Grinding and dispersing device for preparing graphene dispersion liquid

Abstract

The invention is applicable to the technical field of graphene grinding, and provides a grinding and dispersing device for preparing graphene dispersion liquid, the grinding and dispersing device comprises a barrel, a driving assembly connected with the barrel and an oscillation assembly arranged on the outer wall of the barrel, an inner lining plate is arranged in the barrel, a spiral strip is arranged on the inner lining plate, and the spiral strip is arranged on the outer wall of the barrel. The oscillation assembly comprises a fixing ring arranged around the barrel, a rotary disc installed on the fixing ring, a swing piece installed on the rotary disc, a lifting rod meshed with the swing piece and an arc-shaped oscillation strip arranged at the bottom of the lifting rod. The device solves the problem that adhesion and agglomeration are prone to being generated in the graphene grinding process, collision between graphene and steel balls in the grinding process is increased through a spiral strip in a barrel, meanwhile, the probability that graphene dispersion liquid adheres to the inner wall of the barrel is reduced through cooperation of an oscillation assembly and the spiral strip, and the grinding efficiency is improved. And the uniformity of the graphene dispersion liquid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of graphene grinding, and more specifically, to a grinding and dispersing device for preparing a graphene dispersion liquid. Background Art

[0002] Graphene dispersion is a material that evenly disperses graphene in a solvent and is widely used in electronics, energy storage, composite materials and other fields. In the preparation of graphene dispersion, a ball mill is often used to grind graphite to peel off graphene. The ball mill mainly drives the internal grinding body (such as steel balls) to impact and grind the material through the rotating cylinder, thereby achieving material crushing and refinement.

[0003] Graphene has a high specific surface area, and its lamellar structure is very prone to adhesion and agglomeration during the grinding process. This agglomeration phenomenon will not only lead to poor dispersion of graphene, but also affect its uniformity in the solvent, thereby reducing the performance and application effect of the graphene dispersion. At present, in order to improve the agglomeration problem of graphene dispersion during grinding, although some technologies have tried to improve it by adding dispersants or optimizing the ball milling process, in the actual grinding process, the graphene dispersion is agglomerated and adhered to the inside of the grinding device cylinder, resulting in the uniformity of the finished product cannot be guaranteed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a grinding and dispersing device for preparing a graphene dispersion, which increases the collision between graphene and steel balls during the grinding process through spiral strips inside the cylinder, and at the same time utilizes the cooperation of the oscillation component and the spiral strips to reduce the probability of the graphene dispersion adhering to the inner wall of the cylinder, thereby improving the uniformity of the graphene dispersion.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A grinding and dispersing device for preparing a graphene dispersion comprises a cylinder, a driving assembly connected to the cylinder, and an oscillating assembly arranged on the outer wall of the cylinder, an inner lining plate is arranged inside the cylinder, and a spiral strip is arranged on the inner lining plate, and the oscillating assembly comprises a fixed ring arranged around the cylinder, a turntable installed on the fixed ring, a swinging member installed on the turntable, a lifting rod meshed with the swinging member, and an arc-shaped oscillating strip arranged at the bottom of the lifting rod.

[0007] The present invention is further configured as follows: both sides of the spiral strip cross section are configured as guide portions, and a converging portion is configured between the two guide portions.

[0008] By adopting the above technical scheme, during the rotation of the cylinder, when the spiral strips are located at the high point of the top of the cylinder, the graphene dispersion on the inner lining plate can flow to the collecting part through the guide part under the action of gravity, and finally fall back to the lower part of the cylinder under the action of gravity, thereby reducing the probability of the graphene dispersion adhering to the inner lining plate to a certain extent; the spiral strips protruding from the inner lining plate can also enhance the turbulent effect of the graphene dispersion during the grinding process of the graphene dispersion, increase the frequency of collision between the grinding steel balls and the spiral strips, thereby enhancing the impact between the grinding steel balls and the graphene dispersion, and improving the uniformity of the grinding of the graphene dispersion.

[0009] The present invention is further configured as follows: arc-shaped portions are symmetrically arranged on the inner lining plate at intervals between the spiral strips, and a convex portion is arranged between the two arc-shaped portions.

[0010] By adopting the above technical solution, the protrusions can further collide with the grinding steel balls in the turbulent flow field environment inside the cylinder to break up the agglomerated particles in the graphene dispersion. The continuous spiral structure formed by the arc portion and the protrusions can also enhance the turbulent effect of the graphene dispersion during the grinding process. When the cylinder rises to the highest point, the gravity is used to assist in separating some of the graphene dispersion adhering to the inner lining plate from the inner lining plate, thereby reducing the probability of the graphene dispersion adhering to the inner lining plate to a certain extent.

[0011] The present invention is further configured as follows: a bracket is arranged on the fixing ring, a driving motor is installed on one side of the bracket, and a lifting rod is installed on the other side, and an output end of the driving motor is connected to the turntable.

[0012] The present invention is further configured as follows: the swinging member is rotatably mounted on the bracket, a sliding groove is provided at one end of the swinging member, a gear is provided at the other end, and the sliding groove is sleeved on the turntable.

[0013] The present invention is further configured as follows: a rack meshing with the gear is provided on one side of the lifting rod, and the shape of the arc-shaped oscillation bar is adapted to the outer wall of the cylinder.

[0014] By adopting the above technical solution, the driving motor drives the turntable and the swinging part to rotate, and the swinging part drives the lifting rod to reciprocate up and down through the engagement of the gear and the rack, driving the arc-shaped oscillation bar to periodically knock on the outer wall of the cylinder, and finally utilizing the high-frequency vibration generated by the knocking to enhance the dispersion effect of the graphene dispersion in the cylinder; the high-frequency vibration can also promote the separation of the agglomerated graphene dispersion adhered to the inner lining plate and the spiral strips from the inner lining plate and the spiral strips, further reducing the adhesion of the graphene dispersion.

[0015] The present invention is further configured as follows: the driving assembly includes a motor, a coupling connected to the motor, a reducer connected to the coupling, and a driven shaft, and the driven shaft is connected to an outer lining plate.

[0016] The present invention is further configured as follows: a gear ring is arranged around the inner wall of the outer lining plate, and the gear ring is connected to one end of the cylinder.

[0017] The present invention is further configured as follows: a feeder is connected to one end of the cylinder and a discharger is connected to the other end thereof; the feeder comprises a feed port communicated with the interior of the cylinder and a feed screw arranged inside the feed port.

[0018] The present invention is further configured as follows: the discharger includes a discharge port communicated with the interior of the cylinder and a discharge spiral arranged inside the discharge port.

[0019] The beneficial effects of the present invention are:

[0020] The spiral strips on the inner wall of the cylinder guide the graphene dispersion to spirally advance, so that the graphene dispersion flows in the same direction as the turbulent flow field inside the cylinder. The spiral strips arranged on the protruding inner lining plate can enhance the turbulent effect of the graphene dispersion and increase the frequency of collision between the grinding steel balls and the spiral strips, thereby enhancing the impact between the grinding steel balls and the graphene dispersion and improving the uniformity of grinding the graphene dispersion. The swinging part drives the lifting rod to reciprocate up and down through the engagement of the gear and the rack, driving the arc-shaped oscillation strips to periodically knock on the outer wall of the cylinder, so that high-frequency vibration is generated inside the cylinder. On the one hand, it can break up the agglomerates in the graphene dispersion and enhance the dispersion effect of the graphene dispersion. On the other hand, it can also separate the agglomerated graphene dispersion adhering to the inner lining plate and the spiral strips from the inner lining plate and the spiral strips, thereby reducing the probability of the graphene dispersion adhering to the inner lining plate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the structure of the grinding and dispersing device for preparing graphene dispersion liquid of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the explosion structure of the grinding and dispersing device shown.

[0024] Figure 3 for Figure 1 A top view of the grinding and dispersing device shown.

[0025] Figure 4 for Figure 2 Shown is a cross-sectional view along the BB cutting line.

[0026] Figure 5 for Figure 4 A partial enlarged view of area D is shown.

[0027] Figure 6 for Figure 2 A partial enlarged view of area A.

[0028] Figure 7 for Figure 6 Schematic diagram of the structure of the oscillation component shown.

[0029] Figure 8 for Figure 6 A schematic structural diagram of another state of the oscillation component shown.

[0030] Fig. 9 for Figure 2 Schematic diagram of the structure of the drive assembly and the discharger.

[0031] Fig.10 for Figure 2 Shown is a cross-sectional view along the CC cutting line.

[0032] Description of reference numerals: 1, feeder; 11, feed seat; 12, feed port; 13, feed screw;

[0033] 2. Cylinder; 21. Inner lining plate; 211. Arc-shaped portion; 212. Raised portion; 22. Spiral strip; 221. Guide portion; 222. Collecting portion; 23. End cover;

[0034] 3. Discharger; 31. Discharge seat; 32. Discharge port; 33. Discharge screw;

[0035] 4. Driving assembly; 41. Motor; 42. Coupling; 43. Speed ​​reducer; 44. Driven shaft; 45. Ring gear; 46. Outer lining plate; 47. Pinion;

[0036] 5. Oscillation assembly; 51. Fixed ring; 52. Bracket; 53. Driving motor; 54. Turntable; 55. Swinging piece; 551. Sliding groove; 552. Gear; 56. Lifting rod; 561. Rack; 57. Arc-shaped oscillation bar. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is now described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the present invention in an illustrative manner, so it only shows the composition related to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] Example 1, please refer to Figure 1, a grinding and dispersing device for preparing a graphene dispersion, comprising a cylinder 2, a driving assembly 4 connected to the cylinder 2, and an oscillating assembly 5 arranged on the outer wall of the cylinder 2, wherein one end of the cylinder 2 is connected to a feeder 1, and the other end is connected to a discharger 3. Grinding steel balls are placed inside the cylinder 2, and the graphene dispersion that needs to be ground and dispersed can enter the cylinder 2 through the feeder 1. The driving assembly 4 drives the cylinder 2 to rotate, so that the grinding steel balls inside it collide with the graphene dispersion, and the graphene dispersion is impacted and ground. In this process, the oscillating assembly 5 on the outer wall of the cylinder 2 oscillates the cylinder 2, so that the graphene dispersion adhering to the inner wall of the cylinder 2 is separated from the inner wall of the cylinder 2, reducing the probability of graphene agglomeration, thereby improving the uniformity of the graphene dispersion.

[0039] Please refer to Figure 1-4 The feeder 1 is arranged on the side of the barrel 2 away from the driving assembly 4, and the feeder 1 includes a feed port 12 connected to the inside of the barrel 2 and a feed screw 13 arranged inside the feed port 12. A feed seat 11 is arranged on the outer wall of the feed port 12, and the feed seat 11 is arranged horizontally. The feed port 12 can rotate relative to the feed seat 11. The feed screw 13 is arranged along the feed port 12. When the graphene dispersion enters the barrel 2 through the feed port 12, the feed screw 13 can guide the graphene dispersion entering the barrel 2, so that the graphene dispersion enters the barrel 2 in a manner that adapts to the turbulent flow field environment generated during the rotation of the barrel 2.

[0040] Please refer to Figure 1-3 and Fig. 9 The discharger 3 is arranged on the side of the cylinder 2 close to the driving assembly 4, and the discharger 3 includes a discharge port 32 connected to the inside of the cylinder 2 and a discharge screw 33 arranged inside the discharge port 32. A discharge seat 31 is arranged on the outer wall of the discharge port 32, and the discharge seat 31 is arranged horizontally, and the discharge port 32 can rotate relative to the discharge seat 31. The discharge screw 33 is arranged along the discharge port 32. When the graphene dispersion liquid after dispersion and grinding passes through the cylinder 2 and enters the discharge port 32 for discharge, the discharge screw 33 can guide the graphene dispersion liquid discharged from the cylinder 2, ensuring that the graphene dispersion liquid is always discharged in the direction consistent with the vortex generated during the rotation of the cylinder 2 during the discharge process, thereby reducing the probability of the graphene dispersion liquid re-agglomerating due to the inertia of leaving the turbulent flow field environment during the discharge process.

[0041] Please refer to Figure 1-3 and Fig. 9The driving assembly 4 includes a motor 41, a coupling 42 connected to the motor 41, a reducer 43 connected to the coupling 42, and a driven shaft 44, and an outer lining plate 46 is connected to the driven shaft 44. The motor 41 is connected to the reducer 43 through the coupling 42. The driven shaft 44 is connected to the outer lining plate 46, and a pinion 47 is arranged on the driven shaft 44. A ring gear 45 is arranged around the inner wall of the outer lining plate 46, and the ring gear 45 and the pinion 47 are meshed with each other, and the ring gear 45 is connected to one end of the cylinder 2. The motor 41 can drive the coupling 42 to operate, and under the action of the reducer 43, the ring gear 45 is driven to rotate through the pinion 47, and finally drives the cylinder 2 to rotate.

[0042] Please refer to Figure 1-5 , the cylinder 2 is set as a hollow cylindrical structure, and grinding steel balls for grinding can be placed inside the cylinder 2. The graphene dispersion is ground by the impact generated by the collision between the grinding steel balls and the graphene dispersion. End caps 23 are provided at both ends of the cylinder 2, and the feed port 12 and the discharge port 32 respectively penetrate the end caps 23 at both ends of the cylinder 2 and communicate with the inside of the cylinder 2. An inner lining plate 21 is provided inside the cylinder 2, and the inner lining plate 21 is set to wear-resistant high manganese steel material. In some other embodiments, the inner wall of the cylinder 2 can also be set to wear-resistant materials such as wear-resistant rubber, alloy cast iron, etc., which are not specifically limited in this application. A spiral strip 22 is provided on the inner lining plate 21, and the spiral strip 22 is spirally arranged along the inner lining plate 21. The spiral strip 22 can guide the graphene dispersion inside the cylinder 2 to flow in a spiral direction and promote the mixing of the dispersion medium and the graphene. The cross section of the spiral strip 22 is set to a triangular structure symmetrical along the axis of the spiral strip 22, and the two sides of the cross section of the spiral strip 22 are set to guide parts 221, and the collection part 222 is set between the two guide parts 221. The spiral strip 22 protruding from the inner lining plate 21 can also enhance the turbulent effect of the graphene dispersion during the grinding process of the graphene dispersion, increase the frequency of collision between the grinding steel ball and the spiral strip 22, thereby enhancing the impact between the grinding steel ball and the graphene dispersion, and improving the uniformity of the grinding of the graphene dispersion. Further, the collection part 222 can be set to an arc structure. During the rotation of the cylinder 2, when the spiral strip 22 is located at the top high point of the cylinder 2, the graphene dispersion on the inner lining plate 21 can flow to the collection part 222 through the guide part 221 under the action of gravity, and finally fall back to the lower part of the cylinder 2 under the action of gravity, reducing the probability of the graphene dispersion adhering to the inner lining plate 21 to a certain extent. It should be noted that, in some other embodiments, the inclination angle of the guide portion 221 of the spiral strip 22 can be set to other different angles to meet the dispersion requirements of materials with different viscosities.

[0043] Please refer to Figure 1-5, arc-shaped portions 211 are symmetrically arranged at the intervals between the spiral strips 22 on the inner lining plate 21, and a protrusion 212 is arranged between the two arc-shaped portions 211. The shape of the arc-shaped portion 211 is adapted to the shape of the spiral strips 22, and is also arranged spirally along the cylinder 2. The curvature of the arc-shaped portion 211 is smaller than the protrusion height of the spiral strips 22, and the protrusion 212 is respectively connected to the two symmetrical arc-shaped portions 211, forming a continuous arc-shaped protrusion on the surface of the inner lining plate 21. The protrusion 212 can further collide with the grinding steel ball in the turbulent flow field environment inside the cylinder 2 to break the agglomerated particles in the graphene dispersion. The continuous spiral structure formed by the arc portion 211 and the raised portion 212 can also enhance the turbulence effect of the graphene dispersion during the grinding process. In the process of the cylinder 2 rising to the highest point, gravity is used to assist in separating some graphene dispersion adhering to the inner lining plate 21 from the inner lining plate 21, thereby reducing the probability of the graphene dispersion adhering to the inner lining plate 21 to a certain extent.

[0044] Please refer to Figure 2 and Figure 6-8 The oscillation assembly 5 includes a fixed ring 51 arranged around the cylinder 2, a turntable 54 installed on the fixed ring 51, a swinging member 55 installed on the turntable 54, a lifting rod 56 meshed with the swinging member 55, and an arc-shaped oscillation bar 57 arranged at the bottom of the lifting rod 56. The fixed ring 51 is connected to the cylinder 2, and a bracket 52 is arranged on the fixed ring 51. A driving motor 53 is installed on one side of the bracket 52, and a lifting rod 56 is installed on the other side. The driving motor 53 is arranged in the horizontal direction, and the lifting rod 56 is movably installed on the side wall of the bracket 52 and arranged in the vertical direction. The output end of the driving motor 53 is connected to the turntable 54, and the turntable 54 is arranged on one side of the lifting rod 56. The middle part of the swinging member 55 is rotatably installed on the bracket 52, and a sliding groove 551 is opened at one end of the swinging member 55, and a gear 552 is arranged at the other end. A protrusion whose shape is adapted to the sliding groove 551 is arranged on the turntable 54, and the sliding groove 551 is sleeved on the protrusion on the turntable 54. A rack 561 meshing with the gear 552 is provided on one side of the lifting rod 56, and the shape of the arc-shaped oscillation bar 57 is adapted to the outer wall of the cylinder 2. The driving motor 53 drives the turntable 54 to rotate, and during the rotation of the turntable 54, the swing member 55 is synchronously driven to rotate. The swing member 55 drives the lifting rod 56 to reciprocate up and down through the meshing of the gear 552 and the rack 561, driving the arc-shaped oscillation bar 57 to periodically knock the outer wall of the cylinder 2, so that high-frequency vibration is generated inside the cylinder 2, further breaking up the agglomerates in the graphene dispersion liquid, and finally using the high-frequency vibration generated by the knocking to strengthen the dispersion effect of the graphene dispersion liquid in the cylinder 2; high-frequency vibration can also promote the separation of the agglomerated graphene dispersion liquid adhering to the inner lining plate 21 and the spiral strip 22 from the inner lining plate 21 and the spiral strip 22, further reducing the adhesion of the graphene dispersion liquid. It should be noted that in some other embodiments, convex points can also be added to the bottom surface of the arc-shaped oscillation bar 57 to enhance the vibration intensity of knocking the outer wall of the cylinder 2.

[0045] After the graphene dispersion liquid to be ground enters the cylinder 2 through the feed port 12, the cylinder 2 rotates under the drive assembly 4, and a turbulent flow field environment is generated inside the cylinder 2. The spiral strips 22 on the inner wall of the cylinder 2 guide the graphene dispersion liquid to advance in a spiral, so that the graphene dispersion liquid flows in the same direction as the turbulent flow field, reducing the probability of agglomeration due to the inconsistency between the graphene flow direction and the turbulent flow field direction. In this process, the spiral strips 22 provided by the protruding inner lining plate 21 and the continuous spiral structure formed by the arc-shaped portion 211 and the protruding portion 212 on the inner lining plate 21 can enhance the turbulent effect of the graphene dispersion liquid, increase the frequency of collision between the grinding steel ball and the spiral strips 22, thereby enhancing the impact between the grinding steel ball and the graphene dispersion liquid, and improving the uniformity of the grinding of the graphene dispersion liquid.

[0046] During the grinding process, the driving motor 53 is used to drive the turntable 54 and the swinging member 55 to rotate. The swinging member 55 drives the lifting rod 56 to reciprocate up and down through the engagement of the gear 552 and the rack 561, driving the arc-shaped oscillation bar 57 to periodically knock on the outer wall of the cylinder 2, so that high-frequency vibration is generated inside the cylinder 2. On the one hand, high-frequency vibration can be used to break up the agglomerates in the graphene dispersion, and ultimately enhance the dispersion effect of the graphene dispersion in the cylinder 2; on the other hand, high-frequency vibration can also be used to promote the separation of the agglomerated graphene dispersion adhering to the inner lining plate 21 and the spiral strips 22 from the inner lining plate 21 and the spiral strips 22. In the process of the cylinder 2 rising to the highest point, a portion of the graphene dispersion on the inner lining plate 21 can flow to the collecting portion 222 through the guide portion 221 under the action of gravity, and finally fall back to the lower part of the cylinder 2 under the action of gravity; a portion of the graphene dispersion flows to the raised portion 212 through the arc portion 211 and falls back to the lower part of the cylinder 2 under the action of gravity, thereby reducing the probability of the graphene dispersion adhering to the inner lining plate 21 to a certain extent.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A grinding and dispersing device for preparing a graphene dispersion, characterized in that: The invention comprises a cylinder (2), a driving assembly (4) connected to the cylinder, and an oscillating assembly (5) arranged on the outer wall of the cylinder (2); an inner lining plate (21) is arranged inside the cylinder (2), and a spiral strip (22) is arranged on the inner lining plate (21); the oscillating assembly (5) comprises a fixed ring (51) arranged around the cylinder (2), a rotating disk (54) installed on the fixed ring (51), a swinging member (55) installed on the rotating disk (54), a lifting rod (56) meshed with the swinging member (55), and an arc-shaped oscillating strip (57) arranged at the bottom of the lifting rod (56).

2. A grinding and dispersing device for preparing a graphene dispersion according to claim 1, characterized in that: Both sides of the cross section of the spiral strip (22) are provided as flow guide portions (221), and a converging portion (222) is provided between the two flow guide portions (221).

3. A grinding and dispersing device for preparing a graphene dispersion according to claim 2, characterized in that: The inner lining plate (21) is symmetrically provided with arc-shaped portions (211) at intervals between the spiral strips (22), and a convex portion (212) is provided between the two arc-shaped portions (211).

4. A grinding and dispersing device for preparing a graphene dispersion according to claim 1, characterized in that: A bracket (52) is provided on the fixing ring (51), a driving motor (53) is installed on one side of the bracket (52), and a lifting rod (56) is installed on the other side, and an output end of the driving motor (53) is connected to a rotating disk (54).

5. A grinding and dispersing device for preparing a graphene dispersion according to claim 4, characterized in that: The swing member (55) is rotatably mounted on the bracket (52); a sliding groove (551) is provided at one end of the swing member (55) and a gear (552) is provided at the other end; the sliding groove (551) is sleeved on the rotating disk (54).

6. A grinding and dispersing device for preparing a graphene dispersion according to claim 5, characterized in that: A rack (561) meshing with the gear (552) is provided on one side of the lifting rod (56), and the shape of the arc-shaped oscillating bar (57) is adapted to the outer wall of the cylinder (2).

7. A grinding and dispersing device for preparing a graphene dispersion according to claim 1, characterized in that: The driving assembly (4) comprises a motor (41), a coupling (42) connected to the motor (41), a reducer (43) connected to the coupling (42), and a driven shaft (44), wherein the driven shaft (44) is connected to an outer lining plate (46).

8. A grinding and dispersing device for preparing a graphene dispersion according to claim 7, characterized in that: A gear ring (45) is arranged around the inner wall of the outer lining plate (46), and the gear ring (45) is connected to one end of the cylinder (2).

9. A grinding and dispersing device for preparing a graphene dispersion according to claim 1, characterized in that: One end of the barrel (2) is connected to a feeder (1) and the other end is connected to a discharger (3). The feeder (1) comprises a feed port (12) connected to the interior of the barrel (2) and a feed screw (13) arranged inside the feed port (12).

10. A grinding and dispersing device for preparing a graphene dispersion according to claim 9, characterized in that: The discharger (3) comprises a discharge port (32) connected to the interior of the cylinder (2) and a discharge screw (33) arranged inside the discharge port (32).

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