Drainage and ventilation pipe fitting

Abstract

The utility model provides a drainage and ventilation pipe fitting, which belongs to the technical field of pipelines and comprises an inner pipe body which is of a spiral structure and comprises a first contact part and a second contact part, one end of the second contact part is connected with one end of the first contact part, and the other end of the second contact part is connected with the other end of the second contact part. The other end of the second contact part is in contact with the other end of the first contact part; the outer pipe body is of a spiral structure, the outer pipe body is arranged on the inner pipe body in a sleeving mode, the outer pipe body comprises a covering part, and the covering part makes contact with the first contact part and the second contact part and covers the contact part of the second contact part and the first contact part. The pipe fitting has the advantages that the first contact portion and the second contact portion which are spirally distributed on the two sides of the inner pipe body make contact with each other to form the pipe body, the covering portion covers the contact portion of the second contact portion and the first contact portion, and therefore the pipe fitting is formed, and the pipe fitting is high in strength and good in sealing performance and flexibility.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipelines and relates to a drainage and ventilation pipe fitting. Background Art

[0002] PE pipe is a polyethylene plastic pipe. Due to its excellent resistance to most domestic and industrial chemicals, PE pipe is widely used in various scenarios in life.

[0003] The PE pipes produced by the existing technical solutions, especially the corrugated pipes, have low strength, tend to harden in winter, and are very easy to break, resulting in water leakage, air leakage or impurities entering the pipes, which greatly affects the use effect and has a large room for improvement. Summary of the Invention

[0004] The purpose of the utility model is to solve the above problems in the prior art and to propose a drainage and ventilation pipe.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a drainage ventilation pipe fitting, comprising:

[0006] an inner tube body having a spiral structure, the inner tube body including a first contact portion and a second contact portion, wherein one end of the second contact portion is connected to one end of the first contact portion, and the other end of the second contact portion is in contact with the other end of the first contact portion;

[0007] The outer tube body is a spiral structure, and the outer tube body is sleeved on the inner tube body. The outer tube body includes a covering portion, and the covering portion contacts the first contact portion and the second contact portion and covers the contact portion between the second contact portion and the first contact portion.

[0008] In the above-mentioned drainage and ventilation pipe, the inner tube body further includes a connecting portion, the connecting portion is located between the first contact portion and the second contact portion, and the first contact portion is connected to the second contact portion through the connecting portion.

[0009] In the above-mentioned drainage and ventilation pipe, the outer tube body also includes a first bending portion and a second bending portion, the covering portion extends and bends toward the first contact portion to form the first bending portion, and the covering portion extends and bends toward the second contact portion to form the second bending portion.

[0010] In the above drainage and ventilation pipe, the first bent portion contacts the first contact portion, and the second bent portion contacts the second contact portion.

[0011] In the above-mentioned drainage and ventilation pipe, the second contact portion is bonded to the contact portion of the first contact portion.

[0012] In the above drainage and ventilation pipe, the covering portion is bonded to a contact portion of the first contact portion, and / or the covering portion is bonded to a contact portion of the second contact portion.

[0013] In the above drainage and ventilation pipe, the first bent portion is bonded to the contact portion of the first contact portion, and the second bent portion is bonded to the contact portion of the second contact portion.

[0014] In the above-mentioned drainage and ventilation pipe, the inner pipe body is a copolymer of low-density polyethylene and EVA, and the outer pipe body is a high-density polyethylene.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The tube body is divided into two layers, an inner tube body and an outer tube body, and the first contact portion and the second contact portion on both sides of the inner tube body along its own spiral distribution contact each other to form the tube body main body, and the contact portion between the second contact portion and the first contact portion is covered by the covering portion, thereby forming the tube fitting with high strength, good sealing and flexibility.

[0017] 2. The first contact portion is connected to the second contact portion through the connecting portion, thereby extending the axial length of the tube and facilitating the fixing or connection of both sides of the covering portion, so that the outer tube body is fixed relative to the inner tube body.

[0018] 3. The covering portion extends and bends toward the first contact portion to form a first bending portion, and the covering portion extends and bends toward the second contact portion to form a second bending portion, so that the outer tube body is fixed relative to the inner tube body.

[0019] 4. The composite application of the inner tube body made of low-density polyethylene and EVA copolymer material and the outer tube body made of high-density polyethylene material reduces the production cost of the pipe fitting while ensuring the strength and flexibility of the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the pipe fitting of the present invention.

[0021] Figure 2 This is an exploded view of the pipe fitting of the present invention.

[0022] Figure 3 It is the front view of the pipe fitting of the present utility model.

[0023] Figure 4 for Figure 3 Cross-sectional view from the AA perspective.

[0024] Figure 5 for Figure 4 Magnified view of part B.

[0025] Figure 6 This is the main view of the pipe fitting of the present invention from an exploded perspective.

[0026] Figure 7 for Figure 6 Cross-sectional view from CC perspective.

[0027] In the figure, 100, inner tube body; 110, first contact portion; 120, second contact portion; 130, connecting portion; 200, outer tube body; 210, covering portion; 220, first bending portion; 230, second bending portion. DETAILED DESCRIPTION

[0028] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, terms such as "first," "second," and "an" in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0034] like Figure 1-Figure 7 As shown, a drainage and ventilation pipe fitting includes an inner pipe body 100 and an outer pipe body 200.

[0035] Among them, the inner tube body 100 is a spiral structure, and the inner tube body 100 includes a first contact part 110 and a second contact part 120, one end of the second contact part 120 is connected to one end of the first contact part 110, and the other end of the second contact part 120 contacts the other end of the first contact part 110.

[0036] Among them, the outer tube body 200 is a spiral structure, and the outer tube body 200 is sleeved on the inner tube body 100. The outer tube body 200 includes a covering portion 210, and the covering portion 210 contacts the first contact portion 110 and the second contact portion 120 and covers the contact portion between the second contact portion 120 and the first contact portion 110.

[0037] In this embodiment, the tube body is divided into two layers, namely an inner tube body 100 and an outer tube body 200, and the first contact portion 110 and the second contact portion 120 on both sides of the inner tube body 100 are in contact with each other along its own spiral distribution to form the tube body main body, and the contact portion between the second contact portion 120 and the first contact portion 110 is covered by the covering portion 210, thereby forming the tube fitting with high strength and good sealing performance.

[0038] like Figure 1-Figure 7 As shown, based on the above embodiment, the inner tube body 100 further includes a connecting portion 130 , which is located between the first contact portion 110 and the second contact portion 120 , and the first contact portion 110 is connected to the second contact portion 120 through the connecting portion 130 .

[0039] In this embodiment, the first contact portion 110 is connected to the second contact portion 120 via the connecting portion 130 , thereby extending the axial length of the tube and facilitating the fixing or connection of both sides of the covering portion 210 , thereby fixing the outer tube body 200 relative to the inner tube body 100 .

[0040] like Figure 1-Figure 7As shown, based on the above embodiment, the outer tube body 200 also includes a first bending portion 220 and a second bending portion 230, the covering portion 210 extends and bends toward the first contact portion 110 to form the first bending portion 220, and the covering portion 210 extends and bends toward the second contact portion 120 to form the second bending portion 230.

[0041] Specifically, the first bending portion 220 contacts the first contact portion 110 , and the second bending portion 230 contacts the second contact portion 120 .

[0042] In this embodiment, the covering portion 210 extends and bends toward the first contact portion 110 to form a first bent portion 220, and the covering portion 210 extends and bends toward the second contact portion 120 to form a second bent portion 230. The two sides of the covering portion 210 are positioned respectively so that the outer tube body 200 is fixed relative to the inner tube body 100.

[0043] like Figure 1-Figure 7 As shown, based on the above embodiment, the second contact portion 120 is bonded to the contact portion of the first contact portion 110 .

[0044] In this embodiment, the second contact portion 120 is bonded to the contact portion of the first contact portion 110 , thereby further improving the strength of the pipe and preventing damage thereof that may cause water leakage or impurities to enter the pipe.

[0045] like Figure 1-Figure 7 As shown, based on the above embodiment, the covering portion 210 is bonded to the contact portion of the first contact portion 110 , and / or the covering portion 210 is bonded to the contact portion of the second contact portion 120 .

[0046] In this embodiment, the covering portion 210 is bonded to the contact portion of the first contact portion 110, and / or the covering portion 210 is bonded to the contact portion of the second contact portion 120, thereby strengthening the positioning of the inner tube body 100 relative to the outer tube body 200, further improving the strength of the pipe fitting, and preventing damage thereof from causing water leakage or impurities to enter the pipe.

[0047] like Figure 1-Figure 7 As shown, based on the above embodiment, the first bending portion 220 is bonded to the contact portion of the first contact portion 110 , and the second bending portion 230 is bonded to the contact portion of the second contact portion 120 .

[0048] In this embodiment, the first bend portion 220 is bonded to the contact portion of the first contact portion 110, and the second bend portion 230 is bonded to the contact portion of the second contact portion 120, thereby strengthening the positioning of the inner tube body 100 relative to the outer tube body 200, further improving the strength of the pipe fitting, and preventing it from being damaged and causing water leakage or impurities to enter the pipe.

[0049] like Figure 1-Figure 7 As shown, based on the above embodiment, the inner tube body 100 is a copolymer of low-density polyethylene and EVA, and the outer tube body 200 is a high-density polyethylene.

[0050] In this embodiment, the inner tube body 100 made of high-density polyethylene and the outer tube body 200 made of high-density polyethylene are combined to reduce the production cost of the pipe while ensuring the strength and flexibility of the pipe.

Claims

1. A drainage ventilation pipe, characterized in that: include: an inner tube body having a spiral structure, the inner tube body including a first contact portion and a second contact portion, wherein one end of the second contact portion is connected to one end of the first contact portion, and the other end of the second contact portion is in contact with the other end of the first contact portion; The outer tube body is a spiral structure, and the outer tube body is sleeved on the inner tube body. The outer tube body includes a covering portion, and the covering portion contacts the first contact portion and the second contact portion and covers the contact portion between the second contact portion and the first contact portion.

2. A drainage and ventilation pipe according to claim 1, characterized in that: The inner tube body further includes a connecting portion, the connecting portion is located between the first contact portion and the second contact portion, and the first contact portion is connected to the second contact portion through the connecting portion.

3. The drainage and ventilation pipe according to claim 1, characterized in that: The outer tube body further includes a first bending portion and a second bending portion. The covering portion extends and bends toward the first contact portion to form the first bending portion. The covering portion extends and bends toward the second contact portion to form the second bending portion.

4. A drainage and ventilation pipe according to claim 3, characterized in that: The first bent portion contacts the first contact portion, and the second bent portion contacts the second contact portion.

5. The drainage and ventilation pipe according to claim 1, characterized in that: The second contact portion is bonded to a contact portion of the first contact portion.

6. The drainage and ventilation pipe according to claim 1, characterized in that: The covering portion is bonded to a contact portion of the first contact portion, and / or the covering portion is bonded to a contact portion of the second contact portion.

7. The drainage and ventilation pipe according to claim 4, characterized in that: The first bent portion is bonded to a contact portion of the first contact portion, and the second bent portion is bonded to a contact portion of the second contact portion.

8. The drainage and ventilation pipe according to claim 1, characterized in that: The inner tube body is a copolymer of low-density polyethylene and EVA, and the outer tube body is a high-density polyethylene.

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