Drying equipment for processing composite negative electrode material
By employing a multi-drying tray and stirring assembly design in the composite negative electrode material drying device, combined with anti-clogging and dehumidification components, the problem of uneven heating caused by graphite accumulation was solved, achieving uniform drying and efficient material handling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HUAYUXIANG NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-05
AI Technical Summary
In existing drying equipment used for the production of composite anode materials, graphite tends to accumulate, leading to uneven heating of the material and making it difficult to ensure uniform drying.
The design incorporates multiple drying trays and stirring components, along with anti-clogging and dehumidifying components. The stirring rods enable the material to be dried in stages, while the anti-clogging components unclog the feed chute and the dehumidifying components absorb moisture, ensuring uniform heating and drying effects.
This method achieves uniform heating and drying of materials, avoids clogging of the feed chute by uncooked material lumps, and improves drying efficiency and quality.
Smart Images
Figure CN224202080U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of anode material drying equipment, and particularly relates to a drying equipment for processing composite anode materials. Background Technology
[0002] Composite anode materials refer to materials composed of two or more materials with different compositions, structures, or functions, combined through a specific preparation process, and used as battery anodes. These different materials, after being combined, can leverage their respective advantages and work synergistically to improve the performance of the battery anode, such as increasing specific capacity, improving cycle stability, and enhancing charge-discharge efficiency. For example, the common silicon-carbon-graphite composite anode material combines silicon and carbon materials (such as graphite). Existing drying equipment for composite anode material production has significant drawbacks: during the drying process, graphite is prone to accumulation, leading to uneven heating of the material and making it difficult to ensure uniform drying. Utility Model Content
[0003] Based on the above background, the purpose of this utility model is to provide a drying device for processing composite negative electrode materials.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A drying device for processing composite negative electrode materials, including a drying drum;
[0006] The drying drum is equipped with multiple drying trays, which are evenly distributed in a linear array along the axis of the drying drum, and heating blocks are provided inside the drying trays.
[0007] The drying tray has multiple feeding slots, and the feeding slots of adjacent drying trays are staggered.
[0008] The drying drum is equipped with a stirring assembly, which includes a rotating shaft.
[0009] The rotating shaft passes through the drying tray and is coaxially arranged with the drying drum. The two ends of the rotating shaft are rotatably connected to the top and bottom of the drying drum, respectively. The upper end of the rotating shaft extends out of the drying drum and is connected to the output end of the first motor.
[0010] The rotating shaft is provided with a first stirring rod on its side, and the first stirring rod is rotatably mounted on the surface of the drying tray.
[0011] The first stirring rod is fitted with a second stirring rod, and the second stirring rod is provided with a third stirring rod on both sides. The first stirring rod is provided with a sliding groove on both sides, and one end of the third stirring rod extends out of the sliding groove and slides against the surface of the drying tray.
[0012] The rotating shaft is equipped with multiple anti-clogging components, which are located below the corresponding drying trays and are used to unclog the feed troughs of the corresponding drying trays.
[0013] The top of the drying drum is equipped with a dehumidification component, which is connected to the inside of the drying drum and is used to absorb the water vapor generated in the drying process inside the drying drum.
[0014] The drying drum is equipped with a feed hopper at the top and a discharge hopper at the bottom.
[0015] Through the above technical solution, after the material is fed from the hopper into the feeding barrel, it falls onto the uppermost drying tray. The first motor drives the rotating shaft to rotate. During the drying process on the drying tray, the first stirring rod flattens and stirs the material on the drying tray at the same time. The third stirring rods on both sides of the second stirring rod stir along the circumference of the rotating tray. While flattening and stirring, the material at the bottom of the drying tray falls onto the lower drying tray for drying and stirring as it passes through the discharge chute. This process is repeated to dry the material step by step, and finally it falls to the bottom of the drying barrel and is discharged from the discharge hopper. During the drying process, the anti-blocking component periodically unclogs the discharge chute to prevent undried material from clumping due to excessive moisture. The dehumidifying component circulates the air in the drying barrel to absorb the moisture generated during drying, thereby improving the drying effect.
[0016] Furthermore, the third stirring rod has a folded structure.
[0017] Furthermore, the second stirring rod is slidably connected to the first stirring rod;
[0018] The first stirring rod is equipped with a spring inside, one end of which is fixed inside the first stirring rod, and the other end is connected to the end of the second stirring rod;
[0019] The end of the second stirring rod that extends out of the first stirring rod is arc-shaped and abuts against the inner wall of the drying drum;
[0020] The inner wall of the drying drum is provided with protrusions, which are arc-shaped and located above the drying tray.
[0021] With the above technical solution, when the first stirring rod rotates to the protrusion, the second stirring rod squeezes the spring under the arc of the protrusion, and drives the third stirring rod to slide in the sliding groove. When the second stirring rod disengages from the protrusion, the elastic force of the spring causes the second stirring rod to move in the first stirring rod, and drives the third stirring rod to move in the radial direction of the drying tray to stir the material.
[0022] Furthermore, the anti-clogging component includes a reciprocating threaded sleeve, and the side of the rotating shaft is provided with a reciprocating screw thread. The reciprocating screw thread is located below the drying tray, and the reciprocating threaded sleeve is fitted onto the reciprocating screw thread position of the rotating shaft and is threadedly connected to the rotating shaft.
[0023] The reciprocating threaded sleeve is provided with a connecting rod, and the connecting rod is provided with an anti-blocking block, which corresponds to the feeding groove of the drying tray above.
[0024] Furthermore, both the top of the connecting rod and the anti-blocking block are triangular.
[0025] Through the above technical solution, under the rotation of the rotating shaft, the reciprocating thread sleeve moves up and down along the axial direction of the rotating shaft, and the anti-blocking block is inserted into the corresponding feed chute to unclog the feed chute and prevent it from becoming blocked.
[0026] Furthermore, the bottom of the drying tray is provided with a guide rod, which is inverted T-shaped, and the lower end of the guide rod passes through the bottom of the connecting rod and is slidably connected to the connecting rod.
[0027] Through the above technical solution, the guide rod plays a limiting role in the connecting rod, ensuring that the guide rod and the reciprocating threaded sleeve can move up and down, and preventing them from rotating with the rotating shaft.
[0028] Furthermore, the dehumidification assembly includes a circulation tank, which is located on top of the drying tank;
[0029] The circulating tank is equipped with a desiccant.
[0030] A fan is installed inside the circulation tank, and a second motor is installed outside the circulation tank. The output end of the second motor is connected to the fan.
[0031] The bottom of the circulation tank is connected to the inside of the drying tank through an air inlet pipe and an air outlet pipe;
[0032] The air inlet pipe and the air outlet pipe are located on both sides of the desiccant, with the air outlet pipe located on the side closer to the fan.
[0033] Through the above technical solution, the second motor drives the fan to rotate and create negative pressure. The air in the drying drum enters the circulation drum through the air inlet pipe. After the desiccant absorbs the moisture in the air, it returns to the drying drum through the air outlet pipe. This can avoid heat loss and improve the drying quality.
[0034] Furthermore, a filter screen is provided at the end of the air inlet pipe that connects to the drying barrel.
[0035] The above technical solution prevents dust from entering the circulation tank.
[0036] Furthermore, a heating block is provided in the inner wall of the drying drum.
[0037] The above technical solutions improve the temperature rise efficiency of the drying drum.
[0038] This utility model has the following beneficial effects:
[0039] 1. After the material is fed from the hopper into the feeding barrel, it falls onto the uppermost drying tray. The first motor drives the rotating shaft to rotate. During the drying process, the first stirring rod flattens and stirs the material on the drying tray, while the second stirring rod and the third stirring rod on both sides stir along the circumference of the rotating tray. While flattening and stirring, the material at the bottom of the drying tray falls onto the lower drying tray for drying and stirring as it passes through the discharge chute. This process is repeated to dry the material step by step, and finally it falls to the bottom of the drying barrel and is discharged from the discharge hopper. This avoids material accumulation, ensures uniform heating, and facilitates better drying.
[0040] 2. During the drying process, the anti-clogging component periodically unclogs the feeding chute to prevent undried material from clumping due to excessive moisture. The dehumidifying component circulates the air in the drying drum to absorb the moisture generated during drying, thereby improving the drying effect. Attached Figure Description
[0041] 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 the structures shown in these drawings without creative effort.
[0042] Figure 1 This is a schematic diagram of the internal structure of the present invention;
[0043] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0044] Figure 3 This is a schematic diagram of the internal structure of the circulation tank of this utility model;
[0045] Figure 4 This is a partially cutaway three-dimensional structural diagram of the drying drum of this utility model.
[0046] Among them: 1. Drying drum; 11. Feed hopper; 12. Discharge hopper; 13. Protrusion;
[0047] 2. Drying tray; 21. Feeding trough;
[0048] 3. Rotating shaft; 31. First motor; 32. First stirring rod; 33. Sliding groove; 34. Second stirring rod; 35. Third stirring rod; 36. Spring;
[0049] 4. Reciprocating threaded sleeve; 41. Connecting rod; 42. Anti-blocking block; 43. Guide rod;
[0050] 5. Circulation tank; 51. Desiccant; 52. Second motor; 53. Fan; 54. Inlet pipe; 55. Outlet pipe; 56. Filter screen. Detailed Implementation
[0051] 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.
[0052] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0053] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0054] like Figure 1-4As shown, a drying device for processing composite negative electrode materials includes a drying barrel 1; multiple drying trays 2 are provided inside the drying barrel 1, and the drying trays 2 are evenly distributed in a linear array along the axis of the drying barrel 1, and heating blocks are provided inside the drying trays 2; heating blocks are also provided inside the inner wall of the drying barrel 1, and multiple feeding troughs 21 are opened on the drying trays 2, with the feeding troughs 21 of adjacent drying trays 2 being staggered, wherein the feeding troughs 21 are irregularly distributed, and when passing through different feeding troughs 21, radial materials can fall into the drying trays 2 below. A stirring assembly is provided inside the drying barrel 1, and the stirring assembly includes a rotating shaft 3; the rotating shaft 3 passes through the drying trays 2 and is coaxially arranged with the drying barrel 1, and the two ends of the rotating shaft 3 are rotatably connected to the top and bottom of the drying barrel 1, respectively, and the upper end of the rotating shaft 3 extends out of the drying barrel 1 and is connected to the output end of a first motor 31; a first stirring rod 32 is provided on the side of the rotating shaft 3, and the first stirring rod 32 is rotatably disposed on the surface of the drying tray 2; a second stirring rod 34 is sleeved inside the first stirring rod 32, and the two ends of the second stirring rod 34 are... A third stirring rod 35 is provided on one side. Sliding grooves 33 are provided on both sides of the first stirring rod 32. One end of the third stirring rod 35 extends out of the sliding groove 33 and slides against the surface of the drying tray 2. The third stirring rod 35 has a folded structure. A second stirring rod 34 is slidably connected to the first stirring rod 32. A spring 36 is provided inside the first stirring rod 32. One end of the spring 36 is fixed inside the first stirring rod 32, and the other end is connected to the end of the second stirring rod 34. The second stirring rod 34 extends out of the first stirring rod 32. The end is arc-shaped and abuts against the inner wall of the drying barrel 1; the inner wall of the drying barrel 1 is provided with a protrusion 13, which is arc-shaped and located above the drying tray 2; the rotating shaft 3 is provided with multiple anti-blocking components, which are located below the corresponding drying tray 2 and are used to unclog the feed trough 21 of the corresponding drying tray 2; the top of the drying barrel 1 is provided with a dehumidification component, which is connected to the inside of the drying barrel 1 and is used to absorb the water vapor generated in the drying process inside the drying barrel 1; the top and bottom of the drying barrel 1 are respectively provided with a feed hopper and a discharge hopper 12.
[0055] After the material is fed from the feed hopper into the feed barrel 11, it falls onto the uppermost drying tray 2. The first motor 31 drives the rotating shaft 3 to rotate. During the drying process on the drying tray 2, the first stirring rod 32 spreads the material on the drying tray 2 and stirs it at the same time. The third stirring rods 35 on both sides of the second stirring rod 34 stir along the circumference of the rotating tray. When the first stirring rod 32 rotates to the protrusion 13, under the arc of the protrusion 13, the second stirring rod 34 squeezes the spring 36 and drives the third stirring rod 35 to slide in the sliding groove 33. When the second stirring rod 34 disengages from the protrusion 13, the elastic force of the spring 36 causes the second stirring rod 34 to move away from the first stirring rod 32. The material moves in the middle and drives the third stirring rod 35 to move radially in the drying tray 2, reciprocating and pushing the material. While spreading and stirring, the material at the bottom of the drying tray 2 falls to the drying tray 2 below when it passes through the feeding chute 21 for drying and stirring. This process is repeated to dry the material step by step, and finally it falls to the bottom of the drying barrel 1 and is discharged from the discharge hopper 12. During the drying process, the anti-blocking component periodically clears the feeding chute 21 to prevent undried material from clumping due to excessive moisture. The dehumidifying component circulates the air in the drying barrel 1 to absorb the moisture generated during drying, thereby improving the drying effect.
[0056] Specifically, the anti-clogging component includes a reciprocating threaded sleeve 4. A reciprocating screw thread is provided on the side of the rotating shaft 3, located below the drying tray 2. The reciprocating threaded sleeve 4 is fitted onto the reciprocating screw thread of the rotating shaft 3 and threadedly connected to it. A connecting rod 41 is provided on the reciprocating threaded sleeve 4, and an anti-clogging block 42 is provided on the connecting rod 41. The anti-clogging block 42 corresponds to the corresponding feed trough 21 of the upper drying tray 2. The tops of both the connecting rod 41 and the anti-clogging block 42 are triangular to prevent material accumulation. A guide rod 43 is provided at the bottom of the drying tray 2. The guide rod 43 is inverted T-shaped, and its lower end passes through the bottom of the connecting rod 41 and is slidably connected to it. Under the rotation of the rotating shaft 3 and the limiting action of the guide rod 43, the reciprocating threaded sleeve 4 moves up and down along the axis of the rotating shaft 3. The anti-clogging block 42 inserts into the corresponding feed trough 21, clearing the feed trough 21 and preventing blockage.
[0057] Specifically, the dehumidification assembly includes a circulation tank 5, which is located at the top of the drying tank 1. The circulation tank 5 contains a replaceable desiccant 51. A fan 53 is located inside the circulation tank 5, and a second motor 52 is located on the outside of the circulation tank 5, with the output of the second motor 52 connected to the fan 53. The bottom of the circulation tank 5 is connected to the interior of the drying tank 1 via an inlet pipe 54 and an outlet pipe 55. The inlet pipe 54 and outlet pipe 55 are located on both sides of the desiccant 51, with the outlet pipe 55 located closer to the fan 53. A filter screen 56 is located at the end of the inlet pipe 54 connected to the drying tank 1. The second motor 52 drives the fan 53 to rotate, creating a negative pressure. Air from the drying tank 1 enters the circulation tank 5 through the inlet pipe 54. After the desiccant 51 absorbs moisture from the air, it returns to the drying tank 1 through the outlet pipe 55, thus preventing heat loss and improving the drying quality.
[0058] The working principle of this utility model is as follows: After the material is fed from the feed hopper into the feed barrel 11, it falls onto the uppermost drying tray 2. The first motor 31 drives the rotating shaft 3 to rotate. During the drying process of the drying tray 2, the first stirring rod 32 spreads the material on the drying tray 2 and stirs it at the same time. The third stirring rods 35 on both sides of the second stirring rod 34 stir along the circumference of the rotating tray. When the first stirring rod 32 rotates to the protrusion 13, under the arc compression of the protrusion 13, the second stirring rod 34 compresses the spring 36 and drives the third stirring rod 35. Sliding in the sliding groove 33, when the second stirring rod 34 disengages from the protrusion 13, the elastic force of the spring 36 causes the second stirring rod 34 to move in the first stirring rod 32, and drives the third stirring rod 35 to move in the radial direction of the drying tray 2, reciprocating and pushing the material. While spreading and stirring, the material at the bottom of the drying tray 2 falls into the drying tray 2 below when passing through the feeding chute 21 for drying and stirring. This process is repeated to dry the material step by step, and finally it falls into the bottom of the drying barrel 1 and is discharged from the discharge hopper 12.
[0059] During the drying process, under the rotation of the rotating shaft 3 and the limiting action of the guide rod 43, the reciprocating thread sleeve 4 moves up and down periodically along the axial direction of the rotating shaft 3. When it moves to the bottom of the drying tray 2, the anti-blocking block 42 is inserted into the corresponding feeding trough 21 to clear the feeding trough 21 and prevent it from becoming blocked. The second motor 52 drives the fan 53 to rotate and form a negative pressure. The air in the drying drum 1 enters the circulation drum 5 through the air inlet pipe 54. After the desiccant 51 absorbs the moisture in the air, it returns to the drying drum 1 through the air outlet pipe 55, which can avoid heat loss and improve the drying quality.
[0060] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A drying device for processing composite negative electrode materials, comprising a drying drum (1), characterized in that: The drying drum (1) is provided with multiple drying trays (2), which are evenly distributed in a linear array along the axis of the drying drum (1), and heating blocks are provided inside the drying trays (2); The drying tray (2) is provided with multiple feeding slots (21), and the feeding slots (21) of adjacent drying trays (2) are staggered. The drying drum (1) is equipped with a stirring assembly, which includes a rotating shaft (3). The rotating shaft (3) passes through the drying tray (2) and is coaxially arranged with the drying barrel (1). The two ends of the rotating shaft (3) are rotatably connected to the top and bottom of the drying barrel (1) respectively. The upper end of the rotating shaft (3) extends out of the drying barrel (1) and is connected to the output end of the first motor (31). The rotating shaft (3) is provided with a first stirring rod (32) on its side, and the first stirring rod (32) is rotatably disposed on the surface of the drying tray (2); The first stirring rod (32) is fitted with a second stirring rod (34), and the second stirring rod (34) is provided with a third stirring rod (35) on both sides. The first stirring rod (32) is provided with a sliding groove (33) on both sides. One end of the third stirring rod (35) extends out of the sliding groove (33) and slides against the surface of the drying tray (2). The second stirring rod (34) is slidably connected to the first stirring rod (32); The first stirring rod (32) is provided with a spring (36) inside. One end of the spring (36) is fixed inside the first stirring rod (32), and the other end is connected to the end of the second stirring rod (34). The end of the second stirring rod (34) extending out of the first stirring rod (32) is arc-shaped and abuts against the inner wall of the drying barrel (1); The inner wall of the drying drum (1) is provided with a protrusion (13), which is arc-shaped and located above the drying tray (2); The rotating shaft (3) is provided with multiple anti-blocking components. The anti-blocking components are located below the corresponding drying tray (2) and are used to unclog the feed chute (21) of the corresponding drying tray (2). The top of the drying barrel (1) is provided with a dehumidification component, which is connected to the inside of the drying barrel (1) and is used to absorb the water vapor generated in the drying barrel (1) during the drying process. The drying barrel (1) is provided with a feed hopper (11) at the top and a discharge hopper (12) at the bottom.
2. The drying equipment for processing composite negative electrode materials according to claim 1, characterized in that: The third stirring rod (35) has a folded structure.
3. The drying equipment for processing composite negative electrode materials according to claim 1, characterized in that: The anti-clogging component includes a reciprocating threaded sleeve (4), and the side of the rotating shaft (3) is provided with a reciprocating screw thread. The reciprocating screw thread is located below the drying tray (2). The reciprocating threaded sleeve (4) is fitted on the reciprocating screw thread position of the rotating shaft (3) and is threadedly connected to the rotating shaft (3). The reciprocating thread sleeve (4) is provided with a connecting rod (41), and the connecting rod (41) is provided with an anti-blocking block (42). The anti-blocking block (42) corresponds to the feeding groove (21) of the corresponding upper drying tray (2).
4. The drying equipment for processing composite negative electrode materials according to claim 3, characterized in that: The tops of both the connecting rod (41) and the anti-blocking block (42) are triangular.
5. The drying equipment for processing composite negative electrode materials according to claim 4, characterized in that: The bottom of the drying tray (2) is provided with a guide rod (43), which is inverted T-shaped, and the lower end of the guide rod (43) passes through the bottom of the connecting rod (41) and is slidably connected with the connecting rod (41).
6. The drying equipment for processing composite negative electrode materials according to claim 1, characterized in that: The dehumidification assembly includes a circulation tank (5), which is located on top of the drying tank (1); The circulating tank (5) is equipped with a desiccant (51); A fan (53) is provided inside the circulation tank (5), and a second motor (52) is provided on the outside of the circulation tank (5). The output end of the second motor (52) is connected to the fan (53). The bottom of the circulating tank (5) is connected to the inside of the drying tank (1) through the air inlet pipe (54) and the air outlet pipe (55); The air inlet pipe (54) and the air outlet pipe (55) are located on both sides of the desiccant (51), and the air outlet pipe (55) is located on the side closer to the fan (53).
7. The drying equipment for processing composite negative electrode materials according to claim 6, characterized in that: A filter screen (56) is provided at one end of the air inlet pipe (54) that is connected to the drying barrel (1).
8. The drying equipment for processing composite negative electrode materials according to any one of claims 1-7, characterized in that: The drying drum (1) has a heating block in its inner wall.