Plasma rotating electrode atomization powdering equipment

Abstract

The utility model discloses plasma rotating electrode atomization powder manufacturing equipment which aims at effectively improving the cooling effect of the side wall of an atomization chamber. Therefore, the plasma rotating electrode atomization powder manufacturing equipment comprises an atomization chamber, the end portion and the side portion of the atomization chamber are respectively provided with a water-cooling interlayer, a plurality of heat transfer partition plates are arranged in each water-cooling interlayer, the water-cooling interlayer is divided into a plurality of cooling channels by the heat transfer partition plates, and the cooling channels are communicated with the water-cooling interlayer. The cooling channels are connected end to end to form a circulating flow channel, and a circulating water inlet and a circulating water outlet which are communicated with the two ends of the circulating flow channel are formed in the atomizing chamber.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder making, and in particular relates to plasma rotating electrode atomization powder making equipment. Background Art

[0002] Plasma rotating electrode atomizing powder making equipment is an important equipment for raw material processing in the powder metallurgy industry. Its working principle is to rotate the metal rod at high speed, melt the rod through the high current arc generated by the plasma gun, and throw the molten metal out in the form of small liquid droplets during the rotation process and solidify into metal powder.

[0003] In order to effectively prevent powder particles from sticking to the wall, a water-cooling interlayer is usually provided in the wall of the atomization chamber, and heat dissipation is achieved by filling the water-cooling interlayer with circulating cooling water. The above cooling method realizes heat exchange through the inner wall surface of the water-cooling interlayer, and the heat exchange area is small, so the cooling effect needs to be improved. Summary of the invention

[0004] The main purpose of the utility model is to provide a plasma rotating electrode atomization powder making device, aiming to effectively improve the cooling effect of the side wall of the atomization chamber.

[0005] To this end, the utility model provides a plasma rotating electrode atomization powder making device, comprising an atomization chamber, wherein the ends and sides of the atomization chamber are provided with water-cooling interlayers, each of the water-cooling interlayers is provided with a plurality of heat transfer baffles, and the plurality of heat transfer baffles divide the water-cooling interlayer into a plurality of cooling channels, and the plurality of cooling channels are connected end to end to form a circulation flow channel, and the atomization chamber is provided with a circulating water inlet and a circulating water outlet connected to the two ends of the circulation flow channel.

[0006] Specifically, a concave cavity is formed at the end and side of the atomization chamber, and an end cover is detachably connected to the top of the concave cavity. The concave cavity and the end cover form the water-cooling interlayer. The inner ends of several heat transfer baffles are in close contact with the inner wall surface of the water-cooling interlayer, and the outer ends are fixedly connected to the end cover.

[0007] Specifically, the heat transfer baffle and the end cover are integrally formed.

[0008] Specifically, a feed port is provided on one side of the atomization chamber, and one end of the electrode rod is inserted into the atomization chamber through the feed port. A plasma gun facing the electrode rod is also provided in the atomization chamber. The other end of the electrode rod is connected to a driving assembly, and the driving assembly is used to drive the electrode rod to rotate at high speed.

[0009] 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.

[0010] Specifically, two groups of the slide rails are arranged side by side on the base, the cross section of each group of the slide rails is T-shaped, and the bottom of the base of the drive motor is provided with a T-shaped slide groove adapted to the slide rails.

[0011] Specifically, the atomization chamber is an inert gas protection chamber or a vacuum chamber.

[0012] Specifically, a dynamic sealing bearing is provided at the feed inlet of the atomization chamber, and the electrode rod material passes through the dynamic sealing bearing.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by arranging a heat transfer baffle in the water-cooling interlayer, the water-cooling interlayer is divided into a plurality of cooling channels which are connected end to end in sequence by using the heat transfer baffle, while ensuring that the cooling water can circulate and exchange heat in the water-cooling interlayer, the heat exchange area can be effectively increased, thereby improving the cooling effect of the atomization chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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.

[0015] Figure 1 It is a cross-sectional view of a flour milling device provided by an embodiment of the utility model;

[0016] Figure 2 It is a side view of the flour making equipment provided by the embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of one of the end covers in the utility model;

[0018] Among them: 1. Atomization chamber; 2. Water-cooled interlayer; 3. Heat transfer baffle; 4. Cooling channel; 5. Circulating flow channel; 6. Circulating water inlet; 7. Circulating water outlet; 8. End cover; 9. Electrode rod material; 10. Plasma gun; 11. Base; 12. Drive motor; 13. Coupling; 14. Slide rail; 15. Dynamic seal bearing. DETAILED DESCRIPTION

[0019] 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.

[0020] 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.

[0021] 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.

[0022] See also Figure 1-Figure 3 A plasma rotating electrode atomization powder making device comprises an atomization chamber 1, the ends and sides of the atomization chamber 1 are provided with water cooling interlayers 2, each water cooling interlayer 2 is provided with a plurality of heat transfer baffles 3, the plurality of heat transfer baffles 3 divide the water cooling interlayer 2 into a plurality of cooling channels 4, the plurality of cooling channels 4 are connected end to end to form a circulation flow channel 5, and the atomization chamber 1 is provided with a circulating water inlet 6 and a circulating water outlet 7 connected with both ends of the circulation flow channel 5.

[0023] When the wall surface of the atomizing chamber 1 needs to be cooled, the circulating water inlet 6 and the circulating water outlet 7 are connected to the circulating water pipe, and a water storage tank and a water pump are provided on the circulating water pipe. The cooling water is pumped into the circulating flow channel 5 through the circulating water inlet 6 by the water pump. When the cooling water passes through the cooling channel 4, it will exchange heat with the side wall of the heat transfer baffle 3 and the inner wall surface of the water-cooled interlayer 2, thereby cooling the wall surface of the atomizing chamber 1. The cooling water after heat exchange flows back to the water storage tank through the circulating water outlet 7 for reuse.

[0024] In this embodiment, a heat transfer baffle 3 is arranged in the water-cooling interlayer 2, and the water-cooling interlayer 2 is divided into a plurality of cooling channels 4 which are connected end to end by the heat transfer baffle 3. While ensuring that the cooling water can circulate and exchange heat in the water-cooling interlayer 2, the heat transfer baffle 3 acts as a heat dissipation fin, which can effectively increase the heat exchange area and improve the cooling effect of the atomization chamber 1.

[0025] See also Figure 1 and Figure 2 In some embodiments, a concave cavity is formed at the end and side of the atomizing chamber 1, and an end cover 8 is detachably connected to the top of the concave cavity. The concave cavity and the end cover 8 form a water-cooled interlayer 2, and the inner ends of a plurality of heat transfer baffles 3 are in close contact with the inner inner wall surface of the water-cooled interlayer 2, and the outer ends are integrally formed on the end cover 8. With such a design, it is only necessary to cover the end cover 8 on the concave cavity, and the end cover 8, the heat transfer baffle 3 and the inner bottom surface of the concave cavity can be directly used to form a circulation channel 5, and the construction process of the entire circulation channel 5 is relatively simple. Among them, the width of the heat transfer baffle 3 can be designed to be as thin as possible, so that as many heat transfer baffles 3 as possible can be installed in the water-cooled interlayer 2, thereby further increasing the heat exchange area.

[0026] See also Figure 1 In some embodiments, a feed port is provided on one side of the atomizing chamber 1, and one end of the electrode rod 9 is inserted into the atomizing chamber 1 through the feed port. A plasma gun 10 facing the electrode rod 9 is also provided in the atomizing chamber 1. The other end of the electrode rod 9 is connected to a driving assembly, and the driving assembly is used to drive the electrode rod 9 to rotate at a high speed.

[0027] The working principle of the above-mentioned plasma rotating electrode atomization powder making equipment is: the driving component drives the electrode rod 9 to extend into the atomization chamber 1, 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, and the high-speed rotating rod end face is melted, broken, and condensed into powder by the high-temperature plasma arc.

[0028] See also Figure 1 and Figure 2 In some embodiments, the driving assembly 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 to realize the feeding of the electrode rod 9.

[0029] 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 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.

[0030] See also Figure 1 and Figure 2 In order to ensure smooth feeding and smooth rotation of the electrode rod material 9, two groups of slide rails are arranged side by side on the base 11, and the cross-section of each group of slide rails is T-shaped. The bottom of the base of the driving motor 12 is provided with a T-shaped slide groove adapted to the slide rail.

[0031] Among them, in practical applications, the atomizing chamber 1 can be designed as an inert gas protection chamber or a vacuum chamber according to the specific characteristics of the powder to be prepared. For example, when the atomizing chamber 1 is an inert gas protection chamber, a gas filling device can be provided on the atomizing chamber 1, and the gas filling device is connected to the atomizing chamber 1 through a gas filling pipe, and a gas valve is provided on the gas filling pipe. By introducing a protective gas such as argon into the atomizing chamber 1, oxidation of the prepared powder can be prevented. In addition, by providing a circulating gas outlet and a circulating gas inlet at the upper and lower ends of the atomizing chamber, respectively, the circulating gas outlet and the circulating gas inlet are connected through a gas circulation pipe, and a circulating gas pump is provided on the gas circulation pipe. In this design, the circulating gas pump can be used to drive the protective gas in the atomizing chamber 1 to circulate, which can improve the cooling effect of the droplets, prevent the powder from sticking, and further reduce the particle size of the prepared powder.

[0032] In order to effectively prevent the leakage of inert gas, a dynamic seal bearing 15 is provided at the feed port of the atomizing chamber 1, and the electrode rod material 9 passes through the dynamic seal bearing 15 and extends into the atomizing chamber 1. Of course, when the atomizing chamber 1 is a vacuum chamber, an exhaust device can be added to the atomizing chamber 1.

[0033] 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 scope of protection of the invention.

[0034] 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).

[0035] 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.

[0036] 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 plasma rotating electrode atomization powder making device, comprising an atomization chamber (1), characterized in that: The ends and sides of the atomizing chamber (1) are both provided with water-cooling interlayers (2), each of the water-cooling interlayers (2) is provided with a plurality of heat transfer baffles (3), the plurality of heat transfer baffles (3) divide the water-cooling interlayer (2) into a plurality of cooling channels (4), the plurality of cooling channels (4) are connected end to end to form a circulation channel (5), and the atomizing chamber (1) is provided with a circulating water inlet (6) and a circulating water outlet (7) which are connected to both ends of the circulation channel (5).

2. The plasma rotating electrode atomization powder making equipment according to claim 1, characterized in that: The end and side of the atomizing chamber (1) are both formed with a concave cavity, the top of the concave cavity is detachably connected to an end cover (8), the concave cavity and the end cover (8) surround the water-cooling interlayer (2), the inner ends of a plurality of the heat transfer baffles (3) are in close contact with the inner wall surface of the water-cooling interlayer (2), and the outer ends are fixedly connected to the end cover (8).

3. The plasma rotating electrode atomization powder making equipment according to claim 2, characterized in that: The heat transfer baffle (3) and the end cover (8) are integrally formed.

4. The plasma rotating electrode atomization powder making equipment according to any one of claims 1 to 3, characterized in that: A feed port is provided on one side of the atomizing chamber (1), and one end of the electrode rod (9) is inserted into the atomizing chamber (1) through the feed port. A plasma gun (10) facing the electrode rod (9) is also provided in the atomizing chamber (1). The other end of the electrode rod (9) is connected to a driving component, and the driving component is used to drive the electrode rod (9) to rotate at a high speed.

5. The plasma rotating electrode atomization powder making equipment according to claim 4, characterized in that: The driving assembly 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 to realize feeding of the electrode bar (9).

6. The plasma rotating electrode atomization powder making equipment according to claim 5, characterized in that: Two groups of slide rails are arranged side by side on the base (11), and the cross section of each group of slide rails is T-shaped. The bottom of the base of the drive motor (12) is provided with a T-shaped slide groove adapted to the slide rail.

7. The plasma rotating electrode atomization powder making equipment according to claim 4, characterized in that: The atomization chamber (1) is an inert gas protection chamber or a vacuum chamber.

8. The plasma rotating electrode atomization powder making equipment according to claim 7, characterized in that: A dynamic sealing bearing (15) is provided at the feed inlet of the atomizing chamber (1), and the electrode rod material (9) passes through the dynamic sealing bearing (15).

Images