Spiral rib hollow drain pipe

Abstract

A spiral rib hollow drainage pipe comprises an inner pipe wall, an outer pipe wall and spiral ribs, the outer pipe wall is tightly attached outside the inner pipe wall, the pipe wall profile extends along the cross-sectional direction and is sequentially spirally wound to extend and wrap the inner pipe wall, the embedded groove spirally extends along the outer surface of the inner pipe wall, the outer pipe wall comprises an outer film layer, a glass steel layer and a connecting layer, the connecting layer is tightly attached to the inner pipe wall and is embedded into the embedded groove through the embedded head to form a clamping connection, the spiral ribs are installed in the space formed by the first spiral groove and the second spiral groove, the glass steel layer wraps the connecting layer, and the outer film layer wraps the glass steel layer, the solid structure of the spiral ribs is used to enhance the structural strength of the pipe, the spiral ribs are not easy to bend and deform, the overall diameter size of the pipe is small, and the production cost of the drainage pipe is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipe technology, specifically to a spiral-ribbed hollow drainage pipe. Background Technology

[0002] As an innovative pipe structure, spiral pipes demonstrate significant technological advancements in both manufacturing processes and material selection. Traditional pipe manufacturing often relies on methods such as mold forming or welding, while spiral pipes are formed by spirally winding strips. This process not only simplifies the production process but also improves the adaptability and durability of the pipes. The cavity of the strip structure effectively reduces the transmission of water flow noise from inside the pipe to the external environment, achieving a noise reduction effect.

[0003] Among existing spiral wound pipes, one can refer to the Chinese utility model patent CN.202422951828.7, which discloses a spiral wound pipe with a pressure-resistant hollow structural wall, including an inner pipe wall and an outer pipe wall. The outer pipe wall is tightly attached to the outside of the inner pipe wall. The outer pipe wall includes a connecting layer, a reinforcing layer, and a protective layer from the inside out. The connecting layer is snapped onto the inner pipe wall, the reinforcing layer wraps around the connecting layer, and the protective layer covers the reinforcing layer. The structural strength of this spiral wound pipe is mainly provided by the fiberglass material of the connecting layer and the fiberglass mesh of the reinforcing layer. Fiberglass composite materials face the risk of overpressure bursting under pressure. Once an overpressure burst occurs, the spiral wound pipe section will instantly lose its structural strength, leading to pipe rupture. Therefore, in order to ensure sufficient strength, the safety thickness of the fiberglass composite material layer is relatively large, which increases the production cost. Utility Model Content

[0004] In order to overcome the problem that the size of the fiberglass composite material layer on the outer layer of the spiral pipe is too large and the cost is too high due to the structural strength of the fiberglass composite material in the existing technology, this utility model provides a spiral hollow drainage pipe.

[0005] The technical solution provided by this utility model is as follows:

[0006] A spiral-ribbed hollow drainage pipe, characterized in that it comprises an inner pipe wall, an outer pipe wall, and spiral ribs. The outer pipe wall is tightly attached to the outside of the inner pipe wall. The inner pipe wall comprises a hollow pipe wall profile, which has an integrally formed insert groove and a first spiral groove. The pipe wall profile extends along the cross-sectional direction and spirally extends and winds around the inner pipe wall in sequence. The insert groove extends spirally around the outer surface of the inner pipe wall. The outer pipe wall comprises an outer membrane layer, a fiberglass layer, and a connecting layer. The connecting layer and the peelable steel layer form a second spiral groove. The connecting layer is provided with an insert head. The connecting layer is tightly attached to the inner pipe wall and is inserted into the insert groove through the insert head to form a snap-fit. The spiral ribs are installed in the space formed by the first spiral groove and the second spiral groove. The fiberglass layer wraps the connecting layer, and the outer membrane layer wraps the fiberglass layer.

[0007] Furthermore, the spiral rib has a composite spiral structure, comprising an outer protective layer, a middle composite layer, and an inner metal layer. The composite layer tightly wraps around the metal layer, and the protective layer tightly wraps around the composite layer.

[0008] Furthermore, the spiral rib is a solid structure that extends along the cross-sectional direction and spirals around in sequence.

[0009] Furthermore, the thickness of the fiberglass layer ranges from 1 to 5 mm.

[0010] Furthermore, the fiberglass layer is formed using a fiberglass winding process.

[0011] Furthermore, the pipe profile is provided with multiple reinforcing ribs, which are installed between the inner and outer walls of the pipe profile.

[0012] Furthermore, the outer membrane layer is made of a polyurethane coating.

[0013] The beneficial effects of this utility model are as follows: the first spiral groove on the pipe wall profile and the second spiral groove on the connecting layer provide space for the installation of spiral reinforcements. The solid structure of the spiral reinforcements enhances the structural strength of the pipe. The spiral reinforcements are not easily bent or deformed. When the fiberglass material in the fiberglass layer fails, the pipe will still be constrained by the spiral reinforcements, so that the pipe can still be maintained within a safe range for a certain period of time and will not collapse instantly due to fiberglass failure. At the same time, because the presence of spiral reinforcements can provide structural strength to the pipe wall, the safe thickness of the fiberglass composite material layer is small, resulting in a smaller overall diameter of the pipe and reducing the production cost of the drainage pipe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a spiral-ribbed hollow drainage pipe.

[0015] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0016] Figure 3 This is a schematic diagram of the inner tube wall;

[0017] Figure 4 This is a schematic diagram of the outer tube wall. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] See Figures 1 to 4This utility model provides a spiral hollow drainage pipe, including an inner pipe wall 1, an outer pipe wall 2, and spiral ribs 3. The outer pipe wall 2 is tightly attached to the outside of the inner pipe wall 1. The inner pipe wall 1 includes a hollow pipe wall profile 11, which has an integrally formed insert groove 12 and a first spiral groove 13. The pipe wall profile 11 extends spirally along the cross-sectional direction to form the inner pipe wall 1. The insert groove 12 extends spirally along the outer surface of the inner pipe wall 1. The outer pipe wall 2 includes an outer membrane layer 21, a fiberglass layer 22, and a connecting layer 23. The connecting layer and the fiberglass layer 22 form a semi-open space, namely a second spiral groove 231. The connecting layer 23 is provided with an insert head 232. The first spiral groove 13 and the second spiral groove 231 form... The space is used to install the spiral reinforcement 3. The connecting layer 23 is tightly attached to the inner tube wall 1 and is embedded into the mounting groove 12 through the mounting head 232 to form a snap-fit. When the connecting layer 23 is attached to the inner tube wall 1 by winding, the mounting head 232 can fill the mounting groove 12 well to form a snap-fit, which improves the connection strength between the outer tube wall 2 and the inner tube wall 1. The fiberglass layer 22 wraps the connecting layer 23, and the outer film layer 21 wraps the fiberglass layer 22. The spiral reinforcement 3 is installed in the space formed by the second spiral groove 231 and the first spiral groove 13. The spiral reinforcement 3 is processed separately and is not integrally formed with the inner tube wall 1. This not only improves the assembly efficiency, but also reduces the processing difficulty and cost of the tube wall profile 11.

[0021] In this embodiment, the continuous spiral structure of the spiral rib 3 forms a constraint network similar to a "spring," which can effectively suppress pipe wall shrinkage and lateral deformation. This constraint effect can reduce the generation of cracks in the inner pipe wall 1 and the outer pipe wall 2. The spiral rib 3 is a composite spiral structure, including an outer protective layer 31, a middle composite layer 32, and an inner metal layer 33. The composite layer 32 tightly wraps the metal layer 33, and the protective layer 31 tightly wraps the composite layer 32. The composite layer 32 is made of carbon fiber reinforced matrix composite material. The high strength of the carbon fiber reinforced matrix composite material is achieved through the uneven structure of the fiber surface, which enables efficient stress transfer between the metal layer 33 and the composite layer 32 to form a coordinated load-bearing structure. At the same time, the carbon fiber... The reinforcing matrix composite material has high tensile strength, which generates a circumferential constraint force on the metal layer 33 to inhibit its bending deformation, thereby enhancing the compressive strength of the spiral rib 3. The protective layer 31 can provide buffering and protection for the spiral rib 3 body composed of the composite layer 32 and the metal layer 33. The constraint force generated by the spiral rib 3 on the pipe wall profile 11 will produce wear marks on the surface of the pipe wall profile 11. The protective layer 31 can form a buffer layer between the composite layer 32 and the surface of the pipe wall profile 11, which can avoid the problem of strength reduction of the composite layer 32 due to wear.

[0022] In this embodiment, the fiberglass layer 22 is made of fiberglass, which is a composite material formed by mixing glass fiber and resin in a certain proportion. Fiberglass has the advantages of being lightweight yet hard, having stable performance, and high mechanical strength, which can effectively enhance the strength and stability of the pipeline. However, fiberglass has disadvantages such as being sensitive to ultraviolet light and prone to aging. Therefore, an outer film layer 21 is tightly attached to the fiberglass layer 22. The outer film layer 21 is made of polyurethane coating, which can effectively isolate ultraviolet light from affecting the resin matrix inside the fiberglass. The connecting layer 23 is wound to insert the insert head into the insert groove, so that the connecting layer 23 has sufficient structural strength and stability, and at the same time, it can keep the outer wall of the connecting layer 23 in contact with the fiberglass layer 22 sufficiently smooth.

[0023] Preferably, the fiberglass layer 22 is formed by fiberglass winding process, and the outer wall of the connecting layer 23 in contact with the fiberglass layer 22 is smooth enough so that the connecting layer 23 can be directly used as the winding substrate when using fiberglass winding process. The winding process does not require the use of mold, so that the thickness of the fiberglass layer 22 can be adjusted according to different installation conditions of the spiral hollow drainage pipe.

[0024] Preferably, the pipe profile is provided with multiple reinforcing ribs 14, which are installed between the inner and outer walls of the pipe wall profile 11. When the pipe wall profile 11 is spirally wound along the cross-sectional direction, the reinforcing ribs 14 form a spirally wound structure inside the pipe wall profile 11, so that the inside of the pipe wall profile 11 remains hollow while providing higher structural strength to the pipe wall profile 11.

[0025] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A spiral-ribbed hollow drainage pipe, characterized in that: It includes an inner tube wall (1), an outer tube wall (2), and a spiral rib (3). The outer tube wall (2) is tightly attached to the outside of the inner tube wall (1). The inner tube wall (1) includes a hollow tube wall profile (11). The tube wall profile (11) is provided with an integrally formed insert groove (12) and a first spiral groove (13). The tube wall profile (11) extends along the cross-sectional direction and spirals around to form the inner tube wall (1). The insert groove (12) extends spirally around the outer surface of the inner tube wall (1). The outer tube wall (2) includes an outer membrane layer (21), a fiberglass layer (22), and a connecting layer. (23) The connecting layer (23) and the fiberglass layer (22) form a second spiral groove (231). The connecting layer (23) is provided with an insert head (232). The connecting layer (23) is tightly attached to the inner tube wall (1) and is embedded into the insert groove (12) through the insert head (232) to form a snap-fit. The spiral rib (3) is installed in the space formed by the first spiral groove (13) and the second spiral groove (231). The fiberglass layer (22) wraps the connecting layer (23), and the outer membrane layer (21) wraps the fiberglass layer (22).

2. The spiral-ribbed hollow drainage pipe according to claim 1, characterized in that: The spiral rib (3) is a composite spiral structure, including an outer protective layer (31), a middle composite layer (32) and an inner metal layer (33). The composite layer (32) tightly wraps the metal layer (33), and the protective layer (31) tightly wraps the composite layer (32).

3. A spiral-ribbed hollow drainage pipe according to claim 2, characterized in that: The spiral rib (3) is a solid structure that extends along the cross-sectional direction and spirals around in sequence.

4. The spiral-ribbed hollow drainage pipe according to claim 1, characterized in that: The thickness of the fiberglass layer (22) ranges from 1 to 5 mm.

5. A spiral-ribbed hollow drainage pipe according to claim 1, characterized in that: The fiberglass layer (22) is formed by fiberglass winding process.

6. A spiral-ribbed hollow drainage pipe according to claim 1, characterized in that: The pipe profile is provided with multiple reinforcing ribs (14), which are installed between the inner and outer walls of the pipe wall profile (11).

7. A spiral-ribbed hollow drainage pipe according to claim 1, characterized in that: The outer membrane layer (21) is made of polyurethane coating.

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