A nanoscale photocatalyst coating and a spraying device thereof

Abstract

The application discloses a kind of nanometer photocatalyst coating and its spraying device, including main body, the front of the main body is fixedly connected with first protective chamber, the rear of the main body is fixedly connected with second protective chamber, the inside upper side of the first protective chamber and second protective chamber is connected with annular conveying line by bolt, the lower part of the annular conveying line is drivingly connected with hanger, the lower part of the hanger is connected with the electric heating tube to be sprayed, and the front side and rear side of the main body are respectively embedded with spray head.The application has the advantages that the workpiece to be sprayed is continuously sent into the spraying area through the annular conveying line, ensuring the continuity and efficiency of the spraying operation.The elastic roof can automatically adjust the position according to the size of the workpiece, so that the workpiece is stably hung on the hanger, avoiding uneven coating caused by workpiece shaking.The coating and air can be fully mixed by pressurized mixing, improving the uniformity and efficiency of spraying, and ensuring the quality of coating.

Description

Technical Field

[0001] This invention belongs to the field of photocatalytic coating technology, and particularly relates to a nanoscale photocatalytic coating and its spraying device. Background Technology

[0002] Photocatalysts are nanoscale metal oxide materials (titanium dioxide is commonly used). Coated onto a substrate surface, they exhibit strong catalytic degradation capabilities under light: effectively degrading toxic and harmful gases in the air; effectively killing various bacteria and decomposing and neutralizing toxins released by bacteria or fungi; and also possessing deodorizing and anti-fouling functions. Under light irradiation, photocatalysts produce a photocatalytic reaction similar to photosynthesis, generating highly oxidizing free hydroxyl radicals and reactive oxygen species. These have strong photo-oxidation and reduction capabilities, capable of oxidizing and decomposing various organic compounds and some inorganic substances. They can destroy bacterial cell membranes and solidify viral proteins, killing bacteria and decomposing organic pollutants into harmless water (H2O), carbon dioxide (CO2), and other harmless substances. Therefore, they possess extremely strong bactericidal, deodorizing, mildew-proof, anti-fouling, self-cleaning, and air-purifying functions.

[0003] However, existing photocatalytic coatings cannot effectively remove scale during heating when sprayed onto the surface of heating tubes. Therefore, we propose a nanoscale photocatalytic coating and its spraying device. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this invention is to provide a nano-scale photocatalytic coating and its spraying device. By incorporating nano-titanium dioxide and a styrene-acrylic emulsion component with strong penetration and good water resistance, it achieves automatic descaling by adhering to the heating tube. Furthermore, the spraying device can achieve uniform spraying, high spraying efficiency, and good adhesion.

[0005] This invention is achieved as follows: a nano-scale photocatalytic coating, the coating being composed of the following materials in weight percentages: 10-25% nano-titanium dioxide, 0.5-1.0% nitrate, 0.6-1.0% dispersant, 10-15% aluminum oxide solution, 0.1-0.2% surfactant, 0.1-0.2% pH adjuster, 3.5-5.5% propylene glycol, 5.0-6.5% zinc oxide solution, 8-12% calcined limestone, 3-5% aluminum sulfate, 35-45% styrene-acrylic emulsion, 0.3-0.7% defoamer, 0.1-0.3% preservative, with the balance being distilled water.

[0006] Furthermore, the preservative is sodium propionate, the defoamer is a mixture of organosilicon and mineral oil, and the surfactant is an alkoxylated alcohol.

[0007] In addition, this invention also discloses a spraying device for nanoscale photocatalytic coatings, including a main body. A first protective chamber is fixedly connected to the front of the main body, and a second protective chamber is fixedly connected to the rear of the main body. A ring conveyor line is bolted to the upper inside of the first and second protective chambers. A bracket is driven to the lower part of the ring conveyor line, and an electric heating tube to be sprayed is connected to the lower part of the bracket. Spray nozzles are respectively embedded in the front and rear sides of the main body. A pressurized mixing chamber is fixedly connected to the upper part of the main body. A compressed air connector for receiving pressurized air is connected to the upper left side of the pressurized mixing chamber. A feed pipe for receiving coating is fixedly connected to the upper right side of the pressurized mixing chamber. An outlet pipe is fixedly connected to the lower part of the pressurized mixing chamber, and the outlet pipe is connected to the spray nozzle through a connecting branch pipe.

[0008] Furthermore, the bracket includes an elastic top plate, with hanging holes on the left and right sides of the elastic top plate, and the end of the heating element is disposed inside the hanging hole.

[0009] Furthermore, the lower parts of the first and second protective chambers are respectively fixedly connected with water-blocking strips, the height of which is 5-10 centimeters.

[0010] Furthermore, the upper part of the elastic top plate is connected to a vertical plate by long bolts, and the lower part of the vertical plate is provided with screw holes.

[0011] Furthermore, the first and second protective chambers are respectively connected to blowout shields via hinges, and the hinges are damping hinges.

[0012] Furthermore, it also includes a mixing tank, the top of which is fixedly connected to a motor, and the lower end of the output shaft of the motor is fixedly connected to a stirring blade.

[0013] Furthermore, a water pump is fixedly connected to the upper part of the mixing tank, and the outlet of the water pump is connected to the feed pipe through a connecting pipe.

[0014] Furthermore, the upper part of the mixing tank is provided with a paint inlet, and a cover is snapped onto the paint inlet. The lower part of the mixing tank is fixedly connected with a support leg, and the lower part of the mixing tank is provided with a discharge valve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. Nano titanium dioxide, as the main photocatalytic component, can generate strong oxidation under light conditions, effectively decomposing harmful gases such as formaldehyde and benzene. Nitrate, as an auxiliary catalyst, helps to improve the photocatalytic activity of nano titanium dioxide, promote the decomposition of harmful substances, enhance the overall purification effect of the coating, and achieve automatic descaling on the surface of the electric heating tube.

[0017] 2. A continuous conveyor line feeds the workpieces to be coated into the coating area, ensuring the continuity and efficiency of the coating operation. The rack design can accommodate workpieces of different sizes and shapes, ensuring the workpieces remain stable during the coating process and improving coating accuracy. The flexible top plate automatically adjusts its position according to the size of the workpiece, allowing the workpiece to be securely suspended on the rack, avoiding uneven coating caused by workpiece shaking. Through pressurized mixing, the paint and air are fully mixed, improving the uniformity and efficiency of the coating and ensuring coating quality. The protective chamber also acts as a paint rebound chamber. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the circular conveyor line provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the protective chamber provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the hanging bracket provided by the present invention;

[0023] Figure 5 This is a schematic diagram of the nozzle provided by the present invention;

[0024] Figure 6 This is a schematic diagram of the pressurized mixing chamber provided by the present invention.

[0025] In the diagram: 1. Mixing tank; 2. Water pump; 3. Second protective chamber; 4. Connecting pipe; 5. Main body; 6. First protective chamber; 7. Anti-blowout plate; 8. Circular conveyor line; 9. Hanger; 91. Vertical plate; 92. Elastic top plate; 93. Hanging hole; 94. Long bolt; 10. Pressurized mixing box; 11. Electric heating tube; 12. Water baffle; 13. Nozzle; 14. Motor; 15. Paint inlet; 16. Compressed air connector; 17. Feed pipe; 18. Discharge pipe; 19. Connecting branch pipe. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a nanoscale photocatalytic coating.

[0028] The coating is composed of the following materials by weight percentage: 10-25% nano titanium dioxide, 0.5-1.0% nitrate, 0.6-1.0% dispersant, 10-15% aluminum oxide solution, 0.1-0.2% surfactant, 0.1-0.2% pH adjuster, 3.5-5.5% propylene glycol, 5.0-6.5% zinc oxide solution, 8-12% calcined limestone, 3-5% aluminum sulfate, 35-45% styrene-acrylic emulsion, 0.3-0.7% defoamer, 0.1-0.3% preservative, and the balance being distilled water.

[0029] Furthermore, the preservative is sodium propionate, the defoamer is a mixture of organosilicon and mineral oil, and the surfactant is an alkoxylated alcohol.

[0030] In addition, the present invention also discloses a spraying device for nanoscale photocatalytic coating, including a main body 5, a first protective chamber 6 fixedly connected to the front of the main body 5, a second protective chamber 3 fixedly connected to the rear of the main body 5, an annular conveyor line 8 connected to the upper inside of the first protective chamber 6 and the second protective chamber 3 by bolts, a bracket 9 connected to the lower part of the annular conveyor line 8, an electric heating tube 11 to be sprayed connected to the lower part of the bracket 9, a spray nozzle 13 respectively embedded on the front and rear sides of the main body 5, a pressurized mixing chamber 10 fixedly connected to the upper part of the main body, a compressed air connector 16 for receiving pressurized air connected to the upper left side of the pressurized mixing chamber 10, a feed pipe 17 for receiving coating fixedly connected to the upper right side of the pressurized mixing chamber 10, and a discharge pipe 18 fixedly connected to the lower part of the pressurized mixing chamber 10, the discharge pipe 18 being connected to the spray nozzle 13 through a connecting branch pipe 19.

[0031] The bracket 9 includes an elastic top plate 92, with hanging holes 93 on the left and right sides of the elastic top plate 92, and the end of the electric heating tube 11 is located inside the hanging hole 93.

[0032] The lower parts of the first protective chamber 6 and the second protective chamber 3 are respectively fixedly connected with water-blocking strips 12, and the height of the water-blocking strips 12 is 5-10 cm.

[0033] The upper part of the elastic top plate 92 is connected to a vertical plate 91 by a long bolt 94, and the lower part of the vertical plate 91 is provided with screw holes.

[0034] Blowout shields 7 are connected to the first protective chamber 6 and the second protective chamber 3 by hinges, which are damping hinges.

[0035] It also includes a mixing tank 1, with a motor 14 fixedly connected to the top of the mixing tank 1, and a stirring blade fixedly connected to the lower end of the output shaft of the motor 14.

[0036] A water pump 2 is fixedly connected to the upper part of the mixing tank 1, and the outlet of the water pump 2 is connected to the feed pipe 17 through the connecting pipe 4.

[0037] The upper part of the mixing tank 1 is provided with a paint inlet 15, and a cover is snapped onto the paint inlet 15. The lower part of the mixing tank 1 is fixedly connected with a support leg, and the lower part of the mixing tank 1 is provided with a discharge valve.

[0038] Through a carefully designed nanoscale photocatalytic coating formula, the coating achieves high stability and excellent photocatalytic performance. The function and application are then explained, and finally, a highly efficient air purification effect is achieved.

[0039] Nano-titanium dioxide, as the main photocatalytic component, exhibits strong oxidizing power under light conditions, effectively decomposing harmful gases such as formaldehyde and benzene to achieve air purification. By optimizing its content ratio, photocatalytic efficiency can be improved while ensuring the stability of the coating. A proper formulation of nano-titanium dioxide ensures the efficient conduct of the photocatalytic reaction, thereby significantly improving air purification efficiency. This solves the problem of low photocatalytic efficiency in existing photocatalytic coatings.

[0040] Alumina solution and zinc oxide solution can serve as carriers for photocatalysts, enhancing the loading capacity of nano-titanium dioxide and increasing the number of photocatalytic active sites, thereby improving the photocatalytic efficiency of the coating. The introduction of these two carrier materials improves the dispersion and loading of nano-titanium dioxide, enhancing the efficiency of the photocatalytic reaction. This solves the problem of easy aggregation of nano-titanium dioxide and improves the photocatalytic activity of the photocatalytic coating.

[0041] Propylene glycol, as a solvent, helps improve the rheological and film-forming properties of coatings, ensuring a uniform and smooth coating, which is beneficial for improving photocatalytic efficiency. The presence of propylene glycol improves the leveling and film-forming properties of the coating, ensuring coating uniformity. This solves the problem of decreased photocatalytic efficiency caused by uneven coating.

[0042] The selection of preservatives helps prevent microbial growth and extends the service life of the coating. The addition of preservatives ensures the effectiveness and stability of the coating during long-term storage, thus solving the problem of coatings being susceptible to microbial contamination.

[0043] By designing a specialized spraying device, uniform spraying and efficient curing of the coating were achieved, ultimately improving construction efficiency and coating quality.

[0044] The workpieces to be coated are continuously fed into the coating area via the circular conveyor line 8, ensuring the continuity and efficiency of the coating operation. The design of the circular conveyor line 8 makes the coating process more continuous and efficient, improving overall productivity and solving the problem of low efficiency in manual coating.

[0045] The flexible top plate 92 can automatically adjust its position according to the size of the workpiece, ensuring the workpiece is stably suspended on the hanger 9 and preventing uneven coating caused by workpiece movement. The design of the flexible top plate 92 ensures the workpiece remains stable during spraying, improving spraying accuracy. It solves the problem of uneven coating caused by workpiece movement during spraying.

[0046] The mixing tank 1 continuously stirs the paint, maintaining uniform paint composition, preventing sedimentation, ensuring consistent paint properties during spraying, and improving coating quality. The use of mixing tank 1 ensures the uniformity of paint composition, thereby improving coating quality. It solves the problem of uneven paint composition after prolonged standing.

[0047] In summary, by precisely controlling the proportions of each component and designing a dedicated spraying device, this invention not only improves the photocatalytic efficiency of nanoscale photocatalytic coatings but also significantly enhances the coating's stability, adhesion, and application efficiency, ultimately achieving a highly efficient, long-lasting, and uniform air purification effect. These improvements address several problems existing in the prior art, providing a more reliable and efficient solution for the application of photocatalytic coatings.

[0048] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A spraying device for nanoscale photocatalytic paint, characterized by: The utility model relates to a kind of electrothermal tube spraying machine, including main body (5), the front of the main body (5) is fixedly connected with first protective chamber (6), the rear of the main body (5) is fixedly connected with second protective chamber (3), the inside upper side of the first protective chamber (6) and second protective chamber (3) is connected with annular conveying line (8) by bolt, the lower part of the annular conveying line (8) is drivingly connected with hanger (9), the lower part of the hanger (9) is connected with the electrothermal tube (11) to be sprayed, the front side and rear side of the main body (5) are respectively embedded with spray head (13), the upper part of the main body is fixedly connected with pressurized mixing box (10), the left upper side of the pressurized mixing box (10) is connected with compressed air connector (16) for accessing pressurized air, the right upper side of the pressurized mixing box (10) is fixedly connected with feed pipe (17) for accessing coating, the lower part of the pressurized mixing box (10) is fixedly connected with discharge pipe (18), and the discharge pipe (18) is connected with spray head (13) by connecting branch pipe (19).

2. The nanoscale photocatalytic coating spraying device according to claim 1, characterized in that: The hanger (9) includes an elastic top plate (92), the left side and the right side of the elastic top plate (92) are respectively provided with a hanging hole (93), and the end of the electrothermal tube (11) is arranged in the hanging hole (93).

3. The nanoscale photocatalytic coating spraying device according to claim 2, characterized in that: The upper part of the elastic top plate (92) is connected with a vertical plate (91) through a long bolt (94), and the lower part of the vertical plate (91) is provided with a threaded hole.

4. The nanoscale photocatalytic coating spraying device according to claim 1, characterized in that: The lower part of the first protective chamber (6) and the second protective chamber (3) is respectively fixedly connected with a water baffle (12), and the height of the water baffle (12) is 5-10 cm.

5. The nanoscale photocatalytic coating spraying device according to claim 1, characterized in that: The first protective chamber (6) and the second protective chamber (3) are respectively connected with a spray-proof plate (7) through a hinge, and the hinge is a damping hinge.

6. The nanoscale photocatalytic coating spraying device according to claim 1, characterized in that: Further comprising a stirring tank (1), the top of the stirring tank (1) is fixedly connected with a motor (14), the lower end of the output shaft of the motor (14) is fixedly connected with a stirring blade.

7. The nanoscale photocatalytic coating spraying device according to claim 6, characterized in that: The upper part of the stirring tank (1) is fixedly connected with a water pump (2), and the water outlet of the water pump (2) is connected with the feed pipe (17) through a connecting pipe (4).

8. The nanoscale photocatalytic coating spraying device according to claim 7, characterized in that: The upper part of the stirring tank (1) is provided with a coating inlet (15), the coating inlet (15) is clamped with a cover, the lower part of the stirring tank (1) is fixedly connected with a supporting leg, and the lower part of the stirring tank (1) is provided with a discharge valve.

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