Waterproof sealing structure of through-wall pipe fitting

Abstract

The utility model belongs to the technical field of building through-wall pipe fittings, and particularly relates to a waterproof sealing structure of a through-wall pipe fitting, which comprises a through-wall pipe arranged in a preformed hole of a wall body in a penetrating manner, the outer diameter of the through-wall pipe is smaller than that of the preformed hole, a plurality of layers of elastic sealing rings are arranged on the outer wall of the through-wall pipe along the axis at equal intervals, and the diameter of the elastic sealing rings is larger than that of the preformed hole. A fixing check ring is arranged at one end of the through-wall pipe, a threaded end is arranged at the other end of the through-wall pipe, a fastening check ring is arranged at the threaded end in a threaded connection mode, and foaming filling areas are arranged between the fastening check ring and the elastic sealing rings, between the elastic sealing rings and between the elastic sealing rings and the fixing check ring. The outer wall of the through-wall pipe is provided with an injection pipeline connected with the foaming filling areas, and polystyrene foam for sealing the reserved holes and gaps of the through-wall pipe is injected into each foaming filling area through the injection pipeline. Through the combination of the multiple layers of elastic sealing rings and the foaming filling area, efficient sealing between the preformed hole and the through-wall pipe fitting is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building wall-piercing pipe fittings, and particularly relates to a waterproof and sealing structure for wall-piercing pipe fittings. Background Art

[0002] In modern building design and construction, with the improvement of living quality and the diversified needs of living environment, more and more complex pipeline systems are integrated inside buildings, such as the exhaust pipes of gas water heaters, fresh air system pipes, air-conditioning refrigerant pipes, etc. These wall-piercing pipe fittings become important channels connecting indoors and outdoors. However, due to construction conditions, the hole walls of the wall-piercing holes reserved in the wall are often rough, especially the edges of the entrances and exits. Tiny gaps that are difficult to detect are easily formed after directly installing the pipe fittings. These gaps not only affect the overall sealing of the building but also become potential channels for wind, rain, insects, and ants to invade, seriously threatening the comfort and safety of the indoor environment.

[0003] Especially in humid or windy and rainy areas, the reserved holes without effective sealing are prone to rainwater penetration, causing problems such as wall seepage and mildew, and may even damage indoor decoration and electrical equipment. At the same time, small organisms such as insects and ants may also enter the room through these gaps, bringing hygiene hazards and health risks. Therefore, the waterproof and sealing treatment between the wall-piercing pipe fittings and the reserved holes is particularly important.

[0004] Although there are already various sealing materials and methods on the market, they often have problems such as complex operation, non-durable sealing effect, or high cost, and it is difficult to meet the needs of the construction industry for efficient, economical, and reliable sealing solutions. In view of this, there is a certain market demand for developing a waterproof and sealing structure for wall-piercing pipe fittings with a simple structure, easy installation, excellent sealing effect, and reasonable cost. Summary of the Invention

[0005] Aiming at the deficiencies of the above-mentioned prior art, the utility model provides a waterproof and sealing structure for wall-piercing pipe fittings to solve the above problems.

[0006] A waterproof sealing structure for a wall-piercing pipe fitting of the present utility model includes a wall-piercing pipe passing through a reserved hole in a wall. The outer diameter of the wall-piercing pipe is smaller than the reserved hole. A plurality of layers of elastic sealing rings are arranged at equal intervals along the axis on the outer wall of the wall-piercing pipe. The diameter of the elastic sealing ring is larger than the reserved hole. One end of the wall-piercing pipe is provided with a fixed retaining ring, and the other end is a threaded end. A fastening retaining ring is screwed on the threaded end. Foaming filling areas are arranged between the fastening retaining ring and the elastic sealing ring, between the elastic sealing rings, and between the elastic sealing ring and the fixed retaining ring. A foaming outlet is opened on the outer wall of the wall-piercing pipe in each foaming filling area. A foaming inlet corresponding to the foaming outlet one by one is rotatably arranged on the end wall of the threaded end around the axis. An injection pipeline is connected between the foaming inlet and the corresponding foaming outlet. Foaming glue for sealing the gap between the reserved hole and the wall-piercing pipe is injected into each foaming filling area through the injection pipeline.

[0007] Further, a rotating ring is rotatably connected to the inner side of the fastening retaining ring.

[0008] Further, an elastic pressing ring is arranged on the inner side of the rotating ring.

[0009] Further, the elastic sealing ring is a rubber ring. A skeleton ring corresponding to the rubber ring one by one is arranged on the outer wall of the wall-piercing pipe, and the rubber ring covers the outer layer of the skeleton ring.

[0010] Further, the inner ring thickness of the elastic sealing ring gradually becomes thinner towards the outer ring.

[0011] Further, anti-slip lines corresponding to each foaming filling area one by one are arranged on the outer wall of the wall-piercing pipe.

[0012] Further, a number of force-applying blind holes are arranged on the fastening retaining ring.

[0013] Compared with the prior art, the waterproof sealing structure of the wall-piercing pipe fitting realizes efficient sealing between the reserved hole and the wall-piercing pipe fitting through the combination of multiple layers of elastic sealing rings and foaming filling areas, effectively solves the problems of air leakage, water ingress and insect and ant invasion, improves the overall safety and comfort of the building, simplifies the installation process and reduces the maintenance cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is for Figure 1 an axonometric view of the present utility model after turning the direction;

[0016] Figure 3 is a schematic cross-sectional view after the present utility model is installed;

[0017] Figure 4 It is a cross-sectional view of an elastic sealing ring and a skeleton ring.

[0018] In the figure: 1, wall; 2, reserved hole; 3, through-wall pipe; 4, elastic sealing ring; 5, fixed retaining ring; 6, fastening retaining ring; 7, foaming outlet; 8, foaming inlet; 9, injection pipe; 10, foaming adhesive; 11, swivel ring; 12, elastic pressing ring; 13, skeleton ring; 14, force-applying blind hole. Specific embodiments

[0019] To better understand the present invention, the following will combine Figures 1 to 4 to explain in detail the embodiments of the present invention.

[0020] It should be noted that the directions of "front, back, left, right, up, and down" described in the text are all based on Figure 1 the "front, back, left, right, up, and down" directions in

[0021] Refer to Figures 1 to 4 , a waterproof sealing structure for a through-wall pipe fitting of the present invention includes a through-wall pipe 3 inserted into a reserved hole 2 in a wall 1. The outer diameter of the through-wall pipe 3 is designed to be slightly smaller than the reserved hole 2 in the wall 1, so as to facilitate installation and leave enough space for sealing treatment. On the outer wall of the through-wall pipe 3, multiple layers of elastic sealing rings 4 are arranged at equal intervals along its axis. The diameters of these elastic sealing rings 4 are larger than the reserved hole 2, so as to ensure that the through-wall pipe 3 can closely fit the hole wall of the reserved hole 2 after installation, forming a preliminary seal.

[0022] In specific implementation, the elastic sealing ring 4 is preferably made of rubber material because it has good elasticity and sealing performance. To further enhance the support and stability of the rubber ring, skeleton rings 13 corresponding to the rubber rings one by one can be arranged on the outer wall of the through-wall pipe 3, and the rubber ring covers the outer layer of the skeleton ring 13, so that both the elasticity of the sealing ring can be maintained and it can be prevented from deforming or falling off during long-term use.

[0023] In addition, to optimize the sealing effect, the inner ring thickness of the elastic sealing ring 4 can be designed to gradually thin from the inner ring to the outer ring. This design enables the sealing ring to more evenly fit the hole wall when being extruded by an external force, reducing the generation of gaps.

[0024] A fixed retaining ring 5 is provided at one end of the through-wall pipe 3, which is used to initially fix the position of the through-wall pipe 3 and serve as part of the sealing structure. The other end is designed as a threaded end for easy screwing connection with the fastening retaining ring 6. Foaming filling areas are provided between the fastening retaining ring 6 and the elastic sealing ring 4, between the elastic sealing rings 4, and between the elastic sealing ring 4 and the fixed retaining ring 5. A foaming outlet 7 is provided on the outer wall of the through-wall pipe 3 in each foaming filling area. The end wall of the threaded end is rotatably provided with a foaming inlet 8 corresponding to the foaming outlet 7 one by one. An injection pipe 9 is provided between each foaming inlet 8 and the corresponding foaming outlet 7. Foaming glue 10 for sealing the gap between the reserved hole 2 and the through-wall pipe 3 is injected into each foaming filling area through the injection pipe 9.

[0025] During the assembly process, first insert the threaded end of the through-wall pipe 3 into the reserved hole 2 from the wall 1 until the fastening retaining ring 6 fits against the wall of the wall 1, and at the same time ensure that each layer of elastic sealing ring 4 is correctly installed and initially seals the hole wall. Then, connect the fastening retaining ring 6 by screwing, and use a special foaming glue 10 injection gun to inject sufficient foaming glue 10 into each foaming filling area through the foaming inlet 8. After the foaming glue 10 is injected, it will quickly expand and fill all the gaps between the reserved hole 2 and the through-wall pipe 3, forming a firm and lasting sealing layer.

[0026] To enhance the fastening effect of the fastening retaining ring 6 and the convenience of operation, a rotating ring 11 with a rotating connection can be provided on its inner side, and an elastic pressure ring 12 can be further provided on the inner side of the rotating ring 11 to provide better sealing pressure and adaptability. In addition, anti-slip threads can be provided on the outer wall of the through-wall pipe 3 to facilitate the firm fitting of the outer wall after the foaming glue 10 is injected. A number of force-applying blind holes 14 can be provided on the fastening retaining ring 6 to facilitate the insertion of tools for fastening operations.

[0027] The usage method and principle of the present utility model:

[0028] When the waterproof sealing structure of the through-wall pipe 3 of the present invention is in use, first insert the threaded end of the through-wall pipe 3 into the reserved hole 2 from the wall 1 until the fastening retaining ring 6 fits against the wall of the wall 1, and at the same time ensure that each layer of elastic sealing ring 4 is correctly installed and initially seals the hole wall. Then, screw the fastening retaining ring 6 with the threaded end of the through-wall pipe 3 until the fastening retaining ring 6 cannot be rotated anymore and the elastic pressure ring 12 abuts against the wall 1 and is compressed. Finally, inject foaming glue 10 into each foaming inlet 8 in sequence through a foaming injection gun until sufficient foaming glue 10 is injected into each foaming filling area. After the foaming glue 10 is completely expanded and cured, the sealing treatment can be completed. At this time, a firm and lasting waterproof sealing barrier will be formed between the through-wall pipe 3 and the reserved hole 2, effectively preventing the intrusion of external factors such as wind, rain, insects and ants.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified and defined, it should be noted that the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a mechanical connection or an electrical connection, or it may be the communication inside two elements. It may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A waterproof sealing structure for a wall-piercing pipe fitting, comprising a wall-piercing pipe (3) inserted into a reserved hole (2) of a wall (1), characterized in that: The outer diameter of the through-wall pipe (3) is smaller than the reserved hole (2). A plurality of layers of elastic sealing rings (4) are arranged on the outer wall of the through-wall pipe (3) at equal intervals along the axis. The diameter of the elastic sealing ring (4) is larger than the reserved hole (2). One end of the through-wall pipe (3) is provided with a fixed retaining ring (5), and the other end is provided as a threaded end. A fastening retaining ring (6) is screwed on the threaded end. A foaming filling area is arranged between the fastening retaining ring (6) and the elastic sealing ring (4), between the elastic sealing rings (4), and between the elastic sealing ring (4) and the fixed retaining ring (5). A foaming outlet (7) is opened on the outer wall of the through-wall pipe (3) in each foaming filling area. A foaming inlet (8) corresponding to the foaming outlet (7) one by one is rotatably arranged on the end wall of the threaded end around the axis. An injection pipe (9) is arranged to connect between the foaming inlet (8) and the corresponding foaming outlet (7). Foaming glue (10) for sealing the gap between the reserved hole (2) and the through-wall pipe (3) is injected into each foaming filling area through the injection pipe (9).

2. The waterproof and sealing structure of a wall-piercing pipe fitting as described in claim 1, characterized in that: A rotating ring (11) is rotatably connected to the inner side of the fastening retaining ring (6).

3. The waterproof sealing structure of a wall-piercing pipe fitting as described in claim 2, characterized in that: An elastic pressing ring (12) is arranged on the inner side of the rotating ring (11).

4. The waterproof and sealing structure of a wall-piercing pipe fitting as described in claim 1, wherein: The elastic sealing ring (4) is a rubber ring. A skeleton ring (13) corresponding to the rubber ring one by one is arranged on the outer wall of the through-wall pipe (3). The rubber ring covers the outer layer of the skeleton ring (13).

5. The waterproof sealing structure of a wall-piercing pipe fitting as described in claim 1, characterized in that: The thickness of the inner ring of the elastic sealing ring (4) gradually becomes thinner from the inner ring to the outer ring.

6. The waterproof and sealing structure of a wall-piercing pipe fitting as described in claim 1, characterized in that: Anti-slip lines corresponding to each foaming filling area are arranged on the outer wall of the through-wall pipe (3).

7. The waterproof and sealing structure of a wall-piercing pipe fitting as described in claim 1, characterized in that: A plurality of force-applying blind holes (14) are arranged on the fastening retaining ring (6).

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