Building pipe hole reservation structure

Abstract

The utility model relates to building pipeline installation technical field, concretely is a kind of building pipeline reserved hole structure, including pre -buried sleeve, the outside pouring of pre -buried sleeve is formed with wall body structure, the outside middle part of pre -buried sleeve is provided with water stop ring, the outer tube wall of pre -buried sleeve is uniformly provided with multiple occlusal along, occlusal along and the wall body structure formed after pouring are mechanically occluded, the inside of pre -buried sleeve is provided with building pipeline, the inside of pre -buried sleeve is provided with limit along, the outside of building pipeline is provided with lap along, lap along is limited and clamped on limit along, building pipeline and pre -buried sleeve between filling are provided with fireproof expansion sealant, the both ends of building pipeline and pre -buried sleeve are provided with first sealing structure, the both ends of pre -buried sleeve and wall body structure between form second sealing structure, the utility model can improve the installation stability and sealing property of building pipeline reserved hole structure, improve waterproof sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of building pipeline installation technology, specifically a structure for pre-reserved holes in building pipelines. Background Technology

[0002] In construction engineering, the construction quality of pre-reserved pipe openings directly affects the overall waterproofing, structural stability, and subsequent maintenance costs of the building. Traditional methods for pre-reserving pipe openings often involve embedding simple sleeves followed by pouring concrete, which presents the following problems: 1. Insufficient sealing: The sleeve and the concrete rely on simple contact, which can easily create gaps due to material shrinkage or vibration, leading to water vapor penetration and leakage problems; 2. Insecure fixation: The sleeve lacks an effective pull-out resistance design and is mainly fixed by bonding and adsorption through the pouring of concrete. During use, it is prone to displacement due to factors such as water flow vibration, which affects the installation stability and sealing performance of the building pipeline. 3. Poor dynamic adaptability: When pipelines expand and contract due to heat or buildings settle, traditional rigid sealing structures are prone to cracking and failure.

[0003] While existing technologies offer improvements using water-stop rings or sealants, they still suffer from insufficient synergy in multi-layered sealing and limited end-sealing structures. Therefore, there is an urgent need for a multi-layered pre-drilled hole structure integrating mechanical interlocking and dynamic sealing to comprehensively enhance waterproofing, stability, and safety. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for pre-reserved holes for building pipes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pre-reserved hole structure for building pipes, including a pre-embedded sleeve, a wall structure formed by casting on the outer side of the pre-embedded sleeve, a water-stop ring provided in the middle of the outer side of the pre-embedded sleeve, multiple interlocking edges evenly provided on the outer wall of the pre-embedded sleeve, the interlocking edges mechanically interlocking with the wall structure formed after casting, a building pipe provided inside the pre-embedded sleeve, a limiting edge provided inside the pre-embedded sleeve, an overlapping edge provided on the outer side of the building pipe, the overlapping edge being limited and engaged on the limiting edge, fire-resistant expanding sealant filling the space between the building pipe and the pre-embedded sleeve, a first sealing structure provided at both ends of the building pipe and the pre-embedded sleeve, and a second sealing structure formed between both ends of the pre-embedded sleeve and the wall structure.

[0006] The present invention is further configured such that the first sealing structure includes a sealing collar, the top of the sealing collar having a first sealing groove facing downwards, and a sealing cap being provided in the first sealing groove. After the building pipe is installed and stabilized inside the pre-embedded sleeve, the sealing collar is engaged with the end of the connection gap between the building pipe and the pre-embedded sleeve, such that the top sealing collar is located outside the top of the fireproof expansion sealant, and the bottom sealing collar is located outside the limiting edge. Here, preferably, the outer end of the sealing collar is flush with the end of the pre-embedded sleeve. Then, the sealing cap is pressed tightly on the top of the sealing collar.

[0007] The present invention is further configured such that the sealing cap includes a top pressing edge, the top pressing edge is sealed and fitted to the end of the pre-embedded sleeve, and a sealing extrusion section is provided on the inner side of the top pressing edge. The sealing extrusion section is pressed into the first sealing groove. When the sealing cap is pressed onto the sealing ring, the top pressing edge is sealed and fitted to the outer end of the pre-embedded sleeve, and at the same time, the sealing extrusion section is inserted into the first sealing groove.

[0008] The present invention is further configured such that a first sealing ring is provided on both inner sidewalls of the first sealing groove, and a second sealing ring is provided on both the inner and outer sides of the sealing extrusion section. The first and second sealing rings can engage with each other. During the above process, after the sealing extrusion section is inserted into the first sealing groove, the first and second sealing rings will squeeze and engage with each other, thereby making the inner wall of the sealing collar fit more closely with the outer wall of the building pipe. At the same time, the outer wall of the sealing collar fits more closely with the inner wall of the pre-embedded sleeve, thereby strengthening the end connection sealing between the building pipe and the pre-embedded sleeve.

[0009] The present invention is further provided that the top of the wall structure is provided with a waterproof layer, and the top of the waterproof layer is provided with a surface decorative layer.

[0010] The present invention is further configured such that the second sealing structure includes a second sealing groove, the second sealing groove extends downward from the surface decorative layer to the wall structure, the opening of the second sealing groove gradually decreases in a stepped manner from bottom to top, and a second sealing component is provided in the second sealing groove.

[0011] The present invention is further configured such that the second sealing component includes a rigid sealing material, a flexible sealing ring, and an elastic sealant. The rigid sealing material, the flexible sealing ring, and the elastic sealant are distributed sequentially along the outer, middle, and inner layers of the second sealing groove, respectively. The rigid sealing material can be micro-expansion concrete, which fills the outer layer of the stepped holes in the second sealing groove. After hardening, it exhibits micro-expansion characteristics, tightly interlocking with the wall structure to form a high-strength rigid barrier, effectively fixing the position of the pre-embedded sleeve and blocking the water seepage path. The flexible sealing ring is used for buffer adaptation in the middle layer. It is made of nitrile rubber or water-swellable rubber into annular gaskets and installed on the stepped surface in the middle of the holes in the second sealing groove. It can generate elastic deformation with the thermal expansion and contraction of the pipe, compensating for displacement and continuously maintaining the interface sealing pressure. The elastic sealant is used for fine filling in the inner layer. It is a paste-like elastic material injected into the gap between the pre-embedded sleeve and the inner layer holes of the second sealing groove. After curing, it forms a flexible adhesive layer that can fill tiny gaps and follow the slight displacement of the pipe to achieve dynamic sealing and further improve waterproof reliability.

[0012] The present invention is further configured such that the interlocking edge includes a connecting section, the inner end of the connecting section is connected to the outer wall of the pre-embedded sleeve, and an interlocking section is provided on the outer side of the connecting section. The size of the interlocking section is larger than the size of the connecting section. Here, by setting the connecting section and the interlocking section, when the wall structure is cast and fixed, the concrete can form a mutually interlocking limiting structure with the interlocking edge after it has set. This can improve the stability of the pre-embedded sleeve after it has been pre-embedded and fixed, and at the same time, it can further enhance the sealing and waterproofing effect between the pre-embedded sleeve and the wall structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. Enhances structural stability and waterproof performance This invention significantly improves the structural stability and waterproofing effect of pre-reserved pipe holes by setting a water-stop ring and an interlocking edge on the outside of the pre-embedded sleeve. The water-stop ring increases the contact area with the concrete, effectively blocking the water seepage path; the interlocking edge, through the special design of the connecting section and the interlocking section, forms a tight interlock with the poured wall, preventing displacement or loosening of the pre-embedded sleeve. This dual fixing mechanism not only improves the pull-out resistance of the pre-embedded sleeve in the wall structure, but also further optimizes the sealing performance through the uniform distribution of the interlocking edge, ensuring no risk of leakage during long-term use.

[0014] 2. This utility model achieves precise positioning of building pipes through the cooperation of the limiting edge and the overlapping edge, combined with the filling of fire-resistant expanding sealant, forming a dual sealing system of "mechanical + chemical". The fire-resistant expanding sealant expands and carbonizes at high temperatures, blocking the spread of fire, while maintaining elasticity at room temperature to adapt to the thermal expansion and contraction of the pipes. The first sealing structure at both ends achieves efficient sealing at the ends through the nesting and compression of sealing rings, sealing caps, and multi-level sealing rings. This design takes into account both fire safety and dynamic sealing requirements, solving the sealing failure problem caused by material aging or displacement in traditional structures.

[0015] 3. Stepped composite waterproof barrier This invention incorporates a second sealing structure between the embedded sleeve and the wall structure. This second sealing structure employs a stepped second sealing groove and a layered filling strategy of rigid-flexible-elastic materials. An outer layer of micro-expansion concrete provides rigid support, a middle layer of flexible sealing ring compensates for displacement, and an inner layer of elastic sealant fills microscopic gaps, forming a gradient waterproof barrier. This design adapts to complex conditions such as building settlement and pipe vibration, and particularly addresses the pain point of easy leakage at the edges of openings. Simultaneously, the overlapping of the waterproof and decorative layers further strengthens the overall waterproof system, significantly extending the structural lifespan and reducing subsequent maintenance costs. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the overall structure of a pre-reserved hole structure for building pipes in this utility model; Figure 2 This is an exploded cross-sectional view of the overall structure of the present invention. Figure 1 ; Figure 3 This is an exploded cross-sectional view of the overall structure of the present invention. Figure 2 ; Figure 4 This is an exploded view of the connection structure of the embedded sleeve, building pipe and the first sealing structure in this utility model; Figure 5 This is an exploded cross-sectional view of the partial connection structure between the pre-embedded sleeve, building pipe, sealing ring, and sealing cap in this utility model.

[0017] The components represented by each number in the attached diagram are listed below: 1. Embedded sleeve; 2. Water-stop ring; 3. Interlocking edge; 4. Building pipe; 5. Limiting edge; 6. Overlap edge; 7. Fire-resistant expanding sealant; 8. Sealing ring; 9. First sealing groove; 10. Sealing cap; 11. Top pressing edge; 12. Sealing compression section; 13. First sealing ring; 14. Second sealing ring; 15. Waterproof layer; 16. Surface decorative layer; 17. Second sealing groove; 18. Rigid sealing material; 19. Flexible sealing ring; 20. Elastic sealant; 21. Connecting section; 22. Interlocking section; 100. Wall structure. Detailed Implementation

[0018] 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.

[0019] This utility model provides a technical solution: Please refer to Figures 1-5 A pre-reserved hole structure for building pipes includes a pre-embedded sleeve 1. A wall structure 100 is formed by casting on the outer side of the pre-embedded sleeve 1. A water-stop ring 2 is provided in the middle of the outer side of the pre-embedded sleeve 1. Multiple interlocking edges 3 are evenly provided on the outer wall of the pre-embedded sleeve 1. The interlocking edges 3 are mechanically interlocked with the wall structure 100 formed after casting. A building pipe 4 is provided inside the pre-embedded sleeve 1. A limiting edge 5 is provided inside the pre-embedded sleeve 1. An overlapping edge 6 is provided on the outer side of the building pipe 4. The overlapping edge 6 is limited and engaged on the limiting edge 5. Fire-resistant expanding sealant 7 is filled between the building pipe 4 and the pre-embedded sleeve 1. The fire-resistant expanding sealant 7 is preferably flame-retardant polyurethane foam. A first sealing structure is provided at both ends of the building pipe 4 and the pre-embedded sleeve 1. A second sealing structure is formed between both ends of the pre-embedded sleeve 1 and the wall structure 100.

[0020] Please see Figures 1-5 As one embodiment of the first sealing structure: the first sealing structure includes a sealing collar 8, a first sealing groove 9 is provided on the top of the sealing collar 8 facing downward, and a sealing cap 10 is provided in the first sealing groove 9. After the building pipe 4 is installed and stabilized inside the pre-embedded sleeve 1, the sealing ring 8 is snapped into the end of the connection gap between the building pipe 4 and the pre-embedded sleeve 1, so that the top sealing ring 8 is located outside the fireproof expansion sealant 7 and the bottom sealing ring 8 is located outside the limiting edge 5. Here, it is preferable that the outer end of the sealing ring 8 is flush with the end of the pre-embedded sleeve 1. Then, the sealing cap 10 is pressed tightly on the top of the sealing ring 8.

[0021] Please see Figures 1-5 As one embodiment of the sealing cap 10: the sealing cap 10 includes a top pressing edge 11, which is sealed and fitted to the end of the pre-embedded sleeve 1. A sealing extrusion section 12 is provided on the inner side of the top pressing edge 11, and the sealing extrusion section 12 is pressed into the first sealing groove 9. When the sealing cap 10 is pressed onto the sealing ring 8, the top pressing edge 11 is sealed and adhered to the outer end of the pre-embedded sleeve 1, and at the same time, the sealing extrusion section 12 is inserted into the first sealing groove 9.

[0022] Furthermore, a first sealing ring 13 is provided on both inner sidewalls of the first sealing groove 9, and a second sealing ring 14 is provided on both the inner and outer sides of the sealing extrusion section 12. The first sealing ring 13 and the second sealing ring 14 can mesh with each other. During the above process, after the sealing compression section 12 is inserted into the first sealing groove 9, the first sealing ring 13 and the second sealing ring 14 will squeeze and mesh with each other, so that the inner wall of the sealing sleeve 8 can fit more closely with the outer wall of the building pipe 4. At the same time, the outer wall of the sealing sleeve 8 can fit more closely with the inner wall of the pre-embedded sleeve 1, thereby strengthening the end connection sealing between the building pipe 4 and the pre-embedded sleeve 1.

[0023] Please see Figures 1-5 As one embodiment of the wall structure 100: a waterproof layer 15 is provided at the top of the wall structure 100, and a surface decorative layer 16 is provided at the top of the waterproof layer 15.

[0024] Please see Figures 1-5 As one embodiment of the second sealing structure: the second sealing structure includes a second sealing groove 17, which extends downward from the surface decorative layer 16 to the wall structure 100. The opening of the second sealing groove 17 gradually decreases in a stepped manner from bottom to top, and a second sealing component is provided in the second sealing groove 17.

[0025] Please see Figures 1-5 As one embodiment of the second sealing assembly: the second sealing assembly includes a rigid sealing material 18, a flexible sealing ring 19, and an elastic sealant 20, which are distributed sequentially along the outer, middle, and inner layers of the second sealing groove 17, respectively. Among them, the rigid sealing material 18 can be micro-expansion concrete, which fills the outer layer of the stepped second sealing groove 17 hole. After hardening, it produces micro-expansion characteristics, tightly interlocks with the wall structure, forms a high-strength rigid barrier, effectively fixes the pipe position of the pre-embedded sleeve 1 and blocks the water seepage path. The flexible sealing ring 19 is used for the middle layer buffer adaptation. It is made of nitrile rubber or water-swellable rubber into annular gaskets and is installed on the stepped surface in the middle of the hole of the second sealing groove 17. It can generate elastic deformation with the thermal expansion and contraction of the pipeline to compensate for the displacement and continuously maintain the interface sealing pressure. Elastic sealant 20 is used for fine filling of the inner layer. It is a paste-like elastic material injected into the gap between the inner layer holes of the pre-embedded sleeve 1 and the second sealing groove 17. After curing, it forms a flexible adhesive layer that can fill tiny gaps and follow the slight displacement of the pipe to achieve dynamic sealing and further improve waterproof reliability.

[0026] Please see Figures 1-5As one embodiment of the biting edge 3: the biting edge 3 includes a connecting section 21, the inner end of the connecting section 21 is connected to the outer wall of the pre-embedded sleeve 1, and a biting section 22 is provided on the outer side of the connecting section 21, the size of the biting section 22 is larger than the size of the connecting section 21. Here, by setting the connecting section 21 and the interlocking section 22, when the wall structure 100 is poured and fixed, the concrete can form a mutually interlocking limiting structure with the interlocking edge 3 after it has set. This can improve the stability of the embedded sleeve 1 after it is embedded and fixed, and at the same time, it can further enhance the sealing and waterproofing effect between the embedded sleeve 1 and the wall structure 100.

[0027] In summary, the working principle and specific workflow of this utility model are as follows: This utility model provides a water-stop ring 2 on the outside of the pre-embedded sleeve 1. The water-stop ring 2 can increase the interlocking area with the concrete and prevent water penetration. Meanwhile, the present invention provides an interlocking edge 3 on the outside of the pre-embedded sleeve 1. By setting the connecting section 21 and the interlocking section 22, when the wall structure 100 is poured and fixed, the concrete can form a mutually interlocking limiting structure with the interlocking edge 3 after it has set. This can improve the stability of the pre-embedded sleeve 1 after it is pre-embedded and fixed, and at the same time, it can further enhance the sealing and waterproofing effect between the pre-embedded sleeve 1 and the wall structure 100. Meanwhile, this utility model provides a mutually cooperating limiting edge 5 and overlapping edge 6 between the building pipe 4 and the pre-embedded sleeve 1. In this way, during installation, the building pipe 4 is installed into the pre-embedded sleeve 1 from top to bottom. The overlapping edge 6 and the limiting edge 5 cooperate to limit the installation of the building pipe 4. This can improve the installation stability of the building pipe 4 in the pre-embedded sleeve 1 after fixing, reduce the stress on the intermediate connecting materials, and avoid the situation where the intermediate connecting materials are displaced due to the weight of the building pipe 4 itself, which would lead to changes in the sealing effect. This utility model fills the space between the building pipe 4 and the pre-embedded sleeve 1 with fire-resistant expansion sealant 7. The fire-resistant expansion sealant 7 expands when exposed to fire to form a dense carbonized layer, which blocks the spread of flames and smoke. It maintains elasticity at room temperature, adapts to pipe displacement, and has the triple effects of fireproof, waterproof and sealing. Meanwhile, the present invention provides a first sealing structure at both ends of the building pipe 4 and the pre-embedded sleeve 1. Here, after the building pipe 4 is installed and stabilized inside the pre-embedded sleeve 1, the sealing ring 8 is engaged with the end of the connection gap between the building pipe 4 and the pre-embedded sleeve 1, so that the top sealing ring 8 is located outside the fireproof expansion sealant 7 and the bottom sealing ring 8 is located outside the limiting edge 5. Here, preferably, the outer end of the sealing collar 8 is flush with the end of the pre-embedded sleeve 1. Then, the sealing cap 10 is pressed on the top of the sealing collar 8. When the sealing cap 10 is pressed onto the sealing collar 8, the top pressing edge 11 is sealed and adhered to the outer end of the pre-embedded sleeve 1. At the same time, the sealing extrusion section 12 is inserted into the first sealing groove 9. During the above process, after the sealing extrusion section 12 is inserted into the first sealing groove 9, the first sealing ring 13 and the second sealing ring 14 will squeeze and mesh with each other, so that the inner wall of the sealing sleeve 8 can fit more closely with the outer wall of the building pipe 4. At the same time, the outer wall of the sealing sleeve 8 can fit more closely with the inner wall of the pre-embedded sleeve 1, thereby strengthening the end connection sealing between the building pipe 4 and the pre-embedded sleeve 1. Meanwhile, the present invention provides a second sealing structure between the pre-embedded sleeve 1 and the wall structure 100. The second sealing structure includes a second sealing groove 17 and a rigid sealing material 18, a flexible sealing ring 19 and an elastic sealant 20 located in the second sealing groove 17. The rigid sealing material 18, the flexible sealing ring 19 and the elastic sealant 20 are distributed sequentially along the outer layer, middle layer and inner layer of the second sealing groove 17, respectively. Among them, the rigid sealing material 18 can be micro-expansion concrete, which fills the outer layer of the stepped second sealing groove 17 hole. After hardening, it produces micro-expansion characteristics, tightly interlocks with the wall structure, forms a high-strength rigid barrier, effectively fixes the pipe position of the pre-embedded sleeve 1 and blocks the water seepage path. The flexible sealing ring 19 is used for the middle layer buffer adaptation. It is made of nitrile rubber or water-swellable rubber into a ring gasket and is installed on the stepped surface in the middle of the second sealing groove 17 hole. It can generate elastic deformation with the thermal expansion and contraction of the pipeline to compensate for the displacement and continuously maintain the interface sealing pressure. Elastic sealant 20 is used for fine filling of the inner layer. It is a paste-like elastic material injected into the gap between the pre-embedded sleeve 1 and the inner hole of the second sealing groove 17. After curing, it forms a flexible adhesive layer that can fill tiny gaps and follow the slight displacement of the pipe to achieve dynamic sealing and further improve waterproof reliability.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for pre-reserved holes for building pipes, comprising a pre-embedded sleeve (1), characterized in that: A wall structure (100) is formed by casting on the outer side of the pre-embedded sleeve (1). A water-stop ring (2) is provided in the middle of the outer side of the pre-embedded sleeve (1). Multiple interlocking edges (3) are evenly provided on the outer wall of the pre-embedded sleeve (1). The interlocking edges (3) are mechanically interlocked with the wall structure (100) formed after casting. A building pipe (4) is provided inside the pre-embedded sleeve (1). A limiting edge (5) is provided inside the pre-embedded sleeve (1). An overlapping edge (6) is provided on the outer side of the building pipe (4). The overlapping edge (6) is limited and engaged on the limiting edge (5). Fireproof expansion sealant (7) is filled between the building pipe (4) and the pre-embedded sleeve (1). A first sealing structure is provided at both ends of the building pipe (4) and the pre-embedded sleeve (1). A second sealing structure is formed between the two ends of the pre-embedded sleeve (1) and the wall structure (100).

2. The pre-reserved hole structure for building pipes according to claim 1, characterized in that: The first sealing structure includes a sealing collar (8), and a first sealing groove (9) is provided on the top of the sealing collar (8) facing downward, and a sealing cap (10) is provided in the first sealing groove (9).

3. The pre-reserved hole structure for building pipes according to claim 2, characterized in that: The sealing cap (10) includes a top pressing edge (11), which is sealed and fitted to the end of the pre-embedded sleeve (1). A sealing extrusion section (12) is provided on the inner side of the top pressing edge (11), and the sealing extrusion section (12) is pressed into the first sealing groove (9).

4. The pre-reserved hole structure for building pipes according to claim 3, characterized in that: The first sealing groove (9) is provided with a first sealing ring (13) on both inner sidewalls, and the sealing extrusion section (12) is provided with a second sealing ring (14) on both the inner and outer sides. The first sealing ring (13) and the second sealing ring (14) can mesh with each other.

5. The pre-reserved hole structure for building pipes according to claim 1, characterized in that: The top of the wall structure (100) is provided with a waterproof layer (15), and the top of the waterproof layer (15) is provided with a surface decorative layer (16).

6. The pre-reserved hole structure for building pipes according to claim 5, characterized in that: The second sealing structure includes a second sealing groove (17), which extends downward from the surface decorative layer (16) to the wall structure (100). The opening of the second sealing groove (17) gradually decreases from bottom to top in a stepped manner. A second sealing component is provided inside the second sealing groove (17).

7. The pre-reserved hole structure for building pipes according to claim 6, characterized in that: The second sealing assembly includes a rigid sealing material (18), a flexible sealing ring (19), and an elastic sealant (20), wherein the rigid sealing material (18), the flexible sealing ring (19), and the elastic sealant (20) are distributed sequentially along the outer, middle, and inner layers of the second sealing groove (17).

8. The pre-reserved hole structure for building pipes according to claim 1, characterized in that: The bite edge (3) includes a connecting section (21), the inner end of which is connected to the outer wall of the pre-embedded sleeve (1), and a bite section (22) is provided on the outer side of the connecting section (21), the size of which is larger than that of the connecting section (21).

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