Nanometer powder manufacturing equipment capable of directly carrying out surface treatment

Abstract

The invention discloses nano-powder manufacturing equipment capable of directly performing surface treatment, and relates to the technical field of nano-powder manufacturing equipment.The nano-powder manufacturing equipment comprises an evaporation chamber, a condensation chamber, a cyclone collecting device, a cooling chamber and a vacuum pump, the condensation chamber is arranged at the top of the evaporation chamber, and the cyclone collecting device is arranged at the bottom of the evaporation chamber; connecting pipelines are installed among the condensation chamber, the cyclone collecting device, the cooling chamber and the vacuum pump, a spraying assembly is installed on the connecting pipeline between the condensation chamber and the cyclone collecting device, a gas injection pipe and a liquid injection pipe are arranged on the spraying assembly, a sealing gasket is arranged on the upper surface of the spraying assembly, and a gas outlet pipe is arranged on the liquid injection pipe. According to the scheme, the problems that in the prior art, when nano-powder manufacturing equipment is used for producing nano-particles, the nano-particles are prone to being sintered to form long-chain-shaped and agglomerated large particles, follow-up surface modification operation is affected, and therefore the production efficiency is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of nano powder manufacturing equipment, in particular to nano powder manufacturing equipment capable of directly performing surface treatment. Background Art

[0002] Nanopowder refers to ultrafine particles with a particle size range of 1nm to 100nm. It has extremely important application value in research fields such as metallurgy, machinery, chemical industry, electronics, national defense, nuclear technology, aerospace, etc. At present, there are many methods for preparing nanopowder, such as evaporation condensation method, electric explosion method, etc. Among them, the evaporation condensation method is to heat the raw materials and evaporate them into gaseous state, and then quickly cool the vapor to obtain nanopowder. The nanopowder obtained by the evaporation condensation method has the characteristics of high purity, good particle shape, and narrow particle size distribution range;

[0003] For example, the Chinese authorized patent with announcement number CN214053655U (efficient and controllable nanopowder production equipment): includes an evaporation device, a continuous feeding device and a condensation device, the evaporation device includes a first cabin, an evaporation tube, and a crucible and an induction coil both arranged in the first cabin, the induction coil is arranged around the outer wall of the crucible, the crucible includes a crucible body with a heating chamber and a cover body arranged on the crucible body, one end of the evaporation tube passes through the cover body to be connected to the heating chamber and the other end is connected to the condensation device, the continuous feeding device includes a feeding cabin, a feeding pipe and a first air inlet pipe, one end of the feeding pipe is connected to the feeding cabin and the other end passes through the cover body to be connected to the heating chamber, the first air inlet pipe is connected to the feeding pipe to form a passage, the above-mentioned nanopowder production equipment has high production efficiency and low production cost, and can effectively realize the control of the particle size of the nanopowder, so that the nanopowder production equipment can prepare nanopowders of corresponding particle sizes for different application fields, and has good general performance.

[0004] However, the nanopowder manufacturing equipment in the above-mentioned prior art is prone to sintering to form long chain and agglomerated large particles when producing nanoparticles, and also affects the subsequent surface modification operation, thereby affecting the production efficiency; therefore, it does not meet the existing needs. In this regard, we propose a nanopowder manufacturing equipment that can directly perform surface treatment. Summary of the invention

[0005] The purpose of the present invention is to provide a nanopowder manufacturing device that can directly perform surface treatment, so as to solve the problem that the nanopowder manufacturing device in the prior art mentioned in the above background technology is easy to sinter to form long chain and agglomerated large particles when producing nanoparticles, and also affects subsequent surface modification operations, thereby affecting production efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a nano-powder manufacturing equipment that can directly perform surface treatment, comprising an evaporation chamber, a condensation chamber, a cyclone collection device, a cooling chamber and a vacuum pump, wherein a condensation chamber is arranged on the top of the evaporation chamber, and connecting pipes are installed between the condensation chamber, the cyclone collection device, the cooling chamber and the vacuum pump, a spray assembly is installed on the connecting pipe between the condensation chamber and the cyclone collection device, an air injection pipe and a liquid injection pipe are arranged on the spray assembly, a sealing gasket is arranged on the upper surface of the spray assembly, a connecting seat is installed on the sealing gasket, and the connecting seat is threadedly connected to the spray assembly.

[0007] Preferably, a nozzle is installed on the connecting seat, nozzles are arranged on both sides of the top of the nozzle, and nozzles are arranged inside the nozzles.

[0008] Preferably, a solid flow detector is provided on one side of the spray assembly, and a cavity observation port is provided on one end surface of the evaporation chamber, the cooling chamber, the cyclone collection device and the cooling chamber.

[0009] Preferably, a filter bag observation port is provided at the top of the cooling chamber, a support frame is provided at the bottom of the evaporation chamber, and an air valve pipe is provided on one end surface of the evaporation chamber.

[0010] Preferably, a crucible is disposed inside the evaporation chamber, an electromagnetic induction coil is disposed on the surface of the crucible, and a plurality of the electromagnetic induction coils are disposed.

[0011] Preferably, a power supply seat is provided at the bottom of the crucible, and a flow regulating pipe is provided at the top of the crucible.

[0012] Preferably, an air outlet nozzle is provided on one side of the flow regulating pipe, and a cooling air flow pipe is installed on the top of the air outlet nozzle.

[0013] Preferably, a first filter bag is installed inside the cyclone collecting device, a collecting box is provided at the bottom of the cyclone collecting device, a connecting port is provided at the top of the collecting box, and the collecting box is threadedly connected to the bottom of the cyclone collecting device through the connecting port.

[0014] Preferably, a discharge port is provided at the bottom of the cooling chamber, a second filter bag is installed inside the cooling chamber, a mounting plate is provided at the bottom of the vacuum pump, and an exhaust port is provided on one side of the vacuum pump.

[0015] Preferably, the processing steps of the nanopowder manufacturing equipment capable of directly performing surface treatment include the following steps:

[0016] Step 1: Place the raw material in the crucible inside the evaporation chamber. The evaporation chamber is composed of an electromagnetic induction coil, a crucible, a cavity observation port, an air outlet nozzle and an air valve pipe. The evaporation chamber is a double-layer stainless steel cavity, which is used to heat the metal raw material and quickly vaporize the metal;

[0017] Step 2: The metal gas flow evaporated in the evaporation chamber can be regulated by a flow regulating pipeline, and the cooling gas flow pipeline cools the metal gas flow after the metal gas flow is ejected from the gas outlet to form nuclei and primary nanoparticles;

[0018] Step 3: After the nanoparticles move forward in the connecting pipe and pass through the solid flow detector, the amount of solids passing through the unit cross section per unit time is recorded. The spraying component dynamically adjusts the amount of dispersant through the nozzle, nozzle and nozzle, and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward;

[0019] Step 4: The coated nanoparticles continue to move forward in the connecting pipe and then enter the cyclone collection device for initial classification and screening. After the particles are cyclone-separated in the cyclone collection device, some uncoated particles will spontaneously sinter due to the high activity of the initial particles, causing the particle size to increase and thus enter the collection box of the cyclone collection device. The fine particles are then screened out by the filter bag and continue to move forward to the cooling chamber and are discharged through the discharge port.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention sets an evaporation chamber, which is composed of an electromagnetic induction coil, a crucible, a cavity observation port, an air outlet nozzle and an air valve pipe. A spray assembly is set on the connecting pipe between the condensation chamber and the cyclone collection device. The raw material is placed in the crucible inside the evaporation chamber. The metal airflow evaporated in the evaporation chamber can be regulated by a flow regulating pipe. The cooling airflow pipe cools the metal airflow after it is ejected from the air outlet nozzle to form primary nanoparticles. The nanoparticles move forward in the connecting pipe and pass through the solid flow detector to record the amount of solids passing through the unit cross section per unit time. The spray assembly dynamically adjusts the amount of dispersant through the nozzle, nozzle and nozzle, and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward. The coated nanoparticles are placed in the connecting pipe. After continuing to move forward in the channel, the particles enter the cyclone collecting device for initial grading and screening. After the particles are cyclone separated in the cyclone collecting device, some uncoated particles will spontaneously sinter due to the high activity of the initial particles, causing the particle size to increase and thus enter the collection box of the cyclone collecting device. The fine particles are then screened out by the filter bag and continue to move forward to the cooling chamber and are discharged through the discharge port. This realizes the coating of the nanoparticles in production and achieves the effect of surface modification. The cyclone collecting device screens the particles, which is convenient for subsequent secondary processing of larger particles. This solves the problem that the nanopowder manufacturing equipment in the prior art is easily sintered to form long chain and agglomerated large particles when producing nanoparticles, and also affects the subsequent surface modification operation, thereby affecting the production efficiency.

[0022] 2. By arranging separate air injection pipes and liquid injection pipes on the spraying mechanism, it can be ensured that it is more uniform during spraying. The collection box is threadedly connected to the cyclone collection device, which is convenient for disassembly, assembly and use of the collection box.

[0023] 3. A cooling air flow duct is provided on the gas outlet of the crucible. After the metal is rapidly heated to near its boiling point by an electromagnetic coil, the metal melt evaporates and quickly leaves the crucible. A cooling gas is directly sprayed from the upper part of the crucible to rapidly cool the metal vapor to nucleate and form nanoparticles, which continue to move forward and cool down. When the temperature in the duct drops below the boiling point of the selected dispersant, the nozzle there sprays atomized dispersant to coat and disperse the nanoparticles, and then continues to move, thereby ensuring the quality of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the nano powder manufacturing equipment of the present invention;

[0025] Figure 2 It is an enlarged schematic diagram of the internal structure of the evaporation chamber of the present invention;

[0026] Figure 3 It is an enlarged schematic diagram of the local structure of the crucible of the present invention;

[0027] Figure 4 It is an enlarged schematic diagram of the spray assembly structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the steps of manufacturing the nano powder of the present invention;

[0029] In the figure: 1. Evaporation chamber; 2. Condensation chamber; 3. Spraying assembly; 4. Cyclone collecting device; 5. Collecting box; 6. Cooling chamber; 7. Vacuum pump; 8. Support frame; 9. Cavity observation port; 10. Connecting pipe; 11. Solid flow detector; 12. First filter bag; 13. Connecting port; 14. Discharge port; 15. Second filter bag; 16. Mounting plate; 17. Air valve pipe; 18. Crucible; 19. Flow regulating pipe; 20. Air outlet nozzle; 21. Cooling air flow pipe; 22. Electromagnetic induction coil; 23. Power supply seat; 24. Sealing pad; 25. Air injection pipe; 26. Liquid injection pipe; 27. Connecting seat; 28. Nozzle; 29. ​​Nozzle; 30. Nozzle. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-5An embodiment of the present invention is as follows: a nano powder manufacturing device that can directly perform surface treatment, comprising an evaporation chamber 1, a condensation chamber 2, a cyclone collection device 4, a cooling chamber 6 and a vacuum pump 7, wherein the evaporation chamber 1 is provided with a condensation chamber 2 on the top, and connecting pipes 10 are installed between the condensation chamber 2, the cyclone collection device 4, the cooling chamber 6 and the vacuum pump 7, and a spray assembly 3 is installed on the connecting pipe 10 between the condensation chamber 2 and the cyclone collection device 4, and an air injection pipe 25 and a liquid injection pipe 26 are arranged on the spray assembly 3, and the spray assembly 3 is provided with a gas injection pipe 25 and a liquid injection pipe 26 on the top. The surface is provided with a sealing gasket 24, on which a connecting seat 27 is installed, and the connecting seat 27 is threadedly connected to the spray assembly 3. The raw material is placed in the crucible 18 inside the evaporation chamber 1. The evaporation chamber 1 is composed of an electromagnetic induction coil 22, a crucible 18, a cavity observation port 9, an air outlet nozzle 20 and an air valve pipe 17. The evaporation chamber 1 is a double-layer stainless steel cavity, which is used to heat the metal raw material and quickly vaporize the metal; the metal gas flow evaporated in the evaporation chamber 1 can be adjusted by the flow regulating pipe 19, and the cooling air flow pipe 21 is in the metal gas flow. After being ejected from the air outlet 20, the metal airflow is cooled and nucleated to form primary nanoparticles; after the nanoparticles move forward in the connecting pipe 10 and pass through the solid flow detector 11, the amount of solids passing through the unit cross-section per unit time is recorded, and the spraying assembly 3 dynamically adjusts the amount of dispersant through the nozzle 28, the nozzle 29 and the nozzle 30, and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward; the coated nanoparticles continue to move forward in the connecting pipe 10 and enter the cyclone collection device 4 for primary classification and screening. After the particles are cyclone-separated in the cyclone collection device 4, some uncoated particles will spontaneously sinter due to the high activity of the primary particles, so that the particle size increases and enters the collection box 5 of the cyclone collection device 4, and then the fine particles are screened out by the filter bag and continue to move forward to the cooling chamber 6, and can be discharged through the discharge port 14, which solves the problem that the nanopowder manufacturing equipment in the prior art is easy to sinter to form long chain and agglomerated large particles when producing nanoparticles, and also affects the subsequent surface modification operation, thereby affecting the production efficiency.

[0032] See also Figure 1-Figure 5 A nozzle 28 is installed on the connecting seat 27 , and nozzles 29 are arranged on both sides of the top of the nozzle 28 , and a nozzle 30 is arranged inside the nozzle 29 .

[0033] See also Figure 1-Figure 5 A solid flow detector 11 is provided on one side of the spraying assembly 3, and a cavity observation port 9 is provided on one side end face of the evaporation chamber 1, the cooling chamber 6, the cyclone collecting device 4 and the cooling chamber 6. The metal airflow evaporated in the evaporation chamber 1 can be regulated by a flow regulating pipe 19, and the cooling airflow pipe 21 cools the metal airflow after it is ejected from the air outlet nozzle 20 to form primary nanoparticles.

[0034] See also Figure 1-Figure 5 A filter bag observation port is provided at the top of the cooling chamber 6 , a support frame 8 is provided at the bottom of the evaporation chamber 1 , and an air valve pipe 17 is provided on one end surface of the evaporation chamber 1 .

[0035] See also Figure 1-Figure 5 A crucible 18 is arranged inside the evaporation chamber 1, and an electromagnetic induction coil 22 is arranged on the surface of the crucible 18. There are several electromagnetic induction coils 22. After the metal is quickly heated to near its boiling point by the electromagnetic coil, the metal melt evaporates and quickly leaves the crucible 18. Cooling gas can be directly sprayed from the upper part of the crucible 18 to rapidly cool the metal vapor to nucleate and form nanoparticles and continue to move forward and cool down. When the temperature in the pipeline drops below the boiling point of the selected dispersant, the nozzle 29 at this location sprays atomized dispersant to coat and disperse the nanoparticles.

[0036] See also Figure 1-Figure 5 A power supply seat 23 is provided at the bottom of the crucible 18 , and a flow regulating pipe 19 is provided at the top of the crucible 18 .

[0037] See also Figure 1-Figure 5 An air outlet nozzle 20 is provided on one side of the flow regulating pipe 19, and a cooling air flow pipe 21 is installed on the top of the air outlet nozzle 20. The nanoparticles move forward in the connecting pipe 10 and pass through the solid flow detector 11 to record the amount of solids passing through the unit cross-section per unit time. The spraying component 3 dynamically adjusts the amount of dispersant through the nozzle 28, the nozzle 29 and the nozzle 30, and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward.

[0038] See also Figure 1-Figure 5 A first filter bag 12 is installed inside the cyclone collection device 4, a collection box 5 is provided at the bottom of the cyclone collection device 4, and a connection port 13 is provided on the top of the collection box 5. The collection box 5 is threadedly connected to the bottom of the cyclone collection device 4 through the connection port 13. After the metal is quickly heated to near its boiling point by an electromagnetic coil, the metal melt evaporates and quickly leaves the crucible 18. Cooling gas can be directly sprayed from the upper part of the crucible 18 to rapidly cool the metal vapor to nucleate and form nanoparticles and continue to move forward and cool down. When the temperature in the pipeline drops below the boiling point of the selected dispersant, the nozzle 29 there sprays atomized dispersant to coat and disperse the nanoparticles, and then continues to move and perform initial screening in the cyclone collection device 4. The coarse particles are in the collection box 5 of the cyclone collection device 4, and the fine particles are collected in the subsequent collection device to obtain the corresponding coated nanoparticles.

[0039] See also Figure 1-Figure 5A discharge port 14 is provided at the bottom of the cooling chamber 6, a second filter bag 15 is installed inside the cooling chamber 6, a mounting plate 16 is provided at the bottom of the vacuum pump 7, and an exhaust port is provided on one side of the vacuum pump 7. The coated nanoparticles continue to move forward in the connecting pipe 10 and then enter the cyclone collecting device 4 for primary classification and screening. After the particles are cyclone separated in the cyclone collecting device 4, some uncoated particles will spontaneously sinter due to the high activity of the initial particles, so that the particle size increases and enters the collecting box 5 of the cyclone collecting device 4. The fine particles are then screened out by the filter bag and continue to move forward to the cooling chamber 6 and are discharged through the discharge port 14. All cavities are connected by pipes, and the pipe flanges are sealed with rubber rings. The system vacuum is maintained by the vacuum pump, which is fully opened during the preparation of powder making, the start of powder making, the end of powder making, and the completion of cooling.

[0040] See also Figure 1-Figure 5 , a processing step of a nano powder manufacturing device that can directly perform surface treatment, comprising the following steps:

[0041] Step 1: placing the raw material in a crucible 18 inside an evaporation chamber 1, wherein the evaporation chamber 1 is composed of an electromagnetic induction coil 22, a crucible 18, a cavity observation port 9, an air outlet nozzle 20 and an air valve pipe 17. The evaporation chamber 1 is a double-layer stainless steel cavity, which is used to heat the metal raw material and quickly vaporize the metal and evaporate it. After the metal is quickly heated to near its boiling point by the electromagnetic coil, the metal melt evaporates and quickly leaves the crucible 18. A cooling gas can be directly sprayed from the upper part of the crucible 18 to rapidly cool the metal vapor to form nuclei and form nanoparticles, and then continue to move forward and cool down. When the temperature in the pipeline drops below the boiling point of the selected dispersant, the nozzle 29 there sprays atomized dispersant to coat and disperse the nanoparticles, and then continues to move, and performs initial screening in the cyclone collection device 4. The coarse particles are in the collection box 5 of the cyclone collection device 4, and the fine particles are collected in the subsequent collection device to obtain the corresponding coated nanoparticles;

[0042] Step 2: The metal gas flow evaporated in the evaporation chamber 1 can be regulated by the flow regulating pipe 19, and the cooling gas flow pipe 21 cools the metal gas flow after it is ejected from the gas outlet nozzle 20 to form primary nanoparticles;

[0043] Step 3: After the nanoparticles move forward in the connecting pipe 10 and pass through the solid flow detector 11, the amount of solids passing through the unit cross section per unit time is recorded. The spraying assembly 3 dynamically adjusts the amount of dispersant through the nozzle 28, the nozzle 29 and the nozzle 30, and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward;

[0044] Step 4: The coated nanoparticles continue to move forward in the connecting pipe 10 and then enter the cyclone collecting device 4 for initial grading and screening. After the particles are cyclone separated in the cyclone collecting device 4, some uncoated particles will spontaneously sinter due to the high activity of the initial particles, causing the particle size to increase and thus enter the collecting box 5 of the cyclone collecting device 4. The fine particles are then screened out by the filter bag and continue to move forward to the cooling chamber 6 and are discharged through the discharge port 14.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A nano powder manufacturing device capable of directly performing surface treatment, comprising an evaporation chamber (1), a condensation chamber (2), a cyclone collection device (4), a cooling chamber (6) and a vacuum pump (7), Features: A condensation chamber (2) is arranged on the top of the evaporation chamber (1); connecting pipes (10) are installed between the condensation chamber (2), the cyclone collection device (4), the cooling chamber (6) and the vacuum pump (7); a spray assembly (3) is installed on the connecting pipe (10) between the condensation chamber (2) and the cyclone collection device (4); an air injection pipe (25) and a liquid injection pipe (26) are arranged on the spray assembly (3); a sealing gasket (24) is arranged on the upper surface of the spray assembly (3); a connecting seat (27) is installed on the sealing gasket (24); and the connecting seat (27) is threadedly connected to the spray assembly (3).

2. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: A nozzle (28) is installed on the connection seat (27), and nozzles (29) are arranged on both sides of the top of the nozzle (28), and a nozzle (30) is arranged inside the nozzle (29).

3. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: A solid flow detector (11) is provided on one side of the spray assembly (3), and a cavity observation port (9) is provided on one side end surface of the evaporation chamber (1), the cooling chamber (6), the cyclone collection device (4) and the cooling chamber (6).

4. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: The top of the cooling chamber (6) is provided with a filter bag observation port, the bottom of the evaporation chamber (1) is provided with a support frame (8), and one side end surface of the evaporation chamber (1) is provided with an air valve pipe (17).

5. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: A crucible (18) is arranged inside the evaporation chamber (1), an electromagnetic induction coil (22) is arranged on the surface of the crucible (18), and a plurality of the electromagnetic induction coils (22) are arranged.

6. The nano powder manufacturing device capable of directly performing surface treatment according to claim 5, Features: The bottom of the crucible (18) is provided with an electric seat (23), and the top of the crucible (18) is provided with a flow regulating pipeline (19).

7. The nano powder manufacturing device capable of directly performing surface treatment according to claim 6, Features: An air outlet nozzle (20) is provided on one side of the flow regulating pipe (19), and a cooling air flow pipe (21) is installed on the top of the air outlet nozzle (20).

8. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: A first filter bag (12) is installed inside the cyclone collection device (4), a collection box (5) is arranged at the bottom of the cyclone collection device (4), a connection port (13) is arranged at the top of the collection box (5), and the collection box (5) is threadedly connected to the bottom of the cyclone collection device (4) via the connection port (13).

9. The nano powder manufacturing device capable of directly performing surface treatment according to claim 1, Features: The bottom of the cooling chamber (6) is provided with a discharge port (14), a second filter bag (15) is installed inside the cooling chamber (6), a mounting plate (16) is provided at the bottom of the vacuum pump (7), and an exhaust port is provided on one side of the vacuum pump (7).

10. A processing step of a nano powder manufacturing device capable of directly performing surface treatment, implemented based on any one of the processing devices of claims 1 to 9, It is characterized in that The following steps are involved: Step 1: placing the raw material in a crucible (18) inside an evaporation chamber (1), wherein the evaporation chamber (1) is composed of an electromagnetic induction coil (22), a crucible (18), a cavity observation port (9), an air outlet nozzle (20) and an air valve pipe (17), and the evaporation chamber (1) is a double-layer stainless steel cavity, which is used to heat the metal raw material and quickly vaporize the metal; Step 2: The metal gas flow evaporated in the evaporation chamber (1) can be regulated by the flow regulating pipe (19), and the cooling gas flow pipe (21) cools the metal gas flow after it is ejected from the gas outlet nozzle (20) to form nuclei and primary nanoparticles; Step 3: After the nanoparticles move forward in the connecting pipe (10) and pass through the solid flow detector (11), the amount of solids passing through the unit cross section per unit time is recorded, and the spraying assembly (3) dynamically adjusts the amount of dispersant through the nozzle (28), the nozzle (29) and the nozzle (30), and atomizes the dispersant in the pipe to coat the surface of the nanoparticles moving forward; Step 4: The coated nanoparticles continue to move forward in the connecting pipe (10) and enter the cyclone collection device (4) for primary classification and screening. After the particles are cyclone-separated in the cyclone collection device (4), some uncoated particles will spontaneously sinter due to the high activity of the initial particles, causing the particle size to increase and enter the collection box (5) of the cyclone collection device (4). The fine particles are then screened out by the filter bag and continue to move forward to the cooling chamber (6) and are discharged through the discharge port (14).

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