Passive external wall insulation structure and construction method

Abstract

The application discloses a passive external wall heat preservation structure and a construction method, and belongs to the technical field of external wall heat preservation structures. The application comprises a wall body, a graphene polystyrene board, a splicing assembly and a galvanized steel mesh, and further comprises that the graphene polystyrene board is fixedly arranged on the wall body, and the galvanized steel mesh is fixedly arranged on both sides of the graphene polystyrene board through the splicing assembly. The application solves the problems that the existing heat preservation board needs to use a connecting structure to fix the steel mesh, which leads to high cost, complicated operation and damage to the integrity of the heat preservation board due to the penetration of the connecting structure through the heat preservation board, and easily reduces the heat insulation performance of the heat preservation board, and the existing heat preservation board is arranged in a tongue-and-groove mode, so that the splicing joint is not tight and simultaneously easily causes the reduction of the heat insulation performance of the heat preservation layer. Therefore, the passive external wall heat preservation structure and the construction method are provided, the above defects are overcome, the heat insulation performance of the heat preservation layer is improved, and the "seamless" installation of the heat preservation layer is simultaneously simplified.

Description

Technical Field

[0001] This invention relates to the field of external wall insulation structure technology, and more specifically, to a passive external wall insulation structure and construction method. Background Technology

[0002] Low-energy buildings have quickly become widespread due to their superior performance-to-price ratio. As the demand for environmental protection, energy conservation, and carbon neutrality becomes more urgent, passive energy-saving buildings have rapidly gained attention and developed.

[0003] To better promote the achievement of my country's carbon peak and carbon neutrality goals, my country has also put forward higher requirements in the field of building energy conservation. The advantages of passive buildings in building energy conservation are obvious, so my country is currently vigorously advocating and promoting passive buildings. However, at present, although the traditional external wall insulation thin plastering system adopted by passive buildings has good thermal insulation performance, the wall, as the main component of passive buildings, is very different from the traditional wall structure. First, it must have a sufficiently thick insulation layer, generally greater than 200mm. Second, it is required that the wall is free of thermal bridges.

[0004] In existing external wall insulation structures, graphene polystyrene boards are generally used for insulation. Two discs on each side of the graphene polystyrene board are used to fix the reinforcing mesh. The two discs are connected by a thermal break structure, which uses an outer sleeve of insulating material and an inner metal connector. This connection structure for installing the reinforcing mesh requires the insulation board to be passed through to fix the mesh, resulting in a high cost. Furthermore, the insulation board is generally a single-layer or multi-layer structure. Multi-layer structures require staggered installation and have complex procedures; the more layers, the easier it is for the insulation board to detach (gaps exist between layers, which expand easily when heated). Therefore, single-layer structures are often preferred on-site. However, single-layer graphene polystyrene boards have gaps during installation and generally require tongue-and-groove joints. If flat end-face joints are used, the passive building's thermal insulation performance is easily affected. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve

[0006] To address the shortcomings and deficiencies of existing technologies, this invention provides a passive external wall insulation structure and construction method. This invention solves the problems of existing insulation boards requiring connecting structures to fix the reinforcing mesh, which leads to high costs, complex operations, and the connection structure penetrating the insulation board, thus compromising its integrity and reducing its thermal insulation performance. Furthermore, the tongue-and-groove joints in existing insulation boards result in loose seams, further reducing the thermal insulation performance of the insulation layer. Therefore, this invention proposes a passive external wall insulation structure and construction method that overcomes these shortcomings, improves the thermal insulation performance of the insulation layer, and simplifies the installation process to achieve a "seamless" installation of the insulation layer.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0009] The present invention discloses a passive external wall insulation structure and construction method, comprising a wall and further comprising:

[0010] Graphene polystyrene boards are fixedly installed on the wall.

[0011] The splicing assembly is fixedly installed on the side of the graphene polystyrene board opposite to the wall and / or the side away from the wall. The splicing assembly is suitable for seamless installation of the graphene polystyrene board. The splicing assembly includes a fixing body bonded to the graphene polystyrene board. The fixing bodies on two adjacent graphene polystyrene boards are fixedly connected by a connector and are suitable for applying pressure to the splice seam of the two adjacent graphene polystyrene boards. The connector is provided with a pressure-applying part and a limiting part. The pressure-applying part is suitable for applying lateral pressure to the two fixing bodies, and the limiting part is suitable for limiting and fixing the free end of the fixing body.

[0012] Galvanized steel mesh is fixedly installed on both sides of the graphene polystyrene board using splicing components.

[0013] Furthermore, the fixing body includes an L-shaped plate and a limiting body integrally formed on the free end of the L-shaped plate. A limiting groove is provided on the back side of the L-shaped plate on two adjacent graphene polystyrene plates. The limiting body is disposed inside the connecting body and is adapted to the limiting part.

[0014] Furthermore, the connector has a tapered portion on one side relative to the graphene polystyrene plate, a pressure-applying portion is provided at the tapered portion and a stiffening portion is provided on the side of the pressure-applying portion facing away from the L-shaped plate, the pressure-applying portion is adapted to the limiting groove, and the limiting portion includes a body, a stop body on one side of the body relative to the graphene polystyrene plate and a baffle body installed at the end of the body and the stop body, and the side of the stop body away from the body gradually approaches the inner bottom of the connector.

[0015] Furthermore, the side of the connector facing away from the graphene polystyrene board is provided with a connecting structure, which is suitable for snap-fit ​​installation of galvanized steel mesh.

[0016] Furthermore, the inner wall of the connecting body is provided with a first anti-retraction structure, and the outer wall of the limiting body is provided with a second anti-retraction structure. The first anti-retraction structure and the second anti-retraction structure are compatible and suitable for preventing the blocking body and the limiting body from separating.

[0017] Furthermore, the graphene polystyrene board has a tongue and groove joint on its side and a protrusion adapted to the tongue and groove joint. The tongue and groove joint is equipped with a claw and a locking structure suitable for locking the claw. The protrusion is provided with a groove adapted to the claw. The claw is adapted to clamp the groove of the protrusion when the protrusion and the tongue and groove joint are installed together and the claw is locked by the locking structure.

[0018] Furthermore, the locking structure includes a mounting groove installed on the inner wall of the tongue and groove, a spring installed in the mounting groove, and a locking body extending partially into the tongue and groove at the end of the spring. The locking body is a wedge-shaped structure.

[0019] Furthermore, the tongue and groove are provided with guide groove one, guide groove two and reset member inside. The gripper is installed in guide groove one and guide groove two by two pins. Guide groove one is provided with guide part and linear part. The guide part is adapted to match the gripper and the groove. Guide groove two and linear part are arranged in parallel and are adapted to linear conveying after gripping the gripper. The side of the gripper facing away from the protrusion is provided with locking groove adapted to the locking body. The two ends of the reset member are connected to the gripper and the inner wall of the tongue and groove respectively.

[0020] Furthermore, when the two pins are located at the bottom of guide groove one and guide groove two respectively, and when the two pins are located at the top of guide groove one and guide groove two respectively, the reset member is in a stretched state.

[0021] A passive external wall insulation structure and its construction method, the construction steps are as follows:

[0022] First, graphene polystyrene boards are customized at the processing plant and numbered according to the designed installation positions. Waterproof and weather-resistant adhesive is then used to install and fix the boards on both sides near the outer edge.

[0023] Secondly, after the steel bars of the wall are tied on site, the graphene polystyrene boards with numbering treatment are assembled on site through the connector to form at least two rows and two columns of graphene polystyrene board unit structure. When two graphene polystyrene boards are assembled, when the protrusion is installed into the tongue and groove, the claw will be acted on by the protrusion, causing one end of the claw to rotate along the guide part until the two pins are respectively located in the guide groove and the linear part. The claw will adapt to the groove to complete the clamping of the protrusion. During this process, the reset part will be further stretched. Then the reset part will actively drive the protrusion and the claw to move into the depth of the tongue and groove. During the movement, the claw will act on the locking body to compress the spring into the installation groove until the locking body and the locking groove adapt to complete the locking effect of the claw. Since the protrusion is always in a state of being pulled into the tongue and groove before the claw locks, the root of the connection between the protrusion and the graphene polystyrene board and the two graphene polystyrene boards are in a tight abutting state.

[0024] Secondly, when assembling two graphene polystyrene boards that are horizontally or vertically assembled, first expand the constricted part of the connector outward, then insert it horizontally or vertically into the outside of the two corresponding fixing bodies until one end of the limiting body and the baffle body are abutted and fixed. Then pull the connector away from the graphene polystyrene board to fit the pressure part into the limiting groove. During the fitting process between the pressure part and the limiting groove, the limiting body will bend towards the side closer to the limiting part. Finally, the limiting body will hook onto the stop body on the limiting part. Then install the galvanized steel mesh on the corresponding connector.

[0025] Next, the assembled graphene polystyrene board unit structure is hoisted. Galvanized steel mesh is added to the outside of the splicing point between the hoisted graphene polystyrene board units. The added galvanized steel mesh is tied to the galvanized steel mesh on the two graphene polystyrene board units with tie wire. The galvanized steel mesh on the inside does not need to be added. The galvanized steel mesh is directly tied to the wall.

[0026] Finally, install the inner and outer support formwork, and pour concrete between the support formwork on both sides of the graphene polystyrene board and the wall. Once the concrete has solidified, the formwork can be removed.

[0027] 3. Beneficial effects

[0028] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0029] This invention employs a splicing assembly to assemble graphene polystyrene boards. The splicing assembly utilizes fixing and connecting elements to join two graphene polystyrene boards and applies pressure to the joint, ensuring a tight seal and eliminating the previous problem of substandard joint quality. The connecting element is suitable for installing galvanized steel mesh, which allows the galvanized steel mesh and graphene insulation board to be assembled into a single unit. The inner galvanized steel mesh and the wall reinforcement are secured with binding wire. The assembly of the fixing and connecting elements involves applying pressure to the limiting grooves on the L-shaped boards using a pressure-applying part, thus securing the two L-shaped boards. Simultaneously, the two limiting elements are bent towards the center of the connecting element, forming a hook with the stopping element of the limiting part. Due to the compatibility of the first anti-retraction structure inside the connecting element and the second anti-retraction structure outside the limiting element, the connecting and fixing elements complete the pressure application to the joint of the two graphene polystyrene boards, ensuring structural stability. Tongue and groove joints and protrusions are set on the graphene polystyrene board. The tongue and groove joints and protrusions are used to achieve automatic splicing and locking under the action of the clamp and locking structure. At the same time, after installation, there is a reset member in a tensile state along the length of the protrusion to pull the two graphene polystyrene boards laterally, thereby improving the tightness of the splice seam. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the external wall insulation structure in one embodiment of the present invention;

[0031] Figure 2 This is a diagram showing the working condition of the fixing body and connecting body after installation according to the present invention;

[0032] Figure 3 This is a diagram showing the working condition of the fixing body and connecting body before installation of the present invention;

[0033] Figure 4 This is a schematic diagram of the overall structure of the connecting structure on the connector of the present invention;

[0034] Figure 5 This is a cross-sectional view of the overall structure of the connecting structure on the connector body of the present invention;

[0035] Figure 6 This is a diagram showing the connection structure and steel bar connection operation on the connector body of the present invention;

[0036] Figure 7 This is a schematic diagram of the overall structure of the external wall insulation structure in one embodiment of the present invention;

[0037] Figure 8 for Figure 7 A magnified view of a section at point A in the middle;

[0038] Figure 9 This is a schematic diagram of the structure of the two graphene insulation boards before installation in this invention;

[0039] Figure 10 for Figure 9 A magnified view of a section at point B in the middle;

[0040] Figure 11 for Figure 3 Schematic diagrams of the non-operating conditions of anti-retraction structure one and anti-retraction structure two.

[0041] In the picture:

[0042] 10. Wall; 20. Graphene polystyrene board; 21. Tongue and groove; 22. Protrusion; 23. Gripper; 24. Groove; 25. Mounting groove; 26. Spring; 27. Locking body; 28. Guide groove one; 281. Guide part; 282. Linear part; 29. ​​Guide groove two; 210. Reset part; 30. Fixing body; 301. Mounting groove; 302. Stop; 303. Slide groove; 304. Spring 305. Spring body; 306. Slider; 307. Stop block; 31. L-shaped plate; 32. Limiting body; 33. Limiting groove; 40. Connecting body; 41. Pressing part; 42. Limiting part; 421. Body; 422. Stopping body; 423. Baffle body; 43. Closing part; 44. Reinforcing part; 45. Connecting structure; 46. Anti-reverse structure one; 47. Anti-reverse structure two; 50. Galvanized steel mesh. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0044] Example 1

[0045] from Figure 1-11 As can be seen, the passive external wall insulation structure and construction method of this embodiment includes a wall 10, and also includes:

[0046] Graphene polystyrene board 20 is fixedly installed on wall 10;

[0047] The splicing assembly is fixedly installed on the side of the graphene polystyrene board 20 opposite to the wall 10 and / or the side away from the wall 10. The splicing assembly is suitable for seamless installation of the graphene polystyrene board 20. The splicing assembly includes a fixing body 30 bonded to the graphene polystyrene board 20. The fixing bodies 30 on two adjacent graphene polystyrene boards 20 are fixedly connected by a connector 40 and are suitable for applying pressure to the splice seam of the two adjacent graphene polystyrene boards 20. The connector 40 is provided with a pressure applying part 41 and a limiting part 42. The pressure applying part 41 is suitable for applying lateral pressure to the two fixing bodies 30, and the limiting part 42 is suitable for limiting and fixing the free end of the fixing body 30.

[0048] The fixing body 30 includes an L-shaped plate 31 and a limiting body 32 integrally formed on the free end of the L-shaped plate 31. A limiting groove 33 is provided on the opposite side of the L-shaped plate 31 on two adjacent graphene polystyrene plates 20. The limiting body 32 is disposed inside the connecting body 40 and is adapted to the limiting part 42.

[0049] The connector 40 has a tapered portion 43 on one side relative to the graphene polystyrene plate 20. The pressure part 41 is located at the tapered portion and the side of the pressure part 41 facing away from the L-shaped plate 31 has a stiffening part 44. The pressure part 41 is adapted to the limiting groove 33. The limiting part 42 includes a body 421, a stop body 422 on one side of the body 421 relative to the graphene polystyrene plate 20, and a baffle body 423 installed at the ends of the body 421 and the stop body 422. The side of the stop body 422 away from the body 421 gradually approaches the inner bottom of the connector 40.

[0050] Galvanized steel mesh 50 is fixedly arranged on both sides of graphene polystyrene board 20 by splicing components.

[0051] A connecting structure 45 is provided on the side of the connector 40 facing away from the graphene polystyrene board 20. The connecting structure 45 is suitable for snap-fit ​​installation of galvanized steel mesh 50. The galvanized steel mesh 50 located on the inner side is fixed to the steel bars of the wall 10 by binding wire.

[0052] In use, graphene polystyrene boards 20 are custom-made and numbered at the processing plant. During the customization stage, they are installed near the edge of the graphene polystyrene boards 20 using fixing bodies 30 and waterproof and weather-resistant adhesive. After the steel bars of the wall 10 are tied on site, the numbered graphene polystyrene boards 20 are assembled on site using connectors 40 to form at least two rows and two columns of graphene polystyrene board 20 unit structures. When assembling two graphene polystyrene boards 20 horizontally or vertically, the constricted part of the connector 40 is first expanded outward, and then the horizontal... Alternatively, it can be vertically inserted into the outer sides of two corresponding fixed bodies 30 until one end of the limiting body 32 abuts and is fixed to the baffle body 423. Then, the connecting body 40 is pulled away from the graphene polystyrene board 20 to adapt the pressure part 41 into the limiting groove 33. During the adaptation process between the pressure part 41 and the limiting groove 33, the limiting body 32 will bend towards the side closer to the limiting part 42. Finally, the limiting body 32 will hook onto the stop body 422 on the limiting part 42. Then, the galvanized steel mesh 50 is installed on the corresponding connecting body 40, such as... Figures 4 to 6 As shown, the connecting structure 45 is provided with an installation groove 301 and a stop 302 installed at the inlet end of the installation groove 301. The stop 302 can move linearly relative to the connecting body 40 and is provided with a sliding groove 303. A spring body 304 and a slider 305 are installed inside the sliding groove 303. The slider 305 is installed on the connecting body 40 via a rotating shaft, and a torsion spring is installed at the rotation node of the slider 305 and the connecting body 40. The connecting body 40 is provided with a clearance groove and a stop block 306 suitable for limiting the outward rotation angle of the stop 302. When installing the galvanized steel mesh 50, as the galvanized steel mesh 50 is installed into the installation groove 301, it will first gradually squeeze the stop 302, and at the same time, the stop 302 will move in the sliding groove 303. Under the action of the internal spring body 304, its end will move along the outer circle of the steel bar of the steel mesh. The stop 302 will also return to its original position along the outer circle of the steel bar under the action of the spring body 304, thus fixing the galvanized steel mesh 50. The steel bars of the fixed steel mesh will be tightly installed inside the installation groove 301 without shaking. Then, the assembled graphene polystyrene board 20 unit structure is hoisted. Galvanized steel mesh is added to the outside of the splice between the hoisted graphene polystyrene board 20 units, and the galvanized steel mesh on the two graphene polystyrene board 20 units is fixed and tied with wire. The galvanized steel mesh on the inner side does not need to be added. The galvanized steel mesh 50 and the wall 10 can be directly tied together.

[0053] When further implementing the above plan, such as Figure 11As shown, the inner wall of the connecting body 40 is provided with a first anti-retraction structure 46, and the outer wall of the limiting body 32 is provided with a second anti-retraction structure 47. The first anti-retraction structure 46 and the second anti-retraction structure 47 are adapted to each other and are suitable for preventing the stopping body 422 and the limiting body 32 from separating. When the pressure part 41 moves into the limiting groove 33 on the L-shaped plate 31, the first anti-retraction structure 46 and the second anti-retraction structure 47 are adapted to ensure the stability of the stopping body 422 and the limiting body 32, and prevent the connecting body 40 and the fixing body 30 from separating due to the impact of concrete when pouring concrete.

[0054] The graphene polystyrene board 20 has a tongue and groove joint 21 on its side and a protrusion 22 adapted to the tongue and groove joint 21. The tongue and groove joint 21 is equipped with a claw 23 and a locking structure suitable for locking the claw 23. The protrusion 22 is provided with a groove 24 adapted to the claw 23. The claw 23 is adapted to clamp the groove 24 of the protrusion 22 and lock the claw 23 through the locking structure when the protrusion 22 and the tongue and groove joint 21 are installed together.

[0055] The locking structure includes a mounting groove 25 installed on the inner wall of the tongue and groove 21. A spring 26 is installed in the mounting groove 25. The end of the spring 26 abuts against a locking body 27 that extends partially into the tongue and groove 21. The locking body 27 has a wedge-shaped structure.

[0056] The tongue and groove 21 is provided with guide groove 1 28, guide groove 29 and reset member 210. The gripper 23 is installed in guide groove 1 28 and guide groove 29 by two pins. Guide groove 1 28 is provided with guide part 281 and linear part 282. Guide part 281 is adapted to match gripper 23 and groove 24. Guide groove 29 and linear part 282 are arranged in parallel and are adapted to linearly transport after gripping gripper 23. The side of gripper 23 facing away from protrusion 22 is provided with locking groove adapted to locking body 27. The two ends of reset member 210 are connected to gripper 23 and inner wall of tongue and groove 21 respectively.

[0057] When the two pins are located at the bottom of guide groove 1 28 and guide groove 29 respectively, and when the two pins are located at the top of guide groove 1 28 and guide groove 29 respectively, the reset member 210 is in a stretched state.

[0058] When two graphene polystyrene boards 20 are assembled, as the protrusion 22 is installed into the tongue and groove 21, the gripper 23 is rotated along the guide section 281 by the action of the protrusion 22 until the two pins are located in the guide groove 29 and the linear section 282 respectively. The gripper 23 will adapt to the groove 24 to complete the clamping of the protrusion 22. During this process, the reset member 210 will be further stretched. Subsequently, the reset member 210 will drive the protrusion 22 and the gripper 23 to move deeper into the tongue and groove 21. At the same time, during the movement, the gripper 23 will act on the locking body 27 to compress the spring 26 inside the mounting groove 25 until the locking body 27 and the locking groove adapt to complete the locking action of the gripper 23. Since the protrusion 22 is always being pulled into the tongue and groove 21 before the gripper 23, after the gripper 23 completes the locking and the splicing components are used, the splicing seam will approach the "seamless" state described above.

[0059] A passive external wall insulation structure and its construction method, the construction steps are as follows:

[0060] First, graphene polystyrene boards 20 are customized at the processing plant and numbered according to the designed installation positions. Waterproof and weather-resistant fasteners 30 are installed on both sides of the graphene polystyrene boards 20 near the outer edge.

[0061] Secondly, after the steel bars of the wall 10 are tied on site, the numbered graphene polystyrene boards 20 are assembled on site through the connector 40 to form at least two rows and two columns of graphene polystyrene board 20 unit structures. When two graphene polystyrene boards 20 are assembled, when the protrusion 22 is installed into the tongue and groove 21, the gripper 23 is acted upon by the protrusion 22, causing one end of the gripper 23 to rotate along the guide 281 until the two pins are respectively located in the guide groove 29 and the linear part 282. The gripper 23 will then adapt to the groove 24 to complete the clamping of the protrusion 22. The process reset component 210 will be further stretched, and then the reset component 210 will actively drive the protrusion 22 and the gripper 23 to move into the depth of the tongue and groove 21. During the movement, the gripper 23 will act on the locking body 27 to compress the spring 26 inside the mounting groove 25 until the locking body 27 and the locking groove are adapted to complete the locking effect of the gripper 23. Since the protrusion 22 is always in a state of being pulled into the tongue and groove 21 before the gripper 23 locks, the root of the connection between the protrusion 22 and the graphene polystyrene plate 20 and the two graphene polystyrene plates 20 are in a tight abutment state.

[0062] Secondly, when assembling two graphene polystyrene boards 20 that are horizontally or vertically assembled, first expand the constricted part of the connector 40 outward, then insert it horizontally or vertically into the outside of the two corresponding fixing bodies 30 until one end of the limiting body 32 and the baffle body 423 are abutted and fixed. Then pull the connector 40 away from the graphene polystyrene board 20 to adapt the pressure part 41 into the limiting groove 33. During the adaptation process of the pressure part 41 and the limiting groove 33, the limiting body 32 will bend towards the side closer to the limiting part 42. Finally, the limiting body 32 will hook onto the stop body 422 on the limiting part 42. Then install the galvanized steel mesh 50 onto the corresponding connector 40.

[0063] Next, the assembled graphene polystyrene board 20 unit structure is hoisted. Galvanized steel mesh is added to the outside of the splicing point between the hoisted graphene polystyrene board 20 units. The added galvanized steel mesh is fixed and tied to the galvanized steel mesh 50 on the two graphene polystyrene board 20 units with tie wire. The galvanized steel mesh on the inside does not need to be added. The galvanized steel mesh 50 is directly tied to the wall 10.

[0064] Finally, install the inner and outer support formwork, and pour concrete between the support formwork on both sides of the graphene polystyrene board 20 and the wall 10. Once the concrete has solidified, the formwork can be removed.

[0065] This invention addresses the problems of existing insulation boards, which require a connecting structure to fix the steel mesh, resulting in high costs, complex operations, and the connecting structure penetrating the insulation board, thus compromising its integrity and reducing its thermal insulation performance. Furthermore, the tongue-and-groove joints in existing insulation boards lead to loose seams, further reducing the insulation's thermal insulation performance. Therefore, this invention proposes a passive external wall insulation structure and construction method that overcomes these shortcomings, improves the thermal insulation performance of the insulation layer, and simplifies the installation process to achieve a "seamless" installation of the insulation layer.

[0066] This invention employs a splicing assembly to assemble graphene polystyrene boards. The splicing assembly utilizes fixing and connecting elements to join two graphene polystyrene boards and applies pressure to the joint, ensuring a tight seal and eliminating the previous problem of substandard joint quality. The connecting element is suitable for installing galvanized steel mesh, which allows the galvanized steel mesh and graphene insulation board to be assembled into a single unit. The inner galvanized steel mesh and the wall reinforcement are secured with binding wire. The assembly of the fixing and connecting elements involves applying pressure to the limiting grooves on the L-shaped boards using a pressure-applying part, thus securing the two L-shaped boards. Simultaneously, the two limiting elements are bent towards the center of the connecting element, forming a hook with the stopping element of the limiting part. Due to the compatibility of the first anti-retraction structure inside the connecting element and the second anti-retraction structure outside the limiting element, the connecting and fixing elements complete the pressure application to the joint of the two graphene polystyrene boards, ensuring structural stability. Tongue and groove joints and protrusions are set on the graphene polystyrene board. The tongue and groove joints and protrusions are used to achieve automatic splicing and locking under the action of the clamp and locking structure. At the same time, after installation, there is a reset member in a tensile state along the length of the protrusion to pull the two graphene polystyrene boards laterally, thereby improving the tightness of the splice seam.

[0067] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A passive external wall insulation structure, comprising a wall (10), characterized in that: Also includes: Graphene polystyrene board (20) is fixedly installed on the wall (10); The splicing assembly is fixedly installed on the side of the graphene polystyrene board (20) opposite to the wall (10) and / or the side away from the wall (10). The splicing assembly is suitable for seamless installation of the graphene polystyrene board (20). The splicing assembly includes a fixing body (30) bonded to the graphene polystyrene board (20). The fixing bodies (30) on two adjacent graphene polystyrene boards (20) are fixedly connected by a connector (40) and are suitable for pressurizing the splice seam of the two adjacent graphene polystyrene boards (20). The connector (40) is provided with a pressure-applying part (41) and a limiting part (42). The pressure-applying part (41) is suitable for applying lateral pressure to the two fixing bodies (30), and the limiting part (42) is suitable for limiting and fixing the free end of the fixing body (30). Galvanized steel mesh (50) is fixedly arranged on both sides of graphene polystyrene board (20) by splicing components; The graphene polystyrene board (20) has a tongue and groove (21) on its side and a protrusion (22) that matches the tongue and groove (21). The tongue and groove (21) is equipped with a claw (23) and a locking structure suitable for locking the claw (23). The protrusion (22) is provided with a groove (24) that matches the claw (23). The claw (23) is suitable for clamping the groove (24) of the protrusion (22) and locking the claw (23) by the locking structure when the protrusion (22) and the tongue and groove (21) are installed in a matching manner. The locking structure includes a mounting groove (25) installed on the inner wall of the tongue and groove (21), a spring (26) is installed in the mounting groove (25), and the end of the spring (26) abuts against a locking body (27) that extends into the tongue and groove (21). The locking body (27) is a wedge-shaped structure. The tongue and groove (21) is provided with guide groove 1 (28), guide groove 2 (29) and reset member (210). The gripper (23) is installed in guide groove 1 (28) and guide groove 2 (29) by two pins. Guide groove 1 (28) is provided with guide part (281) and linear part (282). Guide part (281) is adapted to match gripper (23) and groove (24). Guide groove 2 (29) and linear part (282) are arranged in parallel and are adapted to linear transport of gripper (23) after gripping. The side of gripper (23) facing away from protrusion (22) is provided with locking groove adapted to locking body (27). The two ends of reset member (210) are connected to gripper (23) and inner wall of tongue and groove (21) respectively. When the two pins are located at the bottom of guide groove one (28) and guide groove two (29) respectively, and when the two pins are located at the top of guide groove one (28) and guide groove two (29) respectively, the reset member (210) is in a stretched state.

2. The passive external wall insulation structure according to claim 1, characterized in that: The fixing body (30) includes an L-shaped plate (31) and a limiting body (32) integrally formed on the free end of the L-shaped plate (31). A limiting groove (33) is provided on the opposite side of the L-shaped plate (31) on two adjacent graphene polystyrene plates (20). The limiting body (32) is located inside the connecting body (40) and is adapted to the limiting part (42).

3. A passive external wall insulation structure according to claim 2, characterized in that: The connector (40) has a tapered portion (43) on one side of the graphene polystyrene plate (20), a pressure part (41) is provided at the tapered portion, and a stiffening part (44) is provided on the side of the pressure part (41) facing away from the L-shaped plate (31). The pressure part (41) is adapted to the limiting groove (33). The limiting part (42) includes a body (421), a stop body (422) is provided on one side of the body (421) facing the graphene polystyrene plate (20), and a baffle body (423) installed at the ends of the body (421) and the stop body (422). The side of the stop body (422) away from the body (421) gradually approaches the inner bottom of the connector (40).

4. A passive external wall insulation structure according to claim 3, characterized in that: The connector (40) has a connecting structure (45) on the side opposite to the graphene polystyrene board (20), and the connecting structure (45) is suitable for snap-fit ​​installation of galvanized steel mesh (50).

5. A passive external wall insulation structure according to claim 4, characterized in that: The inner wall of the connector (40) is provided with a first anti-retraction structure (46), and the outer wall of the limiting body (32) is provided with a second anti-retraction structure (47). The first anti-retraction structure (46) and the second anti-retraction structure (47) are compatible and suitable for preventing the separation of the blocking body (422) and the limiting body (32).

6. The construction method of a passive external wall insulation structure according to claim 5, characterized in that: The construction steps are as follows: First, graphene polystyrene boards (20) are customized at the processing plant and numbered according to the designed installation position. Waterproof and weather-resistant fasteners (30) are installed on both sides of the graphene polystyrene board (20) near the outer edge. Secondly, after the steel bars of the wall (10) are tied on site, the numbered graphene polystyrene boards (20) are assembled on site through the connector (40) to form at least two rows and two columns of graphene polystyrene board (20) unit structures. When two graphene polystyrene boards (20) are assembled, when the protrusion (22) is installed into the tongue and groove (21), the claw (23) will be acted by the protrusion (22) to cause one end of the claw (23) to rotate along the guide (281) until the two pins are located in the guide groove (29) and the linear part (282) respectively. The claw (23) will adapt to the groove (24) to complete the clamping of the protrusion (22). The reset member (210) is further stretched, and then the reset member (210) will actively drive the protrusion (22) and the gripper (23) to move into the depth of the tongue and groove (21). During the movement, the gripper (23) will act on the locking body (27) to compress the spring (26) inside the mounting groove (25) until the locking body (27) and the locking groove are adapted to complete the locking action of the gripper (23). Since the protrusion (22) is always in a state of being pulled into the tongue and groove (21) before the gripper (23) locks, the root of the connection between the protrusion (22) and the graphene polystyrene plate (20) and the two graphene polystyrene plates (20) are in a tight abutment state. Secondly, when assembling two graphene polystyrene boards (20) assembled horizontally or vertically, first expand the constricted part of the connector (40) outward, then insert it horizontally or vertically into the outside of the two corresponding fixing bodies (30) until one end of the limiting body (32) and the baffle body (423) abut and fix it, then pull the connector (40) away from the graphene polystyrene board (20) to adapt the pressure part (41) into the limiting groove (33). During the process of adapting the pressure part (41) and the limiting groove (33), the limiting body (32) will bend towards the side closer to the limiting part (42), and finally the limiting body (32) will hook onto the stop body (422) on the limiting part (42). Then install the galvanized steel mesh (50) onto the corresponding connector (40). Next, the assembled graphene polystyrene board (20) unit structure is hoisted. Galvanized steel mesh is added to the outside of the splicing point between the hoisted graphene polystyrene board (20) units. The added galvanized steel mesh is used to fix and tie the galvanized steel mesh (50) on the two graphene polystyrene board (20) units with tie wire. The galvanized steel mesh located on the inner side does not need to be added. The galvanized steel mesh (50) is directly tied to the wall (10). Finally, install the inner and outer support templates, pour concrete between the support templates on both sides of the graphene polystyrene board (20) and the wall (10), and remove the formwork after the concrete has solidified.

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