Water-leakage-proof sleeve structure for post-punching and pipe-penetrating of concrete outer wall

Abstract

The utility model discloses a water leakage prevention sleeve structure for post-punching and pipe penetrating of a concrete outer wall. A circular truncated cone hole is formed in the pipe penetrating position of the concrete side wall, the diameter of the circular hole in the outer wall surface of the concrete side wall is D + 20 mm, the diameter of the circular hole in the inner wall surface of the concrete side wall is D + 60 mm, a galvanized steel pipe penetrates through the hole, the two ends of the outer wall of the galvanized steel pipe are provided with threads, and the outer wall of the galvanized steel pipe is wrapped with waterproof sealant with the thickness of 20 mm. An outer water-swelling water stop ring is installed at the intersection of the outer wall of the galvanized steel pipe and the outer wall skin of the concrete side wall, a water stop pressure ring with the thickness of 10 mm is installed on the outer side of the outer water-swelling water stop ring, an inner water-swelling water stop ring is installed at the intersection of the outer wall of the galvanized steel pipe and the inner wall skin of the concrete side wall, and a pressure flange ring is installed on the outer side of the inner water-swelling water stop ring. The pressure flange ring is fastened through a flange bolt. According to the utility model, the situation that water leaks after the underground concrete side wall of the existing building is holed can be obviously changed.

Description

Technical Field

[0001] This utility model relates to the field of building renovation and expansion, and more specifically, to a waterproof sleeve structure for drilling holes in concrete exterior walls and inserting pipes. Background Technology

[0002] During the construction, renovation, or expansion of buildings, it is common to drill holes in underground concrete exterior walls to install pipes. Without special treatment, drilling holes in existing concrete walls for pipe installation allows groundwater to seep through the gaps between the pipes and the concrete walls, potentially leading to significant water intrusion over time and affecting the normal use of the building. In cases where drilling holes in underground concrete exterior walls for pipe installation is not feasible due to the lack of pre-embedded waterproofing sleeves within the concrete wall, in most cases, simply applying a ring of waterproofing sealant around the sleeve is sufficient, which provides almost no waterproofing effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a waterproof sleeve structure for drilling holes and inserting pipes in concrete exterior walls.

[0004] This utility model discloses a waterproof sleeve structure for drilling holes in concrete exterior walls to insert pipes. The structure is achieved through the following technical solution: a circular opening is made in the concrete sidewall at the pipe insertion location. The diameter of the circular opening on the outer surface of the concrete sidewall is D+20mm, and the diameter on the inner surface is D+60mm. A galvanized steel pipe with a diameter of D passes through the opening. Both ends of the galvanized steel pipe are threaded. The outer wall of the galvanized steel pipe is coated with a 20mm thick layer of waterproof sealant. An external water-swellable sealing ring is installed at the intersection of the outer wall of the galvanized steel pipe and the outer surface of the concrete sidewall. A thick water-swellable pressure ring is installed outside the external water-swellable sealing ring. An internal water-swellable sealing ring is installed at the intersection of the outer wall of the galvanized steel pipe and the inner surface of the concrete sidewall. A pressure flange ring is installed outside the internal water-swellable sealing ring. The pressure flange ring is secured with flange bolts.

[0005] A galvanized steel pipe with a wall thickness of 10mm passes through the opening.

[0006] A 10mm thick water-swellable sealing ring is installed on the outside of the external water-expanding sealing ring, and the water-swellable sealing ring is installed by thread.

[0007] A 10cm thick pressure flange ring is installed on the outside of the inner water-swellable sealing ring, and the pressure flange ring is installed by thread.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] This invention can significantly improve the situation of water leakage after opening holes in the underground concrete sidewalls of existing buildings. It combines the dual functions of a water-swellable sealing strip and a pressure ring, providing three layers of waterproofing. This allows even newly poured, pre-embedded water-stopping sleeves to achieve the same water-stopping effect as pipes inserted through newly opened holes. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional view of the structure of this utility model. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this utility model pertains. The terminology used in this specification of the utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

[0013] This utility model is as follows Figure 1-2 As shown, a circular opening 2 is made on the concrete sidewall 1 at the pipe penetration location. The diameter of the circular opening on the outer wall of the concrete sidewall is D+20mm, and the diameter on the inner wall of the concrete sidewall is D+60mm. A galvanized steel pipe with a wall thickness of 10mm and a diameter of D passes through the opening. Both ends of the galvanized steel pipe are threaded. The outer wall of the galvanized steel pipe is wrapped with a 20mm thick waterproof sealant. An external water-swellable sealing ring 3 is installed at the intersection of the outer wall of the galvanized steel pipe and the outer wall of the concrete sidewall. A 10mm thick water-swellable pressure ring 4 is installed outside the external water-swellable sealing ring. An internal water-swellable sealing ring 5 is installed at the intersection of the outer wall of the galvanized steel pipe and the inner wall of the concrete sidewall. A 10cm thick pressure flange ring 6 is installed outside the internal water-swellable sealing ring. The pressure flange ring is fastened with flange bolts.

[0014] The implementation process of this utility model is as follows:

[0015] First, a circular hole of D+20mm is drilled in the concrete sidewall according to the pipe diameter (D). Then, a triangular head drill is used to grind the hole a second time, forming a frustum-shaped opening that is smaller on the outside and larger on the inside. A 10mm thick galvanized steel pipe is then inserted into the hole. Both ends of the galvanized steel pipe are threaded, and the outer wall is coated with a 20mm thick layer of waterproof sealant. During the drilling process, the sealant, under pressure, tightly fills the space between the steel pipe and the opening. Finally, a 10mm thick water-stop pressure ring (threaded installation) is installed on the outside, and a 10cm pressure flange ring (threaded installation) is installed on the inside. Then, by tightening the self-tapping bolts on the inner flange, the pressure on the inner and outer pressure flanges is increased, squeezing the annular water-swellable sealing ring between the pressure plate and the concrete sidewall. This ensures a tight connection between the inner and outer sealing rings and the concrete and pressure plate. After the connection is completed, groundwater will have difficulty penetrating into the outer sealing ring. Even if it does seep in, the inner triangular waterproof sealant will act as a second layer of water stop, and the inner sealing ring of the concrete sidewall will act as a third layer of water stop. With the three layers of waterproofing, groundwater can be largely prevented from entering the inner side of the concrete structure.

[0016] The above description is only a preferred embodiment of the present utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A leak-proof sleeve structure for drilling holes and inserting pipes in a concrete exterior wall, characterized in that, A circular opening is made in the concrete sidewall at the location where the pipe will pass through. The diameter of the circular opening is D+20mm on the outer surface of the concrete sidewall, and D+60mm on the inner surface. A galvanized steel pipe with a diameter of D passes through the opening. Both ends of the galvanized steel pipe are threaded. The outer wall of the galvanized steel pipe is coated with a 20mm thick layer of waterproof sealant. An external water-swellable sealing ring is installed at the intersection of the outer wall of the galvanized steel pipe and the outer surface of the concrete sidewall. A water-swellable pressure ring is installed outside the external water-swellable sealing ring. An internal water-swellable sealing ring is installed at the intersection of the outer wall of the galvanized steel pipe and the inner surface of the concrete sidewall. A pressure flange ring is installed outside the internal water-swellable sealing ring. The pressure flange ring is fastened with flange bolts.

2. The waterproof sleeve structure for drilling holes and inserting pipes in concrete exterior walls according to claim 1, characterized in that, A galvanized steel pipe with a wall thickness of 10mm passes through the opening.

3. The waterproof sleeve structure for drilling holes and inserting pipes in concrete exterior walls according to claim 1, characterized in that, A 10mm thick water-swellable sealing ring is installed on the outside of the external water-expanding sealing ring, and the water-swellable sealing ring is installed by thread.

4. The waterproof sleeve structure for drilling holes and inserting pipes in concrete exterior walls according to claim 1, characterized in that, A 10cm thick pressure flange ring is installed on the outside of the inner water-swellable sealing ring, and the pressure flange ring is installed by thread.

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