Coating vacuum degassing apparatus

Abstract

The utility model discloses a coating vacuum defoaming equipment belongs to coating defoaming technical field. Coating vacuum defoaming equipment, include: defoaming jar and vacuum pump, the drive end of vacuum pump is fixedly connected with the air extraction pipe, and the one end of air extraction pipe is apart from vacuum pump and is linked together with defoaming jar, the defoaming jar bottom is equipped with the material guide inclined plane, and the material guide inclined plane is fixedly connected with the vibration part, the discharge pipe is fixedly connected on the defoaming jar side wall, and the discharge pipe is linked together with defoaming jar, the utility model discloses through setting 30-45's material guide inclined plane of defoaming jar bottom, cooperate the low -frequency vibration part of fixed on the inclined plane, make the directional flow trend of coating when vibrating along the inclined plane upwards. Bubble is under the action of vacuum expansion, and with coating directional movement to liquid level, has shortened the bubble movement path, has reduced the dead angle of jar bottom, avoids the problem that local defoaming is not sufficient.

Description

Technical Field

[0001] This utility model relates to the field of coating degassing technology, and in particular to coating vacuum degassing equipment. Background Technology

[0002] During the production, processing, and application of coatings, air can easily be incorporated into the coating during stirring, grinding, and conveying, or gases can be generated due to chemical reactions, forming a large number of tiny bubbles. If these bubbles are not removed in time, they can lead to defects in the applied coating, such as pinholes, craters, orange peel texture, and decreased gloss, severely affecting the appearance quality and physical properties (such as corrosion resistance and adhesion). Therefore, degassing is an indispensable key step in the refined production of coatings. Existing coating degassing equipment mostly adopts the principle of vacuum degassing, using a vacuum pump to reduce the pressure inside the container, causing the bubbles to expand and escape. However, traditional equipment has certain shortcomings in practical applications: Low degassing efficiency and poor uniformity: Traditional degassing tanks are mostly horizontal at the bottom, and the flow direction of the coating is chaotic during vibration degassing. The bubble movement path is long, which easily forms dead corners at the bottom of the tank, resulting in insufficient degassing of local coatings. Especially for high-viscosity coatings, the resistance to bubble floating is large, and the degassing cycle is long.

[0003] Risks of paint splashing and secondary bubbles: When degassing with vibration in a vacuum environment, the paint is prone to splashing due to vibration. When the splashed paint falls back to the liquid surface, it is easy to re-enter the air and form secondary bubbles, which affects the degassing effect.

[0004] Material residue and operational inconvenience: The horizontal tank bottom results in a large amount of paint residue during discharge, requiring manual cleaning and increasing operating costs; in addition, if the tank lid seal is not reliable enough, vacuum leakage is likely to occur, reducing defoaming efficiency. Utility Model Content

[0005] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a vacuum degassing device for coatings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Vacuum degassing equipment for coatings includes: Degassing tank and vacuum pump; A suction pipe is fixedly connected to the drive end of the vacuum pump, and the end of the suction pipe away from the vacuum pump is connected to the degassing tank. The bottom of the degassing tank is provided with a guide slope, and a vibrating part is fixedly connected to the guide slope. The discharge pipe is fixedly connected to the side wall of the degassing tank, and the discharge pipe is connected to the degassing tank.

[0007] Preferably, the degassing tank has a detachable lid on top, the suction pipe is fixedly connected to the lid, a connecting seat is fixedly connected to the side wall of the degassing tank, a screw is rotatably connected to the connecting seat, a tightening handle is threaded onto the screw, and the tightening handle abuts against the top of the lid.

[0008] Preferably, a baffle is fixedly connected to the degassing tank, and the baffle has an air extraction hole.

[0009] Furthermore, the bottom of the baffle is provided with an arc-shaped material guiding surface.

[0010] Preferably, a solenoid valve is fixedly connected to the discharge pipe.

[0011] Preferably, the inclination angle of the guide slope is 30-45°.

[0012] Compared with the prior art, the present invention provides a vacuum degassing device for coatings, which has the following beneficial effects: 1. This utility model utilizes a 30-45° inclined guide surface at the bottom of the degassing tank, along with a low-frequency vibrating element fixed to the inclined surface, to induce a directional upward flow of the coating material during vibration. Under vacuum expansion, the bubbles move directionally to the liquid surface with the coating material, shortening their movement path, reducing dead zones at the bottom of the tank, and avoiding incomplete degassing in certain areas.

[0013] 2. The baffle fixed inside the degassing tank of this utility model can effectively block the paint splashed during vibration, preventing it from being entrained by air when it falls back due to high splashing; the arc-shaped guide surface at the bottom of the baffle allows the blocked paint to slide back to the liquid surface quickly, reducing paint retention and further reducing the risk of secondary bubbles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the coating vacuum degassing equipment proposed in this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the coating vacuum degassing equipment proposed in this utility model. Figure 2 ; Figure 3 This is a cross-sectional view of the coating vacuum degassing equipment proposed in this utility model.

[0015] In the diagram: 1. Degassing tank; 101. Connecting seat; 1011. Tightening handle; 1012. Screw; 2. Support rod; 201. Connecting ring; 3. Vacuum pump; 301. Evacuation pipe; 4. Vibrating part; 5. Solenoid valve; 501. Discharge pipe; 6. Baffle; 601. Arc-shaped guide surface; 602. Evacuation port; 7. Tank lid. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example 1: Reference Figures 1-3 Vacuum degassing equipment for coatings, including: Degassing tank 1 and vacuum pump 3; A suction pipe 301 is fixedly connected to the drive end of the vacuum pump 3, and the end of the suction pipe 301 away from the vacuum pump 3 is connected to the degassing tank 1. The bottom of the degassing tank 1 is provided with a guide slope 102, and a vibrating part 4 is fixedly connected to the guide slope 102. The discharge pipe 501 is fixedly connected to the side wall of the degassing tank 1, and the discharge pipe 501 is connected to the degassing tank 1.

[0018] Reference Figure 1 , Figure 2 In specific implementation, it also includes multiple sets of support rods 2, and a connecting ring 201 is fixedly connected to the side wall of the degassing tank 1. The connecting ring 201 is detachably connected to the support rod 2.

[0019] It should be noted that, in order to ensure the stability of the connection between the support rod 2 and the connecting ring 201, the support rod 2 can be bolted to the connecting ring 201 during installation, thereby providing stable support for the degassing tank 1.

[0020] It should also be noted that the vibration unit 4 is a commercially available low-frequency vibrator, specifically model BRECON-18164101.

[0021] In practice, a feed pipe is fixedly connected to the side wall of the degassing tank 1, and the feed pipe is located below the baffle 6.

[0022] Before use, add the coating to be defoamed into the defoaming tank 1 through the feed pipe and close the tank lid 7.

[0023] During degassing, vacuum pump 3 is started to evacuate degassing tank 1 through vacuum pipe 301; and vibration unit 4 is turned on at the same time to generate low-frequency vibration on the guide slope 102 at the bottom of degassing tank 1; during the vibration process, the bubbles in the coating expand, merge and move upward under the vacuum environment and vibration.

[0024] After degassing is completed, first turn off the vibrating part 4 and the vacuum pump 3, and slowly restore the pressure in the degassing tank 1 to normal pressure; open the solenoid valve 5 on the discharge pipe 501, and the degassed coating is discharged through the discharge pipe 501 along the guide slope 102 under the action of gravity.

[0025] The inclination angle of the guide slope 102 is 30-45°.

[0026] The inclination angle of the guide slope 102 is set to 30-45°. During discharge, the paint can flow smoothly along the slope with the help of gravity and be discharged through the discharge pipe 501, reducing paint residue in the tank. Compared with a horizontal bottom, it can discharge the paint more quickly and thoroughly, improving production efficiency.

[0027] When the vibrating section 4 is working, the inclined guide surface causes the coating to flow directionally upward along the inclined surface. Combined with the vibration, it can more effectively drive the bubbles to move towards the liquid surface and shorten the bubble movement path. The inclined surface makes the vibration of the coating more directional, avoiding the problem of insufficient vibration of local coatings that may occur on the horizontal bottom surface, and improving the uniformity of defoaming.

[0028] The top of the degassing tank 1 is detachably connected to the tank cover 7. The suction pipe 301 is fixedly connected to the tank cover 7. The side wall of the degassing tank 1 is fixedly connected to the connecting seat 101. The connecting seat 101 is rotatably connected to the screw 1012. The screw 1012 is threadedly connected to the tightening handle 1011. The tightening handle 1011 abuts against the top of the tank cover 7.

[0029] By tightening the can lid 7 with the tightening handle 1011, the connection between the can lid 7 and the degassing tank 1 can be sealed, thus ensuring the overall vacuuming effect.

[0030] A baffle 6 is fixedly connected to the degassing tank 1, and an air extraction hole 602 is provided on the baffle 6.

[0031] Reference Figure 3 In practice, the baffle 6 fixedly connected in the degassing tank 1 can effectively prevent the paint from splashing too high during vibration. When it falls back into the liquid surface, it will generate bubbles again. The baffle 6 can effectively limit and block the splashed material.

[0032] The bottom of the baffle 6 has an arc-shaped guide surface 601.

[0033] Reference Figure 3 In practice, the arc-shaped guide surface 601 at the bottom of the baffle 6 allows the splashed paint to slide back into the liquid surface quickly through the arc-shaped guide surface 601 when it is blocked by the baffle 6.

[0034] A solenoid valve 5 is fixedly connected to the discharge pipe 501.

[0035] It should be noted that solenoid valve 5 is an industrial electric valve that can be purchased on the market, and the specific model can be MVH-3.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A vacuum degassing equipment for coatings, characterized in that, include: Degassing tank (1) and vacuum pump (3); A suction pipe (301) is fixedly connected to the drive end of the vacuum pump (3), and the end of the suction pipe (301) away from the vacuum pump (3) is connected to the degassing tank (1). The bottom of the degassing tank (1) is provided with a guide slope (102), and a vibrating part (4) is fixedly connected to the guide slope (102). The discharge pipe (501) is fixedly connected to the side wall of the degassing tank (1), and the discharge pipe (501) is connected to the degassing tank (1).

2. The coating vacuum degassing equipment according to claim 1, characterized in that, The degassing tank (1) is detachably connected to a lid (7) on the top. The suction pipe (301) is fixedly connected to the lid (7). A connecting seat (101) is fixedly connected to the side wall of the degassing tank (1). A screw (1012) is rotatably connected to the connecting seat (101). A tightening handle (1011) is threaded onto the screw (1012). The tightening handle (1011) abuts against the top of the lid (7).

3. The coating vacuum degassing equipment according to claim 1, characterized in that, A baffle (6) is fixedly connected in the degassing tank (1), and an air extraction hole (602) is provided on the baffle (6).

4. The coating vacuum degassing equipment according to claim 3, characterized in that, The bottom of the baffle (6) is provided with an arc-shaped material guiding surface (601).

5. The coating vacuum degassing equipment according to claim 1, characterized in that, A solenoid valve (5) is fixedly connected to the discharge pipe (501).

6. The coating vacuum degassing equipment according to claim 1, characterized in that, The inclination angle of the guide slope (102) is 30-45°.

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