A wall cavity plugging device for building construction

Abstract

This utility model discloses a wall hole sealing device for building construction, comprising a columnar sealing body adapted to the size of the pre-reserved hole in the wall, a central hole penetrating the center of the sealing body, an expansion mechanism penetrating the central hole inside the sealing body, and a vertical through groove on the outer wall of the sealing body for changing the diameter of the sealing body under the action of the expansion mechanism; several anti-slip protrusions are evenly arranged on the outer circumference of the sealing body to enhance the friction between the sealing body and the wall; a sealing rubber sleeve is fitted on the outer circumference of the sealing body to improve the sealing performance between the sealing body and the wall hole. The wall hole sealing device provided by this utility model, through the design of the expansion mechanism, enables the sealing body to fit tightly against the wall, increasing the friction and adhesion between the sealing device and the wall, effectively preventing the sealing device from loosening or falling off, and improving the sealing firmness.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically to a device for sealing pre-reserved holes in walls for building construction. Background Technology

[0002] During construction, numerous openings are often left in walls to accommodate subsequent projects such as water and electricity pipe installation and ventilation system installation. These openings need to be sealed after the relevant works are completed to ensure that the integrity, waterproofing, and sound insulation properties of the walls are not affected. Traditional methods of sealing pre-existing wall openings have several problems. For example, simply filling with cement mortar can lead to cracks at the sealing point due to shrinkage during the hardening process, thus reducing waterproofing and sound insulation. Furthermore, if the wall around the opening is uneven, the cement mortar may not adhere tightly, further affecting the sealing quality. In addition, some existing sealing devices are complex in structure, inconvenient to install and disassemble, increasing construction costs and reducing efficiency. Therefore, there is an urgent need for a wall opening sealing device that can solve these problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a wall pre-reserved hole sealing device for building construction, so as to solve the problems of weak sealing, easy cracking, poor waterproof and sound insulation effect, and complex structure of sealing device, and inconvenient installation and disassembly in traditional sealing methods.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A wall cavity sealing device for building construction includes a columnar sealing body adapted to the size of the pre-reserved cavity in the wall. A central hole is formed in the center of the sealing body, and an expansion mechanism is installed inside the sealing body through the central hole. A vertical through-groove is formed on the outer wall of the sealing body to change the diameter of the sealing body under the action of the expansion mechanism. Several anti-slip protrusions are evenly distributed on the outer circumference of the sealing body to enhance the friction between the sealing body and the wall. A sealing rubber sleeve is fitted on the outer circumference of the sealing body to improve the sealing performance between the sealing body and the cavity in the wall.

[0006] To further optimize the technical solution, the expansion mechanism includes a screw rod passing through a central hole. A wedge-shaped expansion block is fixedly installed at one end of the screw rod, and a wedge-shaped expansion block is threadedly connected to the other end of the screw rod. The expansion blocks at both ends are arranged opposite to each other, and an adjusting nut for adjusting the distance between the two expansion blocks is sleeved on one end of the screw rod that passes through the expansion block.

[0007] To further optimize the technical solution, wedge-shaped grooves that match the expansion blocks are provided at both ends of the central hole.

[0008] The technical solution has been further optimized by providing a groove on the outer side of the expansion block that is movably connected to the screw for placing the adjusting nut.

[0009] To further optimize the technical solution, the sealing body is made of high-strength, corrosion-resistant aluminum alloy material.

[0010] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0011] This utility model provides a wall cavity sealing device for building construction. Through the design of the expansion mechanism, the sealing body can be tightly fitted to the wall, increasing the friction and adhesion between the sealing device and the wall, effectively preventing the sealing device from loosening or falling off, and improving the sealing firmness. The sealing rubber sleeve on the sealing body can effectively prevent the penetration of moisture and air, improve the waterproof and sound insulation performance of the wall, and provide a better use environment for the building. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the external structure of this utility model.

[0013] The components include: 1. sealing body, 2. center hole, 3. expansion block, 4. wedge groove, 5. groove, 6. screw, 7. adjusting nut, 8. anti-slip protrusion, 9. sealing rubber sleeve, and 10. through groove. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] A wall cavity sealing device for building construction, combined with Figures 1 to 2 As shown, it includes a sealing body 1, which has a columnar structure that is adapted to the size of the pre-reserved hole in the wall and can be easily inserted into the hole. The sealing body 1 is made of high-strength, corrosion-resistant aluminum alloy material to ensure the service life and stability of the sealing device.

[0016] The sealing body 1 has a central hole 2 that penetrates through the sealing body. An expansion mechanism is installed inside the sealing body 1. A vertical through groove 10 is provided on the outer wall of the sealing body 1 to change the diameter of the sealing body 1 under the action of the expansion mechanism to seal the reserved hole in the wall.

[0017] The expansion mechanism includes a screw 6 passing through a central hole 2. Wedge-shaped expansion blocks 3 are located at both ends of the screw 6, facing each other. One expansion block 3 is fixed to the top of the screw 6, while the other is threaded onto the screw 6. An adjusting nut 7 is fitted onto the end of the screw 6 that extends beyond the expansion blocks 3, used to adjust the distance between the two expansion blocks. Wedge-shaped grooves 4 are located at both ends of the central hole 2, corresponding to the expansion blocks on their respective sides. The movement of the wedge-shaped expansion blocks increases the diameter of the sealing body, thereby sealing the pre-reserved opening in the wall.

[0018] A groove 5 is provided on the outer end face of the expansion block 3, which is movably connected to the screw 6. The adjusting nut is placed in the groove, and the size of the groove is larger than the size of the adjusting nut to facilitate the operation of the adjusting nut.

[0019] Several anti-slip protrusions 8 are provided on the outer peripheral surface of the sealing body 1 to enhance the friction between the sealing body and the wall and prevent the sealing device from shifting during use.

[0020] A sealing rubber sleeve 9 is fitted on the outer circumference of the sealing body 1 to improve the sealing performance between the sealing body 1 and the hole in the wall, effectively preventing the penetration of moisture and air, and also playing a buffering role to reduce the impact of external factors on the sealing device.

[0021] In use, this invention involves inserting the sealing device into a pre-drilled hole in the wall. Rotating the adjusting nut causes the screw to move the expansion blocks at both ends within the wedge-shaped groove, compressing the sealing body and increasing its outer diameter for a tight fit against the wall. The anti-slip protrusions further enhance stability. A sealing rubber sleeve forms a sealing layer between the sealing body and the wall hole, preventing moisture and air penetration. Disassembly is achieved by simply rotating the adjusting nut in the opposite direction.

Claims

1. A device for sealing pre-reserved holes in walls used in building construction, characterized in that: The system includes a columnar sealing body (1) that is adapted to the size of a pre-reserved hole in the wall. A central hole (2) is provided in the center of the sealing body (1). An expansion mechanism is provided inside the sealing body (1) that passes through the central hole. A vertical through groove (10) is provided on the outer wall of the sealing body (1) to change the diameter of the sealing body under the action of the expansion mechanism. Several anti-slip protrusions (8) are evenly provided on the outer circumferential surface of the sealing body (1) to enhance the friction between the sealing body and the wall. A sealing rubber sleeve (9) is fitted on the outer circumferential surface of the sealing body (1) to improve the sealing performance between the sealing body (1) and the hole in the wall.

2. The wall cavity sealing device for building construction according to claim 1, characterized in that: The expansion mechanism includes a screw (6) that passes through the central hole (2). One end of the screw (6) is fixedly provided with a wedge-shaped expansion block (3), and the other end of the screw (6) is connected to the wedge-shaped expansion block (3) by a thread. The expansion blocks (3) at both ends are arranged opposite to each other. One end of the screw (6) that passes through the expansion block (3) is fitted with an adjusting nut (7) for adjusting the distance between the two expansion blocks.

3. A wall cavity sealing device for building construction according to claim 2, characterized in that: The two ends of the central hole (2) are provided with wedge-shaped grooves (4) that are matched with the expansion block (3).

4. A wall cavity sealing device for building construction according to claim 2, characterized in that: The expansion block (3) that is movably connected to the screw (6) has a groove (5) on its outer side for placing the adjusting nut.

5. A wall cavity sealing device for building construction according to claim 1, characterized in that: The sealing body (1) is made of high-strength, corrosion-resistant aluminum alloy material.

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