A bubble removal device for a uv topcoat dispersion process
By designing a bubble removal device for the UV topcoat dispersion process, and utilizing the coordinated rotation of the shearing unit and the mesh outer cylinder, the problem of large bubbles affecting degassing efficiency in the existing technology is solved, achieving efficient liquid degassing and material dispersion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BOLUO COUNTY SHIWAN TOWN DONGXIANG PAINT CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-02
AI Technical Summary
Existing centrifugal degassing machines tend to generate large bubbles during the UV topcoat dispersion process, resulting in low degassing efficiency and affecting material dispersion.
A bubble removal device for the dispersion process of UV topcoat was designed, comprising a centrifugal chamber, a drive motor, a rotating shaft, a first dispersion structure, and a second dispersion structure. The drive motor drives the coordinated rotation of the shearing unit and the mesh outer cylinder to enhance the fluid shearing force, causing large bubbles to break down into smaller bubbles. The mesh structure prevents the backflow of incompletely defoamed liquid, ensuring that the bubbles migrate towards the center and escape.
It significantly improved the liquid degassing effect, increased degassing efficiency, reduced secondary bubble generation, and stabilized the liquid flow pattern.
Smart Images
Figure CN224307883U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of degassing device technology, and in particular to a bubble removal device for UV topcoat dispersion process. Background Technology
[0002] The dispersion process of UV topcoat generally includes: adding resin, monomers, pigments, fillers, and additives (such as photoinitiators and leveling agents) to a mixing container and using a high-speed disperser or agitator for initial mixing to form a homogeneous slurry, thus completing pre-dispersion; refining pigments and fillers to the target particle size using the high shear force of grinding media (such as zirconium beads), thus completing grinding dispersion; adding remaining resin, reactive diluents, and functional additives (such as defoamers and leveling agents) to adjust viscosity and rheological properties, thus completing paint mixing; removing undispersed particles and impurities using a filter screen (such as 100-200 mesh) or a precision filter; and finally testing fineness, viscosity, color, and stability. Based on the above process, the key time points for defoaming treatment of UV topcoat are mainly during the pre-dispersion stage, after grinding dispersion, during mixing after paint mixing, and before and after filtration, because these production stages involve measures that can easily introduce or generate bubbles, such as high-speed stirring, shearing, material addition, and pressure changes. To prevent UV topcoat from producing bubbles that could affect the actual application and construction results, it is necessary to defoam at each stage of the UV topcoat production process.
[0003] Currently, commonly used defoaming methods include adding defoaming agents, vacuum defoaming, static defoaming, and centrifugal defoaming. Among these, centrifugal defoaming utilizes the density difference between liquid and gas, using high-speed centrifugal force to throw the liquid outwards, simultaneously causing bubbles to gather towards the center and then burst and escape, thus completing the defoaming process. Existing centrifugal defoamers use a rotating drum to load the liquid to be defoamed, and a motor drives the drum to rotate at high speed to generate a centrifugal force field to achieve liquid defoaming. However, the centrifugal force field generated by the above-mentioned centrifugal defoamers is singular, resulting in low bubble escape stability and reduced defoaming efficiency for large bubbles generated during the defoaming process, while also affecting the material dispersion. Utility Model Content
[0004] Therefore, it is necessary to provide a bubble removal device for the UV topcoat dispersion process to address the technical problem that the existing centrifugal degassing machine degassing process easily generates large bubbles that affect the degassing efficiency.
[0005] A bubble removal device for a UV topcoat dispersion process includes a centrifuge chamber, a drive motor, a rotating shaft, a first dispersion structure, and a second dispersion structure. The drive motor is located at the bottom of the centrifuge chamber, and the output shaft of the drive motor extends through the centrifuge chamber and drives the rotating shaft. The first dispersion structure and the second dispersion structure are both housed in the centrifuge chamber and are respectively connected to the rotating shaft.
[0006] The first dispersion structure includes several shearing units, which are arranged radially and at equal angles around the rotating shaft and are respectively connected to the side surface of the rotating shaft; the second dispersion structure is a mesh outer cylinder, which is sleeved around the rotating shaft on the outer periphery of the several shearing units, and the second dispersion structure is spaced at a preset distance from the inner wall of the centrifuge chamber to form a discharge space.
[0007] In one embodiment, each of the above-described shearing units is configured as a honeycomb mesh panel.
[0008] In one embodiment, the centrifuge chamber is provided with an exhaust channel and a discharge channel. The exhaust channel is located at the geometric center of the centrifuge chamber and extends along the rotation axis from the main body of the centrifuge chamber to the top of the centrifuge chamber. The discharge channel is located on the side wall surface at the bottom of the centrifuge chamber and connects to the outside of the centrifuge chamber.
[0009] In one embodiment, the top of the centrifuge chamber is set as an open opening. Based on this, the bubble removal device for the UV topcoat dispersion process also includes a cover, which corresponds to and cooperates with the open opening at the top of the centrifuge chamber.
[0010] In one embodiment, the cover is provided with an exhaust valve corresponding to the exhaust channel.
[0011] In one embodiment, the bubble removal device for the UV topcoat dispersion process further includes a connecting structure disposed at the bottom end of the rotating shaft; the first dispersion structure and the second dispersion structure are respectively connected to the rotating shaft through the connecting structure.
[0012] In one embodiment, the connection structure is configured as a disc-shaped structure, with the connection center of the connection structure sleeved to the bottom end of the rotating shaft; the second dispersive structure is correspondingly sleeved to the edge of the connection structure; and the bottom end of each shearing unit is connected to the surface of the connection structure in a predetermined installation direction.
[0013] In one embodiment, each of the shearing units is spaced a predetermined distance from the rotating shaft on one side edge, thereby forming a columnar exhaust channel between the shearing units based on the rotation center.
[0014] In one embodiment, each of the above-described shearing units includes a honeycomb panel and a frame, the honeycomb panel being fitted inside the frame, and the bottom end of the frame being connected to a corresponding connection point on the surface of the connecting structure.
[0015] In one embodiment, the frame described above is set as a square frame.
[0016] In one embodiment, each of the above-described shearing units further includes a reinforcing structure fitted onto the outside of the frame.
[0017] In one embodiment, the first dispersing unit described above includes four shearing units.
[0018] In one embodiment, the four shearing units are arranged radially around the pivot, with the included angle between adjacent shearing units set to 45°.
[0019] In one embodiment, the bottom wall of the centrifuge chamber is set as an inclined plane relative to the direction of gravity.
[0020] In one embodiment, the discharge channel is located at the lower end of the bottom wall of the centrifuge chamber.
[0021] The bubble removal device used in the UV topcoat dispersion process described above drives the first dispersion structure and the second dispersion structure to rotate by a drive motor. While providing centrifugal force to the UV topcoat material, it also enhances its fluid shear force to improve defoaming ability. Specifically, the drive motor can simultaneously drive the first and second dispersion structures to rotate. Several shearing units stir the liquid in the centrifuge chamber. At this time, the shearing units, together with the components of the second dispersion structure, form a combined centrifugal force field. While fully dispersing the liquid material, the liquid is also forced to be discharged through the mesh of the second dispersion structure to the discharge space outside the second dispersion structure. During this process, the first dispersion structure can break up large bubbles generated by liquid degassing into smaller bubbles. While the second dispersion structure provides the main centrifugal force to drive the liquid to move outward, its mesh structure can prevent the backflow of incompletely degassed liquid, ensuring that only the degassed liquid is discharged through the mesh. The accumulated bubbles migrate towards the central low-pressure area under the action of centrifugal force and finally escape to the outside of the device through the exhaust structure of the centrifuge chamber. In addition, the rotation of the second dispersion structure can stabilize the liquid flow pattern, reduce turbulence, and avoid the generation of secondary bubbles. Based on this, the bubble removal device for the UV topcoat dispersion process of this utility model can greatly improve the liquid degassing effect and improve the degassing efficiency. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a bubble removal device used in the UV topcoat dispersion process in one embodiment.
[0023] Figure 2 This is an exploded structural diagram of a bubble removal device used in the UV topcoat dispersion process in one embodiment.
[0024] Figure 3 This is a partial structural schematic diagram of a bubble removal device used in the UV topcoat dispersion process in one embodiment. Detailed Implementation
[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0031] Please see Figures 1 to 3This utility model discloses a bubble removal device 1 for the dispersion process of UV topcoat. The bubble removal device 1 for the dispersion process of UV topcoat includes a centrifugal chamber 10, a drive motor 20, a rotating shaft 30, a first dispersion structure, and a second dispersion structure 50. With the direction of gravity as the downward direction, the drive motor 20 is disposed at the bottom of the centrifugal chamber 10, and the output shaft of the drive motor 20 extends through the centrifugal chamber 10 and drives the rotating shaft 30. The first dispersion structure and the second dispersion structure 50 are both housed in the centrifugal chamber 10 and are respectively connected to the rotating shaft 30. Thus, the drive motor 20 can drive the first dispersion structure and the second dispersion structure 50 to rotate through the rotating shaft 30, thereby providing centrifugal force to the UV topcoat material and enhancing its fluid shear force to enhance the defoaming ability. Specifically, the first dispersion structure includes a plurality of shearing units 40, which are arranged radially and at equal angles around the rotating shaft 30 and are respectively connected to the side surface of the rotating shaft 30 to form a stirring structure; the second dispersion structure 50 is a mesh outer cylinder, which is sleeved around the rotating shaft 30 on the outer periphery of the plurality of shearing units 40, and the second dispersion structure 50 and the inner wall of the centrifuge chamber 10 are spaced at a preset distance to form a discharge space. The drive motor 20 can simultaneously drive the first dispersion structure and the second dispersion structure 50 to rotate. Several shearing units 40 stir the liquid in the centrifuge chamber 10. At this time, the shearing units 40 work together with the components of the second dispersion structure 50 to form a composite centrifugal force field. While fully dispersing the liquid material, the liquid is also forced to be discharged through the mesh of the second dispersion structure 50 to the discharge space outside the second dispersion structure 50. During this process, while the second dispersion structure 50 provides the main centrifugal force to drive the liquid to move outward, its mesh structure can prevent the backflow of liquid that has not been completely defoamed, ensuring that only the defoamed liquid is discharged through the mesh. The accumulated bubbles migrate to the central low-pressure area under the action of centrifugal force and finally escape to the outside of the device through the exhaust structure of the centrifuge chamber 10. In addition, the rotation of the second dispersion structure 50 can stabilize the liquid flow pattern, reduce turbulence and avoid the generation of secondary bubbles. Based on this, the bubble removal device 1 for the UV topcoat dispersion process of this utility model can greatly improve the liquid defoaming effect and improve the defoaming efficiency.
[0032] Furthermore, each shearing unit 40 is configured as a honeycomb mesh plate, which can form a narrow flow channel, forcing the fluid through a narrow path, thereby breaking up large-volume bubbles during stirring and increasing the contact area between the liquid and the bubbles, so as to accelerate the convergence and escape of bubbles in the central region of the centrifuge chamber 10.
[0033] Furthermore, the centrifuge chamber 10 is provided with an exhaust channel a and a discharge channel b. The exhaust channel a is located at the geometric center of the centrifuge chamber 10 and extends along the rotating shaft 30 from the main body of the centrifuge chamber 10 to the top of the centrifuge chamber 10, so that the gas removed from the liquid can escape from the top of the centrifuge chamber 10 through the exhaust channel a. The discharge channel b is located on the side wall surface at the bottom of the centrifuge chamber 10 and connects to the outside of the centrifuge chamber 10, so that the degassed liquid can be discharged through the discharge channel b.
[0034] Furthermore, the top of the centrifuge chamber 10 is open. Based on this, the bubble removal device 1 used in the UV topcoat dispersion process also includes a cover 60. The cover 60 corresponds to the open top of the centrifuge chamber 10. When the cover 60 is fitted to the top of the centrifuge chamber 10, a sealed space is formed inside the centrifuge chamber 10 to facilitate the effective centrifugation and degassing process of the liquid in the initial stage. Specifically, the cover 60 is provided with an exhaust door 61 corresponding to the exhaust channel a. When the centrifuge chamber 10 needs to be vented, the exhaust door 61 can be opened to vent.
[0035] Furthermore, the bubble removal device 1 used in the UV topcoat dispersion process also includes a connecting structure 70, which is disposed at the bottom end of the rotating shaft 30; the first dispersion structure and the second dispersion structure 50 are respectively connected to the rotating shaft 30 through the connecting structure 70. Specifically, the connecting structure 70 is configured as a disc-shaped structure, and the connecting center of the connecting structure 70 is sleeved to the bottom end of the rotating shaft 30; based on the above configuration, the second dispersion structure 50 is correspondingly sleeved to the edge of the connecting structure 70; the bottom end of each shearing unit 40 is connected to the surface of the connecting structure 70 with a preset installation direction, so that the rotating shaft 30 can synchronously drive several shearing units 40 and the second dispersion structure 50 to rotate through the connecting structure 70. In one embodiment, specifically, the edge of each shearing unit 40 facing the rotating shaft 30 is spaced apart from the rotating shaft 30 by a preset distance, so that a columnar exhaust channel a is formed between several shearing units 40 based on the rotation center, so as to form a columnar low-pressure zone during the liquid degassing process, so that the gas released in the liquid can be collected in the exhaust channel a to complete the exhaust.
[0036] Furthermore, each shearing unit 40 includes a honeycomb plate 41 and a frame 42. The honeycomb plate 41 is fitted inside the frame 42, and the bottom end of the frame 42 is connected to a corresponding connection point on the surface of the connecting structure 70, thereby forming a stable shearing structure. In one embodiment, the frame 42 is a square frame 42. In another embodiment, each shearing unit 40 also includes a reinforcing structure 43, which is fitted onto the outside of the frame 42 to further strengthen the structural strength of the shearing unit 40 and ensure the stability of the stirring process.
[0037] In one embodiment, specifically, the first dispersing unit includes four shearing units 40; in another embodiment, more specifically, the four shearing units 40 are arranged radially around the pivot 30, and the included angle between adjacent shearing units 40 is set to 45°.
[0038] In one embodiment, specifically, the bottom wall of the centrifuge chamber 10 is set as an inclined plane relative to the direction of gravity; in another embodiment, more specifically, the discharge channel b is set at the lower end of the bottom wall of the centrifuge chamber 10 so that the degassed material can be discharged from the discharge channel b under the action of gravity.
[0039] In summary, the bubble removal device for the UV topcoat dispersion process disclosed in this utility model drives the first dispersion structure and the second dispersion structure to rotate by a drive motor. While providing centrifugal force to the UV topcoat material, it also enhances its fluid shear force to improve defoaming ability. Specifically, the drive motor can simultaneously drive the first and second dispersion structures to rotate. Several shearing units stir the liquid in the centrifuge chamber. At this time, the shearing units work together with the components of the second dispersion structure to create a combined centrifugal force field. While fully dispersing the liquid material, the liquid is also discharged through the mesh of the second dispersion structure to the discharge space outside the second dispersion structure. During this process, while the second dispersion structure provides the main centrifugal force to drive the liquid to move outward, its mesh structure can prevent the backflow of incompletely defoamed liquid, ensuring that only the defoamed liquid is discharged through the mesh. The accumulated bubbles migrate towards the central low-pressure area under the action of centrifugal force and finally escape to the outside of the device through the exhaust structure of the centrifuge chamber. In addition, the rotation of the second dispersion structure can stabilize the liquid flow pattern, reduce turbulence, and avoid the generation of secondary bubbles. Based on this, the bubble removal device for the UV topcoat dispersion process of this utility model can greatly improve the liquid defoaming effect and increase the defoaming efficiency.
[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A bubble removal device for a UV topcoat dispersion process, characterized in that, include: The centrifuge chamber, drive motor, rotating shaft, first dispersion structure, and second dispersion structure are included. The drive motor is located at the bottom of the centrifuge chamber, and its output shaft extends through the centrifuge chamber and drives the rotating shaft. The first dispersion structure and the second dispersion structure are both housed within the centrifuge chamber and are respectively connected to the rotating shaft. The first dispersion structure includes several shearing units, which are arranged radially and at equal angles around the rotating shaft and are respectively connected to the side surface of the rotating shaft; the second dispersion structure is a mesh outer cylinder, which is sleeved around the rotating shaft on the outer periphery of the several shearing units, and the second dispersion structure is spaced at a preset distance from the inner wall of the centrifuge chamber to form a discharge space.
2. The bubble removal device for the UV topcoat dispersion process according to claim 1, characterized in that, Each shearing unit is configured as a honeycomb mesh panel.
3. The bubble removal device for UV topcoat dispersion processes of claim 2, wherein, The centrifuge chamber is equipped with an exhaust channel and a discharge channel. The exhaust channel is located at the geometric center of the centrifuge chamber and extends along the rotation axis from the main body of the centrifuge chamber to the top of the centrifuge chamber. The discharge channel is located on the side wall surface at the bottom of the centrifuge chamber and connects to the outside of the centrifuge chamber.
4. The bubble removal device for the UV topcoat dispersion process according to claim 3, characterized in that, The top of the centrifuge chamber is set to be open. Based on this, the bubble removal device used in the UV topcoat dispersion process also includes a cover, which corresponds to and fits with the open top of the centrifuge chamber.
5. The bubble removal device for the UV topcoat dispersion process according to claim 4, characterized in that, The cover is equipped with an exhaust valve corresponding to the exhaust channel.
6. The bubble removal device for the UV topcoat dispersion process according to claim 5, characterized in that, The bubble removal device used in the UV topcoat dispersion process also includes a connecting structure, which is located at the bottom of the rotating shaft; the first dispersion structure and the second dispersion structure are respectively connected to the rotating shaft through the connecting structure.
7. The bubble removal device for the UV topcoat dispersion process according to claim 6, characterized in that, The connecting structure is set as a disc-shaped structure, and the joint center of the connecting structure is sleeved to the bottom end of the rotating shaft; the second dispersive structure is correspondingly sleeved to the edge of the connecting structure; the bottom end of each shearing unit is connected to the surface of the connecting structure in a preset installation direction.
8. The bubble removal device for the UV topcoat dispersion process according to claim 7, characterized in that, Each shearing unit is spaced a predetermined distance from the rotating shaft on one side edge, thereby forming a columnar exhaust channel between several shearing units based on the rotation center.
9. The bubble removal device for the UV topcoat dispersion process according to claim 8, characterized in that, Each shearing unit includes a honeycomb panel and a frame. The honeycomb panel is fitted inside the frame, and the bottom end of the frame is connected to the corresponding connection point on the surface of the connecting structure.
10. The bubble removal device for the UV topcoat dispersion process according to claim 9, characterized in that, The bottom wall of the centrifuge chamber is set as an inclined plane relative to the direction of gravity.