Ultrafine powder ultrasonic atomization preparation device

Abstract

The utility model discloses a superfine powder ultrasonic atomization preparation device, which relates to the technical field of spherical powder production equipment and comprises a bin body, a material conveying pipe is mounted on a top plate of the bin body, and a first ultrasonic generator, a nozzle and a vacuum pump are laterally mounted on the material conveying pipe; a material collecting ring is arranged below the reaction cavity, and a temporary storage cavity is formed in the lower part of the inner wall of the material collecting ring; a partition door body is mounted below the temporary storage cavity; an extension ring is arranged below the partition door body, a separation cavity is formed in the lower portion of the inner wall of the extension ring, and a second ultrasonic generator is installed in the concave cavity. During ultrasonic atomization operation, the partition door body is closed, and the superfine powder falls into the temporary storage cavity; and after the ultrasonic atomization operation is completed, the separation door body is opened, the superfine powder falls into the separation cavity, and the second ultrasonic generator is used for sorting the superfine powder. According to the device, ultrasonic atomization and ultrasonic separation are integrated into one device, so that the area required during installation is reduced, meanwhile, the step of manually transferring superfine powder is omitted, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical powder production equipment, and particularly relates to an ultrafine powder ultrasonic atomization preparation device. Background Art

[0002] Fine metal powders, as an important type of industrial raw materials, are commonly used in processes such as additive manufacturing, thermal spraying, and metal injection molding.

[0003] Ultrasonic atomization is a process of using ultrasonic vibration energy and air flow impact kinetic energy to break a liquid stream to prepare metal powders. In traditional technologies, the diameter uniformity of the metal powders obtained by ultrasonic atomization is relatively low. Usually, additional separation and sorting equipment is used for screening. During the process, the transfer of the metal powders increases the operation steps, reduces the working efficiency, and at the same time, the two devices require a large installation space. Summary of the Invention

[0004] In order to overcome the problem of "traditional ultrasonic atomization equipment needs to be equipped with additional separation and sorting equipment, resulting in increased operation steps, reduced working efficiency, and at the same time, requiring a large installation space" in the above background art, the utility model provides an ultrafine powder ultrasonic atomization preparation device.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] An ultrafine powder ultrasonic atomization preparation device, including a silo body, wherein a reaction chamber is arranged inside the silo body; a feeding pipe for inputting a liquid metal stream is installed on the top plate of the silo body, and the bottom end of the feeding pipe is located at the top of the reaction chamber; a first ultrasonic generator, a nozzle, and a vacuum pump are laterally installed on the feeding pipe; an installation plate is fixedly installed on the upper part of the inner wall of the reaction chamber, and the first ultrasonic generator, the nozzle, and the vacuum pump are all arranged in an installation cavity formed by surrounding the installation plate and the inner wall of the silo body; an aggregate ring is arranged below the reaction chamber, the outer wall of the aggregate ring is adapted to and mutually attached to the inner wall of the silo body, the upper part of the inner wall of the aggregate ring is in an inverted conical shape, and the lower part is in a straight cylindrical shape, and a temporary storage cavity is formed in the lower part of the inner wall of the aggregate ring; a partition door body capable of being horizontally withdrawn is installed below the temporary storage cavity; an extension ring is arranged below the partition door body, the outer wall of the upper part of the extension ring is adapted to and mutually attached to the inner wall of the silo body, the upper part of the inner wall of the extension ring is in an inverted conical shape, and the lower part is in a straight cylindrical shape, and a separation cavity is formed in the lower part of the inner wall of the extension ring, and the outer wall of the lower part of the extension ring is recessed inward to form a recess cavity, and the height of the recess cavity is equal to the height of the separation cavity; a second ultrasonic generator is installed in the recess cavity; the diameter of the reaction chamber > the diameter of the temporary storage cavity > the diameter of the separation cavity.

[0007] As a further optimization solution of the present utility model, a plurality of nozzles are provided and are arranged in an equiangular and equiradius circumferential array with the material conveying pipe as the center.

[0008] As a further optimization solution of the present utility model, a plurality of first ultrasonic generators are provided and are arranged in an equiangular and equiradius circumferential array with the material conveying pipe as the center.

[0009] As a further optimization solution of the present utility model, the mounting plate is spherical.

[0010] As a further optimization solution of the present utility model, a first mounting through hole is formed in the mounting plate, the first mounting through hole is located at the waist of the mounting plate, and the nozzle is placed in the first mounting through hole.

[0011] As a further optimization solution of the present utility model, a second mounting through hole is formed in the mounting plate, the second mounting through hole is located at the bottom of the mounting plate, and the suction pipe of the vacuum pump is placed in the second mounting through hole.

[0012] As a further optimization solution of the present utility model, a horizontally arranged support plate is provided on the outer wall of the bin body; the side wall of the support plate is fixedly connected to the side wall of the bin body by bolts; the upper surface of the support plate is fixedly connected to the side wall of the bin body by triangular reinforcing ribs, a linear actuator is installed on the lower surface of the support plate, and the output shaft of the linear actuator is connected to the partition door body.

[0013] As a further optimization solution of the present utility model, the second ultrasonic generator is installed on the side wall of the concave cavity close to the separation cavity.

[0014] As a further optimization solution of the present utility model, a plurality of second ultrasonic generators are provided and are longitudinally arranged at equal intervals.

[0015] As a further optimization solution of the present utility model, a discharge port is formed in the bottom plate of the bin body, the discharge port is located directly below the separation cavity and is communicated therewith, and an openable and closable discharge door body is installed at the position of the discharge port.

[0016] In summary, the beneficial effects of the present utility model are as follows:

[0017] The utility model has a simple structure, reliable functions and high integration. The bin body is in the shape of a fixed-diameter cylinder with a top and a bottom, which is used to perform sealing and structural support functions. A feeding pipe for inputting a liquid metal material flow is installed on the top plate of the bin body, and a first ultrasonic generator, a nozzle and a vacuum pump are laterally installed on the feeding pipe. During ultrasonic atomization operation, the partition door body is closed, and the ultrafine powder falls into the temporary storage cavity. After the ultrasonic atomization operation is completed, the partition door body is opened, and the ultrafine powder falls into the separation cavity. The second ultrasonic generator is used to realize the sorting of the ultrafine powder. The utility model integrates ultrasonic atomization and ultrasonic sorting into one device, reduces the area required for installation, and at the same time eliminates the step of manually transporting the ultrafine powder, improving work efficiency. Description of the Drawings

[0018] The following further describes the present application with reference to the drawings:

[0019] Figure 1 is the overall structural schematic diagram of the utility model;

[0020] Figure 2 is the installation position and structural schematic diagram of the linear actuator;

[0021] Figure 3 is the cross-sectional top view structural schematic diagram of the mounting plate;

[0022] Figure 4 is the vertical sectional structural schematic diagram of the separation cavity;

[0023] Figure 5 is the cross-sectional top view structural schematic diagram of the bottom support plate.

[0024] Description of the Reference Numerals in the Drawings:

[0025] In the figure,

[0026] 1. Bin body; 11. Reaction cavity; 12. Temporary storage cavity; 13. Partition door body; 131. Support plate; 132. Linear actuator; 14. Mounting plate; 15. Installation cavity; 16. Separation cavity;

[0027] 2. Feeding pipe;

[0028] 3. First ultrasonic generator;

[0029] 4. Nozzle;

[0030] 5. Aggregate ring;

[0031] 6. Extension ring; 61. Concave cavity; 62. Bottom support plate; 63. Wire hole;

[0032] 7. Second ultrasonic generator;

[0033] 8. Discharge door body;

[0034] 9. Vacuum pump. Detailed implementation mode

[0035] Based on the above structural characteristics of the present application, the implementation mode of the present application is further described as follows:

[0036] Referring to Figure 1 , this embodiment provides an ultrasonic atomization preparation device for ultrafine powder, including a storage body 1, and a reaction chamber 11 is arranged inside the storage body 1. The storage body 1 is in the shape of a straight circular cylinder with a top and a bottom, and is used to perform sealing and structural support functions. A feeding pipe 2 for inputting a liquid metal material flow is installed on the top plate of the storage body 1, and the bottom end of the feeding pipe 2 is located at the top of the reaction chamber 11. A heating furnace is fixedly connected to the top surface of the storage body 1 by bolts. The heating furnace is connected and communicated with the feeding pipe 2. The heating furnace heats the metal raw material to a liquid state and then presses it into the reaction chamber 11 through the feeding pipe 2.

[0037] Referring to Figures 1 to 3 , a first ultrasonic generator 3, a nozzle 4 and a vacuum pump 9 are laterally installed on the feeding pipe 2. The first ultrasonic generator 3 is used to emit ultrasonic waves to the liquid material flow, and the nozzle 4 is used to blow high-pressure gas to the liquid material flow. The liquid material flow is impacted by ultrasonic waves and air flow during the dropping process to form a mist, and then is cooled to obtain ultrafine metal powder. The nozzle 4 is sequentially connected and communicated with an external air pump and a gas cylinder. The gas cylinder stores inert gas (such as argon, nitrogen, etc.); the air pump is used to spray the positive-pressure inert gas into the reaction chamber 11 through the nozzle 4.

[0038] Referring to Figures 1 to 3 , an installation plate 14 (for example, fixedly connected by bolts) is fixedly installed on the upper part of the inner wall of the reaction chamber 11. The first ultrasonic generator 3, the nozzle 4 and the vacuum pump 9 are all arranged in an installation cavity 15 formed by surrounding the installation plate 14 and the inner wall of the storage body 1. One end of the first ultrasonic generator 3 is fixedly connected to the installation plate 14 by bolts, and the other end is fixedly connected to the inner wall of the storage body 1 by bolts; one end of the nozzle 4 is fixedly connected to the installation plate 14 by bolts, and the other end is fixedly connected to the inner wall of the storage body 1 by bolts; the side wall of the vacuum pump 9 is fixedly connected to the inner wall of the storage body 1 by bolts.

[0039] Referring to Figures 1 to 2, a collecting ring 5 is provided below the reaction chamber 11. The outer wall of the collecting ring 5 is adapted to and in close contact with the inner wall of the bin body 1, and the collecting ring 5 and the inner wall of the bin body 1 are fixedly connected by bolts. The collecting ring 5 is located directly below the feeding pipe 2. The upper part of the inner wall of the collecting ring 5 is in an inverted conical shape (for collecting materials), and the lower part is in a straight cylindrical shape. A temporary storage chamber 12 is formed in the lower part of the inner wall of the collecting ring 5; a separating door body 13 that can be horizontally withdrawn is installed below the temporary storage chamber 12. During use, the separating door body 13 is used to block the temporary storage chamber 12 to make the reaction chamber 11 and the temporary storage chamber 12 in a sealed state. Then, the vacuum pump 9 is started to evacuate the air, and then the liquid metal material flow is pressed in and the first ultrasonic generator 3 and the air pump are started synchronously to atomize the liquid metal material flow.

[0040] Refer to Figures 1 to 2 , a extending ring 6 is provided below the separating door body 13. The outer wall of the upper part of the extending ring 6 is adapted to and in close contact with the inner wall of the bin body 1 and is fixedly connected by bolts. The upper part of the inner wall of the extending ring 6 is in an inverted conical shape (for collecting materials), and the lower part is in a straight cylindrical shape. The space surrounded by the lower part of the inner wall of the extending ring 6 forms a separation chamber 16. The outer wall of the lower part of the extending ring 6 is recessed inward to form a recessed chamber 61. The height of the recessed chamber 61 is equal to the height of the separation chamber 16, and the bottom end of the recessed chamber 61 is flush with the bottom end of the separation chamber 16; a second ultrasonic generator 7 is installed in the recessed chamber 61.

[0041] Refer to Figure 2 , the diameter of the reaction chamber 11 > the diameter of the temporary storage chamber 12 > the diameter of the separation chamber 16, which is used for the collection and sorting of ultrafine powders. Placing an equal amount of ultrafine powders in the separation chamber 16 has a greater stacking height than placing them in the storage chamber, thus facilitating ultrasonic sorting.

[0042] Refer to Figures 1 to 3 , a plurality of nozzles 4 are provided and are arranged in an equiangular and equiradius circumferential array centered on the feeding pipe 2. A plurality of first ultrasonic generators 3 are provided and are arranged in an equiangular and equiradius circumferential array centered on the feeding pipe 2. At least two nozzles 4 are provided; the number of the first ultrasonic generators 3 is equal to that of the nozzles 4 and they are respectively located directly below the nozzles 4, so that the ultrasonic impact energy and the air flow impact energy act on the liquid metal material flow in a more concentrated form, improving the effect of crushing and atomization.

[0043] Refer to Figure 2 And Figure 3, the mounting plate 14 is spherical, so as to adapt to the installation at the top corner position of the reaction chamber 11. A first mounting through hole is formed in the mounting plate 14, and the first mounting through hole is located at the waist of the mounting plate 14. The nozzle 4 is placed in the first mounting through hole, and the outer wall of the nozzle 4 is hermetically and fixedly connected to the inner wall of the first mounting through hole. A second mounting through hole is formed in the mounting plate 14, and the second mounting through hole is located at the bottom of the mounting plate 14. The suction pipe of the vacuum pump 9 is placed in the second mounting through hole, and the outer wall of the suction pipe is hermetically and fixedly connected to the inner wall of the second mounting through hole.

[0044] Referring to Figure 2 , a horizontally arranged support plate 131 is provided on the outer wall of the bin body 1; the side wall of the support plate 131 is fixedly connected to the side wall of the bin body 1 by bolts; the upper surface of the support plate 131 is fixedly connected to the side wall of the bin body 1 by triangular reinforcing ribs (such as welding or bolt connection). A horizontally arranged linear actuator 132 is installed on the lower surface of the support plate 131 (such as by bolts). The output shaft of the linear actuator 132 is connected to and parallel to the partition door body 13, so that the linear actuator 132 can drive the partition door body 13 to reciprocate horizontally, thereby realizing the opening and closing of the partition door body 13.

[0045] Referring to Figure 2 , Figure 4 And Figure 5 , the second ultrasonic generator 7 is installed on the side wall of the recessed cavity 61 close to the separation cavity 16 by bolts. There are several second ultrasonic generators 7, and several second ultrasonic generators 7 are longitudinally arranged at equal intervals upward starting from the bottom of the recessed cavity 61 to ensure that the ultrafine powder accumulated in the separation cavity 16 receives uniform ultrasonic energy and avoids blind spots, so as to improve the sorting effect. After the ultrafine powder accumulated in the separation cavity 16 receives the ultrasonic energy, it is stratified according to the particle size: large particles float up and small particles sink, realizing sorting.

[0046] A discharge port is formed in the bottom plate of the bin body 1, and the discharge port is located directly below the separation cavity 16 and is communicated with each other. An openable and closable discharge door body 8 is installed at the outer wall position of the discharge port. One side of the discharge door body 8 is hinged to the side wall of the discharge port / the bottom surface of the bin body 1, and the other side of the discharge door body 8 is detachably connected to the bin body 1 by a spring buckle. After the sorting is completed, the user opens the discharge door body 8, and the ultrafine powder in the small particle layer flows out first. At this time, the user uses a container to receive and collect it; the ultrafine powder in the large particle layer flows out later. At this time, the user replaces the container to receive and collect it.

[0047] Referring to Figure 4 And Figure 5, since the diameter of the upper part of the extension ring 6 is larger than that of the lower part, and the upper part of the extension ring 6 is fixedly connected to the bin body 1 by bolts, the stability of the lower part of the extension ring 6 is relatively low. Therefore, a bottom support plate 62 is sleeved on the lower part of the extension ring 6. The bottom support plate 62 is a straight plate structure in a C shape; the outer edge of the bottom support plate 62 is adapted to the inner wall of the concave cavity 61, and the second ultrasonic generator 7 is placed in the notch of the bottom support plate 62.

[0048] Referring to Figure 2 , a wire hole 63 is provided in the upper part of the extension ring 6, and a water injection pipeline is arranged in the wire hole 63. By injecting water into the separation cavity 16 through the water injection pipeline, the fluidity of the ultrafine powder can be increased, and the efficiency of ultrasonic sorting can be improved. A drain valve is adaptively installed on the discharge door body 8, and a filter screen is sleeved on the upper end of the drain valve; after the ultrasonic sorting is completed, the user drains the water, and the adhesiveness of the ultrafine powder increases and the fluidity decreases. Therefore, when the ultrafine powder is taken out, the problem of mixed flow between the layers of the ultrafine powder can be reduced.

[0049] Use steps: ① Close the partition door body 13; ② Press the liquid metal material through the feeding pipe 2 into the reaction cavity 11, and at the same time start the first ultrasonic generator 3 and the air pump to perform ultrasonic atomization operation to form ultrafine powder; ③ The ultrafine powder drops and accumulates in the temporary storage cavity 12; ④ Open the partition door body 13, and the ultrafine powder drops and accumulates in the separation cavity 16; ⑤ Start the second ultrasonic generator 7 to perform sorting of the ultrafine powder; ⑥ Open the discharge door body 8 and take out the ultrafine powder of different sizes in sequence.

[0050] The linear actuator 132 is an electric push rod, a pneumatic push rod, a hydraulic push rod or a combination thereof (such as an electro-hydraulic push rod).

[0051] The utility model further includes an electric cabinet, which is fixedly installed on the upper surface of the support plate 131 by bolts; the first ultrasonic generator 3, the air pump, the vacuum pump 9, the second ultrasonic generator 7 and the linear actuator 132 are respectively connected to the electric cabinet through wires and signal lines; the electric cabinet is respectively connected to an external power supply and an external computer through wires and signal lines, and the computer controls the start and stop of the first ultrasonic generator 3, the air pump, the vacuum pump 9, the second ultrasonic generator 7 and the linear actuator 132 in the utility model through the electric cabinet.

[0052] The structure of the utility model is simple, the function is reliable, and the integration degree is high. The bin body 1 is in the shape of a fixed-diameter cylinder with a top and a bottom, which is used to play the functions of sealing and structural support. A feeding pipe 2 for inputting a liquid metal material flow is installed on the top plate of the bin body 1, and a first ultrasonic generator 3, a nozzle 4 and a vacuum pump 9 are installed laterally on the feeding pipe 2. During the ultrasonic atomization operation, the partition door body 13 is closed, and the ultrafine powder falls into the temporary storage cavity 12. After the ultrasonic atomization operation is completed, the partition door body 13 is opened, and the ultrafine powder falls into the separation cavity 16. The second ultrasonic generator 7 is used to realize the sorting of the ultrafine powder. The utility model integrates ultrasonic atomization and ultrasonic sorting into one device, reduces the area required during installation, and at the same time eliminates the step of manually transporting the ultrafine powder, improving the work efficiency.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0054] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or a connection through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0055] In summary, for those skilled in the art, based on the guidance of the present utility model, without departing from the principle and spirit of the present utility model, the changes, modifications, substitutions, and deformations made to the present utility model still fall within the protection scope of the present utility model.

Claims

1. An ultrafine powder ultrasonic atomization preparation device, characterized in that: It comprises a warehouse body (1), wherein a reaction chamber (11) is provided in the warehouse body (1); A feed pipe (2) for inputting a liquid metal flow is installed on the top plate of the warehouse body (1), and the bottom end of the feed pipe (2) is located at the top of the reaction chamber (11); The feed pipe (2) is laterally mounted with a first ultrasonic generator (3), a nozzle (4) and a vacuum pump (9); A mounting plate (14) is fixedly mounted on the upper portion of the inner wall of the reaction chamber (11); the first ultrasonic generator (3), the nozzle (4) and the vacuum pump (9) are all arranged in a mounting chamber (15) formed by the mounting plate (14) and the inner wall of the chamber (1); A material collecting ring (5) is provided below the reaction chamber (11); the outer wall of the material collecting ring (5) is adapted to and fits the inner wall of the bin body (1); the upper portion of the inner wall of the material collecting ring (5) is in the shape of an inverted cone, and the lower portion is in the shape of a straight cylinder; the lower portion of the inner wall of the material collecting ring (5) forms a temporary storage chamber (12); a partition door (13) that can be laterally withdrawn is installed below the temporary storage chamber (12); An extension ring (6) is provided below the partition door body (13); the outer wall of the upper portion of the extension ring (6) is adapted to and fits with the inner wall of the bin body (1); the upper portion of the inner wall of the extension ring (6) is in the shape of an inverted cone, and the lower portion is in the shape of a straight cylinder; the lower portion of the inner wall of the extension ring (6) forms a separation chamber (16); the outer wall of the lower portion of the extension ring (6) is recessed inward to form a recessed chamber (61); the height of the recessed chamber (61) is equal to the height of the separation chamber (16); a second ultrasonic generator (7) is installed in the recessed chamber (61); The diameter of the reaction chamber (11)>the diameter of the temporary storage chamber (12)>the diameter of the separation chamber (16).

2. The ultrafine powder ultrasonic atomization preparation device according to claim 1, characterized in that: A plurality of nozzles (4) are provided and are arranged in a circular array with equal angles and radii with the material delivery pipe (2) as the center.

3. The ultrafine powder ultrasonic atomization preparation device according to claim 2, characterized in that: A plurality of the first ultrasonic generators (3) are arranged in a circular array with equal angles and radii, with the feed conveying pipe (2) as the center.

4. The ultrafine powder ultrasonic atomization preparation device according to claim 3, characterized in that: The mounting plate (14) is spherical.

5. The ultrafine powder ultrasonic atomization preparation device according to claim 4, characterized in that: The mounting plate (14) is provided with a first mounting through hole, the first mounting through hole is located at the waist of the mounting plate (14), and the nozzle (4) is located in the first mounting through hole.

6. The ultrafine powder ultrasonic atomization preparation device according to claim 5, characterized in that: A second mounting through hole is provided on the mounting plate (14), the second mounting through hole is located at the bottom of the mounting plate (14), and the exhaust pipe of the vacuum pump (9) is located in the second mounting through hole.

7. The ultrafine powder ultrasonic atomization preparation device according to claim 6, characterized in that: The outer wall of the warehouse body (1) is provided with a horizontal support plate (131); the side wall of the support plate (131) is fixedly connected to the side wall of the warehouse body (1) by means of bolts; the upper surface of the support plate (131) is fixedly connected to the side wall of the warehouse body (1) by means of triangular reinforcing ribs; a linear drive (132) is installed on the lower surface of the support plate (131); and the output shaft of the linear drive (132) is connected to the partition door body (13).

8. The ultrafine powder ultrasonic atomization preparation device according to claim 7, characterized in that: The second ultrasonic generator (7) is mounted on a side wall of the recessed cavity (61) close to the separation cavity (16).

9. The ultrafine powder ultrasonic atomization preparation device according to claim 8, characterized in that: A plurality of the second ultrasonic generators (7) are provided and are arranged at equal intervals in the longitudinal direction.

10. The ultrafine powder ultrasonic atomization preparation device according to claim 9, characterized in that: A discharge port is provided on the bottom plate of the bin body (1), the discharge port is located directly below the separation chamber (16) and is interconnected, and an openable and closable discharge door (8) is installed at the discharge port.

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