Hollow double spirally-wound plastic hose and production process thereof

A technology for plastic hoses and production processes, applied in the field of hoses, can solve problems such as cracking

Pending Publication Date: 2019-07-12
上海英煌管业科技有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the spirally wound corrugated pipe is buried in the ground, it will be repeatedly stretched by the wheels of the car for a long time. Therefore, when the pipe is under pressure as a whole, the above two parts of the spirally wound corrugated pipe will be subject to uneven pressure, which will easily cause cracking. Phenomenon

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hollow double spirally-wound plastic hose and production process thereof
  • Hollow double spirally-wound plastic hose and production process thereof
  • Hollow double spirally-wound plastic hose and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The invention provides a hollow double-helix wound plastic hose, which is composed of a base strip 1 and a reinforcement strip 2 . Seen from the cross-section, the basic strip 1 is composed of three parts, the middle part is a hollow trapezoidal winding unit 11, the front and rear flanks are connecting edges, and the rear flank 13 is provided with a stepped bonding section, The front side wing 12 is an adhesive section with an inverted step, and is adhesively fitted with the rear adhesive section. The reinforcing strip 2 is an upside-down embedded hollow regular trapezoid a or hollow hexagon b.

[0037] The production process of the hollow double-helix wound plastic hose of the present invention, the specific process steps are as follows:

[0038] First, the base tape 1 is extruded from the first extruder 31, and the base tape 1 is wound. At the same time, the second extruder 32 is used to extrude the reinforced strip 2; wherein, the process of the first extruder 31 i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a hollow double spirally-wound hose. The hose is composed of a base strip and a reinforcing strip, and the base strip and the reinforcing strip are spirally wound and are formed by welding through melt glue; the base strip is in a hollow regular trapezoid shape, two side wings of the base strip are provided with side wing bodies which extend towards outside and can be matched with each other, and the two side wings can be adhered to the side wing bodies when being wound; when the base strip is wound, the front side wing body and the rear side wing body are welded through the melt glue to form a pipe body, the pipe body is provided with ripples with protrusions and grooves, and then the reinforcing strip is wound in the grooves; and the base strip is extruded by a first extruder and is wound into a foundation pipe body, meanwhile, a second extruder extrudes the reinforcing strip, and the reinforcing strip winds around the foundation pipe body. The hollow doublespirally-wound plastic hose has the advantages that the surface of a joint of the most fragile winding unit is covered with the reinforcing strip, so that larger pressure can be borne; and in addition, the reinforcing strip can prevent weakness and pipe breakage caused by uneven expansion caused by different bearing pressure and temperature changing.

Description

technical field [0001] The invention relates to a hose made of rubber or soft plastic, in particular to a hollow double-helix winding hose and its production process. Background technique [0002] In the current technology, spirally wound plastic hoses are widely used in drainage and sewage projects, and the spirally wound plastic hoses are usually made of special-shaped strips. The cross-section of the special-shaped strip has various shapes, such as: a square strip, a strip with hollow protruding reinforcing ribs on both sides, and so on. Its design purpose is to improve the ring stiffness of the pipe wall when the whole is under compression. The above design is simple and effective in production. Therefore, spiral wound plastic hoses are widely used in: (1) underground drainage and sewage systems for municipal engineering and residential quarters; (2) pre-buried pipelines for highways; (3) water delivery and drainage systems for farmland water conservancy irrigation ; ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16L11/24F16L11/115B29D23/00
CPCF16L11/24F16L11/115B29D23/001
Inventor 余志华
Owner 上海英煌管业科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap