A waterproofing sleeve for installing a concrete modular building steel sleeve

Abstract

A waterproof bushing for installing concrete modular building steel sleeve, including outer bushing, sealing ring and inner bushing, the wall thickness of outer bushing is asymmetric distribution, one side is thick wall, the other side is thin wall, inner bushing is fixedly installed at the inner side of outer bushing, the side of inner bushing is aligned with the other side thin wall of outer bushing, annular groove is formed between outer bushing and inner bushing, sealing ring is installed in annular groove, the inner diameter of sealing ring is less than the inner diameter of outer bushing and the inner diameter of inner bushing respectively;The utility model is preburied in the formwork of concrete space module in the formwork making and pouring stage, after the on-site assembly of concrete space module is completed, the steel sleeve is directly inserted into the preburied waterproof bushing, saves the operation process of installing mould, removing mould and waterproof plugging between steel sleeve and installation hole.

Description

Technical Field

[0001] This utility model relates to the field of concrete modular building technology, and in particular to a waterproof bushing for installing steel sleeves in concrete modular buildings. Background Technology

[0002] Modular concrete building systems are a highly prefabricated and assembled construction method characterized by rapid construction, controllable quality, and energy efficiency. Modular concrete buildings utilize industrialized design and construction, manufacturing standardized prefabricated concrete spatial modules with functional features in a factory, and then assembling these modules on-site to form a concrete structural building, thereby improving construction quality and efficiency.

[0003] In concrete structures, water, electricity, HVAC, and fire protection pipelines need to pass through different concrete modules. Steel sleeves provide a protective channel for these pipelines, preventing damage to the pipelines or the concrete structure. In existing modular concrete buildings, the predetermined positions of the steel sleeves are first determined during the formwork fabrication stage. The mold is then installed at these predetermined positions, and the mold at the steel sleeve location is removed simultaneously when the concrete module formwork is dismantled. Installation holes for the steel sleeves are pre-drilled in the concrete module formwork. After the concrete modules are assembled on-site, the steel sleeves are inserted into the corresponding pre-drilled holes, and the space between the steel sleeve and the installation hole is sealed with waterproofing. However, the current steel sleeve installation process for modular concrete is cumbersome and inefficient. The gap between the steel sleeve and the installation hole is small, and waterproofing is typically done using expanding mortar or epoxy resin, which is prone to leakage and unsightly.

[0004] Therefore, it is desirable to have a waterproof bushing for installing steel sleeves in modular concrete buildings that can solve the defects and problems existing in the prior art. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings and deficiencies of the existing technology, this utility model provides a waterproof bushing for installing steel sleeves in modular concrete buildings, which solves the existing technical problems of complicated steel sleeve installation process and reduced construction efficiency of modular concrete buildings.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model employs a waterproof bushing for installing steel sleeves in modular concrete buildings. The waterproof bushing includes an outer bushing, a sealing ring, and an inner bushing. The wall thickness of the outer bushing is asymmetrically distributed, with one side being thick and the other side being thin. The inner bushing is fixedly installed inside the outer bushing, with its side edge aligned with the thin wall of the other side of the outer bushing. An annular groove is formed between the outer bushing and the inner bushing, and the sealing ring is installed within the annular groove. The inner diameter of the sealing ring is smaller than both the inner diameter of the outer bushing and the inner diameter of the inner bushing.

[0009] This utility model discloses a waterproof bushing for installing steel sleeves in modular concrete buildings. The bushing is pre-embedded in the mold shell during the casting stage of the concrete space module. After the concrete space module is assembled on site, the steel sleeve is directly inserted into the pre-embedded waterproof bushing, saving the operation process of installing and removing molds and sealing the steel sleeve with waterproofing between the installation opening and the installation opening.

[0010] Preferably, the sealing ring includes a bushing sealing ring and a pipe wall sealing ring, with the pipe wall sealing ring disposed on the side of the bushing sealing ring.

[0011] Preferably, the outer shape of the bushing seal ring matches the inner shape of the annular groove, and the bushing seal ring is engaged within the annular groove.

[0012] Preferably, the pipe wall sealing ring is disposed inside the thick-walled side of the outer bushing.

[0013] Preferably, the sealing ring is integrally formed.

[0014] Preferably, the outer diameter of the bushing sealing ring is larger than the outer diameter of the pipe wall sealing ring, and the outer diameter of the bushing sealing ring is equal to the inner diameter of the pipe wall sealing ring.

[0015] Preferably, the outer side of the pipe wall sealing ring away from the bushing sealing ring has a rounded corner.

[0016] Preferably, the radius of the fillet is in the range of 0.3mm-0.5mm.

[0017] (III) Beneficial Effects

[0018] This utility model discloses a waterproof bushing for installing steel sleeves in modular concrete buildings, which has the following advantages:

[0019] 1. This application eliminates several construction steps in the concrete module's formwork fabrication stage, such as installing the mold at the predetermined position of the steel sleeve, removing the mold at the position of the steel sleeve during the formwork demolding stage, inserting the steel sleeve into the corresponding reserved steel sleeve installation hole after the concrete module is assembled on site, and waterproofing the connection between the steel sleeve and the installation hole.

[0020] 2. This application eliminates the need for waterproof sealing between the steel sleeve and the installation opening, reducing the curing time of the waterproof sealing material and shortening the connection time between processes.

[0021] 3. The waterproof bushing of this application enables the steel sleeve to be used immediately without the need for waterproof sealing, thereby improving construction speed and quality. Attached Figure Description

[0022] Figure 1 This is a front structural schematic diagram of the waterproof bushing used for installing steel sleeves in modular concrete buildings according to this utility model.

[0023] Figure 2 This is a longitudinal sectional view of the waterproof bushing used for installing steel sleeves in modular concrete buildings according to this utility model.

[0024] Figure 3 This is a schematic diagram of the sealing ring structure in the waterproof bushing of this utility model.

[0025] Figure 4 This is a schematic diagram of the steel sleeve installation structure using the waterproof bushing of this utility model.

[0026] [Explanation of Labels in the Attached Image]

[0027] 1: Outer bushing; 2: Sealing ring; 21: Bushing sealing ring; 22: Pipe wall sealing ring; 3: Inner bushing; 4: Mold shell; 5: Waterproof bushing body; 6: Steel sleeve. Detailed Implementation

[0028] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0029] This utility model discloses a waterproof bushing for installing steel sleeves in modular concrete buildings. The waterproof bushing includes an outer bushing, a sealing ring, and an inner bushing. The wall thickness of the outer bushing is asymmetrically distributed, with one side being thick and the other side being thin. The inner bushing is fixedly installed inside the outer bushing, with its side edge aligned with the thin wall of the other side of the outer bushing. An annular groove is formed between the outer bushing and the inner bushing, and the sealing ring is installed in the annular groove. The inner diameter of the sealing ring is smaller than the inner diameter of both the outer bushing and the inner bushing.

[0030] The waterproof bushing for installing steel sleeves in modular concrete buildings proposed in this embodiment uses a sealing ring in conjunction with an outer bushing and an inner bushing, enabling the steel sleeve to be plugged into the concrete module immediately, eliminating the need for waterproof sealing between the steel sleeve and the pre-reserved installation opening in the concrete module.

[0031] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0032] Example 1:

[0033] like Figure 1 As shown, a waterproof bushing for installing steel sleeves in modular concrete buildings includes an outer bushing 1, a sealing ring 2, and an inner bushing 3. The outer bushing 1 is generally circular. The inner bushing 3 is fixedly installed inside the outer bushing 1. The dimensional tolerance between the outer surface of the inner bushing 3 and the inner surface of the outer bushing 1 is no greater than -0.2mm. The outer bushing 1 and the inner bushing 3 are bonded and fixed together with special ABS glue, forming an annular groove between the outer bushing 1 and the inner bushing 3. The sealing ring 2 is installed in the annular groove. The inner diameter of the sealing ring 2 is smaller than the inner diameter of both the outer bushing 1 and the inner diameter of the inner bushing 3.

[0034] Example 2:

[0035] like Figure 2 and Figure 3 As shown, the overall width of the outer bushing 1 is 30mm. The wall thickness of the outer bushing 1 is asymmetrically distributed, with one side being a thick wall of 7mm and the other side being a thin wall of 3mm. The side of the inner bushing 3 is aligned with the thin wall of the other side of the outer bushing 1. The overall width of the inner bushing 3 is 14mm. A 6mm wide annular groove is formed between the outer bushing 1 and the inner bushing 3.

[0036] The sealing ring 2 includes a bushing sealing ring 21 and a pipe wall sealing ring 22, which are integrally formed. The pipe wall sealing ring 22 is disposed on the side of the bushing sealing ring 21. The outer shape of the bushing sealing ring 21 matches the inner shape of the annular groove, and the bushing sealing ring 21 is engaged in the annular groove. The pipe wall sealing ring 22 is disposed inside the thick-walled side of the outer bushing 1. The outer diameter of the bushing sealing ring 21 is larger than the outer diameter of the pipe wall sealing ring 22, and the outer diameter of the bushing sealing ring 21 is equal to the inner diameter of the pipe wall sealing ring 22. The outer side wall of the pipe wall sealing ring 22 away from the bushing sealing ring 21 has a rounded corner with a radius of 0.3 mm. In an embodiment not shown, the radius of the rounded corner is 0.4 mm.

[0037] Example 3:

[0038] like Figure 4As shown, the outer bushing 1 and inner bushing 3 are made of engineering plastic, and the sealing ring 2 is made of rubber. The inner bushing 3 is aligned with the inner edge of the outer bushing 1 and fixedly installed. The sealing ring 2 is then inserted into the annular groove formed between the outer bushing 1 and the inner bushing 3, thus completing the assembly of the waterproof bushing body 5 for installing the steel sleeve of the concrete modular building. During the membrane shell 4 pouring stage, the assembled waterproof bushing 5 is pre-embedded in the membrane shell 4, with both sides of the waterproof bushing body 5 flush with the inner and outer walls of the membrane shell 4, respectively. After the concrete module box is assembled on site, before the concrete is poured, the steel sleeve 6 is directly inserted into the waterproof bushing body 5, making the opening of the steel sleeve 6 flush with the side of the waterproof bushing body 5. This achieves the purpose of plugging and using the steel sleeve 6 on the construction site without sealing.

[0039] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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 mechanical connection or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this utility model, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A waterproof bushing for installing steel sleeves in modular concrete buildings, characterized in that, The waterproof bushing includes an outer bushing (1), a sealing ring (2), and an inner bushing (3). The wall thickness of the outer bushing (1) is asymmetrically distributed, with one side being a thick wall and the other side being a thin wall. The inner bushing (3) is fixedly installed inside the outer bushing (1). The side of the inner bushing (3) is aligned with the thin wall on the other side of the outer bushing (1). An annular groove is formed between the outer bushing (1) and the inner bushing (3). The sealing ring (2) is installed in the annular groove. The inner diameter of the sealing ring (2) is smaller than the inner diameter of the outer bushing (1) and the inner diameter of the inner bushing (3), respectively.

2. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 1, characterized in that: The sealing ring (2) includes a bushing sealing ring (21) and a pipe wall sealing ring (22), with the pipe wall sealing ring disposed on the side of the bushing sealing ring (21).

3. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 2, characterized in that: The outer shape of the bushing seal (21) matches the inner shape of the annular groove, and the bushing seal (21) is engaged in the annular groove.

4. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 3, characterized in that: The pipe wall sealing ring (22) is located inside the thick wall side of the outer bushing (1).

5. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 4, characterized in that: The sealing ring (2) is integrally formed.

6. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 5, characterized in that: The outer diameter of the bushing seal (21) is greater than the outer diameter of the pipe wall seal (22), and the outer diameter of the bushing seal (21) is equal to the inner diameter of the pipe wall seal (22).

7. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 6, characterized in that: The outer side of the pipe wall sealing ring (22) away from the bushing sealing ring (21) has a rounded corner.

8. The waterproof bushing for installing steel sleeves in modular concrete buildings according to claim 7, characterized in that: The radius of the fillet is in the range of 0.3mm-0.5mm.

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