Plastic coupling for pipes

Abstract

The utility model discloses a kind of plastic connecting pieces for pipe, it is related to plastic connecting piece field, the utility model includes plastic connecting pipe, both ends of plastic connecting pipe are fixed with internal thread head, and the outer wall of plastic connecting pipe and internal thread head is equipped with anti-skid boss ring.The utility model is provided with upper sheath and lower sheath, so as to shield and protect plastic connecting pipe and internal thread head, while when plastic connecting pipe is impacted by outside, upper sheath and lower sheath will be impacted first and be deformed, so as to play the role of buffer, avoid plastic connecting pipe to be directly impacted and appear damage, and when upper sheath and lower sheath need to be disassembled and replaced, staff can first take down clamp, then upper sheath and lower sheath can be taken out, so that upper sheath and lower sheath can be replaced, by the way, sheath can also be taken out without separating plastic connecting pipe and external pipe, thereby reduce the disassembly frequency of plastic connecting pipe and pipe.

Description

Technical Field

[0001] This utility model relates to the field of plastic connectors, specifically a plastic connector for pipes. Background Technology

[0002] Plastic pipe fittings are components used to connect plastic pipes (such as PP-R, PE, PVC, PB, etc.). Through specific processes (hot melting, threading, crimping, etc.), they achieve functions such as sealing, turning, branching, or diameter changing of the pipeline system. They are widely used in building water supply and drainage, municipal engineering, industrial pipelines, agricultural irrigation and other fields.

[0003] Existing plastic pipe fittings often incorporate reinforcing ribs on their outer walls to enhance impact resistance. However, these fittings still withstand significant impact forces, potentially leading to cracks or damage. Other fittings feature protective sleeves made of rubber. These sleeves deform and compress upon impact, acting as a buffer to reduce the impact force and protect the plastic fitting. However, these protective sleeves age over time, necessitating replacement. The protective sleeve is directly fitted onto the plastic connector, which means that the plastic connector must be separated from the pipe before the protective sleeve can be removed. After installing the new protective sleeve, the pipe must be reconnected to the plastic connector, which is a cumbersome process. In addition, the valve on the pipe must be closed to prevent fluid flow before the protective sleeve can be removed. Furthermore, if the plastic connector and pipe need to be frequently disassembled to remove the protective sleeve, it will accelerate the wear of the threads of the plastic connector and the pipe, thereby reducing the service life of the plastic connector and reducing the effectiveness of the protective sleeve replacement. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a plastic connector for pipes to solve the technical problem of inconvenience in disassembling and replacing protective sleeves.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic connector for pipes, comprising a plastic connector, both ends of which are fixed with internal thread heads, the outer walls of the plastic connector and the internal thread heads are provided with anti-slip protruding rings, and the outer walls of the plastic connector and the internal thread heads are also fitted with an upper sheath and a lower sheath, the outer walls of the upper sheath and the lower sheath are fitted with clamps.

[0006] By adopting the above technical solution, the clamp can improve the stability of the upper and lower sheaths on the plastic connecting pipe and prevent the upper and lower sheaths from moving at will.

[0007] Furthermore, the top of the lower sheath has a slot, and the bottom of the upper sheath has an insert strip, which is located inside the slot and is adapted to the slot.

[0008] By adopting the above technical solution, when assembling the upper and lower sheaths, the insert can be inserted into the slot to position the upper sheath.

[0009] Furthermore, there are three clamps, two of which are respectively clamped on the outside of the two internal thread heads, and the other clamp is clamped on the outside of the plastic connecting pipe.

[0010] By adopting the above technical solution, the clamps can be used to tighten the upper and lower sheaths, thereby improving the stability of the upper and lower sheaths.

[0011] Furthermore, the outer wall of the anti-slip convex ring is tightly fitted with the inner walls of the upper and lower protective sleeves.

[0012] By adopting the above technical solution, the stability of the upper and lower sheaths can be improved, preventing them from moving arbitrarily.

[0013] Furthermore, the plastic connecting pipe, the internal threaded head, and the anti-slip convex ring are all made of PP-R (random copolymer polypropylene) material.

[0014] By adopting the above technical solution, the plastic connecting pipe made of PP-R (random copolymer polypropylene) has the properties of material saving, environmental protection, lightweight and high strength, and corrosion resistance.

[0015] Furthermore, the inner wall of the internally threaded head is provided with an inner sealing ring, which is made of EPDM material.

[0016] By adopting the above technical solution, the setting of the inner sealing ring can improve the sealing performance between the internal thread head and the pipe.

[0017] Furthermore, the bottom of the upper sheath and the top of the lower sheath are fitted together, and the size of the upper sheath is the same as that of the lower sheath.

[0018] By adopting the above technical solution, the upper and lower sheaths can be assembled, thereby protecting the plastic connecting pipe.

[0019] Furthermore, both the upper and lower sheaths are made of EPDM material.

[0020] By adopting the above technical solutions, the upper and lower sheaths are made to have aging resistance properties such as ozone resistance, heat resistance, and weather resistance.

[0021] Furthermore, the upper and lower sheaths are detachably connected to the plastic connecting tube.

[0022] By adopting the above technical solution, the upper and lower protective sleeves can be easily disassembled and replaced.

[0023] In summary, the present invention has the following main advantages: 1. This utility model features an upper and lower protective sleeve to shield and protect the plastic connecting pipe and the internal threaded head. When the plastic connecting pipe is subjected to external impact, the upper and lower protective sleeves are impacted and deformed first, thus buffering the impact force and preventing direct damage to the plastic connecting pipe, thereby extending its service life. Additionally, a clamp is provided. When the upper and lower protective sleeves need to be removed and replaced, the clamp can be removed first, and then the upper and lower protective sleeves can be taken out for replacement. This method allows for removal of the protective sleeves without separating the plastic connecting pipe from the external fittings, reducing the frequency of disassembly of the plastic connecting pipe and fittings, slowing down the wear rate of the threads inside the internal threaded head, and extending its service life. 2. By providing anti-slip protrusions, this utility model ensures that when the upper and lower protective sleeves are installed, the anti-slip protrusions will fit tightly against the inner walls of the upper and lower protective sleeves, thereby improving the stability of the upper and lower protective sleeves and preventing them from moving arbitrarily. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall exploded structure of this utility model; Figure 3 This is a schematic diagram of the overall orthographic structure of this utility model; Figure 4 This is a schematic diagram of the lower sheath structure of this utility model; Figure 5 This is a bottom view of the upper sheath structure of this utility model.

[0025] In the diagram: 1. Plastic connecting pipe; 2. Internal threaded head; 3. Upper sheath; 4. Anti-slip convex ring; 5. Clamp; 6. Lower sheath; 7. Insert; 8. Slot; 9. Inner sealing ring. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The embodiments of this utility model will be described below based on its overall structure.

[0028] Example 1:

[0029] A type of plastic connector for pipes, such as Figures 1-5 As shown, the device includes a plastic connecting pipe 1, with internally threaded heads 2 fixed at both ends. Anti-slip protruding rings 4 are provided on the outer walls of the plastic connecting pipe 1 and the internally threaded heads 2. The outer walls of the anti-slip protruding rings 4 are tightly fitted to the inner walls of the upper sheath 3 and the lower sheath 6, improving the stability of the upper sheath 3 and the lower sheath 6 and preventing them from moving freely. The outer walls of the plastic connecting pipe 1 and the internally threaded heads 2 are also fitted with upper sheath 3 and lower sheath 6. Clamps 5 are secured to the outer walls of the upper sheath 3 and the lower sheath 6, improving their stability on the plastic connecting pipe 1 and preventing them from moving freely.

[0030] Specifically, the lower sheath 6 has a slot 8 at its top, and the upper sheath 3 has a strip 7 installed at its bottom. The strip 7 is located inside the slot 8 and is compatible with the slot 8. The strip 7 is made of EPDM material. When assembling the upper sheath 3 and the lower sheath 6, the strip 7 can be inserted into the slot 8 to position the upper sheath 3. There are three clamps 5. Two clamps 5 are respectively clamped on the outside of the two internal thread heads 2, and the other clamp 5 is clamped on the outside of the plastic connecting tube 1 so that the clamps 5 can tighten the upper sheath 3 and the lower sheath 6, thereby improving the stability of the upper sheath 3 and the lower sheath 6.

[0031] See Figures 1-5 The bottom of the upper sheath 3 and the top of the lower sheath 6 are fitted together. The size of the upper sheath 3 is the same as that of the lower sheath 6, so that the upper sheath 3 and the lower sheath 6 can be assembled. This allows the upper sheath 3 and the lower sheath 6 to protect the plastic connecting pipe 1. Both the upper sheath 3 and the lower sheath 6 are made of EPDM material, which gives them ozone resistance, heat resistance, weather resistance and other aging resistance properties. The upper sheath 3 and the lower sheath 6 can be disassembled and connected to the plastic connecting pipe 1, making it easy to disassemble the upper sheath 3 and the lower sheath 6, so that the upper sheath 3 and the lower sheath 6 can be replaced.

[0032] Example 2:

[0033] Based on the above embodiment 1, in order to improve the corrosion resistance of the plastic connecting pipe 1, the following materials will be used to make the plastic connecting pipe 1.

[0034] Specifically, the plastic connecting pipe 1, the internal thread head 2, and the anti-slip convex ring 4 are all made of PP-R (random copolymer polypropylene) material. The plastic connecting pipe 1 made of PP-R (random copolymer polypropylene) has the properties of material saving, environmental protection, light weight and high strength, and corrosion resistance.

[0035] Example 3:

[0036] Based on the above embodiment one, in order to improve the sealing performance between the internal thread head 2 and the pipe, the following structure will be provided. See Figures 2-3 The inner wall of the internal thread head 2 is provided with an inner sealing ring 9, which is made of EPDM material. The inner sealing ring 9 can improve the sealing between the internal thread head 2 and the pipe.

[0037] The working principle of this utility model is as follows: First, in use, the upper sheath 3 and the lower sheath 6 can be fitted onto the outer wall of the plastic connecting pipe 1, and the insert 7 can be inserted into the slot 8. Then, the clamp 5 is clamped between the upper sheath 3 and the lower sheath 6, and the outer wall of the anti-slip protrusion 4 is tightly fitted with the inner wall of the upper sheath 3 and the lower sheath 6. In this way, the installation of the upper sheath 3 and the lower sheath 6 can be completed. Then, the outer pipe can be connected to the internal thread head 2. When the plastic connecting pipe 1 is subjected to external impact, the upper sheath 3 and the lower sheath 6 will be impacted first and deformed, thereby buffering the impact force and playing a buffering role, thus protecting the plastic connecting pipe 1. When it is necessary to disassemble the upper sheath 3 and the lower sheath 6 and replace them, the operator can first remove the clamp 5, and then separate the upper sheath 3 and the lower sheath 6. Then, the upper sheath 3 and the lower sheath 6 can be taken out in turn so that the upper sheath 3 and the lower sheath 6 can be replaced.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A plastic connector for pipes, comprising a plastic connecting pipe (1), characterized in that: Both ends of the plastic connecting pipe (1) are fixed with internal thread heads (2). The outer walls of the plastic connecting pipe (1) and the internal thread heads (2) are provided with anti-slip protrusions (4). The outer walls of the plastic connecting pipe (1) and the internal thread heads (2) are also fitted with upper sheaths (3) and lower sheaths (6). The outer walls of the upper sheaths (3) and the lower sheaths (6) are fitted with clamps (5).

2. The plastic connector for pipes according to claim 1, characterized in that: The lower sheath (6) has a slot (8) at its top, and the upper sheath (3) has a strip (7) installed at its bottom. The strip (7) is located inside the slot (8) and is adapted to the slot (8).

3. A plastic connector for pipes according to claim 1, characterized in that: The clamps (5) are provided in three parts. Two of the clamps (5) are respectively clamped on the outside of the two internal thread heads (2), and the other clamp (5) is clamped on the outside of the plastic connecting pipe (1).

4. A plastic connector for pipes according to claim 1, characterized in that: The outer wall of the anti-slip protrusion (4) is closely fitted with the inner walls of the upper sheath (3) and the lower sheath (6).

5. A plastic connector for pipes according to claim 1, characterized in that: The plastic connecting pipe (1), the internal thread head (2), and the anti-slip convex ring (4) are all made of PP-R material.

6. A plastic connector for pipes according to claim 1, characterized in that: The inner wall of the internal thread head (2) is provided with an inner sealing ring (9), which is made of EPDM material.

7. A plastic connector for pipes according to claim 1, characterized in that: The bottom of the upper sheath (3) and the top of the lower sheath (6) are fitted together, and the size of the upper sheath (3) is the same as that of the lower sheath (6).

8. A plastic connector for pipes according to claim 1, characterized in that: Both the upper sheath (3) and the lower sheath (6) are made of EPDM material.

9. A plastic connector for pipes according to claim 1, characterized in that: The upper sheath (3) and lower sheath (6) are detached from the plastic connecting pipe (1).

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