High-purity lithium hexafluorophosphate concentrating and rectifying device
By using two-way stirring components and impurity removal components in the lithium hexafluorophosphate concentration and rectification device, the problems of uneven material mixing and impurities in traditional devices are solved, and more efficient concentrated and higher purity products are achieved.
Patent Information
- Application Number
- CN202421868181.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The traditional lithium hexafluorophosphate concentration and rectification device has unidirectional stirring limitations during the stirring process, resulting in uneven mixing of materials, affecting the concentration effect and product consistency. At the same time, the impurities in the raw materials cannot be melted at high temperature, affecting the purity of the solution.
A high-purity lithium hexafluorophosphate concentration and rectification device is designed, using a bidirectional stirring assembly and a decompression assembly. The bidirectional stirring assembly realizes the full and uniform mixing of the materials in the kettle through the staggered distribution of the stirring plate and the stirring page. The impurity removal assembly effectively blocks and discharges impurities through the cooperation of the casing, filter plate and clamps.
The uniform mixing of materials in the kettle is achieved, the concentration efficiency and product quality stability is improved, and the purity of lithium hexafluorophosphate solution is improved through effective decomposition removal.
Smart Images
Figure CN222918136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of lithium hexafluorophosphate, in particular to a high-purity lithium hexafluorophosphate concentration and rectification device. Background Art
[0002] In the chemical industry, especially in the production process of high-purity lithium hexafluorophosphate, concentration and rectification is a key link. The concentration and rectification device usually consists of components such as a rectification column, a condenser, a feed pump, and a concentration kettle. Among them, the concentration kettle is mainly used for concentrating the solution. By heating, evaporation, etc., the solvent content is reduced, and the solute concentration is increased. When traditional lithium hexafluorophosphate is concentrated in the concentration kettle, stirring operations are usually required to ensure sufficient mixing of the materials, improve the concentration efficiency and product quality.
[0003] However, traditional stirring devices have obvious limitations. They can often only perform one-way stirring, which leads to the problem of uneven mixing of the materials in the kettle. Under the action of one-way stirring, local concentration differences are easily formed in the materials, affecting the concentration effect and product consistency.
[0004] At the same time, in the traditional production process of lithium hexafluorophosphate, some impurities in the raw materials cannot be melted at high temperature, and the concentrated lithium hexafluorophosphate solution will contain impurities, which will affect the purity of the lithium hexafluorophosphate solution. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides a high-purity lithium hexafluorophosphate concentration and rectification device, aiming to improve the problem that traditional stirring devices can usually only perform one-way stirring, which easily causes uneven mixing of the materials in the kettle, resulting in local concentration differences and affecting the concentration effect and product consistency.
[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A high-purity lithium hexafluorophosphate concentration and rectification device, including a concentration kettle, the outer wall of the concentration kettle is fixedly connected with a heat preservation sleeve, the upper surface of the concentration kettle penetrates and is fixedly connected with a feed pipe, the lower surface of the concentration kettle penetrates and is fixedly connected with a discharge pipe, an impurity removal component is arranged on the outer wall of the discharge pipe, a valve is arranged in the middle section of the discharge pipe, a stirring component is arranged inside the concentration kettle, the stirring component includes a control box, a motor is arranged on the upper surface of the concentration kettle, the output shaft of the motor is fixedly connected with a rotating shaft, a bevel gear one is fixedly connected to the top of the outer wall of the rotating shaft, a bevel gear two is rotatably connected to the right inner wall of the control box, a round rod is rotatably connected to the lower surface of the control box, and a bevel gear three is fixedly connected to the upper surface of the round rod.
[0007] As a further description of the above technical solution:
[0008] The stirring assembly further includes a stirring plate. A U-shaped plate is fixedly connected to the lower surface of the rotating shaft, and stirring blades are fixedly connected to the right surface of the U-shaped plate.
[0009] As a further description of the above technical solution:
[0010] The impurity removal assembly includes a sleeve. A first through groove is formed in the right surface of the sleeve, a second through groove is formed in the left surface of the discharge pipe, a filter plate is fixedly connected to the inner wall of the discharge pipe, a clamping block is elastically connected to the inner wall of the sleeve through a compression spring, and a clamping groove is formed in the front surface of the discharge pipe.
[0011] As a further description of the above technical solution:
[0012] The upper surface of the control box is fixedly connected to the inner wall of the top end of the concentration kettle. The rotating shaft penetrates and is rotatably connected to the upper surface of the control box, and the rotating shaft penetrates and is rotatably connected to the upper surface of the concentration kettle.
[0013] As a further description of the above technical solution:
[0014] The first bevel gear and the second bevel gear are meshed, the second bevel gear and the third bevel gear are meshed, the rotating shaft penetrates the upper surface of the third bevel gear, and the rotating shaft penetrates and is rotatably connected to the lower surface of the round rod.
[0015] As a further description of the above technical solution:
[0016] The stirring plate is fixedly connected to the outer wall of the round rod, and the stirring blades and the stirring plate are longitudinally staggered.
[0017] As a further description of the above technical solution:
[0018] The sleeve is rotatably connected to the outer wall of the discharge pipe. The sleeve is located below the valve. The filter plate is arranged in an inclined shape. Filter holes are formed in the upper surface of the filter plate, and the rear surface of the clamping block is arc-shaped.
[0019] As a further description of the above technical solution:
[0020] The clamping block penetrates and is slidably connected to the rear surface of the sleeve. One end of the compression spring is fixedly connected to the inner wall of the front side of the sleeve, the other end of the compression spring is fixedly connected to the front surface of the clamping block, and the clamping block is inserted into the inner wall of the clamping groove.
[0021] The utility model has the following beneficial effects:
[0022] 1. In the present utility model, through the cooperation of the stirring assembly, the stirring plate and the stirring blades can stir in opposite directions, achieving the effect of two-way stirring, enabling the lithium hexafluorophosphate in the kettle to be fully and evenly mixed. This has certain improvements in both the uniformity of material heating and the consistency of chemical reactions, thereby improving the concentration efficiency and the stability of product quality.
[0023] 2. In the present utility model, through the cooperation of the impurity removal assembly, the impurities in the lithium hexafluorophosphate solution can be blocked, and the blocked impurities can be discharged from the first through groove by rotating the sleeve, achieving the impurity removal effect, improving the solution purity, and enhancing the concentration quality of lithium hexafluorophosphate. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a front view of the three-dimensional structure of the overall device in the present utility model;
[0025] Figure 2 is a sectional view of the three-dimensional structure of the overall device in the present utility model;
[0026] Figure 3 is a sectional view of the three-dimensional structure of the control box in the present utility model;
[0027] Figure 4 is a sectional view of the three-dimensional structure of the discharge pipe and the sleeve in the present utility model.
[0028] LEGEND DESCRIPTION:
[0029] 1. Concentration kettle; 2. Heat preservation sleeve; 3. Feed pipe; 4. Discharge pipe; 51. Sleeve; 52. Filter plate; 53. Compression spring; 54. Clamping block; 501. First through groove; 502. Second through groove; 503. Card slot; 6. Valve; 71. Control box; 72. Motor; 73. Rotating shaft; 74. First bevel gear; 75. Second bevel gear; 76. Third bevel gear; 77. Round rod; 78. Stirring plate; 79. U-shaped plate; 711. Stirring blade. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0031] Refer to Figure 1 - Figure 3, an embodiment provided by the present utility model: a high-purity lithium hexafluorophosphate concentration and rectification device, including a concentration kettle 1. The concentration kettle 1 is prior art and can be realized by those skilled in the art. Since it is prior art, it will not be described in detail in this case. A heat preservation sleeve 2 is fixedly connected to the outer wall of the concentration kettle 1. The heat preservation sleeve 2 can reduce the heat consumption inside the concentration kettle 1. A feed pipe 3 penetrates and is fixedly connected to the upper surface of the concentration kettle 1. The feed pipe 3 is provided with a pipe cap to prevent impurities from entering. The lithium hexafluorophosphate raw material and other ingredients are added from the feed pipe 3. The pipe cap is provided with a ventilation hole, and the vapor generated during the concentration process can be discharged. A discharge pipe 4 penetrates and is fixedly connected to the lower surface of the concentration kettle 1. After the lithium hexafluorophosphate concentration is completed, it is discharged from the discharge pipe 4. An impurity removal component is provided on the outer wall of the discharge pipe 4. The impurity removal component can screen out the particulate matter in the lithium hexafluorophosphate solution. A valve 6 is provided in the middle section of the discharge pipe 4. The valve 6 can control the opening and closing of the discharge pipe 4. The valve 6 is prior art and can be realized by those skilled in the art. Since it is prior art, it will not be described in detail in this case. A stirring component is provided inside the concentration kettle 1. The stirring component can stir the lithium hexafluorophosphate raw material bidirectionally. The stirring component includes a control box 71. A motor 72 is provided on the upper surface of the concentration kettle 1. The output shaft of the motor 72 is fixedly connected to a rotating shaft 73. The motor 72 is prior art and can be realized by those skilled in the art. Since it is prior art, it will not be described in detail in this case. Starting the motor 72 can drive the rotating shaft 73 to rotate. A bevel gear one 74 is fixedly connected to the top end of the outer wall of the rotating shaft 73. The rotation of the rotating shaft 73 will drive the bevel gear one 74 to rotate. A bevel gear two 75 is rotatably connected to the right inner wall of the control box 71. A round rod 77 is rotatably connected to the lower surface of the control box 71. A bevel gear three 76 is fixedly connected to the upper surface of the round rod 77. The round rod 77 and the bevel gear three 76 will rotate synchronously. The control box 71 provides support for the round rod 77.
[0032] Refer to Figure 1 - Figure 3 , the stirring component further includes a stirring plate 78. A U-shaped plate 79 is fixedly connected to the lower surface of the rotating shaft 73. A stirring blade 711 is fixedly connected to the right surface of the U-shaped plate 79. The U-shaped plate 79 will drive the stirring blade 711 to rotate.
[0033] Refer to Figure 1 、 Figure 2 、 Figure 4, the impurity removal component includes a sleeve 51. The inner wall of the sleeve 51 is made of rubber material, which can ensure the seal between the sleeve 51 and the discharge pipe 4. A first through groove 501 is formed on the right surface of the sleeve 51, and a second through groove 502 is formed on the left surface of the discharge pipe 4. The first through groove 501 and the second through groove 502 fit together. When the sleeve 51 rotates 180 degrees, the first through groove 501 and the second through groove 502 will be aligned. A filter plate 52 is fixedly connected to the inner wall of the discharge pipe 4. A clamping block 54 is elastically connected to the inner wall of the sleeve 51 through a compression spring 53. A clamping groove 503 is formed on the front surface of the discharge pipe 4. The clamping block 54 and the clamping groove 503 fit together.
[0034] Refer to Figure 1 - Figure 3 , the upper surface of the control box 71 is fixedly connected to the inner wall of the top end of the concentration kettle 1. The rotating shaft 73 passes through and is rotatably connected to the upper surface of the control box 71. The outer wall of the rotating shaft 73 is in contact with the control box 71, which can prevent the infiltration of lithium hexafluorophosphate solution. The rotating shaft 73 passes through and is rotatably connected to the upper surface of the concentration kettle 1.
[0035] Refer to Figure 1 - Figure 3 , the first bevel gear 74 and the second bevel gear 75 are meshed, and the second bevel gear 75 and the third bevel gear 76 are meshed. When the first bevel gear 74 rotates, under the action of the second bevel gear 75, the third bevel gear 76 will rotate in the opposite direction. The rotating shaft 73 passes through the upper surface of the third bevel gear 76. The rotating shaft 73 passes through and is rotatably connected to the lower surface of the round rod 77. The outer wall of the rotating shaft 73 is in contact with the inner wall of the round rod 77.
[0036] Refer to Figure 1 - Figure 3 , the stirring plate 78 is fixedly connected to the outer wall of the round rod 77. When the round rod 77 rotates, it will drive the stirring plate 78 to rotate. The stirring blades 711 and the stirring plate 78 are longitudinally staggered.
[0037] Refer to Figure 1 、 Figure 2 、 Figure 4 , the sleeve 51 is rotatably connected to the outer wall of the discharge pipe 4. The sleeve 51 is located below the valve 6. The filter plate 52 is arranged in an inclined shape. The blocked impurities will slide along the inclined surface of the filter plate 52. Filter holes are formed on the upper surface of the filter plate 52. The pore diameter is relatively small. The lithium hexafluorophosphate solution can pass through, and the impurities will be blocked. The rear surface of the clamping block 54 is in an arc shape. By squeezing the arc surface of the clamping block 54, the clamping block 54 will move forward.
[0038] Refer to Figure 1 、 Figure 2 、 Figure 4, the clamping block 54 penetrates and is slidably connected to the rear surface of the sleeve 51. One end of the compression spring 53 is fixedly connected to the inner wall of the front side of the sleeve 51, and the other end of the compression spring 53 is fixedly connected to the front surface of the clamping block 54. The clamping block 54 is inserted into the inner wall of the card slot 503. The forward-moving clamping block 54 will squeeze the compression spring 53 to generate a reaction force and will disengage from the card slot 503 to release the limit. Rotating the sleeve 51 can cause the arc surface of the clamping block 54 to be squeezed. There are two groups of card slots 503. After the clamping block 54 rotates 180 degrees, it will align with the other group of card slots 503.
[0039] Working principle: When this device is in use, first open the pipe cover and add the lithium hexafluorophosphate raw material and the rest of the ingredients into the concentration kettle 1 from the feed pipe 3. After the raw materials are added, cover the pipe cover to prevent impurities from entering.
[0040] Then start the motor 72 to drive the rotation of the rotating shaft 73. When the rotating shaft 73 rotates, it will drive the rotation of the first bevel gear 74. Since the first bevel gear 74 meshes with the second bevel gear 75, under the driving action of the second bevel gear 75, the third bevel gear 76 meshing with the second bevel gear 75 will rotate in the opposite direction to the first bevel gear 74. The third bevel gear 76 will drive the round rod 77 to rotate in the opposite direction, and the round rod 77 will drive the stirring plate 78 to rotate in the opposite direction. The rotating shaft 73 will drive the U-shaped plate 79 and the stirring blade 711 to rotate forward, so as to realize the two-way stirring of the lithium hexafluorophosphate raw material and the rest of the ingredients and make them fully mixed.
[0041] The heat preservation sleeve 2 on the outer wall of the concentration kettle 1 can reduce the internal heat consumption and help improve the concentration efficiency.
[0042] After concentration is completed, open the valve 6. The lithium hexafluorophosphate solution flows through the discharge pipe 4. When the lithium hexafluorophosphate solution passes through the filter plate 52, the lithium hexafluorophosphate solution can pass through, and particulate impurities will be blocked. The filter plate 52 is inclined. The blocked impurities will slide along its inclined surface. When the impurities need to be discharged, rotate the sleeve 51. The arc surface of the clamping block 54 is squeezed. The clamping block 54 moves forward and squeezes the compression spring 53 to generate a reaction force. The clamping block 54 disengages from the current card slot 503 to release the limit. When the sleeve 51 rotates 180 degrees, the clamping block 54 aligns with the other group of card slots 503. At this time, the first through groove 501 and the second through groove 502 are also aligned, and the blocked impurities can be discharged from the first through groove 501.
[0043] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A high-purity lithium hexafluorophosphate concentration and distillation device, comprising a concentration kettle (1), characterized in that: The outer wall of the concentration kettle (1) is fixedly connected to a heat-insulating sleeve (2); the upper surface of the concentration kettle (1) is penetrated by and fixedly connected to a feed pipe (3); the lower surface of the concentration kettle (1) is penetrated by and fixedly connected to a discharge pipe (4); the outer wall of the discharge pipe (4) is provided with an impurity removal component; the middle section of the discharge pipe (4) is provided with a valve (6); the interior of the concentration kettle (1) is provided with a stirring component, and the stirring component comprises a control box (71); the upper surface of the concentration kettle (1) is provided with a motor (72); the output shaft of the motor (72) is fixedly connected to a rotating shaft (73); the top end of the outer wall of the rotating shaft (73) is fixedly connected to a bevel gear 1 (74); the inner wall on the right side of the control box (71) is rotatably connected to a bevel gear 2 (75); the lower surface of the control box (71) is rotatably connected to a round rod (77); the upper surface of the round rod (77) is fixedly connected to a bevel gear 3 (76).
2. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 1, characterized in that: The stirring assembly further comprises a stirring plate (78), the lower surface of the rotating shaft (73) is fixedly connected to a U-shaped plate (79), and the right surface of the U-shaped plate (79) is fixedly connected to a stirring blade (711).
3. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 1, characterized in that: The impurity removal component comprises a sleeve (51), a right surface of the sleeve (51) is provided with a first through groove (501), a left surface of the discharge pipe (4) is provided with a second through groove (502), an inner wall of the discharge pipe (4) is fixedly connected with a filter plate (52), an inner wall of the sleeve (51) is elastically connected with a clamping block (54) via a compression spring (53), and a front surface of the discharge pipe (4) is provided with a clamping groove (503).
4. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 1, characterized in that: The upper surface of the control box (71) is fixedly connected to the inner wall of the top end of the concentration kettle (1), and the rotating shaft (73) passes through and is rotatably connected to the upper surface of the control box (71). The rotating shaft (73) passes through and is rotatably connected to the upper surface of the concentration kettle (1).
5. A high-purity lithium hexafluorophosphate concentration and distillation device according to claim 1, characterized in that: The bevel gear 1 (74) is meshed with the bevel gear 2 (75), the bevel gear 2 (75) is meshed with the bevel gear 3 (76), the rotating shaft (73) passes through the upper surface of the bevel gear 3 (76), and the rotating shaft (73) passes through and is rotatably connected to the lower surface of the round rod (77).
6. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 2, characterized in that: The stirring plate (78) is fixedly connected to the outer wall of the round rod (77), and the stirring leaves (711) and the stirring plate (78) are staggered in the longitudinal direction.
7. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 3, characterized in that: The sleeve (51) is rotatably connected to the outer wall of the discharge pipe (4), the sleeve (51) is located below the valve (6), the filter plate (52) is arranged in an inclined shape, the upper surface of the filter plate (52) is provided with filter holes, and the rear surface of the clamping block (54) is arranged in an arc surface.
8. A high-purity lithium hexafluorophosphate concentration and rectification device according to claim 3, characterized in that: The clamping block (54) penetrates through and is slidably connected to the rear surface of the sleeve (51); one end of the compression spring (53) is fixedly connected to the inner wall of the front side of the sleeve (51); the other end of the compression spring (53) is fixedly connected to the front surface of the clamping block (54); and the clamping block (54) is plugged into the inner wall of the clamping slot (503).