Reactor for preparing nano material and feeding and mixing mode thereof

Abstract

The invention discloses a reactor for nano material preparation and a feeding and mixing mode thereof.The reactor comprises a device body and is further provided with a first screen, a second screen and a third screen, the upper end of the first screen is a premixing cavity, a rear mixing cavity is formed between the second screen and the first screen, and a dispersing agent adding cavity is formed between the second screen and the third screen; a micro-mixing cavity is formed in the lower end of the third screen, and before entering the micro-mixing cavity, a raw material solution is primarily and uniformly mixed by using the pre-mixing cavity so as to ensure the primary uniformity of reactants, and then the reactants are further mixed through the post-mixing cavity; then a proper amount of dispersing agent is added through the second feeding port to enhance the dispersity and uniformity of reactants, the uniformity of the reactants is improved through the feeding mixing mode that premixing and post-mixing are combined and introduction of the dispersing agent, the possibility of precipitate agglomeration is reduced, the blocking phenomenon of the micro-mixing cavity is effectively reduced, and the stability of the micro-mixing cavity is improved. The stability of the nano material preparation process is improved, and the production continuity and efficiency are improved.

Description

Technical Field

[0001] The present application relates to a reactor for preparing nanomaterials and its feed mixing method, belonging to the field of nanomaterial reactors. Background Art

[0002] Nanomaterials include nanoparticles, nanowires, nanotubes, and nanofilms. Among them, coprecipitation is the most commonly used method for preparing metal nanomaterials and oxide nanomaterials. The process is relatively simple and has significant advantages such as easy control of preparation conditions, low cost, and short synthesis cycle. The traditional coprecipitation method refers to the process in which when there are two or more cations in a solution and they exist in a homogeneous state in the solution, once a precipitating agent is added, multiple cations will precipitate together.

[0003] In the process of preparing nanomaterials, the degree of uniformity when the metal precursor is mixed with the precipitating agent or reducing agent is extremely crucial for the nucleation and growth of metal nanoparticles. However, traditional batch autoclave reactors often have some problems, such as low production efficiency, too high local concentration, and large particle size and wide particle size distribution of nanoparticles due to poor metal dispersion. The unique shape and ingenious arrangement of microchannel reactors can skillfully guide the fluid to form a specific flow pattern, thus effectively promoting the full mixing at the microscopic level between different materials. With the advantage of being able to precisely control the reaction conditions, this kind of reactor can prepare nanomaterials with more stable performance and higher activity, so it has an important application value that cannot be ignored in the synthesis of nanomaterials in many fields such as chemical engineering and energy.

[0004] In the actual application process, it is found that there are still several technical problems. For example, in the process of preparing nanomaterials, due to the large differences in density and viscosity of various materials, the mixing is not sufficient, and the addition methods and timing of various additives, dispersants, and precipitating agents are not appropriate, etc., resulting in frequent blockage problems inside the reactor. Accompanied by this, the pressure in the system will also change, and these conditions will undoubtedly have a negative impact on the continuity of synthesis. Moreover, throughout the preparation process, these two key factors of blockage and pressure change may also affect the continuity of synthesis, and it cannot be ignored that the internal structure of the reactor is relatively complex and it is often difficult to carry out thorough cleaning work, bringing no small challenges to subsequent maintenance and continuous use. Summary of the Invention

[0005] According to one aspect of the present application, a reactor for preparing nanomaterials is provided, including a device main body, and also provided with a first screen, a second screen, and a third screen. The first screen is fixedly connected to the inner wall of the device main body, and the upper end of the first screen is a premixing chamber;

[0006] The second sieve is located at the lower end of the first sieve. The second sieve is fixedly connected to the inner wall of the device main body. The space between the second sieve and the first sieve is the post-mixing chamber;

[0007] The third sieve is located at the lower end of the second sieve. The third sieve is fixedly connected to the inner wall of the device main body. The space between the second sieve and the third sieve is the dispersant addition chamber. The lower end of the third sieve is the micro-mixing chamber.

[0008] Optionally, one end of the device main body is fixedly connected with a first feed inlet, and the first feed inlet communicates with the pre-mixing chamber. One end of the device main body is fixedly connected with a second feed inlet, and the second feed inlet communicates with the dispersant addition chamber.

[0009] Optionally, a first hole is penetrated and opened at the upper end of the device main body. The device main body is rotationally connected with a first connecting column through the first hole. The upper end of the device main body is fixedly connected with a U-shaped plate, and the upper end of the first connecting column is rotationally connected with the U-shaped plate.

[0010] Optionally, a motor is fixedly connected to the upper end of the U-shaped plate. The output port of the motor is fixedly connected with the first connecting column. A driving sprocket is fixedly connected to the first connecting column. Two parallel fixing plates are fixedly connected to one end of the device main body.

[0011] Optionally, a first connecting rod is arranged between the two fixing plates. The upper and lower ends of the first connecting rod are rotationally connected to the corresponding fixing plates. The upper fixing plate is rotationally connected with a second connecting column. The second connecting column passes through the fixing plate and is fixedly connected with the first connecting rod.

[0012] Optionally, a driven sprocket is fixedly connected to the upper end of the second connecting column. A synchronous chain is arranged between the driving sprocket and the driven sprocket. The two ends of the synchronous chain are meshed and connected with the driven sprocket and the driving sprocket. A rotating bevel gear is fixedly connected to the first connecting rod. One end of the rotating bevel gear is vertically meshed with a meshing bevel gear.

[0013] Optionally, a ring is rotationally connected to the inner wall of the device main body. A connecting plate is fixedly connected to the inside of the ring. The lower end of the first connecting column is fixedly connected with the connecting plate. A second connecting rod is fixedly connected to the lower end of the ring.

[0014] Optionally, a cleaning brush is movably connected to the upper surface of the first sieve. The upper end of the cleaning brush is fixedly connected with a fixing frame. An empty groove is opened at the upper end of the fixing frame. The lower end of the second connecting rod is located in the empty groove. Limiting blocks are fixedly connected to the front and rear ends of the fixing frame. Limiting grooves are opened on the inner wall of the device main body. The two limiting grooves correspond to the two limiting blocks in position. The two limiting blocks are slidably connected to the device main body through the two limiting grooves.

[0015] By providing a cleaning brush, after the staff feeds materials through the first feed inlet, the motor is started. The motor drives the first connecting column to rotate, and the first connecting column drives the connecting plate and the ring to rotate. When the ring rotates, it drives the second connecting rod to move. The lower end of the second connecting rod is located in the empty slot of the fixed frame. At this time, the fixed frame drives the cleaning brush to move. Since the fixed frame drives the limiting block to move, and the limiting block is slidably connected to the device main body through the limiting slot, at this time, the fixed frame and the cleaning brush will reciprocate along the surface of the first sieve mesh. When the cleaning brush moves, it will clean the blockages on the surface of the first sieve mesh, so that the surface of the first sieve mesh is no longer blocked by raw materials. Through the above-mentioned linkage cleaning mechanism of the cleaning brush and various components, the first sieve mesh can be effectively kept unblocked. This not only avoids the reduction of mixing efficiency caused by raw material blockage, but also reduces the frequency of equipment shutdown for cleaning, extends the service life of the equipment, and ensures the continuous, stable and efficient progress of the nano material preparation process.

[0016] Optionally, a second hole is penetrated and opened at the side end of the device main body. The device main body is rotatably connected with a third connecting column through the second hole. One end of the third connecting column is fixedly connected with a meshing bevel gear. A stirring mechanism is fixedly connected to the side end of the third connecting column. One end of the stirring mechanism is rotatably connected to the inner wall of the device main body.

[0017] By providing a stirring mechanism, when the first connecting column rotates, the first connecting column drives the driving sprocket to rotate. Since the driven sprocket on the second connecting column is engaged with the driving sprocket through the synchronous chain, the second connecting column will also rotate as the first connecting column rotates. The second connecting column drives the first connecting rod and the rotating bevel gear to rotate. The rotating bevel gear drives the meshing bevel gear and the third connecting column to rotate. When the third connecting column rotates, it drives the stirring mechanism to rotate. This linkage rotation design of the stirring mechanism can fully stir and mix the materials inside the device, strengthen the interaction of materials between chambers, improve the mixing uniformity and reaction efficiency, reduce material retention and local concentration difference, and provide a stable and reliable stirring power guarantee for the preparation of high-quality nano materials.

[0018] According to another aspect of the present application, a feeding and mixing method for a reactor for nano material preparation is also provided, including the following steps:

[0019] S1: Before entering the micro mixing chamber, the reactants enter the device main body through the first feed inlet for preliminary mixing. The pre mixing chamber is used to uniformly mix the raw material solution to ensure the preliminary uniformity of the reactants. The mixer in this stage can be a simple static mixer or a stirring device with a lower shear force;

[0020] S2: Before the pre mixed fluid enters the main mixer, that is, the micro mixing chamber, it is further mixed through the post mixing chamber. The post mixing chamber should have a higher shear force and mixing efficiency to achieve the final uniform mixing. A high shear stirrer or a micro mixer with an optimized structure can be used in this stage;

[0021] S3: Add an appropriate amount of dispersant to the dispersant addition chamber through the second feed port to enhance the dispersibility and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of precipitates and the blockage of the reactor.

[0022] The beneficial effects that can be produced by this application include:

[0023] For a reactor for preparing nanomaterials and its feed mixing method provided by this application, before entering the micro-mixing chamber, a pre-mixing chamber is used to preliminarily and uniformly mix the raw material solutions to ensure the preliminary uniformity of the reactants. The mixing chamber at this stage can be a simple static mixing chamber or a stirring device with a lower shear force;

[0024] Before the pre-mixed fluid enters the main mixer, that is, the micro-mixing chamber, further mixing is carried out through the post-mixing chamber. The post-mixing chamber has a higher shear force and mixing efficiency to achieve the final uniform mixing;

[0025] In the post-mixing stage, an appropriate amount of dispersant is added through the second feed port to enhance the dispersibility and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of precipitates and the blockage of the reactor. The feed mixing method combining pre-mixing and post-mixing improves the uniformity of the reactants, reduces the possibility of precipitate agglomeration. Through the introduction of the dispersant and the optimized mixing method, the blockage phenomenon of the micro-mixing chamber is effectively reduced, the stability of the nanomaterial preparation process is improved, and the continuity and efficiency of production are increased. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the reactor provided in an embodiment of this application;

[0027] Figure 2 It is a schematic internal structure diagram of the reactor provided in an embodiment of this application;

[0028] Figure 3 It is a schematic structural diagram of the first sieve and its assembly in an embodiment of this application;

[0029] Figure 4 It is a schematic structural diagram of the ring and its assembly in an embodiment of this application;

[0030] Figure 5 For this application Figure 4 The enlarged structural diagram at position A;

[0031] Figure 6 For this application Figure 4 The enlarged structural diagram at position B;

[0032] Figure 7 Schematic diagram of the second connecting rod and its assembly in an embodiment of the present application;

[0033] Figure 8 Schematic diagram of the synchronous chain and its assembly in an embodiment of the present application;

[0034] Figure 9 Schematic diagram of the stirring mechanism in an embodiment of the present application.

[0035] List of components and reference numerals:

[0036] 11. Device main body; 12. Stirring mechanism; 13. Fixed plate; 14. Rotating bevel gear; 15. Driven sprocket; 16. U-shaped plate; 17. Motor; 18. First feed inlet; 19. Second feed inlet; 20. Premixing chamber; 21. Post-mixing chamber; 22. Dispersant addition chamber; 23. Micro-mixing chamber; 24. First connecting column; 25. First hole; 26. Synchronous chain; 27. Second connecting column; 28. First connecting rod; 29. First screen; 30. Third connecting column; 31. Second screen; 32. Third screen; 33. Second hole; 34. Driving sprocket; 35. Connecting plate; 36. Ring; 37. Second connecting rod; 38. Fixed frame; 39. Empty slot; 40. Limiting slot; 41. Limiting block; 42. Cleaning brush; 43. Meshing bevel gear. Specific embodiments

[0037] The present application will be described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0038] Please refer to Figures 1-9 , the present application provides a reactor for preparing nanomaterials, including a device main body 11, and further provided with a first screen 29, a second screen 31 and a third screen 32. The first screen 29 is fixedly connected to the inner wall of the device main body 11, and the upper end of the first screen 29 is a premixing chamber 20;

[0039] The second screen 31 is located below the first screen 29, the second screen 31 is fixedly connected to the inner wall of the device main body 11, and the post-mixing chamber 21 is between the second screen 31 and the first screen 29;

[0040] The third screen 32 is located below the second screen 31, the third screen 32 is fixedly connected to the inner wall of the device main body 11, the dispersant addition chamber 22 is between the second screen 31 and the third screen 32, and the lower end of the third screen 32 is a micro-mixing chamber 23;

[0041] One end of the device main body 11 is fixedly connected to a first feed inlet 18, and the first feed inlet 18 communicates with the premixing chamber 20. One end of the device main body 11 is fixedly connected to a second feed inlet 19, and the second feed inlet 19 communicates with the dispersant addition chamber 22. Before entering the micro-mixing chamber, the reactants are preliminarily mixed, and the premixing chamber is used to uniformly mix the raw material solution to ensure the preliminary uniformity of the reactants. The mixing chamber at this stage can be a simple static mixer or a stirring device with a lower shear force.

[0042] A hole one 25 is penetrated and opened at the upper end of the device main body 11. The device main body 11 is rotatably connected to a connecting column one 24 through the hole one 25. The upper end of the device main body 11 is fixedly connected to a U-shaped plate 16, and the upper end of the connecting column one 24 is rotatably connected to the U-shaped plate 16;

[0043] The upper end of the U-shaped plate 16 is fixedly connected to a motor 17. The output port of the motor 17 is fixedly connected to the connecting column one 24. A driving sprocket 34 is fixedly connected to the connecting column one 24. One end of the device main body 11 is fixedly connected to two parallel fixing plates 13;

[0044] Before the premixed fluid enters the main mixer, that is, the micro-mixing chamber, it is further mixed through the post-mixing chamber. The post-mixing chamber has a high shear force and mixing efficiency to achieve the final uniform mixing.

[0045] A connecting rod one 28 is arranged between the two fixing plates 13. The upper and lower ends of the connecting rod one 28 are rotatably connected to the corresponding fixing plates 13. The upper fixing plate 13 is rotatably connected to a connecting column two 27. The connecting column two 27 passes through the fixing plate 13 and is fixedly connected to the connecting rod one 28;

[0046] The upper end of the connecting column two 27 is fixedly connected to a driven sprocket 15. A synchronous chain 26 is arranged between the driving sprocket 34 and the driven sprocket 15. The two ends of the synchronous chain 26 are meshed and connected to the driven sprocket 15 and the driving sprocket 34. A rotating bevel gear 14 is fixedly connected to the connecting rod one 28, and a meshing bevel gear 43 is vertically meshed with one end of the rotating bevel gear 14;

[0047] Then, an appropriate amount of dispersant is added through the second feed inlet to enhance the dispersibility and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of precipitates and the blockage of the reactor. The feed mixing method combining premixing and post-mixing improves the uniformity of the reactants and reduces the possibility of precipitate agglomeration. Through the introduction of the dispersant and the optimized mixing method, the blockage phenomenon of the micro-mixing chamber is effectively reduced, the stability of the nano-material preparation process is improved, and the continuity and efficiency of production are increased.

[0048] The inner wall of the device main body 11 is rotatably connected with a ring 36. A connecting plate 35 is fixedly connected inside the ring 36. The lower end of the first connecting column 24 is fixedly connected with the connecting plate 35. The lower end of the ring 36 is fixedly connected with a second connecting rod 37. A cleaning brush 42 is movably connected to the upper surface of the first sieve 29. The upper end of the cleaning brush 42 is fixedly connected with a fixing frame 38. An empty slot 39 is opened at the upper end of the fixing frame 38. The lower end of the second connecting rod 37 is located in the empty slot 39.

[0049] Both the front and rear ends of the fixing frame 38 are fixedly connected with limiting blocks 41. Limiting slots 40 are opened on the inner wall of the device main body 11. The two limiting slots 40 correspond to the two limiting blocks 41 in position. The two limiting blocks 41 are slidably connected to the device main body 11 through the two limiting slots 40.

[0050] By providing the cleaning brush 42, after the staff feeds materials through the first feeding port 18, the motor 17 is started. The motor 17 drives the first connecting column 24 to rotate. The first connecting column 24 drives the connecting plate 35 and the ring 36 to rotate. When the ring 36 rotates, it will drive the second connecting rod 37 to move. The lower end of the second connecting rod 37 is located in the empty slot 39 of the fixing frame 38. At this time, the fixing frame 38 will drive the cleaning brush 42 to move.

[0051] Since the fixing frame 38 will drive the limiting blocks 41 to move, and the limiting blocks 41 are slidably connected to the device main body 11 through the limiting slots 40, at this time, the fixing frame 38 and the cleaning brush 42 will reciprocally move along the surface of the first sieve 29. When the cleaning brush 42 moves, it will clean the blockages on the surface of the first sieve 29, so that the surface of the first sieve 29 is no longer blocked by raw materials. Through the above-mentioned linkage cleaning mechanism of the cleaning brush 42 and various components, the first sieve 29 can be effectively kept unobstructed. This not only avoids the reduction of the mixing efficiency caused by raw material blockage, but also reduces the frequency of equipment shutdown for cleaning, extends the service life of the equipment, and ensures the continuous, stable and efficient progress of the nano-material preparation process.

[0052] A second hole 33 is penetrated and opened at the side end of the device main body 11. The device main body 11 is rotatably connected with a third connecting column 30 through the second hole 33. One end of the third connecting column 30 is fixedly connected with a meshing bevel gear 43. A stirring mechanism 12 is fixedly connected to the side end of the third connecting column 30. One end of the stirring mechanism 12 is rotatably connected to the inner wall of the device main body 11. By providing the stirring mechanism 12, when the first connecting column 24 rotates, the first connecting column 24 will drive the driving sprocket 34 to rotate. Since the driven sprocket 15 on the second connecting column 27 is meshed with the driving sprocket 34 through the synchronous chain 26;

[0053] Therefore, the connecting column two 27 will also rotate with the rotation of the connecting column one 24. The connecting column two 27 drives the connecting rod one 28 and the rotating bevel gear 14 to rotate. The rotating bevel gear 14 drives the meshing bevel gear 43 and the connecting column three 30 to rotate. When the connecting column three 30 rotates, it drives the stirring mechanism 12 to rotate. This linkage rotation design of the stirring mechanism 12 can fully stir and mix the materials inside the device, strengthen the interaction of materials between chambers, improve the mixing uniformity and reaction efficiency, reduce material retention and local concentration differences, and provide a stable and reliable stirring power guarantee for the preparation of high-quality nanomaterials.

[0054] The present application also provides a feeding and mixing method for a reactor used in the preparation of nanomaterials, including the following steps:

[0055] S1: Before entering the micro-mixing chamber 23, the reactants enter the device main body 11 through the first feeding port 18 for preliminary mixing. The pre-mixing chamber 20 is used to uniformly mix the raw material solution to ensure the preliminary uniformity of the reactants. The mixing chamber at this stage can be a simple static mixing chamber or a stirring device with a lower shear force.

[0056] S2: Before the pre-mixed fluid enters the main mixer, i.e., the micro-mixing chamber 23, it is further mixed through the post-mixing chamber 21. The post-mixing chamber 21 has a higher shear force and mixing efficiency to achieve the final uniform mixing.

[0057] S3: An appropriate amount of dispersant is added to the dispersant addition chamber 22 through the second feeding port 19 to enhance the dispersibility and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of precipitates and the blockage of the reactor.

[0058] Working principle:

[0059] The first step is to preliminarily mix the reactants before entering the micro-mixing chamber 23. The pre-mixing chamber 20 is used to uniformly mix the raw material solution to ensure the preliminary uniformity of the reactants. The mixer at this stage can be a simple static mixer or a stirring device with a lower shear force.

[0060] The second step is to further mix through the post-mixing chamber 21 before the pre-mixed fluid enters the micro-mixing chamber 23. The post-mixing chamber 21 has a higher shear force and mixing efficiency to achieve the final uniform mixing.

[0061] Step 3: Add an appropriate amount of dispersant to the dispersant addition chamber to enhance the dispersibility and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of precipitates and the blockage of the reactor. The feeding and mixing method combining pre-mixing and post-mixing improves the uniformity of the reactants and reduces the possibility of precipitate agglomeration. Through the introduction of the dispersant and the optimized mixing method, the blockage phenomenon in the micromixing chamber is effectively reduced, the stability of the nanomaterial preparation process is improved, and the continuity and efficiency of production are increased.

[0062] Step 4: With the cleaning brush 42 provided, after the staff feeds materials through the first feeding port 18, start the motor 17. The motor 17 drives the first connecting column 24 to rotate. The first connecting column 24 drives the connecting plate 35 and the ring 36 to rotate. When the ring 36 rotates, it will drive the second connecting rod 37 to move. The lower end of the second connecting rod 37 is located in the empty slot 39 of the fixed frame 38. At this time, the fixed frame 38 will drive the cleaning brush 42 to move. Since the fixed frame 38 will drive the limit block 41 to move, and the limit block 41 is slidably connected to the device main body 11 through the limit slot 40, at this time, the fixed frame 38 and the cleaning brush 42 will reciprocate along the surface of the first sieve 29. When the cleaning brush 42 moves, it will clean the blockage on the surface of the first sieve 29, so that the surface of the first sieve 29 is no longer blocked by the raw materials.

[0063] Through the above-mentioned linkage cleaning mechanism of the cleaning brush 42 and various components, the smoothness of the first sieve 29 can be effectively maintained. This not only avoids the reduction of mixing efficiency caused by raw material blockage, but also reduces the frequency of equipment shutdown for cleaning, extends the service life of the equipment, and ensures the continuous, stable and efficient progress of the nanomaterial preparation process.

[0064] Step 5: With the stirring mechanism 12 provided, when the first connecting column 24 rotates, the first connecting column 24 will drive the driving sprocket 34 to rotate. Since the driven sprocket 15 on the second connecting column 27 is engaged with the driving sprocket 34 through the synchronous chain 26, the second connecting column 27 will also rotate as the first connecting column 24 rotates. The second connecting column 27 drives the first connecting rod 28 and the rotating bevel gear 14 to rotate. The rotating bevel gear 14 drives the meshing bevel gear 43 and the third connecting column 30 to rotate. When the third connecting column 30 rotates, it will drive the stirring mechanism 12 to rotate.

[0065] This linkage rotation design of the stirring mechanism 12 can fully stir and mix the materials inside the device. It strengthens the interaction of materials between chambers, improves the mixing uniformity and reaction efficiency, reduces material retention and local concentration differences, and provides a stable and reliable stirring power guarantee for the preparation of high-quality nanomaterials.

[0066] The above are only some embodiments of the present application and do not impose any form of limitation on the present application. Although the present application is disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the scope of the technical solution of the present application, making some changes or modifications using the technical content disclosed above is equivalent to equivalent implementation cases and all fall within the scope of the technical solution.

Claims

1. A reactor for preparing nanomaterials, characterized in that: The device comprises a main body; Also provided are screen one, screen two and screen three; Wherein, the screen one is fixedly connected to the inner wall of the device body, and the upper end of the screen one is a pre-mixing chamber; The second screen is located at the lower end of the first screen, the second screen is fixedly connected to the inner wall of the device body, and a rear mixing chamber is formed between the second screen and the first screen; The screen three is located at the lower end of the screen two, the screen three is fixedly connected to the inner wall of the device body, the dispersant adding chamber is between the screen two and the screen three, and the lower end of the screen three is the micro-mixing chamber.

2. A reactor for preparing nanomaterials according to claim 1, characterized in that: One end of the device body is fixedly connected to a feed port 1, and the feed port 1 is communicated with the premixing chamber; Among them, one end of the device body is fixedly connected with a second feed port, and the second feed port is communicated with the dispersant addition chamber.

3. A reactor for preparing nanomaterials according to claim 2, characterized in that: A hole is formed through the upper end of the device body, and the device body is rotatably connected to a connecting column through the hole. Among them, the upper end of the device body is fixedly connected with a U-shaped plate, and the upper end of the connecting column 1 is rotatably connected to the U-shaped plate.

4. A reactor for preparing nanomaterials according to claim 3, characterized in that: The upper end of the U-shaped plate is fixedly connected with a motor, and the output port of the motor is fixedly connected to a connecting column; Wherein, a driving sprocket is fixedly connected to the first connecting column, and two mutually parallel fixing plates are fixedly connected to one end of the device body.

5. A reactor for preparing nanomaterials according to claim 4, characterized in that: A connecting rod 1 is provided between the two fixing plates, and the upper and lower ends of the connecting rod 1 are both rotatably connected to the corresponding fixing plates; Among them, the fixed plate located at the upper end is rotatably connected with the connecting column 2, and the connecting column 2 passes through the fixed plate and is fixedly connected with the connecting rod 1.

6. A reactor for preparing nanomaterials according to claim 5, characterized in that: The upper end of the second connecting column is fixedly connected with a driven sprocket, a synchronous chain is arranged between the driving sprocket and the driven sprocket, and both ends of the synchronous chain are meshed and connected with the driven sprocket and the driving sprocket; Wherein, a rotating bevel gear is fixedly connected to the first connecting rod, and one end of the rotating bevel gear is vertically meshed with a meshing bevel gear.

7. A reactor for preparing nanomaterials according to claim 6, characterized in that: The inner wall of the device body is rotatably connected with a circular ring, and the interior of the circular ring is fixedly connected with a connecting plate; Wherein, the lower end of the connecting column 1 is fixedly connected to the connecting plate, and the lower end of the ring is fixedly connected to the connecting rod 2.

8. A reactor for preparing nanomaterials according to claim 7, characterized in that: The upper surface of the screen mesh 1 is movably connected with a cleaning brush, the upper end of the cleaning brush is fixedly connected with a fixing frame, and the upper end of the fixing frame is provided with an empty slot; Among them, the lower end of the second connecting rod is located in the empty groove, the front and rear ends of the fixed frame are fixedly connected to the limiting blocks, the inner wall of the device body is provided with a limiting groove, and the two limiting blocks are slidably connected to the device body through the two limiting grooves.

9. A reactor for preparing nanomaterials according to claim 8, characterized in that: A second hole is formed through the side end of the device body, and the device body is rotatably connected to a third connecting column through the second hole, and one end of the third connecting column is fixedly connected to the meshing bevel gear; Among them, the side end of the connecting column three is fixedly connected with a stirring mechanism, and one end of the stirring mechanism is rotatably connected to the inner wall of the device body.

10. A feed mixing method for a reactor for preparing nanomaterials, characterized in that: The following steps are involved: S1: Before entering the micro-mixing chamber, the reactants are introduced into the device body through the feed port 1 for preliminary mixing, and the raw material solution is uniformly mixed using the pre-mixing chamber to ensure the initial uniformity of the reactants; S2: Before the pre-mixed fluid enters the main mixer, i.e. the micro-mixing chamber, it is further mixed by the post-mixing chamber, which has a higher shear force and mixing efficiency to achieve the final uniform mixing; S3: Add an appropriate amount of dispersant through the feed port 2 for the dispersant addition chamber to enhance the dispersion and uniformity of the reactants. The selection and addition amount of the dispersant should be optimized according to the characteristics of the reaction system to prevent the agglomeration of the precipitate and the blockage of the reactor.

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