Novel straight-through type electric melting pipe fitting structure

By optimizing the structural design of electrofusion fittings, using S-shaped resistance wires and peelable anti-oxidation layers, the problems of uneven heating and complicated installation were solved, achieving uniform heating and simplified installation, and improving welding quality and connection stability.

CN223708973UActive Publication Date: 2025-12-23YUYAO DONGPU PIPE IND CO LTD
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Patent Information

Application Number
CN202520571091.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-28
Publication Date
2025-12-23
Estimated Expiration
2035-03-28

AI Technical Summary

Technical Problem

The improper arrangement of internal resistance wires in traditional straight-through electrofusion fittings leads to uneven heating, unstable welding quality, and a cumbersome and time-consuming installation process.

Method used

The device uses a hollow tubular body wrapped with a peelable anti-oxidation layer. Inside, S-shaped resistance wires are arranged vertically along the outer perimeter of the body. The anti-oxidation layer has equally spaced ring-shaped peelable lines and peelable starting lines. The outer surface has evenly distributed protrusions to optimize the arrangement and installation process of the resistance wires.

Benefits of technology

It achieves uniform heating of electrofusion fittings, improves welding quality, simplifies the installation process, reduces labor costs and time, and enhances the strength and sealing of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a novel straight-through type electric melting pipe fitting structure which comprises a hollow tubular main body, a strippable anti-oxidation layer is wrapped on the outer surface of the main body, and an s-shaped resistance wire is vertically arranged in the main body along the outer circumference of the main body. According to the utility model, the sealing performance of the connection between the pipe fitting and the pipe is improved, the heating uniformity is ensured, the welding quality is improved, the installation difficulty is reduced, and the installation efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the electric melting pipe technical field more specifically relates to a novel straight-through electric melting pipe structure. BACKGROUND

[0002] In pipe fitting connection, electric melting connection is a commonly used connection mode, and straight-through electric melting pipe fittings play an important role in the pipeline system. They convert electric energy into heat energy through electric heating elements, thereby realizing the fusion of pipe fittings and pipe materials or pipe fitting socket ends. However, the traditional straight-through electric melting pipe fittings have some problems, such as the unreasonable arrangement of the electric melting pipe fittings inside the resistance wire, which leads to uneven heating and unstable welding quality. When connecting, the internal distance of the connecting pipe needs to be measured, and then the straight-through electric melting pipe fittings need to be polished, which is a complicated process. SUMMARY

[0003] The utility model provides a novel straight-through electric melting pipe structure to solve the problems in the prior art.

[0004] To achieve the above purpose, the utility model embodiment provides a novel straight-through electric melting pipe structure, which comprises: a hollow tubular body, the outer surface of the body is wrapped with a peelable oxidation-resistant layer, and an s-shaped resistance wire is vertically arranged along the outer circumference of the body inside the body.

[0005] Preferably, a plurality of annular peelable lines are arranged on the oxidation-resistant layer along the outer circumference of the body, and the peelable lines are distributed at equal distances.

[0006] Preferably, the width between the peelable lines is 2CM.

[0007] Preferably, the annular peelable line is provided with a peelable starting line, and the oxidation-resistant layer can be peeled off from the body along the peelable line through the peelable starting line.

[0008] Preferably, a plurality of protrusions are uniformly distributed on the outer surface of the body, and the protrusions can better connect the body after being heated and melted.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The s-shaped resistance wire arranged inside the electric melting pipe fitting is reasonable, so that the pipe fitting can be uniformly heated when electrified, ensuring the welding quality and reducing the occurrence of welding defects.

[0011] The design of the peelable oxidation-resistant layer on the straight-through electric melting pipe fitting provides accurate installation reference for installers, reduces the installation difficulty, improves the installation efficiency, saves the installation time and labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0013] Fig. 1 The drawing is a structural schematic diagram of the present application.

[0014] Fig. 2 The drawing is a structural schematic diagram of the present application.

[0015] Reference signs: 1, main body; 2, oxidation-proof layer; 3, resistance wire; 4, strippable wire; 5, strippable starting wire. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of those skilled in the art, the following will be explained in words and drawings to illustrate the multiple embodiments of the present application. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details of the present application should not be limited. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the convenience of understanding, some conventional structures and components will be drawn in a simple schematic manner in the drawings.

[0017] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0019] In this patent, unless otherwise expressly provided and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this patent can be understood according to the specific circumstances.

[0020] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope of this patent.

[0021] Please refer to the attached Figs. 1-2 The utility model discloses a novel straight-through type electrically fused pipe fitting structure, hollow tubular main body 1, the outer surface of main body 1 is wrapped with the peelable anti -oxidation layer 2, the inside vertical of main body 1 along the perimeter of main body 1 is equipped with s resistance wire 3.

[0022] The hollow tubular main body 1 provides a channel for pipe connection, meeting the basic functional requirements of the pipe fitting. The peelable anti-oxidation layer 2 wrapped on the outer surface can effectively protect the main body 1 from oxidation corrosion before storage, transportation and installation, prolong the service life of the pipe fitting, ensure the stability of the main body 1 material performance, and further ensure the reliability of the pipe fitting in subsequent use. The s-shaped resistance wire 3 arranged vertically along the outer circumference of the main body 1 can produce more uniform and efficient heat distribution when energized compared to the traditional arrangement of resistance wire 3. Due to the s-shaped structure, the contact area and path of the resistance wire 3 with the main body 1 are increased, making the heating of each part of the main body 1 more uniform, thereby improving the welding quality and ensuring the firmness and sealing of the pipe fitting and pipe connection.

[0023] In order to further optimize the above technical solution, a plurality of annular peelable lines 4 are arranged on the anti-oxidation layer 2 along the outer circumference of the main body 1, and the peelable lines 4 are distributed at equal distances.

[0024] The plurality of annular peelable lines 4 arranged on the anti-oxidation layer 2 along the outer circumference of the main body 1 and distributed at equal distances provide clear peeling guidance for the operator. During installation, the anti-oxidation layer 2 can be peeled off gradually along the peelable lines 4 according to actual needs, which is convenient and accurate to operate. This design avoids unnecessary damage to the main body 1 during peeling, and the equal distance distribution allows flexible control of the peeling length of the anti-oxidation layer 2 in different installation scenarios, improving the adaptability of installation.

[0025] In order to further optimize the above technical solution, the width of the peelable line 4 is 2CM.

[0026] The width between the peelable lines 4 is set to 2CM, which is a reasonable distance verified by practice. The width will not cause peeling difficulty due to being too narrow, nor will it affect the protection effect of the oxidation-proof layer on the main body due to being too wide. The width of 2CM facilitates the operator to use tools (such as a knife) along the peelable line during the peeling process, ensuring the smoothness and efficiency of the peeling process.

[0027] In order to further optimize the above technical solution, the annular peelable line 4 is provided with a peelable starting line 5, through which the oxidation-proof layer 2 can be peeled from the main body 1 along the peelable line 4.

[0028] The annular peelable line 4 is provided with a peelable starting line 5, which greatly simplifies the peeling operation of the oxidation-proof layer 2. The operator does not need to find the peeling starting point by himself, but only needs to start from the peelable starting line 5 to smoothly peel the oxidation-proof layer 2 from the main body 1 along the peelable line 4. This design reduces the operation difficulty and improves the installation efficiency, especially in large-scale installation operation, which can significantly save time and labor cost.

[0029] In order to further optimize the above technical solution, the outer surface of the main body 1 is also uniformly distributed with a plurality of protrusions, which can better connect the main body 1 after being heated and melted.

[0030] The plurality of protrusions uniformly distributed on the outer surface of the main body 1 will melt first during the heating process. These melted protrusions can fill the small gaps between the main body 1 and the pipe, increase the contact area and bonding force between the two. After the main body 1 and the pipe are welded and cooled, the protrusion part is solidified, further enhancing the firmness of the connection, making the connection between the main body 1 and the pipe more tight, effectively preventing the leakage phenomenon, and improving the sealing and stability of the entire pipeline system.

[0031] In use, first check whether the appearance of the pipe fitting is intact, and confirm that the oxidation-proof layer 2 is not damaged. According to the installation requirements, select the pipe fitting with the appropriate pipe diameter. Measure the distance inside the pipe fitting, find the peelable starting line 5 on the annular peelable line 4 according to the value, use a knife or other tools to gently cut along the peelable starting line 5, and then peel the oxidation-proof layer 2 along the peelable line 4 according to the measured data. According to the length requirement of the actual connected pipe, the peelable line 4 is evenly distributed, which can accurately control the peeling length.

[0032] After the oxidation layer 2 is peeled off, the main body 1 is exposed, and the main body 1 is inserted into both ends of the pipe material to be connected, ensuring that the insertion depth is appropriate. After the main body 1 is inserted, the resistance wire 3 inside the main body 1 is connected to the power supply, and after the power supply is turned on, the resistance wire 3 is electrified and heated, heating the pipe main body 1. Due to the uniform heating characteristics of the s-shaped resistance wire, the main body 1 is uniformly heated, and the protrusions on the outer surface begin to melt. As the heating continues, the connection part of the main body 1 and the pipe material gradually melts. After the resistance wire 3 stops heating, the main body 1 and the pipe material are kept in a connected state, and they are naturally cooled. During the cooling process, the melted protrusions and the melted part of the main body 1 and the pipe material solidify, forming a firm connection.

[0033] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant part can be referred to the method part.

[0034] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel through-penetration electrofusion fitting structure, characterized by, The utility model relates to a kind of hollow tubular body (1), the outer surface of body (1) is wrapped with peelable oxidation-proof layer (2), and s-shaped resistance wire (3) is vertically arranged in the inside of body (1) along the outer perimeter of body (1). A plurality of annular peelable lines (4) are arranged on the oxidation-proof layer (2) along the outer perimeter of the body (1), and the peelable lines (4) are distributed equidistantly.

2. The novel through-penetration electrically fused pipe joint structure according to claim 1, characterized by, The width between the peelable lines (4) is 2 cm.

3. The novel through-penetration electrically fused pipe coupling structure according to claim 2, wherein, The annular peelable lines (4) are provided with a peelable starting line (5), by which the oxidation-proof layer (2) can be peeled off from the body (1) along the peelable lines (4).

4. The novel through-penetration electrically fused pipe coupling structure according to claim 2, wherein, The outer surface of the body (1) is also uniformly distributed with a plurality of protrusions, which can better connect the body (1) after being heated and melted.

5. The novel through-penetration electrically fused pipe coupling structure according to claim 1, wherein, ​