Prefabricated wall heat preservation formwork structure
By filling the precast wall with an intermediate filler consisting of an outer insulation layer, sound-absorbing foam, and an inner insulation layer, and connecting them with mounting blocks and expansion bolts, the problem of insufficient insulation performance of precast walls is solved, achieving excellent insulation, sound insulation, waterproofing, and improved strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN XINGYAN CONSTR GRP CO LTD
- Filing Date
- 2025-03-26
- Publication Date
- 2026-05-01
AI Technical Summary
The existing precast walls are inadequate in terms of thermal insulation, which increases the cost of maintaining a constant indoor temperature.
An intermediate filler is used to fill the space between the inner and outer walls. The intermediate filler consists of an outer insulation layer, sound-absorbing foam, and an inner insulation layer, which are fastened together by mounting blocks and expansion bolts. The outer insulation layer is a foamed polyurethane board, and the inner insulation layer is a graphite polystyrene board. Edge steel bars are used to improve the connection strength.
It significantly improves the thermal insulation, sound insulation, and waterproofing performance of precast walls, while enhancing connection strength and service strength, thus improving the practicality of precast walls.
Smart Images

Figure CN224186979U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building materials technology, and in particular to a prefabricated wall insulation mold structure. Background Technology
[0002] Precast walls are an important component in modern architecture, widely used in residential and commercial buildings. They are typically manufactured in advance in a factory and then transported to the construction site for installation. This method not only improves construction efficiency but also effectively reduces construction costs and simplifies on-site construction.
[0003] In the existing technology, precast walls are being used in more and more construction projects as an efficient and economical building solution. However, with the improvement of living standards, the functional requirements of buildings are also gradually increasing. Conventional precast walls only serve as supporting components and cannot limit heat loss, which leads to an increase in the cost of maintaining indoor temperature. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a prefabricated wall insulation shell structure in order to solve the technical problems mentioned in the background art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A prefabricated wall insulation mold structure includes an inner wall, with vertically machined mounting grooves on both the left and right sides of the outer wall of the inner wall, and multiple mounting holes machined at intervals from top to bottom in the mounting grooves;
[0007] The exterior wall is set on the outside of the interior wall. The interior wall of the exterior wall is fixedly connected to the mounting slot. The side wall of the mounting block is machined with two mounting holes coaxial with the mounting holes from top to bottom.
[0008] The intermediate filler is placed between the inner wall and the outer wall. The side wall of the intermediate filler has a clearance groove to avoid the installation block. The intermediate filler is mainly composed of an outer insulation layer, sound-absorbing foam and an inner insulation layer spliced together in sequence. The inner insulation layer is in contact with the inner wall and the outer insulation layer is in contact with the outer wall.
[0009] Furthermore, a filling groove is machined on the side of the mounting block near the mounting groove, so that there is space between the mounting block and the mounting groove for pouring concrete.
[0010] Furthermore, an expansion bolt is fixedly connected inside the second mounting hole, with one end of the expansion bolt away from the second mounting hole passing through the first mounting hole and extending to the outside of the inner wall.
[0011] Furthermore, the inner wall is reinforced with edge steel bars around its perimeter.
[0012] Furthermore, the outer insulation layer is a foamed polyurethane board.
[0013] Furthermore, the inner insulation layer is a graphite polystyrene board.
[0014] In summary, this utility model has at least one of the following beneficial technical effects:
[0015] 1. This precast wall insulation mold structure, through the setting of intermediate filler, not only enables the precast wall to have excellent thermal insulation effect, but also enables the precast wall to have excellent waterproof and sound insulation capabilities, thereby greatly improving the user experience, effectively improving the practicality of the precast wall, and making the precast wall easier to promote.
[0016] 2. This precast wall insulation mold structure, through the installation blocks and expansion bolts, can securely connect the inner wall and the outer wall, and after the connection is made, concrete is poured to further strengthen the connection strength, so that the precast wall can have excellent service strength, thereby further improving the practicality of the precast wall. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of a prefabricated wall insulation mold shell structure according to the present invention.
[0019] Figure 2 This is a schematic diagram of the rear view of a prefabricated wall insulation mold shell structure according to the present invention.
[0020] Figure 3 This is a three-dimensional structural schematic diagram of the installation groove position in a prefabricated wall insulation mold shell structure according to the present invention.
[0021] Figure 4 This is a top view schematic diagram of a prefabricated wall insulation mold shell structure according to the present invention.
[0022] Figure 5 This is a schematic diagram of the intermediate filler material in a prefabricated wall insulation mold shell structure according to this utility model.
[0023] In the diagram, 1. Inner wall; 2. Outer wall; 3. Intermediate filler; 31. Outer insulation layer; 32. Sound-absorbing foam; 33. Inner insulation layer; 4. Installation groove; 5. Installation hole one; 6. Installation block; 7. Installation hole two; 8. Clearance groove; 9. Filling groove; 10. Expansion bolt; 11. Edge reinforcement. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the accompanying drawings.
[0025] Example:
[0026] Reference Figure 1 - Figure 5 The present invention discloses a prefabricated wall insulation mold shell structure, including an inner wall 1. The outer wall of the inner wall 1 has vertically processed installation grooves 4 on both the left and right sides. The installation grooves 4 have multiple installation holes 5 spaced from top to bottom.
[0027] The outer wall 2 is located on the outside of the inner wall 1. The inner wall of the outer wall 2 is fixedly connected to the mounting slot 4. The side wall of the mounting block 6 is machined from top to bottom with a mounting hole 7 coaxial with the mounting hole 1 5.
[0028] The intermediate filler 3 is filled between the inner wall 1 and the outer wall 2. The side wall of the intermediate filler 3 is provided with a clearance groove 8 for avoiding the installation block 6. The intermediate filler 3 is mainly composed of an outer insulation layer 31, a sound-absorbing foam 32 and an inner insulation layer 33 spliced together in sequence. The inner insulation layer 33 is in contact with the inner wall 1 and the outer insulation layer 31 is in contact with the outer wall 2.
[0029] In this embodiment, observation Figure 1 It can be seen that by setting an outer wall 2 on the outside of the inner wall 1, and filling the space between the inner wall 1 and the outer wall 2 with intermediate filler 3, an intermediate layer for insulation can be created between the precast walls, which effectively improves the insulation effect of the precast walls.
[0030] Then looked at Figure 5 The intermediate filler 3 is mainly composed of an outer insulation layer 31, a sound-absorbing foam 32, and an inner insulation layer 33, which are spliced together in sequence. The inner insulation layer 33 is in contact with the inner wall 1, and the outer insulation layer 31 is in contact with the outer wall 2. This can improve the insulation effect of the precast wall while improving the sound insulation effect of the precast wall, thereby further increasing the practicality of the precast wall.
[0031] Because the sound-absorbing foam 32 is usually designed in a wavy shape to optimize the sound wave attenuation effect, and its porous internal structure also gives it good deformation ability, when the splicing thickness of the outer insulation layer 31, the sound-absorbing foam 32 and the inner insulation layer 33 is slightly greater than the distance between the inner wall 1 and the outer wall 2, the intermediate filler 3 will be in a slightly compressed state. This state causes the sound-absorbing foam 32 to deform slightly, thereby providing a support effect for the inner insulation layer 33 and the outer insulation layer 31. This allows the inner insulation layer 33 to be stably attached to the inner wall 1, and the outer insulation layer 31 to be stably attached to the outer wall 2. This ensures that the intermediate filler 3 is in a stable state during the installation of the precast wall, avoiding misalignment between the outer insulation layer 31 and the inner insulation layer 33, which would create heat dissipation gaps and further improve the insulation effect of the precast wall.
[0032] The intermediate layer affects the connection strength between the inner wall 1 and the outer wall 2, thus reducing the strength of the precast wall. Therefore, in combination with... Figure 2 and Figure 3 It can be observed that an installation groove 4 is provided on the outer wall of the inner wall 1, and an installation block 6 is fixedly connected to the inner wall of the outer wall 2 at the position corresponding to the installation groove 4. Subsequently, multiple installation holes 5 are provided at intervals from top to bottom in the installation groove 4. The installation block 6 is provided with an installation hole 7 coaxial with the installation hole 5 at the position corresponding to the installation hole 5. An expansion bolt 10 can be driven into the installation hole 7, and the end of the expansion bolt 10 away from the installation hole 7 can pass through the installation hole 5 and extend to the outside of the inner wall 1. The inner wall 1 and the outer wall 2 can then be fastened together with a nut. This can be used to improve the strength of the precast wall and thus improve its practicality.
[0033] Since the outer wall 2 and the inner wall 1 are fastened by the mounting block 6 and the expansion bolt 10, the side wall of the intermediate filler 3 sandwiched between the outer wall 2 and the inner wall 1 is provided with a clearance groove 8 to avoid the mounting block 6, so as to avoid affecting the installation of the intermediate filler 3.
[0034] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the mounting block 6 has a filling groove 9 machined on the side near the mounting groove 4, so that there is space between the mounting block 6 and the mounting groove 4 for pouring concrete.
[0035] In this embodiment, the opening of mounting hole 5 and mounting hole 7 will cause gaps to remain after the expansion bolt 10 is anchored, thus affecting the fixing strength.
[0036] Therefore, combining Figure 3 and Figure 4It can be seen that by processing a filling groove 9 on the side of the mounting block 6 near the mounting groove 4, a space for pouring concrete is left between the mounting block 6 and the mounting groove 4. At this time, after the outer wall 2 and the inner wall 1 are fastened, concrete can be filled into the filling groove 9 to block the gap, which can further improve the strength of the precast wall.
[0037] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the inner wall 1 is provided with edge steel bars 11 around its perimeter.
[0038] In this embodiment, by providing edge steel bars 11 around the inner wall 1, the overall performance and durability of the precast wall can be significantly improved during use, thereby further enhancing the practicality of the precast wall.
[0039] In a further preferred embodiment of this utility model, such as Figure 5 As shown, the outer insulation layer 31 is a foamed polyurethane board;
[0040] The inner insulation layer 33 is a graphite polystyrene board.
[0041] In this embodiment, since the external insulation layer 31 is in contact with the external environment, it not only needs to be thermally insulated, but also needs to have a certain waterproof capability. Therefore, the external insulation layer 31 is made of polyurethane foam board. Polyurethane foam has very good integrity and waterproofness, so that the precast wall has excellent waterproofness.
[0042] The inner insulation layer 33 will not be exposed to rainwater. Instead, it is used to prevent heat transfer between the interior and the outside. Therefore, the inner insulation layer 33 is made of graphite polystyrene board, which not only has excellent insulation performance, but also contains a neopor factor that has heat reflection function and flame retardant B1 fire resistance, thereby further improving the indoor insulation effect and making the precast wall more practical.
[0043] The implementation principle of the above embodiment is as follows: the inner insulation layer 33, the sound-absorbing foam 32 and the outer insulation layer 31 are spliced together to form the intermediate filler 3. Then the intermediate filler 3 is placed on the outer wall 2. Finally, the outer wall 2 and the inner wall 1 are fastened together with expansion bolts 10. Then concrete is filled into the filling groove 9 of the installation block 6. After the concrete solidifies, the precast wall can be completed.
[0044] This wall not only has excellent thermal insulation performance, but also excellent waterproof and sound insulation capabilities, which greatly improves the practicality of prefabricated walls.
[0045] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A prefabricated wall insulation mold structure, characterized in that, The inner wall (1) is vertically machined on both the left and right sides of the outer wall of the inner wall (1), and multiple installation holes (5) are machined at intervals from top to bottom in the installation groove (4). The outer wall (2) is set on the outside of the inner wall (1). The inner wall of the outer wall (2) is fixedly connected to the mounting slot (4). The side wall of the mounting block (6) is machined from top to bottom with a mounting hole (7) coaxial with the mounting hole (5). Intermediate filler (3) is filled between the inner wall (1) and the outer wall (2). The side wall of the intermediate filler (3) is provided with a clearance groove (8) for avoiding the installation block (6). The intermediate filler (3) is mainly composed of an outer insulation layer (31), sound-absorbing foam (32) and an inner insulation layer (33) spliced together in sequence. The inner insulation layer (33) is in contact with the inner wall (1), and the outer insulation layer (31) is in contact with the outer wall (2).
2. A prefabricated wall thermal insulation formwork structure according to claim 1, characterized in that, The mounting block (6) has a filling groove (9) on the side near the mounting groove (4) so that there is space between the mounting block (6) and the mounting groove (4) for pouring concrete.
3. The prefabricated wall insulation mold shell structure according to claim 2, characterized in that, An expansion bolt (10) is fixedly connected inside the second mounting hole (7). The end of the expansion bolt (10) away from the second mounting hole (7) passes through the first mounting hole (5) and extends to the outside of the inner wall (1).
4. The prefabricated wall insulation mold shell structure according to claim 3, characterized in that, The inner wall (1) is provided with edge steel bars (11) around its perimeter.
5. A prefabricated wall thermal insulation formwork structure according to claim 4, characterized in that, The outer insulation layer (31) is a foamed polyurethane board.
6. The prefabricated wall insulation mold shell structure according to claim 5, characterized in that, The inner insulation layer (33) is a graphite polystyrene board.