Displacement-preventing water-swelling interpolation type connecting structure

Abstract

The utility model relates to the technical field of municipal pipeline engineering, in particular to an anti-displacement water swelling interpolation type connecting structure which comprises an interpolation type connector and a municipal pipeline, the interpolation type connector is composed of an upper connecting portion, a lower connecting portion and a middle check ring which are integrally formed, and the upper connecting portion and the lower connecting portion are used for being connected with the municipal pipeline. Grooves are formed in the outer wall of the upper connecting part and the outer wall of the lower connecting part, and water swelling rubber rings are placed in the grooves. The check ring is provided with an anti-rotation hole along the circumference, and an anti-rotation structure is arranged in the hole. According to the utility model, the groove is formed in the internal insertion type joint and the water swelling adhesive tape is placed, so that the problem of leakage caused by untight threaded connection is solved; the hole is formed in the check ring and connected with the rotation limiting column of the municipal pipeline or the hole is filled with plastic glue, so that the connector is prevented from rotating. The internally-inserted connecting structure is good in anti-seepage effect, stable in connection and capable of being widely applied to municipal pipeline engineering.

Description

Technical Field

[0001] This utility model relates to the field of municipal pipeline engineering technology, specifically to an anti-displacement, water-expanding internal connection structure. Background Technology

[0002] In municipal pipeline engineering, insert-type connectors need to be connected to the municipal pipeline to form a complete product. Different sizes of retaining rings are used depending on the pipe specifications. Insert-type connectors typically have multiple threads on their outer wall, with a retaining ring in the middle, and connect to the municipal pipeline threads through a socket-and-groove compression method. Existing insert-type connectors have some defects in actual construction: firstly, the threaded connection is prone to loosening, leading to water leakage; secondly, the connector may rotate during construction, causing the connection to loosen and lead to leakage, seriously affecting the construction quality and safety of municipal pipelines. Utility Model Content

[0003] The purpose of this utility model is to address the problem of leakage caused by joint rotation or loose threaded connection in existing municipal pipeline connection structures during construction. It provides an internal insertion connection structure for municipal pipelines. By creating grooves on the outer wall of the internal insertion joint and placing water-swellable rubber strips, the leakage problem caused by loose threaded connection is solved. By creating holes in the retaining ring and setting an anti-rotation structure, the joint rotation is prevented.

[0004] To solve the above-mentioned technical problems, this utility model provides an internal insertion connection structure for municipal pipelines, including an internal insertion joint and a municipal pipeline. The internal insertion joint is composed of an integrally formed upper connecting part, a lower connecting part, and a retaining ring in the middle. The upper connecting part and the lower connecting part are used to connect with the municipal pipeline. Grooves are opened on the outer walls of the upper connecting part and the lower connecting part, and water-swellable rubber rings are placed in the grooves. The retaining ring has anti-rotation holes opened along its circumference, and anti-rotation structures are provided in the holes.

[0005] Preferably, the groove is located near the retaining ring, with a depth of 5mm and a width of 10mm, to fit the size of most water-swellable rubber rings on the market.

[0006] Preferably, the number of holes is 4 to 8, and the diameter of the holes is determined according to the width of the retaining ring. The wider the retaining ring, the larger the diameter of the holes.

[0007] One implementation method involves anti-rotation structures consisting of rotation-limiting posts installed on the end face of the municipal pipeline. These posts are milled from the pipeline's end face, and their number, position, and size are adapted to the opening. The rotation-limiting posts are inserted into the opening to restrict the rotation of the insert-type connector.

[0008] As another implementation, the anti-rotation structure is a plastic glue filled in the hole. On the one hand, the plastic glue bonds and fixes the pipe to the internal plug-in connector. On the other hand, the plastic glue has a high hardness after it is completely solidified, which can restrict the rotation of the internal plug-in connector from two aspects.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention effectively solves the rotation problem of the insert-type connector by creating a hole in the retaining ring to connect with the rotation-limiting post on the end face of the municipal pipeline, or by filling the hole with plastic glue, thus improving the stability of the connection. Grooves are set on the outer walls of the upper and lower connecting parts, and water-swellable rubber strips are installed inside. Utilizing the water-swellable properties of the rubber strips, a 99% leak-proof effect can be achieved, significantly improving the leak-proof performance. The insert-type connection structure of this invention is rationally designed and easy to operate, effectively improving the construction efficiency and quality of municipal pipelines and reducing subsequent maintenance costs. Attached Figure Description

[0011] Figure 1 This is a half-sectional view of the insert connector in Embodiment 1.

[0012] Figure 2 yes Figure 1 The main view.

[0013] Figure 3 This is a half-sectional view of the municipal pipeline in Example 1.

[0014] Figure 4 This is a half-sectional view of the intercalation connection structure of Embodiment 1.

[0015] Figure 5 This is a half-sectional view of the intercalation connection structure in Embodiment 2.

[0016] Figure label:

[0017] 10-Internal insertion connector; 11-Upper connection part; 12-Retaining ring; 13-Lower connection part; 14-Groove; 15-Hole; 20-Municipal pipeline; 21-Switch limiter; 30-Water-swellable rubber ring; 40-Plastic adhesive. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example 1

[0020] This embodiment provides an anti-displacement, water-swellable, internal insertion connection structure, such as... Figures 1-4 As shown, the device includes an internal connector 10 and a municipal pipeline 20. The internal connector 10 is a cast iron part, consisting of an integrally formed upper connecting part 11, a lower connecting part 13, and a raised retaining ring 12 in the middle. Both the upper connecting part 11 and the lower connecting part 13 are provided with threads for socket connection with the municipal pipeline 20. The outer walls of the upper connecting part 11 and the lower connecting part 13 are provided with grooves 14 near the retaining ring 13. The grooves 14 are 5mm deep and 10mm wide. A water-swellable rubber ring 30 is placed in the grooves 14. When the connection between the connector thread and the pipeline thread is not tight, water seeps into the water-swellable ring, and the rubber ring expands upon contact with water to achieve a 99% leak-proof effect.

[0021] The retaining ring 12 has six anti-rotation holes 15 along its circumference. The diameter of the holes 15 is determined according to the width of the retaining ring 12. The wider the retaining ring 12, the larger the diameter of the holes 15. When the municipal pipeline 20 is machined, cylindrical rotation-limiting posts 21 are formed on its end face. The number, position and size of the rotation-limiting posts 21 are adapted to the holes 15. When the municipal pipeline 20 is connected to the plug-in adapter 10, the rotation-limiting posts 21 are inserted into the holes 15, thereby limiting the rotation of the plug-in adapter 10.

[0022] Example 2

[0023] This embodiment provides an anti-displacement, water-swellable, internal insertion connection structure, such as... Figure 5 As shown, the difference from Embodiment 1 is that it is not necessary to mill the rotation limiting post on the municipal pipeline 20. Instead, a water-swellable rubber ring 30 is installed in the groove 14 of the insert-type connector 10. After the municipal pipeline 20 is connected to the insert-type connector 10, plastic glue 40 is filled in the hole 15 of the retaining ring 12. After the plastic glue 40 solidifies, it can play the role of limiting rotation. The rubber ring 30 can play the role of preventing leakage when it is exposed to water.

[0024] The above description is merely the preferred embodiment of this utility model. It should be noted that, for those skilled in the art, various modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from its principles, and these modifications or substitutions can also achieve the technical effects of this utility model, and should also be considered within the protection scope of this utility model.

Claims

1. A displacement-resistant, water-swellable, internally inserted connection structure, comprising an internally inserted connector (10) and a municipal pipeline (20), wherein the internally inserted connector (10) is composed of an integrally formed upper connecting part (11), a lower connecting part (13), and a retaining ring (12) in the middle, wherein the upper connecting part (11) and the lower connecting part (13) are used to connect with the municipal pipeline (20), characterized in that: Grooves (14) are provided on the outer walls of the upper connecting part (11) and the lower connecting part (13), and water-swellable rubber rings (30) are placed in the grooves (14); the retaining ring (12) has anti-rotation holes (15) along its circumference, and anti-rotation structures are provided in the holes (15).

2. The interpositional connection structure according to claim 1, characterized by: The groove (14) is formed near the retaining ring (12), and the groove (14) has a depth of 5 mm and a width of 10 mm.

3. The interpositional connection structure of claim 2, wherein: The number of holes (15) is 4 to 8. The diameter of the holes (15) is determined according to the width of the retaining ring (12). The wider the retaining ring (12), the larger the diameter of the holes (15).

4. The interpositional connection structure according to claim 3, wherein: The anti-rotation structure is a rotation-limiting column (21) installed on the end face of the municipal pipeline (20). The number, position and size of the rotation-limiting column (21) are adapted to the hole (15).

5. The interpositional connection structure of claim 4, wherein: The aforementioned rotation limit post (21) is milled from the end face of the municipal pipeline (20).

6. The interpositional connection structure of claim 2, wherein: The anti-rotation structure is plastic glue (40) filled in the hole (15).

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