Waterproof airtight structure of building through-wall pipe
By combining a sealing ring and a sealing plug, and utilizing designs such as a threaded rod and a rotating handle, the inconvenience of disassembling the through-wall pipe is solved, improving waterproofing, airtightness, and convenience. This structure is suitable for waterproofing and airtightening of through-wall pipes in building construction.
Patent Information
- Application Number
- CN202520430767.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-12
AI Technical Summary
The existing waterproof and airtight structure of the wall-penetrating pipes in buildings is inconvenient to dismantle, affecting the waterproof and thermal insulation performance of the building, and is difficult to replace or repair quickly.
The system employs a combination structure of a sealing ring, a first sealing plug, and a second sealing plug. The sealing plug can be easily disassembled and tightly connected through a moving mechanism and a positioning mechanism. The design includes a threaded rod, a rotating handle, a limiting ring, and a retaining plate, which improves sealing performance and ease of use.
It improves the waterproof and airtight effect of the through-wall pipe, facilitates the removal and installation of the sealing plug, and enhances the convenience and sealing performance.
Smart Images

Figure CN223794800U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wall-penetrating pipe sealing technology, and in particular to a waterproof and airtight structure for building wall-penetrating pipes. Background Technology
[0002] Wall sleeves, also known as wall penetration pipes, waterproof sleeves, or wall-embedded pipes, are often pre-embedded in walls during building construction. This creates holes in the wall after concrete is poured, facilitating subsequent pipe connections. However, gaps are created when these pipes pass through walls, which, if not addressed, can affect the building's waterproofing and insulation performance. Therefore, waterproof sealing of the wall sleeves is necessary. Currently used waterproof and airtight structures are inconvenient to disassemble after installation, making it difficult to quickly remove them for replacement or repair. Improvements are needed, hence this paper proposes a new waterproof and airtight structure for building wall penetration pipes. Utility Model Content
[0003] To address the inconvenience of disassembling waterproof and airtight structures after installation, this utility model provides a waterproof and airtight structure for building through-wall pipes.
[0004] This utility model provides a waterproof and airtight structure for a building through-wall pipe, employing the following technical solution:
[0005] A waterproof and airtight structure for a building through-wall pipe includes a through-wall pipe body and two sealing rings. The sealing rings are disposed on the outer surface of the through-wall pipe body. A first sealing plug is fixedly connected to the left side of the right sealing ring, and a second sealing plug is fixedly connected to the right side of the left sealing ring. A moving mechanism is provided in the inner cavity of the first sealing plug, and a positioning mechanism is provided on the right side of the second sealing plug.
[0006] The moving mechanism includes two threaded rods, which are rotatably connected to the top and bottom of the left side of the inner cavity of the first sealing plug via bearings. The right side of the threaded rod passes through the first sealing plug and is fixedly connected to a first rotating handle. The outer surface of the threaded rod is threadedly connected to a threaded sleeve. An L-shaped connecting rod is fixedly connected to one side of the threaded sleeve. A clamping plate is fixedly connected to the end of the L-shaped connecting rod away from the threaded sleeve.
[0007] The positioning mechanism includes two grooves, which are respectively opened at the top and bottom of the right side of the second sealing plug. The left side of the inner cavity of the groove is rotatably connected to a rotating shaft via a bearing. The left side of the rotating shaft passes through the sealing ring and is fixedly connected to a second rotating handle. The right side of the rotating shaft is fixedly connected to a limiting ring. The top and bottom of the right side of the limiting ring are fixedly connected to limiting frames. The outer surface of the clamping plate is engaged with the inner surface of the limiting frame.
[0008] By adopting the above technical solution, the card plate can be moved, which in turn can move the second sealing plug toward the first sealing plug, improving the tightness of the connection between the first and second sealing plugs and the wall, thereby improving the waterproof and airtight effect of the through-wall pipe. At the same time, this method also facilitates the disassembly of the first and second sealing plugs, making it convenient to use.
[0009] Optionally, a slider is fixedly connected to one side of the threaded sleeve, and a groove for cooperating with the slider is provided on one side of the inner cavity of the first sealing plug. The outer surface of the slider is slidably connected to the inner surface of the groove.
[0010] By adopting the above technical solution, the movement of the threaded sleeve can be guided and limited.
[0011] Optionally, a sealing gasket is fixedly connected to one side of the sealing ring, and the thickness of the sealing gasket is 5mm.
[0012] By adopting the above technical solution, the sealing performance between the sealing ring and the wall can be improved.
[0013] Optionally, a sealing ring is provided on the inner surface of the sealing ring, and the inner surface of the sealing ring is in close contact with the outer surface of the through-wall pipe.
[0014] By adopting the above technical solution, a seal can be achieved between the sealing ring and the through-wall pipe.
[0015] Optionally, through holes are provided at the top and bottom of the left side of the first sealing plug, and the outer surface of the L-shaped connecting rod is slidably connected to the inner surface of the through hole.
[0016] By adopting the above technical solution, the L-shaped connecting rod can be moved easily.
[0017] Optionally, the inner surface of the first sealing plug is slidably connected to the outer surface of the through-wall pipe, and the inner surface of the second sealing plug is slidably connected to the outer surface of the through-wall pipe.
[0018] By adopting the above technical solution, the first sealing plug and the second sealing plug can slide easily on the surface of the through-wall pipe.
[0019] Optionally, the limiting frame is arc-shaped.
[0020] In summary, this utility model has the following beneficial effects:
[0021] This invention, by setting a sealing ring, a first sealing plug, and a second sealing plug, can seal both sides of the through-wall pipe. By setting a clamping plate and a limiting frame, it is easy to connect and fix the first and second sealing plugs. By setting a first rotating handle, a threaded rod, a threaded sleeve, and an L-shaped connecting rod, the clamping plate can be moved, which in turn can move the second sealing plug toward the first sealing plug, improving the tightness of the connection between the first and second sealing plugs and the wall, thereby improving the waterproof and airtight effect of the through-wall pipe. At the same time, this method also facilitates the disassembly of the first and second sealing plugs, making it convenient to use. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a cross-sectional view of the structure of this utility model;
[0024] Figure 3 The structure of this utility model Figure 2 A magnified view of a section at point A in the middle;
[0025] Figure 4 This is an exploded view of the limiting frame and card plate structure of this utility model.
[0026] In the diagram: 1. Through-wall pipe; 2. Sealing ring; 3. First sealing plug; 4. Second sealing plug; 5. Moving mechanism; 501. Threaded rod; 502. First rotating handle; 503. Threaded sleeve; 504. L-shaped connecting rod; 505. Clamping plate; 6. Positioning mechanism; 601. Groove; 602. Rotating shaft; 603. Second rotating handle; 604. Limiting ring; 605. Limiting frame; 7. Slider; 8. Slide groove; 9. Sealing gasket; 10. Sealing ring. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Example:
[0029] Please refer to Figure 1-4A waterproof and airtight structure for a wall-penetrating pipe includes a wall-penetrating pipe body 1 and sealing rings 2. There are two sealing rings 2. The sealing rings 2 are disposed on the outer surface of the wall-penetrating pipe body 1. A first sealing plug 3 is fixedly connected to the left side of the right sealing ring 2, and a second sealing plug 4 is fixedly connected to the right side of the left sealing ring 2. A moving mechanism 5 is provided in the inner cavity of the first sealing plug 3, and a positioning mechanism 6 is provided on the right side of the second sealing plug 4.
[0030] The moving mechanism 5 includes two threaded rods 501, which are rotatably connected to the top and bottom of the left side of the inner cavity of the first sealing plug 3 via bearings. The right side of the threaded rod 501 passes through the first sealing plug 3 and is fixedly connected to the first rotating handle 502. The outer surface of the threaded rod 501 is threadedly connected to a threaded sleeve 503. An L-shaped connecting rod 504 is fixedly connected to one side of the threaded sleeve 503. A clamping plate 505 is fixedly connected to the end of the L-shaped connecting rod 504 away from the threaded sleeve 503.
[0031] The positioning mechanism 6 includes two grooves 601, which are respectively opened at the top and bottom of the right side of the second sealing plug 4. The left side of the inner cavity of the groove 601 is rotatably connected to the rotating shaft 602 via a bearing. The left side of the rotating shaft 602 passes through the sealing ring 2 and is fixedly connected to the second rotating handle 603. The right side of the rotating shaft 602 is fixedly connected to the limiting ring 604. The top and bottom of the right side of the limiting ring 604 are fixedly connected to the limiting frame 605. The outer surface of the clamping plate 505 is engaged with the inner surface of the limiting frame 605.
[0032] As a further technical optimization of this utility model, a slider 7 is fixedly connected to one side of the threaded sleeve 503, and a groove 8 for use with the slider 7 is opened on one side of the inner cavity of the first sealing plug 3. The outer surface of the slider 7 is slidably connected to the inner surface of the groove 8.
[0033] As a further technical optimization of this utility model, a sealing gasket 9 is fixedly connected to one side of the sealing ring 2, and the thickness of the sealing gasket 9 is 5mm.
[0034] As a further technical optimization of this utility model, a sealing ring 10 is provided on the inner surface of the sealing ring 2, and the inner surface of the sealing ring 10 is in close contact with the outer surface of the through-wall pipe 1.
[0035] As a further technical optimization of this utility model, the top and bottom of the left side of the first sealing plug 3 are provided with through holes, and the outer surface of the L-shaped connecting rod 504 is slidably connected to the inner surface of the through hole.
[0036] As a further technical optimization of this utility model, the inner surface of the first sealing plug 3 is slidably connected to the outer surface of the through-wall pipe 1, and the inner surface of the second sealing plug 4 is slidably connected to the outer surface of the through-wall pipe 1.
[0037] As a further technical optimization of this utility model, the limiting frame 605 is arc-shaped.
[0038] In this embodiment: by setting the sealing ring 2, the first sealing plug 3, and the second sealing plug 4, both sides of the through-wall pipe 1 can be sealed. By setting the clamping plate 505 and the limiting frame 605, the first sealing plug 3 and the second sealing plug 4 can be easily connected and fixed. By setting the first rotating handle 502, the threaded rod 501, the threaded sleeve 503, and the L-shaped connecting rod 504, the clamping plate 505 can be moved, which in turn can move the second sealing plug 4 toward the first sealing plug 3, improving the tightness of the connection between the first sealing plug 3 and the second sealing plug 4 and the wall, thereby improving the waterproof and airtight effect of the through-wall pipe 1. The design also facilitates the disassembly of the first sealing plug 3 and the second sealing plug 4, making it easy to use. By setting the second rotating handle 603, the rotating shaft 602, and the limiting ring 604, the limiting frame 605 can be rotated, allowing the limiting frame 605 to separate from the card plate 505, facilitating disassembly. By setting the slider 7 and the sliding groove 8, the movement of the threaded sleeve 503 can be guided and limited. By setting the sealing gasket 9, the sealing performance between the sealing ring 2 and the wall can be improved. By setting the sealing ring 10, the sealing performance between the sealing ring 2 and the through-wall pipe 1 can be improved. By setting the through hole, the L-shaped connecting rod 504 can be moved easily.
[0039] The implementation principle of this utility model is as follows: In use, the through-wall pipe 1 is inserted into the pre-reserved hole in the wall. The first sealing plug 3 and the second sealing plug 4 are respectively placed on both sides of the through-wall pipe 1 and then inserted into the hole, so that the clamping plate 505 contacts the limiting ring 604. Then, the second rotating handle 603 is rotated, which drives the rotating shaft 602 to rotate. The rotating shaft 602 drives the limiting ring 604 to rotate, and the limiting ring 604 drives the limiting frame 605 to rotate, so that the limiting frame 605 is engaged with the surface of the clamping plate 505. Then, the first rotating handle 502 is rotated, which drives the threaded rod. Rotating 501 causes the threaded rod 501 to move the threaded sleeve 503, which in turn moves the L-shaped connecting rod 504. The L-shaped connecting rod 504 then moves the clamping plate 505, which in turn moves the limiting frame 605. The limiting frame 605 then moves the second sealing plug 4, causing the second sealing plug 4 to move towards the first sealing plug 3. This improves the tightness of the connection between the first sealing plug 3, the second sealing plug 4, and the wall, thereby enhancing the waterproof and airtight effect on the through-wall pipe 1. This method also facilitates the disassembly of the first sealing plug 3 and the second sealing plug 4, making it convenient to use.
[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A waterproof and airtight structure for a wall-penetrating pipe in a building, comprising a wall-penetrating pipe body (1) and a sealing ring (2), characterized in that: There are two sealing rings (2). The sealing rings (2) are set on the outer surface of the through-wall pipe (1). A first sealing plug (3) is fixedly connected to the left side of the right sealing ring (2), and a second sealing plug (4) is fixedly connected to the right side of the left sealing ring (2). A moving mechanism (5) is provided in the inner cavity of the first sealing plug (3), and a positioning mechanism (6) is provided on the right side of the second sealing plug (4). The moving mechanism (5) includes two threaded rods (501), which are rotatably connected to the top and bottom of the left side of the inner cavity of the first sealing plug (3) via bearings. The right side of the threaded rod (501) passes through the first sealing plug (3) and is fixedly connected to a first rotating handle (502). The outer surface of the threaded rod (501) is threadedly connected to a threaded sleeve (503). One side of the threaded sleeve (503) is fixedly connected to an L-shaped connecting rod (504). The end of the L-shaped connecting rod (504) away from the threaded sleeve (503) is fixedly connected to a clamping plate (505). The positioning mechanism (6) includes two grooves (601), which are respectively opened at the top and bottom of the right side of the second sealing plug (4). The left side of the inner cavity of the groove (601) is rotatably connected to a rotating shaft (602) via a bearing. The left side of the rotating shaft (602) passes through the sealing ring (2) and is fixedly connected to a second rotating handle (603). The right side of the rotating shaft (602) is fixedly connected to a limiting ring (604). The top and bottom of the right side of the limiting ring (604) are both fixedly connected to a limiting frame (605). The outer surface of the clamping plate (505) is engaged with the inner surface of the limiting frame (605).
2. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: A slider (7) is fixedly connected to one side of the threaded sleeve (503), and a groove (8) for use with the slider (7) is provided on one side of the inner cavity of the first sealing plug (3). The outer surface of the slider (7) is slidably connected to the inner surface of the groove (8).
3. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: A sealing gasket (9) is fixedly connected to one side of the sealing ring (2), and the thickness of the sealing gasket (9) is 5mm.
4. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: The inner surface of the sealing ring (2) is provided with a sealing ring (10), and the inner surface of the sealing ring (10) is in close contact with the outer surface of the through-wall pipe (1).
5. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: The first sealing plug (3) has through holes at the top and bottom on the left side, and the outer surface of the L-shaped connecting rod (504) is slidably connected to the inner surface of the through hole.
6. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: The inner surface of the first sealing plug (3) is slidably connected to the outer surface of the through-wall pipe (1), and the inner surface of the second sealing plug (4) is slidably connected to the outer surface of the through-wall pipe (1).
7. The waterproof and airtight structure for a building through-wall pipe according to claim 1, characterized in that: The limiting frame (605) is arc-shaped.