Wall body rear opening through-wall pipe waterproof device

Abstract

The waterproof device comprises two sealing assemblies, each sealing assembly comprises a sealing disc and a rubber mat which are stacked together, the rubber mat is located on the inner side of the sealing disc, a first grouting hole and a first grout overflow hole are formed in the sealing disc of one sealing assembly, and a second grouting hole and a second grout overflow hole are formed in the sealing disc of the other sealing assembly. A second grouting hole and a second grout overflow hole are formed in the rubber mat, the first grouting hole corresponds to the second grouting hole and corresponds to a gap between the through-wall pipe and the inner wall of the rear opening hole, and the first grout overflow hole corresponds to the second grout overflow hole and corresponds to a gap between the through-wall pipe and the inner wall of the rear opening hole. The waterproof device is installed at the two ends of the hole, the single-component polyurethane waterproof coating is injected through the grouting holes, and a closed waterproof film is formed with the through-wall pipe and the hole wall through the binding force and the permeability of the coating, so that an external water source is isolated; and meanwhile, the flexible characteristic of the cured single-component polyurethane waterproof coating can effectively prevent hole leakage caused by deformation generated by vibration of the pipeline.

Description

Technical Field

[0001] This utility model relates to a waterproof construction technology, specifically a waterproof device for a wall-penetrating pipe with a back opening in the exterior wall. Background Technology

[0002] During the construction of underground concrete structures, due to the negligence of construction workers, pipes may be left behind or added to the walls after construction is completed. This requires drilling holes in the completed concrete structure. For these holes, waterproofing treatment is required at the pipe penetration points. Currently, rigid waterproofing measures, such as filling with waterproof concrete, are commonly used. However, after long-term use, surface shrinkage can easily cause cracks, leading to leakage. Utility Model Content

[0003] The purpose of this utility model is to provide a waterproof device for wall-penetrating pipes with back openings, so as to solve the problem that existing wall-penetrating pipes using rigid waterproofing measures are prone to cracking and leakage.

[0004] This utility model is implemented as follows: A waterproof device for a wall-mounted through-wall pipe with a rear opening includes two sealing components. Each sealing component includes a sealing disc and a rubber gasket stacked together. The rubber gasket is located inside the sealing disc. A first central hole is formed in the center of the sealing disc, and a second central hole is formed in the center of the rubber gasket. A first connecting hole is formed on the sealing disc, and a second connecting hole is formed on the rubber gasket. The first connecting hole and the second connecting hole correspond to each other. A first grouting hole and a first overflow hole are formed on the sealing disc of one of the sealing components, and a second grouting hole and a second overflow hole are formed on the rubber gasket. The first grouting hole and the second grouting hole correspond to the gap between the through-wall pipe and the inner wall of the rear opening, and the first overflow hole and the second overflow hole correspond to the gap between the through-wall pipe and the inner wall of the rear opening.

[0005] Furthermore, the diameter of the second central hole is smaller than the diameter of the first central hole, and the inner ring portion of the rubber pad protrudes inward to form a rubber ring.

[0006] Furthermore, a first hollow column and a second hollow column are respectively provided at the first grouting hole and the first overflow hole. The first hollow column extends through the second grouting hole into the inner side of the sealing plate, and the second hollow column extends through the second overflow hole into the inner side of the sealing plate. Several through holes are respectively opened on the first hollow column and the second hollow column.

[0007] Furthermore, there are several of the first connecting holes and the second connecting holes, and they are evenly distributed along the circumferential direction.

[0008] Furthermore, the first grouting hole and the second grouting hole are located below the first central hole and the second central hole, and the first overflow hole and the second overflow hole are located above the first central hole and the second central hole.

[0009] Furthermore, a connector, such as an expansion screw or an anchor, is inserted into the first and second connecting holes.

[0010] This utility model also discloses a method for waterproofing construction by injecting grout after opening a hole in the wall and inserting a through-wall pipe, which includes the following steps.

[0011] a. Drill holes in the wall using a drilling device to indicate the location of the through-wall pipe.

[0012] b. Treat the post-drilled holes.

[0013] c. Install a sealing assembly at each end of the rear-opening hole. The sealing assembly includes a sealing disc and a gasket stacked together. The gasket is located inside the sealing disc. A first central hole is formed in the center of the sealing disc, and a second central hole is formed in the center of the gasket. A first connecting hole is formed on the sealing disc, and a second connecting hole is formed on the gasket. The first connecting hole and the second connecting hole correspond to each other. A first grouting hole and a first overflow hole are formed on the sealing disc of one of the sealing assemblies. A second grouting hole and a second overflow hole are formed on the gasket. The first grouting hole and the second grouting hole correspond to each other and correspond to the gap between the through-wall pipe and the inner wall of the rear-opening hole. The first overflow hole and the second overflow hole correspond to each other and correspond to the gap between the through-wall pipe and the inner wall of the rear-opening hole.

[0014] d. Install the through-wall pipe, which passes through the first and second center holes of the two sealing components and through the rear opening, and secures the two sealing components.

[0015] e. Inject polyurethane waterproof coating into the grouting hole until the grout flows out from the overflow port, filling the gap between the through-wall pipe and the inner wall of the later-opened hole tightly.

[0016] f. Seal the grouting holes and overflow holes.

[0017] Furthermore, in step b, after the hole is made, the hole walls within 3 cm of the opening on both sides are roughened, and then the hole walls are cleaned.

[0018] Furthermore, in step c, a sealing assembly with a grouting hole and an overflow hole is disposed on the inner side of the wall, with the grouting hole located on the lower side of the through-wall pipe.

[0019] Furthermore, in step d, connectors are inserted into the first and second connecting holes to fix the two sealing components to the wall surface.

[0020] This utility model is easy to use and has a simple structure. A sealing component is installed on the inner and outer sides of the wall, and a grouting hole is left on one side of the sealing component. After installation, a single-component polyurethane waterproof coating is injected. Through the adhesion and penetration of the coating, a closed waterproof membrane is formed with the wall-penetrating pipe and the hole wall, isolating the external water source. At the same time, the flexible characteristics of the single-component polyurethane waterproof coating after curing can effectively prevent leakage from the holes caused by pipe vibration and deformation. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the present invention.

[0022] Figure 2 This is a plan view of the present invention.

[0023] Figure 3 This is a plan view of the sealing disc of this utility model.

[0024] Figure 4 This is a plan view of the adhesive pad of this utility model.

[0025] In the diagram: 1. Wall; 2. Post-opening hole; 3. Sealing component; 4. Grouting material; 5. Connector; 6. Through-wall pipe; 3-1. Sealing disc; 3-2. Rubber gasket; 3-3. First grouting hole; 3-4. First overflow hole; 3-5. Second grouting hole; 3-6. Second overflow hole; 3-7. First connecting hole; 3-8. Second connecting hole; 3-9. Rubber ring; 3-10. First center hole; 3-11. Second center hole; 3-12. First hollow column; 3-13. Second hollow column. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1

[0029] like Figure 1 , Figure 2 as well as Figure 3 As shown, this embodiment is a waterproofing device for a wall-mounted through-wall pipe with a rear opening. The waterproofing device includes two sealing components 3, which are respectively installed at the openings at both ends of the rear opening 2.

[0030] The sealing assembly 3 specifically includes a sealing disc 3-1 and a gasket 3-2 stacked together. The gasket 3-2 is located inside the sealing disc 3-1, which is generally made of metal. A first central hole 3-10 is formed in the center of the sealing disc 3-1, and a second central hole 3-11 is formed in the center of the gasket 3-2. During installation, the first central hole 3-10 and the second central hole 3-11 are arranged concentrically.

[0031] The diameter of the second central hole 3-11 is smaller than the diameter of the first central hole 3-10, and the inner ring of the rubber gasket 3-2 protrudes inward to form a rubber ring 3-9. When the through-wall pipe 6 is inserted, the through-wall pipe 6 passes through the inner tube of the first central hole 3-10 and the second central hole 3-11. The diameter of the through-wall pipe 6 is smaller than the diameter of the first central hole 3-10 and slightly larger than the diameter of the second central hole 3-11, so that the through-wall pipe 6 can pass smoothly through the sealing disc 3-1. At the same time, the outer wall of the through-wall pipe 6 squeezes the rubber ring 3-9 to ensure the sealing between the outer wall of the through-wall pipe 6 and the rubber gasket 3-2.

[0032] To facilitate the fixing of the sealing assembly 3, a plurality of first connecting holes 3-7 are provided on the sealing disc 3-1, and a plurality of second connecting holes 3-8 are provided on the rubber gasket 3-2. The positions of the first connecting holes 3-7 and the second connecting holes 3-8 correspond to each other, and there are at least two of each of the first connecting holes 3-7 and the second connecting holes 3-8. In this embodiment, there are four of each of the first connecting holes 3-7 and the second connecting holes 3-8, and the first connecting holes 3-7 and the second connecting holes 3-8 are evenly distributed along the circumferential direction.

[0033] During installation, a connector 5 is inserted into the first connecting hole 3-7 and the second connecting hole 3-8. The sealing plate 3-1 and the rubber gasket 3-2 are fixed to the surface of the wall 1 and the rubber gasket 3-2 is pressed tightly by the connector 5. The connector 5 is an expansion screw or an anchor.

[0034] In addition to sealing the opening through the sealing component 3, the main sealing also relies on the grout 4 injected into the gap. To facilitate the injection of the grout 4, a first grouting hole 3-3 and a first overflow hole 3-4 are provided on the sealing disc 3-1 of one of the sealing components 3. A second grouting hole 3-5 and a second overflow hole 3-6 are provided on the rubber gasket 3-2 of the sealing component 3. The first grouting hole 3-3 corresponds to the second grouting hole 3-5 and corresponds to the gap between the through-wall pipe 6 and the inner wall of the rear opening 2. The first overflow hole 3-4 corresponds to the second overflow hole 3-6 and corresponds to the gap between the through-wall pipe 6 and the inner wall of the rear opening 2. The grout 4 is injected into the gap between the through-wall pipe 6 and the inner wall of the rear opening 2 through the first grouting hole 3-3 and the second grouting hole 3-5. After filling, the grout 4 overflows from the overflow hole.

[0035] Specifically, a first hollow column 3-12 and a second hollow column 3-13 are respectively provided at the first grouting hole 3-3 and the first overflow hole 3-4. The first hollow column 3-12 extends through the second grouting hole 3-5 into the inner side of the sealing plate 3-1, and the second hollow column 3-13 extends through the second overflow hole 3-6 into the inner side of the sealing plate 3-1. Several through holes are respectively opened on the first hollow column 3-12 and the second hollow column 3-13.

[0036] On the one hand, the first hollow column 3-12 is used to insert the grouting pipe and guide the grouting material 4 into the gap between the through-wall pipe 6 and the inner wall of the rear opening 2. On the other hand, the hollow cavity of the first hollow column 3-12 is easy to seal, and a cylinder can be inserted to seal the grouting hole 4.

[0037] The through hole on the second hollow column 3-13 has a smaller diameter, which can block the grouting material 4 to a certain extent, so that the grouting material 4 fills the gap between the through-wall pipe 6 and the inner wall of the rear opening 2 and then overflows through the overflow hole. In addition, the hollow cavity of the second hollow column 3-13 is also easy to seal, and a cylinder can be inserted to seal the overflow hole.

[0038] The first grouting hole 3-3 and the second grouting hole 3-5 are located below the first central hole 3-10 and the second central hole 3-11, while the first overflow hole 3-4 and the second overflow hole 3-6 are located above the first central hole 3-10 and the second central hole 3-11. This allows the grout 4 to gradually fill the gap between the through-wall pipe 6 and the inner wall of the rear-opening hole 2 from the lower part to the upper part, ensuring the tightness of the gap filling between the through-wall pipe 6 and the inner wall of the rear-opening hole 2.

[0039] Example 2

[0040] This embodiment is a method for waterproofing construction by injecting grout after creating a hole in the wall to allow the pipe to pass through it, which includes the following steps.

[0041] a. Drill hole 2 on wall 1 at the location of the additional through-wall pipe 6 using a drilling device.

[0042] b. Treat the post-opening hole 2.

[0043] c. Install a sealing assembly 3 at each of the two ends of the rear-opening hole 2. The sealing assembly 3 includes a sealing disc 3-1 and a rubber gasket 3-2 stacked together. The rubber gasket 3-2 is located inside the sealing disc 3-1. A first central hole 3-10 is opened in the center of the sealing disc 3-1, and a second central hole 3-11 is opened in the center of the rubber gasket 3-2. A first connecting hole 3-7 is opened on the sealing disc 3-1, and a second connecting hole 3-8 is opened on the rubber gasket 3-2. Corresponding to the second connecting hole 3-8; a first grouting hole 3-3 and a first overflow hole 3-4 are provided on the sealing disc 3-1 of one of the sealing components 3, and a second grouting hole 3-5 and a second overflow hole 3-6 are provided on the rubber gasket 3-2. The first grouting hole 3-3 corresponds to the second grouting hole 3-5 and corresponds to the gap between the through-wall pipe 6 and the inner wall of the rear opening 2. The first overflow hole 3-4 corresponds to the second overflow hole 3-6 and corresponds to the gap between the through-wall pipe 6 and the inner wall of the rear opening 2.

[0044] d. Install the through-wall pipe 6, which passes through the first center hole 3-10 and the second center hole 3-11 of the two sealing components 3 and through the rear opening 2 to fix the two sealing components 3.

[0045] e. Inject polyurethane waterproof coating into the grouting hole 4 until the grout flows out from the overflow port, filling the gap between the through-wall pipe 6 and the inner wall of the rear-opening hole 2 tightly.

[0046] Considering the vibrations that occur during pipeline use, the polyurethane waterproof coating, after curing, is flexible, has high tensile strength and high elongation, which can effectively reduce the risk of leakage.

[0047] f. Seal the grouting hole 4 and the overflow hole.

[0048] In step b, after the hole is made, the walls within 3 cm of the opening on both sides are roughened to increase the contact area, and then the walls are cleaned.

[0049] In step c, a sealing assembly 3 with a grouting hole 4 and an overflow hole is installed on the inner side of the wall 1, and the grouting hole 4 is located on the lower side of the through-wall pipe 6.

[0050] In step d, connector 5 is inserted into the first connecting hole 3-7 and the second connecting hole 3-8, and the two sealing components 3 are fixed to the surface of the wall 1 by connector 5.

[0051] This utility model is easy to use and has a simple structure. A sealing component 3 is installed on the inner and outer sides of the wall 1, and a grouting hole 4 is left on one side of the sealing component 3. After installation, a single-component polyurethane waterproof coating is injected. Through the adhesion and penetration of the coating, a closed waterproof membrane is formed with the wall-penetrating pipe 6 and the hole wall to isolate external water sources. At the same time, the flexible characteristics of the single-component polyurethane waterproof coating after curing can effectively prevent leakage caused by the deformation of the pipe due to vibration.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A waterproofing device for a through-wall pipe with a hole in the back of the wall, characterized in that, The device includes two sealing assemblies. Each sealing assembly comprises a sealing disc and a gasket stacked together. The gasket is located inside the sealing disc. A first central hole is formed at the center of the sealing disc, and a second central hole is formed at the center of the gasket. A first connecting hole is formed on the sealing disc, and a second connecting hole is formed on the gasket. The first connecting hole and the second connecting hole correspond to each other. A first grouting hole and a first overflow hole are formed on the sealing disc of one of the sealing assemblies, and a second grouting hole and a second overflow hole are formed on the gasket. The first grouting hole and the second grouting hole correspond to each other and correspond to the gap between the through-wall pipe and the inner wall of the rear-opening hole. The first overflow hole and the second overflow hole correspond to each other and correspond to the gap between the through-wall pipe and the inner wall of the rear-opening hole.

2. The waterproofing device for a wall-penetrating pipe with a hole behind the wall as described in claim 1, characterized in that, The diameter of the second central hole is smaller than the diameter of the first central hole, and the inner ring portion of the rubber pad protrudes inward to form a rubber ring.

3. The waterproofing device for a wall-penetrating pipe with a hole behind the wall according to claim 1, characterized in that, A first hollow column and a second hollow column are respectively provided at the first grouting hole and the first overflow hole. The first hollow column extends into the sealing plate through the second grouting hole, and the second hollow column extends into the sealing plate through the second overflow hole. Several through holes are respectively opened on the first hollow column and the second hollow column.

4. The waterproofing device for a wall-penetrating pipe with a hole behind the wall according to claim 1, characterized in that, There are several of the first connecting holes and the second connecting holes, and they are evenly distributed along the circumference.

5. The waterproofing device for a wall-penetrating pipe with a hole behind the wall according to claim 1, characterized in that, The first grouting hole and the second grouting hole are located below the first central hole and the second central hole, and the first overflow hole and the second overflow hole are located above the first central hole and the second central hole.

6. The waterproofing device for a wall-penetrating pipe with a hole behind the wall according to claim 1, characterized in that, A connector, such as an expansion screw or an anchor, is inserted into the first and second connecting holes.

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