A device for producing water-based paint defoaming

Abstract

The utility model relates to the technical field of water -based paint production, in particular to a production water -based paint defoaming device, it can avoid the separated foam to return to water -based paint, make foam elimination more sufficient, and high defoaming efficiency, including defoaming box, liquid inlet pipe and liquid outlet pipe, the inside of defoaming box is provided with chamber, liquid inlet pipe is installed on defoaming box, and the lower extreme of liquid inlet pipe is communicated with the upper portion of the chamber of defoaming box, and liquid outlet pipe is installed at the bottom of defoaming box, and the upper extreme of liquid outlet pipe is communicated with the bottom of the chamber of defoaming box, still including collecting chamber, filter plate and drive assembly, and the lateral portion of the chamber of defoaming box is provided with the outward bulging collecting chamber, and the collecting chamber is located at the upper portion of defoaming box, and the filter plate moves left and right and is installed the upper portion of the chamber of defoaming box, and drive assembly is installed in the chamber of defoaming box, and drive assembly drives filter plate to move, and filter plate is aligned with collecting chamber.

Description

Technical Field

[0001] This utility model relates to the technical field of water-based coating production, and in particular to a defoaming and defoaming device for producing water-based coatings. Background Technology

[0002] Water-based coatings require the thorough mixing of various raw materials during production, which generates a large amount of foam. This foam needs to be removed promptly to ensure the quality of the water-based coatings. Chinese utility model patent CN219879161U discloses a water-based paint defoamer. This defoamer includes a defoamer body, with a defoaming component installed in its inner cavity. A fixed cover is installed on the top wall of the defoamer body via a limiting component. A feed pipe is connected to the rear wall of the defoamer body, and a controller is installed on the front wall. This utility model relates to the field of defoaming technology. The water-based paint defoamer uses a controller to control an electric push rod, which pushes a filter frame, support column, and bubble-cutting net upwards. As the filter frame moves upwards, it causes a limiting block to slide within a limiting groove, cutting off air bubbles in the paint within the defoamer body. The filter frame filters and separates the fine air bubbles, leaving them on the filter frame. Opening the valve allows the paint to be discharged from the discharge pipe, enabling direct breaking and filtering of air bubbles within the paint. This avoids insufficient viscosity caused by directly using defoamers, and simultaneously filters the fine paint particles, improving the quality of the paint.

[0003] However, after the defoaming machine uses a filter frame to lift the foam out of the water-based paint, the foam will fall back into the water-based paint through the filter holes of the filter frame, resulting in insufficient foam elimination. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a defoaming device for producing water-based coatings that can prevent separated foam from falling back into the water-based coating, thereby making foam elimination more thorough and achieving high defoaming efficiency.

[0005] This utility model discloses a defoaming device for producing water-based coatings, comprising a defoaming chamber, an inlet pipe, and an outlet pipe. The defoaming chamber has an internal chamber. The inlet pipe is installed on the defoaming chamber, with its lower end connected to the upper part of the chamber. The outlet pipe is installed at the bottom of the defoaming chamber, with its upper end connected to the bottom of the chamber. It also includes a collection chamber, a filter plate, and a drive assembly. A protruding collection chamber is located on the side of the chamber, at the top of the defoaming chamber. The filter plate is mounted on the upper part of the chamber, moving left and right. The drive assembly is installed in the chamber of the defoaming chamber and drives the filter plate to move, aligning the filter plate with the collection chamber. During operation, the water-based coating solution is input into the chamber of the defoaming chamber through the inlet pipe, causing the coating to flow horizontally. The liquid level is slightly higher than the lower surface of the collection chamber. After standing for a period of time, the microbubbles in the water-based coating float to the surface of the liquid and form a foam layer. The drive component drives the filter plate to move from the end away from the collection chamber towards the collection chamber, so that the filter plate pushes the foam layer on the liquid surface into the collection chamber for collection. In order to improve the foam collection effect of the collection chamber, a groove for collecting foam is set on the side of the collection chamber away from the defoaming box to achieve defoaming of the water-based coating. The foam is allowed to stand in the collection chamber until it is completely broken and returns to the solution of the water-based coating. When the foam is eliminated, the valve of the outlet pipe is opened, and the water-based coating is discharged from the defoaming box. Compared with the existing technology, this method can avoid the separated foam from falling back into the water-based coating, making the foam elimination more complete and the defoaming efficiency higher.

[0006] Preferably, it also includes two scrapers, with scrapers installed at both the upper and lower ends of the filter plate. The lower scraper scrapes the inner surface of the bottom wall of the collection chamber. By setting two scrapers, the filter plate can scoop up the foam layer during its movement, and the scraping of the inner surface of the bottom wall of the collection chamber by the scrapers improves the pushing effect on the foam layer.

[0007] Preferably, the drive assembly includes a slide rail, a lead screw, and a motor. The slide rail is horizontally installed in the chamber and collection chamber of the defoaming box. The filter plate is slidably connected to the slide rail via a sliding sleeve. The lead screw is rotatably installed in the chamber and collection chamber of the defoaming box and is driven to the filter plate via a lead screw nut. The motor is installed on the defoaming box, and the output shaft of the motor is driven to the lead screw. The motor drives the lead screw to rotate, and the lead screw drives the filter plate to move along the slide rail via the lead screw nut, thereby realizing the left and right drive of the filter plate.

[0008] Preferably, it also includes an air extractor and an air extraction pipe. The air extractor is installed on the defoaming box, and the air extraction end of the air extractor is connected to one end of the air extraction pipe, while the other end of the air extraction pipe extends into the collection chamber. When the water-based coating is input into the chamber of the defoaming box, the valve of the liquid inlet pipe is closed, and the air extractor operates to extract the air from the chamber of the defoaming box and the collection chamber through the air extraction pipe, so that a certain negative pressure is formed in the chamber of the defoaming box, causing the microbubbles in the water-based coating to quickly rise to the liquid surface and form a foam layer, thereby improving the efficiency of bubble removal in the water-based coating.

[0009] Preferably, the system also includes a three-way valve, an exhaust pipe, and a return pipe. The three-way valve is installed on the defoaming chamber. The first channel of the three-way valve is connected to the exhaust end of the vacuum pump. The exhaust pipe is installed on the second channel of the three-way valve. One end of the return pipe is connected to the third channel of the three-way valve, and the other end of the return pipe extends into the liquid inlet pipe. When it is necessary to remove microbubbles from the water-based coating, the three-way valve switches, connecting the exhaust end of the vacuum pump to the exhaust pipe through the three-way valve. This allows air to be expelled from the chamber of the defoaming chamber, creating negative pressure and accelerating the removal of bubbles from the water-based coating. After the water-based coating is discharged through the liquid outlet pipe, the three-way valve switches again, connecting the exhaust end of the vacuum pump to the return pipe through the three-way valve. This allows the foam collected in the collection chamber to be extracted and discharged through the three-way valve and the return pipe back into the liquid inlet pipe, then returned to the chamber of the defoaming chamber for reuse.

[0010] Preferably, it also includes a float and a sound sensor. The float is slidably mounted on the inner wall of the defoaming tank and the sound sensor is installed on the float. The float rises and falls with the liquid level of the water-based paint to detect the liquid level of the water-based paint. The sound sensor on the float is used to detect the sound of foam bursting. When the detected foam bursting sound decreases to a set value, it is determined that the foam on the liquid surface of the water-based paint has been completely removed, which is practical.

[0011] Preferably, it also includes a frame, multiple elastic sheets, and an ultrasonic ring energyr. The frame is installed at the bottom of the chamber of the defoaming box, and multiple elastic sheets are installed on the frame. The ultrasonic ring energyr is installed on the frame. When water-based paint is introduced into the chamber of the defoaming box, the ultrasonic ring energyr operates to vibrate the frame and multiple elastic sheets at high frequency, so that the multiple elastic sheets perform ultrasonic vibration to defoam the water-based paint, thereby improving the defoaming efficiency.

[0012] Compared with the prior art, the beneficial effects of this utility model are: it can prevent the separated foam from falling back into the water-based coating, making the foam elimination more complete and the defoaming efficiency high. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the isometric structure of this utility model; Figure 4 This is a structural diagram of the filter plate, drive assembly, scraper, and other components. Figure 5 It is a structural diagram of the air extractor, air extraction pipe, three-way valve, exhaust pipe and return pipe, etc. Figure 6 It is a structural diagram of the frame, elastic sheet and ultrasonic ring energy generator, etc.

[0014] The following components are labeled in the attached diagram: 1. Defoaming box; 2. Inlet pipe; 3. Outlet pipe; 4. Collection chamber; 5. Filter plate; 6. Drive assembly; 7. Scraper; 8. Slide rail; 9. Lead screw; 10. Motor; 11. Vacuum pump; 12. Vacuum pipe; 13. Three-way valve; 14. Exhaust pipe; 15. Return pipe; 16. Float; 17. Sound sensor; 18. Frame; 19. Elastic sheet; 20. Ultrasonic oscillator. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0016] like Figures 1 to 4 As shown, a defoaming device for producing water-based coatings includes a defoaming chamber 1, an inlet pipe 2, and an outlet pipe 3. The defoaming chamber 1 has an internal chamber. The inlet pipe 2 is installed on the defoaming chamber 1, with its lower end connected to the upper part of the chamber. The outlet pipe 3 is installed at the bottom of the defoaming chamber 1, with its upper end connected to the bottom of the chamber. The device also includes a collection chamber 4, a filter plate 5, and a drive assembly 6. The collection chamber 4 protrudes outwards from the side of the chamber of the defoaming chamber 1 and is located at the top of the chamber. The filter plate 5 is installed at the top of the chamber of the defoaming chamber 1, moving left and right. The drive assembly 6 is installed in the chamber of the defoaming chamber 1 and drives the filter plate 5 to move, aligning the filter plate 5 with the collection chamber 4. It also includes two scrapers 7, with scrapers 7 installed at both the upper and lower ends of the filter plate 5. The lower scraper 7 scrapes the inner surface of the bottom wall of the collection chamber 4. The drive assembly 6 includes a slide rail 8, a lead screw 9, and a motor 10. The slide rail 8 is horizontally installed in the chamber of the defoaming box 1 and the collection chamber 4. The filter plate 5 is slidably connected to the slide rail 8 through a sliding sleeve. The lead screw 9 is rotatably installed in the chamber of the defoaming box 1 and the collection chamber 4. The lead screw 9 is drively connected to the filter plate 5 through a lead screw nut. The motor 10 is installed on the defoaming box 1, and the output shaft of the motor 10 is drively connected to the lead screw 9. It also includes a float 16 and a sound sensor 17. The float 16 is slidably installed on the inner wall of the defoaming box 1, and the sound sensor 17 is installed on the float 16.

[0017] During operation, the water-based paint solution is introduced into the chamber of the defoaming box 1 through the inlet pipe 2, ensuring that the liquid level of the water-based paint is slightly higher than the lower surface of the collection chamber 4. The float 16 rises and falls with the liquid level of the water-based paint, thereby detecting the liquid level. After standing for a period of time, the microbubbles in the water-based paint float to the surface and form a foam layer. The motor 10 drives the lead screw 9 to rotate, and the lead screw 9 drives the filter plate 5 to move along the slide rail 8 from the end away from the collection chamber 4 towards the collection chamber 4, so that the filter plate 5 pushes the foam layer on the liquid surface into the collection chamber 4 for collection. By setting two scrapers 7, the movement of the filter plate 5 can scrape up the foam layer. The scrapers 7 scrape the inner surface of the bottom wall of the collection chamber 4 to improve the cleaning effect. To improve the foam collection effect of the collection chamber 4, a groove for collecting foam is provided on the side of the collection chamber 4 away from the defoaming box 1 (not shown in the diagram). This achieves defoaming of the water-based paint and allows the foam to stand in the collection chamber 4 until it completely breaks down and returns to the solution of the water-based paint. The sound sensor 17 on the float 16 is used to detect the sound of foam breaking. When the detected foam breaking sound decreases to a set value, it is determined that the foam on the surface of the water-based paint has been completely removed. After the foam is eliminated, the valve of the outlet pipe 3 is opened, and the water-based paint is discharged from the defoaming box 1. Compared with the existing technology, this method can prevent the separated foam from falling back into the water-based paint, making the foam elimination more complete and the defoaming efficiency higher. Example 2

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, based on Embodiment 1, it also includes a vacuum pump 11 and a vacuum pipe 12. The vacuum pump 11 is installed on the defoaming box 1, and the vacuuming end of the vacuum pump 11 is connected to one end of the vacuum pipe 12. The other end of the vacuum pipe 12 extends into the collection chamber 4. It also includes a three-way valve 13, an exhaust pipe 14, and a return pipe 15. The three-way valve 13 is installed on the defoaming box 1. The first channel of the three-way valve 13 is connected to the exhaust end of the vacuum pump 11. The exhaust pipe 14 is installed on the second channel of the three-way valve 13. One end of the return pipe 15 is connected to the third channel of the three-way valve 13. The other end of the return pipe 15 extends into the liquid inlet pipe 2.

[0019] After the water-based paint is fed into the chamber of the defoaming box 1, the valve of the inlet pipe 2 is closed, and the three-way valve 13 is switched so that the outlet of the vacuum pump 11 is connected to the exhaust pipe 14 through the three-way valve 13. The vacuum pump 11 operates to extract the air from the chamber of the defoaming box 1 and the collection chamber 4 through the vacuum pipe 12, so that a certain negative pressure is formed in the chamber of the defoaming box 1, causing the microbubbles in the water-based paint to rise quickly to the liquid surface and form a foam layer, thereby improving the efficiency of bubble removal in the water-based paint. After the water-based paint is discharged through the outlet pipe 3, the three-way valve 13 is switched so that the outlet of the vacuum pump 11 is connected to the return pipe 15 through the three-way valve 13, so that the foam collected in the collection chamber 4 is extracted and discharged back into the inlet pipe 2 through the three-way valve 13 and the return pipe 15, and then flows back into the chamber of the defoaming box 1 for reuse. Example 3

[0020] like Figure 1 , Figure 2 and Figure 6 As shown, based on Embodiment 1, it also includes a frame 18, multiple elastic sheets 19, and an ultrasonic ring energyr 20. The frame 18 is installed at the bottom of the chamber of the defoaming box 1, and multiple elastic sheets 19 are installed on the frame 18. The ultrasonic ring energyr 20 is installed on the frame 18. When water-based paint is introduced into the chamber of the defoaming box 1, the ultrasonic ring energyr 20 operates to vibrate the frame 18 and multiple elastic sheets 19 at high frequency, so that the multiple elastic sheets 19 perform ultrasonic vibration to defoam the water-based paint, thereby improving the defoaming efficiency.

[0021] like Figures 1 to 6 As shown, this utility model discloses a defoaming and defoaming device for producing water-based coatings. During operation, the water-based coating solution is first introduced into the chamber of the defoaming tank 1 through the inlet pipe 2, ensuring the coating level is slightly higher than the lower surface of the collection chamber 4. Then, the ultrasonic ring generator 20 operates, vibrating the frame 18 and multiple elastic plates 19 at high frequency. This causes the elastic plates 19 to perform ultrasonic vibration defoaming and defoaming on the water-based coating. The three-way valve 13 switches, connecting the exhaust end of the air extractor 11 to the exhaust pipe 14 through the three-way valve 13, thereby expelling air from the chamber of the defoaming tank 1 and creating a negative pressure within the chamber. The removal of air bubbles in the water-based paint causes microbubbles in the paint to float to the surface of the liquid, forming a foam layer. Then, the drive assembly 6 drives the filter plate 5 to move from the end away from the collection chamber 4 towards the collection chamber 4, so that the filter plate 5 pushes the foam layer on the liquid surface into the collection chamber 4 for collection. The valve of the outlet pipe 3 opens, and the water-based paint is discharged from the defoaming box 1. Finally, the three-way valve 13 switches, so that the outlet of the vacuum pump 11 is connected to the return pipe 15 through the three-way valve 13, so that the foam collected in the collection chamber 4 is extracted and discharged into the inlet pipe 2 through the three-way valve 13 and the return pipe 15, and then flows back to the chamber of the defoaming box 1 for reuse.

[0022] The main functions achieved by this utility model are: 1. It can prevent the separated foam from falling back into the water-based coating, making the foam elimination more complete and the defoaming efficiency high; 2. Negative pressure is used to make the microbubbles in the water-based coating rise quickly to the liquid surface and form a foam layer, thereby improving the efficiency of bubble removal in the water-based coating. 3. After the water-based paint is discharged through the liquid outlet pipe 3, the air outlet of the vacuum pump 11 is connected to the return pipe 15 through the three-way valve 13, so that the foam collected in the collection chamber 4 is extracted and discharged into the liquid inlet pipe 2 through the three-way valve 13 and the return pipe 15, and then flows back to the chamber of the defoaming box 1 for reuse. 4. It can perform ultrasonic vibration to defoam and eliminate foam from water-based coatings, thereby improving the efficiency of defoaming and eliminating foam.

[0023] This utility model discloses a defoaming and defoaming device for producing water-based coatings. Its installation, connection, and setting methods are all common mechanical methods, and any method that achieves the desired beneficial effect can be implemented. The components of this defoaming and defoaming device—defoaming box 1, inlet pipe 2, outlet pipe 3, filter plate 5, drive assembly 6, scraper 7, slide rail 8, lead screw 9, motor 10, air extractor 11, air extraction pipe 12, three-way valve 13, exhaust pipe 14, return pipe 15, float 16, sound sensor 17, elastic sheet 19, and ultrasonic transducer 20—are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative effort from those skilled in the art.

[0024] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A defoaming device for producing water-based coatings, comprising a defoaming chamber (1), an inlet pipe (2), and an outlet pipe (3), wherein the defoaming chamber (1) has an internal chamber, the inlet pipe (2) is installed on the defoaming chamber (1), the lower end of the inlet pipe (2) is connected to the upper part of the chamber of the defoaming chamber (1), and the outlet pipe (3) is installed at the bottom of the defoaming chamber (1), the upper end of the outlet pipe (3) is connected to the bottom of the chamber of the defoaming chamber (1); characterized in that, It also includes a collection chamber (4), a filter plate (5) and a drive assembly (6). The chamber side of the defoaming box (1) is provided with an outwardly protruding collection chamber (4). The collection chamber (4) is located at the upper part of the defoaming box (1). The filter plate (5) is installed at the upper part of the chamber of the defoaming box (1) and moves left and right. The drive assembly (6) is installed in the chamber of the defoaming box (1). The drive assembly (6) drives the filter plate (5) to move and aligns the filter plate (5) with the collection chamber (4).

2. The defoaming and anti-foaming device for producing water-based coatings as described in claim 1, characterized in that, It also includes two scrapers (7), with scrapers (7) installed at both the upper and lower ends of the filter plate (5), and the scraper (7) located below scrapes the inner surface of the bottom wall of the collection chamber (4).

3. The defoaming and anti-foaming device for producing water-based coatings as described in claim 1, characterized in that, The drive assembly (6) includes a slide rail (8), a lead screw (9) and a motor (10). The slide rail (8) is horizontally installed in the chamber and collection chamber (4) of the defoaming box (1). The filter plate (5) is slidably connected to the slide rail (8) through a sliding sleeve. The lead screw (9) is rotatably installed in the chamber and collection chamber (4) of the defoaming box (1). The lead screw (9) is connected to the filter plate (5) through a lead screw nut. The motor (10) is installed on the defoaming box (1). The output shaft of the motor (10) is connected to the lead screw (9) through a drive.

4. The defoaming and anti-foaming device for producing water-based coatings as described in claim 1, characterized in that, It also includes a vacuum pump (11) and a vacuum pipe (12). The vacuum pump (11) is installed on the defoaming box (1). The vacuum pump (11) is connected to one end of the vacuum pipe (12), and the other end of the vacuum pipe (12) extends into the collection chamber (4).

5. The defoaming and anti-foaming device for producing water-based coatings as described in claim 4, characterized in that, It also includes a three-way valve (13), an exhaust pipe (14) and a return pipe (15). The three-way valve (13) is installed on the defoaming box (1). The first channel of the three-way valve (13) is connected to the exhaust end of the vacuum pump (11). The exhaust pipe (14) is installed on the second channel of the three-way valve (13). One end of the return pipe (15) is connected to the third channel of the three-way valve (13). The other end of the return pipe (15) extends into the liquid inlet pipe (2).

6. The defoaming and anti-foaming device for producing water-based coatings as described in claim 1, characterized in that, It also includes a float (16) and a sound sensor (17). The float (16) is slidably mounted on the inner wall of the defoaming box (1), and the sound sensor (17) is mounted on the float (16).

7. The defoaming and anti-foaming device for producing water-based coatings as described in claim 1, characterized in that, It also includes a frame (18), multiple elastic sheets (19) and an ultrasonic amplifier (20). The frame (18) is installed at the bottom of the chamber of the defoaming box (1), and multiple elastic sheets (19) are installed on the frame (18). The ultrasonic amplifier (20) is installed on the frame (18).

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