Defoaming device for adhesive fluid delivery

Abstract

The utility model provides a defoaming device for adhesive fluid conveying. Specifically, the bubble removing device comprises: a bubble detection part, which is provided with a bubble detector and a fluid channel, and the fluid channel is provided with an inlet and an outlet; the three-way valve is provided with a first end, a second end and a third end; the liquid storage device is provided with a liquid inlet, a liquid outlet and a guide pipe, the first end of the three-way valve is connected with the outlet of the fluid channel, and the second end of the three-way valve is connected with the liquid inlet of the liquid storage device; a liquid inlet of the liquid storage device is located in the upper surface of the liquid storage device and connected with the second end of the three-way valve, a liquid outlet of the liquid storage device is located in the lower surface of the liquid storage device, and a guide pipe of the liquid storage device is in airtight connection with the liquid inlet and extends to the position close to the inner lower surface of the liquid storage device from top to bottom. According to the bubble removing device disclosed by the utility model, bubbles entrained in adhesive fluid can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of adhesive fluid transportation, in particular to a defoaming device used for adhesive fluid transportation. Background Art

[0002] As the adhesive fluid passes through the dispensing system, air bubbles contained within the adhesive fluid can cause tiny voids or discontinuities in the fluid bead or stream, which can create aesthetic defects in the potting compound, increase the risk of dielectric breakdown, reduce the bond strength of the adhesive, affect the ratios of two-component adhesives, and lead to air leaks or reduced waterproofing performance of the device.

[0003] The formation of bubbles in adhesive fluids is usually related to factors such as fluid formulation, manufacturing process, packaging and sealing, transportation and storage, and fluid application process. It is difficult to completely avoid the generation of bubbles before the adhesive fluid is applied to the delivery system.

[0004] Although the prior art has disclosed the use of online vacuum degassing systems to reduce or eliminate bubbles in adhesive fluids, online vacuum degassing systems generally incur high equipment and process costs and may not be applicable to all types of fluids.

[0005] Therefore, it is of great significance to develop an effective and low-cost degassing system. Utility Model Content

[0006] In response to the technical problems outlined above, one of the objectives of the present invention is to provide a debubbling device for adhesive fluid delivery. The debubbling device of the present invention can effectively reduce bubbles entrained in the adhesive fluid, thereby resolving issues caused by bubbles during fluid delivery, such as aesthetic defects, potential risk of dielectric failure, reduced bond strength, imbalanced two-component adhesive ratios, air leakage, or decreased waterproofing performance of the equipment.

[0007] Specifically, the utility model provides a defoaming device for conveying adhesive fluid, characterized in that the defoaming device comprises:

[0008] a bubble detection portion having a bubble detector and a fluid channel having an inlet and an outlet;

[0009] A three-way valve having a first end, a second end, and a third end; and

[0010] a liquid reservoir having a liquid inlet, a liquid outlet, and a conduit,

[0011] in:

[0012] The first end of the three-way valve is connected to the outlet of the fluid channel, and the second end of the three-way valve is connected to the liquid inlet of the liquid reservoir; and

[0013] The liquid inlet of the liquid reservoir is located on the upper surface of the liquid reservoir and is connected to the second end of the three-way valve, the liquid outlet of the liquid reservoir is located on the lower surface of the liquid reservoir, and the conduit of the liquid reservoir is air-tightly connected to the liquid inlet and extends from top to bottom to near the inner lower surface of the liquid reservoir.

[0014] Compared with the prior art, the defoaming device for adhesive fluid delivery according to the present invention has the following advantages:

[0015] 1. This utility model provides a cost-effective solution as it aims to reduce equipment and process costs while providing effective bubble detection and removal capabilities. This is a significant advantage for applications requiring precise fluid delivery.

[0016] 2. The debubbling device of this utility model can be controlled by software, and bubble data can be viewed and analyzed in real time. When the bubble frequency or size exceeds the predetermined specifications, an alarm is issued and the fluid flow direction is controlled to ensure that only fluid that meets the standards is delivered to the next process;

[0017] 3. The software-controlled three-way valve can precisely control the flow direction of the fluid, directing the fluid with low bubble content to the reservoir and the fluid with high bubble content to recycling or disposal, thereby improving the quality of the fluid;

[0018] 4. The design of the soft liquid reservoir helps to further remove bubbles during fluid delivery, ensuring a continuous supply of fluid, and helps to remove possible bubbles during fluid storage;

[0019] 5. The vacuum level in the soft reservoir can be customized based on the fluid flow rate, which provides additional flexibility to accommodate different production needs and process conditions;

[0020] 6. The bubble detection window (i.e., transparent window) is designed to take into account different fluid types, viscosities, and flow rates, and its height and size range are wide to accommodate different application requirements;

[0021] 7. The present invention can preferably use ultrasonic technology for bubble detection. This technology is not affected by the color or viscosity of the fluid and can more accurately detect the number and size of bubbles. Compared with optical charge-coupled device (CCD) bubble detection systems, this has wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a structural schematic diagram of a defoaming device for adhesive fluid delivery according to one embodiment of the present utility model. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It will be appreciated that other embodiments are contemplated and may be implemented without departing from the scope or spirit of the present invention. Therefore, the following detailed description is non-limiting.

[0024] Unless otherwise indicated, all numbers used in the present specification and claims to indicate feature sizes, quantities, and physicochemical properties should be understood as being modified in all cases by the term "about". Therefore, unless otherwise indicated, the numerical parameters listed in the above description and the appended claims are approximate values, and those skilled in the art will be able to appropriately change these approximate values ​​by utilizing the teachings disclosed herein to seek to obtain the desired properties. The use of numerical ranges expressed as endpoints includes all numbers within the range and any range within the range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4 and 5, etc.

[0025] As described above, the technical problem addressed by the present invention is how to effectively detect and remove bubbles in fluid delivery systems, particularly during the precise dispensing and delivery of adhesive fluid materials. The presence of bubbles can lead to a variety of problems, including but not limited to: discontinuity in fluid delivery, aesthetic defects, risk of dielectric breakdown, reduced bond strength, imbalanced two-component adhesive ratios, and decreased equipment performance.

[0026] Specifically, the utility model provides a defoaming device for conveying adhesive fluid, characterized in that the defoaming device comprises:

[0027] a bubble detection portion having a bubble detector and a fluid channel having an inlet and an outlet;

[0028] A three-way valve having a first end, a second end, and a third end; and

[0029] a liquid reservoir having a liquid inlet, a liquid outlet, and a conduit,

[0030] in:

[0031] The first end of the three-way valve is connected to the outlet of the fluid channel, and the second end of the three-way valve is connected to the liquid inlet of the liquid reservoir; and

[0032] The liquid inlet of the liquid reservoir is located on the upper surface of the liquid reservoir and is connected to the second end of the three-way valve, the liquid outlet of the liquid reservoir is located on the lower surface of the liquid reservoir, and the conduit of the liquid reservoir is air-tightly connected to the liquid inlet and extends from top to bottom to near the inner lower surface of the liquid reservoir.

[0033] Specifically, the debubbling device according to the present invention comprises three main parts: a bubble detection unit, a three-way valve and a soft liquid reservoir, which work together to detect and remove bubbles in the adhesive fluid.

[0034] Figure 1 FIG. 1 is a schematic structural diagram of a defoaming device 1 for conveying adhesive fluid according to an embodiment of the present invention. Figure 1 As shown in the figure, the debubbling device 1 includes: a bubble detection part 2, a three-way valve 3 and a liquid reservoir 4. The bubble detection part 2 has a bubble detector 5 and a fluid channel 6, and the fluid channel has an inlet 7 and an outlet 8. The three-way valve has a first end a, a second end b and a third end c. The liquid reservoir 4 has a liquid inlet 9, a liquid outlet 10 and a conduit 11. The first end a of the three-way valve 3 is connected to the outlet 8 of the fluid channel 6, and the second end b of the three-way valve 3 is connected to the liquid inlet 9 of the liquid reservoir 4. In addition, the liquid inlet 9 of the liquid reservoir 4 is located on the upper surface of the liquid reservoir 4 and is connected to the second end b of the three-way valve 3, the liquid outlet 10 of the liquid reservoir 4 is located on the lower surface of the liquid reservoir 4, and the conduit 11 of the liquid reservoir 4 is airtightly connected to the liquid inlet 9 and extends from top to bottom to near the inner lower surface of the liquid reservoir 4. The liquid reservoir 4 has one or more exhaust valves 12 at the edge of its upper surface. Reference numerals “A”, “B” and “C” indicate the flow direction of the adhesive fluid.

[0035] According to certain preferred embodiments of the present invention, a debubbling device for adhesive fluid delivery includes a reservoir, preferably a soft reservoir. The reservoir is designed to store adhesive fluid during delivery, ensuring a continuous fluid supply even when the three-way valve is switched to the recovery or disposal direction B. During the adhesive fluid storage process, the reservoir also helps further remove any air bubbles that may be present. Because a vacuum environment can be created within the reservoir, bubbles in the fluid rise to the top of the reservoir due to the pressure differential and are expelled through the exhaust valve. Preferably, the reservoir is made of a transparent material, allowing the operator to visually observe the state of bubbles in the fluid, facilitating monitoring and control of the debubbling process. The reservoir can withstand high pressures of 0.1 MPa to 0.7 MPa and has a low vacuum resistance of 0.2 kPa to 0.1 MPa. This allows the reservoir to remove bubbles under vacuum while ensuring stable fluid delivery under high pressure. Preferably, the reservoir is a soft plastic or rubber container. More preferably, the reservoir is a plastic or rubber bag. Most preferably, the reservoir is a soft vacuum bag. The reservoir design ensures continuous adhesive fluid delivery, ensuring uninterrupted fluid supply even during degassing, which is particularly important for fluid dispensing systems requiring continuous operation. Preferably, one or more vent valves are designed into the top corners of the reservoir to expel air bubbles during the fluid filling process, further ensuring fluid purity.

[0036] Controlling the volume of the reservoir within a specific range is crucial for debubbling the adhesive fluid. By controlling the volume of the reservoir, it is possible to ensure that there is sufficient space for bubbles to separate out within the adhesive fluid, thereby improving the efficiency of bubble removal. Preferably, the internal volume of the reservoir is within the range of 0.1 liter to 1 liter. If the volume is less than 0.1 liter, the adhesive fluid may not be able to fully separate out bubbles, making it difficult to effectively remove the bubbles. If the volume is greater than 1 liter, the adhesive fluid may remain in the reservoir for an extended period of time or partially settle, thereby affecting production efficiency and reducing product quality.

[0037] According to certain preferred embodiments of the present invention, the distance between the lower end of the conduit and the lower surface of the interior of the reservoir is controlled within a specific range to further enhance the debubbling effect on the adhesive fluid. The viscosity of the adhesive fluid is generally higher than that of water, and tiny bubbles may form when dripping from the lower end of the conduit. To prevent bubbles from forming during the dripping process of the adhesive fluid, the distance between the lower end of the conduit and the lower surface of the interior of the reservoir is preferably less than or equal to 3 mm. More preferably, the distance between the lower end of the conduit and the lower surface of the interior of the reservoir is within a range of 0.2-3 mm.

[0038] Preferably, the liquid reservoir is a cylindrical container, a cubic container or a rectangular parallelepiped container. More preferably, the liquid reservoir is a cylindrical container with rounded corners, a cubic container with rounded corners or a rectangular parallelepiped container with rounded corners. The rounded corners help the adhesive fluid flow more smoothly inside the liquid reservoir, reducing the generation of bubbles and fluid retention caused by turbulence or eddy currents at the corners. This helps to improve the defoaming efficiency and the uniformity of the fluid. In addition, the rounded corner design can reduce stress concentration at the corners of the container, which is particularly important when subjected to internal pressure. Stress concentration may lead to material fatigue and structural failure, while the rounded corners improve the durability and reliability of the container by dispersing stress.

[0039] According to the technical solution of the present invention, a bubble detection unit is used to detect the number and size of bubbles in the adhesive fluid. When the frequency or size of the detected bubbles exceeds the preset specifications, the system can sound an alarm to prompt the operator to take measures, such as adjusting the fluid processing parameters or performing defoaming treatment. The flow direction of the adhesive fluid can be manually or automatically controlled through a three-way valve based on the detection results of the bubble detection unit. For example, when too many bubbles are detected, the fluid can be manually or automatically directed to a soft vacuum bag for defoaming treatment through a three-way valve. Through precise bubble detection, the defoaming device for adhesive fluid delivery according to the utility model can ensure that only adhesive fluid with a low bubble content is delivered to the next process, thereby improving the efficiency of the entire fluid processing system and the quality of the final product.

[0040] According to the technical solution of the present invention, the bubble detection unit comprises a bubble detector and a fluid channel. Preferably, the bubble detector is an ultrasonic bubble detector or a charge coupled device (CCD) bubble detector.

[0041] The principle of an ultrasonic bubble detector is based on the fact that when ultrasonic waves propagate through a fluid and encounter bubbles, they produce a specific acoustic response. Specifically, the ultrasonic transducer (probe) in the detector emits high-frequency ultrasonic waves into the adhesive fluid. When bubbles are present in the fluid, ultrasonic waves propagate through the fluid, acting as obstacles in the sound wave propagation path. When ultrasonic waves encounter bubbles, part of the sound wave is reflected back by the bubble surface, while another part may be scattered around the bubble. The size, shape, and number of bubbles affect the characteristics of the reflected and scattered sound waves. The received signal is converted into an electrical signal and processed and analyzed by the electronic system within the detector. By analyzing the characteristics of the reflected and scattered ultrasonic signals, such as frequency, amplitude, phase, and time delay, the detector can identify the presence of bubbles in the fluid and measure their size and number. The software within the detector further analyzes the received data to determine the distribution and concentration of the bubbles. A specific example of an ultrasonic bubble detector that can be used in the present invention is the BG series bubble detector produced by Shanghai Xunyin Technology Co., Ltd. Preferably, when the bubble detector is an ultrasonic bubble detector, the fluid channel is a transparent cylindrical channel. More preferably, the inner diameter of the transparent cylindrical channel is in the range of 0.5 cm to 2.5 cm.

[0042] Charge-coupled device (CCD) bubble detectors are primarily based on optical imaging technology and are used to detect bubbles in adhesive fluids. CCD bubble detectors are typically equipped with a light source and lens to illuminate the fluid and capture an image of it. When the fluid flows through the detection window, bubbles appear as distinct bright or dark spots in the image due to differences in refractive index. The CCD sensor converts the optical image formed by the lens into electrical signals. The CCD sensor consists of numerous photosensitive elements, each capable of capturing a single pixel in the image. The CCD sensor converts the captured light signal into electrical charges, which are then sequentially transferred to an output terminal through charge coupling. The charges transferred to the output terminal are converted into a voltage signal and amplified by an amplifier for further processing and analysis. The amplified voltage signal is then converted into a digital signal for analysis by image processing software. The software identifies bubbles based on changes in brightness and color within the image. Using image processing algorithms, the detector can identify bubbles in the image and measure their size, shape, and number. These algorithms can distinguish between bubbles and other possible image features, such as impurities or other fluid components. The detector outputs the bubble detection results in digital form, which can include the number of bubbles, size distribution, or the bubble image itself. In an automated system, the CCD bubble detector can be connected to a control system to automatically adjust the fluid processing process based on the detection results, such as initiating a debubbling procedure or adjusting fluid delivery parameters. Preferably, when the bubble detector is a charge-coupled bubble detector, two relatively parallel transparent windows are disposed on the fluid channel, with the distance between the two transparent windows ranging from 0.3 mm to 4 mm. Preferably, the two transparent windows are shaped like a rounded rectangle or a rounded square. Preferably, the side length of the two transparent windows ranges from 3 mm to 50 mm.

[0043] According to the technical solution of the present invention, a debubbling device for conveying adhesive fluid includes a three-way valve having a first end, a second end, and a third end. Preferably, the third end of the three-way valve is connected to the inlet of the fluid channel; alternatively, the third end of the three-way valve is connected to a waste liquid tank. The three-way valve can control the flow of the adhesive fluid to one of two possible paths. In certain preferred embodiments of the present invention, the three-way valve is connected to a bubble detection unit. Based on the detection results, the three-way valve can direct the adhesive fluid to a soft vacuum bag, a recirculation line, or a waste line. When the bubble detection unit detects that the bubble content in the adhesive fluid exceeds a preset threshold, the three-way valve directs the adhesive fluid to the soft vacuum bag for debubbling to ensure fluid purity. For fluid with a low bubble content, the three-way valve can direct the fluid back to the main fluid pipeline, enabling fluid recycling and reducing resource waste. The three-way valve helps ensure that only fluid that meets quality standards is conveyed to subsequent production or application processes, thereby improving the quality of the final product. Preferably, the three-way valve can be connected to an automated control system for automatic control, improving operational efficiency and reducing manual intervention. When the adhesive fluid needs to be debubbled, the three-way valve ensures a continuous fluid supply without interrupting production. If an abnormality is detected (such as a large number of bubbles or fluid contamination), the three-way valve can quickly direct the adhesive fluid to a waste pipeline, preventing unqualified fluid from entering subsequent processes.

[0044] According to certain preferred technical solutions of the present invention, the bubble detection unit generates a control instruction based on the detection result and sends it to the three-way valve via a communication connection to instruct it to adjust the fluid flow direction. Preferably, the bubble detection unit is connected to the three-way valve in a wired or wireless communication manner.

[0045] According to certain preferred technical solutions of the present invention, the debubble device further comprises a processor unit, which sends a switching instruction to the three-way valve according to the detection results from the bubble detection unit. The processor unit receives data from the bubble detector, including information such as the number, size, and position of bubbles, and performs real-time analysis. Based on the analysis results, the processor unit determines whether it is necessary to adjust the flow direction of the fluid to optimize the debubble effect or ensure the quality of the fluid. The processor unit sends a switching instruction to the three-way valve, instructing the three-way valve to direct the fluid to a suitable path, such as a soft vacuum bag, a recycling pipe, or a waste pipe. Preferably, the processor unit communicates with the bubble detector via a wired or wireless method to receive the detection data. The processor unit is capable of parsing the data format sent by the bubble detector to ensure accurate reading and processing of the data. Preferably, the processor unit can be implemented based on a microcontroller, a PLC (programmable logic controller), or other computing devices. The software of the processor unit needs to be programmed to implement functions such as data processing, decision making, and instruction sending. The processor unit can be equipped with a user interface to allow the operator to monitor the system status, manually adjust settings, or perform troubleshooting. Preferably, the processor unit can be designed to be modular to facilitate integration with other system components (such as bubble detection unit, three-way valve, soft vacuum bag, etc.). In addition, the processor unit needs to be compatible with other components of the debubbling device to ensure the coordinated operation of the entire system.

[0046] The following describes in detail the steps for using the defoaming device for conveying adhesive fluid according to the present invention.

[0047] Install the debubble device on the adhesive fluid transmission path and ensure that all components are correctly connected, including the bubble detection unit, three-way valve and liquid reservoir. Set the detection parameters of the bubble detection unit and the response threshold of the three-way valve according to the characteristics of the adhesive fluid (such as viscosity, flow rate, etc.). Start the fluid pump or other supply equipment to allow the adhesive fluid to flow through the debubble device from direction A. Turn on the bubble detection unit and start monitoring the bubbles in the fluid. During the monitoring process, the bubble detection unit monitors the number and size of bubbles in the adhesive fluid in real time. If the bubble content is lower than the preset threshold, the fluid can continue to flow to the subsequent process. If the bubble content exceeds the threshold, the fluid is directed to a soft vacuum bag for debubble treatment. In the liquid reservoir part, the adhesive fluid enters the liquid reservoir in vacuum, and the structure of the liquid reservoir can promote the rise of bubbles and discharge through the discharge valve.

[0048] If the debubbled fluid meets quality requirements, it can be discharged through the outlet on the surface of the reservoir for further processing. If the bubble content in the fluid is too high to meet the requirements through debubbling, the fluid can be discarded or redirected back to the adhesive fluid leading to the bubble detection unit.

[0049] Through the above steps, the debubbling device of the present invention can efficiently remove bubbles in the fluid, ensure the quality of the fluid, and is suitable for various industrial applications that require precise control of fluid quality.

[0050] The following detailed description is intended to illustrate the present disclosure by way of illustration and not limitation.

[0051] Specific embodiment 1 is a defoaming device for conveying adhesive fluid, characterized in that the defoaming device comprises:

[0052] a bubble detection portion having a bubble detector and a fluid channel having an inlet and an outlet;

[0053] A three-way valve having a first end, a second end, and a third end; and

[0054] a liquid reservoir having a liquid inlet, a liquid outlet, and a conduit,

[0055] in:

[0056] The first end of the three-way valve is connected to the outlet of the fluid channel, and the second end of the three-way valve is connected to the liquid inlet of the liquid reservoir; and

[0057] The liquid inlet of the liquid reservoir is located on the upper surface of the liquid reservoir and is connected to the second end of the three-way valve, the liquid outlet of the liquid reservoir is located on the lower surface of the liquid reservoir, and the conduit of the liquid reservoir is air-tightly connected to the liquid inlet and extends from top to bottom to near the inner lower surface of the liquid reservoir.

[0058] Specific embodiment 2 is a defoaming device according to specific embodiment 1, characterized in that the liquid storage container is a cylindrical container, a cubic container or a rectangular parallelepiped container.

[0059] Specific embodiment 3 is a defoaming device according to specific embodiment 1, characterized in that the liquid storage container is a cylindrical container with rounded corners, a cubic container with rounded corners, or a rectangular parallelepiped container with rounded corners.

[0060] Specific embodiment 4 is a defoaming device according to specific embodiment 1, characterized in that the liquid reservoir has one or more exhaust valves at the edge of its upper surface.

[0061] Specific embodiment 5 is a defoaming device according to specific embodiment 1, characterized in that the liquid reservoir is a soft plastic container or a rubber container.

[0062] Specific embodiment 6 is a defoaming device according to specific embodiment 1, characterized in that the liquid reservoir is a plastic bag or a rubber bag.

[0063] Specific embodiment 7 is a defoaming device according to specific embodiment 1, characterized in that the liquid reservoir is a soft vacuum bag.

[0064] Specific embodiment 8 is a defoaming device according to specific embodiment 1, characterized in that the distance between the lower end of the conduit and the lower surface of the interior of the liquid reservoir is in the range of 0.2-3 mm.

[0065] Specific embodiment 9 is a defoaming device according to specific embodiment 1, characterized in that the internal volume of the liquid reservoir is in the range of 0.1 liter to 1 liter.

[0066] Specific embodiment 10 is a debubbling device according to specific embodiment 1, characterized in that the bubble detector is an ultrasonic bubble detector or a charge coupled bubble detector.

[0067] Specific embodiment 11 is a debubbling device according to specific embodiment 1, characterized in that the bubble detector is an ultrasonic bubble detector, and the fluid channel is a transparent cylindrical channel.

[0068] Specific embodiment 12 is a defoaming device according to specific embodiment 11, characterized in that the inner diameter of the transparent cylindrical channel is in the range of 0.5 cm-2.5 cm.

[0069] Specific embodiment 13 is a debubbling device according to specific embodiment 1, characterized in that the bubble detector is a charge-coupled bubble detector, and two relatively parallel transparent windows are arranged on the fluid channel, and the distance between the two transparent windows is in the range of 0.3 mm to 4 mm.

[0070] Specific embodiment 14 is a defoaming device according to specific embodiment 13, characterized in that the two transparent windows are in the shape of a rounded rectangle or a rounded square.

[0071] Specific embodiment 15 is a defoaming device according to specific embodiment 13, characterized in that the side lengths of the two transparent windows are in the range of 3 mm to 50 mm.

[0072] Specific embodiment 16 is a defoaming device according to specific embodiment 1, characterized in that the third end of the three-way valve is connected to the inlet of the fluid channel; or, the third end of the three-way valve is connected to the waste liquid tank.

[0073] Specific embodiment 17 is a debubbling device according to specific embodiment 1, characterized in that the bubble detection unit is communicatively connected to the three-way valve in a wired or wireless manner.

[0074] Specific embodiment 18 is a debubbling device according to specific embodiment 1, characterized in that the debubbling device further includes a processor unit, and the processor unit sends a switching instruction to the three-way valve according to the detection result from the bubble detection part.

[0075] The embodiments described in the present invention are merely descriptions of the preferred implementation methods of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should fall within the scope of protection of the present invention. The technical contents for which protection is sought in the present invention have all been recorded in the claims.

Claims

1. A defoaming device for conveying adhesive fluid, characterized in that: The defoaming device comprises: a bubble detection portion having a bubble detector and a fluid channel having an inlet and an outlet; A three-way valve having a first end, a second end, and a third end; and a liquid reservoir having a liquid inlet, a liquid outlet, and a conduit, in: The first end of the three-way valve is connected to the outlet of the fluid channel, and the second end of the three-way valve is connected to the liquid inlet of the liquid reservoir; and The liquid inlet of the liquid reservoir is located on the upper surface of the liquid reservoir and is connected to the second end of the three-way valve, the liquid outlet of the liquid reservoir is located on the lower surface of the liquid reservoir, and the conduit of the liquid reservoir is air-tightly connected to the liquid inlet and extends from top to bottom to near the inner lower surface of the liquid reservoir.

2. The defoaming device according to claim 1, characterized in that: The liquid storage container is a cylindrical container, a cubic container or a rectangular parallelepiped container.

3. The defoaming device according to claim 1, characterized in that: The liquid storage container is a cylindrical container with rounded corners, a cubic container with rounded corners, or a rectangular parallelepiped container with rounded corners.

4. The defoaming device according to claim 1, characterized in that: The reservoir has one or more exhaust valves at the edge of its upper surface.

5. The defoaming device according to claim 1, characterized in that: The liquid storage container is a soft plastic container or a rubber container.

6. The defoaming device according to claim 1, characterized in that: The liquid storage container is a plastic bag or a rubber bag.

7. The defoaming device according to claim 1, characterized in that: The liquid storage container is a soft vacuum bag.

8. The defoaming device according to claim 1, characterized in that: The distance between the lower end of the conduit and the lower surface of the interior of the reservoir is in the range of 0.2-3 mm.

9. The defoaming device according to claim 1, characterized in that: The internal volume of the reservoir is in the range of 0.1 liter to 1 liter.

10. The defoaming device according to claim 1, characterized in that: The bubble detector is an ultrasonic bubble detector or a charge coupled bubble detector.

11. The defoaming device according to claim 1, characterized in that: The bubble detector is an ultrasonic bubble detector, and the fluid channel is a transparent cylindrical channel.

12. The defoaming device according to claim 11, characterized in that: The inner diameter of the transparent cylindrical channel is in the range of 0.5 cm to 2.5 cm.

13. The defoaming device according to claim 1, characterized in that: The bubble detector is a charge-coupled bubble detector, and two relatively parallel transparent windows are arranged on the fluid channel, with a distance between the two transparent windows ranging from 0.3 mm to 4 mm.

14. The defoaming device according to claim 13, characterized in that: The two transparent windows are in the shape of a rounded rectangle or a rounded square.

15. The defoaming device according to claim 13, characterized in that: The side lengths of the two transparent windows are in the range of 3 mm to 50 mm.

16. The defoaming device according to claim 1, characterized in that: The third end of the three-way valve is connected to the inlet of the fluid channel; or the third end of the three-way valve is connected to a waste liquid tank.

17. The defoaming device according to claim 1, characterized in that: The bubble detection unit is communicatively connected to the three-way valve in a wired or wireless manner.

18. The defoaming device according to claim 1, characterized in that: The debubbling device further includes a processor unit configured to send a switching instruction to the three-way valve according to a detection result from the bubble detection unit.

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