Powder drying device for LATP electrolyte preparation

Abstract

The utility model discloses a powder drying device for LATP electrolyte preparation, and relates to the technical field of drying equipment. An air inlet drying mechanism is arranged on the outer side of the drying cylinder, the drying cylinder is connected with a separation cylinder through a middle pipe, storage mechanisms are arranged at the lower ends of the separation cylinder and the drying cylinder, and heat transfer mechanisms are arranged between the storage mechanisms and the air inlet drying mechanism. The temporary storage pipe is used for temporarily storing the powder, the storage outer cylinder can be detached, the electrolyte powder can be taken out, according to the scheme, after the electrolyte powder is taken out, the electrolyte powder can be cleaned without shutdown, and therefore the working efficiency of equipment is guaranteed; through the arrangement of the heat transfer mechanism, the high-temperature powder passing through the temporary storage pipe is cooled, the problem that the ambient air humidity is high due to the fact that the temperature is high after the high-temperature powder is taken out is effectively avoided, meanwhile, recycled heat is used for preheating air about to enter the heater, energy consumption is greatly reduced, meanwhile, heat pollution is reduced, and the service life is prolonged. The requirements of green production are met.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a powder drying device for preparing LATP electrolyte. Background Art

[0002] LATP (lithium aluminum titanium phosphate) electrolyte is a high-performance solid-state electrolyte material widely used in lithium-ion batteries to improve safety and energy density. Powder drying is a critical step in the preparation of LATP electrolyte, directly impacting its ultimate performance and stability. The primary purpose of drying is to remove moisture and solvent from the powder, preventing cracking and agglomeration during subsequent processing.

[0003] Patent publication number CN221859172U discloses a powder drying device for preparing LATP electrolytes, comprising a main frame, a drying chamber installed on one side of the top of the main frame, a first cyclone separator provided on the left side of the drying chamber, and full-level reminder mechanisms provided at the bottoms of the drying chamber, the first cyclone separator, and the second cyclone separator. The powder drying device for preparing LATP electrolytes is provided with a collection tank, a support plate, a weighing sensor, an LED indicator light, and a USB interface. During use, as the amount of powder in the collection tank continues to increase, the pressure exerted by the support plate on the weighing sensor gradually increases. When the pressure of the weighing sensor exceeds a preset threshold, the LED indicator light turns from green to red, and the staff removes the collection tank for cleaning. The lithium battery provides energy support for the weighing sensor and the LED indicator light, realizing the full-level reminder function, solving the problem that the device does not have the full-level reminder function. However, there are still obvious defects in the above patent. The collection tank is directly connected to the separation cylinder and the drying cylinder. When the powder is full, the entire equipment must be stopped for cleaning. This is not only cumbersome to operate, but also seriously affects the normal working efficiency of the equipment. On the other hand, the temperature of the electrolyte powder after drying is relatively high. If it is taken out directly, it will come into contact with cold air, forming a high humidity environment around it, which is not only not conducive to the storage and transportation of the powder, but may also have an adverse effect on the performance of the electrolyte.

[0004] Therefore, the present application proposes a powder drying device for preparing LATP electrolyte to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a powder drying device for preparing LATP electrolyte, which solves the technical problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a powder drying device for preparing LATP electrolyte, comprising a drying drum and a separation drum, the upper end of the drying drum being fixedly connected to a feeding outer tube, a feeding inner tube being arranged above the feeding outer tube, the lower end of the feeding inner tube penetrating the upper side wall of the feeding outer tube and extending into the feeding outer tube, an air intake drying mechanism being arranged on the outer side of the drying drum, an intermediate tube being arranged between the separation drum and the drying drum, the left end of the intermediate tube penetrating the separation drum and being connected with the separation drum, the right end of the intermediate tube penetrating the side wall of the drying drum and extending downwardly, an exhaust fan being arranged on the outer side of the separation drum, the input end of the exhaust fan being fixedly connected to an exhaust pipe, the end of the exhaust pipe away from the exhaust fan penetrating the upper side wall of the separation drum and being fixedly connected to the separation inner drum, a storage mechanism being arranged at the lower ends of the separation drum and the drying drum, and a heat transfer mechanism being arranged between the storage mechanism and the air intake drying mechanism;

[0007] The storage mechanism includes a temporary storage pipe. The lower ends of the separation cylinder and the drying cylinder are connected to the upper end of the temporary storage pipe through flanges. The lower end of the temporary storage pipe is clamped with the storage outer cylinder. The temporary storage pipe is provided with a solenoid valve.

[0008] Preferably, the air intake drying mechanism includes an air intake outer pipe and a heater, the air intake outer pipe is located on the inner side of the heat transfer mechanism, the lower end of the air intake outer pipe is connected to a filter, the upper end of the air intake outer pipe is connected to the air intake end of the heater, the air outlet end of the heater is connected to an air intake main pipe, and the end of the air intake main pipe away from the heater passes through the side wall of the drying cylinder and is connected to the drying cylinder.

[0009] Preferably, an air intake branch pipe is fixedly connected to the side wall of the air intake main pipe, and one end of the air intake branch pipe away from the air intake main pipe passes through the outer feed pipe and is connected to the outer feed pipe.

[0010] Preferably, the heat transfer mechanism includes a circulating water tank, a circulating water pump, a heat exchange outer tube 2, two heat exchange outer tubes 1, a connecting pipe 1 and a connecting pipe 2. The two heat exchange outer tubes 1 are respectively sleeved on the outside of the two temporary storage tubes, and the heat exchange outer tube 2 is sleeved on the air intake outer tube. The input end of the circulating water pump is connected to the circulating water tank, and the output end of the circulating water pump is fixedly connected to the water inlet pipe. The end of the water inlet pipe away from the circulating water pump passes through the side wall of the left heat exchange outer tube 1 and is connected to the left heat exchange outer tube 1. The two heat exchange outer tubes 1 are connected through the connecting pipe 1, and the heat exchange outer tube 1 and the heat exchange outer tube 2 on the right are connected through the connecting pipe 2. A return pipe is fixedly connected to the side wall of the heat exchange outer tube 2, and the end away from the return pipe is connected to the circulating water tank.

[0011] Preferably, a temperature detection sensor is provided in the intake manifold.

[0012] Preferably, a storage inner cylinder is provided on the inner side of the data storage outer cylinder, a pressure detection sensor is fixedly connected to the lower end of the storage inner cylinder, the lower end of the pressure detection sensor is fixedly connected to the lower inner wall of the storage outer cylinder, an alarm is provided on the outer wall of the storage outer cylinder, and the pressure detection sensor is connected to the alarm through a controller.

[0013] Compared with related technologies, the powder drying device for preparing LATP electrolyte provided by the present invention has the following beneficial effects:

[0014] 1. The utility model provides a powder drying device for preparing LATP electrolyte. In this device, a temporary storage tube and a storage outer cylinder are provided in a storage mechanism, and a solenoid valve is provided on the temporary storage tube. A storage inner cylinder is provided on the inner side of the storage outer cylinder. During the drying process, a pressure detection sensor between the storage outer cylinder and the storage inner cylinder is used for real-time detection. When the pressure detection sensor detects that a certain amount of powder has accumulated, the controller controls the alarm to sound an alarm and closes the solenoid valve at the same time. The temporary storage tube is used for temporary storage of the powder, and the storage outer cylinder can be disassembled to take out the electrolyte powder therein. After the electrolyte powder is taken out, the storage outer cylinder is connected to the lower end of the temporary storage tube again, and the solenoid valve is opened. This solution can complete the cleaning of the electrolyte powder without stopping the machine after taking out the electrolyte powder, thereby ensuring the working efficiency of the equipment.

[0015] 2. The present invention provides a powder drying device for preparing LATP electrolytes. A heat transfer mechanism is provided between the storage mechanism and the air intake drying mechanism. During use, a circulating water pump is used to direct heat transfer liquid from the circulating water tank into the left heat exchange outer cylinder 1, where it exchanges heat with the high-temperature powder passing through the left temporary storage tube. The exchanged liquid then enters the heat exchange outer cylinder 1 outside the right temporary storage tube through connecting pipe 1, where it exchanges heat with the high-temperature powder in the right temporary storage tube, thereby cooling the dried electrolyte powder and effectively preventing the high humidity in the surrounding air caused by the high temperature of the high-temperature powder after removal. The exchanged liquid then enters the heat exchange outer cylinder 2 outside the air intake outer tube through connecting pipe 2, where it heats the cold air about to enter the heater. This effectively recovers the heat generated during the drying process and is used to preheat the air about to enter the heater, significantly reducing energy consumption and thermal pollution, thus meeting the requirements of green production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3It is a schematic diagram of the cross-sectional three-dimensional structure of the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0020] Figure 5 for Figure 3 A partial enlarged view of point C in the middle;

[0021] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the storage outer cylinder of the present invention.

[0022] In the figure: 1. Drying drum; 2. Separation drum; 3. Exhaust fan; 4. Exhaust pipe; 5. Intermediate pipe; 6. Feed outer pipe; 7. Feed inner pipe; 8. Air intake branch pipe; 9. Air intake main pipe; 10. Air intake outer pipe; 11. Filter; 12. Temporary storage pipe; 13. Solenoid valve; 14. Storage outer drum; 15. Storage inner drum; 16. Pressure detection sensor; 17. Alarm; 18. Circulating water tank; 19. Circulating water pump; 20. Water inlet pipe; 21. Heat exchange outer drum 1; 22. Connecting pipe 1; 23. Heat exchange outer drum 2; 24. Connecting pipe 2; 25. Return pipe; 26. Temperature detection sensor; 27. Heater; 28. Separation inner drum. DETAILED DESCRIPTION

[0023] The technical solutions 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, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-6 The utility model provides a technical solution: a powder drying device for preparing LATP electrolyte, comprising a drying drum 1 and a separation drum 2, the upper end of the drying drum 1 is fixedly connected to a feeding outer tube 6, a feeding inner tube 7 is arranged above the feeding outer tube 6, the lower end of the feeding inner tube 7 passes through the upper side wall of the feeding outer tube 6 and extends into the feeding outer tube 6, an air intake drying mechanism is arranged on the outside of the drying drum 1, an intermediate tube 5 is arranged between the separation drum 2 and the drying drum 1, the left end of the intermediate tube 5 passes through the separation drum 2 and is communicated with the separation drum 2, the right end of the intermediate tube 5 passes through the side wall of the drying drum 1 and extends downward, an exhaust fan 3 is arranged on the outside of the separation drum 2, the input end of the exhaust fan 3 is fixedly connected to the exhaust pipe 4, the end of the exhaust pipe 4 away from the exhaust fan 3 passes through the upper side wall of the separation drum 2 and is fixedly connected to the separation inner drum 28, the lower ends of the separation drum 2 and the drying drum 1 are both provided with a storage mechanism, and a heat transfer mechanism is provided between the storage mechanism and the air intake drying mechanism;

[0025] The storage mechanism includes a temporary storage pipe 12, the lower ends of the separation cylinder 2 and the drying cylinder 1 are connected to the upper end of the temporary storage pipe 12 through a flange, the lower end of the temporary storage pipe 12 is clamped with the storage outer cylinder 14, and a solenoid valve 13 is provided on the temporary storage pipe 12. A storage inner cylinder 15 is provided on the inner side of the data storage outer cylinder 14, and a pressure detection sensor 16 is fixedly connected to the lower end of the storage inner cylinder 15. The lower end of the pressure detection sensor 16 is fixedly connected to the lower inner wall of the storage outer cylinder 14, and an alarm 17 is provided on the outer wall of the storage outer cylinder 14. The pressure detection sensor 16 is connected to the alarm 17 through a controller. After entering the drying cylinder 1, hot air is used for drying operation, and part of the powder enters the separation cylinder 2 through the intermediate pipe 5 for separation and drying. The powder in the dry cylinder 1 and the powder that enters the separation cylinder 2 enter the storage inner cylinder 15 in the storage outer cylinder 14 through the temporary storage pipe 12, wherein the pressure detection sensor 16 performs real-time detection. When the pressure detection sensor 16 detects that a certain amount of powder has accumulated, the controller controls the alarm 17 to alarm and close the solenoid valve 13 at the same time. The temporary storage pipe 12 is used for temporary storage of powder, and the storage outer cylinder 14 can be disassembled to take out the electrolyte powder therein. After the electrolyte powder is taken out, the storage outer cylinder 14 is connected to the lower end of the temporary storage pipe 12 again, and the solenoid valve 13 is opened. This solution can complete the cleaning of the electrolyte powder without stopping the machine after taking out the electrolyte powder, thereby ensuring the working efficiency of the equipment;

[0026] The air intake drying mechanism includes an air intake outer tube 10 and a heater 27. The air intake outer tube 10 is located inside the heat transfer mechanism. The lower end of the air intake outer tube 10 is connected to a filter 11. The upper end of the air intake outer tube 10 is connected to the air intake end of the heater 27. The air outlet end of the heater 27 is connected to an air intake main pipe 9. The end of the air intake main pipe 9 away from the heater 27 passes through the side wall of the drying cylinder 1 and is connected to the drying cylinder 1. The filter 11 is used to filter the incoming air to prevent the product from being contaminated by the external environment. The heater 27 is used to heat the incoming air to facilitate the subsequent drying operation of the electrolyte powder.

[0027] An air intake branch pipe 8 is fixedly connected to the side wall of the air intake main pipe 9. The end of the air intake branch pipe 8 away from the air intake main pipe 9 passes through the outer feeding pipe 6 and is connected to the outer feeding pipe 6. Due to the arrangement of the air intake branch pipe 8, when electrolyte powder is added to the drying cylinder 1 through the inner feeding pipe 7, the gas ejected from the air intake branch pipe 8 is used to disperse the added electrolyte powder, thereby effectively preventing the powder from being damp and agglomerated and affecting the subsequent drying operation;

[0028] The heat transfer mechanism includes a circulating water tank 18, a circulating water pump 19, a heat exchange outer cylinder 23, two heat exchange outer cylinders 1 21, a connecting pipe 1 22 and a connecting pipe 2 24. The two heat exchange outer cylinders 1 21 are respectively sleeved on the outside of the two temporary storage pipes 12, and the heat exchange outer cylinder 2 23 is sleeved on the air intake outer pipe 10. The input end of the circulating water pump 19 is connected to the circulating water tank 18, and the output end of the circulating water pump 19 is fixedly connected to the water inlet pipe 20. The end of the water inlet pipe 20 away from the circulating water pump 19 passes through the side wall of the left heat exchange outer cylinder 1 21 and is connected to the left heat exchange outer cylinder 1 21. The two heat exchange outer cylinders 1 21 are connected through the connecting pipe 1 22. The right heat exchange outer cylinder 1 21 and the heat exchange outer cylinder 2 23 is connected through connecting pipe 24. A return pipe 25 is fixedly connected to the side wall of heat exchange outer cylinder 23. The end away from the return pipe 25 is connected to the circulating water tank 18. When in use, the circulating water pump 19 is used to guide the heat transfer liquid in the circulating water tank 18 into the left heat exchange outer cylinder 1 21 to exchange heat with the high-temperature powder passing through the left temporary storage tube 12. The exchanged liquid enters the heat exchange outer cylinder 1 21 outside the right temporary storage tube 12 through connecting pipe 1 22 to exchange heat with the high-temperature powder in the right temporary storage tube 12, thereby achieving the cooling operation of the electrolyte powder after drying, effectively avoiding the problem of high humidity in the surrounding air caused by the high temperature of the high-temperature powder after being taken out. The exchanged liquid then enters the heat exchange outer cylinder 2 23 outside the air intake outer tube 10 through connecting pipe 2 24 to heat the cold air about to enter the heater 27, realizing the effective recovery of heat generated during the drying process and used to preheat the air about to enter the heater 27, greatly reducing energy consumption and reducing thermal pollution, meeting the requirements of green production.

[0029] A temperature detection sensor 26 is provided in the air intake manifold 9, and the temperature detection sensor 26 is used to detect the air entering the drying drum 1 in real time to avoid the temperature being too low to achieve the drying effect and the temperature being too high to affect the product quality.

[0030] Working principle: When in use, turn on the exhaust fan 3 to drive the flow of air in the separation cylinder 2 and the drying cylinder 1. The external air is heated by the heater 27 after passing through the filter 11. The heated hot air is introduced into the drying cylinder 1 through the air intake main pipe 9, and part of the hot air enters the feeding outer pipe 6 through the air intake branch pipe 8. When the electrolyte powder is added to the drying cylinder 1 through the feeding inner pipe 7, the gas ejected from the air intake branch pipe 8 is used to disperse the added electrolyte powder and eject it from the lower port of the feeding outer pipe 6. After entering the drying cylinder 1, the hot air is used for drying operation, and part of the powder enters the separation cylinder 2 through the intermediate pipe 5 for separation. Part of the powder in the drying cylinder 1 and the powder entering The powder in the separation cylinder 2 enters the storage inner cylinder 15 in the storage outer cylinder 14 through the temporary storage tube 12, wherein the pressure detection sensor 16 performs real-time detection. When the pressure detection sensor 16 detects that a certain amount of powder has accumulated, the controller controls the alarm 17 to alarm, and at the same time closes the solenoid valve 13. The temporary storage tube 12 is used for temporary storage of powder, and the storage outer cylinder 14 can be disassembled to take out the electrolyte powder therein; after completing the electrolyte powder removal operation, the storage outer cylinder 14 is connected to the lower end of the temporary storage tube 12 again, and the solenoid valve 13 is opened. This solution can complete the cleaning of the electrolyte powder without shutting down the machine after taking out the electrolyte powder, thereby ensuring the working efficiency of the equipment. A heat transfer mechanism is provided between the storage mechanism and the intake drying mechanism. During operation, a circulating water pump 19 directs heat transfer liquid from the circulating water tank 18 into the left heat exchange outer cylinder 1 21, where it exchanges heat with the high-temperature powder passing through the left temporary storage tube 12. The exchanged liquid then flows through a connecting tube 1 22 into the heat exchange outer cylinder 1 21 outside the right temporary storage tube 12, exchanging heat with the high-temperature powder in the right temporary storage tube 12. This cools the dried electrolyte powder and effectively prevents the high humidity in the surrounding air caused by the high temperature of the high-temperature powder after removal. The exchanged liquid then flows through a connecting tube 2 24 into the heat exchange outer cylinder 2 23 outside the intake outer tube 10, heating the cold air entering the heater 27. This effectively recovers the heat generated during the drying process and is used to preheat the air entering the heater 27, significantly reducing energy consumption and thermal pollution, meeting the requirements of green production.

Claims

1. A powder drying device for preparing LATP electrolyte, comprising a drying drum (1) and a separation drum (2), characterized in that: The upper end of the drying cylinder (1) is fixedly connected to a feeding outer tube (6), and a feeding inner tube (7) is provided above the feeding outer tube (6). The lower end of the feeding inner tube (7) passes through the upper side wall of the feeding outer tube (6) and extends into the feeding outer tube (6). An air intake drying mechanism is provided on the outer side of the drying cylinder (1). An intermediate tube (5) is provided between the separation cylinder (2) and the drying cylinder (1). The left end of the intermediate tube (5) passes through the separation cylinder (2) and is in communication with the separation cylinder (2). The right end of the tube (5) passes through the side wall of the drying cylinder (1) and extends downward. An exhaust fan (3) is provided on the outside of the separation cylinder (2). The input end of the exhaust fan (3) is fixedly connected to an exhaust pipe (4). The end of the exhaust pipe (4) away from the exhaust fan (3) passes through the upper side wall of the separation cylinder (2) and is fixedly connected to a separation inner cylinder (28). The lower ends of the separation cylinder (2) and the drying cylinder (1) are both provided with storage mechanisms. A heat transfer mechanism is provided between the storage mechanism and the air intake drying mechanism. The storage mechanism comprises a temporary storage pipe (12), the lower ends of the separation cylinder (2) and the drying cylinder (1) are connected to the upper end of the temporary storage pipe (12) via flanges, the lower end of the temporary storage pipe (12) is clamped to the storage outer cylinder (14), and a solenoid valve (13) is provided on the temporary storage pipe (12).

2. The powder drying device for preparing LATP electrolyte according to claim 1, characterized in that: The air intake drying mechanism comprises an air intake outer pipe (10) and a heater (27), wherein the air intake outer pipe (10) is located on the inner side of the heat transfer mechanism, the lower end of the air intake outer pipe (10) is connected to a filter (11), the upper end of the air intake outer pipe (10) is communicated with the air intake end of the heater (27), the air outlet end of the heater (27) is connected to an air intake main pipe (9), and the end of the air intake main pipe (9) away from the heater (27) passes through the side wall of the drying cylinder (1) and is communicated with the drying cylinder (1).

3. The powder drying device for preparing LATP electrolyte according to claim 2, characterized in that: An intake branch pipe (8) is fixedly connected to the side wall of the intake main pipe (9), and one end of the intake branch pipe (8) away from the intake main pipe (9) passes through the outer feeding pipe (6) and is in communication with the outer feeding pipe (6).

4. The powder drying device for preparing LATP electrolyte according to claim 2, characterized in that: The heat transfer mechanism comprises a circulating water tank (18), a circulating water pump (19), a second heat exchange outer cylinder (23), two first heat exchange outer cylinders (21), a connecting pipe (22) and a second connecting pipe (24), wherein the two first heat exchange outer cylinders (21) are respectively sleeved on the outsides of the two temporary storage pipes (12), the second heat exchange outer cylinder (23) is sleeved on the air intake outer pipe (10), the input end of the circulating water pump (19) is in communication with the circulating water tank (18), and the output end of the circulating water pump (19) is fixedly connected to the water intake pipe (2 0), the end of the water inlet pipe (20) away from the circulating water pump (19) passes through the side wall of the left heat exchange outer cylinder (21) and is connected to the left heat exchange outer cylinder (21), the two heat exchange outer cylinders (21) are connected through a connecting pipe (22), the right heat exchange outer cylinder (21) and the heat exchange outer cylinder (23) are connected through a connecting pipe (24), and a return pipe (25) is fixedly connected to the side wall of the heat exchange outer cylinder (23), and the end away from the return pipe (25) is connected to the circulating water tank (18).

5. The powder drying device for preparing LATP electrolyte according to claim 2, characterized in that: A temperature detection sensor (26) is provided in the intake manifold (9).

6. The powder drying device for preparing LATP electrolyte according to claim 1, characterized in that: A storage inner cylinder (15) is provided on the inner side of the data storage outer cylinder (14); a pressure detection sensor (16) is fixedly connected to the lower end of the storage inner cylinder (15); the lower end of the pressure detection sensor (16) is fixedly connected to the lower inner wall of the storage outer cylinder (14); an alarm (17) is provided on the outer wall of the storage outer cylinder (14); and the pressure detection sensor (16) is connected to the alarm (17) through a controller.

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