A defoaming stirring device for water-based paint processing

Abstract

This utility model relates to the field of water-based paint processing technology, and in particular to a defoaming and stirring device for water-based paint processing. It includes a processing table, a stirring tank fixedly connected to the processing table, a support base fixedly connected to the top of the stirring tank, and a dual-axis counter-rotating stirring structure at the center of the support base. The dual-axis counter-rotating stirring structure includes a first drive motor located on the support base, the output end of which extends into the interior of the stirring tank and is connected to a central shaft. During the stirring and processing of water-based paint, the dual-axis counter-rotating stirring structure drives the central shaft and eccentric shaft to rotate counter-rotatingly, forming complex shear forces and convection fields within the water-based paint. Compared to traditional single-axis stirring, this device can more quickly and evenly disperse various components in the water-based paint, greatly improving mixing efficiency and uniformity. Simultaneously, the staggered angles of the stirring blades can accommodate bubbles of different positions and characteristics, and the synergistic effect of both achieves comprehensive and efficient defoaming.

Description

Technical Field

[0001] This utility model relates to the field of water-based paint processing technology, and in particular to a defoaming and stirring device for water-based paint processing. Background Technology

[0002] Water-based paints, including water-based anti-rust paints, water-based steel structure paints, water-based floor paints, water-based wood paints, and wood wax oils, are harmless to the human body and do not pollute the environment. They produce a full, crystal-clear, and flexible paint film with characteristics such as water resistance, wear resistance, aging resistance, yellowing resistance, fast drying, and ease of use. However, water-based paints generate a large number of bubbles during the production and processing process, which usually requires defoaming and stirring during the processing of water-based paints.

[0003] In existing defoaming and stirring devices for water-based paints, most use a single shaft for stirring. This method creates a relatively simple flow field, making it difficult to fully mix the various components of the water-based paint. It is also not efficient enough at eliminating bubbles. Due to the complex distribution of bubbles in water-based paints, single-shaft stirring cannot take into account bubbles in different locations and with different characteristics, resulting in poor defoaming effects and failing to meet the production requirements of water-based paints with high mixing uniformity. Furthermore, for water-based paints with high viscosity and strong bubble stability, simple mechanical stirring or the installation of a few defoaming components on the stirring shaft is often insufficient to completely break up bubbles. There is a lack of effective methods for handling tiny bubbles, which may leave many bubbles and impurities in the product, affecting the appearance quality and performance of the water-based paint. This can lead to problems such as poor leveling and surface porosity during subsequent application. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a defoaming and stirring device for water-based paint processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A defoaming and stirring device for water-based paint processing includes a processing table, a stirring tank fixedly connected to the processing table, a support base fixedly connected to the top of the stirring tank, and a biaxial counter-directional stirring structure provided at the center of the support base.

[0007] The dual-axis counter-directional stirring structure includes a first drive motor located on a support base. The output end of the first drive motor extends into the interior of the stirring tank and is connected to a central shaft. A propeller blade is provided on the central shaft.

[0008] A mounting plate is fixedly connected to the middle of the processing table. A second drive motor is provided on the mounting plate. The output end of the second drive motor extends into the interior of the mixing tank and is connected to an eccentric shaft. A stirring blade is provided on the eccentric shaft. The stirring blades are arranged on the eccentric shaft in an alternating manner with an inclined angle.

[0009] Preferably, the bottom of the mixing tank is provided with a mounting base, a coarse filter screen is snapped into the mounting base, a fine filter screen is provided below the coarse filter screen, and a defoaming fiber layer filter screen is provided below the fine filter screen. The defoaming fiber layer filter screen is made of hydrophobic fibers woven into a felt-like structure.

[0010] Preferably, the inner wall of the mounting base is provided with an arc-shaped groove, and the outer walls of the coarse filter screen, fine filter screen and defoaming fiber layer filter screen are all fixedly connected with arc-shaped locking blocks that cooperate with the arc-shaped groove. Positioning holes are provided on both sides of the outer wall of the mounting base, and telescopic positioning rods are provided in the positioning holes. A connector is fixedly connected between the processing table and the mixing tank. The end of the telescopic positioning rod passes through the mixing tank and extends into the connector, and the end is threaded with a fastener.

[0011] Preferably, a connecting end is fixedly connected between the output end of the first drive motor and the central shaft, and a U-shaped connecting rod is fixedly connected to the end of the connecting end, and a flexible scraper is fixedly connected to the outer wall of the U-shaped connecting rod.

[0012] Preferably, the outer wall of the mixing tank is provided with a feed inlet, and an L-shaped support rod is fixedly connected to one side of the feed inlet. A sealing baffle is connected to the side of the L-shaped support rod near the feed inlet through a connecting ring, and the sealing baffle abuts against the port of the feed inlet.

[0013] Preferably, a discharge pipe is provided at the center of the bottom of the mixing tank, the end of the discharge pipe is connected to the inside of the mixing tank, and a discharge valve is provided at the end of the discharge pipe near the mixing tank.

[0014] Preferably, the propeller blades are helical blades, the stirring blades are slender blades, and the stirring blades include an upwardly inclined blade group and a downwardly inclined blade group, which are distributed at intervals along the axial direction of the eccentric shaft.

[0015] The beneficial effects of this utility model are:

[0016] When mixing water-based paint, the dual-axis counter-rotating mixing structure drives the central and eccentric shafts to rotate in opposite directions, creating complex shear forces and convection fields within the paint. Compared to traditional single-axis mixing, this method can disperse various components in the paint more quickly and evenly, greatly improving mixing efficiency and uniformity. Simultaneously, the staggered angles of the mixing blades allow for the removal of bubbles at different locations and with varying characteristics. Upward-tilting blades guide bubbles to the liquid surface for elimination, while downward-tilting blades powerfully break up small bubbles that are difficult to break at the bottom and center. This synergistic effect provides comprehensive and efficient defoaming, avoiding incomplete defoaming in certain areas and significantly improving the defoaming effect, thus solving the problem of defoaming in high-viscosity, stable-bubble water-based paints.

[0017] By using coarse, fine, and defoaming fiber layer filters, the system can intercept and filter particles mixed in water-based paint. It also utilizes surface tension differences to break up tiny bubbles, achieving secondary defoaming and fine filtration. This significantly reduces the content of bubbles and impurities in the water-based paint, improving appearance quality and performance. The first drive motor rotates the connecting end and the U-shaped connecting rod, causing the flexible scraper to rotate along the inner wall of the mixing tank, continuously scraping away the attached paint and impurities, keeping the inside of the mixing tank clean, and reducing the frequency and difficulty of manual cleaning.

[0018] The coarse filter, fine filter, and defoaming fiber layer filter are connected by arc-shaped snap-fit ​​blocks and arc-shaped slots on the mounting base, which facilitates disassembly, cleaning of surface impurities, and ensures long-term stable operation of the device, extending its service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a defoaming and stirring device for water-based paint processing proposed in this utility model;

[0020] Figure 2 This is a top view of the mixing tank of a defoaming mixing device for water-based paint processing proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the biaxial counter-directional stirring structure of an antifoaming stirring device for water-based paint processing proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the mounting base structure of a defoaming stirring device for water-based paint processing proposed in this utility model;

[0023] Figure 5 This is an exploded view of the connection structure between the coarse filter, fine filter, and defoaming fiber layer filter of a defoaming stirring device for water-based paint processing proposed in this utility model.

[0024] In the picture:

[0025] 1. Processing table; 2. Mixing tank; 3. Support base; 301. First drive motor; 302. Central shaft; 303. Propeller blade; 4. Mounting plate; 401. Second drive motor; 402. Eccentric shaft; 403. Mixing blade; 5. Mounting base; 501. Coarse filter screen; 502. Fine filter screen; 503. Defoaming fiber layer filter screen; 6. Arc-shaped groove; 601. Arc-shaped locking block; 602. Telescopic positioning rod; 603. Connecting piece; 604. Fastener; 7. Connecting end; 701. U-shaped connecting rod; 702. Flexible scraper; 8. Feed inlet; 801. L-shaped support rod; 802. Connecting ring; 803. Sealing baffle; 9. Discharge pipe; 901. Discharge valve. Detailed Implementation

[0026] 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.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0029] Example 1:

[0030] Reference Figures 1-5 A defoaming and stirring device for water-based paint processing includes a processing table 1, a stirring tank 2 fixedly connected to the processing table 1, a support base 3 fixedly connected to the top of the stirring tank 2, and a biaxial counter-directional stirring structure provided at the center of the support base 3.

[0031] The dual-axis counter-directional stirring structure includes a first drive motor 301 located on the support base 3. The output end of the first drive motor 301 extends into the interior of the stirring tank 2 and is connected to a central shaft 302. A propeller blade 303 is provided on the central shaft 302.

[0032] A mounting plate 4 is fixedly connected to the middle of the processing table 1. A second drive motor 401 is installed on the mounting plate 4. The output end of the second drive motor 401 extends into the interior of the mixing tank 2 and is connected to an eccentric shaft 402. A stirring blade 403 is installed on the eccentric shaft 402. The stirring blades 403 are arranged on the eccentric shaft 402 in an alternating manner with an inclined angle.

[0033] A connecting end 7 is fixedly connected between the output end of the first drive motor 301 and the central shaft 302. A U-shaped connecting rod 701 is fixedly connected to the end of the connecting end 7, and a flexible scraper 702 is fixedly connected to the outer wall of the U-shaped connecting rod 701.

[0034] The outer wall of the mixing tank 2 is provided with a feed inlet 8. An L-shaped support rod 801 is fixedly connected to one side of the feed inlet 8. A sealing baffle 803 is connected to the side of the L-shaped support rod 801 near the feed inlet 8 through a connecting ring 802. The sealing baffle 803 abuts against the port of the feed inlet 8.

[0035] The propeller blade 303 uses spiral blades, and the agitator blade 403 uses slender blades. The agitator blade 403 includes an upwardly inclined blade group and a downwardly inclined blade group, which are distributed at intervals along the axial direction of the eccentric shaft 402.

[0036] In this embodiment, when water-based paint needs to be processed and stirred, the water-based paint is first fed into the mixing tank 2 through the feed inlet 8. Then, a sealing baffle 803 is placed against one side of the feed inlet 8 to prevent splashing of the water-based paint during the stirring process. After the water-based paint enters the mixing tank 2, the first drive motor 301 and the second drive motor 401 are simultaneously started. Subsequently, the central shaft 302, propeller blades 303, eccentric shaft 402, and stirring blades 403 begin to rotate under the drive of the first drive motor 301 and the second drive motor 401, and the rotation directions are opposite. When the central shaft 302 drives the propeller... When the impeller 303 rotates, it pushes the water-based paint inside the mixing tank 2 to circulate up and down along the axial direction, thereby forming axial convection. At the same time, when the impeller 403 on the eccentric shaft 402 rotates, it drives the water-based paint to perform circumferential rotation and radial diffusion. When the central shaft 302 and the eccentric shaft 402 rotate in opposite directions, a complex shear force and convection field can be formed inside the water-based paint, which allows the various components in the water-based paint to mix quickly and evenly. In addition, because the surface tension of the bubbles is destroyed by the force in different directions, they are more likely to break, thereby defoaming the bubbles in the water-based paint.

[0037] Furthermore, when the stirring blades 403 are arranged on the eccentric shaft 402 at alternating angles, the upward-sloping blades guide the air bubbles inside the water-based paint towards the liquid surface. For easily broken bubbles, centrifugal force and gravity are used to make the bubbles gather on the surface and eliminate them. The downward-sloping blades can quickly act on the bubbles at the bottom and in the middle, and provide greater shear force to break small bubbles that are highly stable and difficult to break. The alternating arrangement of the two blades can deal with various bubble conditions, so that the bubbles in the water-based paint from top to bottom are treated in a targeted manner, avoiding incomplete defoaming in some areas and improving the overall defoaming effect. At the same time, the upward-sloping blades drive the water-based paint liquid to move upward and towards the center, while the downward-sloping blades promote the paint liquid to spread downward and towards the edge. The interaction, collision and fusion of fluids in different directions form a highly turbulent flow field. The alternating action of the two blades continuously changes the pressure, speed and direction of the fluid in the water-based paint, interfering with the formation and stable existence of bubbles, thereby increasing the mixing and contact between the components of the water-based paint. This not only helps with defoaming, but also makes the water-based paint mix more evenly and improves product quality.

[0038] Furthermore, when the first drive motor 301 is running, it synchronously drives the connecting end 7 to rotate. When the connecting end 7 rotates, it drives the U-shaped connecting rod 701 to rotate. When the U-shaped connecting rod 701 rotates, it drives the flexible scrapers 702 on both sides to rotate along the inner wall of the mixing tank 2. Thus, when the flexible scrapers 702 rotate, they continuously scrape the inner wall of the mixing tank 2, which can scrape off the paint and impurities adhering to the inner wall of the mixing tank 2, keeping the inside of the mixing tank 2 clean.

[0039] Example 2:

[0040] Reference Figures 4-5 Based on Embodiment 1, a technical solution for a defoaming stirring device for water-based paint processing is provided. The bottom of the stirring tank 2 is provided with a mounting base 5. A coarse filter 501 is snapped into the mounting base 5. A fine filter 502 is provided below the coarse filter 501. A defoaming fiber layer filter 503 is provided below the fine filter 502. The defoaming fiber layer filter 503 is made of hydrophobic fibers woven into a felt-like structure.

[0041] The inner wall of the mounting base 5 is provided with an arc-shaped groove 6. The outer walls of the coarse filter screen 501, fine filter screen 502 and defoaming fiber layer filter screen 503 are all fixedly connected with arc-shaped locking blocks 601 that cooperate with the arc-shaped groove 6. The outer walls of the mounting base 5 are provided with positioning holes on both sides. Telescopic positioning rods 602 are provided in the positioning holes. A connector 603 is fixedly connected between the processing table 1 and the mixing tank 2. The end of the telescopic positioning rod 602 passes through the mixing tank 2 and extends into the connector 603, and the end is threadedly connected with a fastener 604.

[0042] A discharge pipe 9 is provided at the center of the bottom of the mixing tank 2. The end of the discharge pipe 9 is connected to the inside of the mixing tank 2. A discharge valve 901 is provided at the end of the discharge pipe 9 near the mixing tank 2.

[0043] In this embodiment, after the water-based paint is defoamed and stirred, it flows through the coarse filter 501 at the bottom. The coarse filter 501 intercepts and filters larger particles mixed in the water-based paint. Then, it passes through the fine filter 502 to further remove small particles. Subsequently, when the water-based paint passes through the defoaming fiber layer filter 503, the residual microbubbles in the water-based paint come into contact with the hydrophobic fiber surface of the defoaming fiber layer filter 503. Due to the difference in surface tension between the bubbles and the hydrophobic fiber surface, the microbubbles break, achieving secondary defoaming and fine filtration, resulting in extremely low bubble content in the discharged water-based paint. After the water-based paint is defoamed and filtered, the discharge valve 901 is opened, allowing the water-based paint to flow out from the discharge pipe 9, facilitating further subsequent processing of the water-based paint.

[0044] After the water-based paint is applied, tighten the fastener 604 to loosen the mounting base 5 from the mixing tank 2. Then, pull out the telescopic positioning rod 602 from the positioning hole on the side of the mounting base 5, so that the mounting base 5 can be removed separately. Then, sequentially disengage the arc-shaped locking block 601 on the side of the coarse filter screen 501, fine filter screen 502 and defoaming fiber layer filter screen 503 from the arc-shaped locking groove 6, so that the coarse filter screen 501, fine filter screen 502 and defoaming fiber layer filter screen 503 can be removed in sequence, achieving the purpose of cleaning the impurities and particles remaining on their surfaces after filtration.

[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A defoaming and stirring device for water-based paint processing, comprising a processing table (1), characterized in that, A mixing tank (2) is fixedly connected to the processing table (1), and a support base (3) is fixedly connected to the top of the mixing tank (2). A dual-axis eccentric mixing structure is provided at the center of the support base (3). The dual-axis counter-rotating stirring structure includes a first drive motor (301) located on a support base (3). The output end of the first drive motor (301) extends into the interior of the stirring tank (2) and is connected to a central shaft (302). A propeller blade (303) is provided on the central shaft (302). A mounting plate (4) is fixedly connected to the middle of the processing table (1). A second drive motor (401) is provided on the mounting plate (4). The output end of the second drive motor (401) extends into the interior of the mixing tank (2) and is connected to an eccentric shaft (402). A stirring blade (403) is provided on the eccentric shaft (402). The stirring blades (403) are arranged on the eccentric shaft (402) in an alternating manner with an inclined angle.

2. The defoaming and stirring device for water-based paint processing according to claim 1, characterized in that, The mixing tank (2) has an installation base (5) at its inner bottom. A coarse filter screen (501) is snapped into the installation base (5). A fine filter screen (502) is installed below the coarse filter screen (501). A defoaming fiber layer filter screen (503) is installed below the fine filter screen (502). The defoaming fiber layer filter screen (503) is made of hydrophobic fibers woven into a felt-like structure.

3. The defoaming and stirring device for water-based paint processing according to claim 2, characterized in that, The inner wall of the mounting base (5) is provided with an arc-shaped groove (6). The outer walls of the coarse filter screen (501), fine filter screen (502) and defoaming fiber layer filter screen (503) are all fixedly connected with arc-shaped locking blocks (601) that cooperate with the arc-shaped groove (6). The outer walls of the mounting base (5) are provided with positioning holes on both sides. A telescopic positioning rod (602) is provided in the positioning hole. A connector (603) is fixedly connected between the processing table (1) and the mixing tank (2). The end of the telescopic positioning rod (602) passes through the mixing tank (2) and extends into the connector (603), and the end is threaded with a fastener (604).

4. The defoaming and stirring device for water-based paint processing according to claim 1, characterized in that, A connecting end (7) is fixedly connected between the output end of the first drive motor (301) and the central shaft (302). A U-shaped connecting rod (701) is fixedly connected to the end of the connecting end (7). A flexible scraper (702) is fixedly connected to the outer wall of the U-shaped connecting rod (701).

5. The defoaming and stirring device for water-based paint processing according to claim 1, characterized in that, The outer wall of the mixing tank (2) is provided with a feed inlet (8). An L-shaped support rod (801) is fixedly connected to one side of the feed inlet (8). A sealing baffle (803) is connected to the side of the L-shaped support rod (801) near the feed inlet (8) through a connecting ring (802). The sealing baffle (803) abuts against the port of the feed inlet (8).

6. The defoaming and stirring device for water-based paint processing according to claim 1, characterized in that, A discharge pipe (9) is provided at the bottom center of the mixing tank (2). The end of the discharge pipe (9) is connected to the inside of the mixing tank (2). A discharge valve (901) is provided at the end of the discharge pipe (9) near the mixing tank (2).

7. The defoaming and stirring device for water-based paint processing according to claim 1, characterized in that, The propeller blade (303) is a spiral blade, and the stirring blade (403) is a slender blade. The stirring blade (403) includes an upwardly inclined blade group and a downwardly inclined blade group, which are distributed at intervals along the axial direction of the eccentric shaft (402).

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