Double-walled corrugated tube inner pipe member

Abstract

The utility model discloses a double -walled bellows inserts pipe fitting, including the pipe fitting body, the outer wall of pipe fitting body is flat, the outer wall of pipe fitting body is provided with a plurality of sealing recess for accommodating sealing structure glue, the outer wall middle position of pipe fitting body is provided with at least one limit protruding, and the both ends port of pipe fitting body is provided with the guide mouth. The pipe fitting body in the utility model is installed in the double -walled bellows inside, effectively utilizes the mechanical performance advantage of the structural feature of double -walled bellows, solves the mechanical performance weak problem of pipe material junction, and the pipe fitting is protected by double -walled bellows, and the possibility of pipe fitting damage is eradicated.

Description

Technical Field

[0001] This utility model relates to the field of double-wall corrugated pipe technology, and in particular to an internal fitting for a double-wall corrugated pipe. Background Technology

[0002] There are three main types of connections for conventional double-wall corrugated pipes: socket connection, half-fixed connection, and sleeve fitting connection. Among these, conventional sleeve fitting connections have the following problems:

[0003] 1. When a sleeve fitting is fitted over a double-walled corrugated pipe, the connection point loses the mechanical properties provided by the special structure of the double-walled corrugated pipe, thus weakening its pressure resistance.

[0004] 2. Due to the need to install sealing rubber rings, there is a large gap between the conventional sleeve fittings and the double-wall corrugated pipe, which further reduces the pressure-bearing capacity of the connection and makes the sleeve fittings more prone to damage.

[0005] 3. The conventional pipe fittings and double-wall corrugated pipes are sealed by the fit of the sealing rubber ring, and the sealing length is much shorter than the actual length of the pipe fittings.

[0006] 4. Due to the special corrugated structure of the outer wall of the double-wall corrugated pipe, the sealing rubber ring used is relatively thick, which makes installation difficult and requires a large amount of rubber material.

[0007] Therefore, in response to the above problems of conventional sleeve fittings, this internal insertion fitting was designed, and its installation and connection methods were clarified. Utility Model Content

[0008] The purpose of this invention is to provide a double-walled corrugated pipe insert fitting to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A double-walled corrugated pipe insert includes a pipe body, the outer wall of which is straight, and the outer wall of which is provided with a plurality of sealing grooves for accommodating sealing structural adhesive. At least one limiting protrusion is provided in the middle of the outer wall of the pipe body, and guide ports are provided at both ends of the pipe body.

[0011] Furthermore, the number of sealing grooves is 3 to 5.

[0012] Furthermore, the width of the sealing groove is 1 to 1.5 cm, and the depth of the sealing groove is 1 to 3 mm.

[0013] Furthermore, the height of the limiting protrusion is 5-10 mm.

[0014] Furthermore, the guide opening is a chamfered structure, and the chamfered angle is 15~20 degrees.

[0015] Furthermore, the difference between the outer diameter of the pipe fitting body and the inner diameter of the adapted double-wall corrugated pipe is 0.5~1.5 mm.

[0016] Beneficial effects:

[0017] The pipe fitting body in this utility model is installed inside the double-wall corrugated pipe, which effectively utilizes the mechanical performance advantages brought by the structural characteristics of the double-wall corrugated pipe, solves the problem of weak mechanical performance at the pipe connection, and the pipe fitting is protected by the double-wall corrugated pipe, eliminating the possibility of pipe fitting damage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the present invention and a double-walled corrugated pipe.

[0020] The following are the labels in the diagram: 1. Pipe body; 2. Limiting protrusion; 3. Sealing groove; 4. Guide port; 5. Double-wall corrugated pipe; 6. Sealing structural adhesive. Detailed Implementation

[0021] Example

[0022] This embodiment provides a double-walled corrugated pipe insert fitting, such as... Figure 1 and Figure 2 As shown, the fitting includes a pipe body 1, the outer wall of which is entirely flat, facilitating installation inside the double-walled corrugated pipe 5. This flatness also allows for full-length sealing, meaning the sealing length matches the length of the pipe body 1, significantly improving the sealing effect. The outer wall of the pipe body 1 has multiple sealing grooves 3, which accommodate the sealing adhesive 6, forming multiple sealing barriers. The use of the sealing adhesive 6 for connection fully utilizes its lubricating effect before curing, greatly reducing installation difficulty and improving construction efficiency. A limiting protrusion 2 is also provided in the middle of the outer wall of the pipe body 1 to ensure consistent connection depth on both sides. Guide ports 4 are provided at both ends of the pipe body 1, effectively reducing the impact of water flow on the pipe body 1 during system drainage, thus improving the service life of the pipe and the entire system and reducing the possibility of system leakage.

[0023] Preferably, the number of sealing grooves 3 is 3 to 5, depending on the length of the adaptable double-walled corrugated pipe 5 and the pipe fitting. The width of the sealing groove 3 is 1 to 1.5 cm. The depth of the sealing groove 3 is 1 to 3 mm, depending on the wall thickness of the pipe fitting.

[0024] Preferably, the height of the limiting protrusion 2 is 5 to 10 mm, depending on the diameter and laminated wall thickness of the compatible pipe.

[0025] Preferably, the guide port 4 is a chamfered structure with a chamfer angle of α. Depending on the wall thickness of the pipe fitting, the angle of α ranges from 15 to 20 degrees.

[0026] Preferably, the difference between the outer diameter of the pipe body 1 and the inner diameter of the adapted double-walled corrugated pipe 5 is 0.5~1.5 mm, to form an annular gap for applying the sealing structural adhesive 6. The smaller connection gap can significantly reduce the thickness and amount of sealing material used, while improving its sealing effect.

[0027] Instructions for use: During construction, first apply the sealing structural adhesive 6 evenly to the outer wall of the pipe body 1 and the inner wall of the sealing groove 3 or the inner wall of the double-wall corrugated pipe 5. Then, align the two ends of the pipe body 1 with the two double-wall corrugated pipes 5 to be connected and insert them into the pipe. Push them in firmly until the limiting protrusion 2 in the middle of the pipe body is in close contact with the end faces of the pipe bodies on both sides. Then, let it stand until the sealing structural adhesive 6 is completely cured, thus forming a firm and sealed connection.

[0028] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not limit the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A double-walled corrugated pipe insert fitting, characterized in that: The device includes a pipe body, the outer wall of which is straight, and the outer wall of which is provided with multiple sealing grooves for accommodating structural sealant. At least one limiting protrusion is provided in the middle of the outer wall of the pipe body, and guide ports are provided at both ends of the pipe body.

2. The double-walled corrugated pipe insert fitting according to claim 1, characterized in that: The number of sealing grooves is 3 to 5.

3. The double-walled corrugated pipe insert fitting according to claim 1, characterized in that: The width of the sealing groove is 1 to 1.5 cm, and the depth of the sealing groove is 1 to 3 mm.

4. The double-walled corrugated pipe insert fitting according to claim 1, characterized in that: The height of the limiting protrusion is 5-10 mm.

5. The double-walled corrugated pipe insert fitting according to claim 1, characterized in that: The guide opening has a chamfered structure, and the chamfered angle is 15~20 degrees.

6. The double-walled corrugated pipe insert fitting according to claim 1, characterized in that: The difference between the outer diameter of the pipe fitting body and the inner diameter of the matching double-wall corrugated pipe is 0.5~1.5 mm.

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