Butt joint plug for steel-plastic pipe

Abstract

The utility model relates to the technical field of steel-plastic pipes, in particular to a butt joint plug for a steel-plastic pipe, which comprises the steel-plastic pipe, a connecting ring is fixed on the outer wall of the steel-plastic pipe, two connecting seats are fixed on the outer wall of the connecting ring, and fixing holes are arranged at the connecting seats. The connecting part comprises a fixing seat, inner ring bodies are coaxially fixed to the front wall and the rear wall of the fixing seat, outer ring bodies are arranged outside the inner ring bodies, and the tail end of the steel-plastic pipe is inserted into gaps between the inner ring bodies and the outer ring bodies; through the arrangement of the connecting bases, the connecting parts and the like, when the two steel-plastic pipes are in butt joint, the tail ends of the two steel-plastic pipes are inserted into a gap between the inner ring body and the outer ring body, then the connecting bases on the two sides are inserted into the notches by rotating the connecting sleeves, and limiting rods are inserted into the fixing holes, so that rapid connection between the two steel-plastic pipes can be achieved; according to the design, special tools are not needed when the two steel-plastic pipes are in butt joint, and the advantages of being convenient and fast to operate and easy to install are achieved.

Description

Technical Field

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

[0002] Steel-plastic composite pipe, also known as steel-plastic pipe, is a new type of pipe made of a steel core and a plastic layer. It consists of a steel outer layer and a plastic inner layer. The steel outer layer provides robust structural support, while the plastic inner layer gives the pipe excellent corrosion resistance. Currently, steel-plastic composite pipes are widely used in construction, municipal engineering, and agriculture.

[0003] Currently, the most common methods for butt welding of steel-plastic composite pipes are double heat fusion connection and mechanical flange connection. However, both methods have certain limitations in practical applications. While double heat fusion connection ensures the strength and sealing of the connection, it requires specific heat fusion welding equipment, which not only increases the difficulty of construction but may also cause inconvenience in certain working environments. On the other hand, although mechanical flange connection offers high connection strength and is easy to disassemble and maintain, its installation process is relatively complex, requiring the installation of multiple bolts one by one. This undoubtedly prolongs the construction period and increases installation costs. Therefore, existing butt welding methods cannot meet the actual installation requirements of steel-plastic composite pipes. In view of this, we propose a butt welding plug for steel-plastic composite pipes. Utility Model Content

[0004] To solve the above problems, this utility model provides a connector for steel-plastic pipes.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A connector for steel-plastic pipe includes a steel-plastic pipe, a connecting ring fixed to the outer wall of the steel-plastic pipe, two connecting seats fixed to the outer wall of the connecting ring, and a fixing hole provided at the connecting seat;

[0007] A connecting part is provided between the two steel-plastic pipes. The connecting part includes a fixing seat. The front and rear walls of the fixing seat are coaxially fixed with an inner ring body. An outer ring body is provided outside the inner ring body. The end of the steel-plastic pipe is inserted into the gap between the inner ring body and the outer ring body. Multiple first sealing rings and second sealing rings are respectively embedded in the outer wall of the inner ring body and the inner wall of the outer ring body. The first sealing rings and second sealing rings abut against the inner and outer walls of the steel-plastic pipe respectively.

[0008] Two ear plates are fixed on the left and right sides of the outer ring body. A connecting block is rotatably installed between two adjacent ear plates. A connecting rod is fixed to the end of the connecting block. A connecting sleeve is provided at the end of the connecting rod. The connecting sleeve has a hollow structure. A fixing ring that is rotatably connected to the connecting rod is fixed at one end of the connecting sleeve. A threaded hole is opened at the other end of the connecting sleeve. A threaded rod is threadedly connected to the threaded hole. A limit seat is fixed at the end of the threaded rod. A notch is opened on the inner wall of the limit seat. A limit rod is fixed on the inner wall of the notch. The connecting seat is inserted into the notch. The limit rod is inserted into the fixing hole.

[0009] Furthermore, the outer wall of the connecting sleeve is fixed with multiple anti-slip ridges, which are distributed in a ring at equal intervals.

[0010] Furthermore, the outer wall of the connecting sleeve is provided with two strip grooves, the overall shape of which is rectangular.

[0011] Furthermore, a limiting block is coaxially fixed at one end of the threaded rod away from the limiting seat, and the limiting block is slidably connected to the inner cavity of the connecting sleeve.

[0012] Furthermore, the connecting block and the connecting rod are integrally formed structures, and both the connecting block and the connecting rod are made of stainless steel.

[0013] Furthermore, both the first and second sealing rings are O-shaped, and both are made of rubber.

[0014] Furthermore, the fixing base, inner ring body, and outer ring body are integrally formed structures, and the overall shape of the inner ring body and the outer ring body is ring-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By using the designed connecting seats and connecting parts, when connecting two steel-plastic pipes, the ends of the two steel-plastic pipes are inserted into the gap between the inner ring and the outer ring. Then, by rotating the connecting sleeve, the connecting seats on both sides are inserted into the notches, and the limiting rod is inserted into the fixing hole, thus achieving a quick connection between the two steel-plastic pipes. This design does not require professional tools when connecting two steel-plastic pipes, and has the advantages of convenient and quick operation and easy installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0019] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0020] Figure 4 This is a partial exploded structural diagram of the present invention;

[0021] In the picture:

[0022] 1. Steel-plastic composite pipe; 10. Connecting ring; 11. Connecting seat; 110. Fixing hole;

[0023] 2. Connecting part; 20. Fixing seat; 21. Inner ring body; 210. First sealing ring; 22. Outer ring body; 220. Second sealing ring; 23. Ear plate; 24. Connecting block; 25. Connecting rod; 26. Connecting sleeve; 260. Fixing ring; 261. Strip groove; 262. Threaded hole; 27. Threaded rod; 270. Limiting block; 28. Limiting seat; 280. Notch; 281. Limiting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] This embodiment provides a technical solution:

[0026] Please see Figures 1-4As shown, a steel-plastic pipe connector includes a steel-plastic pipe 1. A connecting ring 10 is fixed to the outer wall of the steel-plastic pipe 1. Two connecting seats 11 are fixed to the outer wall of the connecting ring 10, and fixing holes 110 are provided at the connecting seats 11. A connecting part 2 is provided between the two steel-plastic pipes 1. The connecting part 2 includes a fixing seat 20. An inner ring body 21 is coaxially fixed to the front and rear walls of the fixing seat 20. An outer ring body 22 is provided outside the inner ring body 21. The end of the steel-plastic pipe 1 is inserted into the gap between the inner ring body 21 and the outer ring body 22. A plurality of first sealing rings 210 and second sealing rings 220 are respectively embedded in the outer wall of the inner ring body 21 and the inner wall of the outer ring body 22. The first sealing rings 210 and the second sealing rings 220 abut against the inner and outer walls of the steel-plastic pipe 1, respectively. Two ear plates 23 are fixed on the outer wall of the ring 22 on both the left and right sides. A connecting block 24 is rotatably installed between two adjacent ear plates 23. A connecting rod 25 is fixed to the end of the connecting block 24. A connecting sleeve 26 is provided at the end of the connecting rod 25. The connecting sleeve 26 has a hollow structure. A fixing ring 260 that is rotatably connected to the connecting rod 25 is fixed at one end of the connecting sleeve 26. A threaded hole 262 is opened at the other end of the connecting sleeve 26. A threaded rod 27 is threadedly connected to the threaded hole 262. A limit seat 28 is fixed at the end of the threaded rod 27. A notch 280 is opened on the inner wall of the limit seat 28. A limit rod 281 is fixed on the inner wall of the notch 280. The connecting seat 11 is inserted into the notch 280. The limit rod 281 is inserted into the fixing hole 110.

[0027] In this embodiment, the outer wall of the connecting sleeve 26 is fixed with multiple anti-slip ridges, which are distributed in a ring at equal intervals. The anti-slip ridges enhance the friction between the connecting sleeve and the hand, effectively preventing the connecting sleeve 26 from sliding when rotating or under force.

[0028] In this embodiment, the outer wall of the connecting sleeve 26 is also provided with two strip grooves 261, the overall shape of which is rectangular. The strip grooves 261 reduce the overall weight of the connecting sleeve 26 while maintaining the strength and stability of the structure.

[0029] In this embodiment, a limiting block 270 is coaxially fixed at the end of the threaded rod 27 away from the limiting seat 28, and the limiting block 270 is slidably connected to the inner cavity of the connecting sleeve 26. This design ensures that the threaded rod 27 will not disengage from the connecting sleeve 26 when rotating, and the limiting block 270 also prevents the threaded rod 27 from rotating excessively, thereby enhancing the reliability and durability of the connection.

[0030] In this embodiment, the connecting block 24 and the connecting rod 25 are integrally formed structures, and both the connecting block 24 and the connecting rod 25 are made of stainless steel. The integral forming improves the overall strength and stability, while the choice of stainless steel also ensures the good corrosion resistance and durability of the connecting block 24 and the connecting rod 25.

[0031] In this embodiment, both the first sealing ring 210 and the second sealing ring 220 are O-shaped, and both are made of rubber. The O-shaped design provides excellent sealing performance and elastic recovery, effectively preventing fluid or gas leakage. The choice of rubber material also ensures its stability and durability under various temperatures and environments.

[0032] In this embodiment, the fixing base 20, the inner ring 21, and the outer ring 22 are integrally molded structures, and the overall shape of the inner ring 21 and the outer ring 22 is annular. The integrally molded fixing base 20, inner ring 21, and outer ring 22 have better connection strength, ensuring the stability and reliability of the fixing base 20, inner ring 21, and outer ring 22 in use, while the annular design can achieve a better sealing effect between the two steel-plastic pipes 1.

[0033] It should be added that, in this embodiment, the fixing ring 260 and the connecting sleeve 26 are tightly welded. The tight welding method ensures the reliable connection between the connecting sleeve 26 and the fixing ring 260, thereby ensuring the stability of the device in use.

[0034] In practical use, the user first inserts the ends of the two steel-plastic tubes 1 into the gaps between the corresponding inner rings 21 and outer rings 22. Then, the user flips the limiting seat 28 so that the connecting seat 11 is inserted into the notch 280. The user then rotates the connecting sleeve 26. Since the threaded rod 27 is threadedly connected to the threaded hole 262, as the connecting sleeve 26 rotates, the threaded rod 27 moves to one side and drives the limiting seat 28 to one side. The limiting seat 28 then drives the limiting rod 281 to move, and the limiting rod 281 is inserted into the fixing hole 110. When the connecting seat 11 is pressed against the end of the notch 280, the user stops rotating the connecting sleeve 26 and repeats the above steps. Multiple limiting seats 28 are installed in sequence, and the two steel-plastic tubes 1 are then connected and fixed.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A connector for steel-plastic conduit, comprising a steel-plastic conduit (1), characterized in that: A connecting ring (10) is fixed to the outer wall of the steel-plastic pipe (1). Two connecting seats (11) are fixed to the outer wall of the connecting ring (10). A fixing hole (110) is provided at the connecting seat (11). A connecting part (2) is provided between the two steel-plastic pipes (1). The connecting part (2) includes a fixing seat (20). The front and rear walls of the fixing seat (20) are coaxially fixed with an inner ring body (21). An outer ring body (22) is provided outside the inner ring body (21). The end of the steel-plastic pipe (1) is inserted into the gap between the inner ring body (21) and the outer ring body (22). Multiple first sealing rings (210) and second sealing rings (220) are respectively embedded in the outer wall of the inner ring body (21) and the inner wall of the outer ring body (22). The first sealing rings (210) and the second sealing rings (220) abut against the inner and outer walls of the steel-plastic pipe (1). Two ear plates (23) are fixed on the outer wall of the outer ring body (22) on both the left and right sides. A connecting block (24) is rotatably installed between two adjacent ear plates (23). A connecting rod (25) is fixed at the end of the connecting block (24). A connecting sleeve (26) is provided at the end of the connecting rod (25). The connecting sleeve (26) has a hollow structure. A fixing ring (260) is fixed at one end of the connecting sleeve (26) and rotatably connected to the connecting rod (25). A threaded hole (262) is opened at the other end of the connecting sleeve (26). A threaded rod (27) is threadedly connected at the threaded hole (262). A limit seat (28) is fixed at the end of the threaded rod (27). A notch (280) is opened on the inner wall of the limit seat (28). A limit rod (281) is fixed on the inner wall of the notch (280). The connecting seat (11) is inserted into the notch (280). The limit rod (281) is inserted into the fixing hole (110).

2. The butt plug for steel plastic pipe according to claim 1, characterized by: The outer wall of the connecting sleeve (26) is fixed with multiple anti-slip ridges, which are distributed in a ring at equal intervals.

3. The butt plug for steel plastic pipe according to claim 1, characterized in that: The outer wall of the connecting sleeve (26) is also provided with two strip grooves (261), and the overall shape of the strip grooves (261) is rectangular.

4. The butt plug for steel plastic pipe according to claim 1, characterized in that: The threaded rod (27) is coaxially fixed with a limiting block (270) at one end away from the limiting seat (28), and the limiting block (270) is slidably connected to the inner cavity of the connecting sleeve (26).

5. The butt plug for steel plastic pipe according to claim 1, characterized in that: The connecting block (24) and the connecting rod (25) are integrally formed structures, and both the connecting block (24) and the connecting rod (25) are made of stainless steel.

6. The butt plug for steel plastic pipe according to claim 1, characterized by: The first sealing ring (210) and the second sealing ring (220) are both O-shaped, and both the first sealing ring (210) and the second sealing ring (220) are made of rubber.

7. The butt plug for steel plastic pipe according to claim 1, characterized by: The fixed base (20), inner ring (21) and outer ring (22) are integrally formed structures, and the overall shape of the inner ring (21) and outer ring (22) is ring-shaped.

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