CN114054163A - Electromagnetic ball milling device based on fixed coil - Google Patents
Electromagnetic ball milling device based on fixed coil Download PDFInfo
- Publication number
- CN114054163A CN114054163A CN202111407656.1A CN202111407656A CN114054163A CN 114054163 A CN114054163 A CN 114054163A CN 202111407656 A CN202111407656 A CN 202111407656A CN 114054163 A CN114054163 A CN 114054163A
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- Prior art keywords
- ball milling
- fixed
- barrel
- ball
- electromagnetic
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Classifications
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- 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
- B02C17/005—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 the charge being turned over by magnetic forces
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- 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
- B02C17/10—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 with one or a few disintegrating members arranged in the container
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- 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
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses an electromagnetic ball milling device based on fixed coils, which comprises a ball milling barrel, magnetic small balls and electromagnetic coils, wherein the magnetic small balls are placed in the ball milling barrel, and the electromagnetic coils connected with an alternating current power supply are arranged at the bottom of the ball milling barrel. Still include the base, the base includes support piece and fixes the mounting panel at support piece top, solenoid fixes the mounting panel lower surface, the ball-milling bucket is installed the mounting panel upper surface, solenoid with the coaxial setting of ball-milling bucket. The ball mill has the advantages of more balls moving and good ball milling effect.
Description
Technical Field
The invention relates to the technical field of ball mills, in particular to an electromagnetic ball mill device based on a fixed coil.
Background
The ball mill is the key equipment for crushing the materials after the materials are crushed. This type of mill is provided with a number of steel balls as grinding media in the barrel.
It is widely used in the production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for dry or wet grinding of various ores and other grindable materials. The ball mill is suitable for grinding various ores and other materials, and is widely applied to the industries of mineral separation, building materials, chemical industry and the like. In the existing ball mill, small balls and materials are placed in a container, and the materials and the small balls are collided to grind the materials through the rotation of the container. The prior ball mill has less ball movement and low ball milling efficiency.
Disclosure of Invention
The invention aims to provide an electromagnetic ball milling device and a ball milling method based on a fixed coil, which have the advantages of more small balls in movement and good ball milling effect.
The invention provides an electromagnetic ball milling device based on a fixed coil, which comprises a ball milling barrel, magnetic small balls and an electromagnetic coil, wherein the magnetic small balls are placed in the ball milling barrel, and the electromagnetic coil connected with an alternating current power supply is arranged at the bottom of the ball milling barrel.
Further, still include the base, the base includes support piece and fixes the mounting panel at support piece top, solenoid fixes the mounting panel lower surface, the ball-milling bucket is installed the mounting panel upper surface, solenoid with the coaxial setting of ball-milling bucket.
Further, ball-milling bucket swivelling joint is in the mounting panel upper surface, ball-milling bucket side is provided with the round ring gear, the mounting panel upper surface still is fixed with motor one, be fixed with the straight-teeth gear on the output shaft of motor one, the straight-teeth gear with use gear belt transmission between the ring gear.
Further, the ball milling barrel is fixed on the upper surface of the mounting plate, the bottom side of the interior of the ball milling barrel is rotatably connected with a rotating plate, and the magnetic small balls are placed on the upper surface of the rotating plate; the ball milling barrel is characterized by also comprising a transmission mechanism for driving the rotating plate to rotate at the bottom of the ball milling barrel.
Further, the rotating plate is connected with the bottom of the ball milling barrel through a bearing; the upper surface of the rotating plate is provided with a plurality of spherical bulges.
Further, a barrel cover is arranged at the top of the ball milling barrel; the transmission mechanism comprises a second motor and a shaft rod; the lower end of the shaft lever is fixed on the rotating plate, the upper end of the shaft lever penetrates out of the middle of the barrel cover, the second motor is fixed on the upper surface of the barrel cover, and the second motor drives the second shaft lever to rotate.
Further, the motor is horizontally fixed on the upper surface of the barrel cover, and the motor and the upper end of the shaft rod are in transmission through a bevel gear set.
Further, the support piece is a circular container, the mounting plate comprises a circular plate and a convex ring protruding downwards from the edge of the circular plate, and the convex ring is fittingly located on the outer surface of the support piece.
Furthermore, the outer surface of the supporting piece is provided with a hook-shaped recess, the hook-shaped recess is positioned on the inner side of the raised ring, the inner surface of the raised ring is longitudinally connected with a sliding block in a sliding manner, an elastic piece is arranged between the sliding block and the raised ring, and the sliding block corresponds to the hook-shaped recess.
Further, an iron core is fixed in the middle of the electromagnetic coil.
The invention has the beneficial effects that: when the device is powered on, the device starts to rotate, and the coil can emit electromagnetic force along the axial direction of the coil according to the principle of electromagnetic induction. The device realizes the up-and-down movement of the magnetic small balls in the ball milling barrel by introducing electromagnetic force. The disorder degree of the system is increased by the irregular disturbance of the magnetic small balls, and in the movement of the system, the collision and friction between the magnetic small balls and the magnetic small balls, between the magnetic small balls and the powder and between the balls and the tank body enable the materials to be ground into powder.
Drawings
Fig. 1 is a perspective view of a first embodiment of the present invention.
Fig. 2 is a cross-sectional view of a first embodiment of the present invention.
Fig. 3 is a perspective view of a second embodiment of the present invention.
Fig. 4 is a sectional view of a second embodiment of the present invention.
Fig. 5 is a perspective view of a mounting plate in the first and second embodiments of the present invention.
Fig. 6 is a perspective view of a support member support in the first and second embodiments of the present invention.
Fig. 7 is a schematic view of the magnetic flux of the electromagnetic coil in the present invention obtained by simulation.
Fig. 8 is a schematic view of the magnetic field strength of the electromagnetic coil in the present invention obtained by simulation.
Fig. 9 is a graph showing a change in electromagnetic attractive force in the present invention obtained by simulation.
Fig. 10 is a graph of the number of collisions and normal force according to the present invention as a function of the diameter of the magnetic sphere, obtained by simulation.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The first embodiment is as follows:
as shown in fig. 1, fig. 2, fig. 5 and fig. 6, the embodiment discloses an electromagnetic ball milling device based on a fixed coil, which includes a ball milling barrel 1, magnetic small balls 2 and an electromagnetic coil 3, wherein the magnetic small balls 2 are placed in the ball milling barrel 1, and the electromagnetic coil 3 connected with an alternating current power supply is arranged at the bottom of the ball milling barrel 1.
Still include the base, the base includes support piece 41 and fixes the mounting panel 42 at support piece 41 top, solenoid 3 is fixed the mounting panel 42 lower surface, ball-milling bucket 1 is installed the mounting panel 42 upper surface, solenoid 3 with ball-milling bucket 1 coaxial setting.
Ball-milling bucket 1 swivelling joint be in the mounting panel 42 upper surface, 1 lateral part of ball-milling bucket is provided with round ring gear 11, the mounting panel 42 upper surface still is fixed with a motor 51, be fixed with spur gear 52 on the output shaft of a motor 51, spur gear 52 with use gear belt transmission between the ring gear 11. The supporting member 41 is a circular container, and the mounting plate 42 includes a circular plate and a convex ring protruding downward from the edge of the circular plate, and the convex ring is fittingly located on the outer surface of the supporting member 41. The outer surface of the supporting member 41 is provided with a hook-shaped recess 411, the hook-shaped recess 411 is located on the inner side of the convex ring, the inner surface of the convex ring is longitudinally connected with a sliding block 421 in a sliding manner, an elastic member is arranged between the sliding block 421 and the convex ring, and the sliding block 421 corresponds to the hook-shaped recess 411. An iron core is fixed in the middle of the electromagnetic coil 3.
When the device is powered on, the device starts to rotate, and the coil can emit electromagnetic force along the axial direction of the coil according to the principle of electromagnetic induction. The device realizes the up-and-down movement of the magnetic small balls 2 in the ball milling barrel 1 just by introducing electromagnetic force. The disorder degree of the system is increased by the irregular disturbance of the magnetic small balls 2, and in the movement of the system, the collision and friction between the magnetic small balls 2 and the magnetic small balls 2, between the magnetic small balls 2 and powder and between the balls and the tank body enable the material to be ground into powder.
Example two:
as shown in fig. 3, 4, 5 and 6, the embodiment discloses an electromagnetic ball milling device based on a fixed coil, which includes a ball milling barrel 1, magnetic small balls 2 and an electromagnetic coil 3, wherein the magnetic small balls 2 are placed in the ball milling barrel 1, and the electromagnetic coil 3 connected with an alternating current power supply is arranged at the bottom of the ball milling barrel 1.
Still include the base, the base includes support piece 41 and fixes the mounting panel 42 at support piece 41 top, solenoid 3 is fixed the mounting panel 42 lower surface, ball-milling bucket 1 is installed the mounting panel 42 upper surface, solenoid 3 with ball-milling bucket 1 coaxial setting.
The ball milling barrel 1 is fixed on the upper surface of the mounting plate 42, the bottom side inside the ball milling barrel 1 is rotatably connected with a rotating plate 61, and the magnetic small balls 2 are placed on the upper surface of the rotating plate 61; the ball milling barrel further comprises a transmission mechanism for driving the rotating plate 61 to rotate at the bottom of the ball milling barrel 1. The rotating plate 61 is connected with the bottom of the ball milling barrel 1 through a bearing 62; the upper surface of the rotating plate 61 is provided with a plurality of spherical protrusions 611.
The top of the ball milling barrel 1 is provided with a barrel cover 7; the transmission mechanism comprises a second motor 63 and a shaft rod 64; the lower end of the shaft lever 64 is fixed on the rotating plate 61, the upper end of the shaft lever 64 penetrates out of the middle of the barrel cover 7, the second motor 63 is fixed on the upper surface of the barrel cover 7, and the second motor 63 drives the second shaft lever 64 to rotate. The motor is horizontally fixed on the upper surface of the barrel cover 7, and the motor and the upper end of the shaft lever 64 are driven by a bevel gear set 65. The supporting member 41 is a circular container, and the mounting plate 42 includes a circular plate and a convex ring protruding downward from the edge of the circular plate, and the convex ring is fittingly located on the outer surface of the supporting member 41.
The outer surface of the supporting member 41 is provided with a hook-shaped recess 411, the hook-shaped recess 411 is located on the inner side of the convex ring, the inner surface of the convex ring is longitudinally connected with a sliding block 421 in a sliding manner, an elastic member is arranged between the sliding block 421 and the convex ring, and the sliding block 421 corresponds to the hook-shaped recess 411. An iron core is fixed in the middle of the electromagnetic coil 3.
The invention has the beneficial effects that: when the device is powered on, the device starts to rotate, and the coil can emit electromagnetic force along the axial direction of the coil according to the principle of electromagnetic induction. The device realizes the up-and-down movement of the magnetic small balls 2 in the ball milling barrel 1 just by introducing electromagnetic force. The disorder degree of the system is increased by the irregular disturbance of the magnetic small balls 2, and in the movement of the system, the collision and friction between the magnetic small balls 2 and the magnetic small balls 2, between the magnetic small balls 2 and powder and between the balls and the tank body enable the material to be ground into powder.
Experimental analysis:
as shown in fig. 7 and 8: the electromagnetic system is simulated through ABAQUS, a ferronickel ball is put on the turntable to simulate the attraction process of the electromagnet on the turntable, and whether the selected electromagnet meets the requirement is verified. The 1.1A alternating current is converted into the volume charge density required by simulation, the volume charge density is input into an ABAQUS loading step, the transient response electromagnetic analysis step is used, the current frequency is 50HZ sine alternating current, the stability can be reached within 10S and 0.05S during simulation, and the stable time increment is 1 e-2S. After the calculation is finished; the magnetic flux and magnetic field strength of the electromagnetic field system are shown in fig. 7 and 8. The magnetic flux is the biggest at the iron core position, and nearly all the magnetic induction lines that receive will pass through from the iron core is inside, makes the effective magnetization of iron core like this, and then produces the appeal to the ferronickel ball. The magnetic field is mainly concentrated in the central area of the ferronickel magnetic core, the magnetic core of the coil part is weaker and is not enough to attract heavier materials, the magnetic field intensity in the ferronickel magnetic core area is more uniform and is about 2.8e +2A/m, the use requirement is met, the magnetic field intensity at four positions of the edge area of the iron core is larger and can reach 5.09e +2A/m to the maximum extent, the concentration degree is high, and the uniformity degree of the central area is not influenced.
As shown in fig. 9: lorentz force is applied to mechanism simulation by using an emloads method, the attraction capability of an electromagnet to a nickel-iron grinding ball is judged by using display dynamics, the simulation result is that the maximum attraction force applied to the grinding ball in the Z-axis direction is 264N, the maximum action force is generated at the contact part of a small ball and a turntable, and the current is changed into a sine function change relation by passing alternating current, so that the applied electromagnetic action force also becomes the sine function change relation, and an original graph of a document can be checked. The change curve of the electromagnetic attractive force is shown in fig. 9. The effective value of the electromagnetic force is 0.71 times as large as the effective value of the alternating current, so that the effective attractive force is 187N at the alternating current, and is kept 264N when the direct current is applied. Analysis shows that the effective attractive force required in the design can reach 187N, and simulation analysis shows that the XDA-120/40 type electromagnet meets the selection requirement.
As shown in fig. 10: the collision times are slowly reduced along with the increase of the diameter of the ferronickel grinding ball, the reduced amplitude is lower, the impact times are not greatly influenced by the diameter of the ferronickel grinding ball, the acting force of a collision method is obviously increased along with the increase of the diameter of the small ball, in addition, the jumping behavior that the ferronickel grinding ball is separated from the rotary table is found in animation when the diameter of the ball is more than or equal to 9mm, but the attraction still plays a role in attracting the ferronickel grinding ball.
In the design, the collision times and the normal collision acting force are comprehensively considered through the relation curve, obviously, the intersection point of the two curves is the optimal solution, the whole of the intersection point is 10mm, the collision times are 1220, and the normal acting force is 3.3N.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an electromagnetism ball-milling device based on stationary coil, its characterized in that includes ball-milling bucket (1), magnetism pellet (2) and solenoid (3), place magnetism pellet (2) in ball-milling bucket (1), ball-milling bucket (1) bottom is provided with and is connected with alternating current power supply solenoid (3).
2. A fixed coil-based electromagnetic ball milling apparatus according to claim 1, further comprising a base, wherein the base comprises a support member (41) and a mounting plate (42) fixed on the top of the support member (41), the electromagnetic coil (3) is fixed on the lower surface of the mounting plate (42), the ball milling barrel (1) is mounted on the upper surface of the mounting plate (42), and the electromagnetic coil (3) is coaxially arranged with the ball milling barrel (1).
3. The electromagnetic ball milling device based on the fixed coil is characterized in that the ball milling barrel (1) is rotatably connected to the upper surface of the mounting plate (42), a circle of gear ring (11) is arranged on the side of the ball milling barrel (1), a first motor (51) is further fixed to the upper surface of the mounting plate (42), a straight gear (52) is fixed to an output shaft of the first motor (51), and a gear belt transmission is used between the straight gear (52) and the gear ring (11).
4. A fixed coil-based electromagnetic ball milling apparatus as claimed in claim 2, wherein said ball milling barrel (1) is fixed on the upper surface of said mounting plate (42), a rotating plate (61) is rotatably connected to the bottom side of the interior of said ball milling barrel (1), said magnetic beads (2) are placed on the upper surface of said rotating plate (61); the ball milling barrel is characterized by further comprising a transmission mechanism for driving the rotating plate (61) to rotate at the bottom of the ball milling barrel (1).
5. A fixed coil-based electromagnetic ball milling apparatus as claimed in claim 4, wherein the rotating plate (61) is connected with the bottom of the ball milling barrel (1) through a bearing (62); the upper surface of the rotating plate (61) is provided with a plurality of spherical protrusions (611).
6. The electromagnetic ball milling device based on the fixed coil is characterized in that a barrel cover (7) is arranged at the top of the ball milling barrel (1); the transmission mechanism comprises a second motor (63) and a shaft rod (64); the lower end of the shaft lever (64) is fixed on the rotating plate (61), the upper end of the shaft lever (64) penetrates out of the middle of the barrel cover (7), the second motor (63) is fixed on the upper surface of the barrel cover (7), and the second motor (63) drives the second shaft lever (64) to rotate.
7. A stationary coil based electromagnetic ball milling apparatus as claimed in claim 6, wherein said motor is horizontally mounted on the upper surface of said lid (7) and is driven by a bevel gear set (65) with the upper end of said shaft (64).
8. A stationary coil-based electromagnetic ball milling apparatus as set forth in claim 2 wherein said support member (41) is a circular container and said mounting plate (42) comprises a circular plate and a raised ring projecting downwardly from the edge of said circular plate, said raised ring being adapted to be located on the outer surface of said support member (41).
9. The electromagnetic ball milling device based on the fixed coil as claimed in claim 8, wherein the outer surface of the supporting member (41) has a hook-shaped recess (411), the hook-shaped recess (411) is located inside the raised ring, a sliding block (421) is longitudinally slidably connected to the inner surface of the raised ring, an elastic member is disposed between the sliding block (421) and the raised ring, and the sliding block (421) corresponds to the hook-shaped recess (411).
10. A stationary coil-based electromagnetic ball milling apparatus as claimed in any one of claims 1 to 9, wherein a core is fixed in the middle of the electromagnetic coil (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407656.1A CN114054163A (en) | 2021-11-25 | 2021-11-25 | Electromagnetic ball milling device based on fixed coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407656.1A CN114054163A (en) | 2021-11-25 | 2021-11-25 | Electromagnetic ball milling device based on fixed coil |
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| Publication Number | Publication Date |
|---|---|
| CN114054163A true CN114054163A (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111407656.1A Pending CN114054163A (en) | 2021-11-25 | 2021-11-25 | Electromagnetic ball milling device based on fixed coil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118558424A (en) * | 2024-08-02 | 2024-08-30 | 江苏鹏飞集团股份有限公司 | Ore grinding equipment and method for ore processing |
-
2021
- 2021-11-25 CN CN202111407656.1A patent/CN114054163A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118558424A (en) * | 2024-08-02 | 2024-08-30 | 江苏鹏飞集团股份有限公司 | Ore grinding equipment and method for ore processing |
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