Crystallization separation device of lithium hexafluorophosphate

Abstract

The invention discloses a lithium hexafluorophosphate crystallization and separation device, and relates to the technical field of lithium hexafluorophosphate crystallization and separation, the lithium hexafluorophosphate crystallization and separation device comprises a fixed seat and support legs symmetrically fixed on the periphery of the bottom of the fixed seat, the interior of the fixed seat is fixedly connected with an outer box body, and the lithium hexafluorophosphate crystallization and separation device further comprises an air inlet, an air outlet and an air outlet, an air outlet is formed in the other side of the top of the outer box body; the liquid outlet is formed in the middle of the bottom of the outer box body; the outer barrel body is installed in the outer box body, an inner barrel body is connected to the interior of the outer barrel body in a clamped mode, and a cleaning brush is installed on the lower portion of the partition plate; the swing mechanism is arranged on one side of the outer barrel; and the cleaning mechanism is arranged below the partition plate, and the problems that a lithium hexafluorophosphate solution in the device is in direct contact with the barrel for a long time, so that the barrel is easily corroded and damaged, and large lithium hexafluorophosphate crystals are still possibly contained in the device during discharging, so that the subsequent smooth discharging of the lithium hexafluorophosphate crystals is inconvenient are solved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium hexafluorophosphate crystallization separation, in particular to a lithium hexafluorophosphate crystallization separation device. Background Art

[0002] The preparation method of lithium hexafluorophosphate generally comprises: obtaining hydrogen fluoride liquid with a purity of more than 99.99wt% by distillation; introducing a mixed gas of phosphorus fluoride-free and hydrogen chloride into hydrogen fluoride and lithium fluoride to react at a certain temperature and pressure to obtain a lithium hexafluorophosphate solution, filtering the lithium hexafluorophosphate solution, sending the filtrate to a crystallization tank, precipitating lithium hexafluorophosphate at a temperature of -70°C to 80°C, filtering, and obtaining a lithium hexafluorophosphate product through primary drying and secondary drying.

[0003] Publication No. CN106621443B discloses a crystallization separation device for lithium hexafluorophosphate, comprising a cylinder, and an upper head and a lower head sealed at both ends of the cylinder, wherein a closed crystallization cavity is formed between the cylinder, the upper head and the lower head, the symmetrical two sides of the cylinder are respectively provided with rotating shafts, a filtrate outlet is provided at the junction of the cylinder and the upper head, a filtrate inlet is provided at the junction of the cylinder and the lower head, the filtrate outlet and the filtrate inlet are located on the same side of the cylinder, a filter screen is further provided in the filtrate outlet, a plurality of baffles are arranged in parallel near the filtrate outlet in the crystallization cavity, large crystals can be blocked outside the end of the baffle by the baffle, and the baffles can prevent the crystals from being blocked. The end of the plate extends into the interior of the cylinder and away from the filtrate outlet. The surface formed at the end of the baffle is relatively large, and it is difficult for large crystals to completely block the baffle gaps. The filtrate will flow from the unblocked gaps. However, since lithium hexafluorophosphate is highly oxidizing and corrosive, during the subsequent filtration of the lithium hexafluorophosphate solution, the lithium hexafluorophosphate solution attached to the inner wall of the device needs to be scraped off as soon as possible to reduce corrosion damage to the device. The lithium hexafluorophosphate solution in the device is in direct contact with the cylinder for a long time, which can easily cause corrosion damage to the cylinder. When the device is discharging, it may still contain larger pieces of lithium hexafluorophosphate crystals, which is not convenient for the subsequent smooth discharge of the lithium hexafluorophosphate crystals, and has certain limitations.

[0004] Therefore, we proposed a crystallization separation device for lithium hexafluorophosphate in order to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a crystallization separation device for lithium hexafluorophosphate to solve the problem that the lithium hexafluorophosphate solution in the device is in direct contact with the cylinder for a long time, which is easy to cause corrosion damage to the cylinder, and when the device is discharged, the interior may still contain large pieces of lithium hexafluorophosphate crystals, which is not convenient for the subsequent smooth discharge of the lithium hexafluorophosphate crystals.

[0006] To achieve the above object, the present invention provides the following technical solution: a crystallization separation device for lithium hexafluorophosphate, comprising a fixing seat and legs symmetrically fixed around the bottom of the fixing seat, wherein the fixing seat is fixedly connected to an outer box body; Also includes: An air inlet is installed on one side of the top of the outer box body, and an air outlet is installed on the other side of the top of the outer box body; A liquid discharge port is installed in the middle of the bottom of the outer box body, and the outer box body is connected to the outside through the fixing seat; The outer cylinder is installed inside the outer box, the inner cylinder is connected with the inner cylinder in a snap-fitting manner, the lower part of the outer box is fixedly connected with a partition, and the lower part of the partition is installed with a cleaning brush; The swing mechanism is arranged on one side of the outer cylinder, and the swing mechanism includes a mounting box, a motor is fixedly mounted on one side of the back of the outer box, side plates are symmetrically fixed inside the mounting box, the output end of the motor passes through the outer box and is fixedly connected to the main shaft, the bottom of the side plate is fixedly connected to the mounting frame, and the top of the side plate is fixedly connected to the top plate; The top of the top plate is rotatably connected with an upper rotating shaft, the middle outer side of the upper rotating shaft is fixedly connected to a limited position frame, the outer side of one end of the main shaft away from the motor is fixedly connected to a mounting block, one side of the lower part of the mounting block is fixedly connected to a push rod, the push rod is located on the inner side of the limit frame, one side of the limit frame is fixedly connected to a sector-shaped tooth block, a gear is installed on the top of the mounting frame, a fixing column is fixedly connected to the middle part of one side of the sector-shaped tooth block, and the fixing column is fixedly connected to the outer cylinder; The cleaning mechanism is arranged below the partition, a slide groove is provided inside the partition, a connecting block is slidably connected inside the slide groove, a lower telescopic rod is fixedly connected to the top of the connecting block, the lower telescopic rod is rotatably connected to the bottom of the outer cylinder, the top of the cleaning brush is rotatably connected to a rotating ring, and the rotating ring is sleeved on the outside of the connecting block.

[0007] Preferably, the gear is mounted on the mounting frame via a bearing seat, the sector-shaped gear block is meshingly connected with the gear, an auxiliary groove is provided on one side of the front face of the mounting box, and the fixing column is slidably connected to the auxiliary groove.

[0008] By adopting the above technical solution, a swing mechanism is provided, which can make the limit frame reciprocate in an arc shape. The limit frame is fixedly connected to the fan-shaped tooth block, so that the limit frame drives the fan-shaped tooth block to swing back and forth in an arc shape, and the fan-shaped tooth block then drives the outer cylinder to swing back and forth through the fixed column, so that the lithium hexafluorophosphate solution inside the inner cylinder is evenly precipitated, and the cleaning mechanism is cooperated with the cleaning brush to scrape the inner bottom surface of the outer box body, thereby reducing the lithium hexafluorophosphate attached to the bottom surface of the outer box body, causing corrosion damage to the outer box body.

[0009] Preferably, the two sides of the connecting block are fixedly connected with limiting plates, the limiting plates include two groups symmetrically arranged in an upper and lower direction, the limiting plates are fitted with partitions, clamping blocks are symmetrically fixed on the inner side of the rotating circle, arc grooves are symmetrically opened on the outer side of the lower part of the connecting block, and the clamping blocks are slidably connected to the arc grooves.

[0010] By adopting the above technical solution, before use, the operator rotates the rotating circle so that the rotating circle drives the card block to disengage from the lower card slot at the bottom, and then slides up the rotating circle to adjust the height, thereby adjusting the height of the cleaning brush.

[0011] Preferably, an upper slot and a lower slot are symmetrically provided on the outer side of the lower portion of the connecting block, the upper slot is located on the top side of the arc-shaped slot, the lower slot is located on the bottom side of the arc-shaped slot, and the arc-shaped slot is connected to the upper slot and the lower slot respectively.

[0012] By adopting the above technical solution, when the card block is located at the upper card slot, the rotating circle is rotated to drive the card block to be stuck in the upper card slot, which facilitates the upward adjustment of the cleaning brush and reduces the friction between the cleaning brush and the bottom surface of the outer box body.

[0013] Preferably, a filter is fixedly mounted on one side of the lower portion of the inner cylinder, and a liquid outlet is symmetrically mounted on the lower portion of the front side of the outer cylinder. The filter corresponds to the position of the liquid outlet, and two liquid outlets are provided.

[0014] By adopting the above technical solution, during filtration, the cooling gas is stopped and the motor is stopped, the box door and the liquid outlet are opened, and the liquid is collected through the drain port. After the filtration is completed, the inner cylinder is pulled out to obtain the lithium hexafluorophosphate crystals inside, and the material is taken more conveniently. Preferably, an upper telescopic rod is rotatably connected to the inner upper portion of the outer box body, and one end of the upper telescopic rod away from the outer box body is fixedly connected to the outer cylinder.

[0015] By adopting the above technical solution, the upper telescopic rod is used to assist the left and right swing of the outer cylinder, and plays the role of limiting and auxiliary supporting the outer cylinder.

[0016] Preferably, the upper telescopic rods are symmetrically arranged on both sides of the outer cylinder, and there are no less than two upper telescopic rods.

[0017] By adopting the above technical solution, a plurality of symmetrically arranged upper telescopic rods can better support and assist the swing of the outer cylinder.

[0018] Preferably, a box door is hingedly connected to the middle of one side of the front side of the outer box body, and the position of the box door corresponds to that of the outer cylinder body.

[0019] By adopting the above technical solution, the box door is convenient for the operator to place and remove the inner cylinder inside, and is convenient for the subsequent material removal operation of lithium hexafluorophosphate crystals after filtration.

[0020] Compared with the prior art, the invention has the following beneficial effects: a swing mechanism is provided, which can make the limit frame reciprocate in an arc shape, and the limit frame is fixedly connected to the sector tooth block, so that the limit frame drives the sector tooth block to swing back and forth in an arc shape, and the sector tooth block then drives the outer cylinder to swing back and forth through the fixed column, so that the lithium hexafluorophosphate solution inside the inner cylinder is uniformly precipitated, and the lithium hexafluorophosphate crystals are collided and crushed with the convex blocks on the inner side of the inner cylinder, so that the lithium hexafluorophosphate crystals will not be attached to the inner wall of the inner cylinder, and after the filtration is completed, the lithium hexafluorophosphate crystals inside can be obtained by pulling out the inner cylinder, and the material is more convenient to take; 1. A swing mechanism is provided to make the limit frame reciprocate in an arc shape. The limit frame is fixedly connected to the sector tooth block. The limit frame drives the sector tooth block to swing back and forth in an arc shape. The sector tooth block then drives the outer cylinder to swing back and forth through the fixed column, so that the lithium hexafluorophosphate solution inside the inner cylinder is uniformly precipitated, and the lithium hexafluorophosphate crystals are collided and crushed with the convex blocks on the inner side of the inner cylinder, so that the lithium hexafluorophosphate crystals will not be attached to the inner wall of the inner cylinder. After a period of time, the cooling gas is stopped and the motor is operated. The box door and the liquid outlet are opened and the liquid is collected through the drain port. After the filtration is completed, the lithium hexafluorophosphate crystals inside can be obtained by pulling out the inner cylinder. The material is also more convenient to take, which solves the problem that the lithium hexafluorophosphate solution in the device is in direct contact with the cylinder for a long time, which is easy to cause corrosion damage to the cylinder, and when the device is discharged, the internal part may still contain large pieces of lithium hexafluorophosphate crystals, which is not convenient for the subsequent smooth discharge of lithium hexafluorophosphate crystals; 2. A cleaning mechanism is provided. When the outer cylinder body swings, the outer cylinder body drives the lower telescopic rod connected to the bottom rotation to move. Since the symmetrically arranged limit plates limit the connecting block, the connecting block can only move horizontally, and the connecting block slides inside the slide groove. The connecting block then drives the rotating circle and the cleaning brush at the bottom to move, so that the cleaning brush scrapes the inner bottom surface of the outer box body to reduce the lithium hexafluorophosphate attached to the bottom surface of the outer box body, causing corrosion damage to the outer box body. Before use, the operator rotates the rotating circle so that the rotating circle drives the card block to disengage from the lower card groove at the bottom, and then slides the rotating circle upward until the card block is located in the upper card groove. Rotate the rotating circle to drive the card block to be stuck in the upper card groove, which is convenient for adjusting the height of the cleaning brush and reducing the friction between the cleaning brush and the bottom surface of the outer box body. When filtering is needed, the height of the cleaning brush is reset downward for scraping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the outer box of the present invention; Figure 3 This is a schematic diagram of the internal structure of the installation box of the present invention; Figure 4 This is a schematic diagram of the gear installation structure of the present invention; Figure 5 This is a schematic diagram of the installation structure of the limit frame of the present invention; Figure 6 For the present invention Figure 1 A is an enlarged structural diagram; Figure 7 This is a schematic diagram of the installation structure of the swing block of the present invention; Figure 8 It is a schematic diagram of the internal structure of the inner cylinder of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram at B in FIG. Fig.10 It is a schematic diagram of the three-dimensional structure of the movable plate of the present invention; Fig.11 This is a schematic diagram of the mounting column structure of the present invention; Fig.12 This is a schematic diagram of the height adjustment of the cleaning brush of the present invention.

[0022] In the figure: 1. fixing seat; 2. supporting foot; 3. outer box body; 4. air inlet; 5. air outlet; 6. drain outlet; 7. installation box; 8. outer cylinder; 9. inner cylinder; 10. partition; 11. cleaning brush; 12. motor; 13. side plate; 14. main shaft; 15. mounting frame; 16. top plate; 17. upper rotating shaft; 18. limiting frame; 19. mounting block; 20. push rod; 21. sector gear block; 22. gear; 23. fixing column; 24. slide groove; 25. connecting block; 26. limiting plate; 27. lower telescopic rod; 28. rotating circle; 29. ​​clamping block; 30. arc groove; 31. upper clamping groove; 32. lower clamping groove; 33. filter screen; 34. liquid outlet; 35. upper telescopic rod; 36. box door. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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 creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-12 The present invention provides a technical solution: a crystallization separation device for lithium hexafluorophosphate, comprising a fixing seat 1 and legs 2 symmetrically fixed around the bottom of the fixing seat 1, and an outer box body 3 is fixedly connected to the inside of the fixing seat 1.

[0025] The air inlet 4 is installed on one side of the top of the outer box body 3, and the air outlet 5 is installed on the other side of the top of the outer box body 3; The liquid discharge port 6 is installed in the middle of the bottom of the outer box body 3, and the outer box body 3 passes through the fixing seat 1 and is connected to the outside; The outer cylinder 8 is installed inside the outer box 3. The inner cylinder 9 is connected to the inner part of the outer cylinder 8. The lower part of the outer box 3 is fixedly connected with a partition 10. The lower part of the partition 10 is installed with a cleaning brush 11. The swing mechanism is arranged on one side of the outer cylinder 8, and the swing mechanism includes a mounting box 7, a motor 12 is fixedly mounted on one side of the back of the outer box 3, a side plate 13 is symmetrically fixed inside the mounting box 7, an output end of the motor 12 passes through the outer box 3 and is fixedly connected to a main shaft 14, a mounting frame 15 is fixedly connected to the bottom of the side plate 13, and a top plate 16 is fixedly connected to the top of the side plate 13; The top of the top plate 16 is rotatably connected to an upper rotating shaft 17, and a limit frame 18 is fixedly connected to the outer middle part of the upper rotating shaft 17. A mounting block 19 is fixedly connected to the outer side of one end of the main shaft 14 away from the motor 12, and a push rod 20 is fixedly connected to one side of the lower part of the mounting block 19. The push rod 20 is located on the inner side of the limit frame 18, and a sector-shaped tooth block 21 is fixedly connected to one side of the limit frame 18. A gear 22 is installed on the top of the mounting frame 15, and a fixing column 23 is fixedly connected to the middle part of one side of the sector-shaped tooth block 21, and the fixing column 23 is fixedly connected to the outer cylinder 8.

[0026] The gear 22 is mounted on the mounting frame 15 through a bearing seat, the sector gear block 21 is meshed and connected with the gear 22, and an auxiliary groove is opened on one side of the front of the mounting box 7, and the fixing column 23 is slidably connected with the auxiliary groove.

[0027] A filter screen 33 is fixedly mounted on one side of the lower portion of the inner cylinder 9, and a liquid outlet 34 is symmetrically mounted on the lower portion of one side of the front of the outer cylinder 8. The filter screen 33 and the liquid outlet 34 are located at positions corresponding to each other, and two liquid outlets 34 are provided.

[0028] An upper telescopic rod 35 is rotatably connected to the inner upper part of the outer box body 3. One end of the upper telescopic rod 35 away from the outer box body 3 is fixedly connected to the outer cylinder 8. The upper telescopic rods 35 are symmetrically arranged on both sides of the outer cylinder 8, and there are no less than two upper telescopic rods 35.

[0029] A box door 36 is hingedly connected to the middle of one side of the front of the outer box body 3 , and the position of the box door 36 corresponds to that of the outer cylinder body 8 .

[0030] Embodiment 1: Figure 1-8As shown, a swing mechanism is provided. When in use, the box door 36 is opened, and the lithium hexafluorophosphate solution is placed inside the inner cylinder 9. The box door 36 is closed, and cooling gas is circulated into the outer box 3 through the air inlet 4 and the air outlet 5 to maintain the temperature conditions required for the precipitation of lithium hexafluorophosphate crystals. At this time, the liquid outlet 34 is in a closed state, and the motor 12 is started. The motor 12 drives the main shaft 14 and the mounting block 19 to rotate, and the mounting block 19 drives the push rod 20 to rotate. The push rod 20 pushes the limit frame 18 to move. Since the upper rotating shaft 17 limits the top end of the limit frame 18, the limit frame 18 reciprocates in an arc. The limit frame 18 is fixedly connected to the fan-shaped tooth block 21, so that the limit frame 18 drives the fan-shaped tooth block 21 to swing back and forth in an arc.

[0031] The gear 22 is adapted to the sector tooth block 21 to assist the sector tooth block 21 in swinging and supporting. The sector tooth block 21 then drives the outer cylinder 8 to swing back and forth through the fixed column 23, so that the lithium hexafluorophosphate solution inside the inner cylinder 9 is evenly precipitated, and cooperates with the protrusions on the inner side of the inner cylinder 9 to collide and break the lithium hexafluorophosphate crystals, so that the lithium hexafluorophosphate crystals will not adhere to the inner wall of the inner cylinder 9.

[0032] After a period of time, the cooling gas supply and the operation of the motor 12 are stopped, the box door 36 and the liquid outlet 34 are opened, and then the motor 12 is started to rotate. The precipitated lithium hexafluorophosphate solution passes through the filter screen 33 and the liquid outlet 34 on the inner cylinder 9, is discharged to the inside of the fixed seat 1, and falls into the inner bottom surface of the outer box 3 and the liquid discharge port 6 through the chute 24. The chute 24 is large enough, and less lithium hexafluorophosphate remains on the partition 10, which can be collected through the liquid discharge port 6. After the filtration is completed, the inner cylinder 9 is pulled out to obtain the lithium hexafluorophosphate crystals inside, and the material is taken more conveniently, which solves the problem that the lithium hexafluorophosphate solution in the device is in direct contact with the cylinder for a long time, which is easy to cause corrosion damage to the cylinder, and when the device is discharged, the interior may still contain large pieces of lithium hexafluorophosphate crystals, which is not convenient for the subsequent smooth discharge of lithium hexafluorophosphate crystals.

[0033] The cleaning mechanism is arranged below the partition 10. A slide groove 24 is opened inside the partition 10. A connecting block 25 is slidably connected inside the slide groove 24. A lower telescopic rod 27 is fixedly connected to the top of the connecting block 25. The lower telescopic rod 27 is rotatably connected to the bottom of the outer cylinder 8. The top of the cleaning brush 11 is rotatably connected to a rotating ring 28, and the rotating ring 28 is sleeved on the outer side of the connecting block 25.

[0034] The two sides of the connecting block 25 are fixedly connected with limit plates 26, which include two groups symmetrically arranged in an upper and lower direction. The limit plates 26 are fitted with the partition 10, and the inner side of the rotating circle 28 is symmetrically fixed with a clamping block 29. The lower outer side of the connecting block 25 is symmetrically provided with an arc groove 30, and the clamping block 29 is slidably connected with the arc groove 30.

[0035] An upper slot 31 and a lower slot 32 are symmetrically provided on the outer side of the lower portion of the connecting block 25. The upper slot 31 is located on the top side of the arc slot 30, and the lower slot 32 is located on the bottom side of the arc slot 30. The arc slot 30 is connected to the upper slot 31 and the lower slot 32 respectively.

[0036] Embodiment 2: Figure 9-12 As shown, a cleaning mechanism is provided. When the outer cylinder 8 swings, the outer cylinder 8 drives the lower telescopic rod 27 connected to the bottom rotation to move. Since the symmetrically arranged limit plate 26 limits the connection block 25, the connection block 25 can only move horizontally, and the connection block 25 slides inside the slide groove 24. The connection block 25 then drives the rotating circle 28 and the cleaning brush 11 at the bottom to move, so that the cleaning brush 11 scrapes the inner bottom surface of the outer box body 3, reducing the lithium hexafluorophosphate attached to the bottom surface of the outer box body 3, causing corrosion damage to the outer box body 3. Before use, the operator rotates the rotating circle 28 so that the rotating circle 28 drives the card block 29 to disengage from the lower card groove 32 at the bottom, and then slides the rotating circle 28 upward until the card block 29 is located at the position of the upper card groove 31. The rotating circle 28 drives the card block 29 to be stuck in the upper card groove 31, which is convenient for adjusting the height of the cleaning brush 11 and reducing the friction between the cleaning brush 11 and the bottom surface of the outer box body 3. When filtering is needed, the height of the cleaning brush 11 is reset downward for scraping.

[0037] Working principle: When using the device, first, Figure 1-12 As shown, when in use, the box door 36 is opened, and the operator rotates the rotating circle 28 so that the rotating circle 28 drives the card block 29 to disengage from the lower card slot 32 at the bottom, and then slides the rotating circle 28 upward until the card block 29 is located at the position of the upper card slot 31. The rotating circle 28 is rotated to drive the card block 29 to be stuck in the upper card slot 31, which is convenient for adjusting the height of the cleaning brush 11 and reducing the friction between the cleaning brush 11 and the bottom surface of the outer box body 3.

[0038] The lithium hexafluorophosphate solution is placed inside the inner cylinder 9, the box door 36 is closed, and cooling gas is circulated into the outer box 3 through the air inlet 4 and the air outlet 5 to maintain the temperature conditions required for the precipitation of lithium hexafluorophosphate crystals. At this time, the liquid outlet 34 is in a closed state, and the motor 12 is started. The motor 12 drives the main shaft 14 and the mounting block 19 to rotate, and the mounting block 19 drives the push rod 20 to rotate. The push rod 20 pushes the limit frame 18 to move. Since the upper rotating shaft 17 limits the top end of the limit frame 18, the limit frame 18 reciprocates in an arc. The limit frame 18 is fixedly connected to the fan-shaped tooth block 21, so that the limit frame 18 drives the fan-shaped tooth block 21 to swing back and forth in an arc. The gear 22 is adapted to the fan-shaped tooth block 21 to assist the fan-shaped tooth block 21 in swinging and supporting.

[0039] The fan-shaped tooth block 21 then drives the outer cylinder 8 to swing back and forth through the fixed column 23, so that the lithium hexafluorophosphate solution inside the inner cylinder 9 is uniformly precipitated, and cooperates with the convex block on the inner side of the inner cylinder 9 to collide and break the lithium hexafluorophosphate crystals, so that the lithium hexafluorophosphate crystals will not adhere to the inner wall of the inner cylinder 9. After a period of time, the cooling gas is stopped and the operation of the motor 12 is stopped, the box door 36 and the liquid outlet 34 are opened, and then the motor 12 is started to rotate. The precipitated lithium hexafluorophosphate solution passes through the filter screen 33 and the liquid outlet 34 on the inner cylinder 9 and is discharged into the interior of the fixed seat 1, and falls into the inner bottom surface of the outer box 3 and the drain port 6 through the chute 24. The chute 24 is large enough, and less lithium hexafluorophosphate remains on the partition 10, which can be collected through the drain port 6 until it is needed to be filtered, and the height of the cleaning brush 11 is reset downward to scrape it. After the filtration is completed, the inner cylinder 9 can be pulled out to obtain the lithium hexafluorophosphate crystals inside, and the material is more convenient to take.

[0040] While the outer cylinder 8 is swinging, the outer cylinder 8 drives the lower telescopic rod 27 connected to the bottom rotation to move. Since the symmetrically arranged limit plates 26 limit the connecting block 25, the connecting block 25 only moves horizontally, and the connecting block 25 slides inside the slide groove 24. The connecting block 25 then drives the rotating circle 28 and the cleaning brush 11 at the bottom to move, so that the cleaning brush 11 scrapes the inner bottom surface of the outer box 3, reducing the lithium hexafluorophosphate attached to the bottom surface of the outer box 3, which causes corrosion damage to the outer box 3.

[0041] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crystallization and separation device for lithium hexafluorophosphate, comprising a fixing seat (1) and legs (2) symmetrically fixed around the bottom of the fixing seat (1), wherein the fixing seat (1) is fixedly connected to an outer box (3) inside; It is characterized in that Also includes: An air inlet (4) is installed on one side of the top of the outer box body (3), and an air outlet (5) is installed on the other side of the top of the outer box body (3); A liquid discharge port (6) is installed in the middle of the bottom of the outer box body (3), and the outer box body (3) passes through the fixing seat (1) and is connected to the outside; The outer cylinder (8) is installed inside the outer box (3); the inner cylinder (9) is snap-connected inside the outer cylinder (8); a partition (10) is fixedly connected to the lower part of the outer box (3); a cleaning brush (11) is installed at the lower part of the partition (10); A swing mechanism is arranged on one side of the outer cylinder (8), the swing mechanism comprising a mounting box (7), a motor (12) being fixedly mounted on one side of the back of the outer box (3), a side plate (13) being symmetrically fixed inside the mounting box (7), an output end of the motor (12) passing through the outer box (3) and being fixedly connected to a main shaft (14), a mounting frame (15) being fixedly connected to the bottom of the side plate (13), and a top plate (16) being fixedly connected to the top of the side plate (13); The top of the top plate (16) is rotatably connected to an upper rotating shaft (17), the middle outer side of the upper rotating shaft (17) is fixedly connected to a limit frame (18), the outer side of one end of the main shaft (14) away from the motor (12) is fixedly connected to a mounting block (19), a lower side of the mounting block (19) is fixedly connected to a push rod (20), the push rod (20) is located on the inner side of the limit frame (18), a side of the limit frame (18) is fixedly connected to a sector tooth block (21), a gear (22) is installed on the top of the mounting frame (15), a fixing column (23) is fixedly connected to the middle of one side of the sector tooth block (21), and the fixing column (23) is fixedly connected to the outer cylinder (8); A cleaning mechanism is arranged below the partition (10); a slide groove (24) is provided inside the partition (10); a connecting block (25) is slidably connected inside the slide groove (24); a lower telescopic rod (27) is fixedly connected to the top of the connecting block (25); the lower telescopic rod (27) is rotatably connected to the bottom of the outer cylinder (8); the top of the cleaning brush (11) is rotatably connected to a rotating ring (28); and the rotating ring (28) is sleeved on the outside of the connecting block (25).

2. A crystallization and separation device for lithium hexafluorophosphate according to claim 1, characterized in that: The gear (22) is mounted on the mounting frame (15) via a bearing seat, the sector-shaped gear block (21) is meshingly connected with the gear (22), an auxiliary groove is provided on one side of the front face of the mounting box (7), and the fixing column (23) is slidably connected to the auxiliary groove.

3. A crystallization and separation device for lithium hexafluorophosphate according to claim 1, characterized in that: The two sides of the connection block (25) are fixedly connected to limit plates (26), the limit plates (26) include two groups symmetrically arranged in an upper and lower direction, the limit plates (26) are fitted with the partition plate (10), a clamping block (29) is symmetrically fixed on the inner side of the rotating circle (28), and an arc groove (30) is symmetrically opened on the outer side of the lower part of the connection block (25), and the clamping block (29) is slidably connected to the arc groove (30).

4. A crystallization and separation device for lithium hexafluorophosphate according to claim 3, characterized in that: An upper clamping groove (31) and a lower clamping groove (32) are symmetrically formed on the outer side of the lower portion of the connecting block (25); the upper clamping groove (31) is located on the top side of the arc-shaped groove (30); the lower clamping groove (32) is located on the bottom side of the arc-shaped groove (30); and the arc-shaped groove (30) is connected to the upper clamping groove (31) and the lower clamping groove (32) respectively.

5. The crystallization and separation device of lithium hexafluorophosphate according to claim 1, characterized in that: A filter screen (33) is fixedly mounted on one side of the lower portion of the inner cylinder (9), and a liquid outlet (34) is symmetrically mounted on the lower portion of one side of the front face of the outer cylinder (8), the filter screen (33) and the liquid outlet (34) are located in corresponding positions, and two liquid outlets (34) are provided.

6. The crystallization and separation device of lithium hexafluorophosphate according to claim 1, characterized in that: An upper telescopic rod (35) is rotatably connected to the inner upper portion of the outer box body (3), and one end of the upper telescopic rod (35) away from the outer box body (3) is fixedly connected to the outer cylinder (8).

7. A crystallization and separation device for lithium hexafluorophosphate according to claim 6, characterized in that: The upper telescopic rods (35) are symmetrically arranged on both sides of the outer cylinder (8), and there are no less than two upper telescopic rods (35).

8. The crystallization and separation device of lithium hexafluorophosphate according to claim 1, characterized in that: A box door (36) is hingedly connected in the middle of one side of the front face of the outer box body (3), and the position of the box door (36) corresponds to that of the outer cylinder body (8).

Images