Iron removal heating device for hard carbon negative electrode production line
By designing an iron removal heating device for hard carbon negative electrode production line, magnetic iron rods are used to remove iron impurities, and maintain constant temperature by heating drums and insulation cylinders, the problems of iron impurities removal and temperature difference during pre-carbonization are solved, and a more stable and efficient production of hard carbon negative electrode materials is achieved.
Patent Information
- Application Number
- CN202422507745.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-10-16
AI Technical Summary
During the pre-carbonization process of hard carbon negative electrode materials, iron impurities in the raw materials are difficult to remove, and the temperature difference between inside and outside the traditional pre-carbonization kiln is large, which affects the internal structure and energy consumption of the product.
An iron removal heating device for hard carbon negative electrode production line is designed, including a screw conveying mechanism, an iron removal mechanism, a heating drum and an insulation cylinder. The iron impurities are removed through magnetic iron rods, and the combination of the heating drum and an insulation cylinder is maintained to maintain a constant high temperature environment and reduce the influence of temperature difference.
Effectively remove iron impurities from raw materials, improve the internal structure of the product, reduce energy consumption and noise, and improve the stability of the pre-carbonization process.
Smart Images
Figure CN222978557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of production equipment for hard carbon anode materials, and particularly relates to an iron removal and heating device for a hard carbon anode production line. Background Art
[0002] Hard carbon is a kind of carbon that is difficult to graphitize even at temperatures above 2500°C. It is one of the main raw materials for preparing the anode material precursor. Mainly due to the disordered internal crystal arrangement and large interlayer spacing, these characteristics enable the hard carbon anode material to store more charges under the same volume, thereby improving the energy density and battery life of sodium-ion batteries. Due to different sources of precursor raw materials, the cost composition of hard carbon materials also varies significantly. For example, hard carbon prepared from biomass as a precursor performs well in terms of performance such as specific capacity and has a relatively low cost; while hard carbon prepared from synthetic polymers has good electrochemical performance but high cost; hard carbon prepared from fossil fuels has a low capacity and many factors increasing costs during the production process.
[0003] Currently, the main process route for industrial preparation of hard carbon anode materials is: raw material - pre-carbonization - purification - carbonization. Pre-carbonization is the primary high-temperature heating of raw materials. The existing pre-carbonization only performs heating, directly inputting the raw materials into the pre-carbonization kiln through a conveyor belt. Generally, the raw materials only undergo primary screening, and the iron impurities mixed in the raw materials will directly affect the internal structure of the product. Secondly, there is a large temperature difference between the inside and outside of the traditional pre-carbonization kiln, which not only consumes heat but also affects the pore structure of the product. Content of the Utility Model
[0004] The main purpose of the utility model is to solve the problems of iron impurities in the raw materials during pre-carbonization and the large temperature difference between the inside and outside during pre-carbonization.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] An iron removal and heating device for a hard carbon anode production line includes a base, a screw conveyor mechanism, an iron removal mechanism, a driving motor, a partition board, a heating drum, a heat preservation cylinder, and a discharge port. The screw conveyor mechanism, the partition board, and the heating drum are sequentially arranged on the upper part of the base from left to right. The iron removal mechanism is located above the screw conveyor mechanism. The driving motor is located on one side of the screw conveyor mechanism, and the output end of the driving motor is connected to the outer wall of the heating drum. The heating drum partially passes through the partition board, and the heating drum is sleeved inside the heat preservation cylinder. The discharge port is installed at the right end of the heat preservation cylinder. The iron removal mechanism can clean the iron-containing impurities in the conveyed raw materials.
[0007] Preferably, a guiding seat is further arranged in the middle of the partition board, and the inner wall of the guiding seat is in contact with the outer wall of the heating drum. The guiding seat mainly supports the heating drum.
[0008] Preferably, the screw conveyor mechanism includes a speed-regulating motor, a support base, a connecting frame, a feed pipe, a conveying pipe, a feed hopper, and a screw conveyor shaft. The support frame is installed on the base, and the left end of the support frame is fixedly installed with the connecting frame. The connecting frame is fixedly installed with the feed pipe. The upper part of the feed pipe is fixedly installed with the feed hopper, and the feed pipe communicates with the bottom of the feed hopper. The other end of the support base is fixedly installed with the conveying pipe, and one end of the feed pipe passes through the support base and communicates with the conveying pipe. The screw conveyor shaft passes through the feed pipe, the support base, and the conveying pipe respectively, and partially extends into the heating drum. The right end of the conveying pipe is movably connected to the left end of the heating drum.
[0009] Preferably, the iron removal mechanism includes a feed bin, a fixing plate, a rotating motor, a magnetic iron rod, a moving arm, and a track block. The feed bin is installed on the upper part of the feed hopper, and through holes are opened in the upper part and one side of the feed bin, and the inside is a central structure. A fixing plate is also arranged on one side of the feed bin. A rotating seat is arranged in the middle of the fixing plate. A number of magnetic iron rods are installed on one side of the rotating seat, and the other side of the rotating seat is connected to the output end of the rotating motor. Two track blocks are arranged at one end of the feed bin, and each track block is slidably connected to the moving arm. One end of each moving arm is connected to the fixing plate.
[0010] Preferably, a gear ring is arranged on the outer wall of the left end of the heating drum, and a number of paddles are arranged inside the heating drum. The gear ring cooperates with the output end of the driving motor to transmit the power of the driving motor to the heating drum. The heating drum rotates in the heat preservation cylinder, which is not only not affected by the external temperature difference, but also reduces the rotation noise.
[0011] Preferably, the partition board is a hollow structure with an upward opening, and a screw plug is installed on one side of the partition board.
[0012] Preferably, a limiting block is also arranged on the bottom plate, and the limiting block is located on both sides of the outer wall of the heat preservation cylinder.
[0013] Preferably, an air inlet pipe and an exhaust pipe are also arranged on the heat preservation cylinder. One end of the air inlet pipe is communicated with a heat source, and the other end extends into the heat preservation cylinder. A baffle is also arranged on the discharge port.
[0014] The beneficial effects of the present utility model;
[0015] 1. When the raw material passes through the feed bin, the rotating motor drives the rotating seat to rotate, and the rotating seat drives the magnetic iron rods to rotate in the feed bin. When the raw material passes through the gaps between the magnetic iron rods, the ferromagnetic impurities contained therein adhere to the magnetic iron rods. When replacement is needed, only the moving rod needs to be moved away from the track block, the magnetic iron rods are pulled out, and then the impurities on each magnetic iron rod are cleaned to achieve the separation effect.
[0016] 2. A heat source is provided into the heat preservation cylinder through the air inlet pipe. The heat source heats the rotating heating drum, avoiding the influence of temperature change on pre-carbonization. Secondly, the heat preservation cylinder reduces the noise generated by the rotation of the heating drum. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 FIG. is a three-dimensional structural schematic diagram of an iron removal and heating device for a hard carbon negative electrode production line;
[0018] Figure 2 FIG. is a top view structural schematic diagram of an iron removal and heating device for a hard carbon negative electrode production line;
[0019] Figure 3 FIG. is a side view structural schematic diagram of an iron removal and heating device for a hard carbon negative electrode production line;
[0020] Figure 4 is Figure 2 the sectional view structural schematic diagram along the line A-A in
[0021] Figure 5 FIG. is a structural schematic diagram of the iron removal mechanism;
[0022] In the figure: base 1, screw conveyor mechanism 2, iron removal mechanism 3, drive motor 4, partition 5, heating drum 6, heat preservation cylinder 7, discharge port 8, guide seat 9, gear ring 10, paddle 11, screw plug 12, limit block 13, air inlet pipe 14, exhaust pipe 15, baffle 16, speed regulation motor 20, support seat 21, connecting frame 22, feed pipe 23, conveying pipeline 24, feed hopper 25, screw conveyor shaft 26, feed bin 30, fixing plate 31, rotating motor 32, magnetic iron rod 33, moving arm 34 and track block 35. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0024] Embodiment 1: Referring to Figures 1-3 , an iron removal and heating device for a hard carbon negative electrode production line includes a base 1, a screw conveyor mechanism 2, an iron removal mechanism 3, a drive motor 4, a partition 5, a heating drum 6, a heat preservation cylinder 7 and a discharge port 8. The screw conveyor mechanism 2, the partition 5 and the heating drum 6 are sequentially arranged on the upper part of the base 1 from left to right. The iron removal mechanism 3 is located above the screw conveyor mechanism 2. The drive motor 4 is located on one side of the screw conveyor mechanism 2, and the output end of the drive motor 4 is connected to the outer wall of the heating drum 6. The heating drum 6 partially passes through the partition 5 and is sleeved inside the heat preservation cylinder 7. The discharge port 8 is installed at the right end of the heat preservation cylinder 7, and the discharge port 8 corresponds to the outlet of the heating drum 6.
[0025] A guide seat 9 is also arranged in the middle of the partition plate 5, and the inner wall of the guide seat 9 is in contact with the outer wall of the heating drum 6. The guide seat 9 not only supports the heating drum 6, but also can reduce the wear of the outer wall of the heating drum 6.
[0026] The screw conveyor mechanism 2 includes a speed-regulating motor 20, a support seat 21, a connecting frame 22, a feed pipe 23, a conveying pipe 24, a feeding hopper 25 and a screw conveyor shaft 26. The support frame 21 is installed on the base 1, and the left end of the support frame 21 is fixedly installed with the connecting frame 22. The feed pipe 23 is fixedly installed on the connecting frame 22. The feeding hopper 25 is fixedly installed on the upper part of the feed pipe 23, and the feed pipe 23 communicates with the bottom of the feeding hopper 25. The other end of the support seat 21 fixedly installs the conveying pipe 24, and one end of the feed pipe 23 passes through the support seat 21 and communicates with the conveying pipe 24. The screw conveyor shaft 26 passes through the feed pipe 23, the support seat 21 and the conveying pipe 24 respectively, and partially extends into the heating drum 6. The right end of the conveying pipe 24 is movably connected to the left end of the heating drum 6.
[0027] Conveying process:
[0028] After the iron removal mechanism 3 separates the ferromagnetic substances from the raw materials, the raw materials reach the inside of the feed pipe 23 through the feeding hopper 25. At this time, the speed-regulating motor 20 rotates, driving the screw conveyor shaft 26 to convey the raw materials from the feed pipe 23 and the conveying pipe 24 to the inside of the heating drum 6. The support seat 21 mainly plays a supporting role. The connecting end of the conveying pipe 24 and the heating drum 6 is movably connected, and the conveying pipe 24 will not rotate during the rotation of the heating drum 6.
[0029] The iron removal mechanism 3 includes a feed bin 30, a fixing plate 31, a rotating motor 32, magnetic iron rods 33, a moving arm 34 and a track block 35. The feed bin 30 is installed on the upper part of the feeding hopper 25, and round holes are opened in the upper part and one side of the feed bin 30, and its internal is a central structure. A fixing plate 31 is also arranged on one side of the feed bin 30. A rotating seat is arranged in the middle of the fixing plate 31. A number of magnetic iron rods 33 are installed on one side of the rotating seat. The other side of the rotating seat is connected to the output end of the rotating motor 32. Two track blocks 35 are arranged at one end of the feed bin 30. Each track block 35 is slidably connected to the moving arm 34. One end of each moving arm 34 is fixedly connected to one side of the fixing plate 31.
[0030] Iron removal process:
[0031] When the materials on the conveyor belt enter the feeding bin 30, the rotating motor 32 operates, causing the magnetic iron rod 33 to rotate within the feeding bin 30. The materials will fall through the gaps of the magnetic iron rod, and during the falling process, the ferromagnetic impurities mixed in the materials will be adsorbed onto the magnetic iron rod 33. When it is necessary to clean the impurities, move the moving arm 34 away from the track block 35, and then manually clean them one by one. After completion, push the fixing plate 31 to position the magnetic iron rod 33 inside the feeding bin 30, and then the next iron removal operation can be carried out.
[0032] Embodiment 2:
[0033] The difference from Embodiment 1 is that a gear ring 10 is provided on the outer wall of the left end of the heating drum 6, and a number of paddles 11 are provided inside the heating drum 6. The gear ring 10 transmits the power of the driving motor 4 to the heating drum 6, and during rotation, stirring is carried out through the paddles 11, making the heating more uniform.
[0034] The partition plate 5 is a hollow structure with an upward opening, and a screw plug 12 is installed on one side of the partition plate 5. High-temperature liquid can be filled inside the partition plate 5, which can reduce the heat loss at the end.
[0035] Limit blocks 13 are also provided on the bottom plate 1, and the limit blocks 13 are located on both sides of the heat preservation cylinder 7. The limit blocks 13 mainly play a fixing role.
[0036] An air inlet pipe 14 and an exhaust pipe 15 are also provided on the heat preservation cylinder 7. One end of the air inlet pipe 14 is connected to a heat source, and the other end extends into the heat preservation cylinder 7. During the process of the heat source heating the heating drum 6, the temperature change range of the heat source outside the heating drum 6 is small, which not only makes the pre-carbonization more stable but also reduces the noise during rotation. A baffle 16 is also provided on the discharge port 8, and the baffle 16 mainly functions during discharging.
[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.
Claims
1. A deironing and heating device for a hard carbon negative electrode production line, comprising a base (1), a screw conveying mechanism (2), a deironing mechanism (3), a driving motor (4), a partition (5), a heating roller (6), a heat preservation cylinder (7) and a discharge port (8), characterized in that: The upper part of the base (1) is provided with a screw conveying mechanism (2), a partition (5) and a heating roller (6) in sequence from left to right; the iron removal mechanism (3) is located on the upper part of the screw conveying mechanism (2); the drive motor (4) is located on one side of the screw conveying mechanism (2); and the output end of the drive motor (4) is connected to the outer wall of the heating roller (6); the heating roller (6) partially passes through the partition (5) and is sleeved inside the heat preservation cylinder (7); the discharge port (8) is installed at the right end of the heat preservation cylinder (7), and the discharge port (8) corresponds to the outlet of the heating roller (6).
2. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: A guide seat (9) is also arranged in the middle of the partition (5), and the inner wall of the guide seat (9) is in contact with the outer wall of the heating roller (6).
3. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: The screw conveying mechanism (2) comprises a speed regulating motor (20), a support seat (21), a connecting frame (22), a feed pipe (23), a conveying pipeline (24), a hopper (25) and a screw conveying shaft (26); the support seat (21) is mounted on the base (1); the connecting frame (22) is fixedly mounted on the left end of the support seat (21); the feed pipe (23) is fixedly mounted on the connecting frame (22); the hopper (25) is fixedly mounted on the upper part of the feed pipe (23); The feed pipe (23) is connected to the bottom of the feed hopper (25); the other end of the support seat (21) is fixed with the conveying pipe (24); one end of the feed pipe (23) passes through the support seat (21) and is connected to the conveying pipe (24); the spiral conveying shaft (26) passes through the feed pipe (23), the support seat (21) and the conveying pipe (24) respectively, and partially extends into the heating roller (6); the right end of the conveying pipe (24) is movably connected to the left end of the heating roller (6).
4. The iron removal and heating device for a hard carbon negative electrode production line according to claim 3, characterized in that: The iron removal mechanism (3) comprises a feed bin (30), a fixed plate (31), a rotating motor (32), a magnetic iron rod (33), a movable arm (34) and a track block (35). The feed bin (30) is installed on the upper part of the feed hopper (25), and through holes are provided on the upper part and one side of the feed bin (30), and the interior thereof is a central structure. A fixed plate (31) is also provided on one side of the feed bin (30), a rotating seat is provided in the middle of the fixed plate (31), a plurality of magnetic iron rods (33) are installed on one side of the rotating seat, and the other side of the rotating seat is connected to the output end of the rotating motor (32). Two track blocks (35) are provided at one end of the feed bin (30), each of the track blocks (35) is slidably connected to the movable arm (34), and one end of each movable arm (34) is fixedly connected to one side of the fixed plate (31).
5. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: A gear ring (10) is arranged on the outer wall of the left end of the heating roller (6), a plurality of paddles (11) are arranged inside the heating roller (6), and the gear ring (10) cooperates with the output end of the driving motor (4).
6. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: The partition (5) is a hollow structure with an opening facing upward, and a screw plug (12) is installed on one side of the partition (5).
7. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: The base (1) is also provided with a limit block (13), and the limit block (13) is located on both sides of the heat preservation cylinder (7).
8. The iron removal and heating device for a hard carbon negative electrode production line according to claim 1, characterized in that: An air inlet pipe (14) and an air exhaust pipe (15) are also provided on the heat preservation cylinder (7), and a baffle (16) is also provided on the discharge port (8).