Coating stirring device

Abstract

This application relates to the field of coating experimental apparatus and discloses a coating mixing device. The device includes a mixing container, a mixing mechanism, an ultrasonic transmitter, and an ultrasonic receiver. The mixing mechanism is used to mix the coating contained in the mixing container; the ultrasonic transmitter emits ultrasonic waves into the coating contained in the mixing container, and the ultrasonic waves are reflected by the coating to form reflected waves; the ultrasonic receiver receives the reflected waves. This coating mixing device facilitates efficient coating dispersion operations, improving coating dispersion efficiency and product quality.

Description

Technical Field

[0001] This application pertains to coating experimental apparatus, specifically to coating mixing apparatus. Background Technology

[0002] Coating dispersion is a crucial step in coating product development, and high-speed dispersers are currently the mainstream mixing equipment. They utilize the shear force generated by a high-speed rotating rotor to break down and homogenize coating particles. However, in practical applications, these mixing devices still have significant drawbacks: First, there is the problem of dead zone residue: the high-speed rotor creates a high-shear zone in the center of the container, but "low-shear dead zones" (such as coating buildup on the container walls) are created at the edges and bottom due to flow rate attenuation, requiring manual intervention and significantly reducing coating dispersion efficiency. Second, there is the challenge of bubble elimination: high-speed mixing easily entrains air into the liquid coating, requiring defoamers or vibration devices for defoaming, but these methods cannot eliminate bubbles in real time, especially for high-viscosity coatings, where the amount of residual bubbles is large, affecting product quality. Third, there is a lag in fineness detection: the dispersion effect of coating particles relies on manual sampling to detect particle fineness, causing processing interruptions and also reducing dispersion efficiency. Utility Model Content

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, this application provides a coating mixing device to achieve efficient coating dispersion operations and improve coating dispersion efficiency and product quality.

[0004] To achieve the above objectives, this application provides a paint mixing device, the paint mixing device comprising:

[0005] Stirring container;

[0006] A stirring mechanism for stirring the coating contained in the stirring container;

[0007] An ultrasonic transmitter is used to emit ultrasonic waves toward a coating contained in the stirring container, the ultrasonic waves being reflected by the coating to form reflected waves.

[0008] An ultrasonic receiver is used to receive the reflected waves.

[0009] In some embodiments, a high-shear region and a low-shear region are formed within the stirring container, and the ultrasonic transmitter is used to emit ultrasonic waves toward the low-shear region to drive the coating material located in the low-shear region toward the high-shear region.

[0010] In some embodiments, the ultrasonic transmitter is a periodic ultrasonic transmitter.

[0011] In some embodiments, the ultrasonic waves emitted by the ultrasonic transmitter have a frequency of 20 kHz to 40 kHz.

[0012] In some embodiments, the paint mixing device includes:

[0013] An ultrasonic processing module is used to calculate the fineness of the coating based on the received reflected wave;

[0014] The controller communicates with the ultrasonic processing module and is configured to:

[0015] Determine that the fineness of the coating reaches the preset fineness;

[0016] Control the shutdown of the stirring mechanism and the ultrasonic transmitter.

[0017] In some embodiments, the paint mixing device further includes:

[0018] A heating element for heating the coating in the mixing container;

[0019] A temperature sensor is used to detect the temperature of the coating.

[0020] In some embodiments, the controller communicates with both the heating assembly and the temperature sensor and is configured to:

[0021] Determine that the temperature of the coating reaches the preset temperature;

[0022] Control the shutdown of the heating component.

[0023] In some embodiments, the stirring mechanism includes:

[0024] Agitator blades;

[0025] A rotation drive assembly for rotating and driving the stirring blades;

[0026] A resistance sensor is disposed in the stirring blade and is used to detect the resistance of the stirring blade.

[0027] In some embodiments, the controller communicates with both the rotation drive assembly and the resistance sensor and is configured to:

[0028] The resistance of the stirring blades is determined to be lower than the preset resistance.

[0029] Control the rotation drive assembly to increase the rotational speed;

[0030] The resistance of the stirring blades is determined to be higher than the preset resistance.

[0031] Control the rotation drive assembly to reduce the rotation speed.

[0032] In some embodiments, the paint mixing device includes:

[0033] The base has a container holding position;

[0034] A clamp is provided on the base and is used to clamp the stirring container placed in the container support position.

[0035] Through the above technical solution, the paint mixing device of this application can use an ultrasonic transmitter to emit ultrasonic waves into the paint in the mixing container. Under the vibration of the ultrasonic waves, the paint accumulated in local areas of the mixing container can be effectively dispersed, thereby improving the uniformity of the paint and eliminating the trouble of manual intervention, thus improving the efficiency of paint dispersion. At the same time, during the propagation of ultrasonic waves in the paint, the air bubbles in the paint can generate a cavitation effect, accelerating the bursting and escape of the air bubbles, thereby effectively reducing the residual amount of air bubbles and improving the quality of the paint product. In addition, the ultrasonic receiver works in conjunction with the ultrasonic transmitter. The ultrasonic receiver receives the reflected waves reflected by the paint particles in real time, which helps to analyze the fineness of the paint particles using the reflected waves. There is no need for manual sampling to detect the fineness of the paint, effectively solving the problem of data acquisition lag, further improving the efficiency of paint dispersion, and facilitating precise control of the fineness of the paint particles.

[0036] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:

[0038] Figure 1 This is a schematic diagram of a paint mixing device according to a specific embodiment of this application;

[0039] Figure 2 for Figure 1 A schematic diagram of the other side of the paint mixing device.

[0040] Explanation of reference numerals in the attached figures

[0041] Detailed Implementation

[0042] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0043] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0044] like Figure 1 and Figure 2 As shown in the exemplary embodiment of this application, a paint mixing device is provided, which includes a mixing container 1, a mixing mechanism 2, an ultrasonic transmitter 3, and an ultrasonic receiver 4. Specifically, the mixing container 1 is used to load paint, the mixing mechanism 2 is used to mix the paint contained in the mixing container 1, the ultrasonic transmitter 3 is used to emit ultrasonic waves to the paint contained in the mixing container 1, the ultrasonic waves are reflected by the paint to form reflected waves, and the ultrasonic receiver 4 is used to receive the reflected waves.

[0045] Reference Figure 1 The mixing container 1 can be a mixing cylinder with an open top, and the mixing mechanism 2 can be a disperser. The mixing shaft of the mixing mechanism 2 extends downward into the mixing container 1. The ultrasonic transmitter 3 and the ultrasonic receiver 4 can both be set on the top of the mixing mechanism 2. The ultrasonic transmitter 3 emits ultrasonic waves from the top opening of the mixing container 1 toward the interior of the mixing container 1.

[0046] During the high-speed stirring and dispersion of the coating in the stirring container 1 by the stirring mechanism 2, a high shear force area is formed in the central area of ​​the stirring container 1, while a low shear force area is formed in the edge area due to the slower flow rate of the coating. The coating particles in the low shear force area cannot be fully dispersed, resulting in particle aggregation, and even residue on the wall. This phenomenon is even more serious when using a large-volume stirring container 1 or when processing coatings with high viscosity.

[0047] In this embodiment, the paint mixing device can emit ultrasonic waves to the paint using the ultrasonic transmitter 3 when the mixing mechanism 2 is performing the mixing operation. This allows the ultrasonic waves to vibrate the paint accumulation area, dispersing the accumulated paint and allowing it to enter the high shear force region for shearing and refining. This effectively assists the mixing operation of the mixing mechanism 2, achieving an ultra-fine dispersion level that is difficult to achieve with traditional mixing devices, improving dispersion efficiency, and eliminating the trouble of manual intervention to disperse the paint.

[0048] Meanwhile, when ultrasound propagates in liquid coatings, it generates a cavitation effect, creating alternating high-pressure and low-pressure regions. During the low-pressure half-cycle, bubbles in the coating rapidly expand, forming larger bubbles. In the subsequent high-pressure half-cycle, these expanding bubbles are violently compressed and burst instantaneously, generating strong shock waves and microjets. This causes bubbles around the burst point (such as those attached to the container wall) to rupture or collide and merge, overflowing from the coating surface. Compared to waiting for bubbles to rise naturally or introducing defoamers that may contaminate the product, the coating stirring device of this application can efficiently, quickly, non-contactly, and without contamination promote the removal of bubbles from the coating, reducing the bubble content in the coating and improving the quality of the coating product.

[0049] Furthermore, when ultrasonic waves encounter coating particles of varying fineness, the difference in acoustic impedance between the coating particles and the solvent causes the ultrasonic waves to be reflected, forming reflected waves that alter the signal characteristics at the receiving end. Therefore, by setting up an ultrasonic receiver 4 to receive the reflected waves from the coating particles in real time, it is possible to analyze the fineness of the coating particles using these reflected waves. This eliminates the need for manual sampling and testing of coating fineness, effectively addressing the lag in data acquisition, further improving the efficiency of coating dispersion operations, and facilitating precise control of coating particle fineness.

[0050] When a high-shear force region and a low-shear force region are formed within the mixing container 1, the ultrasonic transmitter 3 emits ultrasonic waves towards the low-shear force region to drive the coating material located in the low-shear force region towards the high-shear force region. This prioritizes the dispersion of the coating material in the low-shear force region, preventing accumulation. Of course, the ultrasonic transmitter 3 can simultaneously emit ultrasonic waves towards both the high-shear force region and the low-shear force region. The sound pressure of the ultrasonic waves applies a periodic force to the coating particles, thereby intensifying the vibration of the coating particles in the high-shear force region and making them easier to disperse.

[0051] To appropriately control the energy input of ultrasound into the coating, in one embodiment, the ultrasonic transmitter 3 is a periodic ultrasonic transmitter, capable of generating intermittent, pulsed ultrasound waves through intermittent operation. Thus, during the operation of the ultrasonic transmitter 3, coating particles can be effectively dispersed, and a cavitation effect can be generated, breaking down or agglomerating bubbles in the coating; during periods of inactivity, the cavitation effect can be stopped, preventing the continuous generation of new bubbles, allowing large, already agglomerated bubbles sufficient time to overflow to the surface under buoyancy, and effectively reducing the coating temperature. Compared to using an ultrasonic transmitter that generates continuous waves, using a periodic ultrasonic transmitter consumes energy only during the phase requiring active bubble breaking and agglomeration, saving energy during the natural bubble rising phase, which significantly improves overall energy utilization efficiency.

[0052] In one embodiment, the ultrasonic transmitter 3 emits ultrasonic waves at a frequency of 20kHz to 40kHz. Within this frequency range, low-frequency sound waves can generate powerful shock waves, which can efficiently break up large particle agglomerates, while high-frequency sound waves can improve the crushing precision of small particles and reduce the risk of over-crushing. Overall, it can meet the dispersion needs of multi-scale particles and improve the bubble elimination rate.

[0053] In one embodiment, such as Figure 2 As shown, the paint mixing device includes:

[0054] An ultrasonic processing module is used to calculate the fineness of the coating based on the received reflected waves;

[0055] Controller 5 communicates with the ultrasonic processing module and is configured as follows:

[0056] Ensure the coating fineness meets the preset fineness;

[0057] Control the shutdown of the stirring mechanism and ultrasonic transmitter 3.

[0058] In this embodiment, the ultrasonic processing module (not shown in the figures) communicates with the ultrasonic receiver 4. When the ultrasonic receiver 4 receives the reflected wave, the ultrasonic processing module can analyze the reflected wave signal and calculate the real-time particle size of the coating through changes in acoustic impedance. The controller 5 communicates with the ultrasonic processing module to receive the real-time fineness calculated by the ultrasonic processing module and compares the real-time fineness with the preset fineness. When the real-time fineness reaches the preset fineness, the controller 5 can control the coating stirring device and the ultrasonic transmitter 3 to shut down, avoiding excessive particle refinement and dispersion due to over-stirring and energy waste. In practical applications, users can set the fineness target value through the controller 5, which can be used as the shutdown criterion for the coating stirring device.

[0059] In one embodiment, such as Figure 1 As shown, the paint mixing device also includes a heating component 6 and a temperature sensor. The heating component 6 heats the paint in the mixing container 1; heating significantly reduces the flow resistance of high-viscosity paint, promotes component dissolution and dispersion, and improves mixing efficiency. The temperature sensor detects the temperature of the paint, providing a basis for precise temperature control.

[0060] It should be noted that this application does not limit the type of heating component 6, such as a resistance wire, a semiconductor heating element, an electromagnetic induction heating component, an infrared radiation heating component, etc. Figure 1 As shown, the heating component 6 can be installed in the base 7 of the paint mixing device and has a heating panel, so that the mixing container 1 can be placed on the heating panel for heating.

[0061] Furthermore, the controller 5 communicates with the heating assembly 6 and the temperature sensor respectively and is configured as follows:

[0062] Ensure the coating temperature reaches the preset temperature;

[0063] Control the shutdown of heating component 6.

[0064] Therefore, by acquiring temperature data from the temperature sensor through the controller 5, the controller 5 can control the heating component 6 to stop heating when the temperature of the coating reaches the preset temperature, thus preventing the coating temperature from becoming too high.

[0065] In one embodiment, the stirring mechanism 2 includes stirring blades 201, a rotation drive assembly 202, and a resistance sensor. The rotation drive assembly 202 has a stirring shaft and a rotation drive component. The stirring blades 201 are mounted on the stirring shaft, and the rotation drive component drives the stirring shaft to rotate, thereby causing the stirring blades 201 to rotate. The resistance sensor is disposed in the stirring blades 201 and is used to detect the resistance of the stirring blades 201, thereby enabling real-time monitoring of the dispersion state of the coating. When the resistance sensor detects a high resistance, it means that the coating dispersion is low; therefore, the rotation speed of the rotation drive assembly 202 can be appropriately increased to improve dispersion efficiency. Conversely, when the resistance sensor detects a low resistance, it means that the coating dispersion is high; therefore, the rotation speed of the rotation drive assembly 202 can be appropriately decreased to reduce energy consumption.

[0066] Furthermore, the controller 5 communicates with and is configured to communicate with the rotation drive assembly 202 and the resistance sensor respectively, and is configured as follows:

[0067] It is determined that the resistance of the stirring blade 201 is lower than the preset resistance;

[0068] Control the rotation drive assembly 202 to increase the rotational speed;

[0069] It is determined that the resistance of the stirring blade 201 is higher than the preset resistance;

[0070] The rotation drive assembly 202 is controlled to reduce the rotation speed.

[0071] Therefore, by acquiring the resistance data from the resistance sensor through the controller 5, the controller 5 can control the rotation speed of the rotation drive assembly 202 based on the real-time resistance of the stirring blade 201, thereby realizing the automatic adjustment of the rotation drive assembly 202 and improving the accuracy of speed control.

[0072] In one embodiment, such as Figure 1 As shown, the paint mixing device includes a base 7 and a clamp 8. The base 7 has a container support position, allowing the mixing container 1 to be placed directly and stably on the base 7. The clamp 8 is mounted on the base 7 and is used to clamp the mixing container 1 placed on the container support position. Specifically, the clamp 8 may include multiple bushings and multiple positioning shafts (such as...). Figure 2 The device may be equipped with two bushings and two positioning shafts. Multiple bushings are arranged sequentially at intervals around the container bearing position. Multiple positioning shafts are movably inserted into multiple bushings. By adjusting the relative positions between multiple positioning shafts, multiple positioning shafts can jointly clamp the mixing container 1 placed in the container bearing position, ensuring that the mixing container 1 will not shake or shift during the mixing operation, thus ensuring operational safety.

[0073] In the description of this application, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between components; 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0076] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A paint mixing device, characterized in that, The coating mixing device includes: Stirring container (1); A stirring mechanism (2) is used to stir the coating contained in the stirring container (1); An ultrasonic transmitter (3) is used to emit ultrasonic waves into the coating contained in the stirring container (1), the ultrasonic waves being reflected by the coating to form reflected waves; An ultrasonic receiver (4) is used to receive the reflected wave.

2. The paint mixing device according to claim 1, characterized in that, The mixing container (1) has a high shear force region and a low shear force region. The ultrasonic transmitter (3) is used to emit ultrasonic waves into the low shear force region to drive the coating material located in the low shear force region to move toward the high shear force region.

3. The paint mixing device according to claim 1, characterized in that, The ultrasonic transmitter (3) is a periodic ultrasonic transmitter.

4. The paint mixing device according to claim 1, characterized in that, The ultrasonic transmitter (3) emits ultrasonic waves at a frequency of 20 kHz to 40 kHz.

5. The paint mixing device according to any one of claims 1 to 4, characterized in that, The coating mixing device includes: An ultrasonic processing module is used to calculate the fineness of the coating based on the received reflected wave; The controller (5) communicates with the ultrasonic processing module and is configured to: Determine that the fineness of the coating reaches the preset fineness; Control the shutdown of the stirring mechanism (2) and the ultrasonic transmitter (3).

6. The paint mixing device according to claim 5, characterized in that, The coating mixing device also includes: Heating component (6) for heating the coating in the stirring container (1); A temperature sensor is used to detect the temperature of the coating.

7. The paint mixing device according to claim 6, characterized in that, The controller (5) communicates with the heating assembly (6) and the temperature sensor respectively and is configured to: Determine that the temperature of the coating reaches the preset temperature; Control the shutdown of the heating component (6).

8. The paint mixing device according to claim 5, characterized in that, The stirring mechanism (2) includes: Stirring blades (201); Rotation drive assembly (202) is used to rotate and drive the stirring blade (201). A resistance sensor is disposed in the stirring blade (201) and is used to detect the resistance of the stirring blade (201).

9. The paint mixing device according to claim 8, characterized in that, The controller (5) communicates with the rotation drive assembly (202) and the resistance sensor respectively and is configured to: It is determined that the resistance of the stirring blade (201) is lower than the preset resistance; Control the rotation drive assembly (202) to increase the rotational speed; It is determined that the resistance of the stirring blade (201) is higher than the preset resistance; Control the rotation drive assembly (202) to reduce the rotation speed.

10. The paint mixing apparatus according to any one of claims 1 to 4, characterized in that, The coating mixing device includes: The base (7) is provided with a container holding position; A clamp (8) is provided on the base (7) and is used to clamp the stirring container (1) placed in the container support position.

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