A high-density polyethylene corrugated pipe

Abstract

The present invention provides a high-density polyethylene corrugated pipe, comprising a corrugated pipe body, wherein a steel bar skeleton is arranged in the corrugated pipe body, wherein the steel bar skeleton comprises a plurality of corrugated ribs circumferentially arranged in the corrugated pipe body, and a plurality of reinforcing rings arranged in parallel in the corrugated pipe body, wherein the reinforcing rings are used to connect the crest points of the plurality of corrugated ribs in the same horizontal plane together. The high-density polyethylene corrugated pipe has a steel bar skeleton embedded in the corrugated pipe body, which is conducive to improving the structural strength of the high-density polyethylene corrugated pipe, and solves the problem of poor structural strength existing in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipes, in particular to a high-density polyethylene corrugated pipe. Background Art

[0002] High-density polyethylene corrugated pipe is a non-toxic pipe made of polyethylene synthesis and processing. It is often used in post-tensioned prestressed concrete structures as a hole-forming pipe for prestressed tendons. Its application areas include underground sewage and rainwater collection in municipal construction, mines, building ventilation wires, cable sheaths, farmland, orchards, and forest belts, drainage and irrigation networks, garbage treatment plant infiltration water networks, chemical wastewater discharge networks, drainage and flood discharge networks of water conservancy projects, railways, highways, buried pipes, seepage, drainage pipes, bridge prestressed pipes, etc.

[0003] The existing high-density polyethylene corrugated pipe is formed by one-time extrusion using a corrugated pipe extruder. The pipe body of the high-density polyethylene corrugated pipe is composed of high-density polyethylene. When subjected to external impact, the high-density polyethylene corrugated pipe is easily deformed and broken, and has poor structural strength. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a high-density polyethylene corrugated pipe in view of the above-mentioned deficiencies existing in the prior art, which solves the problem of poor structural strength existing in the prior art.

[0005] The above-mentioned inventive object of the present invention is achieved through the following technical scheme: a high-density polyethylene corrugated pipe, comprising a corrugated pipe body, wherein a steel frame is arranged in the corrugated pipe body, and the steel frame includes a plurality of corrugated ribs circumferentially arranged in the corrugated pipe body and a plurality of reinforcement rings parallelly arranged in the corrugated pipe body, and the reinforcement rings are used to connect the peak points of a plurality of corrugated ribs in the same horizontal plane together.

[0006] The present invention is further configured as follows: a clamping seat mechanism and a clamping head mechanism for connecting adjacent corrugated pipes are respectively provided on both ends of the corrugated pipe body.

[0007] The present invention is further configured as follows: the socket mechanism includes a socket arranged on the end of the corrugated tube body, a socket is provided on the end surface of the socket facing away from the corrugated tube body, a sealing groove is provided on the hole wall of the socket, the clamping head mechanism includes a clamping head arranged at one end of the corrugated tube body away from the socket and used for inserting into the clamping hole, an annular groove aligned with the sealing groove is provided on the outer side wall of the clamping head, a sealing ring is embedded in the annular groove, and a pushing ring mechanism is provided in the clamping head for pushing the sealing ring to open outward and partially embedded in the sealing groove.

[0008] The present invention is further configured as follows: a plurality of movable grooves connected to the annular groove are provided on the end surface of the chuck facing away from the corrugated tube body; the push ring mechanism includes a push plate slidably arranged in the annular groove and located on the inner side of the sealing ring, and a cam rotatably arranged in the movable groove and used for pushing the push plate to move away from the center of the chuck.

[0009] The present invention is further configured as follows: a plurality of spring grooves 1 are provided on the bottom wall of the annular groove corresponding to each push plate, a spring groove 2 aligned with the spring groove 1 is provided on the end surface of the push plate facing the spring groove 1, and a tension spring for pulling the push plate to reset is provided between the bottom wall of the spring groove 1 and the bottom wall of the spring groove 2.

[0010] The present invention is further configured as follows: a pressure ring is provided on the end surface of the clamp facing away from the corrugated tube.

[0011] The present invention is further configured as follows: a rotating hole is provided on the bottom wall of each of the movable grooves, a gear groove connected with the plurality of rotating holes is provided on the outer wall of the chuck, each of the cams is coaxially provided with a rotating shaft passing through the rotating hole and rotatably cooperating with the rotating hole, each of the rotating shafts is coaxially provided with a driving gear rotatably arranged in the gear groove at one end away from the cam, an annular gear ring flange is provided on the outer side of the plurality of driving gears and is used to drive the plurality of driving gears to rotate simultaneously, the inner wall of the gear ring flange is provided with internal teeth meshing with the plurality of driving gears, and the portion of the gear ring flange close to the center is embedded in the gear groove.

[0012] The present invention is further configured as follows: a holder flange plate which is flange-connected to the gear ring flange plate is provided on the outer side wall of the holder.

[0013] The present invention is further configured as follows: the bellows body includes a bellows section, a clamp connecting section which is arranged at one end of the bellows section close to the clamp and has an external thread; a clamp threaded hole which is threadedly matched with the clamp connecting section is provided on the end surface of the clamp facing the bellows body; a clamp sealing gasket is provided between the end surface of the clamp connecting section which is away from the bellows section and the clamp.

[0014] The present invention is further configured as follows: a socket connecting section with an external thread is provided at one end of the corrugated section close to the socket, a socket threaded hole that cooperates with the socket connecting section thread is provided on the end surface of the socket facing the corrugated tube body, and a socket sealing gasket is provided between the end surface of the socket connecting section away from the corrugated section and the socket.

[0015] In summary, the beneficial technical effects of the present invention are:

[0016] (1) During processing, workers use fixtures to fix eight corrugated ribs, and then weld nine reinforcement rings to form a complete steel bar skeleton. Then, the steel bar skeleton is placed in the mold cavity of the injection molding machine and fixed, and then high-density polyethylene is injected into the mold cavity. The corrugated pipe body is formed by injection molding. The connection strength between the steel bar skeleton and the high-density polyethylene is relatively high. Embedding the steel bar skeleton in the corrugated pipe body is conducive to improving the structural strength of the high-density polyethylene corrugated pipe, and solves the problem of poor structural strength existing in the prior art.

[0017] (2) The high-density polyethylene corrugated pipe solves the problem of slow installation speed in the prior art by providing a fast-connecting clamping seat mechanism and a clamping head structure at both ends of the corrugated pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the high-density polyethylene corrugated pipe in the present invention;

[0019] Figure 2 It is a cross-sectional structural diagram of the high-density polyethylene corrugated pipe of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the steel reinforcement skeleton in the present invention;

[0021] Figure 4 It is a cross-sectional structural diagram of the clamping head mechanism in the present invention;

[0022] Figure 5 It is a structural schematic diagram of the clamping head mechanism of the present invention without the pressure ring;

[0023] Figure 6 It is a structural schematic diagram of the clamping head mechanism of the present invention without the clamping head and the pressure ring.

[0024] In the above drawings: 1, bellows body; 2, bellows section; 3, holder connection section; 4, clamp head connection section; 5, steel skeleton; 51, bellows body; 52, reinforcement ring; 6, holder mechanism; 7, clamp head mechanism; 8, holder; 9, holder threaded hole; 10, holder sealing gasket; 11, holder hole; 12, sealing groove; 13, holder flange; 14, clamp head; 15, holder threaded hole; 16, clamp head sealing gasket; 17, annular groove; 18, movable groove; 19, rotating hole; 20, gear groove; 21, sealing ring; 22, push plate; 23, spring groove one; 24, spring groove two; 25, tension spring; 26, cam; 261, convex angle one; 262, convex angle two; 27, pressure ring; 28, rotating shaft; 29, driving gear; 30, gear ring flange; 31, internal gear. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1 As shown, the present invention proposes a high-density polyethylene corrugated pipe, comprising a corrugated pipe body 1, and a clamping seat mechanism 6 and a clamping head mechanism 7 for connecting adjacent corrugated pipes are respectively arranged on both ends of the corrugated pipe body 1.

[0027] like Figure 1 and 2 As shown, the corrugated pipe body 1 is made of high-density polyethylene, and the corrugated pipe body 1 includes a corrugated section 2, a base connecting section 3 and a clamping head connecting section 4 which are integrally connected to both ends of the corrugated section 2, the outer wall of the base connecting section 3 has an external thread, and the outer wall of the clamping head connecting section 4 has an external thread.

[0028] like Figure 3 As shown, a steel skeleton 5 is arranged in the corrugated tube body 1, and the steel skeleton 5 includes a corrugated rib 51 and a reinforcement ring 52. In this embodiment, the corrugated rib 51 is corrugated, the number of the corrugated ribs 51 is eight, and the eight corrugated ribs 51 are equidistantly distributed in the corrugated section 2, the corrugated ribs 51 are arranged in the corrugated section 2 in an embedded manner, the reinforcement ring 52 is a circular steel bar, the number of the reinforcement rings 52 is nine, and the nine reinforcement rings 52 are parallel to each other, the reinforcement ring 52 is used to connect the wave crest points of the eight corrugated ribs 51 in the same horizontal plane together, the reinforcement ring 52 and the corrugated rib 51 are fixedly connected by welding, and the nine reinforcement rings 52 connect the eight corrugated ribs 51 into a steel skeleton 5 with higher integrity.

[0029] During processing, workers use tooling fixtures to fix eight corrugated ribs 51, and then weld nine reinforcement rings 52 to form a complete steel skeleton 5. Then, the steel skeleton 5 is placed in the cavity of the injection molding machine and fixed. Then, high-density polyethylene is injected into the cavity. The corrugated pipe body 1 is formed by injection molding. The connection strength between the steel skeleton 5 and the high-density polyethylene is relatively high. Embedding the steel skeleton 5 in the corrugated pipe body 1 is beneficial to improving the structural strength of the high-density polyethylene corrugated pipe and solves the problem of poor structural strength in the prior art.

[0030] like Figure 1 and 2As shown, the base mechanism 6 includes a cylindrical base 8, and a base threaded hole 9 is provided on the end surface of the base 8 facing the corrugated pipe body 1. The base 8 is threadedly connected to the base connection section 3 through the base threaded hole 9, and a base sealing gasket 10 is provided between the end surface of the base connection section 3 facing away from the corrugated section 2 and the base 8. During installation, the base sealing gasket 10 is first placed in the base threaded hole 9, and then the base connection section 3 is screwed into the connection hole of the base 8, so that the corrugated pipe body 1 and the base mechanism 6 are detachably connected together, and the base sealing gasket 10 forms a seal between the corrugated pipe body 1 and the base 8. A circular clamping hole 11 is provided on the end surface of the base 8 facing away from the corrugated pipe body 1, and a circular sealing groove 12 is provided on the hole wall of the clamping hole 11. A base flange 13 is integrally connected to the outer wall of the base 8, and the base flange 13 is located at the end of the base 8 away from the corrugated pipe body 1.

[0031] like Figure 2 and 4 As shown, the clamp mechanism 7 includes a cylindrical clamp 14, which is used to be inserted into the clamp hole 11 of the adjacent bellows. The clamp 14 is installed at the end of the bellows body 1 away from the clamp seat 8. The clamp 14 is provided with a clamp threaded hole 15 on the end surface facing the bellows body 1. The clamp 14 is threadedly connected with the clamp connection section 4 through the clamp threaded hole 15. A clamp sealing gasket 16 is provided between the end surface of the clamp connection section 4 away from the corrugated section 2 and the clamp 14. During installation, the clamp sealing gasket 16 is first placed in the clamp threaded hole 15, and then the clamp connection section 4 is screwed into the connection hole of the clamp 14, so that the bellows body 1 and the clamp mechanism 7 are detachably connected together, and the clamp sealing gasket 16 forms a seal between the bellows body 1 and the clamp 14.

[0032] like Figure 4 and 5 As shown, a circular annular groove 17 is provided on the outer wall of the clamp head 14, and the annular groove 17 is used to align with the sealing groove 12. Four movable grooves 18 are equidistantly provided on the end surface of the clamp head 14 away from the corrugated tube body 1, and the four movable grooves 18 are connected to the annular groove 17. A circular rotating hole 19 is provided on the bottom wall of each movable groove 18, and a circular gear groove 20 is provided in the middle of the outer wall of the clamp head 14, and the gear groove 20 is connected to the four rotating holes 19.

[0033] like Figure 4 and 5As shown, a sealing ring 21 is embedded in the annular groove 17, and a push ring mechanism is provided in the clamp head 14 for pushing the sealing ring 21 to open outward and partially embed into the sealing groove 12. The push ring mechanism includes a push plate 22, which is a fan ring. There are four push plates 22, and the four push plates 22 form a circular ring. The push plates 22 are slidably arranged in the annular groove 17, and the push plates 22 are located on the inner side of the sealing ring 21. The midpoint of the end surface of each push plate 22 facing the sealing ring 21 is glued to the sealing ring 21, so that the push plate 22 can drive the sealing ring 21 to move.

[0034] like Figure 5 and 6 As shown, two symmetrical spring grooves 1 23 are provided on the bottom wall of the annular groove 17 corresponding to each push plate 22, and a spring groove 24 aligned with the spring groove 1 23 is provided on the end surface of the push plate 22 facing the spring groove 1 23. The aligned spring grooves 1 23 and 24 can be assembled into a rectangular groove, and a tension spring 25 is provided between the bottom wall of the spring groove 1 and the bottom wall of the spring groove 2 24. One end of the tension spring 25 is welded to the bottom wall of the spring groove 1 23, and the other end is welded to the bottom wall of the spring groove 2 24. The tension spring 25 is used to pull the push plate 22 to reset.

[0035] like Figure 5 and 6 As shown, a cam 26 is rotatably arranged in the movable groove 18, and the cam 26 is used to push the push plate 22 to move away from the center of the clamp head 14. The cam 26 is a four-corner cam 26, and the cam 26 has two convex angles 1 261 closer to the center and two convex angles 262 farther from the center. The wheel surface of the cam 26 includes two convex angles 1 261 and two convex angles 262 alternately arranged, and an arc surface located between the convex angles 1 261 and the convex angles 262. In the initial state, the end surface of the push plate 22 facing the cam 26 abuts against one of the convex angles 1 261 of the cam 26, and the cam 26 rotates until the convex angle 2 262 of the cam 26 abuts against the end surface of the push plate 22 facing the cam 26, and the push plate 22 is pushed by the cam 26 to move away from the center of the clamp head 14, and the sealing ring 21 opens outward, and at this time, the tension spring 25 is transformed into a stretched state. During disassembly, the cam 26 rotates until the convex corner 261 of the cam 26 abuts against the end surface of the push plate 22 facing the cam 26, and the tension spring 25 is reset, thereby pulling the push plate 22 to move toward the center of the card seat 8, thereby driving the sealing ring 21 to retract.

[0036] like Figure 4 As shown, a circular ring 27 is screwed to the end surface of the clamp 14 facing away from the bellows body 1 . The ring 27 is used to restrict the cam 26 in the movable groove 18 and restrict the push plate 22 and the sealing ring 21 in the annular groove 17 .

[0037] like Figure 4 and 6As shown, each cam 26 is coaxially connected with a rotating shaft 28, which passes through the rotating hole 19 and rotates with the rotating hole 19. The end of each rotating shaft 28 away from the cam 26 passes through the rotating hole 19 and is connected to a driving gear 29. The driving gear 29 is rotatably arranged in the gear groove 20. A circular ring gear flange 30 is arranged on the outer side of the four driving gears 29. The inner wall of the ring gear flange 30 has internal teeth 31 meshing with the four driving gears 29. The part of the ring gear flange 30 close to the center is embedded in the gear groove 20. The ring gear flange 30 is used to drive the four gears to rotate simultaneously. When the clamping head 14 is fully inserted into the clamping hole 11, the ring gear flange 30 and the clamping seat flange 13 are flange-connected by bolts. A gasket for sealing is arranged between the ring gear flange 30 and the clamping seat flange 13. At this time, the clamping seat mechanism 6 of the previous bellows and the clamping head mechanism 7 of the next bellows are connected together.

[0038] The detailed working process of this embodiment is as follows:

[0039] S1: Workers first dig a trench on the road for installing the pipeline, and then put the corrugated pipes into the trench one by one.

[0040] S2: The worker inserts the clamping head 14 of the latter bellows into the clamping hole 11 of the former bellows until the clamping head 14 is completely inserted into the clamping hole 11. At this time, the sealing groove 12 and the sealing ring 21 are aligned. Then the worker rotates the gear ring flange 30 clockwise, and the four driving gears 29 rotate accordingly, and then drives the cam 26 to rotate through the rotating shaft 28, until the convex corner 262 of the cam 26 abuts against the end face of the push plate 22 facing the cam 26, and the push plate 22 is pushed by the cam 26 to move away from the center of the clamping head 14, and the sealing ring 21 opens outward until the sealing ring 21 is partially embedded in the sealing groove 12;

[0041] S3: The worker uses bolts to connect the base flange 13 of the previous bellows and the gear ring flange 30 of the next bellows together. At this time, the gear ring flange 30 is restricted from rotating, and the two adjacent bellows are connected together.

[0042] The high-density polyethylene corrugated pipe solves the problem of slow installation speed in the prior art by arranging a fast-connectable clamping seat mechanism 6 and a clamping head 14 structure at both ends of the corrugated pipe body 1.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A high-density polyethylene corrugated pipe, comprising a corrugated pipe body (1), characterized in that: A steel frame (5) is arranged inside the corrugated pipe body (1), and the steel frame (5) comprises a plurality of corrugated ribs (51) circumferentially arranged inside the corrugated pipe body (1), and a plurality of reinforcing rings (52) arranged parallel to the corrugated pipe body (1), wherein the reinforcing rings (52) are used to connect together the wave crest points of the plurality of corrugated ribs (51) on the same horizontal plane; A base mechanism (6) and a clamping head mechanism (7) for connecting adjacent bellows are respectively provided at both ends of the bellows body (1); the base mechanism (6) comprises a base (8) arranged at the end of the bellows body (1); a clamping hole (11) is provided on the end surface of the base (8) facing away from the bellows body (1); a sealing groove (12) is provided on the hole wall of the clamping hole (11); the clamping head mechanism (7) comprises a clamping head (14) arranged at one end of the bellows body (1) away from the base (8) and used for inserting into the clamping hole (11); an annular groove (17) aligned with the sealing groove (12) is provided on the outer side wall of the clamping head (14); a sealing ring (21) is embedded in the annular groove (17); and a pushing ring mechanism for pushing the sealing ring (21) to open outward and partially embed it in the sealing groove (12) is provided in the clamping head (14); The end surface of the clamp (14) facing away from the bellows body (1) is provided with a plurality of movable grooves (18) connected with the annular groove (17); the push ring mechanism comprises a push plate (22) slidably arranged in the annular groove (17) and located inside the sealing ring (21); and a cam (26) rotatably arranged in the movable groove (18) and used for pushing the push plate (22) to move away from the center of the clamp (14); A plurality of spring grooves (23) are provided on the bottom wall of the annular groove (17) corresponding to each push plate (22); a spring groove (24) aligned with the spring groove (23) is provided on the end surface of the push plate (22) facing the spring groove (23); and a tension spring (25) for pulling the push plate (22) to return to its original position is provided between the bottom wall of the spring groove (23) and the bottom wall of the spring groove (24); A pressure ring (27) is arranged on the end surface of the clamp (14) facing away from the corrugated tube; A rotating hole (19) is provided on the bottom wall of each movable groove (18); a gear groove (20) connected to the plurality of rotating holes (19) is provided on the outer wall of the clamping head (14); each cam (26) is coaxially provided with a rotating shaft (28) passing through the rotating hole (19) and rotatably matched with the rotating hole (19); each rotating shaft (28) is coaxially provided with a driving gear (29) rotatably arranged in the gear groove (20) at one end away from the cam (26); a ring-shaped gear ring flange (30) is provided on the outer side of the plurality of driving gears (29) and is used to drive the plurality of driving gears (29) to rotate simultaneously; an inner wall of the gear ring flange (30) is provided with internal teeth (31) meshing with the plurality of driving gears (29); a portion of the gear ring flange (30) close to the center is embedded in the gear groove (20); A holder flange (13) flange-connected to the gear ring flange (30) is provided on the outer side wall of the holder (8).

2. A high-density polyethylene corrugated pipe according to claim 1, characterized in that: The bellows body (1) comprises a bellows section (2), a clamp connection section (4) provided at one end of the bellows section (2) close to a clamp (14) and having an external thread, a clamp threaded hole (15) threadedly matched with the clamp connection section (4) is provided on the end surface of the clamp (14) facing the bellows body (1), and a clamp sealing gasket (16) is provided between the end surface of the clamp connection section (4) facing away from the bellows section (2) and the clamp (14).

3. A high-density polyethylene corrugated pipe according to claim 2, characterized in that: A socket connection section (3) having an external thread is arranged at one end of the corrugated section (2) close to the socket (8); a socket threaded hole (9) threadedly matched with the socket connection section (3) is provided on the end surface of the socket (8) facing the corrugated tube body (1); and a socket sealing gasket (10) is arranged between the end surface of the socket connection section (3) facing away from the corrugated section (2) and the socket (8).

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