A two-component coating atomizing and spraying device and a spraying method

Abstract

The application discloses a kind of two-component coating atomization spraying device and spraying method, it is related to the field of spraying, including mixing chamber, at least one set of mixing nozzle is arranged in mixing chamber, the mixing nozzle includes first nozzle and second nozzle, first nozzle is used to spray first component into mixing chamber, and second nozzle is used to spray second component into mixing chamber;The jet direction of first nozzle and the jet direction of second nozzle have an angle.This device is directly impacted by the horizontal sweep of second component, and the mixing and stirring conditions are superior, and the stirring stability is better.Four first nozzles are pairwise on the four corners in mixing chamber, forming four-corner material jet, not only can strengthen the mixing of first component and second component, strengthen atomization stirring;Also make the material particles in mixing chamber impacted, accelerate the intraparticle decomposition, more easily atomized fusion.

Description

Technical Field

[0001] This invention relates to the field of spraying, and more specifically to a two-component coating atomization spraying device and spraying method. Background Technology

[0002] Two-component spraying equipment refers to the application of A and B components of coatings by mixing them during spraying, or by mixing the main component with a hardener in a specific ratio to achieve the best coating effect. Depending on the mixing ratio of the two-component coatings used by the customer and the curing time after mixing, two-component spraying equipment is categorized into air sprayers, high-pressure airless sprayers, air-assisted airless sprayers, low-flow medium-pressure sprayers, airless sprayers, and electrostatic sprayers.

[0003] The spraying machine uses a pneumatic-hydraulic booster pump. Compressed air enters through the reversing mechanism. When the piston moves to the upper or lower end of the cylinder, it activates the upper or lower pilot valve, controlling the airflow to instantly push the air distribution reversing device to change direction, thus enabling the piston of the pneumatic motor to perform stable and continuous reciprocating motion. Because the piston is rigidly connected to the plunger in the paint plunger pump, and the piston's area is larger than the plunger's area, the drawn-in paint is pressurized. The pressurized paint is delivered to the airless spray gun through a high-pressure hose, and finally, the hydraulic pressure is released at the airless nozzle, instantly atomizing and spraying onto the surface of the object to be coated, forming a coating layer.

[0004] Currently, in practical applications, two-component spraying devices suffer from a problem where the relationship between the mixing flow rate of the sprayed material and the mixing structure of the spray gun cannot be fully integrated. When the mixing chamber structure of the spray gun is complex, the flow resistance of the mixed material is high, and the material is mixed relatively evenly, but it is prone to adhesion, clumping, and blockage, resulting in a shorter service life. When the mixing chamber structure of the spray gun is simple, the flow resistance of the mixed material is low, and the flow rate is fast, solving the problems of adhesion, clumping, and blockage within the spray gun, resulting in a longer service life, but the material is not mixed evenly. Moreover, the mixing structure of various spray guns is welded to the gun body, making disassembly and cleaning inconvenient. Summary of the Invention

[0005] One object of the present invention is to provide a two-component coating atomization spraying device and spraying method, wherein when the first component is injected into the mixing chamber, it is subjected to the impact of the second component, thereby improving the uniformity of mixing.

[0006] This objective is achieved using the following technical solution:

[0007] A two-component coating atomization spraying device includes a mixing chamber with at least one set of mixing nozzles. The mixing nozzles include a first nozzle and a second nozzle. The first nozzle is used to spray a first component into the mixing chamber, and the second nozzle is used to spray a second component into the mixing chamber. The spraying direction of the first nozzle and the spraying direction of the second nozzle form an angle. When the first component is injected into the mixing chamber, it is impacted by the second component, which not only improves the mixing effect but also enhances the stirring stability.

[0008] Preferably, the first nozzle is connected to a first high-pressure pump, and the second nozzle is connected to a second high-pressure pump. The first and second high-pressure pumps pressurize the first component and the second component, respectively, forming an atomized airflow at the first and second nozzles.

[0009] Compared to existing air-based spraying, this device produces a uniform, particle-free paint finish. Because it is isolated from air, the paint dries and remains clean. When used for high-viscosity paints, this device not only produces sharp edges but can also be used for spraying projects with strict boundary requirements.

[0010] Preferably, the included angle is 90 degrees, and the second component impacts the first component perpendicularly, thereby increasing the contact area and mixing efficiency.

[0011] The impact on the material particles in the mixing chamber accelerates the internal decomposition of the material and makes it easier to blend.

[0012] Furthermore, the mixing chamber is equipped with two sets of mixing nozzles. The first nozzles in each set are positioned opposite each other, with their spray directions opposite, and the first components are ejected from the two first nozzles. Even further, the mixing chamber is equipped with four sets of mixing nozzles, with each set positioned in pairs opposite each other, forming a four-corner material jet relationship. During mixing, the two materials are stirred by opposing forces at different angles, achieving multi-stage atomization mixing and stirring of the materials, ensuring thorough mixing, improving the atomization mixing quality, and achieving the desired spraying effect. Simultaneously, the first and second components can form a tangential rotation within the mixing chamber. This tangential rotation creates a certain distance from the inner wall of the mixing chamber, forming a confined space jet, which better improves the uniformity of the materials within the mixing chamber. Moreover, the interaction of the four-corner material jets not only strengthens the mixing of the first and second components and enhances the atomization stirring process, but also causes the material particles in the mixing chamber to be impacted, accelerating the internal decomposition of the materials and making them easier to atomize and fuse.

[0013] Preferably, the spray angle of the first nozzle is smaller than that of the second nozzle. The first nozzle is a narrow-angle nozzle, which produces a narrow-angle fan-shaped spray with high impact. This spray produces a uniformly distributed, medium-sized spray, and the large, smooth channel minimizes clogging. The second nozzle is a wide-angle nozzle, which produces a wide-angle fan-shaped spray with medium impact. The sprayed liquid mist is uniformly distributed, medium-sized, and the large, smooth channel minimizes clogging.

[0014] Furthermore, a turbocharger is installed inside the mixing chamber, and an atomizing nozzle is installed on the mixing chamber. The atomizing nozzle is connected to the exhaust pipe of the turbocharger. The mixed first and second components are discharged through the exhaust pipe of the turbocharger and the atomizing nozzle. The injection direction of the first nozzle is tangential to the blade surface of the turbocharger, and the injection direction of the second nozzle is opposite to the blade surface of the turbocharger. The first and second nozzles cause the turbocharger blades to rotate.

[0015] The first and second components are atomized and sprayed onto the blades of the turbocharger, causing the blades to rotate. Simultaneously, the materials are mixed a second time, achieving thorough mixing of the different materials. The uniformly mixed material is then forced into the atomizing nozzle for high-pressure atomization spraying. The turbocharger ensures that the sprayed material is equal to the material added to the mixing chamber, effectively solving the problems of adhesion, clumping, and blockage within the mixing chamber. Furthermore, this device extends the material's usability. Existing spraying equipment requires all material to be sprayed out within a short time to avoid affecting material performance. Because this device sprays an equal amount of material to the mixing chamber, it can be used for a longer period and avoids the problem of material solidification in the mixing chamber.

[0016] Secondly, a first regulating valve is installed on the first nozzle, and a second regulating valve is installed on the second nozzle. These valves control the amount of the first component and the second component entering the mixing chamber, respectively, to achieve a thorough mixing of the different materials.

[0017] Based on this, another objective of the present invention is to provide a two-component coating atomization spraying method, comprising the following steps:

[0018] The first component is sprayed into the mixing chamber through the first nozzle, and the second component is sprayed into the mixing chamber through the second nozzle, with the spraying direction of the first nozzle and the spraying direction of the second nozzle forming an angle.

[0019] The rotating blades of the turbocharger perform secondary mixing and agitation of the material, and the uniformly mixed material is then expelled through the atomizing nozzle.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] This invention provides a two-component coating atomization spraying device and spraying method, in which the first component and the second component rotate tangentially in the mixing chamber and form a certain distance from the inner wall, creating a confined space jet, which makes it easier to achieve uniformity of materials in the mixing chamber; furthermore, the first component is injected into the mixing chamber and is directly impacted by the sweeping second component, resulting in superior mixing and stirring conditions and better stirring stability.

[0022] The four first nozzles of the present invention spray in pairs at the four corners of the mixing chamber to form a four-corner material jet, which not only enhances the mixing of the first and second components and strengthens atomization stirring, but also causes the material particles in the mixing chamber to be impacted, accelerating the internal decomposition of the material and making it easier to atomize and fuse.

[0023] Meanwhile, the present invention employs a turbocharger, and sets one or more stages of turbocharged stirring blades in the mixing chamber according to the atomization characteristics of the material. The blades use the atomization pressure to perform secondary mixing and stirring of the material, so as to achieve full mixing of different materials. At the same time, the uniformly mixed material is pressed into the atomizing nozzle to achieve high-pressure atomization spraying.

[0024] This invention employs counter-stirring at different angles, allowing the first and second components to be stirred by fan-shaped surfaces at different angles. This achieves complete counter-stirring of the atomized material, enabling multi-stage atomization mixing and stirring of the material. This ensures thorough mixing of the material, improves the atomization mixing quality, and achieves the desired spraying effect.

[0025] The high-pressure airless atomizing spraying of this invention can be applied to atomizing any type of coating, achieving a coating saving rate of up to 37% compared to traditional air spraying. Airless atomizing spraying produces a thicker film in a single pass, eliminating the need for repeated spraying during actual operation, thus reducing the possibility of overspraying and ensuring a smooth, uninterrupted spraying process, resulting in higher work efficiency.

[0026] This device has a simple structure and is easy to operate. It requires no heating during spraying, produces uniform coating, and is highly practical. Furthermore, the component ratios can be adjusted at any time during operation to achieve the appropriate paint consistency required by the worker. It is simple, convenient, and ensures quality. Its simple structure and ease of use facilitate widespread adoption.

[0027] Furthermore, the existing hybrid structures of various spray guns are all welded to the gun body, making disassembly and cleaning inconvenient. This device, however, allows for quick and easy disassembly, facilitating cleaning. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0029] Figure 1This is a schematic diagram of the structure in Example 1, where four sets of mixing nozzles are provided inside the mixing chamber;

[0030] Figure 2 This is a schematic diagram of the structure in Example 1 where the spray angle of the first nozzle is smaller than that of the second nozzle;

[0031] Figure 3 This is a schematic diagram showing the positions of the first nozzle and the second nozzle acting on the turbine blades in Example 2.

[0032] Figure 4 This is a schematic diagram of the device structure in Example 3;

[0033] The attached diagram shows the markings and corresponding component names:

[0034] 1-Mixing chamber, 2-First nozzle, 3-Second nozzle, 4-First high-pressure pump, 5-Second high-pressure pump, 6-Turbocharger, 7-Atomizing nozzle, 8-First regulating valve, 9-Second regulating valve, 10-Flow indicator, 11-First flow controller, 12-Second flow controller, 13-First paint tank, 14-Second paint tank, 15-First conveying pipe, 16-Second conveying pipe. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0036] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0037] Example 1

[0038] This device includes a mixing chamber 1, and a set of mixing nozzles is provided in the mixing chamber 1. The mixing nozzles include a first nozzle 2 and a second nozzle 3. The first nozzle 2 is used to spray a first component into the mixing chamber 1, and the second nozzle 3 is used to spray a second component into the mixing chamber 1. The spraying direction of the first nozzle 2 and the spraying direction of the second nozzle 3 form an angle. In this embodiment, the angle is 90 degrees. When the first nozzle sprays out the first component, the second nozzle 3 sprays the second component onto the first component, which can improve the uniformity of mixing.

[0039] Meanwhile, this mixing method allows the first and second components to rotate tangentially within the mixing chamber. This tangential rotation creates a certain distance between the material and the inner wall of the mixing chamber, thus enabling a confined space jet. This makes it easier to improve the uniformity of the material within the mixing chamber, and eliminates the need for complex mixing structures. Under the condition of uniform mixing, it can simultaneously prevent the material from solidifying and causing blockages within the mixing chamber.

[0040] In some embodiments, the mixing chamber 1 is provided with two sets of mixing nozzles, the first nozzles 2 of the two sets of mixing nozzles are arranged opposite each other, and the spraying directions of the two first nozzles 2 are opposite.

[0041] In some embodiments, such as Figure 1 As shown, four sets of mixing nozzles are provided in the mixing chamber 1. The first nozzles of the four sets of mixing nozzles are located at the four corners of the rectangle, and the four first nozzles are arranged in pairs facing each other and spraying out the first component. This not only strengthens the mixing of the first component and the second component and enhances the stirring process, but also causes the material particles in the mixing chamber 1 to be impacted, which accelerates the internal decomposition of the material and makes it easier to fuse.

[0042] In some embodiments, the first nozzle 2 is connected to the first high-pressure pump 4, and the second nozzle 3 is connected to the second high-pressure pump 5. The first component and the second component form atomized airflows at the first nozzle 2 and the second nozzle 3, respectively. The atomized airflow of the second component acts against the atomized airflow of the first component, improving mixing efficiency. Furthermore, high-pressure airless atomization for mixing and spraying is not only convenient to operate, but also eliminates the need for heating during spraying, resulting in uniform spraying and strong practicality.

[0043] In some embodiments, such as Figure 2 As shown, the spray angle of the first nozzle 2 is smaller than that of the second nozzle 3. Specifically, the first nozzle 2 has a narrow-angle nozzle structure, which can produce a narrow-angle fan-shaped spray with high impact. This spray produces a uniformly distributed, medium-sized mist, and the large, smooth channel minimizes clogging. The nozzle angle of the first nozzle 2 can be 25 degrees. The second component nozzle has a wide-angle nozzle structure, which can produce a wide-angle fan-shaped spray with medium impact. The sprayed liquid mist is uniformly distributed, medium-sized, and the large, smooth channel minimizes clogging. The nozzle angle of the second nozzle 2 can be 35 degrees.

[0044] Example 2

[0045] Based on the above embodiment, a turbocharger 6 is installed in the mixing chamber 1, and an atomizing nozzle 7 is installed on the mixing chamber 1. The atomizing nozzle 7 is connected to the exhaust pipe of the turbocharger 6. The mixed first component and second component are discharged through the exhaust pipe of the turbocharger 6 and the atomizing nozzle 7. The spray direction of the first nozzle 2 is tangential to the blade surface of the turbocharger 6, and the spray direction of the second nozzle 3 is opposite to the blade surface of the turbocharger 6. The first nozzle 2 and the second nozzle 3 cause the blades of the turbocharger 6 to rotate. Here, "tangential to the blade surface of the turbocharger 6" means that the sprayed material is in contact with the entire surface of the blade, and "opposite to the blade surface of the turbocharger 6" means that the sprayed material is sprayed perpendicularly onto the blade. The tangential spray direction and the opposite spray direction are perpendicular to each other. Through such a spray angle, the blades are driven to rotate.

[0046] The turbocharger 6 consists of two parts: a turbine and a compressor. The turbine and compressor are coaxially connected, and the compressor is connected to the exhaust pipe. The exhaust pipe is connected to the atomizing nozzle 7, and the compressor's intake pipe is connected to the inside of the mixing chamber.

[0047] like Figure 3 As shown, the first nozzle, under the action of the first high-pressure pump 4, sprays the first component onto the cross-section of the turbine blades. The second nozzle, under the action of the second high-pressure pump 5, impacts the first component onto the second component, and the second component is sprayed directly onto the turbine blade surface. The sprayed first and second components drive the turbine blades to rotate. The rotation of the turbine blades can further improve the mixing uniformity of the first and second components. At the same time, the turbine drives the compressor to rotate. As the compressor rotates, the mixed first and second components inside the mixing chamber are drawn into the intake pipe and compressed to form high pressure. They are then discharged through the exhaust pipe and atomizing nozzle 7. During this process, the amount of material entering the mixing chamber is the same as the amount of material discharged through the atomizing nozzle 7. Therefore, it can effectively prevent the material from solidifying in the mixing chamber and affecting the coating performance.

[0048] In some embodiments, the turbine is located inside the mixing chamber 1, and the compressor is located outside the mixing chamber. The turbine blades rotate under the action of the material, and at the same time drive the compressor to rotate through the shaft. The air inlet pipe of the compressor is connected to the inside of the mixing chamber, thereby forcing the material in the mixing chamber into the exhaust pipe of the compressor and spraying it out through the atomizing nozzle 7.

[0049] Example 3

[0050] like Figure 4 As shown, this device includes a first paint tank 13, a second paint tank 14, a first high-pressure pump 4, a second high-pressure pump 5, a first conveying pipe 15, a second conveying pipe 16, a first flow controller 11, a second flow controller 12, a flow display 10, a first regulating valve 8, a second regulating valve 9, and a main output switch.

[0051] The first paint tank 13 is connected to the mixing chamber through the first conveying pipe 15. The first high-pressure pump 4 is installed on the first conveying pipe 15. The first conveying pipe 15 is equipped with a first regulating valve 8, a first flow controller 11 and a first nozzle.

[0052] The second paint tank 14 is connected to the mixing chamber through the second conveying pipe 16. The second high-pressure pump 5 is installed on the second conveying pipe 16. The second conveying pipe 16 is equipped with a second regulating valve 9, a second flow controller 12 and a second nozzle.

[0053] In use, the present invention first pressurizes the paint in the first paint tank 13 by the first high-pressure pump 4, so that the paint is sprayed out evenly under high pressure. The first flow controller 11 adjusts the first regulating valve 8 to control the quantity and proportion of paint in the first paint tank 13 entering the mixing chamber. The flow display 10 can be used to display the amount of material introduced. The second high-pressure pump 5 pressurizes the paint in the second paint tank 14. The second flow controller 12 controls the quantity and proportion of paint in the second paint tank 14 entering the mixing chamber, so that the paint in the first paint tank 13 and the paint tank 14 are mixed in a tangential atomization within the mixing chamber.

[0054] Secondly, the material is further mixed and stirred by the blades of the turbocharger 6 through the atomization pressure, so as to achieve the purpose of fully mixing different materials. At the same time, the uniformly mixed material is pressed into the atomizing nozzle 7 to achieve high-pressure atomization spraying.

[0055] The terms "first," "second," and "third" used in this document are merely for clarity of description and are not intended to restrict any order or emphasize importance. Furthermore, the term "connection" used in this document, unless otherwise specified, can refer to a direct connection or an indirect connection via other components.

[0056] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A two-component paint atomizing spraying device, characterized in that, The system includes a mixing chamber (1), which is provided with at least one set of mixing nozzles. The mixing nozzles include a first nozzle (2) and a second nozzle (3). The first nozzle (2) is used to spray a first component into the mixing chamber (1), and the second nozzle (3) is used to spray a second component into the mixing chamber (1). The spraying direction of the first nozzle (2) and the spraying direction of the second nozzle (3) form an angle of 90 degrees. The spraying angle of the first nozzle (2) is smaller than the spraying angle of the second nozzle (3). The first nozzle (2) is connected to the first high-pressure pump (4), and the second nozzle (3) is connected to the second high-pressure pump (5). The injection direction of the first nozzle (2) is tangent to the blade surface of the turbocharger (6), and the injection direction of the second nozzle (3) is opposite to the blade surface of the turbocharger (6). The first nozzle (2) and the second nozzle (3) make the blade of the turbocharger (6) rotate. Two sets of mixing nozzles are provided in the mixing chamber (1). The first nozzle (2) in the two sets of mixing nozzles is set opposite to each other, and the injection directions of the two first nozzles (2) are opposite to each other.

2. The two-component coating atomizing spraying device according to claim 1, characterized in that, Four sets of mixing nozzles are provided in the mixing chamber (1).

3. The two-component coating atomizing spraying device according to claim 1, characterized in that, A turbocharger (6) is installed in the mixing chamber (1), and an atomizing nozzle (7) is installed on the mixing chamber (1). The atomizing nozzle (7) is connected to the exhaust pipe of the turbocharger (6). The first component and the second component after mixing are discharged through the exhaust pipe of the turbocharger (6) and the atomizing nozzle (7).

4. The two-component coating atomizing spraying device according to claim 1, characterized in that, The first nozzle (2) is provided with a first regulating valve (8), and the second nozzle (3) is provided with a second regulating valve (9).

5. A method for atomizing and spraying a two-component coating, characterized in that, The spraying apparatus according to any one of claims 1-4 is characterized by comprising the following steps: (1) The first component is sprayed into the mixing chamber (1) through the first nozzle (2), and the second component is sprayed into the mixing chamber (1) through the second nozzle (3), and the spraying direction of the first nozzle (2) and the spraying direction of the second nozzle (3) are at an angle; (2) The blades of the turbocharger (6) rotate to mix and stir the material a second time. The material after being mixed evenly is pressed into the atomizing nozzle (7) and discharged.

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