A reactor for preparing lithium battery electrolyte

Abstract

The present invention belongs to the technical field of lithium battery electrolyte preparation equipment, specifically a reactor for preparing lithium battery electrolyte, including a reactor body, a feed pipe is provided at the upper end of the reactor body, a discharge pipe is provided at the bottom end of the reactor body, a fixed frame is fixedly connected to the bottom end of the inner wall of the reactor body, a stirring mechanism is rotatably connected to the fixed frame, a lifting mechanism is sleeved inside the stirring mechanism, a transmission mechanism is fixedly connected to the top of the lifting mechanism, and the lifting mechanism is connected to the stirring mechanism, so that the solute accumulated at the bottom end of the reactor body is lifted to the stirring mechanism above for discharge and mixing with the solvent in the reactor body. The present invention can avoid the solute from falling quickly to the bottom of the reactor body to cause accumulation by arranging the stirring mechanism and the lifting mechanism, and reduce the contact area between the solute and the solvent, thereby improving the mixing effect and accelerating the preparation process of the electrolyte.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium battery electrolyte preparation equipment, and specifically relates to a reaction kettle for preparing lithium battery electrolyte. Background Art

[0002] Lithium battery electrolyte is the carrier of ion transmission in the battery, generally composed of lithium salt and organic solvent. A reactor is required in the preparation process of the electrolyte. During the preparation process of the electrolyte, the substances added to the reactor need to be fully stirred and mixed.

[0003] After searching, the Chinese utility model patent with publication number CN209646499U discloses a lithium battery electrolyte preparation device. The application drives a stirring plate and a U-shaped plate to stir the electrolyte through a rotating shaft, and breaks the bubbles generated during the stirring process through the provided blades to improve the quality of the lithium battery.

[0004] However, during the stirring process, the solute lithium salt will accumulate at the bottom of the reactor under the action of its own gravity, reducing the contact area between the lithium salt and the organic solvent, slowing down the mixing speed, and thus prolonging the preparation time of the lithium battery electrolyte. Summary of the invention

[0005] The object of the present invention is to provide a reactor for preparing lithium battery electrolyte to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0007] The present invention provides a reactor for preparing a lithium battery electrolyte, comprising a reactor body, a feed pipe being provided at the upper end of the reactor body, a discharge pipe being provided at the bottom end of the reactor body, a fixing frame being fixedly connected to the bottom end of the inner wall of the reactor body, a stirring mechanism being rotatably connected to the fixing frame, a lifting mechanism being sleeved inside the stirring mechanism, a transmission mechanism being fixedly connected to the top end of the lifting mechanism, the lifting mechanism being connected to the stirring mechanism, so that the solute accumulated at the bottom end of the reactor body is lifted to the stirring mechanism above for discharge and mixing with the solvent in the reactor body;

[0008] The stirring mechanism comprises an outer sleeve, a stirring frame, a mounting groove, a flow groove and a stirring blade. The stirring frame is provided with a mounting groove, and the stirring frame is provided with a flow groove above the mounting groove. The outer sleeve is driven by the transmission mechanism to rotate, and the solute accumulated at the bottom is lifted into the flow groove in the stirring frame by the lifting mechanism, and then discharged to the vicinity of the stirring blade. When the outer sleeve rotates, the stirring frame and the stirring blade rotate accordingly to increase the mixing of the solute and the solvent.

[0009] The lifting mechanism includes an inner sleeve sleeved in the outer sleeve, a connecting port is provided on the inner sleeve at a position corresponding to the flow groove, a fixing ring groove is provided on the inner sleeve at a position corresponding to the mounting groove, a first gear ring is fixedly connected in the fixing ring groove, a mounting shaft is sleeved in the inner sleeve, and a spiral blade is fixedly connected to the mounting shaft.

[0010] Furthermore, the stirring mechanism includes an outer sleeve rotatably connected to the fixed frame, the outer sleeve has mounting openings along a radial array, the mounting openings are spaced apart along the axial direction of the outer sleeve, a stirring frame is fixedly connected in each mounting opening, a rotating shaft is rotatably connected in the mounting groove, a first bevel gear is fixedly connected to the rotating shaft, a rotating shaft passes through the stirring frame and is rotatably connected, a stirring blade is fixedly connected to one end of the rotating shaft outside the mounting groove, a second bevel gear is fixedly connected to one end of the rotating shaft located in the mounting groove, the second bevel gear is meshed with the first bevel gear, and a rotating gear is fixedly connected to one end of the rotating shaft close to the mounting opening.

[0011] Furthermore, the transmission mechanism includes a connecting shaft fixedly connected to the mounting shaft, an end of the connecting shaft away from the mounting shaft is fixedly connected to the first gear, the first gear is fixedly connected to the side away from the mounting shaft with a first connecting rod, the first gear is meshed with a second gear, the second gear is meshed with a second gear ring, the second gear is rotatably connected to a connecting frame on the side away from the mounting shaft, one end of the connecting frame is fixedly connected to the second connecting rod, one end of the second connecting rod passes through the second gear and is fixedly connected to the inner sleeve, the upper end of the reactor body is fixedly connected to the motor, the output end of the motor is fixedly connected to the first connecting rod, the second gear ring is fixedly connected to the inner wall of the outer sleeve, and the other end of the second connecting rod is fixedly connected to the top of the reactor body.

[0012] Furthermore, the first gear ring is meshed with the rotating gear.

[0013] Furthermore, the bottom ends of the outer sleeve and the inner sleeve are spaced a certain distance from the bottom end of the reactor body.

[0014] Furthermore, one end of the mounting shaft and the spiral blade close to the bottom end of the reactor body extends outside the inner sleeve.

[0015] Furthermore, a discharge port is provided at a position of the stirring frame corresponding to the rotating shaft, and the discharge port is communicated with the flow tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention can lift the solute accumulated at the bottom of the reactor body to the solvent above the reactor body by arranging a lifting mechanism, thereby avoiding the accumulation of excessive solute at the bottom of the reactor body and reducing the contact area between the solute and the solvent, thereby improving the mixing effect and accelerating the preparation process of the electrolyte.

[0018] The present invention can stir the solute lifted to the vicinity of the stirring blade by arranging a stirring mechanism, and make the fluctuation amplitude of the solvent around the stirring blade larger, thereby prolonging the residence time of the solute around the stirring blade, and preventing the solute from falling quickly to the bottom of the reactor body to cause accumulation, thereby shortening the preparation time of the electrolyte;

[0019] The present invention can make the stirring mechanism and the lifting mechanism run synchronously by arranging the transmission mechanism, so that the solute can be circulated and lifted to the stirring mechanism through the lifting mechanism for stirring, which can prevent the solute from falling quickly to the bottom of the reactor body to cause accumulation, and reduce the contact area between the solute and the solvent, thereby improving the mixing effect and accelerating the preparation process of the electrolyte.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0023] Figure 2 It is a side view structural schematic diagram of the present invention;

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0025] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 5 It is a schematic diagram of a cutaway three-dimensional structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the overall structure of the stirring mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the enlarged three-dimensional structure of the connection between the lifting mechanism and the transmission mechanism of the present invention;

[0029] Figure 8It is a schematic diagram of a partial three-dimensional structure of the transmission mechanism of the present invention.

[0030] In the figure: 1. reactor body; 2. feed pipe; 3. discharge pipe; 4. fixed frame; 5. outer sleeve; 6. installation port; 7. stirring frame; 8. installation groove; 9. flow groove; 10. rotating shaft; 11. first bevel gear; 12. rotating shaft; 13. stirring blade; 14. second bevel gear; 15. rotating gear; 16. inner sleeve; 17. connecting port; 18. fixed ring groove; 19. first gear ring; 20. installation shaft; 21. spiral blade; 22. connecting shaft; 23. first gear; 24. first connecting rod; 25. second gear; 26. second gear ring; 27. connecting frame; 28. second connecting rod; 29. ​​motor; 30. discharge port. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0032] See also Figures 1 to 8 A reactor for preparing lithium battery electrolyte, comprising a reactor body 1, a feed pipe 2 is provided at the upper end of the reactor body 1, a discharge pipe 3 is provided at the bottom end of the reactor body 1, a fixing frame 4 is fixedly connected to the bottom end of the inner wall of the reactor body 1, a stirring mechanism is rotatably connected to the fixing frame 4, a lifting mechanism is sleeved in the stirring mechanism, a transmission mechanism is fixedly connected to the top of the lifting mechanism, the lifting mechanism is connected to the stirring mechanism, so that the solute accumulated at the bottom end of the reactor body 1 is lifted to the stirring mechanism above to be discharged and mixed with the solvent in the reactor body 1;

[0033] Wherein, the stirring mechanism includes an outer sleeve 5, a stirring frame 7, a mounting groove 8, a flow groove 9 and a stirring blade 13. The stirring frame 7 is provided with a mounting groove 8, and the stirring frame 7 is provided with a flow groove 9 above the mounting groove 8. The outer sleeve 5 is driven by a transmission mechanism to rotate, and the solute accumulated at the bottom is lifted to the flow groove 9 in the stirring frame 7 through a lifting mechanism, and then discharged to the vicinity of the stirring blade 13. When the outer sleeve 5 rotates, the stirring frame 7 and the stirring blade 13 rotate accordingly to increase the mixing of the solute and the solvent.

[0034] The lifting mechanism includes an inner sleeve 16 sleeved in the outer sleeve 5, a connecting port 17 is provided on the inner sleeve 16 at a position corresponding to the flow groove 9, a fixing ring groove 18 is provided on the inner sleeve 16 at a position corresponding to the mounting groove 8, a first gear ring 19 is sleeved and fixedly connected in the fixing ring groove 18, a mounting shaft 20 is sleeved in the inner sleeve 16, and a spiral blade 21 is fixedly connected to the mounting shaft 20.

[0035] When preparing the electrolyte, the solute and the solvent are added into the reactor body 1 through the feed pipe 2. The solute will accumulate at the bottom of the reactor body 1 under the action of its own gravity. The transmission mechanism drives the lifting mechanism and the stirring mechanism to stir the solute and the solvent to prepare the electrolyte. By setting the lifting mechanism, the solute accumulated at the bottom of the reactor body 1 can be lifted to the top of the reactor body 1 and discharged to the space above. The stirring mechanism is used to stir it to promote the dissolution of the solute and accelerate the preparation process of the electrolyte. By setting the transmission mechanism, the stirring mechanism and the lifting mechanism can be operated synchronously, so that the solute can be circulated and lifted to the stirring mechanism through the lifting mechanism for stirring, so as to improve the mixing effect.

[0036] See also Figures 3 to 5 The stirring mechanism includes an outer sleeve 5 rotatably connected to the fixed frame 4, the outer sleeve 5 is provided with mounting openings 6 along a radial array, the mounting openings 6 are arranged at intervals along the axial direction of the outer sleeve 5, a stirring frame 7 is fixedly connected in each mounting opening 6, a rotating shaft 10 is rotatably connected in the mounting groove 8, a first bevel gear 11 is fixedly connected to the rotating shaft 10, a rotating shaft 12 passes through the stirring frame 7 and is rotatably connected, a stirring blade 13 is fixedly connected to one end of the rotating shaft 12 located outside the mounting groove 8, a second bevel gear 14 is fixedly connected to one end of the rotating shaft 12 located in the mounting groove 8, the second bevel gear 14 is meshed with the first bevel gear 11, and a rotating gear 15 is fixedly connected to one end of the rotating shaft 10 close to the mounting opening 6.

[0037] See also Figure 7 and Figure 8 The transmission mechanism includes a connecting shaft 22 fixedly connected to the mounting shaft 20, an end of the connecting shaft 22 away from the mounting shaft 20 is fixedly connected to a first gear 23, a side of the first gear 23 away from the mounting shaft 20 is fixedly connected to a first connecting rod 24, a second gear 25 is meshed and transmitted on the first gear 23, a second gear ring 26 is meshed and transmitted on the second gear 25, a connecting frame 27 is rotatably connected to the side of the second gear 25 away from the mounting shaft 20, one end of the connecting frame 27 is fixedly connected to a second connecting rod 28, one end of the second connecting rod 28 passes through the second gear 25 and is fixedly connected to the inner sleeve 16, an upper end of the reactor body 1 is fixedly connected to a motor 29, an output end of the motor 29 is fixedly connected to the first connecting rod 24, the second gear ring 26 is fixedly connected to the inner wall of the outer sleeve 5, and the other end of the second connecting rod 28 is fixedly connected to the top of the reactor body 1.

[0038] During stirring, the motor 29 is started, and the output end of the motor 29 drives the first connecting rod 24 to rotate, thereby driving the first gear 23 to rotate, and then driving the connecting shaft 22 to rotate. The rotation of the connecting shaft 22 drives the installation shaft 20 to rotate, and the installation shaft 20 drives the spiral blade 21 to rotate. The inner sleeve 16 is fixedly connected to the reactor body 1 through the connecting rod. The spiral blade 21 rotates in the inner sleeve 16, driving the accumulated solute to move upward. During the upward movement of the solute, it enters the flow tank 9 through the connecting port 17, and then is discharged into the solvent above the reactor body 1 through the discharge port 30, so that the solute is more dispersed and mixed with the solvent, increasing the contact area with the solvent, thereby accelerating the mixing speed and shortening the preparation time of the electrolyte. At the same time, the rotation of the first gear 23 drives the second gear 25 to rotate around the connecting frame 27, and the rotation of the second gear 25 drives the The second gear ring 26 is driven to rotate, and the rotation of the second gear ring 26 drives the outer sleeve 5 to rotate, so that the rotating shaft 10 rotates around the inner sleeve 16, and drives the rotating gear 15 to rotate around the inner sleeve 16, and the rotating gear 15 is meshed with the first gear ring 19, so that the rotating gear 15 rotates while rotating around the inner sleeve 16, and the rotating gear 15 drives the rotating shaft 10 to rotate, thereby driving the first bevel gear 11 to rotate, and then driving the second bevel gear 14 to rotate, and the second bevel gear 14 drives the rotating shaft 12 to rotate, thereby driving the stirring blade 13 to rotate, and then stirring the solvent. Each stirring frame 7 is provided with at least two stirring blades 13. When the stirring blade 13 rotates, the fluctuation amplitude of the solvent around the stirring blade 13 will be larger, which can prevent the solute from quickly falling to the inner bottom of the reactor body 1 to cause accumulation, thereby shortening the preparation time of the electrolyte.

[0039] See also Figure 7 The first gear ring 19 meshes with the rotating gear 15, so that the rotating gear 15 can rotate on its own, thereby driving the stirring blade 13 to rotate through the transmission connection.

[0040] See also Figure 3 The bottom ends of the outer sleeve 5 and the inner sleeve 16 are spaced a certain distance from the bottom end of the reactor body 1 so that the accumulated solute can enter the inner sleeve 16.

[0041] See also Figure 3 The mounting shaft 20 and the spiral blade 21 are installed so that the end near the bottom of the reactor body 1 extends to the outside of the inner sleeve 16 , so that the solute accumulated at the bottom of the reactor body 1 can be more easily driven to the upper part of the reactor body 1 .

[0042] See also Figure 4 A discharge port 30 is provided at a position corresponding to the rotating shaft 12 of the stirring frame 7 , and the discharge port 30 is connected to the flow groove 9 , so that the solute driven to the upper part of the reactor body 1 is discharged into the solvent above the reactor body 1 through the discharge port 30 .

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reactor for preparing lithium battery electrolyte, characterized in that: The invention comprises a reactor body (1), wherein the upper end of the reactor body (1) is provided with a feed pipe (2), the lower end of the reactor body (1) is provided with a discharge pipe (3), the lower end of the inner wall of the reactor body (1) is fixedly connected to a fixing frame (4), a stirring mechanism is rotatably connected to the fixing frame (4), a lifting mechanism is sleeved inside the stirring mechanism, a transmission mechanism is fixedly connected to the top of the lifting mechanism, the lifting mechanism is connected to the stirring mechanism, and the solute accumulated at the lower end of the reactor body (1) is lifted to the stirring mechanism above to be discharged and mixed with the solvent in the reactor body (1); The stirring mechanism comprises an outer sleeve (5), a stirring frame (7), a mounting groove (8), a flow groove (9) and a stirring blade (13); the stirring frame (7) is provided with a mounting groove (8); the stirring frame (7) is provided with a flow groove (9) above the mounting groove (8); the outer sleeve (5) is driven by the transmission mechanism to rotate, and the solute accumulated at the bottom is lifted into the flow groove (9) in the stirring frame (7) by the lifting mechanism, and then discharged to the vicinity of the stirring blade (13); when the outer sleeve (5) rotates, the stirring frame (7) and the stirring blade (13) rotate accordingly to increase the mixing of the solute and the solvent; The lifting mechanism comprises an inner sleeve (16) sleeved inside the outer sleeve (5), a communication port (17) being provided on the inner sleeve (16) at a position corresponding to the flow groove (9), a fixed ring groove (18) being provided on the inner sleeve (16) at a position corresponding to the mounting groove (8), a first gear ring (19) being sleeved and fixedly connected inside the fixed ring groove (18), a mounting shaft (20) being sleeved inside the inner sleeve (16), and a spiral blade (21) being fixedly connected to the mounting shaft (20); The stirring mechanism comprises an outer sleeve (5) rotatably connected to a fixed frame (4), the outer sleeve (5) being provided with mounting openings (6) in a radial array, the mounting openings (6) being arranged at intervals along the axial direction of the outer sleeve (5), a stirring frame (7) being fixedly connected in each mounting opening (6), a rotating shaft (10) being rotatably connected in the mounting groove (8), a first bevel gear (11) being fixedly connected to the rotating shaft (10), a rotating shaft (12) passing through the stirring frame (7) being rotatably connected, a stirring blade (13) being fixedly connected to one end of the rotating shaft (12) located outside the mounting groove (8), a second bevel gear (14) being fixedly connected to one end of the rotating shaft (12) located inside the mounting groove (8), the second bevel gear (14) being meshed with the first bevel gear (11), and a rotating gear (15) being fixedly connected to one end of the rotating shaft (10) close to the mounting opening (6); The transmission mechanism comprises a connecting shaft (22) fixedly connected to the mounting shaft (20); one end of the connecting shaft (22) away from the mounting shaft (20) is fixedly connected to a first gear (23); a side of the first gear (23) away from the mounting shaft (20) is fixedly connected to a first connecting rod (24); a second gear (25) is meshed and driven on the first gear (23); a second gear ring (26) is meshed and driven on the second gear (25); and a side of the second gear (25) away from the mounting shaft (20) is rotatably connected to the first connecting rod (24). A connecting frame (27) is provided, one end of the connecting frame (27) is fixedly connected to a second connecting rod (28), one end of the second connecting rod (28) passes through the second gear (25) and is fixedly connected to the inner sleeve (16), the upper end of the reactor body (1) is fixedly connected to a motor (29), the output end of the motor (29) is fixedly connected to the first connecting rod (24), the second gear ring (26) is fixedly connected to the inner wall of the outer sleeve (5), and the other end of the second connecting rod (28) is fixedly connected to the top of the reactor body (1); A discharge port (30) is provided at a position of the stirring frame (7) corresponding to the rotating shaft (12), and the discharge port (30) is connected to the flow groove (9).

2. A reactor for preparing lithium battery electrolyte according to claim 1, characterized in that: The first gear ring (19) meshes with the rotating gear (15).

3. The reactor for preparing lithium battery electrolyte according to claim 1, characterized in that: The bottom ends of the outer sleeve (5) and the inner sleeve (16) are spaced a certain distance from the bottom end of the reactor body (1).

4. The reactor for preparing lithium battery electrolyte according to claim 1, characterized in that: One end of the mounting shaft (20) and the spiral blade (21) close to the bottom end of the reactor body (1) extends to the outside of the inner sleeve (16).

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