CN217874603U

CN217874603U - PVC-M (polyvinyl chloride-M) composite core layer flat-wall pipe

Info

Publication number: CN217874603U
Application number: CN202221342401.1U
Authority: CN
Inventors: 温华启
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-11-22
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses a PVC-M closes flat-wall pipe of sandwich layer, include the pipe main part that forms by slab band spiral winding, the slab band is including the inner wall main part that constitutes the pipe main part, set up at the outside outer wall main part of inner wall main part, be used for connecting the splice bar of inner wall main part and outer wall main part, the one end of inner wall main part is equipped with the interior overlap joint wall of extension, be equipped with first male thread and the first box towards the pipe main part outside on the interior overlap joint wall, the one end of outer wall main part is equipped with the outer overlap joint wall of extension, be equipped with on the outer overlap joint wall towards the inboard second male thread and the second box of pipe main part, the inner wall main part be equipped with the anticorrosion color layer on the surface, the outer wall main part be equipped with the enhancement layer on the surface. The utility model discloses be equipped with the anticorrosion color coat on the surface of inner wall main part, can effectively strengthen the corrosion resisting property of pipe main part, smooth anticorrosion color coat surface can reduce surface fluid and hinder coefficient of friction simultaneously, the reinforcing velocity of flow.

Description

PVC-M (polyvinyl chloride-M) composite core layer flat-wall pipe

Technical Field

The utility model relates to a plastics flat-wall pipe, concretely relates to PVC-M closes flat-wall pipe of sandwich layer.

Background

The PVC-M is a modified polyvinyl chloride pipe, the toughness of the modified polyvinyl chloride pipe is 5 to 10 times higher than that of UPVC without reducing the long-term strength, the notch impact strength is more than or equal to 30Mpa (20 ℃) and more than 3 times of that of UPVC, so that more and more manufacturers adopt PVC-M materials as raw materials of municipal engineering drainage pipes.

Among the flat wall pipe technique of current spiral winding, the flat wall pipe is formed by slab band spiral winding, detains interconnect through the calabash between two adjacent slab band edges, and concrete structure can refer to the chinese utility model patent that patent number is CN201621083582.5, nevertheless discovers in the in-service use process, and this spiral winding pipe exists the leakproofness not enough and the problem that corrosion resistance is low, leads to life to shorten, can't satisfy the requirement of a lot of engineering.

Disclosure of Invention

In order to overcome the defects of the prior art, the PVC-M composite core layer flat-wall pipe is good in sealing performance and high in corrosion resistance.

The utility model provides a technical scheme that its technical problem adopted is:

PVC-M closes flat-walled pipe of sandwich layer, including the pipe main part that is formed by slab band spiral winding, the slab band is including constituting the inner wall main part of pipe main part, setting at the outside outer wall main part of inner wall main part, the splice bar that is used for connecting inner wall main part and outer wall main part, the one end of inner wall main part is equipped with the interior overlap joint wall of extension, be equipped with first pin thread and the first box towards the pipe main part outside on the interior overlap joint wall, the one end of outer wall main part is equipped with the outer overlap joint wall of extension, be equipped with the second pin thread and the second box towards the pipe main part inboard on the outer overlap joint wall, the inner wall main part be equipped with the anticorrosive colored layer on the surface, the outer wall main part be equipped with the enhancement layer on the surface.

The utility model discloses in, the slab band spiral winding back, first pin thread and the first box of first round slab band are connected with the second box and the second pin thread of second circle slab band respectively, and the joint seam department of the interior overlap joint wall of first round slab band and the outer overlap joint wall of second circle slab band is equipped with the sealing layer.

The utility model discloses in, be equipped with many splice bars between inner wall main part and the outer wall main part, many splice bars separate into a plurality of cavitys between with inner wall main part and the outer wall main part.

The utility model discloses in, be equipped with at least one horizontal strengthening rib that is on a parallel with the inner wall main part in the cavity.

The utility model discloses in, the inner wall main part is the flat wall, and the inner wall main part that the cavity corresponds and enhancement layer are outside bellied arcwall face.

The utility model has the advantages that: the utility model discloses be equipped with the anticorrosion color coat on the surface of inner wall main part, can effectively strengthen the corrosion resisting property of pipe main part, smooth anticorrosion color coat surface can reduce surface fluid and hinder coefficient of friction simultaneously, the reinforcing velocity of flow. Furthermore, the surface of the outer wall main body is provided with a reinforcing layer, and the reinforcing layer can effectively reinforce the pressure resistance of the pipe main body and simultaneously ensure good ring stiffness. Furthermore, the sealing layer is arranged at the joint of each circle of plate belt, so that the sealing performance of the pipe main body can be ensured, and the service life of the pipe main body is effectively ensured.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a cross-sectional view of a strip according to the first embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a cross-sectional view of a strip according to a second embodiment.

Detailed Description

Referring to fig. 1 to 3, the PVC-M composite core flat-wall pipe provided in this embodiment includes a pipe main body formed by spirally winding a plate strip, where the plate strip is made of a PVC-M material, and has the advantages of strong toughness, high impact resistance, and the like. The strip is integrally extruded and formed by a plastic extruder to form the strip. The plate strip comprises an inner wall main body 1 forming a pipe main body, an outer wall main body 2 arranged outside the inner wall main body 1 and a connecting rib 3 used for connecting the inner wall main body 1 and the outer wall main body 2, wherein the connecting rib 3 is vertical to the surface of the inner wall main body 1. The one end of inner wall main part 1 is equipped with the interior overlap joint wall 4 of extension, be equipped with on interior overlap joint wall 4 towards the first pin thread 5 and the first box 6 in the pipe main part outside, the one end of outer wall main part 2 is equipped with the outer overlap joint wall 7 of extension, be equipped with on the outer overlap joint wall 7 towards the inboard second pin thread 8 and the second box 9 of pipe main part, first pin thread 5 and the protruding half of highly being located the thickness between inner wall main part 1 and the outer wall main part 2 of second pin thread 8 make its connection atress more balanced. The surface of the inner wall main body 1 is provided with an anti-corrosion color layer 10, and the surface of the anti-corrosion color layer 10 is a smooth surface so as to reduce the fluid friction coefficient. The anti-corrosion color layer 10 is a color surface, and can clearly and respectively cover the surface or not after being processed, so that the yield is improved. Meanwhile, the surface of the outer wall main body 2 is provided with the enhancement layer 11, the enhancement layer 11 can be made of PVC-M material or PVC-U material and the like, so that the pressure resistance of the pipe main body is enhanced, and the pipe main body is ensured to have good ring stiffness.

In a preferred embodiment, after a strip is spirally wound, the first male buckle 5 and the first female buckle 6 of the first strip are respectively connected with the second female buckle 9 and the second male buckle 8 of the second strip, and so on until the pipe main body is formed. And on the outer pipe wall of the pipe main body, a sealing layer 12 is arranged at the joint of the inner lap joint wall 4 of the first ring of plate strip and the outer lap joint wall 7 of the second ring of plate strip, the sealing layer 12 is flat sealant, and the joint of the outer pipe of the pipe main body is spirally wound seriously with the sealant so as to shield the gap. For better sealing effect, after the strip is spirally wound to form the tube main body, a material is coated on the inner wall of the tube main body to form the anti-corrosion color layer 10, and simultaneously, the connecting seams of the inner tube wall are covered.

In this embodiment, be equipped with many splice bars 3 between inner wall main part 1 and the outer wall main part 2, many splice bars 3 separate into a plurality of cavities 13 with between inner wall main part 1 and the outer wall main part 2, the surface of inner wall main part 1 is the flat wall, and inner wall main part 1 and the enhancement layer 11 that cavity 13 corresponds are outside bellied arcwall face, and the both ends of arcwall face just in time are located splice bar 3 place, and the arcwall face can effectively strengthen the compressive strength of pipe main part outer wall.

Example two: referring to fig. 4, the principle and structure of this embodiment are substantially the same as those of the first embodiment, except that a transverse rib 14 is provided in the cavity 13 in parallel with the inner wall body 1, and the transverse rib 14 divides the cavity 13 into upper and lower parts to further enhance the compressive strength of the tube body. Here, the number of the transverse reinforcing ribs 14 is not limited to one, and may be a plurality of transverse reinforcing ribs, and the cavity 13 is divided into a plurality of parts, which has the same technical effect.

The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.

Claims

PVC-M closes flat-walled pipe of sandwich layer, include the pipe main part that forms by slab band spiral winding, the slab band is including inner wall main part (1) that constitutes the pipe main part, set up in outer wall main part (2) of inner wall main part (1) outside, be used for connecting splice bar (3) of inner wall main part (1) and outer wall main part (2), the one end of inner wall main part (1) is equipped with interior overlap joint wall (4) of extension, be equipped with on interior overlap joint wall (4) towards first pin thread (5) and first box (6) in the pipe main part outside, the one end of outer wall main part (2) is equipped with outer overlap joint wall (7) of extension, be equipped with on outer overlap joint wall (7) towards pipe main part inboard second pin thread (8) and second box (9), its characterized in that: the surface of the inner wall main body (1) is provided with an anti-corrosion colored layer (10), and the surface of the outer wall main body (2) is provided with a reinforcing layer (11).
2. The PVC-M composite core flat-walled tube of claim 1, wherein: after the plate strip is spirally wound, a first male buckle (5) and a first female buckle (6) of a first ring of plate strip are respectively connected with a second female buckle (9) and a second male buckle (8) of a second ring of plate strip, and a sealing layer (12) is arranged at a joint seam of an inner lap joint wall (4) of the first ring of plate strip and an outer lap joint wall (7) of the second ring of plate strip.
3. The PVC-M composite core flat-walled tube of claim 1, wherein: be equipped with many splice bars (3) between inner wall main part (1) and outer wall main part (2), many splice bars (3) separate into a plurality of cavitys (13) with between inner wall main part (1) and outer wall main part (2).
4. The PVC-M composite core flat-walled tube of claim 3, wherein: at least one transverse reinforcing rib (14) parallel to the inner wall main body (1) is arranged in the cavity (13).
5. The PVC-M composite core flat-walled tube of claim 3, wherein: the inner wall main body (1) is a flat wall, and the inner wall main body (1) and the reinforcing layer (11) corresponding to the cavity (13) are arc-shaped surfaces protruding outwards.