Insulation and decoration integrated ardealite outer wall structure

Abstract

The utility model discloses a heat preservation and decoration integrated ardealite outer wall structure, and belongs to the technical field of house buildings. The structure comprises an ardealite outer wall body and a damp-proof heat preservation decoration layer, and the damp-proof heat preservation decoration layer is connected with the outer wall face of the ardealite outer wall body through a plurality of connecting assemblies; the damp-proof heat-preservation decoration layer comprises a plurality of damp-proof heat-preservation decoration integrated plates which are spliced together. The ardealite outer wall body is mainly formed by building ardealite building blocks, and the use amount and consumption of ardealite are remarkably increased. The damp-proof heat-preservation decoration layer is connected with the outer wall face of the ardealite outer wall body through the multiple connecting assemblies, the connecting strength is large, connection is firm, and the damp-proof heat-preservation decoration layer is not prone to loosening. The damp-proof heat-preservation decoration layer is formed by splicing a plurality of damp-proof heat-preservation decoration integrated plates, the damp-proof and heat-preservation effects are good, the ardealite outer wall body located on the inner side of the damp-proof heat-preservation decoration layer can be well protected, and the service life of the ardealite outer wall body is prolonged.

Description

Technical Field

[0001] This utility model relates to an integrated phosphogypsum exterior wall structure for thermal insulation and decoration, belonging to the field of building construction technology. Background Technology

[0002] Industrial gypsum is an industrial byproduct generated during chemical production, mainly including phosphogypsum and desulfurization gypsum. In phosphoric acid production, 4.5 to 5.5 tons of phosphogypsum are generated for every 1 ton of phosphoric acid produced. Currently, phosphogypsum is primarily disposed of through stockpiling. my country's annual phosphogypsum emissions have reached 80 million tons, with a cumulative stockpile of 600 million tons. Phosphogypsum severely restricts the sustainable development of my country's phosphorus chemical industry. The long-term stockpiling of large quantities of industrial byproduct gypsum not only occupies land but also poses significant environmental safety hazards. Impurities such as fluorides, free phosphoric acid, P2O5, and phosphates contained in phosphogypsum are the main factors causing environmental pollution during stockpiling. Wind and rain erosion also contribute to air, water, and soil pollution. Currently, industrial byproduct gypsum, such as phosphogypsum, is mainly used in cement retarders, paper-faced gypsum board, and gypsum hollow blocks, and its consumption is approaching saturation; therefore, it is necessary to expand its applications.

[0003] To this end, Chinese patent document CN108396885A discloses a gypsum mortar composite insulation board exterior wall and its application. This exterior wall includes structural steel, steel mesh, high-efficiency insulation board, a first wall sprayed mortar layer, a second wall sprayed mortar layer, polymer waterproof and crack-resistant mortar, and anti-corrosion mesh. The structural steel has a steel mesh installed on one or both sides and fixed to the beam-column structure, located inside the high-efficiency insulation board, the first wall sprayed mortar layer, and the second wall sprayed mortar layer, forming an integrated structure. The high-efficiency insulation board is installed on the structural steel or steel mesh and is covered and protected by the inner first wall sprayed mortar layer and the outer second wall sprayed mortar layer. The polymer waterproof and crack-resistant mortar is applied to the outer side of the second wall sprayed mortar layer. This type of gypsum-insulated mortar exterior wall composite structure uses all materials that are prefabricated in the factory and transported to the site for installation, or are prefabricated into panels and transported to the site for assembly. This solves the problems of traditional masonry materials being heavy, having poor seismic performance, and slow construction speed, as well as the high price, transportation difficulties, and installation challenges of prefabricated large panels.

[0004] However, the exterior wall has the following shortcomings:

[0005] First, phosphogypsum is only used in wall spraying mortar and gypsum insulation mortar, and the consumption of phosphogypsum is small;

[0006] Secondly, due to material differences, the polymer waterproof and crack-resistant mortar and the second wall sprayed sand layer have a weak bond and inconsistent thermal expansion coefficients, which easily leads to cracking or even detachment of the polymer waterproof and crack-resistant mortar. In addition, since the phosphogypsum used in the second wall sprayed sand layer is an air-hardening material with a low softening coefficient, it will expand after absorbing water, which will aggravate the cracking and detachment of the polymer waterproof and crack-resistant mortar, ultimately leading to the gradual destruction of both the polymer waterproof and crack-resistant mortar and the second wall sprayed sand layer. Summary of the Invention

[0007] To solve the above-mentioned technical problems, this utility model provides a thermal insulation and decorative integrated phosphogypsum exterior wall structure.

[0008] This utility model is achieved through the following technical solution:

[0009] A thermal insulation and decorative integrated phosphogypsum exterior wall structure includes a phosphogypsum exterior wall and a moisture-proof and thermal insulation decorative layer, wherein the moisture-proof and thermal insulation decorative layer is connected to the exterior wall surface of the phosphogypsum exterior wall through multiple connecting components.

[0010] The moisture-proof and heat-insulating decorative layer comprises several integrated moisture-proof and heat-insulating decorative panels assembled together.

[0011] The lower end of the moisture-proof, heat-insulating, and decorative integrated panel is recessed inward along its length to form a groove, and the upper end is protruding outward along its length to form a strip, and the shape and size of the strip are adapted to the shape and size of the groove.

[0012] The upper end of the moisture-proof, heat-insulating, and decorative integrated panel has a connecting plate along its length on one side of the card strip, and the side of the connecting plate near the phosphogypsum exterior wall is coplanar with the side of the moisture-proof, heat-insulating, and decorative integrated panel near the phosphogypsum exterior wall.

[0013] The moisture-proof, heat-insulating, and decorative integrated panel includes a flame-retardant insulation board and a metal plate encapsulated on the outer surface of the flame-retardant insulation board.

[0014] The moisture-proof, heat-insulating, and decorative integrated panel has an aluminum foil protective layer on the side near the phosphogypsum exterior wall for moisture-proof and heat insulation.

[0015] The flame-retardant insulation board is a high-density polyurethane foam board that has undergone flame-retardant treatment.

[0016] The metal plate surface on the side of the moisture-proof, heat-insulating, and decorative integrated panel away from the phosphogypsum exterior wall is formed by pressing to create an embossed finish, and a coating is applied to the embossed finish.

[0017] The connecting assembly includes a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixed inside the phosphogypsum exterior wall, and one end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer and is connected to the plastic expansion tube.

[0018] The inner wall surface of the phosphogypsum exterior wall is provided with a phosphogypsum plaster layer, and a decorative layer is provided on the phosphogypsum plaster layer.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. The phosphogypsum exterior wall is mainly constructed using phosphogypsum blocks, which significantly increases the amount and consumption of phosphogypsum, making good use of waste and protecting the environment.

[0021] 2. The moisture-proof and heat-insulating decorative layer is connected to the exterior wall surface of the phosphogypsum exterior wall through multiple connecting components. The connection strength is high and the connection is firm, making the moisture-proof and heat-insulating decorative layer not easy to loosen.

[0022] 3. The moisture-proof and heat-insulating decorative layer is assembled from multiple integrated moisture-proof and heat-insulating decorative panels. This requires less skill from construction workers, resulting in high construction efficiency and environmental friendliness. Construction and material costs are lower than existing exterior walls plastered with cement mortar and then painted, or those tiled or dry-hung stone. Compared to traditional layered construction methods, the construction period for exterior wall structures can be shortened by 2 / 3. Furthermore, the integrated moisture-proof and heat-insulating decorative panel eliminates problems such as water absorption and expansion, hollowing and cracking, and easy fading. It provides excellent moisture-proof and heat-insulating effects, solving the problem of poor waterproof and moisture-proof performance of phosphogypsum building materials. It effectively protects the phosphogypsum exterior wall located on its inner side, extending the service life of the phosphogypsum exterior wall. In contrast, cement mortar is prone to deformation and cracking under large temperature differences between day and night, affecting the wall's aesthetics and waterproofing.

[0023] 4. The slots and strips work together to position the upper and lower layers of integrated moisture-proof and thermal insulation decorative panels, improving the construction speed and efficiency of the moisture-proof and thermal insulation decorative layer. This ensures that the surface of the assembled moisture-proof and thermal insulation decorative layer is flat, aesthetically pleasing, durable, and has good verticality. In contrast, traditional cement mortar plastering combined with exterior wall paint results in poor flatness and verticality due to the impact of high-altitude operations and worker skill levels, affecting the overall decorative effect of the exterior wall. Furthermore, cement mortar is generally mixed manually on-site, leading to significant variations in mix proportions and difficulty in guaranteeing strength, affecting project quality. In severe cases, cracking or even detachment can occur, seriously impacting aesthetics and posing a safety hazard of falling debris injuring pedestrians. Additionally, the slots and strips also prevent water seepage at the joints between the upper and lower layers of integrated moisture-proof and thermal insulation decorative panels.

[0024] 5. The appearance of the moisture-proof and heat-insulating decorative integrated panel is improved by using embossed finish and coating decoration. Compared with traditional exterior walls with tiled walls or cement mortar and paint, this decoration method does not pose a safety risk of falling from heights, nor does it have a series of problems such as water absorption and expansion, hollow cracking, and easy fading.

[0025] 6. The interior wall surface of the phosphogypsum exterior wall is plastered with phosphogypsum, which further increases the amount of phosphogypsum used in the thermal insulation and decorative integrated phosphogypsum exterior wall structure. Moreover, since both the phosphogypsum plaster layer and the phosphogypsum exterior wall are made of phosphogypsum, the two have a strong bond and the phosphogypsum plaster layer is not easy to fall off. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of the thermal insulation and decorative integrated phosphogypsum exterior wall structure of this utility model.

[0027] Figure 2 for Figure 1 Sectional view along AA;

[0028] Figure 3 This is a structural schematic diagram of the moisture-proof, heat-insulating, and decorative integrated panel of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the starting component of this utility model;

[0030] Figure 5 This is a structural schematic diagram of the sealing member of this utility model;

[0031] Figure 6 This is a structural schematic diagram of the door and window package of this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of component F of this utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the center seam strip of this utility model.

[0034] In the diagram: 1-Phosphogypsum exterior wall, 10-Structural column, 11-Ring beam, 12-Phosphogypsum block wall, 2-Moisture-proof and heat-insulating decorative layer, 20-Moisture-proof, heat-insulating and decorative integrated panel, 200-Connecting plate, 201-Clamping strip, 202-Metal plate, 203-Aluminum foil protective layer, 204-Flame-retardant insulation board, 205-Clamping groove, 21-Starting component, 22-Finishing component, 23-Door and window cover, 24-F-piece, 25-Middle seam strip, 3-Phosphogypsum plaster layer, 4-Decorative layer. Detailed Implementation

[0035] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0036] like Figures 1 to 8 As shown, the present invention provides a thermal insulation and decorative integrated phosphogypsum exterior wall structure, comprising a phosphogypsum exterior wall 1 and a moisture-proof and thermal insulation decorative layer 2, wherein the moisture-proof and thermal insulation decorative layer 2 is connected to the exterior wall surface of the phosphogypsum exterior wall 1 through multiple connecting components.

[0037] The moisture-proof and heat-insulating decorative layer 2 comprises multiple integrated moisture-proof and heat-insulating decorative panels 20 assembled together. In use, the phosphogypsum exterior wall 1 is primarily constructed using phosphogypsum blocks, significantly reducing the amount and consumption of phosphogypsum, thus utilizing waste and protecting the environment. The moisture-proof and heat-insulating decorative layer 2 is connected to the exterior wall surface of the phosphogypsum exterior wall 1 via multiple connecting components, resulting in strong and secure connections that prevent the moisture-proof and heat-insulating decorative layer 2 from easily loosening. The moisture-proof and heat-insulating decorative layer 2 is assembled from multiple integrated moisture-proof and heat-insulating decorative panels 20. This requires less skill from construction workers, resulting in high construction efficiency and environmental friendliness. Construction and material costs are lower than existing exterior walls plastered with cement mortar and then painted, or those tiled or dry-hung stone. Compared to traditional layered construction methods, the construction period for exterior wall structures can be shortened by two-thirds. Furthermore, the integrated moisture-proof and heat-insulating decorative panel 20 does not suffer from water absorption and expansion, hollowing and cracking, or easy fading. It offers excellent moisture-proof and heat-insulating effects, solving the problem of poor waterproof and moisture-proof performance of phosphogypsum building materials. It effectively protects the phosphogypsum exterior wall 1 located inside, extending its service life. In contrast, cement mortar is prone to deformation and cracking under large temperature differences between day and night, affecting the wall's aesthetics and waterproofing. Overall, the integrated moisture-proof and heat-insulating decorative panel 20 provides moisture-proof, heat-insulating, decorative, and protective functions for the phosphogypsum exterior wall 1.

[0038] The lower end of the moisture-proof, heat-insulating, and decorative integrated panel 20 is recessed inward along its length to form a groove 205, and the upper end is protruding outward along its length to form a strip 201, and the shape and size of the strip 201 are adapted to the shape and size of the groove 205.

[0039] The upper end of the moisture-proof, heat-insulating and decorative integrated panel 20 is provided with a connecting plate 200 along its length on one side of the clip 201, and the side of the connecting plate 200 near the phosphogypsum exterior wall 1 is coplanar with the side of the moisture-proof, heat-insulating and decorative integrated panel 20 near the phosphogypsum exterior wall 1.

[0040] The moisture-proof, heat-insulating, and decorative integrated panel 20 includes a flame-retardant heat-insulating board 204 and a metal plate 202 encapsulated on the outer surface of the flame-retardant heat-insulating board 204.

[0041] The moisture-proof, heat-insulating, and decorative integrated panel 20 has an aluminum foil protective layer 203 on the side near the phosphogypsum exterior wall 1 for moisture-proofing and heat insulation. This gives the moisture-proof, heat-insulating, and decorative integrated panel 20 flame-retardant, heat-insulating, moisture-proof, and heat-insulating functions. During use, the metal plate 202 must have good rust resistance.

[0042] The flame-retardant insulation board 204 is a high-density polyurethane foam board that has undergone flame-retardant treatment.

[0043] The surface of the metal plate 202 on the side of the integrated moisture-proof and heat-insulating decorative panel 20 away from the phosphogypsum exterior wall 1 is formed by pressing to create an embossed finish, and a coating is applied to the embossed finish. By decorating the outer surface of the integrated moisture-proof and heat-insulating decorative panel 20 with the embossed finish and coating, the aesthetics of the moisture-proof and heat-insulating decorative layer 2 are improved. Compared with traditional exterior walls with tiled walls or cement mortar and paint, this decorative method does not pose a safety risk of falling from heights, nor does it have a series of problems such as water absorption and expansion, hollow cracking, and easy fading.

[0044] The connecting assembly includes a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixed inside the phosphogypsum exterior wall 1, and one end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer 2 and is connected to the plastic expansion tube.

[0045] The inner wall surface of the phosphogypsum exterior wall 1 is provided with a phosphogypsum plaster layer 3, and a decorative layer 4 is provided on the phosphogypsum plaster layer 3. The use of phosphogypsum for plastering the inner wall surface of the phosphogypsum exterior wall 1 further increases the amount of phosphogypsum used in the integrated thermal insulation and decorative phosphogypsum exterior wall structure. Moreover, since both the phosphogypsum plaster layer 3 and the phosphogypsum exterior wall 1 are made of phosphogypsum, the two have a strong bond and the phosphogypsum plaster layer 3 is not easy to fall off.

[0046] A construction method for an integrated phosphogypsum exterior wall structure with thermal insulation and decoration includes the following steps:

[0047] Step 1: Complete the construction of the phosphogypsum exterior wall 1.

[0048] Step 2: Complete the construction of the moisture-proof and heat-insulating decorative layer 2. The construction of the moisture-proof and heat-insulating decorative layer 2 includes the following steps.

[0049] Step 1, Installation of starting component 21: Install and fix the starting component 21 to the phosphogypsum exterior wall 1 and / or concrete foundation using multiple connecting components.

[0050] Step 2, Installation of the bottom layer moisture-proof and heat-insulating decorative integrated panel 20: Insert the end of the bottom layer moisture-proof and heat-insulating decorative integrated panel 20 with the slot 205 into the starting part 21, and connect the lower part of the moisture-proof and heat-insulating decorative integrated panel 20 to the phosphogypsum exterior wall 1 through multiple connecting components. Then connect the connecting plate 200 on the moisture-proof and heat-insulating decorative integrated panel 20 to the phosphogypsum exterior wall 1 through multiple connecting components.

[0051] Step 3: Installation of other layers of moisture-proof, heat-insulating and decorative integrated panels 20: Attach the slot 205 at the bottom of the second layer moisture-proof, heat-insulating and decorative integrated panel 20 to the strip 201 at the top of the bottom layer moisture-proof, heat-insulating and decorative integrated panel 20, and connect the connecting plate 200 on the second layer moisture-proof, heat-insulating and decorative integrated panel 20 to the phosphogypsum exterior wall 1 using multiple connecting components. This completes the installation of the second layer moisture-proof, heat-insulating and decorative integrated panel 20. Continue this process, installing each layer of moisture-proof, heat-insulating and decorative integrated panel 20 from bottom to top. The slot 205, in conjunction with the strip 201, positions the upper and lower integrated moisture-proof and thermal insulation decorative panels 20, improving the construction speed and efficiency of the moisture-proof and thermal insulation decorative layer 2. It also ensures that the surface of the moisture-proof and thermal insulation decorative layer 2 formed by assembling multiple integrated panels 20 is smooth, aesthetically pleasing, durable, and has good verticality. In contrast, traditional cement mortar plastering combined with exterior wall paint results in poor smoothness and verticality due to the impact of high-altitude operations and worker skill levels, affecting the overall decorative effect of the exterior wall. Furthermore, cement mortar is generally mixed manually on-site, leading to significant variations in mix proportions and difficulty in guaranteeing strength, thus affecting project quality. In severe cases, cracking or even detachment can occur, seriously impacting aesthetics and posing a safety hazard of falling debris injuring pedestrians. Additionally, the slot 205, in conjunction with the strip 201, also prevents water seepage at the joints of the upper and lower integrated moisture-proof and thermal insulation decorative panels 20. Except for the bottom layer of moisture-proof, heat-insulating and decorative integrated panel 20, before assembling other layers of moisture-proof, heat-insulating and decorative integrated panel 20, apply sealant to the surface of the slot 205 of the moisture-proof, heat-insulating and decorative integrated panel 20 to further improve the seepage prevention ability at the joint of the upper and lower layers of moisture-proof, heat-insulating and decorative integrated panel 20.

[0052] Step 4, Installation of finishing piece 22: Fix the base plate of finishing piece 22 to the phosphogypsum exterior wall 1 through multiple connecting components, and fix the upper end of the top moisture-proof and heat-insulating decorative integrated panel 20 into the finishing piece 22.

[0053] Step 5: Installation of door and window trim and opening lines: Install door and window package 23 and F-piece 24 with structural adhesive, and fasten door and window package 23 and F-piece 24 to the corresponding moisture-proof and heat-insulating decorative integrated panel 20.

[0054] Step 6: Sealing the installation joints: Sealing is applied to the installation joints between the integrated moisture-proof and thermal insulation decorative panels 20, between the integrated moisture-proof and thermal insulation decorative panels 20 and the structural columns 10 of the phosphogypsum exterior wall 1, between the integrated moisture-proof and thermal insulation decorative panels 20 and the starting components 21, finishing components 22, door and window covers 23 or F-components 24, between the starting component 21 and the concrete foundation, between the finishing component 22 and the ring beam 11 of the phosphogypsum exterior wall 1, and between the door and window covers 23 and F-components 24 and the door and window frames. During use, all installation joints are sealed to improve the moisture-proof and seepage-proof capabilities of the moisture-proof and thermal insulation decorative layer 2.

[0055] Step 3: Apply phosphogypsum plaster layer 3 and decorative layer 4 sequentially on the inner wall surface of phosphogypsum exterior wall 1.

[0056] Before constructing the phosphogypsum exterior wall 1, familiarize yourself with the drawings and prepare the relevant materials, and then position and lay out the phosphogypsum exterior wall 1.

[0057] The construction of the phosphogypsum exterior wall 1 in step one includes the following steps:

[0058] Step A: Construct the lower waterproof and moisture-proof layer using cement bricks or concrete with reverse cutting.

[0059] Step B: Construct the phosphogypsum block wall 12 on the lower waterproof and moisture-proof layer, and reserve the pouring positions for the structural column 10 and the ring beam 11. At the same time, complete the installation of tie bars or tie plates during the construction of the phosphogypsum block wall 12, and conduct pull-out tests on the tie bars or tie plates.

[0060] Step C: Cast the structural columns 10 and ring beams 11 to obtain the phosphogypsum exterior wall 1.

[0061] In step two, the spacing between multiple connecting components installed at equal elevations shall not exceed 600mm. The diameter of the plastic expansion tube in the connecting component shall not be less than 8mm, and the diameter of the galvanized screw shall not be less than 5mm. Before use, the galvanized screw shall be coated with sealant. Ensure that the moisture-proof and heat-insulating decorative layer 2 is firmly connected to the phosphogypsum exterior wall 1 via the connecting components.

[0062] In step two, a center seam strip 25 is installed at the joint of two adjacent moisture-proof, heat-insulating, and decorative integrated panels 20 on the same layer. During use, the starting component 21, finishing component 22, door and window cover 23, F-piece 24, and center seam strip 25 are made of aluminum alloy.

[0063] The method of sequentially applying the phosphogypsum plaster layer 3 and the decorative layer 4 to the inner wall surface of the phosphogypsum exterior wall 1 in step three includes the following steps:

[0064] Step a: Apply a layer of plaster to the inner wall surface of the phosphogypsum exterior wall 1, and press alkali-resistant fiberglass mesh into the plaster to form a phosphogypsum plaster layer 3, with a thickness of 3mm to 5mm. The performance indicators of the plaster layer are shown in Table 1.

[0065] Table 1 Performance Indicators of Surface Plaster

[0066]

[0067] The performance indicators of alkali-resistant glass fiber mesh are shown in Table 2.

[0068] Table 2 Performance Indicators of Alkali-Resistant Glass Fiber Mesh

[0069]

[0070] Step b: Apply latex paint to the phosphogypsum plaster layer 3, or paste wallpaper on the phosphogypsum plaster layer 3 to form a decorative layer 4.

[0071] The construction steps of this utility model are shown in the following flowchart:

[0072]

Claims

1. A thermal insulation and decorative integrated phosphogypsum exterior wall structure, characterized in that: It includes a phosphogypsum exterior wall (1) and a moisture-proof and heat-insulating decorative layer (2), wherein the moisture-proof and heat-insulating decorative layer (2) is connected to the exterior wall surface of the phosphogypsum exterior wall (1) through multiple connecting components; The moisture-proof and heat-insulating decorative layer (2) includes several moisture-proof and heat-insulating decorative integrated panels (20) assembled together.

2. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 1, characterized in that: The lower end of the moisture-proof and heat-insulating decorative integrated panel (20) is recessed inward along its length to form a groove (205), and the upper end is protruding outward along its length to form a strip (201), and the shape and size of the strip (201) are adapted to the shape and size of the groove (205).

3. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 2, characterized in that: The upper end of the moisture-proof and heat-insulating decorative integrated panel (20) is provided with a connecting plate (200) along its length on one side of the card strip (201), and the side of the connecting plate (200) near the phosphogypsum exterior wall (1) is coplanar with the side of the moisture-proof and heat-insulating decorative integrated panel (20) near the phosphogypsum exterior wall (1).

4. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 1, characterized in that: The moisture-proof, heat-insulating, and decorative integrated panel (20) includes a flame-retardant heat-insulating board (204) and a metal plate (202) encapsulated on the outer surface of the flame-retardant heat-insulating board (204); A moisture-proof and heat-insulating decorative integrated panel (20) has an aluminum foil protective layer (203) on the side near the phosphogypsum exterior wall (1) for moisture-proof and heat-insulating purposes.

5. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 4, characterized in that: The flame-retardant insulation board (204) is a high-density polyurethane foam board that has undergone flame-retardant treatment.

6. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 4, characterized in that: The surface of the metal plate (202) on the side of the moisture-proof, heat-insulating and decorative integrated panel (20) away from the phosphogypsum exterior wall (1) is formed by pressing to create an embossed finish, and a coating is provided on the embossed finish.

7. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 1, characterized in that: The connecting assembly includes a plastic expansion tube and a galvanized screw. The plastic expansion tube is fixed inside the phosphogypsum exterior wall (1), and one end of the galvanized screw passes through the moisture-proof and heat-insulating decorative layer (2) and is connected to the plastic expansion tube.

8. The thermal insulation and decorative integrated phosphogypsum exterior wall structure as described in claim 1, characterized in that: The inner wall surface of the phosphogypsum exterior wall (1) is provided with a phosphogypsum plaster layer (3), and a decorative layer (4) is provided on the phosphogypsum plaster layer (3).

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