A device for applying a photocatalytic active material to the surface of bamboo-wood boards

Abstract

The present invention relates to the technical field of board spraying, and particularly to an application device for the surface of bamboo and wood boards with photocatalytic active materials, including a bottom plate; it also includes a driving mechanism, two clamping plates, two mounting frames, a sliding table mechanism, a workbench, a particle tank unit, a particle spray gun and a spraying assembly. The driving mechanism is installed on the bottom plate, and the driving mechanism drives the clamping plates to relatively approach and clamp the bamboo and wood boards. The two mounting frames are relatively installed on the driving mechanism, and the driving mechanism drives the two mounting frames to move longitudinally. The sliding table mechanism is installed on the two mounting frames, and the sliding table mechanism drives the workbench to move horizontally. The particle tank unit and the spraying assembly are installed on the workbench. The interior of the particle tank unit is filled with photocatalytic active material particles, and the output end of the particle tank unit is installed with a particle spray gun. The spraying assembly is used to apply the liquefied photocatalytic active material to the bamboo and wood boards; it roughens the surface of the bamboo and wood boards before coating to improve the firmness and aesthetics of the photocatalytic active materials.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet spraying, and particularly to an application device for applying a photocatalytic active material to the surface of bamboo and wood sheets. Background Art

[0002] In order to improve the aesthetics, mildew prevention, anti-corrosion and waterproof performance, bamboo and wood sheets will be subjected to carbonization processing or surface coating processing, etc. Photocatalytic active materials, such as titanium dioxide, can generate strongly oxidizing hydroxyl radicals and superoxide radicals under ultraviolet or visible light irradiation, which can destroy the cell membranes and genetic materials of bacteria and viruses, achieving efficient sterilization. In the prior art, a variety of methods for applying photocatalytic active materials to the surface of sheets have been proposed. For example, in the Chinese invention patent with the publication number CN118832947B, a photocatalytic purification diatomite functional decorative board and its preparation method are provided. This preparation method provides a diatomite substrate and grinds the surface with sandpaper; a layer of heat-sensitive epoxy resin adhesive is evenly coated on the diatomite substrate; a carbon fiber mesh is laid on the uncured heat-sensitive epoxy resin layer, and then titanium dioxide / paraffin / aluminum oxide composite particles are scattered, and are compacted with a roller, and cured by an oven; the sheet is coated with a UV-cured resin as a weather-resistant protective layer, and cured with a UV lamp. The present invention significantly improves the composite particle distribution and fixation of the diatomite board by applying a carbon fiber mesh and a heat-sensitive epoxy resin adhesive, enhancing the mechanical strength and photocatalytic efficiency. The carbon fiber mesh and aluminum oxide in the structure increase the wear resistance, optimize the titanium dioxide distribution, and improve the air purification efficiency and thermal stability.

[0003] In the prior art, there are many technical solutions for applying photocatalytic active materials to the surfaces of recycled sheets and inorganic sheets, but there is less research on the equipment for applying photocatalytic active materials to the surface of bamboo and wood sheets. Therefore, in the field of bamboo and wood sheet processing, it is necessary to propose an application device for applying a photocatalytic active material to the surface of bamboo and wood sheets on the basis of the prior art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an application device for applying a photocatalytic active material to the surface of bamboo and wood sheets, which roughens the surface of the bamboo and wood sheets before coating to improve the firmness and aesthetics of the photocatalytic active material.

[0005] A surface application device for bamboo and wood boards with a photocatalytic active material of the present invention includes a bottom plate; it also includes a driving mechanism, two clamping plates, two mounting frames, a sliding table mechanism, a workbench, a particle tank unit, a particle spray gun, and a spraying component. The driving mechanism is installed on the bottom plate, the two clamping plates are relatively installed on the driving mechanism, and the driving mechanism drives the clamping plates to relatively approach and clamp the bamboo and wood boards. The two mounting frames are relatively installed on the driving mechanism, and the driving mechanism drives the two mounting frames to move longitudinally. The sliding table mechanism is installed on the two mounting frames, and the sliding table mechanism drives the workbench to move horizontally. The particle tank unit and the spraying component are installed on the workbench. The interior of the particle tank unit is filled with photocatalytic active material particles, and the output end of the particle tank unit is installed with a particle spray gun. The spraying component is used to apply the liquefied photocatalytic active material to the bamboo and wood boards; during operation, the driving mechanism drives the two clamping plates to approach and clamp the bamboo and wood boards. The interior of the particle tank unit is filled with powder particles of the photocatalytic active material. An acceleration mechanism for the photocatalytic active material is provided inside the particle tank unit. The acceleration mechanism is a compressed air injection mechanism or a shot blasting mechanism. The acceleration mechanism accelerates the photocatalytic active material in the particle tank unit and outputs it through the particle spray gun, causing the photocatalytic active material to impact the surface of the bamboo and wood boards at a high speed, creating micropores on the surface of the bamboo and wood boards and making the surface of the bamboo and wood boards rough, which is beneficial for the subsequent application of the liquefied photocatalytic active material. Adjust the speed and angle of the photocatalytic active material particles output by the particle spray gun so that the photocatalytic active material particles are obliquely injected into the gaps between the bamboo fibers from the side, enabling some of the photocatalytic active material particles to be embedded in the surface of the bamboo and wood boards. The driving mechanism drives the two mounting frames to move longitudinally, and the sliding table mechanism drives the workbench to move horizontally, so that the photocatalytic active material conducts a comprehensive impact treatment on the surface of the bamboo and wood boards. After the impact treatment is completed, the spraying component works to apply the solution or sol of the photocatalytic active material to the surface of the bamboo and wood boards. Since the surface of the bamboo and wood boards has been roughened before spraying, the firmness of the photocatalytic active material on the surface of the bamboo and wood boards is improved. By embedding the particles of the photocatalytic active material on the surface of the bamboo and wood boards, after the solution or sol of the photocatalytic active material applied by the spraying component solidifies, a particle thin layer is formed inside the coating. Since the photocatalytic active material coating based on titanium dioxide is usually transparent (for example, CY-CG coatings and Jiupeng photocatalytic self-cleaning coatings are both water-based ceramic photocatalytic coatings made of composite ceramics and superactive titanium dioxide materials, and they form a uniform nano-thin film on the coated surface with high transparency), and the particles of the titanium dioxide photocatalytic active material have multiple reflective surfaces, the particles will present a flash effect under light, thereby improving the aesthetics of the bamboo and wood boards.

[0006] Preferably, the spraying assembly includes a first spray pot and a first spray head. The first spray pot is installed on the workbench. The first spray pot stores a photocatalytic active material solution inside. The output end of the first spray pot is installed with the first spray head. The photocatalytic active material solution is a titanium dioxide dispersion liquid. Polyvinylpyrrolidone, sodium dodecyl sulfate, potassium phosphate salts or a compound of polycarboxylate and silicate is used as a dispersant. Compressed air or pressure is input into the first spray pot, so that the dispersion liquid is sprayed out in a mist through the first spray head. The driving mechanism drives the two mounting brackets to move longitudinally, and the sliding table mechanism drives the workbench to move horizontally, so as to evenly spray the titanium dioxide dispersion liquid on the surface of the bamboo and wood boards. After the dispersion liquid is cured, the application operation is completed.

[0007] Preferably, it further includes a second spray pot, a second spray head, a first electrode and a second electrode. The second spray pot is installed on the workbench. The second spray pot stores a second photocatalytic active material solution inside. The second photocatalytic active material solution has conductivity. The concentration of the second photocatalytic active material solution is less than the concentration of the photocatalytic active material solution stored inside the first spray pot. The output end of the second spray pot is installed with the second spray head. The second spray head is located in front of the first spray head. The first electrode is installed on the first spray head, and the second electrode is installed on the clamping plate. The concentration of the second photocatalytic active material solution is between 0.2% and 0.7%, and glacial acetic acid is added to dissolve part of the titanium dioxide to make the second photocatalytic active material solution conductive. The concentration of the photocatalytic active material solution is between 2% and 7%. Since the second spray head is located in front of the first spray head, the second spray head sprays the second photocatalytic active material solution on the surface of the bamboo and wood boards before the first spray pot, so that the surface of the bamboo and wood boards has conductivity. The first electrode and the second electrode respectively make the droplets of the photocatalytic active material solution sprayed out by the first spray head and the surface of the bamboo and wood boards carry different charges, so as to perform electrostatic spraying, so that the droplets of the photocatalytic active material solution are evenly adsorbed on the surface of the bamboo and wood boards, improving the firmness of the photocatalytic active material and overcoming the problem that non-conductive bamboo and wood boards cannot be electrostatically sprayed.

[0008] Preferably, it further includes two fixed end plates, a first extraction pipe, two side plates, and multiple first push cylinders. The two sliding table mechanisms are respectively installed at the front and rear ends of the bottom plate. The first extraction pipe is installed on the fixed end plate, and one end of the first extraction pipe extends into the inner side of the fixed end plate. The cross-sections of the two side plates are L-shaped. The lower parts of the two side plates are vertical plates, and the upper parts of the two side plates are flat plates. The lower edges of the vertical plates of the two side plates are respectively rotatably connected to the left and right ends of the bottom plate. Wear-resistant sealing strips are provided between the lower edges of the vertical plates of the two particle tank units and the bottom plate. One ends of the multiple first push cylinders are rotatably connected to the bottom plate, and the other ends of the multiple first push cylinders are respectively rotatably connected to the two side plates. The multiple first push cylinders drive the vertical plates of the two side plates to be laid flat or erected. After the vertical plates of the two side plates are erected, the vertical plates of the two side plates enclose the space between the left and right ends of the two fixed end plates. The flat plates of the two side plates cooperate to enclose the space above the two fixed end plates. Wear-resistant sealing strips are provided between the two side plates and the fixed end plates, and wear-resistant sealing strips are provided between the opposite sides of the two side plates. After the surface of the bamboo-wood board is roughened by the impact of photocatalytic active material particles, the driving mechanism drives the two clamping plates to clamp the bamboo-wood board and descend. The multiple first push cylinders respectively drive the two side plates to turn inward, so that the two vertical plates of the two side plates respectively enclose the space between the left and right ends of the two fixed end plates. At the same time, the flat plates of the two side plates enclose the space above the two fixed end plates, so that the two fixed end plates and the two side plates form a sealed box. The first extraction pipe is connected to an external vacuum pump. The vacuum pump extracts the air in the sealed box through the first extraction pipe. The low-pressure state in the sealed box causes the air in the bamboo-wood board to be quickly discharged. At this time, the first spray pot, the first spray head, the second spray pot, and the second spray head cooperate to spray the bamboo-wood board. Since the air on the surface layer of the bamboo-wood board is discharged, the photocatalytic active material solution is more likely to fill the pores on the surface layer of the bamboo-wood board, improving the spraying firmness and penetration depth.

[0009] Preferably, the spraying mechanism includes a sol tank unit and a brush roller. The sol tank unit is installed on the workbench in a liftable manner. The inside of the sol tank unit stores photocatalytic active material sol. A brush roller is rotatably installed at the lower part of the sol tank unit, and the upper part of the brush roller is in contact with the photocatalytic active material sol stored inside the sol tank unit. The photocatalytic active material sol is formed by dissolving a photocatalytic material precursor (tetrabutyl titanate, isopropyl titanate, titanyl sulfate, etc.) in a solvent and then hydrolyzing to form a sol. After the surface of the bamboo-wood board is roughened by the impact of photocatalytic active material particles, the sol tank unit descends so that the lower part of the brush roller rolls into contact with the surface of the bamboo-wood board. The workbench drives the sol tank unit and the brush roller to move, so that the brush roller rolls to coat the photocatalytic active material sol stored inside the sol tank unit on the surface of the bamboo-wood board. After the surface of the bamboo-wood board is coated with the sol, it is sent to a high-temperature furnace for heating and curing.

[0010] Preferably, the driving mechanism includes two longitudinal beams, a double-headed push cylinder, four support arms, four second push cylinders, four first synchronous pulleys and four second synchronous pulleys, two telescopic longitudinal beams and two synchronous belts. The two longitudinal beams are slidably installed on the bottom plate relative to each other and move in the left-right direction. The double-headed push cylinder is installed on the bottom plate, and the two piston rods of the double-headed push cylinder are respectively connected to the two longitudinal beams. The first synchronous pulleys are rotatably installed at the front and rear ends of the two longitudinal beams. The lower ends of the four support arms are respectively rotatably connected to the front and rear ends of the two longitudinal beams. The lower ends of the four second push cylinders are respectively rotatably connected to the front and rear ends of the two longitudinal beams. The upper ends of the four second push cylinders are respectively rotatably connected to the middle parts of the four support arms. The second synchronous pulleys are rotatably installed at the upper ends of the four support arms. The two telescopic longitudinal beams are respectively located above the two longitudinal beams, and the two ends of the two telescopic longitudinal beams are respectively rotatably connected to the upper ends of the four support arms. The two synchronous belts are respectively located above the two longitudinal beams, and the two synchronous belts are respectively sleeved on the four first synchronous pulleys and the four second synchronous pulleys. Tensioning assemblies for the two synchronous belts are respectively installed on the two longitudinal beams. The two mounting brackets are respectively installed on the two synchronous belts through connecting components. The two clamping plates are respectively installed on the two telescopic longitudinal beams. When the two piston rods of the double-headed push cylinder extend synchronously, they push the two longitudinal beams to move relatively away from each other. When the two piston rods of the double-headed push cylinder contract synchronously, they pull the two longitudinal beams to move relatively closer to each other, so that the two clamping plates release or clamp the bamboo and wood boards, drive the two synchronous belts to rotate synchronously, and make the two synchronous belts drive the two mounting brackets to move synchronously back and forth, so that the two mounting brackets, the sliding table mechanism and the workbench move back and forth to realize the deburring treatment and spraying of the bamboo and wood boards. When the piston rods of the four second push cylinders extend synchronously, the two support arms are laid flat outward, and the two telescopic longitudinal beams are lowered. In this process, the two telescopic longitudinal beams are stretched. When the piston rods of the four second push cylinders contract synchronously, the two support arms are erected inward, and the two telescopic longitudinal beams are raised. In this process, the two telescopic longitudinal beams are compressed. The tensioning assemblies keep the two synchronous belts in a tensioned state, and the driving direction is diverse.

[0011] Preferably, it further includes two collection troughs, two material discharge openings, two collection hoppers, and two second extraction pipes. The two clamping plates are respectively installed on the two telescopic longitudinal beams. The lower end surfaces of the two synchronous belts are in frictional contact with the lower end surfaces of the two clamping plates. Collection troughs are arranged on the upper parts of the two clamping plates. A plurality of through holes are arranged in a straight line at the bottoms of the two collection troughs. Material discharge openings are arranged on the two synchronous belts. The two material discharge openings are located below the two collection troughs. The two collection hoppers are respectively installed on the lower surfaces of the two synchronous belts. The upper openings of the two collection hoppers are respectively communicated with the two material discharge openings. Second extraction pipes are installed on the two collection hoppers. The two second extraction pipes are communicated with the interiors of the two collection hoppers. The two second extraction pipes are connected to an external air extractor. The air extractor extracts the air in the two collection hoppers through the two second extraction pipes, making the interiors of the two collection hoppers in a negative pressure state. When using the particles of the photocatalytic active material to impact the surface of the bamboo-wood board for roughening treatment, the redundant particles of the photocatalytic active material that are not embedded in the surface of the bamboo-wood board are blown into the two collection troughs of the two clamping plates and then sucked into the two collection hoppers through the plurality of through holes and the two material discharge openings for collection. Since the two synchronous belts drive the two collection hoppers and the two mounting frames to move synchronously, the intersecting parts of the two material discharge openings and the plurality of through holes of the two collection troughs always follow the particle tank unit and the particle spray gun, so that the redundant particles of the photocatalytic active material that are not embedded in the surface of the bamboo-wood board are timely absorbed into the two collection hoppers, realizing the efficient recovery of the redundant particles of the photocatalytic active material that are not embedded in the surface of the bamboo-wood board.

[0012] Preferably, it further includes two vertical partition plates. The two vertical partition plates are respectively installed vertically in the two collection hoppers. The upper edges of the two vertical partition plates are respectively connected to the top walls of the two collection hoppers. Gaps are provided between the lower edges of the two vertical partition plates and the bottoms of the two collection hoppers respectively. The two vertical partition plates are respectively located inside the upper openings of the two collection hoppers. The two second extraction pipes are respectively located above the insides of the two collection hoppers. The two second extraction pipes are respectively higher than the lower edges of the two vertical partition plates. The two vertical partition plates divide the interiors of the two collection hoppers into two parts, an inner part and an outer part, so that a U-shaped channel is formed inside the two collection hoppers, preventing the redundant particles of the photocatalytic active material that are not embedded in the surface of the bamboo-wood board from being drawn away by the two second extraction pipes, and at the same time drawing away the bamboo chips that are impacted out, realizing the preliminary separation of the particles of the photocatalytic active material and the bamboo chips.

[0013] Preferably, it further includes two slide rails, two sliders and four push blocks. Slide rails are installed on both telescopic longitudinal beams, sliders are installed in the middle of both clamping plates, and both clamping plates are slidably installed in two push cylinders II through the two sliders respectively. Two push blocks are installed on both synchronous belts, and the two push blocks are respectively located on the front and rear sides of both clamping plates. The four push blocks are respectively aligned with the two ends of the two sliders. After the surface of the bamboo-wood board is sprayed, the two synchronous belts rotate synchronously, so that the two push blocks on the two synchronous belts contact one end of the two sliders. The two synchronous belts continue to rotate, so that the two push blocks push the two sliders along the two slide rails, so that the two clamping plates move along the two telescopic longitudinal beams, so as to push the bamboo-wood board out of the two telescopic longitudinal beams and realize the conveying of the bamboo-wood board.

[0014] Preferably, it further includes four magnetic attraction blocks I, four magnetic attraction blocks II and four magnetic attraction blocks III. Magnetic attraction blocks I are installed at the front and rear ends of both collection hoppers. Two magnetic attraction blocks II are installed on both synchronous belts. The two magnetic attraction blocks II are respectively located on the front and rear sides of the two material dropping ports. The four magnetic attraction blocks II are respectively used to adsorb the four magnetic attraction blocks I. Magnetic attraction blocks III are installed at both ends of the two telescopic longitudinal beams. The four magnetic attraction blocks III are respectively used to adsorb the four magnetic attraction blocks I. When roughing and spraying the surface of the bamboo-wood board, the two collection hoppers are respectively adsorbed on the four magnetic attraction blocks II through the two magnetic attraction blocks I. At this time, the two synchronous belts can drive the two collection hoppers to move synchronously. After the bamboo-wood board is sprayed, the two synchronous belts drive the two collection hoppers to move to one end of the two telescopic longitudinal beams, so that the two magnetic attraction blocks I on the two collection hoppers are adsorbed to the corresponding two magnetic attraction blocks III, and at the same time, the adsorption between the four magnetic attraction blocks II and the four magnetic attraction blocks I is disconnected. At this time, the two synchronous belts continue to rotate and no longer drive the two collection hoppers to move. At this time, the two synchronous belts continue to rotate and can make the two push blocks respectively push the two sliders to drive the two clamping plates to move along the two slide rails, realizing the long-distance conveying of the bamboo-wood board.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Since the surface of the bamboo-wood board is roughened before spraying, it is beneficial to improve the firmness of the photocatalytic active material on the surface of the bamboo-wood board. By embedding the particles of the photocatalytic active material on the surface of the bamboo-wood board, after the photocatalytic active material solution or sol applied by the spraying assembly is cured, a particle layer is formed inside the coating. Since the photocatalytic active material coating based on titanium dioxide is usually transparent, and the particles of the titanium dioxide photocatalytic active material have multiple reflective surfaces, the particles will present a flash effect under light, thus improving the aesthetics of the bamboo-wood board. Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present invention;

[0017] Figure 2 is the side-sectional structural schematic diagram of the present invention;

[0018] Figure 3 is a front sectional structure schematic diagram of the present invention;

[0019] Figure 4 is a structure schematic diagram of the spraying working state of the present invention;

[0020] Figure 5 is a structure schematic diagram of the combined state of the fixed end plate and the side plate of the present invention;

[0021] Figure 6 is a structure schematic diagram of structures such as the mounting frame, the slide table mechanism, the workbench, the particle tank unit, the particle spray gun, and the spraying mechanism;

[0022] Figure 7 is a structure schematic diagram of structures such as the bottom plate and the driving mechanism;

[0023] Figure 8 is a structure schematic diagram of the exploded state of structures such as the driving mechanism and the clamping plate;

[0024] Figure 9 is a structure schematic diagram of structures such as the collection hopper, the vertical partition plate, the magnetic attraction block one, and the magnetic attraction block three;

[0025] Figure 10 is a structure schematic diagram of the clamping plate and the collection groove;

[0026] Figure 11 is a structure schematic diagram of structures such as the clamping plate and the collection hopper.

[0027] Reference numerals in the drawings: 1, bottom plate; 2, driving mechanism; 3, clamping plate; 4, mounting frame; 5, slide table mechanism; 6, workbench; 7, particle tank unit; 8, particle spray gun; 9, spray pot one; 10, spray head one; 11, spray pot two; 12, spray head two; 13, electrode one; 14, electrode two; 15, fixed end plate; 16, suction pipe one; 17, side plate; 18, push cylinder one; 19, sol tank unit; 20, brush roller; 21, longitudinal beam; 22, double-headed push cylinder; 23, support arm; 24, push cylinder two; 25, synchronous pulley one; 26, synchronous pulley two; 27, telescopic longitudinal beam; 28, synchronous belt; 29, collection groove; 30, blanking port; 31, collection hopper; 32, suction pipe two; 33, vertical partition plate; 34, slide rail; 35, slider; 36, push block; 37, magnetic attraction block one; 38, magnetic attraction block two; 39, magnetic attraction block three. Detailed implementation manners

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0029] Example 1, as shown in Figures 1 to 6 A surface application device for bamboo-wood boards with photocatalytic active materials, including a bottom plate 1; also including a driving mechanism 2, two clamping plates 3, two mounting brackets 4, a sliding table mechanism 5, a workbench 6, a particle tank unit 7, a particle spray gun 8 and a spraying component. The driving mechanism 2 is installed on the bottom plate 1, the two clamping plates 3 are relatively installed on the driving mechanism 2, and the driving mechanism 2 drives the clamping plates 3 to relatively approach and clamp the bamboo-wood board. The two mounting brackets 4 are relatively installed on the driving mechanism 2, and the driving mechanism 2 drives the two mounting brackets 4 to move longitudinally. The sliding table mechanism 5 is installed on the two mounting brackets 4, and the sliding table mechanism 5 drives the workbench 6 to move horizontally. The particle tank unit 7 and the spraying component are installed on the workbench 6. The interior of the particle tank unit 7 is filled with photocatalytic active material particles, and the output end of the particle tank unit 7 is installed with the particle spray gun 8. The spraying component is used to apply the liquefied photocatalytic active material to the bamboo-wood board; the spraying component includes a first spray pot 9 and a first spray head 10. The first spray pot 9 is installed on the workbench 6, and the interior of the first spray pot 9 stores the photocatalytic active material solution. The output end of the first spray pot 9 is installed with the first spray head 10; also including a second spray pot 11, a second spray head 12, a first electrode 13 and a second electrode 14. The second spray pot 11 is installed on the workbench 6, and the interior of the second spray pot 11 stores the second photocatalytic active material solution. The second photocatalytic active material solution has electrical conductivity, and the concentration of the second photocatalytic active material solution is less than the concentration of the photocatalytic active material solution stored in the interior of the first spray pot 9. The output end of the second spray pot 11 is installed with the second spray head 12. The second spray head 12 is located in front of the first spray head 10. The first electrode 13 is installed on the first spray head 10, and the second electrode 14 is installed on the clamping plate 3.

[0030] During operation, the driving mechanism 2 drives the two clamping plates 3 to approach and clamp the bamboo and wood boards. The particle tank unit 7 is filled with powder particles of the photocatalytic active material. An acceleration mechanism for the photocatalytic active material is arranged inside the particle tank unit 7. The acceleration mechanism is a compressed air injection mechanism or a shot blasting mechanism. The acceleration mechanism accelerates the photocatalytic active material in the particle tank unit 7 and outputs it through the particle spray gun 8, so that the photocatalytic active material impacts the surface of the bamboo and wood boards at high speed, creating micropores on the surface of the bamboo and wood boards and making the surface of the bamboo and wood boards rough, which is beneficial to the subsequent application of the liquefied photocatalytic active material. Adjust the speed and angle of the photocatalytic active material particles output by the particle spray gun 8 so that the photocatalytic active material particles are obliquely injected from the side into the gaps between the bamboo fibers, enabling some of the photocatalytic active material particles to be embedded in the surface of the bamboo and wood boards. The driving mechanism 2 drives the two mounting brackets 4 to move longitudinally, and the sliding table mechanism 5 drives the workbench 6 to move horizontally, so that the photocatalytic active material conducts a comprehensive impact treatment on the surface of the bamboo and wood boards. After the impact treatment is completed, the spraying assembly works to apply a solution or sol of the photocatalytic active material to the surface of the bamboo and wood boards. Since the surface of the bamboo and wood boards has been roughened before spraying, the firmness of the photocatalytic active material on the surface of the bamboo and wood boards is improved. By embedding the particles of the photocatalytic active material on the surface of the bamboo and wood boards, after the solution or sol of the photocatalytic active material applied by the spraying assembly solidifies, a particle layer is formed inside the coating. Since the photocatalytic active material coating based on titanium dioxide is usually transparent (for example, CY-CG coatings and Jiupeng photocatalytic self-cleaning coatings are both water-based ceramic photocatalytic coatings made of composite ceramics and superactive titanium dioxide materials, and they form a uniform nano-thin film on the coated surface with high transparency), and the particles of the titanium dioxide photocatalytic active material have multiple reflective surfaces, the particles will present a flash effect under light, thereby improving the aesthetics of the bamboo and wood boards.

[0031] The photocatalytic active material solution is a titanium dioxide dispersion, using polyvinylpyrrolidone PVP or sodium dodecyl sulfate SDS as a dispersant. The concentration of the photocatalytic active material solution II is between 0.2% and 0.7%, and glacial acetic acid is added to dissolve part of the titanium dioxide to make the photocatalytic active material solution II conductive. The concentration of the titanium dioxide dispersion is between 2% and 7%. Since the spray head II 12 is located in front of the spray head I 10, the spray head II 12 sprays the photocatalytic active material solution II onto the surface of the bamboo-wood board before the spray pot I 9, making the surface of the bamboo-wood board conductive. The electrode I 13 and the electrode II 14 respectively make the droplets of the photocatalytic active material solution sprayed by the spray head I 10 and the surface of the bamboo-wood board carry different charges. Compressed air or pressure is input into the interior of the spray pot I 9, so that the dispersion is atomized and sprayed through the spray head I 10, thereby performing electrostatic spraying, making the droplets of the photocatalytic active material solution evenly adsorbed on the surface of the bamboo-wood board. The driving mechanism 2 drives the two mounting frames 4 to move longitudinally, and the sliding table mechanism 5 drives the workbench 6 to move horizontally, evenly spraying the titanium dioxide dispersion on the surface of the bamboo-wood board. After the dispersion is cured, the application operation is completed, improving the firmness of the photocatalytic active material and overcoming the problem that non-conductive bamboo-wood boards cannot be electrostatically sprayed.

[0032] It also includes two fixed end plates 15, an air extraction pipe I 16, two side plates 17 and a plurality of push cylinders I 18. The two sliding table mechanisms 5 are respectively installed at the front and rear ends of the bottom plate 1. The air extraction pipe I 16 is installed on the fixed end plate 15. One end of the air extraction pipe I 16 extends into the inner side of the fixed end plate 15. The cross-sections of the two side plates 17 are L-shaped. The lower parts of the two side plates 17 are vertical plates, and the upper parts of the two side plates 17 are flat plates. The lower edges of the vertical plates of the two side plates 17 are respectively rotatably connected to the left and right ends of the bottom plate 1. Wear-resistant sealing strips are provided between the lower edges of the vertical plates of the two particle tank units 7 and the bottom plate 1. One end of the plurality of push cylinders I 18 is rotatably connected to the bottom plate 1, and the other ends of the plurality of push cylinders I 18 are respectively rotatably connected to the two side plates 17. The plurality of push cylinders I 18 drive the vertical plates of the two side plates 17 to be laid flat or erected. When the vertical plates of the two side plates 17 are erected, the vertical plates of the two side plates 17 enclose the space between the left and right ends of the two fixed end plates 15, and the flat plates of the two side plates 17 cooperate to enclose the space above the two fixed end plates 15. Wear-resistant sealing strips are provided between the two side plates 17 and the fixed end plates 15, and wear-resistant sealing strips are provided between the opposite sides of the two side plates 17.

[0033] After the surface of the bamboo-wood board is roughened by the impact of photocatalytic active material particles, the driving mechanism 2 drives the two clamping plates 3 to clamp the bamboo-wood board and descend. A plurality of first push cylinders 18 respectively drive the two side plates 17 to turn inwards, so that the two vertical plates of the two side plates 17 respectively enclose the space between the left and right ends of the two fixed end plates 15. At the same time, the flat plates of the two side plates 17 enclose the space above the two fixed end plates 15, so that the two fixed end plates 15 and the two side plates 17 form a sealed box body. The first air extraction pipe 16 is connected to an external vacuum pump, and the vacuum pump extracts the air in the sealed box body through the first air extraction pipe 16. The low-pressure state in the sealed box body enables the air in the bamboo-wood board to be quickly discharged. At this time, the first spray pot 9, the first spray head 10, the second spray pot 11 and the second spray head 12 cooperate to spray the bamboo-wood board. Since the air on the surface layer of the bamboo-wood board is discharged, the photocatalytic active material solution is more easily filled into the pores on the surface layer of the bamboo-wood board, improving the spraying firmness and penetration depth.

[0034] Example 2, as Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, an apparatus for applying a photocatalytic active material to the surface of a bamboo-wood board includes a bottom plate 1; it further includes a driving mechanism 2, two clamping plates 3, two mounting frames 4, a sliding table mechanism 5, a workbench 6, a particle tank unit 7, a particle spray gun 8 and a spraying assembly. The driving mechanism 2 is installed on the bottom plate 1, the two clamping plates 3 are relatively installed on the driving mechanism 2, and the driving mechanism 2 drives the clamping plates 3 to relatively approach and clamp the bamboo-wood board. The two mounting frames 4 are relatively installed on the driving mechanism 2, and the driving mechanism 2 drives the two mounting frames 4 to move longitudinally. The sliding table mechanism 5 is installed on the two mounting frames 4, and the sliding table mechanism 5 drives the workbench 6 to move horizontally. The particle tank unit 7 and the spraying assembly are installed on the workbench 6. The interior of the particle tank unit 7 is filled with photocatalytic active material particles, and the output end of the particle tank unit 7 is installed with a particle spray gun 8. The spraying assembly is used to apply the liquefied photocatalytic active material to the bamboo-wood board; the spraying mechanism includes a sol tank unit 19 and a brush roller 20. The sol tank unit 19 is liftably installed on the workbench 6. The interior of the sol tank unit 19 stores a photocatalytic active material sol. The lower part of the sol tank unit 19 is rotatably installed with a brush roller 20, and the upper part of the brush roller 20 is in contact with the photocatalytic active material sol stored in the interior of the sol tank unit 19; the photocatalytic active material sol is formed by dissolving a photocatalytic material precursor (such as tetrabutyl titanate) in a solvent and then hydrolyzing to form a sol; after the surface of the bamboo-wood board is roughened by the impact of photocatalytic active material particles, the sol tank unit 19 descends so that the lower part of the brush roller 20 rolls in contact with the surface of the bamboo-wood board. The workbench 6 drives the sol tank unit 19 and the brush roller 20 to move, so that the brush roller 20 rolls to coat the photocatalytic active material sol stored in the interior of the sol tank unit 19 onto the surface of the bamboo-wood board. After the surface of the bamboo-wood board is coated with the sol, it is sent to a high-temperature furnace for heating and curing.

[0035] Example 3, as Figure 1 、 Figures 7 to 11 shown, on the basis of Examples 1 and 2, the driving mechanism 2 includes two longitudinal beams 21, a double-headed push cylinder 22, four support arms 23, four second push cylinders 24, four first synchronous pulleys 25 and four second synchronous pulleys 26, two telescopic longitudinal beams 27 and two synchronous belts 28. The two longitudinal beams 21 are slidably installed on the bottom plate 1 relatively, and the two longitudinal beams 21 move in the left-right direction. The double-headed push cylinder 22 is installed on the bottom plate 1, and the two piston rods of the double-headed push cylinder 22 are respectively connected to the two longitudinal beams 21. The first synchronous pulleys 25 are rotatably installed at the front and rear ends of the two longitudinal beams 21. The lower ends of the four support arms 23 are respectively rotatably connected to the front and rear ends of the two longitudinal beams 21. The lower ends of the four second push cylinders 24 are respectively rotatably connected to the front and rear ends of the two longitudinal beams 21. The upper ends of the four second push cylinders 24 are respectively rotatably connected to the middle parts of the four support arms 23. The second synchronous pulleys 26 are rotatably installed at the upper ends of the four support arms 23. The two telescopic longitudinal beams 27 are respectively located above the two longitudinal beams 21. The two ends of the two telescopic longitudinal beams 27 are respectively rotatably connected to the upper ends of the four support arms 23. The two synchronous belts 28 are respectively located above the two longitudinal beams 21. The two synchronous belts 28 are respectively sleeved on the two first synchronous pulleys 25 and the two second synchronous pulleys 26. Tensioning assemblies for the two synchronous belts 28 are respectively installed on the two longitudinal beams 21. The two mounting brackets 4 are respectively installed on the two synchronous belts 28 through connecting components. The two clamping plates 3 are respectively installed on the two telescopic longitudinal beams 27.

[0036] The two piston rods of the double-headed push cylinder 22 extend synchronously to push the two longitudinal beams 21 to move relatively away from each other, and the two piston rods of the double-headed push cylinder 22 contract synchronously to pull the two longitudinal beams 21 to move relatively closer to each other, so as to release or clamp the bamboo and wood boards by the two clamping plates 3, drive the two synchronous belts 28 to rotate synchronously, so that the two synchronous belts 28 respectively drive the two mounting brackets 4 to move synchronously back and forth, so that the two mounting brackets 4, the sliding table mechanism 5 and the workbench 6 move back and forth, realizing the deburring treatment and spraying of the bamboo and wood boards. The piston rods of the four second push cylinders 24 extend synchronously to lay the two support arms 23 flat outward, lowering the height of the two telescopic longitudinal beams 27. In this process, the two telescopic longitudinal beams 27 are stretched. The piston rods of the four second push cylinders 24 contract synchronously to erect the two support arms 23 inward, raising the height of the two telescopic longitudinal beams 27. In this process, the two telescopic longitudinal beams 27 are compressed. The tensioning assemblies keep the two synchronous belts 28 in a tensioned state, and the driving directions are diverse.

[0037] It also includes two collection troughs 29, two blanking ports 30, two collection hoppers 31 and two second suction pipes 32. The two clamping plates 3 are respectively installed on the two telescopic longitudinal beams 27. The lower end surfaces of the two synchronous belts 28 are in frictional contact with the lower end surfaces of the two clamping plates 3. Collection troughs 29 are arranged on the upper parts of the two clamping plates 3. A plurality of through holes are arranged in a straight line at the bottoms of the two collection troughs 29. Blanking ports 30 are arranged on the two synchronous belts 28. The two blanking ports 30 are located below the two collection troughs 29. The two collection hoppers 31 are respectively installed on the lower surfaces of the two synchronous belts 28. The upper openings of the two collection hoppers 31 are respectively communicated with the two blanking ports 30. Second suction pipes 32 are installed on the two collection hoppers 31. The two second suction pipes 32 are communicated with the interiors of the two collection hoppers 31. It also includes two vertical partition plates 33. The two vertical partition plates 33 are respectively installed vertically in the two collection hoppers 31. The upper edges of the two vertical partition plates 33 are respectively connected to the top walls of the two collection hoppers 31. Gaps are provided between the lower edges of the two vertical partition plates 33 and the bottoms of the two collection hoppers 31 respectively. The two vertical partition plates 33 are respectively located inside the upper openings of the two collection hoppers 31. The two second suction pipes 32 are respectively located above the interiors of the two collection hoppers 31. The two second suction pipes 32 are respectively higher than the lower edges of the two vertical partition plates 33. It also includes two slide rails 34, two sliders 35 and four push blocks 36. Slide rails 34 are installed on the two telescopic longitudinal beams 27. Sliders 35 are installed in the middle parts of the two clamping plates 3. The two clamping plates 3 are respectively slidably installed in the two second push cylinders 24 through the two sliders 35. Two push blocks 36 are installed on the two synchronous belts 28. The two push blocks 36 are respectively located on the front and rear sides of the two clamping plates 3. The four push blocks 36 are respectively aligned with the two ends of the two sliders 35. It also includes four first magnetic attraction blocks 37, four second magnetic attraction blocks 38 and four third magnetic attraction blocks 39. First magnetic attraction blocks 37 are installed at the front and rear ends of the two collection hoppers 31. Two second magnetic attraction blocks 38 are installed on the two synchronous belts 28. The two second magnetic attraction blocks 38 are respectively located on the front and rear sides of the two blanking ports 30. The four second magnetic attraction blocks 38 are respectively used for attracting the four first magnetic attraction blocks 37. Third magnetic attraction blocks 39 are installed at the two ends of the two telescopic longitudinal beams 27. The four third magnetic attraction blocks 39 are respectively used for attracting the four first magnetic attraction blocks 37.

[0038] When roughening and spraying the surface of bamboo-wood boards, two collecting hoppers 31 are respectively adsorbed on four magnet blocks two 38 through two magnet blocks one 37. At this time, two synchronous belts 28 can drive the two collecting hoppers 31 to move synchronously. Two air extraction pipes two 32 are connected to an external air extractor. The air extractor extracts the air in the two collecting hoppers 31 through the two air extraction pipes two 32, making the inside of the two collecting hoppers 31 in a negative pressure state. When using the particles of the photocatalytic active material to impact the surface of the bamboo-wood board for roughening treatment, the excess particles of the photocatalytic active material that are not embedded on the surface of the bamboo-wood board are blown into the two collecting grooves 29 of the two clamping plates 3 and then inhaled into the two collecting hoppers 31 through multiple through holes and two material dropping ports 30 for collection. Since the two synchronous belts 28 drive the two collecting hoppers 31 and the two mounting frames 4 to move synchronously, the intersecting part of the two material dropping ports 30 and the multiple through holes of the two collecting grooves 29 always follows the movement of the particle tank unit 7 and the particle spray gun 8, so that the excess particles of the photocatalytic active material that are not embedded on the surface of the bamboo-wood board are timely absorbed into the two collecting hoppers 31, realizing the efficient recovery of the excess particles of the photocatalytic active material that are not embedded on the surface of the bamboo-wood board. Two vertical partitions 33 divide the inside of the two collecting hoppers 31 into an inner part and an outer part, making a U-shaped channel formed inside the two collecting hoppers 31, avoiding the excess particles of the photocatalytic active material that are not embedded on the surface of the bamboo-wood board from being sucked away by the two air extraction pipes two 32, and at the same time sucking away the bamboo chips knocked out, realizing the preliminary separation of the particles of the photocatalytic active material and the bamboo chips. After the spraying on the surface of the bamboo-wood board is completed, the two synchronous belts 28 rotate synchronously. The two synchronous belts 28 drive the two collecting hoppers 31 to move to one end of the two telescopic longitudinal beams 27, so that the two magnet blocks one 37 on the two collecting hoppers 31 are adsorbed to the corresponding two magnet blocks three 39, and at the same time the adsorption effect between the four magnet blocks two 38 and the four magnet blocks one 37 is disconnected. At this time, when the two synchronous belts 28 continue to rotate, they no longer drive the two collecting hoppers 31 to move, making the two push blocks 36 on the two synchronous belts 28 contact with one end of the two sliders 35. The two synchronous belts 28 continue to rotate, so that the two push blocks 36 push the two sliders 35 along the two slide rails 34, so that the two clamping plates 3 move along the two telescopic longitudinal beams 27, and thus push the bamboo-wood board out of the two telescopic longitudinal beams 27, realizing the long-distance transportation of the bamboo-wood board.

[0039] As Figures 1 to 11As shown in the figure, for the surface application device of bamboo-wood board with a photocatalytic active material of the present invention, during operation, first, the driving mechanism 2 drives two clamping plates 3 to approach and clamp the bamboo-wood board. The particle tank unit 7 is filled with powder particles of the photocatalytic active material. Inside the particle tank unit 7, the photocatalytic active material particles are accelerated and output through the particle spray gun 8, so that the photocatalytic active material particles impact the surface of the bamboo-wood board at a high speed, creating micropores on the surface of the bamboo-wood board and making the surface of the bamboo-wood board rough, which is beneficial for the subsequent application of the liquefied photocatalytic active material. Then, adjust the speed and angle of the photocatalytic active material particles output by the particle spray gun 8, so that the photocatalytic active material particles are obliquely injected into the gaps between the bamboo fibers from the side, enabling some of the photocatalytic active material particles to be embedded in the surface of the bamboo-wood board. Then, the driving mechanism 2 drives the two mounting frames 4 to move longitudinally, and the sliding table mechanism 5 drives the workbench 6 to move horizontally to perform a comprehensive impact treatment on the surface of the bamboo-wood board. The excess photocatalytic active material particles that are not embedded in the surface of the bamboo-wood board are blown into the two collection grooves 29 of the two clamping plates 3 and then sucked into the two collection hoppers 31 through multiple through holes and two discharge ports 30 for collection. After the impact treatment is completed, the spraying assembly works to apply the solution or sol of the photocatalytic active material to the surface of the bamboo-wood board. After spraying is completed, the driving mechanism 2 conveys the two clamping plates 3 backward, and the two clamping plates 3 clamp the bamboo-wood board and convey it backward, and then the bamboo-wood board is subjected to high-temperature calcination and curing.

[0040] The main functions achieved by the present invention are:

[0041] 1. Roughly process the surface of the bamboo-wood board before coating to improve the firmness of the photocatalytic active material;

[0042] 2. Form a particle layer with multiple reflective surfaces inside the coating, presenting different flashing effects and improving the aesthetics;

[0043] 3. Have a multi-functional driving mechanism 2, which can drive the bamboo-wood board to move forward, backward, left, right, up and down, and can perform long-distance conveying;

[0044] 4. Through the front and back spraying of two solutions with different concentrations, achieve the electrostatic spraying effect on the bamboo-wood board and improve the spraying uniformity;

[0045] 5. Have an openable vacuum-sealed box body, so that the air in the bamboo-wood board can be quickly discharged, making it easier for the photocatalytic active material solution to fill the pores on the surface layer of the bamboo-wood board, and improving the spraying firmness and penetration depth.

[0046] The surface application device for bamboo and wood boards of a photocatalytic active material of the present invention has an installation method, a connection method, or a setting method that are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; the bottom plate 1, drive mechanism 2, clamping plate 3, sliding table mechanism 5, workbench 6, particle tank unit 7, particle spray gun 8, spray pot one 9, spray head one 10, spray pot two 11, spray head two 12, electrode one 13, electrode two 14, suction pipe one 16, push cylinder one 18, sol tank unit 19, brush roller 20, longitudinal beam 21, double-headed push cylinder 22, push cylinder two 24, synchronous pulley one 25, synchronous pulley two 26, telescopic longitudinal beam 27, synchronous belt 28, collection hopper 31, suction pipe two 32, slide rail 34, slider 35, magnetic attraction block one 37, magnetic attraction block two 38, magnetic attraction block three 39 of the surface application device for bamboo and wood boards of a photocatalytic active material of the present invention are purchased on the market, and technicians in this industry only need to install and operate according to the attached operation manual, without the need for technicians in this field to perform creative labor.

[0047] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A surface application device for bamboo and wood boards with photocatalytic activity material, comprising a bottom plate (1); characterized in that, It also includes a driving mechanism (2), two clamping plates (3), two mounting brackets (4), a sliding table mechanism (5), a workbench (6), a particle tank unit (7), a particle spray gun (8) and a spraying assembly. The driving mechanism (2) is mounted on the bottom plate (1). The two clamping plates (3) are oppositely mounted on the driving mechanism (2). The driving mechanism (2) drives the clamping plates (3) to relatively approach and clamp the bamboo and wood boards. The two mounting brackets (4) are oppositely mounted on the driving mechanism (2). The driving mechanism (2) drives the two mounting brackets (4) to move longitudinally. The sliding table mechanism (5) is mounted on the two mounting brackets (4). The sliding table mechanism (5) drives the workbench (6) to move horizontally. The particle tank unit (7) and the spraying assembly are mounted on the workbench (6). The interior of the particle tank unit (7) is filled with photocatalytic active material particles. The output end of the particle tank unit (7) is mounted with the particle spray gun (8). The spraying assembly is used to apply the liquefied photocatalytic active material to the bamboo and wood boards; The driving mechanism (2) includes two longitudinal beams (21), a double-headed push cylinder (22), four support arms (23), four second push cylinders (24), four first synchronous pulleys (25) and four second synchronous pulleys (26), two telescopic longitudinal beams (27) and two synchronous belts (28). The two longitudinal beams (21) are relatively slidably mounted on the bottom plate (1). The two longitudinal beams (21) move in the left-right direction. The double-headed push cylinder (22) is mounted on the bottom plate (1). The two piston rods of the double-headed push cylinder (22) are respectively connected to the two longitudinal beams (21). The first synchronous pulleys (25) are rotatably mounted at the front and rear ends of the two longitudinal beams (21). The lower ends of the four support arms (23) are respectively rotatably connected to the front and rear ends of the two longitudinal beams (21). The lower ends of the four second push cylinders (24) are respectively rotatably connected to the front and rear ends of the two longitudinal beams (21). The upper ends of the four second push cylinders (24) are respectively rotatably connected to the middle parts of the four support arms (23). The second synchronous pulleys (26) are rotatably mounted at the upper ends of the four support arms (23). The two telescopic longitudinal beams (27) are respectively located above the two longitudinal beams (21). The two ends of the two telescopic longitudinal beams (27) are respectively rotatably connected to the upper ends of the four support arms (23). The two synchronous belts (28) are respectively located above the two longitudinal beams (21). The two synchronous belts (28) are respectively sleeved on the two first synchronous pulleys (25) and the two second synchronous pulleys (26). Tensioning assemblies for the two synchronous belts (28) are respectively mounted on the two longitudinal beams (21). The two mounting brackets (4) are respectively mounted on the two synchronous belts (28) through connecting components. The two clamping plates (3) are respectively mounted on the two telescopic longitudinal beams (27).

2. The surface application device for bamboo-wood boards of a photocatalytic active material according to claim 1, wherein The spraying assembly includes a first spray pot (9) and a first spray head (10). The first spray pot (9) is mounted on the workbench (6). The interior of the first spray pot (9) stores the photocatalytic active material solution. The output end of the first spray pot (9) is mounted with the first spray head (10).

3. The surface application device for bamboo-wood boards of a photocatalytic active material according to claim 2, wherein, It further includes a second sprayer (11), a second spray head (12), a first electrode (13) and a second electrode (14). The second sprayer (11) is installed on the workbench (6). The inside of the second sprayer (11) stores a second photocatalytic active material solution. The second photocatalytic active material solution has electrical conductivity, and the concentration of the second photocatalytic active material solution is less than that of the photocatalytic active material solution stored inside the first sprayer (9). The output end of the second sprayer (11) is installed with the second spray head (12). The second spray head (12) is located in front of the first spray head (10). The first electrode (13) is installed on the first spray head (10), and the second electrode (14) is installed on the clamping plate (3).

4. The surface application device for bamboo-wood boards of a photocatalytic active material according to claim 2, characterized in that, It further includes two fixed end plates (15), a first suction pipe (16), two side plates (17) and a plurality of first push cylinders (18). The two sliding table mechanisms (5) are respectively installed at the front and rear ends of the bottom plate (1). The first suction pipe (16) is installed on the fixed end plate (15). One end of the first suction pipe (16) extends into the inner side of the fixed end plate (15). The cross-sections of the two side plates (17) are L-shaped. The lower parts of the two side plates (17) are vertical plates, and the upper parts of the two side plates (17) are flat plates. The lower edges of the vertical plates of the two side plates (17) are respectively rotatably connected to the left and right ends of the bottom plate (1). Wear-resistant sealing strips are arranged between the lower edges of the vertical plates of the two particle tank units (7) and the bottom plate (1). One ends of the plurality of first push cylinders (18) are rotatably connected to the bottom plate (1), and the other ends of the plurality of first push cylinders (18) are respectively rotatably connected to the two side plates (17). The plurality of first push cylinders (18) drive the vertical plates of the two side plates (17) to be laid flat or erected. After the vertical plates of the two side plates (17) are erected, the vertical plates of the two side plates (17) enclose the space between the left and right ends of the two fixed end plates (15). The flat plates of the two side plates (17) cooperate to enclose the space above the two fixed end plates (15). Wear-resistant sealing strips are arranged between the two side plates (17) and the fixed end plates (15), and wear-resistant sealing strips are arranged between the opposite sides of the two side plates (17).

5. The surface application device for bamboo-wood board of a photocatalytic active material as claimed in claim 1, characterized in that, The spraying mechanism includes a sol tank unit (19) and a brush roller (20). The sol tank unit (19) is installed on the workbench (6) in a liftable manner. The inside of the sol tank unit (19) stores a photocatalytic active material sol. The brush roller (20) is rotatably installed at the lower part of the sol tank unit (19), and the upper part of the brush roller (20) is in contact with the photocatalytic active material sol stored inside the sol tank unit (19).

6. The surface application device for bamboo-wood boards of a photocatalytic active material as described in claim 1, characterized in that, It further includes two collection troughs (29), two discharge openings (30), two collection hoppers (31) and two second suction pipes (32). Two clamping plates (3) are respectively installed on two telescopic longitudinal beams (27). The lower end surfaces of two synchronous belts (28) are in frictional contact with the lower end surfaces of two clamping plates (3). Collection troughs (29) are arranged on the upper parts of two clamping plates (3). A plurality of through holes are linearly arranged at the bottoms of two collection troughs (29). Discharge openings (30) are arranged on two synchronous belts (28). Two discharge openings (30) are located below two collection troughs (29). Two collection hoppers (31) are respectively installed on the lower surfaces of two synchronous belts (28). The upper openings of two collection hoppers (31) are respectively communicated with two discharge openings (30). Second suction pipes (32) are installed on two collection hoppers (31). Two second suction pipes (32) are communicated with the interiors of two collection hoppers (31).

7. The surface application device for bamboo and wood boards of a photocatalytic active material according to claim 6, characterized in that, It further includes two vertical partition plates (33). Two vertical partition plates (33) are respectively vertically installed in two collection hoppers (31). The upper edges of two vertical partition plates (33) are respectively connected with the top walls of two collection hoppers (31). Gaps are provided between the lower edges of two vertical partition plates (33) and the bottoms of two collection hoppers (31). Two vertical partition plates (33) are respectively located inside the upper openings of two collection hoppers (31). Two second suction pipes (32) are respectively located above the insides of two collection hoppers (31). Two second suction pipes (32) are respectively higher than the lower edges of two vertical partition plates (33).

8. The surface application device for bamboo-wood boards of a photocatalytic active material as described in claim 6, characterized in that, It further includes two slide rails (34), two sliders (35) and four push blocks (36). Slide rails (34) are installed on two telescopic longitudinal beams (27). Sliders (35) are installed in the middle parts of two clamping plates (3). Two clamping plates (3) are respectively slidably installed in two second push cylinders (24) through two sliders (35). Two push blocks (36) are installed on two synchronous belts (28). Two push blocks (36) are respectively located on the front and rear sides of two clamping plates (3). Four push blocks (36) are respectively aligned with the two ends of two sliders (35).

9. The surface application device for bamboo and wood boards of a photocatalytic active material according to claim 6, characterized in that It further includes four first magnetic attraction blocks (37), four second magnetic attraction blocks (38) and four third magnetic attraction blocks (39). First magnetic attraction blocks (37) are installed at the front and rear ends of two collection hoppers (31). Two second magnetic attraction blocks (38) are installed on two synchronous belts (28). Two second magnetic attraction blocks (38) are respectively located on the front and rear sides of two discharge openings (30). Four second magnetic attraction blocks (38) are respectively used for attracting four first magnetic attraction blocks (37). Third magnetic attraction blocks (39) are installed at the two ends of two telescopic longitudinal beams (27). Four third magnetic attraction blocks (39) are respectively used for attracting four first magnetic attraction blocks (37).

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