CN113236876A - Multilayer corrugated pipe and production unit thereof - Google Patents

Multilayer corrugated pipe and production unit thereof Download PDF

Info

Publication number
CN113236876A
CN113236876A CN202110363652.1A CN202110363652A CN113236876A CN 113236876 A CN113236876 A CN 113236876A CN 202110363652 A CN202110363652 A CN 202110363652A CN 113236876 A CN113236876 A CN 113236876A
Authority
CN
China
Prior art keywords
wall
corrugated pipe
double
main body
corrugated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110363652.1A
Other languages
Chinese (zh)
Inventor
张文华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Liansu Technology Industry Co ltd
Original Assignee
Jiangxi Liansu Technology Industry Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangxi Liansu Technology Industry Co ltd filed Critical Jiangxi Liansu Technology Industry Co ltd
Priority to CN202110363652.1A priority Critical patent/CN113236876A/en
Publication of CN113236876A publication Critical patent/CN113236876A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/025—General arrangement or layout of plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/20—Double-walled hoses, i.e. two concentric hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/01—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses adapted for hoses having a multi-layer wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear

Abstract

The invention relates to the technical field of corrugated pipe production, in particular to a multilayer corrugated pipe and a production unit thereof. 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

Multilayer corrugated pipe and production unit thereof
Technical Field
The invention relates to the technical field of corrugated pipe production, in particular to a multilayer corrugated pipe and a production unit thereof.
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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multilayer corrugated pipe and a production unit thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
a multi-layer 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 multilayer corrugated pipe production unit is used for producing the 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 to 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 invention has the beneficial effects that: the invention discloses a multilayer corrugated pipe and a production unit thereof, wherein the periphery of the multilayer corrugated pipe is provided with at least one outer wall protection reinforcing layer, so that the functions of collision prevention, abrasion prevention, buffering and shock absorption similar to an air cushion are achieved, and the wave crest breakage of the outer wall of the pipe caused by dragging or collision easily during the transportation and construction of a corrugated pipe is avoided. The production unit specifically coats the outer wall protection reinforcing layer on the 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 invention 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 multi-layer corrugated pipe, which includes a double-wall corrugated pipe body 1 made of HDPE, and 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 multi-layer corrugated pipe, which has a similar structure 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 multilayer corrugated pipe production unit, which is used for producing the 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 arranged in sequence, wherein 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 coating 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 best coating effect is achieved when the surface temperature of the pipe is 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 (10)

1. A multilayer corrugated pipe comprising a double-wall corrugated pipe main body (1), both ends of the double-wall corrugated pipe main body (1) being provided with a socket (2) and a spigot (3), respectively, the double-wall corrugated pipe main body (1) comprising an inner flat wall (11) and a corrugated wall (12) surrounding the outer periphery of the inner flat wall (11), 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 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 multilayer corrugated pipe of claim 2, wherein: the double-wall corrugated pipe main body (1) is made of HDPE materials.
4. The 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 multilayer bellows production unit of claim 4, characterized in that: the socket (3) is sleeved with at least one sealing rubber ring (5).
6. A multilayer corrugated pipe production unit for producing the multilayer corrugated pipe of claim 1, characterized in that: comprises a corrugated pipe extrusion forming machine (100), a stinger (200), a tractor (300) and an outer wall protective layer coating forming machine (400) which are arranged in sequence;
the corrugated pipe extrusion molding machine (100) is used for extruding a double-wall corrugated pipe main body (1);
the stinger (200) is used for temporarily bearing the extruded double-wall corrugated pipe main body (1);
the tractor (300) is used for dragging the double-wall corrugated pipe main body (1) to enter the outer wall protective layer coating forming machine (400);
the outer wall protective layer coating forming machine (400) is used for extruding the outer wall protective reinforcing layer (4) to enable the outer wall protective reinforcing layer to be fused and adhered to the peripheries of the double-wall corrugated pipe main body (1) and the socket (2).
7. The multilayer bellows production unit of claim 6, characterized in that: and a hot air heating area (500) for increasing the surface temperature of the double-wall corrugated pipe main body (1) is arranged between the stinger (200) and the outer wall protective layer coating forming machine (400).
8. The multilayer bellows production unit of claim 7, wherein: the hot air heating area (500) comprises a hot air annular cover and a hot air gun, and the surface of the double-wall corrugated pipe main body (1) is preheated by the hot air annular cover and the hot air gun.
9. The multilayer bellows production unit of claim 8, wherein: the control range of the hot air heating area (500) to the surface temperature of the double-wall corrugated pipe main body (1) is 60-70 ℃.
10. The multilayer bellows production unit of claim 9, wherein: the position of the tractor (300) is adjustable.
CN202110363652.1A 2021-04-02 2021-04-02 Multilayer corrugated pipe and production unit thereof Pending CN113236876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110363652.1A CN113236876A (en) 2021-04-02 2021-04-02 Multilayer corrugated pipe and production unit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110363652.1A CN113236876A (en) 2021-04-02 2021-04-02 Multilayer corrugated pipe and production unit thereof

Publications (1)

Publication Number Publication Date
CN113236876A true CN113236876A (en) 2021-08-10

Family

ID=77131031

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110363652.1A Pending CN113236876A (en) 2021-04-02 2021-04-02 Multilayer corrugated pipe and production unit thereof

Country Status (1)

Country Link
CN (1) CN113236876A (en)

Similar Documents

Publication Publication Date Title
CA2445586C (en) Improved composite tubing
US7322379B2 (en) Flexible kink-resistant hoses
US20080210327A1 (en) Corrugated pipe with outer layer
CN102384318A (en) Wall tube with reinforced polyethylene-wound structure as well as manufacturing device and manufacturing method thereof
WO2016132915A1 (en) Reticulate molded resin article, and method of manufacturing reticulate molded resin article
CN103807518A (en) Novel high-strength HDPE (high-density polyethylene) corrugated pipe and production method thereof
CN202302370U (en) Pipe with walls wound with reinforced polyethylene and production device thereof
CN216279853U (en) Composite multilayer corrugated pipe
CN105587942B (en) A kind of continuous lod pressure pipe and its moulding process
CN113236876A (en) Multilayer corrugated pipe and production unit thereof
CN106481901A (en) A kind of enhancing carat pipe and its manufacture method
CN212528600U (en) Continuous fiber reinforced composite pipe winding equipment
CN205978862U (en) High density polyethylene double -walled bellows with new wave form
CN205453000U (en) Modified polypropylene M -PP adds muscle double -walled bellows
CN202158286U (en) Steel band reinforced plastic water drainage pipeline and device thereof
EP1637787B1 (en) Corrugated tube with outer protection layer
CN210240810U (en) High-wear-resistance composite reinforced polyethylene structure wall winding pipe
CN112984233A (en) High-rigidity polyethylene composite pipe and preparation method thereof
CN210484855U (en) Flexible composite pipe
CN114583650A (en) Enhanced heat-resistant composite power tube and preparation method thereof
EP3359857B1 (en) Spiral-welded polymer products with a cellular wall and thermoplastic profile for its production
CN113007457A (en) High-density polyethylene/cross-linked foaming reinforced polyethylene composite double-wall winding pipe
KR100459911B1 (en) Fabricating method for flexible double pipe of high strength and controllable weight
CN112856057B (en) Continuous fiber glass fiber board stirrup pipe composite arc top triangular corrugated pipeline
CN213236397U (en) Continuous fiber reinforced polyethylene spiral corrugated pipe

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination