Metal powder preparation device

Abstract

The utility model discloses a metal powder preparation device which comprises powder manufacturing equipment and a powder collecting tank, a feeding port in the top of the powder collecting tank is in butt joint with a powder outlet in the bottom of the powder manufacturing equipment, a plurality of butterfly valves which are distributed up and down at intervals are arranged on the powder collecting tank, and when the butterfly valves are closed, the powder outlet of the powder collecting tank is closed. Valve plates of the butterfly valves divide an inner cavity of the powder collecting tank into a plurality of powder storage units which are independent up and down. The device can be used for high-throughput powder preparation experiments, powder characteristics of multiple groups of different processes can be obtained through one experiment, and the device has important significance in researching the influence of different process parameters on the powder preparation characteristics.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal powder preparation, and in particular relates to a metal powder preparation device. Background Art

[0002] At present, the mainstream metal powder preparation method on the market is mainly atomization, including gas atomization, water atomization, plasma rotating electrode atomization, etc., that is, using high-pressure fluid or other special methods such as rotating centrifugal force to crush the molten metal into fine droplets to obtain powder. However, gas atomization and water atomization powder making equipment need to melt the metal material into alloy liquid and then prepare powder through inert gas or liquid impact; plasma rotating electrode atomization powder making method uses plasma arc current and high-speed rotating electric rod to throw out droplets to prepare powder under argon atmosphere. After a single powder making, it takes more than 3 hours to wait for the powder to cool. The above powder making methods have high experimental costs and long experimental processes, and a single experiment can only obtain the powder characteristics under one process parameter. Otherwise, different process powders are mixed, and it is impossible to explore the influence of process parameters on powder characteristics. It can be seen that traditional powder preparation test methods are difficult to systematically study the influence of preparation process parameters on powder characteristics. Summary of the invention

[0003] The main purpose of the utility model is to provide a metal powder preparation device, which is capable of conducting high-throughput experiments. Through one experiment, the powder characteristics of multiple groups under different processes can be obtained, which is of great significance for exploring the influence of different process parameters on powder making characteristics.

[0004] To this end, the metal powder preparation device provided by the utility model includes a powder making device and a powder collecting tank. The feed inlet at the top of the powder collecting tank is connected to the powder outlet at the bottom of the powder making device. The powder collecting tank is provided with a plurality of butterfly valves distributed at intervals up and down. When the plurality of butterfly valves are closed, the valve plates of the plurality of butterfly valves divide the inner cavity of the powder collecting tank into a plurality of independent powder storage units up and down.

[0005] Specifically, it also includes a PLC control unit for controlling the switch of the butterfly valve.

[0006] Specifically, the powder making equipment adopts plasma rotating electrode atomization powder making equipment.

[0007] Specifically, the plasma rotating electrode atomization powder making equipment includes an atomization chamber and a driving assembly. A feed port is provided on one side of the atomization chamber. The driving assembly is used to drive the electrode rod material to pass through the feed port along its axial direction to reach the atomization chamber and rotate around the axis of the electrode rod material. A plasma gun is also provided in the atomization chamber facing the electrode rod material, and the powder outlet is provided at the bottom of the atomization chamber.

[0008] Specifically, the driving assembly includes a base, a driving motor, a coupling and a pushing cylinder. The driving motor is slidably mounted on the base via a slide rail. The motor shaft of the driving motor is connected to the electrode rod material via a coupling. The pushing cylinder is fixedly arranged on the base to push the driving motor to move along the slide rail to realize the feeding of the electrode rod material.

[0009] Compared with the prior art, the utility model has the following beneficial effects: by adding multiple butterfly valves to the powder collection tank, the butterfly valves are used to separate the powder collection tank into multiple separate powder storage units, and powders prepared by different processes are stored in different powder storage units. The powder characteristics of multiple groups under different processes can be obtained through one experiment, which is of great significance for exploring the influence of different process parameters on powder making characteristics.

[0010] The entire device can realize high-throughput experimental preparation of powder. The experimental research on metal powder preparation has low cost and shorter cycle. Multiple sets of experimental data can be obtained in one experiment, which is conducive to reducing the cost of optimizing the powder preparation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the structure of a metal powder preparation device provided in an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of a powder collection tank provided by an embodiment of the utility model;

[0014] Among them: 1. Powder making equipment; 2. Powder collection tank; 3. Butterfly valve; 4. Valve plate; 5. Powder storage unit; 6. PLC control unit; 7. Atomization chamber; 8. Drive assembly; 9. Electrode rod material; 10. Plasma gun; 11. Base; 12. Drive motor; 13. Coupling; 14. Slide rail. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] See also Figure 1 and Figure 2 A metal powder preparation device includes a powder making device 1 and a powder collecting tank 2. The feed inlet at the top of the powder collecting tank 2 is connected to the powder outlet at the bottom of the powder making device 1. The powder collecting tank 2 is provided with a plurality of butterfly valves 3 distributed at intervals up and down. When the plurality of butterfly valves 3 are closed, the valve plates 4 of the plurality of butterfly valves 3 divide the inner cavity of the powder collecting tank 2 into a plurality of independent powder storage units 5 up and down.

[0019] When preparing powder using the above-mentioned metal powder preparation device, the powder collecting tank 2 is connected to the powder outlet of the powder making equipment 1, wherein the connection method between the powder making equipment 1 and the powder collecting tank 2 can adopt conventional connection methods such as threaded connection or flange assembly, and then all butterfly valves 3 are opened. After setting the powder making process parameters, the powder making equipment 1 is started to make powder. After reaching the set powder making amount or powder making time, the powder making equipment 1 stops feeding, changes the powder making process parameters, and closes the bottom butterfly valve 3, and then continues to feed and prepare powder. Repeat the above steps to obtain powders under different process parameters without interrupting the experiment.

[0020] In this embodiment, a plurality of butterfly valves 3 are added to the powder collecting tank 2, and the butterfly valves 3 are used to separate the powder collecting tank 2 into a plurality of separate powder storage units 5. Powders prepared by different processes are stored in different powder storage units 5. The powder characteristics of multiple groups under different processes can be obtained through one experiment. The entire device can realize high-throughput experimental preparation of powders. The experimental research on metal powder preparation has a lower cost and a shorter cycle. Multiple groups of experimental data can be obtained in one experiment, which is conducive to reducing the cost of optimizing the powder preparation process.

[0021] Specifically, in the actual design, a PLC control unit 6 is also included to control the opening and closing of the butterfly valve 3. The butterfly valve 3 is automatically opened and closed by the PLC control unit 6, and the automation rate is high. Of course, the butterfly valve 3 can also be opened and closed manually.

[0022] See also Figure 1 In some embodiments, the powder making equipment 1 is a plasma rotating electrode atomizing powder making equipment, which includes an atomizing chamber 7 and a driving assembly 8. A feed port is provided on one side of the atomizing chamber 7. The driving assembly 8 is used to drive the electrode rod 9 to pass through the feed port along its axial direction to reach the atomizing chamber 7 and rotate around the axis of the electrode rod 9. A plasma gun 10 facing the electrode rod 9 is also provided in the atomizing chamber 7, and the powder outlet is arranged at the bottom of the atomizing chamber 7. As for the other structures of the plasma rotating electrode atomizing powder making equipment, they are all prior art and will not be repeated here. Of course, the powder making equipment 1 can also be a metal powder preparation equipment such as gas atomization and water atomization.

[0023] The working principle of the above-mentioned plasma rotating electrode atomization powder making equipment 1 is: the driving component 8 drives the electrode rod 9 to extend into the atomization chamber 7, and then drives it to rotate at high speed. The plasma arc of the plasma gun 10 acts on the end face of the electrode rod 9. The end face of the high-speed rotating rod is melted, broken, and condensed into powder by the high-temperature plasma arc, and finally flows from the powder outlet to the powder collection tank 2 for storage.

[0024] See also Figure 1 Specifically, the driving assembly 8 includes a base 11, a driving motor 12, a coupling 13 and a pushing cylinder (not shown in the figure). The driving motor 12 is slidably installed on the base 11 through a slide rail 14. The motor shaft of the driving motor 12 is connected to the electrode rod 9 through the coupling 13. The pushing cylinder is fixed on the base 11 and is used to push the driving motor 12 to move along the slide rail 14 to realize the feeding of the electrode rod 9.

[0025] In this embodiment, the motor shaft of the driving motor 12 is connected to the electrode bar 9 through the coupling 13, and then the power is transmitted to the electrode bar 9, driving the electrode bar 9 to rotate at a high speed, and the pushing cylinder drives the driving motor 12 to slide horizontally along the slide rail 14 to realize the feeding of the electrode bar 9. Among them, the electrode bar 9 and the coupling 13 can be directly connected by threads.

[0026] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the protection scope of the invention.

[0027] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0028] In addition, the terms used in any technical solution disclosed in the above utility model to indicate positional relationship or shape include the state or shape that is similar, similar or close to it unless otherwise stated. Any component provided by the utility model can be assembled from multiple separate components, or it can be a separate component manufactured by an integrated molding process.

[0029] The above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A metal powder preparation device, comprising a powder making device (1) and a powder collecting tank (2), wherein a feed inlet at the top of the powder collecting tank (2) is connected to a powder outlet at the bottom of the powder making device (1), characterized in that: The powder collection tank (2) is provided with a plurality of butterfly valves (3) spaced apart from each other in an upper and lower direction. When the plurality of butterfly valves (3) are closed, the valve plates (4) of the plurality of butterfly valves (3) divide the inner cavity of the powder collection tank (2) into a plurality of independent powder storage units (5) in an upper and lower direction.

2. The metal powder preparation device according to claim 1, characterized in that: It also includes a PLC control unit (6) for controlling the opening and closing of the butterfly valve (3).

3. The metal powder preparation device according to claim 1 or 2, characterized in that: The powder making equipment (1) adopts plasma rotating electrode atomization powder making equipment.

4. The metal powder preparation device according to claim 3, characterized in that: The powder making equipment comprises an atomizing chamber (7) and a driving assembly (8), wherein a feed port is provided on one side of the atomizing chamber (7), and the driving assembly (8) is used to drive an electrode rod (9) to pass through the feed port along its axial direction to reach the atomizing chamber (7) and to rotate around the axis of the electrode rod (9), and the atomizing chamber (7) is also provided with a plasma gun (10) facing the electrode rod (9), and the bottom of the atomizing chamber (7) is provided with the powder outlet.

5. The metal powder preparation device according to claim 4, characterized in that: The driving assembly (8) comprises a base (11), a driving motor (12), a coupling (13) and a pushing cylinder. The driving motor (12) is slidably mounted on the base (11) via a slide rail (14). The motor shaft of the driving motor (12) is connected to the electrode bar (9) via the coupling (13). The pushing cylinder is fixedly arranged on the base (11) and is used to push the driving motor (12) to move along the slide rail (14) to realize the feeding of the electrode bar (9).

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