CN216279853U

CN216279853U - Composite multilayer corrugated pipe

Info

Publication number: CN216279853U
Application number: CN202120685484.3U
Authority: CN
Inventors: 张文华
Original assignee: Jiangxi Liansu Technology Industry Co ltd
Current assignee: Jiangxi Liansu Technology Industry Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-04-12
Anticipated expiration: 2031-04-02

Abstract

The utility model relates to the technical field of corrugated pipe production, in particular to a composite multilayer corrugated pipe. The corrugated pipe comprises a double-wall corrugated pipe main body, wherein two ends of the double-wall corrugated pipe main body are respectively provided with a socket and a socket, and the double-wall corrugated pipe main body comprises an inner flat wall and a corrugated wall surrounding the periphery of the inner flat wall. The outer wall protection reinforced layers cover the section of the bellmouth and are straight protection walls, and the section of the outer wall protection reinforced layers cover the section of the double-wall corrugated pipe main body is a corrugated protection wall. The outer wall protection reinforced layer of at least one layer is arranged on the periphery of the corrugated wall of the corrugated pipe, so that the problem that the outer wall wave crest of the pipe is broken when the pipe is dragged or impacted during carrying and construction is avoided, and the outer wall protection reinforced layer of the pipe body mainly plays a role in buffering and shock absorption similar to an air cushion.

Description

Composite multilayer corrugated pipe

Technical Field

The utility model relates to the technical field of corrugated pipe production, in particular to a composite multilayer corrugated pipe.

Background

The double-wall corrugated pipe is a pipe with an outer wall with an annular corrugated structure and a smooth inner wall, and the high-density polyethylene has excellent chemical stability, aging resistance and environmental stress cracking resistance. The double-wall corrugated pipe has the advantages of light weight, less material consumption, high strength, high production efficiency, socket joint type joint with integrated molding and the like, is a plastic pipe with the highest recognized cost performance in the current market, and still has certain hidden danger: 1) the strength of the pipe bell mouth is generally lower, and the product is seriously deformed under pressure during storage and transportation, so that the connection effect of the sealing ring is influenced or the sealing ring cannot be installed; 2) the outer wall wave crests of the pipe are dragged or easily broken by impact during transportation and construction, so that the engineering quality is influenced; 3) the wave crest of the outer wall of the pipe is higher, the soil backfilling effect is not tightly influenced, and the bearing stress is not uniform.

Chinese patent publication No. CN203099133U discloses a double-wall composite corrugated pipe in 2013, 07/31, in which a smooth micro-corrugated structure is welded to the surface of the inner layer corrugation to form a stable triangle with the inner layer, so as to improve the compressive strength of the pipe. However, although this structure has a certain improvement in compressive strength, it is not resistant to abrasion and impact during use, and the outer layer of the micro-corrugated structure layer is easily damaged, thereby affecting the strength of the pipe body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a composite multilayer corrugated pipe and a production unit thereof.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the composite multilayer corrugated pipe comprises a double-wall corrugated pipe main body, wherein two ends of the double-wall corrugated pipe main body are respectively provided with a socket and a socket, and the double-wall corrugated pipe main body comprises an inner flat wall and a corrugated wall surrounding the periphery of the inner flat wall. The outer wall protection reinforced layers cover the section of the bellmouth and are straight protection walls, and the section of the outer wall protection reinforced layers cover the section of the double-wall corrugated pipe main body is a corrugated protection wall. Different corrugated pipes are connected with the socket in a matching way through the bellmouths. The outer wall protection enhancement layer of double-walled bellows main part has played the buffering of crashproof abrasionproof, similar air cushion and has inhaled the shake function, avoids corrugated pipe material to drag or receive the easy pipe outer wall crest broken hole that causes of impact when transport and construction.

Preferably, the corrugated protection wall has the same size as the peaks of the corrugated wall, and the valleys of the corrugated protection wall are shallower than the valleys of the corrugated wall. The wave trough of the corrugated protection wall is shallow, so that the construction soil backfilling is facilitated, and the integral stress is more uniform.

Preferably, the double-wall corrugated pipe body is made of HDPE. The high density polyethylene has excellent chemical stability, aging resistance and environmental stress cracking resistance.

In one preferable scheme, the number of the outer wall protection reinforcing layers is not more than three. Too many outer wall protection reinforcement layers tend to add weight to the corrugated tubing and therefore typically do not exceed three layers.

Preferably, the socket is sleeved with at least one sealing rubber ring. When the socket is matched with the bellmouth, the outer peripheral wall of the sealing rubber ring is in interference fit with the inner peripheral wall of the bellmouth to realize sealing.

A composite multilayer corrugated pipe production unit is used for producing the composite multilayer corrugated pipe and specifically comprises a corrugated pipe extrusion forming machine, a pipe supporting frame, a tractor and an outer wall protective layer coating forming machine which are sequentially arranged; the corrugated pipe extrusion molding machine is used for extruding a double-wall corrugated pipe main body; the stinger is used for temporarily bearing the extruded double-wall corrugated pipe main body; the tractor is used for driving the double-wall corrugated pipe main body to enter the outer wall protective layer coating forming machine; the outer wall protective layer coating forming machine is used for extruding the outer wall protective reinforcing layer to enable the outer wall protective reinforcing layer to be fused and adhered to the outer peripheries of the double-wall corrugated pipe main body and the bell mouth.

The corrugated pipe is produced by the corrugated pipe extrusion forming machine, cut off after mould pressing plasticizing forming, temporarily placed on the stinger, and then pushed to the outer wall protective layer coating forming machine by the tractor to be coated to form the outer wall protective reinforced layer.

Further, a hot air heating area for increasing the surface temperature of the double-wall corrugated pipe main body is arranged between the stinger and the outer wall protection layer coating forming machine. Before the hot air heating area coats the cooled corrugated pipe, the temperature is raised and the corrugated pipe is preheated, so that the outer wall protection reinforcing layer is better attached to the main body.

Further, the hot air heating area comprises a hot air annular cover and a hot air gun, and the hot air annular cover and the hot air gun preheat the surface of the double-wall corrugated pipe main body. The hot air annular cover and the hot air gun are common heating devices in the prior art, and therefore are not described in detail here.

Further, the control range of the hot air heating area on the surface temperature of the double-wall corrugated pipe main body is 60-70 ℃. Tests show that the coating effect is best when the surface temperature of the pipe is controlled to be 60-70 ℃.

Further, the position of the tractor is adjustable. The position of the tractor is not fixed, and the tractor can be flexibly arranged at other positions of the unit as long as the function of pushing and dragging is met.

Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a composite multilayer corrugated pipe and a production unit thereof, wherein the periphery of the composite multilayer corrugated pipe is provided with at least one outer wall protection reinforcing layer, so that the composite multilayer corrugated pipe has the functions of collision prevention, abrasion prevention, buffering and shock absorption similar to an air cushion, and avoids the easy-caused wave crest hole of the outer wall of the pipe caused by dragging or impacting of a corrugated pipe during transportation and construction. The production unit specifically coats the outer wall protection reinforcing layer on the composite multilayer corrugated pipe, and the best processing effect is achieved.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention.

Fig. 2 is a schematic connection diagram of embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 4 is a schematic connection diagram of embodiment 2 of the present invention.

Fig. 5 is an overall schematic view of embodiment 3 of the present invention.

The corrugated pipe comprises a double-wall corrugated pipe main body 1, a bell mouth 2, a spigot 3, an inner flat wall 11, a corrugated wall 12, an outer wall protection reinforcing layer 4, a straight protection wall 41, a corrugated protection wall 42, a sealing rubber ring 5, a corrugated pipe extrusion forming machine 100, a stinger 200, a tractor 300, an outer wall protection layer coating forming machine 400 and a hot air heating area 500.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example 1

As shown in fig. 1, the present embodiment provides a composite multilayer corrugated pipe, which includes a double-wall corrugated pipe body 1 made of HDPE, where the double-wall corrugated pipe body 1 includes an inner flat wall 11 and a corrugated wall 12 surrounding the outer periphery of the inner flat wall 11. Two ends of the double-wall corrugated pipe main body 1 are respectively provided with a socket 2 and a socket 3, and different corrugated pipes are connected with the socket 3 through the socket 2 in a matching way.

Wherein, the outer periphery of the double-wall corrugated pipe main body 1 and the bellmouth 2 is covered with an outer wall protection reinforced layer 4, one section of the outer wall protection reinforced layer 4 covered on the bellmouth 2 is a straight protection wall 41, one section of the outer wall protection reinforced layer 4 covered on the double-wall corrugated pipe main body 1 is a corrugated protection wall 42, as shown in fig. 1, the outer wall protection reinforced layer 4 has the functions of collision prevention, abrasion prevention, cushion and shock absorption similar to an air cushion, and the outer wall wave crest hole of the pipe, which is easily caused by dragging or being hit when the corrugated pipe is carried and constructed, is avoided.

Specifically, the corrugated protection wall 42 has the same size as the peaks of the corrugated wall 12, and the valleys of the corrugated protection wall 42 are shallower than the valleys of the corrugated wall 12. The wave trough of the corrugated protection wall 42 is shallow, so that the construction soil backfilling is facilitated, and the integral stress is more uniform.

In addition, the socket 3 is sleeved with a sealing rubber ring 5, and when the socket 3 of an adjacent corrugated pipe is matched with the socket 2, the outer peripheral wall of the sealing rubber ring 5 is in interference fit with the inner peripheral wall of the socket 2 to realize sealing, as shown in fig. 2.

Example 2

The present embodiment also provides a composite multilayer corrugated pipe, which has a similar structural principle to that of embodiment 1, except that the number of the outer wall protection reinforcing layers 4 in the present embodiment is three, so that the protection effect is better, as shown in fig. 3. While the spigot 3 of an adjacent bellows is similar in form to the socket 2, as shown in figure 4.

Example 3

As shown in fig. 5, this embodiment provides a composite multilayer corrugated pipe production unit, which is used for producing the composite multilayer corrugated pipe in embodiment 1, and the unit includes a corrugated pipe extrusion molding machine 100, a stinger 200, a tractor 300, and an outer wall protective layer coating molding machine 400, which are sequentially arranged, where the tractor 300 is adjustable in position, and mainly performs a function of pushing and pulling the corrugated pipe. Meanwhile, a hot air heating area 500 for increasing the surface temperature of the double-wall corrugated pipe main body 1 is provided between the stinger 200 and the outer wall protection layer coating forming machine 400.

The corrugated pipe extrusion molding machine 100 is used to extrude the double-walled corrugated pipe body 1, and after cutting, the corrugated pipe body is temporarily placed on the stinger 200, and the tractor 300 pulls the double-walled corrugated pipe body 1 to transport. The cooled corrugated pipe is preheated by the action of a hot air heating area 500 before being coated, so that the surface temperature of the pipe is between 60 and 70 ℃, and the outer wall protective layer is better attached to the main body. The tractor 300 pushes the corrugated pipe to the outer wall protection layer coating forming machine 400, the outer wall protection layer coating forming machine 400 extrudes the outer wall protection reinforcing layer 4 through the runner and the coating mold, the outer wall protection reinforcing layer 4 is fused and adhered to the peripheries of the double-wall corrugated pipe main body 1 and the bell mouth 2, and the outer wall protection layer coating forming machine 400 is formed by a forming module through vacuumizing, mold pressing and plasticizing.

Specifically, the hot air heating zone 500 includes a hot air annular cover and a hot air gun, and the hot air annular cover and the hot air gun preheat the surface of the double-wall corrugated pipe main body 1. Through a plurality of tests, the control range of the hot air heating area 500 to the surface temperature of the double-wall corrugated pipe main body 1 is determined to be 60-70 ℃, and the coating effect of the pipe surface temperature is best at 60-70 ℃.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A composite multilayer corrugated pipe comprises a double-wall corrugated pipe main body (1), wherein two ends of the double-wall corrugated pipe main body (1) are respectively provided with a socket (2) and a socket (3), the double-wall corrugated pipe main body (1) comprises an inner flat wall (11) and a corrugated wall (12) surrounding the periphery of the inner flat wall (11), and the composite multilayer corrugated pipe is characterized in that: the outer wall protection reinforced layer comprises a double-wall corrugated pipe main body (1) and a bellmouth (2), wherein the peripheries of the double-wall corrugated pipe main body (1) and the bellmouth (2) are covered with a plurality of outer wall protection reinforced layers (4), one section of each outer wall protection reinforced layer (4) covering the bellmouth (2) is a straight protection wall (41), and one section of each outer wall protection reinforced layer (4) covering the double-wall corrugated pipe main body (1) is a corrugated protection wall (42).

2. The composite multilayer corrugated pipe of claim 1, wherein: the wave crest size of the corrugated protection wall (42) is the same as that of the corrugated wall (12), and the wave trough of the corrugated protection wall (42) is shallower than that of the wave trough of the corrugated wall (12).

3. The composite multilayer corrugated pipe of claim 2, wherein: the double-wall corrugated pipe main body (1) is made of HDPE materials.

4. The composite multilayer corrugated pipe of claim 3, wherein: the number of layers of the outer wall protection reinforcing layer (4) is not more than three.

5. The composite multilayer corrugated pipe of claim 4, wherein: the socket (3) is sleeved with at least one sealing rubber ring (5).