Ball milling device capable of generating rotation acceleration in radial direction

Abstract

The invention discloses a ball milling device capable of generating autorotation acceleration in the radial direction, which comprises a dispersing wheel uniformly provided with a plurality of radial through holes in the radial direction, each radial through hole is communicated with a central through hole in the dispersing wheel, and a radial blind hole is arranged between every two adjacent radial through holes; each radial through hole and each radial blind hole are respectively provided with a circulating hole consistent with the axial direction, and at least the acceleration surface of the radial through hole and / or the radial blind hole is provided with a rotation acceleration structure for increasing the rotation speed of the grinding medium. In the working process, when the grinding balls leave the dispersing wheel through the accelerating faces in the radial blind holes and / or the radial through holes, the moving speed of displacement can be generated, the rotating speed of high-speed rotation can also be generated, due to the fact that the grinding balls generate the high-speed rotating speed, the stability of the moving direction of the grinding balls can be guaranteed, the grinding balls can move farther, and grinding dead angles are reduced; meanwhile, the grinding balls generate high autorotation speed, so that the contact action between the grinding balls and the materials can be increased during interaction, and the grinding efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wet ball milling technology, and particularly to a ball milling device that generates radial rotational acceleration. Background Technology

[0002] Existing wet grinding methods include stirred ball mills, which utilize high-speed dispersing wheels to drive grinding media, such as grinding balls. The high-speed motion of the dispersing wheels interacts with the material, achieving grinding and reducing the material's diameter from a larger size to the required one. However, existing grinding and dispersing mechanisms can only increase the linear velocity of the grinding balls, not their rotational speed. This results in limited shearing action between grinding balls or between the grinding balls and the material, and unstable ball trajectories. Consequently, grinding efficiency decreases even with the same dispersing mechanism and rotational speed. Summary of the Invention

[0003] The main technical problem solved by this invention is to provide a ball milling device that generates radial rotational acceleration, which can increase the rotational speed of the grinding balls and improve grinding efficiency.

[0004] To address the aforementioned problems, the present invention provides a ball milling device that generates radial rotational acceleration. This device includes a grinding cylinder with a grinding chamber and a rotating shaft disposed within the grinding cylinder. One end of the rotating shaft, located outside the grinding cylinder, is connected to a drive mechanism, while the other end, located inside the grinding chamber, is provided with a grinding dispersion mechanism. This mechanism includes a dispersion wheel, which has a plurality of radially uniformly arranged through holes. Each radially arranged through hole communicates with a central through hole on the dispersion wheel. The accelerating surface of each radially arranged through hole is provided with a rotational acceleration structure that increases the rotational speed of the grinding media.

[0005] Furthermore, the dispersion wheel includes radial blind holes between adjacent radial through holes, each radial blind hole having a circulation hole aligned with the axial direction, and the acceleration surface of the radial blind hole having another rotation acceleration structure to increase the rotation speed of the grinding media.

[0006] Furthermore, the self-rotation acceleration structure includes a sawtooth-shaped acceleration groove or bar.

[0007] Furthermore, the acceleration groove or bar is not parallel to the acceleration direction of the grinding ball.

[0008] Furthermore, the acceleration groove or bar is perpendicular to the acceleration direction of the grinding ball.

[0009] Furthermore, the accelerating surface is a radial through hole that drives the grinding ball to move when the dispersing wheel rotates.

[0010] Furthermore, the acceleration surface is one side of the radial blind hole that drives the grinding ball to move when the dispersing wheel rotates.

[0011] Furthermore, the radial through hole has a circulation hole in the axial direction.

[0012] Furthermore, at least the circumferential side surface between the radial circulation hole and the circumferential edge of the dispersion wheel is an acceleration surface.

[0013] Furthermore, at least one radial through hole is provided between adjacent radial blind holes.

[0014] Furthermore, when there are two or more radial through holes between adjacent radial blind holes, the outlet of each radial through hole between the two radial blind holes is independent or shared, and the inlet of adjacent radial through holes is independent or shared.

[0015] Furthermore, the circulation holes on the radial through-hole are located on the same circle centered on the center of the dispersion wheel.

[0016] Furthermore, the circulation holes on the radial blind hole are located on the same circle centered on the center of the dispersion wheel.

[0017] This invention discloses a ball mill device that generates radial rotational acceleration, comprising a grinding cylinder with a grinding chamber and a rotating shaft disposed within the grinding cylinder. One end of the rotating shaft, located outside the grinding cylinder, is connected to a drive mechanism, while the other end, located inside the grinding chamber, is provided with a grinding and dispersing mechanism. This mechanism includes a dispersing wheel with a plurality of radially uniformly arranged through holes. Each radial through hole communicates with a central through hole on the dispersing wheel. The accelerating surface of the radial through holes is provided with a rotational acceleration structure that increases the rotational speed of the grinding media. During operation, when the grinding balls and materials leave the dispersing wheel through the accelerating surface within the radial through holes, both displacement velocity and high-speed rotational velocity are generated. Because the grinding balls generate high-speed rotational velocity, the stability of their movement direction is ensured, increasing their energy. On the one hand, this allows the grinding balls to move further, reducing grinding dead zones; on the other hand, the high-speed rotational velocity of the grinding balls increases the contact between the grinding balls and materials during interaction, improving grinding efficiency. Furthermore, the increased movement distance increases the contact opportunities between the grinding balls and materials, further improving grinding efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the description only show some embodiments of the present invention, and therefore should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic cross-sectional view of an embodiment of the ball mill device along its orientation.

[0020] Figure 2 This is a schematic diagram of the exploded structure of the first embodiment of the dispersion wheel.

[0021] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0022] Figure 4 This is a perspective view of the first embodiment along the direction perpendicular to the axis of rotation of the dispersion wheel.

[0023] Figure 5 This is a perspective view of the second embodiment along the direction perpendicular to the axis of rotation of the dispersion wheel.

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the second embodiment.

[0025] Figure 7 This is a perspective view of the third embodiment along the direction perpendicular to the axis of rotation of the dispersion wheel.

[0026] Figure 8 This is a perspective view of the fourth embodiment along the direction perpendicular to the axis of rotation of the dispersion wheel.

[0027] The following description, in conjunction with embodiments and the accompanying drawings, further illustrates the realization of the objectives, functional characteristics, and advantages of the present invention. Detailed Implementation

[0028] The claims of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of the present invention.

[0029] It should be understood that, in the description of the embodiments of the present invention, all directional indicating terms, such as "up," "down," "left," "right," "front," and "back," indicate the orientation or positional relationship based on the orientation and positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product is in use. These terms are merely for the purpose of simplifying the description of the present invention and do not explicitly or implicitly suggest that the device, element, or component referred to must have a specific orientation or specific orientational structure, and should not be construed as a limitation of the present invention. They are only used to explain the relative positional relationships and movements between the components shown in the accompanying drawings. When this specific orientation changes, the directional indication may also change accordingly.

[0030] Furthermore, in this invention, ordinal numbers such as "first" and "second" are used for distinguishing purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features referred to as "first" and "second" may explicitly or implicitly include at least one of those technical features. In the description of this invention, "a plurality of" means at least two, i.e., two or more, unless otherwise explicitly defined; "at least one" means one or more.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "screw-in" should be interpreted broadly. For example, they can refer to a relatively fixed positional relationship between components, or a physically fixed connection between components; they can be detachable connections or integral structures; they can be mechanical connections or electrical signal connections; they can be direct connections or indirect connections through intermediate media or components; they can refer to the internal communication of two elements or the interaction between two elements. Unless otherwise explicitly limited in the specification, other interpretations will not achieve the corresponding functions or effects. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0032] If the controllers or control circuits involved in this invention are conventional control technologies or units for those skilled in the art, such as the control circuits of the controllers, they can be implemented by those skilled in the art using existing methods, such as simple programming. Regarding software or programs that work with hardware to achieve control results, unless the description provides a detailed explanation of the control process of the software or programs involved, this pertains to the use of existing technology or conventional techniques for those skilled in the art. The power supply also employs existing technology in the art. Furthermore, since the main inventive aspect of this invention lies in the improvement of the mechanical device, this invention will not provide a detailed explanation of the specific circuit control relationships and circuit connections.

[0033] This invention discloses many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described herein. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0035] like Figure 1 - Figure 8 As shown, the present invention provides an embodiment of a ball mill device that generates radial rotational acceleration.

[0036] The radially accelerated rotational ball mill device includes a grinding cylinder B1 with a grinding chamber and a rotating shaft 2 located on the grinding cylinder B1. One end of the rotating shaft 2 outside the grinding cylinder B1 is connected to a drive mechanism A, and the other end located inside the grinding chamber B2 is provided with a grinding dispersion mechanism 1. The grinding dispersion mechanism includes a dispersion wheel 1, which has a plurality of radially uniformly arranged through holes 104A. Each radial through hole 104A is connected to a central through hole 12. Radial blind holes 103A are provided between two adjacent radial through holes 104A. Each radial through hole 104A and radial blind hole 103A is provided with a circulation hole 102 aligned with the axial direction. A rotation acceleration structure to increase the rotation speed of the grinding media is provided on the acceleration surface C of the radial through holes 104A and / or the radial blind holes 103A. The dispersion wheel 1 can be one or more connected in series on the rotating shaft 2 and driven synchronously by the rotating shaft.

[0037] Specifically, the ball milling device includes a grinding cylinder B1 forming a grinding chamber B2 and a rotating shaft 2 located at one end of the grinding cylinder B1 and connected to an external motor A1. At least one dispersing wheel 1 is provided at the other end of the rotating shaft 2 located in the grinding chamber B2. The dispersing wheel 1 is provided with a central through hole 12 for the rotating shaft 2 to pass through and fixing holes 13 distributed around the central through hole 12 to fix the dispersing wheel 1 and the rotating shaft 2.

[0038] The acceleration surface C can be set on the radial through hole 104A and the radial blind hole 103A, or it can be set on the acceleration surface C of the radial through hole 104A or the radial blind hole 103A. The acceleration surface C is a side of the radial blind hole 103A and / or the radial through hole 104A that pushes the grinding ball to move when the dispersing wheel 1 rotates, so that the grinding ball can be pushed to move when the dispersing wheel 1 is working and rotating.

[0039] Multiple dispersing wheels, also known as turbines, can be used depending on the grinding efficiency. To reduce manufacturing difficulty, they are typically assembled from two dispersing plates with mirror-like structures, or they can be formed by fixing a single dispersing plate to a side plate (not shown in the attached diagram). Of course, a one-piece molding method can also be used if cost is not a concern. The following explanation uses a dispersing wheel formed by assembling two mirror-like dispersing plates as an example.

[0040] The dispersing wheel 1 includes a first dispersing plate 10 and a second dispersing plate 11, with identical structures. The first dispersing plate 10 has multiple first radial through grooves 104 and multiple first radial blind grooves 103. Each first radial blind groove 103 is formed by V-shaped spacers 105, and the first radial through grooves 104 and first radial blind grooves 103 are spaced apart. Each first radial blind groove 103 has a first axial hole 102. The second dispersing plate 11 has multiple second radial through grooves 114 and multiple second radial blind grooves 113. Each second radial blind groove 113 is formed by V-shaped spacers 115, and the second radial through grooves 114 and second radial blind grooves 113 are spaced apart. Each second radial blind groove 113 has a second axial hole 112. When the two dispersion plates are fixed together, the first radial blind groove 103 and the second radial blind groove 113 form a radial blind hole 15, the first radial through groove 104 and the second radial through groove 114 form a radial through hole 13, and the first axial hole 102 and the second axial hole 112, which are respectively connected to the radial blind hole 15, form a circulation hole 14. The radial through hole 104A may include a first radial through groove 104, or the first dispersion piece 10 and the second dispersion piece 11 may be fixed by bolts through fixing holes 13 to form a first radial through groove 104 that mates with a corresponding second radial through groove 114. The radial blind hole 103A may include a first radial blind groove 103, or the first dispersion piece 10 and the second dispersion piece 11 may be fixed by bolts through fixing holes 13 to form a first radial blind groove 103 that mates with a corresponding second radial blind groove 113. The first radial blind groove 103 and the second radial blind groove 113 refer to those that do not communicate with the central through hole 12 radially on the dispersion wheel, but communicate with the outer edge of the dispersion wheel. The first radial through groove 104 refers to those that communicate with the central through hole 12 radially on the first dispersion piece 10. The first radial through groove 114 refers to those that communicate with the central through hole 12 radially on the second dispersion piece 11. The first radial blind groove 103 may also be provided with a blind groove acceleration surface 1031, on which a blind groove rotation acceleration structure 1031 is provided. The first radial through groove 104 is provided with a through groove acceleration surface 1041, on which a through groove rotation acceleration structure 1051 is provided. After the radial blind hole 15 and the radial through hole 14 are formed, the blind groove rotation acceleration structure 1031 and the through groove rotation acceleration structure 1051 of the two dispersion plates are formed in the radial blind hole 15 and the radial through hole 13, respectively. During the acceleration of the grinding ball, they not only generate a moving speed, but also generate rotation.

[0041] During operation, the dispersing wheel 1 rotates at high speed. The grinding balls and material mixture enter the radial blind hole 15 and / or radial through hole 13 through the circulation hole 14. Typically, the diameter of the grinding balls is slightly larger than the diameter of the material. The acceleration surfaces of the radial blind hole 15 and / or radial through hole 13 accelerate both the grinding balls and the material, increasing their displacement velocity and generating a significant rotational velocity. When the grinding balls and material mixture leave the dispersing wheel 1, they exhibit substantial rotational and moving speeds, which have a greater effect when in contact with grinding balls and materials in other flow paths, facilitating grinding and improving grinding efficiency. Simultaneously, the rotation of the grinding balls enhances their displacement and stabilizes their direction of motion. The moving speed and rotational speed of the grinding balls are positively correlated with the length of the acceleration surface and also with the rotational speed of the dispersing wheel during operation.

[0042] The self-rotating acceleration structure includes serrated acceleration grooves, strips, or rough surfaces on the acceleration surfaces of the radial through-hole 13 and / or radial blind hole 15. The acceleration grooves or strips are not parallel to the acceleration direction of the grinding ball, and can typically be set perpendicular to it to reduce energy loss during acceleration. The acceleration surface is one circumferential side of the radial through-hole 13 and / or radial blind hole 15, which is the facing surface of the dispersing wheel's rotation.

[0043] To reduce energy loss during acceleration, the radial through-hole 13 and / or radial blind hole 15 are arc-shaped, and the curvature of this arc is related to the rotational speed of the dispersion wheel. The radial blind hole 15 gradually increases in size in the circumferential direction along the radial direction to the edge of the dispersion wheel; the radial through-hole 13 also gradually increases in size in the circumferential direction along the radial direction to the edge of the dispersion wheel.

[0044] As needed, two or more radial through holes 13 can be provided between two adjacent radial blind holes 15. Each radial through hole 13 has an independent through hole outlet, and the through hole inlets 16 of adjacent radial through holes 13 are independent or shared.

[0045] The above embodiment employs a circulation hole 14 on the radial blind hole 15, such as... Figure 4 and 5 As shown, the present invention also provides a method in which circulation holes 14 are provided in radial through holes 13 and radial blind holes 15 respectively, and an acceleration structure is also provided in radial through holes 13. Other structures remain unchanged, and the above-mentioned objectives can also be achieved. No further details will be provided.

[0046] The above embodiment employs a circulation hole 14 on the radial blind hole 15, such as... Figure 4 and 5As shown, the present invention also provides a method in which circulation holes 14 are provided in radial through holes 13 and radial blind holes 15 respectively, and an acceleration structure is also provided in radial through holes 13. Other structures remain unchanged. This method can also achieve the above-mentioned purpose of making the grinding ball generate moving speed and rotation speed during the acceleration process, thereby improving the grinding efficiency. Further details are omitted.

[0047] As needed, the dispersing wheel 1 is provided with only a plurality of evenly arranged independent radial blind holes 15, each radial blind hole 15 is provided with a circulation hole 14, and each radial blind hole 15 may be provided with or partially provided with a rotation acceleration structure, and other structures Figure 6 As shown, other structures are the same as those in the above embodiments, and can also achieve the purpose of increasing the grinding efficiency by making the grinding ball move and rotate during the acceleration process. Further details are omitted.

[0048] As needed, the dispersing wheel 1 is provided with only a plurality of evenly arranged independent radial through holes 13, each radial through hole 13 is provided with a circulation hole 14, and each radial through hole 13 may be provided with or partially provided with a rotation acceleration structure, and other structures Figure 6 As shown, other structures are the same as those in the above embodiments, and can also achieve the purpose of increasing the grinding efficiency by making the grinding ball move and rotate during the acceleration process. Further details are omitted.

[0049] In the above embodiment, the circulation holes 14 on the radial through hole 13 are located on the same circle centered on the center of the dispersing wheel 1. The circulation holes 14 on the radial blind hole 15 are also located on the same circle centered on the center of the dispersing wheel 1. The distances of the circulation holes 14 on the radial through hole 13 from the center of the dispersing wheel 1 are different from those of the circulation holes 14 on the radial blind hole 15, that is, the circles containing the circulation holes 14 on the radial through hole 13 and the circulation holes 14 on the radial blind hole 15 do not coincide. For example, the radius of the circle containing the circulation holes 14 on the radial through hole 13 can be larger than the radius of the circle containing the circulation holes 14 on the radial blind hole 15, or vice versa.

[0050] During operation, when the grinding balls leave the dispersing wheel through the accelerating surfaces within the radial blind holes 15 and / or radial through holes 13, they can generate both a displacement velocity and a high-speed rotation velocity. Because the grinding balls generate a high-speed rotation velocity, the stability of the grinding ball's movement direction can be ensured, allowing it to move a greater distance and reducing grinding dead angles. At the same time, the high-speed rotation velocity of the grinding balls can increase the contact between the grinding balls and the material during interaction, thereby improving grinding efficiency.

[0051] As needed, the dispersing wheel 1 is provided with a pin group (not shown in the attached figure) circumferentially. This pin group includes two pins evenly arranged circumferentially, each pin having a thickness at its front end less than its rear end in the direction of wheel rotation. When there are two pin groups, the axially adjacent pins in each group overlap or misalign along the axis of rotation. A composite grinding zone is provided between the two axially adjacent pins, where the rotational and moving speeds of the grinding balls intertwine with the grinding flow path. The two sides of the two axially adjacent pins that are close to each other are inclined surfaces. These inclined surfaces are provided with friction structures to increase contact friction. The friction structures include multiple racks arranged radially along the dispersing wheel. The two sides of the two axially adjacent pins that are far apart are inclined surfaces or planes. This pin structure can both generate a rotational effect on the grinding balls and, being close to the outlet pipe of the radial through hole 13 and / or radial blind hole 15 of the dispersing wheel, can interact with the grinding balls and materials escaping from the dispersing wheel at their highest speed, thereby further improving grinding efficiency.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions may cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball mill device that generates radial rotational acceleration, characterized in that: The device includes a grinding cylinder with a grinding chamber and a rotating shaft located on the grinding cylinder. One end of the rotating shaft located outside the grinding cylinder is connected to a drive mechanism, and the other end located inside the grinding chamber is provided with a grinding dispersion mechanism. The grinding dispersion mechanism includes a dispersion wheel, which has a plurality of radial through holes uniformly arranged in the radial direction. Each radial through hole is connected to a central through hole on the dispersion wheel. The acceleration surface of the radial through hole is provided with a rotation acceleration structure to increase the rotation speed of the grinding medium.

2. The ball mill apparatus for radially generating self-rotation acceleration according to claim 1, characterized in that: The dispersion wheel includes radial blind holes between adjacent radial through holes, each radial blind hole having a circulation hole aligned with the axial direction, and the acceleration surface of the radial blind hole having another rotation acceleration structure to increase the rotation speed of the grinding media.

3. The ball mill apparatus for radially generating self-rotation acceleration according to claim 1, characterized in that: The self-rotation acceleration structure includes a sawtooth-shaped acceleration groove or bar.

4. The ball mill apparatus for radially generating self-rotation acceleration according to claim 3, characterized in that: The acceleration groove or bar is not parallel to the acceleration direction of the grinding ball.

5. The ball mill apparatus for radially generating self-rotation acceleration according to claim 4, characterized in that: The acceleration groove or bar is perpendicular to the acceleration direction of the grinding ball.

6. The ball mill apparatus for radially generating self-rotation acceleration according to claim 1, characterized in that: The acceleration surface is a radial through hole on one side that drives the grinding ball when the dispersing wheel rotates.

7. The ball mill apparatus for radially generating self-rotation acceleration according to claim 2, characterized in that: The acceleration surface is one side of the radial blind hole that drives the grinding ball to move when the dispersion wheel rotates.

8. The ball mill apparatus for radially generating self-rotation acceleration according to claim 6, characterized in that: The radial through hole has a circulation hole in the axial direction.

9. The ball mill apparatus for radially generating self-rotation acceleration according to claim 8, characterized in that: At least the circumferential side surface between the radial circulation hole and the circumferential edge of the dispersion wheel is an acceleration surface.

10. The ball mill apparatus for radially generating self-rotation acceleration according to claim 2, characterized in that: At least one radial through hole is provided between adjacent radial blind holes.

11. The ball mill apparatus for radially generating self-rotation acceleration according to claim 10, characterized in that: When there are two or more radial through holes between adjacent radial blind holes, the outlet of each radial through hole between the two radial blind holes is independent or shared, and the inlet of adjacent radial through holes is independent or shared.

12. The ball mill apparatus for radially generating self-rotation acceleration according to claim 9, characterized in that: The circulation holes on the radial through-hole are located on the same circle centered on the center of the dispersion wheel.

13. The ball mill apparatus for radially generating self-rotation acceleration according to claim 2, characterized in that: The circulation holes on the radial blind hole are located on the same circle centered on the center of the dispersion wheel.

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