Embedded water stop section
By using a wedge-shaped sealing ring, a dovetail groove, and a guide tube design, the problem of poor water tightness caused by the gap between the pre-embedded waterstop and the upper pipeline was solved, achieving good sealing and stable connection, preventing pull-out, and improving construction quality.
Patent Information
- Application Number
- CN202520037655.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The existing pre-embedded waterstop joint has a gap after connecting with the pipeline above, resulting in poor water tightness and causing backflow and odor.
The design employs a wedge-shaped sealing ring and a dovetail groove for interlocking, combined with a guide tube and structures such as annular barbs and concave-convex parts to achieve a sealed and stable connection and prevent pull-out.
It achieves a good seal between the pre-embedded water-stop joint and the upper pipeline, avoids backflow and odor, improves connection reliability and durability, and ensures stable installation in concrete.
Smart Images
Figure CN223549944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water-stop joints, and further to pre-embedded water-stop joints. Background Technology
[0002] In building construction, the installation of water supply and drainage pipes has always been a critical step. In order to simplify the construction process, improve the construction quality and project progress, waterstop joints are pre-embedded in concrete to form an integral part of the concrete, which can effectively solve the leakage problem caused by cracks in the concrete bonding interface in traditional processes.
[0003] However, in the existing technology, after the pre-embedded waterstop joint is aligned and connected with other pipes above it, there is still a gap between the diameters of the two sides, which results in poor water tightness between the waterstop joint and the pipes above after installation, thus causing backflow and odor. Utility Model Content
[0004] The purpose of this utility model is to provide a pre-embedded water-stop joint, which solves the technical problem of poor water tightness of pre-embedded water-stop joints in the prior art. It can achieve a good seal between the pre-embedded water-stop joint and the pipeline above, with good water tightness and no backflow or odor.
[0005] To achieve the above objectives, this utility model provides a pre-embedded waterstop joint, including a body, which includes an upper bearing pipe and a lower bearing pipe connected coaxially, and also includes a wedge-shaped sealing ring. The inner wall of the upper bearing pipe is provided with an annular dovetail groove, and one end of the wedge-shaped sealing ring is engaged in the dovetail groove.
[0006] In some embodiments, a guide tube is coaxially connected to the end of the upper bearing pipe away from the lower bearing pipe, and the diameter of the guide tube gradually increases along the direction away from the upper bearing pipe.
[0007] In some embodiments, the outer side of the upper bearing pipe is provided with stiffening ribs, and the extending direction of the stiffening ribs is parallel to the extending direction of the upper bearing pipe.
[0008] In some embodiments, the stiffening ribs are a plurality of ribs, which are evenly arranged around the circumference of the upper bearing pipe.
[0009] In some embodiments, the outer side of the lower support pipe is provided with annular barbs, the cross-sectional shape of the annular barbs is a right triangle, and the side of the annular barbs away from the upper support pipe is perpendicular to the outer wall of the lower support pipe.
[0010] In some embodiments, the annular barbs are a plurality of barbs and are arranged at intervals along the axial direction of the lower bearing pipe.
[0011] In some embodiments, the lower bearing tube extends outward from the end furthest from the upper bearing tube to form a ring-shaped balance support.
[0012] In some embodiments, the side of the balance support away from the upper bearing pipe is a rough surface.
[0013] In some embodiments, the circumferential inner wall of the upper bearing pipe and the circumferential inner wall of the lower bearing pipe are inclined and smoothly transitioned, and along the direction from the upper bearing pipe to the lower bearing pipe, the radial dimension at the connection between the circumferential inner walls of the upper bearing pipe and the circumferential inner walls of the lower bearing pipe gradually decreases.
[0014] In some embodiments, the circumferential outer wall of the body is provided with protrusions and recesses, which are located at the connection between the upper and lower bearing pipes.
[0015] Compared with the prior art, the pre-embedded waterstop joint provided by this utility model has the following beneficial effects:
[0016] 1. The pre-embedded water-stop joint provided by this utility model, by setting a wedge-shaped sealing ring on the inner side of the upper bearing pipe, when the upper pipe is inserted into the upper bearing pipe, the wedge-shaped sealing ring will block the gap between the upper bearing pipe and the upper pipe, thereby achieving a good sealing function and solving the problems of backflow and odor. At the same time, since the wedge-shaped sealing ring is connected to the upper bearing pipe by snapping with the dovetail groove, this mechanical connection method improves the reliability of the connection between the wedge-shaped sealing ring and the upper bearing pipe and makes it more durable.
[0017] 2. The pre-embedded waterstop provided by this utility model guides the pipe opening of the upper pipe through the guide pipe when the upper bearing pipe is aligned with the upper pipe, thereby making the alignment of the pre-embedded waterstop with the upper pipe more convenient and faster.
[0018] 3. The pre-embedded waterstop provided by this utility model, when the pre-embedded waterstop is prefabricated in the concrete, forms a structure similar to a snap-fit between the pre-embedded waterstop and the concrete by setting annular barbs and concave and convex parts, thereby preventing the pre-embedded waterstop from being pulled vertically out of the concrete.
[0019] 4. The pre-embedded waterstop provided by this utility model can be placed more stably on the bottom formwork during the prefabrication process by using the balance support and the rough surface below it. Attached Figure Description
[0020] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.
[0021] Figure 1 This is a three-dimensional schematic diagram of a pre-embedded waterstop joint;
[0022] Figure 2 This is a cross-sectional view of the pre-embedded waterstop joint;
[0023] Figure 3 This is a top view of the pre-embedded waterstop joint;
[0024] Figure 4 This is a bottom view of the pre-embedded waterstop joint;
[0025] Explanation of icon numbers:
[0026] 1. Upper support pipe, 2. Lower support pipe, 3. Guide pipe, 4. Circular barb, 5. Balance support, 6. Mounting ear, 7. Wedge seal ring, 8. Reinforcing rib, 9. Dovetail groove, 10. Connection between the circumferential inner wall of the upper support pipe and the circumferential inner wall of the lower support pipe, 11. Threaded hole, 12. Circular reinforcing ring, 13. First inclined surface, 14. Second inclined surface. Detailed Implementation
[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0028] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0029] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] In one embodiment, such as Figures 1-3 As shown, this embodiment discloses a specific implementation of a pre-embedded water-stop joint, including a body comprising an upper support pipe 1 and a lower support pipe 2 coaxially connected, allowing the upper pipe to communicate with the lower pipe through the body. The pre-embedded water-stop joint also includes a wedge-shaped sealing ring 7. The inner wall of the upper support pipe 1 has a circumferentially formed dovetail groove 9, and one end of the wedge-shaped sealing ring 7 is engaged within the dovetail groove 9. When the upper pipe is inserted into the upper support pipe 1, the wedge-shaped sealing ring 7 blocks the gap between the upper support pipe 1 and the upper pipe, thus achieving a good sealing function and solving the problems of backflow and odor. Simultaneously, since the wedge-shaped sealing ring 7 is connected to the upper support pipe 1 by engaging with the dovetail groove 9, this mechanical connection improves the reliability and durability of the connection between the wedge-shaped sealing ring 7 and the upper support pipe 1. When liquid in the upper pipe needs to flow into the lower pipe, it will not overflow through the gap between the upper support pipe 1 and the upper pipe.
[0033] In one embodiment, such as Figure 1 As shown, a guide pipe 3 is coaxially connected to the end of the upper connector 1 away from the lower connector 2. The diameter of the guide pipe 3 gradually increases along the direction away from the upper connector 1. Specifically, the guide pipe 3 is trumpet-shaped with a smooth inner surface, so the guide pipe 3 can play a guiding role, making it easier and faster to align the pre-embedded waterstop with the pipeline above.
[0034] In one embodiment, such as Figure 1 As shown, stiffening ribs 8 are provided on the outer side of the upper support pipe 1, and the extending direction of the stiffening ribs 8 is parallel to the extending direction of the upper support pipe 1. In this embodiment, there are six stiffening ribs 8, which are evenly arranged around the circumference of the upper support pipe 1. By adding stiffening ribs 8, the structural strength of the pre-embedded waterstop joint at the upper support pipe 1 can be increased.
[0035] Of course, in other embodiments, the number of stiffening ribs 8 can be 1, 2, 3 or even more, which can be set according to the actual structural strength requirements, and will not be elaborated here.
[0036] In one embodiment, such as Figures 1-2 As shown, the lower support pipe 2 has an annular barb 4 on its outer side. The cross-sectional shape of the annular barb 4 is a right triangle, and the annular barb 4 is located on the side away from the upper support pipe 1. Figure 2The lower side of the annular barb 4 is perpendicular to the outer wall of the lower support pipe 2. In this embodiment, there are four annular barbs 4, which are spaced apart along the axial direction of the lower support pipe 2. During construction, the annular barbs 4 with a right-angled triangular cross-section can significantly improve the pull-out resistance of the pre-embedded waterstop in the concrete, thereby preventing it from being pulled out vertically when the precast formwork is dismantled.
[0037] Of course, in other embodiments, the number of annular barbs 4 is not limited to this example. One, two or even more can be set, depending on the actual situation. This will not be elaborated here.
[0038] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the lower support pipe 2 extends outward from the end away from the upper support pipe 1 to form a ring-shaped balance support 5. The balance support 5 is a ring-shaped plate structure. The balance support 5 is also provided with an outwardly horizontally extending mounting ear 6. The mounting ear 6 is provided with a threaded hole 11. During construction, the body of the pre-embedded waterstop is stably placed on the bottom template through the balance support 5. The mounting ear 6 is detachably connected to the bottom template with the bolt assembly through the threaded hole 11, thereby preventing the pre-embedded waterstop from shifting during the concrete pouring process.
[0039] To increase the friction between the embedded waterstop and the bottom formwork, the side of the balance support 5 away from the upper support pipe 1 is rough, so that the embedded waterstop can be placed more stably on the bottom formwork.
[0040] In one embodiment, such as Figure 2 As shown, the circumferential inner wall of the upper pipe 1 and the circumferential inner wall of the lower pipe 2 are smoothly inclined. Along the direction from the upper pipe 1 to the lower pipe 2, the radial dimension of the connection 10 between the circumferential inner walls of the upper pipe and the lower pipe gradually decreases, thus achieving a change in diameter. The smooth inclined transition can not only increase the pressure inside the pipe and accelerate the flow of water, but also avoid blockage and residue at this point.
[0041] In one embodiment, such as Figure 1 and Figure 2 As shown, the outer circumferential wall of the main body is provided with concave and convex portions, which are located at the connection between the upper support pipe 1 and the lower support pipe 2. Specifically, the concave and convex portions include an annular reinforcing ring 12 disposed on the outer circumferential side of the main body. The annular reinforcing ring 12 and the outer wall of the upper support pipe 1 form an annular reinforcing groove, and the opening direction of the reinforcing groove is opposite to that of the lower support pipe 2. When the pre-embedded waterstop is precast in the concrete, the annular reinforcing ring 12 forms a snap-fit structure with the concrete, thereby further preventing the pre-embedded waterstop from being vertically pulled out of the concrete.
[0042] Furthermore, such as Figure 1 and Figure 2 As shown, the concave and convex portions may also include a first inclined surface 13 and a second inclined surface 14 with opposite inclination directions. The first inclined surface 13 and the second inclined surface 14 are both circumferentially arranged on the circumferential outer wall of the body, thereby forming a snap-fit position between the first inclined surface 13 and the second inclined surface 14 on the circumferential outer wall of the body. When the pre-embedded waterstop is prefabricated in the concrete, the snap-fit position can also form a structure similar to a snap-fit with the concrete, thereby preventing the pre-embedded waterstop from being vertically pulled out of the concrete together with the annular reinforcing ring 12.
[0043] The specific construction process of this pre-embedded waterstop joint is as follows:
[0044] First, place multiple precast templates and reinforcing bars at the required locations. After confirming the location of the waterstop section to be embedded, place the waterstop section on the bottom template. At this time, the balance support abuts against the bottom template. Then, install the waterstop section on the bottom template by passing the bolt assembly through the threaded holes on the mounting ears. After sealing both ends of the waterstop section, pour concrete and vibrate it thoroughly during the pouring process to ensure that the concrete is dense. After curing, demold the waterstop section and embed it in the concrete.
Claims
1. A pre-embedded waterstop joint, comprising a body, said body including an upper bearing pipe and a lower bearing pipe coaxially connected, characterized in that, It also includes a wedge-shaped sealing ring, wherein an annular dovetail groove is provided on the inner wall of the upper bearing pipe, and one end of the wedge-shaped sealing ring is engaged in the dovetail groove.
2. The pre-embedded waterstop joint according to claim 1, characterized in that, The upper bearing pipe is coaxially connected to a guide pipe at the end furthest from the lower bearing pipe, and the diameter of the guide pipe gradually increases along the direction away from the upper bearing pipe.
3. The pre-embedded waterstop joint according to claim 1, characterized in that, The outer side of the upper bearing pipe is provided with stiffening ribs, and the extension direction of the stiffening ribs is parallel to the extension direction of the upper bearing pipe.
4. The pre-embedded waterstop joint according to claim 3, characterized in that, The stiffening ribs are a plurality of ones, and the plurality of stiffening ribs are evenly arranged around the circumference of the upper bearing pipe.
5. The pre-embedded waterstop joint according to claim 1, characterized in that, The lower support pipe is provided with annular barbs on its outer side. The cross-sectional shape of the annular barbs is a right triangle, and the side of the annular barbs away from the upper support pipe is perpendicular to the outer wall of the lower support pipe.
6. The pre-embedded waterstop joint according to claim 5, characterized in that, The annular barbs are a plurality of ones, and are arranged at intervals along the axial direction of the lower bearing pipe.
7. The pre-embedded waterstop joint according to claim 1, characterized in that, The lower support pipe extends outward from the end furthest from the upper support pipe to form a ring-shaped balance support.
8. The pre-embedded waterstop joint according to claim 7, characterized in that, The side of the balance support away from the upper bearing pipe is a rough surface.
9. The pre-embedded waterstop joint according to claim 1, characterized in that, The circumferential inner wall of the upper bearing pipe and the circumferential inner wall of the lower bearing pipe are smoothly inclined, and along the direction from the upper bearing pipe to the lower bearing pipe, the radial dimension at the connection between the circumferential inner walls of the upper bearing pipe and the lower bearing pipe gradually decreases.
10. The pre-embedded waterstop joint according to claim 1, characterized in that, The outer circumferential wall of the body is provided with a concave-convex portion, which is located at the connection between the upper bearing pipe and the lower bearing pipe.