An ink raw material grinding device

Abstract

The application relates to an ink raw material grinding device, belonging to the field of grinding equipment, which comprises a grinding cylinder, a plurality of outer rings, a plurality of inner rings and two driving assemblies, the grinding cylinder is horizontally arranged, the outer rings and the inner rings are coaxially arranged with the grinding cylinder, the inner rings are located on the inner side of the outer rings, the inner rings and the outer rings are axially staggered, the outer rings and the inner rings are provided with waist-shaped holes, the outer rings are connected through first connecting rods, the inner rings are connected through second connecting rods, the outer circumferential surface of the outer rings is provided with outer flow guides, the inner circumferential surface of the inner rings is provided with inner flow guides, the outer rings and the inner rings divide the inner cavity of the grinding cylinder into an outer cavity and an inner cavity, the axial gap between the two outer rings and the axial gap between the two inner rings jointly form a through channel, the two driving assemblies drive the outer rings and the inner rings to rotate around the axis of the grinding cylinder, and the rotating directions of the outer rings and the inner rings are opposite. The application can improve the grinding effect.

Description

Technical Field

[0001] This application relates to the field of grinding equipment, and more particularly to an ink raw material grinding apparatus. Background Technology

[0002] Ink consists of pigments, solvents, functional fillers (such as phosphors, magnetic materials, optical color-changing materials, thermochromic materials, etc.) and special additives, and grinding can disperse and refine the key components in ink, thereby improving ink performance.

[0003] The existing grinding device includes a grinding cylinder, which is horizontal. Inside the grinding cylinder is a grinding tube driven by rotation. The grinding tube is horizontally positioned and has multiple pins on the outside. The outer wall of the grinding tube has multiple waist-shaped holes for the grinding media to move in and out of the inside and outside of the grinding cylinder. The grinding cylinder contains grinding media, such as zirconium beads or steel beads.

[0004] During grinding, the material (ink raw material) is injected into the grinding cylinder. The grinding tube rotates, and the pins on it agitate the material and grinding media. Shearing force, impact force, and friction force are used to overcome the cohesive force between material particles, so as to break and refine the material particles.

[0005] The core element of grinding effect is the combined action of shear force, impact force, and friction force. However, the shear force, impact force, and friction force are mainly applied at the pin, which limits the grinding range and thus the grinding uniformity and crushing effect. Therefore, the grinding effect needs to be improved. Summary of the Invention

[0006] To improve the grinding effect, this application provides an ink raw material grinding apparatus.

[0007] This application provides an ink raw material grinding device, which adopts the following technical solution:

[0008] An ink raw material grinding device includes a grinding cylinder, multiple outer rings, multiple inner rings, and two drive assemblies. The grinding cylinder is horizontally arranged, and the outer and inner rings are coaxially arranged with the grinding cylinder. Each outer and inner ring is spaced apart along the axial direction of the grinding cylinder, with the inner ring located inside the outer rings. The inner and outer rings are axially staggered. Each outer and inner ring has a through-hole. Each outer ring is connected by a first connecting rod, and each inner ring is connected by a second connecting rod. The outer circumferential surface of the outer ring has an outer guide, and the inner circumferential surface of the inner ring has an inner guide. The outer and inner rings divide the inner cavity of the grinding cylinder into an outer cavity and an inner cavity. The inner cavity, in which the axial gap between the two outer rings and the axial gap between the two inner rings together form a passageway; two drive components drive each outer ring and each inner ring to rotate around the axis of the grinding cylinder, and the rotation directions of the outer ring and the inner ring are opposite; when the outer ring and the inner ring rotate, both the outer guide and the inner guide agitate the grinding medium, and the outer guide of the outer ring is used to guide the material at both ends of the outer cavity toward the middle of the grinding cylinder and enter the middle of the inner cavity through the passageway, and the inner guide of the inner ring is used to guide the material in the middle of the inner cavity toward the end of the grinding cylinder and make it enter the two ends of the outer cavity respectively.

[0009] By adopting the above technical solution, when the outer and inner rings rotate, both the outer and inner guide components agitate the grinding media, allowing the grinding media to enter and exit the outer and inner cavities through the waist-shaped holes, ensuring the movement range of the grinding media. Secondly, the outer guide component, with the rotation of the outer ring, guides the material at both ends of the outer cavity towards the middle of the grinding cylinder, while the material gathered in the middle of the grinding cylinder enters the middle of the inner cavity through the passageway. At this time, the inner guide component not only agitates the grinding media, but also guides the material in the middle of the inner cavity towards the end of the grinding cylinder with the rotation of the inner ring, allowing it to enter the two ends of the outer cavity respectively, thus achieving axial circulation of the material in the outer and inner cavities, thereby increasing the movement range of the material. Combined with the high-frequency entry and exit of the grinding media in the outer and inner cavities, the grinding uniformity is improved. Furthermore, the dual-drive outer and inner rings will apply greater kinetic energy, greater shear force, and a higher frequency of shearing impacts to the grinding media and materials, thereby improving the crushing effect on material particles and comprehensively improving the grinding effect.

[0010] In summary, the dual-drive outer and inner rings, combined with the external and internal guide components, enable the material to circulate axially within the outer and inner cavities, thereby increasing the material's movement range. The dual-drive outer and inner rings will apply greater kinetic energy, greater shear force, and a higher frequency of shear impacts to the grinding media and material, thus improving the crushing effect on material particles and comprehensively enhancing the grinding effect.

[0011] Optionally, the outer guide includes multiple outer inclined plates fixed to the outer circumferential surface of the outer ring, with each outer inclined plate spaced apart along the circumferential direction of the outer ring, and the outer inclined plates on both sides of the grinding cylinder axially symmetrically arranged with the cross-section passing through the center of the grinding cylinder as the center; the inner guide includes multiple inner inclined plates fixed to the inner circumferential surface of the inner ring, with each inner inclined plate spaced apart along the circumferential direction of the inner ring, and the inner inclined plates on both sides of the grinding cylinder axially symmetrically arranged with the cross-section passing through the center of the grinding cylinder as the center.

[0012] Optionally, the outer inclined plates of two adjacent outer rings are circumferentially offset, and the outer guide further includes a plurality of outer agitators fixed to the outer circumferential surface of the outer ring, with the outer agitators located between two adjacent outer inclined plates; the inner inclined plates of two adjacent inner rings are circumferentially offset, and the inner guide further includes a plurality of inner agitators fixed to the inner circumferential surface of the inner ring, with the inner agitators located between two adjacent inner inclined plates.

[0013] Optionally, the drive assembly includes a turntable, a drive motor, and a rotating shaft. The inner walls at both ends of the grinding cylinder are recessed and formed with rotating grooves. The turntables of the two drive assemblies are respectively sealed and rotated with the two rotating grooves. The drive motors of the two drive assemblies drive the turntables to rotate through the rotating shafts. Each of the first connecting rods and each of the second connecting rods are evenly arranged circumferentially. Both the first connecting rod and the second connecting rod are U-shaped. The two straight segments of the first connecting rod are located at different radial positions of the grinding cylinder, and the two straight segments of the second connecting rod are located at different radial positions of the grinding cylinder. The first connecting rod passes through the outer ring, and the second connecting rod passes through the inner ring. The end of the first connecting rod is fixed to the surface of one of the turntables, and the end of the second connecting rod is fixed to the surface of the other turntable.

[0014] Optionally, a cooling assembly is also included. Both the first connecting rod and the second connecting rod are U-shaped tubular structures. The inner cavities of the first connecting rod and the second connecting rod are named cooling channels. The cooling channels have an inlet and an outlet. The disc surface opposite to the center of the grinding cylinder is provided with an annular first channel and a second channel. The diameter of the second channel is smaller than the diameter of the first channel. The inlet of the cooling channel is connected to the first channel, and the outlet of the cooling channel is connected to the second channel. The cooling assembly includes a delivery pump, an inlet pipe, and an outlet pipe. The inlet pipe is connected to the first channel, and the outlet pipe is connected to the second channel. The delivery pump is used to introduce cooling water into the inlet pipe.

[0015] Optionally, the opposite surfaces of two adjacent outer rings and the opposite surfaces of two adjacent inner rings are provided with annular mounting grooves, and the straight sections of the first connecting rod and the second connecting rod are fitted with protective springs. The diameter of the protective springs is larger than the diameter of the first connecting rod and the second connecting rod, and the two ends of the protective springs extend into the mounting grooves respectively.

[0016] Optionally, an axial spring is fitted onto the straight section of the second connecting rod, with both ends of the axial spring abutting against the opposite surfaces of two adjacent inner rings. The outer ring is fixedly connected to the first connecting rod, and the inner ring slides axially with the second connecting rod. A limit ring is coaxially fixed on one side of the outer circumference of the inner ring, and a return spring is fitted onto the portion of the second connecting rod located in the passageway, with both ends of the return spring abutting against the sides of two adjacent inner rings. In the initial stage of grinding, the inner and outer rings overlap axially, the outer ring rotates, and the inner ring does not rotate. In the later stage of grinding, both the outer and inner rings rotate in opposite directions. Driven by the reaction force of the material, the inner guide component causes the inner ring to slide axially toward the center of the grinding cylinder. The return spring is compressed, the inner and outer rings are axially misaligned, and the limit ring abuts against the side of the outer ring.

[0017] Optionally, there is a radial clearance gap between the outer ring and the inner ring; both the outer ring and the inner ring are composed of multiple circumferentially abutting blocks, and each of the first connecting rods and each of the second connecting rods slides through the corresponding block; the portion of the first connecting rod and the second connecting rod near the turntable is designated as a deformable part, which is curved; the straight segments of the first connecting rod and the second connecting rod are each fitted with an axial spring, and the two ends of the axial spring abut against the opposite surfaces of two adjacent blocks.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. Through the dual-drive outer and inner rings, combined with the outer and inner guide components, the material circulates axially in the outer and inner cavities, thereby increasing the material's movement range. The dual-drive outer and inner rings will apply greater kinetic energy, greater shear force, and a higher frequency of shear impacts to the grinding media and material, thereby improving the crushing effect on material particles and comprehensively improving the grinding effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0021] Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1.

[0022] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This is a schematic diagram of the outer ring of Example 1.

[0024] Figure 5 This is a schematic diagram of the inner ring of Example 1.

[0025] Figure 6This is a cross-sectional view of the overall structure of Embodiment 2.

[0026] Figure 7 yes Figure 6 A magnified view of a section at point B.

[0027] Figure 8 yes Figure 6 A magnified view of a section at point C.

[0028] Figure 9 This is a partial cross-sectional view of Example 3 used to illustrate the outer and inner ring structures.

[0029] Figure 10 This is a partial cross-sectional view of Example 4, used to show the overlap of the outer and inner rings.

[0030] Figure 11 This is a partial cross-sectional view of Example 4 used to illustrate the axial misalignment of the outer and inner rings.

[0031] Figure 12 This is a schematic diagram of the outer ring of Example 5.

[0032] Figure 13 This is a schematic diagram of Example 6 illustrating the states of the outer and inner rings at low speeds.

[0033] Figure 14 This is a schematic diagram of Example 6 illustrating the states of the outer and inner rings at high speeds.

[0034] Explanation of reference numerals in the attached drawings: 1. Outer ring; 2. Inner ring; 3. First connecting rod; 4. Second connecting rod; 5. Turntable; 10. Grinding cylinder; 100. Machine base; 101. Feed pipe; 102. Discharge pipe; 110. Outer cavity; 120. Inner cavity; 130. Passageway; 11. Outer inclined plate; 12. Outer stirring plate; 13. Waist-shaped hole; 14. Limiting groove; 15. Segment; 21. Inner inclined plate; 22. Inner stirring plate; 23. Limiting ring; 31. Cooling channel; 32. Protective spring; 33. Mounting groove; 34. Axial spring; 35. Return spring; 36. Deformable part; 37. Limiting convex ring; 51. Rotating shaft; 511. First channel; 512. Second channel; 513. Sealing ring; 52. Rotating groove; 61. Liquid inlet pipe; 62. Liquid outlet pipe; 200. Cooling circulation device. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 -Appendix Figure 14 This application will be described in further detail.

[0036] Example 1: Example 1 discloses an ink raw material grinding apparatus. (Refer to...) Figure 1 and Figure 2The ink raw material grinding device includes a base 100, a grinding cylinder 10, multiple outer rings 1, multiple inner rings 2, multiple first connecting rods 3, multiple second connecting rods 4, and two drive components. The grinding cylinder 10 is mounted on the base 100, and its axis is horizontal, i.e., the grinding cylinder 10 is horizontal. The two ends of the grinding cylinder 10 are respectively provided with a feed pipe 101 and a discharge pipe 102 for material to enter and exit. In order to improve the filtration effect, filter screens can also be installed at the feed pipe 101 and the discharge pipe 102.

[0037] like Figure 3 , Figure 4 , Figure 5 As shown, both the outer ring 1 and the inner ring 2 are coaxially arranged with the grinding cylinder 10. Each outer ring 1 and each inner ring 2 are arranged at intervals along the axial direction of the grinding cylinder 10, and the inner ring 2 and the outer ring 1 are arranged in an axially staggered manner. The inner ring 2 is located inside the outer ring 1. In this embodiment, the outer diameter of the inner ring 2 is equal to the inner diameter of the outer ring 1. In other embodiments, the outer diameter of the inner ring 2 is smaller than the inner diameter of the outer ring 1. The outer ring 1 and the inner ring 2 divide the inner cavity 120 of the grinding cylinder 10 into an outer cavity 110 and an inner cavity 120. The axial gap between the two outer rings 1 and the axial gap between the two inner rings 2 together form the passageway 130.

[0038] like Figure 4 , Figure 5 As shown, both the outer ring 1 and the inner ring 2 are provided with multiple waist-shaped holes 13. The waist-shaped holes 13 extend circumferentially along the outer ring 1 and the inner ring 2. The waist-shaped holes 13 are used to allow grinding media and some materials to enter and exit the outer cavity 110 and the inner cavity 120.

[0039] In this embodiment, the first connecting rod 3 is a solid rod, and the first connecting rod 3 is parallel to the axis of the grinding cylinder 10. The first connecting rods 3 are evenly arranged around the axis of the grinding cylinder 10. The outer rings 1 are connected by the first connecting rods 3. In this embodiment, the first connecting rod 3 is fixed to each outer ring 1. The first connecting rod 3 is U-shaped. The two straight segments of the first connecting rod 3 are located at different radial positions of the grinding cylinder 10 (the straight segments refer to the smooth rod part of the first connecting rod 3). The end of the first connecting rod 3 is fixed to the driving end of one of the driving components (the driving component is located inside the base 100). That is, the driving component can transmit torque to the outer ring 1 through the first connecting rod 3 to drive the outer ring 1 to rotate.

[0040] The outer circumferential surface of the outer ring 1 is provided with an external guide component. Specifically, the external guide component includes multiple outer inclined blades 11 fixed to the outer circumferential surface of the outer ring 1 and multiple outer stirring blades 12 fixed to the outer circumferential surface of the outer ring 1. The outer inclined blades 11 are arranged at intervals along the circumference of the outer ring 1, and the outer inclined blades 11 of two adjacent outer rings 1 are staggered circumferentially. The outer inclined blades 11 on both sides of the grinding cylinder 10 are symmetrically arranged with the cross-section passing through the center of the grinding cylinder 10 as the center. The outer stirring blades 12 are located between two adjacent outer inclined blades 11.

[0041] In this embodiment, the second connecting rod 4 is a solid rod, parallel to the axis of the grinding cylinder 10. The second connecting rods 4 are evenly arranged circumferentially around the axis of the grinding cylinder 10. Each inner ring 2 is connected via the second connecting rod 4. In this embodiment, the second connecting rod 4 passes through and is fixed to each inner ring 2. The second connecting rod 4 is U-shaped, with its two straight segments located at different radial positions on the grinding cylinder 10 (the straight segments refer to the smooth rod portion of the second connecting rod 4). The end of the second connecting rod 4 is fixed to the driving end of one of the driving components. That is, the driving component can transmit torque to the inner ring 2 through the second connecting rod 4 to drive the inner ring 2 to rotate. In other words, the two driving components drive each outer ring 1 and each inner ring 2 to rotate around the axis of the grinding cylinder 10 via the first connecting rod 3 and the second connecting rod 4, respectively, with the outer ring 1 and inner ring 2 rotating in opposite directions.

[0042] The inner circumferential surface of the inner ring 2 is provided with an inner guide component. Specifically, the inner guide component includes multiple inner inclined blades 21 fixed to the inner circumferential surface of the inner ring 2 and multiple inner stirring blades 22 fixed to the inner circumferential surface of the inner ring 2. The inner inclined blades 21 are arranged at intervals along the circumference of the inner ring 2, and the inner inclined blades 21 of two adjacent inner rings 2 are staggered circumferentially. The inner inclined blades 21 on both sides of the grinding cylinder 10 are symmetrically arranged with the cross-section passing through the center of the grinding cylinder 10 as the center. The inner stirring blades 22 are located between two adjacent inner inclined blades 21.

[0043] The drive assembly includes a turntable 5, a drive motor, and a rotating shaft 51 (the drive motor is not shown in the figure). The inner walls of both ends of the grinding cylinder 10 are recessed and formed with rotating grooves 52. The turntables 5 of the two drive assemblies are respectively sealed and rotatably engaged with the two rotating grooves 52. The rotating shaft 51 is coaxially fixed with the turntables 5 and rotatably engaged with the ends of the grinding cylinder 10 via bearings. The drive motors of the two drive assemblies drive the turntables 5 to rotate via the rotating shafts 51. The output shafts of the drive motors can be directly fixed to the rotating shafts 51, or the output shafts of the drive motors can transmit torque to the rotating shafts 51 through other transmission structures.

[0044] The end of the first connecting rod 3 is fixed to the surface of one of the turntables 5, and the end of the second connecting rod 4 is fixed to the surface of the other turntable 5.

[0045] The implementation principle of Example 1 is as follows: When the outer ring 1 and the inner ring 2 rotate in opposite directions, both the outer and inner guide members agitate the grinding medium, allowing the grinding medium to enter and exit the outer cavity 110 and the inner cavity 120 through the waist-shaped hole 13, thus ensuring the movement range of the grinding medium. Furthermore, the outer guide member, as the outer ring 1 rotates, guides the material at both ends of the outer cavity 110 towards the center of the grinding cylinder 10. Figure 2The direction of the middle arrow indicates the material flow direction. The material gathered in the middle of the grinding cylinder 10 will enter the middle of the inner cavity 120 through the passage 130. At this time, the inner guide not only agitates the grinding medium, but also guides the material in the middle of the inner cavity 120 towards the end of the grinding cylinder 10 as the inner ring 2 rotates, causing it to enter the two ends of the outer cavity 110 respectively. Figure 2 The direction of the middle arrow indicates the material flow direction, which allows the material to circulate axially in the outer cavity 110 and the inner cavity 120, thereby increasing the material's movement range. Combined with the high-frequency grinding media entering and exiting the outer cavity 110 and the inner cavity 120, the grinding uniformity is improved.

[0046] Furthermore, the dual-drive outer ring 1 and inner ring 2 will apply greater kinetic energy, greater shear force, and a higher frequency of shear impacts to the grinding media and materials, thereby improving the crushing effect on material particles and comprehensively improving the grinding effect.

[0047] Furthermore, due to the axial misalignment of the outer ring 1 and the inner ring 2, when the grinding medium in the outer cavity 110 enters the inner cavity 120 through the waist-shaped hole 13 of the inner ring 2, the inner stirring plate 22 and the inner inclined plate 21 of the inner ring 2 will collide with the grinding medium first, thereby applying kinetic energy to the grinding medium again and changing the direction of movement of the grinding medium, thereby improving the grinding effect of the grinding medium in the inner cavity 120.

[0048] Secondly, the grinding cylinder 10 can also be provided with an inner jacket (not shown in the figure). Cooling circulating water is introduced into the jacket of the grinding cylinder 10 by the cooling circulation device 200 (the cooling circulation device 200 is existing technology and will not be described in detail here), thereby cooling the grinding cylinder 10 and reducing the occurrence of excessive temperature rise inside the grinding cylinder 10 due to collision grinding, which would affect the performance of the material.

[0049] Example 2: The difference between Example 2 and Example 1 is that, as Figure 6 , Figure 7 , Figure 8 As shown, the ink raw material grinding device also includes a cooling component. The first connecting rod 3 and the second connecting rod 4 are both U-shaped tubular structures. The inner cavity 120 of the first connecting rod 3 and the inner cavity 120 of the second connecting rod 4 are both named cooling channels 31. The two ends of the cooling channels 31 are the inlet and the outlet, respectively. The rotating disk 5 has an annular first channel 511 and a second channel 512 coaxially formed on the disk surface away from the middle of the grinding cylinder 10. The diameter of the second channel 512 is smaller than the diameter of the first channel 511. The ends of the first connecting rod 3 and the second connecting rod 4 are respectively inserted and fixed to the two rotating disks 5, so that the inlet of the cooling channel 31 is connected to the first channel 511 and the outlet of the cooling channel 31 is connected to the second channel 512.

[0050] Furthermore, multiple sealing rings 513 are provided at the mating position between the turntable 5 and the rotating groove 52 to reduce crossflow between the first flow channel 511 and the second flow channel 512.

[0051] The cooling assembly includes a delivery pump, an inlet pipe 61, and an outlet pipe 62 (the delivery pump is not shown in the figure). Both the inlet pipe 61 and the outlet pipe 62 are fixed to the end of the grinding cylinder 10. The inlet pipe 61 is connected to the first flow channel 511, and the outlet pipe 62 is connected to the second flow channel 512. The delivery pump is used to introduce cooling water into the inlet pipe 61. The cooling water can enter the cooling flow channel 31 through the annular first flow channel 511. The annular first flow channel 511 ensures that the inlet pipe 61 is connected to the cooling flow channel 31 in real time during the rotation of the turntable 5. The cooling water in the cooling flow channel 31 can exchange heat with the material, outer ring 1, and inner ring 2 in the grinding cylinder 10 to achieve heat dissipation and cooling. The water after heat exchange enters the second flow channel 512 through the outlet of the cooling flow channel 31 and is discharged from the outlet pipe 62. The annular second flow channel 512 ensures that the cooling flow channel 31 is connected to the outlet pipe 62 in real time during the rotation of the turntable 5.

[0052] The cooling water flowing into the cooling channel 31 can exchange heat with the material, outer ring 1, and inner ring 2 inside the grinding cylinder 10 in a timely manner, resulting in higher heat exchange efficiency and efficient heat dissipation and cooling. This reduces the possibility of excessive temperature rise inside the grinding cylinder 10 due to collision and grinding, which could affect the performance of the material.

[0053] Example 3: The difference between Example 3 and Example 2 is that, as Figure 9 As shown, annular mounting grooves 33 are provided on the opposite surfaces of two adjacent outer rings 1 and the opposite surfaces of two adjacent inner rings 2. The mounting grooves 33 are coaxially arranged with the straight segments of the corresponding first connecting rod 3 or the second connecting rod 4. Protective springs 32 are sleeved on the straight segments of the first connecting rod 3 and the second connecting rod 4. The diameter of the protective springs 32 is larger than the diameter of the first connecting rod 3 and the second connecting rod 4. The two ends of the protective springs 32 extend into the mounting grooves 33 to fix the protective springs 32.

[0054] First, the spiral gap of the protective spring 32 allows material to pass through, thus facilitating heat dissipation from the cooling channel 31. Second, the protective spring 32 is elastic and can play a protective role. The protective spring 32 can buffer the high-speed moving grinding media and change the reflection angle of the grinding media to a certain extent, so as to reduce the direct collision of the grinding media with the first connecting rod 3 and the second connecting rod 4, which would cause damage to the first connecting rod 3 and the second connecting rod 4.

[0055] Furthermore, the helical gap of the protective spring 32 can be selected according to the particle size of the grinding media, thereby adjusting the rejection rate of the grinding media.

[0056] Example 4: Example 4 differs from Example 1 or Example 2 in that, as Figure 10 , Figure 11 As shown, the outer ring 1 is fixedly connected to the first connecting rod 3, and the inner ring 2 is axially slidingly fitted to the second connecting rod 4. A limiting ring 23 is coaxially fixed on one side of the outer circumferential surface of the inner ring 2, and a limiting groove 14 adapted to the limiting ring 23 is coaxially opened on one side of the inner circumferential surface of the outer ring 1. The limiting groove 14 is annular.

[0057] An axial spring 34 is fitted onto the straight section of the second connecting rod 4, with both ends of the axial spring 34 abutting against the opposite surfaces of two adjacent inner rings 2. Furthermore, a return spring 35 is fitted onto the portion of the second connecting rod 4 located in the passageway 130, with both ends of the return spring 35 abutting against the sides of two adjacent inner rings 2.

[0058] In the early or middle stages of grinding, the inner ring 2 and the outer ring 1 overlap axially (see...). Figure 10 At this time, the limiting ring 23 is located in the limiting groove 14, and the return spring 35 is in the normal state to maintain the axial position of the inner ring 2 and ensure that the inner ring 2 and the outer ring 1 overlap axially. At this time, only one of the driving components drives each outer ring 1 to rotate, while the inner ring 2 does not rotate. That is, only the outer guide of the outer ring 1 agitates the grinding medium and forces the material to circulate axially. During this process, the material flow rate is relatively slow, and the collision kinetic energy and movement range of the grinding medium are relatively small. It is mainly suitable for the initial crushing and refining of material particles. Combined with the axial circulation of the material, the crushed particles can be gradually evenly distributed in the grinding cylinder 10. Furthermore, since the collision kinetic energy of the grinding medium is relatively small, the temperature rise can be reduced, thereby reducing the occurrence of excessive heat accumulation in the grinding cylinder 10 due to long-term grinding.

[0059] During the later or mid-to-late stages of grinding, both the outer ring 1 and the inner ring 2 rotate in opposite directions. Since the inner ring 2 can slide axially along the second connecting rod 4 and the inner guide itself exerts an axial driving force on the material in the inner cavity 120, the inner guide, driven by the reaction force of the material, causes the inner ring 2 to slide axially toward the center of the grinding cylinder 10. At this time, the return spring 35 is compressed, and the limiting ring 23 moves away from the limiting groove 14 and abuts against the side of the other outer ring 1 (see...). Figure 11At this point, the inner ring 2 and the outer ring 1 are axially misaligned. In this state, the dual-drive outer ring 1 and inner ring 2, combined with the outer and inner guide components, can accelerate the axial circulation speed of the material. At the same time, the collision kinetic energy of the grinding media is greatly increased, and the movement trajectory of the grinding media is more varied, increasing the movement range of the grinding media. This greatly accelerates the crushing and grinding of material particles, further refining the grinding process. Furthermore, in the early stage of grinding, under the premise that the material particles have been initially crushed and evenly diffused, and the heat is well maintained, the time cycle for the dual-drive outer ring 1 and inner ring 2 to run and refine the grinding process can be set to a relatively short period of time. This reduces the occurrence of excessively high temperature rise caused by high kinetic energy collisions in this stage, thus balancing material grinding and material stability under low temperature rise.

[0060] In other embodiments, a chamfer can be provided at the edge of the inner circumferential surface of the outer ring 1 or the edge of the outer circumferential surface of the inner ring 2, or a radial gap can be provided between the outer ring 1 and the inner ring 2, thereby reducing the occurrence of axial slippage and jamming of the inner ring 2.

[0061] Example 5: Example 5 differs from Example 1 or Example 2 in that, as Figure 12 , Figure 13 As shown, there is a radial clearance between the outer ring 1 and the inner ring 2; both the outer ring 1 and the inner ring 2 are composed of multiple circumferentially abutting blocks 15, and each first connecting rod 3 and each second connecting rod 4 slides through the corresponding block 15, that is, the block 15 can slide axially relative to the first connecting rod 3 or the second connecting rod 4.

[0062] The portion of the first connecting rod 3 and the second connecting rod 4 near the turntable 5 is designated as a deformable part 36, which is curved.

[0063] The straight sections of the first connecting rod 3 and the second connecting rod 4 are each fitted with an axial spring 34. The two ends of the axial spring 34 abut against the opposite surfaces of two adjacent blocks 15. Furthermore, the first connecting rod 3 and the second connecting rod 4 are also fixed with a limiting protrusion ring 37. The axial spring 34 located at the end of the first connecting rod 3 or the second connecting rod 4 abuts against the limiting protrusion ring 37.

[0064] The elastic force of the axial spring 34 is used to maintain the axial position of the block 15.

[0065] The implementation principle of this embodiment is as follows: at low speed (see...) Figure 12 and Figure 13 In this state, the outer ring 1 and inner ring 2 are axially misaligned, and adjacent blocks 15 abut against each other to efficiently grind the material particles. At high speeds (see...), Figure 14In this state, the centrifugal force on the segment 15 located at the end of the first connecting rod 3 or the second connecting rod 4 is relatively large. Due to the cantilever effect of the first connecting rod 3 and the second connecting rod 4, the large centrifugal force will force the first connecting rod 3 and the second connecting rod 4 to deflect radially outward at a certain angle with the deformable part 36 as the center. That is, the first connecting rod 3 and the second connecting rod 4 are tilted, and the adjacent segments 15 are separated from each other. At this time, the stirring range of the segment 15 is further increased. At the same time, since the angular velocity of the turntable 5 remains unchanged, while the radial distance of the segment 15 relative to the axis of the grinding cylinder 10 increases, the linear velocity of the segment 15 increases, the stirring power and the kinetic energy of the grinding medium are further increased, thereby improving the grinding effect. Secondly, the radial distance of the segment 15 at each axial position relative to the axis of the grinding cylinder 10 is different, that is, the linear velocity of the segment 15 at each axial position is different. The kinetic energy and collision angle of the segment 15 on the grinding medium are different, which makes the movement trajectory of various grinding media more complex and the grinding uniformity is further improved.

[0066] In summary, by intermittently controlling the rotational speed of the two drive components, the first connecting rod 3 and the second connecting rod 4 can be intermittently deformed and deflected, thereby controlling the position of the segment 15, the linear velocity of the segment 15, and the collision angle of the segment 15 with the grinding media, so as to greatly improve the grinding effect.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ink raw material grinding device, characterized in that: The assembly includes a grinding cylinder (10), multiple outer rings (1), multiple inner rings (2), and two drive components. The grinding cylinder (10) is horizontally positioned, and the outer rings (1) and inner rings (2) are coaxially arranged with the grinding cylinder (10). Each outer ring (1) and each inner ring (2) is spaced apart along the axial direction of the grinding cylinder (10). The inner ring (2) is located inside the outer ring (1), and the inner ring (2) and the outer ring (1) are axially staggered. Both the outer ring (1) and the inner ring (2) are provided with a waist-shaped hole (13). Each outer ring (1) is connected by a first connecting rod (3), and each inner ring (2) is connected by a second connecting rod (4). The outer circumferential surface of the outer ring (1) is provided with an outer guide, and the inner circumferential surface of the inner ring (2) is provided with an inner guide. The outer rings (1) and the inner rings (2) divide the inner cavity of the grinding cylinder (10) into an outer cavity (110). The outer ring (1) and the inner cavity (120) together form the passageway (130); the two drive components drive each outer ring (1) and each inner ring (2) to rotate around the axis of the grinding cylinder (10), and the rotation directions of the outer ring (1) and the inner ring (2) are opposite; when the outer ring (1) and the inner ring (2) rotate, the outer guide and the inner guide both agitate the grinding medium, and the outer guide of the outer ring (1) is used to guide the material at both ends of the outer cavity (110) to move toward the middle of the grinding cylinder (10) and enter the middle of the inner cavity (120) through the passageway (130), and the inner guide of the inner ring (2) is used to guide the material in the middle of the inner cavity (120) to move toward the end of the grinding cylinder (10) and enter the two ends of the outer cavity (110) respectively.

2. The ink raw material grinding apparatus according to claim 1, characterized in that: The outer guide includes multiple outer inclined plates (11) fixed to the outer circumferential surface of the outer ring (1). Each outer inclined plate (11) is arranged at intervals along the circumference of the outer ring (1), and the outer inclined plates (11) on both sides of the grinding cylinder (10) are symmetrically arranged with the cross-section passing through the center of the grinding cylinder (10) as the center. The inner guide includes multiple inner inclined plates (21) fixed to the inner circumferential surface of the inner ring (2). Each inner inclined plate (21) is arranged at intervals along the circumference of the inner ring (2), and the inner inclined plates (21) on both sides of the grinding cylinder (10) are symmetrically arranged with the cross-section passing through the center of the grinding cylinder (10) as the center.

3. The ink raw material grinding apparatus according to claim 2, characterized in that: The outer inclined plates (11) of two adjacent outer rings (1) are circumferentially offset. The outer guide also includes a plurality of outer stirring plates (12) fixed to the outer circumferential surface of the outer ring (1). The outer stirring plates (12) are located between two adjacent outer inclined plates (11). The inner inclined plates (21) of two adjacent inner rings (2) are circumferentially offset. The inner guide also includes a plurality of inner stirring plates (22) fixed to the inner circumferential surface of the inner ring (2). The inner stirring plates (22) are located between two adjacent inner inclined plates (21).

4. The ink raw material grinding apparatus according to any one of claims 1-3, characterized in that: The drive assembly includes a turntable (5), a drive motor, and a rotating shaft (51). The inner walls of both ends of the grinding cylinder (10) are recessed and formed with rotating grooves (52). The turntables (5) of the two drive assemblies are respectively sealed and rotated with the two rotating grooves (52). The drive motors of the two drive assemblies drive the turntables (5) to rotate through the rotating shafts (51). Each of the first connecting rods (3) and each of the second connecting rods (4) are evenly arranged circumferentially. Both the first connecting rod (3) and the second connecting rod (4) are U-shaped. The two straight segments of the first connecting rod (3) are located at different radial positions of the grinding cylinder (10), and the two straight segments of the second connecting rod (4) are located at different radial positions of the grinding cylinder (10). The first connecting rod (3) passes through the outer ring (1), and the second connecting rod (4) passes through the inner ring (2). The end of the first connecting rod (3) is fixed to the surface of one of the turntables (5), and the end of the second connecting rod (4) is fixed to the surface of the other turntable (5).

5. The ink raw material grinding apparatus according to claim 4, characterized in that: It also includes a cooling assembly. The first connecting rod (3) and the second connecting rod (4) are both U-shaped tubular structures. The inner cavity of the first connecting rod (3) and the inner cavity of the second connecting rod (4) are named cooling channels (31). The cooling channels (31) have an inlet and an outlet. The disc surface of the turntable (5) away from the middle of the grinding cylinder (10) is provided with an annular first channel (511) and a second channel (512). The diameter of the second channel (512) is smaller than the diameter of the first channel (511). The inlet of the cooling channel (31) is connected to the first channel (511), and the outlet of the cooling channel (31) is connected to the second channel (512). The cooling assembly includes a delivery pump, an inlet pipe (61), and an outlet pipe (62). The inlet pipe (61) is connected to the first channel (511), and the outlet pipe (62) is connected to the second channel (512). The delivery pump is used to pass cooling water into the inlet pipe (61).

6. The ink raw material grinding apparatus according to claim 5, characterized in that: An annular mounting groove (33) is provided on the opposite surfaces of two adjacent outer rings (1) and the opposite surfaces of two adjacent inner rings (2). A protective spring (32) is sleeved on the straight sections of the first connecting rod (3) and the second connecting rod (4). The diameter of the protective spring (32) is larger than the diameter of the first connecting rod (3) and the second connecting rod (4). The two ends of the protective spring (32) extend into the mounting groove (33) respectively.

7. The ink raw material grinding apparatus according to claim 4, characterized in that: An axial spring (34) is fitted onto the straight section of the second connecting rod (4). The two ends of the axial spring (34) abut against the opposite surfaces of two adjacent inner rings (2). The outer ring (1) is fixedly connected to the first connecting rod (3). The inner ring (2) and the second connecting rod (4) are axially slidingly fitted. A limit ring (23) is coaxially fixed on one side of the outer circumference of the inner ring (2). A return spring (35) is fitted onto the part of the second connecting rod (4) located in the passageway (130). The two ends of the inner ring (2) are respectively abutted against the sides of the two adjacent inner rings (2); in the early stage of grinding, the inner ring (2) and the outer ring (1) overlap axially, the outer ring (1) rotates, and the inner ring (2) does not rotate; in the later stage of grinding, the outer ring (1) and the inner ring (2) rotate in opposite directions, and the inner guide is driven by the reaction force of the material to drive the inner ring (2) to slide axially toward the middle of the grinding cylinder (10), the reset spring (35) is compressed, the inner ring (2) and the outer ring (1) are misaligned axially, and the limiting ring (23) abuts against the side of the outer ring (1).

8. The ink raw material grinding apparatus according to claim 4, characterized in that: There is a radial clearance between the outer ring (1) and the inner ring (2); both the outer ring (1) and the inner ring (2) are composed of multiple circumferentially abutting blocks (15), and each of the first connecting rods (3) and each of the second connecting rods (4) slides through the corresponding block (15); the part of the first connecting rod (3) and the second connecting rod (4) near the turntable (5) is set as a deformable part (36), and the deformable part (36) is curved; the straight section of the first connecting rod (3) and the second connecting rod (4) is fitted with an axial spring (34), and the two ends of the axial spring (34) abut against the opposite surfaces of two adjacent blocks (15).

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