Ultrasonic dispersion device for graphene metal composite powder

Abstract

The utility model discloses an ultrasonic dispersion device for graphene metal composite powder, which comprises a shell, a first barrel and a second barrel are fixedly arranged on the inner side of the shell, a first rotating shaft and a second rotating shaft are rotatably arranged at the tops of the first barrel and the second barrel respectively, and stirring blades are fixedly arranged on the first rotating shaft and the second rotating shaft respectively. A motor is arranged at the top of the first barrel, the output end of the motor is connected with a first rotating shaft, a transmission assembly for driving a second rotating shaft to rotate is arranged on the first rotating shaft, discharging pipes are connected to the bottoms of the first barrel and the second barrel, a third barrel is fixedly arranged at the bottom ends of the two discharging pipes, and a discharging pipe is arranged at the bottom of the third barrel; an ultrasonic generator is arranged on the outer wall of the shell. Metal powder dispersion liquid and graphite dispersion liquid are prepared in advance through the first barrel and the second barrel, dispersion and mixing are conducted in a mechanical dispersion and ultrasonic dispersion combined mode, and the dispersion liquid in the first barrel and the dispersion liquid in the second barrel are mixed to finally form the graphene metal composite powder.

Description

Technical Field

[0001] This utility model belongs to the field of dispersion device technology, and in particular relates to an ultrasonic dispersion device for graphene metal composite powder. Background Technology

[0002] Graphene possesses excellent optical, electrical, and mechanical properties, as well as a unique two-dimensional layered crystal structure and anisotropy. Its properties can be controlled through various modification methods. However, due to the strong interaction forces inherent in graphene, it is prone to agglomeration. Therefore, dispersion equipment and dispersants are required to disperse it in a dispersion medium. Currently, the main technologies are mechanical dispersion and ultrasonic dispersion.

[0003] The existing patent with authorization announcement number CN217288221U provides an ultrasonic dispersion device. However, existing ultrasonic dispersion devices that only use mechanical stirring are difficult to achieve uniform dispersion. Some devices that use ultrasonic dispersion have high costs and low efficiency, which is not conducive to large-scale production. Utility Model Content

[0004] To address the problems that existing ultrasonic dispersion devices, which rely solely on mechanical stirring, struggle to achieve uniform dispersion, and that ultrasonic dispersion in some devices is costly and inefficient, thus hindering large-scale production, this invention provides an ultrasonic dispersion device for graphene-metal composite powder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultrasonic dispersion device for graphene metal composite powder, comprising a shell, a first cylinder and a second cylinder fixedly disposed inside the shell, a first rotating shaft and a second rotating shaft respectively rotatably disposed inside the first cylinder and the second cylinder with their axes distributed in the vertical direction, stirring blades fixedly disposed on the first rotating shaft and the second rotating shaft, a motor fixedly disposed at the top of the first cylinder, the output end of the motor being connected to the first rotating shaft, a transmission component for driving the second rotating shaft to rotate disposed on the first rotating shaft, a feeding pipe fixedly disposed at the bottom of the first cylinder and the second cylinder, a third cylinder disposed below the two feeding pipes and both of the first and second cylinders being connected to the interior of the third cylinder, a discharge pipe disposed at the bottom of the third cylinder, and an ultrasonic generator fixedly disposed on the outer wall of the shell.

[0006] Preferably, a fixing plate is fixedly provided on the outer wall of both the first cylinder and the second cylinder, and the fixing plate is fixed to the inner wall of the shell.

[0007] Preferably, the transmission assembly includes a driving wheel, a driven wheel, and a belt. The driving wheel is fixedly mounted on a first rotating shaft, and the driven wheel is fixedly mounted on a second rotating shaft. The driving wheel and the driven wheel are connected by a belt.

[0008] Preferably, both the top of the first cylinder and the top of the second cylinder are provided with a feeding port and a chemical dosing port.

[0009] Preferably, both feed pipes are equipped with electromagnetic switching valves.

[0010] Preferably, the bottom end of the discharge pipe penetrates the bottom wall of the housing, and a valve is provided on the inner side of the discharge pipe.

[0011] Preferably, both the first and second rotating shafts are fixedly provided with helical blades.

[0012] Preferably, a transducer is connected between the ultrasonic generator and the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This device pre-prepares metal powder dispersion and graphite dispersion in the first and second cylinders, and disperses and mixes them by combining mechanical dispersion and ultrasonic dispersion. This ensures the preparation effect of the dispersion of a single component while effectively improving the preparation efficiency of the dispersion and reducing the production cost. After mixing the dispersions in the first and second cylinders, the mixture is further treated by water bath and ultrasonic treatment to finally form graphene metal composite powder.

[0015] 2. The motor drives the first and second rotating shafts to rotate synchronously via a belt, thereby driving the stirring blades and spiral blades on the first and second rotating shafts to rotate, thus synchronously stirring and mixing the particles and liquid inside the cylinder. The mechanical stirring method of combining spiral blades and stirring blades can effectively improve the mixing effect of the dispersion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

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

[0018] Figure 3 This is a schematic diagram of the structure of the first and second cylinders of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first rotating shaft of this utility model.

[0020] In the diagram: 1. Shell; 2. First cylinder; 3. Second cylinder; 4. First rotating shaft; 5. Second rotating shaft; 6. Stirring blade; 7. Motor; 8. Feed pipe; 9. Third cylinder; 10. Discharge pipe; 11. Ultrasonic generator; 12. Fixed plate; 13. Drive wheel; 14. Driven wheel; 15. Belt; 16. Feed port; 17. Dosing port; 18. Electromagnetic switch valve; 19. Valve; 20. Spiral blade. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 An ultrasonic dispersion device for graphene-metal composite powder includes a housing 1, inside which a first cylinder 2 and a second cylinder 3 are fixedly disposed. A fixing plate 12 is fixedly disposed on the outer wall of both the first cylinder 2 and the second cylinder 3, and the fixing plate 12 is fixed to the inner wall of the housing 1. A first rotating shaft 4 and a second rotating shaft 5 are rotatably disposed on the top of the first cylinder 2 and the second cylinder 3, respectively. Stirring blades 6 are disposed on both the first rotating shaft 4 and the second rotating shaft 5. Figure 2 and Figure 4 As shown, two sets of stirring rods are symmetrically fixedly connected to the radial sides of the first rotating shaft 4 and the second rotating shaft 5. The length of the stirring rods is distributed along the vertical direction and close to the inner wall of their respective cylinders. The stirring blades 6 are fixedly connected to the inner side of the stirring rods and are arranged in multiple sets at intervals along the length of the stirring rods. A motor 7 is fixedly installed on the top of the first cylinder 2. The output end of the motor 7 is connected to the first rotating shaft 4 for transmission. A transmission component for driving the second rotating shaft 5 to rotate is installed on the first rotating shaft 4.

[0023] The transmission assembly includes a drive wheel 13, a driven wheel 14, and a belt 15. The drive wheel 13 is fixedly mounted on the first rotating shaft 4, and the driven wheel 14 is fixedly mounted on the second rotating shaft 5. The drive wheel 13 and the driven wheel 14 are connected by the belt 15. The motor 7 drives the first rotating shaft 4 to rotate, which in turn drives the drive wheel 13 to rotate. The drive wheel 13 then drives the driven wheel 14 and the second rotating shaft 5 to rotate via the belt 15, thereby causing the first rotating shaft 4 and the second rotating shaft 5 to rotate the stirring blade 6.

[0024] To improve the stirring effect, spiral blades 20 are fixedly installed on both the first rotating shaft 4 and the second rotating shaft 5. The spiral blades 20 are located in the middle part of their respective cylinders. Figure 4 As shown, the spiral blades 20 are distributed along the height direction, and the stirring blades 6 are distributed radially along the axis of rotation with one end of the inner side inclined upward at a certain angle. This angle is the same as the spiral helix angle of the spiral blades. By driving the spiral blades 20 to rotate, the material can be effectively pushed to move in the vertical direction during rotation. Combined with the lateral stirring and mixing of the stirring blades 6, the uniformity and efficiency of the dispersion mixing can be further improved.

[0025] In addition, the top of both the first cylinder 2 and the second cylinder 3 is provided with a feeding port 16 and a chemical dosing port 17.

[0026] Furthermore, a feeding pipe 8 is fixedly installed at the bottom of both the first cylinder 2 and the second cylinder 3. An electromagnetic switch valve 18 is installed inside each of the two feeding pipes 8. The same third cylinder 9 is fixedly installed at the bottom of the two feeding pipes 8. A discharge pipe 10 is fixedly installed at the bottom of the third cylinder 9. The bottom end of the discharge pipe 10 penetrates the bottom wall of the shell 1. A valve 19 is installed inside the discharge pipe 10. An ultrasonic generator 11 is fixedly installed on the outer wall of the shell 1. In this embodiment, the ultrasonic generator 11 is electrically connected to a transducer (not shown in the figure). The transducer is fixedly connected to the outer wall of the shell 1. The ultrasonic generator 11 applies an electrical signal to the transducer, thereby converting the electrical signal into mechanical vibration through the transducer to achieve ultrasonic vibration of the shell 1.

[0027] The principle of preparing graphene-metal composite powder using this device is as follows:

[0028] First, prepare the aluminum powder dispersion: Add spherical aluminum powder with a particle size distribution of 80-300 mesh and 75% alcohol by volume to the first cylinder 2, dispersing the aluminum powder in the 75% alcohol by volume. Then, use an ultrasonic generator 11 to perform ultrasonic treatment to obtain the aluminum powder dispersion. Next, prepare the graphite dispersion: Add thin-layer graphite powder with a two-dimensional size of 10-100 micrometers and 75% alcohol by volume to the second cylinder 3, dispersing the graphite powder in the 75% alcohol by volume. Then, use an ultrasonic generator 11 to perform ultrasonic treatment to form a uniform dispersion. A uniform solution is obtained to obtain a graphene dispersion. Simultaneously, during the operation of the ultrasonic generator 11, the motor 7 is started synchronously. The motor 7 drives the first rotating shaft 4 to rotate, the first rotating shaft 4 drives the driving wheel 13 to rotate, and the driving wheel 13 drives the driven wheel 14 and the second rotating shaft 5 to rotate via the belt 15. This causes the first rotating shaft 4 and the second rotating shaft 5 to drive the stirring blade 6 to rotate, thereby improving the stirring and mixing speed and mixing effect of the aluminum powder dispersion and the graphite dispersion. At the same time, by driving the stirring blade 6 and the spiral blade 20 to rotate together, the mixing effect of the dispersion is further improved.

[0029] Cooling water is stored at the bottom inside the shell 1, and the water level is adapted to the third cylinder 9. A cooling water circulation system is provided on the back of the shell 1 (such as a jacketed heat exchanger fixed on the outer wall of the shell 1 or other heat exchange structure, which is the prior art and will not be described in detail in this embodiment). The internal temperature of the shell 1 and the water bath temperature can be controlled by the external cooling water circulation system, thereby controlling the temperature of the graphene dispersion in the third cylinder 9. By opening the two electromagnetic switch valves 18, the aluminum powder dispersion and the graphite dispersion are introduced into the third cylinder 9 through the two feed pipes 8 for mixing. The mixture is ultrasonicated in the water bath for 5-10 minutes at a frequency of 10KHz-100KHz, and then ultrasonicated for 30 minutes at a power of 200W to obtain a graphite / aluminum powder mixed dispersion. Finally, the mixed dispersion is discharged through the discharge pipe 10.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ultrasonic dispersion device for graphene-metal composite powder, comprising a housing (1), characterized in that, The inner side of the shell (1) is fixedly provided with a first cylinder (2) and a second cylinder (3). The top of the first cylinder (2) and the second cylinder (3) are respectively rotatably provided with a first rotating shaft (4) and a second rotating shaft (5) with their axes distributed in the vertical direction. Stirring blades (6) are fixedly provided on the first rotating shaft (4) and the second rotating shaft (5). A motor (7) is fixedly provided on the top of the first cylinder (2). The output end of the motor (7) is connected to the first rotating shaft (4) for transmission. A transmission component for driving the second rotating shaft (5) to rotate is provided on the first rotating shaft (4). A feed pipe (8) is fixedly provided at the bottom of the first cylinder (2) and the second cylinder (3). A third cylinder (9) is provided below the two feed pipes (8) and both are connected to the inside of the third cylinder (9). A discharge pipe (10) is provided at the bottom of the third cylinder (9). An ultrasonic generator (11) is fixedly provided on the outer wall of the shell (1).

2. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, The outer walls of the first cylinder (2) and the second cylinder (3) are both fixedly provided with fixing plates (12), and the fixing plates (12) are fixedly connected to the inner side wall of the shell (1).

3. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, The transmission assembly includes a drive wheel (13), a driven wheel (14) and a belt (15). The drive wheel (13) is fixedly mounted on the first rotating shaft (4), and the driven wheel (14) is fixedly mounted on the second rotating shaft (5). The drive wheel (13) and the driven wheel (14) are connected by the belt (15).

4. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, The top of the first cylinder (2) and the second cylinder (3) are provided with a feeding port (16) and a drug feeding port (17).

5. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, Both of the feeding pipes (8) are equipped with electromagnetic switch valves (18).

6. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, The bottom end of the discharge pipe (10) penetrates the bottom wall of the housing (1), and a valve (19) is provided on the inner side of the discharge pipe (10).

7. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, Helical blades (20) are fixedly installed on both the first rotating shaft (4) and the second rotating shaft (5).

8. The ultrasonic dispersion device for graphene-metal composite powder according to claim 1, characterized in that, A transducer is connected between the ultrasonic generator (11) and the housing (1).

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