Lengthened PPH pipe fitting capable of being welded for multiple times
By designing extended PPH pipe fittings that can be welded multiple times, the problem of resource waste caused by welding errors in PPH pipe connectors has been solved, enabling multiple uses and cost reduction, while improving the stability and sealing of the connection.
Patent Information
- Application Number
- CN202423182933.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-23
AI Technical Summary
When existing PPH pipe fittings are used incorrectly or require readjustment, the end of the PPH pipe along with the fitting must be cut off, resulting in resource waste and increased costs.
An extended PPH pipe fitting designed for multiple welding is presented, comprising a fixed sleeve and a welding sleeve. It achieves multiple uses through a movable connection and a beveled sealing structure, and improves connection stability and sealing performance through a limiting sleeve and anti-slip texture.
This enables PPH pipe fittings to be used multiple times, reducing material waste and costs, improving connection stability and sealing, and avoiding resource waste.
Smart Images
Figure CN223550063U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PPH pipe fittings technology, and in particular to an extended PPH pipe fitting that can be welded multiple times. Background Technology
[0002] PPH pipe is a high-quality product made by β-modifying ordinary PP material to give it a uniform and delicate Beta crystal structure. It has excellent chemical corrosion resistance, wear resistance, high temperature resistance, corrosion resistance, aging resistance and good insulation.
[0003] PPH pipes are mainly used in pipeline transportation in chemical plants. When laying PPH pipes, adjacent pipes need to be connected using pipe fittings. The connection between the PPH pipe fitting and the PPH pipe is usually achieved through hot-melt welding. Because the PPH pipe fitting is manufactured in one piece and has a simple structure, when a welding error occurs or readjustment is needed, the end of the PPH pipe, along with the PPH pipe fitting, must be cut off, rendering the fitting unusable and resulting in resource waste and cost expenditure. Therefore, there is an urgent need for an extended PPH pipe fitting that can be welded multiple times to solve the above problems. Utility Model Content
[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.
[0005] Specifically, the technical problem to be solved by this utility model is to provide an extended PPH pipe fitting that can be welded multiple times, so as to solve the current technical problem that when a welding error occurs or readjustment is required, the end of the PPH pipe and the PPG pipe connector must be cut off directly, resulting in the PPH pipe connector being scrapped and unusable.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:
[0007] An extended PPH pipe fitting for repeated welding includes a fixed sleeve with welding sleeves at both ends. A positioning ring is fixed inside the welding sleeve, and the positioning ring abuts against the port of the fixed sleeve. The welding sleeve and the positioning ring cooperate to form a welding cavity and a connecting cavity. A threaded groove is opened in the connecting cavity, and an external thread adapted to the threaded groove is fixed at the end of the fixed sleeve.
[0008] As an improved technical solution, a first inclined surface is provided at the port of the fixed sleeve, and a second inclined surface is provided on the side of the positioning ring facing the fixed sleeve.
[0009] As an improved technical solution, a sealing ring is provided between the first inclined surface and the second inclined surface.
[0010] As an improved technical solution, the outer side of the fixed sleeve is provided with a first anti-slip texture, and the outer side of the welded sleeve is provided with a second anti-slip texture.
[0011] As an improved technical solution, both ends of the fixed sleeve are fixedly connected to limit cylinders, and the limit cylinders are provided with limit cavities, which abut against the welding sleeve.
[0012] As an improved technical solution, the limiting cavity has a frustum-shaped structure.
[0013] After adopting the above technical solution, the beneficial effects of this utility model are:
[0014] 1. This utility model uses a movable connection between a fixed sleeve and a welding sleeve, which allows the welding sleeve to be directly rotated off when welding adjustments are needed, and a new welding sleeve to be replaced for continued use. This allows the device to be used multiple times and can effectively reduce material damage and cost expenditure, making it highly practical.
[0015] 2. This utility model increases the sealing surface area between the welding sleeve and the fixed sleeve by using the first inclined surface and the second inclined surface together, thereby ensuring the sealing performance of the connection. At the same time, the limiting sleeve abuts and limits the welding sleeve, improving the connection stability between the welding sleeve and the fixed sleeve. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0017] Figure 1 This is a schematic diagram of the overall structure of the extended PPH pipe fitting that can be welded multiple times according to this utility model.
[0018] Figure 2 This is a schematic diagram of the fixing sleeve structure of the extended PPH pipe fitting that can be welded multiple times according to this utility model.
[0019] Figure 3 This is a cross-sectional schematic diagram of the welding sleeve structure of the extended PPH pipe fitting that can be welded multiple times according to this utility model.
[0020] Figure 4 This is a cross-sectional schematic diagram of the limiting cylinder structure of the extended PPH pipe fitting that can be welded multiple times according to this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Fixed sleeve; 101. External thread; 102. First inclined surface; 103. First anti-slip texture; 2. Welded sleeve; 201. Welding cavity; 202. Connecting cavity; 203. Threaded groove; 204. Second anti-slip texture; 3. Positioning ring; 301. Second inclined surface; 4. Sealing ring; 5. Limiting sleeve; 501. Limiting cavity. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are 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 indicator will also change accordingly.
[0025] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.
[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0027] like Figure 1-4 As shown in the figure, this embodiment provides an extended PPH pipe fitting that can be welded multiple times. This extended PPH pipe fitting that can be welded multiple times includes a fixed sleeve 1, and welding sleeves 2 are provided at both ends of the fixed sleeve 1. A positioning ring 3 is fixedly provided inside the welding sleeve 2. The positioning ring 3 abuts against the end of the fixed sleeve 1. The welding sleeve 2 and the positioning ring 3 cooperate to form a welding cavity 201 and a connecting cavity 202. A threaded groove 203 is provided in the connecting cavity 202. An external thread 101 adapted to the threaded groove 203 is fixedly provided at the end of the fixed sleeve 1.
[0028] In the above technical solution, the welding cavity 201 and the end of the PPH pipe can be welded together after being heated and melted. The external thread 101 and the thread groove 203 are used to make the welding sleeve 2 and the fixed sleeve 1 movable. When re-welding is required, the welding sleeve 2 connected to the PPH pipe can be rotated off the fixed sleeve 1 and a new fixed sleeve 2 can be replaced, realizing the multiple use of this device and reducing material consumption.
[0029] It is understandable that the inner diameter of the welding cavity 201 of the welding sleeve 2 is compatible with the outer diameter of the PPH pipe, and the welding sleeve 2 can be selected to match the PPH pipe of similar size. This allows the device to expand its applicability, reduce the number of spare pipes of different sizes, and further reduce the cost of use.
[0030] A first inclined surface 102 is provided at the end of the fixed sleeve 1, and a second inclined surface 301 is provided on the side of the positioning ring 3 facing the fixed sleeve 1.
[0031] In the above technical solution, the first inclined surface 102 and the second inclined surface 301 cooperate to increase the connection surface area between the positioning ring 3 and the port of the fixed sleeve 1, thereby helping to improve the sealing performance during connection and reduce the possibility of leakage during later use.
[0032] A sealing ring 4 is provided between the first inclined surface 102 and the second inclined surface 301.
[0033] In the above technical solution, the sealing ring 4 is made of deformable rubber material. By placing the sealing ring 4 between the first inclined surface 102 and the second inclined surface 301, the sealing performance during connection can be further improved.
[0034] The outer side of the fixed sleeve 1 is provided with a first anti-slip texture 103, and the outer side of the welded sleeve 2 is provided with a second anti-slip texture 204.
[0035] In the above technical solution, by setting the first anti-slip texture 103 and the second anti-slip texture 204, the friction between the personnel's hands and the fixed sleeve 1 or the welding sleeve 2 can be increased when the fixed sleeve 1 and the welding sleeve 2 are connected or disassembled, thereby improving the operational stability.
[0036] Both ends of the fixed sleeve 1 are fixedly connected to the limiting sleeve 5. The limiting sleeve 5 is provided with a limiting cavity 501, which abuts against the welding sleeve 2.
[0037] In the above technical solution, when the welding sleeve 2 is rotated and connected to the fixed sleeve 1, the end of the welding sleeve 2 facing the limiting cylinder 5 gradually comes into close contact with the limiting cavity 501, which increases the rotational damping and thus makes the welding sleeve 2 and the fixed sleeve 1 stably connected, preventing the connection from loosening.
[0038] The limiting cavity 501 has a frustum-shaped structure.
[0039] In the above technical solution, the inner diameter of the small end of the limiting cavity 501 is smaller than the outer diameter of the welding sleeve 2. When the welding sleeve 2 moves onto the fixed sleeve 1, it enters from the large end of the limiting cavity 501 and gradually comes into close contact with the small end, so that the welding sleeve 2 and the limiting sleeve 5 are tightly connected.
[0040] In use, a welding sleeve 2 that matches the size of the PPH pipe is selected and rotated and fixedly connected to the fixed sleeve 1 through the threaded groove 203 and the external thread 101. The first inclined surface 102 and the second inclined surface 301 are in close contact with the sealing ring 4. At the same time, the welding sleeve 2 and the limiting cavity 501 are in close contact, so that the welding sleeve 2 and the fixed sleeve 1 are stably connected and sealed. After heating the end of the PPH pipe through the welding cavity 201, the PPH pipe is inserted and welded to achieve the connection between the PPH pipe and this device.
[0041] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.
Claims
1. An extended PPH pipe fitting that can be welded multiple times, characterized in that: The device includes a fixed sleeve (1), with welding sleeves (2) at both ends. A positioning ring (3) is fixed inside the welding sleeve (2). The positioning ring (3) abuts against the port of the fixed sleeve (1). The welding sleeve (2) and the positioning ring (3) cooperate to form a welding cavity (201) and a connecting cavity (202). A threaded groove (203) is opened in the connecting cavity (202). An external thread (101) that matches the threaded groove (203) is fixed at the end of the fixed sleeve (1).
2. The extended PPH pipe fitting for repeated welding according to claim 1, characterized in that: The fixed sleeve (1) has a first inclined surface (102) at the port, and the positioning ring (3) has a second inclined surface (301) on the side facing the fixed sleeve (1).
3. The extended PPH pipe fitting for repeated welding according to claim 2, characterized in that: A sealing ring (4) is provided between the first inclined surface (102) and the second inclined surface (301).
4. The extended PPH pipe fitting for repeated welding according to claim 1, characterized in that: The outer side of the fixed sleeve (1) is provided with a first anti-slip texture (103), and the outer side of the welding sleeve (2) is provided with a second anti-slip texture (204).
5. The extended PPH pipe fitting for repeated welding according to claim 1, characterized in that: Both ends of the fixed sleeve (1) are fixedly connected to the limiting sleeve (5), and the limiting sleeve (5) is provided with a limiting cavity (501), which abuts against the welding sleeve (2).
6. The extended PPH pipe fitting for repeated welding according to claim 5, characterized in that: The limiting cavity (501) has a frustum-shaped structure.