Spraying equipment for thermal insulation coating construction and construction process

Abstract

The invention relates to the technical field of spray guns, in particular to spraying equipment for thermal insulation coating construction and a construction technology.The spraying equipment comprises a pneumatic spray gun used for spraying self-extinguishing hard polyurethane thermal insulation coating, an annular groove is formed in the front end of the pneumatic spray gun, and a first buckle plate and a second buckle plate are arranged on the upper side and the lower side of the annular groove in a buckled mode respectively; a connecting block is fixed to the surface of the pneumatic spray gun, two sets of inserting blocks are inserted into the surface of the connecting block, the two sets of inserting blocks penetrate through the connecting block and then are inserted into the surfaces of a first buckle plate and a second buckle plate, storage grooves are formed in the surfaces of the first buckle plate and the second buckle plate, rubber covers are arranged in the two storage grooves in a sleeved mode, and one ends of the rubber covers are fixed into the two storage grooves; the spray nozzle has the beneficial effects that the detachable protective cover is designed on the spray nozzle part and used for protecting the spray nozzle from being polluted by impurities such as oil stains and dust in the construction process; and through integration of accessories such as the rubber cover, the elastic hoop piece and the scraping piece, various construction requirements such as spraying, protection and cleaning can be met without additionally preparing various tools.

Description

Technical Field

[0001] The invention relates to the technical field of spray guns, in particular to spraying equipment and a construction process for thermal insulation coating construction. Background Art

[0002] The use of traditional spray guns has always been a key link in the construction of thermal insulation coatings for port logistics containers. However, there is a significant design flaw in traditional spray guns, which is the lack of effective nozzle protection and convenient cleaning mechanism.

[0003] First of all, nozzle protection is crucial. In the port logistics environment, there are often impurities such as oil, dust, and rust on the surface of the container. These impurities not only affect the adhesion of the coating, but may also cause clogging or wear of the nozzle. Traditional spray guns are usually not designed with nozzle protection in mind, which makes the nozzle easily contaminated and damaged during use, thus affecting the spraying effect and the service life of the spray gun.

[0004] Secondly, nozzle cleaning is also an issue that cannot be ignored. During the construction of the thermal insulation coating, the paint may remain inside or around the nozzle. If it is not cleaned in time, it will not only affect the effect of the next spraying, but may also cause nozzle blockage. Traditional spray guns are usually cumbersome to clean, and the nozzle needs to be manually disassembled for cleaning, which not only increases the construction time, but may also cause secondary damage to the nozzle.

[0005] In order to solve the above problems, especially the actual needs in the construction of thermal insulation coatings for port logistics containers, the present invention proposes a thermal insulation coating construction spraying device with nozzle protection and cleaning functions. The device aims to improve the spraying efficiency and quality and extend the service life of the spray gun by designing an innovative nozzle protection structure and a convenient cleaning mechanism. Summary of the invention

[0006] The purpose of the present invention is to provide a spraying device and a construction process for thermal insulation coating construction to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a spraying device for thermal insulation coating construction, comprising a pneumatic spray gun for spraying self-extinguishing rigid polyurethane thermal insulation coating, the front end of the pneumatic spray gun is provided with an annular groove, and the upper and lower sides of the annular groove are respectively provided with a buckle plate 1 and a buckle plate 2, a connecting block is fixed on the surface of the pneumatic spray gun, and two groups of plug-in blocks are plugged into the surface of the connecting block, and the two groups of plug-in blocks penetrate the connecting block and are respectively plugged into the surfaces of the buckle plate 1 and the buckle plate 2, and the surfaces of the buckle plate 1 and the buckle plate 2 are both provided with receiving grooves, and the interiors of the two receiving grooves are provided with rubber covers, one end of the rubber covers is fixed inside the two receiving grooves, and the other end of the rubber covers is fixed with a rubber ring, and an elastic hoop is plugged into the side of the buckle plate 2 away from the receiving groove, a rubber gasket is fixed on the inner annular surface of the elastic hoop, bristles are fixed on the outer annular surface of the elastic hoop, and a scraper is plugged into the outer annular surface of the buckle plate 1.

[0008] Preferably, buckle plate one and buckle plate two are both semicircular ring plate structures, and rubber clips are fixed at both ends of buckle plate one and buckle plate two. After buckle plate one and buckle plate two are buckled in the annular groove and connected through the plug block, the rubber clips are clamped between buckle plate one and buckle plate two to produce elastic deformation.

[0009] Preferably, there are two connecting blocks, which are symmetrically distributed about the pneumatic spray gun, a mounting groove is provided on the surface of the connecting block, two plug holes are provided on the surface of the mounting groove, the plug block is inserted into the plug holes, and the length of the plug block is greater than the hole depth of the plug hole, one end of the plug block passes through the connecting block and is inserted into the positioning groove, the positioning groove is provided on the surface of buckle plate one and buckle plate two, the other end of the plug block is fixed to the surface of the traction plate, and the traction plate is inserted in the mounting groove.

[0010] Preferably, the traction piece is an I-shaped plate structure, an elastic band is fixed on the surface of the traction piece, the two ends of the elastic band are respectively fixed on two parallel side walls of the mounting groove, a pull ring is fixed on the surface of the traction piece, and the elastic band passes through the gap between the pull ring and the traction piece.

[0011] Preferably, the storage groove is an annular groove. After buckle plate one and buckle plate two are stacked, the two storage grooves are assembled into a circular ring groove. When the rubber cover is folded inside the storage groove, the rubber ring is stretched and deformed to be sleeved on the front end of the pneumatic spray gun. After the rubber cover is unfolded, the rubber cover is sleeved on the front end of the pneumatic spray gun, and the rubber ring is reset to a circular ring to cover the nozzle of the pneumatic spray gun.

[0012] Preferably, a rubber sealing sheet is fixed to the outer ring surface of the receiving groove, the rubber sealing sheet is a semicircular ring sheet, the inner diameter of the rubber sealing sheet is equal to the inner diameter of the receiving groove, and after one end of the rubber cover extends out of the receiving groove, the rubber sealing sheet clamps the rubber cover.

[0013] Preferably, a baffle is fixed on the surface of the rubber ring, and a plurality of baffles are provided, and the plurality of baffles are arranged and distributed at equal distances and sizes along the rubber ring. A guide head is fixed at one end of the baffle, and the rod diameter of the guide head is smaller than the nozzle diameter of the pneumatic spray gun.

[0014] Preferably, a side groove is provided on the side of the second buckle plate away from the storage groove, and the side groove is a circular arc groove, and the outer diameter of the side groove is equal to the outer diameter of the second buckle plate. The elastic hoop is an arc-shaped plate, and a plurality of through holes are provided on the surface of the elastic hoop, and a limiting column is inserted inside the perforations, and one end of the limiting column is fixed to the surface of the side groove, and the width of the elastic hoop is greater than the depth of the side groove. Rubber finger sleeves are fixed at both ends of the elastic hoop, and the rubber finger sleeves are square covers. The openings of the two rubber finger sleeves are opposite to each other, and the bristles are covered on the outer ring surface of the elastic hoop between the two rubber finger sleeves.

[0015] Preferably, the outer ring surface of the buckle plate 1 is provided with an embedding groove, the embedding groove is an arc-shaped groove, the scraper blade is an arc-shaped plate, the scraper blade is inserted into the embedding groove, the inner ring surface of the scraper blade is integrally formed with a blade, the outer ring surface of the scraper blade is smaller than the outer ring surface of the buckle plate 1, and a plurality of protrusions are fixed on the outer ring surface of the scraper blade, the protrusions are "T"-shaped cylinders.

[0016] A construction process, using a spraying device for thermal insulation coating construction, the process comprises the following steps:

[0017] Base treatment: Clean the container surface thoroughly to remove oil, dust, rust and impurities, and ensure that the surface is dry and flat; if necessary, polish the container surface to improve the adhesion between the polyurethane and the base;

[0018] Material preparation: Select self-extinguishing rigid polyurethane insulation materials that meet national standards, including isocyanate component A and polyol component B, as well as necessary catalysts and foaming agent additives, ensure that the materials are within the validity period and are mixed evenly;

[0019] Environmental requirements: The construction environment temperature should be appropriate, usually between 15℃ and 40℃, avoid construction in extremely high or low temperature environments, and the relative humidity should be less than 80%, avoid construction in high humidity environments;

[0020] Primer spraying: In order to improve the adhesion between polyurethane and the base layer, some projects will first spray a layer of special primer. The primer needs to be evenly applied without omissions. Polyurethane spraying can be carried out after it dries. Use professional polyurethane spraying equipment to mix components A, B and additives in proportion, and then spray them onto the container surface with high pressure through a pneumatic spray gun;

[0021] Leveling and finishing: After spraying, the insulation layer is initially leveled, excess materials are removed, and local unevenness or defective parts are repaired to ensure the quality of the insulation layer;

[0022] Maintenance: The polyurethane insulation layer needs to be maintained for a certain period of time to allow it to fully solidify and achieve optimal performance. During the maintenance period, water spray and impact that may affect the quality of the insulation layer should be avoided.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The spraying equipment and construction process for the thermal insulation coating construction proposed in the present invention are designed with a detachable protective cover on the nozzle part to protect the nozzle from contamination by impurities such as oil and dust during the construction process; through the integration of accessories such as rubber covers, elastic hoops, scrapers, etc., it is possible to meet various construction needs such as spraying, protection, and cleaning without the need to prepare multiple tools; by integrating multiple functions, the need to purchase multiple construction tools is avoided, and the construction cost is reduced. In addition, the optimized construction process also reduces material waste and repetitive work, further reducing construction costs; the design of the equipment takes into account the convenience of the construction process, such as rapid installation and disassembly through plug-in, elastic deformation, etc., reducing the preparation time during the construction process. At the same time, the cleaning and protection functions integrated in the equipment also avoid repetitive work during the construction process and improve the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0027] Figure 3 This is a structural schematic diagram of the present invention in which the first and second gusset plates are installed behind a pneumatic spray gun;

[0028] Figure 4 This is a schematic diagram of the connection structure between the pneumatic spray gun and the connection block of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the connection block connecting the first gusset plate and the second gusset plate of the present invention;

[0030] Figure 6 for Figure 5 Front view of the middle structure;

[0031] Figure 7 for Figure 6 Structural cross-section view at AA in the middle;

[0032] Figure 8 This is a schematic diagram of the connection structure between the plug block and the traction piece of the present invention;

[0033] Fig. 9 This is a schematic diagram of the connection block structure of the present invention;

[0034] Fig.10This is a schematic diagram of the elastic hoop structure of the present invention;

[0035] Fig.11 This is a schematic diagram of the scraper structure of the present invention;

[0036] Fig.12 This is a schematic diagram of the structure after the gusset plate 1 and the gusset plate 2 of the present invention are stacked;

[0037] Fig.13 for Fig.12 Schematic diagram of the front side of the middle structure;

[0038] Fig.14 for Fig.13 Front view of the middle structure;

[0039] Fig.15 for Fig.14 Structural cross-section view at the middle BB;

[0040] Fig.16 for Fig.15 A magnified schematic diagram of the structure at B in the middle;

[0041] Fig.17 It is a schematic diagram of the second structure of the gusset plate of the present invention.

[0042] In the figure: pneumatic spray gun 1, gusset plate 1 2, gusset plate 2 3, connecting block 4, mounting groove 5, jack 6, plug block 7, positioning groove 8, traction piece 9, elastic band 10, pull ring 11, storage groove 12, rubber cover 13, rubber ring 14, rubber sealing piece 15, baffle 16, guide head 17, rubber clip 18, side groove 19, elastic hoop 20, perforation 21, limiting column 22, rubber gasket 23, rubber finger sleeve 24, bristles 25, embedded groove 26, scraper 27, rubber clip 28, protrusion 29. DETAILED DESCRIPTION

[0043] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] For example, see Figures 1 to 17The present invention provides a technical solution: a spraying device for the construction of thermal insulation coating, comprising a pneumatic spray gun 1, which is used for spraying self-extinguishing hard polyurethane thermal insulation coating, wherein the front end of the pneumatic spray gun 1 is provided with an annular groove, and the upper and lower sides of the annular groove are respectively buckled with a buckle plate 2 and a buckle plate 3, and the surface of the pneumatic spray gun 1 is fixed with a connecting block 4, and the surface of the connecting block 4 is plugged with two groups of plug blocks 7, and the two groups of plug blocks 7 penetrate the connecting block 4 and are respectively plugged into the surfaces of the buckle plate 1 2 and the buckle plate 2 3, and the buckle plate 1 2 and the buckle plate 2 3 are both semicircular ring plate structures, and rubber clips 18 are fixed at both ends of the buckle plate 1 2 and the buckle plate 2 3, and after the buckle plate 1 2 and the buckle plate 2 3 are buckled in the annular groove and plugged through the plug block 7, the rubber clip 18 is clamped between the buckle plate 1 2 and the buckle plate 2 3 to produce elastic deformation; the connecting block 4 is provided with There are two, two connecting blocks 4 are symmetrically distributed about the pneumatic spray gun 1, a mounting groove 5 is provided on the surface of the connecting block 4, two plug holes 6 are provided on the surface of the mounting groove 5, a plug block 7 is inserted in the plug hole 6, and the length of the plug block 7 is greater than the hole depth of the plug hole 6, one end of the plug block 7 passes through the connecting block 4 and is inserted in the positioning groove 8, the positioning groove 8 is provided on the surface of the buckle plate 1 2 and the buckle plate 2 3, the other end of the plug block 7 is fixed on the surface of the traction piece 9, and the traction piece 9 is inserted in the mounting groove 5; the traction piece 9 is an "I"-shaped plate structure, an elastic band 10 is fixed on the surface of the traction piece 9, and the two ends of the elastic band 10 are respectively fixed on two parallel side walls of the mounting groove 5, a pull ring 11 is fixed on the surface of the traction piece 9, and the elastic band 10 passes through the gap between the pull ring 11 and the traction piece 9.

[0045] When in use, in order to realize the installation and fixation of buckle plate 1 2 and buckle plate 2 3 on the front end of the pneumatic spray gun 1, it should be noted that buckle plate 1 2 and buckle plate 2 3 are optional structures, that is, under the premise that the pneumatic spray gun 1 meets its own use requirements, after buckle plate 1 2 and buckle plate 2 3 are installed at the front end of the pneumatic spray gun 1, the auxiliary structures on buckle plate 1 2 and buckle plate 2 3 are used to enrich the functionality of the pneumatic spray gun 1; before installing buckle plate 1 2 and buckle plate 2 3, the two connecting blocks 4 need to be glued and fixed to the surface of the pneumatic spray gun 1, and after the glue solidifies and ensures that the connecting blocks 4 are firmly installed, buckle plate 1 2 and buckle plate 2 3 are respectively buckled on the upper and lower sides of the annular groove at the front end of the pneumatic spray gun 1. In the process of bringing buckle plate 1 2 and buckle plate 2 3 closer, the pull ring 11 is pinched by hand to pull the traction sheet 9 to pull the plug block 7 into the socket 6. At this time, the elastic band 10 is pulled by the traction sheet 9 to produce Elastic deformation. The reason why the traction piece 9 is set to an "I" shape is to provide deformation space for the elastic band 10 at the notches on both sides of the traction piece 9, that is, the elastic band 10 reserves a width that is not connected to the traction piece 9 for tensioning and deformation; when the buckle plate 1 2 and the buckle plate 2 3 are stacked together, the traction piece 9 is pushed back to push one end of the plug block 7 into the positioning groove 8. At this time, the buckle plate 1 2 and the buckle plate 2 3 are plugged and limited by the plug block 7, and the rubber clip 18 is squeezed between the buckle plate 1 2 and the buckle plate 2 3 to generate an elastic deformation rebound force so that the positioning groove 8 and the plug block 7 are tightly stuck together to prevent the buckle plate 1 2 and the buckle plate 2 3 from separating; it should be noted that the rubber cover 13 is elastic, and it is necessary to pry apart the buckle plate 1 2 and the buckle plate 2 3 to tension the rubber cover 13. After the deformation sleeve is set on the front end of the pneumatic spray gun 1, the buckle plate 1 2 and the buckle plate 2 3 are pushed together.

[0046] The surfaces of the gusset plate 1 2 and the gusset plate 2 3 are both provided with a receiving groove 12, and the inside of the two receiving grooves 12 is sleeved with a rubber cover 13, one end of the rubber cover 13 is fixed inside the two receiving grooves 12, and the other end of the rubber cover 13 is fixed with a rubber ring 14, and the receiving groove 12 is an annular groove. After the gusset plate 1 2 and the gusset plate 2 3 are stacked, the two receiving grooves 12 are assembled into a circular groove, and when the rubber cover 13 is folded inside the receiving groove 12, the rubber ring 14 is stretched and deformed and sleeved on the front end of the pneumatic spray gun 1, and after the rubber cover 13 is unfolded, the rubber cover 13 is sleeved on the front end of the pneumatic spray gun 1, and the rubber ring 14 is reset to a circular ring to cover the spray of the pneumatic spray gun 1 Nozzle, a rubber sealing piece 15 is fixed to the outer ring surface of the receiving groove 12, and the rubber sealing piece 15 is a semicircular ring piece. The inner diameter of the rubber sealing piece 15 is equal to the inner diameter of the receiving groove 12. After one end of the rubber cover 13 extends out of the receiving groove 12, the rubber sealing piece 15 clamps the rubber cover 13; a baffle 16 is fixed to the surface of the rubber ring 14, and a plurality of baffles 16 are provided. The plurality of baffles 16 are arranged and distributed at equal distances and in equal sizes along the rubber ring 14, and a guide head 17 is fixed to one end of the baffle 16, and the rod diameter of the guide head 17 is smaller than the nozzle diameter of the pneumatic spray gun 1.

[0047] When in use, in order to realize the protection of the nozzle of the pneumatic spray gun 1 after the rubber cover 13 is unfolded, and the rubber cover 13 is folded and stored after use; when the pneumatic spray gun 1 is in use, the nozzle of the pneumatic spray gun 1 is exposed, and at this time the rubber cover 13 is inserted into the storage groove 12, and the rubber ring 14 is expanded and sleeved on the front end of the pneumatic spray gun 1, and the rubber sealing piece 15 blocks the notch of the storage groove 12; when the pneumatic spray gun 1 is used up and the residual thermal insulation paint on the nozzle needs to be cleaned and protected, the rubber cover 13 is pulled out of the storage groove 12 by the rubber ring 14, and when the rubber ring 14 is pulled After reaching the front side of the nozzle of the pneumatic spray gun 1, pinch the baffle 16 by hand to insert the guide head 17 into the nozzle, and pry out the thermal insulation coating remaining inside the nozzle to prevent the thermal insulation coating from clogging the nozzle of the pneumatic spray gun 1 after solidification. The unfolded rubber cover 13 is set on the front end of the pneumatic spray gun 1 for protection, and the rubber ring 14 is reset from the annular structure, and the inner ring mouth of the annular structure is closed by the fluffy material on the outside of the rubber ring 14. The annular structure blocks the front of the nozzle to protect the nozzle, and the latter pushes the annular rubber ring 14 into the nozzle. At this time, the baffle 16 blocks the outside of the nozzle to prevent debris from entering the nozzle.

[0048] An elastic hoop 20 is inserted on the side of the buckle plate 23 away from the storage groove 12, and a rubber gasket 23 is fixed to the inner ring surface of the elastic hoop 20, and bristles 25 are fixed to the outer ring surface of the elastic hoop 20. A side groove 19 is provided on the side of the buckle plate 23 away from the storage groove 12. The side groove 19 is a circular arc groove, and the outer diameter of the side groove 19 is equal to the outer diameter of the buckle plate 23. The elastic hoop 20 is an arc-shaped plate, and a plurality of through holes 21 are provided on the surface of the elastic hoop 20. Limiting columns 22 are inserted inside the through holes 21, and one end of the limiting columns 22 is fixed to the surface of the side groove 19. The width of the elastic hoop 20 is greater than the depth of the side groove 19. Rubber finger sleeves 24 are fixed at both ends of the elastic hoop 20. The rubber finger sleeves 24 are square covers, and the openings of the two rubber finger sleeves 24 are opposite to each other. The bristles 25 cover the outer ring surface of the elastic hoop 20 between the two rubber finger sleeves 24.

[0049] When in use, in order to realize the use of the elastic hoop sheet 20 to screw and disassemble the spray head, and to use the bristles 25 on the back of the elastic hoop sheet 20 to clean the surface of the pneumatic spray gun 1, when it is necessary to screw and disassemble the spray head of the pneumatic spray gun 1 or to screw and disassemble other connecting pipes, the elastic hoop sheet 20 is pulled out from the side groove 19. It should be noted that when the elastic hoop sheet 20 is pushed into the side groove 19, the elastic hoop sheet 20 is squeezed toward the inner ring mouth to produce a slight deformation. In order to insert the elastic hoop sheet 20 into the side groove 19 and the limit column 22 into the through hole 21, the elastic force of the elastic hoop sheet 20 rebounds and resets so that the through hole 21 and the limit column 22 are tightly together, that is, the elastic hoop sheet 20 is increased from the side groove 1 9. The resistance to withdrawal prevents the elastic hoop 20 from falling off from the side groove 19 when there is no external force. After the elastic hoop 20 is pulled out of the side groove 19, two fingers are respectively inserted into the two rubber finger sleeves 24, and the elastic hoop 20 is buckled on the structure to be screwed. The two fingers are closed. At this time, the elastic hoop 20 is squeezed and deformed, and the rubber gasket 23 is tightly clamped between the elastic hoop 20 and the structure to be screwed, which increases the friction of the screwing structure of the elastic hoop 20 and avoids the finger pain caused by directly screwing the structure with bare hands. The reason why the bristles 25 are added to the back of the elastic hoop 20 is to clean the surface of the pneumatic spray gun 1 to avoid the cost investment caused by specially preparing a cleaning structure.

[0050] A scraper 27 is inserted into the outer ring surface of the buckle plate 2, and an embedding groove 26 is opened on the outer ring surface of the buckle plate 2. The embedding groove 26 is an arc-shaped groove, and the scraper 27 is an arc-shaped plate. The scraper 27 is inserted in the embedding groove 26. The inner ring surface of the scraper 27 is integrally formed with a blade. The outer ring surface of the scraper 27 is smaller than the outer ring surface of the buckle plate 2. A plurality of protrusions 29 are fixed on the outer ring surface of the scraper 27, and the protrusions 29 are "T"-shaped cylinders.

[0051] During use, in order to use the scraper 27 to scrape off the residual thermal insulation paint at the nozzle of the pneumatic spray gun 1; when it is necessary to scrape off the thermal insulation paint adhered to the surface of the pneumatic spray gun 1, the protrusion 29 is pinched by hand to pull the scraper 27 out of the embedding groove 26, and the blade of the inner ring of the scraper 27 is used to scrape off the thermal insulation paint that needs to be cleaned. The scraper 27 after use is pushed into the embedding groove 26 for storage. Rubber clamping strips 28 are fixed on the two parallel side walls of the embedding groove 26. After the scraper 27 is inserted into the embedding groove 26, the rubber clamping strip 28 is elastically deformed, thereby preventing the scraper 27 from being bumped and popped out and falling in the embedding groove 26. That is, the scraper 27 is integrated into the interior of the buckle plate 2, and there is no need to specially prepare a scraping structure for the thermal insulation paint, and the functionality of the buckle plate 2 is enriched.

[0052] Embodiment 2, based on embodiment 1, proposes a construction process, using a spraying device for thermal insulation coating construction, the process comprises the following steps:

[0053] Base treatment: Clean the container surface thoroughly to remove oil, dust, rust and impurities, and ensure that the surface is dry and flat; if necessary, polish the container surface to improve the adhesion between the polyurethane and the base;

[0054] Material preparation: Select self-extinguishing rigid polyurethane insulation materials that meet national standards, including isocyanate component A and polyol component B, as well as necessary catalysts and foaming agent additives, ensure that the materials are within the validity period and are mixed evenly;

[0055] Environmental requirements: The construction environment temperature should be appropriate, usually between 15℃ and 40℃, avoid construction in extremely high or low temperature environments, and the relative humidity should be less than 80%, avoid construction in high humidity environments;

[0056] Primer spraying: In order to improve the adhesion between polyurethane and the base layer, some projects will first spray a layer of special primer. The primer needs to be evenly applied without omission. Polyurethane spraying can be carried out after it dries. Use professional polyurethane spraying equipment to mix components A, B and additives in proportion, and then spray them onto the container surface with high pressure through a pneumatic spray gun 1;

[0057] Leveling and finishing: After spraying, the insulation layer is initially leveled, excess materials are removed, and local unevenness or defective parts are repaired to ensure the quality of the insulation layer;

[0058] Maintenance: The polyurethane insulation layer needs to be maintained for a certain period of time to allow it to fully solidify and achieve optimal performance. During the maintenance period, water spray and impact that may affect the quality of the insulation layer should be avoided.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spraying device for thermal insulation coating construction, comprising a pneumatic spray gun (1), used for spraying self-extinguishing rigid polyurethane thermal insulation coating, characterized in that: The front end of the pneumatic spray gun (1) is provided with an annular groove, and the upper and lower sides of the annular groove are respectively buckled with a buckle plate 1 (2) and a buckle plate 2 (3). A connecting block (4) is fixed on the surface of the pneumatic spray gun (1), and two groups of plug blocks (7) are plugged into the surface of the connecting block (4). The two groups of plug blocks (7) penetrate the connecting block (4) and are respectively plugged into the surfaces of the buckle plate 1 (2) and the buckle plate 2 (3). The surfaces of the buckle plate 1 (2) and the buckle plate 2 (3) are both provided with a receiving groove (12). The two receiving grooves (12) ) is sleeved with a rubber cover (13) inside, one end of the rubber cover (13) is fixed inside the two receiving grooves (12), the other end of the rubber cover (13) is fixed with a rubber ring (14), an elastic hoop sheet (20) is inserted into the side of the second buckle plate (3) away from the receiving groove (12), a rubber gasket (23) is fixed to the inner ring surface of the elastic hoop sheet (20), bristles (25) are fixed to the outer ring surface of the elastic hoop sheet (20), and a scraper (27) is inserted into the outer ring surface of the first buckle plate (2).

2. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: The buckle plate 1 (2) and the buckle plate 2 (3) are both semicircular ring plate structures, and rubber clips (18) are fixed at both ends of the buckle plate 1 (2) and the buckle plate 2 (3). After the buckle plate 1 (2) and the buckle plate 2 (3) are buckled in the annular groove and plugged into the plug block (7), the rubber clips (18) are clamped between the buckle plate 1 (2) and the buckle plate 2 (3) to generate elastic deformation.

3. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: The connecting blocks (4) are provided with two, and the two connecting blocks (4) are symmetrically distributed with respect to the pneumatic spray gun (1). A mounting groove (5) is provided on the surface of the connecting block (4), and two insertion holes (6) are provided on the surface of the mounting groove (5). The insert block (7) is inserted into the insertion hole (6), and the length of the insert block (7) is greater than the hole depth of the insertion hole (6). One end of the insert block (7) passes through the connecting block (4) and is inserted into the positioning groove (8). The positioning groove (8) is provided on the surface of the buckle plate 1 (2) and the buckle plate 2 (3). The other end of the insert block (7) is fixed on the surface of the traction plate (9), and the traction plate (9) is inserted into the mounting groove (5).

4. The spraying equipment for thermal insulation coating construction according to claim 3 is characterized in that: The traction piece (9) is in the form of an I-shaped plate structure. An elastic band (10) is fixed on the surface of the traction piece (9). The two ends of the elastic band (10) are respectively fixed on two parallel side walls of the installation groove (5). A pull ring (11) is fixed on the surface of the traction piece (9). The elastic band (10) passes through a gap between the pull ring (11) and the traction piece (9).

5. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: The receiving groove (12) is an annular groove. After the first buckle plate (2) and the second buckle plate (3) are stacked, the two receiving grooves (12) are assembled into a circular annular groove. When the rubber cover (13) is folded inside the receiving groove (12), the rubber ring (14) is stretched and deformed to be sleeved on the front end of the pneumatic spray gun (1). After the rubber cover (13) is unfolded, the rubber cover (13) is sleeved on the front end of the pneumatic spray gun (1), and the rubber ring (14) is reset to a circular ring to cover the nozzle of the pneumatic spray gun (1).

6. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: A rubber sealing sheet (15) is fixed on the outer ring surface of the receiving groove (12). The rubber sealing sheet (15) is in the form of a semicircular ring. The inner diameter of the rubber sealing sheet (15) is equal to the inner diameter of the receiving groove (12). After one end of the rubber cover (13) extends out of the receiving groove (12), the rubber sealing sheet (15) clamps the rubber cover (13).

7. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: A baffle (16) is fixed on the surface of the rubber ring (14), a plurality of baffles (16) are provided, and the plurality of baffles (16) are arranged and distributed at equal distances and in equal sizes along the rubber ring (14), a guide head (17) is fixed at one end of the baffle (16), and a rod diameter of the guide head (17) is smaller than a nozzle diameter of the pneumatic spray gun (1).

8. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: A side groove (19) is provided on the side of the second buckle plate (3) away from the storage groove (12), the side groove (19) is an arc groove, the outer diameter of the side groove (19) is equal to the outer diameter of the second buckle plate (3), the elastic hoop plate (20) is an arc plate, a plurality of through holes (21) are provided on the surface of the elastic hoop plate (20), a limiting column (22) is inserted into the inside of the through hole (21), one end of the limiting column (22) is fixed on the surface of the side groove (19), the width of the elastic hoop plate (20) is greater than the depth of the side groove (19), rubber finger sleeves (24) are fixed on both ends of the elastic hoop plate (20), the rubber finger sleeves (24) are square covers, the openings of the two rubber finger sleeves (24) are opposite, and the bristles (25) cover the outer ring surface of the elastic hoop plate (20) between the two rubber finger sleeves (24).

9. The spraying equipment for thermal insulation coating construction according to claim 1, characterized in that: The outer ring surface of the buckle plate (2) is provided with an embedding groove (26), the embedding groove (26) is an arc-shaped groove, the scraper (27) is an arc-shaped plate, the scraper (27) is inserted into the embedding groove (26), the inner ring surface of the scraper (27) is integrally formed with a blade, the outer ring surface of the scraper (27) is smaller than the outer ring surface of the buckle plate (2), and a plurality of protrusions (29) are fixed on the outer ring surface of the scraper (27), and the protrusions (29) are "T"-shaped cylinders.

10. A construction process, using the thermal insulation coating construction spraying equipment according to any one of claims 1 to 9, characterized in that: The process comprises the following steps: Base treatment: Clean the container surface thoroughly to remove oil, dust, rust and impurities, and ensure that the surface is dry and flat; if necessary, polish the container surface to improve the adhesion between the polyurethane and the base; Material preparation: Select self-extinguishing rigid polyurethane insulation materials that meet national standards, including isocyanate component A and polyol component B, as well as necessary catalysts and foaming agent additives, ensure that the materials are within the validity period and are mixed evenly; Environmental requirements: The construction environment temperature should be appropriate, usually between 15℃ and 40℃, avoid construction in extremely high or low temperature environments, and the relative humidity should be less than 80%, avoid construction in high humidity environments; Primer spraying: In order to improve the adhesion between polyurethane and the base layer, some projects will first spray a layer of special primer. The primer needs to be evenly applied without omissions. After it dries, polyurethane spraying can be carried out. Use professional polyurethane spraying equipment to mix components A, B and additives in proportion, and then use a pneumatic spray gun (1) to spray it onto the container surface at high pressure; Leveling and finishing: After spraying, the insulation layer is initially leveled, excess materials are removed, and local unevenness or defective parts are repaired to ensure the quality of the insulation layer; Maintenance: The polyurethane insulation layer needs to be maintained for a certain period of time to allow it to fully solidify and achieve optimal performance. During the maintenance period, water spray and impact that may affect the quality of the insulation layer should be avoided.

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