A corrugated pipe convenient for docking installation

Abstract

The present invention discloses a corrugated pipe that is easy to dock and install, and relates to the technical field of corrugated pipes. The invention comprises a plug connector and a dock connector. One end of the plug connector is fixed with an insert sleeve arranged coaxially therewith. One end of the dock connector is provided with a hole groove arranged coaxially therewith and having an inner diameter consistent with the outer diameter of the insert sleeve. The outer side of the dock connector is provided with an internal threaded barrel that is slidably opened. One end of the internal threaded barrel is a cone head, and the internal threaded barrel is divided into a plurality of arc plates of the same specifications. The outer side of the dock connector is provided with a centering mechanism that enables each arc plate to perform centering movement. The outer side of the insert sleeve at one end away from the first rubber bellows is provided with a first thread that is compatible with the internal threaded barrel. The outer side of the insert sleeve at one end close to the first rubber bellows is provided with a second thread opposite to the first thread. The outer side of the insert sleeve is provided with an anti-loosening mechanism. The present invention can not only realize the rapid docking of the bellows, but also prevent the bellows connection from loosening.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated pipes, in particular to a corrugated pipe which is convenient for docking and installation. Background Art

[0002] A bellows is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and expansion direction.

[0003] After searching, the patent document with announcement number CN111946911B discloses an efficient stainless steel corrugated pipe that is easy to connect, including a hose main body, one end of the hose main body is fixedly connected to a fixed head, and the end of the fixed head away from the hose main body is movably connected to a mounting head, and the surface of the fixed head is fixedly connected to an arc-shaped fixing plate by a hinge, and the surface of the end of the arc-shaped fixing plate away from the fixed head is movably connected to the surface of the mounting head; this patent uses the arc-shaped fixing plate and the pushing ring, so that after the corrugated pipe is installed as a whole on the mounting head to be installed, the fixed head and the mounting head can be docked, and the pushing ring can be moved so that the pushing ring can drive the arc-shaped fixing plate to move and fit tightly against the surface of the mounting head, so that the arc-shaped fixing plate and the threads on the mounting head engage with each other, avoiding the use of additional mounting nuts and tools to fix the fixing head and the mounting head, thereby achieving the effect of facilitating the installation and fixation of the stainless steel corrugated pipe.

[0004] Based on the search and prior art, it was found that existing rubber bellows generally use a threaded connection method to obtain better sealing. The above patent is also modified based on the threaded method. However, when the liquid in the bellows just enters the bellows, water hammer may occur, which will cause the bellows to shake and cause the threads at the connection to loosen. If the flow rate of the liquid passing through the bellows is constantly changing, the bellows will continue to shake, which will also cause the threads to loosen, thereby causing the connection between the bellows to be unstable. Summary of the Invention

[0005] The object of the present invention is to provide a corrugated pipe that is easy to connect and install, so as to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a corrugated pipe that is easy to dock and install, comprising a plug connector and a docking connector, wherein one end of the plug connector is fixed with an insert sleeve arranged coaxially therewith, and one end of the docking connector is provided with a hole groove arranged coaxially therewith and having an inner diameter consistent with the outer diameter of the insert sleeve;

[0007] An internal threaded barrel is slidably provided on the outer side of the butt joint, one end of which is a cone head, and the internal threaded barrel is divided into a plurality of arc-shaped plates of the same specifications, and a centering mechanism is provided on the outer side of the butt joint to enable each arc-shaped plate to perform centering movement;

[0008] The outer side of the insert tube at one end away from the first rubber bellows is provided with a first thread adapted to the internal thread tube, and the outer side of the insert tube at one end close to the first rubber bellows is provided with a second thread opposite to the first thread;

[0009] An anti-loosening mechanism is provided on the outer side of the insert, and the anti-loosening mechanism includes an internal thread ring, and the insert is connected to the internal thread ring through a second thread;

[0010] The outer sliding sleeve of the insert is provided with an inner tapered sleeve that is adapted to the cone head, the outer side of the inner threaded ring is provided with an elastic structure that applies thrust to the inner tapered sleeve, the inner cone surface of the inner tapered sleeve is provided with a plurality of equidistant and annular docking grooves, and the outer cone surface of the arc plate is fixed with a protruding block that is adapted to the docking groove.

[0011] Preferably, it further comprises a first rubber bellows and a second rubber bellows, wherein one end of the first rubber bellows is embedded and fixed on the other end of the plug connector, and one end of the second rubber bellows is embedded and fixed on the other end of the docking connector.

[0012] Preferably, an annular groove coaxially arranged therewith is provided on the inner wall of one end of the hole groove, and a sealing ring is embedded and fixed in the interior of the annular groove.

[0013] Preferably, the centering mechanism includes a first rotating ring, which is coaxially arranged with the docking joint and the two form a rotating fit. The annular surface of the first rotating ring is provided with a plurality of equidistant and annular guide grooves, and a sliding block is provided for sliding inside the guide groove. The plurality of sliding blocks are respectively fixed one-to-one with a plurality of arc plates.

[0014] Preferably, the centering mechanism also includes a fixed ring and a second rotating ring, the fixed ring is coaxially fixed to the first rotating ring, the second rotating ring is coaxially arranged with the fixed ring and the two form a rotating fit, the outer side of the second rotating ring is provided with a plurality of equidistant and annularly distributed inclined grooves, the inner sliding of the inclined groove is provided with a sliding column, and the plurality of sliding columns are respectively fixed one-to-one with a plurality of sliding blocks.

[0015] Preferably, the centering mechanism further includes a plurality of tension springs, both ends of which are fixed with a first fixed column and a second fixed column, one end of the first fixed column is fixed on the first rotating ring, and one end of the second fixed column is fixed on the second rotating ring.

[0016] Preferably, a limiting block is fixed to one end of the sliding post, and both the limiting block and the sliding block are in contact with the second rotating ring.

[0017] Preferably, the elastic structure includes a plurality of flat-headed columns, the non-flat-headed ends of the flat-headed columns are fixed to the internal threaded ring, the column sliding sleeve of the flat-headed columns is provided with positioning ears, the positioning ears are fixed to the inner conical sleeve, and the outer side of the column of the flat-headed columns is provided with a spring, and the two ends of the spring are respectively in contact with the positioning ears and the internal threaded ring.

[0018] The present invention provides a bellows that is easy to dock and install by improvement. Compared with the prior art, it has the following improvements and advantages:

[0019] First, the present invention is used to connect an internally threaded barrel composed of two or more arc-shaped plates, the internally threaded barrel is arranged on a butt joint, and after the butt joint on one bellows and the plug joint of another bellows are plugged in, each arc-shaped plate is synchronously moved in a centering mechanism, so that the internal thread of the arc-shaped plate is engaged with the threaded plug joint provided on the outside, thereby completing the locking, and then the anti-loosening mechanism is unable to connect with each arc-shaped plate, thereby completing the anti-loosening. Therefore, it can be seen that the present invention can not only realize the rapid docking of the bellows, but also prevent the bellows connection from being caused by the occurrence of the problem;

[0020] Secondly, the inner tapered sleeve of the anti-loosening mechanism of the present invention can press the inner thread of the arc plate onto the outer thread of the plug connector, thereby improving the fit between the inner thread of the arc plate and the outer thread of the plug connector, thereby improving the butt sealing performance. In addition, the anti-loosening mechanism can apply a thrust to the arc plate, further improving the fit between the inner thread of the arc plate and the outer thread of the plug connector, while eliminating the gap between the threads, improving the butt sealing performance, and achieving anti-loosening performance.

[0021] Thirdly, the internal threaded barrel and the anti-loosening mechanism of the present invention are respectively arranged on the outside of the butt joint and the plug joint, and the two have a simple structure, which is convenient for manufacturing and subsequent maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the internal threaded barrel and the butt joint of the present invention from a first perspective;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the internally threaded barrel and the butt joint of the present invention from a second perspective;

[0027] Figure 5 This is a schematic cross-sectional view of the internal threaded barrel and the butt joint of the present invention;

[0028] Figure 6 Schematic diagram of the three-dimensional structure of the curved plate of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the anti-loosening mechanism of the present invention;

[0030] Figure 8 This is a schematic diagram of the inner cone sleeve structure of the present invention;

[0031] Figure 9 It is a schematic diagram of the three-dimensional structure of the insert sleeve and the plug connector of the present invention.

[0032] Reference numerals:

[0033] 1. First rubber bellows; 2. Second rubber bellows; 3. Plug joint; 4. Anti-loosening mechanism; 5. Centering mechanism; 6. Butt joint; 7. Internally threaded barrel; 8. First rotating ring; 9. Guide groove; 10. Fixed ring; 11. Second rotating ring; 12. Inclined groove; 13. First fixed column; 14. Tension spring; 15. Second fixed column; 16. Hole groove; 17. Cone head; 18. Sealing ring; 19. Ring groove; 20. Arc plate; 21. Protruding block; 22. Sliding block; 23. Sliding column; 24. Limiting block; 25. Inner tapered sleeve; 26. Butt joint groove; 27. Flat head column; 28. Positioning ear; 29. Spring; 30. Internally threaded ring; 31. First thread; 32. Second thread; 33. Insert barrel. DETAILED DESCRIPTION

[0034] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] The present invention provides a bellows that is easy to dock and install through improvement. The technical solution of the present invention is:

[0036] like Figures 1 to 9As shown, an embodiment of the present invention provides a corrugated pipe that is easy to dock and install, including a plug connector 3 and a docking connector 6. One end of the plug connector 3 is fixed with an insert 33 arranged coaxially therewith, and one end of the docking connector 6 is provided with a hole groove 16 arranged coaxially therewith and having an inner diameter consistent with the outer diameter of the insert 33;

[0037] An internal threaded barrel 7 is slidably provided on the outer side of the butt joint 6. One end of the internal threaded barrel 7 is a cone head 17. The internal threaded barrel 7 is divided into a plurality of arc-shaped plates 20 of the same specifications. A centering mechanism 5 is provided on the outer side of the butt joint 6 to enable each arc-shaped plate 20 to perform centering movement.

[0038] The outer side of the insert 33 away from the first rubber bellows 1 is provided with a first thread 31 adapted to the internal threaded barrel 7, and the outer side of the insert 33 close to the first rubber bellows 1 is provided with a second thread 32 opposite to the first thread 31;

[0039] An anti-loosening mechanism 4 is provided on the outside of the insert 33. The anti-loosening mechanism 4 includes an internal thread ring 30. The insert 33 is connected to the internal thread ring 30 via a second thread 32.

[0040] The outer sliding sleeve of the insert 33 is provided with an inner tapered sleeve 25 that is compatible with the cone head 17. The outer side of the internal threaded ring 30 is provided with an elastic structure that applies thrust to the inner tapered sleeve 25. The inner conical surface of the inner tapered sleeve 25 is provided with multiple equidistant and annular docking grooves 26, and the outer conical surface of the arc plate 20 is fixed with a protruding block 21 that is compatible with the docking groove 26.

[0041] Specifically, it also includes a first rubber bellows 1 and a second rubber bellows 2, one end of the first rubber bellows 1 is embedded and fixed on the other end of the plug connector 3, and one end of the second rubber bellows 2 is embedded and fixed on the other end of the docking connector 6;

[0042] It can be seen from the above connection relationship that after the docking joint 6 on the second rubber bellows 2 and the plug joint 3 of the first rubber bellows 1 are connected, each arc plate 20 is synchronously centered by the centering mechanism 5, so that the internal thread of the arc plate 20 is engaged with the threaded plug joint 3 provided on the outside, thereby completing the locking. The elastic structure makes the inner conical surface of the inner tapered sleeve 25 contact the cone head 17 surface of the arc plate 20, and at the same time, the docking groove 26 in the inner tapered sleeve 25 is engaged with the protruding block 21 of the arc plate 20. If the internal thread ring 30 or the internal thread barrel 7 has a rotation tendency, since the first thread 31 and the second thread 32 rotate in opposite directions, the internal thread ring 30 or the internal thread barrel 7 will hinder each other from rotating, thereby achieving anti-loosening.

[0043] Specifically, in conjunction with Figure 5 As shown, an inner wall of one end of the hole groove 16 is provided with an annular groove 19 coaxially arranged therewith, and a sealing ring 18 is embedded and fixed inside the annular groove 19;

[0044] From the above connection relationship, it can be seen that the sealing ring 18 is provided to improve the sealing between the plug connector 3 and the docking connector 6 .

[0045] Specifically, in conjunction with Figure 3 -Attached Figure 6 As shown, the centering mechanism 5 includes a first rotating ring 8, which is coaxially arranged with the docking head 6 and the two form a rotational fit. The annular surface of the first rotating ring 8 is provided with a plurality of equidistant and annularly distributed guide grooves 9, and a sliding block 22 is provided inside the guide groove 9 for sliding. The plurality of sliding blocks 22 are respectively fixed one-to-one with the plurality of arc-shaped plates 20. The centering mechanism 5 also includes a fixed ring 10 and a second rotating ring 11. The fixed ring 10 is coaxially fixed with the first rotating ring 8, and the second rotating ring 11 is coaxially arranged with the fixed ring 10 and the two form a rotational fit. The outer side of the second rotating ring 11 is provided with a plurality of equidistant and annularly distributed inclined grooves 12, and the inner surface of the inclined groove 12 is provided with a sliding post 23, and the plurality of sliding posts 23 are respectively fixed one-to-one with the plurality of sliding blocks 22;

[0046] From the above connection relationship, we can know that: Figure 4 Set it to the initial state. When installing, stabilize the first rotating ring 8 and rotate the second rotating ring 11. The first rotating ring 8 causes the second rotating ring 11 to rotate clockwise. The inclined groove 12 of the second rotating ring 11 will slide the column 23. The column 23 drives the sliding block 22 upward along the guide groove 9. The sliding block 22 drives the arc plate 20, and each arc plate 20 is separated from each other.

[0047] Specifically, in conjunction with Figure 4 As shown, the centering mechanism 5 further includes a plurality of tension springs 14, both ends of the tension spring 14 are fixed with a first fixing column 13 and a second fixing column 15, one end of the first fixing column 13 is fixed to the first rotating ring 8, and one end of the second fixing column 15 is fixed to the second rotating ring 11;

[0048] It can be seen from the above connection relationship that when there is no external force, the tension spring 14 is stretched, so that the second rotating ring 11 causes the slide post 23 to be at the bottom of the inclined groove 12 .

[0049] Specifically, combined Figure 3-Figure 7 As shown, a limit block 24 is fixed to one end of the sliding post 23, and both the limit block 24 and the sliding block 22 are in contact with the second rotating ring 11;

[0050] It can be seen from the above connection relationship that the limiting block 24 and the sliding block 22 are in contact in order to prevent the arc-shaped plate 20 from being separated from the first rotating ring 8 and the second rotating ring 11 .

[0051] Specifically, combined Figure 7-Figure 9As shown, the elastic structure includes a plurality of flat-headed columns 27, the non-flat ends of the flat-headed columns 27 are fixed to the internal threaded ring 30, the column sliding sleeves of the flat-headed columns 27 are provided with positioning ears 28, the positioning ears 28 are fixed to the inner tapered sleeve 25, and the outer side of the column body of the flat-headed columns 27 is provided with a spring 29, the two ends of the spring 29 are in contact with the positioning ears 28 and the internal threaded ring 30 respectively;

[0052] From the above connection relationship, it can be seen that: in the absence of external force, the spring 29 is in a compressed state, the spring 29 applies a thrust to the positioning ear 28, and the positioning ear 28 guides the force to the inner tapered sleeve 25, so that the inner tapered sleeve 25 contacts the internal threaded barrel 7.

[0053] Working principle:

[0054] Will Figure 4 Set to the initial state, when installing, stabilize the first rotating ring 8 and rotate the second rotating ring 11. The first rotating ring 8 drives the second rotating ring 11, and the second rotating ring 11 rotates clockwise. The second fixed column 15 on the second rotating ring 11 rotates accordingly, and the distance between the first fixed column 13 and the second fixed column 15 increases. The tension spring 14 between the first fixed column 13 and the second fixed column 15 is lengthened, and the inclined groove 12 of the second rotating ring 11 moves the sliding column 23. The sliding column 23 drives the sliding block 22 upward along the guide groove 9. The sliding block 22 drives the arc plates 20, and the arc plates 20 are separated from each other.

[0055] After the curved plates 20 are separated, the insert 33 of the plug connector 3 is inserted into the hole 16 of the docking connector 6. Then, the second rotating ring 11 is loosened, the tension spring 14 is reset, and the curved plates 20 are reunited. If the internal thread of the curved plate 20 is not engaged with the first thread 31 of the insert 33, the entire first rotating ring 8 is rotated until the internal thread of the curved plate 20 is engaged with the first thread 31 of the insert 33.

[0056] Move the inner tapered sleeve 25 backward, compressing the spring 29 and rotating the inner threaded ring 30. The inner threaded ring 30 drives the inner tapered sleeve 25 to rotate through the flat head column 27, so that the docking groove 26 of the inner tapered sleeve 25 is aligned with the protruding block 21 of the curved plate 20. After alignment, release the inner tapered sleeve 25, and the spring 29 returns to its original position. The inner conical surface of the inner tapered sleeve 25 contacts the cone head 17 of the curved plate 20, and the docking groove 26 in the inner tapered sleeve 25 engages with the protruding block 21 of the curved plate 20.

[0057] If the internal thread ring 30 or the internal thread barrel 7 has a rotation tendency, since the first thread 31 and the second thread 32 rotate in opposite directions, the internal thread ring 30 or the internal thread barrel 7 will hinder each other from rotating, thereby preventing loosening.

[0058] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A corrugated pipe convenient for docking installation, comprising a plug connector (3) and a docking connector (6), characterized in that: One end of the plug connector (3) is fixed with an insert sleeve (33) coaxially arranged therewith, and one end of the butt connector (6) is provided with a hole groove (16) coaxially arranged therewith and having an inner diameter consistent with the outer diameter of the insert sleeve (33); An internal threaded barrel (7) is slidably provided on the outer side of the butt joint (6), one end of the internal threaded barrel (7) is a cone head (17), and the internal threaded barrel (7) is divided into a plurality of arc-shaped plates (20) of the same specifications, and a centering mechanism (5) is provided on the outer side of the butt joint (6) for causing each arc-shaped plate (20) to perform a centering movement; The outer side of the insert (33) at one end away from the first rubber bellows (1) is provided with a first thread (31) adapted to the internal threaded barrel (7); the outer side of the end of the insert (33) close to the first rubber bellows (1) is provided with a second thread (32) opposite to the first thread (31); An anti-loosening mechanism (4) is provided on the outside of the insert (33), the anti-loosening mechanism (4) comprises an internal thread ring (30), and the insert (33) is connected to the internal thread ring (30) via a second thread (32); The outer sliding sleeve of the insert (33) is provided with an inner tapered sleeve (25) adapted to the cone head (17), the outer side of the inner threaded ring (30) is provided with an elastic structure for applying thrust to the inner tapered sleeve (25), the inner tapered surface of the inner tapered sleeve (25) is provided with a plurality of equidistant and annularly distributed docking grooves (26), and the outer tapered surface of the arc plate (20) is fixed with a protruding block (21) adapted to the docking groove (26).

2. The corrugated pipe for easy docking installation according to claim 1, characterized in that: It also includes a first rubber bellows (1) and a second rubber bellows (2), wherein one end of the first rubber bellows (1) is embedded and fixed on the other end of the plug connector (3), and one end of the second rubber bellows (2) is embedded and fixed on the other end of the docking connector (6).

3. The corrugated pipe for easy docking installation according to claim 1, characterized in that: An inner wall at one end of the hole groove (16) is provided with an annular groove (19) coaxially arranged therewith, and a sealing ring (18) is embedded and fixed inside the annular groove (19).

4. The corrugated pipe for easy docking installation according to claim 1, characterized in that: The centering mechanism (5) includes a first rotating ring (8), the first rotating ring (8) and the docking joint (6) are coaxially arranged and the two form a rotating fit, the annular surface of the first rotating ring (8) is provided with a plurality of equidistant and annularly distributed guide grooves (9), the interior of the guide groove (9) is provided with a sliding block (22), and the plurality of sliding blocks (22) are fixed one-to-one with the plurality of arc plates (20).

5. The corrugated pipe for easy docking installation according to claim 4, characterized in that: The centering mechanism (5) further comprises a fixed ring (10) and a second rotating ring (11), wherein the fixed ring (10) is coaxially fixed to the first rotating ring (8), and the second rotating ring (11) is coaxially arranged with the fixed ring (10) and the two form a rotating fit, and the outer side of the second rotating ring (11) is provided with a plurality of equidistant and annularly distributed inclined grooves (12), and a sliding column (23) is slidingly arranged inside the inclined groove (12), and the plurality of sliding columns (23) are fixed one-to-one with the plurality of sliding blocks (22).

6. The corrugated pipe for easy docking installation according to claim 5, characterized in that: The centering mechanism (5) further comprises a plurality of tension springs (14), both ends of which are fixed with a first fixed column (13) and a second fixed column (15), one end of the first fixed column (13) being fixed to the first rotating ring (8), and one end of the second fixed column (15) being fixed to the second rotating ring (11).

7. The corrugated pipe for easy docking installation according to claim 5, characterized in that: A limiting block (24) is fixed to one end of the sliding column (23), and both the limiting block (24) and the sliding block (22) are in contact with the second rotating ring (11).

8. The corrugated pipe for easy docking installation according to claim 1, characterized in that: The elastic structure includes a plurality of flat-headed columns (27), the non-flat-headed ends of the flat-headed columns (27) are fixed to the internal threaded ring (30), the column sliding sleeve of the flat-headed columns (27) is provided with a positioning ear (28), the positioning ear (28) is fixed to the inner conical sleeve (25), and the outer side of the column of the flat-headed columns (27) is provided with a spring (29), and the two ends of the spring (29) are in contact with the positioning ear (28) and the internal threaded ring (30) respectively.

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