Buried modified high-density polyethylene double-wall corrugated pipe

Abstract

The buried modified high-density polyethylene double-wall corrugated pipe comprises a corrugated pipe body, combined threads are arranged at the right end of the corrugated pipe body, a rapid combined connecting structure is arranged at the left end of the corrugated pipe body, and an adjusting clamping structure is arranged at the right end of the corrugated pipe body; the rapid combination connecting structure comprises an embedding groove, a rotary combination sleeve, a sealing inserting pipe, a sealing rubber ring and a combination internal thread. The double-wall corrugated pipe relates to the technical field of double-wall corrugated pipes, and has the beneficial effects that the problems that when an existing double-wall corrugated pipe is installed, pipelines are mostly installed in a direct welding mode, the connecting and installing operation is tedious, the welding operation is very inconvenient, the construction period is long, the pipelines can be damaged by welding, and the construction cost is high are solved. And the pipeline can only be separated through cutting during disassembly and cannot be recycled for use, so that the construction and use cost is increased.

Description

Technical Field

[0001] This invention relates to the field of double-wall corrugated pipe technology, specifically to a modified high-density polyethylene double-wall corrugated pipe for underground use. Background Technology

[0002] High-density polyethylene (HDPE) double-wall corrugated pipe is a new type of pipe with a ring-shaped outer wall and a smooth inner wall. The outer wall has a ring-shaped corrugated structure, which greatly enhances the ring stiffness of the pipe, thereby increasing the pipe's resistance to soil load. In this respect, HDPE double-wall corrugated pipe has obvious advantages over other pipe materials. It has strong temperature resistance and can be used in environments with temperatures ranging from -40℃ to 60℃. At the same time, it has excellent impact resistance, high strength, and seismic performance. It is a new generation of water pipes that can replace traditional metal pipes. In the past, when installing existing double-wall corrugated pipes, the pipes were mostly installed by direct welding. The connection and installation operation was cumbersome, the welding operation was very inconvenient, the construction period was long, and the welding would damage the pipe. When disassembling, the pipes could only be separated by cutting, and they could not be recycled for reuse, which increased the construction and use costs. Summary of the Invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solution: a modified high-density polyethylene double-wall corrugated pipe for underground use, comprising: a corrugated pipe body, wherein the right end of the corrugated pipe body is provided with a combined thread, the left end of the corrugated pipe body is provided with a quick-connect structure, and the right end of the corrugated pipe body is provided with an adjustment and clamping structure.

[0004] The quick-connect structure includes: an insert groove, a rotating combination sleeve, a sealing insert tube, a sealing ring, and a combination internal thread;

[0005] The mounting groove is formed at the left end of the corrugated pipe body, the rotating assembly sleeve is movably fitted on the mounting groove, the sealing insert is installed at the left end of the corrugated pipe body, the sealing insert is located inside the rotating assembly sleeve, the sealing ring is installed on the inner end of the inner wall of the rotating assembly sleeve, the combined internal thread is formed on the inner wall of the rotating assembly sleeve, and the combined internal thread is located to the left of the sealing ring.

[0006] Preferably, the outer wall surface of the rotating assembly sleeve is provided with anti-slip texture.

[0007] Preferably, the outer diameter of the sealing insert is the same as the inner diameter of the right end of the corrugated pipe body.

[0008] Preferably, the adjusting locking structure includes: a mounting cavity, an adjusting turntable, two pairs of arc-shaped compression springs, two pairs of locking grooves, two pairs of rotating hinge seats, two pairs of first insertion locking rods, two pairs of second insertion locking rods, two pairs of adjusting stops, two pairs of adjusting grooves, and two pairs of adjusting rods;

[0009] The mounting cavity is located inside the right end of the bellows body. The adjusting turntable is installed inside the mounting cavity. One end of each pair of arc-shaped compression springs is installed on the side wall of the adjusting turntable, and the other end of each pair of arc-shaped compression springs is installed on the inner wall of the mounting cavity. Two pairs of locking grooves are located on the outer wall of the bellows body. Two pairs of rotating hinge seats are installed on the outer wall of the adjusting turntable and are located within the two pairs of locking grooves. One end of each pair of first insertion locking rods is movably installed on the two pairs of rotating hinge seats, and the other end of each pair of second insertion locking rods is installed on the two pairs of first insertion locking rods. Two pairs of adjusting rods are fixedly installed on the inner wall of each pair of locking grooves. The two pairs of adjusting grooves are located inside the two pairs of locking grooves, and the two pairs of adjusting rods pass through the two pairs of locking grooves and are installed on the adjusting turntable.

[0010] Preferably, the adjusting turntable has a four-end protrusion structure.

[0011] Preferably, the two pairs of arc-shaped compression springs are mounted on the adjusting turntable and the inner wall of the mounting cavity by means of fixing blocks at both ends.

[0012] Preferably, the width of the two pairs of second insertion locking rods is smaller than the width of the two pairs of first insertion locking rods.

[0013] Preferably, the two pairs of the first insertion locking rods are mounted on the two pairs of the rotating hinges via pins.

[0014] Preferably, the corrugated pipe body includes: a corrugated inner pipe, a reinforcing layer, a corrugated outer pipe, and a protective layer;

[0015] The reinforcing layer is wrapped around the outer wall of the corrugated inner tube, the corrugated outer tube is set on the outer wall of the reinforcing layer, and the protective layer is set on the outer wall of the corrugated outer tube.

[0016] Preferably, the corrugated inner tube and the corrugated outer tube are mixed with 3% nano-silica and 1.5% composite stabilizer during production.

[0017] Beneficial effects

[0018] This invention provides a modified high-density polyethylene double-wall corrugated pipe for underground use, which has the following advantages: This solution uses a lockable and fast-connecting assembly structure, which improves upon the traditional double-wall corrugated pipe structure. The assembly structure allows for quick and convenient connection of the corrugated pipes without damaging them. During subsequent disassembly, the pipes can be directly separated, ensuring pipe integrity. This allows for recyclability and reduces operating costs. It also solves the problems of existing double-wall corrugated pipes, where pipes are often installed by direct welding, resulting in cumbersome connection and installation operations, inconvenient welding, long construction periods, and damage to the pipes. Furthermore, disassembly requires cutting to separate the pipes, making recycling impossible and increasing construction and operating costs. Attached Figure Description

[0019] Figure 1 This is a front-view three-dimensional structural diagram of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0020] Figure 2 This is a rear-view three-dimensional structural diagram of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0021] Figure 3 This is a schematic diagram of the main structure of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0022] Figure 4 This is a schematic diagram of the main sectional view of the rotating assembly sleeve of the modified high-density polyethylene double-wall corrugated pipe for underground use described in this invention.

[0023] Figure 5 This is a side sectional view of the adjusting clamping structure of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0024] Figure 6 This is an enlarged schematic diagram of the fixing block structure of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0025] Figure 7 This is a side sectional view of the corrugated pipe body of a modified high-density polyethylene double-wall corrugated pipe for underground use according to the present invention.

[0026] In the diagram: 1-Corrugated pipe body; 2-Combined thread; 3-Embedding groove; 4-Rotating combination sleeve; 5-Sealing insert tube; 6-Sealing rubber ring; 7-Combined internal thread; 8-Anti-slip texture; 9-Mounting cavity; 10-Adjusting turntable; 11-Arc-shaped compression spring; 12-Locking groove; 13-Rotating hinge seat; 14-First insertion locking rod; 15-Second insertion locking rod; 16-Adjusting stop bar; 17-Adjusting groove; 18-Adjusting rod; 19-Fixing block; 20-Pin shaft; 101-Corrugated inner tube; 102-Reinforcing layer; 103-Corrugated outer tube; 104-Protective layer. Detailed Implementation

[0027] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example: Please refer to Figure 1-7 A modified high-density polyethylene double-wall corrugated pipe for underground use, comprising: a corrugated pipe body 1, characterized in that the right end of the corrugated pipe body 1 is provided with a combined thread 2, the left end of the corrugated pipe body 1 is provided with a quick combination connection structure, and the right end of the corrugated pipe body 1 is provided with an adjustment clamping structure.

[0029] The quick-connect structure includes: an insert groove 3, a rotating combination sleeve 4, a sealing insert tube 5, a sealing ring 6, and a combination internal thread 7.

[0030] The mounting groove 3 is formed at the left end of the corrugated pipe body 1. The rotating combination sleeve 4 is movably fitted on the mounting groove 3. The sealing insert tube 5 is installed at the left end of the corrugated pipe body 1. The sealing insert tube 5 is located inside the rotating combination sleeve 4. The sealing rubber ring 6 is installed on the inner side of the inner wall of the rotating combination sleeve 4. The combined internal thread 7 is formed on the inner wall of the rotating combination sleeve 4. The combined internal thread 7 is located to the left of the sealing rubber ring 6.

[0031] During pipe connection, multiple corrugated pipe bodies 1 are assembled and spliced ​​together. The left end of one corrugated pipe body 1 is combined and spliced ​​with the right end of another corrugated pipe body 1, so that the sealing insert 5 is inserted into the inner side of the right end of the corrugated pipe body 1. At the same time, the combined internal thread 7 on the inner wall of the rotating combination sleeve 4 is aligned with the combined thread 2. The rotating combination sleeve 4, which is installed on the corrugated pipe body 1 through the mounting groove 3, is rotated. The rotation of the rotating combination sleeve 4 drives the combined internal thread 7 to engage with the combined thread 2, thereby driving the two corrugated pipe bodies 1 to be assembled and spliced ​​together. The corrugated pipe body 1 continues to move inward into the rotating combination sleeve 4. At the same time, the sealing rubber ring 6 installed inside the rotating combination sleeve 4 is interference-fitted between the outer wall of the corrugated pipe body 1 and the inner wall of the rotating combination sleeve 4 to ensure the sealing of the connection. The adjusting clamping structure is used to clamp and fix the rotating combination sleeve 4 to prevent loosening during use.

[0032] In the specific implementation process, furthermore, the outer wall surface of the rotating combination sleeve 4 is provided with anti-slip texture 8.

[0033] In the specific implementation process, the outer diameter of the sealing insert 5 is the same as the inner diameter of the right end of the corrugated pipe body 1.

[0034] In the specific implementation process, the adjusting and locking structure further includes: mounting cavity 9, adjusting turntable 10, two pairs of arc compression springs 11, two pairs of locking grooves 12, two pairs of rotating hinge seats 13, two pairs of first insertion locking rods 14, two pairs of second insertion locking rods 15, two pairs of adjusting stops 16, two pairs of adjusting grooves 17 and two pairs of adjusting rods 18.

[0035] The mounting cavity 9 is located inside the right end of the bellows body 1. The adjusting turntable 10 is installed inside the mounting cavity 9. One end of each pair of arc-shaped compression springs 11 is installed on the side wall of the adjusting turntable 10, and the other end of each pair of arc-shaped compression springs 11 is installed on the inner wall of the mounting cavity 9. Two pairs of locking grooves 12 are located on the outer wall of the bellows body 1. Two pairs of rotating hinge seats 13 are installed on the outer wall of the adjusting turntable 10 and are located inside the two pairs of locking grooves 12. One end of each pair of first insertion locking rods 14 is movably installed on the two pairs of rotating hinge seats 13. Two pairs of second insertion locking rods 15 are installed on the other end of each pair of first insertion locking rods 14. Two pairs of adjusting rods 16 are fixedly installed on the inner wall of each pair of locking grooves 12. Two pairs of adjusting grooves 17 are located inside the two pairs of locking grooves 12. Two pairs of adjusting rods 18 pass through the two pairs of locking grooves 12 and are installed on the adjusting turntable 10.

[0036] After the two bellows bodies 1 are assembled by the rotating combination sleeve 4, the adjusting rod 18 drives the adjusting turntable 10 installed in the installation cavity 9 to rotate. When the adjusting turntable 10 rotates, it compresses the arc-shaped compression spring 11 installed in the middle position. At the same time, the adjusting turntable 10 drives the rotating hinge seat 13 to rotate. As the rotating hinge seat 13 rotates, it drives the first insertion locking rod 14 and the second insertion locking rod 15 to be driven into the locking groove 12. The adjusting combination sleeve 4 is further adjusted to rotate and move. When the rotating combination sleeve 4 moves to the outside of the locking groove 12, the adjusting rod 18 is released. The adjusting turntable 10 rebounds to its original position under the deformation elastic force of the arc-shaped compression spring 11. The adjusting turntable 10 drives the rotating hinge seat 13 to cooperate with the adjusting stop rod 16 to drive the locking rod composed of the first insertion locking rod 14 and the second insertion locking rod 15 to pop out and lock into the slot opened on the inner wall of the rotating combination sleeve 4, thereby locking and fixing the rotating combination sleeve 4 to prevent loosening during use and to ensure the stability and sealing of the pipeline connection.

[0037] In the specific implementation process, the adjustment turntable 10 is further described as having a four-end protrusion structure.

[0038] In the specific implementation process, the two pairs of arc-shaped compression springs 11 are further mounted on the adjusting turntable 10 and the inner wall of the mounting cavity 9 by fixing blocks 19.

[0039] In practice, the width of the two pairs of second insertion locking rods 15 is smaller than the width of the two pairs of first insertion locking rods 14.

[0040] In the specific implementation process, the two pairs of first insertion locking rods 14 are further mounted on the two pairs of rotating hinge seats 13 via pins 20.

[0041] In the specific implementation process, the corrugated pipe body 1 further includes: a corrugated inner pipe 101, a reinforcing layer 102, a corrugated outer pipe 103, and a protective layer 104.

[0042] The reinforcing layer 102 is wrapped around the outer wall of the corrugated inner tube 101, the corrugated outer tube 103 is disposed on the outer wall of the reinforcing layer 102, and the protective layer 104 is disposed on the outer wall of the corrugated outer tube 103.

[0043] In the specific implementation process, the corrugated inner tube 101 and the corrugated outer tube 103 are further mixed with 3% nano-silica and 1.5% composite stabilizer during production.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modified high-density polyethylene double-wall corrugated pipe for underground use, comprising: The bellows body (1) is characterized in that a combined thread (2) is provided at the right end of the bellows body (1), a quick combination connection structure is provided at the left end of the bellows body (1), and an adjustment clamping structure is provided at the right end of the bellows body (1). The quick-connect structure includes: an insert groove (3), a rotating combination sleeve (4), a sealing insert tube (5), a sealing ring (6), and a combination internal thread (7); The mounting groove (3) is opened at the left end of the corrugated pipe body (1), the rotating combination sleeve (4) is movably fitted on the mounting groove (3), the sealing insert (5) is installed at the left end of the corrugated pipe body (1), the sealing insert (5) is located inside the rotating combination sleeve (4), the sealing rubber ring (6) is installed on the inner side of the inner wall of the rotating combination sleeve (4), the combined internal thread (7) is opened on the inner wall of the rotating combination sleeve (4), and the combined internal thread (7) is located to the left of the sealing rubber ring (6).

2. The modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 1, characterized in that, The outer wall surface of the rotating assembly sleeve (4) is provided with anti-slip texture (8).

3. The modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 1, characterized in that, The outer diameter of the sealing insert (5) is the same as the inner diameter of the right end of the corrugated pipe body (1).

4. The modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 1, characterized in that, The adjusting clamping structure includes: a mounting cavity (9), an adjusting turntable (10), two pairs of arc-shaped compression springs (11), two pairs of locking grooves (12), two pairs of rotating hinge seats (13), two pairs of first insertion locking rods (14), two pairs of second insertion locking rods (15), two pairs of adjusting stops (16), two pairs of adjusting grooves (17), and two pairs of adjusting rods (18); The mounting cavity (9) is located inside the right end of the bellows body (1). The adjusting turntable (10) is installed inside the mounting cavity (9). One end of each pair of arc-shaped compression springs (11) is installed on the side wall of the adjusting turntable (10), and the other end of each pair of arc-shaped compression springs (11) is installed on the inner wall of the mounting cavity (9). Two pairs of locking grooves (12) are located on the outer wall of the bellows body (1). Two pairs of rotating hinge seats (13) are installed on the outer wall of the adjusting turntable (10). 3) Located within the two pairs of locking grooves (12), one end of each pair of first insertion locking rods (14) is movably mounted on the two pairs of rotating hinge seats (13), and the other end of each pair of second insertion locking rods (15) is mounted on the two pairs of first insertion locking rods (14). The two pairs of adjusting rods (16) are fixedly mounted on the inner wall of the two pairs of locking grooves (12), and the two pairs of adjusting grooves (17) are opened inside the two pairs of locking grooves (12). The two pairs of adjusting rods (18) pass through the two pairs of locking grooves (12) and are mounted on the adjusting turntable (10).

5. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 4, characterized in that, The adjustment turntable (10) has a four-end protrusion structure.

6. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 4, characterized in that, The two pairs of arc-shaped compression springs (11) are mounted on the adjusting turntable (10) and the inner wall of the mounting cavity (9) by fixing blocks (19).

7. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 4, characterized in that, The width of the two pairs of second insertion locking rods (15) is smaller than the width of the two pairs of first insertion locking rods (14).

8. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 4, characterized in that, The two pairs of first insertion locking rods (14) are mounted on the two pairs of rotating hinge seats (13) via pins (20).

9. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 1, characterized in that, The corrugated pipe body (1) includes: a corrugated inner pipe (101), a reinforcing layer (102), a corrugated outer pipe (103), and a protective layer (104); The reinforcing layer (102) is wrapped around the outer wall of the corrugated inner tube (101), the corrugated outer tube (103) is disposed on the outer wall of the reinforcing layer (102), and the protective layer (104) is disposed on the outer wall of the corrugated outer tube (103).

10. A modified high-density polyethylene double-wall corrugated pipe for underground use according to claim 9, characterized in that, The corrugated inner tube (101) and the corrugated outer tube (103) are mixed with 3% nano-silica and 1.5% composite stabilizer during production.

Images