Spraying device and spraying method for anti-corrosion and heat-insulation coating of plate

Abstract

The invention discloses a spraying device and a spraying method for an anti-corrosion and heat-insulation coating of a plate. Comprising a first feeding port and a first discharging port, and a plurality of first spraying heads used for spraying anti-corrosion heat-insulation paint are fixed in the first spraying chamber; the second spraying chamber comprises a second feeding port and a second discharging port, a liftable shielding unit is arranged in the second spraying chamber, and a plurality of second spraying heads used for spraying the anti-corrosion heat-insulation coating are rotationally arranged on the shielding unit; one end of the conveying unit is exposed out of the left side of the first spraying chamber, and the other end extends to the right side of the second spraying chamber. The spraying effect of the bent part of the plate can be ensured to be the same as that of other parts, so that the overall environment application range of the plate is determined more accurately, the overall corrosion prevention and heat insulation grade of the plate is unified, and the situation that the bent part of the plate cannot meet the requirement in the use environment of the non-bent part grade of the plate is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-corrosion and heat-insulating materials, and in particular to a spraying device and a spraying method for an anti-corrosion and heat-insulating coating on a board. Background Art

[0002] With the development of industry, the demand for anti-corrosion and heat-insulating materials is increasing day by day. Traditional anti-corrosion and heat-insulating materials have many deficiencies in performance, such as poor heat-insulating effect, poor anti-corrosion performance, short service life, etc. Therefore, it is necessary to spray an anti-corrosion and heat-insulating coating on the board.

[0003] The outer surfaces of the boards used in common houses such as outdoor tool rooms and sun rooms are usually uneven and have bent parts. The horizontal height of the surface of the bent part is different from that of the non-bent part. For example, Figure 2 As shown, and the outer surface of the board usually needs to be sprayed completely at one time during spraying. Therefore, during spraying, the spraying effect of the bent part of the board is usually relatively poor compared with that of the non-bent part, and the anti-corrosion and heat-insulating effect of the bent part is relatively lower. For this reason, the applicant proposes this application. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides a spraying device and a spraying method for an anti-corrosion and heat-insulating coating on a board, which can ensure that the spraying effect of the bent part of the board is the same as that of the other parts, so as to improve the service life of the board.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: A spraying device for an anti-corrosion and heat-insulating coating on a board, comprising A first spraying chamber, the first spraying chamber includes a first feed port and a first discharge port, and a plurality of first nozzles with liquid spraying ports facing downwards for spraying anti-corrosion and heat-insulating coatings are fixed therein; A second spraying chamber, the second spraying chamber includes a second feed port and a second discharge port, and a liftable shielding unit is arranged therein. A plurality of second nozzles with liquid spraying ports facing downwards for spraying anti-corrosion and heat-insulating coatings are rotatably arranged on the shielding unit, and the distance between adjacent second nozzles matches the distance between adjacent bent parts on the board; and A conveying unit, one end of which is exposed outside the left side of the first spraying chamber, and the other end extends to the right side of the second spraying chamber through the first feed port, the first discharge port, the second feed port and the second discharge port.

[0006] In the above technical solution, preferably, the conveying unit includes a support body and a conveyor belt arranged on the support body, and the conveyor belt is controlled by a motor installed on the support body to move in a cycle.

[0007] In the above technical solution, preferably, the shielding unit includes a number of flexible parts for installing the second nozzle, the liquid spraying port of the second nozzle is exposed outside the flexible parts, and the horizontal height of the lower edge of the parts on the left and right sides of the liquid spraying port of the flexible parts is lower than the horizontal height of the liquid spraying port.

[0008] In the above technical solution, preferably, the upper end of the second nozzle is rotatably arranged on the mounting bracket of the shielding unit and is controlled by the driving unit to swing left and right for spraying.

[0009] In the above technical solution, preferably, a lifting unit connected to the mounting bracket is arranged on the shielding unit to control the lifting of the mounting bracket. The second nozzle synchronously lifts and lowers accordingly, and the flexible parts are deformed accordingly.

[0010] In the above technical solution, preferably, a number of sensors are arranged in the first spraying chamber. When the sensors sense that the board is in place, the first nozzle is controlled by the control unit electrically connected thereto to perform the spraying operation.

[0011] In the above technical solution, preferably, a number of sensors are arranged in the second spraying chamber. When the sensors sense that the board is in place, the second nozzle is controlled by the control unit electrically connected thereto to perform the spraying operation.

[0012] In the above technical solution, preferably, a third spraying chamber is further included, and the third spraying chamber includes a number of third nozzles for spraying paint.

[0013] A spraying method for an anti-corrosion and heat-insulating coating of a board, which uses the above spraying device, includes the following steps: S1. Place the board on the conveying unit and drive the board into the first spraying chamber through the conveying unit; S2. The sensors in the first spraying chamber sense that the board is in place, and the first nozzle starts to spray the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit always drives the board towards the second spraying chamber; S3. After the board is driven into the second spraying chamber by the conveyor belt and is in place, the second nozzle starts to spray the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit stops running. After the second nozzle sprays one stroke unit, it stops spraying; S4. The conveying unit takes the sprayed board out of the second spraying chamber, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating.

[0014] In the above technical solution, preferably, in step S4, the conveying unit takes the sprayed board into the third spraying chamber, sprays paint and then takes it out of the third spraying chamber, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating; The preparation method of the anti-corrosion and heat-insulating coating includes the following steps: S1. Add all pigments and fillers to deionized water, gradually increase the stirring speed until it reaches 1300 revolutions per minute, stir for 40 minutes, and add 60% of the additives to obtain a uniformly dispersed mixture; S2. Add the film-forming resin and graphene to the mixture in sequence and stir for 30 minutes; S3. Reduce the stirring rate to 800 revolutions per minute, add the remaining 40% of the additives and barium sulfate, and continue to stir for 30 minutes to obtain a uniform coating; S4. Add the composite microspheres to the coating and continue to stir until the composite microspheres are uniformly dispersed in the coating; S5. Subject the stirred coating to vacuum treatment to remove air bubbles and improve the density and heat insulation performance of the coating.

[0015] The beneficial effects of the present invention are as follows: The present invention can ensure that the spraying effect at the bent part of the plate is the same as that of the other parts, more accurately determine the overall environmental application range of the plate, unify the overall anti-corrosion and heat insulation grades of the plate, and avoid the situation where the bent part of the plate fails to meet the requirements in the usage environment with the grade of the non-bent part of the applicable plate.

[0016] The anti-corrosion and heat insulation material of the present invention combines the advantages of graphene, composite microspheres and barium sulfate, and has excellent anti-corrosion performance and heat insulation performance.

[0017] The anti-corrosion and heat insulation material of the present invention is applicable to various metal and non-metal surfaces, such as plates, industrial equipment, storage tanks, pipelines, buildings, etc., and has broad application prospects. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the spraying device of the present invention.

[0019] Figure 2 It is a schematic diagram of the plate.

[0020] Figure 3 It is a schematic diagram of the spraying direction of the first nozzle in the first spraying chamber of the present invention and the moving direction of the plate.

[0021] Figure 4 It is a schematic diagram of the bent part of the plate of the present invention.

[0022] Figure 5 It is a schematic diagram of the movement track of the second nozzle above the bent part of the plate of the present invention.

[0023] Figure 6 It is a schematic diagram of the spraying direction of the second nozzle in the second spraying chamber of the present invention. Detailed Embodiments

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: Embodiment 1:

[0025] See Figures 1-6 As shown, a spraying device for an anti-corrosion and heat-insulating coating of a sheet material includes a first spraying chamber 1, a second spraying chamber 2, and a conveying unit 3.

[0026] For the first spraying chamber 1, it includes a first feed port opened on its left side wall and a first discharge port opened on its right side wall. At the same time, the inside of the first spraying chamber 1 is hollow, and a number of first nozzles with the liquid spraying ports facing downwards for spraying the anti-corrosion and heat-insulating coating are fixedly installed inside.

[0027] In this embodiment, a sensor is provided at a position of the first spraying chamber 1 near the first discharge port. The sensor is electrically connected to the first nozzles. After the sensor senses that the sheet material 9 is in place, the first nozzles start the spraying action. During this process, the conveying unit 3 always runs without stopping, and the first nozzles stop the spraying action after the sensor senses that the sheet material 9 has left. For the spraying direction of the first nozzles, reference can be made to Figure 3 as shown at position A in Figure 3 and for the corresponding movement direction of the sheet material, reference can be made to

[0028] as shown at position B in . For the electrical connection mode between the sensor and the first nozzles, whether there is also a controller for controlling the start and stop of the first nozzles, the model of the first nozzles, etc., reference can be made to the existing designs.

[0029] As one of the implementation manners, the positions of the first feed port, the first discharge port, the second feed port, and the second discharge port correspond to each other. Of course, the opening sizes can also be the same.

[0030] The inside of the second spraying chamber 2 is hollow, and a liftable shielding unit 4 is provided therein. The shielding unit 4 is arranged horizontally, and its orthographic projection area can cover the entire upper surface of the sheet material 9. For the lifting of the shielding unit 4, as one of the implementation manners, a cylinder, an oil cylinder, an electric cylinder, etc. can be provided in the second spraying chamber 2 for controlling its lifting. Of course, the lifting member for controlling the shielding unit 4 can also be controlled by a controller, and the controller is electrically connected to a control button, a control handle, or a control computer.

[0031] For the shielding unit 4, it includes a number of flexible parts 41. A corresponding second spray head 21 is installed on each flexible part 41. The liquid spraying orifice of the second spray head 21 is arranged downward for spraying anti-corrosion and heat-insulating coatings. The distance between adjacent second spray heads 21 matches the distance between adjacent bent parts 91 on the plate 9, as Figure 6 shown.

[0032] In this embodiment, the liquid spraying orifice of the second spray head 21 is exposed outside the flexible part 41, and the horizontal height of the lower edges of the parts on the left and right sides of the flexible part 41 where the liquid spraying orifice is located is lower than the horizontal height of the liquid spraying orifice. When the second spray head 21 swings for spraying, the flexible parts lower than the liquid spraying orifice can play a role in shielding the coating, ensuring that when spraying the bent part, the coating will not be sprayed onto the non-bent part again, so as to improve the consistency of the coatings sprayed on the overall outer surface of the plate, more accurately determine the overall environmental application range of the plate, and unify the anti-corrosion and heat-insulating grades of the overall plate. It should be noted that if a baffle structure is used to abut against the outer surface of the plate, the coating at the position on the outer surface of the plate where it is abutted will be damaged, affecting the consistency of the coatings sprayed on the overall outer surface of the plate.

[0033] In this embodiment, except for the flexible parts 41, the rest of the shielding unit 4 is made of hard materials, such as iron parts, aluminum parts, etc.

[0034] The upper end of the second spray head 21 is rotatably arranged on the mounting bracket 22 of the shielding unit 4. The mounting bracket 22 can be specifically installed on the hard material of the shielding unit 4. The second spray head 21 is controlled by a driving unit to swing left and right for spraying. The driving unit can be installed on the mounting bracket 22. The driving unit can be a motor. The swinging range of the second spray head can be controlled by a sensor or a controller. For details, reference can be made to the existing design. The swinging action of the second spray head 21 can be referred to Figure 5 shown. The setting position of the second spray head can be referred to Figure 6 as shown at C in

[0035] Furthermore, a lifting unit connected to the mounting bracket 22 is arranged on the shielding unit 4 to control the lifting of the mounting bracket. For example, the mounting bracket 22 together with the second spray head 21 is integrally installed on the liftable component of the lifting unit. At the same time, the flexible part of the shielding unit 4 is connected to the outer wall of the second spray head. The second spray head rises and falls synchronously with the lifting of the mounting bracket. At the same time, the flexible part 41 deforms accordingly when the second spray head rises and falls, so as to control the convex degree of the flexible parts on both sides of the second spray head according to the distance between the second spray head and the outer surface of the bent part. The greater the convex degree, the larger the area shielding the left and right sides of the second spray head.

[0036] For the lifting unit, it can be arranged on the shielding unit 4. The specific structure can refer to the existing design, such as air cylinders, oil cylinders, electric cylinders, etc., or other structures that can be used for liftable components.

[0037] A plurality of sensors are arranged in the second spraying chamber. After the sensors sense that the board is in place, the second spray head is controlled by a control unit electrically connected thereto to perform a spraying operation.

[0038] For the conveying unit 3, as Figure 1 shown, one end of it is exposed outside the left side of the first spraying chamber 1, and the other end extends to the right side of the second spraying chamber 2 via the first feed port, the first discharge port, the second feed port and the second discharge port. The conveying unit 3 includes a bracket body 31 and a conveyor belt 32 arranged on the bracket body 31. The conveyor belt 32 is controlled by a motor installed on the bracket body 31 to move in a cycle.

[0039] The conveying unit 3 is used for transporting the board. The width of the conveyor belt 32 is greater than the width of the board 9. For the specific structure of the conveying unit, reference can be made to the conveyor belt-related structures in the existing design, including the transmission cooperation between the motor and the driving roller, and the conveyor belt is wound around the driving roller, the driven roller, etc.

[0040] A spraying method for an anti-corrosion and heat-insulating coating of a board, which uses the above-mentioned spraying device, includes the following steps: S1. Place the board on the conveying unit and drive the board into the first spraying chamber through the conveying unit; S2. The sensors in the first spraying chamber sense that the board is in place, and the first spray head starts to spray the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit always drives the board towards the second spraying chamber; S3. After the board is driven into the second spraying chamber by the conveyor belt and is in place, the second spray head starts to spray the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit stops operating. After the second spray head sprays a stroke unit, it stops spraying; S4. The conveying unit takes the sprayed board out of the second spraying chamber, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating.

[0041] In this embodiment, the second board to be processed can enter the first spraying chamber for spraying operation after the first board is sprayed in the second spraying chamber.

[0042] For the anti-corrosion and heat-insulating material, by weight, it includes the following components: 0.1 - 4 parts of graphene, 5 - 15 parts of composite microspheres, 10 - 30 parts of barium sulfate, 10 - 30 parts of film-forming resin, 18 - 45 parts of pigment filler, 1 - 8 parts of auxiliary agent, and 20 - 50 parts of deionized water.

[0043] Among them, the composite microspheres are a mixture of expandable microspheres and hollow glass microspheres. The average particle size of the expandable microspheres is 15 - 40 μm, and the density is 0.01 - 0.5 g / cm³; the average particle size of the hollow glass microspheres is 15 - 75 μm, and the density is 0.15 - 0.3 g / cm³.

[0044] Among them, the fineness of barium sulfate is 1000 - 4000 mesh.

[0045] Among them, the film-forming resin is an organosilicon-modified acrylic emulsion, the solid content of the emulsion is 48 ± 3%, and the glass transition temperature is 24 - 28 °C.

[0046] Among them, the pigment and filler are a mixture of two or more of rutile titanium dioxide, phthalocyanine blue, iron oxide yellow, cinnabar, realgar, fumed silica, heavy calcium carbonate, rare earth metal oxides, bentonite, talc powder, and barium sulfate.

[0047] Among them, the additives are one or more of a wetting agent, a dispersant, an antifoaming agent, a preservative, a film-forming agent, a thickening agent, a leveling agent, and a preservative.

[0048] A method for preparing an anti-corrosion and heat-insulating material, comprising the following steps: S1. Add all the pigment and filler into deionized water, gradually increase the stirring speed until 1300 revolutions per minute, stir for 40 minutes, and add 60% of the additives to obtain a uniformly dispersed mixture. S2. Add the film-forming resin and graphene into the mixture in sequence, and stir for 30 minutes. S3. Reduce the stirring rate to 800 revolutions per minute, add the remaining 40% of the additives and barium sulfate, and continue to stir for 30 minutes to obtain a uniform coating. S4. Add the composite microspheres into the coating, and continue to stir until the composite microspheres are uniformly dispersed in the coating. S5. Conduct vacuum treatment on the stirred coating to remove air bubbles and improve the density and heat-insulating performance of the coating. S6. Spray or brush the treated coating, and wait for it to dry naturally or by heating to form an anti-corrosion and heat-insulating coating.

[0049] As one of the implementation modes, in step S2, nano-porous silica aerogel is added before adding the film-forming resin. Among them, the nano-porous silica aerogel can be part of the composite microspheres or added separately to enhance the heat-insulating effect. When added in step S2, it is in the form of separate addition, and when it is part of the composite microspheres, it is added together with the composite microspheres in step S4.

[0050] As one of the implementation modes, in step S2, after adding graphene, carbon nanotubes are continued to be added.

[0051] The anti-corrosion and heat-insulating material is applied to a board as an anti-corrosion and heat-insulating layer. For example, in step S6, the coating is sprayed or brushed onto the board, and the board can be a board for outdoor houses, such as the board of a sunroom, a tool room, etc.

[0052] Example 2:

[0053] Compared with Embodiment 1, this embodiment is different in that it further has a third spraying chamber, and the rest are the same.

[0054] See Figures 1-6 As shown, it further includes a third spraying chamber 5. The third spraying chamber 5 is located on the right side of the second spraying chamber 2. It also includes a feed port and a discharge port. The conveying unit 3 also passes through the third spraying chamber 5, and a number of third spray heads for spraying paint are arranged in the third spraying chamber 5.

[0055] A layer of paint is further sprayed on the anti-corrosion and heat-insulating layer in the third spraying chamber 5. The type of paint can be adaptively selected according to the applicable range of the board.

[0056] After designing the third spraying chamber 5, step S4 in the spraying method needs to be adaptively modified. The modified spraying method steps are as follows: S1. Place the board on the conveying unit and drive the board into the first spraying chamber through the conveying unit; S2. The sensor in the first spraying chamber senses that the board is in place, and the first spray head starts spraying the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit always drives the board towards the second spraying chamber; S3. After the board is driven into the second spraying chamber by the conveyor belt and is in place, the second spray head starts spraying the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit stops running. After the second spray head sprays a stroke unit, it stops spraying; S4. The conveying unit takes the sprayed board into the third spraying chamber, sprays paint and then takes it out of the third spraying chamber, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spraying device for anti-corrosion and heat-insulating coating of plate, characterized by: include A first spraying chamber, wherein the first spraying chamber comprises a first feed inlet and a first discharge outlet, and a plurality of first spray heads with downward spraying ports for spraying anti-corrosion and heat-insulating coatings are fixed therein; A second spraying room, wherein the second spraying room comprises a second material inlet and a second material outlet, and a liftable shielding unit is arranged therein, and a plurality of second spraying heads with downward spraying ports for spraying anti-corrosion and heat-insulating coatings are rotatably arranged on the shielding unit, and the spacing between adjacent second spraying heads matches the spacing between adjacent bending parts on the plate; as well as A conveying unit has one end exposed at the left side of the first spraying chamber, and the other end extending to the right side of the second spraying chamber through the first feed port, the first discharge port, the second feed port and the second discharge port.

2. The spraying device for the plate anticorrosion and heat insulation coating according to claim 1 is characterized in that: The conveying unit comprises a support body and a conveyor belt arranged on the support body. The conveyor belt is controlled by a motor installed on the support body to move in a circular motion.

3. A spraying device for a plate anticorrosion and heat insulation coating according to claim 1 or 2, characterized in that: The shielding unit includes a plurality of flexible parts for mounting the second nozzle, the liquid spraying port of the second nozzle is exposed at the flexible parts, and the horizontal height of the lower edge of the flexible parts located on the left and right sides of the liquid spraying port is lower than the horizontal height of the liquid spraying port.

4. The spraying device for the plate anticorrosion and heat insulation coating according to claim 3 is characterized in that: The upper end of the second spray head is rotatably disposed on the mounting bracket of the shielding unit, and is controlled by a driving unit to swing left and right for spraying.

5. The spraying device for the plate anticorrosion and heat insulation coating according to claim 4 is characterized in that: The shielding unit is provided with a lifting unit connected with the mounting bracket to control the lifting of the mounting bracket, and the second nozzle is lifted and lowered synchronously therewith, and the flexible portion is deformed accordingly.

6. The spraying device for anticorrosion and heat insulation coating of a plate material according to claim 1, characterized in that: A plurality of sensors are arranged in the first spraying chamber. When the sensors sense that the plate is in place, a control unit electrically connected to the sensors controls the spraying operation of the first spray head.

7. A spraying device for a plate anticorrosion and heat insulation coating according to claim 1 or 6, characterized in that: A plurality of sensors are arranged in the second spraying chamber. When the sensors sense that the plate is in place, a control unit electrically connected to the sensors controls the spraying operation of the second spray head.

8. The spraying device for anticorrosion and heat insulation coating of a plate material according to claim 1, characterized in that: It also includes a third spraying room, which includes a plurality of third spray heads for spraying paint.

9. A method for spraying a plate anticorrosion and heat insulation coating, characterized in that: It uses a spraying device as described in any one of claims 1 to 8, comprising the following steps: S1, placing the plate on the conveying unit, and driving the plate into the first spraying chamber through the conveying unit; S2. The sensor in the first spraying room senses that the plate is in place, and the first spray head starts spraying the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit always drives the plate to move toward the second spraying room; S3. After the plate is driven by the conveyor belt to the second spraying room and in place, the second spray head starts to spray the anti-corrosion and heat-insulating coating. During the spraying process, the conveying unit stops running, and the second spray head stops spraying after spraying one stroke unit; S4. The conveying unit takes the sprayed plate out of the second spraying room, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating.

10. The method for spraying a plate anticorrosion and heat insulation coating according to claim 9, characterized in that: In step S4, the conveying unit brings the sprayed plate into the third spraying room, sprays the paint, and then brings it out of the third spraying room, and then dries it naturally or by heating to form an anti-corrosion and heat-insulating coating; The preparation method of the anticorrosion and heat-insulating coating comprises the following steps: S1. Add all pigments and fillers into deionized water, gradually increase the stirring speed to 1300 rpm, stir for 40 minutes, add 60% of additives to obtain a uniformly dispersed mixture; S2, adding film-forming resin and graphene to the mixed solution in sequence, and stirring for 30 minutes; S3, reduce the stirring rate to 800 rpm, add the remaining 40% of the additive and barium sulfate, and continue stirring for 30 minutes to obtain a uniform coating; S4, adding the composite microspheres into the coating, and continuing to stir until the composite microspheres are evenly dispersed in the coating; S5. The stirred paint is vacuum treated to remove bubbles and improve the density and heat insulation performance of the paint.

Images