Double-wall corrugated pipe

Abstract

The utility model discloses a double-wall corrugated pipe, which belongs to the field of municipal construction, and comprises a double-wall corrugated pipe, a plurality of drainage grooves are arranged in the double-wall corrugated pipe, filter cloth is arranged on the corrugated surface of the outer wall of the double-wall corrugated pipe, and the port ends of the two sides of the double-wall corrugated pipe are provided with sleeved leakage-proof structures. Compared with the prior art, the sealing device has the advantages that the sealing ring is in sliding connection with the stepped shaft sleeve (the inner ring of the sealing ring is pasted in the fixing groove through waterproof glue), so that the sealing connection between the insertion port and the stepped shaft sleeve is completed, and the size of the stepped shaft sleeve is generally not larger than the diameter of the double-wall corrugated pipe; therefore, the condition that the filter cloth cannot be sealed when being wound and sealed is avoided, and a metal fixing piece is not used in the sealing process, so that the condition that the filter cloth is scratched after being wound at the connecting part is avoided.

Description

Technical Field

[0001] The utility model relates to the field of municipal construction, and specifically refers to a double-wall corrugated pipe. Background Art

[0002] With the continuous development of the city, in order to facilitate the smoothness of the construction road, the ground is usually paved into a high-hardness structure with concrete or bricks. Although this structure can make the ground have better bearing capacity, it will also affect the penetration of rainwater. This makes the ground in the city flooded when encountering heavy rain. In order to quickly drain the water on the road surface, people usually lay sewer pipes underground beside the road, and the accumulated water is discharged at a fixed point through the sewer pipes. Most of the existing drainage pipes adopt double-wall corrugated pipes.

[0003] Most of the existing double-wall corrugated pipes are extruded from HDPE materials. In order to enhance the air permeability of the pipes, people will open multiple drainage grooves on the outer wall of the double-wall corrugated pipes (the drainage grooves are mostly rectangular grooves. The drainage grooves of the perforated corrugated pipes are in the wave troughs and are strip-shaped. Due to the dual effects of the wave crests and the filter fabrics, the orifices are not easily blocked, overcoming the disadvantages of the flat-wall round-hole products being easily blocked and enhancing the drainage efficiency). Then, a filter cloth is wound around the pipe surface of the double-wall corrugated pipe to prevent silt from entering the pipe and causing congestion.

[0004] During the laying process of the pipes, people usually use fixed shaft sleeves or flange connections to fix the two. Although this fixing structure can effectively connect multiple double-wall corrugated pipes, it is very difficult to paste the filter cloth on the connection part after connection (the connecting parts will cut the filter cloth or the connection part is too high to cause bulges, resulting in the filter cloth not being able to seal effectively). This makes it very likely that the connection part will leak due to the corrosion of silt or sewage in subsequent use (the tools for connecting and fixing the double-wall corrugated pipes are usually metal parts). Since the filter cloth cannot be laid above the connection part, the sealing performance during use is reduced, which is likely to cause congestion in the pipes. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that after the connection and fixing method of the existing double-wall corrugated pipe, the filter cloth cannot be laid outside the connection part, thereby reducing the sealing performance of the double-wall corrugated pipe.

[0006] To solve the above technical problems, the technical solution provided by the present utility model is as follows: A double-wall corrugated pipe, including the double-wall corrugated pipe, several drainage grooves are provided inside the double-wall corrugated pipe, a filter cloth is provided on the corrugated surface of the outer wall of the double-wall corrugated pipe, and a socket leakage prevention structure is provided at both through-port ends of the double-wall corrugated pipe. The socket leakage prevention structure includes an insertion interface at one open end of the double-wall corrugated pipe, several sealing rings sleeved on the pipe wall of the insertion interface, and a stepped shaft sleeve at the other open end of the double-wall corrugated pipe. A fixing groove for fixing the inner wall of the sealing ring is provided on the outer wall of the pipe of the insertion interface.

[0007] As an improvement, several fixing blocks are provided at the outer wall end of the sealing ring, and the fixing blocks pass through the side wall of the stepped shaft sleeve.

[0008] As an improvement, the sealing ring is made of a corrosion-resistant high-elastic rubber material.

[0009] As an improvement, the fixing groove is connected to the inner wall of the sealing ring through waterproof glue.

[0010] As an improvement, the stepped shaft sleeve is slidably connected to the outer wall of the sealing ring through body contact.

[0011] As an improvement, both ends of the filter cloth are sealed and connected by a heat sealer.

[0012] The advantages of the present utility model compared with the existing stepped shaft sleeve technology are as follows: The device completes the sealing connection between the insertion interface and the stepped shaft sleeve through the sliding connection between the sealing ring and the stepped shaft sleeve (the inner ring of the sealing ring is pasted in the fixing groove with waterproof glue). The size of the stepped shaft sleeve usually does not exceed the diameter of the double-wall corrugated pipe, which makes it impossible for the filter cloth to be unable to be sealed during winding and sealing. And because no metal fixing parts are used during the sealing process, the filter cloth will not be cut after being wound around the connection part. Description of the Drawings

[0013] Figure 1 It is the overall structure diagram of a double-wall corrugated pipe of the present utility model.

[0014] Figure 2 It is the overall structure sectional view of a double-wall corrugated pipe of the present utility model.

[0015] Figure 3 It is the exploded view of the double-wall corrugated pipe of a double-wall corrugated pipe of the present utility model.

[0016] Figure 4 It is the structure diagram of a double-wall corrugated pipe of a double-wall corrugated pipe of the present utility model.

[0017] As shown in the figure: 1. Double-wall corrugated pipe; 2. Drainage groove; 3. Filter cloth; 4. Socket leak-proof structure; 41. Insertion interface; 42. Sealing ring; 421. Fixed groove; 422. Fixed block; 43. Step bushing. Specific implementation mode

[0018] The following further elaborates on the present utility model in conjunction with the attached drawings.

[0019] As shown in the attached drawings of the specification Figure 1 、 2 、4, it includes a double-wall corrugated pipe 1. Inside the double-wall corrugated pipe 1, there are several drainage grooves 2. On the corrugated surface of the outer wall of the double-wall corrugated pipe 1, there is a filter cloth 3. Both ends of the filter cloth 3 are hermetically connected by a heat sealer. The discharged silt is isolated by the filter cloth to avoid the blockage of the double-wall corrugated pipe 1. Among them, the drainage groove 2 is usually a rectangular structure to ensure that there will be no blockage at the orifice, thereby enhancing the drainage efficiency.

[0020] As shown in the attached drawings of the specification Figure 2 、 3 、4, socket leak-proof structures 4 are provided at both through-port ends of the double-wall corrugated pipe 1. The socket leak-proof structure 4 includes an insertion interface 41 at one open end of the double-wall corrugated pipe 1, several sealing rings 42 sleeved on the pipe wall of the insertion interface 41, and a step bushing 43 at the other open end of the double-wall corrugated pipe 1. The sealing ring 42 is made of corrosion-resistant high-elastic rubber material. On the outer wall of the pipe of the insertion interface 41, there is a fixed groove 421 for fixing the inner wall of the sealing ring 42. On the outer wall end of the sealing ring 42, there are several fixed blocks 422. The fixed blocks 422 pass through the side wall of the step bushing 43. The fixed groove 421 is connected to the inner wall of the sealing ring 42 by waterproof glue. The step bushing 43 is slidably connected to the outer wall of the sealing ring 42 through body contact. The outer diameter of the insertion interface 41 is slightly larger than the diameter of the double-wall corrugated pipe 1. The depth of the fixed groove 421 is usually the difference between the outer diameter of the insertion interface 41 and the diameter of the double-wall corrugated pipe 1. In this way, when the sealing ring 42 is stuck in the fixed groove 421, it will not affect the impact resistance of the insertion interface 41 and avoid fracture at the position of the fixed groove 421. The inner hole diameter of the step bushing 43 usually corresponds to the outer diameter of the insertion interface 41 and the outer diameter of the sealing ring 42, and the maximum outer diameter of the step bushing 43 is equal to the outer diameter of the corrugated section of the double-wall corrugated pipe 1. In this way, after connection, the filter cloth 3 can be normally wound to ensure its sealing performance (the filter cloth 3 at the connection part needs to be manually wound and sealed after laying and connection).

[0021] In the specific implementation of the present utility model, the insertion interface 41 is inserted into the sealing ring 42 fixing sleeve in the stepped shaft sleeve 43 through its own elasticity, and the fixing block 422 is snapped into the through groove of the side fixing block 422 of the stepped shaft sleeve 43 for positioning; waterproof glue is applied to the inner ring of the sealing ring 42, and it is sleeved in the fixing groove 421 at the outer wall end of the insertion interface 41 for fixing and sealing. A filter cloth 3 is wound around the outer wall end of the stepped shaft sleeve 43, and it is sealed using a heat sealer.

[0022] The above description has been made on the present utility model and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A double-wall corrugated pipe, comprising a double-wall corrugated pipe (1), wherein a plurality of drainage grooves (2) are arranged inside the double-wall corrugated pipe (1), and a filter cloth (3) is arranged on the corrugated surface of the outer wall of the double-wall corrugated pipe (1), characterized in that: Both ends of the double-wall corrugated pipe (1) are provided with a socket leakage prevention structure (4). The socket leakage prevention structure (4) includes an insertion interface (41) at one open end of the double-wall corrugated pipe (1), several sealing rings (42) sleeved on the pipe wall of the insertion interface (41), and a stepped shaft sleeve (43) at the other open end of the double-wall corrugated pipe (1). A fixing groove (421) for fixing the inner wall of the sealing ring (42) is provided on the outer wall of the pipe of the insertion interface (41).

2. The double-wall corrugated pipe according to claim 1, characterized in that: Several fixing blocks (422) are provided at the outer wall end of the sealing ring (42), and the fixing blocks (422) penetrate through the side wall of the stepped shaft sleeve (43).

3. A double-wall corrugated pipe according to claim 1, characterized in that: The sealing ring (42) is made of a corrosion-resistant high-elastic rubber material.

4. A double-wall corrugated pipe according to claim 1, characterized in that: The fixing groove (421) is connected to the inner wall of the sealing ring (42) through waterproof glue.

5. A double-wall corrugated pipe according to claim 1, characterized in that: The stepped shaft sleeve (43) is slidably connected to the outer wall of the sealing ring (42) through body contact.

6. A double-wall corrugated pipe according to claim 1, characterized in that: Both ends of the filter cloth (3) are hermetically connected by a heat sealer.

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