Graphene puffing device

Abstract

The invention relates to the technical field of graphene puffing production, in particular to a graphene puffing device which comprises a base, a storage hopper is fixedly connected to the upper end of the base, a stirring mechanism is arranged in the storage hopper, graphene particles in the storage hopper are stirred through the stirring mechanism, an extrusion mechanism is arranged in the storage hopper, and the extrusion mechanism is used for extruding the graphene particles in the storage hopper. Graphene particles are extruded through the extrusion mechanism, a fan is fixedly connected to the outer side of the storage hopper, a puffing mechanism is arranged at the upper end of the base, and a connecting pipe is fixedly connected to the outer side of the storage hopper; the extruded graphene particles are blown into the connecting pipe through the fan, the graphene particles entering the connecting pipe enter the expansion mechanism to be expanded, and the graphene particles are extruded through the extrusion mechanism, so that cracks are extruded on the surfaces of the graphene particles or the graphene particles are extruded into sheets, and the heating surface area of the graphene particles is increased; the puffing speed is increased, and continuous and rapid puffing production of graphene is realized.

Description

Technical Field

[0001] This invention relates to the field of graphene expansion production technology, specifically to a graphene expansion device. Background Technology

[0002] Graphene is a novel two-dimensional carbon nanomaterial with excellent electrical conductivity, thermal conductivity, and corrosion resistance. The oxidation-reduction method is a relatively common method for producing graphene. The oxidation-reduction method involves a reduction process, and common reduction methods include heating and chemical methods. Among these, heating reduction is more suitable for large-scale production.

[0003] For example, Chinese patent CN222024099U discloses a graphene puffing device, which includes a moving base, a box, a blower, a pipe, a feed port, an auxiliary device, a furnace body, an adjusting device, a controller, a heating element, a servo motor, a stirrer, and a discharge port.

[0004] However, the above solution has the following shortcomings: when expanding graphene particles, after the small graphene particles are expanded, the large graphene particles may not be fully expanded. And when the large graphene particles are fully expanded, the small graphene particles may be over-expanded. In addition, the expansion time of the large graphene particles is long, which reduces production efficiency. Therefore, we have introduced a graphene expansion device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a graphene expansion device that solves the problems described in the background technology.

[0006] The objective of this invention is achieved as follows: A graphene puffing device includes a base, a storage hopper fixedly connected to the upper end of the base, a stirring mechanism inside the storage hopper to stir the graphene particles inside the storage hopper, an extrusion mechanism inside the storage hopper to extrude the graphene particles, a fan fixedly connected to the outside of the storage hopper, an puffing mechanism at the upper end of the base, and a connecting pipe fixedly connected to the outside of the storage hopper. The end of the connecting pipe away from the storage hopper is connected to the puffing mechanism. The extruded graphene particles are blown into the connecting pipe by the fan, and the graphene particles entering the connecting pipe enter the puffing mechanism for puffing. A connecting box is fixedly connected to the upper end of the base. One end of the puffing mechanism is connected to the connecting box. A filtering mechanism is provided inside the connecting box. An exhaust pipe is fixedly connected to the side of the connecting box away from the puffing mechanism. A detection mechanism is provided inside the exhaust pipe. An impeller is movably connected inside the exhaust pipe. The lower end of the impeller passes through the exhaust pipe and is connected to the reducer. The reducer is fixedly connected to the outside of the connecting box. The lower end of the reducer is fixedly connected to the pulley, and a turntable is movably connected to the inside of the connecting box. Several material storage cavities are opened at the upper end of the turntable. A pulley is fixedly connected to the upper end of the turntable. Two pulleys are connected to each other by a belt. A discharge pipe is fixedly connected inside the base. The upper end of the discharge pipe is connected to the connecting box.

[0007] Preferably, the stirring mechanism includes a stirring rod, which is movably connected to the inside of the storage hopper. The upper end of the stirring rod passes through the storage hopper and is fixedly connected to the output end of the drive motor, which is fixedly connected to the upper end of the storage hopper.

[0008] Preferably, the extrusion mechanism includes two extrusion rollers, which are movably connected inside the storage hopper. One end of each extrusion roller extends out of the storage hopper and meshes with a gear. The two gears mesh with each other. A connecting motor is fixedly connected to the outside of the storage hopper, and the output end of the connecting motor meshes with a gear.

[0009] Preferably, the outer side of the extrusion roller is in contact with the scraper, the scraper is movably connected to the inner side of the storage hopper, the end of the scraper away from the extrusion roller is fixedly connected to the T-shaped rod, the T-shaped rod is movably connected to the inside of the storage hopper, and one end extends into the external environment, a first spring is sleeved on the outer side of the T-shaped rod, one end of the first spring is fixedly connected to the scraper, and the other end is fixedly connected to the inner side of the storage hopper.

[0010] Preferably, the puffing mechanism includes a connecting column, a spiral guide cavity is provided inside the connecting column, one end of the connecting tube is fixedly connected to the connecting column and connected to the spiral guide cavity, a plurality of heating components are fixedly installed inside the connecting column, one end of the connecting column is fixedly connected to the connecting box, and the spiral guide cavity is connected to the inner side of the connecting box.

[0011] Preferably, the filtration mechanism includes an I-shaped turntable, which is movably connected to the inside of the connecting box. A filter cloth is fixedly connected to the outside of the I-shaped turntable. Two through holes are opened at the lower end of the I-shaped turntable. A first motor is fixedly connected to the upper end of the connecting box, and the output end of the first motor is fixedly connected to the upper end of the I-shaped turntable.

[0012] Preferably, the detection mechanism includes an I-shaped plug rod, one end of which is engaged with the air inlet of the exhaust pipe, and the other end is slidably connected to a sliding cavity. The sliding cavity is located inside the exhaust pipe, and a second spring is fixedly connected inside the sliding cavity. The other end of the second spring is fixedly connected to the I-shaped plug rod, and a push switch is fixedly connected inside the sliding cavity.

[0013] Preferably, a magnetic ring is fixedly connected to the lower end of the base, and a collection hopper is installed at the lower end of the magnetic ring.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the graphene particles are squeezed by the extrusion mechanism, so that the surface of the graphene particles is squeezed out with cracks or squeezed into sheets, thereby accelerating the heating surface area of ​​the graphene particles and increasing the expansion speed. The detection mechanism allows the filter mechanism to rotate after one side is blocked, so that the airflow back-blowing the original filter surface can make the filter mechanism achieve the filtration effect again. At the same time, the strong airflow can also prevent graphene from being blocked in the expansion mechanism, thus realizing the continuous and rapid expansion production of graphene. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the connecting box of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the exhaust pipe structure of the present invention.

[0019] Figure 4 This is a schematic diagram showing the positional relationship between the extrusion roller and the scraper of the present invention.

[0020] Figure 5 This is a schematic diagram of the connection relationship between the gear and the connecting motor of the present invention.

[0021] Figure 6 This is a three-dimensional cross-sectional view of the exhaust pipe structure of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the filter cloth position of the present invention.

[0023] In the diagram: 1. Base; 2. Storage hopper; 3. Stirring rod; 4. Connecting column; 5. Drive motor; 6. Heating assembly; 7. Spiral guide cavity; 8. Connecting box; 9. First motor; 10. I-shaped turntable; 11. Exhaust pipe; 12. Reducer; 13. Belt; 14. Turntable; 15. Magnetic ring; 16. Collection hopper; 17. Connecting pipe; 18. Fan; 19. Extrusion roller; 20. Filter cloth; 21. I-shaped plug rod; 22. Sliding cavity; 23. Press switch; 24. Second spring; 25. Discharge pipe; 26. Impeller; 27. Storage cavity; 28. Pulley; 29. ​​Through hole; 30. Gear; 31. Connecting motor; 32. Scraper; 33. First spring; 34. T-shaped rod. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1 like Figure 1-7 The graphene expansion device shown includes a base 1, a storage hopper 2 fixedly connected to the upper end of the base 1, a stirring mechanism inside the storage hopper 2 to stir the graphene particles inside the storage hopper 2, and an extrusion mechanism inside the storage hopper 2 to extrude the graphene particles, causing cracks to appear on the surface of the graphene particles or extruding them into sheets. A fan 18 is fixedly connected to the outside of the storage hopper 2, and an expansion mechanism is provided at the upper end of the base 1. A connecting pipe 17 is fixedly connected to the outside of the storage hopper 2, with the end of the connecting pipe 17 away from the storage hopper 2 connected to the expansion mechanism. The extruded graphene particles are blown into the connecting pipe 17 by the fan 18. The graphene particles entering the connecting pipe 17 enter the expansion mechanism for expansion. The graphene particles with cracks on their surface or extruded into sheets are rapidly expanded when they enter the expansion mechanism. A connecting box 8 is fixedly connected to the upper end of the base 1. One end of the puffing mechanism is connected to the connecting box 8. A filter mechanism is provided inside the connecting box 8 to separate the puffed graphene and the airflow. An exhaust pipe 11 is fixedly connected to the side of the connecting box 8 away from the puffing mechanism. The exhaust pipe 11 is used to discharge the airflow into the external environment. A detection mechanism is provided inside the exhaust pipe 11. An impeller 26 is movably connected inside the exhaust pipe 11. The lower end of the impeller 26 passes through the exhaust pipe 11 and is connected to the reducer 12. The reducer 12 is fixedly connected to the outside of the connecting box 8. When the airflow is discharged into the external environment through the exhaust pipe 11, it will drive the impeller 26 to rotate. Under the deceleration of the reducer 12, the pulley 28 connected to the reducer 12 will rotate slowly. The lower end of the reducer 12 is fixedly connected to the pulley 28. The turntable 14 is movably connected to the inside of the connecting box 8. Several storage cavities 27 are opened at the upper end of the turntable 14. The expanded graphene blocked by the filter cloth 20 will fall into the storage cavity 27. When the storage cavity 27 storing the expanded graphene moves to the position of the discharge pipe 25, the expanded graphene will enter the collection hopper 16 through the discharge pipe 25 for storage, preventing airflow from being discharged through the discharge pipe 25. The upper end of the turntable 14 is fixedly connected to the pulley 28. The two pulleys 28 are connected to each other through the belt 13. The discharge pipe 25 is fixedly connected inside the base 1. The upper end of the discharge pipe 25 is connected to the connecting box 8.

[0026] Example 2 Based on Example 1, in order to enable the graphene particles to expand rapidly after being heated, the stirring mechanism includes a stirring rod 3. The stirring rod 3 is movably connected to the inside of the storage hopper 2. The upper end of the stirring rod 3 passes through the storage hopper 2 and is fixedly connected to the output end of the drive motor 5. The drive motor 5 is fixedly connected to the upper end of the storage hopper 2. When the drive motor 5 is turned on, the stirring rod 3 is rotated, and the graphene particles are stirred by the stirring rod 3 to prevent the graphene particles from accumulating together. The extrusion mechanism includes two extrusion rollers 19, which are movably connected inside the storage hopper 2. One end of the extrusion roller 19 extends out of the storage hopper 2 and meshes with a gear 30. The two gears 30 mesh with each other. A connecting motor 31 is fixedly connected to the outside of the storage hopper 2. The output end of the connecting motor 31 meshes with a gear 30. The graphene particles are squeezed by the two extrusion rollers 19, causing the graphene particles to break or be squeezed into sheets. The granular raw materials are pressed into thin sheets, which greatly increases their surface area, allowing them to expand instantly and uniformly when heated. The outer side of the extrusion roller 19 is in contact with the scraper 32, which is movably connected to the inner side of the storage hopper 2. The end of the scraper 32 away from the extrusion roller 19 is fixedly connected to the T-shaped rod 34, which is movably connected to the inside of the storage hopper 2 and extends into the external environment. A first spring 33 is sleeved on the outer side of the T-shaped rod 34. One end of the first spring 33 is fixedly connected to the scraper 32, and the other end is fixedly connected to the inner side of the storage hopper 2. Under the elastic force of the first spring 33, the scraper 32 will always be in contact with the extrusion roller 19, and the graphene particles adhering to the surface of the extrusion roller 19 will be scraped off by the scraper 32. The puffing mechanism includes a connecting column 4, a spiral guide cavity 7 is provided inside the connecting column 4, one end of the connecting tube 17 is fixedly connected to the connecting column 4 and connected to the spiral guide cavity 7, several heating components 6 are fixedly installed inside the connecting column 4, one end of the connecting column 4 is fixedly connected to the connecting box 8, and the spiral guide cavity 7 is connected to the inside of the connecting box 8. When the airflow carries the extruded graphene particles into the spiral guide cavity 7, the heat generated by the heating components 6 will rapidly heat the graphene particles, and at the same time, the strong airflow can also clean the surface of the spiral guide cavity 7. The filtration mechanism includes an I-shaped turntable 10, which is movably connected to the inside of the connecting box 8. A filter cloth 20 is fixedly connected to the outside of the I-shaped turntable 10. Two through holes 29 are opened at the lower end of the I-shaped turntable 10. A first motor 9 is fixedly connected to the upper end of the connecting box 8. The output end of the first motor 9 is fixedly connected to the upper end of the I-shaped turntable 10. The detection mechanism includes an I-shaped plug rod 21. One end of the I-shaped plug rod 21 is snapped into the air inlet of the exhaust pipe 11, and the other end is slidably connected to the sliding cavity 22. The sliding cavity 22 is opened inside the exhaust pipe 11. A second spring 24 is fixedly connected inside the sliding cavity 22. The other end of the second spring 24 is fixedly connected to the I-shaped plug rod 21. A push switch 23 is fixedly connected inside the sliding cavity 22. A magnetic ring 15 is fixedly connected to the lower end of the base 1. A collection hopper 16 is installed at the lower end of the magnetic ring 15. The collection hopper 16 can be installed at the lower end of the base 1 by the attraction generated by the magnetic ring 15.

[0027] Working principle: During use, graphene particles are added into the storage hopper 2 through the feeding port. The drive motor 5 is turned on to drive the stirring rod 3 to rotate, which stirs the graphene particles to prevent them from piling up. The connecting motor 31 is turned on to drive the gear 30 connected to its output end to rotate. Since the two gears 30 mesh with each other, they will drive the extrusion roller 19 to rotate. Under the stirring of the stirring rod 3, the graphene particles are squeezed by the two extrusion rollers 19, causing the graphene particles to break or be squeezed into flakes. Under the elastic force of the first spring 33, the scraper 32 will always be in contact with the extrusion roller 19, and the scraper 32 will scrape off the graphene particles adhering to the surface of the extrusion roller 19. Turning on the fan 18 blows the compressed graphene particles into the connecting pipe 17. Several heating components 6 heat the spiral guide cavity 7. The airflow carrying the graphene particles into the spiral guide cavity 7 causes them to expand. The expanded graphene, along with the airflow, enters the connecting box 8. A filter cloth 20 separates the air from the expanded graphene. After passing through the filter cloth 20, the airflow pushes the I-shaped plug rod 21 to move. At this time, one end of the I-shaped plug rod 21 releases the blockage at the air inlet of the exhaust pipe 11, while the other end of the I-shaped plug rod 21 presses the switch 2. 3. Pressing the airflow causes the impeller 26 to rotate as it passes through the exhaust pipe 11 and is discharged into the external environment. Under the deceleration of the reducer 12, the pulley 28 connected to the reducer 12 rotates slowly. Under the connection of the belt 13, another pulley 28 drives the turntable 14 to rotate. The expanded graphene blocked by the filter cloth 20 falls into the storage cavity 27. When the storage cavity 27 containing the expanded graphene moves to the position of the discharge pipe 25, the expanded graphene will enter the collection hopper 16 through the discharge pipe 25 for storage. When the filter cloth 20 is blocked, causing the airflow into the exhaust pipe 11 to decrease and preventing it from pushing the I-shaped plug rod 21 to the right, the I-shaped plug rod 21 will move to the left under the elastic force of the second spring 24, and the pressing of the push switch 23 will be canceled. At this time, the first motor 9 will start and drive the I-shaped turntable 10 to rotate rapidly. The filter surface of the filter cloth 20 will rotate to the right side. At this time, the fan 18 will restart, and the airflow entering the connecting box 8 will blow off the blockage on the original filter surface of the filter cloth 20 as it passes through the filter cloth 20, thus cleaning the filter cloth 20. At the same time, the airflow will push the I-shaped plug rod 21 to the right again and press the push switch 23. At this time, the airflow will carry impurities and be discharged into the external environment through the exhaust pipe 11.

[0028] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A graphene expansion device, comprising a base, characterized in that: A storage hopper is fixedly connected to the upper end of the base. A stirring mechanism is provided inside the storage hopper to stir the graphene particles in the storage hopper. An extrusion mechanism is provided inside the storage hopper to extrude the graphene particles. A fan is fixedly connected to the outside of the storage hopper. An expansion mechanism is provided at the upper end of the base. A connecting pipe is fixedly connected to the outside of the storage hopper. The end of the connecting pipe away from the storage hopper is connected to the expansion mechanism. The extruded graphene particles are blown into the connecting pipe by the fan. The graphene particles entering the connecting pipe enter the expansion mechanism for expansion. A connecting box is fixedly connected to the upper end of the base. One end of the puffing mechanism is connected to the connecting box. A filtering mechanism is provided inside the connecting box. An exhaust pipe is fixedly connected to the side of the connecting box away from the puffing mechanism. A detection mechanism is provided inside the exhaust pipe. An impeller is movably connected inside the exhaust pipe. The lower end of the impeller passes through the exhaust pipe and is connected to the reducer. The reducer is fixedly connected to the outside of the connecting box. The lower end of the reducer is fixedly connected to the pulley, and a turntable is movably connected to the inside of the connecting box. Several material storage cavities are opened at the upper end of the turntable. A pulley is fixedly connected to the upper end of the turntable. Two pulleys are connected to each other by a belt. A discharge pipe is fixedly connected inside the base. The upper end of the discharge pipe is connected to the connecting box.

2. The graphene expansion device according to claim 1, characterized in that: The stirring mechanism includes a stirring rod, which is movably connected to the inside of the storage hopper. The upper end of the stirring rod passes through the storage hopper and is fixedly connected to the output end of the drive motor. The drive motor is fixedly connected to the upper end of the storage hopper.

3. The graphene expansion device according to claim 1, characterized in that: The extrusion mechanism includes two extrusion rollers, which are movably connected inside the storage hopper. One end of the extrusion roller extends out of the storage hopper and meshes with a gear. The two gears mesh with each other. A connecting motor is fixedly connected to the outside of the storage hopper, and the output end of the connecting motor meshes with a gear.

4. The graphene expansion device according to claim 3, characterized in that: The outer side of the extrusion roller is in contact with the scraper, the scraper is movably connected to the inner side of the storage hopper, the end of the scraper away from the extrusion roller is fixedly connected to the T-shaped rod, the T-shaped rod is movably connected to the inside of the storage hopper, and one end extends into the external environment, a first spring is sleeved on the outer side of the T-shaped rod, one end of the first spring is fixedly connected to the scraper, and the other end is fixedly connected to the inner side of the storage hopper.

5. The graphene expansion device according to claim 1, characterized in that: The puffing mechanism includes a connecting column with a spiral guide cavity inside. One end of the connecting tube is fixedly connected to the connecting column and to the spiral guide cavity. Several heating components are fixedly installed inside the connecting column. One end of the connecting column is fixedly connected to the connecting box, and the spiral guide cavity communicates with the inside of the connecting box.

6. The graphene expansion device according to claim 1, characterized in that: The filtration mechanism includes an I-shaped turntable, which is movably connected to the inside of the connecting box. A filter cloth is fixedly connected to the outside of the I-shaped turntable. Two through holes are opened at the lower end of the I-shaped turntable. A first motor is fixedly connected to the upper end of the connecting box, and the output end of the first motor is fixedly connected to the upper end of the I-shaped turntable.

7. The graphene expansion device according to claim 1, characterized in that: The detection mechanism includes an I-shaped plug rod, one end of which is engaged with the air inlet of the exhaust pipe, and the other end is slidably connected to a sliding cavity. The sliding cavity is located inside the exhaust pipe, and a second spring is fixedly connected inside the sliding cavity. The other end of the second spring is fixedly connected to the I-shaped plug rod, and a push switch is fixedly connected inside the sliding cavity.

8. The graphene expansion device according to claim 1, characterized in that: A magnetic ring is fixedly connected to the lower end of the base, and a collection hopper is installed at the lower end of the magnetic ring.

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