A lithium battery material circulating spray dryer

Abstract

The utility model discloses a lithium battery material circulation spray drying machine relates to spray drying technical field, and this utility model discloses a hot -blast distribution device, the hot -blast distribution device bottom is equipped with drying cylinder, and the drying cylinder bottom is equipped with the leakage net light vibration device, and the leakage net light vibration device outer wall is equipped with the screen fast -detachable device, and the leakage net light vibration device is just below the cooperation of the discharge cylinder of drying cylinder, and the drying cylinder outer wall one side is equipped with the heat source generating device, and the leakage net light vibration device includes the fixed column type frame of inserting shell cylinder, and inserting shell cylinder sliding installation is in drying cylinder bottom end inside, the utility model discloses a leakage net light vibration device sets up, makes servo motor start, and the drive end is driven end through the transmission link and drives the meshing transmission of driving wheel and passive wheel, makes the intermittent rotation of connecting rod and passive wheel, through the linkage of short link, transmission link, long link, drives the vertical reciprocating vibration of screen along guide groove, realizes the effect of the intermittent cleaning of filter screen through above -mentioned operation, and the product production quality and efficiency have been improved.

Description

Technical Field

[0001] This utility model relates to the field of spray drying technology, specifically a circulating spray dryer for lithium battery materials. Background Technology

[0002] The powder characteristics of lithium battery materials directly determine the energy density, cycle life and safety performance of lithium batteries. The drying process is the core process for converting lithium battery materials from slurry into qualified powder. Circulating spray dryers have become key equipment for the large-scale preparation of lithium battery materials because they can achieve precise drying through "powder circulation and efficient utilization of hot air". However, the drying equipment in the industry still has many technical pain points and cannot meet the high requirements of material preparation. In actual production applications, during auxiliary feeding, materials gradually accumulate on the filter screen mesh and surface, causing filter screen blockage. Severe blockage can completely block the material falling channel, forcing the equipment to stop for cleaning. Since lithium battery material production is mostly a continuous operation, downtime will directly cause output loss and production plan delays, resulting in reduced product production efficiency. Secondly, the sieving accuracy of the worn screen decreases, making it impossible to effectively separate the dried agglomerated material, resulting in large particle impurities mixed into the finished product, affecting the uniformity of subsequent lithium battery electrode preparation, thus reducing product quality. To address the above problems, the inventors have proposed a circulating spray dryer for lithium battery materials to solve these issues. Utility Model Content

[0003] In order to solve the problems of equipment downtime and reduced screening accuracy caused by filter clogging, the purpose of this utility model is to provide a circulating spray dryer for lithium battery materials.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a circulating spray dryer for lithium battery materials, including a hot air distribution device, a drying cylinder at the bottom of the hot air distribution device, a screen vibration device at the bottom of the drying cylinder, a screen quick-release device on the outer wall of the screen vibration device, a discharge cylinder for use with the drying cylinder directly below the screen vibration device, and a heat source generating device on one side of the outer wall of the drying cylinder.

[0005] Preferably, the mesh-slip vibration device includes an insertable outer shell and a fixed column frame. The insertable outer shell is slidably installed inside the bottom end of the drying cylinder, and the fixed column frame is fixedly installed inside the insertable outer shell. A servo motor is fixedly installed on one side of the inner wall of the fixed column frame. The drive end of the servo motor is driven by a transmission rod and a drive wheel is installed. A fixed frame is fixedly installed inside the fixed column frame. A connecting rod is rotatably installed through the top of the fixed frame, and one end of the connecting rod is rotatably connected to the inner wall of the fixed column frame. A driven wheel that cooperates with the drive wheel is fixedly installed on the outer wall of the connecting rod, and the other end of the connecting rod is fixedly installed with... It is equipped with a short rod, the other end of which is rotatably mounted with a transmission rod. The bottom end of the transmission rod is rotatably mounted with a long rod, which slides through the bottom of the fixed column frame. A screen is fixedly mounted at the bottom end of the long rod. Two symmetrically distributed connecting rods are fixedly and slidably mounted on the top of the screen, and the other ends of the two connecting rods slide along the inner wall of the bottom of the fixed column frame. A return spring is sleeved on the outer wall of each of the two connecting rods, and the two ends of the return spring are fixedly connected to the bottom of the fixed column frame and the top of the screen, respectively. Guide grooves are opened on both sides of the inner side of the insert shell cylinder to cooperate with the vertical sliding of the screen, and the screen fits tightly with the inner wall of the guide groove.

[0006] Preferably, the quick-release device for the screen includes a stop seat, which is fixedly installed on the outer walls of both sides of the drying cylinder. A rotating arm is rotatably installed inside the stop seat, and a drive arm is rotatably installed at the bottom end of the rotating arm. Fixed supports that cooperate with the drive arm are fixedly installed on both outer walls of the insert-outer shell cylinder. The fixed supports have slots inside, and the drive arm fits tightly against the inner wall of the slot. A limit pin is installed at the top of the drive arm through a threaded connection. Two O-rings are equidistantly distributed on the outer wall of the top of the insert-outer shell cylinder, and the two O-rings fit tightly against the inner wall of the drying cylinder.

[0007] Preferably, a conveying pipe is installed through the top of the heat source generating device, and the other end of the conveying pipe is connected through to the hot air distribution device.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model sets up a screen vibration device to start the servo motor. The drive end drives the active wheel and the passive wheel to mesh and transmit through the transmission rod, so that the connecting rod and the passive wheel rotate intermittently. Through the linkage of the short rod, the transmission rod and the long rod, the screen is driven to vibrate vertically along the guide groove. The above operation achieves the effect of intermittent cleaning of the filter screen, which improves the product production quality and efficiency. 2. This utility model, by setting a quick-release device for the screen, allows the insertable outer casing to slide up to a suitable position. Rotating the rotating arm causes the drive arm to engage in the slot inside the fixed support. Turning the limit pin to the left completes the locking. When the limit pin is turned to the right, rotating the rotating arm causes the drive arm to disengage from the inner wall of the slot, completing the disassembly. Through the above operations, the filter screen can be quickly disassembled and repaired, improving work efficiency and product quality. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the side cross-section structure of the plug-in outer shell of this utility model; Figure 3 This is a side-section structural diagram of the mesh-leaking light vibration device of this utility model; Figure 4 This is a schematic diagram of the side structure of the connecting rod of this utility model; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the overall structure of the quick-release screen device of this utility model; Figure 7 This is a schematic diagram of the side structure of the O-ring seal of this utility model; Figure 8 This is a side view of the quick-release screen device of this utility model; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point B.

[0011] In the diagram: 1. Hot air distribution device; 2. Drying cylinder; 3. Screen vibrating device; 31. Insertable outer shell; 32. Fixed column frame; 33. Servo motor; 34. Drive wheel; 35. Fixed frame; 36. Connecting rod; 37. Driven wheel; 38. Short rod; 39. Transmission rod; 310. Long rod; 311. Screen; 312. Connecting rod; 313. Return spring; 4. Screen quick release device; 41. Stop seat; 42. Rotating arm; 43. Drive arm; 44. Fixed support; 45. Limit pin; 46. O-ring seal; 5. Discharge cylinder; 6. Heat source generating device; 7. Conveying pipeline. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1-9 As shown, this utility model provides a circulating spray dryer for lithium battery materials, including a hot air distribution device 1, a drying cylinder 2 at the bottom of the hot air distribution device 1, a screen vibration device 3 at the bottom of the drying cylinder 2, a screen quick-release device 4 on the outer wall of the screen vibration device 3, a discharge cylinder 5 for use with the drying cylinder 2 directly below the screen vibration device 3, and a heat source generating device 6 on one side of the outer wall of the drying cylinder 2. The leaky mesh vibration device 3 includes an insertable outer shell cylinder 31 and a fixed column frame 32. The insertable outer shell cylinder 31 is slidably installed inside the bottom end of the drying cylinder 2. The fixed column frame 32 is fixedly installed inside the insertable outer shell cylinder 31. A servo motor 33 is fixedly installed on one side of the inner wall of the fixed column frame 32. The drive end of the servo motor 33 is driven by a transmission rod and a drive wheel 34 is installed. A fixed frame 35 is fixedly installed inside the fixed column frame 32. A connecting rod 36 is rotatably installed through the top of the fixed frame 35, and one end of the connecting rod 36 is rotatably connected to the inner wall of the fixed column frame 32. A passive wheel 37 that cooperates with the drive wheel 34 is fixedly installed on the outer wall of the connecting rod 36.

[0014] By adopting the above technical solution, the servo motor 33 drives the active wheel 34 to rotate through the transmission rod. Since the active wheel 34 and the passive wheel 37 rotate and cooperate with each other, the passive wheel 37, which is fixedly installed on the outer wall of the connecting rod 36, will rotate periodically and intermittently.

[0015] The quick-release device 4 for the screen includes a stop seat 41, which is fixedly installed on the outer walls of both sides of the drying cylinder 2. A rotating arm 42 is rotatably installed inside the stop seat 41, and a drive arm 43 is rotatably installed at the bottom of the rotating arm 42. Fixed supports 44 that cooperate with the drive arm 43 are fixedly installed on both sides of the outer walls of the insert-in outer casing 31.

[0016] By adopting the above technical solution, the rotating arm 42 and the drive arm 43 are rotated to make the drive arm 43 accurately engage in the slot inside the fixed support 44, thereby achieving rapid disassembly of the screen, reducing equipment downtime and improving production efficiency.

[0017] The fixed support 44 has a slot inside, and the drive arm 43 fits tightly against the inner wall of the slot. The top of the drive arm 43 is connected to a limit pin 45 by a threaded connection.

[0018] By adopting the above technical solution, the drive arm 43 and the slot opened inside the fixed support 44 fit tightly together, effectively preventing material leakage and equipment failure due to connection failure when the mesh-leaking vibration device 3 is working.

[0019] A short rod 38 is fixedly installed at the other end of the connecting rod 36, and a transmission rod 39 is rotatably installed at the other end of the short rod 38. A long rod 310 is rotatably installed at the bottom end of the transmission rod 39, and the long rod 310 slides through the bottom of the fixed column frame 32.

[0020] By adopting the above technical solution, when the connecting rod 36 rotates, it synchronously drives the short rod 38 and the transmission rod 39 to rotate, and at the same time converts the rotational motion into the vertical reciprocating motion of the long rod 310, ensuring the smoothness of the transmission.

[0021] A screen 311 is fixedly installed at the bottom of the long rod 310. Two symmetrically distributed connecting rods 312 are fixedly and slidably installed on the top of the screen 311. The other ends of the two connecting rods 312 slide along the inner wall of the bottom of the fixed column frame 32. A return spring 313 is sleeved on the outer wall of the two connecting rods 312. The two ends of the return spring 313 are fixedly connected to the bottom of the fixed column frame 32 and the top of the screen 311, respectively.

[0022] By adopting the above technical solution, the bottom end of the long rod 310 is fixedly connected to the top of the screen 311. When the long rod 310 slides vertically, it synchronously drives the screen 311 to vibrate up and down. The two symmetrically distributed connecting rods 312 form a constraint, which restricts the movement direction of the screen 311.

[0023] The inner sides of the plug-in outer casing 31 are provided with guide grooves for vertical sliding cooperation with the screen 311, and the screen 311 is tightly fitted with the inner wall of the guide groove.

[0024] By adopting the above technical solution, the screen 311 slides tightly against the inner wall of the guide groove, ensuring that the screen 311 reciprocates in the vertical direction and preventing the screen 311 from shifting during vibration.

[0025] Two O-rings 46 are equidistantly distributed on the outer wall of the top of the insert outer shell cylinder 31, and the two O-rings 46 are tightly fitted to the inner wall of the drying cylinder 2.

[0026] By adopting the above technical solution, the O-ring 46 is tightly attached to the inner wall of the drying cylinder 2, which can prevent materials from leaking out from the gaps, avoid external pollutants from entering the drying system through the gaps, and ensure the purity of lithium battery materials.

[0027] A conveying pipe 7 is installed through the top of the heat source generating device 6, and the other end of the conveying pipe 7 is connected through the hot air distribution device 1.

[0028] By adopting the above technical solution, the conveying pipe 7 accurately delivers hot air to the inside of the hot air distribution device 1. After being processed by the hot air distribution device 1, the hot air is delivered to the inside of the drying cylinder 2, effectively ensuring the uniformity of the dryness of the lithium battery material particles.

[0029] Working principle: In actual production application, the hot air generated by the heat source generating device 6 is transported to the inside of the hot air distribution device 1 through the conveying pipe 7. The hot air distribution device 1 evenly disperses the hot air into the inside of the drying cylinder 2. After the lithium battery material is atomized by the atomizer, it comes into contact with the hot air and dries into particles. After being screened by the screen light vibration device 3, the material falls into the discharge cylinder 5 to complete the collection. When intermittent vibration cleaning of the screen is required, such as Figure 2 , Figure 3 and Figure 4 As shown, the servo motor 33 starts, and its drive end drives the active wheel 34 to rotate synchronously through the transmission rod. When rotating, the active wheel 34 meshes with the passive wheel 37, which in turn drives the passive wheel 47 fixedly installed on the outer wall of the connecting rod 36 to rotate intermittently. When the connecting rod 36 rotates, the short rod 38, the transmission rod 39, and the long rod 310 are linked in sequence, which synchronously drives the screen 311 to vibrate vertically and reciprocally along the guide groove opened inside the insert outer shell cylinder 31. When the screen 311 vibrates, the return spring 313 undergoes elastic deformation under external force, which in turn drives the screen 311 to return to its original position, thus completing the vibration cleaning of the screen 311. When quick replacement or repair of the screen is required, combined with Figure 8 , Figure 9 As shown, the insertable outer casing 31 slides vertically upward along the inner wall of the drying cylinder 2. When it slides to the appropriate position, the rotating arm 42 is rotated, which drives the drive arm 43 to precisely engage in the slot opened inside the fixed support 44. Since the limit pin 45 is connected to the drive arm 43 by threads, rotating the limit pin 45 to the left achieves mechanical locking, completing the quick installation of the screen. To unlock, first rotate the limit pin 45 to the right to disengage the limit pin 45 from the top of the drive arm 43, and then rotate the rotating arm 42 to drive the drive arm 43 to disengage from the slot inside the fixed support 44, completing the quick disassembly and maintenance of the screen.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A circulating spray dryer for lithium battery materials, comprising a hot air distribution device (1), characterized in that: The hot air distribution device (1) is provided with a drying cylinder (2) at the bottom. The drying cylinder (2) is provided with a screen vibration device (3) at the bottom. The screen vibration device (3) is provided with a screen quick-release device (4) on the outer wall. The screen vibration device (3) is provided with a discharge cylinder (5) that works with the drying cylinder (2) directly below it. The drying cylinder (2) is provided with a heat source generator (6) on one side of the outer wall. The leaky mesh vibration device (3) includes an insertable outer shell cylinder (31) and a fixed column frame (32). The insertable outer shell cylinder (31) is slidably installed inside the bottom end of the drying cylinder (2). The fixed column frame (32) is fixedly installed inside the insertable outer shell cylinder (31). A servo motor (33) is fixedly installed on one side of the inner wall of the fixed column frame (32). The drive end of the servo motor (33) is driven by a transmission rod and a drive wheel (34) is installed. A fixed frame (35) is fixedly installed inside the fixed column frame (32). A connecting rod (36) is rotatably installed through the top of the fixed frame (35). One end of the connecting rod (36) is rotatably connected to the inner wall of the fixed column frame (32). A passive wheel (37) that works with the drive wheel (34) is fixedly installed on the outer wall of the connecting rod (36).

2. The lithium battery material circulating spray dryer as described in claim 1, characterized in that, The quick-release device (4) for the screen includes a stop seat (41), which is fixedly installed on the outer walls of both sides of the drying cylinder (2). A rotating arm (42) is rotatably installed inside the stop seat (41), and a driving arm (43) is rotatably installed at the bottom end of the rotating arm (42). Fixed supports (44) that cooperate with the driving arm (43) are fixedly installed on both sides of the outer walls of the plug-in outer shell cylinder (31).

3. A circulating spray dryer for lithium battery materials as described in claim 2, characterized in that, The fixed support (44) has a slot inside, and the drive arm (43) fits tightly against the inner wall of the slot. The top of the drive arm (43) is connected to a limit pin (45) by a thread.

4. A circulating spray dryer for lithium battery materials as described in claim 1, characterized in that, A short rod (38) is fixedly installed at the other end of the connecting rod (36), and a transmission rod (39) is rotatably installed at the other end of the short rod (38). A long rod (310) is rotatably installed at the bottom end of the transmission rod (39), and the long rod (310) slides through the bottom of the fixed column frame (32).

5. A circulating spray dryer for lithium battery materials as described in claim 4, characterized in that, A screen (311) is fixedly installed at the bottom of the long rod (310). Two symmetrically distributed connecting rods (312) are fixedly and slidably installed on the top of the screen (311). The other ends of the two connecting rods (312) slide along the inner wall of the bottom of the fixed column frame (32). A return spring (313) is sleeved on the outer wall of the two connecting rods (312). The two ends of the return spring (313) are fixedly connected to the bottom of the fixed column frame (32) and the top of the screen (311), respectively.

6. A circulating spray dryer for lithium battery materials as described in claim 1, characterized in that, The inner sides of the plug-in outer casing (31) are provided with guide grooves that are used to slide vertically with the screen (311), and the screen (311) is in close contact with the inner wall of the guide groove.

7. A circulating spray dryer for lithium battery materials as described in claim 1, characterized in that, The top outer wall of the plug-in outer shell (31) is fitted with two O-rings (46) that are equidistantly distributed, and the two O-rings (46) are tightly fitted with the inner wall of the drying cylinder (2).

8. A circulating spray dryer for lithium battery materials as described in claim 1, characterized in that, The heat source generating device (6) has a conveying pipe (7) installed through the top, and the other end of the conveying pipe (7) is connected through to the hot air distribution device (1).

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