Structural heat preservation and sealing integrated granary gas film wall

Abstract

The utility model relates to the technical field of granary heat preservation, in particular to a structural heat preservation and sealing integrated granary gas film wall which comprises frame stand columns, frame cross beams and composite wallboards. The frame stand columns are fixedly connected with the ground, and the frame cross beams are horizontally arranged between the adjacent frame stand columns to form a stable frame structure. The composite wallboard is mounted in the frame gap and comprises a reinforcing mesh layer, a concrete layer, a polyurethane foam layer and a PVDF (Polyvinylidene Fluoride) film layer; the reinforcing mesh layer serves as a framework, the concrete layer forms a reinforced concrete structure to provide support, the polyurethane foam layer serves as a heat preservation and insulation layer, and the PVDF film layer has sealing performance, corrosion resistance and self-cleaning performance. The connecting piece is composed of thin-walled section steel and a self-tapping screw, thermal expansion and cold contraction are compensated through a spring gasket, the structural strength is enhanced through the arch-shaped thin-walled section steel, and a concave cavity is filled with rubber to reduce friction and ensure sealing performance; the heat preservation performance and the sealing performance of the granary air film wall ensure that the indoor environment is stable, and reliable technical support is provided for wide application of the granary air film wall.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of granary heat preservation, especially to a structure heat preservation and sealing integrated granary air film wall. BACKGROUND

[0002] In recent years, China's grain storage facilities have made great progress in structural optimization, but there is a sharp contrast with the iteration of civil residential wall technology. As the cornerstone of national food security, the modernization process of the core enclosure system of the warehouse wall is obviously lagging behind, especially in the application of new wall materials and the innovation of construction technology, which still remains in the traditional operation mode, forming a generational gap with the development of modern storage technology.

[0003] The existing house-type warehouse walls generally use the backward block process, which exposes structural defects: single wall cannot meet the stringent requirements of modern grain storage for temperature and humidity control, leading to deterioration of grain quality; the application rate of prefabricated components is less than 15%, and the on-site wet operation accounts for more than 70%, directly causing the construction period to be prolonged and the quality to fluctuate significantly; traditional construction relies on manual operation, and the contradiction between labor intensity and skill requirements is prominent, quality problems occur frequently, which has seriously restricted the realization of high grain turnover efficiency. Therefore, it has become an urgent task for technical personnel in this field to develop a composite wall with structure, heat preservation, and sealing integration. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the deficiencies in the background art, the utility model discloses a structure heat preservation and sealing integrated granary air film wall.

[0005] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0006] A structure heat preservation and sealing integrated granary air film wall comprises:

[0007] Frame columns, a plurality of frame columns are arranged at intervals and are tightly connected with the ground;

[0008] Frame beams are horizontally arranged between two adjacent frame columns, and the two ends of the frame beams are tightly connected with the corresponding frame columns to form a frame structure;

[0009] A composite wallboard is installed in the gap between the frame columns and the frame beams to form a wall;

[0010] The composite wallboard comprises:

[0011] A steel mesh layer as a framework;

[0012] A concrete layer is sprayed or poured on both sides of the steel mesh layer to form a reinforced concrete structure as a support body;

[0013] A polyurethane foam layer is sprayed on the outer side of the reinforced concrete structure as a thermal insulation layer;

[0014] A PVDF film layer is laid on the outer side of the polyurethane foam layer; the PVDF film layer is bonded with the polyurethane foam layer; or the PVDF film layer is fastened with the frame structure by bolts.

[0015] Preferably, a connecting piece is further included; the connecting piece includes:

[0016] A plurality of thin-walled steel bars are respectively arranged along the frame columns and the frame beams in length.

[0017] Self-tapping screws are used to fix the thin-walled steel bars on the frame structure, with their shanks penetrating the thin-walled steel bars.

[0018] Preferably, a spring washer is arranged between the self-tapping screw and the thin-walled steel bar.

[0019] Preferably, the thin-walled steel bar is in an arc structure.

[0020] Preferably, the concave cavity of the thin-walled steel bar is filled with rubber.

[0021] Preferably, nuts are pre-buried in the frame structure at positions corresponding to the self-tapping screws; and the PVDF film layer and the polyurethane foam layer are provided with through holes at positions corresponding to the nuts.

[0022] By adopting the technical scheme as described above, the utility model has the following beneficial effects:

[0023] The utility model has the characteristics of simple structure, high strength, wear resistance and corrosion resistance, and can ensure the stability and safety of the project. At the same time, the light weight of the air film material and the reasonable design of the frame structure make the entire wall structure lightweight, facilitating construction and transportation, and significantly reducing construction cost and labor intensity.

[0024] In terms of performance, the polyurethane foam layer as a thermal insulation layer can effectively reduce indoor and outdoor heat exchange, reduce energy consumption, and significantly improve the energy-saving performance of the building. In addition, the PVDF film layer has excellent sealing performance, can effectively prevent air penetration, maintain the stability of the indoor environment, and further reduce energy loss.

[0025] In construction, the construction method of prefabrication and assembly is adopted, the construction speed is fast, the amount of auxiliary materials is small, the investment of labor and time is greatly reduced, the construction period is significantly shortened. In the later maintenance, the air film material and the PVDF film layer have strong durability and long service life, and the daily maintenance is simple, and the later maintenance cost is further reduced. The design not only meets the requirements of modern buildings on high efficiency, energy saving and environmental protection, but also provides reliable technical support for the wide application of the grain storehouse air film wall. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the utility model;

[0027] Figure 2 is a structural schematic view of the composite wallboard;

[0028] Figure 3 is a structural schematic view of the connecting piece;

[0029] Figure 4 is a structural schematic view of the connecting piece.

[0030] In the drawing: 1, frame column; 2, frame beam; 3, composite wallboard; 3-1, steel mesh layer; 3-2, concrete layer; 3-3, polyurethane foam layer; 3-4, PVDF film layer; 4, connecting piece; 4-1, thin-walled steel; 4-2, self-tapping screw; 4-3, spring washer; 4-4, nut. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In the description of the utility model, it should be explained that the positions or location relations indicated by the terms "upper", "lower" and the like are based on the positions or location relations shown in the drawings, or the positions or location relations of the utility model product when it is usually placed, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Example 1:

[0035] Combined with appendix Figures 1-2 A structurally integrated, heat-insulating, and airtight membrane wall for grain silos includes frame columns 1, frame beams 2, and composite wall panels 3. Multiple frame columns 1 are arranged vertically at intervals and fixed to the ground via fastening connections. A frame beam 2 is horizontally positioned between adjacent frame columns 1, with both ends of the beam fastened to the corresponding frame column 1, forming a stable frame structure. To further enhance the overall structural integrity, it is preferable to design two frame beams 2 spaced apart between adjacent frame columns 1.

[0036] Composite wall panels 3 are installed in the gap area formed by the frame column 1 and the frame beam 2. The composite wall panels 3 and the frame structure together form the wall, forming a stable support system that can effectively withstand the influence of external environmental factors such as wind pressure, rain and snow.

[0037] The specific structure of composite wall panel 3 is as follows:

[0038] Steel mesh layer 3-1: As the skeleton of the entire composite wall panel 3, it plays a role in supporting and enhancing the structural strength.

[0039] Concrete layer 3-2: Concrete is sprayed or poured on both the inner and outer sides of the steel mesh layer 3-1 to form concrete layer 3-2. Concrete layer 3-2 and steel mesh layer 3-1 together constitute a reinforced concrete structure, serving as the main supporting structure of the wall and significantly enhancing the overall strength and stability of the wall.

[0040] Polyurethane foam layer 3-3: Polyurethane foam is sprayed onto the outside of the reinforced concrete structure to form polyurethane foam layer 3-3. This layer has excellent thermal insulation properties, effectively reducing heat exchange between indoors and outdoors and ensuring a constant internal temperature for the grain silo.

[0041] PVDF membrane layer 3-4: A PVDF membrane layer 3-4 is laid on the outside of the polyurethane foam layer 3-3. The PVDF membrane layer 3-4 is fixed to the polyurethane foam layer 3-3 by adhesive bonding or by bolting to the frame structure. The PVDF membrane layer 3-4 has excellent chemical corrosion resistance, weather resistance, and self-cleaning properties, which can significantly extend the service life of the wall and reduce maintenance costs.

[0042] It is worth noting that composite wall panels 3 can be prefabricated to the required dimensions to form an integrated structure. This design not only meets the structural strength requirements but also provides excellent thermal insulation and sealing performance, enabling the rapid completion of the entire wall construction after the frame structure is erected, significantly improving construction efficiency.

[0043] Example 2:

[0044] Combined with appendix Figures 1-4 This embodiment is a further optimization based on Embodiment 1, with the addition of connector 4. The specific structure is as follows:

[0045] The connector 4 consists of thin-walled steel sections 4-1 and self-tapping screws 4-2. Multiple thin-walled steel sections 4-1 are arranged along the entire length of the frame columns 1 and frame beams 2. Both ends of the thin-walled steel sections 4-1 are fixed to the frame structure using self-tapping screws 4-2. The shaft of the self-tapping screw 4-2 passes through the thin-walled steel section 4-1 and is securely fixed to the frame structure via a threaded connection.

[0046] To ensure reliable connection, a spring washer 4-3 is placed between the self-tapping screw 4-2 and the thin-walled steel section 4-1. The spring washer 4-3 can effectively compensate for dimensional errors caused by thermal expansion and contraction of the thin-walled steel section 4-1 due to temperature changes, while preventing the self-tapping screw 4-2 from loosening due to vibration.

[0047] The thin-walled steel section 4-1 adopts an arc-shaped structural design, which significantly enhances its structural strength. Furthermore, the cavities of the thin-walled steel section 4-1 are filled with rubber material. On one hand, the rubber filling ensures a tight fit between the thin-walled steel section 4-1 and the composite wall panel 3, guaranteeing a sealed connection; on the other hand, the rubber filling effectively reduces friction between the thin-walled steel section 4-1 and the PVDF membrane layer 3-4, extending the service life of the PVDF membrane layer 3-4.

[0048] To facilitate the installation of self-tapping screws 4-2, nuts 4-4 are pre-embedded in the frame structure at the corresponding positions of self-tapping screws 4-2. At the same time, through holes are reserved in the PVDF film layer 3-4 and the polyurethane foam layer 3-3 at the corresponding positions of nuts 4-4, so that self-tapping screws 4-2 can pass through and be fixed smoothly.

[0049] Through the above design, this embodiment, while maintaining the original structural strength and thermal insulation and sealing performance, further enhances the connection reliability and construction convenience of the wall, making it suitable for the construction needs of large-scale grain silo air-supported membrane walls.

[0050] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A structurally integrated, heat-insulating, and airtight grain silo air-supported membrane wall, characterized in that, include: Frame columns (1), multiple frame columns (1) are spaced apart and are firmly connected to the ground; A frame beam (2) is horizontally positioned between two adjacent frame columns (1), and both ends of the frame beam (2) are fastened to the corresponding frame columns (1) to form a frame structure. Composite wall panel (3) is installed in the gap between frame column (1) and frame beam (2) to form a wall; The composite wall panel (3) comprises: The steel mesh layer (3-1) serves as the framework; The concrete layer (3-2) is sprayed or poured on both sides of the steel mesh layer (3-1) to form a reinforced concrete structure, which serves as the main support. A polyurethane foam layer (3-3) is sprayed onto the outside of the reinforced concrete structure as an insulation layer; A PVDF membrane layer (3-4) is laid on the outside of a polyurethane foam layer (3-3); the PVDF membrane layer (3-4) is bonded to the polyurethane foam layer (3-3); or the PVDF membrane layer (3-4) is fastened to the frame structure by bolts.

2. The integrated thermal insulation and sealing grain silo air-supported membrane wall as described in claim 1, characterized in that, It also includes a connector (4); the connector (4) includes: Thin-walled steel section (4-1), multiple thin-walled steel sections (4-1) are arranged along the entire length of the frame column (1) and the frame beam (2); The self-tapping screw (4-2) has a shank that passes through the thin-walled steel section (4-1) and is used to fix the thin-walled steel section (4-1) to the frame structure.

3. The integrated thermal insulation and sealing grain silo air-supported membrane wall as described in claim 2, characterized in that: A spring washer (4-3) is provided between the self-tapping screw (4-2) and the thin-walled steel (4-1).

4. The integrated thermal insulation and sealing air-supported membrane wall for grain silos as described in claim 2, characterized in that: The thin-walled steel section (4-1) has an arc-shaped structure.

5. The integrated thermal insulation and sealing grain silo air-supported membrane wall as described in claim 4, characterized in that: The cavity of the thin-walled steel section (4-1) is filled with rubber.

6. The integrated thermal insulation and sealing air-supported membrane wall for grain silos as described in claim 2, characterized in that: The frame structure has nuts (4-4) pre-embedded at the positions corresponding to the self-tapping screws (4-2); the PVDF film layer (3-4) and the polyurethane foam layer (3-3) have through holes at the positions corresponding to the nuts (4-4).

Images