CN201826403U - Building exterior wall insulation structure - Google Patents

Abstract

The utility model discloses a building exterior wall heat preservation structure, which is installed on the wall body of the building exterior wall, comprising a decorative panel and a foamed polyurethane layer located inside the decorative panel, and the two sides of the foamed polyurethane layer are closely attached to the wall body and veneer. Using factory-produced thermal insulation and decorative composite profiles, when the on-site dry-hanging installation technology is used, the thickness of the thermal insulation board is cut according to the design thickness to make it an invariable size, and the dimensional consistency of mass production is guaranteed. The on-site installation seam is closed with foamed polyurethane, which becomes The large-area continuous insulation layer ensures stable and up-to-standard insulation effects in terms of materials and construction techniques. At the same time, it can realize no-humidity operation in the whole construction process, which is simple and fast. It can complete the external wall insulation, waterproofing and decoration works on site at one time. It can not only meet the various style requirements of various high-end and high-end exterior finishes of public buildings, but also apply the energy-saving of existing buildings. The renovation project has a wide range of adaptability.

Description

Building exterior wall insulation structure

technical field

The utility model relates to a thermal insulation structure of the outer wall of a building, which can also be applied to the roof for thermal insulation.

Background technique

At present, domestic building energy conservation has been promoted from newly built residential buildings to public buildings and existing buildings, accompanied by the multi-angle, all-round and high-standard requirements for the adaptive development of external thermal insulation technology. . With the continuous improvement of the level of urban management, especially the requirements for non-humidity operation determined by the management of dust sources during construction, the national technical regulations for thermal insulation engineering and the national requirements for the long-term reliability of construction engineering quality, the construction industry is following the trend of external thermal insulation. The requirements for the simplicity of construction of external thermal insulation technology are determined by the continuous maturity of technology and the gradual improvement of construction technology. At present, the main materials for external wall insulation in my country are organic polymer materials, such as EPS, XPS, polyurethane, etc. The main methods used for external wall insulation are: foamed plastic panels, foamed plastic composite panels, and on-site foaming. The main form of external wall insulation is external wall insulation.

Its basic structure is shown in Figure 1. The system requires the leveling of the base wall, and the flatness meets the specification requirements. Adhesive 102 is used to bond EPS/XPS board 103 to base wall 101, supplemented by anchor bolts 107, and the protective layer is polymer plastering mortar 104 embedded with alkali-resistant mesh cloth or hot-zinc welded mesh reinforcement, so as to resist Alkali grid cloth is the structure of reinforced net, in order to enhance the impact resistance, the first layer needs to add a layer of reinforced alkali-resistant glass fiber net 105. The finishing layer 106 may be paint or ceramic tiles or the like.

However, this traditional construction process often causes quality problems in buildings, especially cracks, falling off, cracking and fire hazards. The analysis of the reasons for the above problems mainly includes the poor compatibility between the materials, which leads to the fragile combination between the materials, the complicated construction technology, which brings the quality hidden dangers of the selected materials and construction, and the thermal insulation materials in the construction process. Prolonged exposure creates a fire hazard.

Utility model content

In order to solve the difficulty of controlling the construction of the existing system, determine the problems of standardized production and a series of quality problems after construction, make full use of resources, reduce costs (raw material costs, transportation costs, keel costs, construction costs), etc., this practical The new type provides a new type of external thermal insulation system for external walls, which uses polyurethane thermal insulation and decoration integrated external thermal insulation system for external walls.

The technical scheme that the utility model solves technical problem is:

The building exterior wall insulation structure is installed on the wall body of the building exterior wall, and includes a veneer and a foamed polyurethane layer inside the veneer, and the two sides of the foamed polyurethane layer are closely attached to the wall and the veneer.

Preferably, the foamed polyurethane layer is molded by in-situ casting.

Preferably, the veneer and the foamed polyurethane layer are prefabricated into foamed polyurethane sheets for on-site dry-hanging, which can be produced in a factory, then dry-hanged on-site, or combined with anchoring and pasting to complete the construction. The anchoring structure passes through the veneer, connects the polyurethane plate to the wall of the exterior wall, and bonds the side of the foamed polyurethane plate to the veneer and the wall, and the on-site installation seam of the foamed polyurethane plate is closed with foamed polyurethane. When using factory-produced thermal insulation and decorative composite profiles, when the on-site dry-hanging installation technology is used, the thickness of the thermal insulation board is cut according to the design thickness to make it an invariable size, and the dimensional consistency of mass production is guaranteed. The on-site installation seam is closed with foamed polyurethane, which becomes The large-area continuous insulation layer ensures stable and up-to-standard insulation effects in terms of materials and construction techniques.

It can realize the wet-free operation in the whole construction process, which is simple and fast, and completes the external wall (roof) insulation, waterproof and decoration projects at one time on site. The building energy-saving renovation project has a non-humid operation method that meets the energy-saving standards of various engineering exterior walls (roofs) and various multi-level decorations in various regions of our country, and has a wide range of adaptability.

Description of drawings

Figure 1 is a typical structure of foam plastic board external wall external insulation system;

In the figure: 101, base wall 102, adhesive 103, EPS/XPS board 104, polymer plastering mortar 105, reinforced alkali-resistant glass fiber mesh 106, facing layer 107, anchor

Figure 2 is a technical structural diagram of cast-in-place polyurethane foam insulation material;

In the figure: 21. Anchors 22. Walls 23. Polyurethane casting layer 24. Decorative panels 25. Metal frame

Figure 3 is a structural diagram of the on-site dry-hanging installation technology.

In the figure: 31, anchor bolt 32, wall body 33, foamed polyurethane board 34, metal frame

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 2 and 3, the building exterior wall insulation structure is installed on the wall of the building exterior wall, including a veneer and a foamed polyurethane layer located inside the veneer, and the two sides of the foamed polyurethane layer are close to the Walls and veneers.

The specific implementation steps of plan one are first to anchor the veneer 24 on the wall body 22 of the outer wall of the building through the metal frame 25 inlaid in its periphery with the anchor bolt 21, and then pour the foamed polyurethane 23, without manual smearing operation, it can The construction period is greatly shortened, and the external thermal insulation technology is anhydrous, cold bridge-free, and zero-pollution.

The specific implementation steps of the second scheme are to anchor the foamed polyurethane board 33 produced in factory to the wall body 32 of the outer wall of the building through the metal frame 34 embedded in its periphery with anchor bolts 31 . The cast-in-place joints are closed with foamed polyurethane to make it a large-area continuous insulation layer, thus ensuring the quality and stability of the insulation effect in terms of materials and construction techniques.

The specific implementation steps of scheme three are to paste the thermal insulation and decoration integrated board on the wall of the building exterior wall with adhesive materials, and then use anchor bolts to reinforce the board through the metal frame embedded around the board. The foamed polyurethane insulation material bonds the decorative board and the wall (roof) base layer into multiple composite bonds to realize the high-strength connection between the decorative board and the wall (roof).

The production process of polyurethane thermal insulation and decoration integrated board is composed of the production process of decorative stone and the composite process of thermal insulation materials. The production of decorative panels includes cutting, air-drying, burning, sandblasting, etc.; the composite process of thermal insulation materials includes drying, dust removal, panel pretreatment, bonding frame, panel thickness planing, foaming, drying, interface treatment, peripheral Cleaning, laminating, packaging, warehousing and other links; the insulation material adopts polyurethane insulation material with small thermal conductivity, small linear shrinkage, strong molecular polarity, good thermosetting, long service life and self-adhesiveness. The thermal insulation and decoration integrated composite board is produced in a factory, and the thickness of the thermal insulation board is cut according to the design thickness to make it into an invariable size, and the dimensional consistency of mass production is guaranteed.

Polyurethane is a thermosetting plastic. Due to its small thermal conductivity, foamed polyurethane materials are strong polar materials like common building materials such as cement, steel, glass, and wood. When foaming on site, it can effectively fill the pores and cracks of buildings. Large-area seamless insulation layer, so under the same insulation effect, the thickness of the insulation layer can be reduced by about 40% compared with EPS. At the same time, because of its small linear shrinkage, it can be bonded to the wall without cavities. Regardless of whether the finish is paint or brick, it can effectively overcome surface defects and greatly improve engineering reliability and life. It has better performance in flame retardancy, which can significantly reduce the risk of softening dripping and fire.

Adopting the structure described in the utility model to insulate the exterior wall of a building does not require manual smearing, can greatly shorten the construction period, and realize anhydrous and zero-pollution external heat preservation technology. Factory production, standardized supply of products, standardized promotion of technology, assembly construction, and realization of zero-pollution on-site dry operation of external thermal insulation technology will surely become the future technological development direction of China's external thermal insulation industry.

Claims (1)

1. the building exterior wall heat preserving structure is installed on the body of wall of external wall, it is characterized in that, comprises facing plate and the foamed polyurethane layer that is positioned at facing plate inboard, and body of wall and facing plate are close in the two sides of described foamed polyurethane layer.

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