CN115118110A - Gearless ball mill direct drive motor - Google Patents

Gearless ball mill direct drive motor Download PDF

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Publication number
CN115118110A
CN115118110A CN202110285040.5A CN202110285040A CN115118110A CN 115118110 A CN115118110 A CN 115118110A CN 202110285040 A CN202110285040 A CN 202110285040A CN 115118110 A CN115118110 A CN 115118110A
Authority
CN
China
Prior art keywords
stator
disc
ball mill
axial
gearless
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110285040.5A
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Chinese (zh)
Inventor
马忠威
陈德民
王文慧
马骁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magna Magnetomotive Co ltd
Original Assignee
Magna Magnetomotive Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magna Magnetomotive Co ltd filed Critical Magna Magnetomotive Co ltd
Priority to CN202110285040.5A priority Critical patent/CN115118110A/en
Publication of CN115118110A publication Critical patent/CN115118110A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/24—Driving mechanisms
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Food Science & Technology (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention discloses a direct drive motor of a gearless ball mill, which comprises: a base, a first stator disk, a second stator disk, and a central magnet rotor disk; the base is used for mounting other parts; the first stator disc is of an annular structure and is provided with an electromagnet; a first stator disc is mounted on the base; the second stator disc is of an annular structure and is provided with an electromagnet; a second stator plate is mounted on the base; the first stator disc and the second stator disc are arranged at intervals; a central magnet rotor disk is arranged between the first stator disk and the second stator disk, and the central magnet rotor disk is used for directly driving the revolving drum of the ball mill to rotate. The direct drive motor of the gearless ball mill adopts an axial disc type distribution structure, and the magnetic steel of the rotor disc of the same central magnet can respectively generate magnetic force action with the first stator disc and the second stator disc at two sides, so that the equipment has higher power density and has the advantages of small volume, light rotor mass, large heat dissipation area and easy manufacture.

Description

Gearless ball mill direct drive motor
Technical Field
The invention belongs to the technical field of direct drive motors, and particularly relates to a direct drive motor of a gearless ball mill.
Background
When the capacity of the roller ball mill is large, the gear driving mode cannot be realized due to the capacity problem of the gear, and the gearless driving becomes a necessary choice.
The existing gearless driving technology is that a radial motor rotor is arranged on a roller, and a radial motor stator is utilized to drive the motor rotor to drive the roller to rotate and work. The radial motor direct-drive scheme has the defects of difficult processing, large volume and heavy weight of a motor rotor, difficult processing and high cost.
The invention provides a disc type axial motor scheme of a direct-drive roller, and a scheme of using one central disc, a magnet disc and two conductor discs forms a magnetic field working gap of two planes, thereby greatly improving the utilization efficiency of a magnet and reducing the quality of a rotor; and the modularized iron core structure is adopted, and the difficulty in manufacturing and installing the equipment is reduced by a winding concentration mode.
Disclosure of Invention
The invention aims to provide a direct drive motor of a gearless ball mill, which aims to solve the technical problem.
The technical scheme for solving the technical problems is as follows: a gearless ball mill direct drive motor, comprising: the rotor comprises a base, a first stator disc, a second stator disc and a central magnet rotor disc; the base is used for mounting other parts; the first stator disc is of an annular structure and is provided with an electromagnet; a first stator disc is mounted on the base; the second stator disc is of an annular structure and is provided with an electromagnet; a second stator plate is mounted on the base; the first stator disc and the second stator disc are arranged at intervals; the central magnet rotor disc is arranged between the first stator disc and the second stator disc, and the central magnet rotor disc is used for directly driving the revolving drum of the ball mill to rotate.
The direct drive motor of the gearless ball mill is characterized in that the first stator disc comprises a stator lining plate, an axial iron core, a winding and a radial iron core, wherein the mounting end of the axial iron core is vertically fixed on one side of the stator lining plate, and the winding is wound in the middle of the axial iron core; the radial iron cores are arranged in the gap between the adjacent axial iron cores.
The direct drive motor of the gearless ball mill is characterized in that the axial iron core is formed by combining first magnetic conduction laminated sheets, and the stacking direction of the first magnetic conduction sheets is radial; the radial iron core is formed by combining second magnetic conduction laminated sheets, and the stacking direction of the second magnetic conduction laminated sheets is axial.
The direct drive motor of the gearless ball mill is characterized in that the second stator disc comprises a stator lining plate, an axial iron core, a winding and a radial iron core, wherein the mounting end of the axial iron core is vertically fixed on one side of the stator lining plate, and the winding is wound in the middle of the axial iron core; the radial iron cores are arranged in the gap between the adjacent axial iron cores.
The direct drive motor of the gearless ball mill is characterized in that the axial iron core is formed by combining first magnetic conduction laminated sheets, and the stacking direction of the first magnetic conduction laminated sheets is radial; the radial iron core is formed by combining second magnetic conduction laminated sheets, and the stacking direction of the second magnetic conduction laminated sheets is axial.
The direct drive motor of the gearless ball mill is characterized in that the central magnet rotor disc comprises a rotor lining plate and permanent magnets, and the permanent magnets are fixed on the rotor lining plate.
The invention relates to a direct drive motor of a gearless ball mill, further, the arrangement of the permanent magnets on the magnetic poles of a rotor disc of a central magnet is as follows: the magnetic poles of the adjacent permanent magnets are arranged in opposite directions.
The invention has the beneficial effects that: the direct drive motor of the gearless ball mill adopts an axial disk type distribution structure, and the magnetic steel of the rotor disk of the same central magnet can respectively generate magnetic force action with the first stator disk and the second stator disk at two sides, so that the equipment has higher power density and has the advantages of small volume, light rotor mass, large heat dissipation area and easy manufacture.
Drawings
The above and/or other advantages of the invention will become more apparent and more readily appreciated from the following detailed description taken in conjunction with the accompanying drawings, which are given by way of illustration only and not by way of limitation, and in which:
FIG. 1 is a schematic view of a direct drive motor of a gearless ball mill according to an embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of a direct drive motor of the gearless ball mill of the present invention;
FIG. 3 is a schematic view of a center magnet rotor disk according to one embodiment of the present invention;
FIG. 4 is a partial enlarged schematic view of a center magnet rotor disk according to one embodiment of the invention;
FIG. 5 is a schematic axial core of one embodiment of the present invention;
FIG. 6 is a schematic view of a radial core according to an embodiment of the present invention;
FIG. 7 is a schematic view of an axial core and radial core combination according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a coil and core combination according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the stator comprises a first stator disc, a second stator disc, a stator lining plate, a stator lining plate, a stator lining plate, a stator lining plate, a stator lining plate, a stator, a.
Detailed Description
Hereinafter, embodiments of the direct drive motor of the gearless ball mill of the present invention will be described with reference to the accompanying drawings.
The examples described herein are specific embodiments of the present invention, are intended to be illustrative and exemplary in nature, and are not to be construed as limiting the scope of the invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
The drawings accompanying this specification are for the purpose of illustrating the concepts of the invention and are not necessarily to scale, the drawings being schematic representations of the shapes of the parts and their interrelationships. It is noted that the drawings are not necessarily to the same scale so as to clearly illustrate the structures of the various elements of the embodiments of the invention. Like reference numerals are used to denote like parts.
Fig. 1 to 4 show a gearless ball mill direct drive motor according to an embodiment of the present invention, which includes:
the base 4 is used for mounting other parts and components;
the stator comprises a first stator disc 1, wherein the first stator disc 1 is of an annular structure, and the first stator disc 1 is provided with an electromagnet; the first stator disc 1 is arranged on the base 4;
the second stator disc 2, the second stator disc 2 is the annular structure, the second stator disc 2 has electromagnets; the second stator disc 2 is mounted on the base 4; the first stator disc 1 and the second stator disc 2 are arranged at intervals;
a central magnet rotor disc 3, the central magnet rotor disc 3 being arranged between the first stator disc 1 and the second stator disc 2, the central magnet rotor disc 3 being used for directly driving the bowl of the ball mill into rotation. As shown in fig. 3 and 4, the central magnet rotor disk 3 includes a rotor backing plate 31 and permanent magnets 32, and the permanent magnets 32 are fixed to the rotor backing plate 31. In a preferred embodiment, the arrangement of the poles of the permanent magnets 32 in the central magnet rotor disc 3 is as follows: the adjacent permanent magnets 32 have opposite magnetic poles. In addition, the central magnet rotor disks can also be arranged in other ways, for example, the permanent magnets are divided into groups according to the same direction of magnetic pole arrangement, and the magnetic pole arrangement directions of the permanent magnets of adjacent groups are opposite. Such as NN-SS-NN-SS.
The direct drive motor of the gearless ball mill adopts an axial disk type distribution structure, and the magnetic steel of the rotor disk of the same central magnet can respectively generate magnetic force with the first stator disk and the second stator disk at two sides, so that the device has higher power density and has the advantages of small volume, light rotor mass, large heat dissipation area and easy manufacture.
In the direct drive motor of the gearless ball mill of an embodiment, as shown in fig. 5 to 8, the first stator disc 1 comprises a stator lining plate 21, an axial iron core 22, a winding 23 and a radial iron core 24, the mounting end of the axial iron core 22 is vertically fixed on one side of the stator lining plate 21, and the winding 23 is wound on the middle part of the axial iron core 22; radial cores 24 are installed at the slit positions between the adjacent axial cores 22.
In the above embodiment of the present invention, the radial core 24 and the axial core 22 together form a magnetic field loop to constrain the interaction of the magnetic field generated by the winding and the magnetic field of the central magnet rotor disk to generate torque. In the invention, the design of the lamination arrangement direction of the radial iron core 24 and the axial iron core 22 ensures that the thickness direction of the laminations is always parallel to the magnetic field direction, so that the eddy current caused by the change of the magnetic field can be greatly reduced, and the heating loss of the iron core is reduced.
In a further preferred embodiment of the gearless ball mill direct drive motor, as shown in fig. 5 to 8, the axial iron core 22 is formed by combining first magnetically conductive laminations 221, and the stacking direction of the first magnetically conductive laminations is a radial direction; the radial core 24 is formed by combining second magnetically conductive laminations 241, and the stacking direction of the second magnetically conductive laminations 241 is axial. The radial iron core is manufactured according to the mode, so that the manufacturing efficiency of the radial iron core can be improved, and the processing and production difficulty is reduced.
In the gearless ball mill direct drive motor of an embodiment, as shown in fig. 5 to 8, the second stator disc 2 includes a stator lining plate 21, an axial iron core 22, a winding 23 and a radial iron core 24, a mounting end of the axial iron core 22 is vertically fixed on one side of the stator lining plate 21, and the winding 23 is wound on the middle part of the axial iron core 22; radial cores 24 are installed at the slit positions between the adjacent axial cores 22. In a further preferred embodiment of the gearless ball mill direct drive motor, as shown in fig. 5 to 8, the axial core 22 is formed by combining first magnetically conductive laminations 221, and the stacking direction of the first magnetically conductive laminations 221 is radial; the radial core 24 is formed by combining second magnetic conductive laminated sheets 241, and the stacking direction of the second magnetic conductive laminated sheets 241 is axial. The radial iron core is manufactured according to the mode, so that the manufacturing efficiency of the radial iron core can be improved, and the processing and production difficulty is reduced.
The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the invention, so as to achieve the purpose of the invention.

Claims (7)

1. The utility model provides a gearless ball mill directly drives motor which characterized in that includes: the rotor comprises a base (4), a first stator disc (1), a second stator disc (2) and a central magnet rotor disc (3); the base (4) is used for mounting other parts; the first stator disc (1) is of an annular structure, and the first stator disc (1) is provided with an electromagnet; the first stator disc (1) is arranged on the base (4); the second stator disc (2) is of an annular structure, and the second stator disc (2) is provided with an electromagnet; the second stator disc (2) is mounted on the base (4); the first stator disc (1) and the second stator disc (2) are arranged at intervals; the central magnet rotor disc (3) is arranged between the first stator disc (1) and the second stator disc (2), and the central magnet rotor disc (3) is used for directly driving a rotary drum of the ball mill to rotate.
2. The gearless ball mill direct drive motor according to claim 1, wherein the first stator disc (1) comprises a stator lining plate (21), an axial iron core (22), a winding (23) and a radial iron core (24), wherein the mounting end of the axial iron core (22) is vertically fixed on one side of the stator lining plate (21), and the winding (23) is wound in the middle of the axial iron core (22); the radial iron cores (24) are arranged at the positions of gaps between the adjacent axial iron cores (22).
3. The gearless ball mill direct drive motor according to claim 2, wherein the axial core (22) is formed by combining first magnetically conductive laminations (221), and the stacking direction of the first magnetically conductive laminations is radial; the radial iron core (24) is formed by combining second magnetic conduction laminated sheets (241), and the stacking direction of the second magnetic conduction laminated sheets (241) is axial.
4. A direct drive motor of a gearless ball mill according to claim 1, characterized in that the second stator disc (2) comprises a stator lining plate (21), an axial iron core (22), a winding (23) and a radial iron core (24), the mounting end of the axial iron core (22) is vertically fixed on one side of the stator lining plate (21), and the winding (23) is wound in the middle of the axial iron core (22); the radial iron cores (24) are arranged at the positions of gaps between the adjacent axial iron cores (22).
5. A gearless ball mill direct drive motor according to claim 4, wherein the axial core (22) is formed by combining first magnetically conductive laminations (221), and the stacking direction of the first magnetically conductive laminations (221) is radial; the radial iron core (24) is formed by combining second magnetic conduction laminated sheets (241), and the stacking direction of the second magnetic conduction laminated sheets (241) is axial.
6. A gearless ball mill direct drive motor according to any one of claims 1 to 5, wherein the central magnet rotor disc (3) comprises a rotor backing plate (31) and permanent magnets (32), the permanent magnets (32) being fixed to the rotor backing plate (31).
7. A gearless ball mill direct drive motor according to claim 6, wherein the permanent magnets (32) are arranged in the following manner at the poles of the central magnet rotor disc (3): the adjacent permanent magnets (32) have opposite magnetic pole arrangement directions.
CN202110285040.5A 2021-03-17 2021-03-17 Gearless ball mill direct drive motor Pending CN115118110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110285040.5A CN115118110A (en) 2021-03-17 2021-03-17 Gearless ball mill direct drive motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110285040.5A CN115118110A (en) 2021-03-17 2021-03-17 Gearless ball mill direct drive motor

Publications (1)

Publication Number Publication Date
CN115118110A true CN115118110A (en) 2022-09-27

Family

ID=83323603

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110285040.5A Pending CN115118110A (en) 2021-03-17 2021-03-17 Gearless ball mill direct drive motor

Country Status (1)

Country Link
CN (1) CN115118110A (en)

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