An efficient applicator-type scraper, coating construction process and blade

Abstract

The present invention discloses an efficient applicator-type scraper, a coating construction process, and a blade. The applicator-type scraper comprises a flexible scraper body, the operating surface of which is provided with a first protrusion assembly and a plurality of second protrusion assemblies, the plurality of second protrusion assemblies being distributed on either side of the first protrusion assembly, and the first protrusion assembly being taller than the second protrusion assemblies. The scraper solution provided by the present invention innovatively adopts a sparse (variable) arrangement to effectively control the thickness of the protective paint coating at different locations, and can control the angle with the leading edge surface of the blade to remain almost constant, achieving a good fit during operation without requiring too many support points, leaving no scratches, and conforming to the shape of the blade. This effectively creates a leading edge protective paint effect where the coating is thickest at the mold seam and thinner on both sides.

Description

Technical Field

[0001] The invention relates to a coating technology, and in particular to a coating protection technology for the leading edge of a wind power generation blade. Background Art

[0002] During the operation of wind turbine blades, the leading edges will be severely damaged after being subjected to strong impact from rain. This will not only damage the structure of the blade itself, but also cause the surface of the leading edge of the blade to become rough, increase the operating resistance, and seriously reduce the power generation efficiency. Therefore, most blade leading edges are now coated with a special blade leading edge protective coating.

[0003] Leading-edge paint can theoretically provide effective protection for blade leading edges for 5-20 years or even longer, but in practice this often falls short. Besides the paint's inherent imperfect protective properties, poor application quality is also a significant contributing factor. Therefore, improving the quality of blade leading-edge paint is crucial.

[0004] Currently, the most common construction methods are spraying and scraping. Among them, the spraying process has not been widely used due to its slow efficiency, high requirements and high cost.

[0005] For conventional scraping technology, the leading edge protective paint generally has a high viscosity and is difficult to operate. At the same time, the blade substrate is curved and the curvature is constantly changing, making construction difficult.

[0006] Furthermore, in the existing scraping process, a scraper is generally used, and there are two common types of existing scrapers. One type has a straight line leading edge without any serrated protrusions; the second type has a straight line leading edge with many serrated protrusions evenly and densely distributed on the leading edge where the front section contacts the blade. These serrations play a certain role in controlling the thickness of the paint film.

[0007] When applying these two types of scrapers, a standard non-serrated scraper is typically bent by hand to fit the blade, leaving the leading edge suspended in the air, and the paint is simply scraped onto the substrate. This method of application makes it nearly impossible to control the film thickness, nor can it guarantee a minimum film thickness (the scraper can easily come into direct contact with the substrate). This simply results in the leading edge protective paint being applied to the blade without any other effects.

[0008] The specific application method for densely serrated scrapers is roughly the same as that for ordinary non-serrated scrapers. However, due to the serrated protrusions, even if the blade is pressed against the blade with force, a certain thickness can be achieved, but it is far from meeting the thickness requirements of the leading edge protective paint. Moreover, due to the excessive number of serrations, there will be too many scratches and the surface will not level, resulting in an unqualified appearance. The angle between the scraper and the leading edge of the blade is also uncontrollable due to manual deviation, resulting in uneven thickness of the paint film. It also cannot meet the special molding effect of the leading edge protective paint.

[0009] In view of this, the following defects are generally present when applying leading edge protective paint to wind turbine blades based on scrapers:

[0010] 1) The angle of the scraper during construction (i.e., the angle between the scraper surface and the blade substrate) is manually controlled and cannot completely fit the blade surface. As a result, the thickness of the paint film formed on the leading edge of the wind turbine blade is difficult to control and the required film thickness cannot be accurately achieved;

[0011] 2) The dense serrations of the current scraper cause serious scratches on the paint film surface;

[0012] 3) Due to the special structure and construction performance requirements of wind turbine blades, the scraper coating needs to be controlled to be thick in the middle and thin on both sides. The currently used scraper is difficult to achieve this characteristic requirement when applying high-viscosity products.

[0013] It can be seen that the existing scraping scheme has the problem of difficult to control film thickness, low construction efficiency, and the formation of heavy scratches, which will greatly affect the effect of blade leading edge protective paint coating and the performance of the blade leading edge protective paint film formed. Summary of the Invention

[0014] In view of the problems existing in the existing blade leading edge protective paint scraping solution, an efficient and easy-to-use blade leading edge protective paint scraping solution is needed.

[0015] To this end, the purpose of the present invention is to provide an efficient applicator-type scraper, and based on the scraper, provide an efficient coating construction process, and provide a blade formed based on the process. This scheme can realize efficient scraping of the protective paint on the leading edge of the blade and effectively control the thickness to meet the construction requirements that the protective paint on the leading edge of the blade is thickest at the mold seam and thin on both sides.

[0016] In order to achieve the above-mentioned purpose, the applicator-type scraper provided by the present invention includes a flexible scraper body, and a first protrusion component and a plurality of second protrusion components are provided on the operating surface of the scraper body. The plurality of second protrusion components are distributed on both sides of the first protrusion component, and the height of the first protrusion component is greater than that of the second protrusion component.

[0017] Furthermore, the first protrusion components can be distributed in the middle or at the edges of both sides of the operating surface of the scraper body.

[0018] Furthermore, the extending direction of the first protrusion assembly is the same as the operating direction of the scraper body.

[0019] Furthermore, the length of the first protrusion assembly is 1 / 5 to 4 / 5 of the width of the operating surface of the scraper body.

[0020] Furthermore, the width of the first protrusion component is 0.1-3 cm.

[0021] Furthermore, the thickness of the first protrusion component is 0.1-0.3 cm.

[0022] Furthermore, the first protrusion assembly is composed of at least one first protrusion unit.

[0023] Furthermore, the first protrusion unit is in the shape of a strip, a convex point, a strip formed by arranging a plurality of convex points, or a roller.

[0024] Furthermore, the top of the first protrusion unit is in an arc shape or a hemispherical shape.

[0025] Furthermore, the second protrusion components can be distributed in the middle or at the edges of both sides of the operating surface of the scraper body.

[0026] Furthermore, the extending direction of the second protrusion assembly is the same as the operating direction of the scraper body.

[0027] Furthermore, the length of the second protrusion assembly is 1 / 5 to 4 / 5 of the width of the operating surface of the scraper body.

[0028] Furthermore, the width of the second protrusion component is 0.1-3 cm.

[0029] Furthermore, the thickness of the second protrusion component is 0-0.15 cm.

[0030] Furthermore, the second protrusion assembly is composed of at least one second protrusion unit.

[0031] Furthermore, the second protrusion unit is in the shape of a strip, a convex point, a strip formed by arranging a plurality of convex points, or a roller.

[0032] Furthermore, the top of the second protrusion component is in an arc shape or a hemispherical shape.

[0033] Furthermore, operating handle assemblies are provided at both ends of the scraper body.

[0034] Furthermore, the first protrusion assembly and / or the second protrusion assembly is fixedly mounted on the operating surface of the scraper body or is replaceably mounted on the operating surface of the scraper body.

[0035] In order to achieve the above-mentioned object, the present invention provides an efficient coating construction process, which includes:

[0036] Bend the applicator scraper and fit it directly and tightly on the blade substrate, align the first protrusion component on the applicator scraper with the die seam of the blade substrate, and make the second protrusion components on both sides of the first protrusion component on the applicator scraper fit the diffusion areas on both sides of the die seam of the blade substrate;

[0037] Drag the scraper directly so that it covers the mold seam of the blade and the diffusion areas on both sides, and moves along the surface of the blade substrate;

[0038] When the scraper passes over the protective paint on the surface area of ​​the blade substrate, pressing pressure can be applied from both sides, and a driving force can be applied along the direction of the mold seam to ensure that the scraper is always closely attached to the blade substrate, completing the coating of the protective paint on the surface of the blade substrate in a surface contact manner.

[0039] Furthermore, when the applicator-type scraper is attached to the blade substrate, the first protrusion component on the scraper corresponds to the blade substrate's mold seam, and the first protrusion component supports and forms the thickest forming space between the blade substrate's mold seam and the scraper operating surface. Based on the cooperation between the forming space and the scraper operating surface, the paint at the blade substrate's mold seam is completely formed at the blade substrate's mold seam according to the thickness of the forming space.

[0040] At the same time, several second protrusion components on both sides of the first protrusion component on the scraper correspond to the diffusion areas on both sides of the blade substrate mold seam, and support the formation of thinner side molding spaces between the diffusion areas on both sides of the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the side molding space and the scraper operating surface, the paint in the diffusion areas on both sides of the blade substrate mold seam is completely formed on the diffusion areas on both sides of the blade substrate mold seam according to the thickness of the molding space.

[0041] In order to achieve the above-mentioned object, the present invention provides a wind turbine blade, wherein the leading edge of the wind turbine blade is directly coated with leading edge protective paint by the scraper.

[0042] Furthermore, the thickness of the leading edge protective paint formed by the first protrusion component in the applicator-type scraper at the middle mold seam of the leading edge of the wind turbine blade is greater than the thickness of the leading edge protective paint formed by the second protrusion component in the applicator-type scraper in the diffusion area on both sides of the mold seam.

[0043] The scraper solution provided by the present invention innovatively adopts a sparse (variable) setting scheme to achieve effective control of the thickness of the protective paint coating on different parts, and can control the angle with the leading edge surface of the blade to remain almost unchanged. It fits well during operation, does not require too many support points, has no scratches, and fits the shape of the blade; it can effectively form a leading edge protective paint effect that is thickest at the mold seam and thin on both sides.

[0044] In this solution, the protrusions on the operating surface of the scraper body are mainly distributed with the thickest in the middle and gradually decreasing towards both sides to meet the paint film thickness requirements. In addition, the distribution position of the protrusions can be changed at will and can be made detachable, which is highly practical.

[0045] The scraper provided by the present invention does not require any operating experience during specific application, is easy to operate, can ensure a scraping effect, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0047] Figure 1 Schematic diagram of the structure of an efficient applicator-type scraper in an example of the present invention;

[0048] Figure 2 Schematic diagram of the structure of the protrusion on the scraper in an example of the present invention. DETAILED DESCRIPTION

[0049] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0050] Due to the special structure and construction performance requirements of wind turbine blades, the thickness of the protective paint on the leading edge needs to be controlled to be thick in the middle and thin on both sides when scraping, that is, the thickest at the mold seam and thin on both sides. Since the curvature of the mold seam at the leading edge of the blade is different, the largest at the tip of the blade, the scraper currently used is difficult to meet this characteristic requirement when constructing high-viscosity products.

[0051] This example presents a coating scraper. This innovative scraper utilizes a sparse (variable) configuration to effectively control the coating thickness of the protective paint at different locations. It also maintains a nearly constant angle with the leading edge of the blade, ensuring a smooth, scratch-free application without requiring numerous support points. It effectively creates a leading edge protective paint effect where the coating is thickest at the die seam and thinner on either side.

[0052] See also Figure 1 and Figure 2 , which shows a structural example diagram of the efficient coater-type scraper 100 in this embodiment. As can be seen from the figure, the efficient coater-type scraper 100 mainly includes a long strip-shaped flexible scraper body 110.

[0053] The scraper body in this example serves as the main operating body for scraping and coating. Its material is relatively soft and deformable, and its shape is preferably long and narrow. It is used to smooth out some scratches caused by the raised components, and evenly scrape the paint on the surface of the substrate to ensure that there are no obvious flaws in the appearance.

[0054] Furthermore, in this example, a first protrusion component 120 and several second protrusion components 130 are provided on the operating surface 111 of the scraper body 110, and the several second protrusion components 130 are distributed on both sides of the first protrusion component 120, and the height of the first protrusion component 120 is greater than that of the second protrusion component 130.

[0055] Relative to the operating surface 111 of the scraper body 110, the first protrusion component 120 thereon is the thickest (i.e., the highest), so that the wet film thickness of the protective paint formed in the area corresponding to the first protrusion component (such as the blade mold seam) is not lower than a certain limit value, which is limited by the thickness of the first protrusion component.

[0056] The thickness of the second protrusion component 130 is determined according to actual needs, but is lower than the thickness of the first protrusion component 120, so as to support a certain height so that the area corresponding to the second protrusion component 130 (such as the area where the blade mold seam extends to both sides) can also be evenly coated with paint.

[0057] Thus, in a specific implementation, the thickness of the first protrusion component distributed in the middle is the thickest, and the thickness of the second protrusion components distributed on both sides of the first protrusion component decreases from the middle to both sides to meet the paint film thickness requirements.

[0058] It should be noted that the number and arrangement of the second protrusion components 130 on both sides of the first protrusion component 120 can be determined based on actual needs, and can be 1, 2, 3, 4, 5, etc. The number of second protrusion components 130 on both sides can be the same or different. The spacing between adjacent second protrusion components 130 can be the same or different.

[0059] The thus formed applicator-type scraper can easily adhere to the substrate for scraping during construction due to its flexible scraper body. At the same time, a support point is formed by the first protruding component in the middle, and it cooperates with the second protruding components on both sides of the first protruding component to effectively control the film thickness during scraping.

[0060] At the same time, this applicator-type scraper has been transformed from a face-to-line type to a face-to-face type. Compared to existing scrapers, the angle between the scraper body and the substrate is completely determined by the hand shape during operation. The leading edge of the scraper is a line and the substrate is a surface, which cannot guarantee the appropriate angle of contact. During operation, the first and second raised protrusion components of this applicator-type scraper 100 can effectively stabilize the scraper leading edge line and the scraper body itself to form a surface, and can maintain a stable angle with the substrate surface, thereby minimizing the deviation caused by construction. Furthermore, this applicator-type scraper 100 changes the original scraper's dense serrations into a sparse support structure with dots or strips. During construction, the scraper can be 100% tightly attached to the substrate, with very few serrations and almost no scratches. There is no need to manually control the angle, making construction operations more convenient and enabling precise control of film thickness.

[0061] A further optimization solution is given here for the above solution.

[0062] The first protrusion components in this solution can be distributed in the middle or on both side edges of the operating surface of the scraper body.

[0063] The extending direction of the first protrusion assembly in this solution is the same as the operating direction of the scraper body.

[0064] The first protrusion assembly in this solution is composed of at least one first protrusion unit.

[0065] If there are multiple first protrusion units (ie, more than 2), the multiple first protrusion units are arranged in a certain manner to form a first protrusion assembly.

[0066] For example, the first protrusion unit in this solution is in the shape of a strip, a convex point, a strip formed by arranging a plurality of convex points, or a roller, etc. The first protrusion unit structure is not limited to this, and other design solutions can be adopted as needed.

[0067] The top of the first protrusion unit in this solution is arc-shaped or hemispherical, which is convenient for reducing friction during construction on the blade. It should be noted that the top solution of the first protrusion unit is not limited to this, and other design solutions can be adopted as needed.

[0068] The distribution length of the first protrusion units in this solution (ie the distribution length of the first protrusion assembly) is preferably 1 / 5 to 4 / 5 of the width of the scraper body operating surface, and can also cover the entire width of the scraper body operating surface as needed.

[0069] The width of the first protrusion unit in this solution is preferably 0.1-3 cm.

[0070] The thickness of the first protruding unit in this solution can be changed according to actual construction requirements, and is generally thicker than the second protruding unit, preferably 0.1-0.3 cm. It should be noted that the thickness of the first protruding unit is not limited to this, and other design solutions can be adopted as needed.

[0071] The second protrusion components in this solution can be distributed in the middle and / or at the edges of both sides of the operating surface of the scraper body.

[0072] The extending direction of the second protrusion assembly in this solution is the same as the operating direction of the scraper body.

[0073] The second protrusion assembly in the solution is composed of at least one second protrusion unit.

[0074] If there are multiple second protrusion units (ie, more than 2), the multiple second protrusion units are arranged in a certain manner to form a second protrusion assembly.

[0075] For example, the second protrusion unit in this embodiment is in the shape of a strip, a convex point, a strip formed by arranging a plurality of convex points, or a roller, etc. The second protrusion unit structure is not limited to this, and other design schemes can be adopted as needed.

[0076] The top of the second protruding unit in this solution is arc-shaped or hemispherical, which is convenient for reducing friction during construction on the blade. It should be noted that the top solution of the first protruding unit is not limited to this, and other design solutions can be adopted as needed.

[0077] The distribution length of the second protrusion units in this solution (ie the distribution length of the first protrusion components) is preferably 1 / 5 to 4 / 5 of the width of the scraper body operating surface, and can also cover the entire width of the scraper body operating surface as needed.

[0078] The width of the second protrusion unit in this solution is preferably 0.1-3 cm.

[0079] The thickness of the second protruding unit in this solution can be changed according to actual construction requirements, and is generally thinner than the first protruding unit, preferably 0-0.15 cm. It should be noted that the thickness of the second protruding unit is not limited to this, and other design solutions can be adopted as needed.

[0080] On this basis, the present solution can further provide operating handle assemblies 140 at both ends of the scraper body, which facilitates operation.

[0081] The specific structure of the handle assembly 140 can be determined according to actual needs.

[0082] In addition, in a specific implementation, the first protrusion assembly and / or the second protrusion assembly in this solution is fixed on the operating surface of the scraper body or replaceably set on the operating surface of the scraper body, thereby adjusting the setting scheme of the protrusion on the coater-type scraper according to actual needs.

[0083] By using the applicator-type scraper provided in this example, the leading edge of the blade can be coated with protective paint very conveniently, and the leading edge protective paint thickness is formed to be thickest at the die seam and thinner on both sides.

[0084] During the specific coating operation, the scraper body can control the angle with the leading edge surface of the blade to remain almost unchanged, maintaining face-to-face fit, supporting the entire scraper through the raised parts, and stabilizing the angle between the scraper and the leading edge surface of the blade.

[0085] For example, when using this scraper for efficient coating, you only need to bend the scraper and stick it on the blade substrate, align the first raised part on it with the mold seam, and the scraper as a whole is perpendicular to the direction of the blade. Pull the handles at both ends of the scraper from both ends, and apply pressure towards the blade from both ends to ensure a tight fit between the scraper and the blade substrate.

[0086] Next, drag the scraper directly so that the scraper moves along the surface of the blade substrate;

[0087] Finally, when the scraper passes over the surface area of ​​the blade substrate to apply paint, a pressing force is applied while a force is applied to move along the mold seam direction to complete the scraping operation.

[0088] During this process, the first protrusion component on the scraper corresponds to the blade substrate mold seam, and the first protrusion component protrudes the highest from the scraper operating surface, so it can support the formation of the thickest molding space between the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the molding space and the scraper operating surface, the paint at the blade substrate mold seam is formed at the blade substrate mold seam completely according to the shape (including thickness) of the molding space, so that the thickness of the paint layer formed at the blade substrate mold seam is the thickest (relative to other areas); at the same time, since the thickness of the first protrusion component remains unchanged during the entire moving scraping process, and then the molding space between the blade substrate mold seam and the scraper operating surface remains unchanged, the thickness of the paint layer formed at the blade substrate mold seam can be made uniform.

[0089] Furthermore, although the first protrusion component will scratch the paint layer formed at the mold seam of the blade substrate during the scraping process with the movement of the scraper, leaving scratches, due to the thin structural characteristics of the first protrusion component, the scratches formed are very small. Therefore, after the first protrusion component passes, the paint will quickly heal due to its fluidity to form a complete plane; at the same time, since the operating surface of the scraper is in direct contact with the paint during the entire scraping process, the surface of the paint layer formed at the mold seam of the blade substrate is smooth and free of burrs, thereby improving the performance of the entire paint layer.

[0090] In this process, several second protrusion components located on both sides of the first protrusion component on the scraper correspond to the diffusion areas on both sides of the blade substrate mold seam, respectively. At the same time, the height of the second protrusion component protruding from the scraper operating surface is lower than the height of the first protrusion component protruding from the scraper operating surface, so that they can respectively support and form thinner side molding spaces between the diffusion areas on both sides of the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the side molding spaces and the scraper operating surface, the paint in the diffusion areas on both sides of the blade substrate mold seam is formed on the diffusion areas on both sides of the blade substrate mold seam completely according to the shape (including thickness) of the molding space, so that the thickness of the paint layer formed in the diffusion areas on both sides of the blade substrate mold seam is less than the thickness of the paint layer at the blade substrate mold seam; at the same time, since the thickness of the second protrusion component remains unchanged during the entire moving scraping process, and then the molding space between the diffusion areas on both sides of the blade substrate mold seam and the scraper operating surface remains unchanged, the thickness of the paint layer formed in the diffusion areas on both sides of the blade substrate mold seam can be made uniform.

[0091] Similarly, although the second protrusion component will scratch the paint layer in the diffusion area on both sides of the blade substrate mold seam during the scraping process as the scraper moves, leaving scratches, the scratches formed are very small due to the thin structural characteristics of the second protrusion component. Therefore, after the second protrusion component passes, the paint will quickly heal due to its fluidity to form a complete plane. At the same time, since the operating surface of the scraper directly contacts the paint during the entire scraping process, the surface of the paint layer in the diffusion area on both sides of the blade substrate mold seam is smooth and burr-free, thereby improving the performance of the entire paint layer.

[0092] Because the mold seam is most severely affected by heavy rain erosion when the blade rotates at high speed, the leading edge protective paint film must be thickest at the middle mold seam on the blade, and the protective paint film in the area spreading from the mold seam to both sides must be slightly thinner than that in the middle.

[0093] Based on this, this example demonstrates that the blade can be used to directly apply leading edge protective paint to the leading edge of a wind turbine blade. This allows for a coating that is thickest at the die seam and thinner on either side. This allows for efficient application of protective paint to the leading edge of the blade, while effectively controlling the thickness, meeting the construction requirement of having the coating thickest at the die seam and thinner on either side.

[0094] Finally, it should be noted that the scraper solution provided in this solution can be used for, but not limited to, wind power-related substrates; this scraper solution can be used for, but not limited to, polished substrates.

[0095] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. Spreader type scraper, characterized in that, The scraper comprises a flexible scraper body, wherein the operating surface of the scraper body is provided with a first protrusion component and a plurality of second protrusion components, wherein the first protrusion component is taller than the second protrusion component, and the first protrusion component is formed by two or more first protrusion units arranged in a certain manner, and each first protrusion unit is in the shape of a convex point; The plurality of second protrusion components are distributed on both sides of the first protrusion component, and the distribution spacing between adjacent second protrusion components is different. Each second protrusion component is formed by arranging more than two second protrusion units, and each second protrusion unit is in the shape of a strip composed of a plurality of protrusions. The first protrusion component corresponds to the blade substrate mold seam, and can support and form the thickest molding space between the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the molding space and the scraper operating surface, the paint at the blade substrate mold seam is completely formed at the blade substrate mold seam according to the thickness of the molding space; The second protrusion components correspond to the diffusion areas on both sides of the blade substrate mold seam, and support and form thinner side molding spaces between the diffusion areas on both sides of the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the side molding spaces and the scraper operating surface, the paint in the diffusion areas on both sides of the blade substrate mold seam is completely formed on the diffusion areas on both sides of the blade substrate mold seam according to the thickness of the molding space.

2. The applicator-type scraper according to claim 1, characterized in that The first protrusion components can be distributed in the middle or at the edges of both sides of the operating surface of the scraper body.

3. The applicator-type scraper according to claim 1, characterized in that The extending direction of the first protrusion assembly is the same as the operating direction of the scraper body.

4. The applicator-type scraper according to claim 1, characterized in that The length of the first protrusion component is 1 / 5 to 4 / 5 of the width of the operating surface of the scraper body.

5. The applicator-type scraper according to claim 1, characterized in that The width of the first protruding component is 0.1-3 cm.

6. The applicator-type scraper according to claim 1, characterized in that The thickness of the first protruding component is 0.1-0.3 cm.

7. The applicator-type scraper according to claim 1, characterized in that The top of the first protrusion unit is in an arc shape.

8. The applicator-type scraper according to claim 1, characterized in that The second protrusion components can be distributed in the middle or at the edges of both sides of the operating surface of the scraper body.

9. The applicator-type scraper according to claim 1, characterized in that The extending direction of the second protrusion assembly is the same as the operating direction of the scraper body.

10. The applicator-type scraper according to claim 1, characterized in that The length of the second protrusion assembly is 1 / 5 to 4 / 5 of the width of the operating surface of the scraper body.

11. The applicator-type scraper according to claim 1, characterized in that The width of the second protruding component is 0.1-3 cm.

12. The applicator-type scraper according to claim 1, characterized in that The thickness of the second protruding component is 0-0.15 cm.

13. The spreader blade according to claim 1, wherein The top of the second protrusion component is in an arc shape.

14. The applicator-type scraper according to claim 1, characterized in that Both ends of the scraper body are provided with operating handle assemblies.

15. The spreader blade according to claim 1, wherein The first protrusion assembly and / or the second protrusion assembly is fixedly mounted on the operating surface of the scraper body or is replaceably mounted on the operating surface of the scraper body.

16. The efficient coating construction process is characterized by: include: Bend the applicator-type scraper according to any one of claims 1 to 15, directly and tightly fit it on the blade substrate, align the first protrusion component on the applicator-type scraper with the die seam of the blade substrate, so that the second protrusion components on both sides of the first protrusion component on the applicator-type scraper fit the diffusion areas on both sides of the die seam of the blade substrate; the first protrusion component is greater in height than the second protrusion component; Drag the scraper directly so that it covers the mold seam of the blade and the diffusion areas on both sides, and moves along the surface of the blade substrate; When the scraper passes over the protective paint on the surface area of ​​the blade substrate, pressing pressure can be applied from both sides, and a driving force can be applied along the direction of the mold seam to ensure that the scraper is always closely attached to the blade substrate, completing the coating of the protective paint on the surface of the blade substrate in a surface contact manner.

17. The efficient coating construction process according to claim 16, characterized in that: When the applicator-type scraper is attached to the blade substrate, the first protrusion component on the scraper corresponds to the blade substrate's die seam, and the first protrusion component supports and forms the thickest forming space between the blade substrate's die seam and the scraper operating surface. Based on the cooperation between the forming space and the scraper operating surface, the paint at the blade substrate's die seam is completely formed at the blade substrate's die seam according to the thickness of the forming space. At the same time, several second protrusion components located on both sides of the first protrusion component on the scraper correspond to the diffusion areas on both sides of the blade substrate mold seam, and support and form thinner side molding spaces between the diffusion areas on both sides of the blade substrate mold seam and the scraper operating surface. Based on the cooperation between the side molding space and the scraper operating surface, the paint in the diffusion areas on both sides of the blade substrate mold seam is completely formed on the diffusion areas on both sides of the blade substrate mold seam according to the thickness of the molding space.

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