A multi-stage dispersion disc

Abstract

This utility model discloses a multi-stage dispersion disc, relating to the field of powder dispersion technology. The utility model includes: a rotating shaft with quick-release mechanisms coaxially mounted at both ends; a first dispersion disc coaxially mounted on the rotating shaft, with a plurality of first dispersion teeth arranged around its axis on its outer edge, and a first connecting hole formed around its axis in the disc body; a second dispersion disc coaxially mounted on the rotating shaft, with a plurality of second dispersion teeth arranged around its axis on its outer edge, and a second connecting hole formed around its axis in the disc body; and a third dispersion disc coaxially mounted on the rotating shaft, with a plurality of third dispersion teeth arranged around its axis on its outer edge, and a third connecting hole formed around its axis in the disc body; the diameters of the first, second, and third dispersion discs gradually decrease to solve the problem that existing dispersion discs easily form dead zones and easily separate when dispersing high-specific-weight, high-viscosity materials.

Description

Technical Field

[0001] This utility model relates to the field of powder dispersion technology, specifically, a multi-stage dispersion disc. Background Technology

[0002] As a core mixing and dispersing equipment in the fine chemical industry such as coatings, adhesives, and inks, the high-speed disperser's core function is to generate shear and centrifugal forces through a high-speed rotating dispersing head to achieve uniform mixing of solid fillers, functional additives, and liquid matrix, ultimately forming a stable dispersion system.

[0003] In the field of waterproof coating preparation, the performance of high-speed dispersers directly determines the particle fineness, component uniformity, and water resistance of the coating film. Currently, mainstream high-speed dispersers, limited by traditional structural designs, struggle to meet the production demands of high-viscosity, high-filler-content waterproof coatings in practical applications. For example, the core flaw in existing disperser designs lies in their inability to create a three-dimensional flow field. On one hand, shear force is generated only in a single plane, easily forming a dead zone below the disc. High-density fillers, due to gravity, settle at the bottom of the tank and cannot be effectively drawn into the shear zone, requiring manual scraping and resulting in low dispersion efficiency. On the other hand, the shear direction is singular, lacking axial guiding function. High-viscosity waterproof coatings are prone to surface accumulation during dispersion; that is, after being thrown towards the tank wall by centrifugal force, the material cannot flow back to the center of the disperser, forming stratification. This ultimately leads to uneven coating composition and significant deviations in solid content within the same batch of products. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage dispersion disc to solve the problem that existing dispersion discs are prone to forming dead zones and stratification when dispersing high-specific-weight and high-viscosity materials.

[0005] To solve the above problems, the present invention adopts the following technical means: A multi-level distributed disk, comprising: The rotating shaft has quick-release mechanisms that are coaxially installed and detached at both ends. These quick-release mechanisms are used for transmission connection with an external rotating mechanism. The first dispersing disc is coaxially mounted on the rotating shaft, and its outer edge is provided with a plurality of first dispersing teeth around its axis. The disc body of the first dispersing disc is constructed with a first connecting hole around its axis. The second dispersing disc is coaxially mounted on the rotating shaft, and its outer edge is provided with a plurality of second dispersing teeth around its axis. The disc body of the second dispersing disc is constructed with a second connecting hole around its axis. The third dispersion disc is coaxially mounted on the rotating shaft, and its outer edge is provided with a number of third dispersion teeth around its axis. The disc body of the third dispersion disc is constructed with a third connecting hole around its axis. The first, second, and third dispersion disks are arranged sequentially from top to bottom on the rotating shaft, with the diameters of the first, second, and third dispersion disks gradually decreasing.

[0006] Preferably, the first, second, and third dispersing teeth are all wedge-shaped blocks, and their sharp ends are all positioned away from the first, second, and third dispersing disks.

[0007] Furthermore, the top surface of the first dispersing tooth forms an angle α with the horizontal plane of the top surface of the first dispersing disk, and the angle α is 30°. The top surface of the second dispersing tooth forms an angle β with the horizontal plane of the top surface of the second dispersing disk, and the angle β is 45°. The top surface of the third dispersing tooth forms an angle γ with the horizontal plane of the top surface of the third dispersing disk, and the angle γ is 60°.

[0008] Furthermore, the sharp ends of the first, second, and third dispersion teeth are all constructed with rounded corners, and the radius of the rounded corners is 0.5 mm.

[0009] Furthermore, the first connecting hole passes through the first dispersing disk along a first spiral line coaxial with the rotating shaft; The second connecting hole passes through the second dispersing disk along a second spiral line coaxial with the rotating shaft; The third connecting hole passes through the third dispersing disk along a third spiral line coaxial with the rotating shaft; The pitches of the first, second, and third helices are gradually reduced.

[0010] Furthermore, the number of the first connecting hole, the second connecting hole, and the third connecting hole is gradually reduced.

[0011] Furthermore, the quick-assembly mechanism includes a top positioning part that is drivenly connected to the rotating mechanism and a bottom positioning part that is rotatably connected to the bottom surface of the inner wall of the tank. The top positioning part includes a first positioning disk that is connected to the rotating mechanism. A first arc-shaped piece is coaxially arranged on the bottom surface of the first positioning disk. A second arc-shaped piece is detachably installed with the first arc-shaped piece. The first arc-shaped piece and the second arc-shaped piece are spliced ​​together to form a first positioning cavity for assembling the rotating shaft. The inner wall of the first positioning cavity is connected to the outer wall of the rotating shaft by a spline. The bottom positioning part includes a second positioning plate rotatably connected to the bottom surface of the inner wall of the tank. A third arc-shaped piece is coaxially arranged on the top surface of the second positioning plate. A fourth arc-shaped piece is detachably installed with the third arc-shaped piece. The third arc-shaped piece and the fourth arc-shaped piece are spliced ​​together to form a second positioning cavity for assembling the rotating shaft. The inner wall of the second positioning cavity is connected to the outer wall of the rotating shaft by a spline.

[0012] This utility model has the following beneficial effects during use: When dispersing materials using a dispersion disc, a multi-layered dispersion disc system is employed, consisting of a first, second, and third dispersion disc. These discs, along with their edges equipped with first, second, and third dispersion teeth, form a three-dimensional shearing field. Simultaneously, first, second, and third connecting holes, respectively located on the first, second, and third dispersion discs, promote micro-circulation of the material on both the upper and lower surfaces of the dispersion disc, avoiding dead zones. This micro-circulation area within the three-dimensional shearing field improves the dispersion efficiency of high-viscosity slurries, enhances particle size uniformity, prevents large-scale particle agglomeration, and prevents the sedimentation of high-density fillers that could form dead zones. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a front view structural diagram of the present utility model.

[0015] Among them, 1-rotating shaft, 2-first dispersing disc, 3-first dispersing tooth, 4-first connecting hole, 5-second dispersing disc, 6-second dispersing tooth, 7-second connecting hole, 8-third dispersing disc, 9-third dispersing tooth, 10-third connecting hole, 11-first positioning disc, 12-first arc-shaped piece, 13-second arc-shaped piece, 14-second positioning disc, 15-third arc-shaped piece, 16-fourth arc-shaped piece. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please refer to Figure 1 and Figure 2 As shown, a multi-level distribution disk includes: The rotating shaft 1 has quick-release mechanisms that are coaxially installed and detached at both ends. These quick-release mechanisms are used for transmission connection with an external rotating mechanism. The first dispersing disk 2 is coaxially mounted on the rotating shaft 1, and a plurality of first dispersing teeth 3 are arranged around its outer edge around its axis. The disk body of the first dispersing disk 2 is constructed with a first connecting hole 4 around its axis. The second dispersing disk 5 is coaxially mounted on the rotating shaft 1, and a plurality of second dispersing teeth 6 are provided around its outer edge along its axis. The disk body of the second dispersing disk 5 is constructed with a second connecting hole 7 around its axis. The third dispersing disk 8 is coaxially mounted on the rotating shaft 1, and a plurality of third dispersing teeth 9 are arranged around its outer edge around its axis. The disk body of the third dispersing disk 8 is constructed with a third connecting hole 10 around its axis. The first dispersion disk 2, the second dispersion disk 5, and the third dispersion disk 8 are arranged sequentially from top to bottom on the rotating shaft 1, with the diameters of the first dispersion disk 2, the second dispersion disk 5, and the third dispersion disk 8 gradually decreasing.

[0023] Thus, when dispersing materials using dispersion discs, a multi-layered dispersion disc setup is employed, consisting of a first dispersion disc 2, a second dispersion disc 5, and a third dispersion disc 8. These, combined with the first dispersion teeth 3, second dispersion teeth 6, and third dispersion teeth 9 positioned along their edges, form a three-dimensional shearing field. Simultaneously, the first connecting holes 4, second connecting holes 7, and third connecting holes 10, respectively located on the first dispersion disc 2, second dispersion disc 5, and third dispersion disc 8, promote micro-circulation of the material on both the upper and lower surfaces of the dispersion discs, avoiding dead zones. This micro-circulation area within the three-dimensional shearing field improves the dispersion efficiency of high-viscosity slurries, enhances the uniformity of particle refinement, prevents large-scale particle agglomeration, and prevents the sedimentation of high-density fillers, thus avoiding the formation of dead zones.

[0024] Furthermore, the first dispersing tooth 3, the second dispersing tooth 6, and the third dispersing tooth 9 are all wedge-shaped blocks, and their sharp ends are all positioned away from the first dispersing disk 2, the second dispersing disk 5, and the third dispersing disk 8.

[0025] Furthermore, the top surface of the first dispersing tooth 3 forms an angle α with the horizontal plane of the top surface of the first dispersing disk 2, and the angle α is 30°. The top surface of the second dispersing tooth 6 forms an angle β with the horizontal plane of the top surface of the second dispersing disk 5, and the angle β is 45°. The top surface of the third dispersing tooth 9 forms an angle γ with the horizontal plane of the top surface of the third dispersing disk 8, and the angle γ is 60°.

[0026] In this way, by setting the dispersing teeth at different angles, a three-dimensional shearing field is formed from top to bottom during the rotation of the entire dispersing disc, which enhances the crushing effect on agglomerated particles, while ensuring that the shearing force is evenly distributed and avoiding excessive or insufficient shearing of local materials.

[0027] Furthermore, more specifically, the aforementioned first dispersing tooth 3 has an upwardly inclined surface on the side facing the material during the shearing process, thereby ensuring that the first dispersing tooth 3 can lift the material upward. This utilizes the compression between the material and the inner wall of the tank to cause the material above the disc to be drawn into the shearing area, preventing the material from accumulating above the liquid surface, while providing a continuous material supply for the middle layer shearing.

[0028] During the shearing process, the side of the second dispersing tooth 6 facing the material is set as a shearing surface with symmetrical upper and lower surfaces, so that the working surface is in a semi-horizontal state. This makes the radial shearing force of the second dispersing tooth 6 on the material the strongest, while generating a moderate axial thrust to throw the material outward, thus enhancing the tearing effect on agglomerated particles. This is suitable for the main shearing stage of medium viscosity materials in waterproof coatings.

[0029] For the aforementioned third dispersing tooth 9, its side facing the material is set as a downward inclined surface, thereby ensuring that it generates a strong downward pushing force to press the material sheared by the second dispersing tooth 6 towards the bottom of the tank. By utilizing the mutual compression between the material and the inner wall of the bottom of the tank, the material flows and is stirred, avoiding the formation of a dead zone below the disc. At the same time, it drives the heavy filler deposited at the bottom to circulate upward and mix with the upper material, ensuring that the high specific gravity particles are evenly dispersed.

[0030] Therefore, after the first dispersion tooth 3, the second dispersion tooth 6 and the third dispersion tooth 9 are constructed, a spiral upward annular flow field is formed around the dispersion disk by the combination of upward (first dispersion tooth 3), horizontal shear (second dispersion tooth 6) and downward (third dispersion tooth 9) angles. The material is sucked in from the upper and lower layers, sheared in the middle layer, pushed to the bottom from the lower layer, and then rises back to the upper layer along the cylinder wall to complete the full range circulation.

[0031] Furthermore, the angle gradient design can avoid local over-shearing or under-shearing caused by a single angle, making it especially suitable for mixtures with large density differences.

[0032] Furthermore, the sharp ends of the first dispersion tooth 3, the second dispersion tooth 6, and the third dispersion tooth 9 are all constructed with rounded corners, and the radius of the rounded corners is 0.5 mm.

[0033] This avoids scratching the inner wall of the tank during high-speed rotation.

[0034] Furthermore, in order to create a micro-circulation environment, the mixing uniformity of materials and the shearing effect are improved.

[0035] The first connecting hole 4 passes through the first dispersing disk 2 along a first spiral line coaxial with the rotating shaft 1; The second connecting hole 7 passes through the second dispersing disk 5 along a second spiral line coaxial with the rotating shaft 1; The third connecting hole 10 passes through the third dispersing disk 8 along a third spiral line coaxial with the rotating shaft 1; The pitches of the first, second, and third helices are gradually reduced.

[0036] Furthermore, the number of the first connecting hole 4, the second connecting hole 7, and the third connecting hole 10 is gradually reduced.

[0037] Moreover, and most importantly, the downward spiral direction of the first, second, and third spirals is opposite to the rotation direction of the rotating rod. That is, if the rotating rod rotates clockwise, the spirals extend downwards counterclockwise.

[0038] In this way, when the rotating shaft 1 rotates at high speed, the material above the disc is "drawn" into the disc below through the first connecting hole 4, the second connecting hole 7 and the third connecting hole 10. The material below is thrown to the edge due to centrifugal force, forming an up-and-down circulating flow, avoiding the appearance of a static dead zone below the disc. This is especially effective for fillers in high-viscosity waterproof coatings, reducing the residue of agglomerated particles.

[0039] Furthermore, when the dispersing disc rotates at high speed, the frictional force between the inner wall of the connecting hole and the material generates a reverse circumferential component force, propelling the material to flow obliquely along a spiral trajectory. This, combined with the radial flow field generated by the sawtooth, creates a circulation from the center to the edge. It also extends the flow path of the material within the connecting hole, allowing the material passing through to mix more thoroughly with the surrounding material, preventing short-circuit rapid passage.

[0040] Furthermore, in order to enable the multi-stage dispersion disc involved in this application to be quickly disassembled and connected to the tank, thereby improving replacement efficiency.

[0041] The quick-assembly mechanism includes a top positioning part that is drivenly connected to the rotating mechanism and a bottom positioning part that is rotatably connected to the bottom surface of the inner wall of the tank. The top positioning part includes a first positioning disk 11 that is connected to the rotating mechanism. A first arc-shaped piece 12 is coaxially arranged on the bottom surface of the first positioning disk 11. A second arc-shaped piece 13 is detachably installed with the first arc-shaped piece 12. The first arc-shaped piece 12 and the second arc-shaped piece 13 are spliced ​​together to form a first positioning cavity for assembling the rotating shaft 1. The inner wall of the first positioning cavity is connected to the outer wall of the rotating shaft 1 by a spline. The bottom positioning part includes a second positioning disk 14 rotatably connected to the bottom surface of the inner wall of the tank. A third arc-shaped piece 15 is coaxially arranged on the top surface of the second positioning disk 14. A fourth arc-shaped piece 16 is detachably installed with the third arc-shaped piece. The third arc-shaped piece 15 and the fourth arc-shaped piece 16 are spliced ​​together to form a second positioning cavity for assembling the rotating shaft 1. The inner wall of the second positioning cavity is connected to the outer wall of the rotating shaft 1 by a spline.

[0042] In this way, when replacement or disassembly is required, the first arc-shaped piece 12 and the second arc-shaped piece 13, as well as the third arc-shaped piece 15 and the fourth arc-shaped piece 16, can be disassembled from the top positioning part and the bottom positioning part, thus achieving the purpose of quick disassembly.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage dispersion disc, characterized by, include: The rotating shaft (1) has quick-release mechanisms that are coaxially disassembled and installed at both ends. The quick-release mechanisms are used to drive the external rotating mechanism. The first dispersing disk (2) is coaxially mounted on the rotating shaft (1), and a number of first dispersing teeth (3) are arranged around its axis on its outer edge. The disk body of the first dispersing disk (2) is constructed with a first connecting hole (4) around its axis. The second dispersing disk (5) is coaxially mounted on the rotating shaft (1), and a number of second dispersing teeth (6) are provided around its outer edge around its axis. The disk body of the second dispersing disk (5) is constructed with a second connecting hole (7) around its axis. The third dispersion disk (8) is coaxially mounted on the rotating shaft (1), and a number of third dispersion teeth (9) are arranged around its outer edge around its axis. The disk body of the third dispersion disk (8) is constructed with a third connecting hole (10) around its axis. The first dispersion disk (2), the second dispersion disk (5) and the third dispersion disk (8) are arranged on the rotating shaft (1) from top to bottom, and the diameters of the first dispersion disk (2), the second dispersion disk (5) and the third dispersion disk (8) are gradually reduced.

2. A multi-stage spin disc according to claim 1, wherein, The first dispersion tooth (3), the second dispersion tooth (6) and the third dispersion tooth (9) are all wedge-shaped blocks, and their sharp ends are all set away from the first dispersion disk (2), the second dispersion disk (5) and the third dispersion disk (8).

3. A multi-stage spin disc according to claim 1 or 2, wherein, The top surface of the first dispersing tooth (3) forms an angle α with the top surface of the first dispersing disk (2) at a horizontal angle of 30°. The top surface of the second dispersing tooth (6) forms an angle β with the horizontal plane of the top surface of the second dispersing disk (5), and the angle β is 45°. The top surface of the third dispersion tooth (9) forms an angle γ with the top surface of the third dispersion disk (8), and the angle γ is 60°.

4. A multi-stage spin disc according to claim 3, wherein, The sharp ends of the first dispersion tooth (3), the second dispersion tooth (6) and the third dispersion tooth (9) are all constructed with rounded corners and the radius of the rounded corners is 0.5 mm.

5. A multi-stage spin disc according to claim 1, wherein, The first connecting hole (4) passes through the first dispersing disk (2) along a first spiral line coaxial with the rotating shaft (1); The second connecting hole (7) passes through the second dispersing disk (5) along a second spiral line coaxial with the rotating shaft (1); The third connecting hole (10) passes through the third dispersing disk (8) along a third spiral line coaxial with the rotating shaft (1). The pitches of the first, second, and third helices are gradually reduced.

6. A multi-stage spin disc according to claim 1 or 5, wherein, The number of the first connecting hole (4), the second connecting hole (7), and the third connecting hole (10) is gradually reduced.

7. A multi-stage spin disc according to claim 1 wherein, The quick-assembly mechanism includes a top positioning part that is drivenly connected to the rotating mechanism and a bottom positioning part that is rotatably connected to the bottom surface of the inner wall of the tank. The top positioning part includes a first positioning disk (11) that is connected to the rotating mechanism. A first arc-shaped piece (12) is coaxially arranged on the bottom surface of the first positioning disk (11). A second arc-shaped piece (13) is detachably installed with the first arc-shaped piece (12). The first arc-shaped piece (12) and the second arc-shaped piece (13) are spliced ​​together to form a first positioning cavity for assembling the rotating shaft (1). The inner wall of the first positioning cavity is connected to the outer wall of the rotating shaft (1) by a spline. The bottom positioning part includes a second positioning plate (14) rotatably connected to the bottom surface of the inner wall of the tank. A third arc-shaped piece (15) is coaxially arranged on the top surface of the second positioning plate (14). A fourth arc-shaped piece (16) is detachably installed with the third arc-shaped piece (15). The third arc-shaped piece (15) and the fourth arc-shaped piece (16) are spliced ​​together to form a second positioning cavity for assembling the rotating shaft (1). The inner wall of the second positioning cavity is connected to the outer wall of the rotating shaft (1) by a spline.

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