Rotating electrode powder manufacturing equipment and high-speed motor thereof

Abstract

The utility model discloses rotating electrode powder manufacturing equipment and a high-speed motor thereof, and aims to effectively prevent magnetic steel from falling off from a rotor core under the working condition of high rotating speed. Therefore, the high-speed motor of the rotating electrode powder manufacturing equipment provided by the utility model comprises a motor stator and a motor rotor, the motor rotor comprises a rotor iron core and magnetic steel, the magnetic steel is embedded on the outer ring surface of the rotor iron core, the outer ring surface of the rotor iron core is provided with a built-in groove, the bottom of the built-in groove is provided with a blind hole, and the blind hole is communicated with the motor stator. The magnetic steel is provided with a through hole, after the magnetic steel is fixedly embedded in the corresponding embedded groove in a matched mode, the blind hole is aligned with the through hole to jointly form a glue pouring channel, glue is poured into the glue pouring channel and solidified to form a fixing pin, and the two ends of the glue pouring channel are large, and the middle of the glue pouring channel is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder making equipment, and in particular relates to a rotating electrode powder making equipment and a high-speed motor thereof. Background Art

[0002] The principle of plasma rotating electrode powder making is to melt the end face of the high-speed rotating consumable electrode rod with high-temperature plasma, and the end face of the electrode rod forms a molten liquid film and breaks into droplets under the action of centrifugal force. The droplets are spheroidized and condensed into powder under the action of surface tension. The magnetic steel of the motor used in the current rotating electrode powder making equipment is fixed in the slot of the rotor core by gluing. Since the motor speed is as high as 20,000 revolutions or even higher, the magnetic steel on the rotor core is very easy to detach under high speed conditions, thus affecting the normal operation of the powder making equipment. Summary of the invention

[0003] The main purpose of the utility model is to provide a rotating electrode powder making device and a high-speed motor thereof, aiming to effectively prevent the magnetic steel from falling off the rotor core under high-speed working conditions.

[0004] To this end, the utility model provides a high-speed motor for a rotating electrode powder making device, comprising a motor stator and a motor rotor, wherein the motor rotor comprises a rotor core and a magnetic steel, wherein the magnetic steel is embedded on the outer ring surface of the rotor core, wherein an embedding groove is provided on the outer ring surface of the rotor core, a blind hole is provided at the bottom of the embedding groove, and a through hole is provided on the magnetic steel. After the magnetic steel is matched and embedded in the corresponding embedding groove, the blind hole is aligned with the through hole to jointly form a glue injection channel, wherein glue is injected into the glue injection channel and solidified to form a fixing pin, and the glue injection channel is large at both ends and small in the middle.

[0005] Specifically, the motor rotor is also coated with a carbon fiber layer.

[0006] Specifically, an adhesive layer is provided between the bottom surface of the magnetic steel and the bottom of the embedding groove.

[0007] Specifically, an axial hole is opened at the center of the rotor core, and a rotating shaft is fixedly installed in the axial hole.

[0008] Specifically, the motor rotor is coaxially assembled in the inner cavity of the motor stator.

[0009] The utility model also provides a rotating electrode powder making device adopting the high-speed motor.

[0010] Compared with the prior art, the utility model has the following beneficial effects: by arranging a blind hole on the embedding groove of the rotor core and arranging a through hole at a corresponding position on the magnetic steel, when the magnetic steel is matched and embedded in the corresponding embedding groove, the blind hole and the through hole are aligned and connected to form a glue pouring channel, and then the fixing pin can be formed by pouring glue in the glue pouring channel and waiting for the glue to solidify. Since the glue pouring channel is large at both ends and small in the middle, the fixing pin also has a structure with large ends and small in the middle. Such a design allows the magnetic steel to be firmly installed on the rotor core, effectively preventing the magnetic steel from detaching from the core under the action of centrifugal force during high-speed rotation. 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 high-speed motor provided by an embodiment of the utility model;

[0013] Among them: 1. motor stator; 101. stator core; 102. winding; 2. motor rotor; 201. rotor core; 202. magnetic steel; 3. shaft hole; 4. embedded groove; 5. blind hole; 6. through hole; 7. fixing pin; 8. carbon fiber layer; 9. adhesive layer. DETAILED DESCRIPTION

[0014] 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.

[0015] 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.

[0016] 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.

[0017] See also Figure 1 A high-speed motor of a rotating electrode powder making device comprises a motor stator 1 and a motor rotor 2. The motor rotor 2 is coaxially assembled in the inner cavity of the motor stator 1. An axial hole 3 is opened at the center of a rotor core 201. A rotating shaft is fixedly installed in the axial hole 3. The motor stator 1 contains a stator core 101 and a winding 102. The motor rotor 2 comprises a rotor core 201 and a magnetic steel 202. The magnetic steel 202 is embedded in the outer ring surface of the rotor core 201. An embedding groove 4 is provided on the outer ring surface of the rotor core 201. A blind hole 5 is provided at the bottom of the embedding groove 4. A through hole 6 is provided on the magnetic steel 202. After the magnetic steel 202 is matched and embedded in the corresponding embedding groove 4, the blind hole 5 is aligned with the through hole 6 to form a glue injection channel. Glue is injected and solidified in the glue injection channel to form a fixing pin 7. The glue injection channel has large ends and a small middle, such as being designed into a waist drum shape. The number of the fixing pins 7 can be one or more, and those skilled in the art can make adaptive adjustments according to actual needs.

[0018] In this embodiment, a blind hole 5 is provided on the embedding groove 4 of the rotor core 201, and a through hole 6 is provided at a corresponding position on the magnetic steel 202. When the magnetic steel 202 is matched and embedded in the corresponding embedding groove 4, the blind hole 5 is aligned and connected with the through hole 6 to form a glue pouring channel. Then, glue is poured into the glue pouring channel and a fixing pin 7 can be formed after the glue solidifies. Since the glue pouring channel is large at both ends and small in the middle, the fixing pin 7 also has a structure with large ends and small in the middle. Such a design allows the magnetic steel 202 to be firmly installed on the rotor core 201, and effectively prevents the magnetic steel 202 from detaching from the core under the action of centrifugal force during high-speed rotation. The glue poured into the glue pouring channel can be made of polyurethane glue and epoxy resin glue, etc., which are all existing materials and are not described here.

[0019] See also Figure 1 In some embodiments, a carbon fiber layer 8 can be further provided outside the motor rotor 2, and the outer peripheral surface of the rotor core 201 and the magnetic steel 202 can be wrapped with carbon fiber. Such a design, on the one hand, helps to reduce eddy current loss and improve motor efficiency, and on the other hand, the carbon fiber layer 8 can be used to further protect the magnetic steel 202.

[0020] See also Figure 1In actual operation, when the magnet 202 is installed, glue can be applied to the bottom surface of the magnet 202. After the magnet 202 is installed in the embedding groove 4, the glue at the bottom can be used to pre-fix 7 the magnet 202 on the rotor core 201, that is, the magnet 202 is pre-fixed 7 in the embedding groove 4 through the adhesive layer 9 at the bottom, and at the same time, the reliability of the sealing at the joint between the through hole 6 on the magnet 202 and the blind hole 5 on the rotor core 201 can be effectively guaranteed, and the glue can be prevented from seeping out from the joint surface between the magnet 202 and the rotor core 201 during glue pouring.

[0021] The utility model also protects a rotating electrode powder making device using the above-mentioned high-speed motor. As for other structures of the rotating electrode powder making device, they are all existing technologies and will not be described in detail here.

[0022] 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.

[0023] 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).

[0024] 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.

[0025] 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 high-speed motor of a rotating electrode powder making device, comprising a motor stator (1) and a motor rotor (2), wherein the motor rotor (2) comprises a rotor core (201) and a magnetic steel (202), wherein the magnetic steel (202) is embedded on the outer ring surface of the rotor core (201), and characterized in that: An embedding groove (4) is provided on the outer ring surface of the rotor core (201), a blind hole (5) is provided at the bottom of the embedding groove (4), a through hole (6) is provided on the magnetic steel (202), and after the magnetic steel (202) is matched and embedded in the corresponding embedding groove (4), the blind hole (5) is aligned with the through hole (6) to form a glue injection channel, and glue is injected into the glue injection channel and solidified to form a fixing pin (7), the glue injection channel is large at both ends and small in the middle, and the motor rotor (2) is also coated with a carbon fiber layer (8).

2. The high-speed motor according to claim 1, characterized in that: An adhesive layer (9) is provided between the bottom surface of the magnetic steel (202) and the bottom of the embedding groove (4).

3. The high-speed motor according to claim 1 or 2, characterized in that: An axial hole (3) is provided at the center of the rotor iron core (201), and a rotating shaft is fixedly installed in the axial hole (3).

4. The high-speed motor according to claim 1 or 2, characterized in that: The motor rotor (2) is coaxially assembled in the inner cavity of the motor stator (1).

5. A rotating electrode powder making device, characterized in that: A high-speed motor comprising any one of claims 1-4.

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