Negative electrode material drying device

Abstract

The utility model relates to the technical field of lithium battery cathode materials, in particular to a cathode material drying device. Comprising a base and a roller, the roller is installed on the base through a rolling mechanism, a plurality of partition plates are evenly arranged on the inner wall of the roller, a first fixing cylinder and a second fixing cylinder are rotationally embedded in the two ends of the roller respectively, a feeding hopper is arranged at the top of the first fixing cylinder, and a heating mechanism is arranged on one side of the first fixing cylinder; one end of the heating mechanism is connected with a heating cylinder; the roller drives the cathode material to rotate and disperse the cathode material, the contact area of the heating cylinder and the cathode material is increased, the drying effect is improved, hot air in the heating cylinder is discharged through the air outlet by the air outlet pipe, the utilization rate of the hot air is improved, and the hot air makes contact with the cathode material, so that the drying effect is improved. The contact area and the dispersion degree of the negative electrode material and heat are further increased, and the drying uniformity is improved; vapor in damp and hot gas in the roller is discharged out of the roller through the condensation pipe and other structures, and the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of negative electrode materials for lithium batteries, and in particular to a negative electrode material drying device. Background Art

[0002] The negative electrode of a lithium battery is made of a paste-like adhesive mixed with negative electrode active carbon material or non-carbon material, a binder and an additive, which is evenly applied on both sides of the copper foil, dried and rolled. The negative electrode material is the main body of lithium storage in the lithium battery, allowing lithium ions to be embedded and released during the charging and discharging process. When the lithium battery is charging, the lithium atoms in the positive electrode are ionized into lithium ions and electrons, and the lithium ions move toward the negative electrode and synthesize lithium atoms with the electrons. When discharging, lithium atoms are ionized from the negative electrode surface in the graphite crystal into lithium ions and electrons, and synthesize lithium atoms at the positive electrode.

[0003] The graphite negative electrode material in the battery material is generally in powder form and is easily affected by moisture; therefore, before processing, the graphite negative electrode material needs to be dried to ensure its normal use. When the existing negative electrode material drying device is drying the negative electrode material, the negative electrode material is mostly placed directly into the drying device for drying, and is in a static state throughout the process, making it difficult to dry the lithium battery negative electrode material more comprehensively, and the drying effect is poor. Moreover, the negative electrode material drying device does not process the water vapor generated during the drying process during use, and the drying efficiency is low, which cannot meet the use requirements. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a negative electrode material drying device which can improve the drying effect of the negative electrode material.

[0005] In order to achieve the above technical objectives, the utility model proposes the following technical solutions: a negative electrode material drying device, comprising a base and a drum, the drum is installed on the base through a rolling mechanism, a plurality of partitions are evenly arranged on the inner wall of the drum, a first fixed drum and a second fixed drum are rotatably embedded at both ends of the drum, a feed hopper is provided at the top of the first fixed drum, a heating mechanism is provided on one side of the first fixed drum, one end of the heating mechanism is connected to a heating drum, and the heating drum is arranged in the drum, a plurality of drying tubes are provided on the top of the heating drum, an arc-shaped air outlet pipe is installed on the drying tube, a plurality of hot air outlets are provided at the bottom of the air outlet pipe, a discharge port is provided at the bottom of the second fixed drum, and one end of the second fixed drum is connected to a water vapor collection mechanism through an air guide pipe.

[0006] Furthermore, the rolling mechanism includes a driving motor, a chain and a sprocket meshed with the chain, the chain is fixedly sleeved on the outer wall of the drum, the sprocket is rotatably installed on the base via a rotating shaft, a pulley is installed on the rotating shaft, the driving motor is arranged below the base, the driving motor drives the pulley to rotate via a belt, rolling rings are fixedly connected on the outer wall of the drum and on both sides of the chain, and a roller in contact with the rolling ring is provided on the base.

[0007] Furthermore, the heating mechanism includes a heating box, a drying fan and a heating wire. The heating box is arranged on one side of the first fixed cylinder, the heating wire is installed in the heating box, and the drying fan is installed on the shell of the heating box to blow the hot air from the heating box into the heating cylinder.

[0008] Furthermore, the steam collecting mechanism includes a condensation tank, in which a condensation tube is spirally distributed. The inlet end of the condensation tube is connected to the air guide duct, and the outlet end of the condensation tube passes through the condensation tank. A water inlet is provided at the upper end of the condensation tank, and a water outlet is provided at the lower end of the cooling tank.

[0009] Furthermore, one end of the air inlet of the air duct is connected to a filter screen arranged on the second fixed cylinder shell, and an exhaust fan is installed on the air duct.

[0010] Compared with the prior art, the beneficial effects produced by the utility model are: the utility model has a novel structure, ingenious conception, simple and convenient operation, and has the following advantages compared with the prior art: the utility model drives the negative electrode material to rotate and disperse it through the rotation of the drum, increases the basic area of ​​the heating cylinder and the dispersed negative electrode material, and improves the drying effect; the air outlet pipe discharges the hot air in the heating cylinder through the air outlet, which not only improves the utilization rate of the hot air, but also the hot air contacts the negative electrode material, further increases the contact area between the negative electrode material and the heat, and improves the drying uniformity; through the mutual cooperation of the filter net, the negative electrode material in the humid hot gas in the drum is filtered out, and the water vapor in the humid hot gas is discharged from the drum, thereby improving the drying efficiency and avoiding the impact of direct discharge on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0013] Figure 3 It is another cross-sectional structural schematic diagram of the utility model.

[0014] In the figure, 1. base; 2. roller; 3. partition; 4. first fixed cylinder; 5. second fixed cylinder; 6. feed hopper; 7. heating cylinder; 8. drying tube; 9. air outlet pipe; 10. discharge port; 11. air guide pipe; 12. driving motor; 13. chain; 14. sprocket; 15. rotating shaft; 16. pulley; 17. belt; 18. roller ring; 19. roller; 20. heating box; 21. drying fan; 22. heating wire; 23. condensing tank; 24. condensing tube; 25. water inlet; 26. water outlet; 27. filter; 28. exhaust fan. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0016] like Figure 1-3 As shown, the utility model provides a negative electrode material drying device, including a base 1 and a drum 2, the drum 2 is installed on the base 1 through a rolling mechanism, a plurality of partitions 3 are evenly arranged on the inner wall of the drum 2, a first fixed drum 4 and a second fixed drum 5 are rotatably embedded at both ends of the drum 2, the first fixed drum 4 and the second fixed drum 5 are fixed on the base 1 through a bracket, a feed hopper 6 is arranged on the top of the first fixed drum 4, a heating mechanism is arranged on one side of the first fixed drum 4, a heating drum 7 is connected to one end of the heating mechanism, and the heating drum 7 is arranged in the drum 2, a plurality of drying tubes 8 are arranged on the top of the heating drum 7, an air outlet pipe 9 with an arc structure is installed on the drying tube 8, a plurality of hot air outlets are arranged at the bottom of the air outlet pipe 9, a discharge port 10 is arranged at the bottom of the second fixed drum 5, and a water vapor collection mechanism is connected to one end of the second fixed drum 10 through an air guide pipe 11.

[0017] like Figure 1-3 As shown, the arc-shaped air outlet pipe 9 and the air outlet at the bottom of the air outlet pipe 9 are always above the heating cylinder 7, which can prevent the negative electrode material from blocking the air outlet; the negative electrode material to be dried is put into the feed hopper 6, and the drum 2 rotates relative to the first fixed cylinder 4 and the second fixed cylinder 5, driving the negative electrode material in the drum 2 to rotate, and the partition 3 is used to disperse the negative electrode material to prevent the negative electrode material from piling up together, causing uneven drying; the heating mechanism inputs heat into the heating cylinder 7, and the negative electrode material will contact the heating cylinder 7 during the rotation process, and the negative electrode material is heated and dried. At the same time, in order to improve the utilization rate of the heat in the heating cylinder 7, the hot air in the heating cylinder 7 is discharged through the air outlet on the air outlet pipe 9, impacting and heating the negative electrode material, and further comprehensively drying the negative electrode material; the water vapor generated in the drum 2 during drying enters the water vapor collection mechanism through the air guide pipe 11 for processing, on the one hand, the humid hot gas is discharged from the drum 2, which can improve the drying efficiency, and on the other hand, the humid hot gas is prevented from being directly discharged into the atmosphere to pollute the atmospheric environment.

[0018] The rolling mechanism includes a driving motor 12, a chain 13 and a sprocket 14 meshing with the chain 13, the chain 13 is fixedly sleeved on the outer wall of the drum 2, the sprocket 14 is rotatably mounted on the base 1 via a rotating shaft 15, a pulley 16 is mounted on the rotating shaft 15, the driving motor 12 is arranged below the base 1, the driving motor 12 drives the pulley 16 to rotate via a belt 17, rolling rings 18 are fixedly connected on the outer wall of the drum 2 and on both sides of the chain 13, and a roller 19 in contact with the rolling ring 18 is provided on the base 1.

[0019] like Figure 1As shown, the driving motor 12 drives the sprocket 14 to rotate through the belt 17 and the pulley 16. The sprocket 14 engages with the chain 13 to drive the roller 2 to rotate. The roller 19 and the roller ring 18 are used to support the roller 2 to enable it to rotate stably.

[0020] The heating mechanism includes a heating box 20, a drying fan 21 and a heating wire 22. The heating box 20 is arranged on one side of the first fixed cylinder 4, the heating wire 22 is installed in the heating box 20, and the drying fan 21 is installed on the shell of the heating box 20 to blow the hot air from the heating box 20 into the heating cylinder 7.

[0021] like Figure 2 As shown, the heating wire 22 heats the air in the heating box 20 , and the drying fan 21 blows the heated gas into the heating cylinder 7 to heat the heating cylinder 7 .

[0022] The steam collecting mechanism includes a condensation tank 23, in which a condensation tube 24 is spirally distributed. The inlet end of the condensation tube 24 is connected to the air duct 11, and the outlet end of the condensation tube 24 passes through the condensation tank 23. A water inlet 25 is provided at the upper end of the condensation tank 23, and a water outlet 26 is provided at the lower end of the cooling tank 23.

[0023] like Figure 2 As shown, the air duct 11 guides the hot and humid gas in the drum 2 into the condenser 24, and cooling water is added to the condenser tank 23 to cool and condense the hot and humid gas in the condenser tube 24. The water produced by the condensation of water vapor in the hot and humid gas and the condensed gas are discharged from the condenser tank 23 through the outlet end of the condenser tube 24. On the one hand, the drying efficiency is improved, and on the other hand, the hot and humid gas can be prevented from being directly discharged into the atmosphere to pollute the atmospheric environment.

[0024] One end of the air inlet of the air duct 11 is connected to a filter screen 27 arranged on the shell of the second fixed cylinder 5 , and an exhaust fan 28 is installed on the air duct 11 .

[0025] like Figure 2 As shown, the exhaust fan 27 guides the hot and humid gas in the drum 2 into the condenser 24. When the negative electrode material rolls in the drum 2 and is blown by the hot air, a small amount of negative electrode material will be carried in the gas in the drum 2. The filter 28 is used to filter out the negative electrode material in the hot and humid gas. The filtered negative electrode material can be recycled to avoid waste of resources.

[0026] Principle of use: first energize the heating wire 22 to heat the air in the heating box 20, and the drying fan 21 blows the hot air into the heating cylinder 7 to preheat the heating cylinder 7. After preheating, start the drive motor 12 and put the negative electrode material to be dried into the feed hopper 6. The negative electrode material rotates in the drum 2, and the partition 3 separates the negative electrode material. At the same time, the hot air in the heating cylinder 7 is discharged through the outlet on the air outlet pipe 9 to impact and heat the negative electrode material, and comprehensively dry the negative electrode material. The hot and humid gas generated in the drum 2 is blown into the condenser 24 by the exhaust fan 28, condensed into water in the condenser 24 and discharged from the condensation tank 23, and the condensed gas is discharged along the condenser 24. The dried negative electrode material is discharged from the drum 2 through the discharge port 10.

[0027] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A negative electrode material drying device, comprising a base (1) and a drum (2), characterized in that: The drum (2) is mounted on the base (1) via a rolling mechanism. A plurality of partitions (3) are evenly arranged on the inner wall of the drum (2). A first fixed drum (4) and a second fixed drum (5) are rotatably embedded at both ends of the drum (2). A feed hopper (6) is arranged at the top of the first fixed drum (4). A heating mechanism is arranged at one side of the first fixed drum (4). One end of the heating mechanism is connected to a heating drum (7), and the heating drum (7) is arranged in the drum (2). A plurality of drying tubes (8) are arranged at the top of the heating drum (7). An air outlet pipe (9) with an arc structure is installed on the drying tube (8). A plurality of hot air outlets are arranged at the bottom of the air outlet pipe (9). A discharge port (10) is arranged at the bottom of the second fixed drum (5). One end of the second fixed drum (5) is connected to a water vapor collection mechanism via an air guide pipe (11).

2. A negative electrode material drying device according to claim 1, characterized in that: The rolling mechanism comprises a driving motor (12), a chain (13) and a sprocket (14) meshed with the chain (13); the chain (13) is fixedly sleeved on the outer wall of the drum (2); the sprocket (14) is rotatably mounted on the base (1) via a rotating shaft (15); a pulley (16) is mounted on the rotating shaft (15); the driving motor (12) is arranged below the base (1); the driving motor (12) drives the pulley (16) to rotate via a belt (17); rolling rings (18) are fixedly connected on the outer wall of the drum (2) and on both sides of the chain (13); and a roller (19) in contact with the rolling ring (18) is provided on the base (1).

3. The negative electrode material drying device according to claim 1, characterized in that: The heating mechanism comprises a heating box (20), a drying fan (21) and a heating wire (22); the heating box (20) is arranged on one side of the first fixed cylinder (4); the heating wire (22) is installed in the heating box (20); and the drying fan (21) is installed on the shell of the heating box (20) to blow hot air from the heating box (20) into the heating cylinder (7).

4. The negative electrode material drying device according to claim 1, characterized in that: The steam collecting mechanism comprises a condensation tank (23), a condensation tube (24) is spirally distributed inside the condensation tank (23), an inlet end of the condensation tube (24) is connected to the air guide tube (11), an outlet end of the condensation tube (24) passes through the condensation tank (23), a water inlet (25) is provided at the upper end of the condensation tank (23), and a water outlet (26) is provided at the lower end of the condensation tank (23).

5. The negative electrode material drying device according to claim 1, characterized in that: One end of the air inlet of the air guide pipe (11) is connected to a filter screen (27) arranged on the shell of the second fixed cylinder (5), and an exhaust fan (28) is installed on the air guide pipe (11).

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