PE double-wall flexible corrugated pipe

Abstract

The utility model provides a PE double-wall flexible corrugated pipe which comprises a pipe body, and a plurality of sets of flexible nesting pieces are arranged on the outer wall of the side, close to a pipe opening, of the pipe body. The flexible embedding piece comprises an outer connecting layer and an inner clamping ring, the inner clamping ring is connected to a corrugated groove in the outer wall of the pipe body in a clamped mode in a bolt fixing mode, the outer connecting layer comprises an inner supporting ring and an outer soft rubber layer arranged on the outer wall of the inner supporting ring, and the inner supporting ring is fixedly connected to the inner clamping ring; in the pipeline butt joint process, the outer soft rubber layer in the flexible nested part is preheated and then inserted into other pipelines, and the flexible nested part is tightly connected with the inner walls of the other pipelines through the outer soft rubber layer. The flexible nesting piece provided by the utility model has the main function of helping to improve the sealing performance of different pipelines in the pipeline connecting process, a plurality of groups of flexible nesting pieces are assembled on a pipe body in real time, and then the flexible nesting piece is butted with other pipelines by utilizing the characteristics of a hot melting structure, so that the sealing degree in the butting process is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PE double-wall corrugated pipes, and particularly relates to a PE double-wall flexible corrugated pipe. Background Art

[0002] The PE double-wall corrugated pipe is a new type of lightweight pipe made of high-density polyethylene, which has the characteristics of light weight, high pressure resistance, good toughness, fast construction, long service life, etc. Due to its excellent pipe wall structure design, compared with pipes of other structures, the cost is greatly reduced; and because of convenient and reliable connection, it is widely used at home and abroad, and a large number of concrete pipes and cast iron pipes are replaced.

[0003] During the connection process of PE double-wall corrugated pipes, the insertion method is usually adopted to achieve nested connection. Although this method can achieve quick docking, the sealing performance of the connected pipes is insufficient and cannot meet the sealing requirements in some specific environments. Summary of the Utility Model

[0004] The utility model provides a PE double-wall flexible corrugated pipe, aiming to solve the problem that after the nested connection is realized by the insertion method of the existing PE double-wall corrugated pipe, the sealing performance of the pipe is insufficient and cannot meet the sealing requirements in some specific environments.

[0005] The utility model is realized as follows. A PE double-wall flexible corrugated pipe includes:

[0006] A pipe body, and several groups of flexible embedding kits are arranged on the outer wall of the pipe body near the pipe orifice.

[0007] The flexible embedding kit includes an outer connection layer and an inner clamping ring. The inner clamping ring is clamped and connected to the corrugated groove on the outer wall of the pipe body by a bolt fixing method. The outer connection layer includes an inner support ring and an outer soft rubber layer arranged on the outer wall of the inner support ring. The inner support ring is fixedly connected to the inner clamping ring.

[0008] During the pipe docking process, the outer soft rubber layer in the flexible embedding kit is preheated and then inserted into other pipes, and the flexible embedding kit is tightly connected to the inner wall of other pipes through the outer soft rubber layer.

[0009] Preferably, the outer soft rubber layer is attached to the outer wall of the inner support ring. Several groups of inner screw holes are arranged on the inner support ring, and several groups of outer through holes corresponding to the positions of the inner screw holes are arranged on the outer soft rubber layer.

[0010] Preferably, a connection head and a connection bolt are arranged at the connection part of the inner clamping ring, and the connection head is fixedly connected through the connection bolt.

[0011] Preferably, the inner wall of the inner clamping ring is adapted to the corrugated groove of the pipe body.

[0012] Preferably, a plurality of groups of fixing screw holes are provided on the inner snap ring, the positions of the fixing screw holes match those of the internal screw holes, and the bolts provided on the inner support ring are assembled in the fixing screw holes and the internal screw holes after passing through the outer through holes.

[0013] Preferably, a hot melt film is provided on the end face of the connector away from the center of the inner snap ring.

[0014] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0015] 1. During the pipeline docking process of the PE double-wall flexible corrugated pipe provided by the present utility model, the main function of the flexible embedding kit is to help improve the sealing performance between different pipelines during the pipeline connection process. A plurality of groups of flexible embedding kits are assembled onto the pipe body in real time. First, the outer soft glue layer made of hot melt glue is preheated, and after the outer soft glue layer is preheated, it is inserted into other pipelines. The flexible embedding kit is tightly connected to the inner wall of other pipelines through the outer soft glue layer.

[0016] 2. For the PE double-wall flexible corrugated pipe provided by the present utility model, the purpose of the split design of the inner snap ring and the outer connection layer is, on the one hand, to improve the flexibility of the product in matching use, and on the other hand, the inner snap ring adopts a clamping fixed structure. Through the fixed method of covering the inner support ring and the side of the inner snap ring, the area that cannot be covered by the outer soft glue layer is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0018] Figure 2 is a schematic structural diagram of a flexible embedding kit of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0019] Figure 3 is a schematic structural diagram of an outer connection layer of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0020] Figure 4 is a schematic structural diagram of the end face of a flexible embedding kit of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0021] Figure 5 is a schematic structural diagram of the connection structure between the outer connection layer and the inner snap ring of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0022] Figure 6 is a schematic structural diagram of a connector of a PE double-wall flexible corrugated pipe provided by the present utility model.

[0023] DESCRIPTION OF THE REFERENCE NUMERALS:

[0024] 100, pipe body; 200, flexible embedding kit; 210, outer connection layer; 211, inner support ring; 212, outer soft rubber layer; 213, outer through hole; 214, inner screw hole; 220, inner snap ring; 221, fixing screw hole; 222, connecting head; 223, connecting bolt; 224, hot melt film. Detailed implementation mode

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0026] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] An embodiment of the present utility model provides a PE double-wall flexible corrugated pipe, as Figure 1 shown, the PE double-wall flexible corrugated pipe includes:

[0028] A pipe body 100, and several groups of flexible embedding kits 200 are provided on the outer wall of the pipe body 100 near the pipe orifice;

[0029] The flexible embedding kit 200 includes an outer connection layer 210 and an inner snap ring 220. The inner snap ring 220 is snap-fitted to the corrugated groove on the outer wall of the pipe body 100 by a bolt fixing method. The outer connection layer 210 includes an inner support ring 211 and an outer soft rubber layer 212 provided on the outer wall of the inner support ring 211. The inner support ring 211 is fixedly connected to the inner snap ring 220;

[0030] In this application, first, an inner snap ring 220 similar to a clamp structure is assembled in the corrugated groove of the pipe body 100, and the inner snap ring 220 is connected to the pipe body 100 by using the fixing effect of the clamp. Subsequently, the outer connection layer 210 is assembled on the inner snap ring 220. It should be noted that the outer connection layer 210 is not an integral structure. There is a notch on the outer connection layer 210. During assembly, the outer connection layer 210 is stretched to nest the outer connection layer 210 outside the inner snap ring 220. Here, the outer connection layer 210 can cover most parts of the inner snap ring 220.

[0031] During the pipeline docking process, the outer soft glue layer 212 made of hot melt adhesive is first preheated. After the outer soft glue layer 212 is preheated, it is inserted into other pipelines. The flexible insert 200 is tightly connected to the inner wall of other pipelines through the outer soft glue layer 212.

[0032] The main function of the flexible insert is to help improve the sealing performance of different pipelines during the pipeline connection process. According to the sealing requirements, several groups of flexible inserts 200 are assembled onto the pipe body 100 in real time. The clamp structure adopted by the inner snap ring 220 can be assembled at the construction site or before leaving the factory, while the outer connection layer 210 is docked by means of bolt fixation. It should be noted here that the outer diameters of the outer connection layers 210 assembled in different regions of the pipe body 100 are different. Generally speaking, to increase the resistance, the outer diameter of the outer connection layer 210 far from the pipe orifice needs to be larger than that of the outer connection layer 210 close to the pipe orifice. No matter what size the outer connection layer 210 is adopted, the structure of the inner snap ring 220 is the same; the purpose of adopting the inner snap ring 220 is on the one hand to improve the flexibility of the matching use of products, and on the other hand, the inner snap ring 220 adopts a clamp fixing structure, and through the fixing method of covering the inner support ring 211 and the side of the inner snap ring 220, the area that cannot be covered by the outer soft glue layer 212 is reduced;

[0033] In this application, the outer soft glue layer 212 is attached to the outer wall of the inner support ring 211. The inner support ring 211 is completely fitted with the outer wall of the inner snap ring 220. There are several groups of inner screw holes 214 on the inner support ring 211, and there are several groups of outer through holes 213 on the outer soft glue layer 212 corresponding to the positions of the inner screw holes 214. During the assembly process, bolts are directly passed through the outer through holes 213 and then assembled on the inner screw holes 214 and the inner snap ring 220.

[0034] As a preferred implementation manner in this embodiment, a connection head 222 and a connection bolt 223 are provided at the connection of the inner snap ring 220, and the connection head 222 is fixedly connected through the connection bolt 223;

[0035] A number of groups of fixing screw holes 221 are provided on the inner snap ring 220. The fixing screw holes 221 are matched with the positions of the internal screw holes 214. Bolts provided on the inner support ring 211 are assembled in the fixing screw holes 221 and the internal screw holes 214 after passing through the outer through holes 213.

[0036] As a preferred implementation manner in this embodiment, a hot melt film 224 is provided on the end face of the connection head 222 away from the center of the inner snap ring 220.

[0037] In this embodiment, the hot melt film 224 is made of the same material as the outer soft rubber layer 212. Here, due to the need for assembly connection, the connection head 222 cannot be covered by the outer soft rubber layer 212. Therefore, a hot melt film 224 is provided on the circumferential side of the connection head 222 to fill the gap, ensuring that the circumferential side of the flexible insert kit 200 has hot melt adhesive material. After heating, the hot melt adhesive will deform and fit more closely to the inner wall of other pipes. By adding the hot melt film 224, the sealing dead angle is reduced.

[0038] In a further preferred embodiment of the present utility model, the inner wall of the inner snap ring 220 is adapted to the corrugated groove of the pipe body 100. The inner wall of the inner snap ring 220 is customized according to the corrugated groove of the pipe body 100. A sealing rubber ring is also provided on the inner wall of the inner snap ring 220, and it is tightly combined with the pipe body 100 during the fastening process of the inner snap ring 220.

[0039] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0040] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions or other adjustments to the features in the embodiments of the present utility model according to the situation without creative efforts, so as to obtain different technical solutions that are essentially not divorced from the concept of the present utility model, and these technical solutions also fall within the scope of protection of the present utility model.

Claims

1. A PE double-walled flexible corrugated pipe, characterized in that: include: A tube body, wherein the outer wall of the tube body adjacent to the tube opening is provided with a plurality of groups of flexible nesting members; The flexible nesting member comprises an outer connecting layer and an inner clamping ring, wherein the inner clamping ring is clamped and connected to the corrugated groove on the outer wall of the tube body by bolt fixing, and the outer connecting layer comprises an inner supporting ring and an outer soft rubber layer arranged on the outer wall of the inner supporting ring, and the inner supporting ring is fixedly connected to the inner clamping ring; During the process of pipe docking, the outer soft rubber layer of the flexible nested piece is preheated and then inserted into other pipes, and the flexible nested piece is tightly connected to the inner wall of the other pipe through the outer soft rubber layer.

2. A PE double-walled flexible corrugated pipe as claimed in claim 1, characterized in that: The outer soft rubber layer is attached to the outer wall of the inner support ring. The inner support ring is provided with a plurality of groups of inner screw holes. The outer soft rubber layer is provided with a plurality of groups of outer through holes corresponding to the positions of the inner screw holes.

3. A PE double-walled flexible corrugated pipe as claimed in claim 2, characterized in that: A connecting head and a connecting bolt are provided at the connection of the inner clamping ring, and the connecting head is fixedly connected by the connecting bolt.

4. A PE double-walled flexible corrugated pipe as claimed in claim 3, characterized in that: The inner wall of the inner clamping ring is matched with the corrugated groove of the tube body.

5. A PE double-walled flexible corrugated pipe as claimed in claim 4, characterized in that: The inner clamping ring is provided with a plurality of sets of fixing screw holes, the positions of the fixing screw holes match the positions of the inner screw holes, and the bolts provided on the inner support ring are assembled in the fixing screw holes and the inner screw holes after passing through the outer through holes.

6. A PE double-walled flexible corrugated pipe as claimed in claim 5, characterized in that: The end surface of the connector away from the center of the inner clamping ring is provided with a hot-melt adhesive sheet.

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