Waterproof sleeve connecting node

By setting an annular groove inside the pre-embedded sleeve and an annular clip on the outer wall of the pipe installation section, combined with expansion strips and sealing bodies, the leakage risk and construction complexity in the waterproofing treatment of pre-embedded pipes are solved, achieving efficient waterproofing and simplified construction.

CN224150332UActive Publication Date: 2026-04-21CHINA CONSTR SECOND ENG BUREAU LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR SECOND ENG BUREAU LTD
Filing Date
2025-06-11
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing waterproofing technologies for pre-embedded pipes suffer from high leakage risks, complex construction processes, and unsatisfactory results.

Method used

Waterproof sleeves are used to connect the nodes. By setting an annular groove in the pre-embedded sleeve and an annular clip on the outer wall of the pipe installation section, expansion strips are used to stop the water in the gaps, and sealing bodies are filled in the gaps to form an effective seal.

Benefits of technology

It significantly reduces the risk of leakage, simplifies the construction process, improves waterproofing effect, and enhances construction efficiency and quality.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224150332U_ABST
    Figure CN224150332U_ABST
Patent Text Reader

Abstract

The utility model discloses a waterproof casing pipe connecting node which comprises a building main body, embedded casing pipes and pipeline mounting sections, a plurality of embedded casing pipes are embedded in the building main body, and pipelines assembled by a plurality of pipeline mounting sections are mounted in the embedded casing pipes. The sealing structure is characterized in that the pipeline mounting section is connected with the embedded sleeve in an anti-leakage manner through a sealing assembly, and a gap between the pipeline mounting section and the embedded sleeve is filled with a sealing body; the plugging assembly comprises an annular groove formed in the inner wall of the embedded sleeve and an annular clamp arranged on the outer wall of the pipeline installation section, the annular clamp is tightly connected to the annular groove in a clamped mode, and the annular clamp is connected with the annular groove through a reinforcing piece. The joint forms a combined sealing form of the plugging assembly and the filling body, and the seepage-proofing and water-stopping effects are remarkable.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a waterproof sleeve connection node. Background Technology

[0002] In the construction industry, waterproofing of embedded pipe installation joints in floor slabs and walls is crucial. Leaks around these joints can cause dampness in indoor spaces, affecting indoor air quality and negatively impacting the health of residents. Long-term seepage can lead to rust in the reinforcing steel of concrete structures, causing concrete expansion and cracking, reducing the building's load-bearing capacity and stability. Once leaks occur at embedded pipe installation joints, subsequent repairs are not only cumbersome but also costly; if leaks recur, repair costs will continue to rise. Furthermore, leaks may affect neighboring residents or areas, leading to disputes and compensation issues, further increasing building maintenance costs and management difficulties.

[0003] Currently, the conventional waterproofing method involves installing water-stop rings or other water-stopping measures at the contact surface between the pre-embedded pipe section and the concrete. However, this approach has two drawbacks. First, simply installing water-stopping measures at the contact surface between the pre-embedded pipe section and the concrete means that during later installation, there is no effective treatment between the later-installed pipe section and the interior of the pre-embedded pipe section, making it difficult to form a proper seal and resulting in poor waterproofing and easy leakage. Second, when installing later-installed pipe sections at the pre-embedded pipe section, formwork is required for sealing. This formwork construction process is complex, and due to variations in construction quality, it is difficult to guarantee a proper seal, resulting in a poor overall effect. Once leakage occurs, subsequent treatment is extremely cumbersome, and leakage is prone to recurrence, seriously affecting the waterproofing performance and functionality of the building.

[0004] In view of the shortcomings of the prior art, this application provides a waterproof sleeve connection node to solve the problems of high leakage risk, complex construction and poor effect of the pre-embedded pipe waterproofing treatment technology in the existing waterproofing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof sleeve connection node, which solves the problem of leakage risk in the existing waterproofing technology for pre-embedded pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A waterproof sleeve connection node includes a building body, a pre-embedded sleeve, and a pipe installation section. Multiple pre-embedded sleeves are pre-embedded in the building body, and a pipe assembled from multiple pipe installation sections is installed in the pre-embedded sleeve. The pipe installation section and the pre-embedded sleeve are connected to prevent leakage by a sealing component, and a sealing body is filled in the gap between the pipe installation section and the pre-embedded sleeve.

[0008] The sealing assembly includes an annular groove disposed on the inner wall of the pre-embedded sleeve and an annular clip disposed on the outer wall of the pipe installation section. The annular clip is tightly engaged with the annular groove and connected to the annular groove by a reinforcement component.

[0009] Preferably, a water-stop ring is provided on the outer wall of the pre-embedded sleeve, and the water-stop ring is cast into connection with the main building structure.

[0010] Preferably, the main body of the annular groove is annular, the outer ring of the annular groove is fixedly installed on the inner wall of the pre-embedded sleeve, and multiple installation grooves are evenly spaced on the outer ring of the annular groove.

[0011] Preferably, the mounting groove is U-shaped, and a first connecting ring is provided on the inner side of the mounting groove.

[0012] Preferably, the main body of the ring clip is ring-shaped, the inner ring clip is fixedly installed on the outer wall of the pipe installation section, and multiple installation hooks are evenly spaced on the outer ring clip.

[0013] Preferably, the mounting hook is inverted U-shaped, with an expansion strip fitted inside the mounting hook, and a second connecting ring provided on the inner side of the mounting hook.

[0014] Preferably, the first connecting ring and the second connecting ring are connected by the reinforcing member, which is made of galvanized iron wire.

[0015] In this invention, an annular groove is set inside the pre-embedded pipe, and an annular clip is set around the pipe installation section. During installation, the two are directly snapped together and fixed. The expansion strip on the contact surface is used to stop the gap, which further improves the water-stopping effect and effectively reduces the risk of leakage.

[0016] Meanwhile, the snap-fitted annular wing ring, i.e., the annular groove and the annular clip, can serve as the bottom mold of the suspended formwork, facilitating the filling operation of the filler. There is no need to use a separate suspended formwork for pouring the filler; the filling operation can be carried out directly, achieving rapid molding and improving construction efficiency and waterproofing quality.

[0017] The gap between the pre-embedded sleeve and the pipe installation section forms an effective seal, namely the combination of sealing components and filler, which has a significant effect on preventing seepage and stopping water. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of part of the structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Top view;

[0021] Figure 4 This is a schematic diagram of the interlocking process between the annular groove and the annular clip of this utility model;

[0022] Figure 5 This is a schematic diagram of the interlocking of the annular groove and the annular clip of this utility model;

[0023] Figure 6 This is a schematic diagram of the annular groove structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the ring card structure of this utility model;

[0025] In the diagram: 1. Main building structure; 2. Embedded sleeve; 3. Pipe installation section; 4. Sealing component; 5. Water-stop ring; 6. Sealing body; 40. Annular groove; 41. Annular clip; 42. Reinforcing component; 400. Installation groove; 401. First connecting ring; 410. Installation hook; 411. Expansion strip; 412. Second connecting ring. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1 to 7 The waterproof sleeve connection node shown includes a building body 1, a pre-embedded sleeve 2 and a pipe installation section 3. Multiple pre-embedded sleeves 2 are pre-embedded in the building body 1, and a water-stop ring 5 is provided on the outer wall of the pre-embedded sleeve 2. The water-stop ring 5 is cast and connected to the building body 1.

[0028] A pipe, assembled from multiple pipe installation sections 3, is installed inside the pre-embedded sleeve 2. The pipe installation sections 3 and the pre-embedded sleeve 2 are connected to prevent leakage via a sealing component 4, and a sealing body 6 fills the gap between the pipe installation sections 3 and the pre-embedded sleeve 2. The diameter of the pre-embedded sleeve 2 is 150mm larger than the diameter of the pipe installation sections 3. Both ends of the pipe installation sections 3 are threaded, facilitating the connection and assembly of the pipe installation sections 3 into a pipe. The sealing body 6 can be made of asphalt-impregnated hemp fiber.

[0029] The sealing assembly 4 includes an annular groove 40 located on the inner wall of the pre-embedded sleeve 2 and an annular clip 41 located on the outer wall of the pipe installation section 3. The annular clip 41 is tightly engaged with the annular groove 40 and connected to the annular groove 40 by a reinforcing member 42. In this example, the annular groove 40 is 40 mm wide.

[0030] The main body of the annular groove 40 is annular. The outer ring of the annular groove 40 is fixedly installed on the inner wall of the pre-embedded sleeve 2. Multiple mounting grooves 400 are evenly spaced on the outer ring of the annular groove 40. In this example, the width of the annular groove 40 is 35mm. There are four, six, or eight mounting grooves 400. The mounting grooves 400 are U-shaped, and a first connecting ring 401 is provided on the inner side of the mounting grooves 400.

[0031] The main body of the ring clip 41 is ring-shaped. The inner ring of the ring clip 41 is fixedly installed on the outer wall of the pipe installation section 3. Multiple installation hooks 410 are evenly spaced on the outer ring of the ring clip 41. The number of installation hooks 410 is consistent with the number and position of the installation grooves 400, and their shapes are compatible.

[0032] The mounting hook 410 is inverted U-shaped. An expansion strip 411 is attached to the inside of the mounting hook 410 by adhesive. A second connecting ring 412 is provided on the inner side of the mounting hook 410.

[0033] The first connecting ring 401 and the second connecting ring 412 are connected by a reinforcing member 42, which is bent at both ends to achieve a fixed connection between the first connecting ring 401 and the second connecting ring 412. The reinforcing member 42 is ultimately U-shaped. The reinforcing member 42 is made of galvanized iron wire.

[0034] The entire node installation process is as follows:

[0035] Fixed pre-embedded sleeve 2 → Pour concrete for main building 1 → Clean pre-embedded sleeve 2 → Place pipe installation section 3 → Align installation hook 410 with installation groove 400 and snap it in place → Reinforcement part 42 passes through the first connecting ring 401 and the second connecting ring 412 and bends both ends of reinforcement part 42 → Fill the gap between pipe installation section 3 and pre-embedded sleeve 2 with sealing body 6 → Complete.

[0036] The above embodiments are merely illustrative of the concept and implementation of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical solutions without substantial changes are still within the scope of protection.

Claims

1. A waterproof sleeve connection node, comprising a building body (1), a pre-embedded sleeve (2), and a pipe installation section (3), wherein multiple pre-embedded sleeves (2) are pre-embedded within the building body (1), and a pipe assembled from multiple pipe installation sections (3) is installed within the pre-embedded sleeves (2), characterized in that: The pipe installation section (3) and the pre-embedded sleeve (2) are connected by a sealing component (4) to prevent leakage, and a sealing body (6) is filled in the gap between the pipe installation section (3) and the pre-embedded sleeve (2). The sealing assembly (4) includes an annular groove (40) disposed on the inner wall of the pre-embedded sleeve (2) and an annular clip (41) disposed on the outer wall of the pipe installation section (3). The annular clip (41) is tightly engaged with the annular groove (40) and connected to the annular groove (40) by a reinforcing member (42).

2. The waterproof sleeve joint node of claim 1, wherein: A water-stop ring (5) is provided on the outer wall of the pre-embedded sleeve (2), and the water-stop ring (5) is cast and connected to the main body of the building (1).

3. The waterproof sleeve connection node of claim 1, wherein: The main body of the annular groove (40) is annular, and the outer ring of the annular groove (40) is fixedly installed on the inner wall of the pre-embedded sleeve (2). Multiple installation grooves (400) are evenly spaced on the outer ring of the annular groove (40).

4. The waterproof sleeve connection node of claim 3, wherein: The mounting groove (400) is U-shaped, and a first connecting ring (401) is provided inside the mounting groove (400).

5. The waterproof sleeve connection node of claim 4, wherein: The main body of the ring clip (41) is ring-shaped. The inner ring of the ring clip (41) is fixedly installed on the outer wall of the pipe installation section (3). Multiple installation hooks (410) are evenly spaced on the outer ring of the ring clip (41).

6. The waterproof sleeve connection node of claim 5, wherein: The mounting hook (410) is inverted U-shaped, and an expansion strip (411) is fitted inside the mounting hook (410). A second connecting ring (412) is provided inside the mounting hook (410).

7. The waterproof sleeve connection node of claim 6, wherein: The first connecting ring (401) and the second connecting ring (412) are connected by the reinforcing member (42) which is traversed and bent. The reinforcing member (42) is made of galvanized iron wire.