A device for preparing graphene by air flow pulverization

Abstract

The invention discloses a device for preparing graphene by air flow pulverization, and relates to the technical field of graphene pulverization. The invention vertically fixes an inner tube in the middle position inside an air flow pulverization bin, sleeves an outer tube on the outside of the air flow pulverization bin, and connects the inner tube and the outer tube with a feeding tube through a shunt tube, so that part of the graphene raw material is injected into the air flow pulverization bin from outside to inside through an outer nozzle fixed on the outer tube, and part of the graphene raw material is injected into the air flow pulverization bin from inside to outside through an inner nozzle fixed on the inner tube, which can greatly reduce the distance between the correspondingly arranged outer nozzle and inner nozzle, and to a certain extent reduce the loss of kinetic energy of the graphene raw material when it moves a long distance after being injected, which is beneficial to improve the intensity of the initial collision of the graphene raw material after it is injected into the air flow pulverization bin, and further beneficial to improve the efficiency and effect of the graphene raw material being pulverized by the air flow in the air flow pulverization bin.

Description

Technical Field

[0001] The invention relates to the field of graphene pulverization, and in particular to a device for preparing graphene by airflow pulverization. Background Art

[0002] Graphene is a material with very high hardness. When processing graphene raw materials, in order to obtain finer graphene powder, air flow milling is usually used to crush the graphene raw materials.

[0003] In the process of air flow crushing for graphene raw materials in the prior art, high-speed and high-pressure airflow will carry granular graphene raw materials into the air flow crushing bin, and the graphene raw materials will be crushed by mutual collision during the high-speed movement of the graphene raw materials in the air flow crushing bin. In order to allow the graphene raw materials to have sufficient moving and collision space in the air flow crushing bin, the inner diameter of the air flow crushing bin is usually set to be large enough. This results in a long initial collision distance of the ejected graphene raw materials in the relative direction when the high-speed and high-pressure airflow carries the graphene raw materials and shoots them inward from the end wall of the air flow crushing bin. The long-distance movement can easily lead to the attenuation of the kinetic energy of the graphene raw materials when they are ejected, affecting the effect of the initial collision of the graphene raw materials in the relative direction, and further affecting the efficiency of the graphene raw materials being crushed by the air flow to a certain extent.

[0004] To this end, a device for preparing graphene by air flow pulverization is proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when the graphene raw material is subjected to air flow crushing, the inner diameter of the air flow crushing bin is large, resulting in an excessively large initial collision distance after the graphene raw material is ejected, causing kinetic energy attenuation, affecting the effect of the initial collision on the crushing of the graphene raw material, thereby reducing the efficiency of the graphene air flow crushing, and a device for preparing graphene by air flow crushing is proposed.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A device for preparing graphene by air flow pulverization comprises an air flow pulverizing bin, a vertically arranged inner tube is fixedly installed in the middle position inside the air flow pulverizing bin, an outer tube is sleeved and installed on the outer side of the air flow pulverizing bin, and a plurality of outer nozzles connected to the inner end wall of the air flow pulverizing bin are fixedly installed on the outer tube, an inner nozzle corresponding to the plurality of outer nozzles is fixedly installed on the outer end wall of the inner tube, a centrifugal fan is arranged on the right side of the air flow pulverizing bin, and a feed pipe is fixedly connected to the air outlet of the centrifugal fan, a diverter pipe is fixedly connected to the end of the feed pipe, and the other two ends of the diverter pipe are fixedly connected to the bottom of the inner tube and the outer tube respectively, a barrel is arranged on the front side of the air flow pulverizing bin, and the bottom of the barrel is connected to the feed pipe.

[0008] Preferably, the outer tube is spirally wound from bottom to top on the outside of the airflow crushing bin, the outer nozzles are evenly distributed on the outer tube, a plurality of outer nozzles are orderly connected in a spiral path on the end wall of the airflow crushing bin, and a plurality of inner nozzles are orderly installed in a spiral path on the end wall of the inner tube.

[0009] Preferably, the bottom of the airflow crushing bin is fixedly connected to a receiving bucket, and the bottom of the receiving bucket is fixedly connected to a circulation bin, the feed pipe is fixedly connected to the bottom of the circulation bin, and an isolation mechanism is installed at the connection between the airflow crushing bin and the receiving bucket.

[0010] Preferably, the isolation mechanism includes a first partition fixedly installed at the connection between the airflow crushing bin and the inner tube, a second partition fixedly installed in the receiving bucket and arranged below the first partition, the bottom of the inner tube is fixedly connected to the center position of the first partition and the second partition, an annular cylinder movably mounted on the outside of the inner tube is rotatably installed between the first partition and the second partition, and the annular cylinder is arranged as an up and down through-shaped structure, a plurality of vertical plates distributed in a surrounding manner are fixedly installed in the annular cylinder, a first through hole is opened on the first partition, and a second through hole symmetrically arranged with the center axis of the first through hole is opened on the second partition, an outer side of the annular cylinder is fixedly sleeved with an outer gear ring, and the outer side of the outer gear ring is meshingly connected with a first gear, a servo motor is fixedly installed on the outer side of the airflow crushing bin, and the drive shaft of the servo motor is transmission-connected to the first gear.

[0011] Preferably, the top of the first partition is configured as an inclined structure, the first through hole is opened at the lowest position of the top of the first partition, and an eccentric wheel is fixedly mounted on the driving shaft of the servo motor.

[0012] Preferably, a toothed disc arranged above the inner tube is rotatably installed inside the air flow crushing bin, and a plurality of circular discs distributed around the outer side of the inner tube are installed inside the toothed disc, a vertically arranged crushing rod is fixedly installed below the circular disc, and a second gear is meshedly connected to the outer side of the toothed disc.

[0013] Preferably, the second gear is coaxially arranged above the first gear, a vertically arranged transmission shaft is fixedly connected between the first gear and the second gear, and the transmission shaft is transmission-connected to the driving shaft of the servo motor.

[0014] Preferably, the disc is rotatably mounted in the toothed disc, an inner toothed ring arranged above the toothed disc is fixedly mounted on the inner end wall of the airflow crushing bin, and a third gear meshing with the inner toothed ring is fixedly mounted at the top axial position of the disc.

[0015] Preferably, two breaking rods symmetrically arranged about the central axis are fixedly mounted on the bottom of each disc.

[0016] Preferably, a storage bin is provided on the outside of the air flow crushing bin, the top of the storage bin is fixedly connected to a discharge pipe vertically inserted in the top of the air flow crushing bin, and the end of the discharge pipe is fixedly installed with a first filter element arranged in the air flow crushing bin, and an air pipe connected to the air inlet of the centrifugal fan is fixedly installed above the end wall of the storage bin, and the end of the air pipe is fixedly installed with a second filter element arranged in the storage bin.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the inner tube is vertically fixed in the middle position of the air flow pulverizing bin, the outer tube is sleeved on the outside of the air flow pulverizing bin, and the inner tube and the outer tube are connected with the feeding tube through the shunt tube, so that a part of the graphene raw material is injected into the air flow pulverizing bin from the outside to the inside through the outer nozzle fixed on the outer tube, and the other part of the graphene raw material can be injected into the air flow pulverizing bin from the inside to the outside through the inner nozzle fixed on the inner tube, which can greatly reduce the distance between the corresponding outer nozzle and the inner nozzle, which is conducive to reducing the path length of the initial collision of the graphene raw material in the air flow pulverizing bin after it is ejected, and to a certain extent reduces the loss of kinetic energy when the graphene raw material moves a long distance after it is ejected, which is conducive to improving the intensity of the initial collision of the graphene raw material after it is injected into the air flow pulverizing bin, and then it is conducive to improving the efficiency and effect of the graphene raw material being pulverized by the air flow in the air flow pulverizing bin;

[0019] 2. In the present invention, by setting the outer tube as a spiral structure from bottom to top, the path of the airflow flowing in the outer tube is continuous and stable, and a plurality of outer nozzles are evenly distributed and connected to the outer tube, which can effectively reduce the energy loss of the airflow when flowing in the outer tube, and ensure that the airflow is ejected from the outer nozzle with the graphene raw material wrapped in a high-speed and high-pressure state, which is conducive to ensuring the stability of the device by the airflow entraining the graphene raw material to move at a high speed and collide and crush each other in the airflow crushing bin;

[0020] 3. In the present invention, by arranging the circulation bin connected with the feeding pipe below the airflow crushing bin, and connecting the airflow crushing bin and the circulation bin with the help of the receiving bucket, and cooperating with the activation of the isolation mechanism at the connection between the airflow crushing bin and the receiving bucket, the relative flow of airflow will not be directly generated between the airflow crushing bin and the receiving bucket, and the graphene raw materials accumulated at the bottom of the airflow crushing bin will enter the receiving bucket under the guidance of the isolation mechanism, and finally fall into the circulation bin, and re-enter the inner tube and the outer tube after being entrained by the airflow, and then be sprayed into the airflow crushing bin through the outer nozzle and the inner nozzle for circulation crushing, forming an efficient circulation airflow crushing mode, which is beneficial to improving the quality of the graphene powder finally crushed and formed;

[0021] 4. In the present invention, the toothed disc is rotatably mounted at the upper position inside the airflow crushing bin, and the rotatable disc is distributed around the toothed disc, and the inner gear ring and the third gear are meshed, so that during the rotation of the toothed disc, the disc will not only drive the disc to rotate around the center of the airflow crushing bin, but also rotate around its center, thereby greatly increasing the complexity of the moving trajectory of the crushing rod fixed at the bottom of the disc, and to a certain extent improving the disturbance effect of the graphene raw materials sprayed from the outer nozzle and the inner nozzle during the movement of the multiple crushing rods, thereby facilitating the effect of the graphene raw materials being crushed by the airflow in the airflow crushing bin;

[0022] 5. In the present invention, the storage bin is connected to the air inlet of the centrifugal fan through an air pipe, and the top storage bin of the airflow crushing bin is connected through a discharge pipe. The first filter element and the second filter element are used to filter and block the graphene powder, so that the graphene powder that meets the requirements can enter the storage bin through the discharge pipe and be collected, avoiding the circulating crushing of the graphene powder that meets the requirements in the airflow crushing bin, which is conducive to ensuring the efficient and stable circulation of the graphene raw materials that do not meet the requirements in the airflow crushing bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is a three-dimensional diagram of the airflow crushing bin of the present invention;

[0026] Figure 3 It is a three-dimensional diagram of the circulation bin, feeding pipe and barrel of the present invention;

[0027] Figure 4 It is a three-dimensional diagram of the internal structure of the airflow crushing bin of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the ring cylinder, the vertical plate, the outer gear ring and the first gear of the present invention;

[0029] Figure 6 The figure is a disassembled diagram of the toothed disc, the circular disc and the inner gear ring of the present invention;

[0030] Figure 7 It is a cutaway view of the airflow crushing bin of the present invention;

[0031] Figure 8 A top view of the present invention;

[0032] Fig. 9 For the present invention Figure 8Sectional view at AA in the middle;

[0033] Fig.10 For the present invention Figure 8 Cross-section at the middle BB;

[0034] Fig.11 For the present invention Figure 8 Sectional view at CC;

[0035] Fig.12 It is a front view of the present invention;

[0036] Fig.13 For the present invention Fig.12 Sectional view at DD in the middle;

[0037] Fig.14 For the present invention Fig.12 Sectional view at EE in the middle;

[0038] Fig.15 For the present invention Fig.12 Cross-section at FF;

[0039] Fig.16 For the present invention Fig.12 Cross-section view at GG in the middle.

[0040] Serial number in the picture:

[0041] 1. Airflow crushing chamber; 101. Inner tube; 102. Outer tube; 103. Outer nozzle; 104. Inner nozzle; 105. Receiving bucket; 106. Circulation chamber;

[0042] 2. Centrifugal fan; 201. Feeding pipe; 202. Diverter pipe; 203. Cylinder;

[0043] 3. First baffle; 301. Second baffle; 302. Ring tube; 303. Vertical plate; 304. First through hole; 305. Second through hole; 306. External gear ring; 307. First gear; 308. Servo motor;

[0044] 4. Toothed disc; 401. Disc; 402. Breaker rod; 403. Second gear; 404. Internal gear ring; 405. Third gear;

[0045] 5. Storage bin; 501. Discharge pipe; 502. First filter element; 503. Air pipe; 504. Second filter element. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0047] Embodiment: This embodiment provides a device for preparing graphene by air flow pulverization, see Figure 1 - Fig.16 Specifically, it includes an air flow pulverizing bin 1, a vertically arranged inner tube 101 is fixedly installed in the middle position of the air flow pulverizing bin 1, an outer tube 102 is sleeved on the outer side of the air flow pulverizing bin 1, and a plurality of outer nozzles 103 connected to the inner end wall of the air flow pulverizing bin 1 are fixedly installed on the outer tube 102, and an inner nozzle 104 corresponding to the plurality of outer nozzles 103 is fixedly installed on the outer end wall of the inner tube 101, a centrifugal fan 2 is arranged on the right side of the air flow pulverizing bin 1, and a feed pipe 201 is fixedly connected to the air outlet of the centrifugal fan 2, and the end of the feed pipe 201 is fixedly A shunt pipe 202 is fixedly connected, and the other two ends of the shunt pipe 202 are fixedly connected to the bottom of the inner tube 101 and the outer tube 102 respectively. A barrel 203 is arranged on the front of the airflow pulverizing bin 1, and the bottom of the barrel 203 is connected to the feeding pipe 201. The outer tube 102 is spirally wound from bottom to top on the outside of the airflow pulverizing bin 1, and the outer nozzles 103 are evenly distributed on the outer tube 102. Many outer nozzles 103 are orderly connected to the end wall of the airflow pulverizing bin 1 in a spiral path, and many inner nozzles 104 are orderly installed on the end wall of the inner tube 101 in a spiral path.

[0048] During the use of the device, the staff connects the device to an external power supply so that the external power supply provides power support for the device. Then, the staff can control the device to be powered on and started. A barrel cover that can be flexibly opened and closed is provided on the top of the barrel 203. When the graphene raw material is subjected to air flow crushing, the staff puts the granular graphene raw material into the barrel 203 and closes the barrel cover on the top of the barrel 203, so that the barrel 203 is in a sealed state. Then, the centrifugal fan 2 is powered on and started, and a high-speed and high-pressure airflow enters through the air inlet of the centrifugal fan 2 and is discharged through the air outlet of the centrifugal fan 2. The airflow flows in the feeding pipe 201. Since the bottom of the barrel 203 is connected to the feeding pipe 201, the granular graphene raw material in the barrel 203 will slide into the feeding pipe 201 under the action of gravity. During the high-speed flow of the airflow in the feeding pipe 201, the graphene raw material entering the feeding pipe 201 will be entrained to move at a high speed. The branching tube 202 at the end of the tube 201 divides the flow, and a part of the graphene raw material follows the airflow into the outer tube 102, and moves orderly from bottom to top in the outer tube 102 arranged in a spiral structure, and under the action of the high-speed airflow, it is shot into the airflow crushing bin 1 from outside to inside at high speed through a plurality of outer nozzles 103 evenly distributed on the outer tube 102, and another part of the graphene raw material follows the airflow into the inner tube 101, and is shot into the airflow crushing bin 1 from inside to outside at high speed through a plurality of inner nozzles 104 evenly distributed on the inner tube 101. Since the numerous outer nozzles 103 correspond to the numerous inner nozzles 104 one by one, the airflow ejected from the outer nozzle 103 will collide with the airflow ejected from the corresponding inner nozzle 104, and then the graphene raw material ejected from the outer nozzle 103 and the graphene raw material ejected from the inner nozzle 104 will collide with each other, and violent collision occurs under the entrainment of the high-speed and high-pressure airflow, so that the granular graphene raw material is further crushed into fine shapes.

[0049] Since a part of the graphene raw material is ejected at high speed from the outside to the inside relative to the air flow crushing bin 1 through the outer nozzle 103, and the other part of the graphene raw material is ejected at high speed from the inside to the outside relative to the air flow crushing bin 1 through the inner nozzle 104, two internal and external ejection paths are provided for the graphene raw material. Compared with the air flow crushing method in the prior art that only injects the graphene raw material into the air flow crushing bin 1 from the outside to the inside, the technical scheme in the present application can greatly reduce the path length of the graphene raw material collision in the air flow crushing bin 1 after being ejected, which is beneficial to reducing the impact energy loss of the graphene raw material when it moves a long distance after being ejected, and further beneficial to improving the intensity of the collision of the graphene raw material in the air flow crushing bin 1 due to the airflow, and is beneficial to improving the efficiency and effect of the graphene raw material being crushed by the airflow in the air flow crushing bin 1.

[0050] In the present application, by setting the outer tube 102 as a spiral structure from bottom to top, the path of the airflow flowing in the outer tube 102 is continuous and stable, and a large number of outer nozzles 103 are evenly distributed and connected to the outer tube 102, which can effectively reduce the energy loss of the airflow when flowing in the outer tube 102, and ensure that the airflow is ejected from the outer nozzle 103 with the graphene raw material in a high-speed and high-pressure state, which is beneficial to ensure the stability of the device by the airflow entraining the graphene raw material to move at a high speed and collide and crush each other in the airflow crushing bin 1.

[0051] In the specific implementation process, Figure 4 , Figure 5 , Figure 7 and Fig.11 As shown, the bottom of the air flow crushing bin 1 is fixedly connected to the receiving bucket 105, and the bottom of the receiving bucket 105 is fixedly connected to the circulation bin 106, the feeding pipe 201 is fixedly connected to the bottom of the circulation bin 106, and an isolation mechanism is installed at the connection between the air flow crushing bin 1 and the receiving bucket 105, the isolation mechanism includes a first partition plate 3 fixedly installed at the connection between the air flow crushing bin 1 and the inner tube 101, a second partition plate 301 arranged below the first partition plate 3 is fixedly installed in the receiving bucket 105, the bottom of the inner tube 101 is fixedly connected to the center position of the first partition plate 3 and the second partition plate 301, and an annular cylinder 302 movably sleeved on the outside of the inner tube 101 is rotatably installed between the first partition plate 3 and the second partition plate 301, and the annular cylinder 302 is arranged It is arranged as an up and down through-shaped structure, a plurality of vertical plates 303 distributed in a surrounding manner are fixedly installed in the annular cylinder 302, a first through hole 304 is opened on the first partition plate 3, and a second through hole 305 symmetrically arranged with the central axis of the first through hole 304 is opened on the second partition plate 301, an outer toothed ring 306 is fixedly sleeved on the outer side of the annular cylinder 302, and the outer side of the outer toothed ring 306 is meshingly connected with a first gear 307, a servo motor 308 is fixedly installed on the outer side of the air flow crushing bin 1, and the driving shaft of the servo motor 308 is transmission-connected with the first gear 307, the top of the first partition plate 3 is arranged as an inclined structure, the first through hole 304 is opened at the lowest position on the top of the first partition plate 3, and an eccentric wheel is fixedly installed on the driving shaft of the servo motor 308.

[0052] During the use of the device, the graphene raw materials ejected from the outer nozzle 103 and the inner nozzle 104 collide and crush each other, and finally fall to the bottom of the airflow crushing bin 1 under the action of gravity. At this time, the isolation mechanism installed between the airflow crushing bin 1 and the receiving bucket 105 is activated. With the help of the isolation mechanism, the airflow crushing bin 1 and the receiving bucket 105 will not directly generate a relative flow of airflow, and the graphene raw materials accumulated at the bottom of the airflow crushing bin 1 will enter the receiving bucket 105 under the guidance of the isolation mechanism, and finally fall into the circulation bin 106. Tube 201 is connected, so that the high-speed and high-pressure airflow flowing in the feeding tube 201 will entrain the graphene raw materials falling in the circulation bin 106 and re-enter the inner tube 101 and the outer tube 102 when passing through the bottom of the circulation bin 106, and then be sprayed into the air flow crushing bin 1 through the outer nozzle 103 and the inner nozzle 104, forming a circulating flow of the graphene raw materials. The graphene raw materials circulate between the feeding tube 201, the inner tube 101 / outer tube 102, the air flow crushing bin 1 and the circulation bin 106, thereby forming an efficient circulating air flow crushing mode, so that the quality of the graphene powder finally crushed and formed is finer.

[0053] When the isolation mechanism is started, the servo motor 308 installed on the outside of the air flow crushing bin 1 is powered on and started, driving the first gear 307 connected to its drive shaft to rotate, and by means of the meshing transmission between the first gear 307 and the outer gear ring 306, the outer gear ring 306 drives the ring cylinder 302 to rotate stably between the first partition plate 3 and the second partition plate 301. Since a plurality of vertical plates 303 distributed around are fixedly installed in the ring cylinder 302, under the isolation of the plurality of vertical plates 303, the ring cylinder 302 is set as a plurality of small compartments that are connected up and down. During the rotation of the ring cylinder 302, the plurality of small compartments distributed around will be driven to rotate and move synchronously. When the small compartment is aligned with the first through hole 304, the graphene raw materials accumulated above the first partition plate 3 at the bottom of the air flow crushing bin 1 enter the small compartment through the first through hole 304, and move synchronously with the movement of the small compartment. When the small compartment is aligned with the second through hole 305, the graphene filled in the small compartment The raw materials fall into the receiving bucket 105 under the action of gravity and are finally collected in the circulation bin 106. With the continuous rotation of the annular cylinder 302, the graphene raw materials at the bottom of the airflow crushing bin 1 are transferred to the receiving bucket 105. Since the first through hole 304 and the second through hole 305 are symmetrically arranged on the first partition 3 and the second partition 301 about the central axis, and there are many vertical plates 303 between the first through hole 304 and the second through hole 305 for blocking, the first through hole 304 and the second through hole 305 cannot be directly connected. Under slow rotation, the airflow in the airflow crushing bin 1 cannot flow directly into the receiving bucket 105, so that the receiving bucket 105 and the circulation bin 106 connected to the bottom thereof are in a state of relatively stable internal airflow, which is conducive to ensuring that the graphene raw materials collected in the circulation bin 106 can be stably entrained and returned to the inner tube 101 and the outer tube 102 by the high-speed and high-pressure airflow flowing in the feeding pipe 201.

[0054] During use of the device, since the top of the first partition 3 is set as an inclined structure, the graphene raw material accumulated on the top of the first partition 3 can stably slide down along the inclined surface into the first through hole 304, thereby preventing the graphene raw material from accumulating and clogging the top of the first partition 3. At the same time, by fixing the eccentric wheel on the driving shaft of the servo motor 308, the servo motor 308 can drive the eccentric wheel to rotate after being powered on, forming a working mode of the vibration motor, applying a shaking vibration effect to the airflow crushing bin 1 and the receiving bucket 105, which is beneficial to enhance the smoothness of the graphene raw material sliding downward along the top inclined surface of the first partition 3 and the receiving bucket 105, and to a certain extent improves the stability of the device for circulating airflow crushing of graphene raw materials.

[0055] In the specific implementation process, Figure 4 - Figure 6 and Fig. 9 - Fig.11As shown, a toothed disc 4 arranged above the inner tube 101 is rotatably installed inside the airflow pulverizing bin 1, and a plurality of discs 401 arranged around the outer side of the inner tube 101 are installed inside the toothed disc 4, and a vertically arranged crushing rod 402 is fixedly installed below the disc 401, and a second gear 403 is meshingly connected to the outer side of the toothed disc 4, and the second gear 403 is coaxially arranged above the first gear 307, and a vertically arranged transmission shaft is fixedly connected between the first gear 307 and the second gear 403, and the transmission shaft is transmission-connected to the driving shaft of the servo motor 308, and the disc 401 is rotatably installed in the toothed disc 4, and an inner gear ring 404 arranged above the toothed disc 4 is fixedly installed on the inner end wall of the airflow pulverizing bin 1, and a third gear 405 meshing with the inner gear ring 404 is fixedly installed at the top axial position of the disc 401, and two crushing rods 402 symmetrically arranged along the central axis are fixedly installed at the bottom of each disc 401.

[0056] During the use of the device, when the graphene raw material is sprayed into the airflow crushing bin 1 through the outer nozzle 103 and the inner nozzle 104 under the entrainment of the airflow, the servo motor 308 installed on the outer side of the airflow crushing bin 1 will drive the second gear 403 connected to its driving shaft to rotate after being powered on. With the meshing of the second gear 403 and the toothed disc 4, the toothed disc 4 is driven to rotate. During the rotation of the toothed disc 4, many circular discs 401 distributed around it will be driven to rotate around the center of the airflow crushing bin 1, thereby driving many crushing rods 402 to rotate in an orderly manner in the space outside the inner tube 101 inside the airflow crushing bin 1. During the rotation and movement of the crushing rod 402, the crushing rod 402 is often blocked in The outer nozzle 103 and the inner nozzle 104 corresponding to each other are often moved away from between the outer nozzle 103 and the inner nozzle 104. When the crushing rod 402 is between the outer nozzle 103 and the inner nozzle 104, the graphene raw materials sprayed from the outer nozzle 103 and the inner nozzle 104 will collide with the crushing rod 402. With the help of the collision impact, the graphene raw materials are crushed. When the crushing rod 402 moves away from between the outer nozzle 103 and the inner nozzle 104, the graphene raw materials sprayed from the outer nozzle 103 and the inner nozzle 104 collide with each other to crush the graphene raw materials. The two collision impact modes are performed alternately, which is beneficial to improving the effect of airflow crushing of the graphene raw materials in the airflow crushing bin 1.

[0057] In the process of driving the toothed disc 4 to rotate, the disc 401 is rotatably connected to the toothed disc 4, and a third gear 405 meshing with the inner gear ring 404 is fixedly installed on the top of the disc 401. Therefore, in the process of driving the disc 401 to rotate around the center position of the airflow pulverizing bin 1, the toothed disc 4 can also drive the disc 401 to self-rotate around its center position by virtue of the meshing between the inner gear ring 404 and the third gear 405, so that the two crushing rods 402 symmetrically fixed at the bottom of the disc 401 can not only rotate around the inner tube 101 in the outer space of the inner tube 101 in the airflow pulverizing bin 1, but also rotate around the center of the disc 401. Under the cooperation with each other, the complexity of the moving trajectory of the crushing rods 402 can be greatly increased, and the disturbance effect on the graphene raw materials sprayed from the outer nozzle 103 and the inner nozzle 104 during the movement of the multiple crushing rods 402 is improved to a certain extent, which is conducive to improving the effect of the graphene raw materials being pulverized by the airflow in the airflow pulverizing bin 1.

[0058] In the specific implementation process, Figure 8 and Fig.15 As shown, a storage bin 5 is arranged on the outside of the air flow crushing bin 1, and the top of the storage bin 5 is fixedly connected to a discharge pipe 501 vertically inserted in the top of the air flow crushing bin 1, and a first filter element 502 arranged in the air flow crushing bin 1 is fixedly installed at the end of the discharge pipe 501, and an air pipe 503 connected to the air inlet of the centrifugal fan 2 is fixedly installed above the end wall of the storage bin 5, and a second filter element 504 arranged in the storage bin 5 is fixedly installed at the end of the air pipe 503.

[0059] During the use of the device, since the storage bin 5 is connected to the air inlet of the centrifugal fan 2 through the air pipe 503, the discharge pipe 501 is connected between the storage bin 5 and the top of the air flow crushing bin 1, so that during the startup of the centrifugal fan 2, the airflow in the air flow crushing bin 1 will enter the storage bin 5 through the discharge pipe 501, and finally enter the air inlet of the centrifugal fan 2 through the air pipe 503. The first filter element 502 can filter the graphene powder, and the second filter element 504 can block the graphene powder. During the flow of air, the graphene powder that meets the requirements after air flow crushing in the air flow crushing bin 1 passes through the first filter element 502 and enters the discharge pipe 501 under the entrainment of the air flow, and the graphene raw materials that do not meet the requirements are filtered out. It falls back to the bottom of the airflow crushing bin 1 and waits for the cyclic airflow crushing treatment. The graphene powder that meets the requirements enters the storage bin 5 through the discharge pipe 501 under the entrainment of the airflow. The airflow can pass through the second filter element 504 normally, while the graphene powder cannot pass through the second filter element 504, which makes the graphene powder entrained in the airflow stay and be collected in the storage bin 5. The above-mentioned structural arrangement allows the graphene powder that meets the requirements after airflow crushing to be automatically discharged from the airflow crushing bin 1 during the startup of the device for separate collection, thereby avoiding the circulating crushing of the graphene powder that meets the requirements in the airflow crushing bin 1, which is beneficial to ensuring the efficient and stable circulating airflow crushing of the graphene raw materials that do not meet the requirements in the airflow crushing bin 1.

[0060] Specifically, the working principle and operation method of the present invention are as follows:

[0061] The staff puts the graphene raw material to be crushed into the barrel 203, closes the barrel cover on the top of the barrel 203, and starts the centrifugal fan 2. The high-speed and high-pressure airflow flows in the feeding pipe 201, and is divided into the inner tube 101 and the outer tube 102 through the diversion pipe 202. During the flow of the airflow, the graphene raw material falling from the bottom of the barrel 203 is entrained, and finally the graphene raw material is sprayed into the airflow crushing bin 1 through the outer nozzle 103 and the inner nozzle 104. The graphene raw material collides in the airflow crushing bin 1 through the airflow injection, and the airflow crushing is performed synchronously. After the servo motor 308 is powered on and started, the second gear 403 is driven to rotate. With the meshing of the second gear 403 and the toothed disc 4, the toothed disc 4 drives the plurality of circular discs 401 distributed around to rotate around the inner tube 101. During the rotation, with the meshing of the inner gear ring 404 and the third gear 405, the circular discs 401 are driven to rotate themselves, and finally the crushing rods 402 symmetrically arranged at the bottom of each circular disc 401 are driven to move in a complex trajectory in the outer space of the inner tube 101 in the air flow crushing chamber 1, thereby disturbing the injection collision of the graphene raw material and increasing the graphene raw material in the air flow crushing chamber 1. The airflow crushing effect in the airflow crushing bin 1 is that the servo motor 308 drives the first gear 307 to rotate synchronously, and the ring cylinder 302 is driven to rotate between the first partition plate 3 and the second partition plate 301 by means of the meshing of the first gear 307 and the outer gear ring 306, driving the multiple small spaces separated by the vertical plates 303 in the ring cylinder 302 to continuously rotate. The graphene raw materials crushed by the impact and collision of the airflow in the airflow crushing bin 1 fall and gather on the top of the first partition plate 3 below the airflow crushing bin 1, and slide along the inclined surface of the first partition plate 3 through the first through hole 304 to the corresponding In the connected small space, it is then discharged downward into the receiving bucket 105 through the second through hole 305 during the rotation of the small space, and finally gathered in the circulation bin 106. During the high-speed flow of the airflow in the feeding pipe 201, the graphene raw materials in the circulation bin 106 are entrained to re-enter the inner tube 101 and the outer tube 102, and are sprayed into the airflow crushing bin 1 through the outer nozzle 103 and the inner nozzle 104 again, forming a circulating airflow crushing of the graphene raw materials. After crushing, the graphene powder that meets the requirements passes through the first filter element 502 and the discharge pipe 501 into the storage bin 5.

[0062] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for preparing graphene by air flow pulverization, comprising an air flow pulverization chamber (1), characterized in that: An inner tube (101) arranged vertically is fixedly installed in the middle position of the airflow pulverizing bin (1); an outer tube (102) is sleeved and installed on the outer side of the airflow pulverizing bin (1); a plurality of outer nozzles (103) connected to the inner end wall of the airflow pulverizing bin (1) are fixedly installed on the outer tube (102); inner nozzles (104) corresponding to the plurality of outer nozzles (103) are fixedly installed on the outer end wall of the inner tube (101); a centrifugal fan (2) is arranged on the right side of the airflow pulverizing bin (1); a feed pipe (201) is fixedly connected to the air outlet of the centrifugal fan (2); a diverter pipe (202) is fixedly connected to the end of the feed pipe (201); and the other two ends of the diverter pipe (202) are fixedly connected to the bottom of the inner tube (101) and the bottom of the outer tube (102) respectively; a barrel (203) is arranged on the front side of the airflow pulverizing bin (1); and the bottom of the barrel (203) is connected to the feed pipe (201); The outer tube (102) is spirally wound from bottom to top on the outer side of the airflow pulverizing chamber (1); the outer nozzles (103) are evenly distributed on the outer tube (102); a plurality of the outer nozzles (103) are orderly connected to the end wall of the airflow pulverizing chamber (1) in a spiral path; and a plurality of the inner nozzles (104) are orderly installed on the end wall of the inner tube (101) in a spiral path; The bottom of the airflow crushing bin (1) is fixedly connected to a receiving bucket (105), and the bottom of the receiving bucket (105) is fixedly connected to a circulation bin (106); the feeding pipe (201) is fixedly connected to the bottom of the circulation bin (106); and an isolation mechanism is installed at the connection between the airflow crushing bin (1) and the receiving bucket (105); The isolation mechanism comprises a first partition (3) fixedly mounted at the connection between the airflow crushing bin (1) and the inner tube (101); a second partition (301) arranged below the first partition (3) is fixedly mounted in the receiving bucket (105); the bottom of the inner tube (101) is fixedly connected to the center of the first partition (3) and the second partition (301); an annular cylinder (302) movably sleeved on the outside of the inner tube (101) is rotatably mounted between the first partition (3) and the second partition (301); the annular cylinder (302) is arranged as a vertical through-type structure; the annular cylinder (302) A plurality of vertical plates (303) are fixedly installed in a surrounding manner, a first through hole (304) is opened on the first partition plate (3), a second through hole (305) is opened on the second partition plate (301) and is symmetrically arranged with the central axis of the first through hole (304), an outer toothed ring (306) is fixedly sleeved on the outer side of the annular cylinder (302), and a first gear (307) is meshingly connected on the outer side of the outer toothed ring (306), and a servo motor (308) is fixedly installed on the outer side of the airflow crushing bin (1), and a drive shaft of the servo motor (308) is drivingly connected to the first gear (307); The top of the first partition (3) is arranged as an inclined structure, the first through hole (304) is opened at the lowest position of the top of the first partition (3), and an eccentric wheel is fixedly mounted on the driving shaft of the servo motor (308).

2. The device for preparing graphene by air flow pulverization according to claim 1, characterized in that: A toothed disc (4) arranged above the inner tube (101) is rotatably mounted inside the air flow pulverizing bin (1), and a plurality of circular discs (401) arranged around the outer side of the inner tube (101) are mounted inside the toothed disc (4), a vertically arranged crushing rod (402) is fixedly mounted below the circular disc (401), and a second gear (403) is meshingly connected to the outer side of the toothed disc (4).

3. The device for preparing graphene by air flow pulverization according to claim 2, characterized in that: The second gear (403) is coaxially arranged above the first gear (307), a vertically arranged transmission shaft is fixedly connected between the first gear (307) and the second gear (403), and the transmission shaft is transmission-connected to a drive shaft of a servo motor (308).

4. The device for preparing graphene by air flow pulverization according to claim 2, characterized in that: The disc (401) is rotatably mounted in the toothed disc (4); an inner toothed ring (404) arranged above the toothed disc (4) is fixedly mounted on the inner end wall of the airflow pulverizing chamber (1); and a third gear (405) meshing with the inner toothed ring (404) is fixedly mounted at the top axial center of the disc (401).

5. The device for preparing graphene by air flow pulverization according to claim 4, characterized in that: Two crushing rods (402) symmetrically arranged about the central axis are fixedly mounted on the bottom of each disc (401).

6. The device for preparing graphene by air flow pulverization according to claim 1, characterized in that: A material storage bin (5) is arranged outside the air flow pulverizing bin (1), the top of the material storage bin (5) is fixedly connected to a discharge pipe (501) vertically inserted in the top of the air flow pulverizing bin (1), and a first filter element (502) arranged in the air flow pulverizing bin (1) is fixedly installed at the end of the discharge pipe (501), and an air pipe (503) connected to the air inlet of the centrifugal fan (2) is fixedly installed above the end wall of the material storage bin (5), and a second filter element (504) arranged in the material storage bin (5) is fixedly installed at the end of the air pipe (503).

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