0039] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A salt lake lithium extraction device, comprising a housing (10) and a feed assembly placed on the top of the housing (10), characterized in that: The feed assembly comprises two feed ports (11); a stirring shaft (12) is coaxially arranged in the shell (10); the end of the stirring shaft (12) passes through the shell (10); a spiral blade (13) is coaxially fixed on the stirring shaft (12); a conical plate (20) located below the spiral blade (13) is coaxially fixed in the shell (10); the conical plate (20) divides the shell (10) into an upper chamber (101) and a lower chamber (102); an arc-shaped cylinder (30) coaxially fixed with the stirring shaft (12) is arranged below the conical plate (20); a receiving plate (31) is coaxially fixed at the bottom of the arc-shaped cylinder (30); filter holes are provided on the arc-shaped cylinder (30) and the receiving plate (31); a stirring motor (14) located at the top of the shell (10) is coaxially fixed on the stirring shaft (12); The conical plate (20) comprises an inclined conical portion (201) and a vertical portion (202); a cylinder (203) is fixed on the vertical portion (202); two semicircular baffles (40) are arranged inside the cylinder (203); both baffles (40) are provided with semicircular holes (401) matching the stirring shaft (12); both baffles (40) are fixed with threaded rods (402) penetrating the cylinder (203); the two threaded rods (402) are respectively threadedly connected with threaded cylinders (41); the threaded cylinders (41) are sleeved with the threaded rods (402); A coaxial transmission gear (42) is provided, the transmission gear (42) is rotatably connected to the cylinder (203), a toothed plate (43) located below the cylinder (203) is coaxially rotatable on the vertical portion (202), a toothed ring (44) is fixed at the outer edge of the toothed plate (43), the two transmission gears (42) are respectively meshed with the toothed rings (44), a transmission motor (45) is fixed above the cylinder (203), a transmission gear (46) is coaxially fixed to the output end of the transmission motor (45), and the transmission gear (46) is meshed with the toothed ring (44).

2. A salt lake lithium extraction equipment according to claim 1, characterized in that: A plurality of scraper frames (50) evenly distributed around the circumference are coaxially fixed on the stirring shaft (12); the scraper frames (50) are respectively fitted with the inner wall of the shell (10) and the conical portion (201); and a scraper (51) is fixed on the side of the scraper frame (50).

3. A salt lake lithium extraction equipment according to claim 2, characterized in that: The stirring shaft (12) has a cavity (121) formed inside, the scraper frame (50) has a jet groove (501) formed inside, the stirring shaft (12) has a guide hole (122) penetrating the cavity (121) and the jet groove (501), the scraper frame (50) has a through groove (52) formed on the contact surface between the inner wall of the shell (10) and the conical portion (201), and the through groove (52) has a plurality of jet holes (53) penetrating into the jet groove (501).

4. A salt lake lithium extraction equipment according to claim 3, characterized in that: A material guide groove (60) matching the receiving plate (31) is obliquely arranged on the outer wall of the shell (10); a material discharge port (61) is arranged at the lowest point of the material guide groove (60); the bottom of the shell (10) is an inclined surface; and a liquid discharge pipe (15) located at the lowest point of the inclined surface is provided on the side wall of the shell (10).

5. The salt lake lithium extraction equipment according to claim 1, characterized in that: The fitting surfaces of the two baffles (40) are both provided with sealing strips.

6. The salt lake lithium extraction equipment according to claim 1, characterized in that: A water inlet pipe (70) is provided at the bottom of the stirring shaft (12), and the water inlet pipe (70) is rotatably connected to the stirring shaft (12).

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