A sealing structure for sealing the screw hole of an outer wall

Abstract

The application relates to the technical field of building construction, in particular to a sealing structure for a screw hole in an outer wall, which comprises a plugging assembly arranged in the screw hole and a sealing assembly arranged close to the outside of the screw hole; the plugging assembly comprises, from inside to outside, an inner waterproof mortar layer, a foaming agent layer and an outer waterproof mortar layer; the sealing assembly comprises, from inside to outside, a sealing block, a waterproof sealant layer and a waterproof paint layer; the outer waterproof mortar layer is arranged between the waterproof sealant layer and the waterproof paint layer; the inner waterproof mortar layer, the foaming agent layer and the outer waterproof mortar layer jointly fill the screw hole, enhance the compactness of plugging and prevent leakage; meanwhile, the sealing block, the waterproof sealant layer and the waterproof paint layer further form a sealing barrier for the screw hole in the outer wall, prevent external water such as rainwater from invading, improve the waterproof performance of the outer wall, and significantly improve the plugging quality of the screw hole in the outer wall and reduce the leakage risk of the outer wall.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a sealing structure for sealing bolt holes in external walls. Background Technology

[0002] Currently, during building construction, exterior wall formwork is typically secured using tie rods. After the formwork is removed, numerous tie rod holes are left on the exterior wall. If these holes are not properly sealed, they can easily lead to leaks, affecting the building's functionality and durability. The commonly used method for sealing these tie rod holes is with cement mortar; however, this method suffers from problems such as incomplete sealing and a tendency to crack, resulting in a significant risk of leaks and warranting improvement. Utility Model Content

[0003] In order to effectively improve the sealing quality of bolt holes in external walls and prevent leakage, this application provides a sealing structure for bolt holes in external walls.

[0004] This application provides a sealing structure for plugging and sealing bolt holes in external walls, which adopts the following technical solution:

[0005] A sealing structure for sealing bolt holes in external walls includes a sealing component disposed inside the bolt hole and a sealing component disposed near the outside of the bolt hole. The sealing component includes, from the inside out, an inner waterproof mortar layer, a foaming agent layer, and an outer waterproof mortar layer. The sealing component includes, from the inside out, a sealing block, a waterproof sealant layer, and a waterproof coating layer. The outer waterproof mortar layer is disposed between the waterproof sealant layer and the waterproof coating layer.

[0006] By adopting the above technical solution, the combined action of the inner waterproof mortar layer, the foaming agent layer, and the outer waterproof mortar layer can effectively fill the bolt holes, enhance the sealing density, and prevent leakage. At the same time, the sealing block, the waterproof sealant layer, and the waterproof coating layer further form a sealing barrier for the bolt holes in the external wall, preventing rainwater and other external moisture from intruding, thus improving the waterproof performance of the external wall. The multi-layer protection significantly improves the sealing quality of the bolt holes in the external wall and reduces the risk of leakage.

[0007] Preferably, an elastic buffer layer is provided between the sealing block and the waterproof sealant layer.

[0008] By adopting the above technical solution and utilizing the elastic buffer layer, the elastic buffer layer can effectively buffer the stress caused by factors such as thermal expansion and contraction of the wall and building settlement, thereby improving the overall durability and stability of the sealing structure.

[0009] Preferably, the elastic buffer layer is configured as a rubber pad.

[0010] By adopting the above technical solution and utilizing the rubber pad, which has good elasticity and flexibility, it can provide cushioning for the wall while also tightly fitting the inner wall of the bolt hole, thereby improving the sealing performance of the exterior wall and preventing leakage.

[0011] Preferably, the sealing block is a rubber stopper.

[0012] By adopting the above technical solution and utilizing the rubber stopper, which has good elasticity, flexibility and weather resistance, it can effectively absorb and buffer various stresses, while also playing a sealing role, further enhancing the waterproof performance of the entire sealing structure.

[0013] Preferably, a water-swellable adhesive layer is provided between the rubber stopper and the elastic buffer layer.

[0014] By adopting the above technical solution, the water-swellable adhesive layer expands when it comes into contact with water, further filling the tiny gaps between the rubber stopper and the elastic buffer layer. At the same time, it works with the rubber stopper and the elastic buffer layer to achieve dynamic sealing, enhance the sealing effect, and improve the waterproof and sealing performance of the entire sealing structure.

[0015] Preferably, a force-applying component is embedded near the outer opening of the screw hole, and the waterproof coating layer is applied to the surface of the force-applying component.

[0016] By adopting the above technical solution and utilizing the force-applying component, the force-applying component can provide a better adhesion base for the waterproof coating layer. At the same time, by applying pressure to the force-applying component, the various layers inside the screw hole can fit more tightly, thus improving the sealing effect.

[0017] Preferably, the force-applying component is configured as an annular plug, the diameter of which gradually decreases from the end furthest from the wall to the end closest to the wall until it matches the diameter of the screw hole.

[0018] By adopting the above technical solution, and utilizing the setting of the annular plug with its diameter gradually decreasing from the end away from the wall to the end closer to the wall until it matches the diameter of the screw hole, this design facilitates the installation of the annular plug by the workers, allowing the annular plug to be tightly embedded in the screw hole, improving the fit between the annular plug and the screw hole, and enhancing the sealing effect.

[0019] Preferably, the outer wall of the annular insert is symmetrically provided with rubber barbs to enhance the friction between the annular insert and the inner wall of the screw hole.

[0020] By adopting the above technical solution, the rubber barbs on the outer wall of the annular plug increase the friction and engagement force between the annular plug and the inner wall of the screw hole, making the annular plug more firmly fixed in the screw hole and less likely to fall off, thus further enhancing the sealing effect.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By utilizing the combined action of the inner waterproof mortar layer, the foaming agent layer, and the outer waterproof mortar layer, the bolt holes can be effectively filled, enhancing the tightness of the seal and preventing leakage. At the same time, the sealing block, waterproof sealant layer, and waterproof coating layer further form a sealing barrier for the bolt holes in the external wall, preventing rainwater and other external moisture from intruding, thus improving the waterproof performance of the external wall. The multi-layer protection significantly improves the sealing quality of the bolt holes in the external wall and reduces the risk of leakage in the external wall.

[0023] 2. By utilizing the water-swellable adhesive layer, the adhesive layer expands when it comes into contact with water, further filling the tiny gaps between the rubber stopper and the elastic buffer layer. At the same time, it works with the rubber stopper and the elastic buffer layer to achieve dynamic sealing, enhance the sealing effect, and improve the waterproof and sealing performance of the entire sealing structure.

[0024] 3. By utilizing the force-applying components, the force-applying components can provide a better adhesion base for the waterproof coating layer. At the same time, by applying pressure to the force-applying components, the various layers inside the screw hole can fit more tightly, improving the sealing effect. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the main overall structure in Embodiment 1 of this application;

[0026] Figure 2 This is a cross-sectional view that mainly illustrates the overall structure in Embodiment 2 of this application.

[0027] Reference numerals: 1. Inner waterproof mortar layer; 2. Foaming agent layer; 3. Outer waterproof mortar layer; 4. Rubber stopper; 5. Waterproof sealant layer; 6. Waterproof coating layer; 7. Water-swellable adhesive layer; 8. Rubber pad; 9. Annular plug; 91. Rubber barb. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0029] This application discloses a sealing structure for sealing bolt holes in external walls.

[0030] Reference Figure 1A sealing structure for sealing bolt holes in external walls includes a sealing component and a sealing component. The sealing component, from the inside out, includes an inner waterproof mortar layer 1, a foaming agent layer 2, and an outer waterproof mortar layer 3. The sealing component is located at the opening of the bolt hole and, from the inside out, includes a sealing block, a waterproof sealant layer 5, and a waterproof coating layer 6. This further forms a sealing barrier for the bolt holes in the external walls, preventing rainwater and other external moisture from intruding and improving the waterproof performance of the external walls.

[0031] Reference Figure 1 Both the inner waterproof mortar layer 1 and the outer waterproof mortar layer 3 are made of cement mortar with added waterproofing agent. The thickness of both the inner waterproof mortar layer 1 and the outer waterproof mortar layer 3 is set to 2cm, and the inner waterproof mortar layer 1 is sealed to be flush with the wall surface.

[0032] Reference Figure 1 The foaming agent layer 2 uses polyurethane foaming agent. The filling depth of the polyurethane foaming agent is 2 / 3 of the screw hole depth. After foaming, the volume expands to fill the remaining gaps. After curing, it forms an elastic filling layer, which has both sealing and buffering functions.

[0033] Reference Figure 1 The sealing block is set as a rubber plug 4 with a thickness of 3cm and a diameter slightly larger than the screw hole opening. It is inserted into the screw hole by compression. The rubber plug 4 has good elasticity, flexibility and weather resistance, which can effectively absorb and buffer various stresses, and at the same time play a sealing role, further enhancing the waterproof performance of the entire sealing structure. In addition, the rubber material has good compatibility with other components and is not prone to chemical reaction that would affect the sealing effect.

[0034] Reference Figure 1 The outer surface of the rubber stopper 4 is coated with a water-swellable adhesive layer 7, which is 1mm thick and made of polyurethane. An elastic buffer layer is bonded to the outside of the water-swellable adhesive layer 7. The water-swellable adhesive layer 7 is placed between the rubber stopper 4 and the rubber pad 8. The elastic buffer layer is a rubber pad 8 with a thickness of 3mm. The periphery of the rubber pad 8 is in close contact with the inner wall of the screw hole.

[0035] Reference Figure 1 The rubber pad 8 can effectively buffer the stress caused by factors such as thermal expansion and contraction of the wall and building settlement, prevent the waterproof sealant layer 5 and the outer waterproof mortar layer 3 from cracking due to stress concentration, and can also fit tightly against the inner wall of the screw hole, thereby improving the sealing performance of the exterior wall and preventing leakage.

[0036] Reference Figure 1 The rubber plug 4 provides basic sealing and stress buffering. The water-swellable layer expands when exposed to water to actively fill the gaps. The rubber pad 8 enhances the buffering and assists in sealing. The mutual compression between the three enhances the sealing effect and improves the waterproof and sealing performance of the entire sealing structure.

[0037] Reference Figure 1 The waterproof sealant layer 5 is made of weather-resistant silicone sealant. The waterproof sealant layer 5 is coated on the outside of the rubber pad 8. The thickness of the waterproof sealant layer 5 is 2mm, forming a continuous waterproof membrane. The outer waterproof mortar layer 3 is set between the waterproof sealant layer 5 and the waterproof coating layer 6.

[0038] Reference Figure 1 The waterproof coating layer 6 uses penetrating crystalline waterproof coating. The waterproof coating layer 6 is applied to the outside of the outer waterproof mortar layer 3 and the surrounding wall surface of the opening, with a thickness of 2mm, to form the final waterproof barrier.

[0039] The implementation principle of this application embodiment is as follows:

[0040] Step 1: Clean the dust, debris and residue inside the screw hole, ensuring the hole wall is clean and dry. Expand the hole on the outside with machinery and remove the PVC pipe from the expanded part.

[0041] Step 2: The outer surface of the rubber stopper 4 is pre-coated with a water-swellable adhesive layer 7. A rubber pad 8 is then bonded to the water-swellable adhesive layer 7. The worker presses the rubber stopper 4 coated with the water-swellable adhesive layer 7 and the rubber pad 8 into the screw hole from the outside. After pressing, the water-swellable adhesive layer 7 is in close contact with the rubber stopper 4, the rubber pad 8, and the hole wall. Polyurethane foam is injected into the inside. When the foam is full, the rubber stopper 4 is pressed into the screw hole from the inside. After the polyurethane foam has initially set, the inner cork is removed, and the inside is sealed with waterproof mortar.

[0042] Step 3: Apply weather-resistant silicone sealant to the outside of the rubber pad 8, covering the rubber pad 8 and the edges of the surrounding openings to form a continuous adhesive film.

[0043] Step 4: Apply waterproof mortar to the outer surface of the weather-resistant silicone sealant until it is flush with the wall surface.

[0044] Step 5: Apply two coats of penetrating crystalline waterproof coating to the outside of the outer waterproof mortar and the wall around the opening.

[0045] Example 2:

[0046] The difference between Example 2 and Example 1 is that:

[0047] Reference Figure 2A force-applying component is embedded near the outer opening of the screw hole. In this embodiment, the force-applying component is a PVC annular plug 9. The diameter of the annular plug 9 gradually decreases from the outside to the inside to match the diameter of the screw hole. This design facilitates the installation of the annular plug 9 by the operator and allows the annular plug 9 to be tightly embedded in the screw hole, improving the fit between the annular plug 9 and the screw hole, enhancing the sealing effect, and also helping to disperse the pressure on the annular plug 9, making it more securely installed in the screw hole.

[0048] Reference Figure 2 The outer wall of the annular plug 9 is symmetrically provided with rubber barbs 91, and there are multiple rings of rubber barbs 91. The annular plug 9 is pressed into the opening of the screw hole by external force. The rubber barbs 91 are engaged and fixed with the hole wall, which increases the friction and engagement force between the annular plug 9 and the inner wall of the screw hole, making the annular plug 9 more firmly fixed in the screw hole and less likely to fall off, thus further enhancing the sealing effect.

[0049] Reference Figure 2 The waterproof coating layer 6 is applied to the surface of the annular plug 9 and the surrounding wall of the opening, with a thickness of 2mm, forming the final waterproof barrier. The annular plug 9 can provide a better adhesion base for the waterproof coating layer 6. At the same time, by applying pressure to the annular plug 9, the various layers inside the screw hole can fit more tightly, improving the sealing effect.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing structure for plugging bolt holes in external walls, characterized in that: The sealing assembly is arranged near the outer part of the screw hole and comprises a sealing block, a waterproof sealant layer (5) and a waterproof coating layer (6) from inside to outside.

2. The outer wall screw hole sealing structure according to claim 1, characterized in that: An elastic buffer layer is arranged between the sealing block and the waterproof sealant layer (5).

3. The outer wall screw hole sealing structure according to claim 2, characterized in that: The elastic buffer layer is arranged as a rubber pad (8).

4. The outer wall screw hole sealing structure according to claim 2, characterized in that: The sealing block is arranged as a rubber plug (4).

5. The exterior wall screw hole plugging and sealing structure according to claim 4, characterized in that: A water-swelling adhesive layer (7) is arranged between the rubber plug (4) and the elastic buffer layer.

6. The exterior wall screw hole plugging and sealing structure according to claim 1, characterized in that: A force applying member is embedded near the outer opening of the screw hole, and the waterproof coating layer (6) is coated on the surface of the force applying member.

7. The exterior wall screw hole sealing structure according to claim 6, characterized in that: The force applying member is arranged as an annular plug (9), and the diameter of the annular plug (9) gradually decreases from the end far away from the wall surface to the end close to the wall surface until the diameter of the annular plug (9) is adapted to the diameter of the screw hole.

8. The exterior wall screw hole sealing structure according to claim 7, characterized in that: The outer wall of the annular plug (9) is symmetrically provided with rubber barbs (91) for enhancing the friction between the annular plug and the inner wall of the screw hole.

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