Water-based paint defoaming device

Abstract

The utility model relates to a water -based paint defoaming device, aims at solving the technical problem of the current inconvenience with the help of the agitation broken of the inclined blade, including cylinder, the top fixed mounting of cylinder has the transverse board, installs defoamer subassembly on the transverse board, defoamer subassembly includes servo motor, the transmission shaft of servo motor swing penetrates the transverse board and is fixedly connected with the pivot, the outer wall fixed mounting of pivot has a plurality of broken blade of uniform distribution and the inclined setting, the utility model discloses broken blade of broken assembly's inclined setting, thereby in the process of broken blade rotation can form cutting to bubble, and stir bubble moves up and down, can utilize the sawtooth slice of staggered setting to carry out secondary crushing, thereby be favorable to the significant promotion to bubble crushing effect, and then be favorable to the promotion defoaming effect.

Description

Technical Field

[0001] This utility model relates to the field of water-based coating production technology, specifically to a water-based coating defoaming device. Background Technology

[0002] Water-based coatings are environmentally friendly coatings that use water as the main diluent and do not rely on organic solvents (or contain only a very small amount of co-solvents). With their core advantages of low VOC (volatile organic compound) emissions and easy cleaning, their main film-forming substances are mostly water-based resins.

[0003] In the production and processing of existing water-based coatings, defoaming treatment is required, necessitating the use of corresponding defoaming devices. Existing defoaming devices, in practical use, fall into two categories: physical defoaming and chemical defoaming. To avoid affecting coating performance, material-based defoaming is often employed. Current defoaming devices break up air bubbles through agitation, but the breaking effect is generally limited, and it is not convenient to use inclined blades for agitation and breakup. Therefore, a new technical solution is needed to address this issue. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a defoaming device for water-based coatings to solve the current technical problem that it is not convenient to use inclined blades for stirring and crushing.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design a water-based coating defoaming device, including: a cylinder, a horizontal plate fixedly installed on the top of the cylinder, and a defoaming component installed on the horizontal plate; The defoaming component includes a servo motor, whose drive shaft movably passes through a horizontal plate and is fixedly connected to a rotating shaft. Multiple evenly distributed and inclined crushing blades are fixedly installed on the outer wall of the rotating shaft. The inner cavity of the cylinder also houses multiple negative pressure components evenly distributed from top to bottom. These negative pressure components are used to remove air bubbles. First, water-based paint is introduced into the inner cavity of the cylinder, allowing it to accumulate. Once a certain amount has accumulated, paint is released while simultaneously being added back into the cylinder. Then, the servo motor drives the rotating shaft to rotate, thereby rotating the inclined crushing blades and breaking up the air bubbles within the paint. The inclined crushing blades also agitate the paint, causing it to move up and down, further enhancing the air bubble breaking effect by creating vertical breakage with the crushing blades.

[0006] Preferably, multiple evenly distributed serrated blades are fixedly connected to both sides of the crushing blade, and adjacent serrated blades are staggered. During the process of crushing bubbles, the staggered serrated blades can be used for secondary crushing, which is beneficial to significantly improve the bubble crushing effect and thus improve the defoaming effect.

[0007] Preferably, the negative pressure assembly includes a ring tube, which is concentrically arranged with the rotating shaft and covers the outside of the crushing blade. Connecting rods are fixedly connected to all four sides of the outer wall of the ring tube, and the outer ends of the connecting rods are fixedly connected to the inner wall of the cylinder. Multiple evenly distributed negative pressure holes are opened on the inner wall of the ring tube, and a negative pressure pipe is fixedly connected to the upper side of the outer wall of the ring tube. The negative pressure pipe passes through the cylinder. During the process of the crushing blade stirring the coating, the coating can be moved outward under the action of centrifugal force. Due to the low density of the bubbles, they will stay at the end of the crushing blade. At this time, the negative pressure assembly is located at the point where the bubbles accumulate, so that the negative pressure pipe can generate negative pressure, thereby forming negative pressure in the inner cavity of the ring tube, and then forming negative pressure in the negative pressure holes to absorb the bubbles accumulated at the end of the crushing blade, thereby further improving the defoaming effect.

[0008] Preferably, a one-way valve is also fixedly installed on the outer wall of the negative pressure pipe. The one-way valve prevents gas from entering the cylinder and forming bubbles when there is no need for negative pressure to adsorb bubbles.

[0009] Preferably, a spiral groove is formed on the upper side of the inner wall of the cylinder. One end of the spiral groove is connected to the feed pipe. After the paint enters the cylinder through the feed pipe, it can flow along the spiral groove, which helps the paint entering the cylinder to form a certain spiral, thereby prolonging the residence time of the paint in the cylinder, which in turn helps to prolong the defoaming time and further prolong the defoaming effect.

[0010] Preferably, connecting plates are fixedly connected to both sides of the horizontal plate, and the outer end of the connecting plate is fixedly connected to the cylinder. By adding connecting plates, the strength of the connection between the horizontal plate and the cylinder can be improved, thereby ensuring the stability of the defoaming component.

[0011] Preferably, a feed pipe is fixedly connected to the upper side of the outer wall of the cylinder, and a discharge pipe is fixedly connected to the bottom side of the cylinder. A suitable control valve is also installed on the discharge pipe. It should be understood that the feed pipe can guide the coating into the inner cavity of the cylinder, and the discharge pipe can be used to discharge the material, thereby realizing the material flow through the cylinder and the defoaming treatment in the cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses the inclined arrangement of the crushing blades of the crushing component, so that the crushing blades can cut the bubbles during the rotation of the crushing blades and move the bubbles up and down. It can also use the staggered saw blades to perform secondary crushing, which can significantly improve the crushing effect of the bubbles and thus improve the defoaming effect. 2. In this invention, the crushing blades, during the process of agitating the coating, enable the coating to move outward under the action of centrifugal force. Due to the low density of the bubbles, they will remain at the tip of the crushing blades. At this time, the negative pressure component can be used to remove the bubbles that have accumulated at the tip of the crushing blades, thereby further improving the defoaming effect. After the paint enters the cylinder through the feed pipe, it can flow along the spiral channel, which helps to form a certain spiral in the paint entering the cylinder. This helps to prolong the residence time of the paint in the cylinder, thereby prolonging the defoaming time and further extending the defoaming effect. Attached Figure Description

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

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the defoaming component structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the crushing blade structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the negative pressure component structure of this utility model.

[0018] In the diagram: 1. Cylinder; 11. Horizontal plate; 12. Connecting plate; 13. Feed pipe; 14. Discharge pipe; 15. Spiral groove; 2. Servo motor; 21. Shaft; 22. Crushing blade; 23. Serrated slicer; 3. Ring pipe; 31. Connecting rod; 32. Negative pressure pipe; 33. Negative pressure hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A defoaming device for water-based coatings, see [link / reference] Figures 1 to 5 It includes: a cylinder 1, which serves as the core cavity for defoaming the coating and provides a closed space for bubble breaking and negative pressure suction. A horizontal plate 11 is fixedly installed on the top of the cylinder 1, and a defoaming component is installed on the horizontal plate 11 for defoaming the coating inside the cylinder 1. The defoaming component includes a servo motor 2. The drive shaft of the servo motor 2 passes through the horizontal plate 11 and is fixedly connected to a rotating shaft 21. Multiple evenly distributed and inclined crushing blades 22 are fixedly installed on the outer wall of the rotating shaft 21. Multiple negative pressure components are also installed in the inner cavity of the cylinder 1, which are evenly distributed from top to bottom. The negative pressure components are used to remove air bubbles.

[0020] It should be understood that in actual use, water-based paint is first introduced into the inner cavity of cylinder 1, and the paint is allowed to accumulate in cylinder 1. After accumulating to a certain amount, paint is released while paint is added to cylinder 1. Then, servo motor 2 drives rotating shaft 21 to rotate, thereby driving inclined crushing blade 22 to rotate, thereby breaking the air bubbles in the paint. The inclined crushing blade 22 can also move the paint, causing the paint to move up and down, so that the paint can be broken by the crushing blade 22 in the longitudinal direction, which helps to further improve the air bubble breaking effect. At the same time, the rotation can directly cut the air bubbles in the paint longitudinally, breaking the surface tension of the air bubbles.

[0021] Furthermore, a feed pipe 13 is fixedly connected to the upper side of the outer wall of the cylinder 1, and a discharge pipe 14 is fixedly connected to the bottom side of the cylinder 1. A suitable control valve is also installed on the discharge pipe 14. It should be understood that the coating can be guided to the inner cavity of the cylinder 1 through the feed pipe 13, and the material can be discharged through the discharge pipe 14, thereby realizing the flow of material through the cylinder 1 and the defoaming treatment inside the cylinder 1.

[0022] Furthermore, connecting plates 12 are fixedly connected to both sides of the horizontal plate 11. The outer end of the connecting plate 12 is fixedly connected to the cylinder 1. It should be understood that by adding the connecting plate 12, the strength of the connection between the horizontal plate 11 and the cylinder 1 can be improved, thereby ensuring the stability of the defoaming component.

[0023] It is worth mentioning that a spiral groove 15 is provided on the upper side of the inner wall of the cylinder 1. One end of the spiral groove 15 is connected to the feed pipe 13. It should be understood that when the coating enters the cylinder 1 through the feed pipe 13, it will flow downward in a spiral shape along the trajectory of the spiral groove 15. This design can break the limitations of the traditional direct-fall feeding, effectively extend the residence time of the coating in the cylinder 1, provide more sufficient reaction time for subsequent bubble breaking, and avoid incomplete defoaming due to excessive coating flow rate.

[0024] like Figure 2 and Figure 3 as well as Figure 4 As shown, multiple evenly distributed saw blades 23 are fixedly connected to both sides of the crushing blade 22, and adjacent saw blades 23 are staggered. It should be understood that when the crushing blade 22 cuts the bubbles, the staggered serrated blades 23 can finely divide the larger bubbles and break them into smaller microbubbles, avoiding the defect of traditional blades that "only break large bubbles and miss small bubbles", and further improving the thoroughness of defoaming.

[0025] like Figure 2 and Figure 5 As shown, the negative pressure assembly includes a ring tube 3, which is concentrically arranged with the rotating shaft 21. The ring tube 3 covers the outside of the crushing blade 22. Connecting rods 31 are fixedly connected to the four sides of the outer wall of the ring tube 3. The outer ends of the connecting rods 31 are fixedly connected to the inner wall of the cylinder 1. Multiple evenly distributed negative pressure holes 33 are opened on the inner wall of the ring tube 3. A negative pressure pipe 32 is fixedly connected to the upper side of the outer wall of the ring tube 3. The negative pressure pipe 32 passes through the cylinder 1. It should be understood that in actual use, when the crushing blade 22 agitates the coating, the coating will move to the outside of the cylinder 1 under the action of centrifugal force. Since the density of the air bubbles is much lower than that of the coating, they will concentrate at the end of the crushing blade 22. At this time, the ring pipe 3 is exactly in the air bubble accumulation area. By connecting to the external negative pressure equipment through the negative pressure pipe 32, a negative pressure can be formed in the inner cavity of the ring pipe 3. Then, the accumulated air bubbles can be accurately sucked out through the negative pressure hole 33, and the micro air bubbles remaining after physical crushing can be completely removed.

[0026] Furthermore, a one-way valve is fixedly installed on the outer wall of the negative pressure pipe 32. The one-way valve allows air bubbles inside the cylinder to be discharged through the negative pressure pipe 32, preventing external air from entering the cylinder 1 in the reverse direction through the negative pressure pipe 32.

[0027] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A defoaming device for water-based coatings, characterized in that, include: A cylindrical body (1) is provided with a horizontal plate (11) fixedly installed on the top of the cylindrical body (1), and a defoaming component is installed on the horizontal plate (11). The defoaming component includes a servo motor (2), the transmission shaft of the servo motor (2) passes through the horizontal plate (11) and is fixedly connected to a rotating shaft (21). Multiple evenly distributed and inclined crushing blades (22) are fixedly installed on the outer wall of the rotating shaft (21). Multiple negative pressure components are also installed in the inner cavity of the cylinder (1) and are evenly distributed from top to bottom. The negative pressure components are used to remove bubbles.

2. The defoaming device for water-based coatings as described in claim 1, characterized in that, The two sides of the crushing blade (22) are fixedly connected with multiple evenly distributed saw blades (23), and adjacent saw blades (23) are staggered.

3. The defoaming device for water-based coatings as described in claim 1, characterized in that, The negative pressure assembly includes a ring tube (3), which is concentrically arranged with the rotating shaft (21). The ring tube (3) covers the outside of the crushing blade (22). Connecting rods (31) are fixedly connected to the four sides of the outer wall of the ring tube (3). The outer end of the connecting rod (31) is fixedly connected to the inner wall of the cylinder (1). Multiple evenly distributed negative pressure holes (33) are opened on the inner wall of the ring tube (3). A negative pressure pipe (32) is fixedly connected to the upper side of the outer wall of the ring tube (3). The negative pressure pipe (32) passes through the cylinder (1).

4. The water-based coating defoaming device as described in claim 3, characterized in that, A one-way valve is also fixedly installed on the outer wall of the negative pressure pipe (32).

5. The defoaming device for water-based coatings as described in claim 1, characterized in that, The inner wall of the cylinder (1) is provided with a spiral groove (15), one end of which is connected to the feed pipe (13).

6. The defoaming device for water-based coatings as described in claim 1, characterized in that, Both sides of the horizontal plate (11) are fixedly connected to the connecting plate (12), and the outer end of the connecting plate (12) is fixedly connected to the cylinder (1).

7. The defoaming device for water-based coatings as described in claim 1, characterized in that, The upper side of the outer wall of the cylinder (1) is fixedly connected to the feed pipe (13), and the bottom side of the cylinder (1) is fixedly connected to the discharge pipe (14).

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