Rotary spray device and method of use, atomized droplets and powder particles

Abstract

The application provides a rotary spraying device and a method for using the same, atomized liquid droplets and powder particles. The rotary spraying device comprises a gas supply unit, a liquid supply unit, and a jet device. The gas supply unit comprises a compressed gas supply device, a pipeline, and the jet device. The compressed gas supply device is connected to the jet device through the pipeline. The liquid supply unit comprises a rotating shaft, a disc screen, and a liquid storage container. The disc screen is connected to the rotating shaft and rotates with the rotating shaft. The liquid storage container is used for storing liquid. The liquid storage container is provided with an opening for supplying liquid in the liquid storage container to the disc screen. The jet device is arranged above the disc screen, and the jet direction of the jet device is towards the disc screen.

Description

Technical Field

[0001] This application relates to the field of spray equipment technology, and in particular to a rotary spray device and its usage method, atomized droplets and powder particles. Background Technology

[0002] Spraying, or artificial fogging, involves using a fogging system to eject liquid as extremely fine droplets. These tiny artificial droplets can drift and remain suspended in the air for a long time, forming a white mist. Spraying and atomization are fundamental to mass and heat transfer analysis, with applications ranging from gasoline engines, diesel engines, gas turbines, gas-fueled engines, aircraft and rocket engines in power machinery and engineering fields, to boilers, pharmaceuticals, fire fighting, agricultural irrigation, and everyday life.

[0003] Commonly used spraying technologies primarily break down liquids into extremely fine droplets through methods such as heating, pressurization, centrifugation, and ultrasonic vibration. However, traditional spraying methods are often limited by the poor atomization performance of the spraying device, resulting in droplets with relatively large diameters that are difficult to meet the needs of certain practical production and daily life. Therefore, it is essential to develop a spraying device with high spraying efficiency, stable operation, and fine and uniform droplets. Summary of the Invention

[0004] This application is made in view of the aforementioned state of the prior art. The purpose of this application is to provide a rotary spraying device and its method of use, which has the advantages of high spraying efficiency and fine and uniform droplets.

[0005] Embodiments of this application provide a rotary spraying device, comprising:

[0006] A gas supply unit, comprising a compressed gas supply device, a pipeline, and a jetting device, wherein the compressed gas supply device is connected to the jetting device via the pipeline;

[0007] The liquid supply unit includes a rotating shaft, a disc screen, and a liquid storage container. The disc screen is connected to the rotating shaft and rotates with the rotating shaft. The liquid storage container is used to hold liquid and has an opening for supplying the liquid in the liquid storage container to the disc screen.

[0008] The jetting device is positioned above the disc screen, and the jetting direction of the jetting device is towards the disc screen.

[0009] In at least one possible implementation, the liquid supply unit further includes a pressure reducing valve disposed in the pipeline for adjusting the pressure and / or flow rate of the gas in the pipeline.

[0010] In at least one possible implementation, the jetting direction of the jetting device is perpendicular to the disc screen;

[0011] The rotating shaft is connected to the center of the disc screen;

[0012] The liquid storage container is positioned above the disc screen, and the bottom of the liquid storage container is attached to the disc screen.

[0013] The opening of the liquid storage container includes one or more slits or multiple holes, for uniformly supplying the liquid in the liquid storage container to the disc screen.

[0014] In the direction of rotation of the disc screen, the jetting device is located downstream of the liquid storage container.

[0015] In at least one possible implementation, the liquid is a solution or molten metal, and the target product is powder particles of the corresponding material.

[0016] The rotary spray device also includes:

[0017] Drying or cooling equipment for drying or cooling atomized droplets to obtain the corresponding powder particles; and

[0018] A collection device for collecting the powder particles;

[0019] The drying or cooling equipment is located downstream of the jetting direction of the jetting device.

[0020] The liquid storage container is equipped with a heating element inside or outside, which is used to keep the material in the liquid storage container in a liquid state.

[0021] In at least one possible implementation, the liquid storage container includes an injection pump or an extruder capable of controlling the rate at which the liquid in the storage container is supplied to the disc screen.

[0022] In at least one possible implementation

[0023] The gauge pressure of the jet device is 0.01–5 MPa;

[0024] The rotational speed of the shaft is 1 to 1000 revolutions per minute;

[0025] The distance between the disc screen and the jet device is 2-10 mm;

[0026] The mesh size of the disc screen is 50 to 3000 mesh.

[0027] In at least one possible implementation, the liquid supply unit further includes a brush head, the liquid output end of the liquid storage container being connected to the brush head, the brush head contacting the disc screen for uniformly applying the liquid to the disc screen.

[0028] This application also provides a method of using a rotary spraying device, wherein the rotary spraying device is the aforementioned rotary spraying device, and the method of using the device includes:

[0029] The compressed gas supply device is activated, and the gas within the compressed gas supply device reaches the jetting device via the pipeline, and is ejected from the jetting device towards the disc screen in the form of a high-speed airflow; and

[0030] Driven by a motor, the rotating shaft rotates, causing the disc screen to rotate with the shaft. The liquid storage container supplies the liquid to the disc screen, which carries the liquid to the nozzle of the jet device. Under the action of the high-speed airflow ejected by the jet device, the liquid is atomized.

[0031] The embodiments of this application also provide an atomized droplet, which is prepared using the aforementioned rotary spray device or the aforementioned method of using the rotary spray device.

[0032] The embodiments of this application also provide a powder particle prepared using the aforementioned rotary spraying device or the aforementioned method of using the rotary spraying device. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an air supply unit according to one embodiment of this application.

[0034] Figure 2 This is a schematic diagram of the liquid supply unit according to one embodiment of this application.

[0035] Figure 3 This is a schematic diagram of the structure of a rotary spray device according to one embodiment of this application.

[0036] Figure 4 This is a flowchart illustrating a method of using a rotary spray device according to one embodiment of this application.

[0037] Figure 5 This is a size distribution diagram of atomized droplets obtained according to the first embodiment of this application.

[0038] Figure 6 This is a size distribution diagram of atomized droplets obtained according to the second embodiment of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] 100 gas supply units

[0041] 11 Compressed gas supply device

[0042] 12 Piping

[0043] 13 Pressure reducing valve

[0044] 14. Jet system

[0045] 200 liquid supply units

[0046] 21 pivots

[0047] 22 Disc screens

[0048] 23 liquid storage container

[0049] S100 Gas Supply Procedure

[0050] S200 Spraying Procedure Detailed Implementation

[0051] Exemplary embodiments of this application are described below with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It should be understood that these specific descriptions are only intended to teach those skilled in the art how to implement this application, and are not intended to exhaustively describe all possible ways of implementing this application, nor to limit the scope of this application.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] The first aspect of the embodiments of this application provides a rotary spraying device (hereinafter, sometimes simply referred to as "spraying device").

[0056] like Figure 1 , Figure 2 , Figure 3 As shown, the rotary spray device may include an air supply unit 100 and a liquid supply unit 200.

[0057] like Figure 1 As shown, the gas supply unit 100 may include a compressed gas supply device 11, a pipeline 12, a pressure reducing valve 13, and a jetting device 14. The compressed gas supply device 11 can be connected to the jetting device 14 through the pipeline 12, and the pressure reducing valve 13 may be provided on the pipeline 12.

[0058] Specifically, the compressed gas supply device 11 and the pressure reducing valve 13 are opened, and the compressed gas in the compressed gas supply device 11 passes through the pressure reducing valve 13 via the pipeline 12. The pressure and flow rate of the compressed gas are regulated by the pressure reducing valve 13, and then the gas reaches the jetting device 14 via the pipeline 12, and is ejected from the jetting device 14 in the form of a high-speed airflow. It is understood that those skilled in the art can select the specific types of the compressed gas supply device 11, pipeline 12, pressure reducing valve 13, and jetting device 14 according to actual needs, as long as the above functions can be achieved.

[0059] Preferably, the compressed gas supply device 11 can be a high-pressure gas cylinder or an air compressor; the pipeline 12 can be a plastic pipe or a metal pipe; and the jetting device 14 can be an air knife or a long strip of gas outlet pipe.

[0060] Furthermore, when the jet device 14 is an air knife or a long strip of air outlet pipe, those skilled in the art can select the width of the air knife or the long strip of air outlet pipe according to actual needs, as long as the above functions can be achieved. For example, the width W of the air knife or the long strip of air outlet pipe can be 1 to 20 cm.

[0061] Specifically, according to some embodiments of this application, the gauge pressure of the jet device 14 can be 0.01 to 5 MPa, for example, 0.01 MPa, 0.05 MPa, 0.1 MPa, 0.5 MPa, 1 MPa, 2 MPa, or 5 MPa. Those skilled in the art can select the type of compressed gas according to actual needs, as long as it is safe and environmentally friendly and does not react with the liquid in the liquid supply unit 200.

[0062] like Figure 2 As shown, the liquid supply unit 200 may include a rotating shaft 21, a disc screen 22, and a liquid storage container 23.

[0063] Specifically, the rotating shaft 21 is fixedly connected to the disc screen 22, allowing the disc screen 22 to rotate with the rotating shaft 21. The rotating shaft 21 and the disc screen 22 can be connected via a flange. It is understood that the connection method between the rotating shaft 21 and the disc screen 22 is not limited to this; for example, they can be connected by welding, bolting, etc. The liquid storage container 23 can be fixedly mounted above the disc screen 22 via a liquid storage container bracket or other means (the support method of the liquid storage container is not shown in the figure). The bottom of the liquid storage container 23 can be attached to the disc screen 22 or at a certain distance from it.

[0064] Optionally, the bottom of the liquid storage container 23 may have one or more slits, through which the liquid in the liquid storage container 23 can be spread or dripped onto the disc screen 22.

[0065] Optionally, the bottom of the liquid storage container 23 can be provided with multiple holes, and the liquid in the liquid storage container 23 can be spread or dripped onto the disc screen 22 more evenly through the multiple holes at its bottom.

[0066] Optionally, the liquid storage container 23 can also be equipped with an injection pump. It is understood that the type of injection pump selected for the liquid storage container 23 may include large-scale liquid supply equipment used in industrial applications, such as extruders. Using this type of equipment allows for control of the rate at which the liquid in the liquid storage container 23 is supplied to the disc screen 22.

[0067] Optionally, the liquid supply unit 200 may also include a brush head, and the liquid output end of the liquid storage container 23 may be connected to the brush head, which is used to evenly coat the liquid raw material onto the disc screen 22.

[0068] Preferably, the rotating shaft 21 is located at the center of the disc screen 22.

[0069] Furthermore, such as Figure 3As shown, the jetting device 14 can be fixedly mounted above the disc screen 22 by a bracket or other means (the fixing device of the jetting device 14 is not shown in the figure). The jetting direction of the jetting device 14 is towards the disc screen 22. Preferably, the jetting direction of the jetting device 14 can be perpendicular to the disc screen 22.

[0070] Furthermore, the rotating shaft 21 rotates under the drive of a motor (not shown in the figure), which in turn drives the disc screen 22 to rotate. The liquid in the storage container 23 adheres to the disc screen 22, and the rotation of the disc screen 22 continuously carries the liquid contained in the storage container 23 to the nozzle of the jet device 14. Under the action of the high-speed airflow ejected by the jet device 14, the liquid adhering to the disc screen 22 is atomized by the jet.

[0071] Preferably, according to some embodiments of this application, the rotation speed of the disc screen 22 can be 1-1000 rpm, for example, 10 rpm, 50 rpm, 100 rpm, 500 rpm, 800 rpm, or 1000 rpm. If the rotation speed of the disc screen 22 is too slow, the liquid carried on the disc screen 22 will easily dry out; if the rotation speed of the disc screen 22 is too fast, too much liquid will be carried on the disc screen 22, which will easily form large droplets during spraying, affecting the spray quality. Therefore, adopting the rotation speed of the disc screen 22 of this application can, on the one hand, prevent the liquid on the disc screen from drying out; on the other hand, it is beneficial to obtain high-quality droplets.

[0072] Preferably, according to some embodiments of this application, the distance between the disc screen 22 and the nozzle of the jet device 14 can be 2 to 10 mm. For example, it can be 2 mm, 4 mm, 6 mm, 8 mm, or 10 mm. If the distance between the disc screen 22 and the jet device 14 is too small, the liquid can easily touch and contaminate the jet device 14. If the distance between the disc screen 22 and the jet device 14 is too large, the airflow dissipation is large, and the liquid cannot be fully sprayed and broken to form more uniform atomized droplets. Therefore, the distance between the disc screen 22 and the jet device 14 provided in this application is beneficial to the formation of more uniform atomized droplets, while avoiding contamination of the jet device 14 by the liquid.

[0073] It is understood that those skilled in the art can select the specific type of the rotating shaft 21, the disc screen 22, and the liquid storage container 23 according to actual needs.

[0074] Preferably, the material of the disc screen 22 may include at least one of polyester, nylon, copper, and stainless steel. The material of the liquid storage container 23 may include at least one of metal, ceramic, glass, and plastic. It is understood that the selection of the material of the liquid storage container 23 mainly depends on the type of liquid contained therein. For example, it is required that the material of the liquid storage container 23 will not be corroded by the liquid it contains.

[0075] Preferably, the mesh size of the disc screen 22 can be 50 to 3000 meshes, for example, 50, 100, 200, 500, 1000, 2000, or 3000 meshes. Within the mesh size range of the disc screen 22 provided in this application, the rotary spraying device has high spraying efficiency and produces droplets with small particle size and good uniformity. If the mesh size of the disc screen 22 is too small, the spraying efficiency will be low; if the mesh size of the disc screen 22 is too large, the air resistance of the disc screen 22 will increase, affecting the spraying quality.

[0076] Specifically, the type of liquid in the storage container 23 is not limited, and those skilled in the art can select it according to actual needs. For example, the liquid may include pure solvents, solutions, molten metals, etc. The solvents in pure solvents and solutions may include at least one of pure water, ethanol, n-propanol, isopropanol, n-butanol, tert-butanol, hexafluoroisopropanol, N-methylpyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide, dimethyl sulfoxide, acetone, liquid alkanes, and liquid olefins. The solutes in solutions may include various organic and inorganic substances soluble in the above solutions. The molten metals may include at least one of gold, silver, copper, aluminum, lead, tin, and zinc.

[0077] Furthermore, when the liquid is a solution or molten metal, and the target product is the powder particles of the corresponding raw material, the spraying device can be equipped with drying or cooling equipment and a collection device (not shown in the figure). Drying or cooling equipment and a collection device can be installed below the disc screen 22 (downstream of the jet direction of the jetting device 14) to dry or cool the droplets, and the powder particles of the corresponding raw material can be collected in the collection device. The specific type of this collection device can be selected by those skilled in the art according to actual needs. It is understood that when the raw material is molten metal, the liquid storage container 23 can have the function of heating the metal to a molten state.

[0078] A second aspect of the embodiments of this application provides a method of using the aforementioned rotary spray device (hereinafter sometimes referred to as the "method of use").

[0079] like Figure 4 As shown, the method of use includes an air supply step S100 and a spraying step S200.

[0080] In the gas supply step S100: the compressed gas supply device 11 and the pressure reducing valve 13 are turned on, so that the gas supply unit 100 ejects a high-speed gas flow.

[0081] Specifically, the compressed gas supply device 11 and the pressure reducing valve 13 are turned on. The gas in the compressed gas supply device 11 reaches the pressure reducing valve 13 through the pipeline 12. After the pressure and flow rate of the gas are regulated by the pressure reducing valve 13, the gas reaches the jetting device 14 through the pipeline 12 and is ejected from the jetting device 14 into the disc screen 22 in the form of a high-speed airflow.

[0082] In the spraying step S200: Driven by the rotating shaft 21, the liquid supply unit 200 delivers liquid to the nozzle of the jet device 14, where the high-speed airflow atomizes the liquid.

[0083] Specifically, the rotating shaft 21 rotates under the drive of the motor, which in turn drives the disc screen 22 to rotate. The disc screen 22 adheres to and carries the liquid in the liquid storage container 23 to the nozzle of the jet device 14. Under the action of the high-speed airflow ejected by the jet device 14, the liquid is atomized.

[0084] Furthermore, when the liquid is a solution or molten metal, and the target product is the powder particles of the corresponding raw material, a drying device or cooling device and a collection device can be set below the disc screen 22 (downstream of the jet direction of the jet device 14) to dry or cool the droplets and then collect the corresponding powder particles in the collection device.

[0085] A third aspect of the embodiments of this application provides an atomized droplet and powder particles.

[0086] The atomized droplets and powder particles are prepared using the aforementioned rotary spray device and its method of use. The atomized droplets and powder particles have a small and uniform particle size.

[0087] The following exemplary descriptions of possible specific embodiments of this application are for illustrative purposes only and should not be construed as limiting the application. All raw materials used in the following embodiments are commercially available or can be synthesized according to methods described herein or known to the art. For reaction conditions not listed, they are all conventional settings or selections in the art and are readily available to those skilled in the art.

[0088] First Implementation Method

[0089] This implementation method adopts, as follows: Figure 3 The rotating spray device shown in this embodiment:

[0090] (1) Turn on the compressed gas supply device 11 (air compressor) and pressure reducing valve 13. The gas in the compressed gas supply device 11 reaches the pressure reducing valve 13 through the pipeline 12. After the pressure and flow rate of the gas are regulated by the pressure reducing valve 13, it reaches the jet device 14 (air knife with a width W of 30mm) through the pipeline 12 and is sprayed from the jet device 14 to the disc screen 22 (stainless steel screen with a mesh count of 2000 mesh and a radius of 10cm) in the form of high-speed airflow (jet pressure of 0.6MPa). The distance between the nozzle of the jet device 14 and the disc screen is 2mm.

[0091] (2) The rotating shaft 21 rotates under the drive of the motor, driving the disc screen 22 (a stainless steel screen with a mesh size of 2000 mesh and a radius of 10cm) to rotate at a speed of 10 revolutions per minute. The disc screen 22 adheres to and carries the liquid (deionized water) in the liquid storage container 23 (acrylic material) to the nozzle of the jet device 14. Under the action of the high-speed airflow ejected by the jet device 14, the deionized water is atomized by jetting.

[0092] The volume distribution of the atomized droplets obtained in this embodiment is shown in the following table and Figure 5 As shown.

[0093] 1.0 0.36 3.0 1.19 5.0 1.88 10.0 13.72 30.0 88.11 32.0 91.69 40.0 98.84 45.0 99.88 50.0 100.00 80.0 100.00

[0094] The weighted average particle size of the atomized droplets obtained in this embodiment is 19.24 μm.

[0095] Second Implementation Method

[0096] This implementation method adopts, as follows: Figure 3 The rotating spray device shown in this embodiment:

[0097] (1) Turn on the compressed gas supply device 11 (high-pressure gas cylinder) and pressure reducing valve 13. The gas from the compressed gas supply device 11 reaches the pressure reducing valve 13 through the pipeline 12. After the pressure and flow rate of the gas are regulated by the pressure reducing valve 13, it reaches the jet device 14 (a long strip-shaped gas outlet pipe with a width W of 30mm) through the pipeline, and is sprayed from the jet device 14 to the disc screen 22 (a brass screen with a mesh count of 1000 mesh and a diameter of 15cm) in the form of high-speed airflow (jet pressure of 0.5MPa). The distance between the nozzle of the jet device 14 and the disc screen 22 is 2mm.

[0098] (2) The rotating shaft 21 rotates under the drive of the motor, driving the disc screen 22 (a brass screen with a mesh size of 1000 mesh and a diameter of 15cm) to rotate at a speed of 20 revolutions per minute. The disc screen 22 adheres to and carries the liquid (anhydrous ethanol) in the liquid storage container 23 (acrylic material) to the nozzle of the jet device 14. Under the action of the high-speed airflow ejected by the jet device 14, the anhydrous ethanol is atomized.

[0099] The volume distribution of the atomized droplets obtained in this embodiment is shown in the following table and Figure 6 As shown.

[0100] 1.0 0.37 3.0 1.12 5.0 1.57 10.0 11.30 30.0 77.11 32.0 80.83 40.0 90.83 45.0 94.35 50.0 96.63 80.0 100.00

[0101] The weighted average particle size of the atomized droplets obtained in this embodiment is 22.55 μm.

[0102] Third Implementation Method

[0103] This implementation method adopts, as follows: Figure 3 The rotating spray device shown in this embodiment:

[0104] (1) Add the metal tin block to the titanium tin storage container 23 with heating function, and heat it to 300°C to a molten state.

[0105] (2) Turn on the compressed gas supply device 11 (high-pressure gas cylinder) and pressure reducing valve 13. The gas in the compressed gas supply device 11 reaches the pressure reducing valve 13 through the pipeline 12. After the pressure and flow rate of the gas are regulated by the pressure reducing valve 13, it reaches the jet device 14 (a long strip-shaped gas outlet pipe with a width W of 30mm) through the pipeline 12, and is sprayed from the jet device 14 to the disc screen 22 (a stainless steel screen with a mesh count of 100 mesh and a diameter of 10cm) in the form of high-speed airflow (jet pressure of 1MPa). The distance between the nozzle of the jet device 14 and the disc screen is 2mm.

[0106] (3) The rotating shaft 21 rotates under the drive of the motor, driving the disc screen 22 (a stainless steel screen with a mesh size of 100 mesh and a diameter of 10 cm) to rotate at a speed of 30 revolutions per minute. The disc screen 22 adheres to and carries the molten metal (tin) in the storage container to the nozzle of the jet device 14. Under the action of the high-speed airflow ejected by the jet device, the molten metal (tin) is atomized by jetting.

[0107] (4) The atomized molten metal (tin) can be cooled and solidified by a cooling device (not shown in the figure) to form metal (tin) powder particles, which fall into the collection device.

[0108] It should be understood that the above-described embodiments and some aspects or features thereof can be appropriately combined.

[0109] The following is a brief description of some of the beneficial effects of the above-described embodiments of this application.

[0110] (i) The rotary spray device of this application has a simple structure, low manufacturing cost, high atomization efficiency, good working stability, and its structure is not prone to problems such as nozzle blockage.

[0111] (ii) The rotary spray device and its usage method of this application are easy to implement and have a wide range of applications. By changing the selection of related equipment and devices, the aforementioned rotary spray device and usage method can be applied to the atomization of various raw materials.

[0112] (iii) The atomized droplets and powder particles generated by the rotary spray device of this application have small and uniform particle size, which can meet the needs of various life and production application scenarios.

[0113] It should be understood that, in this application, when the number of parts or components is not specifically defined, the number can be one or more, where "multiple" refers to two or more. For cases where the number of parts or components shown in the drawings and / or described in the specification is, for example, two, three, four, etc., this specific number is generally exemplary and not restrictive, and can be understood as multiple, i.e., two or more; however, this does not mean that this application excludes the case of one.

[0114] It should be understood that the above embodiments are merely exemplary and are not intended to limit this application. Those skilled in the art can make various modifications and changes to the above embodiments under the teachings of this application without departing from the scope of this application.

Claims

1. A rotary spraying device, characterized in that, include: The gas supply unit (100) includes a compressed gas supply device (11), a pipeline (12), and a jet device (14). The compressed gas supply device (11) is connected to the jet device (14) through the pipeline (12). Liquid supply unit (200) includes a rotating shaft (21), a disc screen (22), and a liquid storage container (23). The disc screen (22) is connected to the rotating shaft (21) and rotates with the rotating shaft (21). The liquid storage container (23) is used to hold liquid. The liquid storage container (23) is provided with an opening. The liquid storage container (23) is located above the disc screen (22). The bottom of the liquid storage container (23) is attached to the disc screen (22). The opening of the liquid storage container (23) includes one or more slits or multiple holes for uniformly supplying the liquid in the liquid storage container (23) to the disc screen (22). The jetting device (14) is an air knife or a long strip-shaped air outlet pipe. The jetting device (14) is located above the disc screen (22). The jetting direction of the jetting device (14) is towards the disc screen (22). In the rotation direction of the disc screen (22), the jetting device (14) is located downstream of the liquid storage container (23).

2. The rotary spray device according to claim 1, characterized in that, The liquid supply unit (200) also includes a pressure reducing valve (13), which is disposed in the pipeline (12) and is used to regulate the pressure and / or flow rate of the gas in the pipeline (12).

3. The rotary spray device according to claim 1, characterized in that, The jetting direction of the jetting device (14) is perpendicular to the disc screen (22). The rotating shaft (21) is connected to the center of the disc screen (22).

4. The rotary spraying device according to any one of claims 1 to 3, characterized in that, The liquid is a solution or molten metal, and the target product is powder particles of the corresponding material. The rotary spray device also includes: Drying or cooling equipment for drying or cooling atomized droplets to obtain the corresponding powder particles; and A collection device for collecting the powder particles; The drying or cooling equipment is located downstream of the jetting direction of the jetting device (14). The liquid storage container (23) is provided with a heating element inside or outside, which is used to make the material in the liquid storage container (23) liquid.

5. The rotary spraying device according to any one of claims 1 to 3, characterized in that, The liquid storage container (23) includes an injection pump or an extruder, which can control the rate at which the liquid in the liquid storage container (23) is supplied to the disc screen (22).

6. The rotary spraying device according to any one of claims 1 to 3, characterized in that, The gauge pressure of the jet device (14) is 0.01~5MPa; The rotational speed of the shaft (21) is 1~1000 revolutions per minute; The distance between the disc screen (22) and the jet device (14) is 2~10mm; The mesh size of the disc screen (22) is 50~3000 mesh.

7. The rotary spraying device according to any one of claims 1 to 3, characterized in that, The liquid supply unit (200) also includes a brush head, the liquid output end of the liquid storage container (23) is connected to the brush head, the brush head contacts the disc screen (22) and is used to evenly apply the liquid to the disc screen (22).

8. A method of using a rotary spray device, characterized in that, The rotary spray device is the rotary spray device according to any one of claims 1 to 6, and the method of use includes: The compressed gas supply device (11) is turned on, and the gas in the compressed gas supply device (11) reaches the jet device (14) through the pipeline (12), and is ejected from the jet device (14) into the disc screen (22) in the form of a high-speed airflow; and The rotating shaft (21) rotates under the drive of the motor, causing the disc screen (22) to rotate with the rotating shaft (21). The liquid storage container (23) supplies the liquid to the disc screen (22), and the disc screen (22) carries the liquid to the nozzle of the jet device (14). Under the action of the high-speed airflow ejected by the jet device (14), the liquid is atomized by jetting.

9. An atomized droplet, characterized in that, It is prepared using the rotary spraying device according to any one of claims 1 to 7 or the method of using the rotary spraying device according to claim 8.

10. A powder particle, characterized in that, It is prepared using the rotary spraying device according to any one of claims 1 to 7 or the method of using the rotary spraying device according to claim 8.

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