A colorant nanomilling dispersion device

Abstract

The utility model discloses a kind of color paste nanometer grinding dispersion devices, including grinding box, the top of the grinding box is equipped with box cover, the top of the box cover is equipped with power motor, the output end of the power motor is through box cover and is equipped with main stirring shaft;The outer surface of the main stirring shaft is rotatably connected with connecting frame, the bottom of the connecting frame is rotatably connected with two driven gears, the outer surface of two the driven gears is jointly meshed and connected with gear ring, the outer surface of the gear ring is fixedly connected with the inner surface of box cover, the utility model is through setting power motor, under the action of the stirring blade of the staggered setting on main stirring shaft and vice stirring shaft, can greatly expand stirring coverage, break laminar flow state of color paste, make color paste and grinding beads in screen mesh fully collide, mix, effectively solve the problem of uneven grinding dispersion of traditional device, improve the consistency of color paste particle size.

Description

Technical Field

[0001] This utility model belongs to the field of grinding and dispersing technology, specifically a pigment paste nano-grinding and dispersing device. Background Technology

[0002] As an important type of coloring material, pigments have been deeply integrated into many fields such as architectural coatings, industrial coatings, textile printing and dyeing, and papermaking. Their quality directly affects the appearance, texture, color performance, and durability of end products, occupying an indispensable position in the production processes of various industries. With the continuous development of materials science, nano-grade pigments, with their superior coloring strength, purer color, stronger weather resistance, and outstanding advantages in transparency, vibrancy, and long-term storage stability, are gradually becoming the core choice to meet the needs of high-end applications.

[0003] In the use of existing pigment nano-grinding and dispersing devices, traditional devices mostly use a single stirring shaft to drive the stirring blades, which limits the stirring range. Furthermore, the material circulation between the grinding area and the stirring area is not smooth, resulting in some pigment particles not fully contacting the grinding beads and grinding structure before flowing to the discharge port. As a result, the particle size of the final pigment is inconsistent, affecting the subsequent use effect.

[0004] Therefore, a color paste nano-grinding and dispersing device is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a pigment nano-grinding and dispersing device, which effectively solves the problem of uneven grinding and dispersion in traditional devices, improves the consistency of pigment particle size, ensures the stability of long-term use of the device, and enhances the practicality of the device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pigment nano-grinding and dispersing device, comprising a grinding box, a box cover at the top of the grinding box, a power motor at the top of the box cover, the output end of the power motor passing through the box cover and having a main stirring shaft; a connecting frame rotatably connected to the outer surface of the main stirring shaft, two driven gears rotatably connected to the bottom end of the connecting frame, a gear ring meshing with the outer surfaces of the two driven gears, the outer surface of the gear ring being fixedly connected to the inner surface of the box cover, a driving gear fixedly sleeved on the outer surface of the main stirring shaft, the two driven gears meshing with the driving gear, and a grinding block rotatably connected to the outer surface of the main stirring shaft, a secondary stirring shaft at the bottom end of each of the two driven gears, both of the secondary stirring shafts passing through the grinding block and extending below the grinding block, and several stirring blades on the outer surfaces of the main stirring shaft and the two secondary stirring shafts located below the grinding block.

[0007] Preferably, the stirring blades on the two auxiliary stirring shafts are staggered with the stirring blades on the main stirring shaft.

[0008] Preferably, the outer surface of the grinding box is provided with a feeding hopper, the outer surface of the grinding box is provided with a support frame, the bottom of the grinding box is funnel-shaped, and a discharge pipe is installed at the lowest point of the bottom of the grinding box, and a valve is installed on the outer surface of the discharge pipe.

[0009] Preferably, the outer surface of the grinding block is engraved with grinding patterns, and a grinding gap is reserved at the corresponding position between the grinding block and the inner wall of the grinding box, and the area of ​​the inner wall of the grinding box corresponding to the grinding block is also engraved with matching reverse grinding patterns.

[0010] Preferably, a filter screen is rotatably connected to the outer surface of the grinding block, and the outer wall of the filter screen is in contact with the inner wall of the grinding box.

[0011] Preferably, the inner surface of the grinding box is provided with a screen, which is used to place grinding beads.

[0012] Preferably, the screen is located directly below the grinding block, and several stirring blades are located between the grinding block and the screen.

[0013] Preferably, the aperture of the sieve is smaller than that of the filter screen, and the aperture of the filter screen is larger than that of the grinding beads.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. By setting up a power motor, the stirring blades on the main stirring shaft and the auxiliary stirring shaft can greatly expand the stirring coverage area, break the laminar flow state of the color paste, and allow the color paste to fully collide and mix with the grinding beads in the screen. This effectively solves the problem of uneven grinding and dispersion in traditional devices and improves the consistency of color paste particle size.

[0016] 2. By setting up a screen, with the screen positioned directly below the grinding block and the stirring blades located between the grinding block and the screen, this utility model allows unground raw materials intercepted by the filter screen to remain in the grinding gap for coarse grinding. At the same time, the screen can precisely limit the movement range of the grinding beads, ensuring that the grinding beads always participate in fine grinding under the action of the stirring blades. This guarantees the stability of the device in long-term use and improves the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the grinding box structure of this utility model;

[0019] Figure 3This is a side view of the grinding block and stirring blade structure of this utility model;

[0020] Figure 4 This is a cross-sectional view of the grinding box structure of this utility model and a schematic diagram showing the removal of the internal structure of the grinding box.

[0021] In the picture: 1. Grinding box; 2. Box cover;

[0022] 3. Power motor; 31. Connecting frame; 32. Main stirring shaft; 33. Auxiliary stirring shaft; 34. Driven gear; 35. Drive gear; 36. Gear ring; 37. Grinding block; 371. Stirring blade;

[0023] 38. Filter screen; 39. Screen;

[0024] 4. Feed hopper; 5. Discharge pipe; 6. Valve; 7. Support frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figures 1 to 4 As shown, the present invention provides a nano-grinding and dispersing device for pigment paste, which includes a grinding box 1, a box cover 2 at the top of the grinding box 1, and a power motor 3 at the top of the box cover 2.

[0028] The output end of the power motor 3 passes through the box cover 2 and is equipped with a main stirring shaft 32; a connecting frame 31 is rotatably connected to the outer surface of the main stirring shaft 32.

[0029] The bottom end of the connecting frame 31 is rotatably connected to two driven gears 34. The outer surfaces of the two driven gears 34 are meshed with a toothed ring 36. The outer surface of the toothed ring 36 is fixedly connected to the inner surface of the box cover 2.

[0030] A drive gear 35 is fixedly sleeved on the outer surface of the main stirring shaft 32, and two driven gears 34 mesh with the drive gear 35. A grinding block 37 is rotatably connected to the outer surface of the main stirring shaft 32.

[0031] Each of the two driven gears 34 has a secondary stirring shaft 33 at its bottom end. Both secondary stirring shafts 33 pass through the grinding block 37 and extend to the bottom of the grinding block 37. The outer surfaces of the main stirring shaft 32 and the two secondary stirring shafts 33 located below the grinding block 37 are provided with several stirring blades 371. The main stirring shaft 32 meshes with the two driven gears 34 through the driving gear 35, and the driven gears 34 cooperate with the gear ring 36 to form a stable multi-axis transmission structure. The main stirring shaft 32 and the secondary stirring shafts 33 can rotate synchronously in opposite directions to improve the uniformity of pigment mixing and avoid the problem of insufficient local grinding caused by single shaft mixing.

[0032] Specifically, the stirring blades 371 on the two auxiliary stirring shafts 33 and the stirring blades 371 on the stirring shaft 32 are staggered. The staggered stirring blades 371 can form a cross-shear zone when rotating, breaking the laminar flow state of the pigment paste, increasing the collision frequency between the pigment paste and the grinding beads, enhancing the grinding and dispersion effect, and reducing the motion interference between the stirring blades 371, thus improving the operational stability of the device.

[0033] like Figures 1 to 4 As shown, the outer surface of the grinding box 1 is provided with a feeding hopper 4 and a support frame 7. The bottom of the grinding box 1 is funnel-shaped, and a discharge pipe 5 is installed at the lowest point of the bottom of the grinding box 1. A valve 6 is installed on the outer surface of the discharge pipe 5. The funnel-shaped bottom of the grinding box 1, together with the discharge pipe 5 and the valve 6, allows the ground pigment to naturally converge and the discharge to be precisely controlled by the valve 6, avoiding pigment residue. The support frame 7 provides stable support for the device and ensures the overall stability during operation.

[0034] Furthermore, the outer surface of the grinding block 37 is engraved with grinding patterns, and a grinding gap is reserved at the corresponding position of the grinding block 37 and the inner wall of the grinding box 1. The area of ​​the inner wall of the grinding box 1 corresponding to the grinding block 37 is also engraved with matching reverse grinding patterns. The grinding patterns on the outer surface of the grinding block 37 and the reverse grinding patterns on the inner wall of the grinding box 1 form a bidirectional grinding structure. The pigment paste is squeezed and sheared within the grinding gap to achieve the initial crushing of coarse particles, laying the foundation for subsequent fine grinding and improving the overall grinding efficiency.

[0035] like Figures 1 to 4 As shown, a filter screen 38 is rotatably connected to the outer surface of the grinding block 37. The outer wall of the filter screen 38 is in contact with the inner wall of the grinding box 1. The filter screen 38 can intercept coarse raw materials that have not been sufficiently ground, so that they are continuously ground in the grinding gap between the grinding block 37 and the inner wall of the grinding box 1, avoiding coarse particles from directly entering the lower area and affecting the quality of the finished product, and improving the consistency of the pigment particle size.

[0036] It is worth noting that the inner surface of the grinding box 1 is provided with a screen 39, which is used to place grinding beads. The screen 39 can confine the grinding beads in a specific area, prevent the grinding beads from flowing out with the color paste, ensure that the grinding beads always participate in the grinding and dispersion process of the color paste, improve the utilization rate of the grinding beads, and at the same time avoid the grinding beads from causing wear to the subsequent discharge structure.

[0037] like Figures 1 to 4 As shown, the screen 39 is located directly below the grinding block 37, and several stirring blades 371 are located between the grinding block 37 and the screen 39. The stirring blades 371 are located between the grinding block 37 and the screen 39, which can quickly introduce the pigment paste that has been initially ground by the grinding block 37 into the screen 39 to mix with the grinding beads. At the same time, the rotation of the stirring blades 371 drives the grinding beads to move, strengthens the contact between the pigment paste and the grinding beads, and improves the fine grinding effect.

[0038] It is worth emphasizing that the aperture of screen 39 is smaller than that of filter screen 38, and the aperture of filter screen 38 is larger than that of grinding beads. The difference in aperture between screen 39 and filter screen 38 forms a graded filtration structure. Filter screen 38 allows grinding beads to pass through and intercepts coarse particles, while screen 39 blocks grinding beads and allows qualified color paste to pass through. This ensures the circulation of grinding beads and the purity of the finished color paste, thereby improving the filtration accuracy of the device.

[0039] Working principle and process: When grinding raw materials, the raw materials are first poured into the grinding box 1 through the feeding hopper 4. The power motor 3 is started and the power motor 3 drives the main stirring shaft 32 to rotate. The main stirring shaft 32 drives two driven gears 34 to rotate through the meshing of the driving gear 35. The driven gears 34 operate stably under the action of the gear ring 36, thereby driving the auxiliary stirring shaft 33 to rotate synchronously in the opposite direction.

[0040] The pigment raw material enters the grinding chamber 1 from the feed hopper 4. It is first coarsely ground by the grinding blocks 37 and the reverse grinding texture of the inner wall of the grinding chamber 1 in the grinding gap. The filter screen 38 intercepts the unground coarse particles and continues to coarsely grind them. After coarse grinding, the pigment enters the lower area. The staggered stirring blades 371 on the main stirring shaft and the auxiliary stirring shaft 33 drive the grinding beads in the screen 39 to move and finely grind the pigment. Finally, the qualified pigment flows through the screen 39 to the bottom of the grinding chamber 1 and is discharged through the discharge pipe 5 and the valve 6, completing the nanoscale grinding and dispersion process of the pigment.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nano-grinding and dispersing device for pigment paste, comprising a grinding chamber (1), characterized in that: The grinding box (1) is provided with a box cover (2) at the top, and a power motor (3) is provided at the top of the box cover (2). The output end of the power motor (3) passes through the box cover (2) and is provided with a main stirring shaft (32); a connecting frame (31) is rotatably connected to the outer surface of the main stirring shaft (32); The bottom end of the connecting frame (31) is rotatably connected to two driven gears (34), and the outer surfaces of the two driven gears (34) are meshed with a toothed ring (36). The outer surface of the toothed ring (36) is fixedly connected to the inner surface of the box cover (2). The outer surface of the main stirring shaft (32) is fixedly sleeved with a drive gear (35), and the two driven gears (34) mesh with the drive gear (35). A grinding block (37) is rotatably connected to the outer surface of the main stirring shaft (32). The bottom ends of the two driven gears (34) are provided with auxiliary stirring shafts (33). The two auxiliary stirring shafts (33) pass through the grinding block (37) and extend to the bottom of the grinding block (37). The outer surfaces of the main stirring shaft (32) and the two auxiliary stirring shafts (33) located below the grinding block (37) are provided with a number of stirring blades (371).

2. The color paste nano-grinding and dispersing device according to claim 1, characterized in that: The stirring blades (371) located on the two auxiliary stirring shafts (33) are staggered with the stirring blades (371) on the stirring shaft (32).

3. The color paste nano-grinding and dispersing device according to claim 1, characterized in that: The grinding box (1) is provided with a feeding hopper (4) on its outer surface and a support frame (7) on its outer surface. The bottom of the grinding box (1) is funnel-shaped and a discharge pipe (5) is installed at the lowest point of the bottom of the grinding box (1). A valve (6) is installed on the outer surface of the discharge pipe (5).

4. The color paste nano-grinding and dispersing device according to claim 1, characterized in that: The outer surface of the grinding block (37) is engraved with grinding patterns, and a grinding gap is reserved between the grinding block (37) and the inner wall of the grinding box (1). The area of ​​the inner wall of the grinding box (1) corresponding to the grinding block (37) is also engraved with matching reverse grinding patterns.

5. The color paste nano-grinding and dispersing device according to claim 4, characterized in that: The outer surface of the grinding block (37) is rotatably connected to a filter screen (38), and the outer wall of the filter screen (38) is in contact with the inner wall of the grinding box (1).

6. The color paste nano-grinding and dispersing device according to claim 1, characterized in that: The inner surface of the grinding box (1) is provided with a screen (39), which is used to place grinding beads.

7. The color paste nano-grinding and dispersing device according to claim 6, characterized in that: The screen (39) is located directly below the grinding block (37), and several stirring blades (371) are located between the grinding block (37) and the screen (39).

8. The color paste nano-grinding and dispersing device according to claim 6, characterized in that: The aperture of the sieve (39) is smaller than that of the filter screen (38), and the aperture of the filter screen (38) is larger than that of the grinding beads.

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