Cooling device for preparing lithium hexafluorophosphate

Abstract

The utility model relates to the field of lithium hexafluorophosphate processing, and discloses a cooling device for preparing lithium hexafluorophosphate, which comprises a base, a reaction tank is arranged on the inner wall of the top end of the base, an air pump is arranged on the left side, close to the reaction tank, of the base, and a cooling machine is arranged on the right side, close to the reaction tank, of the base. A cooling sleeve is arranged on the outer wall of the reaction tank, a cooling assembly is arranged on the inner wall of the cooling sleeve, the bottom end of the cooling sleeve is fixedly connected to the inner wall of the top end of the base, a supporting seat is arranged at the top end of the reaction tank, and a stirring assembly is arranged on the inner wall of the supporting seat and comprises a driving motor. According to the reaction tank, the supporting seat, the stirring assembly and the moving assembly are matched for use, and the moving assembly is driven to operate when the stirring assembly works, so that the stirring assembly moves up and down in the reaction tank, the stirring range is expanded, the stirring efficiency is improved, uniform distribution of heat is further promoted, and the overall cooling efficiency is remarkably improved; and the cooling time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of lithium hexafluorophosphate processing, in particular to a cooling device for preparing lithium hexafluorophosphate. Background Art

[0002] Lithium hexafluorophosphate is an important lithium-ion battery electrolyte material. Its performance and quality have a key impact on the performance and safety of the battery. In the preparation process of lithium hexafluorophosphate, it is crucial to control the reaction temperature to ensure the purity and quality of the product.

[0003] A search revealed Chinese patent publication number CN 217154703U, which discloses a cooling device for processing lithium hexafluorophosphate. The device comprises a reaction vessel and an equipment box. A cooling jacket is attached to the front of the reaction vessel, with a fixing mechanism provided between the jacket and the reaction vessel. An annular cooling pipe is wound around the inner wall of the reaction vessel. Multiple air holes are evenly spaced from the side of the jacket's top, each of which is secured with a dust screen. This device utilizes an air pump and a refrigerator. The air generated by the air pump is passed through the air holes in the jacket, while the coolant generated by the refrigerator flows into the annular cooling pipe for circulation. This allows air cooling and water cooling to effectively cool the reaction vessel, effectively ensuring cooling.

[0004] In the above technology, although the driving motor is used to drive the stirring shaft to rotate, causing the lithium hexafluorophosphate inside the reaction tank to shake, thereby avoiding local heat dissipation and affecting the heat dissipation efficiency, the stirring blades in the above device are horizontally staggered. During the stirring process, the area close to the rotation trajectory of the blades may be subjected to a stronger stirring effect, while the area far from the blades is relatively weaker, resulting in uneven mixing of the materials and heat transfer, which may affect the overall heat dissipation effect to a certain extent. Therefore, a cooling and temperature reduction device for lithium hexafluorophosphate preparation is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a cooling and temperature reduction device for the preparation of lithium hexafluorophosphate, which aims to improve the problem in the prior art that "during the stirring process, there is uneven material mixing and heat transfer, the stirring is strong in the area close to the blades, and weak in the area far away, which may affect the overall heat dissipation effect."

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cooling and temperature reduction device for the preparation of lithium hexafluorophosphate, comprising a base, a reaction tank is provided on the inner wall of the top end of the base, an air pump is provided on the left side of the base near the reaction tank, a cooler is provided on the right side of the base near the reaction tank, a cooling jacket is provided on the outer wall of the reaction tank, a cooling assembly is provided on the inner wall of the cooling jacket, the bottom end of the cooling jacket is fixedly connected to the inner wall of the top end of the base, a support seat is provided on the top end of the reaction tank, a stirring assembly is provided on the inner wall of the support seat, the stirring assembly comprises a driving motor, the bottom end of the driving motor is fixedly connected to the top end of the support seat, the bottom end of the driving motor output shaft is fixedly connected to a connecting rod, a rotating rod 1 is provided on the bottom end of the connecting rod, and the outer wall of the bottom end of the connecting rod passes through and is slidably connected to the inner wall of the top end of the rotating rod 1.

[0007] As a further description of the above technical solution:

[0008] The upper outer wall of the rotating rod is fixedly connected to gear 1, the outer wall of the top end of the gear 1 is provided with a stabilizing block, the right side of the gear 1 is meshed with gear 2, the right side of the gear 2 is rotatably connected to the inner wall of the stabilizing block, and a moving component is provided on the right side of the gear 2.

[0009] As a further description of the above technical solution:

[0010] The left side of the gear 2 is meshed with the gear 3, the outer wall of the bottom end of the gear 3 is rotatably connected to the inner wall of the stabilizing block, the bottom end of the gear 3 is fixedly connected to the rotating rod 2, and the outer wall of the rotating rod 1 passes through and is rotatably connected to the gear 3 and the inner wall of the rotating rod 2.

[0011] As a further description of the above technical solution:

[0012] The outer walls of the first rotating rod and the second rotating rod are provided with stirring blades.

[0013] As a further description of the above technical solution:

[0014] The moving assembly includes a turntable, the left side of which is fixedly connected to the right side of gear 2, a sliding column is fixedly connected to the right side of the turntable at a position deviating from the center of the circle, a guide plate is fixedly connected to the inner wall of the support seat near the right side of the turntable, and the outer wall of the right side of the sliding column is slidably connected to the inner wall of the guide plate.

[0015] As a further description of the above technical solution:

[0016] The cooling assembly includes a water cooling pipe, which is arranged on the inner wall of the cooling jacket. A ventilation slot is opened through the top of the cooling jacket. The outer wall of the water cooling pipe is arranged on the inner wall of the ventilation slot. The inner wall of the ventilation slot is fixedly connected with a bump.

[0017] As a further description of the above technical solution:

[0018] The protrusions are provided in multiple groups, the ventilation slots are provided in multiple groups, and the ventilation slots are arranged in a circular array with the center line of the cooling jacket as the center point.

[0019] As a further description of the above technical solution:

[0020] A slide groove is provided at the top of the cooling jacket, a cover plate is rotatably connected to the inner wall of the slide groove, a through hole is provided at the top of the cover plate, and the through hole has the same size as the ventilation groove.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, by cooperating with the support base, the stirring assembly and the moving assembly, the stirring assembly drives the moving assembly to operate when the stirring assembly is working, thereby causing the stirring assembly to move up and down in the reaction tank, thereby expanding the stirring range and stirring efficiency, further promoting the uniform distribution of heat, significantly improving the overall cooling efficiency, and shortening the cooling time.

[0023] 2. In the present invention, by using the cooling assembly and the cooling jacket in combination, when cooling the reaction tank, a portion of the water-cooling pipe is arranged in the ventilation groove in the cooling jacket, and then by providing a protrusion, the contact area of ​​the airflow when passing through the ventilation groove is increased, thereby improving the heat dissipation efficiency of the water-cooling pipe, thereby improving the cooling efficiency of the water-cooling pipe and the lithium hexafluorophosphate in the reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 This is a front perspective cross-sectional diagram of the reaction tank in the present invention;

[0026] Figure 3 This is a schematic diagram of the disassembled three-dimensional structure of the mobile component in the present utility model;

[0027] Figure 4 This is a partial cross-sectional diagram of the front three-dimensional structure of the base in the present invention;

[0028] Figure 5 It is a front view three-dimensional structural cross-sectional diagram of the cooling jacket in the present invention.

[0029] Legend:

[0030] 1. Base; 2. Reactor; 3. Cooling jacket; 4. Support base; 51. Drive motor; 52. Connecting rod; 53. Turning rod 1; 54. Gear 1; 55. Stabilizing block; 56. Gear 2; 57. Gear 3; 58. Turning rod 2; 61. Turntable; 62. Sliding column; 63. Guide plate; 71. Ventilation slot; 72. Water cooling pipe; 73. Bump; 74. Cover plate. DETAILED DESCRIPTION

[0031] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a cooling and temperature reduction device for preparing lithium hexafluorophosphate, comprising a base 1 for stably supporting a reaction tank 2, a reaction tank 2 being provided on the inner wall of the top of the base 1, and a main container for containing lithium hexafluorophosphate for reaction and cooling, an air pump being provided on the left side of the base 1 near the reaction tank 2, the exhaust end of the air pump being connected to the inside of the base 1, and the inner wall of the base 1 being connected to multiple groups of ventilation slots 71 on a cooling jacket 3, which can provide gas power for assisting the cooling of the reaction tank 2, a cooler being provided on the right side of the base 1 near the reaction tank 2, the cooler being an existing structure, and being used to cool the water-cooled medium, thereby cooling the lithium hexafluorophosphate in the reaction tank 2, a cooling jacket 3 being provided on the outer wall of the reaction tank 2, and the cooling jacket 3 being attached to the outer wall of the reaction tank 2, and cooling the lithium hexafluorophosphate in the reaction tank 2 through the cooling component.

[0033] Furthermore, a cooling assembly is provided on the inner wall of the cooling jacket 3, and the bottom end of the cooling jacket 3 is fixedly connected to the inner wall of the top end of the base 1. A support seat 4 for supporting the driving motor 51 is provided on the top end of the reaction tank 2, and a stirring assembly is provided on the inner wall of the support seat 4. The stirring assembly includes a driving motor 51, which serves as a power source for the stirring assembly and drives the connecting rod 52 to rotate. The bottom end of the driving motor 51 is fixedly connected to the top end of the support seat 4, and the bottom end of the output shaft of the driving motor 51 is fixedly connected to a connecting rod 52 for driving the rotating rod 53 to rotate. The connecting rod 52 passes through the support seat 4, and the outer wall is provided with a convex strip. The bottom end of the connecting rod 52 is provided with a rotating rod 53, which drives the stirring blade to rotate, stirs the material in the reaction tank 2, and drives the gear 54 to rotate at the same time. The outer wall of the bottom end of the connecting rod 52 passes through and is slidably connected to the inner wall of the top end of the rotating rod 53.

[0034] Reference Figure 2 and Figure 3The outer wall of the upper side of the rotating rod 53 is fixedly connected to the gear 1 54, which cooperates with the gear 2 56 and the gear 3 57 to realize power transmission. The outer wall of the top of the gear 1 54 is provided with a stabilizing block 55 to provide stable support and positioning for the operation of the gear 1 54, the gear 2 56 and the gear 3 57. The right side of the gear 1 54 is engaged with the gear 2 56, which transmits power through the engagement with the gear 1 54 and the gear 3 57 and serves as the operating power of the moving component through rotation. The right side of the gear 2 56 penetrates and is rotatably connected to the inner wall of the stabilizing block 55. A moving component is provided on the right side of the gear 2 56 to drive the stabilizing block 55 to move up and down.

[0035] Furthermore, gear three 57 is engaged with the left side of gear two 56, driving rotating rod two 58 to rotate, and working together with rotating rod one 53 to enhance the stirring effect. The outer wall of the bottom end of gear three 57 is rotatably connected to the inner wall of the stabilizing block 55, and the bottom end of gear three 57 is fixedly connected to rotating rod two 58. Rotating rod two 58 rotates in the opposite direction, thereby avoiding the formation of a single flow pattern of the material during the stirring process, which can better mix and disperse the material, improve the cooling effect, prevent local overheating and material deposition, and at the same time, the reverse rotation also helps to distribute the heat more evenly and quickly, thereby further improving the efficiency and quality of the entire cooling process. The outer wall of rotating rod one 53 passes through and is rotatably connected to the inner wall of gear three 57 and rotating rod two 58. The outer walls of rotating rod one 53 and rotating rod two 58 are provided with stirring blades. As rotating rod one 53 and rotating rod two 58 rotate in opposite directions, the material in the reaction tank 2 is stirred, which can effectively mix the material fully, make the heat more evenly transferred in the material, promote the heat exchange between the material and the cooling jacket 3, and accelerate the cooling speed.

[0036] Reference Figure 1 - Figure 3 The moving assembly includes a turntable 61. The left side of the turntable 61 is fixedly connected to the right side of the gear 2 56. As the gear 2 56 rotates, it drives the slide post 62 to make a circular motion. The right side of the turntable 61 is fixedly connected to the slide post 62 at a position deviating from the center of the circle. Driven by the turntable 61, it slides along the guide plate 63, thereby realizing the up and down movement of the stirring assembly. The inner wall of the support seat 4 near the right side of the turntable 61 is fixedly connected to the guide plate 63. The guide plate 63 is horizontally arranged, which can limit the movement trajectory of the slide post 62 and guide the stirring assembly to move up and down. The outer wall of the right side of the slide post 62 is slidably connected to the inner wall of the guide plate 63.

[0037] Reference Figure 1 、 Figure 4 and Figure 5The cooling component includes a water-cooling pipe 72. The water inlet pipe and the water outlet pipe of the water-cooling pipe 72 are connected to the cooler. The cooling medium flowing inside can absorb the heat of the outer wall of the reaction tank 2, realize efficient heat exchange, thereby reducing the temperature of the material in the reaction tank 2 and achieving the purpose of water cooling. The water-cooling pipe 72 is arranged on the inner wall of the cooling jacket 3 to ensure full contact with the reaction tank 2. A ventilation groove 71 is opened through the top of the cooling jacket 3 to facilitate air circulation and enhance the heat dissipation effect. It cooperates with the water-cooling pipe 72 to further improve the cooling efficiency. The outer wall of the water-cooling pipe 72 is arranged on the inner wall of the ventilation groove 71, which can dissipate heat to the water-cooling pipe 72 when the air flow passes through the ventilation groove 71. A protrusion 73 is fixedly connected to the inner wall of the ventilation groove 71.

[0038] Furthermore, there are multiple groups of bumps 73, which can guide airflow and increase the heat dissipation area, thereby improving the heat dissipation efficiency and thus improving the cooling efficiency of the equipment. There are multiple groups of ventilation slots 71, and the multiple groups of ventilation slots 71 are arranged in a circular array with the center line of the cooling jacket 3 as the center point. A slide groove is provided at the top of the cooling jacket 3, and a cover plate 74 is rotatably connected to the inner wall of the slide groove. A through hole is provided at the top of the cover plate 74, and the through hole is the same size as the ventilation slot 71. The cover plate 74 can control the opening and closing of the ventilation slot 71. Closing the ventilation slot 71 when the device is not in use can prevent dust, impurities, etc. from entering, and also help to keep the inside of the cooling jacket 3 clean and dry.

[0039] Working principle: When in use, during the preparation process of lithium hexafluorophosphate, lithium hexafluorophosphate is first added to the reaction tank 2. At this time, the air pump on the base 1 is started to provide gas power. The gas is connected to the ventilation groove 71 on the cooling jacket 3 through the inside of the base 1. At the same time, the cooling jacket 3 is attached to the outer wall of the reaction tank 2. The cooling medium flows in the water-cooling pipe 72 inside it. Heat exchange is carried out through contact with the outer wall of the reaction tank 2 to reduce the temperature of the materials in the reaction tank 2. The water-cooling pipe 72 cooperates with the protrusion 73 to guide the airflow and increase the heat dissipation area of ​​the ventilation groove 71, thereby further improving the cooling efficiency.

[0040] During the cooling process, the drive motor 51 in the support base 4 is started, and its output shaft drives the connecting rod 52 to rotate, and the connecting rod 52 drives the rotating rod 1 53 to rotate, thereby driving the gear 1 54 on the rotating rod 1 53 to rotate, and the gear 1 54 is engaged with the gear 2 56 and the gear 3 57 and rotates on the inner wall of the stabilizing block 55. The gear 3 57 rotates under the meshing action of the gear 2 56 and drives the rotating rod 2 58 to rotate in the opposite direction, so that the lithium hexafluorophosphate inside the reaction tank 2 is stirred by the stirring blades on the rotating rod 2 58 and the rotating rod 1 53, so that it is fully stirred, the heat is evenly distributed, the heat exchange between the material and the cooling jacket 3 is promoted, the cooling speed is accelerated, local overheating and material deposition are prevented, and the cooling effect and the efficiency and quality of the cooling process are improved.

[0041] At the same time, the rotation of gear 2 56 drives the turntable 61 on the right to rotate, and the sliding column 62 on the turntable 61 that deviates from the center of the circle slides under the restriction of the guide plate 63, so that the stabilizing block 55 reciprocates up and down, and the inner wall of the rotating rod 1 53 slides on the outer wall of the connecting rod 52, thereby driving the entire stirring assembly to move up and down, expanding the stirring range and stirring efficiency, further promoting the uniform distribution of heat, significantly improving the overall cooling efficiency, and shortening the cooling time.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cooling device for preparing lithium hexafluorophosphate, comprising a base (1), characterized in that: A reaction tank (2) is provided on the inner wall of the top of the base (1), an air pump is provided on the left side of the base (1) close to the reaction tank (2), a cooler is provided on the right side of the base (1) close to the reaction tank (2), a cooling jacket (3) is provided on the outer wall of the reaction tank (2), a cooling assembly is provided on the inner wall of the cooling jacket (3), the bottom end of the cooling jacket (3) is fixedly connected to the inner wall of the top of the base (1), a support seat (4) is provided on the top of the reaction tank (2), a stirring assembly is provided on the inner wall of the support seat (4), and the stirring assembly includes a driving motor (51), the bottom end of the driving motor (51) is fixedly connected to the top of the support seat (4), the bottom end of the output shaft of the driving motor (51) is fixedly connected to a connecting rod (52), the bottom end of the connecting rod (52) is provided with a rotating rod (53), and the outer wall of the bottom end of the connecting rod (52) is slidably connected to the inner wall of the top end of the rotating rod (53).

2. A cooling device for preparing lithium hexafluorophosphate according to claim 1, characterized in that: The outer wall on the upper side of the rotating rod 1 (53) is fixedly connected to the gear 1 (54), the outer wall on the top end of the gear 1 (54) is provided with a stabilizing block (55), the right side of the gear 1 (54) is meshed with the gear 2 (56), the right side of the gear 2 (56) is connected to the inner wall of the stabilizing block (55) through the rotation, and the right side of the gear 2 (56) is provided with a moving component.

3. A cooling device for preparing lithium hexafluorophosphate according to claim 2, characterized in that: The left side of the gear 2 (56) is meshed with the gear 3 (57), the outer wall of the bottom end of the gear 3 (57) is rotatably connected to the inner wall of the stabilizing block (55), the bottom end of the gear 3 (57) is fixedly connected to the rotating rod 2 (58), and the outer wall of the rotating rod 1 (53) passes through and is rotatably connected to the inner wall of the gear 3 (57) and the rotating rod 2 (58).

4. A cooling device for preparing lithium hexafluorophosphate according to claim 3, characterized in that: The outer walls of the rotating rod 1 (53) and the rotating rod 2 (58) are provided with stirring blades.

5. A cooling device for preparing lithium hexafluorophosphate according to claim 2, characterized in that: The moving assembly includes a turntable (61), the left side of the turntable (61) is fixedly connected to the right side of the gear 2 (56), the right side of the turntable (61) is fixedly connected to a sliding column (62) at a position deviated from the center of the circle, the inner wall of the support seat (4) close to the right side of the turntable (61) is fixedly connected to a guide plate (63), and the outer wall of the right side of the sliding column (62) is slidably connected to the inner wall of the guide plate (63).

6. A cooling device for preparing lithium hexafluorophosphate according to claim 1, characterized in that: The cooling assembly includes a water cooling pipe (72), the water cooling pipe (72) is arranged on the inner wall of the cooling jacket (3), a ventilation groove (71) is opened through the top of the cooling jacket (3), the outer wall of the water cooling pipe (72) is arranged on the inner wall of the ventilation groove (71), and the inner wall of the ventilation groove (71) is fixedly connected with a protrusion (73).

7. A cooling device for preparing lithium hexafluorophosphate according to claim 6, characterized in that: The protrusions (73) are provided in multiple groups, the ventilation slots (71) are provided in multiple groups, and the multiple groups of ventilation slots (71) are arranged in a circular array with the center line of the cooling jacket (3) as the center point.

8. The cooling device for preparing lithium hexafluorophosphate according to claim 1, characterized in that: A slide groove is provided at the top of the cooling jacket (3), and a cover plate (74) is rotatably connected to the inner wall of the slide groove. A through hole is provided through the top of the cover plate (74), and the through hole has the same size as the ventilation groove (71).

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